FIELD: measurement equipment.
SUBSTANCE: device includes measuring unit (1), the signal from which is supplied to weight measuring unit (2), then, it is supplied to the input of key (3) and the first comparison unit (4). The signal is supplied from the first comparison unit (4) to the input of key (3), from the output of key (3) to the input of the second comparison unit (5), from the output of which it is supplied to inputs of control unit (6) of an asynchronous motor and indication unit (7), from the output of surge value setting unit (8) to the input of the second comparison unit (5), from the output of maximum weight setting unit (9) of the load being lifted to the input of the first comparison unit (4).
EFFECT: detection of mechanism overload at the limit; prevention of accidents related to overload.
2 dwg
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