Waste Bin Wheel Tire with Porous Elastic Damping
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Solution Overview
Problem
Waste collection bins with wheels generate excessive noise and are prone to damage due to the transmission of shocks and vibrations through rigid hubs and solid, non-damping tires, which are heavy and require significant material for construction.
Innovation Solution
A wheel tire with a radially extending central web and interconnected ribs, forming a one-piece structure that provides flexibility and absorbs shocks and vibrations, reducing noise and weight while being suitable for molding from recycled materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solid and thick tire is used to ensure robustness and longevity, then the wheel becomes more durable, but the tire becomes very little deformable and transmits shocks and vibrations to the tank, causing noise
Solution Approach 1:
The tire incorporates a porous elastic material that allows deformation to absorb shocks and vibrations. The porous structure enables the material to compress and expand, providing damping effects while maintaining durability. This resolves the contradiction by allowing the tire to be both robust and deformable.
Solution Approach 2:
The tire uses a composite structure combining an elastic material with damping properties and a porous structure. This composite approach allows the tire to simultaneously achieve robustness for longevity and deformability for shock absorption, eliminating the need to choose between durability and noise reduction.
2Reliability
If a solid and thick tire is used to ensure robustness, then the wheel becomes more durable, but the weight of the wheel increases and more material is needed
Solution Approach 1:
The porous structure of the elastic material reduces the density and weight of the tire while maintaining its structural integrity and durability. The voids in the porous structure decrease mass without compromising strength, resolving the contradiction between durability and weight.
Solution Approach 2:
The composite elastic material with damping properties provides enhanced strength-to-weight ratio. This allows the tire to achieve robustness and durability with less material, reducing overall wheel weight while maintaining reliability.
3Object-generated harmful factors
If ridges are added to the bandage to create a partially flexible surface, then some damping effect is obtained, but the solution proves to be of reduced effectiveness
Solution Approach 1:
The porous elastic material provides superior damping effectiveness compared to surface ridges. The three-dimensional porous structure allows for greater deformation and energy absorption throughout the entire tire volume, not just at the surface, significantly improving noise reduction effectiveness.
Solution Approach 2:
The composite elastic material with inherent damping properties provides more effective noise reduction than surface ridges alone. The material's viscoelastic characteristics enable it to absorb and dissipate vibration energy more efficiently, achieving better damping effectiveness.
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 wheel tire significantly reduces noise pollution and extends the lifespan of the wheel and hub by absorbing shocks and vibrations, while minimizing material usage and weight, enhancing the durability and efficiency of waste collection bin wheels.
Implementation Method 1
the tire is generally a solid and thick element, which makes it very little deformable... The tire is therefore not very damping and transmits to the tank of the tank, without damping them or almost, the shocks and vibrations which it undergoes
Implementation Method 2
The tire is therefore not very damping and transmits to the tank of the tank, without damping them or almost, the shocks and vibrations which it undergoes
Data Source
AI summary
The invention relates to a tyre intended to be fitted to a rim of a wheel of a waste collection bin, said tyre (10) being of a generally annular shape and comprising: -an outer belt (14), an outer surface of which forming a rolling surface (18); -an inner belt (12) having a contact surface with the rim (20); the contact surface (20) being formed by the surface enclosing the vertices of a plurality of ribs (26, 28) extending radially and projecting from the inner belt (12) of the tyre (10). The invention also relates to a wheel fitted with such a tyre.