Segmented Railway Axle Box for Quick Wheel Set Replacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing rocker type axle box structure in railway vehicles is cumbersome, limiting the space for components like the brake disc and brake caliper, making it difficult to optimize the vehicle layout and efficiently replace the wheel set.
Innovation Solution
A separated axle box structure comprising an upper and lower box body connected by a bolt, with a sealed bearing mounting chamber and a positioning node mounting seat, allowing for quick removal of the lower box body when replacing the wheel set, thus optimizing component arrangement and improving replacement efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rocker type axle box structure is used, then the wheel set can be connected to the frame with force transmission capability, but the structure becomes cumbersome and occupies limited space below the railway vehicle
Solution Approach 1:
The axle box structure is divided into an upper box body and a lower box body that can be separated from each other. The upper box body remains mounted on the frame while the lower box body can be quickly removed with the wheel set. This segmentation maintains force transmission capability through the upper box body and positioning node while enabling efficient wheel set replacement by removing only the lower box body.
Solution Approach 2:
The invention changes the traditional integrated axle box structure into a separated upper-lower box body configuration. This dimensional reorganization allows the upper box body to remain for force transmission while the lower box body is removed for wheel set replacement, optimizing the spatial arrangement and improving maintenance efficiency without compromising structural integrity.
2Area of stationary object
If components such as brake disc and brake caliper are arranged in the limit space below the railway vehicle, then the vehicle layout is constrained, but the space is insufficient for optimal component arrangement
Solution Approach 1:
By separating the axle box into upper and lower box bodies, the invention creates additional spatial flexibility. The upper box body remains mounted for force transmission while the lower box body can be removed, effectively increasing the available space for arranging brake discs and calipers in optimal positions without compromising the overall vehicle layout.
3Reliability
If the rocker type axle box is mounted on the outer side of the wheel set, then force transmission is achieved, but the wheel set replacement efficiency is reduced due to multiple components installed near the wheel set
Solution Approach 1:
The axle box is segmented into upper and lower box bodies with distinct functions. The upper box body remains mounted on the frame for force transmission, while the lower box body is designed for quick removal with the wheel set. This segmentation enables maintenance personnel to replace wheel sets efficiently by removing only the lower box body and associated components, without needing to disassemble the entire axle box structure.
Solution Approach 2:
The lower box body is extracted as a separate removable component from the integrated axle box structure. This extracted lower box body contains the necessary force transmission elements and can be quickly removed together with the wheel set, significantly improving replacement efficiency while the upper box body remains in place for continued force transmission capability.
4Ease of manufacture
If the upper box body and lower box body are connected by a bolt, then the separated structure can be assembled, but the assembly process requires additional fastening steps
Solution Approach 1:
The upper box body and lower box body are connected through a bolted connection that integrates the positioning node mounting seat into the upper box body. This merging of functions allows the positioning node to be mounted on the upper box body while the lower box body is removed for wheel set replacement, simplifying the overall assembly process while maintaining structural integrity and force transmission capability.
Data Source
AI summary
A railway vehicle and an axle box structure thereof are provided. The axle box structure includes an axle box body and a positioning node mounting seat. The axle box body includes an upper box body and a lower box body. The upper box body and the lower box body enclose a bearing mounting chamber together. A lower end surface of the upper box body has a convex portion, and an upper end surface of the lower box body has a concave portion. A first semi-circular hole and a second semi-circular hole are respectively provided at the middle of the upper box body and the lower box body. If the convex portion and the concave portion are assembled in a sealed coupling manner, the bearing mounting chamber is formed by the first semi-circular hole and the second semi-circular hole.