SU1430497A1 - Pipe-engaging mechanism - Google Patents

Description

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: 3. The force of the spring 8 is equal to the mass of part 3. The mechanism is brought into contact with the pipe 10 and after it is gripped together with K 4, part 3 is moved upwards to transfer the pipe 10 from the center of the well to the candlestick. The wedge with dies 5 and system 6 are held relative to K 4 in the position of holding the pipe 10 only after supporting its lower end on the candlestick. Together with wedges and plugs 5 K 4, under the action of the spring 8, rotates relative to the system 6, the exit from the contact with the pipe 10, 3 sludge.

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; The invention relates to the drilling of wells, namely to mechanisms for seizing pipes.

The aim of the invention is to increase the reliability of the gripping mechanism of pipes by increasing the range of the length of movement of the pipes during descent and below the level from which they are taken.

FIG. 1 shows the capture mechanism. that pipes in the initial position, the overall appearance; in fig. 2 - the same, when moving with a pipe; in fig. 3 - the same, when lowering the pipe below the level from which it was taken.

The pipe gripping mechanism consists of a fixed part 1 fixed on the boom 2 of the manipulator, movable: part 3, including case 4, wedge I With dies 5 and lever system 6, support 7 installed on the forward part-: NOY part 1, spring 8 and drive 9.

The mechanism works as follows.

In the initial position, the locking mechanism is brought to the pipe 10 on. Stre- | Le 2 manipula torus before the approach of the pipe. : 10 into the body shed 4. In this case, the movable part 3 of the locking mechanism rests on a spring-loaded support 7 mounted on the fixed part 1 of the locking mechanism. The spring force 8 of the support 7 in the initial position is chosen equal to the weight of the movable part 3 of the gripping mechanism (Fig. 1). Under the action of the actuator 9 of the movable part 3, the wedge with the dies 5 is brought into contact with the pipe 10 by means of the lever system 6, and after its capture together with the body 4, the entire movable part 3 moves upwards (Fig. 2) to transfer the pipe from the center of the well on the candlestick. When installing pipe 10 on a candlestick in the case that the candlestick level is located below the level of the pipe column connector; the movable part 3 of the gripper together with the pipe 10 is supported on the support 7, which together with the movable part 3 and the pipe 10 moves downward, squeezing the spring 8 until the lower end of the pipe 10 stands on the candlestick (FIG. 3). As a result, a wedge t with dies 5 and a snarl on system 6 is held relative to body 4 in the position of holding the pipe 10. only after supporting the lower end of pipe 10 on the candlestick.

Copus 4 together with wedges and shawls 5 under the action of the spring 8 rotates relative to the lever system 6, the exit from contact with the pipe

ten.;

Claims (1)

Invention Formula The gripping mechanism of pipes, including a fixed part rigidly connected to the boom arm, and a movable part with a drive for its movement and a body mounted on it with wedges, dies and a lever system, characterized in that, in order to improve the reliability of the mechanism, it is equipped spring support mounted on the fixed part of the gripping mechanism with the possibility of interaction with the movable part of the gripper, and the force of the spring of the support is equal to the weight of the movable part. fcg2 Editor A.Dolinich Compiled by M. Yuriev Tehred A. Kravchuk Proofreader M. Maksimishinets