Dual Guide Roll Sliding Door Mechanism for Wear Reduction
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Solution Overview
Problem
Existing sliding door systems experience rapid wear and uneven movement due to the continuous change in rotation direction of roller guides, leading to noise and increased wear on guide surfaces, resulting in premature replacement of guide elements.
Innovation Solution
A door arrangement with a dual guide roll system where each guide roll is supported on opposite sides of the guide rail, allowing for one-sided contact and free rotation, combined with a sliding guide surface that gradually takes over load distribution as the guide rolls wear, extending the lifespan of the guide elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single roller guide is used that swings laterally between two guide rail surfaces, then the door can be guided along the guide rail, but the continuous change of rotation direction increases wearing of the roll surface and bearing
Solution Approach 1:
The single swinging roller guide is segmented into two separate guide rolls, each fixed to guide from one side. This eliminates the continuous rotation direction changes by having each roll rotate in only one direction, thereby reducing wear on the roll surfaces and bearings while maintaining the guidance function.
2Reliability
If the roller guide is dimensioned to travel close to both guide rail surfaces, then guidance is improved, but the roll may become dirty and unable to rotate freely, causing it to slide against both surfaces simultaneously which increases wearing
Solution Approach 1:
By dividing the guidance function into two separate rolls, each positioned close to one guide rail surface, the system avoids the problem of a single roll becoming contaminated from contact with both surfaces. Each roll maintains free rotation by contacting only its designated surface, reducing wear while preserving guidance quality.
3Device complexity
If a sliding guide is used that moves in a guiding groove, then the structure is simple, but the sliding parts wear quickly causing rapid impairment of slide quality
Solution Approach 1:
The sliding guide mechanism is replaced with a roller guide system where rolls rotate along the guide rail surfaces. This substitution reduces friction and wear compared to sliding contact, thereby extending the service life of the guide elements while maintaining structural simplicity.
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 configuration reduces wear, noise, and premature replacement by maintaining even movement and usability, allowing for delayed replacement of guide elements and reducing maintenance needs.
Implementation Method 1
a first guide roll supported by a guide surface of the guide rail on a first side of the at least one guide, and a second guide roll supported by the guide surface of the guide rail on a second side of the at least one guide
Data Source
AI summary
Door arrangement, more particularly a sliding door arrangement of an automatic door of an elevator or of a building, which comprises a door panel, and a guide arrangement for controlling the path of movement of the door panel, which guide arrangement comprises at least one guide connected to the aforementioned door panel, and a guide rail, closely along which the aforementioned guide is arranged to move, and from which guide rail the guide takes lateral support force with respect to the longitudinal direction of the guide rail. The guide comprises a first guide roll for taking the support force from the guide surface of the guide rail on the side of a first side of the guide, and a second guide roll for taking support force from the guide surface of the guide rail on the side of a second side of the guide.