High pressure jetting impact head

By designing a high-pressure jet impact head and adopting a closed door structure with a support plate and a rotating shaft hinged together, combined with high-pressure jet holes and water injection pipes, the problem of insufficient impact resistance of traditional flap-type driven pile tips in complex hard layers has been solved, achieving efficient penetration and improved construction efficiency.

CN224605545UActive Publication Date: 2026-08-07SHANGHAI ZHENZHONG CONSTR MASCH TECH CO LTD
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Patent Information

Application Number
CN202521897951.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-04
Publication Date
2026-08-07
Estimated Expiration
2035-09-04

AI Technical Summary

Technical Problem

Traditional flap-type driven pipe pile tips have insufficient impact resistance when facing complex hard layers, especially thick backfill riprap layers and large riprap, resulting in low construction efficiency and easy damage. In addition, the flap gate is prone to deformation during impact, affecting the performance.

Method used

A high-pressure jet impact head is designed, which adopts a closed door structure with a support plate and a rotating shaft hinged together. Combined with a high-pressure jet hole and a water injection pipe, it enhances the impact force and penetration ability, and uses high-pressure water flow to assist in crushing rocks and reduce the risk of valve deformation.

Benefits of technology

It improves construction efficiency, enhances the structural stability and durability of the impact head, effectively penetrates complex hard layers, reduces sinking resistance, and improves construction efficiency.

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Abstract

The utility model discloses a high pressure jet formula impact head, including sinking pipe, impact head and support plate, the support plate is two, two the support plate radial setting at sinking pipe bottom end export place, be equipped with rotating shaft between the support plate, the rotating shaft is hinged with first closed door and second closed door, first closed door and second closed door are hinged respectively in rotating shaft both sides, the bottom port of sinking pipe is equipped with two with first closed door and second closed door cooperation's first bevel and second bevel that lean to upwards. The utility model has the beneficial effects that: guarantee the penetration ability to the stratum, have promoted the structural stability and durability of impact head, have improved construction efficiency.
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