The most significant feature of WPWS175,WPWS200,WPWS250,WPWDS40,WPWDS50planetary gear reducers compared to cylindrical gear reducers is that they can split power when transmitting power; Moreover, its input shaft is coaxial with the output shaft. As a result, planetary gear reducers have been widely used as speeders and transmission devices in various mechanical transmission systems, replacing ordinary gear reducers.
The main characteristics of planetary gear reducers are: smooth operation, strong resistance to impact and vibration. Due to the simultaneous use of multiple planetary gears with the same structure, which are evenly distributed around the central wheel, the forces between the planetary gears and the rotating arm are balanced. The coaxial reducer also increases the number of teeth involved in meshing, so it can make the motion of the star gear transmission stable, with strong resistance to impact and vibration, and more reliable operation. The transmission ratio is relatively large, making it easy to achieve the synthesis and decomposition of motion. As long as the appropriate type and gear matching scheme are selected, a few gears can be used to obtain a larger transmission ratio. When the planetary gear reducer is only used as a transmission device, the transmission ratio can reach several thousand. Especially, it should be pointed out that planetary gear reducers can still maintain many advantages such as compact structure, light weight, and small volume when the transmission is relatively large. Moreover, it can also achieve the synthesis and decomposition of motion, even including various complex variable speed movements. Small in size, light in weight, compact in structure, and strong in load-bearing capacity, planetary gear transmission has the function of power diversion, and all central wheels together form a coaxial transmission. At the same time, internal meshing gear pairs are reasonably applied, making its structure compact. Moreover, due to the uniform distribution of several planetary gears around the central wheel, they share the load together. This minimizes the load borne by each gear and also allows these gears to adopt smaller modules. The coaxial reducer fully utilizes the characteristics of large internal meshing bearing capacity and large capacity of the internal gear ring itself, which is conducive to reducing its outer size, making its volume as small as possible, weight as light as possible, structure as compact as possible, and bearing capacity as large. Usually, the outer dimensions and mass of planetary gear transmission are only 1/2-1/5 of that of ordinary gear transmission (i.e. under the same load conditions). High transmission efficiency. Due to the structural symmetry of the planetary gear reducer, that is, it has several evenly distributed planetary gears, so that the reaction forces acting on the center wheel and the arm bearing can achieve mutual balance, so as to improve the transmission efficiency. Under the premise of appropriate transmission type and reasonable structural layout, its efficiency value can reach 0.97~0.99.
