Spreader Cover Actuation via Electromechanical Gear Drive
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Solution Overview
Problem
Existing distribution machines face challenges with moisture-induced caking of powdery materials, difficult manual operation of covers, and high maintenance costs due to hydraulic or electric actuators, which compromise dosing accuracy and container integrity, especially under adverse weather conditions.
Innovation Solution
A distribution machine with a cover actuated by an electromotive drive unit featuring a gear arrangement downstream of the electric motor, eliminating the need for hydraulic or electric cylinders, and allowing for compact, low-maintenance, and safe operation, including a detachable driver for manual operation in case of failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If hydraulic or electric actuators are used to actuate the cover, then the cover can be automated, but maintenance costs increase and reliability decreases
Solution Approach 1:
The patent replaces complex hydraulic or electric actuators with a simple electric motor coupled directly to the cover pivot axis through a gear mechanism. This substitution eliminates the need for hydraulic lines, complex electric cylinders, or pneumatic systems, thereby reducing maintenance requirements and improving reliability while maintaining automation.
Solution Approach 2:
The patent extracts and eliminates the intermediate transmission components (hydraulic cylinders, electric cylinders, or pneumatic actuators) that mediate between the power source and the cover. By coupling the electric motor directly to the cover axis through a simple gear, the system removes the problematic intermediate stages that require maintenance and reduce reliability.
2Device complexity
If manual operation of the cover is used, then device complexity is reduced, but ease of operation deteriorates and user safety decreases
Solution Approach 1:
The system provides automated self-service for cover actuation through a simple electric motor control system. The motor automatically opens or closes the cover based on control signals, eliminating the need for manual physical effort while maintaining simple overall system design. The detachment mechanism allows the system to revert to manual operation if needed.
3Device complexity
If the cover is manually operated, then device complexity is reduced, but the risk of user injury increases
Solution Approach 1:
The patent replaces manual mechanical operation with an automated electric motor system that controls cover movement. This substitution eliminates the risk of pinching or injuring users' hands and limbs during cover operation, while the simple gear mechanism keeps overall device complexity low. The motor provides controlled, predictable movement that can be stopped or reversed if obstacles are detected.
4Extent of automation
If hydraulic actuators are used for cover actuation, then automation is achieved, but maintenance costs and device complexity increase
Solution Approach 1:
The patent extracts and removes the complex hydraulic transmission system from the cover actuation mechanism. Instead of using hydraulic cylinders with lines, valves, and pumps, the system uses a direct electric motor-to-gear-to-cover-axis connection, dramatically simplifying the actuation system while maintaining automation capability.
Solution Approach 2:
The patent substitutes the hydraulic mechanical system with an electric motor system. This replacement eliminates hydraulic fluid, seals, lines, and complex mechanical linkages, resulting in a simpler, more maintainable automated actuation system that directly drives the cover pivot axis.
5Extent of automation
If electric cylinders are used for cover actuation, then automation is achieved, but maintenance requirements and device complexity increase
Solution Approach 1:
The patent extracts and eliminates the electric cylinder component from the actuation system. Instead of using an electric cylinder with its motor, gear train, and mechanical linkages, the system uses a simplified electric motor directly coupled to a gear that drives the cover axis, reducing complexity while maintaining automated functionality.
Solution Approach 2:
The patent substitutes the electric cylinder mechanism with a simpler electric motor-and-gear arrangement. This replacement removes the intermediate mechanical transmission stages of the electric cylinder, resulting in a more direct, simpler, and equally effective automated actuation system.
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 solution provides a robust, reliable, and cost-effective cover actuation system that maintains container integrity and ensures precise dosing, even in adverse conditions, with reduced risk of user injury and contamination, while allowing for easy retrofitting of manually operated covers.
Implementation Method 1
an electromotive drive unit with at least one gear arranged downstream of its electric motor
Data Source
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AI summary
A distribution machine, particularly in the form of a spreader or seed drill, is proposed, comprising a container (2) supported by a frame for receiving powdered or particulate material, a discharge opening located at the bottom of the container (2), a metering element downstream of the discharge opening, and a distribution element downstream of the metering element for distributing the powdered or particulate material on the ground. The container (2) has an electrically operated cover (3) that can be opened and closed about a pivot axis (A), which, in its closed position, covers the opening cross-section of the container (2) and, in its open position, exposes at least part of the opening cross-section of the container (2).The invention provides that the cover (3) is actuated by an electromechanical drive unit (6) fixed to the container (2) or to its support frame, which has an output shaft (8) on which a driver (9) is non-rotatably mounted, which is connected to or formed by a pivotable support (3a) of the cover (3).