Railway Buffer Gear Space Reduction via Rotation Center Repositioning
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Solution Overview
Problem
The existing buffer gear in railway trains occupies excessive space at the train bottom, necessitating a reduction in mounting space without compromising the length of the coupler or buffer assembly's functionality.
Innovation Solution
The buffer gear incorporates a self-adaption assembly with circular arc fitting surfaces, an overload protection assembly, and a centering assembly, which reduces the space occupied by aligning the buffer assembly's rotation centers and maintaining stability and reliability through consistent gap management between the buffer and bearing assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the buffer gear is mounted in the prior art manner with rotation center in front of the front end face, then the buffer assembly can be properly positioned, but the space occupied at the train bottom increases
Solution Approach 1:
The patent moves the rotation center from a horizontal position in front of the front end face to a vertical position on the front end face itself. This dimensional repositioning allows the buffer assembly to be mounted more compactly at the train bottom while preserving the buffer capacity through proper structural design of the buffer assembly and connection components.
2Volume of stationary object
If the buffer gear occupies more space at the train bottom, then the buffer assembly can be properly positioned, but the mounting space for other components is reduced
Solution Approach 1:
By repositioning the rotation center to the front end face and adjusting the spatial arrangement of the buffer assembly, the patent reduces the longitudinal space occupied while maintaining proper positioning capability, thereby freeing up space at the train bottom for other components.
Solution Approach 2:
The patent integrates the connection assembly and bearing assembly within the space envelope of the buffer assembly, allowing components to be nested or closely arranged. This compact integration reduces the overall space occupied at the train bottom while maintaining functional integrity.
3Volume of stationary object
If the rotation center is moved to the front end face, then the mounting space is reduced, but the positioning and stability of the buffer assembly may be affected
Solution Approach 1:
The patent positions the rotation center on the front end face and uses the self-adaption assembly with circular arc fitting surfaces to provide automatic positioning and stability. The bearing assembly with vertical bearing pieces contacts the buffer assembly to constrain its position, ensuring stability despite the compact mounting arrangement.
Solution Approach 2:
The self-adaption assembly acts as an intermediary between the buffer assembly and bearing assembly, with circular arc fitting surfaces that provide automatic centering and stable positioning. This intermediary mechanism ensures the buffer assembly remains stable while occupying reduced space.
Data Source
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AI summary
The present application discloses a buffer gear including a buffer assembly; a connection assembly, the connection assembly including a connection body, the connection body has: a first connection part, the first connection part is mutually and horizontally rotatably connected with the buffer assembly, and the first connection part and the buffer assembly have a first rotation center; a second connection part, the second connection part has a connection surface, the second connection part is connected with a train body through the connection surface, and the first rotation center is located on a rear side of the connection surface; a bearing assembly, the bearing assembly is mutually and horizontally rotatably connected with the connection assembly, the bearing assembly and the connection assembly have a second rotation center, the second rotation center is located on a front side of the connection surface; and a self-adaption assembly, the bearing assembly is connected with the buffer assembly by the self-adaption assembly.