Split Magnetic Pole Unit for Single Steel Plate Lifting

The patent divides the single large coil into multiple independent small coils arranged in an array. Each small coil can be independently controlled to generate magnetic flux, allowing precise control over which steel materials are attracted. This segmentation resolves the contradiction by maintaining sufficient total attracting force while preventing magnetic flux saturation that causes unnecessary plates to be attracted.

The patent applies different magnetic field characteristics to different regions by using independently controllable small coils. Each coil can be activated or deactivated based on the specific lifting requirements, creating localized magnetic flux distribution. This allows precise control over the number of steel materials attracted without requiring uniform magnetic field control across the entire lifting surface.

The patent segments the control system into multiple independent small coil units, where each coil can be independently switched on or off. This simplifies the control logic compared to continuous current modulation, as each coil unit operates in a binary state (on/off) rather than requiring precise current regulation. The segmented approach reduces control system complexity while maintaining precise control over the number of plates lifted.

The patent enables the lifting magnet system to automatically control the number of plates lifted by independently activating specific small coils based on predetermined patterns. The system can autonomously determine which coils to activate to lift the desired number of plates without requiring complex real-time current adjustment or operator intervention, thereby facilitating automation.

The patent merges multiple small coil units into a single integrated lifting magnet structure with a common yoke and frame. While the lifting magnet contains multiple independent coils for automated control, these coils are structurally integrated rather than being separate units. This merging approach reduces the overall weight compared to using multiple independent lifting magnets, while maintaining the automation capabilities provided by independent coil control.

The patent designs the small coils to serve multiple functions: they generate magnetic flux for attracting steel materials, can be independently controlled for precise number of plates lifted, and their integrated structure reduces overall system weight. The common yoke and frame structure serves both structural support and magnetic flux conduction purposes, reducing the need for additional components and thereby reducing weight.

The patent segments the magnetic flux generation into multiple independent small coils that can be activated only when needed. Rather than continuously operating a single large coil that generates excessive magnetic flux and heat, the system activates only the specific number of small coils required to lift the desired number of plates. This reduces overall power consumption and heat generation while maintaining sufficient attracting force.

The patent applies partial action by activating only the necessary number of small coils to achieve the required attracting force for the specific lifting task. Instead of using full capacity of a large coil that generates excessive heat, the system uses just enough magnetic flux from the appropriate number of small coils, thereby reducing energy consumption and heat generation while maintaining sufficient attracting force.