Cutting Module With Rotating Reel and Protective Guard
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Solution Overview
Problem
Existing self-propelled lawn mower robots and bush-cutters face issues such as incomplete cutting due to structural limitations, difficulty in adjusting cutting height, safety concerns due to exposed blades, rapid wear of cutting components, and irregular cutting patterns, which result in inefficient and unsafe operation.
Innovation Solution
A cutting module with a rotating cutting blade, adjustable height mechanism, and protective guard that can be installed on self-propelled lawn mower robots or bush-cutters, allowing for precise and safe cutting around obstacles and uneven terrain, featuring a telescopic shaft for height adjustment and a protective guard to prevent accidents and extend blade life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cutting blade is positioned at a certain distance from the outer perimeter to avoid interference with wheels, then wheel interference is prevented, but complete cutting coverage is lost
Solution Approach 1:
The cutting blade is mounted on a rotating reel that can spin rapidly, allowing the blade to reach the outer perimeter dynamically during rotation while the wheel maintains its static position. This dynamic mounting resolves the contradiction by enabling complete cutting coverage without compromising wheel operation reliability.
2Adaptability or versatility
If the cutting height adjustment mechanism is added to allow height adjustment, then cutting height adaptability is improved, but device complexity increases
Solution Approach 1:
The cutting height adjustment is achieved by making the reel assembly a separable module that can be easily detached and repositioned. This segmentation allows height adjustment without adding complex integrated mechanisms, resolving the contradiction between adaptability and device complexity.
3Productivity
If the cutting blade is exposed to enable cutting operation, then cutting functionality is maintained, but user safety is compromised
Solution Approach 1:
The cutting blade is mounted on a rotating reel that spins rapidly during operation. This dynamic rotation creates a centrifugal barrier that prevents accidental contact while maintaining cutting functionality. The blade is effectively 'exposed' for cutting but 'protected' by its rotational motion, resolving the safety-functionality contradiction.
4Productivity
If the cutting wire or blade is used without protective covering, then cutting performance is maintained, but component wear increases rapidly
Solution Approach 1:
The rapid rotation of the reel-mounted blade creates a dynamic protective effect where the centrifugal force and rotational motion prevent the blade from contacting ground obstacles. This dynamic operation maintains cutting performance while reducing wear, resolving the contradiction between productivity and component durability.
Data Source
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AI summary
Described is a cutting module (1) for trimming and cutting the turf of the ground (100), comprising a support structure (10), cutting means (11) having at least one cutting blade (12) operatively associated with the supporting structure (10) and defining a cutting area (13) of the cutting module (1), means (20) for resting on the ground (100) operatively associated with the supporting structure (10). The supporting means (20) are located inside the cutting area (13). The cutting blade (12) is driven by a motor (14) fixed to the supporting structure (10) and/or to the cutting means (11) and wherein the motor (14) has a relative axis of rotation (M) coinciding with a central axis (X) of rotation of the cutting blade (12). The cutting module (1) is configured in such a way as to allow contact of the cutting blade (12) only with the turf and prevent a contact of the blade (12) with every extraneous object.