Industrial Door Supplementary Rail Segmentation
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Solution Overview
Problem
Large industrial doors with a height of 3.50 m or more experience acceleration forces due to the polygon effect, leading to wear and noise, and increasing the radius of the guide rail's curvature to mitigate this results in increased space requirements and mechanical complexity, while existing solutions fail to adequately prevent blocking of the clear wall opening and reduce buckling between door leaf elements.
Innovation Solution
The introduction of a supplementary rail with a downwardly sloping end section that transitions into a third rectilinear section, allowing the traction mechanism to wind without interference, and the use of guide rollers with a pivotable holder to adjust the distance between the guide rollers and the door leaf, reducing the risk of buckling and stabilizing the door leaf movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the radius of curvature of the guide rail's inner guide surface is increased to reduce polygon effect acceleration forces, then wear and noise are reduced, but the space requirement above the building opening increases
Solution Approach 1:
The guide rail is segmented into multiple sections: a first rectilinear section, a second rectilinear section, and an arcuate section connecting them. By dividing the guide rail into discrete functional segments, the arcuate section with its larger radius of curvature can be positioned specifically where needed to reduce polygon effect, while the rectilinear sections maintain compact overall dimensions and reduce the space requirement above the building opening.
2Object-affected harmful factors
If the radius of curvature of the guide rail is increased to reduce acceleration forces, then wear and noise decrease, but the guide rail arrangement becomes more complex
Solution Approach 1:
The guide rail is divided into distinct rectilinear and arcuate sections, each serving specific functions. This segmentation allows the complex arcuate section with larger radius of curvature to be isolated and optimized for reducing polygon effect, while the simpler rectilinear sections maintain ease of installation and reduce overall complexity.
Solution Approach 2:
The guide rail arrangement incorporates supplementary rails that can pivot relative to the main guide rail structure. This dynamic capability allows the supplementary rails to adjust their position during door operation, enabling the system to accommodate the complex arcuate geometry while maintaining manageable overall complexity through adaptive positioning.
3Volume of stationary object
If the supplementary rail ends closer to the door leaf to reduce space requirements, then the clear wall opening is maintained, but the traction mechanism may be blocked
Solution Approach 1:
The supplementary rail is designed to pivot relative to the main guide rail structure during door operation. This dynamic positioning allows the supplementary rail to automatically adjust its distance from the door leaf - maintaining adequate clearance when the traction mechanism needs to pass, while ending closer to the door leaf in other positions to minimize space requirements and maintain the clear wall opening.
Solution Approach 2:
The supplementary rail acts as an intermediary element between the main guide rail and the door leaf. By positioning and pivoting this intermediate component, the system provides the necessary clearance for the traction mechanism to operate reliably while simultaneously minimizing the overall space requirement and maintaining the clear wall opening dimensions.
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 allows for trouble-free winding and unwinding of the traction mechanism, reduces wear and noise, and prevents buckling between door leaf elements, maintaining the clear wall opening while optimizing the door's kinematics and reducing the space required for the guide rail.
Implementation Method 1
The spring arrangement can have a torsion spring helically running around the winding shaft, which is tensioned during a closing movement of the door leaf by rotation of the winding shaft
Implementation Method 2
The guide rail arrangement has supplementary rails which interact with leading guide means attached in the region of the leading edge of the leading gate element during an opening movement
Implementation Method 3
guide rollers with a pivotable holder to adjust the distance between the guide rollers and the door leaf, reducing the risk of buckling and stabilizing the door leaf movement
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a door comprising a door leaf and a guide rail arrangement, in which the guide rail arrangement comprises supplementary rails which cooperate with guide means arranged in the region of an edge, which leads during an opening movement, of a door leaf member which leads during the opening movement, said supplementary rails comprising a third section which linearly extends above the second linearly extending section and approximately in parallel thereto.