SU763575A1 - Support fork for smooth pipes - Google Patents

Description

I

The invention relates to a geological survey drilling technique and is intended for mechanical screwing (unscrewing a smooth-bore pipe string, a drilling or casing string.

Known lining plug, containing body with an opening, lever and handle {,

Also known is a fork plate comprising a handle and a housing with an aperture, inclined slots in the side walls of the aperture, and wedge-shaped bands 2 that are movably placed in the slots.

A disadvantage of the known devices is that they do not provide for the mechanization of the descent and ascent with the help of a turn-over of smooth, without turnkey slots, pipes in the well.

The aim of the invention is to increase the reliability of the fork with pipe turns.

This is achieved by the fact that the handle is made in the form of a shank with a bracket, moreover, the shank is connected to the body with the possibility of axial movement, and the ends of the bracket are connected to the raincoats.

FIG. I depicts the proposed fork, a general view; in fig. 2 - view along the arrow

And in FIG. 1; FIG. 3 is a section BB in FIG. one; in fig. 4 - a variant of an open fork general view.

The fork consists of a handle 1 and a housing 2 with a centering shoulder 3, a lever 4, an opening 5, inclined grooves 6 in the side walls of the opening and movably wedge-shaped raincoats 7 placed in the slots. through oval holes 9 located at the ends

0 staples (Fig. 1), or on the protrusions 10 of the dies 7 (Fig. 4), and the shank And the handle i is connected; case 2 with a pin 12 with restrictive heads 13 and 14, which makes possible the axial movement of the bracket relative to the case.

Fork, holding the shank 11 of the handle 1 with a hand, is put on the pipe string that was illuminated on the elevator and lowered it into the opening of the pipe turn. The handle 1 is lowered, and together with it the high voltage is lowered, the slide is

20 inclined grooves 6, cloaks 7, making contact with the column pipe. After releasing the brake of the winch, the column is lowered, while the cloaks 7, slipping along the inclined grooves 6, are clamped and are held in the illuminated

Claims (1)

Claim An underlay fork for smooth pipes, comprising a handle and a body with an opening, inclined grooves in the side walls of the opening and wedge-shaped dies movably placed in the grooves, characterized in that, in order to increase the reliability of its operation with pipe turns, the handle is made in the form of a shank with a bracket, moreover the shank is axially displaceable to the housing, and the ends of the bracket are connected to the dies.