Compared with cylindrical gear reducer transmission, gear reducer transmission has many unique advantages.Its most notable feature is that it can perform power splitting when transmitting power; at the same time, its input shaft and output shaft are coaxial, that is, the output shaft and input shaft are set on the same main axis.Therefore, gear reducer transmission has been used by people to replace ordinary gear transmission, and as a speed increaser and speed change device in various mechanical transmission systems.
The main characteristics of gear reducer transmission are as follows.
1. Smooth movement, strong shock and vibration resistance. Several wheels with the same structure are evenly distributed around the center wheel, so that the forces of the wheels and the rotating arm can be balanced with each other.At the same time, the coaxial reducer also increases the number of teeth participating in the meshing, so the movement of the gear transmission is stable, the ability to resist shock and vibration is strong, and the work is more reliable.
2. The transmission ratio is relatively large, which can realize the synthesis and decomposition of motion. As long as the type of gear transmission and the gear matching scheme are properly selected, a large transmission ratio can be obtained with a few gears.In the gear reducer transmission that is only used as a transmission motion, its transmission ratio can reach several thousand.It should be pointed out that when the gear transmission ratio is large, it can still maintain many advantages such as compact structure, small mass, and small volume.Moreover, it can also realize the synthesis and decomposition of motion and complex motion with various speed changes.
3. The gear reducer is small in size, small in mass, compact in structure, and large in carrying capacity. Because the gear transmission has power splitting and the coaxial transmission of each center wheel and the rational application of internal meshing gear pairs, it can make its structure very compact.Furthermore, since several wheels are evenly distributed around the center wheel to share the load, each gear bears a smaller load and allows these gears to adopt a smaller modulus.In addition, the structure of the coaxial reducer makes full use of the large bearing capacity of the internal meshing and the accommodated volume of the ring gear itself, which is conducive to reducing its outer dimension, making it small in size, small in quality, very compact in structure, and high in load-carrying capacity. big.- Generally, the outer dimension and quality of gear transmission are about 1/2 ~ 1/5 of that of ordinary gear transmission (that is, under the same load conditions).
4. The transmission efficiency of the gear reducer is high due to the symmetry of the gear transmission structure, that is, it has several uniformly distributed wheels, so that the reaction forces acting on the center wheel and the arm bearing can balance each other, so that
It is beneficial to achieve the effect of improving transmission efficiency.In the case of proper selection of transmission type and reasonable structure layout, the efficiency value can reach 0.97~0.99.
