Foot Control Pattern for Work Machine Operator Freedom
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Solution Overview
Problem
Conventional work machines require operators to use both hands to control multiple functions, leading to reduced productivity and inconvenience when adjusting settings, as operators must release one hand to perform tasks like adjusting throttle or changing controls.
Innovation Solution
A foot control pattern that allows for the use of a single hand to control machine functions, with a first foot control for the boom, a second foot control for the bucket, and a first hand control for propulsion and steering, while disabling the second hand control to free the operator for other tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator uses both hands to control joysticks or levers, then the machine can be controlled safely and稳vably, but the operator must release one hand to adjust throttle or change settings, reducing productivity and causing operational interruptions
Solution Approach 1:
The control functions are segmented between foot controls and hand controls. Specifically, the throttle control is separated from hand-operated joysticks and assigned to a foot-operated pedal, dividing the control system into distinct operational zones (foot zone for throttle, hand zone for joysticks) that can be operated simultaneously without interference, thereby maintaining continuous productivity while enabling easy adjustment
2Adaptability or versatility
If multiple controls are provided for multiple functions, then the machine can perform diverse tasks, but the complexity of controls increases, requiring more training and cognitive load from the operator
Solution Approach 1:
The foot-operated controls are designed to perform multiple functions. The foot pedals can control throttle, range selection, and other machine functions, allowing a single control interface (foot zone) to handle multiple operational parameters that would traditionally require separate hand controls, thereby reducing overall control complexity while maintaining versatility
3Ease of operation
If the operator must release one hand from a joystick to adjust settings, then the control can be adjusted, but the machine operates at less than optimal performance with lower productivity
Solution Approach 1:
The throttle control function is extracted from the hand-operated joystick system and placed in the foot-operated pedal zone. This extraction allows the thumb to remain on the joystick for continuous precision control while the foot independently controls throttle and other functions, eliminating the need to release the joystick and maintaining optimal machine performance during adjustments
Data Source
AI summary
The present disclosure provides a foot control pattern for operably controlling an electrohydraulic machine. The machine includes a cab, ground engaging mechanisms, a boom, and a bucket. The foot control pattern includes a machine controller having a plurality of inputs. A first foot control is electrically coupled to a first of the plurality of inputs, where the first foot control is adapted to control the boom. A second foot control is electrically coupled to a second of the plurality of inputs, where the second foot control is adapted to control the bucket. A first hand control is electrically coupled to a third of the plurality of inputs, where the first hand control is adapted to propel and steer the machine.