Processing method for reinforcing cage for pre-stressed concrete hollow square pipe pile

Abstract

The invention discloses a processing method for a reinforcing cage for a pre-stressed concrete hollow square pipe pile, which comprises the following steps of: feeding a longitudinal rib and placing the longitudinal rib in a rib slot on a square fixed electrode; adjusting the elasticity of a spring in an elastic movable electrode so as to keep the acting force of an electrode body within the range from 12 to 16kg; driving an electrode wheel; driving the elastic movable electrode and a spiral annular rib winding mechanism to rotate around the square fixed electrode; driving the longitudinal rib to move horizontally by a longitudinal rib traction disk; driving an annular rib to spirally rotate around the square fixed electrode by the spiral annular rib winding mechanism, wherein the electrode body immediately follows the annular rib to finish the welding once the annular rib comes into contact with the longitudinal rib; keeping on rotating the electrode wheel and moving the longitudinal rib traction disk ceaselessly; repeating the process; and conveying the reinforcing cage through a reinforcing cage conveying mechanism until the reinforcing cage for the pre-stressed concrete hollow square pipe pile is finished. Owing to the adoption of the elastic movable electrode, the processing method ensures stable welding quality at the contact of the annular rib and the longitudinal rib, keeps the strength loss at the welding spot less than or equal to 5 percent and greatly improves the production efficiency.

Description

Technical field: [0001] The invention relates to a processing method of a reinforcement cage, in particular to a processing method of a reinforcement cage for prestressed concrete hollow square pipe piles. Background technique: [0002] The processing method of the existing prestressed concrete hollow square pipe pile steel cage is the spot welding process, and the specific process is: [0003] Step 1: Upsetting one end of the longitudinal rib, feed it into the rib guide hole on the longitudinal rib traction plate through the longitudinal rib feeding mechanism, and place the longitudinal rib on the outer peripheral surface and four corners of the square fixed electrode In several grooves arranged along the axial direction; [0004] Step 2: The spiral ring rib winding mechanism drives the ring rib to rotate around the square fixed electrode, and wraps the ring rib on the outside of the longitudinal rib in a spiral shape; [0005] The third step: drive the movable electrodes...

AI Technical Summary

Problems solved by technology

[0008] Since the whole welding process is spot welding step by step, the processing efficiency is low; in addition, because the ring rib is wound around the square fixed electrode, the movable electrode is driven for spot welding instead of the ring rib and the longitudinal rib. Spot welding immediately after contact may easily cause the ring bar to rotate around the square fixed electrode. When the ring bar contacts the next longitudinal bar, the contact points of the previous one or more longitudinal bars and the ring bar may be separated, resulting in voids. Welding will affect the product quality of steel cages for prestressed concrete hollow square pipe piles; moreover, due to the structural limitations of spot welding machines, the ring bars and longitudinal bars on the two ends of the steel cages for prestressed concrete hollow square pipe piles about 50 cm in length The reinforcement cannot be processed by spot welding, and this defect will directly affect the quality of the final product prestressed concrete hollow square pipe pile

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