A track welding process for a rail crane trolley
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 residual surface stress and deformation, improving welding efficiency, and reducing the time for subsequent processing
Active Publication Date: 2021-07-13
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] like 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 control...
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The invention relates to a rail welding process of a rail crane trolley, which is characterized in that: the specific welding process is as follows: S1: butt welding of the trolley track; S2: positioning and fixing the trolley track and the box girder wing plate; S3: the box girder wing plate and the trolley track Welding; S4: weld surface and stress treatment; when welding trolley rails on the box girder wing plate in the present invention, only two sides of the box girder structure are welded with panel structures, so as to prevent the box girder structure from being arranged on all four sides In the case of a panel structure, the welding of the trolley track leads to an increase in the deformation of the remaining side wing plate structure of the box girder, and generates huge internal stress, which increases the difficulty of subsequent processing; The assembly and welding of the track can greatly reduce the stress and deformation of the rest of the surface, reduce the time for subsequent processing, and improve welding efficiency.
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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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