Line drawing device and line drawing method for I-steel blanking

Abstract

The invention discloses a line drawing device for I-steel blanking. The line drawing device for I-steel blanking comprises a rigid connecting rod and two vertical clamping plates, wherein the two vertical clamping plates are oppositely arranged; the two ends of the rigid connecting rod are perpendicularly welded to the vertical clamping plates so as to form a whole; the lower middle part of each vertical clamping plate is hollowed to form a web avoiding area; and wing plate clamping grooves extending upwards are formed in the left edge and the right edge of each web avoiding area respectively. Meanwhile, the invention further discloses a line drawing method for I-shaped steel blanking. The portable line drawing device is designed according to the model and the shape characteristics of I-shaped steel, has the characteristics of portability and rapidness, and can ensure that the cut section of the I-shaped steel is flush and has no error in the vertical direction; and compared with traditional manual line drawing, the construction efficiency is greatly improved, the labor cost is saved, meanwhile, the welding seam width requirement can be met, the steel plate connecting quality is ensured, and the device and the method are suitable for all I-shaped steel machining and cutting precise positioning.

Description

technical field [0001] The invention relates to the technical field of engineering construction tools, in particular to a constant-section liner for blanking I-beams, and a line-drawing method thereof. Background technique [0002] The initial support of the tunnel is supported by I-beams, which are fabricated in sections and spliced ​​by connecting steel plates and bolts on site. The I-beam needs to be blanked according to the designed length. The traditional I-beam blanking mainly uses a steel ruler to draw lines and then cut into segments. [0003] The traditional I-beam cutting and drawing lines use a steel ruler. Since the cross-section of the I-beam is "H"-shaped, the steel ruler draws the line in sections, and the process of drawing the line is discontinuous, especially at the web of the I-beam. , resulting in uneven webs during cutting, resulting in inconsistency in the size of the final cross-section, so that the welding position of the connecting steel plate and t...

AI Technical Summary

Problems solved by technology

[0003] The traditional I-beam cutting and drawing lines use a steel ruler. Since the cross-section of the I-beam is "H"-shaped, the steel ruler draws the line in sections, and the process of drawing the line is discontinuous, especially at the web of the I-beam. , resulting in uneven webs during cutting, resulting in inconsistency in the size of the final cross-section, so that the welding position of the connecting steel plate and the quality of the weld cannot be guaranteed, directly resulting in a low pass rate of shear connection of the primary support arch unit in the hole

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