Drive Belt Roller Sensing for Continuous Pretension Measurement
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Solution Overview
Problem
Current methods for measuring the prestressing force of traction mechanisms, such as drive belts, are limited by the inability to perform continuous measurements during operation and require costly, separate measuring devices, making it difficult to maintain optimal tension and prevent premature failure.
Innovation Solution
A device integrated into at least one roller of the traction drive measures contact pressure proportional to the prestressing force, generating an electronic signal that can be transmitted to a control device to adjust tensioning, allowing for direct and continuous measurement without the need for external equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vibration measuring devices are used to determine pretension force, then measurement capability is provided, but continuous measurement during operation is not possible
Solution Approach 1:
The patent replaces mechanical vibration-based measurement methods with a pressure-sensitive electronic sensor system. The sensor device detects contact pressure between the traction element and roller, converting mechanical pressure into electrical signals for continuous monitoring during operation, eliminating the need for stationary vibration measurements.
Solution Approach 2:
The measuring system is integrated directly into the roller of the traction drive, allowing the drive system itself to perform continuous self-monitoring of pretension force. The sensor device is embedded in or on the roller, enabling the system to monitor its own operational parameters without external intervention.
2Measurement precision
If separate measuring devices are used to measure pretension force, then measurement accuracy is achieved, but device complexity and cost increase
Solution Approach 1:
The patent combines the measurement function with the existing roller structure of the traction drive. The sensor device is integrated into or mounted on the roller, merging the measuring functionality with a component that already exists in the system, thereby avoiding the need for separate, complex external measuring devices.
Solution Approach 2:
The roller serves dual functions: it performs its original mechanical function in the traction drive while simultaneously serving as the mounting platform for the pressure-sensitive sensor device. This multi-functionality reduces the need for additional specialized components.
3Measurement precision
If periodic checks with drive stationary are performed, then pretension force can be determined, but maintenance costs and downtime increase
Solution Approach 1:
The patent enables continuous measurement of pretension force during normal operation of the traction drive. The electronic sensor device operates while the drive is running, providing uninterrupted monitoring of the traction element's pretension, eliminating the need to stop the drive for periodic measurements.
Solution Approach 2:
The patent replaces stationary vibration-based measurement methods with a pressure-sensitive electronic sensor system that operates continuously during drive operation. This substitution enables real-time monitoring without requiring the drive to be stopped or slowed down for measurements.
4Measurement precision
If conventional measuring methods are used, then pretension can be measured, but direct measurement on roller is not possible
Solution Approach 1:
The patent uses the contact pressure between the traction element and roller as an intermediary parameter to determine pretension force. The pressure-sensitive sensor device measures the contact pressure, which is directly proportional to the pretension force, providing a direct and accurate measurement method.
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
This solution enables continuous monitoring and adjustment of prestressing force during operation, reducing maintenance efforts and extending the intervals between replacements by providing real-time data for optimal belt tensioning.
Implementation Method 1
measuring the contact pressure by a pressure-sensitive sensor device arranged in the contact surface of at least one of the rollers facing the traction element
Data Source
Figure 1~2
Figure 3
AI summary
Method and apparatus for measuring the pretension force of a drive belt under tensile tension in a running belt drive, wherein the belt drive comprises at least one drive roller, one driven roller and one tensioning roller, wherein at least one of the rollers of the belt drive is assigned a device for measuring the contact pressure of the belt against the roller proportional to the pretension force and a device for generating an electronic signal dependent on the contact pressure, wherein the electronic signal is transmitted to a control device for regulating or controlling a tensioning device arranged within the belt drive and acting on the tensioning roller.