SU1440846A1 - Load-engaging device - Google Patents

Abstract

The invention relates to loading and unloading operations. The aim of the invention is to increase reliability. The load gripping device consists of frame 1, bushings 2, shafts 3, levers 4, finger grippers 5, half couplings 6 with levers 7, power springs 8, levers 9, tg And, fingers 10, upper semi-x

Description

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clutches 14 with levers 15, tg of return stroke 17, hydraulic cylinders 21 rotate the clamps 22 and hydraulic cylinders 25. The clamping force is created by clamping springs, which must be pre-tensioned when installed in the load gripper. The release of products after their transfer occurs when the hydraulic cylinders are pulled in, while the levers 15, acting on the fingers 16, rotate the coupling halves 6 counterclockwise, while the coupling halves 14 under the influence of reverse springs

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FIELD OF THE INVENTION The invention relates to a lifting and transport equipment, in particular to lifting devices.

The aim of the invention is to increase reliability.

FIG. 1 shows a load gripping device, top view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2; in fig. 4 — device variant with reversing springs; in fig. 5 - the same, top view.

The load gripping device comprises a frame 1 with two sleeves 2 fixed on it, through which vertical shafts 3 pass, at the lower ends of which levers 4 are fitted, in which holes finger grips 5 pass through. On the sleeves 2, the lower half-couplings are freely seated the levers 7, in the holes x of which the hooks of the power springs 8 enter, and the levers 9, the coupled pins 10 with t and gs, which enter the longitudinal holes in the levers 9 and the t 11 of the working stroke. In the upper ends of the half couplings 6, there are notches 12 in which the protrusions 13 of the upper half couplings 14 are fitted, rigidly mounted on the upper ends of the shafts 3. The semi-couplings 14 have levers 15 that are coupled with fingers 16 with reverse stroke 17, which enter the longitudinal holes in the levers 15 and t gax 17 (according to the second variant, the levers 15 can be connected by reversing springs 18).

The ends of tg 11 and 17 are hinged respectively to the rods of the hydraulic cylinders 19 and 20, the bodies of which are hinged on the frame 1. The hydraulic cylinders 21 of the clamps 22 are also placed on the frame 1.

Frame 1, on the one hand, is pivotally suspended from cross-bar 23 on fingers 24, and on the other hand on hydraulic cylinders 25, the rods and bodies of which, respectively

either follow the coupling halves 6, or in those cases where the finger grips 5 during the return stroke abut the products, they stop. After the rods of the cylinder chains are retracted, the lifting of the load is established over the installed products. The load gripping device provides rapid capture and retention of groups of arbitrarily arranged products of various shapes, which ensures an increase in labor productivity in the operation of disassembly of the stack products. 5 il.

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pivotally connected to the frame 1 and the beam 23.

The operation of the load gripping device starts from the initial position, in which it is installed by the manipulator over the next group of products, to be captured.

In the initial position, the rods of the hydraulic cylinders 19 are retracted and, accordingly, the half-couplings 6 are rotated by threads 11 counterclockwise, and the clamping springs 8 are extended; the rods of the hydraulic cylinders 20 are extended and, accordingly, the half coupling 14 are rotated by rods 17 (or springs 18) counterclockwise up to the stop of the projections 13 to the edge of the notch 12, respectively, the levers 4 are turned counterclockwise; the rods of the hydraulic cylinders 21 are retracted and, accordingly, the clamps 22 are raised; The hydraulic cylinder rods 25 are extended and, accordingly, the frame is not inclined.

Capturing products with a load gripping device is carried out in several ways: capturing products only with finger grips 5; gripping products with finger grips 5 with a clip between these products and clamps 22 of other products; the seizure of products finger grips 5 and clamps 22 with a preliminary tilt of the frame 1.

Since the latter option includes the previous ones, only work on this option is described.

From the initial position, the load handler is lowered onto the product group to be gripped so that the bottom of frame 1 does not touch the products. In this case, part of the finger grips 5 is lowered into the gaps between the products, and part, once on the product, stops. After being lowered, the hydraulic cylinders 19 extend and the hydraulic cylinders 20 retract the rods. At the same time, the springs 8 rotate the half coupling 6 clockwise, which, pressing on the protrusions of the coupling half 14, turn them, and with them the shafts 3 and levers 4. If while turning the levers 4 finger grips 5 that did not fall into the gaps meet them in their the ways they sink into them. The rotation of each lever 4 occurs until the corresponding grip 5 resists in the product or until the corresponding finger 10 reaches the end of the slot in the thread. The longitudinal cuts in ticks 11 and 17 provide both the possibility of full rotation of the levers 4, in which each gripper 5 will move in place of the previous one, and the possibility of each lever remain in its original position or stop in any intermediate position when the corresponding finger gripper 5 Click on the product. The clamping of the products by the clamps 22 occurs after they are turned by the hydraulic cylinders 21. The inclination of the frame 1 occurs when the hydraulic cylinders 25 are drawn in. This moves relative to the products of the grippers 5 and increases the likelihood of their falling into the gaps between the products.

When the items held by the clamps 22 are released, the latter are returned to their original position. When releasing items held by the finger grips, the hydraulic cylinders 19 retract the rods, and the pistons return the coupling half 6 and the springs 8 to the initial position. In this case, the notches 12 of the half couplings 6 move away from the protrusions 13 of the half couplings 14, as a result of which the clamping force is removed from the finger grips 5 and when lifting the load gripper they freely exit

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from the gaps between the products, after which the hydraulic cylinders 20 push their rods back, returning the rods 17 (or springs) and the coupling half 14 to their original position.

Claims (3)

Invention Formula . A load gripping device containing a carrier frame, vertical shafts placed in it with forks at lower ends, finger grips installed in the latter, lateral clamps and clamp cylinders hinged to the frame, characterized in that, in order to increase reliability, it is equipped with attached by ends to stocks hydraulic cylinders with horizontal rods with longitudinal holes, sleeves and coupling halves spanning vertical shafts, the lower ones of which are loosely mounted on the sleeves, are interconnected by springs and made with notches on the upper surfaces and with brackets movably mounted with free ends in the longitudinal holes x shtangs, and the upper ones are rigidly fixed on the vertical shafts and made with levers kinematically connected to each other to return the shafts to the initial position, and protrusions on the lower surfaces d l go into the cutouts of the lower coupling halves. 2. A device according to claim 1, characterized in that the kinematic coupling of the levers is a spring. 3. The device according to claim 1, characterized in that the kinematic coupling of the levers is drive rods. -five .d 9ig.5