How to use permanent magnet jacks when combined and linked
The permanent magnet jack can be used as a single unit or in combination with multiple units. The combined hoisting of multiple permanent magnet jacks is realized by a beam. Multiple permanent magnet jacks are suspended under a beam and can be used to lift large steel plates or other large and long magnetically conductive objects.
Move the permanent magnet jack combination to the very center of the sucked steel plate. Put down the joint hoist and let the rotating arm of each permanent magnet jack fall onto the top plate. This is, the pawl skips a tooth on the ratchet. Lifting the crane hook, the rotating arm of the permanent magnet jack is hoisted by the cross beam, and the pawl pushes the main shaft to rotate. When the ratchet wheel turns to the specified position, the permanent magnet jack generates magnetism and generates magnetic force. When the rotating arm rises to the apex, the magnetic force reaches the maximum, and multiple permanent magnet jacks will firmly hold the steel plate together. The crane hook continues to rise, and the sucked steel plate is hoisted together with the permanent magnet jack.
After the crane moves the hoisted steel plate to the designated position, lower the hook. After the steel plate falls to the ground, the rotating arm of the permanent magnet jack falls onto the top plate. This is, the pawl skips a tooth on the ratchet. Then lift the crane hook, the rotating arm of the permanent magnet jack is hoisted by the cross beam, and the pawl pushes the main shaft to rotate. When the rotating arm reaches the apex, the sucker is demagnetized and the sucked steel plate is separated from the permanent magnet jack.
Combination cranes should use permanent magnet lifting irons of the same model and tonnage, and ensure that the beams and the working surfaces of the suction cups of the permanent magnet jacks are in a horizontal position.
The combined crane may also have the phenomenon that the permanent magnet jacks are not synchronized. When it is found out of synchronization, the rotating arms of the synchronized permanent magnet jacks should be erected to make them inoperative. Then adjust the asynchronous permanent magnet jack according to the single asynchronous adjustment method. After the adjustment is completed, turn down the rotating arms of each permanent magnet jack, and the combined joint hoist can resume normal operation.
