The working principle of a running electric hoist, also commonly referred to as an electric hoist, involves several key components and processes. Here's a detailed explanation:

Components

A running electric hoist typically consists of a reducer, lifting motor, running motor, cut-off device (or safety device), cable slip line, drum device, hook device, coupling, soft cable current introducer, and other components. These components work together to enable the hoist to lift, move, and control loads.

Working Principle

Power Supply and Motor Operation:

The hoist is powered by an electric motor, which converts electrical energy into mechanical energy.

When the hoist is activated, power is supplied to the lifting motor and the running motor.

Lifting Mechanism:

The lifting motor drives the reducer, which in turn rotates the drum device.

As the drum rotates, the wire rope wrapped around it is wound or unwound, causing the hook device (and any attached load) to rise or fall.

Horizontal Movement:

The running motor enables the hoist to move horizontally along a track or beam.

This allows the hoist to position itself under or near the load that needs to be lifted.

Safety and Control:

The cut-off device (or safety device) monitors the operation of the hoist and can automatically shut it down if unsafe conditions are detected, such as overloading or over-speeding.

The cable slip line ensures that the power supply to the hoist remains connected as it moves along the track.

Modular Design and Efficiency:

Many electric hoists feature a modular design, which makes them easy to maintain and repair.

The integration of power and braking power within a single device enhances their efficiency and reliability.

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