UA9621U - Lock joint of screw sections of drill mill - Google Patents

Abstract

Lock joint of screw sections of drill mill has at the end of one section a tail element with circular reboring, and at the end of neighboring section a bushing clutch with axial opening corresponding to the tail element, with inner circular reboring and radial openings. In the circular reboring of the clutch locking elements are placed, as spring-supported circular sectors. In the radial openings of the clutch support bodies are placed, those are connected to placed in radial positions directing axles connected with the inner ends to the locking elements. Each support body is arranged as a bushing. Each directing axle is rigidly connected to respective locking element. Each of unlocking elements is arranged as a body part in mushroom-like shape, with outer circular reboring and inner cavity. The outer end of the directing axle is placed in the inner cavity of the unlocking element.

Description

Description of the invention

The useful model relates to the mining industry, in particular, the lock joints of the screw sections of the 2nd drilling post (auth. of the USSR Mo 279516, class E?2iv 17/02, publ. 26.08.1970), which contains a shank at the end of one section with an annular groove and at the end of the adjacent section - a sleeve coupling with an axial hole corresponding to the shank, an internal annular groove and radial holes. Closing elements in the form of sprung ring sectors are placed in the ring groove of the clutch, movably installed with the possibility of interaction with the opening elements. The opening elements are formed by a hug with protrusions and two-armed 70 levers. Two-armed levers with axes on which they rotate and sector axes are installed in the radial holes of the clutch. Springs and cups are located in the liners installed on the outer surface of the clutch.

The main disadvantage of the known lock connection is the low reliability of the connection of adjacent sections of the drilling rig due to the presence of elements that protrude beyond the coupling body, which leads to their deformation and breakage when interacting with the transported material. In addition, jamming of the elements 72 of the locking connection may occur, in particular, due to the unfixed position of the clip, which causes spontaneous disconnection when pulling the sections out of the well. The disadvantage is also the complexity of the design of the lock connection.

The closest analogue of the claimed useful model is the locking connection of the screw sections of the drilling rig (Ukrainian patent Mo 53722, class E218В17/046, publ. 02/17/2003), which contains at the end of one section a shank with an annular groove and at the end of the adjacent section - a sleeve coupling with an axial hole corresponding to the shank, an internal annular groove and radial holes. Closing elements in the form of spring-loaded ring sectors are placed in the ring groove of the clutch, movably installed with the possibility of interaction with opening elements. In the radial holes of the clutch, support housings are fixed, connected to radially located guide axes, which are connected by their inner ends to locking elements. The opening elements are placed in the ring groove of the clutch and are made in the form of spring-loaded ring sectors, 22 mounted movably. At the same time, they are connected to pushers located movably in the corresponding radial holes of the clutch body. Closing and opening elements are located diametrically in pairs with the possibility of interaction with each other by radial surfaces. Each support body is made as one unit with a corresponding guide axis. The closing elements are movably installed relative to the guide axes with the possibility of movement in the radial direction. --

The known lock connection has a number of disadvantages. As a result of the intrusion of minerals and rock into the gaps Ha between the walls of the radial holes of the coupling and the side surfaces of the pushers of the ring sections of the opening elements movably installed in these holes, jamming of the pushers in the radial holes of the coupling may occur, as a result of which the depth of insulation decreases when connecting adjacent screw sections ring sectors Ge") of closing elements in the inner ring groove of the coupling and they do not reach the inner diameter of the groove of the shank. This leads to a decrease in the surface area of coupling of the coupling with the shank in the radial direction, which reduces the reliability of the connection of sections. For this reason, during the reverse movement of the auger assembly, which occurs during the extraction of the auger assembly from the well, spontaneous disconnection of the auger assembly may occur. In addition, when the pushers repeatedly run into the rock, their 8 insulation may occur in the radial holes of the coupling, which can also lead to disconnection of the screw position during its return stroke. The above-considered shortcomings of the design of the known lock connection cause a decrease in labor productivity during the extraction of minerals due to the self-disengagement of the screw sections from the drilling position.

The basis of the useful model is the task of creating a locking connection of the screw sections of the drilling rig, in which the reliability of the connection of the screw sections is increased due to the new design of the support housings and opening elements and the new form of interconnection of the guide axes with the locking elements and support housings drilling posture by reducing environmental impact

Ge") during the extraction of minerals and by simplifying the design of the lock connection.

The locking connection of the screw sections of the drilling setup, which is claimed, like the closest analogue, contains at the end of one section a shank with an annular groove and at the end of the adjacent section - a sleeve coupling with an axial hole corresponding to the shank, an internal annular groove and radial holes . Locking elements in the form of spring-loaded sectors are placed in the ring groove of the clutch. These closing elements are installed movably with the possibility of interaction with the opening elements. Support housings are fixed in the radial holes of the clutch. The support housings are connected to radially located guide axes, which are connected by their inner ends to locking elements. What is new about the lock joint, according to the utility model, is that each

SS o5 support body is made in the form of a sleeve, each guide axis is rigidly connected to the corresponding locking element and installed in the axial opening of the support body with the possibility of movement in the radial direction, and each of the opening elements is made in the form of a mushroom-shaped body part with an external annular groove and the inner cavity and fixed with the possibility of removal on the outer end of the guide axis from the outside of the clutch in tight contact with the support body, and the outer end 60 of the guide axis is placed in the inner cavity of the opening element.

The new design of the support housings, the new form of their relationship with the guide axes and the new form of the relationship of the guide axes with the locking elements makes it possible to simplify the construction of the lock connection by eliminating the nodes with the opening elements and the radial holes in the housing that are separately located in the clutch housing couplings for these nodes. At the same time, it becomes possible to implement the disconnection function in each of the nodes because the closing - opening function is done using one continuous body part that directly interacts with the guide axis rigidly connected to the closing element. That is, the number of nodes required to perform connection and disconnection operations is reduced by two times, and the number of elements is reduced accordingly. The guide axes additionally perform the function of the rods of the locking elements during the disconnection of the locking connection. And the opening elements additionally perform the function of fixing the radial position of the closing elements in the working position of the lock connection.

The shape of the disconnecting elements and their location relative to the guide axes and support housings provide the possibility of performing the function of disconnection and at the same time prevent the penetration of the headquarters of minerals and rock into the radial holes of the coupling, namely into the axial holes of the support housings, into the gaps between the walls of the axial /o holes of fixed support housings and side surfaces of movable guide axes. Due to the close fit of the opening elements to the surface of the support housings in the working position of the lock connection and due to the placement of the outer ends of the guide axes inside the opening elements from the outside of the coupling, the gaps in the axial openings of the support housings are isolated from the environment, that is, they are protected from the penetration of the headquarters. The proposed shape and location of the disconnecting elements prevent them from drowning in the axial /5 holes of the support bodies under the action of the oncoming rock, since their transverse size is larger than the diameter of the axial holes of the support bodies. The proposed design of the lock connection is characterized by the fact that the repeated running of pieces of minerals contributes to the constant pressing of the locking elements to the groove of the shank. The mushroom-shaped shape of the disconnecting elements prevents their mechanical damage and the accumulation of staff on their surfaces. 20 Thus, due to the elimination of the possibility of jamming of the movable elements of the lock connection under the action of the pin during operation and due to the simplification of the design, an increase in the reliability of the lock connection is ensured.

The essence of the useful model is explained by the drawings, where: Fig. 1 shows the locking connection of the screw sections of the drilling rig, general view; 25 in Fig. 2 - a section along A - A in Fig. 1 (closed position of the lock connection); in Fig. 3 - a section along B - B in Fig. 1 (open position of the lock connection); t in Fig. 4 - section B - B in Fig. 1.

The locking connection 1 of the screw sections 2, from the drilling position (Fig. 1) contains a sleeve coupling 4 and a shank 5 with an additional coupling 6 located at the ends of these sections. The shank 5 is made with an annular groove 7 and a bevel 8 .

The sleeve coupling 4 is made with an axial hole 9 corresponding to the shank 5, an internal ring with a groove 10 and two diametrically opposed radial holes 11. In the annular groove He of the coupling 4, two locking elements 12 are located diametrically opposite each other, each of which is made in the form of a spring-loaded ring sector, with bevel 13 and radial hole 14. me)

The closing elements 12 are movably installed with the possibility of interaction with two opening elements 15.

In each radial opening 11 of the clutch 4, a support body 16, made in the form of a sleeve, is immovably installed. The support housing 16 is fixed to the clutch housing 4 with a retaining ring 17.

Each support body 16 is movably connected to a radially located guide axis 18. The guide axis 18 is installed in the axial hole 19 of the support body 16 with the possibility of movement in the radial direction and

It is rigidly connected, namely welded, by its inner end 20 to the corresponding locking element 12. Each locking element 12 is equipped with a compression spring 21 located between the locking element 12 and the support body 16 around the guide axis 18. Each of the opening elements 15 is made in the form of a body part of a mushroom shape with an external annular groove 22 and an internal cavity and is fixed with the help of an internal latch with which it is equipped and a locking screw 23 on the threaded external end 24 of the guide axis 18 from the outside of the coupling 4 with

Ge) with the possibility of removal, while the outer end 24 of the guide axis 18 is placed in the inner cavity of the opening element 15. In the working position of the lock connection 1, each opening element 15

Me, its base 25 tightly adheres to the outer surface of the corresponding support housing 16. The locking connection 1 works as follows.

When connecting the screw sections 2, Z from the drilling position, the shank 5 of the coupling 6 of the section C is inserted into the axial hole 9 of the coupling 4 of the section 2. The shank 5 interacts with the bevel 8 of the bevel 13 of the closing elements 12, pushing them apart in the radial direction along the guide axes 18. At the same time, the springs 21 are compressed.

When the annular groove 7 of the shank 5 of the coupling b and the inner annular groove 10 of the coupling 4 are connected, the closing elements 12 enter the annular groove 7 of the shank 5. Thus, automatic

Gan connection of two adjacent screw sections 2, From the drilling position.

Thus, during the operation of connecting sections 2, from the drilling position, the locking elements 12 first move away from the center of the locking connection 1, and then approach it. At the same time, the guide axis 18 of each closing element 12, thanks to the rigid fastening of its inner end 20 and its installation in the radial opening 14 of the closing element 12, makes a reciprocating movement in the radial direction in the axial opening 19 of the support body 16.

Fixation of the radial position of the closing elements 12 is carried out by winding the opening elements 15 on the outer ends of the guide axes 18. Each opening element 15 is gradually moved along the threaded outer end 24 of the guide axis 18 until it is tightly pressed by its base 25 to the outer surface of the support body 16. Then the threaded the connection is locked by the screw 23. Tightly pressing 65 of the opening elements 15 to the surface of the support housings 16 and placing the outer ends 24 of the guide axes 18 from the outside of the coupling 4 inside the opening elements prevents the penetration of the headquarters of minerals and rock into the radial axial holes 19 of the support housings 16, namely in the gaps between the walls of these holes and the side surfaces of the movable guide axes 18, which significantly reduces the possibility of jamming of the movable elements of the locking mechanism. The penetration of the pin through the radial holes 11 in the housing of the coupling 4 into the internal annular groove 10 of this coupling and further to the moving elements - the closing elements 12 and the guide axes 18 are prevented by the support housings 16 and support rings 17, with the help of which the support housings 16 are fixed to the housing of the coupling 4 .

Disconnection of lock connection 1 is carried out as follows.

A force P is applied to the opening elements 15 through their annular grooves 22 in the radial direction outwards. Under the action of this force, the opening elements 15 move together with the 7/0 guide axes 18 and closing elements 12 immovably connected to them. With the help of the opening elements 15, overcoming the resistance compression springs 21, remove the closing elements 12 from the ring

This achieves the separation of adjacent screw sections 2, From the drilling position.

The proposed constructive implementation of the locking connection of the screw sections of the drilling rig, described above, makes it possible to increase the reliability of the connection of adjacent screw sections both during operation and during /5 Pulling them out of the well by preventing jamming of moving elements under the action of the staff and by simplification of the design of the lock connection.

Claims (1)

The formula of the invention, that, oh, p. Shchi Locking connection of screw sections of the drilling setup, containing at the end of one section a shank with an annular groove and at the end of the adjacent section a sleeve coupling with an axial hole corresponding to the shank, an internal annular groove and radial holes, and in the annular groove of the coupling there are locking elements in the form of spring-loaded ring sectors, movably installed with the possibility of interaction with the closing elements, and in the radial holes of the clutch, support bodies are fixed, connected to radially located guide axes, which are connected by their inner ends to the closing elements - which is distinguished by the fact that each support the body is made in the form of a sleeve, each guide axis is rigidly connected to the corresponding locking element and is installed in the axial hole of the support body with the possibility of movement in the radial direction, and each of the opening elements is made in the form of a body part "from a mushroom shape with an external annular groove and internal p with a groove and fixed with the possibility of removal on the outer end of the guide axis from the outside of the clutch in close contact with the support body, and c the outer end of the guide axis is placed in the inner cavity of the opening element. co (o) . and? se) (o) ime) . 70 So 60 b5