Belt-Driven RC Lawn Mower Layout for Slopes and Low Clearance
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Solution Overview
Problem
Existing radio-controlled vehicles, particularly lawn mowers, are bulky, heavy, and unsuitable for navigating low passage areas and steep slopes, requiring complex hydraulic and electric systems that are difficult to maintain and costly.
Innovation Solution
A compact radio-controlled lawn mower with a belt-driven mechanical system for each rolling unit, featuring a central internal combustion engine and lateral drive systems connected via a belt drive assembly, reducing the number of components and maintaining the engine in a low profile to fit under structures like photovoltaic panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hydraulic assembly with pump, tank, filters and ducts is used to operate rolling units, then the vehicle can operate on various terrains, but the vehicle becomes heavy and bulky, making it difficult to use on steep slopes and in low passage areas
Solution Approach 1:
The patent extracts and eliminates the hydraulic assembly (pump, tank, filters, ducts) from the vehicle system, replacing it with a direct mechanical drive system where the engine is mechanically connected to the rolling units through a transmission system, thereby removing the source of excessive weight and bulk
Solution Approach 2:
The patent replaces the hydraulic mechanical system with a direct mechanical drive system, where the internal combustion engine is mechanically coupled to the transmission and rolling units through belts and pulleys, eliminating the need for hydraulic fluid and components
2Adaptability or versatility
If a hydraulic assembly with multiple components is used, then the vehicle can operate on various terrains, but the vehicle becomes bulky and unsuitable for low passage areas
Solution Approach 1:
The patent removes the hydraulic assembly components (pump, tank, filters, ducts) that occupy significant volume, replacing them with a compact mechanical drive system that fits within the constrained spatial envelope required for low passage area operation
Solution Approach 2:
The patent merges the functions of the engine, transmission, and drive mechanisms into a more integrated and compact arrangement, eliminating the separate hydraulic system components and reducing overall vehicle volume
3Adaptability or versatility
If a complex hydraulic assembly is used, then the vehicle can operate on various terrains, but periodic maintenance is required on hydraulic components
Solution Approach 1:
The patent extracts and eliminates the hydraulic assembly (pump, tank, filters, ducts) that requires periodic maintenance, replacing it with a mechanical drive system that has fewer moving parts and simpler maintenance requirements
Solution Approach 2:
The patent employs belts as replaceable wear components in the mechanical drive system, which are inexpensive and can be easily replaced when worn, eliminating the need for complex hydraulic system maintenance
4Ease of operation
If a radio-controlled vehicle is designed with traditional components, then it can perform ground work, but it cannot pass through low passage areas with height lower than one metre
Solution Approach 1:
The patent employs a low-profile engine design and flexible belt drive system that allows the vehicle to maintain a low height profile while still delivering the necessary power and torque to perform ground work operations
Solution Approach 2:
The patent redistributes the mechanical components in a horizontal arrangement rather than vertical stacking, placing the engine, transmission, and drive mechanisms in a planar configuration that minimizes vehicle height while maintaining functional capability
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
The design allows the lawn mower to navigate low passage areas and steep slopes safely and efficiently, with reduced maintenance needs and lower costs, ensuring stability and ease of use.
Implementation Method 1
a belt-driven mechanical system for each rolling unit, featuring a central internal combustion engine and lateral drive systems connected via a belt drive assembly
Data Source
AI summary
A radio-controlled vehicle, in particular a radio-controlled lawn mower, comprising: a frame; an engine; at least one rolling unit to cause the radio-controlled vehicle, in use, to move on a ground; a drive system for each rolling unit; a remote control; a control unit, which exchanges signals with the remote control, the engine and each drive system; a belt drive assembly which is interposed between the engine and each drive system and is operated by the engine so as to cause the rotation of each drive system.