A tire crane pre-welding process

Abstract

The invention relates to a tire crane prewelding technology. The technology includes the following steps that a crossbeam structural component is manufactured, wherein in the crossbeam manufacturing process, inner side deflection is reversely deformed by 5 mm, and forming arch camber is increased by 5-10 mm; primary scribing is conducted, wherein a crossbeam center line and a rack positioning center line are scribed out; a rack bottom plate is mounted and welded, wherein a rack, a base plate and a bottom plate are collected and connected through service bolts, and the rack bottom plate is positioned and welded according to the crossbeam center line and the rack positioning center line; secondary scribing is conducted, wherein a crossbeam center line and a track pressing plate position line are scribed out again after the rack is welded; a track pressing plate is assembled, wherein the track pressing plate is positioned and welded through a positioning formwork, and the gap allowance of the pressing plate and a track is noted; the track pressing plate is welded, wherein a long continuous fillet weld is welded first and then a short fillet weld is welded; the crossbeam arch camber and the side-deflection degree are measured. The tire crane prewelding technology has the advantages that the crossbeam arch camber and the reserve deformation of the side deflection can be determined accurately, and rework is avoided; the positioning dimension of the track pressing and the rack bottom plate is guaranteed; moreover, the technological size and welding quality meet the requirement; working high above the ground is avoided, so that more safety is achieved, and the paint face is attractive.

Description

technical field [0001] The invention relates to the field of tire cranes, in particular to a tire crane pre-welding process. Background technique [0002] At present, the competition in the tire crane market is more intense, and the manufacturing process of domestic tire cranes is facing great challenges from foreign counterparts. The welding of the tire crane rail pressure plate and the rack bottom plate has always been a high-altitude arrangement operation, which is convenient for controlling the dimensional accuracy and avoiding the deformation of the structural parts. However, this high-altitude operation method is unsafe and damages the paint of the whole machine, so it cannot be guaranteed Welding quality and other shortcomings make it difficult to meet the requirements of standardization and stationization of tire cranes in processing. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a safe and efficient p...

AI Technical Summary

Problems solved by technology

The welding of the tire crane rail pressure plate and the rack bottom plate has always been a high-altitude arrangement operation, which is convenient for controlling the dimensional accuracy and avoiding the deformation of the structural parts. However, this high-altitude operation method is unsafe and damages the paint of the whole machine, so it cannot be guaranteed Welding quality and other shortcomings make it difficult to meet the requirements of standardization and stationization of tire cranes in processing