Lifting Door Guide Pressing Sealing Device
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Solution Overview
Problem
Existing lifting gate systems experience significant wear and tear in sealing elements due to high-speed operation, leading to unreliable sealing and reduced service life, particularly in the lower region of the gate opening, and the spring devices used for returning vertical sections are subject to considerable wear, affecting the alignment and smooth operation of the door leaf.
Innovation Solution
The solution involves a guide and frame design where the vertical sections of the guides are mounted stationary on the frames and offset parallel to the plane of the door leaf, allowing for a linear horizontal movement, which presses the door leaf against a sealing device as a rigid element, reducing wear and enhancing the sealing effect. This design includes a driver device interacting with the frame-side actuating device to initiate the offset of the vertical sections, ensuring reliable sealing and operation at high speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lip seals are used to seal the movement gap between the door leaf and door opening in high-speed operation, then sealing is achieved, but the sealing elements are subject to considerable wear and tear
Solution Approach 1:
Instead of having the door leaf slide against stationary sealing elements on the frame, the invention inverts the approach by making the vertical sections of the guides movable relative to the frame. This causes the door leaf to be pressed against the sealing elements by the moving guides rather than sliding along them, fundamentally changing the wear pattern and reducing sealing element wear
Solution Approach 2:
The vertical sections of the guides are designed to be displaceable in the direction towards the outside of the door, transforming a static guide system into a dynamic one. This displacement capability allows the system to actively press the door leaf against the sealing elements, improving sealing reliability while reducing wear on the sealing elements themselves
2Ease of operation
If spring devices are used to return the vertical sections to initial position, then the door leaf can be moved into the lintel sections, but the spring devices are subject to considerable wear and tear
Solution Approach 1:
The invention introduces an actuating device as an intermediary between the door leaf movement and the spring device. This actuating device, which can be a cam mechanism or hydraulic cylinder, mediates the return motion of the vertical sections, reducing the wear and reliability issues associated with direct spring device operation
Solution Approach 2:
The invention replaces the purely mechanical spring-based return system with a hybrid system that incorporates an actuating device. This substitution reduces the wear and reliability problems associated with continuous spring compression and expansion cycles
3Reliability
If the vertical section is inclined to the plane of the gate opening, then sealing is achieved, but the sealing elements continue to be exposed to considerable wear
Solution Approach 1:
The invention inverts the traditional sealing approach by making the guides movable rather than having the door leaf slide against fixed inclined sealing elements. This causes the sealing action to occur through the movement of the guides pressing the door leaf against the seals, rather than the door leaf sliding along the seals
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a lifting door (1), comprising a movable door leaf (6) formed by slats (61) pivotably connected to each other and comprising building-mounted frames (2). Lateral guides (3) for the door leaf (6), which have a vertical section (32) and a lintel section (31), and frame sealing elements (51) of a sealing device (5) are arranged thereon. The frame sealing elements close a gap between the door leaf (6) and a section of the frames (2) facing the door opening when the lifting door (1) is closed. The vertical sections (32) of the guides (3) can be moved perpendicularly to the door leaf plane and are supported on the frames (2) in a stationary manner in the direction of motion of the door leaf (6; 6'), whereby the door leaf (6) can be pressed against the sealing device (5) in the direction of the outside of the door when the lifting door (1) is closed. The invention further relates to a frame (2), a guide (3), and a corresponding method. Thus an improved sealing effect between the door leaf (6) and the door opening can be created, wherein at the same time high reliability during operation is achieved and high motion speeds are enabled.