SU37875A1 - Automatic Scales - Google Patents

Description

In the proposed automatic scales using two weighing units with alternately filled bulk buckets, the control of the gate to switch the current of the bulk into one or another bucket and to keep the outlet valves of the buckets in the closed position by means of electric motors, to enable which on the swing axes of the rocker arms a pair of ring contacts enclosed between the contact rollers.

In FIG. 1 shows a side view of the automatic scale; FIG. , 2, view nx from above; FIG. 3-view of slip rings on the side; FIG. 4 is the same in front.

The scale consists of two weighing units with a common feed hopper 1, the valve 15 is mounted on the vertical axis, the bulk body, which is to be weighed, is poured alternately into one or the other guide chute 2 B 2a, along which it falls into Kovpsh 3 and Za, rests; Ees through prisms each on its own yoke: 3-bucket 3-yoke, 4, and Za-on yoke 4a. Each beam 4 and 4a is supported by prisms 11, Pa on the main frame 5 weights and 1 represents rigidly connected bottom of the lever, on the smaller arm of which

(30.5)

a bucket is installed, and a larger load. The load, similarly to the bucket, is suspended from the rocker on prisms, but, in addition, due to the special sled and worm, it can move along the rocker arm, thus allowing accurate adjustment of the weights.

Each bucket 3 Over has an outlet flap 14 fixed on the hinge axis and locked at its opposite end by a pivot rod 6, the bent end of which prevents the flap opening until the rod 6 itself is rotated 180 ° by its axis pyr . The curved end of the scher / kn 6 due to the special stop prevents only the opening of the valve, i.e., its downward movement; when the valve moves backward, i.e., when closing it, the curved end of the rod 6 does not offer any resistance, turning on its hinge axis and lying down along the body of the rod 6 and skipping the edge of the valve, which assumes its original position. The shutter is closed either by a coil spring mounted on the hinge axis of the bottom of the bucket or by means of counterweights 7 or 7a.

The flap 15 of the hopper 1, as well as the rod 6, is turned by turning on the respective electric motors 8 and 9. The turn-on is achieved by closing the corresponding contacts placed on the ring 10 (Fig. 3 and 4) mounted on the support frame of the scale in the location of the reference prisms 11 and Pa rocker; the closure comes from the moment the contacts overlap with the rollers 12 and 12a, rolling along the inside of the surface ring 10 and fastened to the finger contacts 13 and 13a, rigidly connected with prisms 11 and Pa and turning the balance arms from the horizontal position as the rocker arms come out.

Bulk flowing into one of the scales' buckets fills it and unbalances it after exceeding the weight of the load installed at the other end of the rocker arm. The unbalanced box immediately turns on the electric motor 9, which opens the bucket gate 14, so that the latter is emptied at once and returns to the equilibrium position; if the other bucket is empty, turning on the shutter-opening device produces no effect. Simultaneously with the inclusion of the said opening gate of one of the buckets of the electromagnet 9, another motor 8 is also turned on, turning the outlet gate of the feed hopper, due to which the flow of the loose into the unbalanced bucket is stopped and transferred to the other bucket. Filled and unbalanced, the bucket puts pressure on the balance arm and rotates it through a certain angle, according to the amount of loose material, after which the lowering of the bucket will stop and the balance arm will stop. A counter mounted between the central prisms on the axis of rotation of the rocker arms and having its own axis rigidly associated with the lyrism turns out to be rotated with each suspension at an angle, according to the weight of the total loose quantity entering the bucket. In the meantime, the other bucket of the balance will be out of balance and immediately, like the first one, as described above, will simultaneously turn on the electric motors of one for opening the damper of the previously loaded bucket and the other for turning the hopper flap.

Each of the aforementioned electric motors, being included in the circuit, continues to operate until the mechanism is turned to “failure,” after which a separate automatic activation of each electric motor occurs.

The subject matter of the invention.

Claims (2)

1. Automatic scales using two weighing units with alternately filled bulk buckets, differing in application, for the purpose of emptying these buckets, rotatable and bent at the end of the rod 6, designed to hold the exhaust valve 14 in the closed position and controlled by the electric motor 9, for switching on and off of which, a pair of ring contacts 13 and 10 mounted on the swing axis of the rocker arm with contact rollers 12 n 12a enclosed between them are applied. 2. In the scales of claim 1, use the flap 15 rotating on the vertical axis for switching current flowing into a particular bucket and controlled by an electric motor 8 switched on and off by ring contacts 13 and 10. Fip1 kg: . Fip Fig5Fig4 . ,, II 12a