Internal gear planetary gear mechanism further promotes obstacles
Sewer Jetting Pumps Sewer Jetting Pumps ZHEJIANG BOTUOLINI MECHANICAL CO.,LTD , http://www.botuopump.com
The internal gear planetary gear mechanism is a combination mechanism consisting of a parallelogram mechanism and a gear transmission, and is a relatively new transmission form. The speed reducer made according to this principle has many advantages such as strong bearing capacity, large transmission ratio, small volume and the like. However, due to the short time of this kind of mechanism, the manufacturing and design theories are not mature. There are a series of problems in vibration, noise, and fever. These problems have become obstacles hindering their further promotion and application. To understand and solve these problems in depth, we must systematically and in-depth study the dynamic behavior of the transmission system. Previous researchers have basically used quasi-static analysis methods or single-degree-of-freedom vibration models. These models are too simple to reflect the dynamic nature of this transmission. In this paper, the multi-degree-of-freedom dynamic equation of the transmission is established from the perspective of elastic dynamics, and the dynamic load of each bearing in the transmission is analyzed based on this. The basic assumption and the elastic deformation coordinate the transmission principle of the internal gear planetary gear mechanism. The power is input from the input shaft, and the connecting rod of the parallelogram mechanism is made into an internal gear. The power is output by the external gear through the meshing of the internal gear and the external gear. In order to overcome the uncertain position of the movement of the parallelogram machine, there are two commonly used methods: one is to use a three-phase mechanism juxtaposition, this type of reducer is called a three-ring reducer; the other is to use gear transmission to overcome the dead point. In order to balance the inertial force of the mechanism, the two-phase parallelogram is mechanically symmetrically arranged, and the reducer using this method is called a double-ring reducer. Either way, since the parallelogram mechanism using more than one phase is used, there is a virtual constraint in the mechanism, and the mechanical model is a static indefinite model. Therefore, to study its dynamic behavior, it is necessary to consider the components or motion pairs in the system. Elastic deformation and establish a coordination relationship between elastic deformation.