| 摘要 |
PURPOSE:To obtain the titled measuring apparatus which is inexpensive itself, low in installation cost, can be arranged in the small space of a vehicle, is stable in the measured value of a loading wt. prior to and posterior to running and has high reliability, by mounting a detector for detecting the strain generated in an axle, a loading wt. operation part, an automatic zero point adjusting part, a display part for displaying a count value and a loading/running change-over means for selectively and alternately supplying the output of a comparator to the loading wt. operation part and the automatic zero point adjusting part. CONSTITUTION:A detector 1 is provided to the side surface of a defferntial gear case for supporting the drive shaft of a vehicle by adhering the strain gauge part thereof to the side surface of said case with a mechanically strong adhesive. Thie strain gauge constitutes a Wheatstone bridge circuit and detects the strain amount generated in the drive shaft by cargo load as the change amount of electric resistance and a loading wt. is calculated on the basis of said change amount. The output of the detector 1 is inputted to one input terminal H1 of a comparator 13 while amplified by an amplifier 11. Because there is no input to the other input terminal H2 of the comparator 13 at first, a signal for performing the up-count of an up-down counter is supplied to the input terminal S1 of a loading wt. operation part 14 from the output terminal H3 of said comparator 13. |
