An automatic roll welding device and method for a cast-in-place pile reinforcement cage

By using synchronous pressing components in the automatic roll welding equipment for cast-in-place pile reinforcement cages, the problem of stirrups and longitudinal bars separating was solved, automated welding was achieved, processing efficiency and accuracy were improved, and manual operation and material waste were reduced.

CN122299129APending Publication Date: 2026-06-30CHENGDE LIANLI CEMENT PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDE LIANLI CEMENT PROD CO LTD
Filing Date
2026-04-21
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the final stage of the cast-in-place pile reinforcement cage, the welding machine needs to weld for another two weeks to prevent the stirrups from separating from the longitudinal bars, which makes manual operation difficult and wastes stirrups.

Method used

A synchronous pressing assembly, including a pressure roller and a U-shaped block, is used to ensure that the stirrups and longitudinal bars move synchronously. The U-shaped block presses down on the tail end of the stirrup to prevent it from detaching, and the cooperation between the lifting rod and the U-shaped block ensures that the longitudinal bars and stirrups are in close contact.

Benefits of technology

This eliminates the need for manual welding of the last two rings of stirrups, reducing the number of steps, avoiding stirrup waste, and improving processing efficiency and precision.

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Abstract

This invention discloses an automatic roll welding device and method for cast-in-place pile reinforcement cages, specifically relating to the construction field. The device includes a track and two opposing movable and fixed frames. The movable frame can move along the track. Turntable 1 and Turntable 2 are rotatably mounted on the movable and fixed frames, respectively. Multiple movable rods are inserted into the fixed frame. One end of each movable rod near the movable frame has an annular guide rail, and a slider is slidably mounted on the annular guide rail. A synchronous pressing component is mounted on the slider. This invention, by setting up the synchronous pressing component, ensures that during normal roll welding, the pressure roller presses on the stirrups, keeping the synchronous pressing component stationary. At the end of the welding process, a U-shaped block is inserted into the stirrup, allowing the synchronous pressing component to move synchronously with the cast-in-place pile reinforcement cage. The U-shaped block presses down on the tail end of the stirrup, preventing it from detaching from the longitudinal reinforcement and facilitating the welding process. This eliminates the need for manual welding of the last two rings of stirrups or cutting them.
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