Multi-Strand Cable Winch Winding to Prevent Cable Cutting
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Solution Overview
Problem
Existing cable winches with multiple layers face issues such as cable cutting, excessive wear, and operational instability due to varying cable diameters and low transverse elasticity, particularly with fiber ropes, leading to reduced service life and unsafe load oscillations.
Innovation Solution
Winding multiple cables or cable ends simultaneously in adjacent strands with a constant pitch and alternating pattern, combined with a reeling device for controlled cable guidance, prevents cutting and stabilizes the winding process, allowing for smaller drum diameters and reduced torque requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the cable is wound on the cable drum in a plurality of layers to achieve large winding capacity, then the winding capacity is improved, but the cable may cut into the underlying layer leading to excessive wear and reduced service life
Solution Approach 1:
The patent applies local quality by creating alternating winding patterns where different cable segments are positioned at different radial heights. Specifically, cables are wound such that they alternate between higher and lower positions on the drum, creating a staggered arrangement that prevents any single cable from consistently pressing against the same underlying layer, thereby distributing wear locally across different regions.
Solution Approach 2:
The patent introduces a dimensional change by transitioning from a single-layer winding to a multi-layer alternating winding pattern. The cable is wound in multiple layers with alternating positions, effectively utilizing the radial dimension of the drum to create a three-dimensional winding structure that prevents cable cutting while maintaining high winding capacity.
2Adaptability or versatility
If the cable diameter varies or transverse elasticity is low (as with fiber ropes), then the cable is more prone to cutting into underlying layers, but increasing cable diameter tolerance reduces manufacturing precision
Solution Approach 1:
The patent applies parameter changes by modifying the winding pitch and cable arrangement pattern to accommodate variations in cable diameter. The alternating winding pattern with adjusted pitch parameters allows the system to adapt to different cable diameters and elasticities, including fiber ropes with low transverse elasticity, without requiring strict manufacturing precision.
Solution Approach 2:
The patent segments the winding process into multiple alternating layers with different positional arrangements. Instead of winding all cables uniformly in a single pattern, the cable is divided into segments that are wound in alternating sequences, allowing each segment to accommodate diameter variations independently while maintaining overall winding integrity.
3Reliability
If the cable cuts into the underlying layer during winding, then excessive wear occurs and cable tension irregularities arise, but preventing this requires complex winding control systems
Solution Approach 1:
The patent applies preliminary action by pre-establishing an alternating winding pattern that inherently prevents cable cutting before the problem can occur. The winding system is configured in advance to create the alternating high-low cable arrangement, which proactively eliminates the conditions that lead to cable cutting, tension irregularities, and wear without requiring complex real-time control systems.
Solution Approach 2:
The alternating winding pattern creates a self-regulating system where the cable arrangement automatically prevents cutting into underlying layers. The geometric configuration of alternating high and low cable positions ensures that no single cable consistently contacts the same underlying layer, allowing the winding system to maintain cable tension stability through its own structure rather than external control mechanisms.
Data Source
AI summary
The invention relates to a method for winding a cable winch, in which method a plurality of cable winding layers is wound one over the other, a plurality of cables being wound, in multiple strands, onto the same winding region of the cable winch such that the cables are adjacent to each other in the same cable winding layer.