Numerical control production line of U-rib components for bridge beams

Abstract

The invention provides a numerical control production line of U-rib components for bridge beams. The numerical control production line comprises a feeding conveying device, centering and locating devices, groove cutting guns, pre-heating devices, multi-pass rolling roller units and a discharging conveying device. The multiple centering and locating devices are installed on a rack. Each centering and locating device is formed by a forward and backward screw rod driven by a locating motor and multiple sliding block bases moving on the forward and backward screw rod symmetrically. The groove cutting guns are installed on the centering and locating devices on the feeding conveying device in a pairing manner. Multiple pairs of vertical locating clamping rollers are installed on the respective centering and locating devices. The multi-pass rolling roller units are installed on the rear of the feeding conveying device. The rolling roller unit of each pass is provided with an upper rolling roller and a lower rolling roller. Trapezoidal gaps for workpieces to pass are formed between the upper rolling rollers and the lower rolling rollers. The trapezoidal gaps of the rolling roller units aresequentially closed up along with the advancing direction of the workpieces. The preheating devices are arranged before the rolling roller units. According to the production line, the groove and surface clearing technology and the bent angle bending technology for the U-rib components are combined together for automatic production, the cost is low, the efficiency is high and the quality is excellent.

Description

technical field [0001] The invention relates to a numerically controlled production line for U-rib components used in bridges, belonging to the field of machining equipment. Background technique [0002] The manufacture of steel structure bridges requires the use of many steel U-rib members, which are welded to the bridge deck steel plates to enhance the strength and stiffness of the bridge deck. The shape of the U-rib member used for bridge production is an open isosceles trapezoid, the lower bottom of the trapezoid is open, and the two included angles between the upper bottom and the waist are equal. [0003] The traditional production process of U-rib members is as follows: [0004] 1) Use a special chamfering and milling machine to chamfer one side of the steel plate with the required width and length of the specified steel material; [0005] 2) After the chamfering of the steel plate, two bending machines with hundreds of tons of pressure placed side by side will resp...

AI Technical Summary

Problems solved by technology

[0006] The advantage of this production process is that it can produce U-rib components for bridge production that meet the technical requirements, but it has the disadvantages of huge investment in equipment, a large amount of manual auxiliary work, etc. At the same time, high production costs and unstable quality are also problems to be solved.

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