Truck-frame side beam and crossbeam connecting joint totally-butted structure and assembly-welding process method

A technology of connecting joints and process methods, which is applied to bogies, manufacturing tools, welding equipment, etc., can solve problems that affect the carrying capacity and operating speed of bogies, large stress concentration coefficients, and reduce fatigue life of structures, so as to achieve continuous structural shape , Small stress concentration, small welding residual stress and deformation

Inactive Publication Date: 2011-02-16
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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Problems solved by technology

As a result, the stress concentration factor at the side beam joints, especially the weld area, is relatively lar

Method used

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  • Truck-frame side beam and crossbeam connecting joint totally-butted structure and assembly-welding process method
  • Truck-frame side beam and crossbeam connecting joint totally-butted structure and assembly-welding process method

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Embodiment Construction

[0010] Referring to Fig. 1, the side beam and the cross beam 1 are fully butt connected through the connecting seat 2, and the side beam connection end forms a plate-plate butt joint structure with the side beam inner vertical plate 5 and the guide column 3, and the cross beam connection end and the cross beam form a tube - Pipe butt joint structure, 4 is the upper cover plate, 6 is the lower cover plate, and 7 is the side beam reinforced partition.

[0011] Bogie frame assembly welding process with full butt joint structure of side beams: When the side beams are semi-finished products (side beam grooves without upper cover plates), they are combined with beams to complete the overall frame assembly, which is one of the most prominent features of the new frame assembly welding process First, this process breaks through the traditional process of combining side beams and beams with finished products and then combining frames. Using this process can ensure automatic MAG welding o...

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Abstract

The invention relates to a truck-frame side beam and crossbeam connecting joint totally-butted structure which is characterized in that the totally-butted connection of a side beam and a crossbeam is realized through a connecting seat, a plate-plate butt-joint structure is formed by a side beam connecting end and a side beam inner vertical plate, and a pipe-pipe butt-joint structure is formed by a crossbeam connecting end and the crossbeam. A assembly-welding process method comprises the assembly welding of the connecting seat and a crossbeam pipe, the assembly welding of crossbeam composition, the assembly welding of the connecting seat and the side beam inner vertical plate as well as a guide pole, the assembly welding of a side beam reinforcing baffle plate and an upper cover plate and the assembly welding of a whole frame. ,The invention realizes the totally-butted connection of the side beam and the crossbeam of the frame through a new connecting joint of the side beam and the crossbeam, breaks through a traditional process of forming the frame after both the side beam and the crossbeam become finished products, and has the advantage superior to the angle connecting structure or the angle-connecting and butting combined structure of a traditional structure and greatly superior to an overlapping structure. A welding joint has the minimum stress concentration, the minimum welding filling quantity and the minimum welding residual stress and deformation; the structural shape is continuous and attractive; and the bearing capacity and the anti-fatigue capacity are strong.

Description

technical field [0001] The invention relates to a full butt joint structure and assembly welding process of the frame side beam connection joints. Background technique [0002] Due to the limitations of design ideas and assembly welding process, the connection joint structure of the side beams of the frame cannot realize the full butt joint structure connection. Most of the side beam joints are designed as corner joint structures or joint joint structures of corner joints and butt joints; some of them also have lap joint structures. As a result, the stress concentration factor at the side beam joints, especially the weld area, is relatively large, which reduces the fatigue life of the frame and affects the bearing capacity and operating speed of the bogie. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a full butt joint structure and assembly welding process of the bogie frame side beam connection joint with the...

Claims

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Application Information

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IPC IPC(8): B23K9/02B61F5/52
CPCB23K9/00B23K31/003B61F5/52
Inventor 常力
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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