A mechanism for driving a wheel deflection and a wheel deflectable axle device

Abstract

The invention discloses a wheel deflectable axle device including an axle, wheels mounted on the axle and a mechanism for driving the wheel deflection, the mechanism includes a first deflection shaftand a second deflection shaft for fixedly connected to the axle, the first deflection shaft sequentially comprises a first mounting portion for mounting a wheel in the axial direction and a second mounting portion for mounting a second deflection shaft, wherein the first deflection shaft is provided with a central hole for engaging with the shaft bridge in the axial direction, and the second mounting portion is provided with a first through hole for engaging with the second deflection shaft in the radial direction. One end of the shaft bridge extends into the central hole, and the second deflection shaft passes through the first through hole and is fixed with one end of the shaft bridge extends into the central hole; the wheels are fixed to the first mounting portion. The device drives thewheel to deflect through the deflection mechanism when the vehicle passes through the curve, so that the wheel rim wear amount and the wheel / rail noise can be reduced.

Description

technical field [0001] The invention belongs to the technical field of tramcars, and in particular relates to a mechanism for driving wheels to deflect and a wheel-deflectable axle bridge device. Background technique [0002] The left and right wheels on the bogie of a traditional rail vehicle are fixed by a transmission axle, and the traction motor drives the transmission axle to drive the left and right wheels to rotate. On the other hand, the left and right wheels of a low-floor tram are decoupled so that they can rotate independently. The wheelset in which the left and right wheels can rotate around the axle independently is called an independent wheel set. However, due to the decoupling of the wheelset, the guiding performance of the independent wheels is poor, specifically, as figure 1 As shown, when the low-floor tram passes through the horizontal curved track 1-1, the wheel rim on the axle bridge device 1-4 is in contact with the track to guide the vehicle to run al...

AI Technical Summary

Problems solved by technology

However, due to the decoupling of the wheelset, the guiding performance of the independent wheels is poor, specifically, as figure 1 As shown, when the low-floor tram passes through the horizontal curved track 1-1, the wheel rim on the axle bridge device 1-4 is in contact with the track to guide the vehicle to run along the track, and the longitudinal centerline 1-2 of the car body is in line with the steering The car body rotation angle θ is formed between the longitudinal centerlines 1-3 of the frame, but the wheels of the traditional low-floor axle-axle device 1-4 can only roll around the center of the axle journal, and there is an angle of attack between the wheel rim and the outer rail of the track. α, when the vehicle is running on a line with many curves, there are problems such as large wheel-rail noise and large wear of the wheel rim, which affects the service life of the wheel

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