Linkage Wear Detection via Bending Load Sensors
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Solution Overview
Problem
The service life of ground drilling device linkages is difficult to estimate due to varying load conditions, leading to inaccuracies in operational safety and maintenance calculations, as existing methods only consider drive device loads and not the actual loads experienced in the ground borehole.
Innovation Solution
A method to detect bending loads on the linkage within the ground borehole, using sensors like wire strain gauges or fiber-Bragg gratings, to calculate the service life of individual linkage lengths, which are then stored and updated for precise maintenance planning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If service life calculation is based only on drive device loads, then calculation simplicity is maintained, but measurement precision and reliability of service life estimation deteriorate
Solution Approach 1:
The linkage is divided into individual linkage lengths, each equipped with its own sensor for detecting bending loads. This segmentation allows each component to be monitored independently, providing precise load data for accurate service life calculation of each segment while maintaining overall system manageability.
Solution Approach 2:
Sensors are introduced as intermediary elements between the linkage and the measurement system. These sensors detect bending loads and transmit data to the evaluation device, enabling indirect but accurate measurement of actual loads experienced by the linkage in the ground borehole without directly instrumenting every component.
2Measurement precision
If sensors are installed on each linkage length to detect bending loads, then service life calculation accuracy is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The evaluation device is designed to process data from multiple sensors on different linkage lengths using a unified calculation methodology. This multi-functional evaluation system can handle data from any number of linkage lengths, reducing overall system complexity by using a standardized approach rather than custom solutions for each sensor.
Solution Approach 2:
Each linkage length with its sensor contributes its own load data to the service life calculation, making the system self-monitoring. The distributed sensors enable each component to report its own condition, reducing the need for complex centralized monitoring infrastructure.
3Reliability
If actual bending loads in the ground borehole are detected, then operational safety is improved, but loss of time for data collection and processing increases
Solution Approach 1:
The evaluation device continuously receives bending load data from sensors and automatically updates service life calculations in real-time. This feedback mechanism provides ongoing assessment of linkage condition without requiring manual data collection, maintaining operational safety while minimizing time loss through automated processing.
Solution Approach 2:
Service life calculations are performed continuously based on accumulated load data, allowing predictive maintenance planning in advance. By calculating service life progression over time, the system enables proactive maintenance scheduling before actual wear occurs, reducing downtime while ensuring safety.
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 approach significantly improves the accuracy of service life calculations by accounting for both drive device and ground borehole loads, enabling better operational safety and maintenance management of ground drilling devices.
Implementation Method 1
using sensors like wire strain gauges or fiber-Bragg gratings
Data Source
AI summary
A method for determining the wear on a linkage of a ground drilling device includes detecting a bending load of the linkage. The bending load is used to carry out a service life calculation.