Pavement base crack grouting head
By introducing a one-way valve mechanism and elastic element into the grouting head for cracks in the road base layer, the problem of grout backflow was solved, achieving a safe and efficient grouting process and reducing production costs.
CN224186578UActive Publication Date: 2026-05-01ZHEJIANG EXPRESSWAY MAINTENANCE CO LTD
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Patent Information
- Application Number
- CN202520816469.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-01
- Estimated Expiration
- 2035-04-27
AI Technical Summary
Technical Problem
In existing technologies, grout is prone to backflow during the road surface crack grouting process, and existing sealing measures are incomplete and costly.
Method used
A grouting head for cracks in road base is designed. A one-way valve mechanism is used to control the opening and closing of the grout channel. By utilizing the cooperation of elastic elements and valve body, combined with guide elements and cross bracing structure, the grout can achieve unidirectional flow and automatic sealing, thus preventing grout backflow.
Benefits of technology
It effectively avoids grout backflow, improves the safety and sealing of the grouting process, reduces production costs, and is suitable for commercial applications.
✦ Generated by Eureka AI based on patent content.
Abstract
A pavement base crack grouting head comprises a grouting head body and a one-way valve mechanism, a grout channel is formed in the grouting head body, the one-way valve mechanism is arranged in the grouting head body and can control the grout channel to be opened or closed, the one-way valve mechanism comprises a valve body and an elastic piece, and the elastic piece is located at the upper end of the valve body and penetrates through the valve body; the grouting head body is internally and sequentially provided with a fixing end and an abutting end from top to bottom, the fixing end facilitates fixing of the two ends of the elastic piece, the abutting end can abut against the side face of the valve body, when the elastic piece provides elastic force for the valve body to move upwards, the side face of the valve body abuts against the abutting end, and then the grout channel is closed. The one-way valve mechanism is introduced into the grouting head, so that the grouting head serves as a grouting tool and also serves as a tool for blocking a grouting hole, after grouting, the grouting head does not need to be dismantled, reverse spraying of grout can be avoided, and further, the grouting head is dismantled after the grout viscosity is increased, before complete solidification, pressure is reduced and the reverse spraying condition is relieved.
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