Screen Door Module Fixing System with Adjustable Bases
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Solution Overview
Problem
Installing screen door modules between train or subway tracks poses time, operating, and installation constraints due to high loads and the need for immediate functionality, especially with screen doors lacking top fixings and requiring efficient assembly and fixing to platform edges.
Innovation Solution
A fixing system comprising platform-edge plates, bases with translational movement, and adjusting mechanisms for uprights, allowing quick and optimal installation of screen door modules by creating a reference surface and adjusting for assembly clearances and verticality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If screen door modules are installed between train services with limited time, then installation speed must be increased, but installation precision and proper positioning may be compromised
Solution Approach 1:
The platform edge plates are pre-installed on the platform edge before the screen door module arrives, establishing a ready-made reference surface and positioning framework. This preliminary preparation eliminates the need for time-consuming measurements and adjustments during the actual module installation, enabling rapid positioning while maintaining precision through the pre-established reference system.
Solution Approach 2:
The fixing bases act as intermediary elements between the screen door module uprights and the platform edge plates. These bases provide standardized mounting interfaces that simplify the connection process, allowing the module to be quickly attached to the pre-installed reference structure without requiring complex alignment procedures.
2Ease of operation
If the second base is made movable with translational movement to adjust for assembly clearances, then ease of adjustment is improved, but device complexity increases
Solution Approach 1:
The second base is designed with movable capability along the platform edge plate, transforming a static fixing system into a dynamic one that can adapt to assembly clearances. This mobility allows the base to be positioned at different locations to accommodate variations in module dimensions and assembly tolerances, providing flexibility without requiring complex adjustment mechanisms.
Solution Approach 2:
The position of the second base along the platform edge plate is variable, allowing the spacing between the two bases to be adjusted according to the actual dimensions of the screen door module. This parameter change capability enables the fixing system to accommodate different module sizes and assembly clearances while maintaining a relatively simple overall structure.
3Manufacturing precision
If adjusting and clamping units with jack screws are used to ensure upright verticality, then positioning precision is improved, but device complexity and installation time increase
Solution Approach 1:
The jack screw mechanism allows the upright to be adjusted to vertical position through self-contained threading action. The operator simply rotates the jack screw, which automatically translates rotational motion into linear adjustment of the upright position, providing precise verticality control through a simple, self-explanatory mechanism that requires minimal complexity.
4Productivity
If platform edge plates are pre-installed to create a reference surface, then installation efficiency is improved, but the complexity of platform preparation increases
Solution Approach 1:
The platform edge plates are installed on the platform edge during platform construction or preparation phase, before the screen door modules are assembled or installed. This preliminary action creates a permanent reference surface that simplifies subsequent module installation, transforming a complex positioning task into a simple attachment operation.
Data Source
AI summary
A system for securing a screen door module to a platform extending along a route and having at least one upright at each end and a threshold between the end uprights. The system includes a first platform edge coping plate, a second platform edge coping plate, a first base mounted fixedly on one of the first and second platform edge coping plates, a second base mounted with the ability to move in a translational movement in a direction parallel or tangential to the route, and in a direction closer toward or further away from the first base on the other of the first and second platform edge coping plates, and means of securing and adjusting the end uprights on the first and second bases.