Steel bar bending device and method and application of steel bar bending device

Abstract

The invention discloses a steel bar bending device and method and application of the steel bar bending device. By usage of the device and the method, in the narrow space, air pressure can be utilizedas power, and a steel bar is simply and rapidly bent by any angle. The device is mainly composed of two punching supports, four sliding chain rods, an anti-tension curved bar, two air cylinders and aU-shaped pull rod. The bending method comprises the steps that firstly, the steel bar bending device is arranged, the air cylinders work, air cylinder push rods apply thrust to the two sides of the steel bar through arc push heads, the U-shaped pull rod pulls the middle of the steel bar, and the steel bar is stressed and bent; secondly, work inserting holes of the sliding chain rods and the anti-tension curved bar are replaced, the air cylinders work again, and the steel bar is stressed and further bent; and thirdly, the second step is repeatedly conducted till the steel bar is bent in place.According to the application, the steel bar bending device is applied to beam-beam and beam column component lap joint in assembled reinforced concrete building construction.

Description

technical field [0001] The invention belongs to the field of prefabricated building construction, and in particular relates to a steel bar bending device, method and application thereof. Background technique [0002] Compared with cast-in-place buildings, prefabricated buildings have the advantages of energy saving, environmental protection, shortening the construction period, saving manpower, and saving templates. In order to adapt to the development of the new situation and accelerate the promotion and application of prefabricated buildings, the Ministry of Housing and Urban-Rural Development issued on November 14, 2015 The "Outline for the Modernization and Development of the Construction Industry" plans that by 2020, prefabricated buildings will account for more than 20% of new buildings, and by 2025, prefabricated buildings will account for more than 50% of new buildings. However, prefabricated buildings also have some disadvantages, such as: the integrity and rigidity ...

AI Technical Summary

Problems solved by technology

However, due to the fact that the components at the joints are close to each other, and there are many scaffolds erected on the assembly construction site, the extension length of the steel bars at the beam ends is limited, and the bending space of the steel bars is very narrow. The traditional traditional big arm bending method cannot be used. Reference documents CN201710184489, CN20171039915 , CN201710984789, CN201711151671, CN201711204685, and CN201711216939 are aimed at bending steel bars in steel bar processing sheds in cast-in-place buildings. Apparatus and method for reinforcement

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