Polymer Fiber Pulling Rope Structure to Reduce Break Rebound
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Solution Overview
Problem
Steel wire ropes used in winches for lifting heavy objects can rebound violently upon breaking, posing safety risks to workers due to their high rebound force, especially in industries like fishery and mining.
Innovation Solution
A flexible pulling rope made of macromolecular polymer fibers with a main rope body and sleeve structure, enhanced with adhesive tape layers, connecting ropes, and protective sleeves, providing high tensile strength, low resilience, and improved safety features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel wire rope is used for lifting heavy objects, then high strength and rigidity are achieved, but high rebound force causes safety hazards when broken
Solution Approach 1:
The patent changes the material parameter from steel wire rope to macromolecular polymer fiber (specifically ultra-high molecular weight polyethylene), which fundamentally alters the elastic properties. This material substitution maintains high tensile strength while dramatically reducing the rebound force, solving the safety hazard without sacrificing lifting capability
Solution Approach 2:
The patent employs composite material construction by combining macromolecular polymer fibers with protective coatings (adhesive tape layers, plastic layers, and protective sleeves). This composite structure enhances both the strength and the safety characteristics, creating a material system that resists breaking while minimizing rebound effects
2Object-affected harmful factors
If macromolecular polymer fiber is used instead of steel wire rope, then rebound force is reduced and safety is improved, but need for protective structures increases device complexity
Solution Approach 1:
The patent implements a nested protective structure where the macromolecular polymer fiber rope is surrounded by multiple concentric protective layers: adhesive tape layers, plastic layers, and protective sleeves. Each layer is nested within the next, creating a compact multi-layered protection system that safeguards the core fiber structure while managing the complexity through organized layering
Solution Approach 2:
The patent applies beforehand cushioning by incorporating protective sleeves and coating layers that prevent damage to the macromolecular polymer fiber before it can break. These protective structures absorb and distribute mechanical stresses, preventing sudden failure and reducing the need for complex emergency safety mechanisms
3Strength
If protective sleeves and adhesive tape layers are added, then connection strength is improved, but manufacturing process becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-coating the macromolecular polymer fiber with adhesive tape layers and plastic layers before final assembly. These preliminary protective coatings are applied in advance to protect the fiber during subsequent handling and assembly processes, ensuring connection strength is established before the rope is put into service
Solution Approach 2:
The patent uses flexible protective shells and thin film coatings (adhesive tape layers and plastic layers) that conform to the fiber structure. These flexible protective elements provide strength and protection while being relatively simple to apply compared to rigid protective structures, balancing manufacturing ease with connection strength
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 flexible pulling rope design enhances strength, reduces rebound force, and improves safety by using polyethylene fibers with ultra-high molecular weight, allowing for higher load-bearing capacity and safer operation while preventing damage to the connecting parts.
Implementation Method 1
a first adhesive tape layer, wherein the first adhesive tape layer is wound on an outer surface of a connecting end of the connecting part and an outer surface of a connecting end of the main rope sleeve
Implementation Method 2
the protective sleeve includes a sheet material and two hook and loop fasteners, wherein the two hook and loop fasteners are respectively connected to two side edges of the sheet material; and the two hook and loop fasteners are detachably connected to each other
Data Source
AI summary
A flexible pulling rope includes a main rope body and a main rope sleeve. The main rope body is formed by connecting a rope from head to tail. The main rope body includes a connecting part formed by two parallel ropes and two pulling parts located at two ends of the connecting part. The main rope sleeve sleeves the connecting part. Two ends of the main rope sleeve are respectively connected to two ends of the connecting part. A method for manufacturing a flexible pulling rope is also provided. By the arrangement of the above structure, the two ends of the main rope sleeve are respectively connected to the two ends of the connecting part. This can not only form a whole by the connecting part and the main rope sleeve, improve the strength of the product, and make the product bear higher loads when pulling heavy objects.