SU1085927A1 - Single-rope grab - Google Patents

Abstract

A SINGLE CLIPPER, containing jaws, pivotally connected to the bottom and by means of t with the top of its traverses, is a tackle, one end of the envelope of the closing rope block of which is connected with a lifting line. a mechanism, and a mechanism for fixing the jaws in the open position, characterized in that. in order to increase the reliability of operation, the jaw fixation mechanism in the open position includes a spring-loaded latch mounted on the upper traverse with the possibility of limited rotation, a guide fixed on one of the tg, movable — along the guide slide, one of which is spring-loaded and connected flexible connection with a latch, and the other is pivotally connected by means of additional pull to the jaw, upward, fixed on the upper traverse, and the support fixed on the closing rope of the chain hoist with the possibility of mutual ( action with a latch and stop, while the grab is equipped with a spring-loaded drum placed on the upper S traverse, to which is attached the other end of the closing rope of the polyspast, whose block is mounted on the lower traverse.

Description

The invention relates to load gripping mechanisms, namely, single-cable grabs, and can be used, 0 of all public households, for handling mainly lightweight sonar goods. A single-rope grab containing jaws, sharsched or connected to the shaft and with upper cross-arms, a pulley block, one end of the envelope of the end-rope block of which is connected with the lifting mechanism, and the jaw fixation mechanism in the open position ij are known. The disadvantage of this grapple is its low reliability due to the presence of a falling lever, jamming of the grapple, lock and counterweight when tilting, which are not triggered when the grapple is inclined, and spontaneous opening of the grapple when the grapple rope is accidentally weakened, for example, when the grapple hits an obstacle. The purpose of the invention is to increase the reliability of the grab. This goal is achieved by the fact that in a single-cable grab containing jaws pivotally connected to the lower one and by means of the upper traverse, a polyspast, one end of which envelops the tightening rope block which is connected to the load-lifting mechanism, and the fixation mechanism of the jaw in the open position, the latter includes a traverse mounted on a vertex with the possibility of limited rotation of a spring-loaded latch, a guide fastened on one of the tons, movable along a slide ram, one of which is a spring It is connected with a flexible link with a latch, and the other is pivotally connected by means of an additional pull to the jaw, an emphasis fixed on the upper traverse, and a holder fixed on the closure cable of the polyspast with an interlock with the latch and an emphasis, while the grapple is equipped with a spring-loaded drum, placed on the upper traverse se, to which is attached the other end of the closing rope of the chain hoist, the block of which is mounted on the lower traverse. FIG. Figure 1 shows the grab in a closed loop, general view; FIG. 2 is a section A-A of FIG. one ; in fig. 3-grab in the open position, the general view; in fig. 4 is a view B in FIG. 3; in fig. 5 - grab in the open position in the section of the left when working with two cargo booms, obgii view. The single-cable grapple contains an upper yoke 1 with tights 2 rigidly attached to it and pivotally attached tines 3. Jaws 2 and 3 are jaws 4 and 5 that are pivotally hinged and are hinged to the lower arm 8 of FIG. 2). The rods 3 are connected by crossbars 9 and 10 (Fig. 4), between which a guide I is installed with sliders 12 and 13. The slide 12 is spring-loaded spring 14 and is connected by a flexible rod 5 to a spring-loaded latch 16 mounted on the upper cross bar 1 with the possibility restricting its rotation using the stop 17. The slider 13 is pivotally connected to the jaw 5 tons of 18. 18. On the upper traverse 1, the stop 19 is fixed. On the axis 20 a drum 21 spring-loaded 22 is mounted. On the lower traverse 8 there is a pulley block 23 the rope 24 which is fixed to the yoke 25, with one end the rope 24 is mounted on the drum 21, and with the help of a second end, the grapple is suspended from the lifting mechanism. For operation with two cargo booms, an eyebolt 26 is attached to the upper traverse 1, to which an additional sling 27 is attached to the second cargo boom and the slider 12 is connected to the sling 27 by means of a latch 29 by means of a flexible rod 28. works as follows. The opened grab (Fig. 3) lowers; c onto the material intended for transport. When the jaws 4 and 5 rest against the material and the tension of the rope 24 is relaxed, the slider 12 under the action of the spring 4 lowers the guide II down and, using a flexible rod, I5 unfolds the latch 16, freeing up space for the cage 25. For scooping the material 24 the rope 24 the lifting mechanism is pulled upwards, swept from drum 21; lifts the block 3 and together with the traverse 8, the Chelyuts 4 and 5 are closed, scooping up the material. At that, the slider 12 rises along the guide 11 under the action of the slider 13 pivotally connected by a pull 18 to the jaw 5. The flexible pull 15 is loosened, the latch 16 rotates until it stops (not shown). in the rope 24 (Fig. A

When the grapple is unloaded, the jaws 4 and 5 abut against the material, the rope 24 is loosened and wound onto the bar. Under the action of the spring 22, the clamp 25 rests against the latch 16, due to its mass, unfolds it and descends further down, after which the latch 16 under the action of a spring 15 (not shown) turns in. the reverse side until it stops 17. Then the rope 24 is lifted by a lifting mechanism, the yoke 25 rests on the latch :; at 16 and the stop 19 (Fig. 3), the upper 20 of the yoke 1 is raised, and by pulling t 2 and 3, the jaws 4 and 5 are opened, the material is poured out. At the same time, under the action of the mass of the jaws 4 and 5, the rope 24 is wound through the block 23 from the drum 25 to the full opening of the jaws 4 and 5, the slide 13 descends along the guide 11, releasing the slide 12, which under the action of the clamp 14 drops, nat The flexible zoo is 15. The latch 16 in this position is pressed by the yoke 25 against the stop 17. After that, the opened grapple is transferred by a lifting mechanism to the site. scooping the material and the cycle repeats.

 When operating with two cargo booms, the opened grapple is lowered onto the material intended for transportation. When the jaws rest in JQ material and the rope 24 and the sling 27 are loosened, the slider 12 under the action of the spring 14 goes down, unfastens the latch through the flexible rod 15

16, making space for the passage of the cage 25. For scooping the material, the rope 24 is pulled up with a lifting mechanism, the block 23 and traverse 8 are lifted, the jaws 4 and 5 are closed, and the material is scooped. At that, the slider 12 rises along the guide 11 under the action of the slider 13 and the latch 16 rotates up to the stop 17 under the action of a spring (not shown). By the joint operation of the load-lifting mechanisms, both cargo booms, the grapple is transferred to the place of unloading and hangs on a sling 27. Rope 24 is relaxed, the yoke 25 rests on the top of the latch 16, unwraps it by its own weight and goes down further, the latch 16 under the action of a spring (not shown turns up to the stop 17. Jaws 4 and 5 open and the grapple is empty. Then the rope 24 is a load the lifting mechanism is selected, the holder 25 abuts the latch 16 and the abutment 19 and the gripper in the opened state collaboration derricks transferred to the place of the scooping of material (FIG. 5) is povt.or cycle.

The introduction of new essential features makes it possible to increase the reliability of the operation of a single-line grab with the simplicity of its design. Since the jaws of the grapple are fixed in the tucked position by the mass of the jaws and the weight taken by them, disclosing the grapple is unlikely. This grab provides case-friendly work with materials located on an inclined plane.

With the help of a grab, such a construction is possible. Unloading, both when the grapple is in contact with the supporting surface, and overhang.

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Claims (1)

A SINGLE-ROPE GRAPPLE containing jaws articulated to the lower and by means of rods with the upper traverse, a chain hoist, one end of the envelope block of the closing rope of which is connected with a load-lifting mechanism, and a mechanism for fixing the jaws in the open position, characterized in that, in order to increase the reliability of operation , the mechanism for fixing the jaws in the open * · · · position includes a spring-loaded latch mounted on the upper traverse with the possibility of limited rotation, a guide fixed on one of the rods, female - along the guide slide, one of which is spring-loaded and connected by a flexible connection with a latch, and the other is pivotally connected by means of additional traction to the jaw, an emphasis mounted on the upper traverse, and both fixed on the closing cable of the chain hoist with the possibility of interaction with the latch and emphasis, while the grab is equipped with a spring-loaded drum placed on the upper traverse, to which the other end of the closing chain of the tackle is attached, the block of which is mounted on the lower traverse. . SU „., 1085927>