DYNAMIC SCALE FOR BULK MATERIAL
First Claim
1. Dynamic scale for bulk material having two swivel arms (2), which can be moved individually or in unison, two hydraulic cylinders (3) and at least one load holding arm (8) per swivel arm (2),characterised in thatmeans are available in each swivel arm (2) to measure the shear stress in said swivel arm,each independently movable swivel arm (2) carries an acceleration sensor (6), with which the determination of mass can be corrected by the current acceleration value.
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Accused Products
Abstract
The invention relates to a dynamic scale for bulk material, having two swivel arms (2) and two load-lifting arms (8) mounted to the free end of said swivel arms, with one hole (7) being located in each of the swivel arms (2) and positioned transversely to the extension of the swivel arm and also transversely to the neutral fiber brought about by the flexural load. A pipe (9) is fitted into the hole (7) and is welded thereto. The pipe (9) comprises two sensors (14, 15) transversely to the longitudinal axis thereof, said sensors being located at an angle of substantially 90° to each other and each being disposed at an angle of ±45° to the direction of the shear stress component τxy. Under the influence of the shear stress, the cross section of the tube (9) is deformed into an ellipse that is inclined at about 45°, the shorter and longer axis (11, 13) thereof being measured using the sensors (14, 15). Said sensors (14, 15) each comprise two force inlets (16, 17), which are inserted with pretension in suitable recesses in the tube (9).
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Citations
10 Claims
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1. Dynamic scale for bulk material having two swivel arms (2), which can be moved individually or in unison, two hydraulic cylinders (3) and at least one load holding arm (8) per swivel arm (2),
characterised in that means are available in each swivel arm (2) to measure the shear stress in said swivel arm, each independently movable swivel arm (2) carries an acceleration sensor (6), with which the determination of mass can be corrected by the current acceleration value.
Specification