Choker Ring Segmented Sliding Area for Friction Reduction
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Solution Overview
Problem
Sliding rope rings, or choker rings, used in log transportation experience significant wear and stress due to friction with traction cables, leading to potential breakage and safety risks, as well as wear on the cables themselves.
Innovation Solution
A sliding cable ring design featuring a teardrop-shaped passage with a movable, replaceable cable sliding area, which can be a round body like a roller, reduces friction and allows for material adaptation to extend service life and safety, ensuring stability even if the sliding area is defective.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the choker ring is used for transporting logs with constant movement on the pull rope, then the log transportation function is achieved, but the material at the contact point is abraded leading to wear and potential breakage
Solution Approach 1:
The choker ring is divided into two main parts: the ring body and the cable sliding area. The cable sliding area can be detached and replaced independently when worn, while the ring body remains in use. This segmentation allows the wear-prone component to be replaced without discarding the entire choker ring, thus maintaining reliability while continuing log transportation operations.
Solution Approach 2:
The cable sliding area is made from different materials with varying hardness levels depending on the application requirements. By selecting appropriate material parameters (hardness, friction coefficient), the cable sliding area can be optimized to reduce wear on both the choker ring and the pull rope, thereby extending service life and improving reliability.
2Object-affected harmful factors
If the cable sliding area is made from softer material, then wear on the pull rope is reduced, but the cable sliding area wears faster itself
Solution Approach 1:
The material hardness of the cable sliding area can be selected based on the desired outcome: softer materials reduce wear on the pull rope but wear faster themselves, while harder materials last longer but increase wear on the rope. This parameter adjustment allows optimization for different operational priorities.
Solution Approach 2:
The cable sliding area is designed as a consumable component that can be replaced when worn. By deliberately allowing the cable sliding area to wear (using softer material), the pull rope is protected and has extended service life. The worn cable sliding area is discarded and replaced, which is economically favorable compared to replacing the entire choker ring or the expensive pull rope.
3Duration of action of stationary object
If the cable sliding area is made from harder material, then service life of the cable sliding area is increased, but wear on the pull rope increases
Solution Approach 1:
By selecting harder materials for the cable sliding area, the service life of this component is extended. However, this increases the friction and wear on the pull rope. The detachable design allows this trade-off to be managed by replacing only the cable sliding area when necessary.
4Strength
If the choker ring structure is made closed and stable, then it can absorb weight forces during log transportation, but it cannot accommodate replacement of the cable sliding area
Solution Approach 1:
The choker ring is segmented into the closed ring body (which provides structural strength to absorb weight forces) and the detachable cable sliding area. The connection between these parts allows the cable sliding area to be removed and replaced while maintaining the structural integrity of the ring body during operation.
Solution Approach 2:
The connection between the cable sliding area and the ring body is designed to be dynamic - fixed during operation to maintain structural strength, but removable for maintenance. This allows the system to switch between requiring structural integrity and requiring ease of repair depending on the operational phase.
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 design significantly reduces wear on both the cable ring and traction cable, enhances operational safety, and allows for versatile application by enabling material adjustments and easy replacement of worn parts, thereby extending the service life of both components.
Implementation Method 1
If the cable sliding area is movably attached to the cable slide ring, then this can—for example designed as a round body—reduce the frictional forces on the cable slide ring significantly. It is very advantageous if the cable sliding area is designed as a round body, preferably as a roller or drum.
Data Source
Figure 1~2b
Figure 3
Figure 4~5
AI summary
Rope sliding ring (1), in particular choker ring, for attaching a choker loop (2), in particular choker strap, which is placed around the elongated object (20) on a pull rope (3) for transporting an elongated object (20), in particular a tree trunk, wherein the pull rope (3) is guided in a passage (4) of the rope sliding ring (1), wherein the passage (4) of the rope sliding ring (1) is formed by at least two components, one of which forms a defined rope sliding area (5).