Bogie Wheelset Radial Mechanism with Structure of Adjustable Rigidity

Abstract

A bogie wheelset radial mechanism with a structure of adjustable rigidity, composing two secondary frames (21) which are pin-connected via two connecting rods (22) arranged in a crosswise manner. The connecting rods (22) are pin-connected to the secondary frames (21) with round pins (24). Joints between the round pins (24) and the connecting rods (22) and / or joints between the round pins and the secondary frames (21) are provided with replaceable elastic materials. The materials can be made into rings. End portions of the connecting rods (22) are embedded into mounting grooves (25) located in the secondary frames (21) and are connected to the same with the round pins (24).

Description

TECHNICAL FIELD[0001]The invention relates to the technical field of railway transportation equipment, in particular to a rigidity-adjustable structure of a wheelset radial mechanism of a secondary frame type radial bogie of a railway freight car.BACKGROUND ART[0002]As is well known, a wheelset radial mechanism of a secondary frame type radial bogie of a railway freight car can provide the bogie with large shear rigidity and small bending rigidity, so that the bogie has linear high-speed runnability and excellent curve passing capacity. Thus, there is clearly a strong correlation between the wheelset radial mechanism and the shear rigidity and bending rigidity of the bogie. Structurally, the wheelset radial mechanism is formed by crosswise pin-connection of front and rear secondary frames with two connecting rods, the two secondary frames and the two connecting rods are connected in series, and the two connecting rods are connected in parallel. Thus, the rigidity of the wheelset rad...

AI Technical Summary

Benefits of technology

The invention describes a way to adjust the rigidity of a wheelset radial mechanism in a way that improves the performance of a radial bogie without affecting other parts of the bogie. This is done by using elastomer materials with specific rigidity parameters at the joints between secondary frames and connecting rods. By adjusting the rigidity of the wheelset radial mechanism, the performance of the bogie can be improved, and the risk of structural failure of the components can be reduced. The use of replaceable elastic materials with buffering and damping effects further improves the reliability of the components. Overall, the invention provides a way to rigidity adjust the wheelset radial mechanism to improve the performance of a radial bogie.

Problems solved by technology

Due to space limitation, the existing secondary frame type radial bogie is designed in a way that the cross angles between the secondary frames and the connecting rods and between the connecting rods in the wheelset radial mechanism are generally not easy to change, and the rigidity of the wheelset radial mechanism is generally very large, which results in that although the secondary frame type radial bogie can have the basic characteristics of a radial bogie, its operation performance cannot reach the optimal state, and the characteristics of the radial bogie have not been fully brought into play.

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