Inner axle box bogie adopting novel flexible framework and permanent magnet direct drive motor

Abstract

The invention discloses an inner axle box bogie adopting a novel flexible framework and a permanent magnet direct drive motor, the framework is generally H-shaped and consists of two T-shaped beams and two sets of slewing bearings for connecting the two T-shaped beams, only the degree of freedom of transverse rotation is released, and meanwhile, the two T-shaped beams are in approximately rigid connection in other directions; by means of the characteristic, the axle box suspension device can adopt a splayed rubber pad which can meet reasonable horizontal positioning and large vertical suspension rigidity between the wheel pair and the framework and is compact in structure and economical in cost, and bearings are arranged on the inner sides of the two side beams, so that the bogie is simple in structure and low in cost. And the purpose of light weight is achieved. The driving device is directly driven by a permanent magnet synchronous motor and is mounted on the left and right inner axle box bodies, a motor shaft suspension and direct drive mode is adopted, a gearbox structure can be avoided, the structure is simple, the axle distance of the bogie can be obviously reduced, and the self weight of the bogie can be reduced.

Description

technical field [0001] The invention relates to the technical field of bogies, in particular to an inner axle box bogie using a novel flexible frame and a permanent magnet direct drive motor. Background technique [0002] The existing bogies are mainly three-piece bogies and integral frame bogies. The three-piece bogies have a strong ability to adapt to line distortion, but their structures are loose, their anti-diamond stiffness is small, and their running speeds are low. The rhombus frame can eliminate the rhombus deformation, but its ability to adapt to the twisting of the line is poor, and it needs to rely on a soft vertical deformation to adapt to the twisting of the line, and it has higher requirements for the first suspension and the track. The existing partially flexible integral frame can reduce the torsional stiffness between two side beams, which is mainly realized by rubber joints or thin steel beams. For the flexible frame with rubber joints, the rubber joints ...

AI Technical Summary

Problems solved by technology

Compared with the inner axle box bogie, the outer axle box bogie has the disadvantages of longer journal center distance, bulky structure, heavy weight, high unsprung mass, large wheel-rail action force and high traction energy consumption.

Images