Contactless transmission device for test values - fitted to concrete mixers with round mixing trough uses inductively coupled coils

摘要

Driving and supporting means for the mixing devices and stirrers are placed centrally above the trough and the device comprises two inductively coupled circular coils which are mounted opposite each other; one of them is stationary and fixed on the central flange, while the other is mounted on the driving shaft gland and rotates with it; the fixed coil is connected to a series of display and control circuits, while the movable coil is connected to measurement sensors through corresponding switches; a part of the coil system is used as a current supply for the rotatable measurement system.