Work Implement Horizontal Control via On-Screen Tilt Setting

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Solution Overview

Problem

The existing work machines face inefficiencies in horizontal control of the work implement's tilt with respect to the machine body, which can reduce work efficiency depending on the user's skill level.

Innovation Solution

An operation control method and system that includes displaying a horizontal control operation screen and performing settings related to the tilt control of the work implement, allowing users to adjust the tilt angle through a control operation unit on the screen.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual adjustment of work implement tilt is used, then the machine can perform horizontal control, but work efficiency is reduced depending on user skill level

Engineering Contradiction:
Improveease of horizontal controlVSAvoidwork efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The patent replaces manual mechanical adjustment of the work implement tilt with an automated control system that uses sensors to detect the machine's attitude (roll and pitch angles) and automatically adjusts the work implement's horizontal position. This substitution eliminates the need for operator skill in manual tilt adjustment, improving both ease of operation and work efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables the work machine to automatically adjust its own horizontal control without external manual intervention. The control unit continuously monitors the machine's attitude through sensors and autonomously adjusts the work implement's tilt angle to maintain proper horizontal alignment, making the system self-regulating and independent of operator skill level.

Inventive Principle:
Principle #25Self-service

2Productivity

If automated horizontal control is implemented, then work efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvework efficiencyVSAvoidcontrol system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The control unit serves multiple functions: it processes data from multiple sensors (roll angle, pitch angle), calculates the appropriate tilt adjustment, controls the hydraulic actuator, and maintains horizontal alignment across different working conditions. This multi-functionality consolidates what could be separate complex systems into a single integrated control unit, improving efficiency while managing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system implements a closed-loop feedback control mechanism where sensors continuously monitor the machine's actual attitude (roll and pitch angles), the control unit compares this with the desired horizontal position, and automatically adjusts the work implement tilt to eliminate any deviation. This feedback mechanism enables precise automated control without requiring overly complex manual control systems.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP4385300A1Operation control method, operation control system, and operation control program
Publication Date: 2024.06.19 YANMAR HLDG CO LTD
  • EP4385300A1 patent drawingFigure 1
  • EP4385300A1 patent drawingFigure 2~3
  • EP4385300A1 patent drawingFigure 4~5A

AI summary

[Problem] To provide an operation control method, an operation control system, and an operation control program capable of improving work efficiency in a work machine including a machine body and a work implement attached to the machine body. [Solution] The operation control method displays a horizontal control operation screen Dp51 relating to horizontal control that controls a tilt of a work implement with respect to a machine body, for a work machine including a machine body, and a work implement attached to the machine body. The setting related to the horizontal control is performed in accordance with an operation of a user on a control operation unit included in the horizontal control operation screen Dp51.