The structure of electric rotary crane hooks

Structure

1.Hook Body

The hook body is typically made of high - strength alloy steel to withstand heavy loads. It has a curved shape designed to securely hold the lifting sling, chain, or other load - attachment devices. The size and shape of the hook vary depending on the load - capacity requirements of the crane.

2.Rotational Mechanism

• Electric Motor: This is the power source for the rotation. It is usually a compact, high - torque motor that can be precisely controlled. The motor is connected to a gearbox or a transmission system to reduce the speed and increase the torque for smooth rotation.
• Gearbox/Transmission: The gearbox or transmission system transfers the power from the electric motor to the hook. It helps to achieve the desired rotational speed and provides the necessary mechanical advantage to rotate heavy loads.

3.Control System

The control system allows the operator to control the rotation of the hook. It can be integrated with the crane's main control panel or have a separate control unit. The control system may include buttons or joysticks for forward and reverse rotation, as well as speed adjustment.