Grading Machine Control System for Precise Blade Positioning
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Solution Overview
Problem
Existing grading machine control systems lack sufficient positioning and orienting options, making it difficult for inexperienced operators to perform complex tasks efficiently, as they require extensive experience and time to adjust blade positions and orientations accurately.
Innovation Solution
A control system for a grading machine that includes sensors to detect the position and orientation of the blade and drawbar, and a user interface to receive inputs for positioning these components to one of several predetermined ditching positions, with automatic adjustments if necessary, using hydraulic cylinders and motors to achieve precise positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual blade positioning and orienting is used, then the operator has full control over blade positions, but the task becomes complex and time-consuming requiring extensive experience
Solution Approach 1:
The control system pre-defines multiple ditching positions with specific blade height, cutting angle, pitch, and sideshift configurations. When an operator selects a ditching position, the system automatically executes the pre-programmed sequence of adjustments, eliminating the need for manual step-by-step positioning and reducing both time and complexity
Solution Approach 2:
Sensors continuously monitor the actual position and orientation of the blade and drawbar, providing real-time feedback to the control system. The control system compares sensed positions with target positions and automatically makes adjustments to achieve precise positioning, ensuring accurate ditching operations even for inexperienced operators
2Adaptability or versatility
If multiple blade positions and orientations are available, then positioning options increase, but the control system complexity increases
Solution Approach 1:
The control system provides multiple ditching positions (at least three different positions) that cover various grading operations. Each ditching position integrates multiple blade parameters (height, angle, pitch, sideshift) into a single selectable configuration, allowing the system to perform diverse grading tasks while maintaining a unified control interface that does not increase operational complexity
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
Enables inexperienced operators to efficiently position and orient the grading blade and drawbar to specific positions, reducing the complexity and time required for tasks, and ensuring accurate grading operations.
Implementation Method 1
at least one grading blade sensor configured to sense a position and orientation of the grading blade, a at least one drawbar sensor configured to sense a position and orientation of the drawbar
Implementation Method 2
positioning the drawbar and the grading blade to the user-selected ditching position by positioning a drawbar centershift cylinder, positioning a blade pitch cylinder, and a circle drive motor
Data Source
AI summary
A grading machine may include a machine body, a grading blade, at least one grading blade sensor configured to sense a position and orientation of the grading blade, a drawbar connecting the grading blade to the machine body, at least one drawbar sensor configured to sense a position and orientation of the drawbar, a user interface, and a control system. The control system may be configured to receive an input from the user interface and position and orient the grading blade and the drawbar to one of a plurality of predetermined ditching positions based on the input.