Rail-mounted gantry crane trolley track welding process
A technology of trolley track and welding process, which is applied in the direction of track, welding equipment, roads, etc., can solve problems such as deformation of box girders, achieve the effects of reducing surface stress and deformation, reducing time, and improving welding efficiency
Active Publication Date: 2020-03-06
SHANGHAI ZHENHUA HEAVY IND
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a welding process for the rails of rail cranes and trolleys, which can solve the problem of serious deformation of the box girder caused by welding the trolley rails on the two side flanges after the four sides of the general box girder structure are formed
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[0029] The following examples can enable those skilled in the art to understand the present invention more comprehensively, but the present invention is not limited to the scope of the described examples.
[0030] Such as Figure 1 to Figure 3 A track welding process of a rail crane trolley is shown, and the specific welding process is as follows:
[0031] S1: Butt welding of trolley track; S2: Positioning and fixing of trolley track and box girder wing; S3: Welding of box girder wing and trolley track; S4: Weld surface and stress treatment;
[0032] S1: Butt welding of trolley track:
[0033] S1.1: Before welding, thermally cut the trolley track in a direction perpendicular to the axis of the trolley track to ensure a smooth cut, and polish the end face of the cut to completely remove scale; liner;
[0034] S1.2: Preheat the welding end of the trolley track to 120-140°C before welding, use carbon dioxide shielded welding to weld the butt jointed trolley track end, and cont...
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The invention relates to a rail-mounted gantry crane trolley track welding process. The welding process is specifically characterized by comprising the following steps that S1, butt welding of a trolley track is carried out; S2, the trolley track and a box beam wing plate are positioned and fixed; S3, the box beam wing plate is connected with the trolley track in a welding mode; S4, weld surface treatment and stress treatment are carried out. According to the process, when the trolley track is welded to the box beam wing plate, only two side edges of a structure of a box beam are provided withpanel structures in a welding mode, the situation that under the condition that each of four surfaces of the box beam structure is provided with a panel structure, the trolley track is welded, the deformation of the wing plate structures of the remaining side surfaces of the box beam is increased, huge internal stress is generated, and the subsequent treatment difficulty is increased is avoided,when the panels of the two sides of the box beam wing plate are installed, mounting and welding of the trolley track are carried out, the generation of stress and deformation of the remaining surfacescan be greatly reduced, the time for subsequent process treatment is reduced, and the welding efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of rail welding of a rail crane trolley, in particular to a rail welding process of a rail crane trolley. Background technique [0002] The track of the rail crane trolley is generally welded on the upper wing of the box girder. When the ordinary trolley track is welded, the four sides of the box girder have been formed. After the panel structure is welded on the four sides of the box girder, then the top wing of the box girder Upper welding track; such trolley track welding process is likely to lead to an increase in the deformation error of the box girder structure, and the problem of time-consuming and labor-intensive elimination of stress on the remaining side plates of the box girder. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a rail crane trolley track welding process, which can solve the problem of serious deformation of the box girde...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B23K9/16B23K9/235B23P15/00
CPCB23K9/16B23K9/235B23P15/00B23K2101/26
Inventor 孙泳涛陈飞朱朝阳陈云新江训宇
Owner SHANGHAI ZHENHUA HEAVY IND