A series of research work has been carried out on the dynamic modeling analysis and dynamic performance optimization of multi-stage gear transmission box coupling of shearer cutting part, and some research results have been obtained. However, due to the complex structure and working condition of the cutting part, there...
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Innovation of rocker box and multistage gear transmission of shearer cutting part
① Aiming at the problems of modeling difficulty and low computational efficiency of multi-stage gear system dynamics, an efficient general modeling method is proposed. In this method, a unified writing form of linear or nonlinear dynamic models of each component in the gear system is designed, which makes the...

Research on rocker box and multi-stage gear transmission of shearer cutting part
With the continuous increase of mining depth, the geological characteristics of high ground stress and strong mining disturbance in deep coal seam make the operation task of shearer more complex. Shearer cutting part is a multi-stage gear transmission system with cantilever box. Its complex structure and frequent faults seriously...

Influence factors and laws of optimum tooth profile modification parameters of multistage gear transmission system
As shown in Figure 1, it is the contour map of CHTE under different profile modification parameters of gear pair 3, and the minimum value area in the figure represents the best combination of profile modification parameters. Figure 1 (a) shows the CHTE contour of gear pair 3 without...

Structure optimization of rocker arm box of shearer cutting part and 3D topological modification of multi-stage gear
The dynamic performance of shearer cutting part is improved from two aspects of rocker box structure optimization and multi-stage gear three-dimensional topology modification ① In order to improve the low-order natural frequency, the structure of the rocker box is optimized, and the deformation of the rocker box and the...

The influence factors and rules of optimum tooth direction drum repair in multistage gear transmission system
It is well known that the optimum amount of tooth direction modification varies with the meshing tooth direction error and tooth force, but the law of variation is not clear. It is helpful to estimate the change trend and value of the optimum tooth profile modification amount under different...

Coupling dynamic characteristics of multistage gear transmission and rocker box
By means of natural vibration analysis and system dynamics simulation, the coupling dynamic characteristics of multi-stage gear transmission and rocker box are revealed ① The natural vibration characteristics of rocker box and multi-stage gear transmission are calculated respectively. The natural frequency and vibration mode of the rocker box (condensation...

Coupling dynamic characteristics of multi stage gear transmission system under speed up condition
Adjust the synchronous speed of the motor so that the speed of the motor under rated load can be increased from 500 R / min to 1100 R / min within 70 s. In order to eliminate the influence of external excitation on the simulation results, the roller load...

Coupling dynamic characteristics of multistage gear transmission system at fixed speed
Adjust the synchronous speed of the motor to 150, 500, 750, 1250, 1470, 1750 and 2000 R / min respectively under the rated load (1470 occurs instead of 1500 because the cutting motor speed under the rated condition is 1470), and take the load fluctuation coefficient as 0.2. ①...

Dynamic characteristics of multi-stage gear box coupling at different speeds
The dynamic response characteristics of shearer cutting part under rated working condition are analyzed, and the dynamic deformation and dynamic load changes of multi-stage gear transmission before and after coupling rocker box are compared. Under the rated condition, it is not found that the coupling rocker box has obvious...
