Flexible Rolling Contact Test Rig for Current-Carrying Wear
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Solution Overview
Problem
Existing testing devices primarily focus on rigid rolling friction pairs, which are inadequate for testing the current-carrying friction and wear performance of flexible rolling friction pairs used in high-power, long-life rolling rings. Additionally, these devices often neglect the degradation patterns of current-carrying performance, limiting their practicality.
Innovation Solution
A testing device specifically designed for the current-carrying friction and wear performance of flexible rolling friction pairs, featuring a base plate, supporting profiles, guiding rail sliders, a screw assembly, a motor, and a flexible rolling electrical contact component. This device allows for continuous adjustment of shaft spacing, online monitoring of preload, and simultaneous measurement of friction performance, current-carrying capacity, and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing testing devices are used for rigid rolling friction pairs, then the testing structure is simple and well-established, but they cannot test the current-carrying friction and wear performance of flexible rolling friction pairs
Solution Approach 1:
The patent introduces a movable supporting plate that can adjust its position along the guiding rail, transforming the rigid fixed structure into a dynamic adjustable one. This allows the device to adapt to different testing requirements for flexible rolling friction pairs while maintaining structural integrity
Solution Approach 2:
The testing device is divided into modular components: a fixed supporting plate for stability, a movable supporting plate for adjustment, and a screw assembly for precise positioning. This segmentation allows each component to perform its specific function independently, enhancing overall adaptability
2Measurement precision
If traditional testing devices focus only on friction coefficient and wear rate, then the device structure is simple, but they neglect the degradation patterns of current-carrying performance
Solution Approach 1:
The torque sensor body serves multiple functions: it measures both the friction torque and monitors the current-carrying performance degradation simultaneously. This multi-functionality allows comprehensive measurement without significantly increasing device complexity
Solution Approach 2:
The torque sensor body acts as an intermediary measurement tool that translates mechanical torque into electrical signals for analysis. This intermediary function enables precise measurement of current-carrying performance degradation through the relationship between friction torque and electrical contact quality
3Adaptability or versatility
If the movable supporting plate cannot adjust spacing, then the device structure is simple, but it cannot accommodate different testing requirements for flexible rolling friction pairs
Solution Approach 1:
The patent replaces complex mechanical linkage systems with a screw assembly for spacing adjustment. The screw thread mechanism converts rotational motion into linear displacement, providing precise and controllable adjustment of the movable supporting plate position without requiring complex mechanical structures
Data Source
AI summary
A testing device for a current-carrying friction and wear performance of a flexible rolling friction pair, including a base plate, supporting profiles, and guiding rail sliders, and a screw assembly, and a movable supporting plate, and a fixed supporting plate, and first bearing supports, and a slider supporting plate, during the testing process, friction moment and friction force of the flexible rolling electrical contact component can be obtained by monitoring dynamic torque of rotating wheel, which is wide applicability, which allows simultaneous online monitoring of multiple experimental variables such as friction performance, current-carrying capacity, preload, friction force, and temperature; and at the same time, there is no need to adjust, assemble, or test multiple objects for the rolling ring structure; the testing process can be completed by only adjusting and testing the key electrical contact test piece, significantly simplifying the testing structure and method while reducing testing costs.