Indirect suspended load weighing apparatus

Details Indirect suspended load weighing apparatus Indirect suspended load weighing apparatus

1998-08-13

2000-06-06

Gibson, Randy W.

Weighing scales

Structural installation

Vehicle

177147, 702 44, 702174, 702175, G01G 1908, G01G 1914, G01G 1922

Patent

active

060721278

ABSTRACT:
An indirect suspended load weight measuring system that is suitable for use with an excavator that has a moving load bucket rotating about a swing axis. The load bucket has a load therein, and the excavator has a swing drive motor for rotating the bucket, and a hoist rope for supporting the load bucket. The system comprises a torque determination circuit for determining a torque of the swing drive motor and for outputing a motor torque signal having a parameter representative of an instantaneous motor torque. A radius sensing circuit senses a radius of the load bucket with respect to the swing axis and provides a radius signal. A speed sensing circuit determines an angular speed of the load bucket with respect to the swing axis and provides an angular speed signal. A computation circuit responsive to the instantaneous torque signal, the radius signal and the angular speed signal, computes a weight of the moving load.

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patent: 5345042 (1994-09-01), Jamieson
GE Drive Motors and Generators, SPM-8000 Product Literature, Apr. 1987.
General Electric Company, DIGMATE.RTM. Plus Product Literature.

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