CN105465235B - A kind of brake - Google Patents

Abstract

The present invention discloses a kind of brake, including the first half upper half shells, the second half upper half shells, hydraulic cylinder, truncated cone-shaped roller, concavo-convex disk and lower half shell, the both sides external symmetry of concavo-convex disk is provided with three pairs of hydraulic cylinders, one end of each hydraulic cylinder towards concavo-convex disk is provided with truncated cone-shaped roller, the top of concavo-convex disk is located between the truncated cone-shaped roller of both sides, the card that concavo-convex disk both sides are located at outside its mounting hole is male and fomale(M＆F), and the male and fomale(M＆F) of both sides is symmetrical, male and fomale(M＆F) of the concavo-convex disk per side is respectively provided with two relative low levels and relative two high positions, the line of two low levels and the line of two high positions are vertical, low level seamlessly transits to a high-order and high position to low level, and inclination angle of the inclination angle everywhere per side male and fomale(M＆F) with the conical surface of the truncated cone-shaped roller of respective side is consistent.The present invention solves the problems, such as that existing brake performance reliability is poor, needs often more renewal of facing renewal and brake side-slipping, the advantages of having that braking ability is reliable, and braking effect is good, use cost is low and be easy to use.

Description

A kind of brake

Technical field

The present invention relates to a kind of brake.

Background technology

Brake is extremely important part on vehicle, and the quality of its performance is directly connected to traffic safety.At present

, the brake commonly used on vehicle is mainly drum brake and disk brake, wherein, drum brake

It is mainly used on big-and-middle-sized vehicle, and disk brake is mainly used on dilly.This two classes brake

It is that vehicle is braked using the bump contact dry friction of friction plate and brake drum or brake disc respectively

, because frictional heating amount is larger during braking, the contact surface of friction plate is often burnt or melted, and causes it

Braking ability is deteriorated（That is heat fading）, and thus bring braking distance length or the potential safety hazard of brake failure

, especially for oversize vehicles such as trucies, brake failure happens occasionally, and is brought greatly to traffic safety

Hidden danger.

Further, since existing brake is that frictionally effect is braked, friction plate and brake drum or system during braking

The abrasion of Moving plate is larger, therefore needs often more renewal of facing renewal and periodic replacement brake drum or brake disc, therefore

, the use cost of existing brake is higher, simultaneously as inevitable error, pacifies in actual use

The friction plate of brake on the wheel of both sides can not synchronously wear, and to prevent brake side-slipping, also need

Friction plate and the distance between brake drum or brake disc are often adjusted, therefore, the use of existing brake

Also it is very inconvenient.

The content of the invention

To solve the problems, such as that existing brake performance reliability is poor, needs often more renewal of facing renewal and brake side-slipping

, a kind of brake of present invention offer.

The technical solution adopted in the present invention is：

A kind of brake, including it is the first half upper half shells, the second half upper half shells, hydraulic cylinder, truncated cone-shaped roller, recessed

Convex disk and lower half shell, the first half upper half shell and the second half upper half shells or so are fastened and are fixedly connected, institute

State that the first half upper half shell inner circumferentials are alternate to be provided with three hydraulic cylinders, in the direction of each hydraulic cylinder the second half

The part of half-shell is telescopable portion, the telescopable portion can left and right it is flexible, set in the telescopable portion

It is equipped with truncated cone-shaped roller, the telescopic direction of the rotary centerline of truncated cone-shaped roller perpendicular to the telescopable portion

, and the profile of truncated cone-shaped roller towards the second half upper half shells protrudes from the telescopable portion, described the first half

It is provided with the oil inlet and oil-out communicated with the hydraulic cylinder on upper half shell, the first half upper half shell

Bottom is provided with the semicircle mounting hole for extending to its lower edge, and the periphery of the semicircle mounting hole is provided with

Flange, the first half front sides of upper half shell and the lower end of rear side are provided with horizontal connecting portion, described

The first half upper half shells are fixed on the flange of central siphon by its flange；

It is provided with hydraulic cylinder and truncated cone-shaped roller in the second half upper half shell, and set location and described the first half

The position of hydraulic cylinder and truncated cone-shaped roller in upper half shell is symmetrical, is set on the second half upper half shell

There is an oil inlet and oil-out communicated with the hydraulic cylinder, the bottom of the second half upper half shell, which is provided with, prolongs

The semicircle mounting hole of its lower edge is reached, surrounds physically being provided with being somebody's turn to do half for the semicircle mounting hole

The concentric and connected sealing ring mounting groove of circular mounting hole, the front side of the second half upper half shell and rear side

Lower end is provided with horizontal connecting portion, and the second half upper half shell passes through its sealing ring mounting groove and sealing

Circle is arranged on flanged pipe；

The concavo-convex disk is provided centrally with mounting hole, and concavo-convex disk is mounted and fixed on the method by the mounting hole

On blue pipe, the truncated cone-shaped rolling of the top of concavo-convex disk in the first half upper half shell and the second half upper half shells

Between wheel, card that concavo-convex disk both sides are located at outside the mounting hole is male and fomale(M＆F), and the male and fomale(M＆F) pair of both sides

Claim, male and fomale(M＆F) of the concavo-convex disk per side is respectively provided with two relative low levels and relative two high positions, and two is low

The line of position and the line of two high positions are vertical, and low level seamlessly transits to a high-order and high position to low level, and often

Inclination angle of the inclination angle everywhere of side male and fomale(M＆F) with the conical surface of the truncated cone-shaped roller of respective side is consistent；

The top on the left of the lower half shell and right side is respectively arranged with the semicircle mounting hole for extending to its top edge,

The periphery of semicircle mounting hole on the left of lower half shell is provided with flange, surrounds the semicircle peace on the right side of lower half shell

Dress hole is physically provided with sealing ring mounting groove that is concentric with the semicircle mounting hole and being connected, under described

Its flange that passes on left of half-shell is connected with the flange of the central siphon, and the right side of lower half shell is pacified by sealing ring

Tankage and the sealing ring are arranged on flanged pipe, front side, rear side, left side and the right side of lower half shell upper end

Be provided with horizontal flange connector, the flange connector respectively with the first half upper half shells and the second half upper half

The horizontal connecting portion connection of shell lower end, by the first half upper half shells, the second half upper half shell, lower half shell, axles

Pipe and the space that surrounds of flange sleeve are at least contained with lubricating oil in lower half shell, and the concavo-convex disk is at least under it

End is immersed in lubricating oil.

Preferably, in the first half upper half shell and the second half upper half shells it is alternate be provided with hydraulic cylinder installation cavity and

Spring chamber is hung, each hydraulic cylinder installation cavity is provided with the circumferential both sides of the first half upper half shells and hangs spring chamber,

The hydraulic cylinder is separately mounted in each hydraulic cylinder installation cavity, the telescopable portion of each hydraulic cylinder

Servo-actuated spring-hanging column is provided with the circumferential both sides of the first half upper half shells, is set in the side wall for hanging spring chamber

Have slide-and-guide groove corresponding with the servo-actuated spring-hanging column, hang be provided with the bottom plate of spring chamber with it is described servo-actuated

The hanging spring hook of spring-hanging column face hangs circlip, and the both ends of extension spring are hung in the servo-actuated spring-hanging column and hang spring

Hook is hung on circlip.

Preferably, the rotary centerline of one of truncated cone-shaped roller in the first half upper half shell and the first half

The vertical centerline of upper half shell is parallel, and another two truncated cone-shaped roller is located at the both sides of the truncated cone-shaped roller, and

The angle of the rotary centerline of the both sides truncated cone-shaped roller is more than 90 degree.

Preferably, the first half upper half shell and the second half overall profiles of upper half shell are in semi-circular shape, described

The first half upper half shells are fixed with the second half upper half shells by being connected to the bolt of the two edge, and the first half

Seam crossing outside upper half shell and the second half upper half shells is by sealant sealing；The installation of the concavo-convex disk center

Hole is splined hole, and the position that concavo-convex disk is installed on the flanged pipe is provided with external splines, and the concavo-convex disk leads to

The cooperation for crossing the external splines on its splined hole and flanged pipe is arranged on flanged pipe, and by fixture by bumps

Disk and flanged pipe are fixed；The flange connector of the lower half shell respectively with the first half upper half shells and the second half upper half

The horizontal connecting portion of shell lower end is bolted, and by the first half upper half shells, the second half upper half shells,

The space sealing that lower half shell, central siphon and flange sleeve surround.

Preferably, each hydraulic cylinder includes cylinder body and cock body, and the cock body is sealingly mounted at one end of cylinder body

, and cylinder body can move relative to cock body, the telescoping section is divided into cylinder body, and connection is provided with the cock body

The fuel feed hole and oil outlet at its both ends, one end of the fuel feed hole and oil outlet respectively with through its face

The fuel inlet fitting of the first half upper half shells or the second half upper half shells connects with back leakage connection, in the fuel feed hole extremely

Valve element and spring are installed less, the tapering point of the valve element is resisted against on fuel inlet fitting, the other end of the valve element

Be resisted against on spring, valve element and spring be at least installed in the oil outlet, the tapering point of the valve element against

On step in oil outlet, the other end of the valve element is resisted against on spring, and the other end of spring is resisted against

On back leakage connection.

Preferably, the brake also includes control system, and the control system includes terminal distribution valve, terminal

Fuel feed pump, terminal oil return pipe, divide fuel feed pump, divide oil return pipe, total allocation valve, total fuel feed pump, total oil return

Pipe, oil storage tank, brake chamber of dying, tracheae, scavenging air valve, park control valve, oil return control valve and brake

Car pedal gear, fuel supply chamber and oil back chamber are provided with the terminal distribution valve, is set on terminal distribution valve

There is what is connected with its fuel supply chamber and oil back chamber for a pair to divide oil-feed port and divide oil return opening and more than one pair of terminal to supply

Hydraulic fluid port and terminal oil return opening, six hydraulic cylinders for often covering brake pass through terminal fuel feed pump and terminal oil return pipe

It is connected with the terminal oil-feed port and terminal oil return opening of the terminal distribution valve, is set in the total allocation valve respectively

Fuel supply chamber and oil back chamber are equipped with, a pair are connected with total allocation valve and is connected respectively with its fuel supply chamber and oil back chamber

Total fuel feed pump and total oil return pipe and more than one pair of point of fuel feed pump and divide oil return pipe, it is described divide fuel feed pump and

Point oil return pipe respectively with dividing oil-feed port and divide oil return opening to be connected on terminal distribution valve, total fuel feed pump and

The oil-out connection of oil storage tank, the port connection of total oil return pipe and park control valve, park control valve

Another port be connected with a port of oil return control valve, another port of oil return control valve and storage

The oil return opening connection of oil tank, the aperture of at least one port of the oil return control valve and controlled, the institute of keying

State oil storage tank and be fixedly arranged above brake chamber of dying, force feed piston is provided with the oil storage tank, it is described disconnected

The push rod of gas brake chamber is connected with force feed piston, the scavenging air valve at least one air inlet, one go out

Gas port and an exhaust outlet, the air inlet connect with compressed gas source, and the gas outlet is by tracheae with breaking

The atmospheric pressure cavity connection of gas brake chamber, the scavenging air valve are only by park control valve and braking pedal mechanism respectively

Vertical control, and oil return control valve is controlled by braking pedal mechanism, it is described to change after park control valve is closed

The exhaust outlet of air valve connects with gas outlet, after park control valve is opened, the air inlet of the scavenging air valve with

Gas outlet connects, and after brake pedal is stepped on, the exhaust outlet of the scavenging air valve connects with gas outlet, described

The controlled port of oil return control valve is closed or aperture reduces, when having put brake pedal, the scavenging air valve

Air inlet connects with gas outlet, and the controlled port of the oil return control valve is opened or aperture increase.

Preferably, the longer terminal fuel feed pump of length, its caliber are corresponding thicker.

Preferably, the scavenging air valve is two position three-way valve.

Preferably, the brake chamber of dying includes cylinder block, spring, piston, push rod and cylinder head, described

Cylinder head is arranged on one end of cylinder block, and cylinder block is isolated into spring cavity and atmospheric pressure cavity by the piston, institute

State and ventilation mouth is provided with the wall of spring cavity, the spring is arranged in spring cavity, and the push rod is connected to

On piston, and push rod is stretched out outside cylinder block, and the push rod is stretched out in one end and oil storage tank outside cylinder block

Press oil piston connection.

Preferably, the scavenging air valve includes valve seat and valve element, and air inlet, gas outlet, row are provided with the valve seat

Gas port and valve element gathering hole, the valve element are in ladder circle cylindricality, and its big end, which has from end face, extends to valve element reality

Internal venthole, the venthole connect with the gas outlet, are provided with to go out with this in the side wall of the valve element

The air admission hole that stomata connects with the air inlet, and the steam vent connected with the venthole and the exhaust outlet

, the air admission hole and steam vent are elongate holes, and the small end of the valve element stretches out the valve element gathering hole,

And be connected with braking pedal mechanism, its rotation is controlled by braking pedal mechanism.

Preferably, the oil return control valve includes valve seat, valve rod, stage clip and pressure cap, and two are provided with the valve seat

Individual port and a valve rod gathering hole, one of port and valve rod gathering hole face, one end of valve rod is

Tapering point, open-ended stage clip mounting groove is axially provided with the other end, the tapering point of valve rod is through valve rod

Gathering hole sealing is stretched into valve seat, and is resisted against on the port of valve rod gathering hole face, the other end of valve rod

It is placed in outside valve seat, stage clip is installed in the stage clip mounting groove, the pressure cap is pressed in the upper end of stage clip, and

The outer surface of the stage clip installation end of its inner surface and valve rod is slidably matched, and brake pedal is arranged on cam,

And using the rotating shaft of cam as rotating shaft, the cam is pressed on pressure cap.

Beneficial effects of the present invention are：During braking, by being passed through hydraulic oil into the hydraulic jack of concavo-convex disk both sides

, and the oil return of hydraulic jack is controlled, so that the telescopable portion of the hydraulic jack of concavo-convex disk both sides is stretched out

, and drive the truncated cone-shaped roller that is arranged in telescopable portion to be tightly abutted against the both sides of concavo-convex disk, due to

The both sides of concavo-convex disk are symmetrically arranged with low level and a high position, and the profile width of high level is bigger compared with low level, this

Sample when truncated cone-shaped roller is tightly abutted against the low level of concavo-convex disk, truncated cone-shaped roller can prevent concavo-convex disk by

Low level goes to a high position, so as to prevent the rotation for the wheel being arranged on concavo-convex disk on same flanged pipe, plays

Effect to vehicle braking.During due to this brake, the strong constraint of concavo-convex disk overall size make use of

Effect, braking distance length, the potential safety hazard of brake failure are completely eliminated from structure, compared with profit

With the drum brake and disk brake of plane dry friction effect braking, the braking ability of this brake is more

To be reliable, and due to not using friction plate, therefore avoid the trouble and brake side-slipping of more renewal of facing renewal

Problem.

Brief description of the drawings

Fig. 1 is scheme of installation of the brake of one embodiment of the invention in truck axles；

Fig. 2 be Fig. 1 shown in concavo-convex disk, roller working condition exemplary position relation schematic diagram；

Fig. 3 is the schematic front view of the first half upper half shells shown in Fig. 1；

Fig. 4 is the elevational schematic view of the first half upper half shells shown in Fig. 3；

Fig. 5 is the schematic rear view of the first half upper half shells shown in Fig. 3；

Fig. 6 is the schematic front view that the first half upper half shells shown in Fig. 3 install after hydraulic cylinder and truncated cone-shaped roller；

Fig. 7 is schematic cross-sectional view of the assembly at A-A shown in Fig. 6；

Fig. 8 is the schematic front view that the second half upper half shells shown in Fig. 1 install after hydraulic cylinder and truncated cone-shaped roller；

Fig. 9 is the schematic rear view of the second half upper half shells shown in Fig. 8；

Figure 10 is the schematic front view of concavo-convex disk shown in Fig. 1；

Figure 11 is the left view schematic diagram of concavo-convex disk shown in Figure 10；

Figure 12 is the schematic top plan view of concavo-convex disk shown in Figure 10；

Figure 13 is the schematic front view of lower half shell shown in Fig. 1；

Figure 14 is the elevational schematic view of lower half shell shown in Figure 13；

Figure 15 is the schematic front view after the first half upper half shells shown in Fig. 1, the second half upper half shells and lower half shell combination；

Figure 16 is the left view schematic diagram of assembly shown in Figure 15；

Figure 17 is the schematic rear view of assembly shown in Figure 15；

Figure 18 is the primary structure schematic diagram of the adoptable one of which control system of brake shown in Fig. 1；

Figure 19 is the combination diagram of the pedal of braking pedal mechanism and cam shown in Figure 18；

Figure 20 is the schematic front view of the adoptable one of which total allocation valve of control system shown in Figure 18；

Figure 21 is the left view schematic diagram of total allocation valve shown in Figure 20；

Figure 22 is schematic cross-sectional view of the total allocation valve at B-B shown in Figure 21；

Figure 23 is the schematic front view of the adoptable one of which terminal distribution valve of control system shown in Figure 18；

Figure 24 is the left view schematic diagram of terminal distribution valve shown in Figure 23；

In figure：1st, the first half upper half shells；11st, hydraulic cylinder installation cavity；12nd, spring chamber is hung；13rd, slide-and-guide groove

；14th, circlip is hung；15th, flange；16th, connecting portion；2nd, the second half upper half shells；21st, connecting portion；31

, cylinder body；32nd, cock body；33rd, it is servo-actuated spring-hanging column；4th, truncated cone-shaped roller；41st, roller shaft；5th, it is recessed

Convex disk；51st, mounting hole；52nd, low level；53rd, it is high-order；6th, lower half shell；61st, flange；62nd, connect

Flange；7th, central siphon；8th, flanged pipe；9th, steel ring；101st, terminal fuel feed pump；102nd, terminal oil return pipe

；103rd, terminal distribution valve；104th, fuel feed pump is divided；105th, oil return pipe is divided；106th, total allocation valve；107

, total fuel feed pump；108th, total oil return pipe；109th, oil storage tank；110th, die brake chamber；111st, change

Air valve；112nd, park control valve；113rd, oil return control valve；114th, braking pedal mechanism；1141st, rotating shaft.

Embodiment

The specific embodiment of the present invention is described further below in conjunction with the accompanying drawings.

As shown in Fig. 1~17, the brake of the present embodiment includes the first half upper half shells 1, the second half upper half shell 2, liquid

Cylinder pressure, truncated cone-shaped roller 4, concavo-convex disk 5 and lower half shell 6, the first half upper half shells 1 and the second half upper half shells 2 are left

Right fasten simultaneously is fixedly connected, and the first half the inner circumferential of upper half shell 1 is alternate is provided with three hydraulic cylinders, each hydraulic pressure

The part of the upper half shell 2 of the direction of cylinder the second half is telescopable portion, the telescopable portion can left and right it is flexible, institute

State and truncated cone-shaped roller 4 is provided with telescopable portion, the rotary centerline of truncated cone-shaped roller 4 can perpendicular to this

The telescopic direction of telescopic section, and the profile of truncated cone-shaped roller 4 towards the second half upper half shells 2 protrude from this can

Telescopic section, the oil inlet and oil-out communicated with the hydraulic cylinder is provided with the first half upper half shells 1,

The bottom of half upper half shell 1 is provided with the semicircle mounting hole for extending to its lower edge, the semicircle mounting hole

Periphery be provided with flange 15, the first half front sides of upper half shell 1 and the lower end of rear side are provided with horizontal company

Socket part 16, the first half upper half shells 1 are fixed on the flange of central siphon 7 by its flange 15；

It is provided with hydraulic cylinder and truncated cone-shaped roller 4 in second half upper half shells 2, and set location and the first half upper half shells 1

Interior hydraulic cylinder and the position of truncated cone-shaped roller 4 are symmetrical, be provided with the second half upper half shells 2 with it is described

The oil inlet and oil-out that hydraulic cylinder communicates, the bottom of the second half upper half shells 2, which is provided with, extends to its lower edge

Semicircle mounting hole, it is same with the semicircle mounting hole to surround physically being provided with for the semicircle mounting hole

The heart and connected sealing ring mounting groove, the second half front sides of upper half shell 2 and the lower end of rear side are provided with level

Connecting portion 21, the second half upper half shells 2 are arranged on flanged pipe 8 by its sealing ring mounting groove and sealing ring；

Concavo-convex disk 5 is provided centrally with mounting hole 51, and concavo-convex disk 5 is mounted and fixed on flange by the mounting hole 51

On pipe 8, the truncated cone-shaped roller 4 of the top of concavo-convex disk 5 in the first half upper half shells 1 and the second half upper half shells 2

Between, card that the concavo-convex both sides of disk 5 are located at outside the mounting hole 51 is male and fomale(M＆F), and the male and fomale(M＆F) pair of both sides

Claim, male and fomale(M＆F) of the concavo-convex disk 5 per side is respectively provided with two relative low levels 52 and a two relative high positions 53, and two is low

The line of position 52 and the line of two high positions 53 are vertical, and low level 52 a to high position 53 and a high position 53 are flat to low level 52

Slip over and cross, and inclination angle everywhere per side male and fomale(M＆F) is inclined with the conical surface of the truncated cone-shaped roller 4 of respective side

Angle is consistent；

The top on the left side of lower half shell 6 and right side is respectively arranged with the semicircle mounting hole for extending to its top edge, lower half

The periphery of the semicircle mounting hole in the left side of shell 6 is provided with flange 61, surrounds the semicircle peace on the right side of lower half shell 6

Dress hole is physically provided with sealing ring mounting groove that is concentric with the semicircle mounting hole and being connected, lower half shell 6

Its flange 61 that passes on left be connected with the flange of central siphon 7, the right side of lower half shell 6 passes through sealing ring mounting groove

And the sealing ring is arranged on flanged pipe 8, the front side of the upper end of lower half shell 6, rear side, left side and right side are equal

Be provided with horizontal flange connector 62, flange connector 62 respectively with the first half upper half shells 1 and the second half upper half shells

The horizontal connecting portion connection of 2 lower ends, by the first half upper half shells 1, the second half upper half shells 2, lower half shell 6,

The space that central siphon 7 and flange sleeve 8 surround at least is contained with lubricating oil in lower half shell 6, concavo-convex disk 5 at least its

Lower end is immersed in lubricating oil.

Preferably, it is alternate in the first half upper half shells 1 and the second half upper half shells 2 to be provided with the He of hydraulic cylinder installation cavity 11

Hang spring chamber 12, each hydraulic cylinder installation cavity 11 is provided with extension spring in the circumferential both sides of the first half upper half shells 1

Chamber 12, the hydraulic cylinder are separately mounted in each hydraulic cylinder installation cavity 11, each hydraulic cylinder can

Telescopic section is provided with servo-actuated spring-hanging column 33 in the circumferential both sides of the first half upper half shells 1, hangs the side of spring chamber 12

Slide-and-guide groove 13 corresponding with servo-actuated spring-hanging column 33 is provided with wall, hangs and is provided with the bottom plate of spring chamber 12

With the extension circlip 14 of the servo-actuated face of spring-hanging column 33, the both ends of extension spring are hung in servo-actuated spring-hanging column 33 and hang spring

On ring 14.Hydraulic cylinder installation cavity 11 can be spacing well to hydraulic cylinder, and in truncated cone-shaped roller and bumps

When disk contacts, structural support is provided for hydraulic cylinder；Slide-and-guide groove 13, it is servo-actuated spring-hanging column 33, hangs circlip

14 and the setting of extension spring can ensure the timely return of telescopable portion of hydraulic cylinder after brake release, make truncated cone-shaped

Roller disengages with concavo-convex disk 5, avoids dragging the normal driving of influence, while ensure the use of this brake

Life-span.

Preferably, on the rotary centerline of one of truncated cone-shaped roller 4 in the first half upper half shells 1 and the first half

The vertical centerline of half-shell 1 is parallel, and another two truncated cone-shaped roller 4 is located at the both sides of the truncated cone-shaped roller 4, and

The angle of the rotary centerline of the both sides truncated cone-shaped roller 4 is more than 90 degree.The rotation of both sides truncated cone-shaped roller 4

The angle of center line, which is more than 90 degree, can ensure that at least one roller is in by concavo-convex disk low level all the time during braking

During being moved to a high position, it so can ensure that this brake has braking action all the time in braking procedure,

So as to reach good braking effect.

Preferably, the first half upper half shells 1 and the second half overall profiles of upper half shell 2 are in semi-circular shape, and the first half

Upper half shell 1 is fixed with the second half upper half shells 2 by being connected to the bolt of the two edge, and the first half upper half

Seam crossing outside shell 1 and the second half upper half shells 2 is by sealant sealing；The mounting hole at the concavo-convex center of disk 5 is flower

Keyhole, the position that concavo-convex disk 5 is installed on flanged pipe 8 are provided with external splines, concavo-convex disk 5 by its splined hole with

The cooperation of external splines on flanged pipe 8 is arranged on flanged pipe 8, and by fixture（As bolt, screw,

Bearing pin etc.）Concavo-convex disk 5 and flanged pipe 8 are fixed；The flange connector 62 of lower half shell 6 respectively with the first half upper half

Shell 1 and the horizontal connecting portion 16 and 21 of the second half lower ends of upper half shell 2 are bolted, and by the first half

The space sealing that upper half shell 1, the second half upper half shell 2, lower half shell 6, central siphon and flange sleeves 8 surround, sealing

Space when can prevent that concavo-convex disk from rotating, the lubricating oil splash taken up to outside.

Preferably, each hydraulic cylinder includes cylinder body 31 and cock body 32, and cock body 32 is sealingly mounted at one end of cylinder body 31

, and cylinder body 31 can move relative to cock body 32, the telescoping section is divided into cylinder body 31, is provided with cock body 32

Connect the fuel feed hole and oil outlet at its both ends, one end of the fuel feed hole and oil outlet respectively with through it just

To the first half upper half shells 1 or the fuel inlet fittings of the second half upper half shells 2 connected with back leakage connection, the oil-feed

Valve element and spring are at least installed, the tapering point of the valve element is resisted against on fuel inlet fitting, the valve element in hole

The other end is resisted against on spring, and valve element and spring are at least provided with the oil outlet, the taper of the valve element

End is resisted against on the step in oil outlet, and the other end of the valve element is resisted against on spring, the other end of spring

It is resisted against on back leakage connection.The cock body being combined into one with respect to fuel feed hole and oil outlet, the cock body of this structure exist

After brake release the hydraulic oil in hydraulic cylinder can be made to circulate well, so that the hydraulic oil in hydraulic cylinder is protected

Cleaning is held, and then extends the service life of hydraulic cylinder.

As shown in Fig. 1 and Figure 18~24, it is preferable that the brake also includes control system, the control system

Including terminal fuel feed pump 101, terminal oil return pipe 102, terminal distribution valve 103, divide fuel feed pump 104, divide back

Oil pipe 105, total allocation valve 106, total fuel feed pump 107, total oil return pipe 108, oil storage tank 109, braking of dying

Air chamber 110, tracheae, scavenging air valve 111, park control valve 112, oil return control valve 113 and brake pedal machine

Structure 114, fuel supply chamber and oil back chamber are provided with terminal distribution valve 103, one is provided with terminal distribution valve 103

What is pair connected with its fuel supply chamber and oil back chamber divides oil-feed port and divides oil return opening and more than one pair of terminal oil-feed port

With terminal oil return opening, six hydraulic cylinders for often covering brake pass through terminal fuel feed pump 101 and terminal oil return pipe

102 are connected with the terminal oil-feed port and terminal oil return opening of terminal distribution valve 103 respectively, are set in total allocation valve 106

Fuel supply chamber and oil back chamber are equipped with, a pair are connected with total allocation valve 106 and is connected respectively with its fuel supply chamber and oil back chamber

Logical total fuel feed pump 107 and total oil return pipe 108 and more than one pair of point of fuel feed pump 104 and divide oil return pipe 105,

Point fuel feed pump 104 and divide oil return pipe 105 respectively with dividing oil-feed port and divide oil return opening to connect on terminal distribution valve 103

Connect, total fuel feed pump 107 connects with the oil-out of oil storage tank 109, total oil return pipe 108 and park control valve 112

The connection of a port, another port of park control valve 112 and a port of oil return control valve 113

Connection, another port of oil return control valve 113 are connected with the oil return opening of oil storage tank 109, oil return control valve

The aperture of 113 at least one port and keying are controlled, and oil storage tank 109 is fixedly arranged above brake chamber of dying

110, force feed piston is provided with oil storage tank 109, and the push rod for brake chamber 110 of dying is connected with force feed piston

, scavenging air valve 111 at least one air inlet, a gas outlet and an exhaust outlet, the air inlet and compression

Source of the gas（Such as air accumulator, air pump）Connection, the gas outlet pass through tracheae and the gas for brake chamber 110 of dying

Press chamber connection, scavenging air valve 111 respectively by park control valve 112 and the independent control of braking pedal mechanism 114, and

Oil return control valve 113 is controlled by braking pedal mechanism 114, after park control valve 112 are closed, scavenging air valve

111 exhaust outlet connects with gas outlet, after park control valve 112 are opened, the air inlet of scavenging air valve 111 with

Gas outlet connects, and after brake pedal is stepped on, the exhaust outlet of scavenging air valve 111 connects with gas outlet, oil return control

The controlled port of valve 113 processed is closed or aperture reduces, when having put brake pedal, the air inlet of scavenging air valve 111

Mouth connects with gas outlet, and the controlled port of oil return control valve 113 is opened or aperture increase.

Preferably, the longer terminal fuel feed pump 101 of length, its caliber is corresponding relatively thick, so as to make concavo-convex disk as far as possible

The oil-feed simultaneously of the hydraulic cylinder of 5 both sides, and then make the both sides of concavo-convex disk 5 simultaneously by the size of truncated cone-shaped roller 4

Equal active force, concavo-convex disk 5 is prevented to be pressed towards side or be subject to crushing.

Preferably, scavenging air valve 111 is two position three-way valve.Two position three-way valve is due to there was only two operating positions, therefore more

It is easily controlled and uses.

Preferably, brake chamber 110 of dying includes cylinder block, spring, piston, push rod and cylinder head, cylinder head

Installed in one end of cylinder block, cylinder block is isolated into spring cavity and atmospheric pressure cavity by piston, on the wall of spring cavity

Ventilation mouth is provided with, spring is arranged in spring cavity, and push rod is connected on piston, and push rod stretches out cylinder

In vitro, the force feed piston connection that push rod is stretched out in one end and oil storage tank outside cylinder block.

Preferably, scavenging air valve 111 includes valve seat and valve element, and air inlet, gas outlet, exhaust are provided with the valve seat

Mouth and valve element gathering hole, the valve element are in ladder circle cylindricality, and its big end, which has from end face, extends to valve element entity

Interior venthole, the venthole connect with the gas outlet on valve seat, are provided with to go out with this in the side wall of valve element

The air admission hole that stomata connects with the air inlet, and the steam vent connected with the venthole and the exhaust outlet

, the air admission hole and steam vent are elongate holes, and the small end of valve element stretches out the valve element gathering hole, and

It is connected with braking pedal mechanism 114, its rotation is controlled by braking pedal mechanism 114.The air admission hole of strip

Can effectively improve air inlet and exhaust velocity with steam vent, so as to improve the sensitivity of brakes, realize and

When braking or in time release braking.

Preferably, oil return control valve 113 includes valve seat, valve rod, stage clip and pressure cap, and two are provided with the valve seat

Port and a valve rod gathering hole, one of port and valve rod gathering hole face, one end of valve rod is cone

Shape end, open-ended stage clip mounting groove is axially provided with the other end, the tapering point of valve rod is grasped through valve rod

Make mouth sealing to stretch into valve seat, and be resisted against on the port of valve rod gathering hole face, the other end of valve rod is put

In outside valve seat, being provided with stage clip in stage clip mounting groove, pressure cap is pressed in the upper end of stage clip, and its inner surface with

The outer surface of the stage clip installation end of valve rod is slidably matched, and brake pedal is arranged on cam, and with cam

Rotating shaft 1141 is rotating shaft, and cam is pressed on pressure cap.By the way that brake pedal is arranged on cam, utilization is convex

The locking effect of wheel, can make operation of the brake pedal to oil return control valve valve rod relatively reliable.

The course of work of the brake of the present embodiment is：（1）During braking, brake pedal is stepped on, now brake is stepped on

Trigger structure makes the exhaust outlet of scavenging air valve 111 be connected with gas outlet, while makes the controlled logical of oil return control valve 113

Mouth is closed or aperture reduces, and the compressed gas died in the atmospheric pressure cavity of brake chamber 110 is through scavenging air valve 111

Exhaust outlet is discharged, now, the compression spring return died in brake chamber 110, by brake chamber 110

Piston, the force feed piston in push rod and oil storage tank 109 push, so as to by hydraulic oil through total fuel feed pump 107

Total allocation valve 106 is pressed into, then through dividing fuel feed pump 104, terminal distribution valve 103 and terminal fuel feed pump 101 to arrive

Up in the fuel feed hole of cock body 32, then hydraulic oil pushes the valve element in the fuel feed hole of cock body 32 open, into hydraulic pressure

In cylinder, now, the closing of controlled port or aperture due to oil return control valve 113 are smaller, the liquid in hydraulic cylinder

Force feed can not flow back or can not all flow back, and now the hydraulic oil of accumulation just promotes cylinder body 31 to stretch in hydraulic cylinder

Go out, so that the truncated cone-shaped roller of concavo-convex disk both sides is tightly abutted against the both sides of concavo-convex disk, due to concavo-convex disk

Both sides be symmetrically arranged with low level and a high position, the profile width of high level is bigger compared with low level, so works as circle

When platform shape roller is tightly abutted against the low level of concavo-convex disk, truncated cone-shaped roller can prevent concavo-convex disk from being turned by low level

To a high position, so as to prevent the rotation for the wheel being arranged on concavo-convex disk on same flanged pipe, make vehicle deceleration

Or stop motion；In braking procedure, the lubricating oil that the concavo-convex disk of rotation is carried and splashed both can be to round platform

The contact position of shape roller and concavo-convex disk is lubricated, and again can be taken away heat caused by contact position, and pass through

It is splashed on the wall of the first upper half shell, the second upper half shell and lower half shell, rapidly heat scatters and disappears, so as to

Truncated cone-shaped roller and concavo-convex disk is remained at a suitable operating mode, and then improve circle to greatest extent

The service life of platform shape roller and concavo-convex disk；（2）When needing to release braking, brake pedal has been put, this

When braking pedal mechanism 114 air inlet of scavenging air valve 111 is connected with gas outlet, while make oil return control valve

113 controlled port is opened or aperture increase,（The compressed gas sources such as air accumulator）Compressed gas is through scavenging air valve

111 gas outlet enters in the atmospheric pressure cavity for brake chamber 110 of dying, and now, dies in brake chamber 110

Compression spring is compressed, and the force feed died in the piston in brake chamber 110, push rod and oil storage tank 109 is lived

Plug is jacked up, meanwhile, the concavo-convex disk 5 of rotation pushes out truncated cone-shaped roller 4, the cylinder body 31 and circle of hydraulic cylinder

Platform shape roller 4 is retracted in the presence of the extruding force of concavo-convex disk 5 and tension spring tension, now, in hydraulic cylinder

Hydraulic oil pushes the valve element in the spill port of cock body 32 open under the extruding of cylinder body 31, through terminal oil return pipe 102

, terminal distribution valve 103, divide oil return pipe 105, total allocation valve 106, total oil return pipe 108, braking valve for vehicle

112 and oil return control valve 113 return in oil storage tank, treat that truncated cone-shaped roller 4 disengages with concavo-convex disk 5, make

It is dynamic to release；（3）When needing parking, close park control valve 112, now with park control valve 112

The exhaust outlet of the scavenging air valve 111 of linkage is connected with gas outlet, and the way to cycle oil of total oil return pipe 108 is cut off,

In hydraulic cylinder after oil-feed, it is impossible to oil return, the hydraulic oil of the interior accumulation of hydraulic cylinder promote cylinder body 31 to stretch out, so as to

The truncated cone-shaped roller of concavo-convex disk both sides is tightly abutted against the both sides of concavo-convex disk, reach the purpose of parking；（4

）When control system is died, after stepping on brake pedal, braking pedal mechanism makes the exhaust outlet of scavenging air valve 111

Connected with gas outlet, while reduce the controlled port closing of oil return control valve 113 or aperture, braking of dying

Exhaust outlet discharge of the compressed gas through scavenging air valve 111 in the atmospheric pressure cavity of air chamber 110, now, braking of dying

Compression spring return in air chamber 110, by the piston in brake chamber 110, push rod and oil storage tank 109

Force feed piston pushes, and so as to which hydraulic oil is pressed into total allocation valve 106 through total fuel feed pump 107, is then supplied through point

Oil pipe 104, terminal distribution valve 103 and terminal fuel feed pump 101 are reached in the fuel feed hole of cock body 32, then hydraulic pressure

Oil pushes the valve element in the fuel feed hole of cock body 32 open, into hydraulic cylinder, now, due to oil return control valve 113

Controlled port close or aperture it is smaller, the hydraulic oil in hydraulic cylinder can not flow back or can not all flow back,

Now the hydraulic oil of accumulation just promotes cylinder body 31 to stretch out in hydraulic cylinder, so that the truncated cone-shaped of concavo-convex disk both sides

Roller is tightly abutted against the both sides of concavo-convex disk, so as to prevent the car being arranged on concavo-convex disk on same flanged pipe

The rotation of wheel, make vehicle deceleration or stop motion, so that it is guaranteed that traffic safety.

During due to this brake, the strong constraint of concavo-convex disk overall size make use of to act on, from structure thoroughly

Braking distance length, the potential safety hazard of brake failure are eliminated, is made compared with using plane dry friction effect

Dynamic drum brake and disk brake, the braking ability of this brake is more reliable, and due to no longer

Using friction plate, therefore the problem of avoid the trouble and brake side-slipping of more renewal of facing renewal.

Therefore the present invention solves that existing brake performance reliability is poor, needs frequent more renewal of facing renewal

And the problem of brake side-slipping, reliable with braking ability, braking effect is good, use cost is low and user

Just the advantages of.

It is apparent that unique embodiment of above-described embodiment and non-invention, before its technological essence is not departed from

Put, many simple changes can also be made, such as one hole of fuel feed hole and spill port of hydraulic cylinder；Control

System and its building block use other forms, and so on, here is omitted.

Particularly point out：The fuel feed hole and spill port of the hydraulic cylinder of the present invention are not strictly defined as two holes, it is clear that

Ground, oil-feed and oil return function are undertaken with a hole, it is equally feasible.

Embodiments of the invention are explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned reality

Example is applied, in those of ordinary skill in the art's possessed knowledge, the present invention can also not departed from

Various change is made obtaining on the premise of objective, also should be regarded as protection scope of the present invention.

Claims (10)

1. A kind of 1. brake, it is characterised in that：Including the first half upper half shells, the second half upper half shells, hydraulic cylinder, truncated cone-shaped roller,Concavo-convex disk and lower half shell, the first half upper half shell and the second half upper half shells or so are fastened and are fixedly connected, on described the first halfHalf-shell inner circumferential is alternate to be provided with three hydraulic cylinders, and the part of the upper half shell of the direction of each hydraulic cylinder the second half is telescoping sectionPoint, the telescopable portion can left and right it is flexible, truncated cone-shaped roller is provided with the telescopable portion, in the rotation of truncated cone-shaped rollerHeart line perpendicular to the telescopable portion telescopic direction, and the profile of truncated cone-shaped roller towards the second half upper half shells protrude from this canTelescopic section, is provided with the oil inlet and oil-out communicated with the hydraulic cylinder on the first half upper half shell, and described the first halfThe bottom of upper half shell is provided with the semicircle mounting hole for extending to its lower edge, and the periphery of the semicircle mounting hole is provided with methodOrchid, the first half front sides of upper half shell and the lower end of rear side are provided with horizontal connecting portion, and the first half upper half shell leads toIts flange is crossed to be fixed on the flange of central siphon；Hydraulic cylinder and truncated cone-shaped roller are provided with the second half upper half shell, and is setPosition and the hydraulic cylinder in the first half upper half shell and the position of truncated cone-shaped roller are symmetrical, on the second half upper half shellIt is provided with the oil inlet and oil-out communicated with the hydraulic cylinder, the bottom of the second half upper half shell, which is provided with, to be extended under itThe semicircle mounting hole at edge, surround physically being provided with concentric with the semicircle mounting hole and being connected for the semicircle mounting holeSealing ring mounting groove, the second half front sides of upper half shell and the lower end of rear side be provided with horizontal connecting portion, described2 half upper half shells are arranged on flanged pipe by its sealing ring mounting groove and sealing ring；

   The concavo-convex disk is provided centrally with mounting hole, and concavo-convex disk is mounted and fixed on the flanged pipe by the mounting hole,Between truncated cone-shaped roller of the top of concavo-convex disk in the first half upper half shell and the second half upper half shells, concavo-convex disk both sides positionIt is male and fomale(M＆F) in the card outside the mounting hole, and the male and fomale(M＆F) of both sides is symmetrical, and male and fomale(M＆F) of the concavo-convex disk per side hasThere are a two relative low levels and relative two high-order, the line of two low levels and two high-order lines are vertical, low level to a high-order and high positionSeamlessly transitted to low level, and inclination angle of the inclination angle everywhere per side male and fomale(M＆F) with the conical surface of the truncated cone-shaped roller of respective sideIt is consistent；

   The top on the left of the lower half shell and right side is respectively arranged with the semicircle mounting hole for extending to its top edge, and lower half shell is leftThe periphery of the semicircle mounting hole of side is provided with flange, surround the semicircle mounting hole on the right side of lower half shell be physically provided withThe concentric and connected sealing ring mounting groove of the semicircle mounting hole, the lower half shell pass on left its flange and the central siphonFlange is connected, and the right side of lower half shell is arranged on flanged pipe by sealing ring mounting groove and the sealing ring, lower half shell upper endFront side, rear side, left side and right side are provided with horizontal flange connector, the flange connector respectively with the first half upper half shells andThe horizontal connecting portion connection of 2 half upper half shell lower ends, by the first half upper half shells, the second half upper half shell, lower half shell, central siphon and methodsThe space that orchid set surrounds at least is contained with lubricating oil in lower half shell, and the concavo-convex disk at least its lower end is immersed in lubricating oil.
2. A kind of 2. brake according to claim 1, it is characterised in that：The first half upper half shell and the second half upper half shellsInside alternate to be provided with hydraulic cylinder installation cavity and hang spring chamber, each hydraulic cylinder installation cavity is in the circumferential both sides of the first half upper half shellsBe provided with and hang spring chamber, the hydraulic cylinder is separately mounted in each hydraulic cylinder installation cavity, each hydraulic cylinder it is scalablePart is provided with servo-actuated spring-hanging column in the circumferential both sides of the first half upper half shells, be provided with the side wall for hanging spring chamber with it is describedSlide-and-guide groove corresponding to servo-actuated spring-hanging column, hang be provided with the bottom plate of spring chamber with the hanging spring hook of the servo-actuated spring-hanging column face orCirclip is hung, the both ends of extension spring are hung in the servo-actuated spring-hanging column and hanging spring hook or hung on circlip.
3. A kind of 3. brake according to claim 1, it is characterised in that：One of circle in the first half upper half shellThe rotary centerline of platform shape roller is parallel with the vertical centerline of the first half upper half shells, and another two truncated cone-shaped roller is located at the round platformThe both sides of shape roller, and the angle of the rotary centerline of the both sides truncated cone-shaped roller is more than 90 degree.
4. A kind of 4. brake according to claim 1, it is characterised in that：The first half upper half shell and the second half upper half shellsOverall profile is in semi-circular shape, and the first half upper half shell and the second half upper half shells are by being connected to the spiral shell of the two edgeBolt is fixed, and the seam crossing outside the first half upper half shells and the second half upper half shells is by sealant sealing；The concavo-convex disk centerMounting hole is splined hole, and the position that concavo-convex disk is installed on the flanged pipe is provided with external splines, and the concavo-convex disk passes through its splineHole and the cooperation of the external splines on flanged pipe are arranged on flanged pipe, and are fixed concavo-convex disk and flanged pipe by fixture；It is describedHorizontal connecting portion of the flange connector of lower half shell respectively with the first half upper half shells and the second half upper half shell lower ends is connected by boltConnect, and the space sealing surrounded by the first half upper half shells, the second half upper half shell, lower half shell, central siphon and flange sleeves.
5. A kind of 5. brake according to claim 1, it is characterised in that：Each hydraulic cylinder includes cylinder body and cock body,The cock body is sealingly mounted at one end of cylinder body, and cylinder body can move relative to cock body, and the telescoping section is divided into cylinder body, the plugBe provided with the fuel feed hole and oil outlet for connecting its both ends in vivo, one end of the fuel feed hole and oil outlet respectively with through its faceThe first half upper half shells or the fuel inlet fittings of the second half upper half shells connected with back leakage connection, valve is at least installed in the fuel feed holeCore and spring, the tapering point of the valve element are resisted against on fuel inlet fitting, and the other end of the valve element is resisted against on spring, the oil outletValve element and spring are inside at least installed, the tapering point of the valve element is resisted against on the step in oil outlet, and the other end of the valve element supportsLean against on spring, the other end of spring is resisted against on back leakage connection.
6. A kind of 6. brake according to any one of claim 1 to 5, it is characterised in that：The brake also includes controlSystem, the control system include terminal distribution valve, terminal fuel feed pump, terminal oil return pipe, divide fuel feed pump, divide oil return pipe, total scoreWith valve, total fuel feed pump, total oil return pipe, oil storage tank, brake chamber of dying, tracheae, scavenging air valve, park control valve, oil return control valveAnd braking pedal mechanism, be provided with fuel supply chamber and oil back chamber in the terminal distribution valve, be provided with terminal distribution valve a pair withWhat its fuel supply chamber connected with oil back chamber divides oil-feed port and divides oil return opening and more than one pair of terminal oil-feed port and terminal oil return opening, oftenCover six hydraulic cylinders of brake and pass through terminal fuel feed pump and terminal oil return pipe the terminal fuel feeding with the terminal distribution valve respectivelyMouth is connected with terminal oil return opening, and fuel supply chamber and oil back chamber are provided with the total allocation valve, a pair points are connected with total allocation valveThe total fuel feed pump and total oil return pipe and more than one pair of point of fuel feed pump that are not connected with its fuel supply chamber and oil back chamber and divide oil return pipe, instituteState point fuel feed pump and divide oil return pipe respectively with dividing oil-feed port and divide oil return opening to be connected on terminal distribution valve, total fuel feed pump withThe oil-out connection of oil storage tank, the port connection of total oil return pipe and park control valve, another port of park control valveIt is connected with a port of oil return control valve, another port of oil return control valve and the oil return opening of oil storage tank connect, described timeThe aperture of at least one port of oil control valve and keying are controlled, and the oil storage tank is fixedly arranged above brake chamber of dying, describedForce feed piston is provided with oil storage tank, the push rod of the brake chamber of dying is connected with force feed piston, and the scavenging air valve is at leastOne air inlet, a gas outlet and an exhaust outlet, the air inlet connect with compressed gas source, and the gas outlet passes through tracheaeConnected with the atmospheric pressure cavity for brake chamber of dying, the scavenging air valve respectively by park control valve and braking pedal mechanism independent control,And oil return control valve is controlled by braking pedal mechanism, after park control valve is closed, the exhaust outlet of the scavenging air valve and gas outletConnection, after park control valve is opened, the air inlet of the scavenging air valve connects with gas outlet, described after brake pedal is stepped onThe exhaust outlet of scavenging air valve is connected with gas outlet, and the controlled port of the oil return control valve is closed or aperture reduces, and is braked when having putDuring pedal, the air inlet of the scavenging air valve connects with gas outlet, and the controlled port of the oil return control valve is opened or aperture increase.
7. A kind of 7. brake according to claim 6, it is characterised in that：The scavenging air valve is two position three-way valve.
8. A kind of 8. brake according to claim 6, it is characterised in that：The brake chamber of dying includes cylinder block, bulletSpring, piston, push rod and cylinder head, the cylinder head are arranged on one end of cylinder block, and cylinder block is isolated into spring by the pistonChamber and atmospheric pressure cavity, ventilation mouth are provided with the wall of the spring cavity, the spring is arranged in spring cavity, and the push rod is connected toOn piston, and push rod is stretched out outside cylinder block, the force feed piston connection that the push rod is stretched out in one end and oil storage tank outside cylinder block.
9. A kind of 9. brake according to claim 6, it is characterised in that：The scavenging air valve includes valve seat and valve element, the valveAir inlet, gas outlet, exhaust outlet and valve element gathering hole are provided with seat, the valve element is in ladder circle cylindricality, and its big end has from endThe venthole that face is extended in valve element entity, the venthole connect with the gas outlet, are provided with to go out with this in the side wall of valve elementThe air admission hole that stomata connects with the air inlet, and the steam vent connected with the venthole and the exhaust outlet, the air admission holeIt is elongate holes with steam vent, the small end of valve element stretches out the valve element gathering hole, and is connected with braking pedal mechanism, by brakingPedal gear controls its rotation.
10. A kind of 10. brake according to claim 6, it is characterised in that：The oil return control valve include valve seat, valve rod,Stage clip and pressure cap, two ports and a valve rod gathering hole are provided with the valve seat, one of port and valve rod gathering hole is justRight, one end of the valve rod is tapering point, and open-ended stage clip mounting groove, the cone of the valve rod are axially provided with the other endShape end is stretched into valve seat through the sealing of valve rod gathering hole, and is resisted against on the port of valve rod gathering hole face, and the other end of valve rod is putIn outside valve seat, being provided with stage clip in the stage clip mounting groove, the pressure cap is pressed in the upper end of stage clip, and its inner surface and valve rodThe outer surface of stage clip installation end is slidably matched, and brake pedal is arranged on cam, and using the rotating shaft of cam as rotating shaft, the camIt is pressed on pressure cap.