Trailer Bogie Frame with Segmented Brake Beams
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Solution Overview
Problem
Conventional trailer bogies face challenges in design and machining due to stress concentration on the cross beam, requiring complex structural and welding designs, which complicates manufacturing and increases the load on the cross beam.
Innovation Solution
A trailer frame design featuring U-shaped side beams with first and second brake beams arranged above the cross beam, providing multiple brake seats and connecting portions that reduce stress concentration and simplify manufacturing, while improving stability by distributing the load and reducing the need for extensive welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the brake seat is directly connected to the cross beam with a long cantilever structure, then the brake device can be mounted, but stress concentration on the cross beam occurs under frequent braking force
Solution Approach 1:
The brake support structure is segmented into separate components: the cross beam, the brake beam, and the brake seat. The brake beam acts as an intermediate segment that carries the brake seat and connects to the cross beam, dividing the load path and reducing stress concentration on the cross beam itself.
Solution Approach 2:
The brake beam serves as an intermediary component between the cross beam and the brake seat. It transfers the braking forces from the brake seat to the cross beam through a more favorable structural arrangement, reducing the direct stress concentration that would occur with a long cantilever connection.
2Ease of manufacture
If the brake seat is directly connected to the cross beam, then the brake device can be mounted, but complicated structural and welding designs are required
Solution Approach 1:
The connection structure is divided into separate weldable components: the brake beam connects to the cross beam at one end and supports the brake seat at the other. This segmentation creates discrete welding locations that are easier to execute reliably compared to a complex monolithic connection.
Solution Approach 2:
The brake beam acts as an intermediary that simplifies the welding design by providing a separate component that can be welded to the cross beam with simpler接头 (connections), reducing the overall welding complexity while maintaining connection reliability.
3Ease of manufacture
If the brake seat is directly connected to the cross beam with a long cantilever, then the brake device can be mounted, but the load on the cross beam increases
Solution Approach 1:
The load path is segmented through the introduction of the brake beam, which carries the brake seat and transfers loads to the cross beam in a distributed manner. This reduces the concentrated load that would be imposed on the cross beam by a direct long-cantilever connection.
Solution Approach 2:
The brake beam serves as a load-distributing intermediary between the brake seat and the cross beam. It reduces the direct load transmission to the cross beam by providing an intermediate structural element that can better distribute and manage the braking forces.
Data Source
Figure 1
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AI summary
A trailer framework and a trailer bogie having the same. The trailer framework comprises a cross-beam (1) and side beams (2) fixedly disposed at two ends of the cross-beam (1). The side beams (2) are U-shaped structure beams. A first brake beam (3) is disposed between the side beams (2) above and in front of the cross-beam (1), and a second brake beam (5) is disposed between the side beams (2) above and behind the cross-beam (1). The first brake beam (3) and the second brake beam (5) are parallel to each other, and two ends thereof are fixedly connected to the respective side beams (2) at inner sides of the side beams. The first brake beam (3) and the second brake beam (5) are provided with brake seats (4) thereon respectively for mounting braking devices. The plurality of braking seats (4) of the first brake beam (3) are disposed on a front side of the first brake beam and arranged at intervals laterally on the first brake beam (3), and the plurality of braking seats (4) of the second brake beam (5) are disposed on a rear side of the second brake beam and arranged at intervals laterally on the second brake beam (5). The above trailer framework enables an easier design and processing of cross-beams and can reduce the concentration of stress on the cross-beams.