Dynamic simulation analysis of a ratchet pawl clutch for a certain type of aviation

Abstract

The ratchet pawl clutch is an important component of aero-engine dual speed transmission device, the safe and stable operation of ratchet pawl mechanism relate directly to the clutch can implement the conversion process of engagement and work reliably, so that to guarantee air safety. The dynamic characteristic parameters of the ratchet pawl structure are obtained via the calculation in different operating conditions, then the corresponding parameters are leaded in the ADAMS multi-body dynamics simulation software to simulate in this paper. The validity and reliability are verified via comparing the simulation results with the experimental data. On the basis of this model, meshing speed variance curve under each pretension torque of clutch flat vortex coil spring, and the ideal working conditions are obtained. The special working conditions of manufacture and assembling error of ratchet pawl clutch can be implemented via changing model parameters, and the effects of manufacture parameters of clutch to meshing speed are deeply discussed. The influence factors and reasons are analyzed from the aspect of mechanics theory. Meanwhile, the varying behaviors of meshing speed and condition are studied based on assembling error condition of clutch. The effective control range of clutch assembly error is obtained. Through the study of this paper, it is expected to provide the theoretical basis and technical support for the structural design and maintenance of this clutch.