Automatic calibration device for conveyor belt integrating scales

“AUTOMATIC CALIBRATION DEVICE FOR CONVEYOR BELT INTEGRATING SCALES”, wherein the automatic calibration device for integrating conveyor belt scales (100), comprising a weigh bridge, actuator, standard weights, is incorporated to an integrating conveyor belt scale (150), wherein a transfer mechanism moves standard weights (11) and (12) from rest berths (16), (17), (18) and (19) provided on beams (1), (2) to berths (30), (31), (32), (33) of the weigh bridge (41) of the integrating scale (100) upon an expansion movement of the actuator (14) connected by joints to the lever arms (5) and (6), respectively connected to the shafts (4) and (3) in complementary and opposite angles;

• the action of the cylinder plunger (14) causes movement of the lever arm (5) connected to the shaft (4), with the exercised force reaction being transmitted through the cylinder body to the symmetric and opposite lever (6), connected to the shaft (3);
• the movement of the lever causes rotation of the shafts (3) and (4) in opposite directions;
• shafts (3) and (4) are cooperatively connected by the arms (22), (23) and (24), (25) bound by the joints (7), (8), (9), (10), respectively, to the beams (1) and (2);
• bearings (26), (27), (28), (29), respectively at the ends of the shafts (3) and (4), connect the assembly to the housing (13) of the integrating conveyor belt scale (150) which, in turn, is fixed by the connection parts (15), (38), (39) and (40) to the conveyor structure connected to the ground;
• standard weights (11) and (12), respectively, include rods (34), (35), (36), (37), which are initially supported onto the resting berths (16), (17) and (18), (19) connected to the beams (1) and (2), when not in calibration.