A guide sleeve for a hydraulic cylinder

Abstract

The invention discloses a guide sleeve of a hydraulic oil cylinder, which comprises a guide sleeve body, a fixed plate, a pipe sleeve and a No. 1 piston rod. A guide hole is provided inside, and a plurality of oil storage tanks are provided on the inner wall of the guide hole, and a fixed plate is welded at one end of the guide sleeve body. The present invention provides an oil storage tank and an oil suction tank inside the guide sleeve, and a rubber ring inside the sleeve. Ensure that the excess oil can be kept in the guide sleeve as much as possible, which can play a certain role in preventing leakage; by setting a movable sleeve, with the help of cooling holes and fins, the gap between the piston rod and the guide sleeve The heat generated by friction can be quickly discharged, and the dust-proof net is set in the heat dissipation hole, and two opposite oil suction grooves are set, and at the same time, it can also avoid the internal oil leakage and reduce the lubricating oil content; the whole new guide sleeve is easy to disassemble and protect Good performance and higher practicability.

Description

technical field [0001] The invention relates to the technical field of guide sleeves, in particular to a guide sleeve of a hydraulic oil cylinder. Background technique [0002] The guide sleeve of the hydraulic cylinder plays the role of supporting and ensuring the coaxiality of the piston rod and the cylinder barrel. When the hydraulic cylinder rod is extended, it makes the surface of the hydraulic cylinder and the cylinder barrel contact. The longer the stroke of the hydraulic cylinder, the more the guide sleeve Long, at the same time, also provides a support for the oil seal of the cylinder port. [0003] However, the structure of the guide sleeve used in the existing hydraulic oil cylinder is too simple. After a long period of friction between the guide sleeve and the piston, the sealing performance is reduced, and the lubricating oil is easy to leak. At the same time, the heat generated by the friction cannot be discharged in time, which is easy to cause the The surfac...

AI Technical Summary

Problems solved by technology

[0003] However, the structure of the guide sleeve used in the existing hydraulic oil cylinder is too simple. After a long period of friction between the guide sleeve and the piston, the sealing performance is reduced, and the lubricating oil is easy to leak. At the same time, the heat generated by the friction cannot be discharged in time, which is easy to cause the The surface and the inner hole of the guide sleeve are worn, which affects the performance. In addition, the overall disassembly is inconvenient, and the noise generated by the friction between the guide sleeve and the piston rod cannot be eliminated.

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