A guide sleeve for a hydraulic cylinder

A hydraulic cylinder and guide sleeve technology, applied in the field of guide sleeves, can solve problems such as easy leakage of lubricating oil, affect performance, and reduce sealing performance, and achieve the effects of avoiding the reduction of lubricating oil content, good protection performance, and strengthening sealing performance

CN110886740BActive Publication Date: 2022-05-03HUNAN HAOTIAN AUTOMOBILE MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-05-03

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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.
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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...

Examples

Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] see Figure 1-5 , the present invention provides a technical solution: a guide sleeve of a hydraulic cylinder, including a guide sleeve body 1, a fixed plate 2, a pipe sleeve 3 and a No. 1 piston rod 4, and the surface of the No. 1 piston rod 4 is covered with a guide sleeve Body 1, the inside of the guide sleeve body 1 in contact with the No. 1 piston rod 4 is provided with a guide hole 11, and the inner wall of the guide hole 11 is provided with a plu...