Hengli Motor takes you to understand the mechanical protection of motors
The different operating locations or conditions of motors require various protection methods for constant force motors. The mechanical protection structure types of motors are divided into the following categories:
The live and rotating parts of the open type constant force motor do not have special protective devices, but protective nets must be added to the parts equipped with fans.
The anti drip motor has a protective cover installed on the live part, usually installed on the hole where something may fall into the motor.
The protective motor constant force motor has a special protective device to prevent objects from entering the interior of the motor. This type of motor cannot protect against dust, moisture, and gas. Most protective motors come with an attached fan and are protected and drip proof.
The enclosed motor is enclosed (but not sealed) around to prevent external air.
The anti drip and anti splash motor is a device that prevents water droplets and water flow from any direction from entering the interior of the motor.
Explosion proof motors prevent internal gas explosions from being transmitted to external gases, and are designed for isolation and explosion-proof purposes; The use of special and stricter safety and explosion prevention measures in electrical and mechanical aspects is referred to as increased safety explosion-proof.
The rotor slip ring of the enclosed slip ring motor should be placed in a special enclosed box. In this case, if there are no special technical requirements for ordering, the slip ring protection should not be lower than the protection of the motor itself; Usually, the protection of slip rings has a higher level.
The enclosed motor body is tightly sealed, and the motor will not allow moisture to enter even after being immersed in water for 4 hours.
Mechanical protection extension
Many protective motors with heat exchange openings with the outside air can be easily transformed into the following protection methods for opening obstruction:
● Drip proof type;
● Prevent water spray from tilting at a 30 ° angle to the horizontal plane;
A closed motor that prevents water spray from any direction and ventilation through the pipes below the machine base. For some motors with small total output, although the manufacturing of individual components may be more complex, the actual production efficiency is higher and the efficiency suitable for application scenarios is more perfect.
The impact of mechanical protection on motors
The protection structures of various types of protection are closely related to the ventilation and heat dissipation problems of motors, especially for large-sized and high-capacity motors. The larger the capacity, the more serious the heat dissipation and cooling problems, and it is necessary to carefully choose the ventilation system and mechanical protection structure.
