Railway vehicle sleeper beam, underframe and underframe welding method

Abstract

The invention discloses a railway vehicle sleeper beam, an underframe and an underframe welding method. The railway vehicle sleeper beam comprises a sleeper beam main body, end cover plates and floorconnecting profiles welded on the two longitudinal sides of the sleeper beam main body; the outer sides of the floor connecting profiles at the two longitudinal ends of the sleeper beam main body arerespectively welded to a floor, and the top surface of the sleeper beam main body is flush with the top surface of the floor; the two sides of the top surface of the sleeper beam main body are provided with process notches; an inner side rib plate of the sleeper beam main body is welded to the inner side of an underframe side beam through a vertical welding seam between the inner side rib plate and the underframe side beam, the end cover plates cover the process notches, the peripheries of the end cover plates are welded to the sleeper beam main body, the top surface of the sleeper beam main body is welded to the underframe side beam through a longitudinal welding seam between the top surface of the sleeper beam main body and the underframe side beam, a sleeper beam outer side rib plate ofthe sleeper beam main body is welded to the underframe side beam through a vertical welding seam between the sleeper beam outer side rib plate and the underframe side beam, and the bottom face of thesleeper beam main body is welded to the underframe side beam through a longitudinal welding beam between the sleeper beam main body and the underframe side beam. The process notches are formed in thetop surface of the sleeper beam main body, the floor is arranged in blocks, the sleeper beam and the welding beams of the floor are prevented from being concentrated on one side, and welding deformation is reduced.

Description

technical field [0001] The invention relates to the technical field of rail transit car underframes, in particular to a rail vehicle bolster made of aluminum alloy, an underframe and a welding method for the underframe. Background technique [0002] The bolster is the main force-bearing part of the car body underframe structure. It plays the role of connecting the bogie and transmitting the longitudinal compression force and traction force. It is the key structure for power transmission to realize the safe driving of the vehicle. [0003] At present, when the corbel is connected to the floor of the underframe, the upper plane of the corbel is directly contacted with the lower surface of the full-length floor for installation. The connection between the bolster and the underframe side sill is realized through the vertical welds on the inner plane of the bolster and the underframe side sill, and the welds along the longitudinal direction of the car body are connected through t...

AI Technical Summary

Problems solved by technology

With the full-length floor structure, the welds between the corbel beam and the underframe floor are concentrated on one side, which is easy to cause welding deformation

In addition, the process gap is usually set on the lower plane of the corbel. After the cover plate and the corbel are welded, the underframe of the car body needs to be machined as a whole because of the need to smooth the weld seams concentrated on the lower plane, which occupies a large area of ​​the underframe. The working hours of large stations are long and cost more manpower

Images