General overhead crane girder is how to make the?

General overhead  bridge gantry crane  is how to make the? When finished, how to conduct sinks installed? These are common in the production of bridge crane will encounter problems, but also must be addressed, for small series from the Internet to find some information to answer these questions, we provide some technical guidance.
Girder bridge in the production
(1) Establish the key process quality system to stop indecent
To ensure the quality of the main beam production, the establishment of the main beam stop mass production of key processes indecent system tables in the main beam of the manufacturing process should be strictly in accordance with the quality of the test execution.
2 main beam cover cutting the web
Girder cover web cutting process margin should be allowed for:overhead gantry crane mainly refers to the main beam in order to meet the final size of the length of the cross-examination to ensure accurate and seam welded components shrinkage, and in the span S based on the size And more of the secondary cutting margin. Value and the thickness of the arch, fillet, process specification parameter sizes and welding processes, welding sequence and other factors. Therefore, in the manufacturing process of these factors should also be noted.
3 assembled ribs
(A) the upper cover tile on the platform, the first draw span center cover center ribs on both sides of the web and the location of such lines; rib position crossed longitudinally welded girder should consider the amount of shrinkage, Avoid accumulation resulting ultimately in the weld ribs after dislocation. Tack welding size rib assembly, ensure that its cover vertical, self-compliance requirements, tack welding ribs and then soldered.
(2) The web tile on the platform, draw across the centerline, ribs, etc. to strengthen the position angle of the welding line of the latter group.
(3) with the first spreader lifting webs on the cover, in line with the position after a fixed spot drawing size.
(4) Π-beam welding seam inside the inner seam welded inside after Π-beam weld test.
(5) Lifting Π-shaped beam to the next cover,hoist gantry crane assembly positioned under the cover assembly into the beam spot box.
(6) under the cover assembly after tack welding, the welding four longitudinal weld inspection before relevant dimensions, comply with the relevant requirements with the angle of the main beam welder four fillet welds.
(7) After the main beam welding for appearance and pour blunt processing, weld appearance quality inspection after delivery.
(8) examine the quality and appearance of the weld geometry and so reached the standard GB14405-93 and the requirements of the drawings, the qualified sinks fitted with side beams.