Shearing device for truss production line

Abstract

The invention discloses a shearing device for a truss production line. The shearing device comprises an upper shearing device and a lower shearing device. The upper shearing device includes that a pair of upper scissors is installed at one end of a first upper shearing arm and one end of a second upper shearing arm which are hinged to an upper shearing shaft, and the other end of the first upper shearing arm and the other end of the second upper shearing arm are hinged to two piston rods of a double-piston cylinder respectively. The lower shearing device includes that lower scissors are installed at one end of a first lower shearing arm and one end of a second lower shearing arm which are installed on two lower shearing shafts respectively, and the other ends of the first lower shearing arm and the second lower shearing arm are hinged to piston rods of a first cylinder and a second cylinder respectively. Lower fixed scissors are arranged between two lower rotating ribs and fixed on a frame. The device has the advantages of adopting a lever shearing structure to shear upper rotating ribs and the lower rotating ribs step by step, utilizing a simple mechanical structure to prevent collision of the upper scissors and being simple in structure and convenient to adjust and control.

Description

technical field [0001] The invention relates to a truss production line, in particular to a shearing device of the truss production line. Background technique [0002] At present, the shearing device for cutting the truss in the truss production line includes three structural modes: the first is the hydraulic horizontal direct push shearing mode; the second is the mechanically driven eccentric slider swing shearing mode; the third is the hydraulic alternating The shearing method of shearing, the above three structural methods have the following defects: the first one adopts the hydraulic horizontal direct push shearing structure, the truss after shearing has serious overall bending at the cutting head of the truss, which affects the straightness of the truss. The second type adopts a mechanically driven eccentric slider swinging shear structure. Due to the intermittent start and stop of mechanical shearing, the vibration of the truss is large, and the cuts of the truss are u...

AI Technical Summary

Problems solved by technology

[0002] At present, the shearing device for cutting the truss in the truss production line includes three structural modes: the first is the hydraulic horizontal direct push shearing mode; the second is the mechanically driven eccentric slider swing shearing mode; the third is the hydraulic alternating The shearing method of shearing, the above three structural methods have the following defects: the first one adopts the hydraulic horizontal direct push shearing structure, the truss after shearing has serious overall bending at the cutting head of the truss, which affects the straightness of the truss

The second type adopts a mechanically driven eccentric slider swinging shear structure. Due to the intermittent start and stop of mechanical shearing, the vibration of the truss is large, and the cuts of the truss are uneven after shearing; in addition, the brake in the shearing device is easily damaged, and the power of the motor is large. big impact

The third is the shearing method of hydraulic cross-shearing. The hydraulic cross-shearing cuts out the wide mouth of the inner side of the truss.

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