Patent UA-101906-C2 (UA)
Title: Combined spindle bearing on permanent magnets
Inventor: HRYTSENKO VOLODYMYR ILLICH
IPC: F16C32/04
Filed: 2012-02-20
Abstract: A device relates to machine-building and can be used at construction of aviation motors. This is achieved by the fact that in combined spindle bearing on permanent magnets that includes power magnetic suspensions, sensors of gap values, balancing loads, roller bearings, block of selection of unbiased position and shaft of combined spindle bearing on permanent magnets balancing, according to the invention, the shaft of the combined spindle bearing on permanent magnets is made component of three installed coaxially shafts with same diameters, on the middle shaft and its ends in the screens shaft magnets are installed as short hollow cylinders with poles at the outer and the inner side surfaces, in those cross sections in the body of combined spindle bearing groups of power magnetic pushers are installed, as three connected in parallel power magnetic pushers in each group, each power magnetic pusher includes a magnet of power magnetic pusher installed to the screen, with the open pole it is turned to the same pole of the magnet of the shaft, control screw, and between the control screw and the magnet of the power magnetic pusher, in insulator, a piezoelectric motor is installed. The power magnetic pushers that are installed in the combined spindle bearing and the magnets of the shaft in those cross sections form two power magnetic suspensions of the component shaft of the combined spindle bearing on permanent magnets. In the other cross sections of the spindle bearing sensors of values of gaps between the bases of the sensors and the end shafts of the component shaft of the combined spindle bearing are installed. The end shafts of the component shaft are installed to roller bearings that are installed in the flanges attached to the body of the spindle bearing. Between the sensors of the values of gaps and the roller bearing in the end shafts of the component shaft of combined spindle bearing balancing loads are installed. Block for selection of unbiased position and balancing of the combined spindle bearing on permanent magnets includes sensors of gap values, gap value measuring units, angle of turn of the component shaft of the combined spindle bearing measuring unit, calculator, operational amplifiers, switches “more-off-less”, switches “on-off” of the group of power magnetic pushers. Sensors of gap values are electrically connected to the groups of power magnetic pushers and are connected to inputs of gap value measuring devices, and the outputs of those are connected to the inputs of the calculator, output of the shaft turn angle measuring device is connected to the input of calculator, outputs of calculator are connected to the inputs of pairs of operational amplifiers, and the outputs of those through the switches “direct-off-reverse” are connected to the inputs of respective differential amplifiers outputs of which through the switches “on-off” are connected to respective groups of power magnetic pushers. Unloading of the roller bearing of the combined bearing and energy saving are achieved.