CN103758910B - Pump-type floating piston damper - Google Patents
Pump-type floating piston damper Download PDFInfo
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- CN103758910B CN103758910B CN201410022654.4A CN201410022654A CN103758910B CN 103758910 B CN103758910 B CN 103758910B CN 201410022654 A CN201410022654 A CN 201410022654A CN 103758910 B CN103758910 B CN 103758910B
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Abstract
The invention discloses a pump-type floating piston damper comprising a guide sleeve and seal assembly, an operating cylinder, a piston rod, a piston, an energy accumulator, an oil chamber and a bottom valve. The piston comprises an upper cavity and a lower cavity. The piston rod comprises a hollow cavity and a sliding changeover passage used to change passages from the upper and lower cavities to the hollow cavities; specifically, in a compression travel, the lower cavity is in oil communication with the hollow cavity; in a return travel, the upper cavity is in oil communication with the hollow cavity. A lower end opening of the hollow cavity of the piston rod is closed, and an upper end opening of the piston rod is in oil communication with the oil chamber through a piston rod return oil pipe. The oil chamber is in one-way oil communication with the upper cavity through an upper cavity oil supplement one-way valve and a lower cavity oil supplement pipe. The oil chamber is in one-way oil communication with the lower cavity through a lower cavity oil supplement one-way valve mounted on the bottom valve. Oil flows constantly in a single direction and always flows by an external pipeline, so that radiating effect is significantly improved; the pump-type floating piston damper can arranged in multiple structural layout forms to adapt to vehicles at different application places.
Description
Technical field
The invention belongs to liquid-springing technical field, be specifically related to a kind of fluid one-way flow, can improve the pump type floating piston vibration damper of vibration damper heat dispersion.
Background technique
Hydraulic damping vibration damper is the important component part of automobile chassis, plays an important role in isolation and decay suspension vibration.Current vehicle being applied maximum is Hydraulic shock absorber, and the basic principle that its damping produces is orifice restriction effect.When automobile travels on uneven road surface, automobile vibration kinetic transformation is the heat energy of vibration damper fluid by the damping function of vibration damper, is then lost in surrounding environment by each cylinder body.The generation of heat can cause the change of vibration damper operating temperature, and when especially running at high speed on bad road surface, shock absorber oil liquid temp will sharply rise.
Tradition vibration damper is in compression stroke and restore in stroke, fluid is reciprocally concentrated by piston valve and bottom valve, fluid flowing, oil liquid temperature is caused to rise, and oil liquid temperature rising will cause following harm: (1) causes the change of oil viscosity, affect the damping characteristic of vibration damper, and then affect the isolation characteristics of suspension system; (2) accelerate the aging of seal element, cause Sealing premature failure, cause the leakage of oil of vibration damper high temperature, gas leak phenomenon; (3) easily cause the cavitation effect of fluid, cause vibration-damper characterist to distort and extraordinary noise; (4) indirectly, due to the change of the vibration damper external characteristics that temperature rise causes, car load maneuverability and smoothness will be affected.The temperature rise phenomenon of visible dydraulic shock absorber limits it to use and one of the major issue that develops.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of fluid one-way flow, the pump type floating piston vibration damper of vibration damper heat dispersion can be improved.
For solving the problems of the technologies described above adopted technological scheme be:
A kind of pump type floating piston vibration damper, comprise guide sleeve and sealing 1, clutch release slave cylinder 2, piston rod 3, piston 4, accumulator 5, accumulator 6 and bottom valve 7, piston 4 is connected with piston rod 3 lower end, slide along clutch release slave cylinder 2 inwall, clutch release slave cylinder 2 is stretched out in piston rod 3 upper end, guide sleeve and sealing 1 pair of clutch release slave cylinder 2 upper end and piston rod 3 seal and lead, bottom valve 7 is arranged between clutch release slave cylinder 2 lower end and accumulator 7, accumulator 5 outlet is communicated with accumulator 7 fluid, and piston about 4 forms epicoele A and cavity of resorption B respectively; Described piston rod 3 has hollow cavity C, and piston 4 has slide handover passage, switches the path of epicoele A, cavity of resorption B and hollow cavity C, and when being specially compression stroke, cavity of resorption B is communicated with hollow cavity C fluid, and when restoring stroke, epicoele A is communicated with hollow cavity C fluid;
The hollow cavity C lower end exit seal of piston rod 3, upper end outlet is communicated with accumulator 6 fluid by piston rod return tube 11, and accumulator 6 is by epicoele repairing one-way valve 9, epicoele repairing pipe 10 and epicoele A fluid unilaterally connected;
Accumulator 6 passes through cavity of resorption repairing one-way valve 8 and the cavity of resorption B fluid unilaterally connected of installation or processing on bottom valve 7.
Preferably, the slide handover passage of described piston 4 comprises upper chamber passage 41, cavity of resorption passage 42, sliding support 43 and guiding valve 44, wherein guiding valve 44 and sliding support 43 are slidably connected, and switch upper chamber passage 41, fluid path between cavity of resorption passage 42 and hollow cavity inlet channel 31; Guiding valve limiting stopper 45 is fixed with respectively on the upside of upper chamber passage 41 He on the downside of cavity of resorption passage 42.
Alternatively, described guiding valve 44 is rubber seal or flip sleeve.
Preferably, described piston 4 entirety is as guiding valve 44, now upper chamber passage 41, cavity of resorption passage 42 are upper and lower two hollow cavity inlet channeles, sliding support 43 is the piston rod of part between two hollow cavity inlet channeles 31, piston 4 entirety is slided along this partial piston bar 3 outer surface, switches upper chamber passage 41, fluid path between cavity of resorption passage 42 and hollow cavity C.
Alternatively, described accumulator 5 is substituted by the airtight air bag 51 be placed in below accumulator 6, inflatable bladders 52 or floating piston gas storage chamber 53.
Preferably, described epicoele repairing pipe 10 is water conservancy diversion cylinder barrel 101, accumulator 6 is made up of oil storage cylinder barrel 61, wherein, water conservancy diversion cylinder barrel 101 upper end is sealed by guide sleeve and sealing 1 and is communicated with piston rod return tube 11 fluid, water conservancy diversion cylinder barrel 101 lower ending opening is communicated with oil storage cylinder barrel 61 fluid, and oil storage cylinder barrel 61 upper inner, water conservancy diversion cylinder barrel 101 outer surface upper end and guide sleeve and sealing 1 form gas storage chamber 53, and gas storage chamber 53 is equal to accumulator 5.
Preferably, described epicoele repairing pipe 10 and accumulator 6 are made up of oil storage water conservancy diversion cylinder barrel 102, oil storage water conservancy diversion cylinder barrel 102 upper end is by guide sleeve and sealing 1 sealing, and be communicated with the unidirectional fluid of epicoele A by epicoele repairing one-way valve 9, oil storage water conservancy diversion cylinder barrel 102 lower end seals, and be communicated with the unidirectional fluid of cavity of resorption B by cavity of resorption repairing one-way valve 8, be furnished with airtight air bag 51 or inflatable bladders 52 bottom oil storage water conservancy diversion cylinder barrel 102, hollow cavity C upper end outlet is communicated with oil storage water conservancy diversion cylinder barrel 102 fluid by piston rod return tube 11.
Preferably, described piston rod return tube 11 is helical hose 111, and helical hose 111 upper end is communicated with hollow cavity C upper end outlet fluid, and spirals downwards around piston rod 3, and helical hose 111 lower end is communicated with accumulator 6 fluid.
Cavity of resorption repairing one-way valve 8 described in the application is different with the cracking pressure of epicoele repairing one-way valve 9, produces the repairing resistance of different size.Described upper chamber passage 41 and cavity of resorption passage 42 are damping hole, and produce damping function to flowing through fluid, the pore size of upper chamber passage 41 and cavity of resorption passage 42 and the various combination of quantity, produce the damping force of different size.
Working principle of the present invention is as follows:
First the working principle of the slide handover passage of piston 4 is introduced, as shown in Figure 6 (a), when piston 4 is in compression stroke, guiding valve 44 is subject to clutch release slave cylinder 2 frictional force upwards and the effect of cavity of resorption B oil liquid pressure, along sliding support 43 upward sliding, close upper chamber passage 41, open cavity of resorption passage 42, thus the fluid in cavity of resorption B enters hollow cavity C by cavity of resorption passage 42, hollow cavity inlet channel 31;
As shown in Figure 6 (b), when piston 4 is in recovery stroke, guiding valve 44 is subject to the downward frictional force of clutch release slave cylinder 2 and the effect of epicoele A oil liquid pressure, along sliding support 43 slide downward, close cavity of resorption passage 42, open upper chamber passage 41, thus the fluid in epicoele A enters hollow cavity C by upper chamber passage 41, hollow cavity inlet channel 31;
No matter compression stroke or restore stroke, the fluid flowing into hollow cavity C all flows out from hollow cavity C upper end outlet, enters accumulator 6 by piston rod return tube 11, difference is: during compression stroke, cavity of resorption repairing one-way valve 8 is closed, and epicoele repairing one-way valve 9 is opened, and carries out repairing to epicoele A; When restoring stroke, epicoele repairing one-way valve 9 is closed, and cavity of resorption repairing one-way valve 8 is opened, and carries out repairing to cavity of resorption B.
The beneficial effect of the application is:
Owing to have employed unique movement with slide handover passage, vibration damper fluid is made to be one-way flow all the time, be similar to the pump oil process of oil hydraulic pump, therefore be called " pump type floating piston vibration damper ", the one-way flow of fluid, and fluid always flows through exterior line, the damper structure radiating effect of the application is significantly improved;
The damping hole of the compression in the application and recovery stroke and valve architecture dispersed placement, be easier to design and the coupling of carrying out different compressive forcees and recuperability, and then obtain desirable damping behavior;
By different movement, accumulator form, external oil pipe setting type etc., the various structures setting type of vibration damper can be realized, be adapted to the vehicle of different application occasion.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment of the application;
Fig. 2 is two kinds of embodiments of piston;
In Fig. 2 (a), piston is switched for being realized oil circuit by guiding valve;
In Fig. 2 (b), piston is that whole slide switches oil circuit;
Fig. 3 is three kinds of replacement forms of accumulator;
Airtight air bag is used in Fig. 3 (a);
Inflatable bladders is used in Fig. 3 (b);
Floating piston gas storage chamber is used in Fig. 3 (c);
Fig. 4 is second embodiment of the application;
Fig. 5 is the 3rd embodiment of the application;
Fig. 6 is the working principle of the slide handover passage of piston in the application;
Fig. 6 (a) is compression stroke; Fig. 6 (b) is for restoring stroke.
In figure:
1, guide sleeve and sealing; 2, clutch release slave cylinder; 3, piston rod; 4, piston; 5, accumulator; 6, accumulator;
7, bottom valve; 8, cavity of resorption repairing one-way valve; 9, epicoele repairing one-way valve; 10, epicoele repairing pipe;
11, piston rod return tube; A, epicoele; B, cavity of resorption; C, hollow cavity;
31, hollow cavity inlet channel; 41, upper chamber passage; 42, cavity of resorption passage; 43, sliding support;
44, guiding valve; 45, guiding valve limiting stopper; 51, airtight air bag; 52, inflatable bladders; 53, floating piston gas storage chamber;
53, gas storage chamber; 61, oil storage cylinder barrel; 111, helical hose; 101, water conservancy diversion cylinder barrel; 102, oil storage water conservancy diversion cylinder barrel.
Embodiment
Below in conjunction with accompanying drawing, the application is described in detail.
Fig. 1 is a kind of embodiment of the pump type floating piston vibration damper of the application, comprise guide sleeve and sealing 1, clutch release slave cylinder 2, piston rod 3, piston 4, accumulator 5, accumulator 6 and bottom valve 7, piston 4 is connected with piston rod 3 lower end, slide along clutch release slave cylinder 2 inwall, clutch release slave cylinder 2 is stretched out in piston rod 3 upper end, guide sleeve and sealing 1 pair of clutch release slave cylinder 2 upper end and piston rod 3 seal and lead, bottom valve 7 is arranged between clutch release slave cylinder 2 lower end and accumulator 7, accumulator 5 outlet is communicated with accumulator 7 fluid, and piston about 4 forms epicoele A and cavity of resorption B respectively; Suitable piston rod 3 has hollow cavity C, and piston 4 has slide handover passage, switches the path of epicoele A, cavity of resorption B and hollow cavity C, and when being specially compression stroke, cavity of resorption B is communicated with hollow cavity C fluid, and when restoring stroke, epicoele A is communicated with hollow cavity C fluid;
The hollow cavity C lower end exit seal of piston rod 3, upper end outlet is communicated with accumulator 6 fluid by piston rod return tube 11, and accumulator 6 is by epicoele repairing one-way valve 9, epicoele repairing pipe 10 and epicoele A fluid unilaterally connected;
Accumulator 6 passes through cavity of resorption repairing one-way valve 8 and the cavity of resorption B fluid unilaterally connected of installation or processing on bottom valve 7.
Fig. 2 is two kinds of embodiments of piston;
In Fig. 2 (a), piston is switched for being realized oil circuit by guiding valve, described guiding valve 44 can be rubber seal or flip sleeve, the slide handover passage of described piston 4 comprises upper chamber passage 41, cavity of resorption passage 42, sliding support 43 and guiding valve 44, wherein guiding valve 44 and sliding support 43 are slidably connected, and switch upper chamber passage 41, fluid path between cavity of resorption passage 42 and hollow cavity inlet channel 31; Guiding valve limiting stopper 45 is fixed with respectively on the upside of upper chamber passage 41 He on the downside of cavity of resorption passage 42.
In Fig. 2 (b), piston is that whole slide switches oil circuit; Described piston 4 entirety is as guiding valve 44, now upper chamber passage 41, cavity of resorption passage 42 are upper and lower two hollow cavity inlet channeles, sliding support 43 is the piston rod of part between two hollow cavity inlet channeles 31, piston 4 entirety is slided along this partial piston bar 3 outer surface, switches upper chamber passage 41, fluid path between cavity of resorption passage 42 and hollow cavity C.
Fig. 3 is three kinds of replacement forms of accumulator, and namely described accumulator 5 is substituted by the airtight air bag 51 be placed in below accumulator 6, inflatable bladders 52 or floating piston gas storage chamber 53.
Fig. 4 is second embodiment of the application; Described epicoele repairing pipe 10 is water conservancy diversion cylinder barrel 101, accumulator 6 is made up of oil storage cylinder barrel 61, wherein, water conservancy diversion cylinder barrel 101 upper end is sealed by guide sleeve and sealing 1 and is communicated with piston rod return tube 11 fluid, water conservancy diversion cylinder barrel 101 lower ending opening is communicated with oil storage cylinder barrel 61 fluid, oil storage cylinder barrel 61 upper inner, water conservancy diversion cylinder barrel 101 outer surface upper end and guide sleeve and sealing 1 form gas storage chamber 53, and gas storage chamber 53 is equal to accumulator 5.
Fig. 5 is the 3rd embodiment of the application; Described epicoele repairing pipe 10 and accumulator 6 are made up of oil storage water conservancy diversion cylinder barrel 102, oil storage water conservancy diversion cylinder barrel 102 upper end is by guide sleeve and sealing 1 sealing, and be communicated with the unidirectional fluid of epicoele A by epicoele repairing one-way valve 9, oil storage water conservancy diversion cylinder barrel 102 lower end seals, and be communicated with the unidirectional fluid of cavity of resorption B by cavity of resorption repairing one-way valve 8, be furnished with airtight air bag 51 or inflatable bladders 52 bottom oil storage water conservancy diversion cylinder barrel 102, hollow cavity C upper end outlet is communicated with oil storage water conservancy diversion cylinder barrel 102 fluid by piston rod return tube 11.
Preferably, described piston rod return tube 11 is helical hose 111, and as described in Figure 4, helical hose 111 upper end is communicated with hollow cavity C upper end outlet fluid, and spirals downwards around piston rod 3, and helical hose 111 lower end is communicated with accumulator 6 fluid.
Cavity of resorption repairing one-way valve 8 described in the application is different with the cracking pressure of epicoele repairing one-way valve 9, produces the repairing resistance of different size.Described upper chamber passage 41 and cavity of resorption passage 42 are damping hole, and produce damping function to flowing through fluid, the pore size of upper chamber passage 41 and cavity of resorption passage 42 and the various combination of quantity, produce the damping force of different size.
Below in conjunction with Fig. 6, the working principle of the application is introduced:
First the working principle of the slide handover passage of piston 4 is introduced, as shown in Figure 6 (a), when piston 4 is in compression stroke, guiding valve 44 is subject to clutch release slave cylinder 2 frictional force upwards and the effect of cavity of resorption B oil liquid pressure, along sliding support 43 upward sliding, close upper chamber passage 41, open cavity of resorption passage 42, thus the fluid in cavity of resorption B enters hollow cavity C by cavity of resorption passage 42, hollow cavity inlet channel 31;
As shown in Figure 6 (b), when piston 4 is in recovery stroke, guiding valve 44 is subject to the downward frictional force of clutch release slave cylinder 2 and the effect of epicoele A oil liquid pressure, along sliding support 43 slide downward, close cavity of resorption passage 42, open upper chamber passage 41, thus the fluid in epicoele A enters hollow cavity C by upper chamber passage 41, hollow cavity inlet channel 31;
No matter compression stroke or restore stroke, the fluid flowing into hollow cavity C all flows out from hollow cavity C upper end outlet, enters accumulator 6 by piston rod return tube 11, difference is: during compression stroke, cavity of resorption repairing one-way valve 8 is closed, and epicoele repairing one-way valve 9 is opened, and carries out repairing to epicoele A; When restoring stroke, epicoele repairing one-way valve 9 is closed, and cavity of resorption repairing one-way valve 8 is opened, and carries out repairing to cavity of resorption B.
Claims (9)
1. a pump type floating piston vibration damper, comprise guide sleeve and sealing (1), clutch release slave cylinder (2), piston rod (3), piston (4), accumulator (5), accumulator (6) and bottom valve (7), piston (4) is connected with piston rod (3) lower end, slide along clutch release slave cylinder (2) inwall, clutch release slave cylinder (2) is stretched out in piston rod (3) upper end, guide sleeve and sealing (1) seal clutch release slave cylinder (2) upper end and piston rod (3) and lead, bottom valve (7) is arranged between clutch release slave cylinder (2) lower end and accumulator (7), accumulator (5) outlet is communicated with accumulator (7) fluid, piston (4) forms epicoele (A) and cavity of resorption (B) up and down respectively, it is characterized in that:
Described piston rod (3) has hollow cavity (C), piston (4) has slide handover passage, epicoele (A), cavity of resorption (B) are switched with the path of hollow cavity (C), when being specially compression stroke, cavity of resorption (B) is communicated with hollow cavity (C) fluid, and when restoring stroke, epicoele (A) is communicated with hollow cavity (C) fluid;
Hollow cavity (C) the lower end exit seal of piston rod (3), upper end outlet is communicated with accumulator (6) fluid by piston rod return tube (11), and accumulator (6) is by epicoele repairing one-way valve (9), epicoele repairing pipe (10) and epicoele (A) fluid unilaterally connected;
Described accumulator (6) is by the upper cavity of resorption repairing one-way valve (8) installed or process of bottom valve (7) and cavity of resorption (B) fluid unilaterally connected.
2. a kind of pump type floating piston vibration damper according to claim 1, is characterized in that:
The slide handover passage of described piston (4) comprises upper chamber passage (41), cavity of resorption passage (42), sliding support (43) and guiding valve (44), wherein guiding valve (44) and sliding support (43) are slidably connected, and switch upper chamber passage (41), fluid path between cavity of resorption passage (42) and hollow cavity inlet channel (31); Upper chamber passage (41) upside and cavity of resorption passage (42) downside are fixed with guiding valve limiting stopper (45) respectively.
3. a kind of pump type floating piston vibration damper according to claim 2, is characterized in that:
Described guiding valve (44) is rubber seal or flip sleeve.
4. a kind of pump type floating piston vibration damper according to claim 2, is characterized in that:
Described piston (4) is overall as guiding valve (44), now upper chamber passage (41), cavity of resorption passage (42) are upper and lower two hollow cavity inlet channeles, sliding support (43) is the piston rod of part between two hollow cavity inlet channeles (31), piston (4) is overall to slide along this partial piston bar (3) outer surface, switches upper chamber passage (41), fluid path between cavity of resorption passage (42) and hollow cavity (C).
5. pump type floating piston vibration damper according to any one of claim 1 to 4, is characterized in that:
Described accumulator (5) is substituted by the airtight air bag (51) be placed in below accumulator (6), inflatable bladders (52) or floating piston gas storage chamber (53).
6. pump type floating piston vibration damper according to any one of claim 1 to 4, is characterized in that:
Described epicoele repairing pipe (10) is water conservancy diversion cylinder barrel (101), accumulator (6) is made up of oil storage cylinder barrel (61), wherein, water conservancy diversion cylinder barrel (101) upper end is sealed by guide sleeve and sealing (1) and is communicated with piston rod return tube (11) fluid, water conservancy diversion cylinder barrel (101) lower ending opening is communicated with oil storage cylinder barrel (61) fluid, oil storage cylinder barrel (61) upper inner, water conservancy diversion cylinder barrel (101) outer surface upper end and guide sleeve and sealing (1) form gas storage chamber (53), gas storage chamber (53) is equal to accumulator (5).
7. pump type floating piston vibration damper according to any one of claim 1 to 4, is characterized in that:
Described epicoele repairing pipe (10) and accumulator (6) are made up of oil storage water conservancy diversion cylinder barrel (102), oil storage water conservancy diversion cylinder barrel (102) upper end is sealed by guide sleeve and sealing (1), and be communicated with epicoele (A) unidirectional fluid by epicoele repairing one-way valve (9), oil storage water conservancy diversion cylinder barrel (102) lower end seals, and be communicated with cavity of resorption (B) unidirectional fluid by cavity of resorption repairing one-way valve (8), oil storage water conservancy diversion cylinder barrel (102) bottom is furnished with airtight air bag (51) or inflatable bladders (52), hollow cavity (C) upper end outlet is communicated with oil storage water conservancy diversion cylinder barrel (102) fluid by piston rod return tube (11).
8. pump type floating piston vibration damper according to claim 1, is characterized in that:
Described cavity of resorption repairing one-way valve (8) is different with the cracking pressure of epicoele repairing one-way valve (9), produces the repairing resistance of different size.
9. pump type floating piston vibration damper according to claim 2, is characterized in that:
Described upper chamber passage (41) and cavity of resorption passage (42) are damping hole, damping function is produced to flowing through fluid, the pore size of upper chamber passage (41) and cavity of resorption passage (42) and the various combination of quantity, produce the damping force of different size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022654.4A CN103758910B (en) | 2014-01-19 | 2014-01-19 | Pump-type floating piston damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022654.4A CN103758910B (en) | 2014-01-19 | 2014-01-19 | Pump-type floating piston damper |
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| Publication Number | Publication Date |
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| CN103758910A CN103758910A (en) | 2014-04-30 |
| CN103758910B true CN103758910B (en) | 2015-07-08 |
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| CN201410022654.4A Active CN103758910B (en) | 2014-01-19 | 2014-01-19 | Pump-type floating piston damper |
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| CN104596856B (en) * | 2015-01-16 | 2017-01-25 | 重庆大学 | Uniaxial tension compression system |
| CN106678484B (en) * | 2016-11-17 | 2020-08-11 | 国家电网公司 | High-energy pipeline impact energy absorber in electric power planning |
| CN108443405B (en) * | 2018-05-04 | 2019-08-16 | 山推工程机械股份有限公司 | A kind of damping shock absorber and bull-dozer |
| CN112682451B (en) * | 2020-12-22 | 2022-08-23 | 东风越野车有限公司 | Damping continuously adjustable hydro-pneumatic spring |
| CN113124086B (en) * | 2021-02-26 | 2022-08-05 | 江苏开沃汽车有限公司 | Multi-cavity shock absorber for energy recovery and working method |
| CN116002032A (en) * | 2023-03-23 | 2023-04-25 | 杭州未名信科科技有限公司 | Shock-resistant shipborne transmission system with anti-corrosion control equipment and method |
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Inventor after: Guo Konghui Inventor after: Zhang Yuxin Inventor after: Zhen Hao Inventor after: Zhan Min Inventor after: Chen Yuxing Inventor before: Guo Konghui Inventor before: Zhang Yuxin Inventor before: Zhan Min Inventor before: Chen Yuxing |
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