Elevator Rope Clamp with Elastic Intermediate Part
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Solution Overview
Problem
Existing rope clamps for elevators often damage fragile or soft material ropes due to strong compression required for reliable holding capacity, which is not evenly distributed, leading to potential rope damage.
Innovation Solution
A rope clamp design featuring a metallic face part and an elastic intermediate part made of elastomer, allowing for even force distribution and gentle clamping, with a metallic body part to control the clamping force, ensuring a wide contact area and minimizing peak pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strong compression is applied by the rope clamp to ensure reliable holding capacity, then the holding capacity is improved, but the rope is damaged
Solution Approach 1:
An elastic intermediate part is introduced between the metallic body part and the metallic face part of the clamping member. This elastic intermediate part acts as a mediator that distributes the clamping force evenly across the rope surface, preventing localized high pressure points that would cause rope damage while maintaining sufficient overall holding capacity.
Solution Approach 2:
The clamping member is constructed as a composite structure combining metallic body part, elastic intermediate part, and metallic face part. This composite design allows the metallic parts to provide structural strength and force transmission, while the elastic intermediate part provides gentle, distributed contact with the rope, resolving the contradiction between strong compression and rope protection.
2Force
If strong compression is applied by the rope clamp to maintain grip against pull force, then the holding capacity is improved, but the compression force damages fragile or soft material ropes
Solution Approach 1:
The elastic intermediate part serves as a force-distributing intermediary between the metallic clamping structure and the fragile rope. It transforms the concentrated force from the metallic parts into a distributed, gentle pressure across the rope surface, maintaining holding capacity without causing damage to fragile or soft material ropes.
Solution Approach 2:
The elastic intermediate part changes the pressure distribution parameter from concentrated high pressure to distributed low pressure. This parameter transformation allows the clamping member to maintain sufficient total holding force while reducing the peak pressure to levels that do not damage fragile or soft material ropes.
3Reliability
If the rope clamp compresses the ropes very strongly to provide reliable holding capacity, then the holding capacity is improved, but the evenness of compression is poor leading to localized damage
Solution Approach 1:
The elastic intermediate part acts as a force-distributing intermediary that equalizes compression across the entire contact surface with the rope. Its elastic properties allow it to conform to the rope surface and distribute pressure evenly, preventing localized high compression zones that would cause damage while maintaining overall holding capacity.
Solution Approach 2:
The elastic intermediate part creates homogeneous pressure distribution across the rope contact surface. By transforming the non-uniform compression from the metallic parts into uniform pressure through its elastic deformation, it ensures even compression throughout the clamping area, improving both reliability and preventing localized damage.
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
The solution provides a reliable and gentle clamping mechanism that effectively engages ropes with fragile materials, ensuring a high holding capacity without damaging the ropes, by evenly distributing clamping forces and minimizing permanent deformation.
Implementation Method 1
an elastic intermediate part made of elastic material between the body part and the face part for elastically transmitting force between the body part and the face part
Data Source
AI summary
A rope clamp for clamping one or more ropes includes a first clamping member having a first clamping face for being set against one or more ropes to be clamped and a second clamping member having a second clamping face for being set against one or more ropes to be clamped. The clamping faces defining a gap (between them) for receiving one or more ropes. The clamping members are relatively movable towards each other such that the gap is narrowed. The first clamping member and/or the second clamping member includes a metallic face part forming the clamping face of the clamping member, a metallic body part on the back side of the face part, and an elastic intermediate part made of elastic material between the body part and the face part for elastically transmitting force between the body part and the face part.