CN207864510U - A kind of high speed motor car oil-pressure damper pressure cylinder open-celled structure - Google Patents
A kind of high speed motor car oil-pressure damper pressure cylinder open-celled structure Download PDFInfo
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- CN207864510U CN207864510U CN201721911164.5U CN201721911164U CN207864510U CN 207864510 U CN207864510 U CN 207864510U CN 201721911164 U CN201721911164 U CN 201721911164U CN 207864510 U CN207864510 U CN 207864510U
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Abstract
The utility model is related to a kind of high speed motor car oil-pressure damper pressure cylinder open-celled structures, include mainly：Pressure cylinder epicoele through-hole and pressure cylinder cavity of resorption through-hole, wherein, the pressure cylinder epicoele through-hole is set to one end of the pressure cylinder tube wall, the pressure cylinder cavity of resorption through-hole is set to the other end of the pressure cylinder tube wall, for avoiding the piston of the oil-pressure damper in stretching and compression, because the trepanning on the piston causes compression damping power more than the influence for stretching damping force.The utility model by it is anti-snake oil-pressure damper pressure cylinder epicoele and cavity of resorption trepanning, can solve the problems, such as to punch two-way intercommunication on piston, meet Compression and Expansion damping force symmetry requirement.
Description
Technical field
The utility model belongs to technical field of hydraulic elements, is related to a kind of high speed motor car oil-pressure damper pressure cylinder trepanning
Structure more particularly to a kind of pressure cylinder open-celled structure for the anti-snake movement oil pressure shock absorber of rail vehicle.
Background technology
It is key components and parts on train that middle national standard, which is moved on 250 bullet trains with anti-snake oil-pressure damper, and anti-snake subtracts
Device requirement shake in extremely low speed, generates big damping force to inhibit the hunting of bogie and car body.Damper is required extremely low
When fast speed of related movement, fluid flow is small, and damper is required to reach big damping, it is necessary to by minimum throttle hole come
It realizes.The anti-snake oil-pressure damper of Two-way Cycle since stretching travel fluid flow is the fluid of piston rod and pressure cylinder annular groove,
And compression travel is entire pressure cylinder fluid flow, if punched on piston, stretching travel and compression travel trepanning are intercommunications
, lead to the phenomenon that compression damping power is more than stretching damping force occur, Compression and Expansion damping force symmetry requirement cannot be met.And
This problem also becomes the protrusion difficult point in the anti-snake oil-pressure damper structure design of Two-way Cycle.
Utility model content
The utility model is in view of the deficiencies of the prior art, it is proposed that a kind of high speed motor car oil-pressure damper pressure cylinder trepanning
Structure, by it is anti-snake oil-pressure damper pressure cylinder epicoele and cavity of resorption trepanning, can solve to punch two-way intercommunication on piston
The problem of, meet Compression and Expansion damping force symmetry requirement.
In order to solve the above technical problems, the technical solution that the utility model is taken is：
The utility model proposes a kind of high speed motor car oil-pressure damper pressure cylinder open-celled structures, including：On pressure cylinder
Chamber through-hole and pressure cylinder cavity of resorption through-hole, wherein the pressure cylinder epicoele through-hole is set to one end of the pressure cylinder tube wall, described
Pressure cylinder cavity of resorption through-hole is set to the other end of the pressure cylinder tube wall, for avoiding the piston of the oil-pressure damper from stretching
When with compression, because the trepanning on the piston causes compression damping power more than the influence for stretching damping force.
Further, the pressure cylinder epicoele through-hole and pressure cylinder cavity of resorption through-hole number are multiple, are symmetricly set on institute
State the both ends of pressure cylinder tube wall.
Further, the aperture of the pressure cylinder epicoele through-hole and the aperture of the pressure cylinder cavity of resorption through-hole are unequal.
Further, when stretching, pressure cylinder epicoele fluid throttles the piston by the pressure cylinder epicoele through-hole, production
It is raw to stretch damping force.
Further, in compression, pressure cylinder cavity of resorption fluid throttles the piston by the pressure cylinder cavity of resorption through-hole, production
Raw compression damping power.
The beneficial effects of the utility model include at least：High speed motor car described in the utility model oil-pressure damper pressure
Cylinder open-celled structure, by it is anti-snake oil-pressure damper pressure cylinder epicoele and cavity of resorption trepanning, solve Two-way Cycle it is anti-snake subtract
Throttle orifice Compression and Expansion intercommunication during device tune valve of shaking influences, and leads to the asymmetric problem of Compression and Expansion damping force.
Description of the drawings
Fig. 1 is existing tune valve cell schematic diagram.
Fig. 2 is schematic diagram of the existing tune valve cell in damper.
Fig. 3 is the utility model open-celled structure schematic diagram.
Wherein, 1, piston rod；Piston trepanning 101；2, pilot unit；3, pressure cylinder；4, bottom valve unit；5, piston unit；
6, pressure cylinder epicoele through-hole；7, pressure cylinder cavity of resorption through-hole.
Specific implementation mode
In order to enable those skilled in the art to better understand the technical solutions of the present invention, below in conjunction with specific implementation
The utility model is described in further detail for example.The embodiments described below is exemplary, and is only used for explaining this practicality
It is novel, and should not be understood as limiting the present invention.Particular technique or condition are not specified in embodiment, according to this field
Technology or condition described in interior document are carried out according to product description.
Fig. 1 is existing tune valve cell schematic diagram, and Fig. 2 is schematic diagram of the existing tune valve cell in damper, reference
Shown in Fig. 1 and 2, the anti-snake oil-pressure damper of Two-way Cycle is piston rod and pressure cylinder annular groove due to stretching travel fluid flow
Fluid, and compression travel is entire pressure cylinder fluid flow, if punched on piston, stretching travel and compression travel trepanning are
Intercommunication, lead to the phenomenon that compression damping power is more than stretching damping force occur, Compression and Expansion damping force symmetry cannot be met and wanted
It asks.
Embodiment according to the present utility model, in order to solve the above technical problems, the utility model passes through in anti-snake oil pressure
The epicoele of damper pressure cylinder and cavity of resorption trepanning can solve the problems, such as to punch two-way intercommunication on piston.
Embodiment according to the present utility model, Fig. 3 is the utility model open-celled structure schematic diagram, with reference to shown in Fig. 3, this reality
With novel high speed motor car oil-pressure damper pressure cylinder open-celled structure, including：Pressure cylinder epicoele through-hole and pressure cylinder cavity of resorption
Through-hole, wherein the pressure cylinder epicoele through-hole is set to one end of the pressure cylinder tube wall, the pressure cylinder cavity of resorption through-hole setting
In the other end of the pressure cylinder tube wall, for avoiding the piston of the oil-pressure damper in stretching and compression, because of the work
Trepanning beyond the Great Wall causes compression damping power to be more than the influence for stretching damping force.
Some embodiments according to the present utility model, the pressure cylinder epicoele through-hole and pressure cylinder cavity of resorption through-hole number are more
It is a, it is symmetricly set on the both ends of the pressure cylinder tube wall.
Some embodiments according to the present utility model, the aperture of the pressure cylinder epicoele through-hole are logical with the pressure cylinder cavity of resorption
The aperture in hole is unequal.Due to the difference of stretching travel and compression travel fluid flow, by opening different holes in pressure cylinder tube wall
The through-hole of diameter is realized and stretches damping force and the symmetrical problem of compression damping power.
Some embodiments according to the present utility model, for the piston when stretching, pressure cylinder epicoele fluid passes through the pressure
Power cylinder epicoele through-hole throttle, generate stretch damping force, and pressure cylinder epicoele through-hole compression process damping force not will produce it is any
It influences.
Some embodiments according to the present utility model, for the piston in compression, pressure cylinder cavity of resorption fluid passes through the pressure
Power cylinder cavity of resorption through-hole throttle, generate compression damping power, and pressure cylinder cavity of resorption through-hole drawing process damping force not will produce it is any
It influences.
It is understood that anti-snake oil-pressure damper, in pole low-speed motion, damping force is fluid by pressure cylinder
What the through-hole rubbing action of cavity of resorption generated, precision, circularity and the endoporus finish facedown hunting Damper low speed song of through-hole
Line has a direct impact.
Inventor has found, according to high speed motor car described in the utility model oil-pressure damper pressure cylinder open-celled structure, leads to
The epicoele in anti-snake oil-pressure damper pressure cylinder and cavity of resorption trepanning are crossed, during solving Two-way Cycle anti-hunting damper holder tune valve
Throttle orifice Compression and Expansion intercommunication influences, and leads to the asymmetric problem of Compression and Expansion damping force.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Identical embodiment or example need not be directed to by stating.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiments or example.In addition, without conflicting with each other, this field
Technical staff can carry out the feature of different embodiments or examples described in this specification and different embodiments or examples
In conjunction with and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments, meanwhile, for those of ordinary skill in the art, foundation
The thought of the application, there will be changes in the specific implementation manner and application range.
Claims (5)
1. a kind of high speed motor car oil-pressure damper pressure cylinder open-celled structure, which is characterized in that including：Pressure cylinder epicoele through-hole and
Pressure cylinder cavity of resorption through-hole, wherein the pressure cylinder epicoele through-hole is set to one end of the pressure cylinder tube wall, under the pressure cylinder
Chamber through-hole is set to the other end of the pressure cylinder tube wall, for avoiding the piston of the oil-pressure damper from stretching and compressing
When, because the trepanning on the piston causes compression damping power more than the influence for stretching damping force.
2. high speed motor car according to claim 1 oil-pressure damper pressure cylinder open-celled structure, which is characterized in that the pressure
Power cylinder epicoele through-hole and pressure cylinder cavity of resorption through-hole number are multiple, are symmetricly set on the both ends of the pressure cylinder tube wall.
3. high speed motor car according to claim 2 oil-pressure damper pressure cylinder open-celled structure, which is characterized in that the pressure
The aperture and the aperture of the pressure cylinder cavity of resorption through-hole of power cylinder epicoele through-hole are unequal.
4. high speed motor car according to claim 1 oil-pressure damper pressure cylinder open-celled structure, which is characterized in that the work
When stretching, pressure cylinder epicoele fluid throttles plug by the pressure cylinder epicoele through-hole, generates and stretches damping force.
5. high speed motor car according to claim 1 oil-pressure damper pressure cylinder open-celled structure, which is characterized in that the work
In compression, pressure cylinder cavity of resorption fluid throttles plug by the pressure cylinder cavity of resorption through-hole, generates compression damping power.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721911164.5U CN207864510U (en) | 2017-12-30 | 2017-12-30 | A kind of high speed motor car oil-pressure damper pressure cylinder open-celled structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721911164.5U CN207864510U (en) | 2017-12-30 | 2017-12-30 | A kind of high speed motor car oil-pressure damper pressure cylinder open-celled structure |
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| CN207864510U true CN207864510U (en) | 2018-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167369A (en) * | 2017-12-30 | 2018-06-15 | 珠海市业成轨道交通设备科技有限公司 | A kind of high speed motor car oil-pressure damper pressure cylinder open-celled structure |
-
2017
- 2017-12-30 CN CN201721911164.5U patent/CN207864510U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167369A (en) * | 2017-12-30 | 2018-06-15 | 珠海市业成轨道交通设备科技有限公司 | A kind of high speed motor car oil-pressure damper pressure cylinder open-celled structure |
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