Hydraulic cylinder facilitating automatic heat dissipation

By introducing a cylinder flat heat pipe and heat dissipation fins combined with an airflow circulation cooling mechanism into the hydraulic cylinder, the problem of seal aging caused by heat accumulation in the hydraulic cylinder is solved, achieving efficient and energy-saving automatic heat dissipation and simplifying the maintenance process.

CN121474209BActive Publication Date: 2026-06-09YANTAI HEYI HYDRAULIC MACHINERY EQUIPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANTAI HEYI HYDRAULIC MACHINERY EQUIPMENT CO LTD
Filing Date
2025-11-26
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing hydraulic cylinders generate a lot of heat due to internal friction and mechanical wear during long-term operation, which leads to an increase in oil temperature, affects the life of seals and may cause internal leakage. Existing heat dissipation methods are energy-intensive or limited by installation space and are difficult to effectively cool down.

Method used

A hydraulic cylinder designed for automatic heat dissipation employs a combination of a cylinder flat heat pipe and heat dissipation fins, along with a heat dissipation and ventilation mechanism. The cylinder's own movement drives airflow circulation for heat dissipation. Heat is distributed to the heat dissipation fins through the cylinder flat heat pipe, and the airflow blows through the fins for rapid heat dissipation. The unidirectional airflow circulation ensures effective heat dissipation.

Benefits of technology

It achieves efficient heat dissipation without the need for additional power input, extends the service life of hydraulic cylinders, reduces equipment operating costs, and facilitates maintenance and repair.

✦ Generated by Eureka AI based on patent content.

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    Figure CN121474209B_ABST
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Abstract

This invention discloses a hydraulic cylinder with convenient automatic heat dissipation, belonging to the technical field of hydraulic cylinders. The hydraulic cylinder with convenient automatic heat dissipation includes a cylinder barrel; four flat heat pipes are fixed between the cylinder bottom and cylinder head; a heat dissipation mechanism for blowing air onto the cylinder's cooling fins is provided on the outside of the cylinder barrel; and a ventilation mechanism for unidirectional air intake and exhaust is provided between the heat dissipation mechanisms. This invention, by incorporating a heat dissipation mechanism and a ventilation mechanism, allows the heat dissipation mechanism to press down on the corrugated airbag of the ventilation mechanism, and a cylindrical spring to reset the corrugated airbag. This allows the corrugated airbag to intake and exhaust air through the air inlet and outlet of the heat dissipation mechanism, ensuring unidirectional airflow circulation. Utilizing the intake and exhaust actions of the corrugated airbag, the blown air can accurately and fully act on the cylinder's cooling fins, effectively reducing the cylinder's operating temperature and extending its service life.
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