CN101029687A - Zero-leakage hydraulic load-equalizing cylinder for freight train - Google Patents
Zero-leakage hydraulic load-equalizing cylinder for freight train Download PDFInfo
- Publication number
- CN101029687A CN101029687A CN 200710034278 CN200710034278A CN101029687A CN 101029687 A CN101029687 A CN 101029687A CN 200710034278 CN200710034278 CN 200710034278 CN 200710034278 A CN200710034278 A CN 200710034278A CN 101029687 A CN101029687 A CN 101029687A
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- Prior art keywords
- cylinder
- plunger
- rubber diaphragm
- zero
- cylinder body
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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.)
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- 239000007787 solid Substances 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention relates to a kind of hydraulic even-load cylinder, especially to a zero-leakage kind of that for lorry. It comprised cylinder-body, rubber diaphragm and plunger, and characterized in: the bottom of the robber diaphragm closely aligned with the plunger and the top fix-jointed the cylinder body as one solid, thus, cylinder body and rubber diaphragm formed a hydraulic storage media work sealed cavity. This invention will mainly used on lorry.
Description
Technical field
The present invention relates to a kind of hydraulic load-equalizing cylinder, relate in particular to the Zero-leakage hydraulic load-equalizing cylinder that a kind of railway freight-car is used.
Background technique
Between two oil hydraulic cylinders, with connecting together connecting tube, because two in-cylinder pressures are identical, cylinder diameter is identical, and then the thrust of two cylinders is identical, the oil hydraulic cylinder that partners and all carry mutually.Traditional equal carrier fluid cylinder pressure, adopt plunger to add the seal ring sealing, although the development of modern hydraulic pressure manufacturing technology, made the leakage of hydraulic medium between reciprocating plunger and seal ring very little, can satisfy engineering machinery and the need of work of the railway freight-car that the special messenger safeguards is arranged, but can not satisfy the usage requirement of the railway general purpose freight car of unmanned maintenance maintenance at ordinary times.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic load-equalizing cylinder that the position does not have relative movement, nothing abrasion, do not have freedom from repairs in leakage, nominal operation time limit that seals, to overcome above-mentioned deficiency.
For achieving the above object, technical solution of the present invention is: the plunger and the rubber diaphragm middle part of hydraulic load-equalizing cylinder are fitted tightly, the rubber diaphragm periphery fixes as one with cylinder body, constitute the seal operation chamber of storing hydraulic medium between cylinder body and the rubber diaphragm, the hydraulic medium of storing in the chamber promotes plunger by rubber diaphragm and pumps.
The present invention includes cylinder body, rubber diaphragm and plunger, it is characterized in that: the lower end of described rubber form 2 and plunger 3 fit tightly, and upper end and cylinder body 1 fix as one, and constitute the seal operation chamber 4 of storing hydraulic medium between cylinder body 1 and the rubber diaphragm 2.
Advantage of the present invention is: eliminated friction, abrasion and the possible leakage of plunger in fore and aft motion and between seal ring of conventional hydraulic load-equalizing cylinder, make load-equalizing cylinder not have friction, do not have abrasion, not have leakage all carrying in the action sealing position, reliable effect, need not keep in repair at ordinary times, can satisfy the railway freight-car usage requirement.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Among the figure: 1-cylinder body, 2-rubber diaphragm, 3-plunger, 4-seal operation chamber.
Embodiment
Below in conjunction with accompanying drawing the present invention and embodiment thereof are described in further detail.
Referring to accompanying drawing, the present invention includes cylinder body, rubber diaphragm and plunger, it is characterized in that: the lower end of described rubber diaphragm 2 and plunger 3 fit tightly, and upper end and cylinder body 1 fix as one, and constitute the seal operation chamber 4 of storing hydraulic medium between cylinder body 1 and the rubber diaphragm 2.
The volume size of the hydraulic medium in the seal operation chamber 4 changes and promotes plungers 3 by rubber diaphragm 2 and do upper and lower to-and-fro motion and adapt with the turnup distortion of rubber diaphragm 2.Friction between no conventional hydraulic cylinder plug and the seal ring, abrasion factor, therefore, this oil hydraulic cylinder can be accomplished zero leakage.Its reliable effect does not need repairing at ordinary times, can satisfy the usage requirement of railway freight-car, can promote the use of on railway freight-car.
Claims (1)
1, a kind of zero-leakage hydraulic load-equalizing cylinder for freight train, it comprises cylinder body, rubber diaphragm and plunger, it is characterized in that: the lower end of described rubber diaphragm (2) and plunger (3) fit tightly, the upper end fixes as one with cylinder body (1), constitutes the seal operation chamber (4) of storing hydraulic medium between cylinder body (1) and the rubber diaphragm (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710034278 CN101029687A (en) | 2007-01-18 | 2007-01-18 | Zero-leakage hydraulic load-equalizing cylinder for freight train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710034278 CN101029687A (en) | 2007-01-18 | 2007-01-18 | Zero-leakage hydraulic load-equalizing cylinder for freight train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101029687A true CN101029687A (en) | 2007-09-05 |
Family
ID=38715178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710034278 Pending CN101029687A (en) | 2007-01-18 | 2007-01-18 | Zero-leakage hydraulic load-equalizing cylinder for freight train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101029687A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470569A (en) * | 2013-09-30 | 2013-12-25 | 南通锻压设备股份有限公司 | Short-stroke ultralow speed cylinder |
| CN109883848A (en) * | 2019-03-21 | 2019-06-14 | 东北大学 | The all-hydraulic non-servo creep of rock experimental rig of one kind and method |
-
2007
- 2007-01-18 CN CN 200710034278 patent/CN101029687A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470569A (en) * | 2013-09-30 | 2013-12-25 | 南通锻压设备股份有限公司 | Short-stroke ultralow speed cylinder |
| CN103470569B (en) * | 2013-09-30 | 2016-03-30 | 南通锻压设备股份有限公司 | Short stroke Ultra-Low Speed cylinder |
| CN109883848A (en) * | 2019-03-21 | 2019-06-14 | 东北大学 | The all-hydraulic non-servo creep of rock experimental rig of one kind and method |
| CN109883848B (en) * | 2019-03-21 | 2021-04-02 | 东北大学 | Full-hydraulic non-servo rock creep test device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20081219 Address after: The New District, Jiangxia Economic Development Zone, Hunan, Wuhan Province, China: 430212 Applicant after: China South Locomotive & Rolling Stock Changjiang Vehicle Company Address before: Zhuzhou City, Hunan province Hetang Song Jia Qiao post encoding: 412003 Applicant before: CSR Zhuzhou Rolling Stock Works |
|
| ASS | Succession or assignment of patent right |
Owner name: NANCHE CHANGJING VEHICLE CO., LTD. Free format text: FORMER OWNER: CSR ZHUZHOU ROLLING STOCK WORKS Effective date: 20081219 |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |