SU1562421A2 - Arrangement for stacking and feeding pipes into borehole in running and pulling operations - Google Patents

Abstract

The invention relates to the mining industry. The goal is to expand technological capabilities by providing longitudinal movement of the grippers. The device includes a base, transverse guides, a carriage with a drive and a swivel boom 1 with grippers 2, a turn actuator. On the swivel boom 1, the slide bearing 6, the switching sleeve 12, the threaded sleeve 17, the nut 19, the rod 22 and the actuator 9 of the grips are mounted. A movable carriage with a swivel boom 1 is driven by a drive along the guides to the pipe being gripped and, after being gripped, it returns to the axis of the well. The actuator 9 through the clutch 12 rotates the rod 22 and turns the swivel boom 1 with grippers 2 180 °, then the actuator turns the swivel boom 1 to a vertical position. After the pipe is intercepted by the tripping mechanisms, the boom 1 is lowered into a horizontal position. If it is necessary to move the grippers 2 with the pipe along the swing arm 1, the clutch 12 is switched to another position. The actuator 9 rotates the threaded sleeve 17, which by means of the fixed nut 19 moves the sliding bearing 6 with the grippers 2 and the pipe along the swivel boom 1. 2 Il.

Description

1

On the swivel boom 1 mounted sliding bearing 6, the clutch 12 is re; key, threaded sleeve 17, nut 19, rod 22 and the actuator 9 of the rotation of the clamps. A movable carriage with a swivel boom 1 is driven by a drive along the guides to the pipe being gripped and, after being gripped, it returns to the axis of the well. The actuator 9 through the clutch 12 rotates the rod 22 and rotates the swivel boom 1 with grippers 2 by 180 °, then the turn actuator lifting the swivel boom 1 into

vertical position. After the pipe is intercepted by the tripping mechanisms, the boom 1 is lowered into a horizontal position. If it is necessary to move the grippers 2 with the pipe along the swivel boom 1, the clutch 12 is switched to another position. The actuator 9 rotates the threaded sleeve 17, which by means of the fixed nut 19 moves the sliding bearing 6 with the grippers 2 and the pipe (along the swivel boom 1. 2 Il.

The invention relates to the mining industry, in particular, to devices for laying and feeding pipes during tripping operations in the process of drilling or repairing oil and gas wells, and is an improvement to the device according to Aut. St. No. 941539.

The purpose of the invention is the expansion of technological capabilities by providing longitudinal movement of the grippers.

FIG. 1 shows the mechanism for rotating and moving the grippers; in fig. 2 - a nut with stoppers.

The device comprises a base with transverse guides, a movable carriage with a drive in the form of a screw feeder, articulated with a swivel boom 1 with grippers 2 and a rotation drive.

The mechanism of rotation of the claws contains gear 3, stops 4 and 5, a sliding support 6 and supports 7 and 8. The drive 9 of the rotation of the clamps with a splined coupling 10 is mounted on the support 8. The splined coupling 10 interacts with the splines 11 of the clutch 12 equipped with splines 13 and 14. Coupling 12 is connected to fork 15 by cylinder 16. Threaded sleeve 17 is fixed on support 7 by means of stops 18 and interacts with a nut 19, which is fixed by means of stoppers 20 in housing 215 mounted on a sliding support 6. Inside the threaded sleeve 17 there is a stem 22 provided with slots 23 and gear 24 housed in housing 25 and associated with gear 3.1.

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The device works as follows.

The feed mechanism moves the movable carriage with a swivel boom 1 along transverse guides to the pipe axis. Then the grippers seize the pipe and lift it above the rack. The feed mechanism is activated in the opposite direction and moves the movable carriage with the swivel boom 1 to the axis of the well, after which the feed mechanism is turned off. The pipe clamps are rotated 180 from the lower position to the upper position. The rotation drive rotates the pivot boom 1 to a vertical position in which the pipe is intercepted by the trigger-lift mechanisms. After the pipe is released, the rotational drive rotates the pivot boom 1 to a horizontal position.

When pipes are placed on racks, operations are performed in reverse order.

If it is necessary to move the grippers 2 with the pipe along the swivel boom 1, the cylinder 16 with the fork 15 sets the coupling 12 to the upper position. In this case, the splines 11 are engaged with the splined coupling 10, the splines 13 come out of the engagement with the splines 23, and the splines 14 engage with the splines of the threaded sleeve 17. The drive 9 is turned on, which through the splined coupling 10 through the splines 14 of the splined coupling 12 transmits the rotation to the threaded bushing 17. A threaded bushing (the bushing 17 rotates in the support 7 and is restricted from moving along the swivel boom 1

Claims (1)

Claim A device for laying and supplying pipes into the well during the descent ascent according to ed. St. No. 941539, characterized in that, in order to expand technological capabilities by ensuring the longitudinal movement of the grippers, it is equipped with a sliding support, a shift clutch, a threaded sleeve, a nut and a drive for turning the grippers with a U spline coupling, and the sliding support is mounted on the rotary boom with the possibility of turning around the axis of the pivot boom and moving along the pivot boom, 20 grips are mounted on a sliding one. the support, the switching clutch is located on the spline coupling of the gripper turning drive with the possibility of connecting with the threaded sleeve when moving to its extreme upper position25, while the threaded sleeve is mounted to rotate around its axis in the nut fixedly mounted on the sliding support, and. 30 limited from movement along the pivot boom. Figure 2