CN2677901Y - Adjustable hydraulic buffer for vehicle analogue collision - Google Patents
Adjustable hydraulic buffer for vehicle analogue collision Download PDFInfo
- Publication number
- CN2677901Y CN2677901Y CN 200320102790 CN200320102790U CN2677901Y CN 2677901 Y CN2677901 Y CN 2677901Y CN 200320102790 CN200320102790 CN 200320102790 CN 200320102790 U CN200320102790 U CN 200320102790U CN 2677901 Y CN2677901 Y CN 2677901Y
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- Prior art keywords
- piston
- piston rod
- cylinder body
- cap
- collision
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- Expired - Lifetime
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- 239000000872 buffer Substances 0.000 title claims abstract description 18
- 206010008469 Chest discomfort Diseases 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004146 energy storage Methods 0.000 abstract 1
- 238000011076 safety test Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 9
- 238000009863 impact test Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model discloses an adjustable hydraulic buffer for vehicle analogue collision used for vehicle passive safety test, belonging to the range of cushioning device. The utility model comprises a cylinder body, a cylinder cap and a piston. The cylinder body is divided into a high pressure chamber, a low pressure chamber, and an energy storage chamber by an inner cylinder sleeve and the piston, and impedance screws and back flow holes are arranged on the inner cylinder sleeve wall; the piston and a piston rod are fixed in the inner cylinder sleeve through the cap, a bush is sheathed between the piston rod and the cap, a one way valve is fixed on the piston by a retainer ring, a bearing bracket and the cap are fastened with screws on the opening of the right end of the cylinder body, the piston rod, the cap and the cylinder body are sealed by sealing rings respectively, and a ram is fixed with screws on the end of the piston rod. The utility model has the advantage of low manufacturing cost; besides, the utility model can adjust the throttling area in large range through changing impedance screws of different specifications to control impact deceleration waveform, which can satisfy various rules and other impact waveforms of various requirements, wherein, the waveforms have good stability and repeatability.
Description
Technical field
The utility model belongs to the snubber assembly scope, particularly is used for a kind of simulative automobile collision adjustable hydraulic buffer that vehicle passive safety detects.
Background technology
The test of vehicle passive safety comprises: two kinds of real vehicle collision test and simulative automobile collision (chassis) tests.Because real vehicle collision test is a kind of destructive test, and is costly, therefore often be subjected to fund, equipment and personnel's restriction.Compare with real vehicle collision test, the simulative automobile impact test has advantages such as good reproducibility, collision waveform are controlled easily, testing expenses are low, be important research technique in parts exploitation, the production runes such as automotive seat, securing band, bearing circle, instrument panel, air bag, now generally by auto vendor and scientific research institution adopt both at home and abroad.The ultimate principle of simulative automobile impact test is: by the situation of buffering and reducing device simulation real vehicle car body collapse-deformation in collision process, thereby obtain testing the collision retarded velocity waveform that needs.Therefore, buffering and reducing device is a very crucial device in the simulative automobile impact test, and it has determined a series of important parameters such as acceleration, speed and burst length of chassis in collision.Simulative automobile collision roughly is divided into following four kinds with snubber assembly: 1. high pressure gas build throttling stem stem formula shock table, 2. hydraulic servo formula shock table, 3. metal or plastic tube fold energy-absorption type buffering analogue means, 4. fluid pressure type snubber assembly.Wherein, preceding two kinds involve great expense, and generally need tens to up to a million dollars; And the third collision retarded velocity waveform is wayward.Bydraulic buffers all has very big advantage with respect to above several snubber assemblys in several respects such as stability, repeatability, costs, therefore is the desirable snubber assembly of simulative automobile collision.
Bydraulic buffers is general only as the safety guard in the engineering, and is lower for the requirement of collision waveform, and the therefore general method that adopts estimation is not accurately controlled.In addition, collision waveform can not be regulated on a large scale generally speaking.And the simulative automobile impact test requires more accurate control collision waveform, and test need be regulated collision waveform according to different requirements at every turn, and this just gives the higher requirement of having researched and proposed of bydraulic buffers.Present stage, mainly there are two difficult points in the research of colliding with the adjustable hydraulic damping device for simulative automobile:
1. need the analog computation of degree of precision to carry out Aided Design and debugging, to adapt to accurate control to collision waveform.
2. need design bydraulic buffers orifice size regulative mode easily and efficiently, to adapt to the needs of regulating collision waveform.
Summary of the invention
The purpose of this utility model provides a kind of simulative automobile collision adjustable hydraulic buffer.General bydraulic buffers is made up of cylinder body, cylinder cap, piston, and it is characterized in that: described adjustable hydraulic buffer is divided into high pressure chest, low-pressure cavity and energy-storing chamber three parts by inner cylinder liner and piston with cylinder body, and the inner casing jacket wall is provided with impedance screw and return port; Piston and piston rod are fixed in the inner cylinder liner by end cap, lining is enclosed between piston rod and the end cap, retaining valve is fixed on the piston by back-up ring, and support and end cap are fastened on by screw on the right-end openings of cylinder body, and piston rod and end cap and cylinder body seal with O-ring seal respectively; Ram by screw retention on piston rod end.
The center pit of described impedance screw is the different infundibulate aperture of diameter, is non-equidistant intervals and distributes on the inner casing jacket wall.
The beneficial effects of the utility model are that cost of manufacture is low; Just can regulate by the impedance screw of changing different size orifice size, and then control collision retarded velocity waveform.Through verification experimental verification, this impact damper can be realized the adjusting on a large scale to orifice size, thereby can satisfy the collision waveform of various rules and other various requirements, waveform stabilization, good reproducibility.
Description of drawings
Fig. 1 is simulative automobile collision adjustable hydraulic buffer structural representation.
Fig. 2 is the structural representation of impedance screw.
Fig. 3 bydraulic buffers principle of work synoptic diagram.
Embodiment
Figure 1 shows that simulative automobile collision adjustable hydraulic buffer structural representation.Described adjustable hydraulic buffer is divided into energy-storing chamber 3 and high pressure chest 19 two parts by inner cylinder liner 6 with cylinder body 1, piston 5 and piston rod 15 are fixed in the inner cylinder liner 6 by end cap 8, lining 10 is enclosed between piston rod 15 and the support 9, retaining valve 18 is fixed on the piston 5 by back-up ring 20, and inner cylinder liner 6 walls are provided with impedance screw 2 and return port 14; Support 9 and end cap 8 are fastened on by screw 13 on the right-end openings of cylinder body 1, and piston rod 15 seals with O-ring seal 7 respectively with end cap 8 and cylinder body 1; Cylinder cap 4 by screw 13 be fastened on cylinder body 1 above.Ram and 11 be fixed on piston rod 15 terminations by screw 12.
The center pit of described impedance screw is the different infundibulate aperture (as shown in Figure 2) of diameter, and non-equidistant intervals distributes on inner cylinder liner 6 walls.
This impact damper adopts the regulative mode of impedance screw as orifice size.The distribution of throttle orifice has 26 by the analog computation Aided Design.Impedance screw is divided into 6 grades: Φ 4.0, and Φ 4.5, and Φ 5.0, and Φ 5.5, and Φ 6.0, and Φ 6.5, just can regulate by the impedance screw of changing different size like this orifice size, and then control collision retarded velocity waveform.Through verification experimental verification, this impact damper can be realized the adjusting on a large scale to orifice size, thereby can satisfy the collision waveform of various rules and other various requirements, waveform stabilization, good reproducibility.
Claims (2)
1. a simulative automobile collides and uses adjustable hydraulic buffer, form by cylinder body, cylinder cap, piston, it is characterized in that: described adjustable hydraulic buffer is divided into high pressure chest, low-pressure cavity and energy-storing chamber three parts by inner cylinder liner and piston with cylinder body, and the inner casing jacket wall is provided with impedance screw and return port; Piston and piston rod are fixed in the inner cylinder liner by end cap, lining is enclosed between piston rod and the end cap, retaining valve is fixed on the piston by back-up ring, and support and end cap are fastened on by screw on the right-end openings of cylinder body, and piston rod and end cap and cylinder body seal with O-ring seal respectively; Ram by screw retention on piston rod end.
2. adjustable hydraulic buffer is used in described simulative automobile collision according to claim 1, and it is characterized in that: the center pit of described impedance screw is the different infundibulate aperture of diameter, and non-equidistant intervals distributes on the inner casing jacket wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320102790 CN2677901Y (en) | 2003-11-06 | 2003-11-06 | Adjustable hydraulic buffer for vehicle analogue collision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320102790 CN2677901Y (en) | 2003-11-06 | 2003-11-06 | Adjustable hydraulic buffer for vehicle analogue collision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677901Y true CN2677901Y (en) | 2005-02-09 |
Family
ID=34580630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320102790 Expired - Lifetime CN2677901Y (en) | 2003-11-06 | 2003-11-06 | Adjustable hydraulic buffer for vehicle analogue collision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677901Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192827A (en) * | 2010-02-03 | 2011-09-21 | 高田株式会社 | Impact test device and impact test method |
| CN101652648B (en) * | 2007-03-15 | 2013-11-06 | 伊利诺斯工具制品有限公司 | Method and system for conducting crash tests |
| CN105805216A (en) * | 2016-05-31 | 2016-07-27 | 江苏科技大学 | High-speed hydraulic buffering device for automobile crash test |
| CN106644348A (en) * | 2017-02-16 | 2017-05-10 | 公安部交通管理科学研究所 | Air pump guide rail type vehicle instrument collision validation device |
| CN112594247A (en) * | 2020-12-24 | 2021-04-02 | 广州风神汽车有限公司 | Bidirectional damping buffer oil cylinder |
| CN114593171A (en) * | 2022-05-11 | 2022-06-07 | 江苏科曼赛特减振器有限公司 | Compression hydraulic buffer structure |
-
2003
- 2003-11-06 CN CN 200320102790 patent/CN2677901Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101652648B (en) * | 2007-03-15 | 2013-11-06 | 伊利诺斯工具制品有限公司 | Method and system for conducting crash tests |
| CN102192827A (en) * | 2010-02-03 | 2011-09-21 | 高田株式会社 | Impact test device and impact test method |
| CN102192827B (en) * | 2010-02-03 | 2015-04-01 | 高田株式会社 | Impact test device and impact test method |
| CN105805216A (en) * | 2016-05-31 | 2016-07-27 | 江苏科技大学 | High-speed hydraulic buffering device for automobile crash test |
| CN105805216B (en) * | 2016-05-31 | 2017-09-08 | 江苏科技大学 | A kind of vehicle impact testing high-speed hydraulic buffer unit |
| CN106644348A (en) * | 2017-02-16 | 2017-05-10 | 公安部交通管理科学研究所 | Air pump guide rail type vehicle instrument collision validation device |
| CN112594247A (en) * | 2020-12-24 | 2021-04-02 | 广州风神汽车有限公司 | Bidirectional damping buffer oil cylinder |
| CN114593171A (en) * | 2022-05-11 | 2022-06-07 | 江苏科曼赛特减振器有限公司 | Compression hydraulic buffer structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131106 Granted publication date: 20050209 |