Trailer Coupling Wear Detection via Pin Movement
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Solution Overview
Problem
Existing trailer coupling systems fail to effectively notify drivers when the support member is worn out, leading to excessive wear, potential damage, and unnecessary replacement costs, as the wear is not timely detected.
Innovation Solution
A trailer coupling system equipped with a magnitude sensor that detects the wear of the support member by measuring the movement of the coupling pin, alerting the driver when the wear exceeds a predetermined threshold, thereby preventing damage and optimizing maintenance timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support member is not replaced in time, then the coupling and eye may be damaged or the trailer cannot be connected, but replacing the support too early causes unnecessary costs
Solution Approach 1:
The magnitude sensor detects wear of the support member before it reaches a critical level, enabling preliminary notification to the driver. This allows replacement to be scheduled at the optimal time - just before the support member fails - avoiding both premature replacement and failure-related damage.
Solution Approach 2:
The magnitude sensor provides continuous feedback about the wear state of the support member by measuring the movement magnitude of the coupling member. This feedback loop enables real-time monitoring and timely notification, allowing the driver to replace the support member at the appropriate moment based on actual wear conditions rather than fixed schedules.
2Measurement precision
If the support member wears out, then contact wear between the guiding funnel and connection portion increases, but detecting this wear requires additional sensors and complexity
Solution Approach 1:
Instead of directly measuring support member wear, the magnitude sensor measures the movement magnitude of the coupling member as an intermediary parameter. The wear of the support member causes changes in the coupling member's movement, which the sensor detects. This indirect measurement approach simplifies the system compared to direct wear sensing while maintaining detection accuracy.
Solution Approach 2:
The coupling member's own movement serves as the indicator of support member wear. The system uses the natural operational movements of existing components rather than requiring separate measurement mechanisms, thereby reducing overall system complexity while enabling wear detection.
Data Source
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AI summary
There is disclosed a trailer coupling (1) for connecting a trailer to a towing vehicle. The trailer coupling (1) comprises: a wearable support member arranged to abut against a connection portion (100) of a drawbar (101) mounted to the trailer, when the connection portion (100) is received by the trailer coupling (1) and positioned in a towing position; a movable coupling member having a first position such that the connection portion (100) can move into and out of the towing position, and a second position for securing the connection portion (100) in the towing position, the second position being such that the connection portion (100), when entering and leaving the towing position, pushes the coupling member to perform a movement; and a magnitude sensor (11) configured to provide a measure indicative of a magnitude of the movement and, thereby, capable of detecting that an amount of wear of the support member exceeds a predetermined threshold.