Adjustable screw drill

Abstract

The utility model discloses an adjustable screw drill which comprises a first screw assembly, and the first screw assembly comprises a first screw body, a first connecting sleeve, a first connecting block, a second connecting block, a threaded hole, a groove, a spring, a ball and a limiting ring. A first connecting sleeve is fixedly connected to the bottom end of the first screw body, two first connecting blocks and two second connecting blocks are symmetrically and fixedly connected to the outer side wall of the first connecting sleeve, and threaded holes are formed in the outer side walls of the first connecting blocks and the outer side walls of the second connecting blocks. According to the screw drill, the first connecting sleeve is pushed to be inserted into the second connecting sleeve, the first connecting sleeve and the second connecting sleeve are fixed together through the fixing bolts, the first screw assemblies and the second screw assemblies are assembled, the first screw assemblies can be flexibly assembled according to needs, the length of the screw drill is rapidly adjusted, and the screw drill is convenient to use. The screw drill can meet the application requirements in different drilling scenes, and the drilling quality is improved.

Description

Technical field:

[0001] The utility model relates to a screw drill, in particular to an adjustable screw drill, and belongs to the technical field of screw drills. Background technology:

[0002] Screw drilling tools are a type of volumetric downhole power drilling tools that use drilling fluid as a power source to convert liquid pressure energy into mechanical energy. When the mud pumped out by the mud pump flows through the bypass valve into the motor, a certain pressure difference is formed at the inlet and outlet of the motor, which drives the rotor to rotate around the axis of the stator, and transmits the speed and torque to the drill bit through the universal shaft and the transmission shaft, thereby realizing the drilling operation. Screw drilling tools have many advantages, such as low speed, high torque, large displacement, etc., which makes it widely used in drilling and well repair engineering construction such as vertical wells, directional wells, horizontal wells, window sidetracking, and well repair.

[0003] Existing screw drill tools usually have a fixed length, which to a certain extent limits their application in different drilling scenarios. In some specific cases, such as when drilling deeper or shallower wells, or when operating in a narrow space, fixed-length screw drill tools may not meet actual needs and affect the drilling quality. Therefore, an adjustable screw drill tool is proposed. Utility model content:

[0004] The utility model aims to provide an adjustable screw drill to solve one of the problems raised in the above background technology.

[0005] The utility model is implemented by the following technical solutions: an adjustable screw drill, comprising a first screw assembly, wherein the first screw assembly comprises a first screw body, a first connecting sleeve, a first connecting block, a second connecting block, a threaded hole, a groove, a spring, a ball and a limit ring;

[0006] The bottom end of the first screw body is fixedly connected with a first connecting sleeve, and the outer side wall of the first connecting sleeve is symmetrically fixedly connected with two first connecting blocks and a second connecting block, the outer side walls of the first connecting block and the second connecting block are both provided with threaded holes, one end of the threaded hole passes through the inner side wall of the first connecting sleeve, the inner side wall of the first connecting block is provided with a groove, the inner side wall of the groove is fixedly connected with a spring, one end of the spring is provided with a ball, the inner side wall of the groove is fixedly connected with a limiting ring, and the limiting ring is provided on one side of the ball.

[0007] As a further preferred embodiment of the technical solution: a second screw assembly is provided at the bottom of the first screw assembly, and the second screw assembly includes a second screw body, a drill bit and a second connecting sleeve;

[0008] A drill bit is installed at the bottom of the second screw body, and a second connecting sleeve is fixedly connected to the top of the second screw body.

[0009] As a further preferred embodiment of the present technical solution: the second connecting sleeve is arranged on the outer side wall of the first connecting sleeve.

[0010] As a further preferred embodiment of the present technical solution: a first connecting groove and a second connecting groove are symmetrically formed on the inner side wall of the second connecting sleeve.

[0011] As a further preferred embodiment of the present technical solution: the first connecting block and the second connecting block are respectively arranged inside the first connecting groove and the second connecting groove.

[0012] As a further preferred embodiment of the present technical solution: a first through hole is formed on the inner side walls of the first connecting groove and the second connecting groove.

[0013] As a further preferred embodiment of the technical solution: a fixing bolt is arranged inside the first through hole, and the fixing bolt is threadedly connected to the inside of the threaded hole.

[0014] As a further preferred embodiment of the present technical solution: a second through hole is provided on the inner side wall of the first connecting groove.

[0015] Advantages of the utility model: The utility model completes the assembly between the first screw assembly and the second screw assembly by pushing the first connecting sleeve into the second connecting sleeve and fixing the first connecting sleeve and the second connecting sleeve together by a fixing bolt. Multiple first screw assemblies can be flexibly assembled as needed, and the length of the screw drill bit can be quickly adjusted, so that the screw drill bit can meet the application requirements in different drilling scenarios and improve the drilling quality. Description of the drawings:

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first connecting sleeve of the utility model;

[0020] Figure 4It is a schematic diagram of the enlarged structure of point A of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the second connecting sleeve of the utility model.

[0022] In the figure: 10, first screw assembly; 11, first screw body; 12, first connecting sleeve; 13, first connecting block; 14, second connecting block; 15, threaded hole; 16, groove; 17, spring; 18, ball; 19, limit ring; 20, second screw assembly; 21, second screw body; 22, drill bit; 23, second connecting sleeve; 24, first connecting groove; 25, second connecting groove; 26, first through hole; 27, fixing bolt; 28, second through hole. Specific implementation method:

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] See also Figure 1-5 The utility model provides a technical solution: an adjustable screw drill, comprising a first screw assembly 10, the first screw assembly 10 comprising a first screw body 11, a first connecting sleeve 12, a first connecting block 13, a second connecting block 14, a threaded hole 15, a groove 16, a spring 17, a ball 18 and a limit ring 19;

[0026] The bottom end of the first screw body 11 is fixedly connected with a first connecting sleeve 12, and the outer wall of the first connecting sleeve 12 is symmetrically fixedly connected with two first connecting blocks 13 and a second connecting block 14, and the outer walls of the first connecting block 13 and the second connecting block 14 are both provided with threaded holes 15, and one end of the threaded hole 15 passes through the inner wall of the first connecting sleeve 12, and the inner wall of the first connecting block 13 is provided with a groove 16, and the inner wall of the groove 16 is fixedly connected with a spring 17, and a ball 18 is arranged at one end of the spring 17, and the inner wall of the groove 16 is fixedly connected with a limit ring 19, and the limit ring 19 is arranged on one side of the ball 18. By pushing the first connecting sleeve 12 to insert into the second connecting sleeve 23, the first connecting sleeve 12 and the second connecting sleeve 23 are fixed together by fixing bolts 27, and the length of the screw drilling tool is adjusted, so that the screw drilling tool can meet the application requirements in different drilling scenarios and improve the drilling quality.

[0027] In this embodiment, specifically: a second screw assembly 20 is disposed at the bottom of the first screw assembly 10, and the second screw assembly 20 includes a second screw body 21, a drill bit 22 and a second connecting sleeve 23;

[0028] A drill bit 22 is installed at the bottom of the second screw body 21 , and a second connecting sleeve 23 is fixedly connected to the top of the second screw body 21 .

[0029] In this embodiment, specifically: the second connecting sleeve 23 is arranged on the outer wall of the first connecting sleeve 12. Since the first connecting sleeve 12 is arranged at the bottom of the first screw assembly 10 and the second connecting sleeve 23 is arranged at the top, multiple first screw assemblies 10 can be flexibly assembled as needed.

[0030] In this embodiment, specifically: the inner side wall of the second connecting sleeve 23 is symmetrically provided with a first connecting groove 24 and a second connecting groove 25 .

[0031] In this embodiment, specifically: the first connecting block 13 and the second connecting block 14 are respectively disposed inside the first connecting groove 24 and the second connecting groove 25 .

[0032] In this embodiment, specifically: the inner side walls of the first connecting groove 24 and the second connecting groove 25 are provided with a first through hole 26, and during the installation process, the first connecting block 13 and the second connecting block 14 are aligned with the first connecting groove 24 and the second connecting groove 25 to play a guiding role.

[0033] In this embodiment, specifically: a fixing bolt 27 is disposed inside the first through hole 26 , and the fixing bolt 27 is threadedly connected to the inside of the threaded hole 15 , and the first connecting sleeve 12 and the second connecting sleeve 23 are fixed together by the fixing bolt 27 .

[0034] In this embodiment, specifically: the inner side wall of the first connecting groove 24 is provided with a second through hole 28 , and when the first connecting sleeve 12 is in place, the ball 18 enters the second through hole 28 under the action of the spring 17 .

[0035] Working principle or structural principle: When in use, the first connecting sleeve 12 is pushed to insert into the second connecting sleeve 23. During the insertion process, the first connecting block 13 and the second connecting block 14 are aligned with the first connecting groove 24 and the second connecting groove 25 to play a guiding role. When the first connecting sleeve 12 is in place, under the action of the spring 17, the ball 18 enters the second through hole 28, indicating that the threaded hole 15 is aligned with the first through hole 26. The first connecting sleeve 12 and the second connecting sleeve 23 are fixed together by the fixing bolt 27 to complete the assembly between the first screw assembly 10 and the second screw assembly 20. Since the first screw assembly 10 is provided with the first connecting sleeve 12 at the bottom and the second connecting sleeve 23 at the top, multiple first screw assemblies 10 can be flexibly assembled as needed, and the length of the screw drill bit can be quickly adjusted, so that the screw drill bit can meet the application requirements in different drilling scenarios and improve the drilling quality.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable screw drill, comprising a first screw assembly (10), characterized in that: The first screw assembly (10) comprises a first screw body (11), a first connecting sleeve (12), a first connecting block (13), a second connecting block (14), a threaded hole (15), a groove (16), a spring (17), a ball (18) and a limiting ring (19); The bottom end of the first screw body (11) is fixedly connected to a first connecting sleeve (12); the outer side wall of the first connecting sleeve (12) is symmetrically fixedly connected to two first connecting blocks (13) and a second connecting block (14); the outer side walls of the first connecting block (13) and the second connecting block (14) are both provided with threaded holes (15); one end of the threaded hole (15) passes through the inner side wall of the first connecting sleeve (12); the inner side wall of the first connecting block (13) is provided with a groove (16); the inner side wall of the groove (16) is fixedly connected to a spring (17); one end of the spring (17) is provided with a ball (18); the inner side wall of the groove (16) is fixedly connected to a limit ring (19); the limit ring (19) is provided on one side of the ball (18).

2. The adjustable screw drill according to claim 1, characterized in that: A second screw assembly (20) is arranged at the bottom of the first screw assembly (10), and the second screw assembly (20) comprises a second screw body (21), a drill bit (22) and a second connecting sleeve (23); A drill bit (22) is installed at the bottom of the second screw body (21), and a second connecting sleeve (23) is fixedly connected to the top of the second screw body (21).

3. The adjustable screw drill according to claim 2, characterized in that: The second connecting sleeve (23) is arranged on the outer side wall of the first connecting sleeve (12).

4. The adjustable screw drill according to claim 3, characterized in that: The inner side wall of the second connecting sleeve (23) is symmetrically provided with a first connecting groove (24) and a second connecting groove (25).

5. The adjustable screw drill according to claim 4, characterized in that: The first connection block (13) and the second connection block (14) are respectively arranged inside the first connection groove (24) and the second connection groove (25).

6. The adjustable screw drill according to claim 5, characterized in that: The inner side walls of the first connecting groove (24) and the second connecting groove (25) are provided with first through holes (26).

7. The adjustable screw drill according to claim 6, characterized in that: A fixing bolt (27) is disposed inside the first through hole (26), and the fixing bolt (27) is threadedly connected to the inside of the threaded hole (15).

8. The adjustable screw drill according to claim 6, characterized in that: The inner side wall of the first connecting groove (24) is provided with a second through hole (28).

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