CN104695791A - Damping coefficient variable hydraulic buffer - Google Patents
Damping coefficient variable hydraulic buffer Download PDFInfo
- Publication number
- CN104695791A CN104695791A CN201310664588.6A CN201310664588A CN104695791A CN 104695791 A CN104695791 A CN 104695791A CN 201310664588 A CN201310664588 A CN 201310664588A CN 104695791 A CN104695791 A CN 104695791A
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- piston
- piston rod
- pin
- floating platform
- cylinder body
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Abstract
The invention provides a damping coefficient variable hydraulic buffer which comprises a cylinder body, a piston rod, a piston, a floating platform, a spring, a pin and an end cover, wherein the piston and the piston rod are concentrically connected by screw threads; the pin is arranged in a small hole in the bottom surface of the piston; the compression spring and the floating platform are arranged at one end, connected with the piston, of the piston rod; the compression spring compresses the floating platform and the pin on the end surface of the piston; the end cover and the piston rod are concentric and are arranged at one end of the cylinder body; and damping holes are formed at one end, connected with the piston, of the piston rod. The buffer has an obvious buffering effect, is simple and reliable in structure, better in manufacturability and easy for engineering application.
Description
Technical field
The present invention relates to a kind of oil buffer of mutative damp coefficient, especially one is applied to aircraft door opening mechanism, can realize when different Input Forces, the snubber that damped coefficient changes thereupon.
Background technology
Domestic oil buffer is utilize the buffer in hydraulic cylinder to carry out deceleration vibration damping mostly, and the vibration damping for non-hydraulic infrastructure product makees snubber with the common spring of deceleration and rubber.Domestic at present still only have hydraulic cylinder internal buffer device to adopt piccolo type damping hole arrangement mode, as shown in Figure 1, but the damped coefficient of this type buffer changes with the change of motion process, but not change with external load and change, therefore can not meet the requirement that operating mode opened by aircraft door.
External particularly American-European due to Aviation Industry needs, the oil buffer research of aircraft is comparatively deep, but the piston rod of most of snubber and piston type of attachment complexity, engineer applied difficulty is large.
Summary of the invention
The technical problem to be solved in the present invention is: the oil buffer providing a kind of adaptive damping coefficient, and the damped coefficient of this snubber can change with the change of external load, is conducive to meeting the requirement that operating mode opened by aircraft door.
The present invention is realized by following technical measures: a kind of oil buffer of adaptive damping coefficient, comprise cylinder body, piston rod and piston, floating platform, spring, pin and end cap, piston is connected by the threaded coaxial heart with piston rod, pin is arranged in the aperture on piston bottom surface, one end that piston rod is connected with piston is provided with Compress Spring and floating platform, and floating platform and pin are pressed on piston end surface by Compress Spring; End cap and piston rod concentric are also arranged on one end of cylinder body, and one end that piston rod is connected with piston is provided with damping hole.
Beneficial effect of the present invention: buffering effect of the present invention is obvious, structure is simple, reliable, and anufacturability is better, is easy to engineer applied.
Accompanying drawing explanation
Fig. 1 is piccolo type buffer unit structure schematic diagram in existing hydraulic cylinder.
Fig. 2 is sectional structure chart of the present invention.
Fig. 3 is outline drawing of the present invention.
In figure, 1, cylinder body; 2, spring; 3, piston; 4, the first damping hole; 5, pin; 6, end cap; 7, piston rod; 8, the second damping hole; 9, cushion chamber B; 10, floating platform; 11, cushion chamber A.
Technical scheme
Below in conjunction with accompanying drawing and example, the invention will be further described:
In Fig. 2,3 illustrated embodiments, a kind of oil buffer of adaptive damping coefficient, it comprises cylinder body 1, piston rod 7 and piston 3, floating platform 10, spring 2, pin 5 and end cap 6, piston 3 is connected by the threaded coaxial heart with piston rod 7, pin 5 is arranged in the aperture on piston 3 bottom surface, piston 3 certain length is stretched out in the elongate rod side of pin 5, and one end that piston rod 7 is connected with piston 3 is provided with spring 2 and floating platform 10, and floating platform 10 and pin 5 are pressed on piston 3 end face by spring 2; End cap 6 is with piston rod 7 concentric and be arranged on one end of cylinder body 1, and one end that piston rod 7 is connected with piston 3 is provided with the first damping hole 4 and the second damping hole 8.
When the oil buffer of adaptive damping coefficient is static, floating platform 10 and pin 5 are pressed on piston 3 by the pressure by spring 2, and there is certain distance at the edge of floating platform 10 far from the first damping hole 4 of the rightmost side, the first damping hole 4 and the second damping hole 8 can all be exposed.
During work, mutative damp buffering piston 3 is by external load effect, piston 3 moves from left to right, pin 5 is subject to the oil liquid pressure (pressure differential of cushion chamber A and cushion chamber B) in snubber chamber, now oil liquid pressure is also not enough to the pressure effect overcoming spring 2, floating platform 10 is not thus to left movement, and two damping holes are still in the state exposed; When external load increases, piston 3 movement velocity increases thereupon, pin 5 also increases by the pressure (pressure differential of cushion chamber A11 and cushion chamber B9) of chamber inner fluid thereupon, so oil pocket pressure promotion pin 5 and floating platform 10 are to left movement, and therefore block the first damping hole 4, only second damping hole 8 in remaining left side exposes, thus causes the change of the damping hole gross area, the i.e. change thereupon of damped coefficient, to adapt to the change of external load.
Claims (1)
1. the oil buffer of an adaptive damping coefficient, comprise cylinder body, piston rod and piston, it is characterized in that: also comprise floating platform, spring, pin and end cap, piston is connected by the threaded coaxial heart with piston rod, pin is arranged in the aperture on piston bottom surface, one end that piston rod is connected with piston is provided with Compress Spring and floating platform, and floating platform and pin are pressed on piston end surface by Compress Spring; End cap and piston rod concentric are also arranged on one end of cylinder body, and one end that piston rod is connected with piston is provided with damping hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664588.6A CN104695791B (en) | 2013-12-09 | 2013-12-09 | Damping coefficient variable hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664588.6A CN104695791B (en) | 2013-12-09 | 2013-12-09 | Damping coefficient variable hydraulic buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104695791A true CN104695791A (en) | 2015-06-10 |
| CN104695791B CN104695791B (en) | 2017-01-18 |
Family
ID=53343300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310664588.6A Active CN104695791B (en) | 2013-12-09 | 2013-12-09 | Damping coefficient variable hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104695791B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809846A (en) * | 2018-04-02 | 2022-07-29 | 赛峰客舱公司 | Soft self-closing door damper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4453638A (en) * | 1982-09-27 | 1984-06-12 | Wallace Christopher D | Hydraulic shock absorber |
| JPH08135714A (en) * | 1994-11-14 | 1996-05-31 | Toyota Motor Corp | Hydraulic shock absorber |
| CN2268808Y (en) * | 1996-07-26 | 1997-11-26 | 赵守经 | Hydraulic damp varying buffer shock absorber |
| WO2007061396A1 (en) * | 2005-11-22 | 2007-05-31 | Pereverzyev Viktor Hennadievic | Self-adjusting shock absorber provided with a resistance force-limiting valve |
| CN101886683A (en) * | 2010-01-29 | 2010-11-17 | 宁波亚德客自动化工业有限公司 | Adjustable hydraulic buffer |
| CN102477829A (en) * | 2010-11-29 | 2012-05-30 | 董芬芳 | Hydraumatic variable force buffer |
-
2013
- 2013-12-09 CN CN201310664588.6A patent/CN104695791B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4453638A (en) * | 1982-09-27 | 1984-06-12 | Wallace Christopher D | Hydraulic shock absorber |
| JPH08135714A (en) * | 1994-11-14 | 1996-05-31 | Toyota Motor Corp | Hydraulic shock absorber |
| CN2268808Y (en) * | 1996-07-26 | 1997-11-26 | 赵守经 | Hydraulic damp varying buffer shock absorber |
| WO2007061396A1 (en) * | 2005-11-22 | 2007-05-31 | Pereverzyev Viktor Hennadievic | Self-adjusting shock absorber provided with a resistance force-limiting valve |
| CN101886683A (en) * | 2010-01-29 | 2010-11-17 | 宁波亚德客自动化工业有限公司 | Adjustable hydraulic buffer |
| CN102477829A (en) * | 2010-11-29 | 2012-05-30 | 董芬芳 | Hydraumatic variable force buffer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809846A (en) * | 2018-04-02 | 2022-07-29 | 赛峰客舱公司 | Soft self-closing door damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104695791B (en) | 2017-01-18 |
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