Cylinder cover and hydraulic cylinder provided with same

A technology of hydraulic cylinder and cylinder head, applied in the field of hydraulic cylinder, can solve the problems of poor timeliness of sealing failure judgment and poor sealing effect of hydraulic cylinder, and achieve the effect of prolonging the life of the sealing structure and strong reliability.

Inactive Publication Date: 2019-10-22
TIANJIN SHUANGXIANG ENG HYDRAULICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a cylinder head and a hydraulic cylinder equipped with the cylinder head which solve the problems of poor sealing effect of the existing hydraulic cylinder and poor timeliness of seal failure judgment.

Method used

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  • Cylinder cover and hydraulic cylinder provided with same
  • Cylinder cover and hydraulic cylinder provided with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] see figure 1 , a hydraulic cylinder head, comprising a cylinder head body 1, the cylinder head body has a sealing annular surface. The sealing annular surface is the end surface where the cylinder head is in contact with the lower end surface of the cylinder body of the hydraulic cylinder and on which the sealing ring is installed. The middle part of the sealing annular surface has an annular sinking groove 2 , and the bottom of the annular sinking groove is provided with an annular oil collecting chamber 3 . The sinker divides the sealing annular surface into a first sealing surface 4 near the inner side of the end cap body and a second sealing surface 5 near the outer side of the end cap body.

[0019] The annular sinking groove is designed to match the annular protrusion on the lower section of the hydraulic cylinder block. Sealing rings can also be installed on both sides of the ring sinking groove. After the traditional sealing surface is segmented, the sealing ri...

Embodiment 2

[0024] see figure 2 , a hydraulic cylinder, the hydraulic cylinder includes a cylinder body 10, a cylinder head and a piston rod 11, the cylinder head is the above-mentioned cylinder head.

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PUM

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Abstract

The invention discloses a cylinder cover and a hydraulic cylinder provided with the same and belongs to the technical field of hydraulic cylinders. The cylinder cover comprises a cylinder cover body,and the cylinder cover body is provided with a sealing annular surface. The cylinder cover is characterized in that an annular sinking groove is formed in the middle of the sealing annular surface, anannular oil collecting cavity is formed in the bottom of the annular sinking groove, and the sinking groove divides the sealing annular surface into a first sealing surface close to the inner side ofan end cover body and a second sealing surface close to the outer side of the end cover body; an oil unloading duct is arranged on the end cover body, one end of the oil unloading duct communicates to the oil collecting cavity while the other end of the oil unloading duct communicates to the outer side of the end cover body, and a thread cap is mounted at an opening in the outer side of the oil collecting duct. The hydraulic cylinder provided with the cylinder cover is good in sealing effect, a micro oil impregnation condition of the hydraulic cylinder can be displayed, and the hydraulic cylinder is convenient to maintain.

Description

technical field [0001] The invention belongs to the technical field of hydraulic cylinders, in particular to a cylinder cover and a hydraulic cylinder equipped with the cylinder cover. Background technique [0002] Hydraulic cylinders are indispensable functional components on large construction machinery. The hydraulic cylinder includes a cylinder body, a cylinder head and a cylinder rod. The cylinder head is fixed on the lower end of the cylinder body by fasteners, the cylinder rod is inserted on the cylinder body, the inner end of the cylinder rod is fixed to the piston part, and the piston part connects the inner part of the cylinder body. The cavity is divided into two pressure chambers. [0003] After the hydraulic cylinder has been working for a long time, due to the aging of the seals and other reasons, the joint between the cylinder block and the cylinder head will have seal failure and oil leakage. Once the hydraulic oil leaks, it will not only pollute the equipme...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B19/00
CPCF15B15/1438F15B15/1442F15B19/00
Inventor 吕技选
Owner TIANJIN SHUANGXIANG ENG HYDRAULICS
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