| 摘要 |
<p>[PROBLEMS] To reduce the cost and the size of a device for adding/removing the load of an incorporated weight for the load measuring mechanism of a weighting apparatus by enhancing the reliability in operation of the device while simplifying the mechanism. [MEANS FOR SOLVING PROBLEMS] An incorporated weight (5) is latched to a weight holder (4) elevating/lowering for a fixed section (3) wherein the weight holder (4) is normally located at an elevated position by repulsion force of a coil spring (7) and the load of the incorporated weight (5) is not applied to the load receiver (10) side. At the time of calibration, air is supplied from anair supply/discharge section (2) to an air bag (9) and since the volume increases, the weight holder (4) lowers while resisting against repulsion force of the coil spring (7) and latches the incorporated weight (5) to the load receiver thus performing calibration. Upon finishing calibration, a solenoid valve (12) is opened to discharge the air in the air bag (9). Consequently, the weight holder (4) is elevated by repulsion force of the coil spring (7) and the weighting apparatus enters the normal weighting mode.</p> |
