Autonomous Mower Height Adjustment Mechanism
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Solution Overview
Problem
Robotic lawn mowers face issues with stalling or damage when operating on uneven ground or encountering obstacles due to the cutting unit being subjected to large upward impacts.
Innovation Solution
An autonomous working apparatus with a working mechanism featuring a height variable mechanism that allows the cutting unit to adjust its height, preventing direct impact and damage by lifting upwards when encountering obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cutting unit is fixed at a low position to maintain contact with the ground, then mowing effectiveness is improved, but the cutting unit is prone to stalling or damage when encountering uneven ground or obstacles
Solution Approach 1:
The cutting unit is designed with dynamic height adjustment capability, allowing it to move between a low position (for effective mowing) and a high position (for avoiding obstacles). The height adjustment mechanism includes a lifting机构 that can raise the cutting unit when obstacles are detected, preventing stalling and damage while maintaining ground contact during normal operation.
2Reliability
If the cutting unit is allowed to move freely upward to avoid obstacles, then damage prevention is improved, but the cutting unit may lose contact with the ground and reduce mowing effectiveness
Solution Approach 1:
The system incorporates sensors (such as ultrasonic sensors or contact sensors) that detect obstacles and ground conditions in real-time. When an obstacle is detected, the control system activates the height adjustment mechanism to lift the cutting unit, avoiding damage. After passing the obstacle, the cutting unit returns to its low position to maintain effective ground contact, thus balancing protection and productivity through continuous feedback control.
3Adaptability or versatility
If a height adjustment mechanism is added to allow upward movement, then obstacle avoidance is improved, but the device complexity increases
Solution Approach 1:
The height adjustment mechanism uses a dynamic lifting机构 that can be activated only when needed, rather than maintaining a complex adjustable structure continuously. The mechanism includes a motor-driven lifting unit that raises the cutting unit vertically when obstacles are detected, and allows smooth return to the working position, providing terrain adaptability with controlled structural complexity.
Data Source
AI summary
An autonomous working apparatus includes a main body mechanism, a moving mechanism, a working mechanism and a control module. The main body mechanism includes a support body, and the working mechanism is configured to be installed on the support body. The working mechanism has an operating member and a height variable mechanism. The height variable mechanism is configured to be movably connected with the operating member. The operating member is configured to be rotatably connected to the support body, and the operating member is configured to operatably drive the height variable mechanism to move along the height adjustment direction. The force between the operating member and the height variable mechanism is caused by the gravity of the height variable mechanism, and the force between the operating member and the support body is caused by the gravity of said operating member and of said height variable mechanism.