Novel screw drill

Abstract

The utility model discloses a novel screw drill which comprises a main body assembly, and the main body assembly comprises a cylindrical rotating rod, a main shaft, a cylindrical screw, an external spline, an internal spline, a cylindrical nut, a first bearing, a mounting seat, a hexagonal prism and a drill bit. The main shaft is driven by the cylindrical rotating rod to rotate, so that the cylindrical screw rod is driven to rotate, the cylindrical nut moves in the axial direction of the cylindrical screw rod, the cylindrical nut moves in the axial direction and is transmitted to the drill bit, the drill bit is driven to conduct drilling operation, meanwhile, the cylindrical nut moves along the threads of the cylindrical screw rod, and the drill bit is driven to conduct drilling operation. The movement can be converted into the rotating movement of the drill bit, the rotation of the drill bit is influenced by the counter-acting force of a drilling medium, the counter-acting force can promote the drill bit to rotate to conduct drilling operation, then stable and efficient conversion from rotating power to axial thrust is achieved, stable drilling operation is guaranteed, and the drilling efficiency is improved. And the efficiency of drilling operation is improved.

Description

Technical field:

[0001] The utility model relates to the technical field of screw drill tools, in particular to a novel screw drill tool. Background technology:

[0002] Screw drilling tools are a type of volumetric downhole power drilling tools that use drilling fluid as a driving force and 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. In the petroleum, geological exploration, construction and other industries, screw drilling tools are widely used as an important drilling tool.

[0003] Existing screw drills often directly drive the drill bit to rotate through the main shaft and cannot provide axial thrust. Especially when facing harder drilling media, existing drilling equipment is difficult to provide sufficient rotational power for drilling, thereby affecting the drilling effect and reducing the efficiency of the drilling operation. Therefore, a new type of screw drill is proposed. Utility model content:

[0004] The purpose of the utility model is to provide a new type of screw drill to solve one of the problems raised in the above background technology.

[0005] The utility model is implemented by the following technical scheme: a new type of screw drill, including a main body component, the main body component includes a cylindrical rotating rod, a main shaft, a cylindrical screw, an external spline, an internal spline, a cylindrical nut, a first bearing, a mounting seat, a hexagonal prism, a connecting tube and a drill bit, the inner top wall of the cylindrical rotating rod is welded with the main shaft, the outer side wall of the main shaft is sleeved with a cylindrical screw, the outer side wall of the main shaft is fixedly connected with the external spline, the inner side wall of the cylindrical screw is fixedly connected with the internal spline, the outer side wall of the external spline is fixedly connected to the inner side wall of the internal spline, the outer side wall of the cylindrical screw is threadedly connected with a cylindrical nut, the outer side wall bottom of the cylindrical nut is fixedly connected with the first bearing, the outer side wall of the first bearing is fixedly connected with the mounting seat, the bottom of the mounting seat is fixedly connected with the hexagonal prism, the outer side wall of the hexagonal prism is slidably connected with the connecting tube, and the lower surface of the connecting tube is welded with a drill bit.

[0006] As a further preferred embodiment of the present technical solution: pin holes are provided on both sides of the outer wall of the connecting tube, threaded holes are provided on both sides of the outer wall of the hexagonal prism, the inner walls of the two pin holes are slidably connected with limit screws, and the ends of the outer walls of the two limit screws that are close to each other are respectively threadedly connected to the inner walls of the two threaded holes.

[0007] As a further preferred embodiment of the present technical solution: a second bearing is fixedly connected to the upper portion of the outer wall of the cylindrical nut, an upper limit ring is fixedly connected to the outer wall of the second bearing, and the outer wall of the upper limit ring is slidably connected to the inner wall of the cylindrical rotating rod.

[0008] As a further preferred embodiment of the present technical solution: the outer side wall of the mounting seat is slidably connected to the bottom of the inner side wall of the cylindrical rotating rod.

[0009] As a further preferred embodiment of the present technical solution: a lower limit ring is fixedly connected to the inner side wall of the cylindrical rotating rod near the upper portion of the mounting seat.

[0010] As a further preferred embodiment of the present technical solution: the upper surface and the lower surface of the upper limit ring are fixedly connected with a first sealing ring, and the inner side walls of the two first sealing rings are rotatably connected to the outer side wall of the cylindrical nut close to the upper and lower parts of the second bearing.

[0011] As a further preferred embodiment of the technical solution: a second sealing ring is fixedly connected to the upper surface of the mounting seat, and an inner side wall of the second sealing ring is rotatably connected to an outer side wall of the cylindrical nut close to an upper portion of the first bearing.

[0012] As a further preferred embodiment of the present technical solution: a driving connecting rod is welded at the center of the upper surface of the cylindrical rotating rod.

[0013] Advantages of the utility model: the utility model drives the main shaft to rotate through the cylindrical rotating rod, thereby driving the cylindrical screw to rotate, and then the cylindrical nut moves in the axial direction of the cylindrical screw, and the axial movement of the cylindrical nut is transmitted to the drill bit, thereby driving the drill bit to perform drilling operations. At the same time, the cylindrical nut moves along the thread of the cylindrical screw, and this movement will be converted into rotational motion of the drill bit. Moreover, the rotation of the drill bit is also affected by the reaction force of the drilling medium, and this reaction force will also prompt the drill bit to rotate for drilling operations, thereby realizing a smooth and efficient conversion of rotational power to axial thrust, ensuring the stable progress of the drilling operation, and improving the efficiency of the drilling operation. Description of the drawings:

[0014] 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.

[0015] Figure 1 It is a structural schematic diagram of one viewing angle of the utility model;

[0016] Figure 2It is a schematic diagram of the structure of the barrel screw and barrel nut of the utility model;

[0017] Figure 3 It is a schematic diagram of the cutaway structure of the cylindrical rotating rod and the main shaft of the utility model;

[0018] Figure 4 For the utility model Figure 3 Magnified view of area A.

[0019] In the figure: 1. main body assembly; 11. cylindrical rotating rod; 12. main shaft; 13. cylindrical screw; 14. external spline; 15. internal spline; 16. cylindrical nut; 17. first bearing; 18. mounting seat; 19. hexagonal prism; 20. connecting tube; 21. drill bit; 22. pin hole; 23. threaded hole; 24. limit screw; 25. second bearing; 26. upper limit ring; 29. ​​lower limit ring; 30. first sealing ring; 31. second sealing ring; 32. driving connecting rod. Specific implementation method:

[0020] 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.

[0021] Example

[0022] See also Figure 1-4 The utility model provides a technical solution: a new screw drill, including a main body assembly 1, the main body assembly 1 includes a cylindrical rotating rod 11, a main shaft 12, a cylindrical screw 13, an external spline 14, an internal spline 15, a cylindrical nut 16, a first bearing 17, a mounting seat 18, a hexagonal prism 19, a connecting tube 20 and a drill bit 21, the inner top wall of the cylindrical rotating rod 11 is welded with the main shaft 12, the outer side wall of the main shaft 12 is sleeved with the cylindrical screw 13, the outer side wall of the main shaft 12 is fixedly connected with the external spline 14, and the inner side wall of the cylindrical screw 13 is fixedly connected with the internal spline 1 5. The outer wall of the external spline 14 is fixedly connected to the inner wall of the internal spline 15. The outer wall of the cylindrical screw 13 is threadedly connected with a cylindrical nut 16. The bottom of the outer wall of the cylindrical nut 16 is fixedly connected with a first bearing 17. The outer wall of the first bearing 17 is fixedly connected with a mounting seat 18. The bottom of the mounting seat 18 is fixedly connected with a hexagonal prism 19. The outer wall of the hexagonal prism 19 is slidably connected with a connecting tube 20. A drill bit 21 is welded on the lower surface of the connecting tube 20. The connecting tube 20 slides on the outer wall of the hexagonal prism 19 to limit the connecting tube 20.

[0023] In this embodiment, specifically: pin holes 22 are opened on both sides of the outer wall of the connecting tube 20, threaded holes 23 are opened on both sides of the outer wall of the hexagonal prism 19, the inner walls of the two pin holes 22 are slidably connected with limit screws 24, and the ends of the outer walls of the two limit screws 24 that are close to each other are respectively threadedly connected to the inner walls of the two threaded holes 23, and the connecting tube 20 is limited by the limit screws 24, thereby fixing the drill bit 21.

[0024] In this embodiment, specifically: a second bearing 25 is fixedly connected to the upper portion of the outer wall of the cylindrical nut 16, an upper limit ring 26 is fixedly connected to the outer wall of the second bearing 25, and the outer wall of the upper limit ring 26 is slidably connected to the inner wall of the cylindrical rotating rod 11. The upper limit ring 26 slides inside the cylindrical nut 16, thereby limiting the upper limit ring 26, thereby increasing the stability of movement and rotation of the cylindrical nut 16.

[0025] In this embodiment, specifically: the outer wall of the mounting seat 18 is slidably connected to the bottom of the inner wall of the cylindrical rotating rod 11, and the mounting seat 18 slides inside the cylindrical rotating rod 11, thereby facilitating the mounting seat 18 to rotate inside the cylindrical rotating rod 11 or slide out from the inside of the cylindrical rotating rod 11.

[0026] In this embodiment, specifically: a lower limiting ring 29 is fixedly connected to the upper part of the inner wall of the cylindrical rotating rod 11 near the mounting seat 18 , and the lower limiting ring 29 limits the upper limiting ring 26 , thereby limiting the cylindrical nut 16 .

[0027] In this embodiment, specifically: the upper surface and the lower surface of the upper limit ring 26 are fixedly connected with the first sealing ring 30, and the inner walls of the two first sealing rings 30 are rotatably connected to the outer wall of the cylindrical nut 16 close to the upper and lower parts of the second bearing 25. The first sealing ring 30 seals the second bearing 25, thereby preventing liquid or impurities from entering the interior of the second bearing 25 and causing damage during operation.

[0028] In this embodiment, specifically: a second sealing ring 31 is fixedly connected to the upper surface of the mounting seat 18, and an inner wall of the second sealing ring 31 is rotatably connected to an outer wall of the cylindrical nut 16 near an upper portion of the first bearing 17, and the first bearing 17 is sealed by the second sealing ring 31, thereby preventing liquid or impurities from entering the interior of the first bearing 17 and causing damage during operation.

[0029] In this embodiment, specifically: a driving connecting rod 32 is welded at the center of the upper surface of the cylindrical rotating rod 11, and the driving connecting rod 32 is convenient for connecting to an external driving device.

[0030] The working principle or structural principle is that when in use, the connecting rod 32 is connected to an external driving device by driving the connecting rod 32 to rotate, thereby driving the cylindrical rotating rod 11 to rotate, and then driving the main shaft 12 to start rotating. Through the cooperation of the internal spline 15 and the external spline 14, the cylindrical screw 13 also rotates accordingly. Since the cylindrical nut 16 is threadedly connected to the cylindrical screw 13, when the cylindrical screw 13 rotates, the cylindrical nut 16 moves in the axial direction of the cylindrical screw 13, and is transmitted to the drill bit 21 through the axial movement of the cylindrical nut 16 and the first bearing 17, the mounting seat 18, the hexagonal prism 19 and the connecting cylinder 20, thereby driving the drill bit 21 to perform drilling operations. At the same time, when the cylindrical nut 16 moves axially along the cylindrical screw 13, It will drive the drill bit 21 to move together through the first bearing 17 and the mounting seat 18. Since the cylindrical nut 16 moves along the thread of the cylindrical screw 13, this movement will be converted into the rotational motion of the drill bit 21. In addition, the rotation of the drill bit 21 is also affected by the reaction force of the drilling medium (such as rock). This reaction force will also prompt the drill bit 21 to rotate for drilling operations. The axial movement range of the cylindrical nut 16 is limited by the upper limit ring 26 and the lower limit ring 29, thereby ensuring the stability and safety of the drilling process. The first bearing 17 and the second bearing 25 are sealed by the first sealing ring 30 and the second sealing ring 31, thereby preventing liquid or impurities from damaging the internal components during the working process.

[0031] 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. A new type of screw drill, characterized in that: include A main body component (1), the main body component (1) comprising a cylindrical rotating rod (11), a main shaft (12), a cylindrical screw (13), an external spline (14), an internal spline (15), a cylindrical nut (16), a first bearing (17), a mounting seat (18), a hexagonal prism (19), a connecting tube (20) and a drill bit (21), the inner top wall of the cylindrical rotating rod (11) being welded with the main shaft (12), the outer side wall of the main shaft (12) being sleeved with the cylindrical screw (13), the outer side wall of the main shaft (12) being fixedly connected with the external spline (14), the inner side wall of the cylindrical screw (13) being fixedly connected with the An inner spline (15) is connected, the outer side wall of the outer spline (14) is fixedly connected to the inner side wall of the inner spline (15), the outer side wall of the cylindrical screw (13) is threadedly connected to a cylindrical nut (16), the bottom of the outer side wall of the cylindrical nut (16) is fixedly connected to a first bearing (17), the outer side wall of the first bearing (17) is fixedly connected to a mounting seat (18), the bottom of the mounting seat (18) is fixedly connected to a hexagonal prism (19), the outer side wall of the hexagonal prism (19) is slidably connected to a connecting tube (20), and a drill bit (21) is welded to the lower surface of the connecting tube (20).

2. A new type of screw drill according to claim 1, characterized in that: The outer wall of the connecting tube (20) is provided with pin holes (22) on both sides, the outer wall of the hexagonal column (19) is provided with threaded holes (23) on both sides, the inner walls of the two pin holes (22) are slidably connected with limit screws (24), and the ends of the outer walls of the two limit screws (24) that are close to each other are respectively threadedly connected to the inner walls of the two threaded holes (23).

3. A new type of screw drill according to claim 1, characterized in that: A second bearing (25) is fixedly connected to the upper portion of the outer wall of the cylindrical nut (16), an upper limit ring (26) is fixedly connected to the outer wall of the second bearing (25), and the outer wall of the upper limit ring (26) is slidably connected to the inner wall of the cylindrical rotating rod (11).

4. A new screw drill according to claim 3, characterized in that: The outer side wall of the mounting seat (18) is slidably connected to the bottom of the inner side wall of the cylindrical rotating rod (11).

5. A new type of screw drill according to claim 4, characterized in that: A lower limiting ring (29) is fixedly connected to the upper portion of the inner side wall of the cylindrical rotating rod (11) close to the mounting seat (18).

6. A new type of screw drill according to claim 3, characterized in that: The upper and lower surfaces of the upper limit ring (26) are fixedly connected to first sealing rings (30), and the inner side walls of the two first sealing rings (30) are rotatably connected to the outer side wall of the cylindrical nut (16) near the upper and lower parts of the second bearing (25).

7. A new type of screw drill according to claim 1, characterized in that: A second sealing ring (31) is fixedly connected to the upper surface of the mounting seat (18), and the inner side wall of the second sealing ring (31) is rotatably connected to the outer side wall of the cylindrical nut (16) close to the upper part of the first bearing (17).

8. A new type of screw drill according to claim 1, characterized in that: A driving connecting rod (32) is welded at the center of the upper surface of the cylindrical rotating rod (11).

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