Grader Drawbar Control with a 3-DOF Single Operation Lever
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The operation of grader work equipment is complicated due to the need for three axes operations spanning multiple levers to achieve desired angles, making it difficult to control the movement of the drawbar effectively.
Innovation Solution
A control device that uses at least three actuators to control the drawbar, with a single operation lever having three degrees of freedom, allowing the movement of the lever to correspond to the movement of the drawbar, simplifying the operation by using a joy stick with tilting and rotational capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If three actuators are used to control the drawbar, then the drawbar positioning accuracy is improved, but the operation complexity increases due to requiring three axes operations spanning multiple levers
Solution Approach 1:
The patent combines three separate operation levers into a single integrated operation lever with three degrees of freedom. This single lever integrates the functions of multiple levers, allowing the operator to control all three actuators simultaneously through one unified input device, thereby reducing operation complexity while maintaining precise drawbar positioning
Solution Approach 2:
The single operation lever is designed to perform multiple functions by providing three degrees of freedom. This universal lever can control pitch, roll, and yaw movements of the drawbar through three separate actuators, replacing what previously required three separate levers and simplifying the operational interface
2Measurement precision
If multiple operation levers are used to control the drawbar, then the control precision is improved, but the device complexity increases
Solution Approach 1:
The patent merges three separate operation levers into one integrated lever structure. This consolidation reduces the number of discrete components and simplifies the overall device architecture while maintaining the precision control capabilities through the three degrees of freedom of the single lever
Solution Approach 2:
The single operation lever is designed as a multi-functional device that can control three different actuators simultaneously. This universal lever reduces device complexity by eliminating redundant components while preserving precise control over drawbar positioning through its three rotational degrees of freedom
Data Source
AI summary
The control device is a control device that controls a drawbar attached to a main frame of a grader, in which a movement of the drawbar is generated by at least three actuators, and the control device controls, based on an output signal from one operation lever having at least three degrees of freedom, the plurality of actuators such that a movement of the one operation lever corresponds to the movement of the drawbar.