Rolling welding machine for steel bar frame, method for making steel bar frame and method for making square pile

Abstract

The invention discloses a reinforcement skeleton roll welding machine, a reinforcement skeleton production method and a square pile production method. The roll welding machine comprises a fixed rotary electrode mechanism, a fixed immovable electrode mechanism, and a traction frame, wherein the fixed immovable electrode mechanism is arranged under the fixed rotary electrode mechanism and used for welding orientation of non-prestressed main reinforcements and isolation orientation of a stranded wire; the traction frame is arranged behind the fixed immovable electrode mechanism and used for traction of the non-prestressed main reinforcements and the stranded wire. The reinforcement skeleton production method comprises the step of conducting synchronous traction on the stranded wire while welding orientation is conducted on the non-prestressed main reinforcements and hoop reinforcements. The square pile production method of a square pile made of prestressed concrete comprises the steps of reinforcement skeleton production, stranded wire stretching, concrete pouring, maintenance and stranded wire releasing. A reinforcement skeleton and the square pile can be produced with the roll welding machine conveniently and fast; the production efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of concrete square piles, and in particular relates to a steel frame rolling welding machine, a method for manufacturing a steel frame and a method for making square piles. Background technique [0002] Prefabricated reinforced concrete square pile is an important pile foundation material in my country's civil and architectural foundation engineering, and it is also a concrete product with a large output in my country's prefabricated components. The prefabricated reinforced concrete square pile products have the following characteristics: the concrete strength of the pile body is higher, and the bearing capacity of the single pile body is larger; the construction is less affected by the change of groundwater; Different geological conditions can produce piles of various specifications and lengths; the quality of the pile body is reliable, and the construction quality is easier to guarantee than cast-in-situ p...

AI Technical Summary

Problems solved by technology

Using prestressed steel strands as the prestressed main reinforcement of prefabricated piles has higher strength and better ductility than prestressed steel rods for concrete, but in practical applications, there are also prominent problems: first, the steel strands are twisted by multiple steel wires It is not easy to be welded and entangled, and the steel skeleton composed of prefabricated piles is not easy to make; second, although the prestressed tensioning technology of steel strands used in bridges and other aspects is relatively mature, it is not easy to apply to prefabricated piles. There are not many studies, which mainly involve how to anchor the steel strand, stretch it, release it, and treat the end after it is stretched.

That is to say, the non-prestressed main reinforcement and the prestressed main reinforcement are installed and bound step by step in the process of forming the steel skeleton. A large part of the reason for the step by step is because the existing prestressed main reinforcement, especially the prestress Steel strands cannot be seamed

However, the step-by-step manufacturing process of the steel skeleton is time-consuming and laborious, and the efficiency is very low.

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