Compact secondary suspension for axlebox built-in bogies

Abstract

A compact secondary suspension device for a bogie with built-in axle boxes belongs to the field of secondary suspension shock absorbers for bogies of rail cars. The compact secondary suspension devicecomprises two vertical shock absorbers, two double convoluted air springs, a compact bolster, double elbow anti-rolling torsion bars, a transverse shock absorber and ipsilateral external double traction rods, wherein the compact bolster comprises a bolster body, a transverse buffer, a bolster core tube, two traction rod hinging seats, two vertical shock-absorber bases, two anti-rolling torsion bar seats, two frame connection bases , two air spring mounting seats and two hoisting seats. The compact secondary suspension device for the bogie with the built-in axle boxes effectively overcomes theproblem that transverse shock-absorber seats in the prior art cease to exist due to the reduction of the layout space and the cancellation of central rectangular windows of the casing of metro bogieswith built-in axle boxes. In the meantime, the new transverse buffer has the advantages of small size, high strength, easy manufacture and easy installation, so as to fully meet the requirements of transverse shock absorption and anti-collision on curves and greatly reduce the space occupied by the transverse shock absorber.

Description

technical field [0001] The invention belongs to the field of secondary suspension shock-absorbing devices for rail vehicle bogies, and in particular relates to a compact secondary suspension device for axle box built-in bogies. Background technique [0002] The frame of the existing railway vehicle bogie is usually an axle box external bogie, such as Figure 1 to Figure 2 As shown, the common axle box external bogie is an approximately H-shaped welded frame formed by two beams 1 and two side beams 3. The basic structure of the frame includes two longitudinal beams 2, two beams 1 and the side beams 3 fixedly connected to the two ends of the beam 1, the six of which are jointly welded into a capital letter H-shaped structure, each beam 1 includes a set of traction rod seats 1-4, two seamless steel pipes 1-1 They are parallel to each other, and the distance between them is bridged and fixed by two parallel longitudinal beams 2 respectively, and the two cross beams 1 and the two...

AI Technical Summary

Problems solved by technology

[0003] However, the aforementioned common compact traction rod, transverse stopper 2-1 and transverse shock absorber seat 2-2 are all located inside the rectangular window in the center of the bogie frame. The layout on the diagonal of the window is usually only suitable for the axle box external bogie frame of the EMU with large frame size and weight. Due to the high structural strength of the large frame, it has a relatively wide layout space for auxiliary components or Suspension or jib structure with high loading torque

Images