Planetary gear reducer versus normal gear reducer

The planetary gear reducer drive has many unique advantages compared to the cylindrical gear reducer drive. Its most notable feature is that it allows for power shunting when transmitting power.

At the same time, its input and output shafts have coaxiality, i.e. the output and input shafts are set on the same main axis.

Therefore, the planetary gear reducer drive is now used to replace the ordinary gear drive, and as a speed increaser and variable speed device in various mechanical transmission systems. The main features of the planetary gear reducer drive are as follows.

1, smooth movement, strong resistance to shock and vibration

Due to the use of several planetary wheels of the same structure, uniformly distributed around the central wheel, so that the planetary wheel and the rotating arm of the sexual force can balance each other. At the same time, the number of teeth involved in meshing is increased, so the planetary gear transmission is smooth, the resistance to shock and vibration is stronger, and the work is more reliable.

2, the transmission ratio is larger, can achieve the synthesis and decomposition of the movement

As long as the appropriate choice of planetary gear drive type and tooth scheme, you can use a few gears and obtain a large transmission ratio. In the transmission of planetary gear reducer only as a transfer of motion, the transmission ratio can reach several thousand. It should be noted that the planetary gear drive can still maintain many advantages such as compactness, low mass and small size when its transmission ratio is very large. Moreover, it can also realize the synthesis and decomposition of the movement as well as the realization of a variety of variable speed complex movement.

3, planetary gear reducer small volume, small mass, compact structure, large carrying capacity

As the planetary gear drive has a power shunt and each central wheel constitutes a common axis type of transmission and the reasonable application of internal gear vice, so it can make its structure very compact. The uniform distribution of several planetary wheels around the centre wheel for common load sharing results in a smaller load on each gear and allows these gears to be used with smaller module sizes. In addition, the coaxial gearbox makes full use of the large internal meshing capacity and the tolerable volume of the inner ring itself, thus contributing to a reduction in its outer dimensions, making it small in size, small in mass, very compact and with a large carrying capacity. Generally, the planetary gear transmission outline size and quality of about 1/2 to 1/5 of the ordinary gear transmission (i.e. under the same load conditions).

4, planetary gear reducer transmission efficiency is high

Due to the symmetry of the planetary gear transmission structure, that is, it has a number of uniformly distributed planetary wheel, so that the role of the central wheel and the reaction force in the rotating arm bearing can balance each other, thus contributing to the role of improving transmission efficiency. With the right choice of transmission type and reasonable structural arrangement, the efficiency value can reach 0.97~0.99.