Oil pressure damper

Abstract

The invention provides an oil pressure damper. The oil pressure damper comprises an oil storage cylinder. The oil storage cylinder is internally sleeved with a working cylinder. The oil storage cylinder and the working cylinder are filled with hydraulic oil. A guide cover is arranged at one end of the oil storage cylinder and the working cylinder in a sealed mode. A bottom valve base is arranged at the other opposite end of the working cylinder in a sealed mode. The oil storage cylinder and the working cylinder are further filled with gas. The bottom valve base is provided with a bottom valve unit which can circulate the hydraulic oil in the oil storage cylinder and the working cylinder. According to the oil pressure damper, the situation that the size of the oil storage cylinder is increased due to the fact that a compensation air bag is installed is not needed, so that the structure of the hydraulic oil damper is more compact; and in addition, the production cost of the compensation air bag and an installation assembly is reduced, the installation time of the compensation air bag and the installation assembly is saved, and the market competitive advantage is improved.

Description

technical field [0001] The invention belongs to the technical field of oil pressure shock absorbers for rail locomotives, in particular to a non-airbag type oil pressure shock absorber. Background technique [0002] The hydraulic shock absorber is an integral part of the bogie suspension system of railway locomotives, which can effectively prevent the occurrence of dangerous situations such as side swaying, head shaking, and snaking movement of the vehicle, and at the same time reduce the impact between the wheels and rails and improve passenger comfort. comfort. During the working process, the piston unit of the hydraulic shock absorber reciprocates during work, and the volume of the piston rod intruding into the hydraulic oil also changes accordingly, resulting in a change in the pressure of the hydraulic oil. In order to compensate the pressure change of the hydraulic oil caused by the volume change of the piston rod intruding into the hydraulic oil, the oil storage cyli...

AI Technical Summary

Problems solved by technology

The utility model has an oil pressure shock absorber with a compensating air bag. In order to install the compensating air bag smoothly, it is inevitable to increase the size of the oil storage cylinder, resulting in a large volume of the oil pressure shock absorber, an uncompact structure, and high cost; at the same time , the compensation air bag is intruded into the oil, and as time goes by, gas will inevitably leak into the oil, which will not only affect the compensation effect of the oil volume, but also affect the oil shock absorber when the gas is mixed into the oil The linear damping effect of

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