CN204327839U - A kind of gas oil separation structure of locomotive vehicle oil hydraulic damper - Google Patents
A kind of gas oil separation structure of locomotive vehicle oil hydraulic damper Download PDFInfo
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- CN204327839U CN204327839U CN201420786335.6U CN201420786335U CN204327839U CN 204327839 U CN204327839 U CN 204327839U CN 201420786335 U CN201420786335 U CN 201420786335U CN 204327839 U CN204327839 U CN 204327839U
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Abstract
The utility model discloses a kind of gas oil separation structure of locomotive vehicle oil hydraulic damper.Existing vibration damper still reliably can carry out Oil-gas Separation when fundamentally can not solve ultimate elongation position.The utility model comprises plastic gas bag, bottom valve, bottom valve one-way valve and bottom valve compression valve block; Bottom valve and inner cylinder interference fit, coordinate with chassis clearance; Multiple bottom valve oil-through holes that bottom valve offers spill port and is uniformly distributed along the circumference; Bottom valve compression valve block covers the outer end of all bottom valve oil-through holes, and is connected by screw with bottom valve; Bottom valve one-way valve is fixed on bottom valve, and the spill port covering bottom valve is inner; Plastic gas bag is arranged in the oil pocket between oil storage cylinder and inner cylinder.The utility model can ensure that vibration damper still reliably can carry out Oil-gas Separation when ultimate elongation position, is applicable to the oil-pressure damper of vertical and horizontal mounting point simultaneously.
Description
Technical field
The utility model belongs to rail vehicles field, relates to different kinds of railways locomotive vehicle oil hydraulic damper, is specifically related to a kind of gas oil separation structure of locomotive vehicle oil hydraulic damper.
Background technique
For ensureing that vibration damper normally can produce damping force, hydraulic oil need be full of in inner cylinder, for making vibration damper play vibration-damping function, require that hydraulic oil can flow rapidly between pressure cylinder and oil storage cylinder, the oil gas avoiding air or air to mix with fluid enters pressure cylinder through bottom valve.Existing most of vibration damper existing hydraulic oil in oil storage cylinder also has air, in oil storage cylinder, thus easily produce the emulsion (fluid and air mix milk) of fluid.After entering pressure cylinder from oil storage cylinder in the stretching travel of the gas mixture after emulsification at vibration damper, the damping function of vibration damper will be reduced, and emulsion reduces oil quality further, make every physical and chemical index of hydraulic oil that irreversible change occur, the precision parts of infringement vibration damper, cause vibration damper shortening in working life, Accident due to quality takes place frequently.What is more important is after rolling stock quits work, Oil-gas Separation in vibration damper inner cylinder, makes the cavity of resorption being positioned at piston there is portion of air, when vibration damper works again, first need the air layer of discharging piston cavity of resorption, at this moment the damping function of vibration damper will weaken and even lost efficacy.This is a unacceptable potential safety hazard for existing railway locomotive, passenger vehicle, motor-car, high ferro.Current solution is realized by newly-increased component, if notification number is CN 202301718 U, name is called the Chinese patent literature of " a kind of gas and oil separating plant of oil-pressure damper ", but when the program is only applicable to vibration damper vertical installation, and be not suitable for the horizontal mounting point of vibration damper; For another example notification number is CN 202326892 U, name is called the Chinese patent literature of " a kind of gas and oil separating plant of oil-pressure damper ", the program is only applicable to the horizontal mounting point of vibration damper, and most critical be calculate theoretically the program can not only meet when ultimate elongation position all spill ports of bottom valve all in hydraulic oil but also the oil mass simultaneously meeting the hydraulic oil when limited compression position can not exceed vibration damper inner space volume.Structure for above-mentioned two schemes is all comparatively complicated, and fundamentally can not solve vibration damper and still reliably can carry out Oil-gas Separation when ultimate elongation position, be therefore necessary to propose the gas oil separation structure that a kind of structure can be applicable to simply again vertical and horizontal mounting point simultaneously.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, proposes a kind of gas oil separation structure of locomotive vehicle oil hydraulic damper, is applicable to the vertical and horizontal mounting point of vibration damper and structure is simple simultaneously.
The utility model takes following technical proposals:
The utility model comprises plastic gas bag, bottom valve, bottom valve one-way valve and bottom valve compression valve block; Described bottom valve and inner cylinder interference fit, coordinate with chassis clearance; Multiple bottom valve oil-through holes that bottom valve offers spill port and is uniformly distributed along the circumference; Described bottom valve compression valve block covers the outer end of all bottom valve oil-through holes, and is connected by screw with bottom valve; Described bottom valve one-way valve is fixed on bottom valve, and the spill port covering bottom valve is inner; Described plastic gas bag is arranged in the oil pocket between oil storage cylinder and inner cylinder.
Described bottom valve is also connected by locating stud with chassis.
Be provided with baffle plate between described bottom valve compression valve block and screw, baffle plate compresses bottom valve compression valve block.
The air that pressure is standard atmospheric pressure is filled with in described plastic gas bag.
Piston compression valve block and piston stretching valve block are all nested with on the piston rod; Piston compression valve block is arranged on the one end near piston rod afterbody, covers one end of the first piston oil-through hole of piston; Piston stretching valve block is arranged on the one end near piston rod head, covers one end of the second piston oil-through hole of piston; The head of piston rod is connected with nut thread.
Between described piston compression valve block and piston rod, between piston stretching valve block and nut, be equipped with baffle plate.
The beneficial effect that the utility model has:
1, the utility model is by increasing plastic gas bag and improving bottom valve oil inlet hole position, just can ensure that vibration damper still reliably can carry out Oil-gas Separation when ultimate elongation position, be applicable to the oil-pressure damper of vertical and horizontal mounting point simultaneously.
2, the utility model also can apply to vehicle shock absorber and damper of motorcycle etc. using hydraulic oil as the vibration damper of working medium.
3, the utility model structure is simple, and cost is low.
Accompanying drawing explanation
Fig. 1 is overall structure sectional view of the present utility model;
Fig. 2-1 is the structural representation of bottom valve in the utility model;
Fig. 2-2 is the sectional view of bottom valve in the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Fig. 1,2-1 and 2-2, a kind of gas oil separation structure of locomotive vehicle oil hydraulic damper, comprises plastic gas bag 5, bottom valve 7, bottom valve one-way valve 13 and bottom valve compression valve block 14; Bottom valve 7 and inner cylinder 2 interference fit, with chassis 8 Spielpassung, and bottom valve 7 is connected by locating stud with chassis 8; Six bottom valve oil-through holes 16 that bottom valve 7 offers spill port 15 and is uniformly distributed along the circumference; Bottom valve compression valve block 14 covers the outer end of six bottom valve oil-through holes 16, and is connected by screw with bottom valve 7; Be provided with baffle plate between bottom valve compression valve block 14 and screw, baffle plate compresses bottom valve compression valve block 14; Bottom valve one-way valve 13 is fixed on bottom valve 7, and the spill port 15 covering bottom valve is inner; Piston compression valve block 10 and piston stretching valve block 11 are all nested with on piston rod 1; Piston compression valve block 10 is arranged on the one end near piston rod 1 afterbody, covers one end of the first piston oil-through hole of piston; Piston stretching valve block 11 is arranged on the one end near piston rod 1 head, covers one end of the second piston oil-through hole 4 of piston; The head of piston rod 1 is connected with nut thread; Baffle plate is equipped with between piston compression valve block 10 and piston rod 1, between piston stretching valve block 11 and nut; Plastic gas bag 5 is arranged in the 3rd oil pocket between oil storage cylinder 6 and inner cylinder 2, is filled with the air that pressure is standard atmospheric pressure in plastic gas bag 5.
The gas oil separation structure of this locomotive vehicle oil hydraulic damper, working principle:
When vibration damper is in compression stroke, piston rod 1 inner cylinder 2 indentation relatively, a part of hydraulic oil 3 in second oil pocket 12 is opened piston compression valve block 10 and is flowed to the first oil pocket 9, another part hydraulic oil 3 is opened bottom valve compression valve block 14 through the bottom valve oil-through hole 16 of bottom valve and is flowed in oil storage cylinder 6, and the volume shared in oil storage cylinder 6 of this part hydraulic oil 3 is provided by plastic gas bag 5 volume by compression; Hydraulic oil 3 does not mix with air in the whole process of shock absorbers compression.
When vibration damper is in stretching travel, piston rod 1 relatively inner cylinder 2 stretches out, and the volume of the second oil pocket 12 increases, and pressure reduces, and forces a part of hydraulic oil 3 to open piston stretching valve block 11 from the first oil pocket 9 and flows into the second oil pocket 12; Another part hydraulic oil 3 is opened bottom valve one-way valve 13 by the spill port 15 of bottom valve and is flowed into the second oil pocket 12 in oil storage cylinder 6, and this impels the hydraulic oil 3 in oil storage cylinder 6 to reduce, and air pressure reduces, and plastic gas bag 5 expands; Piston rod 1 stretches out and is compensated by the hydraulic oil 3 in the first oil pocket 9 and oil storage cylinder 6 at the volume that the second oil pocket 12 is available; Guarantee that the spill port 15 of bottom valve is in hydraulic oil 3 all the time, vibration damper just can be avoided to suck air when ultimate elongation position from spill port 15, fundamentally eliminate air and mix with hydraulic oil 3, thus thoroughly avoid the emulsion of oil gas.
Claims (6)
1. a gas oil separation structure for locomotive vehicle oil hydraulic damper, comprises plastic gas bag, bottom valve, bottom valve one-way valve and bottom valve compression valve block, it is characterized in that:
Described bottom valve and inner cylinder interference fit, coordinate with chassis clearance; Multiple bottom valve oil-through holes that bottom valve offers spill port and is uniformly distributed along the circumference; Described bottom valve compression valve block covers the outer end of all bottom valve oil-through holes, and is connected by screw with bottom valve; Described bottom valve one-way valve is fixed on bottom valve, and the spill port covering bottom valve is inner; Described plastic gas bag is arranged in the oil pocket between oil storage cylinder and inner cylinder.
2. the gas oil separation structure of a kind of locomotive vehicle oil hydraulic damper according to claim 1, is characterized in that: described bottom valve is also connected by locating stud with chassis.
3. the gas oil separation structure of a kind of locomotive vehicle oil hydraulic damper according to claim 1, is characterized in that: be provided with baffle plate between described bottom valve compression valve block and screw, and baffle plate compresses bottom valve compression valve block.
4. the gas oil separation structure of a kind of locomotive vehicle oil hydraulic damper according to claim 1, is characterized in that: be filled with the air that pressure is standard atmospheric pressure in described plastic gas bag.
5. the gas oil separation structure of a kind of locomotive vehicle oil hydraulic damper according to claim 1, is characterized in that: piston compression valve block and piston stretching valve block are all nested with on the piston rod; Piston compression valve block is arranged on the one end near piston rod afterbody, covers one end of the first piston oil-through hole of piston; Piston stretching valve block is arranged on the one end near piston rod head, covers one end of the second piston oil-through hole of piston; The head of piston rod is connected with nut thread.
6. the gas oil separation structure of a kind of locomotive vehicle oil hydraulic damper according to claim 5, is characterized in that: between described piston compression valve block and piston rod, be equipped with baffle plate between piston stretching valve block and nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786335.6U CN204327839U (en) | 2014-12-12 | 2014-12-12 | A kind of gas oil separation structure of locomotive vehicle oil hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786335.6U CN204327839U (en) | 2014-12-12 | 2014-12-12 | A kind of gas oil separation structure of locomotive vehicle oil hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327839U true CN204327839U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420786335.6U Active CN204327839U (en) | 2014-12-12 | 2014-12-12 | A kind of gas oil separation structure of locomotive vehicle oil hydraulic damper |
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| Country | Link |
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| CN (1) | CN204327839U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523571A (en) * | 2016-12-30 | 2017-03-22 | 珠海市业成轨道交通设备科技有限公司 | Oil-pressure gasbag shock absorber system for high-speed motor car |
| CN106523570A (en) * | 2016-12-30 | 2017-03-22 | 江门市业成轨道设备有限公司 | Transverse oil-pressure shock absorber system for high-speed motor car |
| CN108306440A (en) * | 2018-03-26 | 2018-07-20 | 合肥恒大江海泵业股份有限公司 | A kind of sealing structure of shaft end and encapsulating method of dry-type submersible motor |
-
2014
- 2014-12-12 CN CN201420786335.6U patent/CN204327839U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523571A (en) * | 2016-12-30 | 2017-03-22 | 珠海市业成轨道交通设备科技有限公司 | Oil-pressure gasbag shock absorber system for high-speed motor car |
| CN106523570A (en) * | 2016-12-30 | 2017-03-22 | 江门市业成轨道设备有限公司 | Transverse oil-pressure shock absorber system for high-speed motor car |
| CN108306440A (en) * | 2018-03-26 | 2018-07-20 | 合肥恒大江海泵业股份有限公司 | A kind of sealing structure of shaft end and encapsulating method of dry-type submersible motor |
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