Potato Planter Parallelogram Linkage for Depth Control
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Solution Overview
Problem
Existing potato planting devices face challenges in achieving variable planting depth settings with minimal technical effort, protecting furrow openers from overload, and optimally responding to changing soil and working conditions in cramped installation spaces.
Innovation Solution
A potato planting device with an adjustable cover assembly and a multi-lever linkage system that integrates mechanical and sensory controls, allowing for optimal positioning relative to the soil surface and providing additional safety functions, including a joint and control chain with a Y-shaped strut link and steering parallelogram to compensate for overloads and maintain optimal working position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid connection is used between the furrow opener and support frame, then structural stability is improved, but the furrow opener cannot compensate for overloads when hitting obstacles
Solution Approach 1:
The patent applies the dynamics principle by replacing the rigid connection with a dynamic parallelogram linkage mechanism. This mechanism allows the furrow opener to pivot and adjust its position dynamically when encountering obstacles or varying soil conditions, while maintaining overall structural stability through the geometric constraints of the parallelogram configuration.
Solution Approach 2:
The patent segments the connection between the furrow opener and support frame into multiple independent components: the parallelogram linkage with pivoting joints, the longitudinal support tube, and the control chain. This segmentation allows each component to independently handle specific functions - the parallelogram provides dynamic adjustment, the support tube provides structural stability, and the control chain provides sensing and control.
2Device complexity
If the planting depth is adjusted manually, then device complexity is reduced, but adaptability to changing soil conditions deteriorates
Solution Approach 1:
The patent implements feedback control by equipping the furrow opener with sensors that detect soil conditions and obstacle presence. This sensory information is fed back to the control system, which automatically adjusts the planting depth and furrow opener position through the parallelogram linkage, enabling adaptability without complex manual adjustment mechanisms.
Solution Approach 2:
The system performs self-adjustment through the automated control mechanism that responds to sensor inputs. The furrow opener and planting depth are automatically regulated based on real-time soil conditions, eliminating the need for continuous manual intervention while maintaining simple device architecture.
3Ease of manufacture
If the cover assembly is fixed in position, then manufacturing simplicity is improved, but the ability to respond to changing working conditions deteriorates
Solution Approach 1:
The cover assembly is designed with dynamic positioning capability through the parallelogram linkage mechanism. The cover can pivot and adjust its position dynamically in response to sensor-detected working conditions, while the overall mechanism remains relatively simple to manufacture using standard linkage components and joints.
Data Source
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AI summary
The potatoes planter has planting assemblies formed by engaging a unit into a support frame (2), where a planting unit is provided interacting with an upper storage tank (6) for root tubers (K') for single row planting process (R). A molder generating a seedbed is provided below the planting unit. A farmland is provided on the cover element (17). A longitudinal strut tube (20) interacts with a multi-lever gear (G') that controls the molder, as well as interacts with the connecting part.