FIELD: machine building.
SUBSTANCE: device to monitor technical state of a rotation speed variator of a threshing drum of a reaping thresher comprises a pole, a screw clamp, a rotation unit, an adjustable rod, a supporting bracket and a signal measuring and analysing unit. A helium-neon source of a laser beam and a metal mirror are set on the supporting bracket. The latter is mounted so that the variator disk lies in the laser beam plane. The signal measuring and analysing unit comprises a photoreceiver to register the luminous flux of the laser beam from its source.
EFFECT: lower labour content in diagnostic operations.
2 dwg
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