Axial plunger pump of railway track switching system

Abstract

The invention provides an axial plunger pump of a railway track switching system. The axial plunger pump comprises a pump body, an oil distribution disc, a pump housing, a needle roller bearing, a cylinder body, a plunger component, a transmission shaft, a swashplate structure, screws and an end cover; the pump body is connected with the pump housing by virtue of the screws; the oil distribution disc is arranged between the pump body and the pump housing; the cylinder body is connected with the inside of the pump housing in a support manner by virtue of the needle roller bearing; the plunger component is arranged inside the cylinder body; the cylinder body is connected with the plunger component; one end of the plunger component is connected with the swashplate structure in a pressing manner; the transmission shaft is fixedly connected with the pump body and penetrates through the pump body, the oil distribution disc and the cylinder body; the swash plate structure is connected with the end cover; and the end cover is connected with the pump housing through the screws, wherein the plunger component comprises a plunger body, a plunger head, a sliding shoe, an inner sleeve, an outersleeve, a steel ball, a spring and a return disc. Compared with a traditional technology, the axial plunger pump provided by the invention realizes remolding of a ball head and the sliding shoe and improvement of easily-abraded positions and effectively improves the weaknesses of a traditional design.

Description

technical field [0001] The invention relates to a change of a supporting structure, in particular to an axial piston pump of a railway track switch system. Background technique [0002] At present, the axial piston pump is used in the railway track switch system, which is transformed from the original MCy14-1b axial piston pump. The transmission shaft of the oil pump passes through the bore bearing, oil distribution plate, and splines in the copper cylinder fixed in the pump body. , the pump casing and the needle roller bearing fixed on the inner wall connect the pump body, and the copper cylinder is supported by the needle roller bearing to form an assembly. There are plunger assemblies and swashplate assemblies (composed of swashplates, plane bearings, and pads) in the 7 holes of the cylinder block, which are fixed in the back cover of the oil pump, and the back cover is connected with the pump casing to complete the assembly of the entire oil pump. The transmission shaft...

AI Technical Summary

Problems solved by technology

After more than 1,000,000 times of operation, once the wear in the hole of the sliding shoe reaches ￠7 or more, it will easily fall off from the top of the plunger head under the pulling force of the plunger, which will easily cause the hydraulic system to stop working.

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