Weighing scales – With weigher loading or unloading means
Patent
1997-07-22
1999-02-02
Gibson, Randy W.
Weighing scales
With weigher loading or unloading means
177187, 177DIG9, G01G 1900, G01G 2110
Patent
active
058668551
ABSTRACT:
A general purpose belt scale for measuring the weight of material being transported on a conveyor belt includes a pair of load beams, each having a load cell in combination with a force and torque isolator mechanism that isolates the load cell from disturbance forces and torques that would increase the measurement errors. Absence of a crossbar enables the two independent load beams to fit a wide variety of belt widths. Selection of the capacity of the load cells after the weighing application has been determined completes the general applicability of the belt scale for both belt width and load weighing requirements. An alternative embodiment of a selectable mounting location for the load cell within each load beam allows the weight capacity of the belt scale to be varied without changing the load cell's weight capacity. The hinge axis of each load beam is preferably matched to a plane passing just slightly above the carry roll axle; and provisions for this matching in the field at installation are provided for in the invention. Additionally, a threaded mounting bolt and nut arrangement enables simple height adjustment so that the weigh idler carry roll can be matched with adjacent idler carry rolls at the time of field installation.
REFERENCES:
patent: 4260034 (1981-04-01), Randolph, Jr.
patent: 4557341 (1985-12-01), Solderholm
patent: 5111896 (1992-05-01), Porcari et al.
patent: 5296654 (1994-03-01), Farley et al.
Engineering Services and Systems, Inc.
Gibson Randy W.
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