Piston return structure of drive axle brake for construction machinery
By adopting a tension screw and threaded step structure in the piston reset structure of the engineering machinery brake, the problems of complex assembly and difficult maintenance are solved, achieving the effects of simplified assembly and reduced maintenance costs.
CN224515753UActive Publication Date: 2026-07-17LONGGONG FUJIAN QIAOXIANG CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LONGGONG FUJIAN QIAOXIANG CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The existing piston reset structure of the brake in engineering machinery has a complex assembly process, long assembly time, high maintenance difficulty and cost.
Method used
The tensioning screw is replaced with a tensioning pin, and a threaded and stepped structure is provided on the head of the tensioning screw. It is fixed in the threaded hole of the hydraulic cylinder by the thread, and the spring preload is controlled by the step limit. The special tooling is eliminated and conventional tools are used for assembly.
Benefits of technology
It achieves a simple and compact structure, efficient assembly and maintenance operations, and reduces assembly and maintenance costs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224515753U_ABST
Abstract
This utility model discloses a piston reset structure for a drive axle brake in engineering machinery. It includes a hydraulic cylinder, a piston, a tensioning screw, and a spring. The piston is installed in the inner bore of the hydraulic cylinder. The tensioning screw has a threaded head for locking the screw into the threaded hole of the hydraulic cylinder. Near the threaded head, the tensioning screw has a step for supporting and limiting the screw on the end face of the threaded hole of the hydraulic cylinder to control the spring preload. The spring is fitted onto the tensioning screw. The threaded head of the tensioning screw passes through the piston screw hole and is screwed into the threaded hole of the hydraulic cylinder. The step on the head of the tensioning screw supports and limits the screw on the end face of the threaded hole of the hydraulic cylinder. This utility model has a simple and compact structure, is convenient and efficient to assemble and maintain, and is low in cost. It solves the problems of complex assembly processes, long assembly times, high maintenance difficulty, and high assembly and maintenance costs in existing technologies.
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