Pivotable Lawn Dethatcher with Rear Thatch Accumulation
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Solution Overview
Problem
Current dethatching devices require operators to leave the vehicle repeatedly to manually collect and remove thatch, increasing time and injury risk due to the need for frequent disengagement from the dethatching process.
Innovation Solution
A vehicle-mounted lawn dethatching device with pivotably coupled tines and dual sets of wheels allows for continuous operation by switching between dethatching and non-dethatching positions, enabling thatch accumulation without the operator needing to leave the vehicle, using a first set of wheels for forward dethatching and a second set for reverse piling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operator manually pulls and removes thatch from the front of the dethatcher, then the thatch is cleared from the tines, but the operator must leave the vehicle repeatedly which increases time loss and injury risk
Solution Approach 1:
The dethatcher is equipped with a thatch collector and accumulation system that automatically collects and accumulates thatch at the rear of the device, eliminating the need for operator intervention to remove thatch from the front tines. The system serves itself by continuously managing thatch during operation.
Solution Approach 2:
A thatch collector acts as an intermediary between the dethatching tines and the accumulated thatch pile. This intermediary component captures thatch as it is pulled from the lawn and transports it to the accumulation area, preventing thatch from blocking the front tines without requiring operator intervention.
2Productivity
If the dethatcher accumulates thatch at the front during operation, then thatch is collected continuously, but the accumulated thatch blocks the path and requires manual intervention to clear
Solution Approach 1:
The thatch accumulation system relocates thatch collection from the front horizontal plane to the rear vertical plane. By positioning the thatch collector and accumulation pile at the rear of the dethatcher, the system creates a separate dimensional space for thatch storage that does not interfere with the forward path of the dethatching tines.
Solution Approach 2:
The dethatcher is segmented into distinct functional zones: a front dethatching zone with tines for cutting thatch, and a rear accumulation zone with a thatch collector for storing thatch. This segmentation separates the thatch-cutting function from the thatch-storage function, allowing both to operate simultaneously without interference.
3Productivity
If the operator remains in the vehicle during dethatching, then operational continuity is maintained, but manual thatch removal requires repeated disengagement from the vehicle
Solution Approach 1:
The automated thatch collection and accumulation system enables continuous dethatching operation without interruption. The thatch collector continuously captures thatch as it is pulled from the lawn, and the accumulation system continuously stores it at the rear, maintaining uninterrupted dethatching action throughout the operation.
Data Source
AI summary
A towable lawn dethatching device for use with a vehicle, containing:a. a frame having a front end, a rear end, a top, a bottom and two sides;b. a plurality of horizontally spaced apart tines supported by the frame; each of the plurality of horizontally spaced-apart tines having a first end and a second end;c. at least one wheel supported by the frame;d. a mounting portion adapted to pivotably couple the lawn dethatching device to the vehicle in a vertical axis, the lawn dethatching device is moveable between:e. a first position wherein the plurality of horizontally spaced-apart tines are in a dethatching position, wherein the first end of each of the plurality of horizontally spaced-apart tines is above the second end of each of the plurality of horizontally spaced-apart tines, to dethatch and accumulate thatch while the vehicle is moving in a first direction; andf. a second position wherein the plurality of horizontally spaced-apart tines are in a non-dethatching position, allowing the accumulated thatch of the first position to be collected into a pile while the vehicle is moving in a second direction.