V-Ribbed Belt Fabric Structure for Low-Noise, Low-Wear Drive
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Solution Overview
Problem
V-ribbed belts experience noise development, wear, and mechanical energy losses due to friction and static/dynamic friction interactions with pulleys, which complicates their service life and efficiency.
Innovation Solution
A V-ribbed belt design with a fabric overlay having a higher weft thread mass fraction than warp thread mass fraction, featuring an elastic base body made from a vulcanizate with a textured fabric layer that reduces friction and noise through improved elasticity and deformation capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional fabric covering with lower weft thread mass fraction than warp thread mass fraction is used, then the belt structure is simpler and easier to manufacture, but noise generation increases and wear resistance decreases
Solution Approach 1:
The patent changes the mass fraction parameters of the fabric threads, specifically making the weft thread mass fraction greater than the warp thread mass fraction (weft/warp > 1). This parameter inversion resolves the technical contradiction by reducing noise generation and improving wear resistance while accepting increased manufacturing complexity.
2Reliability
If a conventional fabric covering with lower weft thread mass fraction than warp thread mass fraction is used, then the manufacturing process is simpler, but wear resistance decreases
Solution Approach 1:
The patent applies parameter changes by inverting the conventional thread mass fraction ratio. By making the weft thread mass fraction greater than the warp thread mass fraction, the fabric covering achieves improved wear resistance and reliability, while the complexity of the fabric configuration increases.
3Loss of energy
If the fabric layer has higher weft thread mass fraction, then friction losses are reduced and mechanical efficiency improves, but the manufacturing precision requirements increase
Solution Approach 1:
The patent changes the energy loss parameter by inverting the thread mass fraction ratio (weft > warp). This parameter change reduces friction losses and improves mechanical efficiency, while simultaneously increasing the manufacturing precision requirements for controlling the thread mass fractions during production.
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 noise, friction, and wear, leading to a longer service life and improved mechanical efficiency by enhancing the belt's ability to deform around pulleys without failure, while maintaining effective force transmission.
Implementation Method 1
an elastic base body based on a vulcanizate, wherein the base body has a belt backing and a power transmission zone
Implementation Method 2
a fabric layer rests in the power transmission zone, the fabric layer comprising warp threads with a warp thread mass fraction and weft threads with a weft thread mass fraction
Data Source
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AI summary
The invention relates to a drive belt comprising an elastic base body based on a vulcanizate, wherein the base body has a belt backing and a power transmission zone opposite the belt backing with a power transmission profile, and wherein a fabric layer rests in the power transmission zone, the fabric layer comprising warp threads with a certain mass fraction and weft threads with a certain mass fraction, wherein the warp threads are arranged running in the direction of travel of the drive belt and the weft mass fraction is greater than the warp mass fraction. The invention further relates to a method for manufacturing such a drive belt and to the use of such a drive belt.