Brake device for tensioning oil cylinder

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By introducing a brake device into the tensioning cylinder, the coordination of hydraulic oil and elastic parts is used to solve the problem of unstable position of the piston rod, and the stability control and safety guarantee of the piston rod are achieved.

CN223177859UActive Publication Date: 2025-08-01SHANDONG KEDA ELECTROMECHANICAL TECH CO LTD

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Patent Information

Application Number: CN202422627420.4
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-10-30
Publication Date: 2025-08-01
Estimated Expiration: 2034-10-30

Application Information

Patent Timeline

30 Oct 2024

Application

CN202422627420.4

01 Aug 2025

Publication

CN223177859U

IPC: F15B15/14; F15B15/24

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Application Domain

Fluid-pressure actuators

Technology Topics

Piston rod Oil pressure

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AI Technical Summary

Technical Problem

The piston rod of the tensioning cylinder is unstable due to hydraulic floating or leakage, which may cause safety accidents.

Method used

A brake device including a cylinder, a piston, a brake ball, a brake cylinder and an elastic member is designed, and the stable position control of the piston rod is achieved by using hydraulic oil pressure and the recovery force of the elastic member, and the telescopic state of the piston rod is adjusted through the opening gate and holding brake functions of the brake ball.

Benefits of technology

It realizes the accuracy and stability of the piston rod position, adapts to the flexible adjustment of oil pressure changes, and meets the requirements of mechanical safety performance.

✦ Generated by Eureka AI based on patent content.

Patent Text Reader

Abstract

The utility model discloses a brake device for a tensioning oil cylinder, and belongs to the technical field of brake equipment. The brake device comprises a cylinder body, a piston, a brake ball, a brake cylinder and an elastic piece, a piston rod penetrates through the cylinder; the piston, the brake cylinder and the elastic piece are all arranged in the cylinder body, the bottom of the elastic piece is connected with the cylinder body, the brake cylinder is arranged above the elastic piece, and the piston is arranged above the brake cylinder; the brake ball can abut against the inner wall of the brake cylinder and the outer wall of the piston rod. A sealing cavity is formed between the cylinder body and the piston; and an oil inlet nozzle communicated with the sealing cavity is arranged on the cylinder wall of the cylinder body. The brake device opens the brake by using the pressure of hydraulic oil and holds the brake by using the restoring force of the elastic piece, so that the stability of the telescopic state of the piston rod is improved; and the brake opening or contracting time can be flexibly adjusted according to the change speed of the oil pressure. The utility model belongs to a normally closed brake structure, and meets the mechanical safety performance requirements of products.

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