Puncture hydraulic system, self-checking method and fire truck

By combining a single-acting hydraulic cylinder design with a proportional control valve, the problems of large size, heavy weight, and unadjustable puncture force in fire puncture systems are solved, achieving efficient and safe puncture results.

CN122106955APending Publication Date: 2026-05-29SICHUAN CHUANXIAO FIRE-FIGHTING VEHICLE MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN CHUANXIAO FIRE-FIGHTING VEHICLE MFG CO LTD
Filing Date
2026-04-29
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

The dual-chamber accumulator arrangement of existing fire puncture systems increases system size and weight, raises manufacturing costs and maintenance complexity, and cannot dynamically adjust puncture force to adapt to different obstacles, affecting operational safety and equipment lifespan.

Method used

It adopts a single-acting hydraulic cylinder design, eliminating the large accumulator of traditional double-acting hydraulic cylinders. It uses compressed gas and springs to achieve the reset of the puncture cylinder, and regulates the puncture speed and acceleration through proportional pressure reducing valve and proportional pressure regulating valve, and integrates a pressure sensor for precise control.

Benefits of technology

The hydraulic circuit structure has been simplified, the system size and weight have been reduced, and the cost has been lowered. This has enabled efficient and safe puncture of various obstacles, avoiding puncture failure or excessive impact.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122106955A_ABST
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Abstract

The application discloses a puncture hydraulic system, a self-checking method and a fire truck. The puncture hydraulic system comprises an oil tank, an oil pump, a proportional pressure reducing valve, a first reversing valve, a puncture oil cylinder, a compressed gas container, a proportional pressure regulating valve and an accumulator. The P port of the oil tank, the oil pump, the proportional pressure reducing valve and the first reversing valve are sequentially connected. The A port of the first reversing valve and the rodless cavity of the puncture oil cylinder are sequentially connected. The compressed gas container, the proportional pressure regulating valve, the accumulator and the P port of the first reversing valve are sequentially connected. The T port of the first reversing valve is connected with the oil tank. In this way, on one hand, the hydraulic circuit structure is greatly simplified, the overall volume and weight of the system are effectively reduced, the manufacturing cost and the installation difficulty are reduced, and the application is suitable for a fire-fighting equipment platform with limited space. On the other hand, the acceleration and the terminal puncture speed of the puncture system can be regulated and controlled, different puncture objects can be adapted, the puncture process can be ensured to be efficient and safe, and puncture failure on a relatively hard target or excessive impact on a relatively soft target can be avoided.
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