Tractor Compressor Offset Layout for Compact Power Transmission
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Solution Overview
Problem
Conventional tractors have a complex and large power transmission structure that enlarges the engine section due to the arrangement of the air-conditioning compressor, which complicates the transmission of engine power to the compressor.
Innovation Solution
A tractor design featuring a compact power transmission structure where the compressor is supported offset to one lateral side of the engine, with a compressor drive belt extending along a straight line between the engine output shaft and compressor drive shaft, allowing for efficient power transmission without obstructing the fan drive belt, and optionally including an alternator supported on the engine with a separate drive belt, facilitating easy maintenance and reduced costs by using an extension support shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the compressor is arranged in the engine section with a complex power transmission structure, then the air-conditioning function is achieved, but the engine section becomes enlarged and the structure becomes complicated
Solution Approach 1:
The compressor is positioned above the output shaft in the vertical dimension rather than horizontally alongside it, allowing power transmission through a belt along the straight line connection between the output shaft and compressor drive shaft. This vertical arrangement resolves the spatial conflict and simplifies the power transmission structure while maintaining the air-conditioning function.
Solution Approach 2:
The compressor is supported at a position offset to one lateral side of the engine relative to the fan support shaft, creating an asymmetric layout. This asymmetric positioning allows the compressor drive belt to be arranged along the straight line connection without interfering with the fan drive belt, simplifying the overall power transmission structure.
2Volume of stationary object
If the compressor is positioned to simplify power transmission, then the engine section size is reduced, but the arrangement may interfere with other components like the fan drive belt
Solution Approach 1:
By positioning the compressor above the output shaft and using vertical space, the engine section footprint is reduced while the straight line belt connection enables simple power transmission without interfering with horizontally arranged components like the fan drive belt.
Solution Approach 2:
The power transmission system is segmented into separate belt paths: the fan drive belt operates in the horizontal plane while the compressor drive belt operates in the vertical plane, allowing both to coexist without interference and maintaining ease of operation.
3Device complexity
If the compressor drive belt is arranged to avoid the fan drive belt, then power transmission is simplified, but maintenance and replacement may become difficult
Solution Approach 1:
The compressor drive belt is arranged in the vertical plane along the straight line connection between the output shaft and compressor drive shaft, separating it from the horizontally arranged fan drive belt. This spatial separation simplifies the power transmission structure while maintaining accessibility for maintenance and replacement.
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
This configuration enables simple and compact power transmission from the engine to both the compressor and alternator, reducing the overall complexity and size of the engine section while allowing for easy replacement and maintenance of components.
Implementation Method 1
a fan drive belt wound around the output shaft and a fan drive part of the cooling fan, for transmitting power from the output shaft to the fan drive part
Implementation Method 2
a compressor drive belt is wound around the output shaft and the compressor drive shaft to transmit power from the output shaft to the compressor drive shaft
Implementation Method 3
a cooling fan rotatably provided between the radiator and the engine for supplying cooling air to the radiator
Implementation Method 4
a radiator arranged on one front-rear side of the engine for cooling the engine
Data Source
AI summary
In a tractor, a radiator is arranged on one front-rear side relative to an engine. A cooling fan is provided between the radiator and an engine. A fan drive belt is wound around a fan support shaft and around an output shaft of the engine extending below the fan support shaft. A compressor is located above the output shaft and is supported to the engine at a position offset to one lateral side of the engine relative to the fan support shaft. A compressor drive belt is wound around the output shaft and a compressor drive shaft. The compressor drive belt is located on a side where the compressor is located relative to the fan support shaft, when viewed in a front-rear direction.