Robotic Mower Cutting Assembly With Adjustable Blade Height
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Solution Overview
Problem
Traditional lawn mowers are noisy, dusty, and physically demanding, causing operator fatigue and potential accidents due to the need for continuous manual control.
Innovation Solution
A robotic mower with a housing, movable upper cover, and a cutting assembly that includes a blade carrier lifting assembly, height-adjustment mechanism, and suspension-lifting detection system, allowing for automated operation and reduced operator involvement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional lawn mower is used for mechanized mowing, then mowing efficiency is improved, but operator exposure to noise, dust, and physical strain increases
Solution Approach 1:
The patent replaces the traditional mechanical push-mower system with an autonomous robotic mower equipped with sensors, controllers, and automated navigation systems. This substitution eliminates the need for operator presence in the noisy and dusty environment while maintaining mowing functionality through automated blade engagement and terrain detection.
Solution Approach 2:
The robotic mower is designed to operate autonomously without continuous human intervention. It incorporates self-navigation capabilities, automatic height adjustment mechanisms, and self-monitoring systems that allow it to perform mowing tasks independently, thereby removing the operator from harmful exposure while preserving productivity.
2Reliability
If continuous manual control is required during operation, then mowing precision is maintained, but operator physical fatigue increases and accident risk rises
Solution Approach 1:
The robotic mower incorporates multiple sensors including collision detection sensors, height adjustment sensors, and position tracking systems that continuously monitor operating conditions and provide feedback to the control system. This feedback mechanism maintains mowing precision by automatically adjusting blade height and detecting obstacles without requiring operator attention or physical control.
Solution Approach 2:
Manual control mechanisms are replaced with automated control systems including microcontrollers, sensors, and actuators that manage blade engagement, height adjustment, and navigation. This substitution eliminates operator physical fatigue and accident risk while maintaining operational precision through electronic control and real-time sensing.
3Device complexity
If the cutting assembly is fixed in position, then structural simplicity is maintained, but adaptability to different cutting heights is reduced
Solution Approach 1:
The cutting assembly is designed with dynamic height adjustment capabilities through a blade carrier lifting assembly that can change position based on terrain requirements. This dynamic structure allows the mower to adapt to different cutting heights while maintaining reasonable structural complexity through controlled mechanical or electro-mechanical adjustment mechanisms.
Solution Approach 2:
The cutting system is divided into separable components including the blade carrier, lifting mechanism, and height adjustment assembly. This segmentation allows independent adjustment of cutting height without redesigning the entire structure, providing versatility while maintaining modular simplicity that facilitates manufacturing and maintenance.
Data Source
AI summary
A mower includes: a housing; a movable upper cover, disposed on the housing; and a cutting assembly, disposed on the housing. The cutting assembly includes a blade carrier assembly, and the blade carrier assembly includes a blade carrier and a blade. The blade carrier includes a disc body and a blade receiving groove recessed inwardly from an edge of the disc body along an axial direction of the disc body. The blade is mounted in the blade receiving groove and arranged to be that the blade is not protruded out of the blade receiving groove in the axial direction of the disc body.