Commercial Vehicle Wheel Hub Structure for Easier Rim Detachment
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Solution Overview
Problem
Existing wheel hubs for utility vehicles require high manufacturing complexity and do not efficiently facilitate the detachment of wheel rims due to extensive contact surfaces, leading to corrosion and difficulty in removal.
Innovation Solution
A wheel hub design featuring a hollow section transitioning into a flange section with radially set back intermediate sections, created through machining, reduces the contact surface and facilitates easy detachment of wheel rims by defining a centering outer diameter via centering sections and intermediate sections, allowing for low manufacturing outlay and accurate production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the hollow section is equipped with centering sections and intermediate sections to define a centering outer diameter, then the wheel rim centering accuracy is improved, but the manufacturing complexity increases
Solution Approach 1:
The hollow section is segmented into centering sections and intermediate sections along its circumference. The centering sections define the centering outer diameter while the intermediate sections are radially set back, creating a segmented structure that provides both precise centering functionality and reduced contact surface area for corrosion prevention.
Solution Approach 2:
Different regions of the hollow section are given different radial positions: centering sections maintain the full outer diameter for accurate wheel rim centering, while intermediate sections are radially set back to reduce contact surface. This local differentiation allows each region to fulfill its specific function optimally.
2Object-affected harmful factors
If the contact surface between wheel rim and hollow section is reduced through intermediate sections, then corrosion is reduced and detachment is easier, but the manufacturing precision requirements increase
Solution Approach 1:
The intermediate sections are designed to be radially set back from the centering sections, preliminarily reducing the contact surface area between the wheel rim and hollow section. This design prevents extensive corrosion contact areas before corrosion can occur, making future detachment easier while the machining follows a clear geometric definition.
Solution Approach 2:
By segmenting the hollow section into centering and intermediate sections with different radial positions, the contact surface is naturally reduced. The intermediate sections create gaps that prevent continuous contact between the wheel rim and hollow section, thereby reducing corrosion while the segmentation provides clear manufacturing boundaries.
3Ease of manufacture
If the wheel hub is designed as a cast part with hollow and flange sections, then the manufacturing outlay is reduced, but the detachment of wheel rims becomes difficult due to extensive contact surfaces
Solution Approach 1:
The hollow section is segmented into centering sections and intermediate sections, where the intermediate sections are radially set back. This segmentation reduces the contact surface area between the wheel rim and hollow section, preventing extensive corrosion and facilitating easier wheel rim detachment while maintaining the cost-effective cast part manufacturing approach.
Solution Approach 2:
The hollow section exhibits local quality variations with centering sections at the full outer diameter and intermediate sections radially set back. This local differentiation reduces the contact surface area in specific regions, preventing corrosion without requiring a complete redesign of the entire wheel hub structure, thus maintaining manufacturing simplicity.
Data Source
AI summary
A wheel hub for a utility vehicle drive axle includes a hollow section extending between a first axial end and a second axial end. The hollow section has centering sections defining a centering outer diameter of the hollow section for centering at least one wheel rim on the hollow section. The centering sections are separated from one another in the circumferential direction by intermediate sections, each of the intermediate sections being radially recessed relative to the centering sections. The intermediate sections are formed by machining the hollow section between the centering sections. The wheel hub has a flange section transitioning from the first axial end of the hollow section, the flange section projecting radially outwards relative to the hollow section, with the at least one wheel rim being couplable to the flange section.