Row Planter Lock Assembly Reducing Hydraulic Stress
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Solution Overview
Problem
Conventional row planters experience stress and failure due to hydraulic system strain during transport, especially over rough terrain, and require a quick and easy mechanism to alternate between raised and lowered positions for different crop planting configurations, leading to downtime and increased expenses.
Innovation Solution
A mechanical lock mechanism for the bracket assembly of row planters, utilizing an over-center lever and spring-biased lock arm that engages a detent or notch to securely hold the planter in a raised position, reducing hydraulic pressure and preventing downward movement, with an alternative embodiment using a rotatable lock arm and pin for added stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hydraulic system is used to maintain the row planter in the raised transport position, then the planter can be easily positioned, but significant stress is placed on the hydraulic components leading to failure
Solution Approach 1:
The lock arm is positioned in advance to engage the mount plate before the planter is fully raised, preventing the planter from descending and relieving hydraulic pressure. This preliminary mechanical engagement eliminates the need for the hydraulic system to continuously maintain the raised position, reducing stress and preventing failure.
Solution Approach 2:
The patent replaces the hydraulic system's continuous load-bearing function with a mechanical lock arm that physically engages the mount plate. This mechanical substitution transfers the support function from the hydraulic components to a dedicated mechanical locking mechanism, eliminating hydraulic stress while maintaining positioning capability.
2Adaptability or versatility
If alternating planters are raised and lowered for corn planting on 30-inch rows, then the correct row spacing is achieved, but a quick and easy lock mechanism is required to hold planters in position
Solution Approach 1:
The lock arm is designed to be manually operated by the farmer, who can quickly engage or disengage it without requiring additional tools or complex procedures. The simple manual operation allows the farmer to independently and rapidly position planters in the desired raised or lowered state, minimizing time loss while achieving the required row spacing adaptability.
3Reliability
If a lock mechanism is added to the bracket assembly, then the planter can be securely held in the raised position, but the device complexity increases
Solution Approach 1:
The locking function is segmented from the main bracket assembly into a separate, modular lock arm component. This segmentation allows the lock arm to be independently designed, installed, and maintained without affecting the core bracket assembly. The modular approach adds the necessary positioning reliability while minimizing the increase in overall system complexity through functional separation.
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
The lock mechanism effectively reduces hydraulic stress, allows quick position changes, and maintains the planter in a raised position, thereby minimizing downtime and operational costs by relieving hydraulic pressure during transport and ensuring safe, effective, and durable operation.
Implementation Method 1
A spring extends between the actuator and the lock arm to bias the lock arm in the locked and unlocked positions as the actuator moves over center
Data Source
AI summary
A lock assembly is provided for a row planter unit to maintain the unit in a raised transport position and to relieve stress on the hydraulic system of the planter unit. The lock assembly includes a lock arm pivotally mounted to the bracket assembly of the row planter unit for selective receipt in a notch or detent on the mounting plate or mast of the bracket assembly so as to retain the row unit in the raised transport position. The lock arm can be disengaged from the bracket assembly notch or detent, such that the planter unit can be lowered to the field use position.