Seed Planter Depth Adjustment via Cam Mechanism
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Solution Overview
Problem
Current seed planting units in agricultural implements require time-consuming adjustments for changing the penetration depth of multiple openers, leading to decreased seeding efficiency due to the complexity of reconfiguring the depth settings.
Innovation Solution
The seed planting unit incorporates a depth stop member and a depth adjustment member with a graduated profile, allowing for quick and precise adjustment of the penetration depth by rotating the depth adjustment member relative to the support structure or wheel support arm, and includes a biasing element to maintain the desired setting, enabling efficient reconfiguration across multiple units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the packer arm is adjusted by removing and resecuring fasteners in different openings, then the penetration depth of the opener can be adjusted, but the adjustment process becomes time-consuming
Solution Approach 1:
The packer arm adjustment mechanism transitions from a static fastener-based system to a dynamic cam-based system. The cam profile allows the packer arm to be quickly repositioned to different depth settings by simply moving the packer wheel along the cam surface, eliminating the need to remove and resecure fasteners. This dynamic adjustment mechanism significantly reduces adjustment time while maintaining precise penetration depth control.
Solution Approach 2:
The cam profile is pre-configured with multiple predetermined depth settings corresponding to different positions along its surface. These settings are prepared in advance during manufacturing, allowing the operator to quickly select the desired depth by positioning the packer wheel at the appropriate location on the cam without performing complex adjustment procedures. This preliminary preparation of adjustment positions eliminates time-consuming fastener operations.
2Adaptability or versatility
If multiple openers are equipped with individual adjustment mechanisms, then each opener can maintain the same penetration depth setting, but the total adjustment duration is multiplied by the number of openers
Solution Approach 1:
The cam-based adjustment mechanism serves as a universal solution for all openers on the agricultural implement. Each opener is equipped with an identical cam mechanism that can be adjusted using the same procedure, making the adjustment process standardized and repeatable across all units. This universality allows operators to efficiently adjust multiple openers without learning different adjustment procedures for each unit, thereby maintaining individual depth setting capability while improving overall seeding efficiency.
3Manufacturing precision
If the packer wheel vertical position is varied to adjust penetration depth, then the opener penetration depth can be controlled, but the mechanism complexity increases
Solution Approach 1:
The invention controls penetration depth by changing the vertical position parameter of the packer wheel through a cam mechanism. The cam profile is designed with specific geometric parameters that correspond to different depth settings. By varying the cam profile geometry and the position where the packer arm contacts the cam surface, precise penetration depth control is achieved. This parameter-based approach provides precise control while keeping the mechanical structure relatively simple compared to multi-component adjustment systems.
Data Source
AI summary
A seed planting unit of an agricultural implement may include a wheel support arm having an upper portion and a lower portion. A wheel may be rotatably supported by the lower portion of the wheel support arm, the wheel configured to contact the soil surface to define a penetration depth setting for the ground engaging tool relative to the soil surface. A depth stop member may be provided in operative association with one of the support structure or the wheel support arm. A depth adjustment member may be selectively movable relative to the other of the support structure or the wheel support arm to vary a relative distance between an abutment portion of the depth adjustment member configured to abut against the depth stop member and the other of the support structure or the wheel support arm to set the penetration depth setting for the ground engaging tool.