Introduction of stopper, coupling and hook device of explosion-proof electric hoist
Many accessories of the explosion-proof electric hoist are specially treated, so that they can achieve the purpose of "explosion-proof" and truly achieve explosion-proof. The stopper, coupling and hook device of the explosion-proof electric hoist are also specially treated.
Stopper: In order to prevent the hook from exceeding the limit position of ascending, causing the wire rope to be broken, or exceeding the limit position when descending, the rope guide and the rope pressure plate are damaged and the wire rope is separated from the reel. Lifting is used Height limiter, to ensure that when the hook reaches the upper and lower limit positions, the power supply of the lifting motor is cut off in time, that is, the limit rod is driven by the guide rope, and the lifting switch circuit is cut off to ensure safety. Remember that the limiter and button are left out of the factory. The marked direction is corresponding, press the up button, the hook goes up, press the down button, the hook goes down, so the stopper must work. Conversely, if you press to raise or lower, and press to lower to raise, the stopper will not work. You should switch the three wires of the power supply to two.
Coupling: The torque of the motor is transmitted to the reducer through the claw-type elastic coupling, which can absorb the impact load and obtain a smooth start.
Hook device: The hooks are all die-forged with high-strength high-quality carbon steel, suspended on a single-row pressure ball bearing, and connected with the shell by a cross head, so that the hook can run freely. 0.5-5t adopts pulley type hook device, 10-32t adopts double pulley or three pulley type hook device, and the tail of the hook adopts a plate-type structure to make it easy to disassemble.
