Soil Work Device Pre-Tensed Roller Element
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Solution Overview
Problem
Existing soil cultivation devices face challenges in achieving uniform ground penetration and adaptability to uneven terrain while maintaining cost-effectiveness and compactness, leading to uneven soil cultivation and potential turf damage.
Innovation Solution
The soil cultivation device features a design with multiple tool units, where at least two are directly articulated on the device frame for tilting and pivoting, and a third unit is indirectly connected, allowing for greater freedom of movement and elastic pretensioning of the articulation area to ensure uniform penetration depth across the working width, using freely rotatable roller elements and simplified linkage mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple tool units are directly articulated on the device frame for tilting and pivoting, then adaptability to uneven ground is improved, but device complexity increases
Solution Approach 1:
The device is divided into multiple independently articulated tool units (first tool units directly on frame, second tool units indirectly via first units). Each unit can tilt and pivot independently to adapt to uneven ground, while the segmented structure prevents the entire device from becoming overly complex.
Solution Approach 2:
Second tool units are indirectly connected to the device frame through the first tool units, merging the articulation functions. This allows the second units to benefit from the adaptability of the first units without requiring separate direct articulation mechanisms to the frame, thereby reducing overall complexity.
2Object-affected harmful factors
If roller elements are freely rotatable, then turf damage is minimized, but uniform penetration depth is difficult to maintain
Solution Approach 1:
The roller elements are designed to rotate freely at variable speeds rather than at a fixed speed. This dynamic adaptation allows each roller to optimize its rotation based on local ground conditions, minimizing turf damage while the elastic pretensioning mechanism works to maintain uniform penetration depth across the working width.
Solution Approach 2:
The system changes the parameter of rotation speed from fixed to variable, allowing roller elements to adapt their rotational velocity to local conditions. This enables minimal turf damage while the elastic pretensioning compensates for penetration depth variations.
3Manufacturing precision
If elastic pretensioning is applied to articulation area, then uniform penetration depth is achieved, but device complexity increases
Solution Approach 1:
An elastic pretensioning element is introduced as an intermediary component in the articulation area between the device frame and tool units. This element passively provides the necessary pretensioning force to maintain uniform penetration depth without requiring complex active control systems, sensors, or motors.
Solution Approach 2:
The elastic pretensioning element automatically adjusts and maintains uniform penetration depth through its elastic properties, without requiring external control or intervention. The system self-regulates the pretensioning force based on the ground conditions and tool unit position.
4Area of stationary object
If tool units are arranged offset in transverse and movement directions, then coverage width is maintained, but device compactness is reduced
Solution Approach 1:
The tool units are arranged offset from each other but can tilt and pivot dynamically to align their working surfaces. This dynamic capability allows the device to maintain full coverage width while adopting a more compact configuration during transport or when not in use, reducing the volume occupied.
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 design achieves uniform soil cultivation and adaptation to uneven ground without increasing manufacturing costs or complexity, ensuring even penetration depth and minimizing turf damage through elastic pretensioning and aligned axes of rotation.
Implementation Method 1
at least one elastic element (52) assigned to the articulation area (47) is provided, in that the elastic element (52) is pretensioned in the direction of the ground
Implementation Method 2
The roller elements (12) are freely rotatable, so that a simple construction without self-propelling of the rollers is created. Due to the free rotation, the rotation speed of the rollers adapts to the movement relative to the ground, so that damage to the turf is kept to a minimum.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The device (10) has tool units (28, 29, 30) arranged together and moved in a direction perpendicular to a moving direction of the device. The tool unit (30) is provided between the tool units (28, 29) that are articulated on a frame (14) in a tiltable and/or pivotable manner. The tool unit (30) is articulated in a tiltable and/or pivotable manner, for position-variable, indirect linkage on the frame at the tool units (28, 29). A coupling area (46) of the tool units (28, 29) is articulated at the tool unit (30). The coupling area is elastically prestressed relative to the frame in the ground.