Eccentric Guide Wheel Wear Adjustment Mechanism
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Solution Overview
Problem
Conventional guide wheel devices for guide rail vehicles have complex structures that lead to rust, sticking, and looseness issues due to sliding wear and water intrusion, making maintenance complicated and costly, and are prone to adjustment errors and increased maintenance costs.
Innovation Solution
A guide wheel device with a simple structure featuring a wheel shaft with eccentric main guide wheels and branch guide wheels, utilizing fitting body receiving portions and a pressing mechanism with a spring and threaded structure to facilitate precise wear adjustment without requiring disassembly, ensuring stability during vehicle operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a complex structure with multiple components is used for wear adjustment, then the guide wheel can be adjusted, but the structure becomes complicated leading to rust, sticking, and looseness issues
Solution Approach 1:
The patent extracts the essential function of wear adjustment by removing unnecessary intermediate components. Instead of using a complex multi-component mechanism, the invention directly connects the adjustment screw to the guide wheel mounting structure, eliminating parts that could rust, stick, or loosen while preserving the core adjustment capability.
Solution Approach 2:
The patent inverts the traditional adjustment approach by making the guide wheel position directly adjustable through a simple screw mechanism rather than using a complex lever-and-bolt system. This inversion simplifies the structure by reversing the conventional wisdom of using multiple components for adjustment.
2Ease of operation
If a complex structure with multiple components is used for wear adjustment, then the guide wheel can be adjusted, but maintenance becomes complicated and costly
Solution Approach 1:
By extracting unnecessary intermediate components from the adjustment mechanism, the patent reduces the number of parts that require maintenance. The simplified structure with direct screw-to-mounting-structure connection eliminates potential failure points, making maintenance simpler and less costly.
3Ease of manufacture
If a simple structure is used, then manufacturing costs are reduced, but adjustment precision may be compromised
Solution Approach 1:
The patent achieves precise adjustment with a simple structure by carefully selecting and optimizing key parameters such as the screw thread pitch, screw diameter, and mounting hole positioning. These parameter changes allow a minimal-component design to deliver high adjustment precision without increasing manufacturing complexity.
4Reliability
If the guide wheel position is adjusted, then wear compensation is achieved, but adjustment errors may occur with complex mechanisms
Solution Approach 1:
The patent eliminates sources of adjustment error by removing intermediate components that could introduce play, misalignment, or mechanical failure. The direct connection between the adjustment screw and guide wheel mounting structure ensures accurate and reliable wear compensation without the errors that plague complex mechanisms.
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 solution allows for easy and quick wear adjustment of the main guide wheel, reducing maintenance costs and preventing adjustment errors, while maintaining the adjusted position under vehicle vibrations, and simplifies the manufacturing process with reduced processing costs and improved shaft strength.
Implementation Method 1
a pressing spring (27) that presses the fitting body (25) toward the wheel shaft (4)
Implementation Method 2
a pressing member (28) that presses the pressing spring (27) toward the fitting body (25), and reciprocates in a pressing direction by a threaded structure
Implementation Method 3
a main guide wheel (31) having a rotation center (C1) eccentric to an axis (C2) of the wheel shaft (4)
Data Source
AI summary
A guide wheel device for a guide rail vehicle includes a wheel shaft rotatably supported on a bearing, and a main guide wheel and a branch guide wheel rotatably mounted to upper and lower portions of the wheel shaft, wherein the main guide wheel has a rotation center eccentric to an axis of the wheel shaft, a plurality of fitting body receiving portions are provided in an outer peripheral surface of the wheel shaft so as to be arranged sequentially in a circumferential direction, a fitting body to be fitted into the fitting body receiving portions is provided in the bearing, and fitting adjusting means capable of pressing the fitting body against the fitting body receiving portions toward the wheel shaft or releasing the pressing of the fitting body is provided.