Hydraulic cylinder with protection structure

By designing high-strength protective sleeves, heat insulation layers, and telescopic bellows on the hydraulic cylinder, the wear and sealing problems of the cylinder in complex environments are solved, achieving higher protection performance and equipment reliability.

CN224352182UActive Publication Date: 2026-06-12JIANGSU TIANJIAN HYDRAULIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU TIANJIAN HYDRAULIC TECH CO LTD
Filing Date
2025-06-11
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing hydraulic cylinders are susceptible to damage from impacts from building materials, abrasion from sand and gravel, high temperatures, and flying metal debris in complex working environments. This can lead to damage to the sealing structure and hydraulic oil leakage, affecting equipment efficiency and potentially causing safety accidents.

⚗Method used

A hydraulic cylinder with a protective structure was designed, including a high-strength protective sleeve, a heat insulation layer, a solution chamber, and a telescopic bellows. The protective sleeve has wear-resistant properties, the heat insulation layer prevents heat transfer, the solution chamber indicates damage, and the telescopic bellows prevents impurities from entering, thus enhancing the overall protective performance.

🎯Benefits of technology

It effectively prevents wear on the cylinder surface and damage to the sealing structure, reduces the risk of hydraulic oil leakage, extends service life, and improves equipment safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of oil cylinders with protective structure, including oil cylinder main body, mobile piston, piston rod and cylinder cover, the outer end fixed mounting of oil cylinder main body has protective sleeve, the inner wall fixed mounting of oil cylinder main body has heat insulating layer;The lower positioning piece is fixedly installed on the upper end of the oil cylinder main body, the fastening ring is threadedly connected with the outer curved surface of the lower end of the lower positioning ring, the flexible bellow is extruded and adhered to the lower end of the fastening ring, the upper positioning piece is fixedly installed on the outer curved surface of the upper end of the piston rod, the positioning column is fixedly installed on the upper end of the upper positioning piece, the clamping piece is movably connected with the outer curved surface of the positioning column, the limiting ring is fixedly installed on the upper end of the positioning column, the supporting spring is fixedly installed on the lower end of the limiting ring, the flexible bellow upper end inside extrusion is adhered between the clamping piece and the upper positioning piece.The utility model greatly improves the protection performance of oil cylinder main body, prolongs the service life of oil cylinder main body.
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