DEVICE FOR MEASURING BRUSH PRESSURE ON ELECTRICAL MACHINE COLLECTOR Russian patent published in 2018 - IPC G01L1/12 

FIELD: measuring equipment.

SUBSTANCE: device comprises a brush holder with a tooth support, a moving part, a brush, two ring-type magnetic circuits with windings of instrumentation excitation located in a body of a force sensor, rigidly connected with the brush and mounted in the brush holder of the machine until bumping into the collector. One ring-type magnetic circuit through a metal ball and a protective spring is connected to the moving part of the device interacting with the tooth support. In addition, a ring guide and two metal balls are introducted in the device, which are mounted along the action line of the tooth support and are connected to both ring-type magnetic circuits arranged in parallel one inside the other, their excitation windings and the instrumentation are connected back-to-back to the opposite arms of the measuring circuit bridge, and the protective spring is made flat.

EFFECT: increased sensitivity and accuracy of measurements, reduced size of the device.

1 dwg