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Improved single-action telescopic sleeve hydraulic cylinder

A telescopic, hydraulic cylinder technology, applied in the field of hydraulic cylinders, can solve problems such as cylinder deformation, achieve the effects of increasing stiffness, widening sealing performance, and reducing bending moment

Active Publication Date: 2009-09-16
河北华春液压汽配有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an improved single-acting telescopic sleeve hydraulic cylinder to solve the deformation problem of the cylinder

Method used

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  • Improved single-action telescopic sleeve hydraulic cylinder
  • Improved single-action telescopic sleeve hydraulic cylinder

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Embodiment Construction

[0027] The accompanying drawings show embodiments of the present invention, and the present invention will be further described below in conjunction with the embodiments, but not as a limitation of the present invention.

[0028] The overall structure of this embodiment is as shown in the figure, including multi-stage cylinders arranged in the cylinder body 7 and fit together, the connecting plate 3 arranged on the outside of the top of the multi-stage cylinders, and the cylinders arranged between the various stages of cylinders. Limiting member 4, guiding member 5, and sealing member 6; a step-shaped annular convex edge adapted to the outer end surface of the top of the multi-stage cylinder is provided in the inner cavity of the connecting plate 3. When the hydraulic cylinder is in a static state, the outer cylinder 1 The ring-shaped convex edge corresponding to the top end surface of the last stage cylinder 2 and the connection plate 3 is closely fitted.

[0029] The guide m...

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Abstract

The invention belongs to hydraulic cylinders, in particular to an improved single-action telescopic sleeve hydraulic cylinder. The improved single-action telescopic sleeve hydraulic cylinder comprises a multistage cylinder arranged in the cylinder body and matched by assembling, a lug arranged outside the top of the multistage cylinder and a spacing member, a guide member and a sealing member which are arranged among cylinders on each stage; a step-type ring-shaped convex edge adaptive to the end face outside the top of the multistage cylinder is arranged in a cavity of the lug; when the hydraulic cylinder is in a static state, end faces on the top of an outside cylinder and a final-stage cylinder are closely connected and fitted with the ring-shaped convex edge corresponding to the lug. The improved single-action telescopic sleeve hydraulic cylinder solves the problems of easily causing bending deflection of cylinders when the automobiles are overloaded or the traveling cranes incline in the process of lifting in the prior art, and the like and has the advantages of increasing rigidity of cylinders, solving the problem of leakage and overcoming creeping and random ignition, etc.

Description

Technical field [0001] The invention belongs to a hydraulic cylinder, in particular to an improved single-acting telescopic sleeve hydraulic cylinder. Background technique [0002] At present, the front-mounted sleeve hydraulic cylinders for dump trucks are basically long-stroke hydraulic cylinders. During the lifting process, the cylinder barrel is subjected to a large bending moment load; and because of the structural requirements, the whole set of cylinders changes from thick to thin from the outside to the inside, especially the last stage cylinder is more slender and rod-shaped. When the car is overloaded or tilted during the lifting process, it is easy to cause the bending deformation of the cylinder; the frequent phenomenon of crawling and disordered cylinders seriously affects the reputation of domestic cylinders and reduces the market atmosphere. The rapid expansion has seriously restricted the development of my country's oil cylinder industry and greatly weakened t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/16F15B15/20
Inventor 黄培华
Owner 河北华春液压汽配有限公司
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