Servo hydraulic cylinder static pressure seal guiding sleeve with double cross-shaped cavities

A servo hydraulic cylinder and static pressure sealing technology, which is applied in the direction of fluid pressure actuating devices, can solve the problems of low working stability, short working life, and serious effects, and achieve the effects of reducing heat generation rate, improving life, and reducing vibration

Pending Publication Date: 2019-07-02
HARBIN UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In view of the lack of existing hydraulic cylinder sealing technology, the friction is large, the working life is short, the working stability is low, and the "hot oil carrying" effect is serious.

Method used

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  • Servo hydraulic cylinder static pressure seal guiding sleeve with double cross-shaped cavities
  • Servo hydraulic cylinder static pressure seal guiding sleeve with double cross-shaped cavities
  • Servo hydraulic cylinder static pressure seal guiding sleeve with double cross-shaped cavities

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention is described below through specific embodiments shown in the accompanying drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0018] The structural composition of the present invention is as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 shown. The present invention is a servo hydraulic cylinder hydrostatic seal guide sleeve with double cross-shaped cavity, which is characterized in that it includes a connecting hole (1), a guide sleeve body (2), a cross-shaped auxiliary oil chamber (3), and a cross-shaped main oil chamber (4), oil unloading ta...

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Abstract

The invention discloses a servo hydraulic cylinder static pressure seal guiding sleeve with double cross-shaped cavities. The servo hydraulic cylinder static pressure seal guiding sleeve comprises a guiding sleeve body, the double cross-shaped oil cavities, an oil unloading groove and a dustproof groove. A hydraulic cylinder matched with the servo hydraulic cylinder static pressure seal guiding sleeve structurally comprises a cylinder barrel, a piston rod and the like. Due to the rapid reciprocating motion of the piston rod of the hydraulic cylinder, the number of shearing times of hydraulic oil in an oil cavity is too large, heating of the hydraulic oil is caused, and the phenomenon is called as hot oil carrying. To avoid the phenomenon, the double cross-shaped oil cavities are adopted inthe servo hydraulic cylinder static pressure seal guiding sleeve, the number of shearing times of hydraulic oil in the oil cavities is reduced, and little heat is generated; and the material of the guiding sleeve is a high-hardness aluminum alloy good in heat dissipation, the weight of the hydraulic cylinder is reduced, the heat dissipation speed is increased, and the cost of the hydraulic cylinder is reduced.

Description

technical field [0001] The invention belongs to the professional field of hydraulic transmission. It is a static pressure seal guide sleeve of a hydraulic cylinder; by changing the structure of the guide sleeve, the sealing performance of the hydraulic cylinder is improved, and the static pressure seal is used, which greatly reduces the sealing ring between the piston rod and the guide sleeve. The generated friction force reduces the vibration generated by the piston rod when it is working, fully reduces the harm caused by hot oil, and is suitable for the technical field of hydraulic cylinders. Background technique [0002] At present, most of the seals used in hydraulic cylinders are sealed by seals, but with the continuous development of hydraulic cylinders, the disadvantages of seals are constantly revealed: the frictional resistance between the piston rod and the guide sleeve increases, and the life of the seal ring is short , Poor anti-eccentric load performance, avera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14
CPCF15B15/14F15B15/1471
Inventor 邵俊鹏徐龙飞孙桂涛
Owner HARBIN UNIV OF SCI & TECH
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