SU1595779A1 - Load-engaging device - Google Patents

Abstract

The invention relates to lifting devices for loading stone blocks in quarries. The purpose of the invention is to increase the efficiency of the device by increasing its reliability. This is achieved by the fact that the hinged connection of the end of the lifting jaws is made at its extended end on the side of the concave surface of the jaw and the hinged connection of the load gripping jaw with the top of the control lever, the short arm of which is directed from the cargo cavity of the device, and the long arm is directed towards the anchor to close the jaws and has a counterweight, is made on the extended end of the jaw with its convex surface, and the bearing arm has a support ledge and the second counterweight. 3 il.

Description

I

(21) 4611436 / 31-11

(22) 11/04/88

(46) 09/30/90. Bul Number 36

(7) Kirov Polytechnic

institute

(72) V.S.Bersenev

(53) 62.86.061 (088.8)

(56) USSR Copyright Certificate No. 948831, cl. In 66 C 1/28, 1978.

(54) TRUCK DEVICE

(57) The invention relates to load handling devices for loading stone blocks in quarries. The purpose of the invention is to demonstrate the efficiency of the device by increasing

its reliability. This is achieved by the fact that the hinged connection of the end of the gripping jaws is made at its extended end on the side of the concave surface of the jaw and the hinged connection of the load gripping jaw with the top of the control lever, the short arm of which is directed from the cargo cavity of the device, and the long arm is directed toward the latch of the jaws and has a counterweight, is made on the extended end of the jaw jaw on the side of its convex, hollow surface, and the bearing arm has a supporting turn and the second counter with . 3 il.

The invention relates to lifting devices for loading stone blocks in quarries.

The purpose of the invention is to increase work efficiency by increasing the reliability of the device and expanding its performance.

Cah figure 1 shows the open load-carrying device; figure 2 - closed lifting device without load; on fig.Z - lifting device when lifting cargo.

The load gripping device consists of the load gripping jaws 1 and 2, the control lever 3, the hinge rod 4 and the load link 5.

Load gripping jaw 1 is made of two parallel curvilinear. beams 6 connected by links 7. One end of each beam 6 is hinged B

dinene with retaining lever 2. Near hinge 8 there is a hinge 9 connecting the load-lifting part I with the rod 4. The second ends of each beam are made in the form of tips 10. Angled connection 7 together with the lateral drafts of the beams 6 form a supporting ledge inside which mounted counterweight 11.

Lifting jaw 2 is made of two parallel curvilinear beams 12 connected by links 13. Ends 14 (Fig. 2) Saloks 12 are made extended and on the side of the concave surface are connected by a hinge 8 to the load gripping jaw 1, and on the side of the convex surface of these beams are connected by a hinge 15 to a control lever bus 3.

with SP

; 0

The second ends of the beams 12 are filled. In the form of tips 16 SFG.1).

The lever 3, connected by an arnier 15 to the load gripping jaw, 2 and the hinge 17 with the rod 4, is a multi-arm crank lever, whose short arm is directed between the geometric axes of the hinges 15 and 17. The long ball of the control lever 3 is directed to the side of the jaw 2 and has a counterweight 18 "The position of the long arm is associated with the placement of the guide rod 19, the space 15 between which and the body of the control lever is a slot

20dl placement of cargo earrings 5. At the end of the rod from the load-gripping jaw 2 reinforced latch 20

The 21 cargo earrings 5, which, together with the folding of the rod 19, form the closure loop 22 of the slot 20. The geometrical value of the long arm of the control lever 3 is 25 a segment between the geometric axes of the hinge 15 and the closure loop 22.

 At the end of the rod 19 on the side of the jaw 1, a second jg retainer 23 of a cargo earring 5 is reinforced, forming together with the folding of the guide rod 19 a loop 24 of the opening (figure 2) of a slot 20. A section between the geometric axes of the hinge 15 and the loop 24 The opening is an additional lever of the control lever 3, which is used when opening the load gripping device, .40

On the side surface of the control lever, a stop 25 is fastened, which, when the load-gripping device is fully opened, is in contact with one of the beams 12, holding 5

leverage.

The proposed lifting device works as follows.

Opened lifting device hinged on the hook of the load-lifting crane Q by means of a load link. 5, which are located in the opening 24 of the opening of the slot 20 of the control lever 3, are put on the load so that the free lying cargo lies in any direction. Place the gap between the tips 10 and 16 of the carrier and retaining levers. If you have to lift the rectangular block facing stone.

hillock in the face and separated from the array of minerals by sawing, the tips 16 of the load gripping jaw 2 must be located on the upper ledge behind the vertical saw, and the tips 10 of the load gripping jaw 1 on the lower step of the horizontal saw. After this, the load is removed from the load link 5 and, with the help of a crane hook, it is transferred along a 19-in direction rod. loop 22 of the control lever 3, and then begin to lift the hook.

Under the influence of the cargo earring 5, the long shoulder with the counterweight 18 will begin to turn upwards and the control lever 3 will create on the hinges 9 and 15 forces that bring the jaw 1 and the jaw 2 close. the device will occur before contact with the load of the jaws 1 and 2 is taken. Depending on the shape and the size of the cargo, either the concave surfaces of the jaws 1 and 2 or their tips will come in contact with it iki 10 and 16. If the lower part of the stone block is in the culm or in the ground, the lugs 10 and 16, vsparsha them, enter under the bottom edge of the block. The carrier arm with the counterweight 11 will be especially intensively in soft porosity.

When a stone block is seized directly in the pit of the quarry, the first will begin to turn the load-gripping jaw 2 o. Its tips 16 will slide into the vertical kerb after sliding along the upper ledge. After that, a more loaded load-gripping jaw will begin to move. Its tips 10, intensively ripping off a layer of stab, which on the lower ledge can be much larger than the upper ledge, will enter the lower propyl.

After the load gripping jaws 1 and 2 come into contact with the load, the load gripping device can be tilted along with it, since the weight of the shackle 5 located in the loop loop 22 will be shifted relative to the common center of gravity of the load gripping device with the load in the direction of the load jaw 2. As a result of turning, a roll will be rolled.

xVv NV4 N N CCH 44V

FIG. five

Claims (1)

Formula of the invention The load gripping device comprising load-gripping jaws pivotally connected to one end between themselves, the first of which is pivotally connected to the long arm of the control lever of the opposite arm, the short arm of which is pivotally connected to one end of the rod, the other end of which is pivotally connected to the second jaw, with this lever mentioned. it is equipped with locks for opening and closing jaws, which differs from me by the fact that, in order to increase work efficiency by increasing the reliability of the device, the end of the first person The tusk is made above which the above-mentioned hinge connection of the first jaw with the control lever is located above the hinge joint of the ends of the jaws, and the hinge connection of the control lever with one end of the rod is located on the outer side of the jaw, while the control lever is equipped with a counterweight to the long arm, The second jaw is made with a counterweight and an abutment. ten 1595779 FIG. 3