Motor Grader Frame Articulation Control for Blade Alignment
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Solution Overview
Problem
Motor graders with reversible blades face challenges in load distribution and stability due to uneven blade angles, leading to potential sliding issues during operation, as existing solutions do not effectively address the independent adjustment of frame articulation in relation to the blade position.
Innovation Solution
A method and system for automatically adjusting the articulation angle of a motor grader's frame relative to its rear frame, using sensors and actuators to maintain the leading edge of the blade within a defined operating threshold, ensuring proper alignment and reducing side draft and sliding risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the reversible blade is angled to shift material sideways, then the blade can redirect material relative to the motor grader direction of travel, but the front end of the motor grader is pulled towards the leading edge of the blade causing uneven load distribution and sliding
Solution Approach 1:
The patent applies dynamics by making the frame articulation automatically adjustable based on blade angle. The system continuously monitors blade position and dynamically adjusts the frame articulation angle to compensate for lateral forces, transforming a static frame configuration into a dynamic one that adapts to changing blade angles and material redirection requirements.
Solution Approach 2:
The patent implements feedback through sensors that detect blade angle and position, feeding this information to a control system that automatically adjusts frame articulation. This closed-loop feedback mechanism ensures the frame articulation is continuously optimized to counteract lateral forces and maintain stable load distribution during material redirection operations.
2Stability of the object's composition
If the frame articulation is adjusted to compensate for lateral forces, then load distribution and stability improve, but the system complexity increases due to additional actuators and control mechanisms
Solution Approach 1:
The patent applies universality by designing the automatic frame articulation adjustment system to serve multiple functions: it compensates for lateral forces during material redirection, maintains optimal blade-to-ground contact, and adapts to different operating conditions. This multi-functional approach consolidates several control needs into a single integrated system, reducing overall complexity despite the added capability.
3Manufacturing precision
If automatic blade mode is used to maintain spacing from road markers, then blade positioning accuracy improves, but the operator loses direct control over frame articulation and blade shift coordination
Solution Approach 1:
The patent applies preliminary action by pre-programming optimal frame articulation adjustments based on detected blade angles and positioning requirements. The system automatically executes predetermined adjustment sequences that have been optimized for various operating conditions, eliminating the need for operators to manually coordinate complex articulation and blade shift movements while maintaining high positioning accuracy.
Data Source
AI summary
Systems and methods for automatically adjusting a motor grader can include receiving one or more identifiers corresponding to a configuration of the motor grader; determining, based at least in part on the one or more identifiers, a position of a leading edge of a blade of the motor grader relative to a rear frame axis of the motor grader; and, if the determined position is not within an operating threshold, causing a frame actuator of the motor grader to change an articulation angle of the frame to move the leading edge to within the acceptable threshold.