Magnetic Rail Brake Integrated High-Position Detection
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Solution Overview
Problem
Existing magnetic rail brake devices require project-specific adjustments to the bogie and are sensitive to environmental influences, making them inflexible and difficult to maintain.
Innovation Solution
A standardized high-layer recognition device is integrated into the actuating cylinder, featuring an electrical end-layer switch and a construction unit that can be easily assembled and dismantled, reducing environmental sensitivity and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a high position detection device is designed as a standardized unit integrated into the actuating cylinder, then adaptability and ease of installation are improved, but device complexity increases
Solution Approach 1:
The high position detection device is merged with the actuating cylinder by integrating the limit switch directly into the cylinder structure. The actuating piston of the pressure-medium-actuated actuating cylinder directly actuates the limit switch, eliminating the need for separate mounting brackets or intermediate mechanisms. This integration achieves standardization while maintaining simplicity through functional consolidation.
2Ease of manufacture
If the high position detection device is integrated into the actuating cylinder, then ease of installation and dismantlement are improved, but manufacturing complexity increases
Solution Approach 1:
The actuating cylinder is designed to serve multiple functions: it acts as both the actuator for the magnetic device and the housing for the high position detection device. The limit switch is integrated into the cylinder structure such that the same component performs both actuation and detection functions, eliminating the need for separate dedicated structures and simplifying manufacturing.
3Reliability
If the limit switch is arranged within the actuating cylinder, then protection against environmental influences is improved, but device complexity increases
Solution Approach 1:
The limit switch is nested within the actuating cylinder housing, which provides inherent protection against environmental influences such as dust, moisture, and mechanical impacts. The limit switch is positioned inside the cylinder structure, utilizing the existing enclosed space rather than requiring an additional protective housing or sealing mechanism.
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 solution enables flexible use across various magnetic rail facilities, enhances robustness against environmental influences, and simplifies maintenance and repair by allowing quick removal and reinstallation of the high-layer recognition module.
Implementation Method 1
the high position detection device comprises at least one electrical limit switch arranged within the actuating cylinder, e.g. designed as a microswitch, with at least two switching states, which changes the switching state when the high position is assumed by the magnetic device
Implementation Method 2
at least one pressure-medium-actuated actuating cylinder with a cylinder housing and with an actuating piston movable relative to the cylinder housing
Implementation Method 3
The actuating pistons are spring-loaded upward toward the bogie, so that the link magnets are lifted off the rail due to the spring action of the four actuating pistons
Implementation Method 4
at least one magnetic device which can be lowered into a low position on a rail via the actuating cylinder in order to generate a magnetic attraction force between the rail and the at least one magnetic device by means of a magnetic short circuit with the rail
Implementation Method 5
At the same time, the link magnets are electromagnetically excited, so that the resulting magnetic attraction and the friction between the rail and the link magnets create a braking force
Implementation Method 6
The actuating pistons are spring-loaded upward toward the bogie, so that the link magnets are lifted off the rail due to the spring action of the four actuating pistons
Implementation Method 7
To lower the link magnets, compressed air, for example, is supplied to the working chambers of the actuating cylinders, exerting a compressive force on the actuating pistons that exceeds the spring force
Implementation Method 8
the resulting magnetic attraction and the friction between the rail and the link magnets create a braking force that supplements the braking force applied by the main braking system
Data Source
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AI summary
The invention relates to a magnetic track braking device (1) for a rail vehicle, at least comprising: - at least one pressure-medium-actuated actuation cylinder (5), which has a cylinder housing (10) and an actuation piston (7) movable relative to the cylinder housing (10); - at least one magnet apparatus (2), which can be lowered into a low position onto a rail by means of the at least one actuation cylinder (5) in order to generate, by means of a magnetic short circuit with the rail, a magnetic attractive force between the rail and the at least one magnet apparatus (2), and which can be placed, by means of the actuation cylinder (5), into a high position raised from the rail and into any intermediate positions between the low position and the high position; - at least one high-position detecting apparatus (17), which generates a high-position signal when the high position is assumed by the at least one magnet apparatus (2).