Rail Bogie Side-Beam Structure for Easier Assembly Alignment
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Solution Overview
Problem
The assembly of traditional rail vehicle bogies is challenging due to their large size and weight, requiring significant manpower and resources, and the alignment process is difficult, leading to increased complexity and time consumption.
Innovation Solution
A bogie design featuring two independent, parallel side beams that span over wheel sets, with axle boxes supporting the side beams and primary suspension devices, connected by simplex pull rods and anti-roll links, allowing for easier hoisting and alignment during assembly, and a force transmission device for traction and braking forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the frame is manufactured as a whole with large size and heavy weight, then the structural strength and stability are improved, but the hoisting and assembly difficulty increase significantly
Solution Approach 1:
The traditional H-shaped frame is divided into two independent side beams that can be manufactured and assembled separately. Each side beam spans over the wheel sets and is supported by axle boxes, eliminating the need to hoist and align a heavy monolithic frame while maintaining structural integrity through the parallel arrangement and connection of the two beams.
2Stability of the object's composition
If the frame is manufactured as a whole with large size and heavy weight, then the structural stability is improved, but the alignment difficulty during assembly increases
Solution Approach 1:
By segmenting the frame into two independent side beams, the alignment process is simplified. Each side beam can be positioned and aligned independently over the wheel sets, reducing the complexity of aligning a large monolithic frame structure while achieving the required positional accuracy more easily.
Solution Approach 2:
The two independent side beams are merged through the connection of opposite simplex pull rods by anti-roll links, creating a stable parallel structure that maintains rigidity and stability while being easier to assemble than a single monolithic frame.
3Force
If the frame is manufactured as a whole with large size and heavy weight, then the load-bearing capacity is improved, but the hoisting process becomes onerous
Solution Approach 1:
The frame is segmented into two separate side beams, each with reduced individual weight compared to the monolithic frame. This segmentation allows each beam to be hoisted and positioned more easily, while the combined structure through parallel arrangement and connections maintains the required load-bearing capacity.
4Stability of the object's composition
If the traditional H-shaped frame structure is used, then the structural integrity is improved, but the assembly time and resource consumption increase
Solution Approach 1:
The frame structure is segmented into two independent side beams that can be prepared and assembled in parallel, reducing the sequential assembly time. The independent side beams are connected through simplex pull rods and anti-roll links, maintaining structural integrity while significantly improving assembly productivity by reducing the overall assembly process complexity.
Data Source
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AI summary
Provided are a bogie and a rail vehicle. The bogie comprises: two wheel sets arranged in parallel, the wheel set comprising an axle (11) and two wheels (12) symmetrically arranged on the axle (11); two side beams (2) spanning over the two wheel sets, the two side beams (2) being parallel with each other; axle boxes (13) arranged on the axles (11), located under the side beams (2), and configured to support the side beams (2); primary suspension devices (7), the primary suspension device (7) being arranged between the axle box (13) and the side beam (2); two connection bases (3) each arranged at a middle part of one side beam (2); and a traction device (4) connected between the two connection bases (3), the traction device (4) being further configured to be connected to a vehicle body. The bogie and the rail vehicle can reduce the assembly difficulty of the bogie.