Multi-Layer Bead Wire Adapter for Rolling Assembly Shock Resistance
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Solution Overview
Problem
Existing adapters for tire and rim assemblies lack sufficient deformability to absorb impacts from road conditions such as potholes, leading to potential damage and breakage, and do not provide optimal mechanical characteristics for shock resistance.
Innovation Solution
An adapter with an axially outer end comprising a twisted annular structure made of concentric metal wire layers, designed to enhance radial deformability and axial flexibility, allowing for significant deformation during impacts while maintaining handling performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the adapter is made with conventional single-layer bead wire structure, then the manufacturing is simpler, but the shock absorption capability and deformability are insufficient
Solution Approach 1:
The adapter employs a composite bead wire structure consisting of three concentric layers: an inner core layer, a middle layer, and an outer layer. Each layer has specific material properties and structural characteristics that contribute to different functions. The inner core provides structural support, the middle layer enhances flexibility, and the outer layer improves shock absorption. This composite structure enables the adapter to simultaneously achieve high strength, good deformability, and effective shock absorption capability.
Solution Approach 2:
The bead wire is constructed with a nested concentric layer structure where the middle layer is wound around the inner core, and the outer layer is wound around the middle layer. This nested configuration allows each layer to contribute its specific mechanical properties while maintaining a compact integrated structure. The concentric arrangement ensures that the adapter can deform radially and axially under impact loads, improving shock absorption without excessive complexity.
2Stability of the object's composition
If the adapter uses a rigid structure to maintain handling performance, then the handling stability is improved, but the deformability during impacts is reduced
Solution Approach 1:
The adapter implements different structural characteristics in different regions and layers. The inner core layer has higher rigidity to maintain handling stability and structural integrity during normal operation. The middle and outer layers have progressively increased flexibility and deformability to absorb impact energy. This local differentiation of mechanical properties allows the adapter to maintain handling stability under normal conditions while exhibiting adequate deformability during impacts.
Solution Approach 2:
The multi-layer bead wire structure enables the adapter to dynamically adjust its mechanical response based on loading conditions. During normal handling, the rigid inner core maintains structural stability. During impacts, the flexible middle and outer layers can deform radially and axially to absorb energy. The progressive engagement of different layers under different load conditions provides both handling stability and impact adaptability.
3Reliability
If the adapter uses conventional bead wire structure, then the manufacturing cost is lower, but the resistance to residual plastic deformation and breakage is insufficient
Solution Approach 1:
The adapter uses a composite bead wire structure with three concentric layers, each having different material compositions and structural characteristics. The inner core layer provides fundamental structural support, the middle layer adds flexibility and damage tolerance, and the outer layer enhances resistance to breakage and plastic deformation. This composite construction significantly improves reliability and resistance to failure under impact conditions compared to conventional single-layer bead wire.
Solution Approach 2:
The flexible middle and outer layers of the bead wire structure serve as pre-configured cushioning elements that engage during impacts to absorb energy before it reaches the rigid inner core and other critical components. This beforehand cushioning capability protects the adapter and the rolling assembly from damage by dissipating impact energy through controlled deformation of the outer layers.
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 adapter significantly reduces mechanical forces on the vehicle during impacts, improves mechanical strength, and allows for better shock absorption, thereby protecting the tire and rim from damage while maintaining handling performance.
Implementation Method 1
the outer reinforcing element being an annular structure, called bead wire, having an average line and being constituted by a stack of at least three layers consisting of wires metallic and concentric with respect to the middle line
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to an adaptor (A) for a rolling assembly comprising a tyre (P) and a rim (J), said adaptor being intended to provide the connection between the tyre and the rim and aimed at increasing the shock resistance thereof. The adaptor (A) comprises an axially inner end (10) with an inner reinforcing element (16), an axially outer end (9) with an outer reinforcing element (15) and a body (11). According to the invention, the outer reinforcing element (15), axially on the outside of the bearing face (21), is a bead wire consisting of a stack of at least three layers (23, 24, 25) consisting of metallic and concentric filaments. A first layer or core (23) comprises at least one metal filament having a diameter D1 at least equal to 0.8 mm and at most equal to 5 mm, a second layer (24) consists of a metal filament having a diameter D2 at most equal to 1.4 times the diameter D1 and wound in a helix at an angle A2 at least equal to 2° and at most equal to 10° and a third layer (25) consists of a metal filament having a diameter D3 and wound in a helix around the second layer (24) at an angle A3 at least equal to 2° and at most equal to 10° and of opposite sign to that of the angle A2.