Train Braking Device with Integrated Electromagnetic Valve Unit
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Solution Overview
Problem
Conventional train braking devices have multiple circuits and electromagnetic valves, increasing manufacturing time and costs, and complicating maintenance, which hinders the improvement of air brake reliability.
Innovation Solution
A train braking device with an electromagnetic valve unit comprising a supply valve and an exhaust valve, connected to switch circuits that allow parallel operation with service and emergency brake controls, reducing the need for separate circuits and valves, thereby enhancing reliability and simplifying the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple circuits and electromagnetic valves are provided for service brake control and emergency brake control, then independent brake control functions are achieved, but device complexity and manufacturing costs increase
Solution Approach 1:
The patent combines the service brake control circuit and emergency brake control circuit into a single integrated controller. The controller uses a single electromagnetic valve that can be selectively activated by different switch circuits (first switch circuit for service brake, second switch circuit for emergency brake) to perform both brake functions, eliminating the need for separate electromagnetic valves and reducing overall system complexity.
Solution Approach 2:
The electromagnetic valve is designed with multi-functionality, serving both service brake control and emergency brake control purposes. The valve can be actuated by different control circuits depending on the brake mode required, making it a universal component that replaces what would traditionally require separate dedicated valves for each function.
2Adaptability or versatility
If multiple circuits and electromagnetic valves are provided, then comprehensive brake control is achieved, but maintenance difficulty increases
Solution Approach 1:
By merging multiple brake control circuits into a single integrated controller with a unified electromagnetic valve, the patent reduces the number of components that require maintenance. The consolidated design allows maintenance personnel to service a single valve and controller unit rather than multiple separate components, significantly easing maintenance complexity while preserving all necessary brake control functions.
3Adaptability or versatility
If separate electromagnetic valves are used for service brake and emergency brake, then independent control is achieved, but manufacturing time and costs increase
Solution Approach 1:
The patent merges the functionality of separate electromagnetic valves into a single valve unit that can be controlled by different switch circuits. This consolidation reduces the number of parts that need to be manufactured, assembled, and tested, thereby improving manufacturing efficiency and reducing production time and costs while maintaining independent control capability for both service and emergency brake functions.
Solution Approach 2:
The electromagnetic valve is designed as a universal component capable of performing both service brake and emergency brake functions. This multi-functionality eliminates the need to manufacture and stock separate valve types, simplifying the supply chain and manufacturing process while providing the same level of independent control as separate valves would have offered.
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 configuration improves air brake reliability by reducing the number of parts and costs, allowing for more efficient manufacturing and maintenance, while enabling independent emergency, slide, and service brake controls without separate electromagnetic valves, resulting in a more compact and reliable braking system.
Implementation Method 1
an electromagnetic valve unit having a supply valve for supplying supplied compressed air to the brake cylinder and an exhaust valve for adjusting a pressure of the supplied compressed air
Data Source
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AI summary
To provide a train braking device including a controller that controls a brake cylinder pressure acting on a brake cylinder based on a service brake command or an emergency brake command, the train braking device includes a supply valve AMV 20 for supplying compressed air to the brake cylinder and an exhaust valve RMV 21 for adjusting a pressure of the supplied compressed air. The controller includes an electromagnetic-valve drive circuit 1a, which includes a first switch circuit that a first switch SW1 for slide control is connected in parallel to ends of a serially connected circuit of a first switch SW2 for emergency brake and a first switch SW3 for service brake control with its one end being connected to a circuit power supply P and the other end being connected to the supply valve AMV 20, and a second switch circuit that a second switch SW4 for slide control is connected in parallel to ends of a serially connected circuit of a second switch SW5 for emergency brake and a second switch SW6 for service brake control with its one end being connected to the first switch circuit and the other end being connected to the exhaust valve RMV 21.