SU1740302A1 - Gripping device for pipes - Google Patents

Abstract

The invention relates to lifting and handling equipment. The purpose of the invention is to simplify the design. The pipe gripping device comprises a frame 1, a yoke 7, located at the ends of the frame of the carriage 3 with lifting legs 4, connected by troso-block systems, the cables 12 of which are stored on. The blocks 10, fixed on the cross beam 7, and on the blocks 11, fixed on the frame 1, and the corresponding carriages 3 are fixed. 2 Il.

Description

This invention relates to lifting and gripping equipment, in particular to pipe grippers.

The purpose of the invention is to simplify the design and increase reliability.

FIG. 1 schematically shows the proposed device; On f ig 2 - the same, top view.

The pipe gripping device comprises a frame 1 with horizontal guides 2 fixed on it. On which the carriages 3 are installed, with pivoting catch legs 4, two on each side. Between the ends of the frame 1 and the carriage 3 mounted spring 5.

To the frame 1 by means of racks 6 fixed on it, a yoke 7 is attached, provided with sleeves 8. covering the racks

6. Between the crosspiece 7 and the frame 1, a cyclic mechanism 9 is established for fixing the relative position of the frame and the crosshead of the Traverse.

7. Frame 1 and carriage 3 are interconnected by four multiple polyspasts, one part of blocks 10 of which is fixed on the transverse beams of cross member 7. And the other part of blocks 11 is mounted on frame 1

The blocks of each chain pulley round the cables 12 and are connected in pairs to each other through additional bypass blocks 13 located on the frame T, the axes 14 of which are perpendicular to the axis 15 blocks of the 11 chain pulleys. The ends of each cable 12 are attached to the inner ends of the carriage 3 mounted on each side of the frame 1.

To center the device on one pipe on frame 1 along the longitudinal axis of symmetry, two supports 16 are made closer to the ends along the radius of the pipe being lifted. Two spring-loaded beams 17 are installed in the same supports 16, which serve to install the device on two pipes. When a device is installed by a device in the lower shaft of the gondola to its wall, the spring-loaded beams 17, under the effect of the force of the lifting mechanism, move inside the support 16 of the frame 1, thus preventing the installation of the pipe against the side wall of the railway gondola.

The device works as follows.

Traverse 7 is hung on the hooks of the lifting mechanism and lowered the device on the captured pipe. In this case, the carriage 3 under the action of the spring 5 is in extreme positions. After installation,

WITH

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We put the fixing mechanism 9 on the support pipe 16 and loosening the cables of the lifting mechanism, as a result of which, when lifting the cross beam 7, it moves upwards relative to the frame 1.

When this cables 12 block polyspast breaking the resistance of the springs 5, move the carriage 3 to the center of the frame 1 until then. until paws 4 grip the pipe ends. When the paws are further raised, 4 slides along the pipe ends and along the inner tube forming line. In this case, the paws 4 occupy an equilibrium position corresponding to the diameter of the pipe being lifted, and lifting and transporting

cargo.

When installing the pipe into the stack or into the lower span of the gondola of the yoke, the traverse 7 is lowered to the frame 1. The cables 12 are loosened and under the action of the spring 5 of the carriage 3 are returned to their original position, freeing

cargo.

The mechanism 9 fixes the position of the crosspiece 7 at a minimum distance relative to the frame 1, and as the device is further raised, the cables 12 remain loosened, thus providing relief from the pipe

In order to load two pipes of different length, the device is mounted by beams 17 on the upper tube-forming pipes so that the supports 15 are located between the pipes in free space. When the tubes of the carriage 3 are gripped in each guide, they are self-aligning so that the legs 4 of each carriage 3 abut their ends, the lifting elements 18 slide along the inner forming pipe and the legs 4 occupy an equilibrium position corresponding to the lifting of the two pipes.

Claims (1)

Claims of pipe gripping device containing a frame, symmetrically arranged 0 relative to the vertical axis of symmetry, horizontal guides, mounted in them and spring-loaded relative to the frame in the horizontal plane of the carriage with lifting legs, driving them 5 movements, including a yoke attached to the lifting mechanism, tied to the frame by the mechanism of fixing their mutual position, the cable-block systems, located symmetrically with respect to the vertical axis of symmetry, the frame, the cables of which are successively stored on longitudinally mounted blocks fixed at the ends of the traverse and blocks fixed 5 on the frame, and additional blocks that differ, in order to simplify the design and increase reliability, and The carriages are rigidly fixed at the ends of the frame, and the cables are fixed 30 with their ends on the corresponding carriages and stored on additional blocks arranged in pairs in vertical transverse planes and fixed to the frame in the zone of its middle part. 35 fJff N 3