Alloy-plated wear-resistant diamond drill bit

Abstract

The alloy-plated wear-resistant diamond drill bit comprises a drill bit body and a limiting assembly, a screw column is fixedly installed at the bottom of the drill bit body, the outer wall of the screw column is in threaded connection with a drill rod body, and a movable groove is formed in the outer wall of the drill rod body; the limiting assembly used for preventing the drill bit from overturning and loosening is installed in the movable groove, the limiting assembly comprises a movable ring, movable blocks, limiting columns and springs, the movable blocks are symmetrically and fixedly installed on the two sides of the inner wall of the movable ring, the limiting columns are fixedly installed at the tops of the movable blocks, and the outer walls of the limiting columns are sleeved with the springs; sliding grooves are formed in the positions, corresponding to the limiting columns, of the top of the drill rod body, the limiting columns are slidably connected with the drill rod body through the sliding grooves, and inserting grooves are formed in the positions, corresponding to the limiting columns, of the two sides of the bottom of the drill bit. According to the alloy-plated wear-resistant diamond drill bit, rotation of the installed drill bit can be prevented, and meanwhile the moving interval of the moving ring can be limited.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond drill bits, in particular to an alloy-plated wear-resistant diamond drill bit. Background Art

[0002] The drill bit with cutting edge is called diamond drill bit. This drill bit is an integrated drill bit with a relatively simple structure and high strength, high wear resistance and impact resistance. Field use has proved that diamond drill bits have the advantages of high speed, high footage, long life, stable operation, few downhole accidents and good wellbore quality when drilling in soft-medium-hard formations, and alloy-plated diamond drill bits further enhance the service life of the drill bit.

[0003] At present, after a diamond drill bit is damaged, parts of the drill bit need to be disassembled and separated for maintenance. However, when the existing diamond drill bit is in use, the drill bit needs to be separated, which makes it difficult to disassemble the drill bit because the drill bit and its main body are further locked due to other reasons during use, thereby increasing the difficulty of disassembly.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and an alloy-plated wear-resistant diamond drill bit is proposed. Utility Model Content

[0005] The utility model aims to provide an alloy-plated wear-resistant diamond drill bit to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an alloy-plated wear-resistant diamond drill bit, comprising a drill bit and a limit assembly, a screw column is fixedly installed at the bottom of the drill bit, and the outer wall of the screw column is threadedly connected to a drill rod body, a movable groove is opened on the outer wall of the drill rod body, and the limit assembly for preventing the drill bit from flipping and loosening is installed inside the movable groove, the limit assembly comprises a movable ring, a movable block, a limit column and a spring, movable blocks are symmetrically fixedly installed on both sides of the inner wall of the movable ring, and the limit column is fixedly installed on the top of the movable block, and the outer wall of the limit column is sleeved with a spring.

[0007] Preferably, a sliding groove is provided at the top of the drill rod body corresponding to the position of the limiting column, and the limiting column is slidably connected to the drill rod body through the sliding groove.

[0008] Preferably, slots are provided at the positions of the limiting posts on both sides of the bottom of the drill bit, and the inner diameter of the slots is larger than the outer diameter of the limiting posts.

[0009] Preferably, a mounting column is fixedly mounted on the bottom of the drill rod body, and the interior of the mounting column is through-connected with the interior of the drill rod body.

[0010] Preferably, a front clamp is provided below the movable groove, and the front clamp is arranged in a "C"-shaped structure as a whole.

[0011] Preferably, the left end of the front clamp is rotatably connected to a connecting piece, and the rear end of the connecting piece is fixedly mounted with a rear clamp.

[0012] Preferably, a thread groove is provided on the right side of the front clamp, and the internal thread of the thread groove is connected with a fixing screw, and the front clamp is fixedly connected to the rear clamp through the thread groove and the fixing screw.

[0013] Compared with the prior art, the utility model has the beneficial effect that the alloy-plated wear-resistant diamond drill bit can not only prevent the drill bit from rotating after installation, but also limit the movable range of the movable ring.

[0014] 1. The utility model sets a limit assembly to clamp the front clamp with the rear clamp under the movable ring, so that the movable ring is forced to move upward, and pushes the limit column through the slide groove to insert into the slot at the bottom of the drill bit, so as to prevent the drill bit from rotating due to external force after being threadedly connected to the drill rod body, thereby interfering with the convenience of disassembly in the later stage;

[0015] 2. The utility model arranges the front clamp in coordination with the rear clamp so that the front clamp and the rear clamp surround the bottom of the movable groove, and passes through the threaded groove opened at the right end of the front clamp through a fixing screw to be threadedly connected with the rear clamp, so that the front clamp and the rear clamp are fixed inside the movable groove, preventing the movable ring from moving downward due to the elastic force of the spring, thereby achieving the purpose of restriction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an alloy-plated wear-resistant diamond drill bit of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the drill rod main body of an alloy-plated wear-resistant diamond drill bit of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a limit assembly of an alloy-plated wear-resistant diamond drill bit of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the connection structure of the front clamp and the rear clamp of an alloy-plated wear-resistant diamond drill bit.

[0020] In the figure: 1. drill bit; 2. screw column; 3. drill rod body; 4. movable groove; 5. limit assembly; 501. movable ring; 502. movable block; 503. limit column; 504. spring; 6. slide groove; 7. slot; 8. mounting column; 9. front clamp; 10. connecting piece; 11. rear clamp; 12. threaded groove; 13. fixing screw. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1-Figure 3 As shown, an alloy-plated wear-resistant diamond drill bit includes a drill bit 1 and a limit assembly 5, a screw column 2 is fixedly installed at the bottom of the drill bit 1, and the outer wall of the screw column 2 is threadedly connected to a drill rod body 3, and an outer wall of the drill rod body 3 is provided with a movable groove 4, and the limit assembly 5 for preventing the drill bit 1 from flipping and loosening is installed inside the movable groove 4, and the limit assembly 5 includes a movable ring 501, a movable block 502, a limit column 503 and a spring 504, movable blocks 502 are symmetrically fixedly installed on both sides of the inner wall of the movable ring 501, and the limit column 503 is fixedly installed on the top of the movable block 502, and the outer wall of the limit column 503 is sleeved with a spring 504.

[0023] The front clamp 9 cooperates with the rear clamp 11 to engage under the movable ring 501, so that the movable ring 501 is forced to move upward, and the limiting column 503 is pushed through the slide groove 6 and inserted into the slot 7 opened at the bottom of the drill bit 1, so as to prevent the drill bit 1 from rotating due to external force after being threadedly connected with the drill rod body 3, thereby interfering with the convenience of disassembly in the later stage.

[0024] like Figure 1-Figure 4 As shown, a slide groove 6 is provided at the top of the drill rod body 3 at a position corresponding to the limiting column 503 , and the limiting column 503 is slidably connected to the drill rod body 3 through the slide groove 6 .

[0025] The slide groove 6 reduces the interference of the drill pipe body 3 on the limit column 503 when the limit column 503 moves.

[0026] Furthermore, slots 7 are provided at the positions of the limiting posts 503 on both sides of the bottom of the drill bit 1 , and the inner diameter of the slots 7 is greater than the outer diameter of the limiting posts 503 .

[0027] The slot 7 facilitates the limiting connection between the limiting column 503 and the drill bit 1 .

[0028] Furthermore, a mounting column 8 is fixedly mounted on the bottom of the drill rod body 3 , and the interior of the mounting column 8 is through-connected with the interior of the drill rod body 3 .

[0029] Furthermore, a front hoop 9 is provided below the movable groove 4, and the front hoop 9 is arranged in a "C" shape as a whole.

[0030] The front hoop 9 is convenient for closely fitting the inside of the movable groove 4 .

[0031] Furthermore, the left end of the front clamp 9 is rotatably connected to a connecting piece 10, and the rear end of the connecting piece 10 is fixedly mounted with a rear clamp 11.

[0032] The connecting piece 10 enables the rear clamp 11 and the right end of the front clamp 9 to be separated, flipped and unfolded.

[0033] Furthermore, a thread groove 12 is provided on the right side of the front clamp 9, and a fixing screw 13 is connected to the internal thread of the thread groove 12, and the front clamp 9 is fixedly connected to the rear clamp 11 through the thread groove 12 and the fixing screw 13.

[0034] Working principle: When using the alloy-plated wear-resistant diamond drill bit, firstly, the front hoop 9 is engaged with the rear hoop 11 under the movable ring 501, so that the movable ring 501 is forced to move upward, and the limit column 503 is pushed through the slide groove 6 and inserted into the slot 7 opened at the bottom of the drill bit 1 to prevent the drill bit 1 from rotating due to external force after being threadedly connected with the drill rod body 3. Then, the front hoop 9 and the rear hoop 11 are surrounded at the bottom of the movable groove 4, and the fixing screw 13 is passed through the threaded groove 12 opened at the right end of the front hoop 9 and is threadedly connected with the rear hoop 11. , so that the front hoop 9 and the rear hoop 11 are fixed inside the movable groove 4, preventing the movable ring 501 from moving downward due to the elastic force of the spring 504, thereby achieving the purpose of restriction. When disassembly is required, the front hoop 9 and the rear hoop 11 are removed from the movable groove 4, and the movable ring 501 is pushed downward by the spring 504. While the movable ring 501 moves downward, the limiting column 503 is pulled back into the drill pipe body 3, so that the drill bit 1 loses the interference of the limiting column 503 and can be flexibly taken out. This is the working principle of the alloy-plated wear-resistant diamond drill bit.

Claims

1. An alloy-plated wear-resistant diamond drill bit, comprising a drill bit (1) and a stopper assembly (5), characterized in that: A screw column (2) is fixedly mounted on the bottom of the drill bit (1), and a drill rod body (3) is threadedly connected to the outer wall of the screw column (2). A movable groove (4) is provided on the outer wall of the drill rod body (3). A limit assembly (5) for preventing the drill bit (1) from turning over and loosening is installed inside the movable groove (4). The limit assembly (5) comprises a movable ring (501), a movable block (502), a limit column (503) and a spring (504). The movable blocks (502) are symmetrically fixedly mounted on both sides of the inner wall of the movable ring (501), and the limit column (503) is fixedly mounted on the top of the movable block (502). The outer wall of the limit column (503) is sleeved with a spring (504).

2. The alloy-plated wear-resistant diamond drill bit according to claim 1, characterized in that: A sliding groove (6) is provided at the top of the drill rod body (3) at a position corresponding to the limiting column (503), and the limiting column (503) is slidably connected to the drill rod body (3) via the sliding groove (6).

3. The alloy-plated wear-resistant diamond drill bit according to claim 1, characterized in that: Slots (7) are provided at the positions of the limiting posts (503) on both sides of the bottom of the drill bit (1), and the inner diameter of the slots (7) is greater than the outer diameter of the limiting posts (503).

4. The alloy-plated wear-resistant diamond drill bit according to claim 1, characterized in that: A mounting column (8) is fixedly mounted on the bottom of the drill rod body (3), and the interior of the mounting column (8) is connected to the interior of the drill rod body (3) in a through-connected manner.

5. The alloy-plated wear-resistant diamond drill bit according to claim 1, characterized in that: A front hoop (9) is provided below the movable groove (4), and the front hoop (9) is arranged in a "C"-shaped structure as a whole.

6. The alloy-plated wear-resistant diamond drill bit according to claim 5, characterized in that: The left end of the front hoop (9) is rotatably connected to a connecting piece (10), and the rear end of the connecting piece (10) is fixedly mounted with a rear hoop (11).

7. The alloy-plated wear-resistant diamond drill bit according to claim 5, characterized in that: A thread groove (12) is provided on the right side of the front clamp (9), and a fixing screw (13) is connected to the inner thread of the thread groove (12), and the front clamp (9) is fixedly connected to the rear clamp (11) through the thread groove (12) and the fixing screw (13).

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