Construction Machine Travel Direction Display for Slew Angle Disorientation
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Solution Overview
Problem
Operators of construction machines with slewable upper bodies face disorientation when determining the traveling direction of the lower traveling body, leading to decreased work efficiency due to unnecessary angle information display during non-traveling operations.
Innovation Solution
A construction machine equipped with an angle detecting device, a travel lever, a see-through display device, and a controller that generates and displays directional information only when the travel lever is manipulated, allowing the operator to recognize the lower traveling body's direction without distracting them during other operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If angle information of the upper slewing body is always displayed on the monitor screen, then the operator can recognize the traveling direction of the lower travelling body, but the displayed angle information disturbs the operator during non-traveling operations and deteriorates work efficiency
Solution Approach 1:
The display device dynamically changes its display state based on the operational state of the construction machine. When the lower travelling body is traveling, the display device shows the directional information image indicating the traveling direction. When traveling stops, the display device switches to a non-display state, eliminating distraction and improving work efficiency during non-traveling operations.
Solution Approach 2:
The display device operates periodically based on the traveling state of the lower travelling body. It displays directional information during traveling periods and remains inactive during non-traveling periods, ensuring information is provided only when necessary without continuously disturbing the operator.
2Ease of operation
If the upper slewing body slews, then the operator can position the cab for optimal viewing, but the displayed angle information becomes incorrect relative to the ground and causes operator disorientation
Solution Approach 1:
The display device acts as an intermediary that translates the relative angle between the upper slewing body and lower travelling body into accurate directional information. It calculates the traveling direction based on the angle detecting device data and presents it in a form that remains accurate regardless of the upper slewing body's slew position, preventing operator disorientation.
3Reliability
If directional information is displayed during all operations, then the operator always has orientation awareness, but unnecessary information display during non-traveling operations reduces work efficiency
Solution Approach 1:
The display device dynamically adjusts its operation based on the traveling state of the lower travelling body. It provides directional information during traveling to maintain operator orientation awareness, and suppresses display during non-traveling operations to eliminate unnecessary distraction and maintain high work efficiency.
Data Source
AI summary
A construction machine capable of suppressing deterioration in work efficiency includes an angle detecting device that detects a relative angle between a lower travelling body and an upper slewing body, a travel lever that can be manipulated to make the lower travelling body travel, a display, a directional information generating unit that generates information related to a travelling direction of the lower travelling body based on a detected result of the angle detecting device, and a display controller. The display controller causes the display to display an arrow image indicating the travelling direction of the lower travelling body generated by the directional information generating unit when the travel lever is manipulated and does not permit the display to display the arrow image when the travel lever is not manipulated.