Tire Tread Pattern Selection via Slip Rate Analysis
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Solution Overview
Problem
The selection of tire tread patterns for construction vehicles is currently based on intuition and experience, lacking a quantitative approach to ensure the choice provides the best wear resistance under varying conditions, particularly in terms of TKPH value and traction performance.
Innovation Solution
A method and system that utilize running position and slip rate sensors to calculate the degree of road surface slip, correlating this data with optimal tread patterns for wear resistance, where a table is used to select tread patterns with either a small or large volume based on the slip rate, thereby optimizing wear resistance based on the specific conditions of the registered traveling path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the volume of groove portions is increased to enhance traction performance under wet conditions, then wear resisting period is prolonged, but the volume of land portions is reduced which may affect overall wear resistance
Solution Approach 1:
The invention changes the parameter of groove portion volume ratio in the tread pattern based on the calculated degree of road surface slip. When slip is high, the system selects tire species with larger groove portion volumes to enhance traction. When slip is low, it selects tire species with smaller groove portion volumes to maintain more land portions for wear resistance. This dynamic parameter selection resolves the contradiction between traction enhancement and wear resistance.
2Productivity
If tire species with higher TKPH value is selected to perform large conveyance mechanical work, then productivity is improved, but the selection becomes more constrained by heat generation limits
Solution Approach 1:
The invention performs preliminary calculation of the degree of road surface slip before tire selection. By预先 calculating the slip characteristics of the registered travelling path, the system can determine the appropriate groove portion volume ratio needed for traction. This preliminary action allows selection of tire species that optimize both productivity (TKPH) and thermal management within heat generation limits.
3Ease of operation
If conventional intuitive selection method is used for tire tread pattern, then ease of operation is maintained, but manufacturing precision of wear resistance prediction is insufficient
Solution Approach 1:
The invention replaces the mechanical/intuitive selection process with an automated calculation system. The system automatically calculates the degree of road surface slip using running position and slip rate data, then determines the optimal tire species based on predetermined criteria. This substitution eliminates subjective intuition while maintaining operational simplicity through automated decision-making.
Data Source
AI summary
The present invention provides a system for measuring slip rate of a tire for a construction vehicle, which system makes it possible to select based on a quantitative estimation a tire species that is the most advantageous in terms of wear resisting period among plural types of tire species having the same TKPH value and a method of selecting a tire tread pattern for a construction vehicle using the system. The system 10 for measuring slip rate of a tire for a construction vehicle includes a running position sensor 1 mounted in a construction vehicle 11, for continuously acquiring data of running position of the construction vehicle 11, a slip rate sensor 2 for continuously acquiring data of slip rate for at least one tire mounted on the construction vehicle 11, a memory 3 for storing data acquired by these sensors, and a calculation portion 5 for calculating based on the data stored in the memory 3 a slip rate distribution in which the slip rate range is divided into predetermined range sections and frequency ratios of the slip rates, measured in dry conditions at respective spots on a predetermined travelling path preset such that the construction vehicle runs, are plotted in the corresponding range sections.