Elevator Guide Rail Bracket with Movable Mounting Base
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Solution Overview
Problem
Existing elevator guide rail fixing solutions face issues with large manufacturing tolerances and excessive compression force, leading to bulging and reduced drive comfort due to insufficient sliding between guide rails and clamps, which can cause the guide rail to compress into a curve.
Innovation Solution
The guide rail is fixed against a mounting base that is movable relative to the building, allowing for longitudinal movement without lateral displacement, using a frame and mounting base with guide surfaces and friction-reducing coatings to ensure reliable and precise alignment, reducing the impact of manufacturing tolerances and preventing excessive compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the guide rail clamp presses the guide rail against the base with large compression force to prevent lateral movement, then the guide rail is securely fixed laterally, but the excessive compression force prevents sliding between the guide rail and clamp, causing the guide rail to compress into a curve and bulge
Solution Approach 1:
The bracket is divided into two functional parts: a fixed part rigidly connected to the building for lateral support, and a movable part that can slide along the guide rail's longitudinal axis. This segmentation allows the fixed part to provide strong lateral fixing while the movable part accommodates longitudinal movement, preventing excessive compression on the guide rail.
Solution Approach 2:
The bracket transitions from a static, rigid structure to a dynamic system where the movable part can slide along the guide rail. This dynamic capability allows the bracket to adapt to longitudinal movements of the guide rail due to thermal expansion, concrete shrinkage, or other dimensional changes, preventing the guide rail from compressing into a curve.
2Stability of the object's composition
If a rigid guide rail bracket is used to firmly secure the guide rail, then lateral stability is improved, but the bracket does not accommodate building dimensional changes (concrete shrinkage), causing compression of the guide rail line into a curve
Solution Approach 1:
The bracket incorporates a movable part that can slide along the guide rail's longitudinal axis, transforming the rigid structure into a dynamic system. This allows the bracket to maintain lateral stability through the fixed part while adapting to longitudinal dimensional changes through the sliding mechanism, accommodating concrete shrinkage and thermal expansion.
Solution Approach 2:
The movable part acts as an intermediary between the fixed building structure and the guide rail. It transfers lateral support forces from the fixed part to the guide rail while allowing longitudinal movement, mediating between the need for stable fixing and the need to accommodate building dimensional changes.
3Ease of manufacture
If the guide rail clamp is designed with simple structure for ease of manufacture, then manufacturing cost is reduced, but the clamp structure does not give way sufficiently when a thick point of the guide rail slides to it, pressing the guide rail against the base with too great a force
Solution Approach 1:
The bracket is segmented into a fixed part for lateral support and a movable part for longitudinal adjustment. This segmentation allows the movable part to give way under compression from thick points of the guide rail, reducing excessive compression forces while maintaining a relatively simple overall structure that is easy to manufacture.
Solution Approach 2:
The movable part introduces dynamic capability to the otherwise simple bracket structure. When a thick point of the guide rail slides against the clamp, the movable part can slide along the longitudinal axis, allowing the structure to give way sufficiently and reduce compression forces without requiring complex mechanical elements.
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 enhances the reliability and safety of the elevator by allowing for precise movement of the guide rail without shape deformation, reducing the risk of bulging and maintaining drive comfort while minimizing manufacturing costs.
Implementation Method 1
The guide surfaces are fitted for guiding the guide surfaces of the frame... Friction-reducing coatings to ensure reliable and precise alignment
Data Source
Figure 1~3
Figure 4~7
AI summary
Elevator, which comprises a guide rail line, which comprises a plurality of consecutive guide rails, which are supported on the building with guide rail brackets (1) fixed to the building, which guide rail brackets comprise a frame (2), a mounting base (5) and means (4, 6, 7, 40) for pressing the guide rail (3) against the mounting base (5), which guide rail bracket (1) essentially prevents at its point lateral movement of the guide rail (3) in relation to the fixing point of the guide rail bracket (1) and permits longitudinal movement of the guide rail in relation to the fixing point of the guide rail bracket (1). The aforementioned mounting base (5) is fixed to the frame (2) of the guide rail bracket (1) movably in the longitudinal direction of the guide rail (3).