SU852761A1 - Device for engaging apertured articles - Google Patents

Description

one

The invention relates to lifting and transporting devices used in loading and unloading operations with cargoes having openings in the ends, for example, pipes of medium and large diameter-5.

There is a known pipe lifting grip comprising a C-bracket with a lower support part and an eye for visiting the load lifting mechanism.

1 Possessing compactness and ease of manufacture, this device deforms the end edges of the pipes, and it cannot be used to work with pipes made of 15 brittle material.

The aim of the invention is to prevent damage to the edges of the pipes and the expansion of technological capabilities.

This is achieved by the fact that the supporting part of the bracket is made in the form of a frame, provided with diagonally arranged elastic supports.

In addition, the supporting part is made of two frames interconnected with each other with the possibility of adjusting the size of the supporting part in height.

FIG. 1 shows a gripper in which the supporting part is configured as a frame; in fig. 2 - the same, but supported

The connecting part is made of two frames; in fig. 3 shows section A-A in FIG. 2

The gripper for lifting pipes (see Fig. 1) contains a bracket 1 with a supporting part made in the form of a frame 2, on the edges of which diagonally fixed support platforms 3 and 4, on which elastic supports 5 and 6 are installed, contacting the walls of the pipe 7 ; for suspension to the lifting mechanism, the bracket is provided with a protrusion 8.

Depicted in FIG. 1 grip suitable for use with pipes of the same diameter.

The gripper shown in FIG. 2, comprises a supporting part made of two frames 2, each of which is provided with transverse grooves 9 and 10, which have fixing bolts with a nut 11 and 12.

On the edge of one frame, a support platform 3 is fixed, on which an elastic support 5 is installed.

A support platform 4 is also fixed on the edge of the other frame, on which an elastic support b is installed, installed diagonally and in contact with the pipe 7.

For the suspension to the load-lifting mechanism, one of the frames is provided with a protrusion 8. Such a gripping structure makes it possible to adjust it to the required diameter.

The device works as follows.

The grip is introduced into the cavity of the pipe from two sides, and a command to lift is given. When the lines are tightened, the grip tends to turn around its axis, but, meeting the pipe wall on its way, is pressed against them by elastic supports 5 and 6 (for the grip shown in Fig. 1) and in this position remains permanent cycle. After that, the grip is withdrawn from the cavity of the pipe.

The gripper shown in FIG. 2, works as follows.

When the nuts 11 and 12 are loosened, the frames 2 are displaced relative to each other by the required pipe diameter and fixed in this position by the nuts 11 and 12. Otherwise, the whole work cycle corresponds to the work described above.

The presence of elastic supports in the proposed device will ensure the elimination of deformations of the end edges of the pipe made of a plastic material and will eliminate the breakdown of the pipe made of a brittle material, which achieves the technical and economic effect.

Claims (2)

1. A pipe lifting grip comprising a C-bracket with a lower support part and an eye for attachment to a lifting mechanism, characterized in that in order to prevent damage to the pipe edges, the supporting part of the bracket is made in the form of a frame provided with diagonally arranged elastic supports. 2. The grip according to claim 1, characterized in that, in order to expand the technological capabilities, the supporting part is made of two frames interconnected with the possibility of adjusting the size of the supporting part in height. Sources of information taken into account during the examination 1. A. I. Kin and B. A. Urvantsev. Sling cargo. M., 1968, p. 107, fig. 47 (prototype). 53 pi / zJ 3 5 8 F1 Rig.2