Tire Rim Compensating Means for Air Loss Prevention
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Solution Overview
Problem
Current multi-piece tire rims for low-speed heavy load transportation are prone to air loss due to inaccurate coupling between the tubular body and bead-seats, requiring expensive and time-consuming high precision manufacturing methods.
Innovation Solution
A tire rim design featuring compensating means between the bead-seat and tubular body, including a mobile annular element and an O-ring gasket, to address thickness differences and prevent air loss, while allowing for easier and faster manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high precision manufacturing methods (forging or lathing) are used to achieve accurate coupling between tubular body and bead-seats, then manufacturing precision and reliability are improved, but manufacturing cost and time increase significantly
Solution Approach 1:
The invention changes the geometric parameters of the bead-seat, specifically providing it with a conical shape having a predetermined angle instead of a cylindrical shape. This parameter change allows the bead-seat to self-align and compensate for thickness variations in the tubular body, achieving accurate coupling through geometric design rather than high precision manufacturing
Solution Approach 2:
The invention introduces a mobile compensating element that can move axially within the bead-seat to dynamically adjust for thickness variations in the tubular body. This dynamic compensation mechanism maintains proper coupling accuracy while accommodating manufacturing tolerances without requiring expensive high precision manufacturing processes
2Force
If the bead-seat is pressed by the weight of the load, then the coupling between tubular body and bead-seat is maintained, but the bead-seat becomes deformed causing air loss from the tire
Solution Approach 1:
The conical shape of the bead-seat with predetermined angle distributes the load more evenly and prevents excessive localized pressure that causes deformation. The geometric design inherently compensates for thickness variations, maintaining proper contact pressure without causing bead-seat deformation that would lead to air loss
Solution Approach 2:
The mobile compensating element acts as an intermediary between the bead-seat and the tubular body, absorbing excessive pressure and preventing direct transmission of deforming forces to the bead-seat. This intermediary mechanism protects the bead-seat from deformation while maintaining coupling under load
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 effectively compensates for thickness differences between the bead-seat and tubular body, reducing air loss and enhancing rim resistance to heavy loads, while simplifying and reducing the cost of production.
Implementation Method 1
an O-ring gasket, to address thickness differences and prevent air loss
Implementation Method 2
A tire rim design featuring compensating means between the bead-seat and tubular body, including a mobile annular element
Data Source
AI summary
A rim for a tire for means of displacement preferably for heavy loads at low-speed. The rim may include a main tubular body having a cylindrical surface extending between two lateral edges, a bead-seat having a greater diameter than the cylindrical surface of the tubular body and overlapped to it and at least a side-ring being overlapped to one of the lateral edges for the lateral containment of the tire. The rim may include compensating means interposed between the cylindrical surface of the tubular body and the bead-seat and in contact with them to realise a compensation in thickness.