Hydraulic cylinder guide

CN122919863APending Publication Date: 2026-10-16NANTONG YIJIN HYDRAULIC TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202611320207.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-08-28
Publication Date
2026-10-16

AI Technical Summary

Technical Problem

目前现有同类型液压油缸的导向限位结构,大多仅依靠单一导向杆结构实现伸缩杆伸缩导向与位置限位,整体结构功能较为局限,仅能实现基础的滑动导向约束,适配常规短行程伸缩工况

Benefits of technology

[0022] 1. In this invention, when the telescopic rod extends or retracts, the connecting frame drives the guide rod and the plug to move synchronously, generating air pressure. The air pressure is delivered to the pushing assembly through the check valve and the air supply pipe, pushing the sliding plate cylinder rod to slide and driving the guide seat and the wedge sleeve to move in conjunction. The wedge sleeve pushes the ball displacement rod, causing the limiting wheel to automatically press against the outer wall of the telescopic rod. Since the connecting frame fixes the guide rod and the telescopic rod together and keeps them moving synchronously, no matter how long the telescopic rod extends, the limiting wheel always acts on the outer surface of its current extended section, realizing full-range adaptive dynamic limiting of any extension length.

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Abstract

The present application relates to a kind of hydraulic cylinder guiding device, belong to hydraulic cylinder technical field, the hydraulic cylinder body includes cylinder, sealing seat, mobile plug and telescopic rod, the outside of the cylinder is provided with the guiding structure for telescopic rod guiding, the outside of the guiding structure is provided with limit structure and push assembly being linked therewith;The guiding structure includes the jacket fixedly connected to the outside of cylinder and the annular sleeve fixedly connected to the outside of jacket, the inside of the annular sleeve is provided with chamber, the inside of the chamber is slidably connected with plug block.The hydraulic cylinder guiding device, with full adaptive dynamic limit, circumferential centering and deviation, independent gas production linkage, telescopic rod outer wall real-time purging and the advantages of cylinder circulating heat dissipation, utilize hydraulic cylinder itself telescopic as power source, reduce energy consumption, avoid static extrusion damage of rod body, improve hydraulic cylinder deflection, sealing wear, high temperature failure defect, realize the stable and reliable operation of long stroke cylinder.
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