SU1541372A1 - Device for engaging pipes - Google Patents

Abstract

The invention relates to mining, namely the installation of vertical pipelines, and can be used in the drilling of wells. The purpose of the invention is to increase the efficiency of the device by providing the ability to work with pipes having large inserts. The device includes a housing, levers with clamping elements and actuators for their movement. It is equipped with links with forks and their rotational drives, pivotally mounted on the housing with the possibility of the forks of neighboring links interacting with each other, and the levers are hingedly mounted on the links x. The links have clamping elements, the forks of the links are located above the levers. The contacting surface of the forks are made on supports, pivotally mounted on the ends of the teeth of the forks. The hinges of the supports are cylindrical, and the axes of the hinges of the supports in contact with each other are mutually perpendicular. 4 hp f-ly, 3 ill.

Description

The invention relates to mining, namely the installation of vertical pipelines, and can be used in the drilling of wells.

The purpose of the invention is to increase the efficiency of the device by providing the ability to work with pipes having large inserts.

FIG. 1 shows the device, top view; in fig. 2 is a view A of FIG. one; in fig. 3 - the interaction of forks adjacent links.

The device consists of a housing 1 with a hollow center for the passage of large cargoes, on which links 2 with hydraulic cylinders 3 are pivotally mounted.

On links x 2 there are plugs 4, at the ends of the teeth of which are mounted on hinges 5, supports 6 with surfaces on which the supports of adjacent forks 4 contact, closure of the latter into a multi-link with a hollow center inside the grip, to pass the string of columns and prevent tipping over to center of capture.

To ensure reliable contact of the surfaces of adjacent supports 6, their hinges 5 are cylindrical, the axes of which are mutually perpendicular.

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The links x 2 are pivotally mounted levers 7 with hydraulic cylinders 8 and clamping elements 9, and levers 7 have interchangeable clamping elements 10 (for several pipe sizes).

The link of the links 2 and the levers 7 with the hydraulic cylinders 3 and 8 is hinged, and the plane of their movement passes through the axis of the gripper, on which the gripping pipe is placed.

The device works as follows.

The free movement of the pipe string is carried out with diluted clamping elements 10 and collapsible adjacent supports 6. Levers 7 with clamping elements 10 are raised to grip the pipe to it.

In the case of mounting above the gripper on the column of pipes of a large-sized insert, for its further passage through the gripper, the links 2 are retracted by means of a hydraulic cylinder 3.

. When installing a pipeline with large-sized inserts, it may be necessary to grip it directly behind the insert. This possibility is realized by means of clamping elements 9 mounted on links x 2.

When gripping the pipe with clamping elements 10, the links 2 are in contact with each other by means of the supports 6 of the forks k and thus form a closed loop.

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Compiled by E.Stolbtsov Editor V.Danko Tehred M.Hodanich

Order 269

Circulation of BBE

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., D. V5

Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101

Proofreader L. Patay

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Claims (4)

2. The device according to claim 1, with the fact that the links have clamping elements. 3. The device according to claim 1, with the fact that the forks of the links are located above the levers. 4. The device according to claim 1, with the stipulation that the contacting surfaces of the forks are made on supports pivotally mounted on the ends of the teeth of the forks. 5. The device according to claim 4, characterized in that the hinges of the supports are cylindrical, and the axis of the hinges of the contacting supports are mutually perpendicular. articulated links 2 with hydraulic cylinders 3. On links 2 there are forks 4, on the ends of the teeth of which are mounted on hinges 5 supports 6 with surfaces on which the supports of adjacent forks 4 are in contact, locking the latter into a multi-link with a hollow middle inside the grip, for passing the pipe string and preventing tipping to, to the grip center . σι CO <1 To ensure reliable contact of the surfaces of adjacent supports 6, their hinges 5 are cylindrical, the axes of which are mutually perpendicular. The links 2 are pivotally mounted levers 7 with hydraulic cylinders 8 and clamping elements 9, and the levers 7 have interchangeable clamping elements 10 (for several pipe sizes). The connection of the links 2 and levers 7 with the hydraulic cylinders 3 and 8 is articulated, and the planes of their movements pass through the gripping axis on which the gripping pipe is located. The device operates as follows: in the case of mounting a large-sized insert on a pipe grip on a pipe string for its further passage through the grip, links 2 are retracted using a hydraulic cylinder 3. I. When installing a pipeline with large inserts, there may be a need 10 to grab it directly from the insert. Such an opportunity is carried out through infection. The free movement of the pipe string is carried out with the clamps 15 apart. elements 10 and reduced adjacent supports 6. To capture the pipe levers 7 are raised to it with clamping elements 10. press elements 9 mounted on links 2, When the pipes are gripped by the clamping elements 10, the links 2 are in contact with each other by means of the supports 6 of the forks 4 and form a closed loop.