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Piston sealing structure

A technology of sealing structure and piston, which is applied in the direction of fluid pressure actuating device, etc., can solve the problems of large impact, economic loss of customers, and failure of the whole machine to achieve simple sealing structure, wide application conditions and good sealing effect Effect

Inactive Publication Date: 2014-05-07
赵霞
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Problems solved by technology

All kinds of construction machinery are inseparable from the hydraulic cylinder. The performance of the hydraulic cylinder directly affects the performance of the whole machine. Due to the frequent work and large impact of the hydraulic cylinder during work, it is easy to generate seal back pressure. Over time, the piston seal will fail. Vibration and crawling, or even internal leakage, will cause the whole machine to fail to work, bring inconvenience to the construction work, and cause economic losses to customers

Method used

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  • Piston sealing structure

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Embodiment Construction

[0010] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0011] Such as figure 1 Shown, the sealing structure of hydraulic cylinder piston of the present invention is to install sealing device between piston 6 and cylinder barrel 7, promptly on the outer cylindrical surface of piston, and this sealing device is mainly made of support ring 1,5, dirt receiving ring 2, 4. Gray ring 5, piston 6 and cylinder 7 are formed. The support rings 1 and 5 are made of CM20 material, which is a reinforced aromatic polyacrylic phenolic resin braided composite material with graphite additives. The material has strong thermal stability and wear resistance, low friction coefficient, and can withstand extreme conditions. Large lateral force; the anti-pollution rings 2 and 4 adopt the design of KZT, which uses the soft KZT material of the anti-pollution rings to absorb impurities generated during the operation of the hydraulic cylinder to pro...

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Abstract

The invention provides a piston sealing structure, and particularly relates to a piston sealing structure for a hydraulic cylinder. The piston sealing structure is mainly used for the sealing between a piston and a cylinder barrel. The piston sealing structure comprises the piston, the cylinder barrel and a sealing groove, wherein the piston in sliding fit with the cylinder barrel is mounted on a piston rod, and sealing is formed between a sealing element on the piston and the cylinder barrel. A sealing device is composed of a supporting ring, a dirt containing ring, a Gely ring, a dirt containing ring and a supporting ring, starting force is small, guide length is increased, large eccentric loads can be borne, and machining of the matched groove meets the domestic manufacturing technological level better. The sealing structure is simple, low in cost, good in seating effect, capable of bearing the large eccentric loads and wide in application working condition.

Description

Technical field [0001] The present invention designs a piston -density structure that involves a hydraulic cylinder with a piston sealing structure, which is mainly used for sealing between the piston and the cylinder cylinder. Background technique [0002] After 50 years of development, China's construction machinery industry has formed products that can produce 18 categories and 4,500 specifications, which can basically meet important industries that have a considerable scale and vigorous development of vitality in the domestic market.It is widely used in the economic construction of various industries, and plays an important role in the construction of railway, highways, hydropower, mining mining, airports, disaster relief, etc., and play an important role.With the acceleration of my country's economic construction and the stream of national investment, the construction of large and medium -sized infrastructure, the demand for the construction machinery market will increase gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14
Inventor 赵霞
Owner 赵霞
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