CN107642575B - Automobile double-cylinder type shock absorber - Google Patents
Automobile double-cylinder type shock absorber Download PDFInfo
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- CN107642575B CN107642575B CN201711066254.3A CN201711066254A CN107642575B CN 107642575 B CN107642575 B CN 107642575B CN 201711066254 A CN201711066254 A CN 201711066254A CN 107642575 B CN107642575 B CN 107642575B
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- Prior art keywords
- air bag
- piston
- bag spring
- spring
- shock absorber
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- 230000035939 shock Effects 0.000 title claims abstract description 32
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 29
- 238000013016 damping Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Abstract
The invention discloses a high-reliability automobile double-cylinder shock absorber which comprises a working cylinder barrel, a piston rod, a first piston, a guide seat, a buffer cushion, an air bag spring set and a second piston, wherein the first piston and the second piston are arranged on the piston rod in parallel, and the buffer cushion and the air bag spring set are arranged between the guide seat and the second piston. The invention sets an air bag spring group and a simple piston in the traditional double-cylinder shock absorber, and the air bag spring generates reverse elasticity to the second piston through the compression deformation of each air bag spring in the air bag spring group; because a small hole is formed between the air bag spring and the axial through hole of the second piston, oil is throttled through the small hole, so that an additional damping force value is generated; the vibration reduction effect of the vibration absorber is more gentle and effective under the elastic force effect generated by the air bag spring, and the vibration absorber can work more reliably under the condition of generating an additional damping force value, so that the vibration reduction efficiency of the vibration absorber and the smoothness of the automobile running are improved.
Description
Technical Field
The invention relates to a shock absorber, in particular to a high-reliability automobile double-cylinder shock absorber.
Background
The main function of the shock absorber is to restrain the shock of the spring element during rebound after shock absorption and the impact from the road surface. When the frame and the axle vibrate and do relative motion, the piston in the shock absorber reciprocates in the oil, and the oil flows back and forth through the valves, the through holes and the normal through holes under the action of the oil pressure.
However, when an automobile runs under severe running conditions, the oil pressure of the conventional automobile shock absorber increases sharply in the working process, so that parts inside the piston are more damaged. Meanwhile, the damping force required by the shock absorber is not easy to control, and the excessive damping force can influence the comfort of the automobile when the automobile runs on a flat road surface; insufficient damping force can cause mutual collision of internal parts of the shock absorber, so that the automobile violently oscillates, and the shock absorbing effect cannot be achieved.
Chinese patent CN105889393a discloses a "shock absorber and a vehicle having the same", which provides a shock absorber in which a coil spring is installed between a rod guide and a piston, and since the coil spring has a small stiffness, it is easily compressed to a limited state frequently, resulting in weakening or losing of spring elasticity and even permanent deformation. The invention adopts three rubber airtight air bag springs with different internal compressed gas pressure, and the three air bag springs are arranged on the piston rod in parallel, so that the air bag is not easy to compress to a limit state due to the fact that the stiffness of the air bag springs is increased along with the pressure rise of the compressed gas, the shock absorber can achieve better shock absorption effect, and the shock absorber is reliable in work and long in service life.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide the high-reliability automobile double-cylinder type shock absorber which can effectively slow down the trend of rapid increase of oil pressure, and the damping force can be changed along with the change of the running working condition of an automobile, so that the ideal shock absorption effect is achieved, and the running smoothness and the comfort of the automobile are improved.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a car double-cylinder type shock absorber of high reliability, includes working cylinder, piston rod, first piston, guide holder, blotter, gasbag spring package and second piston, first piston with the second piston is parallelly connected to be installed on the piston rod, the blotter with gasbag spring package is all installed between the guide holder with the second piston.
Further, the second piston is provided with axial through holes uniformly distributed along the circumference, the second piston is sleeved on the piston rod and is arranged above the first piston, and the working of the first piston and the working of the second piston are not affected.
Further, the air bag spring group is sleeved on the piston rod and is arranged above the second piston, the air bag spring group is composed of a first air bag spring, a second air bag spring and a third air bag spring, the first air bag spring, the second air bag spring and the third air bag spring are installed in parallel, a buffer cushion is installed on the first air bag spring, and the buffer cushion is installed between the first air bag spring and the second air bag spring and between the second air bag spring and the third air bag spring; the compressed gas pressure in the first air bag spring, the second air bag spring and the third air bag spring is gradually increased from top to bottom, and the size of the air bags is sequentially increased, so that the vibration reduction effect of the vibration damper in the working process is more gentle and effective.
Further, when the deformation of the first air bag spring and the second air bag spring reaches the maximum, the edges of the first air bag spring and the second air bag spring are not contacted with the working cylinder barrel, and when the deformation of the third air bag spring reaches the maximum, the edges of the third air bag spring are not used for completely closing the through holes on the second piston; the inner layer of each air bag spring is made of airtight rubber, and the outer layer is made of oil-resistant rubber.
Compared with the prior art, the invention has the beneficial effects that:
through setting up three atmospheric pressure and the equal different gasbag spring of size between piston and guide holder, when the car was gone under abominable driving condition, because the compression deformation of gasbag spring, gasbag spring produced reverse elasticity to the piston, can slow down the trend that fluid pressure increases sharply, makes the shock attenuation effect of shock absorber in the course of the work more mild effectively to improve the ride comfort that the car was gone.
By installing the second piston between the third air bag spring and the first piston, when the third air bag spring is compressed and deformed in the extension stroke of the shock absorber, the area of the axial through hole on the second piston covered by the third air bag spring is larger and larger along with the increase of the deformation, and the upper cavity oil is throttled by small holes formed by the third air bag spring and the axial through hole of the second piston under the action of pressure, so that an additional damping force value is generated.
Meanwhile, the buffer pads are arranged at the upper ends of the first air bag springs and among the air bag springs, so that the stress of each air bag spring in the compressed process is more uniform, a guiding effect can be achieved, the friction between the air bag springs and the wall of the working cylinder in the working process is reduced, the vibration damper works more reliably, and the service life of the vibration damper is prolonged.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of a second piston of the present invention.
Fig. 3 is a cross-sectional view of the air bag spring of the present invention.
Reference numerals: the device comprises a guide seat 1, a piston rod 2, a working cylinder barrel 3, a buffer cushion 4, a first air bag spring 5, a second air bag spring 6, a third air bag spring 7, a second piston 8, an axial through hole 9, a first piston 10 and an air bag spring group 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention. The drawings are for illustrative purposes only and do not represent actual structures or true proportions of the invention.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of the present invention, a high-reliability dual-cylinder shock absorber for an automobile, which includes a working cylinder 3, a piston rod 2, a first piston 10, a guide seat 1, a cushion pad 4, an air bag spring set 11, and a second piston 8, wherein the first piston 10 and the second piston 8 are installed on the piston rod 2 in parallel, and the cushion pad 4 and the air bag spring set 11 are installed between the guide seat 1 and the second piston 8.
Fig. 2 is a top view of a second piston of the present invention, the second piston 8 is provided with axial through holes 9 uniformly distributed along the circumference, the second piston 8 is sleeved on the piston rod 2 and is disposed above the first piston 10, and the working of the first piston 10 and the working of the second piston 8 are not affected.
Fig. 3 is a cross-sectional view of an air bag spring according to the present invention, the air bag spring set 11 is sleeved on the piston rod 2 and is disposed above the second piston 8, the air bag spring set 11 is composed of a first air bag spring 5, a second air bag spring 6 and a third air bag spring 7, the first air bag spring 5, the second air bag spring 6 and the third air bag spring 7 are installed in parallel, the cushion pad 4 is installed on the first air bag spring 5, and the cushion pad 4 is installed between the first air bag spring 5 and the second air bag spring 6 and between the second air bag spring 6 and the third air bag spring 7; the compressed gas pressure in the first air bag spring 5, the second air bag spring 6 and the third air bag spring 7 increases gradually from top to bottom, and the size of the air bags increases gradually, so that the vibration reduction effect of the vibration damper in the working process is more gentle and effective.
When the deformation of the first air bag spring 5 and the second air bag spring 6 reaches the maximum, the edges of the first air bag spring and the second air bag spring are not contacted with the working cylinder barrel, and when the deformation of the third air bag spring 7 reaches the maximum, the edges of the third air bag spring do not completely seal the through holes on the second piston 8.
The working principle of the embodiment is as follows:
when the shock absorber is stretched, the first piston 10, the second piston 8 and the air bag spring group 11 move upwards along with the piston rod 2, when the cushion pad 4 is contacted with the guide seat 1, the first air bag spring 5 is compressed, the first air bag spring 5, the second air bag spring 6 and the third air bag spring 7 are compressed simultaneously along with the increase of the compressed quantity, and the deformation quantity of the third air bag spring 7 is increased, so that the area of an axial through hole 9 on the second piston 8 covered by the third air bag spring 7 is larger and larger, and the upper cavity oil is throttled by small holes formed by the third air bag spring 7 and the axial through hole 9 of the second piston 8 under the pressure action, so that an additional damping force value is generated; the group of air bag springs 11 together with the small holes formed provide additional damping force for the shock absorber. When the shock absorber is compressed, the air bag spring group 11 in a compressed state has a reverse acting force on the second piston 8, and pushes the piston to move downwards quickly, so that the damping force generated by the shock absorber is smaller, and the elasticity of the elastic element sleeved on the shock absorber is fully utilized to alleviate the impact.
Claims (1)
1. An automobile double-cylinder type shock absorber comprises a working cylinder barrel (3), a piston rod (2), a first piston (10), a guide seat (1), a cushion pad (4), an air bag spring group (11) and a second piston (8); the device is characterized in that the first piston (10) and the second piston (8) are arranged on the piston rod (2) in series, and the cushion pad (4) and the air bag spring group (11) are arranged between the guide seat (1) and the second piston (8);
the second piston (8) is provided with axial through holes (9) uniformly distributed along the circumference, the second piston (8) is sleeved on the piston rod (2) and is arranged above the first piston (10), and the working of the first piston (10) and the working of the second piston (8) are not affected;
the air bag spring set (11) is sleeved on the piston rod (2) and is arranged above the second piston (8), the air bag spring set (11) is composed of a first air bag spring (5), a second air bag spring (6) and a third air bag spring (7), the first air bag spring (5), the second air bag spring (6) and the third air bag spring (7) are arranged in series, the first air bag spring (5) is provided with a buffer pad (4), and the buffer pad (4) is arranged between the first air bag spring (5) and the second air bag spring (6) and between the second air bag spring (6) and the third air bag spring (7); the air pressure of compressed air in the first air bag spring (5), the second air bag spring (6) and the third air bag spring (7) is sequentially increased from top to bottom, and the size of the air bags is sequentially increased;
when the deformation of the first air bag spring (5) and the second air bag spring (6) reaches the maximum, the edges of the first air bag spring and the second air bag spring are not contacted with the working cylinder barrel (3), and when the deformation of the third air bag spring (7) reaches the maximum, the edges of the third air bag spring can not completely seal the axial through holes (9) on the second piston (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711066254.3A CN107642575B (en) | 2017-11-02 | 2017-11-02 | Automobile double-cylinder type shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711066254.3A CN107642575B (en) | 2017-11-02 | 2017-11-02 | Automobile double-cylinder type shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107642575A CN107642575A (en) | 2018-01-30 |
| CN107642575B true CN107642575B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711066254.3A Active CN107642575B (en) | 2017-11-02 | 2017-11-02 | Automobile double-cylinder type shock absorber |
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| CN (1) | CN107642575B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350459B (en) * | 2019-07-10 | 2021-06-04 | 国网四川省电力公司电力科学研究院 | Transmission line strain insulator tower damping damper and mounting structure thereof |
| DE112020005357T5 (en) * | 2019-10-30 | 2022-08-11 | Kyb Corporation | SHOCK ABSORBER |
| CN115217880A (en) * | 2022-07-18 | 2022-10-21 | 郑州天源橡胶有限公司 | Combined rubber joint for improving transverse stability of air spring |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2072302A (en) * | 1980-03-19 | 1981-09-30 | Creusot Loire | Hydraulic energy absorber |
| CN1343576A (en) * | 2000-09-19 | 2002-04-10 | 朱昱学 | Inflated ball type vibration damper |
| CN201095296Y (en) * | 2007-11-01 | 2008-08-06 | 邓天锡 | Automobile bag type air spring and damping device |
| CN103821868A (en) * | 2014-03-13 | 2014-05-28 | 吉林大学 | Damper with two-way throttle valves and air spring |
| CN104417578A (en) * | 2013-09-06 | 2015-03-18 | Ta萨弗里有限公司 | A buffer |
| CN105927690A (en) * | 2016-06-21 | 2016-09-07 | 江苏大学 | Detachable double-cylinder type hydraulic buffer |
| CN207349350U (en) * | 2017-11-02 | 2018-05-11 | 华东交通大学 | A kind of automobile Double-drum type shock absorber of high reliability |
-
2017
- 2017-11-02 CN CN201711066254.3A patent/CN107642575B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2072302A (en) * | 1980-03-19 | 1981-09-30 | Creusot Loire | Hydraulic energy absorber |
| CN1343576A (en) * | 2000-09-19 | 2002-04-10 | 朱昱学 | Inflated ball type vibration damper |
| CN201095296Y (en) * | 2007-11-01 | 2008-08-06 | 邓天锡 | Automobile bag type air spring and damping device |
| CN104417578A (en) * | 2013-09-06 | 2015-03-18 | Ta萨弗里有限公司 | A buffer |
| CN103821868A (en) * | 2014-03-13 | 2014-05-28 | 吉林大学 | Damper with two-way throttle valves and air spring |
| CN105927690A (en) * | 2016-06-21 | 2016-09-07 | 江苏大学 | Detachable double-cylinder type hydraulic buffer |
| CN207349350U (en) * | 2017-11-02 | 2018-05-11 | 华东交通大学 | A kind of automobile Double-drum type shock absorber of high reliability |
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| Publication number | Publication date |
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| CN107642575A (en) | 2018-01-30 |
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