Train Platform Safety Device with Rotating Wire Rope Mechanism
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Solution Overview
Problem
Conventional train platform safety devices are costly, complex, and inefficient, requiring multiple drive units and excessive space, with limited usage efficiency and reliability, especially in emergency situations without power, and are not suitable for all subway systems.
Innovation Solution
A train platform safety device with a single drive unit that rotates multiple blocks with wire ropes of different diameters to control the movement of wire ropes, allowing or blocking access by overlapping or spreading them, using a rotating unit with guide rails and pulley systems to ensure smooth operation and reduce complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple drive units are used to control each block independently, then the precision of wire rope positioning is improved, but the device complexity and production cost increase significantly
Solution Approach 1:
The patent combines multiple drive units into a single drive unit that controls multiple blocks simultaneously. The single drive unit rotates a rotating member with different diameter portions, and each diameter portion winds or unwinds wire ropes connected to different blocks, enabling synchronized control of multiple blocks with one drive unit rather than requiring separate drive units for each block.
Solution Approach 2:
The single drive unit performs multiple functions by controlling multiple blocks through the rotating member with different diameter portions. Each diameter portion serves a specific block, allowing one drive unit to universally control the positioning of multiple wire ropes and blocks, reducing the overall system complexity while maintaining positioning precision.
2Manufacturing precision
If multiple drive units and related elements are installed for each block, then the control precision is improved, but the production and installation costs increase
Solution Approach 1:
The patent merges multiple drive units into a single drive unit that controls multiple blocks through a shared rotating member. This consolidation reduces the number of components that need to be manufactured and installed, thereby reducing production and installation costs while maintaining the ability to precisely position each block through the different diameter portions of the rotating member.
3Reliability
If the wire ropes are moved upwards or downwards simultaneously to match train stopping positions, then the safety function is improved, but the control difficulty increases due to rope length variations
Solution Approach 1:
The rotating member has different diameter portions at different locations, with each diameter portion specifically designed for a particular block and wire rope length. This local differentiation allows each portion to compensate for variations in wire rope length, enabling precise control of each block's position while maintaining simultaneous operation for safety.
4Reliability
If conventional screen doors are installed to block passenger access, then passenger safety is improved, but the usage efficiency decreases due to limited adaptability to different train stopping positions
Solution Approach 1:
The patent uses dynamically adjustable wire ropes that can move upwards or downwards to adapt to different train stopping positions, replacing the static conventional screen doors. The wire ropes can be positioned at different heights and locations, providing both safety and adaptability to various train positions, thereby improving usage efficiency while maintaining passenger safety.
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 reduces production and installation costs, enhances usage efficiency, and simplifies maintenance by using a single drive unit to control wire ropes, ensuring passenger safety and operational reliability, including in emergency situations, and can be adapted for various platforms and industrial sites.
Implementation Method 1
rotating members having different diameters are rotated, distances that a plurality of blocks to which wire ropes are connected are moved upwards or downwards
Implementation Method 2
rotating members having different diameters are rotated, distances that a plurality of blocks to which wire ropes are connected are moved upwards or downwards
Implementation Method 3
a drive unit rotates the rotating unit
Implementation Method 4
a drive pulley connected to an end of the rotating unit; an interlocking pulley rotatably provided on a rod of the cylinder
Implementation Method 5
prevent the wire ropes from sagging and guide the wire ropes so that the wire ropes smoothly move upwards or downwards
Data Source
Figure 1
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AI summary
Disclosed herein is a train platform safety device. The train platform safety device is installed at a position corresponding to a safety line on a subway or railway platform and is configured such that wire ropes (200) are moved upwards or downwards depending on conditions in which a train approaches or departs from the platform, thus preventing a passenger from intentionally or unintentionally falling onto the train track. Particularly, the distances that the wire ropes (200) move upwards or downwards are determined by rotating a rotating unit (140) including rotating members having different diameters, whereby the wire ropes (200) overlap each other or spread from each other. In this way, the wire ropes (200) allow or block access of passengers depending on conditions in which a train approaches or departs from the platform, thus fundamentally preventing a safety accident. (Fig. 2)