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High-temperature-resisting piston connecting device for hydraulic cylinder

A technology for connecting devices and hydraulic cylinders, applied to fluid pressure actuating devices, pistons, piston rings, etc., can solve the problems of slow heat dissipation of pistons, heavy weight, and failure of expansion cylinder seals, and achieve timely heat dissipation reduction, small specific gravity, The effect of reducing the weight of the piston

Inactive Publication Date: 2015-12-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at problems such as the heavy weight of existing hydraulic cylinder pistons in use, slow heat dissipation of pistons at high temperatures, expansion stuck in cylinders and seal failure, etc., and provides a high temperature resistant hydraulic cylinder piston that can effectively solve the above problems connecting device

Method used

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  • High-temperature-resisting piston connecting device for hydraulic cylinder
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Embodiment

[0016] Such as figure 1 , figure 2 As shown, a high temperature resistant hydraulic cylinder piston connection device of the present invention mainly includes a cylinder barrel 7, a piston rod 8, a piston 4, a constant range steel sheet 3, a sealing ring 5, a fastening nut 1 and a set screw 10, and the sealing The ring 5 is installed on the piston 4, and the constant fan steel sheet 3 is installed on the wall of the inner chamber of the piston 4.

[0017] The head end of the piston rod 8 is provided with a shaft shoulder and an external thread, and an elastic retaining ring 6, a piston 4, an elastic washer 2 and a fastening nut 1 are successively installed on the axial direction of the 8 heads of the piston rod, and the external thread of the 8 heads of the piston rod is installed There is a set screw 10 with a washer 9 which snaps onto the fastening nut 1 . When working, this design can prevent the fastening nut 1 from loosening and realize the axial positioning of the pis...

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Abstract

The invention provides a high-temperature-resisting piston connecting device for a hydraulic cylinder. The high-temperature-resisting piston connecting device mainly comprises a cylinder barrel, a piston rod, a piston, an invar steel sheet, a sealing ring, a fastening nut and a positioning screw, wherein the sealing ring is arranged on the piston; the invar steel sheet is arranged on the cavity wall of the piston. The high-temperature-resisting piston connecting device is characterized in that thermal expansion deformation of the piston under high-temperature working conditions is inhibited by using a bimetallic effect of the piston and the invar steel sheet; according to the high-temperature-resisting piston connecting device disclosed by the invention, triple fixing of the piston is realized by the fastening nut, a washer and the positioning screw; weight reduction and timely heat dissipation of the piston are realized by using a hollow-type aluminum alloy material; the thermal expansion deformation of the piston is inhibited by the invar steel sheet on the cavity wall of the piston; high-temperature-resisting sealing of the piston is enhanced by the fluorine rubber sealing ring with a rectangular section.

Description

technical field [0001] The invention relates to a high-temperature-resistant hydraulic cylinder piston connection device, in particular to a triple fixation of the piston through a fastening nut, a washer and a positioning screw; weight reduction and timely heat dissipation are realized through a hollow aluminum alloy piston; The constant-range steel sheet on the wall of the hollow cavity suppresses the thermal expansion and deformation of the piston; the high-temperature-resistant sealing of the piston is strengthened by a fluorine rubber sealing ring with a rectangular cross-section. It belongs to the technical research and development field of hydraulic cylinders. Background technique [0002] Hydraulic cylinders use the linear reciprocating motion of the piston to convert hydraulic energy into mechanical energy. However, some hydraulic cylinders have the following problems in use. First, the weight of the hydraulic cylinder is large, which limits some applications; seco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/20F16J1/10F16J9/00
Inventor 安延涛赵东杨可森杨玉娥刘鲁宁
Owner UNIV OF JINAN
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