The technical details of the explosion-proof electric hoist cone motor mainly involve its design characteristics, working principle, safety performance, and use and maintenance. The following is a detailed explanation of these aspects:

1、 Design Features

Shell material and strength:

The shell material of the explosion-proof electric hoist cone motor is usually made of HT200 cast iron. After processing, a 1-minute 1Mpa water pressure test is required to ensure that the shell has sufficient strength to meet explosion-proof, dustproof and other requirements.

Braking performance:

The motor adopts a fully enclosed squirrel cage conical braking design, with a high torque of 2-3 times the rated torque, to adapt to the direct starting of the explosion-proof electric hoist during intermittent operation. In addition, after the electric motor is powered off, the explosion-proof electric hoist can reach a stop in a relatively short time, improving the braking performance.

Integrated design:

The conical rotor motor integrates the functions of the motor and the brake, with a compact design and simple structure, reducing the failure rate and improving the overall performance of the system.

2、 Working principle

Power on status:

When the electric motor is powered on, its air gap magnetic field generates axial magnetic tension, compresses the brake spring, and separates the brake disc from the brake pad on the motor end cover. At this time, the motor can rotate freely, driving the lifting device to lift or move.

Power off status:

When the electric motor is powered off, the axial magnetic pulling force disappears, and the rotor moves axially under the thrust of the brake spring, causing the brake disc to press the brake pad and generate friction, thereby quickly stopping the motor and locking the rotor to prevent the heavy object from falling and ensuring safety.

3、 Security performance

Explosion proof performance:

The explosion-proof electric hoist cone motor ensures safety when used in flammable and explosive environments by adopting special explosion-proof designs such as fully enclosed enclosures and explosion-proof junction boxes.

Braking reliability:

The mechanical braking principle of a conical rotor motor is more reliable than electrical braking, and can quickly and effectively brake in the event of a power outage, preventing heavy objects from falling.

4、 Usage and maintenance

Power requirements:

Explosion proof electric hoist cone motor usually uses a 50Hz, 380V power supply. When the power supply voltage is too low, it will affect the normal operation of the motor. During the starting and rising operation of the motor, the voltage shall not be lower than 90% of the rated voltage.

Daily maintenance:

Regularly inspect the casing, junction box, brake and other components of the motor to ensure they are in good condition, and replace them promptly if damaged.

The bearing grease is generally replaced every six months, and the old grease should be eliminated during replacement. After cleaning, new grease should be injected.

Pay attention to the operating condition of the motor. If there are any abnormal sounds, vibrations, etc., stop the machine for inspection in a timely manner.

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