Movable Operator Chair Layout for Ground-Level Vehicle Work
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Solution Overview
Problem
Existing vehicles require operators to perform manual tasks that involve bending over or kneeling, which can be backbreaking, especially for individuals with mobility issues or disabilities, and lack the ability to perform these tasks comfortably and efficiently at ground level without structural obstructions.
Innovation Solution
A three-wheeled electric vehicle with a movable operator's chair that allows the operator to sit at or near ground level, featuring a frame above the operator, independent rear wheel motors, a single joystick control, and a control computer for maneuverability and safety features, enabling tasks to be performed without discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator performs manual tasks at ground level, then the tasks can be completed, but the operator experiences backbreaking strain and discomfort from bending over and kneeling
Solution Approach 1:
The operator's chair is made movable with adjustable position along the longitudinal axis and vertically, allowing the operator to dynamically adjust their position to perform tasks at various heights including ground level, thereby eliminating the need for bending over and kneeling while maintaining comfort
2Ease of operation
If the vehicle frame is positioned below the operator, then structural support is provided, but the operator cannot perform ground level tasks without structural obstructions
Solution Approach 1:
Instead of positioning the frame below the operator as in conventional vehicles, the frame is inverted to be positioned above the operator. This allows the operator to move the chair down to ground level without the frame obstructing access, while the frame still provides structural support through its overhead configuration
3Productivity
If the chair is fixed in position, then structural simplicity is maintained, but the operator cannot move to multiple positions to perform tasks efficiently
Solution Approach 1:
The chair is transformed from a fixed component to a dynamic one with motorized movement capabilities along the longitudinal axis and vertically. This allows the operator to efficiently position themselves for tasks at various heights and locations while the control system manages the complexity of the movement mechanism
4Reliability
If the vehicle has traditional overhead frame structure, then structural strength is achieved, but the operator experiences rollover risk and lack of safety in case of upset
Solution Approach 1:
The frame structure is inverted from the conventional configuration where the frame is below the operator to a configuration where the frame is above the operator. This inversion positions the heavy frame and batteries above the operator's center of gravity, providing rollover protection while the operator remains on top in case of upset, significantly improving safety
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables operators to perform tasks at ground level comfortably and efficiently, reducing fatigue and accommodating various attachments for diverse applications, while ensuring stability and safety through computerized control and weight sensing.
Implementation Method 1
The frame has an upper section defining the top of the operator compartment and being constructed and arranged to support a solar panel. The solar panel is electrically connected to at least one (as many as eight) batter(ies)
Implementation Method 2
A pair of rear wheels are connected to the frame, each being driven independently by separate electric motors
Data Source
AI summary
The inventive vehicle provides all the benefits discussed above with a frame defining an operator compartment, the operator compartment having a back section and having open sides and an open bottom. A first movable chair is attached to a motorized chair movement device which allows the chair to be moved vertically and horizontally on the back section of the operator compartment within the operator compartment. A pair of rear wheels is connected to the frame, each being driven by an electric motor. The frame has an upper section defining the top of the operator compartment and being constructed and arranged to support a solar panel. The solar panel is electrically connected to at least one battery which is connected to the frame and which provides power to the vehicle. A pair of front caster wheels are pivotably connected to a front frame. A control computer is connected to the rear wheel motors, motorized chair movement device, caster wheel suspension arms and foot/leg rest, and to the raising and lowering of the front attachment plate. A plurality of operator controls are connected to the first movable chair and operably connected to the control computer for operating the vehicle.