SU1435751A1 - Drill pipe cap - Google Patents

Abstract

The invention relates to the drilling of wells. The purpose of the invention is to increase reliability in operation. The spring 2 mounted in the housing (K) 1 spring 2 is connected to K 1 via a spline connection 13, 14. The stem 2 clamp is made in the form of a sleeve (B) 4 installed in the upper part of the stem 2 with the possibility of rotation and interaction with K 1. A cam half coupling (W) 12, which is engaged with a response cam PM 10, installed in a fitted drill pipe 9, is rigidly connected to the rod 2. In the upper part K 1, two grooves are made at B 4, each having a different depth and angled at each other. to friend. The lower part 4 is installed in the groove K 1 of a shallow depth, while the lower end of the PM 12 is flush with the lower part of K 1. After screwing the headgear onto the tube 9, it is pulled back and turned B 4 until the lower part enters the groove of the greater depth under the action of the spring 3. At the same PM 12 is engaged with the PM 10. Then carry out the raising or lowering of the pipes 9, 5 Il. (L with: (ate SL cpu.f

Description

This invention relates to bore wells, namely, headpieces for drill pipes,

The aim of the invention is to increase the reliability of its operation.

Fig, depicts a cap, a general view; figure 2 - section aa in figure 1; figure 3 - section bb in figure 1; figure 4 - section bb In Fig, 1; figure 5 - section GG in figure 1.

The cap consists of the case I, in which the rod 2 is installed with the spring 3, the sleeve 4, the handle 5, the lever 6 and the rivet 7. In the upper part of the case, two grooves 8 are made, which have different depths and are angled to each other.

The lower part of the sleeve 4, is made in the form of a cam, fixes it relative to the body t either in one or in the other groove. Between the sleeve 4 and the housing 1 provides an annular gap. In the utmost desirable drill pipe

9Installed Cam Pile Fyfta

10 on the additional thread 1 1, which has the opposite direction to the main thread. At the lower end of the spring-loaded DJTOKa 2, there is a cam-type coupling half 12, which engages with the coupling half 10, the Schitzian connection 13, 14 is made between the stem 2 and the body 1 of the headrest. The pin connection 13, 14, as well as the knuckles 15 and 16 of the half couplings 10 and 12, allow the rotation of the spring-loaded rod 2 relative to the housing 1.

and half coupling 10 relative to semi-ft 12 at an angle of 10-15. Screwing the cap onto the drill pipe 9 or unscrewing it is carried out with a lead fork, fixing it on the flips 17.

Working with a headband consists of the following operations. Before screwing the cap onto the pipe 9, install the lower part of the sleeve 4 in the form of a cam into the groove 8 of the neck on the housing 1, using the handle 5. The lower end of the coupling half is flush with the lower part of the housing 1 of the cap (Fig.). To screw in the cap, it is installed in the bottom. on the main thread inside the pipe 9 ,, put on the flats 17 of the Veda pinching the fork ,; which gets rotated from the pipe carrier. At the end of screwing the cap on the pipe 9 at

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with

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using the handle 5, they pull out and turn the sleeve 4 until its lower part in the form of a cam enters the groove 8 of greater depth (FIG. 1) under the action of the spring 3. In this case, the cams i 6 of the coupling half 12 engage with the cams 15 coupling half 10 (figure 5). If the lower part of the sleeve 4 in the cam lobe, located above the groove of greater depth, does not sink, it means that the coupling halves 10 and 12 did not engage. To avoid this situation, it is not necessary with one hand to hold the sleeve 4 by the handle 5 in this the same position, and using the lever 6 with the other hand, turn the spring-loaded rod 2 in the sleeve 4 in one direction or the other until the lower part of the cam is completely lowered into the groove of a greater depth under the action of the spring 3. This indicates the moment of engagement of the semi-H1UPT 12 s coupling half 10, after that, it is possible to lift or lower the drill pipes with an elevator by the support, head curtain (FIG.).

To remove the headgear, it is necessary to push the spring-loaded rod 2 up by the handle 5 and turn it until the lower part of the cam-like sleeve 4 enters the groove of a smaller depth. This indicates that the coupling half 12 is out of engagement with the coupling half 10 and it is possible to unscrew the cap,

Claims (1)

Invention Formula A drillhead cap, which includes a threaded body and a spring-loaded swivel rod installed in it with a retainer, characterized in that, in order to increase the reliability of its operation, it is provided with a cam coupling half rigidly connected to the rod, and the drill pipe is fitted with a counter coupling rigidly connected to it the coupling half installed with the ability to interact with the cam half-coupling rod, the latch is made in the form of a sleeve installed in the upper part of the rod with the ability to rotate and interact with the body, I have W 1M two grooves under the sleeve, and the stem is connected to the body by means of a spline connection, and the grooves of the case have different depths and are angled 1 1 to each other. 6 s Fig.z Tszig.2 sd C) needles 5