Electromagnetic Clutch for Planting Machine Row Control
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Solution Overview
Problem
Existing planting machines for tubers, such as potatoes, face challenges in precise control over the extension of individual rows due to time-consuming coupling device transitions, leading to imprecise deposition of tubers.
Innovation Solution
The use of an electromagnetic clutch with a magnetic field for coupling and decoupling the laying devices allows for rapid switching with short reaction times, enabling precise control over tuber placement and reducing the space required for the coupling device, along with a torque arm for mechanical support and a control unit for centralized control of the coupling devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a mechanical coupling device with levers and actuators is used to switch planting devices on and off, then the structure is simple and easy to manufacture, but the switching time is long and reaction time is slow
Solution Approach 1:
The patent replaces the traditional mechanical coupling device with an electromagnetic coupling device. The electromagnetic coupling uses magnetic fields to transmit torque from the drive shaft to the conveying element, eliminating the need for mechanical levers, actuators, and longitudinal movement mechanisms. This substitution dramatically reduces switching time and reaction time while maintaining torque transmission capability.
Solution Approach 2:
The patent changes the operating parameters of the coupling device by using electromagnetic fields instead of mechanical forces. The electromagnetic coupling can be activated or deactivated by changing electrical parameters (current on/off), which allows for extremely rapid switching compared to mechanical systems that require physical movement of components.
2Area of stationary object
If a traditional mechanical coupling device is used, then the structure is straightforward, but the installation space required is large
Solution Approach 1:
The electromagnetic coupling device replaces complex mechanical components (levers, actuators, multiple moving parts) with a more compact electromagnetic system. This substitution reduces both the installation space required and the structural complexity of the coupling device while achieving the same functional outcome of transmitting torque when engaged.
3Reliability
If mechanical coupling devices with long travel distances are used, then the coupling is reliable, but the footprint and installation space increase
Solution Approach 1:
The electromagnetic coupling eliminates the need for long travel distances and extensive mechanical movement. The magnetic field can be activated or deactivated instantaneously without requiring physical components to move through long distances, thereby maintaining coupling reliability while significantly reducing the footprint and installation space required.
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 solution enables the laying devices to be operated with short reaction times, allowing for precise positioning of tubers and reducing the risk of over-deposition or under-deposition, while minimizing the installation space needed for the coupling device, thus improving the precision and efficiency of tuber placement.
Implementation Method 1
The electromagnetic coupling 10 has two coupling partners, in particular a drive shaft 12 and a hollow shaft 16, which are movable relative to one another. The coupling 10, and in particular at least one of the two coupling partners 12, 16, is designed to generate a magnetic field.
Implementation Method 2
In particular, the magnetic field extends from one coupling partner to the other and, depending on the coupling design, leads to the separation or the joining of the coupling partners. In particular, a coil is provided for this purpose, which, when a current is applied, generates a magnetic field that leads to the connection or separation of the coupling partners.
Data Source
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AI summary
Planting machine (2) for planting tubers, wherein the planting machine (2) comprises at least one hopper (4) for storing the tubers, at least two planting devices (6), each having at least one conveying element rotating during operation of the planting device (6), and at least one drive device, wherein at least one of the planting devices (6), in particular each planting device (6), has a coupling device (8) which can be moved from a coupling position, in which during operation at least one conveying element of the planting device (6) is driven by the drive device, to a disconnecting position, in which during operation the conveying element is not driven by the drive device, wherein the coupling device has an electromagnetic coupling (10) or is designed as an electromagnetic coupling (10).