SU1652279A1 - Grab - Google Patents

Abstract

The invention relates to cargo handling equipment. The purpose of the invention is to increase the reliability of working by reducing the dynamic loads. The grapple includes a housing 1, an upper 2 and a lower 3 traverse connected to the jaws 4, a rod 9, a copier 7 connected to the housing 1 through the fingers 6. When the grapple is in operation, its working cycle is ensured by the interaction of the fingers 6 with the copier 7, in which there are zigzag grooves. 6 Il.

Description

The invention relates to lifting equipment.

The purpose of the invention is to increase the reliability of work by reducing the dynamic loads.

FIG. 1 shows the proposed grapple in an expanded condition; in fig. 2 - the same, in the closed state; Fig. 3 is the same in the transport state; in fig. 4 - the same, in the initial state at the moment of the beginning of the opening of the jaws; in fig. 5 - scan of the cylindrical surface of the copier; in fig. 6 - the proposed grab, a general view.

The grab includes a housing 1, an upper 2 and a lower 3 traverse, jaws 4 pivotally connected to them, 5 gi, connecting the latter with the housing 1 and the mechanism for fixing the position of the jaws 4 relative to the traverse. The mentioned mechanism contains fingers 6 interacting with each other and a cylindrical copier 7, on the outer surface of which there is a zigzag groove 8, made continuously from alternately arranged V-shaped grooves of different height, measured along the height of the copier 7. Fingers 6 are rigidly connected to the body 1. The grapple is provided with a vertical bar 9 fixed on the lower cross bar 3 with a disc support 10 at its upper end, in the middle part of which there are pivotally mounted clamps 11 with counterweights,

In the middle part of the housing-1, under the anvil tO, there is an upper support ring 12, to the bottom to which a guide sleeve 13 is attached. In the lower part of the housing inside it is an annular projection 14, above which is placed the lower support ring 15, you-. complete with the possibility of vertical movement relative to the housing 1. The ring 15 is rigidly connected to the nap (L

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11 under the action of the arising t x bending moment from each forest reliably abuts the body 17 (see Fig. 3).

The third cycle - lowering on the roll table. In the moment of the grapple's lusts, the movement of the grapple to the solid begins

equal pipe 16, the lower end of which is connected to the upper crosshead 2, and the upper end with limiter 1 / clamps. The axis of the rod 9, bushings 5 13, pipes 16, copier 7 and limiter 1 / are located along the axis of the housing 1. Copier 7 is made rotatably with respect to the protrusion 18 of the ring 15. In the upper part of the housing 1, there is a 10 plate 19 for securing a block for suspending the grapple on a crane.

The grapple works as follows.

When open, when the stop 10 15 of the rod 9 lies on the ring 12, the retainers 11 with counterweights are inside the pipe 16, the fingers 6 are placed at points a, a of the groove 8, the grapple is lowered onto a floating beam of wood or another load 20 lying on the box. or other coasters. As soon as the lower traverse 3 rests against the beam of the wood, the closure of the jaws 4 of the gray begins immediately. In this cycle, moving 25 upward the lower cross member 3 causes upward movement of the vertical rod 9 with the plate support 10 and the retainer 11 with counterweights, which, coming out of the guide tube 16, under the action of the counterweights, open and rest against the retainer 17 of the retainers, and fingers 6 are moved along V-shaped grooves of slot 8 of copier 7 at points b, b ,. At the transition of the fingers, 6 out of 35 ticked the distance between the points G and gh

points b, c, g, d, points, grab continues to displace the sleeve 13, impact the upper ends of the clamps 1 them, which causes the bottom ends of the clamps 1 of the pit 17 to re-enter the pipe 16. Thus, the grapple is prepared for

The fourth cycle - free the grab from the load. When the grab lifts the lower ends of the clamps 11 in the pipe 16, then under the force of the beam of the forest, the jaw of the traverse, the vertical pin opens the jaws of the forest warp, and the load arising from the upper ring 12 interacting with the upper ring 12 is accepted. Opening the jaw it is generated by moving n from the points g, g, a, a, a, that the rotation of the copier 7 by some and lowering it at a distance

with respect to the finger connected to the housing described cycles are repeated

points a, a to points b, b (there is a rotation of the copier 7 at some angle around its vertical axis, which causes the vertical movement of the copier 7 and the lower support ring 15 relative to the housing 1. The fingers 6 fall into the points b, 6j prevents the lower 15 from approaching and the top 12 support end, on this the jaw closure cycle 4 ends (see FIG. 2) I

Next cycle - grab lifting

with the help of a crane, while the forest beam is lowered into the lower part of the jaws 4, the body 1 with the fingers 6 moves upward, causing the fingers 6 to move from points b, b to points c, c, c. With the iHoce peg of the forest, the static load from the load mass, traverse, jaws and traction is not perceived by the fingers 6, but is distributed between the protrusions 14 and, the stop 17. The locking mechanism with counterweights is prevented from opening the grapple as only the lower ends of the latches

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11, under the action of a bending moment arising in the jaw, against the mass of a forest beam reliably abuts the stop 17 (see Fig. 3).

The third cycle - lowering the grapple on the rolling table. When the grapple jaws rest on a solid base, fingers 6 start to move from

5 10 ticked between ДУ points g, gh

points b, c, g, d, points, the grab body 1 continues to move downwards, while the sleeve 13, acting on the upper ends of the clamps 11, closes them, which causes the lower ends of the clamps 11 to move from the limiter 17 to the pipe 16. Thus , grapple prepared for deployment

The fourth cycle - the release of the grab from the load. With the crane, the grapple lifting begins. As the lower ends of the retainers 11 are located in the pipe 16, then the grapple jaws open, the forest beam is released under the action of the force of the force of the beam of the forest beam, jaws, t g, traverse, vertical bar, the load-bearing support 10 is perceived dynamically. interacting with the upper support ring 12. The opening of the jaws is accompanied by the movement of the fingers 6 from the points g, g, a, a, a, what causes the rotation of the copier 7 at a certain angle and lowering it by the distance of the distance between the points I and g

one

and dots

relative to the fingers 6, rigidly connected to the housing 1. The cycles described below are repeated.

Claims (1)

Invention Formula A grab containing a housing hinged on the grunt, upper and lower traverse, pivotally connected to the ends of the lower traverse of the jaw, ti, each of which is articulated respectively with one of the ends of the upper traverse and with one of the jaws mounted inside the case so that it can rotate relative to it is a cylindrical copier, on the outer surface of which a zigzag groove is made around the perimeter and fingers fixed to the body, the ends of which are located in the said groove with the possibility of interaction with cylindrical copier otlichayuschiy- in that, in order to increase reliability of operation by reducing the di- W Bunch of woods water - - / - Fig 1 Yu FIG. 2 Fig.Z Tiberdoy base FIGA FIG. five Fig 6