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Improved hydraulic cylinder

A technology of hydraulic cylinders and cylinders, applied in the direction of fluid pressure actuation devices, can solve the problems of poor torsional resistance, damage and cracking of oil seals, and achieve the effects of improving torsional resistance, prolonging service life, and good sealing contact.

Inactive Publication Date: 2019-04-05
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing oil seals have poor torsion resistance, and are prone to damage and cracks during the long-term reciprocating movement of the hydraulic cylinder, resulting in the oil seal becoming a vulnerable part of the hydraulic cylinder, which is the bottleneck for extending the maintenance cycle of the hydraulic cylinder

Method used

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Embodiment Construction

[0016] The standard parts used in the present invention can all be purchased from the market, the special-shaped parts can be customized according to the description in the manual and the drawings, and the specific connection methods of each part adopt the mature bolts, rivets and welding in the prior art. Conventional methods such as, pasting, etc. will not be described in detail here.

[0017] Reference Figure 1-3 A specific embodiment of the present invention includes a cylinder 1 and a piston rod 2. The end of the piston rod 2 is fixed with a piston 3, the side wall of the piston 3 is provided with a groove 4, and a first sealing ring 27 is installed in the groove 4 The first sealing ring 27 includes a bayonet portion 5 at both ends, a first rubber portion 6 is fixedly connected to the inner side of the bayonet portion 5, a second rubber portion 7 is fixedly connected between the two first rubber portions 6, and the first rubber portion 6 is a plane shape, the second rubber...

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Abstract

The invention discloses an improved hydraulic cylinder. The hydraulic cylinder comprises a cylinder body and a piston rod; a piston is fixed at the tail end of the piston rod, a groove is formed in the side wall of the piston, and a first sealing ring is arranged in the groove; the first sealing ring comprises clamping pin parts at the two ends, a first rubber part is fixedly connected to the inner side of each clamping pin part, and a second rubber part is fixedly connected between the two first rubber parts; clamping grooves are formed in the side walls of the groove, an inner sleeve is movably clamped in each clamping groove through a rubber hoop, the clamping pin parts are fixedly connected with the inner sleeves, a limiting groove is formed in the inner side of each clamping groove, and a limiting pin which is selectively inserted into the corresponding limiting groove is fixed on each inner sleeve; and the inner side of each first rubber part is fixedly connected with a first flexible supporting rod, the inner side of the second rubber part is fixedly connected with a second flexible supporting rod, the second flexible supporting rod is connected with the groove, and the first flexible supporting rods are connected to the side wall of the second flexible supporting rod. According to the improved hydraulic cylinder, the defects in the prior art can be overcome, and the service life of an oil seal structure of the hydraulic cylinder is prolonged.

Description

Technical field [0001] The invention relates to the mechanical field, in particular to an improved hydraulic cylinder. Background technique [0002] Hydraulic cylinders are commonly used drive components for various mechanical equipment. The hydraulic cylinder drives the piston rod to move by the pressure of hydraulic oil to realize the driving function. In order to seal the hydraulic oil, an oil seal (sealing ring) is provided in the hydraulic cylinder. The existing oil seal has poor torsion resistance and is prone to damage and cracks during the long-term reciprocating movement of the hydraulic cylinder, causing the oil seal to become a vulnerable part of the hydraulic cylinder, which is a bottleneck for prolonging the maintenance period of the hydraulic cylinder. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide an improved hydraulic cylinder, which can solve the shortcomings of the prior art and increase the service l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20
CPCF15B15/1414F15B15/1423F15B15/1447F15B15/1452
Inventor 赵强王欢
Owner XIAN TECHNOLOGICAL UNIV
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