Chord stepping device in steel truss production line

Abstract

The invention discloses a spiral rib stepping device applied to a steel bar truss production line. The spiral rib stepping device structurally comprises a lower pressing part and an upper pressing part, wherein the lower pressing part and the upper pressing part are arranged on a stepping frame; the lower pressing part comprises a lower fixed wheel and a lower moving wheel, the lower fixed wheel and the lower moving wheel are clamped on the two sides of a lower spiral rib, a second one-way bearing is mounted on the lower fixed wheel, a first one-way bearing is mounted on the lower moving wheel, and the lower moving wheel is connected with the lower moving seat; the upper pressing part comprises an upper fixed wheel and an upper moving wheel, the upper fixed wheel and the upper moving wheel are clamped on the two sides of the upper spiral rib, a second one-way bearing is mounted on the upper fixed wheel, a first one-way bearing is mounted on the upper moving wheel, and the upper moving wheel is connected with the upper moving seat; the rotation directions of the first one-way bearings and the second one-way bearings are opposite. The spiral rib stepping device applied to the steel bar truss production line has the beneficial effects that the first one-way bearings and the second one-way bearings are opposite in the rotation directions and are respectively mounted on the fixed wheels and the moving wheels, and the fixed wheels and the moving wheels respectively press the upper spiral rib and the lower spiral rib, so that the stepping of the upper spiral rib and the lower spiral rib can be achieved, and no-load reset can be realized. The spiral rib stepping device has the advantages that the stepping speed and the precision are high, the structure is simple, and the adjustment is convenient.

Description

technical field [0001] The invention relates to a steel bar truss production line, in particular to a chord bar stepping device in the steel bar truss production line. Background technique [0002] At present, the commonly used steel truss is a triangular beam truss. In the triangular beam truss production line, the stepping device of one upper chord bar and two lower chord bars is a continuous reciprocating stepping device, that is, when the starting chord bars step, the air cylinder or oil cylinder respectively Compress the string bar, and release the string bar at the end point to retract and reset. In the prior art, the pressing and releasing actions of the continuous reciprocating stepping device not only affect the stepping speed, but also the reaction time of pressing and releasing seriously affects the stepping accuracy of the truss when the stepping speed is high, resulting in The finished steel trusses have different lengths, and the length error is large. Conte...

AI Technical Summary

Problems solved by technology

In the prior art, the pressing and releasing action of the continuous reciprocating stepping device not only affects the stepping speed, but also the reaction time of pressing and releasing seriously affects the stepping accuracy of the truss when the stepping speed is high, resulting in The length of the finished steel truss is different, and the length error is large

Images