multi-stage gear

As shown in Figure 1, it is the contour map of CHTE under different profile modification parameters of gear pair

It is well known that the optimum amount of tooth direction modification varies with the meshing tooth direction error and

Adjust the synchronous speed of the motor so that the speed of the motor under rated load can be increased

Adjust the synchronous speed of the motor to 150, 500, 750, 1250, 1470, 1750 and 2000 R / min respectively

Vibration acceleration is the most direct phenomenon caused by the dynamic load of the system. At the same time, the

Fig. 1 (a) and (c) respectively show the dynamic reaction curve of the front and rear bearing 1 of the

Fig. 1 (a) and (c) show the dynamic meshing force curves of the front and rear gear pair 1 of

Dynamic load is the direct cause of vibration and fatigue failure of transmission system. Analyzing the dynamic load of each

Involute gear has the characteristic that the center distance changes while the transmission ratio remains unchanged, so the center distance

Figure 1 shows the comparison of the center motion track of the driving and driven gears of the front and

When shearer cuts coal, the rocker box will produce complex three-dimensional dynamic deformation under the joint action of internal and

The main research contents are as follows: 1) The natural vibration characteristics of the coupled system are solved and the

Firstly, the natural vibration characteristics of the coupled system are solved. By simplifying the dynamic equation of multi-stage gear transmission

Bearing is a standard part widely used in all kinds of mechanical equipment, and it is the key component to

The cutting motor of shearer is squirrel cage three-phase asynchronous motor. The mechanical characteristics of cutting motor refer to the

The drum bears the function of cutting coal. The load on the drum has an important impact on the stress

Firstly, the finite element model of rocker box is established in ABAQUS, and its mass matrix and stiffness matrix are

An example is given to show the iterative process of the modification parameters. The tooth profile modification in this study

In this study, symmetrical straight line modification is used in the direction of tooth profile, and the modification curve is

The calculation process of the modification parameter calculation method mainly includes four steps: the first step is to obtain the

System dynamics simulation is to obtain the actual meshing state of each gear pair. The coupling dynamic model of the

In the following three steps, the formula of meshing force of single tooth is derived, which takes into account the

Because reducing the fluctuation of static transmission error is generally accepted as the criterion of tooth profile modification, the key

This part analyzes the influence of rocker box structure optimization on gear meshing state of internal transmission system. Stationary random

Structural optimization is the application of optimization algorithm in mechanical design. According to different optimization variables and levels, it can

The motor rotor and the gear shaft 1, the gear shaft 8 and the sun gear of the first stage

Topology optimization is a kind of conceptual design. The optimization results are shown in the figure, which can not be

Three dimensional topological modification is an effective means to improve the transmission quality of gear system, which includes two directions

The generalized displacements of substructure dynamic equations are numbered in local coordinates, and the generalized displacements of each substructure will

Under the influence of the elastic deformation of the supporting system, the axes of the parallel gears are skewed in

According to the different coordination relationship of the interface of each substructure, the connection types between the corresponding nodes can

The cutting part is divided into rocker box, fixed shaft gear, gear shaft, cutting drum, planetary gear train and cutting