The calculation of skews in planetary transmissions and their influence on the system dynamics

The construction of mathematical models of the planetary gearbox was considered. The presented models allow to analyze the stress-strain state of individual components and, paying attention to the obtained deformations, to calculate the dynamic characteristics of the gearbox taking into account the static load. It was found that the asymmetry of the satellite nodes leads to distortions in the gear meshing. The influence of the available distortions in the meshes on vibroacoustic characteristics was investigated. The design solution to compensate the existing asymmetries and to eliminate the distortions in the meshes was proposed

The results of calculated and experimental determination of the frequency response of a mechanical system with gaps

For the first time, an explanation of the practical differences between the results of the calculated and experimental determination of the frequency response of a mechanical system with gaps is proposed in this paper

The automation of portal crane rope run-down calculations

The aim of this paper is to develop a software which allows to determine the run-down of the rope in boom systems of portal cranes instead of the existing graph analytic methods in order to profile the crane trunk to ensure the movement of the cargo only along the horizontal path when the boom system departure changes. The universal analytical dependencies to determine the rope run-down were obtained, lines of equal run-down of the rope for hinged boom systems were stated. Due to the results of the calculations which were carried out with the help of the developed software, it became possible to obtain nomograms that allow designers to determine the necessary parameters of the boom system taking into account the rope run-down

The procedure for accounting and compensation of errors of planetary gear manufacture and assembly

The application of algorithm of solution of incorrectly specified problem is considered to correct the geometry of satellite pinions axes according to the results of indirect measurements. Based on the results of the excessive number of measurements and due to the presence of measurement errors, the probable geometry of the reduction gear box axes location and the necessary corrections are calculated using the least squares method

Application of optical heterodyning methods in microwave transducers

An optical signal mixes up with the reference radiation of heterodyne on a sensitive photodetector site. A beat signal with wavelength separation frequency of heterodyne and information light signal is generated at the output of the photodetector. This beat frequency emittedby the detector must be in radio wave range; this means that the received signal can be processed electronically