Gauge-Changing Wheelset Locking Pins With Fluted Sleeve Engagement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gauge-changing train structures have complex and unreliable locking mechanisms that hinder the efficient adaptation of wheel gauges for cross-border railway transportation, leading to operational constraints.
Innovation Solution
A locking mechanism for gauge-changing wheelsets featuring an outer sleeve with axially extending bosses and flutes, where locking pins are inserted and switched among flutes under external force, allowing for reliable locking and unlocking to change gauges, comprising a pin body with radial grooves, lugs, and a return spring for enhanced operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex locking mechanisms with multiple components (locking rod, work arms, nodes, drive arms, linkages, springs, stoppers) are used to achieve gauge changing, then the gauge-changing capability is provided, but the structure becomes complicated and reliability deteriorates
Solution Approach 1:
The locking mechanism is segmented into modular components: outer sleeve with flutes, locking pins with lugs, and bosses. Each component has a specific function, and they work together through simple geometric engagement rather than complex linkages. The segmentation allows independent optimization of each part while maintaining overall simplicity.
Solution Approach 2:
The invention extracts and eliminates unnecessary intermediate components from traditional locking mechanisms. By using direct engagement between locking pins and flutes on the outer sleeve, complex linkages, multiple arms, and spring systems are removed, retaining only the essential locking function.
2Adaptability or versatility
If complex locking mechanisms are used to enable wheels to change among different gauges, then gauge adaptability is achieved, but operational reliability deteriorates due to poor locking and unlocking performance
Solution Approach 1:
The locking mechanism is designed to be self-actuating through gravity and simple external forces. The locking pins automatically engage with flutes when wheels are in position, and can be unlocked by applying external force to move wheels between gauges. The system serves itself without requiring complex control systems or multiple actuating components.
Solution Approach 2:
Instead of using active components (springs, motors, complex linkages) to force locking, the invention uses passive geometric constraints where the wheel position itself determines locking engagement. The flutes and lugs are designed so that proper wheel positioning automatically results in reliable locking.
3Adaptability or versatility
If traditional locking mechanisms with multiple components are used, then gauge changing function is provided, but ease of operation deteriorates due to cumbersome operation
Solution Approach 1:
The invention removes complex operating mechanisms such as multiple linkages, drive arms, and spring systems. The gauge changing operation is simplified to directly moving wheels between positions, with locking occurring automatically through the flute-lug engagement geometry.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The mechanism simplifies the gauge-changing process, ensuring reliable locking and unlocking, enabling continuous operation on different rail gauges by allowing wheels to move between standard and wide gauges efficiently and effectively.
Implementation Method 1
an upper end of the pin body is connected by a return spring
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A locking mechanism for a gauge-changing wheelset, comprising an outer sleeve (1) and locking pins (2); opposite sides outside the outer sleeve (1) are provided with bosses (11) axially extending along the outer sleeve (1), and a plurality of flutes (12) are disposed at intervals along the length directions of the bosses (11); the locking pins (2) are inserted into the flutes (12), and can be switched among the plurality of flutes (12) under the action of an external force to change a gauge.