Railway Bogie Longitudinal Traction Device
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Solution Overview
Problem
Existing railway vehicle bogies face issues with improper transfer of longitudinal force between the frame and the bolster, leading to abnormal friction and limited running speed, which restricts their application to high-speed railway wagons.
Innovation Solution
The bogie design incorporates longitudinal traction devices with a hanger rod system, including a hanger rod, round pins, locking pins, and rubber bearings, to effectively transfer longitudinal force between the frame and the bolster, reducing friction and enhancing speed capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a longitudinal stop is used to transfer longitudinal force between the frame and the bolster, then the longitudinal force transfer is simple in structure, but the longitudinal force is not properly transferred and abnormal friction is aggravated
Solution Approach 1:
The patent introduces a longitudinal traction device as an intermediary component between the frame and the bolster. This device includes a longitudinal traction rod connected to the frame and a traction rod connecting hole in the bolster, enabling proper longitudinal force transfer without the abnormal friction caused by direct longitudinal stop contact.
2Device complexity
If a longitudinal stop is used to transfer longitudinal force, then the structure is simple, but the running speed is limited and cannot exceed 160km/h
Solution Approach 1:
The longitudinal traction device serves as a mediator that enables high-speed operation by properly transferring longitudinal forces. The connection between the longitudinal traction rod and the bolster through the traction rod connecting hole allows for smooth force transfer that supports running speeds of 160km/h and above.
3Device complexity
If a hanger rod device is used to connect the frame and bolster, then the connection is simple, but abnormal friction occurs during longitudinal force transfer
Solution Approach 1:
The longitudinal traction device acts as an intermediary that redirects the longitudinal force transfer path away from the hanger rod device. The longitudinal traction rod connects to the frame and transfers force through the traction rod connecting hole in the bolster, preventing abnormal friction in the hanger rod connection.
Data Source
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AI summary
A railway vehicle bogie comprises a frame, a bolster, a wheel set assembly, an axle box suspension system, a longitudinal traction device and a hanger rod device. Wherein, the bolster is connected with the frame through the hanger rod device, and the frame is suspended above the wheel set assembly through an axle box; and one end of the longitudinal traction device is connected with the frame, and the other end of the longitudinal traction device is connected with the bolster and used for transferring a force along a longitudinal direction between the frame and the bolster. According to the railway vehicle bogie provided by an embodiment, the longitudinal traction device is arranged between the frame and the bolster and can transfer the longitudinal force between the frame and the bolster, so that the longitudinal traction device is more proper compared with the longitudinal stop for transferring the longitudinal force in the prior art; in addition, the hanger rod device with a novel structure in the railway vehicle bogie provided by an embodiment can effectively avoid the problem of abrasion in the hanger rod device in the prior art.