Work Machine Control Layout for Jog Dial and Lever Access
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Solution Overview
Problem
Operators of work machines face difficulties in using the jog dial to operate the display device without interfering with the operability of the dozer lever, requiring careful arm positioning to avoid malfunction, and there is a need for improved smoothness in shifting between operating the display device, keypad, and operation levers.
Innovation Solution
A work machine design where the jog dial is positioned between the first and second levers at a back-facing position relative to the operator's seat, allowing for improved accessibility and operation of the display device without impairing the use of operation levers, with the jog dial and keypad arranged to facilitate easy operation by the operator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the jog dial is positioned in front of the dozer lever, then the display device is easily accessible, but the operator must pull the arm back causing operational delay
Solution Approach 1:
The jog dial is positioned in the intermediate space between the first lever (work unit control) and second lever (soil removing device control). This intermediary positioning allows the operator to access the display device without retracting the arm from the lever operating position, eliminating time loss.
2Ease of operation
If the jog dial is arranged to overlap the dozer lever, then the display device can be operated, but the operator must be careful about malfunction indicating reduced reliability
Solution Approach 1:
The jog dial is extracted from the overlapping position with the dozer lever and relocated to the space between the first and second levers. This separation removes the source of potential malfunction (arm contact risk) while preserving the display device's operability.
Data Source
AI summary
A work machine includes a first lever arranged next to one side of an operator's seat to operate a work unit, a second lever arranged on one side of the first lever to operate a soil removing device, a display device arranged in front of the operator's seat, the first lever, and the second lever, and a jog dial for operating the display device. The jog dial is positioned between the first lever and the second lever at a position facing the operator's seat from the back.