Assembling and welding method for space bent pipe of all-terrain vehicle and welding tool

Abstract

The invention discloses an assembling and welding method for a space bent pipe of an all-terrain vehicle and a welding tool. The assembling and welding method comprises the following steps: (1) assembling parts of the space bent pipe; and (2) conducting welding to form the space bent pipe. The welding tool comprises a main plate for conducting multi-point supporting on the bottom of the space bent pipe, and a positioning plate which is obliquely installed on the main plate and used for supporting an upwarp section of the space bent pipe; and part sections forming the space bent pipe are fixedly positioned on panel surfaces of the positioning plate and the main plate respectively. When welding needs to be conducted to form the space bent pipe, the part sections forming the space bent pipe are fixedly positioned on the panel surfaces of the positioning plate and the main plate respectively to be supported, thus it is guaranteed that no height difference exists in supporting of the part sections forming the space bent pipe, meanwhile, repeated adjustment is not needed, the problem that height difference exists in the different part sections of the space bent pipe is solved, and it is guaranteed that the overall space position precision of the space bent pipe which is formed after welding is conducted meets the design requirement.

Description

technical field [0001] The invention relates to a welding method and a welding tool for a space elbow of an all-terrain vehicle, belonging to the technical field of pipeline welding. Background technique [0002] When welding the space elbow used on all-terrain, water, all-weather and amphibious all-terrain vehicles, since the elbow is installed on the engine, there are requirements for the accuracy of the overall spatial position after welding High; during conventional welding, due to the protruding outer rings on the outer circumference of both ends of the elbow, the position is prone to looseness during assembly welding, resulting in the overall spatial position accuracy after welding not meeting the requirements; [0003] The Chinese patent CN112404865A is a multi-degree-of-freedom positioning welding fixture for bent pipes. The bent pipe forms multi-point support from the bottom through the clamping block and the supporting block. In order to ensure the accuracy of the ...

AI Technical Summary

Problems solved by technology

[0002] When welding the space elbow used on all-terrain, water, all-weather and amphibious all-terrain vehicles, since the elbow is installed on the engine, there are requirements for the accuracy of the overall spatial position after welding High; during conventional welding, due to the protruding outer rings on the outer circumference of both ends of the elbow, the position is prone to looseness during assembly welding, resulting in the overall spatial position accuracy after welding not meeting the requirements;

[0003] The Chinese patent CN112404865A is a multi-degree-of-freedom positioning welding fixture for bent pipes. The bent pipe forms multi-point support from the bottom through the clamping block and the supporting block. In order to ensure the accuracy of the welding position, it is necessary to adjust the clamping block and the supporting block multiple times. Once there is a height difference between the clamp block and the support point of the support block, the height difference will appear in different parts of the space elbow, resulting in the overall space position accuracy after welding not meeting the requirements

Images