Automated Coupler Positioning via Bogie Angle Sensing
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Solution Overview
Problem
Existing coupler positioning devices for railway cars require manual input to align couplers on curved tracks, lack automation for off-center positioning, and are not self-contained, posing challenges for efficient coupling on curved sections and potential mechanical stress on bogies during coupling.
Innovation Solution
A coupler positioning device with a pair of pneumatic cylinders and a controller that measures the angular position of the bogie relative to the railway car body, allowing independent pressure adjustment to automatically pivot the coupler to a desired off-center position, enabling automatic alignment of adjacent couplers on straight or curved tracks without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual control input is used for coupler positioning, then the device structure can be simpler, but the coupling efficiency and precision on curved tracks deteriorates
Solution Approach 1:
The coupler positioning device automatically determines the required coupler angle based on the curvature of the track section, eliminating the need for manual measurement and adjustment. The system self-regulates by receiving curvature information from sensors and autonomously positioning the coupler to the appropriate angle, thereby improving coupling efficiency without requiring additional manual intervention steps
Solution Approach 2:
The patent replaces manual mechanical positioning with an automated control system that uses sensors to detect track curvature and electronically controls the coupler positioning mechanism. This substitution of manual mechanical operations with an automated sensing and control system resolves the contradiction by improving productivity while keeping the overall device structure manageable through integrated electronics rather than complex mechanical linkages
2Ease of operation
If coupler positioning device is connected to bogie mechanically, then positioning can be achieved, but large forces are induced on bogie during collision
Solution Approach 1:
The patent extracts the coupler positioning function from the bogie structure, creating an independent positioning device mounted on the car body rather than mechanically integrated with the bogie. This separation allows the positioning device to perform its function without transmitting collision forces to the bogie, thereby resolving the contradiction between operational capability and force transmission
Solution Approach 2:
The patent introduces an independent mounting structure on the car body as an intermediary between the coupler positioning device and the bogie. This intermediary allows the positioning device to be positioned and controlled effectively while preventing direct mechanical connection to the bogie, thus avoiding the transmission of large collision forces to the bogie structure
3Device complexity
If traditional spring centering elements are used, then the device structure is simpler, but the coupler cannot be positioned in off-center position for curved tracks
Solution Approach 1:
The patent replaces static spring centering elements with a dynamic positioning system that can actively adjust the coupler angle based on track curvature requirements. The system uses adjustable actuators or positioning mechanisms that can change the coupler position dynamically, enabling both centered and off-center positioning while managing structural complexity through controlled adjustability rather than fixed mechanical constraints
Solution Approach 2:
The patent designs a positioning device that can perform multiple functions: it can position the coupler in the centered position for straight tracks and in off-center positions for curved tracks. This multi-functional capability is achieved through a unified positioning mechanism that responds to curvature inputs, resolving the contradiction by providing adaptability across different track conditions without requiring separate devices for each function
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
Enables automatic and precise alignment of couplers on curved tracks, reducing manual effort and potential mechanical stress on bogies, while allowing optional manual positioning for maintenance, thereby enhancing coupling efficiency and safety.
Implementation Method 1
The automated coupler positioning device includes a pair of pneumatic cylinders for pivoting the coupler mechanism
Data Source
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AI summary
A coupler for a railway car including a coupler anchor, a coupler mechanism pivotable relative to the coupler anchor from an on-center position to an off-center position in a substantially horizontal plane, and a coupler positioning device for pivoting the coupler mechanism relative to the coupler anchor. The coupler positioning device includes a controller adapted for receiving signal information from a bogie relating to an angular position of the bogie relative to a body of the railway car, and at least one pneumatic cylinder for pivoting the coupler mechanism. The controller controls the operation of the at least one pneumatic cylinder in response to the signal information received from the bogie.