SU1390167A1 - End-engaging gripper - Google Patents

Description

(21) 3712640 / 29-11

(22) 03.22.84

(46) 04.23.88, Bull. Number 15

(71) Illichivsk Sea Trade Port

(72) V.M.Brezhnev

(53) 621.86.061 (088.8)

(56) USSR Author's Certificate No. 1081111, cl. In 66 C 1/48, 1980.

(54) MECHANICAL CAPTURE

(57) The invention relates to lifting and transport devices used in loading and unloading operations. The aim of the invention is to increase productivity and reliability of operation. The end grip comprises a housing consisting of cheeks 1, between which a rotatable spring-loaded pickup 3 is mounted. In the upper part of the cheeks 1 of the housing there is a locking lever 6 for picking up 3. Between the cheeks 1 there are ratchet 7 and

13 5 7

Jv

20

ratchet 8 rigidly connected to it. Ratchet 7 is made with a ratchet that interacts with a fixed ratchet 10. On the same axis with the locking lever 6 a rotary spring-loaded lever 11 is placed, on which the pusher 16 and its retainer 18 are fixed, spring-loaded with each other. In the initial position of the Institute, the swivel lever 11 is located horizontally. When the sling connected with the pivot arm 11 is tensioned, the latter takes up a position on the horizon. The pusher 16 moves to another ratchet lip 7. The load is clamped. When it is lowered onto the bearing surface, the tension of the straps is weakened. New-. the rotary lever 11 is lowered to a horizontal position. Under the action of the pusher 16, the ratchets 7 and 8 and the ratchet are turned, lifting the locking lever 6, the grip opens. 6 Il.

eleven

WITH

with

FIG.

The invention relates to lifting transport devices used in loading and unloading operations, for example, in ports when overloading large-diameter pipes and sheet material, and can be used for handling processes with various objects in cases where the presence of a person in the suspension zone is unacceptable or undesirable due to temperature, aggressive environment, etc.

The purpose of the invention is to increase productivity and reliability. FIG. 1 shows the capture, general view; in fig. 2 is the same, the top view in FIG. 3 - capture at the moment of departure (capture is open), general view; in fig. 4 is a side view of jaw in FIG. 5 - view of ratchet with face coupling; in fig. 6 - the same, side view

The end grip contains a body consisting of two cheeks 1, inside of which a pickup 3 with a spring 4 is mounted on the axis 2. In the upper part of the body on the axis 5 there is a locking lever 6 made of two cheeks. The automatic release mechanism includes a ratchet 7 and rigidly - din ratchet with him ratchet 8, while the ratchet 7 is complete with the front ratchet 9, interacting with the fixed front ratchet 10. The front ratchets 9 and 10 are made in the form of the front helical teeth.

A pivot arm 11 is mounted on axis 5, which is spring-loaded relative to the body by a spring 12. On the casing there is a latch 13 for interacting with the ratchet 7. In this case, the latch -13 and the locking lever 6 are under the action of the spring 14. On the pivotal the lever 11 is harnessed on the axis 15 of the pusher 16, and on the axis 17 - the latch 18 of the pusher 16, while the pusher 16 and the latch 18 are under the action of the spring 19. The stop 20, which interacts with the ratchet 8, is rigidly fixed on the locking lever 11. and 8 are spring-loaded in the axial direction hydrochloric 21.

Face grip works as follows.

The grip is in the initial position (Fig. 1). In this case, the pivot arm 11 connected to the carrying sling is horizontal.

ten

15

a 20

y, 25 y- 30 3901672

position (shown by a dash-dotted line), i.e. cargo was built up. The crane is not behind the sling, the pivoting lever 11 rises and takes a position at an angle of 45 (FIG. 1). At that, the pusher 16 jumps to the next protrusion of the ratchet 7. In this position the crane lifts and carries the load.

When the load is lowered onto the supporting surface, the tension of the slings weakens. The pivot lever 11 is driven down by its own weight and the spring 12 to a horizontal position. Under the action of the pusher 16, the ratchets 7 and 8 and the end ratchet 9 are rotated through an angle of 40. Turning on axis 5, the end ratchet 9, interacting with the end ratchet 10, is shifted along the axis and the tooth of the ratchet 8 fits under the stop 20 attached to the cheek 1 of the locking lever 6, lifts it (FIGS. 2 and 3), turning on the axis 5 at an angle of 15 °. At the end of a 40 ° turn

The graders 7 and 8 and the end ratchet are secured in this position by the latch 13. The gripper is open.

If the load is laid correctly, the grippers can be removed from the load, for which the crane pulls the carrying straps, raises the turning lever 11 by an angle of 45. With the increasing tension of the slings, the pickup 3 starts to turn35

4 until they come off the load (Fig. 3). When lifting the lever 11, the pusher 16 again jumps to the next protrusion of the ratchet 7,

When the load is removed, the pickup 3 returns to its original position under the action of the spring 4. Simultaneously, the lever 11 is rotated relative to the housing by the action of the spring 12. at the same time the ratchet 7. Turning together with the ratchet 7, the end ratchet 9, with its end teeth, falls into the depressions of the end ratchet 10, is shifted by the action of springs 21, releasing the stop 20 of the locking lever 6 (Fig. 2). The locking lever 6 under the action of the spring 14 returns to its original position, fixing the pick-up 3. The gripper is ready for reloading the load. At the same time, the ratchets 7 and 8 and the end ratchet 9, turning on 20, are secured with a lock.

If the load is laid incorrectly, and the operating sling is weakened so that the pivot arm 11 takes a horizontal position and the grip opens, then the crane operator pulls the sling so that the pivot arm 11 raises by an angle of 20 °, and again so that the pivot arm 11 received a horizontal position. In this case, the mechanism works as in the case of a descent from the load, i.e. the pusher 16, when lifting the pivoting lever 11, jumps to the next protrusion of the ratchet 7, when the pivoting lever 11 is lowered, the ratchet 9 is turned, turning its teeth between the teeth of the ratchet 10, releasing the locking lever 6, which, in turn, is under the action of the spring 12 returns to its original position. The grip is closed and the load can be lifted again without re-locking.

Claims (1)

When a load is stepped or when the automatic release of the load is undesirable, the automatic release mechanism can be turned off. To do this, you need to turn the latch 18 until its protrusion falls into the trough of the pusher 16. The spindle 18 protects the spontaneous displacement of the spring 19 (FIG. .4) claims. End grip predominantly for pipes, comprising a housing, state 0 five 0 five 0 five two cheeks placed between the cheeks and a pivot arm fixed by means of the axes for connecting to the sling, a spring-loaded pickup, made with a notch and an automatic cargo release mechanism, including a pivotally mounted on the axis of the pivoting lever with the possibility of its locking lever in the pick-up notch locking lever that is hinged to the cheek of the housing a latch and a pusher and a pusher latch fixed on the pivot arm, characterized in that, in order to increase the productivity and reliability of the locking lever is made of two cheeks, and the mechanism of automatic cargo wetting is equipped with a fixed face ratchet mounted between the cheeks of the locking lever, fixed with a possibility of longitudinal movement relative to the axis of the rotary lever axially ratchet, rigidly connected to each other, one of which is designed to interact with a fixed face ratchet, a pusher and a retainer, and an anvil fixed to the cheek of the locking lever mode with the second ratchet, while the swivel and locking levers are spring-loaded relative to the cheeks of the case., H - J 2 20 5 eleven 9i9L 9 b FIG. five oo FIG 6