Car roof manufacturing novel technique for urban subway aluminum alloy car

Abstract

The invention provides a car roof manufacturing novel technique for an urban subway aluminum alloy car and belongs to the field of manufacturing methods of rail train aluminum alloy car roofs. The technique comprises the following steps that an old adopted heavy and expensive high-strength steel structural frame type car roof synthetic tool is replaced with a forward installation dedicated synthetic jig position tool and a backward installation dedicated synthetic jig position tool which are made of a same-structural light aluminum alloy; and a plurality of universal clamps are additionally installed on the forward installation dedicated synthetic jig position tool or the backward installation dedicated synthetic jig position tool, so that the old requirements of manufacturing high-strength frame type car roof synthetic tool are removed, and the requirement for crown block tonnage is lowered, thus device manufacturing and procurement cost are greatly reduced, the risk of lifting and conveying operation is lowered, and lifting and conveying efficiency and safety of the urban subway aluminum alloy car are remarkably improved. According to the car roof manufacturing novel technique, by changing the sequence of the technical process, the required production period of a whole car roof product is only one day, thus production efficiency can be remarkably improved, and the economic benefits can be promoted.

Description

technical field [0001] The invention belongs to the field of manufacturing methods of aluminum alloy car roofs for rail trains, and in particular relates to a new roof manufacturing process for urban railway aluminum alloy cars. Background technique [0002] The existing production and manufacturing process of the aluminum alloy A-type train roof of urban railways includes the following steps: [0003] Step 1: Assemble the unit platform; [0004] Step 2: Use a high-strength steel structure frame-type roof composite tooling assembly to assemble the two roof side beams in the reversed state; [0005] Step 3: Assemble and weld the two sides of the unit platform described in step 1 with the two roof side beams in the reversed state described in step 2, so that the three together form an overall structure of bilateral beams with a platform ; [0006] Step 4: Use two 15t tonnage crown cranes to cooperate synchronously, and turn over the overall structure of the double-sided bea...

AI Technical Summary

Problems solved by technology

[0015] In order to solve the problems existing in the roof manufacturing process of the existing urban railway aluminum alloy car, there is a high demand for the strength of the frame-type roof composite tooling, large deformation of the roof product, poor precision, and the inability to realize streamlined operations, low production efficiency, and The workpiece needs to be flipped twice. The 15t tonnage crane is not only expensive, but also has the technical problem of potential safety hazards in the flipping process. The invention provides a new roof manufacturing process for urban railway aluminum alloy cars