Analysis of the characteristics of the aerospace component rotation system


Dynamic Load of Gear Pairs The motion differential equation of the system studied in this paper is a parametric differential equation that is difficult to solve using the general method. To this end, the Fourier series method is used for solving. The specific method can be found in the literature [4].
According to the above formula, the maximum dynamic load of the gear pair at each speed is obtained, and the ratio of the maximum dynamic load to the static load is defined as the dynamic load coefficient at the speed.
Effect of meshing damping on the vibration of the gear system Due to the presence of lubricant between the tooth gaps of the meshing teeth, there is damping between the meshing tooth faces. Since the input stage gear is at the high speed stage, it is more important to study the dynamic characteristics of the input stage gear. Therefore, this paper mainly studies the dynamic characteristics of the gear teeth and the web of the spoke gear 2. And shown are the relationship between the calculated dynamic load coefficient and the gear rotation speed of the gear teeth and the spokes of the gear 2 when the meshing damping coefficient C12 is different. It can be seen from the figure that the maximum resonance point of the gear teeth and the web occurs at an intermediate frequency (3800r/min). In addition, as the damping coefficient increases, its dynamic load factor decreases significantly. This shows that if the lubrication method of fully injecting lubricating oil is used between the tooth surfaces to increase the meshing damping coefficient C12, the gear teeth and the web can be reduced. Dynamic load.
And the difference between the calculated dynamic load coefficient and the gear speed of the gear 2 teeth and the spokes when the error er is different. It can be seen from the figure that the effective reduction of the tooth profile error can quickly reduce the peak load of the gear teeth and the web, which is beneficial to reduce the fluctuation of the output torque and improve the smoothness of the transmission.
Conclusions (1) According to the research in this paper, the meshing damping of the teeth has a significant influence on the dynamics of the gear teeth and the spokes. If appropriate lubricant and lubrication are used to increase the meshing damping, the effect on the wheel can be significantly reduced. The peak value of the dynamic load on the teeth and the web. (2) The effective reduction of gear error can quickly reduce the dynamic load peak caused by torsional vibration on the gear teeth and the web, which is beneficial to reduce the vibration of the gear coefficient, and is an important way to reduce the dynamic load of the gear system.

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