Train Coupling Change-Over Switch for Random End Connection
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Solution Overview
Problem
Conventional train coupling technologies are inflexible and time-consuming, particularly when implementing coupling at a fixed end, which does not meet the dynamic passenger flow requirements and is inconvenient for random end coupling.
Innovation Solution
A switching circuit with a coupling change-over switch that allows for flexible connection of train control wires and door signal wires, enabling coupling at a random end by ensuring consistent running directions and door operations across coupled trains, utilizing a three-position switch to manage forward and backward running signals, door opening and closing signals, and other directional controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If coupling at a fixed end is implemented, then the control circuit is simple, but the coupling operation is inconvenient and time-consuming
Solution Approach 1:
The patent applies the dynamics principle by making the control circuit adaptable to different coupling scenarios. The switching circuit can dynamically change its configuration based on whether the train is coupled at the head end or tail end, allowing random end coupling while maintaining proper signal routing. This dynamic adaptability resolves the contradiction by enabling flexible coupling operations without requiring a completely fixed control architecture.
Solution Approach 2:
The control circuit is designed with multi-functionality to handle both fixed-end and random-end coupling operations. By incorporating switching mechanisms that can route signals appropriately regardless of which end is coupled, the circuit serves multiple coupling scenarios with a single unified design, thereby improving operational convenience without proportionally increasing complexity.
2Adaptability or versatility
If train formation is fixed (6-car or 8-car), then the control system is simple, but it cannot meet flexible passenger flow requirements
Solution Approach 1:
The train formation is segmented into modular units that can be coupled in different configurations. The control system is similarly segmented with independent control circuits for each train unit, allowing flexible coupling of 1-4 trains while maintaining simplified individual control modules. This segmentation enables adaptability to various passenger flows without requiring a completely complex unified control system.
Solution Approach 2:
The control system is designed to dynamically adapt to different train formations and coupling configurations. Rather than being fixed for a specific formation, the control system can reconfigure itself based on how many trains are coupled and in what arrangement, enabling flexible response to varying passenger flow demands while maintaining operational simplicity through automated adaptation.
3Loss of time
If coupling at random end is implemented, then coupling is convenient and time-saving, but the control circuit design becomes difficult
Solution Approach 1:
The control circuits are pre-configured with switching mechanisms that anticipate different coupling scenarios. Before coupling occurs, the control system is prepared with multiple routing paths and switching positions that can be activated based on the actual coupling configuration. This preliminary preparation enables rapid coupling operations without requiring complex real-time decision-making during the coupling process itself.
Solution Approach 2:
Switching circuits act as intermediaries between the physical coupling connection and the control signal routing. These switching mechanisms mediate the connection between different train units and their control systems, automatically routing signals appropriately based on the coupling configuration. This intermediary layer simplifies the overall control circuit design by providing a standardized interface that handles the complexity of signal routing in random-end coupling scenarios.
Data Source
AI summary
A switching circuit for implementing coupling at a random end of a train includes a coupling change-over switch which includes a switching position, a normal position, and a disconnected position. The coupling change-over switch includes a group of terminals A, B, C, D, E, F, G, and H that are related to a train running direction signal. The terminals A and C are connected to each other, as well as the terminals E and G, the terminals B and H and the terminals D and F. The pair terminals A and C and the pair of terminals E and G act as terminals of forward and backward running signal train control lines respectively. The pair of terminals B and H and the pair of terminals D and F are connected to terminals of forward and backward running signal wires of a train electric coupler connector respectively.