Low rpm planetary geared electric motor How does it work?

Low rpm planetary geared electric motor is a common electric drive device, its working principle is to use electrical energy to convert DC power into mechanical energy, through planetary gear transmission to achieve deceleration function. The working principle of Low rpm planetary geared electric motor is described in detail below.

Low rpm planetary geared electric motor is composed of a motor part and a gear drive part. The motor part is mainly composed of armature, permanent magnet, brush, etc., through the magnetic force between armature and permanent magnet to realize the rotation of the motor. The gear transmission part is composed of a planetary gear mechanism, including a sun wheel, a planetary wheel, an inner gear ring, etc., which converts the high-speed rotation of the motor into the deceleration movement of the output shaft through the transmission of the planetary gear.

When the motor is energized, the current in the armature passes through the armature coil, producing a certain magnetic induction intensity. The magnetic field generated by the permanent magnet interacts with the magnetic field generated by the armature coil, creating a torque that causes the motor to rotate. After the motor rotates, it drives the sun wheel to rotate, and the planet wheel on the sun wheel is connected by the planet gear, and the planet wheel meshes with the sun wheel gear.

The planetary wheel is simultaneously meshed with the inner gear ring, which is located around the planetary wheel. The inner gear ring is fixed to the shell, and the fixing of the inner gear ring makes it a stable support platform, making the planetary gear mechanism more firm. When the motor rotates the sun wheel, the index hole of the planet wheel and the planet needle shaft cooperate with each other, making the planet wheel become a special gear, and the planet teeth on the planet wheel mesh with the sun wheel and the inner gear ring, forming a planetary gear drive.

The rotation of the sun wheel makes the planet wheel rotate passively. Due to the coordination of the planet wheel and the planet needle axis, the rotation speed of the planet wheel is slower than that of the Sun wheel, resulting in a deceleration. The fixed inner gear ring makes the planetary wheel unable to rotate around the inner gear ring, and can only be used as a stable fulcrum, making the planetary wheel form a motion track around the inner gear ring. Therefore, when the motor rotates for one week, the planetary wheel on the inner gear ring will move for one week, forming a certain deceleration ratio.

The reduction ratio of the planetary gear reducer motor is determined by the proportional relationship between the planetary wheel, the sun wheel and the number of teeth of the inner gear ring. According to the tooth ratio between the planetary wheel and the sun wheel and the planetary wheel and the inner gear ring, the deceleration ratio can be calculated. Due to the special design of planetary gear mechanism, planetary gear reduction motor has high transmission efficiency and large output torque.

In summary, the working principle of Low rpm planetary geared electric motor is to use electric energy to transform the DC power source into mechanical energy, the motor part generates torque to make the sun wheel rotate, decelerate through the planetary gear mechanism, and the final output shaft to achieve deceleration motion. The working principle of this decelerating mechanism is simple and reliable, with larger output torque and higher transmission efficiency, and it is widely used in various industrial automation equipment and mechanical equipment.