Crawler Machine Outer-Edge Guide for Collision Avoidance
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Solution Overview
Problem
Crawler-type work machines, such as hydraulic excavators, face challenges during ultra pivot turns due to the farthest position of their crawlers being outside the displayed guideline, leading to potential collisions with obstacles, as the existing monitoring systems do not accurately represent the positional relationship and distance to the revolution center.
Innovation Solution
A surroundings monitoring device that includes a camera system and a controller to superimpose an outer-edge guide image on the display, representing the farthest position from the revolution center, allowing operators to easily recognize distances and avoid collisions by displaying this guide on the camera's image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a guideline based on the rear end of the counterweight is displayed on the overview image, then the operator can recognize the trajectory of the upper revolving body, but the outer end of the crawlers at the farthest position from the revolution center is positioned outside the guideline, causing erroneous distance recognition and potential collision with obstacles
Solution Approach 1:
The patent changes the reference parameter for the guideline from the rear end of the counterweight to the outer end of the crawlers, which is the actual farthest position from the revolution center. This parameter change ensures that the guideline accurately represents the true boundary of the machine's movement trajectory, preventing erroneous distance recognition and potential collisions.
2Device complexity
If the guideline is drawn based on the rear end of the counterweight, then the display system is simple and easy to implement, but it does not accurately represent the farthest position from the revolution center during ultra pivot turn
Solution Approach 1:
The patent modifies the reference parameter for guideline generation from the counterweight rear end to the crawler outer end. This simple parameter change in the control logic enables accurate representation of the farthest position without significantly increasing system complexity, as it involves only changing which component's position is used as the reference point.
Data Source
AI summary
A surroundings monitoring device of a crawler-type work machine includes: cameras configured to take images of surroundings of the crawler-type work machine; a display unit configured to display the images taken by the cameras; and a controller configured to superimpose an outer-edge guide image generated based on the farthest position of an undercarriage from a revolution center of the crawler-type work machine on the display unit.