Tapered wedge and swing bolster elastic connection damping device for wagon bogie and bogie

Abstract

The invention discloses a tapered wedge and swing bolster elastic connection damping device for a wagon bogie and the bogie, solves the problems of low rhombus deformation resistance of the bogie andweak control capability between a swing bolster and a side frame due to vertical vibration and transverse vibration on a main friction surface in the prior art, and has the benefits of effectively improving the transverse performance of the bogie and improving the rhombus deformation resistance of the bogie. According to the specific scheme, the tapered wedge and swing bolster elastic connection damping device for the wagon bogie comprises the swing bolster, side frames and tapered wedges, the swing bolster is connected between the two side frames, the tapered wedges are arranged at the positions, where the side frames are arranged, of the swing bolster, and the tapered wedges are arranged between the swing bolster and the side frames; the tapered wedges are connected with the inner sidesof the side frames through mortise and tenon structures so that the tapered wedges can only move vertically, elastic pieces are arranged between the two side faces of each tapered wedge and the swingbolster and make contact with the tapered wedges and the swing bolster respectively, and damping springs are arranged on the bottom sides of the tapered wedges and the bottom side of the swing bolster.

Description

technical field [0001] The invention relates to the field of railway freight cars, in particular to a vibration damping device for elastically connecting a wedge and a bolster for a railway freight car bogie and the bogie. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The wedge is a vibration damping device commonly used in the three major bogies of railway freight cars, and it is one of the core stress-bearing components to ensure the running performance of the vehicle. The main function of the wedge damping device for the three bogies of railway freight cars is to reduce the vertical and lateral vibrations between the bolster and the side frame, strengthen the connection between the bolster and the side frame, and suppress the rhombic deformation of the bogie to improve the alignment ability. [0004] Such as figure 1 shown. The exi...

AI Technical Summary

Problems solved by technology

[0008] The main shortcomings of the existing oblique wedge damping device are: first, the friction at the main friction surface attenuates both vertical vibration and lateral vibration, making it difficult to choose the relative friction coefficient; second, the friction between the bolster and the side frame The lateral restraint between the two sides is mainly controlled by the lateral friction force at the main friction surface, and the control ability is relatively weak. With the increase of wear at the contact surface of the wedge, bolster, and side frame, the control ability will decrease sharply; third, the bogie resists rhomboid deformation The capacity is mainly controlled by the lateral friction force at the main friction surface. With the increase of wear at the contact surface of the wedge, bolster, and side frame, the anti-rhombic deformation capacity of the bogie will decrease sharply, and the critical speed of the vehicle will decrease; fourthly, with The friction at the contact surfaces of the wedge, the bolster and the side frame increases, the lateral and longitudinal friction forces at the main friction surface will decrease significantly, and the control ability between the bolster and the side frame is weakened

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