Movable Roof Roller Anti-Excavation Guide Bead
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Solution Overview
Problem
Existing movable weather protection roofs face issues with rollers easily jumping out of guides or being lifted off due to strong winds or misalignment, particularly when the guide rails are not parallel, leading to potential damage.
Innovation Solution
A rail guide system with securing beads that interact with correspondingly shaped securing means on the rollers, allowing limited vertical movement to prevent lifting while enabling easy attachment and detachment for secure placement and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional guide rails are used without additional securing structures, then the device complexity is low and ease of manufacture is high, but the reliability is poor as rollers can easily jump out or be lifted off by wind or misalignment
Solution Approach 1:
The guide rail is enhanced with localized securing beads at critical positions rather than completely redesigning the entire rail structure. These beads create specific engagement points that prevent roller disengagement while maintaining the overall simplicity of the guide rail design.
Solution Approach 2:
Securing beads act as intermediary elements between the guide rail and rollers. These beads provide the necessary mechanical interlocking function without requiring complex fastening mechanisms or additional components, thus improving reliability while minimizing added complexity.
2Reliability
If anti-lift devices are firmly integrated into the weather protection roof as in prior art, then the reliability improves, but the ease of operation deteriorates as attachment and detachment become difficult and time-consuming
Solution Approach 1:
The securing function is segmented into modular securing beads that are integrated into the guide rail structure. This allows the anti-lift function to be provided through the existing guide rail system without requiring separate, firmly integrated anti-lift devices, thus maintaining ease of operation while ensuring reliability.
Solution Approach 2:
The guide rail structure itself provides the anti-lift function through its integrated securing beads, eliminating the need for separate anti-lift devices that require attachment and detachment. The system serves its own anti-lift function, improving ease of operation while maintaining protection against lifting.
3Reliability
If securing beads with significant vertical extension are used, then the reliability against lifting improves, but the ease of operation worsens as attachment becomes more difficult
Solution Approach 1:
The securing beads are designed with optimized dimensional parameters, specifically with limited vertical extension. This parameter optimization provides sufficient anti-lift protection while maintaining ease of manufacturing and attachment, avoiding excessive complexity in the guide rail structure.
Data Source
Figure 1A~1B
Figure 2A~2B
AI summary
Movable weather protection roof comprising a roof truss (2) with a roller (21) attached to its underside, and a guide means (3) which is attached to the top of a support (4) and defines a travel path for the roller (21), wherein the guide means is a guide rail (3) which has a safety bead (31) running along the rail which, in conjunction with the safety means (211, 212) engaging behind the bead (31) of the roller (21), forms an anti-excavation protection, and the use of such a weather protection roof.