Background technology
For the vehicle for using Pneumatic brake systems, the brake safe of trailer or semitrailer in vehicle travel processCritically important, trailer only has container not have headstock, and tractor must be configured in trailer traveling, is made when needing driving in vehicle travel processWhen dynamic, tractor has respectively independent braking system respectively with trailer, and law on road traffic safety rule require tractor and trailerShould have while braking function.Since the braking gas source of existing tractor is provided by the gas receiver of tractor, trailer braking protection valveAir source is also to be provided by the gas receiver of tractor, since trailer is connected to behind tractor, the brake pipe of trailerRoad is longer, and when driving process needs service brake, trailer braking protection valve can lag behind tractor braking, can cause to lead in braking processDraw the phenomenon that vehicle is first braked and braked after trailer, so as to cause collision of the trailer to tractor, there are traffic safety hidden danger, it would be highly desirable toIt improves.
The Chinese utility model patent of Patent No. ZL200420051745.2 discloses a kind of emergency relay valve and carriesThe trailer braking protection valve control device of the valve, it includes housing, and upper part of the housing sets pneumatic control mouth, middle part set can vertical sliding workPlug, pneumatic control mouth connect the chamber above piston；Piston lower portion sets guiding valve, and spool is set in guiding valve, is set below spoolResetting spring；Guiding valve carries air inlet and gas outlet, and the Electronic control mouth with chamber, Electronic control mouth are also set up on housingValve by solenoid valve control is set.Using the utility model, emergency relay valve can arrive transmitting slower pneumatic signalJust start to act under the control of electric signal before, realization and main vehicle synchronous braking, be made so as to eliminate trailer braking protection valve lagInto whipping phenomenon, improve the safety of automobile brake.But the utility model fully rely on upper stroke switch on foot valve andLower stroke switch controls and adjusts brake chamber pressure, and pressure control structure and mode machinery are single.In addition, the technical solutionThe not external pressure sensor in gas outlet can not monitor gas outlet pressure, and the control program of solenoid valve can not be by braking gasChamber pressure rationally controls solenoid valve, thus can not realize and gas outlet brake chamber pressure is pressurized, pressurize and Decompression Controlling,And then it can not realize the anti-lock function of ABS.
The Chinese invention patent of Patent No. ZL200510043774.3 discloses a kind of double pipe electrically-controlled trailer brake valve,On in original valve body, throttle valve, valve body on the basis of relay piston, lower relay piston assembly and emergency piston assembly, addSolenoid electric valve and load transducer, lower relay piston internal diameter is steps to successively decrease, and is sleeved on the outer wall of lower relay piston every disk,And sealed with valve interior wall and form vacuum chamber prevention E and air pressure adjusting cavity F, air pressure adjustment piston seal is mounted on lower relay pistonIt is interior, be pressed with pressure spring between lower face and lower relay piston, be equipped in lower relay piston side wall connection control chamber C with intoThe air flue of gas port, the air flue of connection output cavity D and air pressure regulating piston upper surface, connection air pressure adjustment piston lower surface and air pressureThe air flue of adjusting cavity F opens up the air flue of connection vacuum chamber prevention E and solenoid electric valve gas off-take on the side wall of valve body, connects electromagnetismThe air flue of control valve air intake duct.It is good that the invention can automatically regulate braking pressure, high sensitivity, excellent working performance, stability.But the double pipe electrically-controlled trailer brake valve of the invention is mounted in the trailer valve on tractor, due to tractor braking gas source andThe gas receiver that the braking gas source of the double pipe electrically-controlled trailer brake valve relies on tractor provides, and trailer is to be connected to tractorBehind, therefore the brake piping of trailer is longer, when driving process needs service brake, trailer braking protection valve can lag behind tractor systemThe phenomenon that moving, tractor being caused first to brake and braked after trailer in braking process, so as to which trailer be caused to rush tractorIt hits, there are traffic safety hidden danger, it would be highly desirable to improve.
Invention content
In order to solve above-mentioned existing emergency relay valve and trailer braking protection valve control device, double pipe electrically-controlled trailer with the valveTechnological deficiency existing for brake valve, the technical solution adopted by the present invention are specific as follows：
A kind of commercial vehicle trailer brake module, including ECU and integrated form trailer braking valve, the ECU is hung with the integrated formVehicle brake valve is connected, and the integrated form trailer braking valve includes upper valve body and lower valve body, between the upper valve body and lower valve bodyBe fixedly connected, the lower valve body is provided with the first delivery outlet and the second delivery outlet, two delivery outlet be separately positioned on it is described underThe rear portion and lower part of valve body are simultaneously circumscribed with first pressure sensor and second pressure sensor respectively, and two pressure sensor is equalIt is connected with the ECU.First delivery outlet controls wheel braking to trailer gas receiver discharge pressure, second delivery outletDevice.
Preferably, electromagnetic valve component is provided in the lower valve body, the electromagnetic valve component includes air inlet armature setComponent, exhaust armature collective component, magnetic head, into gas spring, valve seat, exhaust spring, the magnetic head respectively with the ECU, air inletArmature collective component is connected with exhaust armature collective component, the air inlet armature collective component and exhaust armature collective component itBetween in being adjacently positioned side by side, the air inlet armature collective component top is equipped with the valve seat, in the air inlet armature collective componentInto gas spring described in being set between top and the valve seat, the exhaust is set on the exhaust armature collective component topSpring is equipped with exhaust outlet in the exhaust armature collective component lower part, and the exhaust outlet is used for the off-load of admission pressure.
In any of the above-described scheme preferably, double-way check valve component, the bilateral list are provided in the lower valve bodyInclude switching piston, guide sleeve and plug to valve module, be internally provided with vertical cavity on the right side of the lower valve body, in the vertical cavityEquipped with the guide sleeve, the switching piston is set on the guide sleeve inner wall, the lower part of the vertical cavity is equipped with control mouth, instituteIt states lower valve body right end and is provided with lateral aperture, plug is housed in the lateral aperture.
In any of the above-described scheme preferably, horizontal cavity is provided in the lower valve body, the horizontal cavity is built-inThere is piston component, the piston component includes piston seat, piston, check valve, the first gasket, the second gasket, the first holdingFrame and the second retainer, the left end of the horizontal cavity are set with end cap, the left end of the end cap equipped with inlet suction port, it is described intoGas joint is air inlet, is sequentially arranged with from left to right from end cap inside along the horizontal cavity of the lower valve body describedPiston seat, spring, piston, check valve, the first gasket, the first retainer, the second gasket and the second retainer, the bilateralThe vertical cavity of check valve assembly is connected with the horizontal cavity.
In any of the above-described scheme preferably, it is fixedly connected between the upper valve body and lower valve body by installation bolt,Mating surface between the upper valve body and lower valve body positioned at first equipped at outlet port is sealed by the first O-ring, describedIt is located at the mating surface at the guide sleeve between upper valve body and lower valve body to be sealed by the second O-ring, at the top of the upper valve bodyEquipped with the first delivery outlet channel and the control mouth channel, at the first delivery outlet passway and the control mouth channelSteel ball is respectively provided at mouthful.
In any of the above-described scheme preferably, the cavity on the air inlet armature collective component top is set as the firstth area.
In any of the above-described scheme preferably, the cavity on the valve seat top is set as the secondth area.
In any of the above-described scheme preferably, the cavity on the guide sleeve top is set as third area, the guide sleeve middle partCavity be set as the 4th area.
In any of the above-described scheme preferably, the cavity on the right side of second gasket is set as the 5th area.
In any of the above-described scheme preferably, the cavity on the right side of first gasket is set as the 6th area.
A kind of vehicle, equipped with brake module, the brake module is braked for the commercial vehicle trailer of any of the above-described schemeModule.
Compared with the prior art, the invention has the advantages that：It is compact-sized, integrated level is high, powerful.ByOne delivery outlet and the second delivery outlet distinguish external first pressure sensor and second pressure sensor, to monitor the first delivery outletWith the gas pressure of the second delivery outlet, by by the pressure signal of two pressure sensor to ECU transmit, realize ECU intoPneumoelectric pivot collective component and exhaust armature collective component carry out reasonably being powered and powering off control, and gas is braked to two delivery outletThe gas pressure of room is pressurized, pressurize and Decompression Controlling, so as to fulfill the anti-lock function of ABS.It will be hung using electric-control systemThe braking gas source of vehicle is by being arranged on tractor location improvement to be arranged on trailer position, so as to substantially shorten brake piping distance,Pressure calibration is carried out by pressure sensor simultaneously, it is ensured that tractor braking time is synchronous with the holding of trailer braking protection valve time, maximumEnsure to limit vehicle and the safety of driver.The present invention passes through two not connected automatically controlled control gas circuits and Mechanical courseGas circuit control double-way check valve component carries out gas circuit switching, realizes the supply and discharge of gas pressure, by electromagnetic valve component intoRow gas pressure is adjusted, and the gas pressure change for passing through air inlet realizes the emergency braking to trailer.
Specific embodiment
The technical solution of the commercial vehicle trailer brake module is described in detail with reference to Fig. 1-4：
A kind of commercial vehicle trailer brake module, including ECU and integrated form trailer braking valve, the ECU is hung with the integrated formVehicle brake valve is connected, and the integrated form trailer braking valve includes upper valve body 7 and lower valve body 5, between upper valve body 7 and lower valve body 5It is fixedly connected, lower valve body 5 is provided with the first delivery outlet P21 and the second delivery outlet P22, and two delivery outlet is separately positioned on lower valveThe rear portion and lower part of body 5 are simultaneously circumscribed with first pressure sensor and second pressure sensor respectively, and two pressure sensor is equalIt is connected with the ECU.First delivery outlet P21 controls wheel braking to trailer gas receiver discharge pressure, the second delivery outlet P22Device.
Electromagnetic valve component is provided in lower valve body 5, the electromagnetic valve component includes air inlet armature collective component 18, exhaust electricityPivot collective component 22, magnetic head 25, into gas spring 20, valve seat 19, exhaust spring 21, magnetic head 25 respectively with the ECU, air inlet armatureCollective component 18 is connected with exhaust armature collective component 22, air inlet armature collective component 18 and exhaust armature collective component 22 itBetween in being adjacently positioned side by side, 18 top of air inlet armature collective component is equipped with valve seat 19, on 18 top of air inlet armature collective component andIt is set between valve seat 19 into gas spring 20, exhaust spring 21 is set on 22 top of exhaust armature collective component, in exhaust electricity22 lower part of pivot collective component is equipped with exhaust outlet P3, and exhaust outlet P3 is used for the off-load of admission pressure.
Double-way check valve component is provided in lower valve body 5, the double-way check valve component includes switching piston 15, guide sleeve 12With plug 14,5 right side of lower valve body is internally provided with vertical cavity, guide sleeve 12 in the vertical cavity is housed, is covered on 12 inner wall of guide sleeveEquipped with switching piston 15, the lower part of the vertical cavity is equipped with control mouth P4, and 5 right end of lower valve body is provided with lateral aperture, the levelPlug 14 is housed in hole.
Horizontal cavity is provided in lower valve body 5, piston component is housed in the horizontal cavity, the piston component includes livingObturating plug 3, piston 4, check valve 16, the first gasket 8, the second gasket 10, the first retainer 9 and the second retainer 11, it is describedThe left end of horizontal cavity is set with end cap 2, and the left end of end cap 2 is equipped with inlet suction port 1, is air inlet P1 at inlet suction port 1, from endThe inside of lid 2 along the horizontal cavity of lower valve body 5 be sequentially arranged with from left to right piston seat 3, spring 17, piston 4, check valve 16,First gasket 8, the first retainer 9, the second gasket 10 and the second retainer 11, the vertical blank of the double-way check valve componentChamber is connected with the horizontal cavity.
It is fixedly connected between upper valve body 7 and lower valve body 5 by installation bolt 24, the is located between upper valve body 7 and lower valve body 5Mating surface at one delivery outlet P21 is sealed by the first O-ring 6, is located at guide sleeve 12 between upper valve body 7 and lower valve body 5Mating surface be sealed by the second O-ring 13, the top of upper valve body 7 is equipped with the first delivery outlet P21 channels and control mouth P4 leads toRoad is respectively provided with steel ball 23 at the first delivery outlet P21 passways and control mouth P4 passways.
The cavity on 18 top of air inlet armature collective component is set as the first area A, and the cavity on 19 top of valve seat is set as secondArea B, the cavity on 12 top of guide sleeve are set as third area C, and the cavity at 12 middle part of guide sleeve is set as the 4th area D, the second gasket 10The cavity on right side is set as the 5th area E, and the cavity on 8 right side of the first gasket is set as the 6th area F, and 3 inner wall of piston seat is provided with theOne output channel, first output channel are set as District 7 G with the first delivery outlet P21 cavitys being connected.
The operation principle of the present invention：Include operation principle, the work of Mechanical course skidding of automatically controlled control skiddingMake principle and the operation principle of emergency braking, be described in detail below in conjunction with Fig. 1-4.
The operation principle of automatically controlled control skidding：
When normal vehicle operation, air inlet P1 has remained atmospheric pressure state, in air inlet P1 air pressures and the effect of spring 17Under, piston 4 is pushed to move right, closes the first gasket 8, opens the second gasket 10, meanwhile, the open-top list of air inlet P1 air pressuresTo valve 16, air pressure at this time is filled with air pressure by the first delivery outlet P21 to trailer gas receiver, and the first delivery outlet P21 is filled in air pressureWhile, by the inner passage of upper valve body 7, at the first area A of air pressure input air inlet armature collective component 18.
When needing brake, driver steps on foot brake valves, and trailer tail brake lamp is bright at this time, magnetic head after brake signal triggering25 are powered, and control air inlet armature collective component 18 and exhaust armature collective component 22 touch work, the first area A after magnetic head 25 is poweredIt is connected to the channel between the second area B through valve seat 19, while the channel of exhaust outlet P3 is closed, the air pressure of the first delivery outlet P21Switching piston 15 is pushed through the second area B to third area C by the first area A, switching piston 15 is made to be moved to control mouth P4 directions, makes theThe C air pressures of 3rd area reach the second delivery outlet P22 through the 4th area D, the 5th area E successively and convey gas pressure to brake chamber.
Since electric signal is faster than gas signal, and the trailer gas receiver being connected with the first delivery outlet P21 is mounted on trailer,Trailer gas receiver is nearer apart from trailer braking protection valve gas chamber, therefore the gas pressure of the second delivery outlet P22 establishes speed, can be moreGas pressure is established the excessively slow technology of speed and is asked when benefit brake pressure conveys gas pressure directly from tractor gas receiver to trailerTopic, so as to meet the regulation requirement of law on road traffic safety rule.
After brake, driver unclamps foot brake valves, and brake lamp is closed, and magnetic head 25 powers off, air inlet armature collective component18 and exhaust armature collective component 22 restore original operating state, the air pressure of the second delivery outlet P22 is successively through the 5th area E, the 4thIt is discharged after area D, third area C, the second area B, exhaust armature collective component 22 from exhaust outlet P3, at this time automatically controlled control braking process knotBeam.
The operation principle of Mechanical course skidding：
When needing brake, driver steps on foot brake valves, and trailer tail brake lamp is bright, if magnetic head 25 fails at this time, foot brake valvesThe air pressure of delivery outlet then acts on control mouth P4, and the air pressure of control mouth P4 pushes switching piston 15 to move upwards and seal along guide sleeve 12Third area C is blocked, the air pressure of control mouth P4 at this time reaches P2 delivery outlets through the 4th area D, the 5th area E successively and conveyed to brake chamberPressure.After brake, driver unclamps foot valve, and the air pressure of the second delivery outlet P22 is successively through the 5th area E, the 4th area D, controlIt is discharged after mouth P4 from foot brake valves exhaust outlet, Mechanical course braking process terminates at this time.
The operation principle of emergency braking：
As shown in figure 4, being reduced rapidly when tractor-trailer valve exports air inlet P1 gas pressures when orotracheal tube is broken, work as gasWhen body pressure value drops to defined atmospheric pressure value, piston 4 overcomes bullet under trailer gas receiver the first delivery outlet P21 gas pressuresThe pressure of spring 17 is moved to the left piston 4, and the 6th area's F channels are opened while piston 4 is moved to the left, and closes the 5th area E and leads toRoad, the air pressure of the first delivery outlet of trailer gas receiver P21 at this time successively through District 7 G, the 6th area F reach the second delivery outlet P22 toBrake chamber conveying air pressure, so as to fulfill emergency braking.
The present invention is compact-sized, it is only necessary to which smaller arrangement space is conducive to vehicle lightweight, while is integrated with a variety of braking worksCan, such as the Brake Assurance and emergency braking function after electric control braking function, conventional brake function, automatically controlled failure, substantially carryingProduction cost is further reduced while high working efficiency, has ensured traffic safety to the maximum extent.
The ECU（Electronic Control Unit）For electronic control unit, also known as " car running computer ", " vehicle mounted electricBrain " etc. is automobile specified microcomputerized controller.Mainly by microprocessor（CPU）, memory（ROM、RAM）, input/output interface（I/O）, analog-digital converter（A/D）And the large scale integrated circuits such as shaping, driving composition.Wherein, CPU is core, itThere is operation and control, at runtime, CPU acquires the signal of each sensor to engine, carries out operation, and by operationAs a result change signal in order to control, control the work of controlled device.ECU generally has fault self-diagnosis and defencive function, when beingWhen system generates failure, failure code can be recorded automatically in RAM and replacement is read from intrinsic program using safeguard measureProgram is to maintain engine to operate, while these fault messages can be shown on instrument board and keep not going out, can make car owner andWhen pinpoint the problems and automobile reached into repair shop.
The armature refers to realize mechanical energy in the mutual transfer process of electric energy, playing crucial and pivotal role portion in motorPart.For generator, it is the component for generating electromotive force, such as the rotor in dc generator, is determined in alternating current generatorSon；For motor, it is the component for generating electromagnetic force, such as the rotor in dc motor.Armature is equipped in motorThe component of coil, relative motion of the coil to magnetic field.In generator, induced electromotive force is generated in the coil of Forced rotation, is madeIt generates electricity.And in the motor, hot-wire coil is acted in magnetic field by Ampere force, it is made to be rotated in magnetic field.
A kind of vehicle, equipped with brake module, the brake module is that the commercial car of either a program in above-described embodiment is hungAutomobile-used brake module.
The present embodiment is only an optimal technical scheme, wherein involved each building block and connection relation and unlimitedThe setting and connection of each building block in a kind of this described following embodiment of the embodiment, the preferred embodimentRelationship can carry out arbitrary permutation and combination and form complete technical solution.