SU1393758A1 - Gripping device - Google Patents

Abstract

The invention relates to a lifting and transport technology, in particular to gripping devices. The purpose of the invention is to increase productivity when grabbing stones in quarries with ledges. The gripping device in the open position is lowered onto the stones cut by the stone-cutting machine, while the counterweight 10 lies on the ledge 13 of the rock mass, and the dog 7 under its own weight leaves the engagement with the toothed rack 2 and does not prevent the two shoulders from closing; levers 3 when lifting the gripping device with a stone 12. When lowering the stone 12 under the action of the counterweight 10, the dog 7 is pressed against the rack 2. When the stone 12 touches the ground beam 4 with the dog 7, slide along the rack 2 downwards and the two shoulders 3 open. When lifting the gripping device without the stone 12, the dog 7 engages with the toothed rack 2 and does not allow the double-arm levers 3 to close. 2 Il. - Sfi (L oo with so ate CX) Figure 1

Description

: The invention relates to lifting machinery, in particular to gripping devices.

The purpose of the invention is to increase productivity when grabbing stones in quarries with ledges.

FIG. 1 is given a gripping device in the working position in FIG. 2, the same, in the opened position,} The gripping device contains a frame 1 on which the gear bar 2 is rigidly fixed and the double-hinged pivot arm 3, the yoke 4 on which the vertical direction is fixed. 5 toothed rack 2 and a hinge 6, connected with two shoulders levers 3, and a dog 7, interacting with toothed rack 2. A dog with cable 8, thrown over the roller 9, is connected to the counterweight 10, the gripping device is suspended from the lifting mechanism loop 11,

Gripping, the device works as follows.

The gripping device is suspended to the hoisting machine through the loop 11, in the open position, is lowered onto the stones 12 cut by the stone-cutting machine, while the counterweight 10 rests on the ledge 13 of the rock mass, and the dog 7 goes out of engagement with the rack 2 with its own weight; not upright and during lifting the stone 12 does not prevent the closing of the double-arm levers 3, when lowering the stone 12 (out of the limit; these are stone-work m; sh1iny where the ledge 13 is absent) under the action of the counterweight 10 doggie 7 pressed to the rack 2, After sop The stone 12 with the traverse 4 with the dog 7 slides along the rack

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2 down and two shoulders levers 3 open. When lifting the grip without a stone 12, the dog 7 enters the clamping with the rail 2 and does not allow the two shoulders to close the levers 3. The opened gripping device is transferred to the place of the cut stones 12 and the cycle is repeated.

Claims (1)

Invention Formula A gripping device containing a frame, two shoulders levers hinged on it, on the lower shoulders of which the clamps are fixed, and the upper arms are made crossed and connected by hinges with a traverse attached to the hook of the lifting machine, and a mechanism for fixing the two shoulders, including a connected arm with a frame, a gear element, a movable member associated with a cross member for interacting with a gear element and a vertical guide, characterized in that, in order to increase productivity when grabbing stones into the frame In the chambers with ledges, the vertical guide is rigidly fixed on the traverse, the toothed element is made in the form of a rigidly fixed frame in the central upper part and the upper part installed in the vertical guide rail, and the movable member is in the form of a hinged support from the working end. the pawl of the pawl, and the device is provided with a cable fixed on the other end of the pawl and a counterweight attached to the end of the rope to interact with the horizontal surface of the pit ledge. ////////// 7 ////// fi2.2