CN203670584U - Hydraulic damper with non-metallic compensator - Google Patents
Hydraulic damper with non-metallic compensator Download PDFInfo
- Publication number
- CN203670584U CN203670584U CN201320663786.6U CN201320663786U CN203670584U CN 203670584 U CN203670584 U CN 203670584U CN 201320663786 U CN201320663786 U CN 201320663786U CN 203670584 U CN203670584 U CN 203670584U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil cylinder
- compensation
- compensator
- metal compensator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005187 foaming Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 66
- 229910052755 nonmetal Inorganic materials 0.000 claims description 32
- 230000000694 effects Effects 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 claims description 5
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 101001017827 Mus musculus Leucine-rich repeat flightless-interacting protein 1 Proteins 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 150000002843 nonmetals Chemical class 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a hydraulic damper with a non-metallic compensator. The hydraulic damper with the non-metallic compensator comprises a front base cover, a rear base cover, an oil cylinder, oil cylinder outer sleeves, a piston assembly and the non-metallic compensator. The oil cylinder is arranged between the front base cover and the rear base cover. The oil cylinder outer sleeves surround the periphery of the front base cover and the periphery of the rear base cover respectively in a sealing mode. The piston assembly can move in the oil cylinder front and back. A compensation oil cavity is formed in the periphery of the cylinder between the outer sleeves. The piston assembly forms two working cavities in the oil cylinder. The compensation oil cavity is communicated with the two working cavities through an oil duct. The non-metallic compensator is arranged is arranged in the compensation oil cavity in the periphery of the oil cylinder. Gaps are formed between the non-metallic compensator and the front base cover and between the non-metallic compensator and the rear base cover respectively. The non-metallic compensator is an elastic body of a foaming structure, and is formed by a non-metallic compensator body and a plurality of independent bubbles inside the non-metallic compensator body, and the independent bubbles are not communicated with one another. The non-metallic compensator can carry out space compensation for the size changes of oil in the compensation oil cavity, when the hydraulic damper works, the non-metallic compensator is compressed and reset freely under the action of the independent bubbles, no constraint exists, compensation dosage is largely improved, the service life is prolonged, and leakage is avoided.
Description
Technical field
The utility model relates to a kind of hydraulic damper, relates to specifically a kind of hydraulic damper with non-metal compensator.
Background technique
Compensator is the indispensable part of the hydraulic damper of asymmetric cylinder structure, is arranged in the compensation oil pocket in damper oil cylinder outside.Two active chambers of damper oil cylinder are full of hydraulic oil and have oil duct to communicate with compensation oil pocket.Install at damper, in working procedure, the effect of compensator is that compensating piston bar moves and causes the not reciprocity of two active chamber liquid in-out force feed volumes on the one hand, is the variation of the damper internal hydraulic pressure oil volume that causes owing to expanding with heat and contract with cold of compensation on the other hand.Current compensator adopts spring spool or bellows structure conventionally, not only dismounting difficulty, and the Placement of damper oil cylinder and cylinder cover is limited to some extent, can not be applicable to the oil cylinder that thread formula connects; In addition, also must be provided with exhaust port and be connected with damper outside air, have that seal ring is fragile, resilient metal member fatigue failure causes leakage of oil, short problem of life-span.
Summary of the invention
The purpose of this utility model is to provide a kind of hydraulic damper, non air exit hole, without leakage, without fatigue failure hidden danger and applicable to the various Placements of damper oil cylinder and cylinder cover.
For achieving the above object, the utility model provides a kind of hydraulic damper with non-metal compensator, comprise: front and back flap, oil cylinder between the flap of described front and back, an oil cylinder overcoat of described front and back flap periphery is surrounded in sealing, the piston assembly that can move forward and backward in oil cylinder under hydraulic oil effect, a non-metal compensator, oil cylinder periphery between overcoat forms a compensation oil pocket, piston assembly forms two active chambers in oil cylinder, described compensation oil pocket is communicated with by oil duct with two active chambers, non-metal compensator is arranged in the compensation oil pocket of periphery of described oil cylinder, and respectively with front, rear flap has gap, non-metal compensator is the elastomer with foaming structure, formed by non-metal compensator body and its inner multiple mutual disconnected separated foam forming.
The structure of the external shape adaptive compensation oil pocket of described non-metal compensator.
Described non-metal compensator is annulated column shape, square bar shaped.
The material that described non-metal compensator adopts is foaming ethylene propylene diene rubber.
The beneficial effects of the utility model are, be immersed in the non-metal compensator in the hydraulic oil of compensation oil pocket in damper oil cylinder outside, due to its inner foaming structure for containing multiple bubbles, each bubble is relatively independent, be not communicated with mutually, form compressible, bounce-back and the elastomer of not oil suction, to the variation of compensation oil pocket fluid volume, carry out space compensation, when damper work, compensator is in separated foam effect lower compression, reset, freely without constraint, compensation rate can be greater than 50% of own vol, can reach hundreds of thousands fatigue life, and without leakage.
Brief description of the drawings
Fig. 1 is the structural representation of the hydraulic damper with non-metal compensator of one embodiment of the invention.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.First it should be noted that, the utility model is not limited to following embodiment, the spirit that those skilled in the art should embody from following mode of execution is understood the utility model, and each technical term can be done the most wide in range understanding based on Spirit Essence of the present utility model.In figure, same or analogous member uses the same reference numerals to represent.
The utility model provides a kind of hydraulic damper 10 with non-metal compensator, comprising: front flap 5, rear flap 1, be separately positioned on that an oil cylinder overcoat 4 of the periphery of front stall lid 5, rear flap 1 is surrounded in damping block 10a, the 10b on front flap 5 and rear flap 1, the oil cylinder 3 between front flap 5 and rear flap 1, sealing, the piston assembly that can move forward and backward in oil cylinder 2 under hydraulic oil effect 6, a non-metal compensator 3.
Piston assembly 6 is made up of piston head 6a and piston rod 6b.The periphery of the oil cylinder 2 between front flap 5 and rear flap 1 forms a compensation oil pocket 7.Piston assembly 6 forms active chamber 8 and 9 in oil cylinder, and piston rod 6b stretches out from active chamber 9, and compensation oil pocket is communicated with by oil duct with two active chambers 8,9 with 7.Oil duct is made up of the oil duct on oil duct 1a and front and back damping block 10b, 10a on oil duct 5a, rear flap 1 on front flap 5 (not indicating).Non-metal compensator 3, it is arranged in the compensation oil pocket 7 of periphery of oil cylinder 2.Non-metal compensator 3, for having the elastomer of foaming structure, is made up of non-metal compensator body 3b and its inner multiple mutual disconnected bubble 3a forming.Non-metal compensator 3 is annulated column shape, certainly its external shape can according to compensation oil pocket structural change, for example also can the side's of being bar shaped.Non-metal compensator can adopt ethylene propylene diene rubber to make by special foam process.
In Fig. 1, non-metal compensator body 3 is arranged in compensation oil pocket 7, and compensation oil pocket 7 is made up of rear flap 1, oil cylinder 2, front flap 5 and oil cylinder overcoat 4.Non-metal compensator body 3 can change according to size, the structure of compensation oil pocket, and has certain gap with forward and backward flap 5,1 respectively, to ensure that compensator 3 stretches, compresses without constraint.Damper 10 makes compensator body 3 compression on a small quantity in advance by pressurization in the oily process of filling, makes no matter piston all has compression at any position compensation device, two-way compensate function stretches.When piston assembly 6 is moved to the left, the rodless cavity 8 of oil cylinder 2 go out the oil-feed volume that oil volume is greater than rod chamber 9, in compensation oil pocket 7, fluid volume increases, 3b is compressed for compensator body.When piston assembly 6 moves right, the oil-feed volume of the rodless cavity 8 of oil cylinder 2 is greater than rod chamber 9 and goes out oil volume, and in compensation oil pocket, fluid volume reduces, and compensator body 3 resets under separated foam 3a effect.The ambient temperature of damper 10 raises, fluid volumetric expansion, compensator body 3b compression; Damper 10 ambient temperatures reduce, fluid volume-diminished, and compensator body 3b resets.
In sum, the non-metal compensator 3 of bubble in the hydraulic oil of the compensation oil pocket 7 around damper oil cylinder is because it is inner for containing multiple bubble 3a structures, each bubble 3a is independent, be not communicated with mutually, form compressible, bounce-back and the elastomer of not oil suction, to the variation of compensation oil pocket fluid volume, carry out space compensation, when damper 10 is worked, compensator 3 is in separated foam effect lower compression, reset, and freely, without constraint, compensation rate can be greater than 50% of own vol, can reach hundreds of thousands fatigue life, and without leakage.
Should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned instruction content of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (4)
1. one kind has the hydraulic damper of non-metal compensator, comprise: front and back flap, oil cylinder between the flap of described front and back, an oil cylinder overcoat of described front and back flap periphery is surrounded in sealing, the piston assembly that can move forward and backward in oil cylinder under hydraulic oil effect, oil cylinder periphery between overcoat forms a compensation oil pocket, piston assembly forms two active chambers in oil cylinder, described compensation oil pocket is communicated with by oil duct with two active chambers, it is characterized in that, also comprise a non-metal compensator, it is arranged in the compensation oil pocket of periphery of described oil cylinder, and respectively with front, rear flap has gap, non-metal compensator is the elastomer with foaming structure, formed by non-metal compensator body and its inner multiple mutual disconnected separated foam forming.
2. the hydraulic damper with non-metal compensator according to claim 1, is characterized in that, the external shape of described non-metal compensator is applicable to the structure of compensation oil pocket.
3. the hydraulic damper with non-metal compensator according to claim 2, is characterized in that, described non-metal compensator is annulated column shape or square bar shaped.
4. according to the hydraulic damper with non-metal compensator described in any one of claims 1 to 3, it is characterized in that, the material that described non-metal compensator adopts is foaming ethylene propylene diene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663786.6U CN203670584U (en) | 2013-10-24 | 2013-10-24 | Hydraulic damper with non-metallic compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663786.6U CN203670584U (en) | 2013-10-24 | 2013-10-24 | Hydraulic damper with non-metallic compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203670584U true CN203670584U (en) | 2014-06-25 |
Family
ID=50966885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320663786.6U Expired - Lifetime CN203670584U (en) | 2013-10-24 | 2013-10-24 | Hydraulic damper with non-metallic compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203670584U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389938A (en) * | 2014-10-22 | 2015-03-04 | 湖北扬飞减震器有限公司 | Foamed rubber filled type/adjustable elastic car shock absorber |
| CN106884922A (en) * | 2015-12-15 | 2017-06-23 | 上海瑞纽机械股份有限公司 | A kind of hydraulic damper compensated automatically with oil pocket |
-
2013
- 2013-10-24 CN CN201320663786.6U patent/CN203670584U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389938A (en) * | 2014-10-22 | 2015-03-04 | 湖北扬飞减震器有限公司 | Foamed rubber filled type/adjustable elastic car shock absorber |
| CN106884922A (en) * | 2015-12-15 | 2017-06-23 | 上海瑞纽机械股份有限公司 | A kind of hydraulic damper compensated automatically with oil pocket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI RUINIU MACHINERY + EQUIPMENT MANUFACTURE Free format text: FORMER NAME: SHANGHAI RUINIU MACHINERY + EQUIPMENT MANUFACTURE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200120 Shanghai city Pudong New Area Xuanqiao Town Park Road No. 105 Patentee after: SHANGHAI RAILNU MACHINERY Corp. Address before: 200120 Shanghai city Pudong New Area Xuanqiao Town Park Road No. 105 Patentee before: SHANGHAI RUINIU MACHINERY & EQUIPMENT MANUFACTURE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |