Tractor Pedal Arrangement Using Floor Bracket Pivot Shafts
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Solution Overview
Problem
In work vehicles like tractors, the arrangement of pedals becomes challenging when the exhaust gas treatment device is placed inside the bonnet and the fuel tank is relocated to the lower side of the floor, making it difficult to accommodate pedals compactly.
Innovation Solution
A work vehicle design that includes a pedal configured to move the vehicle forward or backward, with pivot shafts positioned on a floor bracket between the floor and the fuel tank, allowing for compact arrangement by eliminating the need for a dedicated pivot shaft member and utilizing link mechanisms and grease nipples for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the exhaust gas treatment device is arranged inside the bonnet and the fuel tank is relocated to the lower side of the floor, then the installation space for pedals becomes limited and difficult to arrange compactly
Solution Approach 1:
The pivot shafts are positioned in the vertical dimension between the floor and the fuel tank, rather than only in the horizontal plane. This three-dimensional arrangement allows the pedal mechanism to be compactly integrated into the available space, resolving the contradiction between installation flexibility and arrangement complexity.
2Device complexity
If pivot shafts are provided on the floor bracket between the floor and the fuel tank, then the pedal can be compactly arranged, but the space for other components is reduced
Solution Approach 1:
The pedal mechanism with its pivot shafts is nested within the vertical space between the floor and the fuel tank. This nesting approach allows the pedal assembly to occupy the otherwise unused vertical clearance, achieving compact arrangement without encroaching on the horizontal installation area needed for other components.
3Length of moving object
If the pedal mechanism is compacted by positioning pivot shafts on the floor bracket, then the overall pedal size is reduced, but the link mechanisms and grease nipples require precise positioning
Solution Approach 1:
The floor bracket serves multiple functions: it supports the floor, positions the pivot shafts, and provides mounting points for the link mechanisms and grease nipples. This multi-functionality reduces the need for separate positioning components and simplifies the manufacturing precision requirements while maintaining compact pedal dimensions.
Data Source
AI summary
A tractor according includes a running vehicle body, a floor provided on the running vehicle body and serving as a floor surface of an operation part in which a driver is located, a floor bracket configured to support the floor, a fuel tank provided below the floor, and a pedal configured to move the running vehicle body forward or backward and having pivot shafts provided on the floor bracket between the floor and the fuel tank.