CN114110074A - A shock absorber with two-way locking device - Google Patents
A shock absorber with two-way locking deviceDownload PDFInfo
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- CN114110074A CN114110074ACN202111643507.5ACN202111643507ACN114110074ACN 114110074 ACN114110074 ACN 114110074ACN 202111643507 ACN202111643507 ACN 202111643507ACN 114110074 ACN114110074 ACN 114110074A
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- hydraulic
- shock absorber
- valve core
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/182—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein comprising a hollow piston rod
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3221—Constructional features of piston rods
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/362—Combination of sealing and guide arrangements for piston rods
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
- F16F9/435—Filling or drainage arrangements, e.g. for supply of gas via opening in cylinder wall
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/56—Means for adjusting the length of, or for locking, the spring or damper, e.g. at the end of the stroke
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
Technical Field
The invention relates to the technical field of hydraulic buffer structures, in particular to a shock absorber with a bidirectional locking device.
Background
The working principle of the double-acting cylinder shock absorber is as follows: during the compression stroke, the shock absorber is compressed, the piston in the shock absorber moves downwards at the moment, the volume of the lower chamber of the piston is reduced, the oil pressure is increased, oil flows to the chamber above the piston through the flow valve, part of space of the upper chamber is occupied by the shaft rod, the increased volume of the upper chamber is smaller than the reduced volume of the lower chamber, and part of oil pushes away the compression valve and flows back to the oil storage cylinder;
when the shock absorber is in an extension stroke, the wheels are equivalently far away from the vehicle body, the shock absorber is pulled to extend, at the moment, the piston of the shock absorber moves upwards, the oil pressure of the upper cavity of the piston rises, the circulating valve is closed, and oil in the upper cavity pushes the extension valve to flow into the lower cavity. The sum of the channel loading areas of the extension valve and the corresponding normally open slit is smaller than the sum of the cross-sectional areas of the compression valve and the corresponding normally open slit channel.
With the development of modern industry, the shock absorber is also applied to the square, and on some special vehicles, the shock absorber also plays an important role, but most special vehicles have different requirements on the effect of the shock absorber in different operation sections. For example, when a tank runs, particularly when the tank passes through an uneven ground, the shock absorber performs compression and stretching actions along with the fluctuation of a road surface to perform buffering and shock absorption, and the shock absorber is required to perform good shock absorption; and the tank requires the shock absorber to have the two-way hydraulic locking function again when the turret rotates and the gun barrel aims to provide the rigid support effect, and the tank is prevented from jumping up and down when the turret rotates and the aiming speed is influenced. In addition, if the shell is not rigidly supported during shooting, the shooting accuracy of the shell can be influenced. Most shock absorbers on the market do not have a bidirectional locking function, and the effect cannot meet the requirements of special vehicles.
Disclosure of Invention
In view of the above problems, the present invention provides a shock absorber with a bidirectional locking device, which locks two directions when the shock absorber does not need to be stretched, so that the shock absorber loses the shock absorbing effect temporarily, and the requirements of special vehicles are ensured.
A shock absorber with a two-way latch, comprising:
an outer cylinder;
an inner cylinder;
an end cap;
a first fixing sleeve;
a second fixing sleeve;
a shaft lever;
a piston;
and a guide sleeve;
the inner cylinder is arranged in the inner cavity of the outer cylinder, and a pressure storage cavity is formed between the periphery of the inner cylinder and the inner annular wall of the outer cylinder; the end cover is fixedly sleeved at one end of the outer cylinder and one end of the inner cylinder body in the length direction, and the guide sleeve is fixedly sleeved at the other end of the outer cylinder and the other end of the inner cylinder body in the length direction;
the inner end of the shaft rod penetrates through the center hole of the guide sleeve and then is connected with the piston, the piston divides the cavity of the inner cylinder into an upper cavity and a lower cavity, the upper cavity is arranged close to the guide sleeve, and the lower cavity is arranged close to the end cover;
the outer end of the shaft lever protrudes out of the guide sleeve and is fixedly connected with a first fixing sleeve;
a first flow channel communicated with the lower cavity and a second flow channel communicated with the pressure storage cavity are arranged in the end cover, the first flow channel and the second flow channel are communicated to a confluence cavity through corresponding confluence pipelines, a lower hydraulic valve core is axially inserted into the confluence cavity, a first return spring is integrated with the lower hydraulic valve core, a second fixing sleeve is mounted on an exposed end cover of the end cover, a lower hydraulic locking pipe joint is arranged on the periphery of the second fixing sleeve, a hydraulic flow cavity corresponding to the movable end of the lower hydraulic valve core is arranged on the second fixing sleeve, the lower hydraulic locking pipe joint is communicated with the hydraulic flow cavity, and the valve core end of the lower hydraulic valve core blocks the confluence pipeline communicated with the confluence cavity to the first flow channel and the second flow channel in a pressure state;
the hydraulic locking device comprises a shaft rod, a piston, a first fixed sleeve and a second fixed sleeve, wherein the shaft rod is a hollow rod, a bypass hole is formed in the position, close to the piston, of the inner end of the shaft rod, an upper hydraulic valve core is arranged in an inner end cavity of the shaft rod, a second return spring is sleeved at the lower end of the upper hydraulic valve core, a piston valve sheet group is sleeved at the center of the piston, the piston valve sheet group enters and exits the inner cavity of the shaft rod through hydraulic oil in a stressed state, the bypass hole is blocked by the upper hydraulic valve core in an upper end stressed state, an upper hydraulic locking pipe joint is arranged on the periphery of the first fixed sleeve, and the upper hydraulic locking pipe joint is communicated with an upper end hollow oil cavity of the shaft rod.
It is further characterized in that:
the bottom of the inner cylinder is provided with a bottom valve sheet set which ensures that a pressure cavity is opened under the condition of sufficient pressure;
the inner end of the piston is sleeved with the piston valve plate group, the upper part of the shaft lever, which corresponds to the inner cavity of the piston, is provided with a second bypass hole, the piston valve plate group enters the inner cavity of the shaft lever through the second bypass hole after receiving the opening of the pressure channel, and the front end of the upper hydraulic valve core locks the inlet and outlet channel of the second bypass hole under the stress state;
the periphery of the first fixing sleeve is provided with a dust cover, and the dust cover is used for dust prevention;
the first fixing sleeve and the second fixing sleeve are provided with joint bearings;
the lower part of the pressure accumulation cavity is used for storing hydraulic oil, the upper part of the pressure accumulation cavity is used for storing high-pressure nitrogen, the inner wall of the guide sleeve is provided with a liquid injection and gas injection hole, and the liquid injection and gas injection hole is communicated to the pressure accumulation cavity and is used for liquid injection and gas injection and overflow operation;
the valve core structures of the upper hydraulic valve core and the lower hydraulic valve core block the step holes at the corresponding positions through the conical surfaces to play a role of complete sealing;
the piston valve plate group is of a double-group valve plate type piston structure, double layers of tensile damping valve plates are arranged at the lower end of the piston valve plate group, and double layers of compression damping valve plates are arranged at the upper end of the piston valve plate group.
After the structure of the invention is adopted, when the shock absorber is not needed to play a shock absorption effect, the shaft rod does not need stretching and compressing actions; the external hydraulic device injects hydraulic oil with certain pressure through the upper hydraulic locking interface and the lower hydraulic locking interface, the hydraulic oil with certain pressure can push the hydraulic valve core, so that the hydraulic valve core seals an oil way of an internal side hole of the shock absorber firstly, when the hydraulic valve core moves forwards continuously, the valve core of the hydraulic valve core blocks a step hole in the oil way to play a role of complete sealing, at the moment, the hydraulic oil in the shock absorber cannot pass through the internal oil way, at the moment, the hydraulic oil cannot flow, the shock absorber loses the shock absorption effect, and the rigid support effect is provided; when the shock absorber is required to exert a shock absorption effect, the pressure of hydraulic oil which is injected at a certain pressure is released through an external device, the hydraulic valve core is rebounded to an initial point by the reset spring, the hydraulic oil in the shock absorber can be communicated through an oil way and circulates in the shock absorber to provide a compression damping force or a stretching damping force, and the shock absorption effect is realized; it is two directions of locking when the bumper shock absorber need not tensile and compression, and then makes the bumper shock absorber lose the shock attenuation effect temporarily, ensures special vehicle's demand.
Drawings
FIG. 1 is a front view cross-sectional structural schematic of the present invention;
FIG. 2 is a schematic diagram illustrating the principle of the upper locking operation of the present invention;
FIG. 3 is a schematic diagram illustrating the operation of the present invention when locking and unlocking;
FIG. 4 is a schematic diagram illustrating a first principle of a lower locking operation according to the present invention;
FIG. 5 is a second schematic diagram illustrating the principle of the lower locking operation of the present invention;
FIG. 6 is a first schematic diagram illustrating the operation of the present invention when the lower lock is unlocked;
FIG. 7 is a second schematic diagram illustrating the operation of the lower lock of the present invention when the lower lock is unlocked;
FIG. 8 is a schematic view of the mounting structure of the piston valve plate assembly of the present invention;
the names corresponding to the sequence numbers in the figure are as follows:
the hydraulic control valve comprises anouter cylinder 10, aninner cylinder 20, anupper chamber 21, alower chamber 22, anend cover 30, afirst flow passage 31, asecond flow passage 32, a confluence pipeline 33, aconfluence cavity 34, afirst fixing sleeve 40, an upper hydrauliclocking pipe joint 41, asecond fixing sleeve 50, a lower hydrauliclocking pipe joint 51, ahydraulic circulation cavity 52, ashaft rod 60, abypass hole 61, an upper endhollow oil cavity 62, asecond bypass hole 63, apiston 70, aguide sleeve 80, a liquid andgas injection hole 81, apressure accumulation cavity 90, anoil storage cavity 91, anair storage cavity 92, a lowerhydraulic valve core 100, afirst return spring 101, avalve core end 102, an upperhydraulic valve core 110, asecond return spring 111, a pistonvalve plate group 120, a tensiledamping valve plate 121, a compressiondamping valve plate 122, a bottomvalve plate group 130, adust cover 140 and a knuckle bearing 150.
Detailed Description
A shock absorber with a bidirectional locking device, see fig. 1-4, which comprises anouter cylinder 10, aninner cylinder 20, anend cover 30, afirst fixing sleeve 40, asecond fixing sleeve 50, ashaft 60, apiston 70 and aguide sleeve 80;
aninner cylinder 20 is arranged in the inner cavity of theouter cylinder 10, and apressure storage cavity 90 is formed between the periphery of theinner cylinder 20 and the inner annular wall of theouter cylinder 10; the end covers 30 are fixedly sleeved at the lower ends of theouter cylinder 10 and theinner cylinder 20 in the length direction, and theguide sleeves 80 are fixedly sleeved at the upper ends of theouter cylinder 10 and theinner cylinder 20 in the length direction;
the inner end of theshaft rod 60 penetrates through the center hole of theguide sleeve 80 and then is connected with thepiston 70, the cavity of theinner cylinder 20 is divided into anupper chamber 21 and alower chamber 22 by thepiston 70, theupper chamber 21 is arranged close to theguide sleeve 80, thelower chamber 22 is arranged close to theend cover 30,
the outer end of theshaft rod 60 protrudes out of theguide sleeve 80 and is fixedly connected with afirst fixing sleeve 40;
afirst flow passage 31 communicated with thelower cavity 22 and asecond flow passage 32 communicated with thepressure accumulation cavity 90 are arranged in theend cover 30, thefirst flow passage 31 and thesecond flow passage 32 are communicated to aconfluence cavity 34 through corresponding confluence pipelines 33, a lowerhydraulic valve core 100 is axially inserted in theconfluence cavity 34, afirst return spring 101 is integrated in the lowerhydraulic valve core 100, asecond fixing sleeve 50 is arranged on an exposed end cover of theend cover 30, a lower hydrauliclocking pipe joint 51 is arranged on the periphery of thesecond fixing sleeve 50, ahydraulic flow cavity 52 corresponding to the movable end of the lowerhydraulic valve core 100 is arranged in thesecond fixing sleeve 50, the lower hydrauliclocking pipe joint 51 is communicated with thehydraulic flow cavity 52, and avalve core end 102 of the lowerhydraulic valve core 100 blocks the confluence pipeline 33 of theconfluence cavity 34 communicated with thefirst flow passage 31 and thesecond flow passage 32 in a pressure state;
theshaft rod 60 is a hollow rod, abypass hole 61 is formed in the position, close to thepiston 70, of the inner end of theshaft rod 60, an upperhydraulic valve core 110 is arranged in an inner cavity of the inner end of theshaft rod 60, asecond return spring 111 is sleeved at the lower end of the upperhydraulic valve core 110, a pistonvalve sheet group 120 is sleeved at the center of thepiston 70, the pistonvalve sheet group 120 enters and exits the inner cavity of theshaft rod 60 through hydraulic oil in a stressed state, thebypass hole 61 is blocked by the upperhydraulic valve core 110 in an upper end stressed state, an upper hydrauliclocking pipe joint 41 is formed in the periphery of thefirst fixing sleeve 40, and the upper hydrauliclocking pipe joint 41 is communicated with an upperhollow oil cavity 62 of theshaft rod 60.
In specific implementation, the bottom of theinner cylinder 20 is provided with a bottomvalve plate set 130, and the bottom valve plate set 130 ensures that the pressure chamber is opened under a sufficient pressure state;
a pistonvalve plate group 120 is sleeved at the inner end of thepiston 70, asecond bypass hole 63 is formed in the upper portion, corresponding to the inner cavity of thepiston 70, of theshaft rod 60, hydraulic oil enters the inner cavity of theshaft rod 60 through thesecond bypass hole 63 after the pistonvalve plate group 120 is subjected to pressure and a channel is opened, and the front end of the upperhydraulic valve core 110 locks an inlet and outlet channel of thesecond bypass hole 63 in a stressed state;
adust cover 140 is arranged on the periphery of thefirst fixing sleeve 40, and thedust cover 140 is used for dust prevention;
both thefirst fixing sleeve 40 and thesecond fixing sleeve 50 are provided withjoint bearings 150;
the lower part ofpressure storage chamber 90 is used for storing hydraulic oil and isoil storage chamber 91, upper portion is used for storing high-pressure nitrogen and isgas storage chamber 92, is provided with on the inner wall ofuide bushing 80 and annotates liquidgas injection hole 81, annotates liquidgas injection hole 81 and communicates topressure storage chamber 90 in, be used for annotating liquid gas injection and overflow operation, annotates liquidgas injection hole 81 and is provided withsealing member 82 corresponding to the peripheral position ofaxostylus axostyle 60, ensures that the sealing connection of axostylus axostyle and uide bushing is reliable stable.
In specific implementation, the spool structures of the upperhydraulic spool 100 and the lowerhydraulic spool 110 plug the step holes at corresponding positions through the conical surfaces to achieve a complete sealing effect.
In specific implementation, the pistonvalve plate set 120 is a double-valve-plate piston structure, and has a double-layer tensiledamping valve plate 121 at the lower end and a double-layer compressiondamping valve plate 122 at the upper end.
In the figure 71, a wear pad is shown;
in the figure 42 is a cushion rubber pad.
When the piston acts in a stretching or compressing mode, the valve plates on the outer layers can be opened firstly by hydraulic oil, the hydraulic oil flows through one group of valve plates, the other group of valve plates is opened, then the oil enters the upper portion or the lower portion, thedamping valve plates damping valve plates 122 in the compressing direction are matched with the bottomvalve plate group 130 to perform compression damping adjustment.
The working principle is as follows: the hydraulic oil flow diagram when the piston stretches and compresses after the upper hydraulic valve core is closed is shown in figure 2: injecting hydraulic oil with certain pressure into the channel A to push the upper hydraulic valve core, wherein the channel B is closed by the hydraulic valve core at first, and at the moment, a part of hydraulic oil passes through a fit clearance between the valve core and the inner wall of the shaft rod, the pressure of the part of hydraulic oil is reduced, and at the moment, the reduced trace amount of hydraulic oil continues to move forwards and reaches the sealing point C to be stopped; this is because this part of the hydraulic oil of a slight pressure is not enough to open the upper hydraulic spool pressed by the hydraulic oil of the high pressure of the a point. Similar principle, the hydraulic oil of D passageway opens behind the compression valve block during compression, through E passageway, E passageway is closed by hydraulic valve core, and the trace hydraulic oil after stepping down continues to advance this moment, arrives C sealing point department and stops.
The hydraulic oil flow diagram when the piston stretches and compresses after the upper hydraulic valve core is opened is shown in figure 3: after the pressure of the hydraulic oil is released from the channel A, the hydraulic valve core is rebounded to the initial position by the return spring, the channel B is opened, the sealing point C is opened, and the loop at the piston inside the shock absorber is opened. During stretching, hydraulic oil on the upper portion of the piston flows to the position C through the channel B and then flows to the position E, then moves forwards, opens the stretching force valve plate group, and then flows into the cavity D below the piston. During compression, hydraulic oil D at the lower part of the piston passes through the piston channel to open the compression force valve plate group, then flows to the channel E and then flows to the channel C, and then moves forwards to pass through the channel B and flow into a cavity above the piston.
The hydraulic oil flow diagram when the piston compresses after the lower valve core is closed is shown in the figures 4 and 5: after hydraulic oil with certain pressure is injected into the lower hydraulic locking pipe joint, the lower hydraulic valve core is pushed, and the channel D is closed by the lower hydraulic valve core firstly. When the piston is compressed, hydraulic oil at the position A is extruded and flows into the channel B, the compression force valve plate group (namely the bottom valve group) is opened, then the hydraulic oil flows into the channel C, the hydraulic oil continuously flows forwards to the channel D, the channel D is blocked by the valve core at the moment, but a part of hydraulic oil still passes through a matching gap between the valve core and the inner wall of the inner hole of the lower fixed sleeve, the pressure of the part of hydraulic oil can be reduced, the reduced-pressure trace hydraulic oil continuously moves forwards at the moment and reaches the conical sealing surface at the sealing point E to be stopped, and the lower hydraulic valve core pressed by the high-pressure hydraulic oil cannot be opened due to the hydraulic oil with the trace pressure.
The hydraulic oil flow diagram when the piston compresses after the lower valve core is opened is shown in the figures 6 and 7: after the lower hydraulic locking pipe joint releases certain pressure hydraulic oil, the reset spring rebounds the hydraulic valve core and returns to the initial opening position. When the piston compresses, the hydraulic oil at the position A is extruded and flows into the channel B, the compression force valve plate group (namely the bottom valve group) is opened, then flows into the channel C and then flows into the channel D, and then flows into the oil storage chamber between the inner cylinder and the outer cylinder through the oil way.
The working principle is as follows: when the shock absorber is not needed to play a shock absorption effect, the shaft rod does not need stretching and compressing actions; the external hydraulic device injects hydraulic oil with certain pressure through the upper hydraulic locking interface and the lower hydraulic locking interface, the hydraulic oil with certain pressure can push the hydraulic valve core, so that the hydraulic valve core seals an oil path of an internal side hole of the shock absorber firstly, when the hydraulic valve core moves forwards continuously, the valve core of the hydraulic valve core is blocked in the oil path to play a complete sealing role, the hydraulic oil in the shock absorber cannot pass through the internal oil path at the moment, the hydraulic oil cannot flow at the moment, the shock absorber loses the shock absorption effect, and the rigid support effect is provided; when the shock absorber is required to exert a shock absorption effect, the pressure of hydraulic oil which is injected at a certain pressure is released through an external device, the hydraulic valve core is rebounded to an initial point by the reset spring, the hydraulic oil in the shock absorber can be communicated through an oil way and circulates in the shock absorber to provide a compression damping force or a stretching damping force, and the shock absorption effect is realized; it locks two directions when the bumper shock absorber need not be tensile, and then makes the bumper shock absorber lose the shock attenuation effect temporarily, ensures special type vehicle's demand.
The beneficial effects are as follows: the shock absorber has the two-way locking function, and the shock absorber piston valve piece group has the combination of two group valve blocks, and the director has sealed and pressure release effect, extension shock absorber life. The double-layer valve plate type piston enables the damping change range to be wider, and the bidirectional locking function has the function of providing rigid support for the vehicle according to actual conditions.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A shock absorber with a two-way latch, comprising:
an outer cylinder;
an inner cylinder;
an end cap;
a first fixing sleeve;
a second fixing sleeve;
a shaft lever;
a piston;
and a guide sleeve;
the inner cylinder is arranged in the inner cavity of the outer cylinder, and a pressure storage cavity is formed between the periphery of the inner cylinder and the inner annular wall of the outer cylinder; the end cover is fixedly sleeved at one end of the outer cylinder and one end of the inner cylinder body in the length direction, and the guide sleeve is fixedly sleeved at the other end of the outer cylinder and the other end of the inner cylinder body in the length direction;
the inner end of the shaft rod penetrates through the center hole of the guide sleeve and then is connected with the piston, the piston divides the cavity of the inner cylinder into an upper cavity and a lower cavity, the upper cavity is arranged close to the guide sleeve, and the lower cavity is arranged close to the end cover;
the outer end of the shaft lever protrudes out of the guide sleeve and is fixedly connected with a first fixing sleeve;
a first flow channel communicated with the lower cavity and a second flow channel communicated with the pressure storage cavity are arranged in the end cover, the first flow channel and the second flow channel are communicated to a confluence cavity through corresponding confluence pipelines, a lower hydraulic valve core is axially inserted into the confluence cavity, a first return spring is integrated with the lower hydraulic valve core, a second fixing sleeve is mounted on an exposed end cover of the end cover, a lower hydraulic locking pipe joint is arranged on the periphery of the second fixing sleeve, a hydraulic flow cavity corresponding to the movable end of the lower hydraulic valve core is arranged on the second fixing sleeve, the lower hydraulic locking pipe joint is communicated with the hydraulic flow cavity, and the valve core end of the lower hydraulic valve core blocks the confluence pipeline communicated with the confluence cavity to the first flow channel and the second flow channel in a pressure state;
the hydraulic locking device comprises a shaft rod, a piston, a first fixed sleeve and a second fixed sleeve, wherein the shaft rod is a hollow rod, a bypass hole is formed in the position, close to the piston, of the inner end of the shaft rod, an upper hydraulic valve core is arranged in an inner end cavity of the shaft rod, a second return spring is sleeved at the lower end of the upper hydraulic valve core, a piston valve sheet group is sleeved at the center of the piston, the piston valve sheet group enters and exits the inner cavity of the shaft rod through hydraulic oil in a stressed state, the bypass hole is blocked by the upper hydraulic valve core in an upper end stressed state, an upper hydraulic locking pipe joint is arranged on the periphery of the first fixed sleeve, and the upper hydraulic locking pipe joint is communicated with an upper end hollow oil cavity of the shaft rod.
2. A shock absorber with a bi-directional blocking device as claimed in claim 1, wherein: and a bottom valve plate group is arranged at the bottom of the inner cylinder.
3. A shock absorber with a bi-directional blocking device as claimed in claim 1, wherein: the inner end of the piston is sleeved with the piston valve plate group, the upper portion of the shaft rod, corresponding to the inner cavity of the piston, is provided with a second bypass hole, the piston valve plate group enters the inner cavity of the shaft rod through the second bypass hole after receiving the opening of the pressure channel, and the front end of the upper hydraulic valve core locks an inlet and outlet channel of the second bypass hole under the stress state.
4. A shock absorber with a bi-directional blocking device as claimed in claim 1, wherein: the periphery of the first fixing sleeve is provided with a dust cover.
5. A shock absorber with a bi-directional blocking device as claimed in claim 1, wherein: and joint bearings are arranged on the first fixing sleeve and the second fixing sleeve.
6. A shock absorber with a bi-directional blocking device as claimed in claim 1, wherein: the lower part of pressure accumulation chamber is used for storing hydraulic oil, upper portion is used for storing high pressure nitrogen gas, be provided with on the inner wall of uide bushing and annotate the liquid gas injection hole, it communicates to annotate the liquid gas injection hole intercommunication to in the pressure accumulation chamber, be used for annotating liquid gas injection and overflow operation.
7. A shock absorber with a bi-directional blocking device as claimed in claim 1, wherein: the valve core structures of the upper hydraulic valve core and the lower hydraulic valve core block the step holes at the corresponding positions through the conical surfaces to play a complete sealing role.
8. A shock absorber with a bi-directional blocking device as claimed in claim 3, wherein: the piston valve plate group is of a double-group valve plate type piston structure, double layers of tensile damping valve plates are arranged at the lower end of the piston valve plate group, and double layers of compression damping valve plates are arranged at the upper end of the piston valve plate group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111643507.5ACN114110074A (en) | 2021-12-29 | 2021-12-29 | A shock absorber with two-way locking device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111643507.5ACN114110074A (en) | 2021-12-29 | 2021-12-29 | A shock absorber with two-way locking device |
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| Publication Number | Publication Date |
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| CN114110074Atrue CN114110074A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111643507.5APendingCN114110074A (en) | 2021-12-29 | 2021-12-29 | A shock absorber with two-way locking device |
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| Country | Link |
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| CN (1) | CN114110074A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325084A (en)* | 2022-09-17 | 2022-11-11 | 山东协力智能科技有限公司 | Built-in runner type locking damper |
| CN115325085A (en)* | 2022-09-17 | 2022-11-11 | 山东协力智能科技有限公司 | Spring compensation type locking damper |
| CN119289021A (en)* | 2024-11-19 | 2025-01-10 | 广州澳森液压元件有限公司 | Oil-gas hybrid shock absorber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2861612Y (en)* | 2005-12-22 | 2007-01-24 | 淄博佳能石化机械有限公司 | Hydraulic damper |
| CN104373496A (en)* | 2014-10-11 | 2015-02-25 | 宁波凯瑞汽车零部件有限公司 | Bidirectional adjustable shock absorber |
| CN105736623A (en)* | 2016-04-26 | 2016-07-06 | 长春孔辉汽车科技股份有限公司 | Pressure-controlled adjustable damping vibration absorber |
| CN206000928U (en)* | 2016-09-13 | 2017-03-08 | 常熟理工学院 | Proportional electromagnet type automobile absorber |
| KR20200113808A (en)* | 2019-03-26 | 2020-10-07 | 주식회사 만도 | Damping force controlling shock absorber |
| CN218510063U (en)* | 2021-12-29 | 2023-02-21 | 苏州西捷克缓冲科技有限公司 | Shock absorber with bidirectional locking device |
- 2021
- 2021-12-29CNCN202111643507.5Apatent/CN114110074A/enactivePending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2861612Y (en)* | 2005-12-22 | 2007-01-24 | 淄博佳能石化机械有限公司 | Hydraulic damper |
| CN104373496A (en)* | 2014-10-11 | 2015-02-25 | 宁波凯瑞汽车零部件有限公司 | Bidirectional adjustable shock absorber |
| CN105736623A (en)* | 2016-04-26 | 2016-07-06 | 长春孔辉汽车科技股份有限公司 | Pressure-controlled adjustable damping vibration absorber |
| CN206000928U (en)* | 2016-09-13 | 2017-03-08 | 常熟理工学院 | Proportional electromagnet type automobile absorber |
| KR20200113808A (en)* | 2019-03-26 | 2020-10-07 | 주식회사 만도 | Damping force controlling shock absorber |
| CN218510063U (en)* | 2021-12-29 | 2023-02-21 | 苏州西捷克缓冲科技有限公司 | Shock absorber with bidirectional locking device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325084A (en)* | 2022-09-17 | 2022-11-11 | 山东协力智能科技有限公司 | Built-in runner type locking damper |
| CN115325085A (en)* | 2022-09-17 | 2022-11-11 | 山东协力智能科技有限公司 | Spring compensation type locking damper |
| CN119289021A (en)* | 2024-11-19 | 2025-01-10 | 广州澳森液压元件有限公司 | Oil-gas hybrid shock absorber |
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