SU34775A1 - Automatic scales for loose bodies - Google Patents

Description

In the proposed automatic scales for loose bodies consisting of a swinging system of two buckets, the rocker arm with buckets suspended to it is equipped with an arcuate plate, which, when the bucket tilts to fill it loose, interacts through a system of levers with curved plates placed at the sides of the slot of the hopper hopper with the purpose of periodic burial in portions of the bulk. When overturning, the shots of the rocker arm are softened by means of a lever pivotal on the balance of the scale, one arm of which with a fork-shaped branch perceives the force of impact, and the other, by means of springs adjustable by a screw, serves as a braking device.

In FIG. 1 is a front view of an automatic balance for bulk solids; FIG. 2 is the same side; FIG. 3 - the same, from above; FIG. 4-side view of the balance beam; FIG. 5 is the same in front; FIG. b, 7, and 8 different positions of the plates near the slot of the funnel of the hopper of FIG. 9-front view of the box near the gap; FIG. 10 is a side view of it; FIG. It is a view of her from behind.

The balance arm 1 of the balance is made of two identical levers (Fig. 4, 5), rigidly interconnected by a roller 2, on which necks 77 are rotating

(501)

a rocker, and a link 3 and an arm 4. In the arms there are holes 5 for mounting axles on which buckets are suspended. In order to avoid the movement of the buckets along its axis, retention strips 6 are installed.

Link 4 serves simultaneously to stop the rocker in a certain position and load; Link 3 serves to further set in motion a buffer that eliminates the impact of the rocker arm during transfer. On one of the arms of the rocker arm there is a rigidly connected with it arcuate plate 7, which interacts with the device, stopping the filling of material in the ladles by weighing the required portion.

The yoke bears on itself two buckets (Fig. 1-3), freely suspended in the holes 5 of the rocker arms on the trunnion 8, equipped with knives. The bucket has two openings — a loading 9 and an unloading 10. The discharge opening 10 in the position of the bucket standing in bulk, is closed by a cover 7 /, which, due to its weight, covers it.

The cover 77 using the plates 72 is freely suspended on the axis 75 mounted in the ears 14, fitted into the front wall of the bucket.

When the bucket overturns, the lid, under the influence of its own weight, rotates on axis 13 and thereby opens the discharge opening.

 Buckets are equipped with pins / 5 to set buckets to a certain position during unloading.

Roller 2 of the yoke is installed necks 17 ball bearings 16 or, instead of bearings and necks, on the rollers can be made prisms (knives) mounted on the support pads. Bearings (or pillows

for knives) installed in the frame 18 weights.

The bed of the scale has two cross links 19, one on each side. In each connection 19, an adjusting screw 20 is provided, equipped with a head for shifting the cushion (support) 21 to hold the arm 4 arm and keep the arm in a certain position. Screws 2i make it possible to manually adjust the weighing bracket to reduce or increase the angle of rotation of the rocker arm. On the frame of the balance, on each side there is a device for mitigating the impact of the shoulder 4 of the rocker arms on the support 27 of the frame when tilting and. The device consists of a lever 22, having the ability to swing together with a roller in the supports 24-25 within the limits of the fingers 26. The lever 22 is equipped on one shoulder with a fork-shaped fork, designed to perceive the impact of the rocker arm using the ends 3, and on the other shoulder plate 25 with circular cut. When swinging, the lever slides the plate 25 between two springs 27, for adjusting the compression by means of a screw 2P with right and left threads, mounted in the support 28 without the possibility of axial movement. When the screw is rotated, the nuts 29a, with which the springs 27 are rigidly connected, can be moved or moved apart and, thus, screwing the head of the screw 29 can always achieve the required braking force of the plate 25 of the lever 22, and at the same time see the blows of the rocker arm.

For periodic burial in bulk buckets and for stopping the supply of material to the bucket by weighing, the hopper funnel 39 is fitted with curved plates 52 placed laterally

slit in box 30 (fig. 9-11). From the sides of the box, two flaps 57 are lowered, preventing the material from spilling out from the sides. Each plate 52 is rigidly connected to an axis 55 (Fig. 6-8), which is freely passed through the corresponding holes of the plates 31 (Fig. 10). At the other ends of each of the axes of the plates 52, the lever 55 is fixed with a counterweight 56, whereby the plates always occupy the position shown in FIG. 7, when material is fed to the bucket. In addition, each plate 52 is equipped with a lever 34. On one side of the flaps 31, a rotary axis Zba is installed, which carries from one end a rigidly connected bar 57 with a fork and a weight 57a at the end, and at the other end - lever 38, also with a small fork at the end. The lever 55 serves to transfer to the plates 52 and in turn may cause the plates 52 to close.

At the moment of filling the material, the position of the buckets is shown in FIG. 1. The hopper funnel is open and the material flows through the upper open feed opening 9 into the bucket. After the proper amount of material is poured into the bucket, and the right torque is equal to the left torque, the rocker arm moves quickly with the left bucket j anpaBO and the second bucket rises from the first bucket, and the material is poured out of the first bucket when lowering the left-hand bucket, he presses 75 with his fingers on the rocker and takes the position shown in the drawing where the cover 77 moves away from the discharge opening and the material is poured out.

When filling material into the bucket, the cover 77 cannot move away from the discharge opening 10, since the weight of the cover is sufficient to overcome the material pressure on the cover from bottom to top when the bucket is fully loaded.

At the beginning of the movement (after weighing), the arcuate plate 7 of the rocker strikes the fork of the bar 57, the latter rotates the ZBA axis, which with the lever 38 pushes the lever 34 of one of the plates 52, whereby the latter rotates around the axis and with its bent end closes the slit (Fig. 6 ) than the noflanajiia of the material in the bucket ceases instantly. After the crust has moved to another side and the second bucket has come up to the field for filling, the fork 57 slit from the arc-shaped plates 7 and, thanks to the load 37a, takes the initial position, therefore, the lever 38 no longer acts on the lever The 34 plates 32 and the plate, thanks to the lever J5, with the load 36 again return to their original position, i.e. the rash of the material opens and the latter is fed to another bucket (Fig. 7). Upon subsequent movement of the rocker arm from right to left, the funnel slot closes with the second plate 32 (Fig. 8), etc.

If there were no adaptation for softening, then shoulder 4 would be hit against support 27 when moving the rocker arms. When the buckets are in position to fill, the lever 22. has no connection with the rocker. After the weighing took place, and the yoke set in motion and the material supply stopped, only then the lever 22 enters into operation.

The ends of the link 3 of the rocker arms touch the fork of the lever 22 and already further force the lever, which at the other end of the plate 23 is clamped between two springs 27, to move with the rocker, resulting in braking of the course and the rocker gently sits its shoulder 4 on the support 27, and as the springs compress the plate

In a direction parallel to the axis of rotation of the lever, the lever has no influence on the weighing.

In order for both sides of the balance beam’s balance to work equally, it is possible to move it, 27 which adjusts the angle of inclination of the balance arm, either from two sides, or from one, as needed.

The subject matter of the invention.

1. Automatic scales for loose bodies, consisting of an oscillating system of two buckets alternately filled with loose, characterized in that for periodically filling portions of granular into the buckets, the hopper of the weighing bin is equipped with two plates placed from the sides of the funnel's fold, bent with 1 plates 52 fitted with counterweights 36 and levers 34 interacting when the bucket system overturns the bucket system with the lever 38 of a rotary-reinforced bar 57, tilted to one side or the other by an arcuate plate 7, fixed on the end of the rocker arm 7 weights. -2. In the weights according to claim 1, use a device to soften the impact of the rocker arm when tilting the latter, consisting of a lever 22 pivotally fixed in the frame of the balance arm, equipped with a fork for one arm, designed to perceive the force of the impact of the rocker arm, and on the other braking device, consisting of springs 27, adjustable screw 29. ji fig 7 fig 8 34P, ZGP "L