Loader Arm Cavity for Protected Sensor Mounting
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Solution Overview
Problem
Existing loader systems face challenges in accurately measuring the swivel angle of tools due to the complexity and cost of sensor installation, as well as the need for robust protection against environmental stress and damage, which often results in inaccuracies and increased assembly work.
Innovation Solution
A cavity is formed in the loader arm near the swivel linkage, housing the sensor and actuating device, which includes a rotary axis, lever, and control arm, allowing for direct measurement of swivel movements and reducing external exposure, thus simplifying installation and protecting the sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor is mounted directly on the loader arm or tool carrier, then the swivel angle can be measured directly, but the sensor is exposed to contamination and damage from the load
Solution Approach 1:
The sensor is nested within a cavity formed in the loader arm, providing protection from external contaminants and damage while maintaining the ability to measure swivel angle through the cavity opening. The actuating device extends partially through the opening to connect the protected sensor to the pivot linkage.
Solution Approach 2:
The cavity acts as an intermediary structure that protects the sensor from direct exposure to harmful environmental factors while still allowing the sensor to perform its measurement function. The opening in the cavity serves as a controlled interface between the protected sensor environment and the external pivot linkage.
2Reliability
If the sensor is positioned in a protected location, then the sensor is protected from damage, but installation becomes difficult or complex
Solution Approach 1:
The loader arm is segmented to include a specifically formed cavity that houses the sensor. This cavity is integrated into the loader arm structure during manufacturing, so that when the loader arm is assembled, the sensor cavity is already in place, simplifying sensor installation while maintaining protection.
3Reliability
If a robust cover is added to protect the sensor, then the sensor is protected from damage, but the cover obstructs the view of the tool and creates additional installation work and costs
Solution Approach 1:
The protective structure for the sensor is merged with the loader arm itself by forming a cavity directly in the loader arm. This eliminates the need for separate protective covers while maintaining sensor protection, reducing device complexity and installation work.
Data Source
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AI summary
The loader (10) has a loader arm (12) and a tool carrier (26) or a tool arranged on the loader arm. A sensor is provided, by which a pivoting angle between the tool carrier and the loader arm is detected. The sensor is arranged in a cavity on the loader. An actuating device is arranged for the sensor, which partially extends through an opening formed on the cavity and connects the sensor with a pivoting rod (24). The cavity is formed in the loader arm.