Escalator Handrail Tensioning Module for Easier Adjustment Access
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Solution Overview
Problem
Conventional handrail tensioning devices for escalators require complex assembly and maintenance, are not adaptable to all escalator trusses, and difficult to adjust post-installation, increasing installation time and costs.
Innovation Solution
A handrail tensioning device with a mounting bracket, connecting bracket, pressure wheel, and adjusting bolt that allows vertical movement and adjustment without direct fixation to the escalator truss, enabling easy installation and maintenance by allowing tension adjustment through a vertically accessible adjusting head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the handrail tensioning device is directly fixed to the escalator truss, then the device can be securely installed, but the assembly and maintenance becomes complex and time-consuming
Solution Approach 1:
The handrail tensioning device is divided into separate components: a mounting bracket that attaches to the escalator truss, a connecting bracket that connects to the handrail assembly, and an adjusting mechanism. This segmentation allows each component to be independently installed and adjusted, simplifying the overall assembly and maintenance process while maintaining secure installation.
Solution Approach 2:
The mounting bracket serves as an intermediary component between the escalator truss and the handrail tensioning device. It provides a standardized interface that simplifies the connection process and allows for easy installation and adjustment without direct fixation to the truss, reducing assembly complexity.
2Reliability
If the handrail tensioning device is directly fixed to the escalator truss, then the device can be securely installed, but the installation time increases
Solution Approach 1:
By segmenting the device into a mounting bracket, connecting bracket, and adjusting mechanism, each component can be pre-assembled and positioned independently, reducing the overall installation time while maintaining secure fixation to the escalator truss through the mounting bracket.
Solution Approach 2:
The mounting bracket is designed with pre-configured mounting features that allow for rapid attachment to the escalator truss before the handrail assembly is installed. This preliminary action simplifies the installation process and reduces the time required for complete assembly.
3Reliability
If the handrail tensioning device is directly fixed to the escalator truss, then the device can be securely installed, but the adaptability to different escalator trusses is limited
Solution Approach 1:
The mounting bracket is designed with universal mounting features that can accommodate different escalator truss configurations and dimensions. It provides standardized attachment points and adjustment capabilities that allow the same bracket design to be adapted to various escalator models, enhancing versatility while maintaining secure installation.
4Reliability
If the handrail tensioning device is directly fixed to the escalator truss, then the device can be securely installed, but the post-installation adjustment becomes difficult
Solution Approach 1:
The separation of the mounting bracket from the handrail assembly allows the adjusting mechanism to be accessed and operated independently after installation. The connecting bracket can be adjusted relative to the mounting bracket without requiring disassembly of the entire handrail assembly, making post-installation adjustment easier while maintaining secure installation.
Solution Approach 2:
The connecting bracket is designed with movable joints and adjustment mechanisms that allow for dynamic adjustment of the handrail tension after installation. This dynamic capability enables easy modification of the handrail position and tension without requiring removal of the mounting bracket or disassembly of the escalator steps.
5Reliability
If the adjusting interface is located requiring step removal for access, then the device can be securely fixed, but the maintenance convenience decreases
Solution Approach 1:
The adjusting mechanism is positioned and oriented to provide access from a different spatial dimension than the escalator steps. The adjusting bolt and associated mechanism are arranged to allow maintenance personnel to access and adjust the handrail tension from the side or front of the escalator, eliminating the need to remove steps for maintenance access while maintaining secure fixation.
Data Source
AI summary
At least one embodiment of the present disclosure provides a handrail tensioning device and an escalator installation module comprising the same. The handrail tensioning device includes: a mounting bracket having a mounting foot for fixing to a module bracket of the escalator installation module; a connecting bracket connected to the mounting bracket; a pressure wheel mounted to the connecting bracket; and an adjusting bolt configured to be screwed so that the connecting bracket moves relative to the mounting bracket in a vertical direction. The adjusting head of the adjusting bolt and the mounting foot of the mounting bracket are provided at opposite ends of the handrail tensioning device in the vertical direction. Since the handrail tensioning device is fixed to the module bracket of the escalator installation module via the mounting foot of the mounting bracket, complex adjustment steps for the handrail tensioning device are eliminated. Additionally, because the adjusting head is positioned away from the mounting foot, it can be located in a position easily accessible to maintenance personnel.