Spring-Tine Rake Scarifier with Mower for Lawn Thatch Removal
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Solution Overview
Problem
Current landscape maintenance devices require high technical effort and complexity to effectively remove lawn thatch and moss, often necessitating separate operations and additional machinery, which is inefficient and labor-intensive.
Innovation Solution
A lawn treatment machine combining a mower and a spring-tine rake scarifier, where the spring-tine rake is connected to the machine via a standard front coupling, allowing for optimal scarifying without additional drive power, with adjustable working depth and compensation for ground unevenness, enabling simultaneous cutting and collection of debris.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a scarifier is attached to the rear of the lawn tractor with additional drive motor, then scarifying capability is improved, but device complexity increases significantly
Solution Approach 1:
The patent combines the scarifier and mower into a single integrated device where the scarifier is positioned in front of the mower. The scarifier uses the forward motion of the lawn tractor to operate without requiring a separate drive motor, while the mower collects both fresh clippings and pre-combed thatch. This merging eliminates the need for a second motor and reduces overall system complexity while maintaining dual functionality.
Solution Approach 2:
The lawn tractor serves multiple functions: it provides the driving force for both the scarifier (through its forward motion) and the mower (through its drive system). The single motor of the lawn tractor is used universally to power both tools, eliminating the need for separate drive systems and reducing device complexity while enhancing versatility.
2Productivity
If separate operations are used for scarifying and mowing, then processing effectiveness is improved, but loss of time increases
Solution Approach 1:
The patent merges the scarifier and mower into a single integrated device that performs both functions simultaneously during one pass. The scarifier combs the thatch in front of the mower, and the mower immediately collects the pre-combed material along with fresh clippings, eliminating the need for separate operations and reducing time loss.
Solution Approach 2:
The scarifier performs preliminary action by combing and loosening the thatch before the mower passes over the same area. This pre-processing makes the subsequent mowing and collection more effective, as the thatch is already broken up and ready to be collected, improving overall processing effectiveness in a single pass.
3Device complexity
If spring tines are arranged directly on the mower, then device complexity is reduced, but manufacturing precision decreases
Solution Approach 1:
The patent segments the scarifier into a separate, independently adjustable unit positioned in front of the mower. This allows the spring tines to be optimized for scarifying with appropriate spacing and angles, while the mower remains optimized for cutting and collection. The segmentation enables each component to be manufactured and adjusted with optimal precision for its specific function.
Solution Approach 2:
The scarifier is designed with adjustable spring tines that can be independently positioned and angled relative to the ground. This dynamic adjustability allows optimization of the spring tine configuration for effective scarifying, separate from the mower's fixed cutting geometry, thereby maintaining manufacturing precision for both functions.
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 combined system allows for efficient and simplified removal of lawn thatch and moss, reducing technical complexity and effort by using the mower to collect pre-processed material, resulting in a cleaned lawn area with minimal additional drive power and ease of use.
Implementation Method 1
a scarifier (3) designed as a spring-tine rake to be connected to the machine (1) in the area of a standard front coupling (4)
Data Source
Figure 1
Figure 2~4
Figure 5
AI summary
The landscape support device has a support tool (2) formed as mower, sweeping broom and has another support tool (3) in form of a scarifier. The processing machine (1) is provided with a spring-tine rake (F) as the latter support tool in the area before the first support tool.