Shovel Bucket Control for Precise Slope Toe Alignment
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Solution Overview
Problem
Existing shovels do not assist in efficiently forming the edge portions of ground features, such as the toe slope, which is the lower edge of a slope.
Innovation Solution
A shovel with a control device that includes a lower traveling body, an upper swiveling body, a boom, an arm, and a bucket, equipped with sensors and a controller to assist in forming the edge portions by controlling the swiveling and movement of these components to align with a target line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing shovels are used for forming edge portions of ground features, then the basic excavation function is performed, but the efficiency in forming edge portions such as toe slope is insufficient
Solution Approach 1:
The control device receives operation amount information from operation amount information acquiring means and control position information from position information acquiring means, then outputs control signals to actuators based on this feedback loop. This enables the shovel to automatically adjust its position and orientation to align with the target construction surface, significantly improving efficiency in forming edge portions while reducing the operational burden on the operator.
2Manufacturing precision
If manual operation is used to align the shovel with the target construction surface, then the operator has full control, but the alignment precision and efficiency are reduced
Solution Approach 1:
The control device automatically performs alignment operations by receiving control position information and operation amount information, then autonomously generating control signals to adjust the shovel's position and orientation. The system serves itself by automatically aligning with the target construction surface without requiring manual intervention, thereby achieving high alignment precision while reducing the time lost to alignment operations.
3Productivity
If the shovel components are controlled to move along a target line, then edge portion formation is improved, but the control system complexity increases
Solution Approach 1:
The control device serves multiple functions: it acquires operation amount information from operation amount information acquiring means, receives control position information from position information acquiring means, processes this information, and outputs control signals to multiple actuators simultaneously. This multi-functional design enables the control device to manage the complex coordination of swiveling, boom, arm, and bucket movements along the target line, improving edge portion formation efficiency while consolidating control functions into a single integrated system.
Data Source
AI summary
A shovel includes a lower traveling body, an upper swiveling body mounted to the lower traveling body, attachments including a boom attached to the upper swiveling body, an arm attached to an end of the boom, and a bucket that is an end attachment attached to an end of the arm, and a control device configured to control swiveling of the upper swiveling body and movement of the attachments so that an end portion of the bucket moves along an extension of a slope toe, which is a target line.