Guide Rail Bogie Axle Integration for Durability
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Solution Overview
Problem
Bogies for guide-rail type vehicles face issues with durability and stability due to high load on guide wheels, frequent maintenance needs, and susceptibility to uneven surfaces, which affects cornering performance and requires complex forward-backward changeover devices and kingpin components prone to wear and breakage.
Innovation Solution
A bogie design featuring a guide frame with transverse beams and connecting members, an axle that turns, and running wheels rigidly fixed to the axle, eliminating the need for a kingpin and forward-backward changeover devices, with a simplified installation mechanism and reduced weight, enhancing durability and stability by distributing load and improving rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bogie uses a kingpin and separate guide frames connected to the kingpin, then the guide wheels can be supported, but the kingpin and bearing are subject to breakage and wear due to high load transmission
Solution Approach 1:
The patent removes the kingpin component entirely from the bogie structure. Instead of using a kingpin to connect guide frames and support guide wheels, the guide frames are directly connected to the vehicle body through suspension mechanisms, eliminating the kingpin and its associated bearing from the load transmission path.
Solution Approach 2:
The patent integrates the guide frame connection directly to the vehicle body structure, merging the functions previously separated by the kingpin and bearing assembly. The guide frames are structurally integrated with the vehicle body through suspension links, creating a more direct and reliable load path.
2Ease of operation
If the bogie uses a ring-shaped turning bearing for the whole bogie to turn, then the guide wheels can be guided on the guide rail, but the load on the guide wheels becomes high and durability becomes short
Solution Approach 1:
The patent divides the turning function into two independent parts: the guide frames turn relative to the vehicle body through suspension mechanisms, while the axle assembly turns relative to the guide frames. This segmentation allows each component to handle smaller, more manageable loads during turning operations.
Solution Approach 2:
The patent employs dynamic suspension links that allow the guide frames to pivot and adjust their position relative to the vehicle body during turning. This dynamic adjustment optimizes the load distribution and reduces peak loads on the guide wheels during cornering maneuvers.
3Stability of the object's composition
If the kingpin and bearing are worn or misaligned, then the running stability deteriorates and maintenance is required, but the complex structure with many wear components increases maintenance frequency
Solution Approach 1:
The patent removes the kingpin and its bearing assembly from the bogie structure, eliminating the primary wear components that required frequent maintenance. The guide frames are directly connected to the vehicle body through suspension mechanisms that have fewer wear points and do not require regular maintenance for proper alignment.
4Strength
If the guide frame, axle, and rubber tires are integrally coupled, then the guide wheels receive force in width direction, but the right and left guide frames separately formed transmit large load to the kingpin via guide frames
Solution Approach 1:
The patent removes the kingpin from the load transmission path. The guide frames are directly connected to the vehicle body through suspension mechanisms, allowing the lateral forces to be transmitted directly to the vehicle body structure without passing through a separate kingpin component.
Data Source
AI summary
A bogie for a vehicle which is guided by guide wheels that rotate while keeping contact with a guide rail arranged along a guideway of the vehicle. The bogie comprises a guide frame which includes a pair of transverse beams and a connecting member arranged between the pair of the transverse beams and each of the traverse beams being equipped with the guide wheels rotatably on both ends thereof, an axle supported on a non-turning part of the bogie such that the axle is capable of turning and running wheels which are attached to both ends of the axle. The running wheels are rigidly fixed to the axle and the guide frame is fixed to the axle so as to steer the guide frame, the axle and the running wheels integrally.