Zero-leakage hydraulic load-equalizing cylinder for freight train

A railway freight car, zero leakage technology, applied in the field of hydraulic equal load cylinder, can solve the problems that cannot meet the use requirements of railway general freight cars, achieve the effect of reliable function and meet the use requirements

Inactive Publication Date: 2007-09-05
CRRC YANGTZE CO LTD
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Problems solved by technology

The traditional equal load hydraulic cylinder is sealed with a plunger and a sealing ring. Although the development of modern hydraulic manufacturing technology has made the leakage of the hydraulic medium between the reciprocating plunger and the sealing ring very small, it can meet the needs of construction machinery and special maintenance. The work needs of railway wagons, but it cannot meet the requirements for the use of general-purpose railway wagons that are usually unmaintained

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  • Zero-leakage hydraulic load-equalizing cylinder for freight train

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Embodiment Construction

[0009] The present invention and its specific implementations will be described in further detail below in conjunction with the accompanying drawings.

[0010] Referring to the accompanying drawings, the present invention includes a cylinder body, a rubber diaphragm and a plunger, and is characterized in that: the lower end of the rubber diaphragm 2 is closely attached to the plunger 3, and the upper end is fixedly connected with the cylinder body 1, and the cylinder body 1 and the rubber diaphragm 2 form a sealed working chamber 4 for storing hydraulic media.

[0011] The volume change of the hydraulic medium in the sealed working chamber 4 pushes the plunger 3 to reciprocate up and down through the rubber diaphragm 2 and adapts to the rolling deformation of the rubber diaphragm 2 . There are no friction and wear factors between the plunger and the sealing ring of the traditional hydraulic cylinder, so the hydraulic cylinder can achieve zero leakage. The utility model has re...

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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 [0001] The invention relates to a hydraulic equalizing cylinder, in particular to a zero-leakage hydraulic equalizing cylinder for railway wagons. Background technique [0002] The two hydraulic cylinders are connected together with a connecting pipe. Since the pressure in the two cylinders is the same and the bores are the same, the thrust of the two cylinders is the same, forming a pair of hydraulic cylinders with mutual load balance. The traditional equal load hydraulic cylinder is sealed with a plunger and a sealing ring. Although the development of modern hydraulic manufacturing technology has made the leakage of the hydraulic medium between the reciprocating plunger and the sealing ring very small, it can meet the needs of construction machinery and special maintenance. The work needs of railway wagons, but it cannot meet the use requirements of railway general-purpose wagons that are usually unmanned. Contents of the invention [0003] The object of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J3/06B61F5/02
Inventor 曹阳孙明道石峰刘凤伟
Owner CRRC YANGTZE CO LTD
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