Escalator Step Flow Adjusting Apparatus for Roller Protection
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Solution Overview
Problem
Conventional passenger conveyor systems face issues with step displacement in the width direction, leading to increased noise from contact with skirt guards and potential damage to driving rollers due to lack of adjustment mechanisms for return path driving rails, causing discomfort and operational inefficiencies.
Innovation Solution
The passenger conveyor step flow adjusting apparatus includes forward and return path driving rails supported by rail members, with guiding pads to suppress step displacement and a return path driving rail position adjusting mechanism to improve track straightness and prevent roller misalignment, allowing smooth transfer and reducing load on driving rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If return path driving rails are fixed without adjustment mechanism, then device complexity is reduced, but step displacement in width direction increases causing noise and operational problems
Solution Approach 1:
The return path driving rails are designed with adjustable positioning mechanisms that allow dynamic adjustment of the rail positions in the width direction. This enables the system to adapt to track straightness variations and maintain proper step alignment, resolving the contradiction between fixed simple structure and reliable step position stability.
2Manufacturing precision
If adjusting rails are mounted to guide driving rollers, then track straightness of driving rollers is improved, but loads act on driving rollers causing damage
Solution Approach 1:
Guiding pads are introduced as intermediary elements that contact the facing wall surfaces of the return path driving rails to suppress step displacement. This intermediary mechanism provides guidance without directly loading the driving rollers, resolving the contradiction between achieving track straightness and preventing roller damage.
3Device complexity
If return path driving rails meander without adjustment, then device complexity is reduced, but noise from skirt guard contact increases
Solution Approach 1:
The adjustable positioning mechanisms enable dynamic adjustment of return path driving rail positions to maintain proper alignment and prevent meandering. This eliminates excessive step displacement that causes noise from skirt guard contact, resolving the contradiction between device simplicity and noise reduction.
4Ease of manufacture
If return path driving rails are not adjustable, then ease of manufacture is improved, but smooth transfer of driving rollers cannot be achieved
Solution Approach 1:
Adjustable positioning mechanisms are incorporated into the return path driving rail support structure, allowing the rails to be positioned precisely during installation and maintenance. This enables smooth transfer of driving rollers while maintaining reasonable manufacturing and installation simplicity, resolving the contradiction between ease of manufacture and reliable roller transfer.
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
This solution effectively suppresses step displacement, reduces noise from skirt guard contact, ensures smooth roller transfer, and prevents damage to driving rollers by improving track straightness and allowing precise adjustment of return path driving rails.
Implementation Method 1
guiding pads that are disposed on two sides in a width direction of the steps, and that contact facing wall surfaces of the return path driving rails... to suppress movement of the steps in the width direction
Implementation Method 2
driving rollers roll on the forward path driving rails and the return path driving rails
Data Source
AI summary
The passenger conveyor step flow adjusting apparatus includes: guiding pads that are disposed on two sides in a width direction of steps, and that contact facing wall surfaces of return path driving rails that are spaced apart in a width direction of a main frame, to suppress movement of the steps in the width direction; and a return path driving rail position adjusting portion that adjusts a position of each of the return path driving rails that are spaced apart in the width direction of the main frame in the width direction relative to rail supporting members.