CN104214254B - Brake cylinder piston assembly for railway vehicle - Google Patents
Brake cylinder piston assembly for railway vehicle Download PDFInfo
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- CN104214254B CN104214254B CN201410428510.9A CN201410428510A CN104214254B CN 104214254 B CN104214254 B CN 104214254B CN 201410428510 A CN201410428510 A CN 201410428510A CN 104214254 B CN104214254 B CN 104214254B
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- piston
- leather cup
- checking cylinder
- rolling stock
- cylinder piston
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Abstract
The invention discloses a brake cylinder piston assembly for a railway vehicle. The brake cylinder piston assembly for the railway vehicle comprises a piston and a piston rod connected with the piston, wherein a mounting ring groove is formed in the piston; a Y-shaped leather cup is arranged in the mounting ring groove; a supporting ring is arranged on the end surface of the piston; the edge part of the supporting ring is bent to one side of the Y-shaped leather cup to form a bending part; the bending part is arranged between two lips of the Y-shaped leather cup to support the Y-shaped leather cup. Due to the design of additionally arranging the supporting ring on the piston, the supporting ring acts between the two lips of the Y-shaped leather cup to support the Y-shaped leather cup, so that the Y-shaped leather cup cannot axially move so as not to be reversely extruded, and the problem that a piston leather cup is disengaged or turned over in the movement process of a brake cylinder is solved.
Description
Technical field
The invention belongs to rolling stock parts technical field, more particularly to a kind of rolling stock checking cylinder piston set
Into.
Background technology
Existing rolling stock checking cylinder piston constitutes structure as shown in figure 1, which is generally deposited in utilization and maintenance process
In problems with：
1st, existing piston adopts HT200：Its heavier mass, the resistance of motion are big, and life-time service easily produces corrosion and dirty
Dye oils and fatss.
2nd, the piston cup of checking cylinder occurs abjection phenomenon once in a while：The installation of checking cylinder piston Y type leather cups adopts inserted,
Without fixing device, leather cup is firm with the installation of piston, not normotopia, simultaneously as individual vehicle seal type brake cylinder piston
Be present material or quality problems in leather cup, or in the low-temperature condition lower piston leather cup elasticity sharp-decay of northern severe cold season, living
It is easy to deviate from seal type brake cylinder piston cup in plug moving process, is formed " turning over bowl ", so as to affect braking ability.
3rd, leather cup high temperature resistant, oil resistant are poor：Existing leather cup adopts nitrile rubber, the use of temperature range is -50 DEG C～+70 DEG C,
But when vehicle carries out defrosting operation, defrozing silo temperature is improved, causes leather cup to add to improve defrosting effect by operating personnel in violation of rules and regulations
Speed is aging, affects sealing property；Additionally, leather cup because dissolve 89D fat cause weight increase affect sealing effectiveness situation also when
There is generation.
The content of the invention
It is an object of the invention to：For above-mentioned problem, there is provided one kind can effectively prevent checking cylinder in motion
The rolling stock for causing leather cup abjection or turning over bowl is constituted with checking cylinder piston.
The technical scheme is that what is be achieved in that：A kind of rolling stock with checking cylinder piston constitute, including piston with
And the piston rod being connected with piston, installation annular groove is provided with the piston, Y type skins is provided with the installation annular groove
Bowl, it is characterised in that：The piston end surface is provided with support ring, the support ring marginal portion is bent to Y type leather cups side
Kink is formed, the kink is placed between two lips of Y type leather cups and withstands Y type leather cups.
Rolling stock of the present invention is constituted with checking cylinder piston, and which is circumferentially equal on the kink of the support ring
It is furnished with some gas ports.
Rolling stock of the present invention is constituted with checking cylinder piston, and its described piston is made using aluminum alloy materials, institute
State piston rod piston outboard end corresponding with piston junction and be provided with rib raised vertically, on the inside of the piston
End face is provided with reinforcement.
Rolling stock of the present invention is constituted with checking cylinder piston, and its described Y types leather cup is made using fluorosioloxane rubber.
Rolling stock of the present invention is constituted with checking cylinder piston, and it is thick which accompanies at least one of which in the fluorosioloxane rubber
Spend the nylon or woven dacron for 0.18～0.23mm.
The present invention supports ring design by increasing on piston, and support ring to be acted on and withstand Y types between two lips of Y type leather cups
Leather cup, prevents Y types leather cup from axial float, so as to be reversed extrusion, with the work for preventing checking cylinder from causing in motion
A bowl problem is turned in the abjection of plug leather cup.
Description of the drawings
Fig. 1 is the structural representation of existing checking cylinder piston composition.
Fig. 2 is the structural representation of the present invention.
Reference：1 is piston, and 2 is piston rod, and 3 is Y type leather cups, and 4 is support ring, and 5 is kink, and 6 is gas port, 7
For rib, 8 is reinforcement.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is not used to only to explain the present invention
Limit the present invention.
As shown in Fig. 2 a kind of rolling stock is constituted with checking cylinder piston, the piston being connected including piston 1 and with piston 1
Bar 2, is provided with installation annular groove on the piston 1, is provided with Y types leather cup 3, at 1 end of the piston in the installation annular groove
Face is provided with support ring 4, and the support ring is removably fixedly connected on piston by screw, 4 edge of the support ring
Part is bent to form kink 5 to 3 side of Y types leather cup, and the kink 5 is placed in Y types leather cup 3 between two lips of Y types leather cup 3
Withstand, the support ring can adopt aluminium alloy or other nonmetallic materials to support.Ring design is supported by increasing on piston,
Pushing out ring to be acted on and withstand Y type leather cups between two lips of Y type leather cups, prevents Y types leather cup from axial float, so as to be reversed
Extrusion, to prevent the piston cup that checking cylinder is caused in motion from deviating from or turn over a bowl problem；In the kink 5 of the support ring 4
On be uniformly distributed with some gas ports 6 along the circumference, to act on the recess of Y type leather cups using pressure air by gas port, strut Y types
The lips of leather cup so as to which epipharynx is brought into close contact with piston, it is ensured that the insensitivity of checking cylinder, its outer lip are tight with the braking inside wall of cylinder
Closely connected conjunction, it is ensured that the sealing of checking cylinder.
Wherein, the piston 2 is made using aluminum alloy materials, as piston is after using aluminum alloy materials, its hardness meeting
Decrease, in finished product detection test, phenomenon of rupture easily occur in piston and piston rod junction, therefore, the piston rod 2 with
Corresponding 1 outboard end of piston in 1 junction of piston is provided with rib 7 raised vertically, sets in 1 inner side end of the piston
Reinforcement 8 is equipped with, so that piston is made up because of the problem reduced using hardness after aluminum alloy materials so as to fully meet wanting for test
Ask, and the end face of rib is higher than the outer face of support ring, to avoid support ring outer face from contacting with the braking inside wall of cylinder.
In the present embodiment, the piston adopts 4032 aluminum alloy materials, and which has the characteristics of lightweight, intensity is high.Adopt
With aluminum alloy materials, the piston body weight of 12 inch is 6.15kg, can reduce about 10kg compared with cast-iron piston body, so as to reduce piston
For guidance tape, the normal pressure of casing wall, the resistance of piston operation is reduced, improve the durability of guidance tape；And piston weight is big
Amplitude reduction, can also facilitate assembling, the dismounting of production scene, mitigate labor strength, in addition, aluminum alloy material will not be as casting
Ferrum produces corrosion and pollutes oils and fatss.As the tensile strength of 4032 aluminum alloy materials is 370 MPa, and the cast iron for using at present is lived
Tensile strength 200MPa of plug, compared with former cast iron quality, tensile strength at least improves 70%, and piston increases after optimizing
The wall thickness of relative weak part, thus the intensity surplus of all-aluminium piston is larger, and also there is flow harden phenomenon in aluminium alloy,
Hardness slightly reduces to adversely affect the use of piston.
Wherein, the Y types leather cup 3 is made using fluorosioloxane rubber, accompanies at least one of which thickness and be in the fluorosioloxane rubber
The nylon or woven dacron of 0.18～0.23mm.Using the cloth inserted technical scheme of fluorosioloxane rubber, it is possible to increase high temperature resistant and oil resistivity.
Existing leather cup rubber physical performance contrasts as shown in the table with fluorosioloxane rubber performance indications：
| Project | Unit | Standard is required | Fluorine silicon index |
| 1st, hardness（Shore A） | Degree | 75±5 | 75±5 |
| 2nd, tensile strength, >= | MPa | 8 | 6.5 |
| 3rd, elongation at break, >= | % | 150 | 220 |
| 4th, setafter break ,≤ | % | 6 | 6 |
| 5th, compress cold-resistant coefficient（20%, -50,）≥ | 0.2 | 0.4 | |
| 6th, brittleness temperature ,≤ | ℃ | -55 | -60 |
| 7th, compression set（100℃X24h）≤ | % | 45 | 20 |
| 8th, oil suction weightening：Checking cylinder fat（70℃X24h）No. 48 or 89D fat | % | 0-10 | 0-10 |
| 9th, hot air aging（100℃X24h）Percentage elongation is reduced ,≤ | % | 30 | 20 |
| 10th, tearing toughness, >= | kN/m | 20 | 20 |
| 11st, impact elasticity, >= | % | 35 | 35 |
| 12nd, resistance to 200 DEG C of high temperature ageings | % | — | 25 |
Fluorosioloxane rubber is better than nitrile rubber in the index of oil resistivity, resistance to air aging performance, and special low temperature can be in -55 DEG C of bars
Life-time service under part, additionally, the curing temperature of fluorosioloxane rubber is far above nitrile rubber, high temperature can be made under the conditions of+200 DEG C for a long time
With.To improve the tensile strength of fluorosioloxane rubber, 0.18～0.23mm nylon or woven dacron are pressed from both sides using fluorosioloxane rubber, folder cloth is later
Fluorosioloxane rubber tensile strength is required higher than existing standard up to more than 10Mpa.
The present invention supports ring design to further increase the maintainable of checking cylinder and use by light-weight design, increase
Reliability, and leather cup can meet -50 DEG C～200 DEG C use environments requirements, with more preferable oil resistivity and weatherability.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (4)
1. a kind of rolling stock is constituted with checking cylinder piston, including piston（1）And and piston（1）The piston rod of connection（2）,
The piston（1）On be provided with installation annular groove, it is described installation annular groove in be provided with Y type leather cups（3）, it is characterised in that：Institute
State piston（1）End face is provided with support ring（4）, the support ring（4）Marginal portion is to Y type leather cups（3）Side is bent to form curved
Folding part（5）, the kink（5）It is placed in Y type leather cups（3）Two lips between by Y type leather cups（3）Withstand, in the support ring（4）
Kink（5）On be uniformly distributed with some gas ports along the circumference（6）.
2. rolling stock according to claim 1 is constituted with checking cylinder piston, it is characterised in that：The piston（1）Using
Aluminum alloy materials are made, the piston rod（2）With piston（1）The corresponding piston in junction（1）Outboard end is provided with vertically
Raised rib（7）, in the piston（1）Inner side end is provided with reinforcement（8）.
3. rolling stock according to claim 2 is constituted with checking cylinder piston, it is characterised in that：The Y types leather cup（3）Adopt
Made with fluorosioloxane rubber.
4. rolling stock according to claim 3 is constituted with checking cylinder piston, it is characterised in that：In the fluorosioloxane rubber
Accompany nylon or woven dacron that at least one of which thickness is 0.18～0.23mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428510.9A CN104214254B (en) | 2014-08-28 | 2014-08-28 | Brake cylinder piston assembly for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428510.9A CN104214254B (en) | 2014-08-28 | 2014-08-28 | Brake cylinder piston assembly for railway vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104214254A CN104214254A (en) | 2014-12-17 |
| CN104214254B true CN104214254B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410428510.9A Active CN104214254B (en) | 2014-08-28 | 2014-08-28 | Brake cylinder piston assembly for railway vehicle |
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| CN (1) | CN104214254B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114485A (en) * | 2015-09-11 | 2015-12-02 | 安徽江淮汽车股份有限公司 | Clutch booster assembly for automobile |
| CN109114065B (en) * | 2018-08-22 | 2020-10-27 | 天津大学 | Sealing device for brake piston of quick press |
| CN109737920A (en) * | 2019-01-07 | 2019-05-10 | 太原理工大学 | Hydrostatic level based on double fast-response probes |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204025460U (en) * | 2014-08-28 | 2014-12-17 | 南车眉山车辆有限公司 | Master cylinder piston composition for a kind of railway vehicle |
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| GB1269571A (en) * | 1969-02-05 | 1972-04-06 | Crane Packing Ltd | Seal assemblies |
| SU998181A1 (en) * | 1981-09-09 | 1983-02-23 | Московский Завод Машин И Приборов Для Железнодорожного Транспорта | Railway vehicle brake cylinder |
| CN2237758Y (en) * | 1996-01-30 | 1996-10-16 | 张利 | U-combined sealing ring |
| DE10019641A1 (en) * | 2000-04-19 | 2001-11-08 | Freudenberg Carl Fa | Sealing arrangement |
| US6651429B2 (en) * | 2000-08-14 | 2003-11-25 | Bosch Braking Systems Co., Ltd. | Master cylinder |
| CN2760342Y (en) * | 2004-12-13 | 2006-02-22 | 天津渤天化工有限责任公司 | Pressure compensation type hydraulic cylinder sealing device |
| CN201202752Y (en) * | 2008-02-26 | 2009-03-04 | 南车眉山车辆有限公司 | Rotary pressing seal type brake cylinder |
| CN102278479A (en) * | 2011-05-17 | 2011-12-14 | 成都飞机工业（集团）有限责任公司 | Y-shaped sealing unit |
| CN102606653B (en) * | 2011-12-22 | 2013-11-20 | 南车二七车辆有限公司 | Railway vehicle braking cylinder piston assembly |
| CN202531696U (en) * | 2012-05-14 | 2012-11-14 | 嘉兴盛鼎机械有限公司 | Piston component |
| CN202756495U (en) * | 2012-05-31 | 2013-02-27 | 昆明中铁大型养路机械集团有限公司 | Brake cylinder, vehicle provided with brake cylinder, railway car provided with brake cylinder and railway maintenance machine provided with brake cylinder |
| WO2014044266A1 (en) * | 2012-09-19 | 2014-03-27 | Schaeffler Technologies AG & Co. KG | Seal arrangement |
| CN103044928B (en) * | 2012-11-25 | 2016-05-11 | 合肥宏杰新材料科技有限公司 | A kind of automobile Y-shaped ring sizing material and preparation method thereof |
| CN103758723A (en) * | 2013-12-27 | 2014-04-30 | 芜湖盛力科技股份有限公司 | Air pump of engineering machinery braking system |
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- 2014-08-28 CN CN201410428510.9A patent/CN104214254B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204025460U (en) * | 2014-08-28 | 2014-12-17 | 南车眉山车辆有限公司 | Master cylinder piston composition for a kind of railway vehicle |
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| CN104214254A (en) | 2014-12-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 620032, Sichuan, Meishan province Dongpo Chongren town CSR Meishan Vehicle Co., Ltd. Applicant after: CRRC MEISHAN CO., LTD. Address before: 620032, Sichuan, Meishan province Dongpo Chongren town CSR Meishan Vehicle Co., Ltd. Applicant before: Nanche Meishan Rolling Stock Co., Ltd. |
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