Tractor Switching Valve Relocation for Hydraulic Maintenance
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Solution Overview
Problem
Conventional tractor configurations require significant effort to switch between implement and ordinary tractor operations, and maintenance of hydraulic ducts is hindered by the presence of brackets and ducts in the driver's station area.
Innovation Solution
A tractor design featuring a switching valve positioned rearward of the driver's station floor, a duct connecting member with ports at the front end of the driver's station, and metal ducts connecting these components below the driver's station floor, allowing for easy detachment and reconnection of hydraulic hoses without interference from the operation pedal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the front loader is detached and brackets are left in place, then the operation lever remains in the front portion of the driver's station, but this hampers driving and creates operational interference
Solution Approach 1:
The switching valve is extracted from the bracket assembly and relocated to the rear of the driver's station floor. This separation allows the bracket to be completely removed when the front loader is detached, eliminating the operation lever from the driver's station area and resolving the driving interference issue while maintaining structural simplicity
2Ease of operation
If the brackets are detached along with the front loader, then the operation lever is removed from the driver's station, but this requires disconnecting multiple ducts including those connecting the switching valves to the front loader and to hydraulic pressure ports
Solution Approach 1:
The switching valve is extracted from the bracket assembly and repositioned to the rear of the driver's station floor where it remains permanently mounted. This allows the bracket to be completely removed without the switching valve, eliminating the need to disconnect ducts associated with the bracket-mounted valve while maintaining clear access to all hydraulic connections
3Device complexity
If ducts are positioned in the driver's station area, then connection to the switching valve is achieved, but maintenance of these ducts is hampered by the presence of the operation pedal and other components
Solution Approach 1:
The ducts are routed beneath the driver's station floor, utilizing the vertical space below the floor level. This dimensional relocation positions the ducts in an accessible area where maintenance can be performed without interference from the operation pedal or other driver's station components, while still maintaining proper connection to the switching valve
Data Source
AI summary
The present invention provides a tractor, comprising: a vehicle body that is supported by a plurality of wheels; a switching valve that is disposed rearwardly of a vicinity of a rear end of a driver's station floor as viewed from above; a duct connecting member that is positioned at the front end of the driver's station floor and provided with a plurality of duct connecting ports; and a plurality of metal ducts that connect the switching valve and the duct connecting member below the driver's station floor, wherein the metal ducts are positioned on a laterally outer side of a portion, that is located below the driver's station floor, of a pedal arm for an operation pedal, the pedal arm being disposed at a front portion of the driver's station floor.