The conversion process between constant speed (i.e. normal speed) and slow speed of MD1 electric hoist mainly depends on its internal mechanical and electrical design. This dual speed electric hoist has a wide range of applications in industrial production, warehouse management, construction sites, and other occasions, as it can meet the needs of rapid lifting and precise control when needed, such as precise loading and unloading, mold installation, machine tool maintenance, etc. The following is the detailed process of switching between constant speed and slow speed for MD1 electric hoist:

1、 Mechanical structure foundation

The MD1 electric hoist usually has a compact structure and light weight, making it easy to install and operate. Its core components include motors, reducers, brakes, drums, wire ropes, and control systems. These components work together to achieve the lifting and walking functions of the electric hoist.

2、 Dual speed conversion mechanism

Motor control:

The MD1 electric hoist adopts a dual speed motor or controls a single speed motor through a frequency converter to achieve dual speed function. The internal design of the motor or the control strategy of the frequency converter enables the motor to output two different speeds, thereby driving the electric hoist to switch between constant speed and slow speed.

Reducer design:

The reducer is a key component for electric hoists to achieve speed conversion. By changing the transmission ratio of the reducer, the lifting speed of the electric hoist can be adjusted without changing the motor speed. In the MD1 electric hoist, the reducer may be designed with multiple transmission ratios to adapt to different work requirements.

Control system:

The control system is the brain of the electric hoist, which receives operating instructions and controls the operation of the motor. In the MD1 electric hoist, the control system usually includes components such as operating handles, limit switches, contactors, relays, etc. By operating the buttons or switches on the joystick, it is easy to switch the operating speed of the electric hoist.

3、 Conversion process description

Start up and initial speed:

When the operator presses the start button, the control system turns on the power to the motor, and the motor starts running at a preset initial speed (usually constant speed). At this time, the reducer operates at a higher transmission ratio, and the electric hoist rises and falls at a faster speed.

Speed switching:

When it is necessary to switch to slow speed, the operator can send a signal to the control system through the buttons or switches on the joystick. After receiving the signal, the control system will adjust the operating parameters of the motor (such as voltage, current, etc.) or change the motor speed through a frequency converter, while adjusting the transmission ratio of the reducer. In this way, the lifting speed of the electric hoist will gradually decrease to a slow state.

Slow running:

In slow speed mode, the lifting speed of the electric hoist is smoother and more controllable, suitable for situations that require precise control. The operator can adjust the position and height of the electric hoist according to actual needs.

Restore constant speed:

When it is necessary to run at a constant speed again, the operator only needs to operate the button or switch on the handle again. The control system will adjust the operating parameters of the motor and the transmission ratio of the reducer accordingly to restore the electric hoist to a constant speed state.

4、 Precautions

When switching speeds, ensure that the electric hoist is in a safe state to avoid accidental collisions or falls.

Regularly inspect and maintain the mechanical components and electrical system of the electric hoist to ensure its normal operation and extend its service life.

Comply with relevant operating procedures and safety regulations to ensure the personal safety of operators and the safety of equipment.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment