Motor Grader Blade Angle Control for Load Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Motor graders experience wheel slippage and inability to move forward when a high load is applied to the blade due to torque limitations, preventing work progression.
Innovation Solution
A control method that detects excessive loads on the blade and adjusts the blade angle by revolving the swing circle to reduce the load, allowing the motor grader to proceed with work even under high load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a torque limit is applied to prevent wheel slippage, then wheel slippage is prevented, but the motor grader cannot move forward and works cannot proceed
Solution Approach 1:
The blade angle is dynamically adjusted based on real-time load detection. When excessive load is detected, the swing circle revolves to change the blade angle, making the blade more horizontal to reduce load on the wheel. This dynamic adjustment allows the system to adapt to varying load conditions and maintain both slippage prevention and work progression.
Solution Approach 2:
The blade angle parameter is changed in response to load conditions. By revolving the swing circle, the blade angle is modified from a steep configuration to a more horizontal configuration, changing the mechanical parameters of the blade-wheel interaction to reduce slippage while maintaining forward movement capability.
2Productivity
If the blade angle is increased to improve cutting performance, then cutting efficiency is improved, but wheel slippage occurs and forward movement is prevented
Solution Approach 1:
A load detection device provides continuous feedback on the load applied to the blade. This feedback is used to control the swing circle's rotation, creating a closed-loop control system that automatically adjusts the blade angle to maintain optimal cutting performance while preventing wheel slippage and ensuring forward movement capability.
Data Source
AI summary
A control method is performed in a motor grader, the motor grader including a blade between a front wheel and a rear wheel, the blade being attached to a swing circle which adjusts a blade angle. The control method includes detecting a load applied to the blade and revolving, when the detected load is larger in value than a predetermined reference value, the swing circle in such a direction that the blade angle is smaller than the blade angle at the time of detection of that value.