Quick connection joint structure of petroleum drill rod

Abstract

The utility model discloses a quick connection joint structure of a petroleum drill rod, and relates to the technical field of petroleum exploitation. The petroleum drill rod comprises a petroleum drill rod body, wherein a drill bit is arranged at the bottom of the petroleum drill rod body; a limiting assembly is arranged in the petroleum drill rod body and comprises a clamping rod, and the clamping rod is located in the petroleum drill rod body. The vertical rod is pulled through the handle so as to release the limit of the cylinder to the extrusion strip, at the moment, the inclined cutting block does not extrude the rolling wheel any more, the first spring drives the clamping rod to move out of the clamping groove and release the limit to the connecting column, and then the whole drill bit can be rotated by 90 degrees and then moves downwards, so that the drill bit can be disassembled and assembled, and the cylinder is extruded through the extrusion strip when the drill bit is assembled. The petroleum drill rod body and the drill bit can be mounted in the reverse direction of the dismounting operation process, use of connecting threads is avoided, normal connection between the petroleum drill rod body and the drill bit is guaranteed, quick connection can be achieved without special tools, and the petroleum exploitation efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of petroleum extraction technology, and in particular relates to a quick-connect joint structure for oil drill pipe. Background Technology

[0002] Oil drill pipe is a long strip of steel pipe used in oil drilling to connect drill bit and drilling equipment. It is an important component for transmitting power and torque in oil drilling operations. During oil extraction, drill bit may wear out or be damaged. In order to improve the efficiency of drill bit replacement, a quick-connect joint structure is designed at the oil drill pipe and drill bit.

[0003] Existing quick-connect coupling structures mostly use threaded connections to connect oil drill pipes and drill bits. Threaded connections are prone to jamming, and after prolonged use, the threads are susceptible to corrosion, leading to thread damage and affecting the connection between the oil drill pipe and drill bit. Furthermore, threaded connections require special tools for installation, resulting in low installation efficiency and reducing oil extraction efficiency. To address these issues, we provide a quick-connect coupling structure for oil drill pipes. Utility Model Content

[0004] The purpose of this utility model is to provide a quick-connect joint structure for oil drill pipes. By combining the limiting component and the extrusion component, it solves the problems of existing quick-connect joint structures using threaded connections, which lead to damage to the connecting threads affecting the connection and the need for special tools, resulting in reduced installation efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0006] This utility model relates to a quick-connect coupling structure for oil drill pipe, comprising an oil drill pipe body, with a drill bit disposed at the bottom of the oil drill pipe body; a limiting component is disposed inside the oil drill pipe body, the limiting component including a locking rod located inside the oil drill pipe body, a vertical plate fixedly connected to one side of the locking rod; a pressing component is disposed at the top of the drill bit, the pressing component including a disc, the bottom of the disc being fixedly connected to the drill bit, and a pressing strip being fixedly connected to the top of the disc; a protective component is disposed at the top of the oil drill pipe body, the protective component including a fixing cylinder, the bottom of the fixing cylinder being fixedly connected to the oil drill pipe body, and a sealing cap being threadedly connected to the top of the fixing cylinder, thereby limiting and protecting the limiting component through the protective component.

[0007] The present invention is further configured such that the limiting component also includes a cylinder, the cylinder being located inside the oil drill pipe body, a fixed rod being fixedly connected to one side of the cylinder, a beveled block being fixedly connected to one side of the fixed rod, a roller being provided on one side of the beveled block, a movable rod being fixedly connected to one side of the roller, a connecting plate being sleeved on the surface of the movable rod, a first spring being fixedly connected to one side of the vertical plate, and a vertical rod being fixedly connected to the top of the cylinder.

[0008] The present invention is further configured such that the extrusion assembly includes a positioning block, the positioning block is fixedly connected to the extrusion strip, a connecting column is fixedly connected to the top of the disc, and a slot is provided on one side of the connecting column.

[0009] The present invention is further configured such that a second spring is fixedly connected to the top of the oil drill pipe body, and the drill bit is in contact with the oil drill pipe body.

[0010] The present invention is further configured such that a handle is provided inside the fixed cylinder, and the handle is in contact with the sealing cover.

[0011] The present invention is further configured such that the oblique block is in contact with the roller, and the first spring is fixedly connected to the connecting plate.

[0012] The present invention is further configured such that the top of the connecting plate passes through the cylinder, and the first spring is sleeved on the surface of the movable rod.

[0013] This invention has the following advantages: By pulling the vertical rod with the handle, the cylinder's restriction on the extrusion strip is released. At this time, the oblique cutting block no longer squeezes the roller, and the first spring drives the locking rod to move out of the slot, releasing the restriction on the connecting column. The entire drill bit can then be rotated 90 degrees and moved downwards to disassemble it. During installation, the cylinder is squeezed by the extrusion strip, and the disassembly process is reversed to install it. This avoids the use of connecting threads, ensures the normal connection between the oil drill pipe body and the drill bit, and allows for quick connection without special tools, thus improving the efficiency of oil extraction. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 This is a perspective view of a quick-connect coupling structure for oil drill pipe.

[0016] Figure 2 This is a cross-sectional view of the oil drill pipe body in a quick-connect coupling structure for oil drill pipe.

[0017] Figure 3This is a cross-sectional view of the cylinder in a quick-connect joint structure for oil drill pipe.

[0018] Figure 4 This is a cross-sectional view of a partial structure in a quick-connect joint structure for oil drill pipe.

[0019] Figure 5 This diagram illustrates the drill bit installation process in a quick-connect coupling structure for oil drill pipe.

[0020] In the attached diagram: 1. Oil drill pipe body; 2. Drill bit; 3. Clamping rod; 4. Vertical plate; 5. Disc; 6. Extrusion strip; 7. Fixed cylinder; 8. Sealing cap; 9. Cylinder; 10. Fixed rod; 11. Beveled block; 12. Roller; 13. Movable rod; 14. Connecting plate; 15. First spring; 16. Vertical rod; 17. Positioning block; 18. Connecting column; 19. Slot; 20. Second spring; 21. Handle. Detailed Implementation

[0021] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1

[0023] Please see Figures 1-5 This utility model relates to a quick-connect connector structure for oil drill pipe, comprising an oil drill pipe body 1, with a drill bit 2 disposed at the bottom of the oil drill pipe body 1; a limiting component is disposed inside the oil drill pipe body 1, the limiting component including a locking rod 3, the locking rod 3 being located inside the oil drill pipe body 1, a vertical plate 4 being fixedly connected to one side of the locking rod 3; a pressing component is disposed at the top of the drill bit 2, the pressing component including a disc 5, the bottom of the disc 5 being fixedly connected to the drill bit 2, and a pressing strip 6 being fixedly connected to the top of the disc 5; a protective component is disposed at the top of the oil drill pipe body 1, the protective component including a fixing cylinder 7, the bottom of the fixing cylinder 7 being fixedly connected to the oil drill pipe body 1, and a sealing cap 8 being threadedly connected to the top of the fixing cylinder 7, thereby limiting and protecting the limiting component through the protective component.

[0024] Specifically: the oil drill pipe body 1 is one of the key tools used in the oil and gas drilling process. It is mainly used to transmit mechanical force and drilling fluid, and to maintain the connection between the drill bit 2 and the drilling rig. It is an existing mature technology. The size of the slot 19 is adapted to the chuck 3. The part of the chuck 3 is located inside the slot 19. The chuck 3 is in contact with the connecting post 18. The bottom of the cylinder 9 is provided with a relief groove adapted to the extrusion strip 6. The extrusion strip 6 is in contact with the cylinder 9.

[0025] Example 2

[0026] Please see Figures 1-5Based on Embodiment 1, the limiting assembly further includes a cylinder 9 located inside the oil drill pipe body 1. A fixing rod 10 is fixedly connected to one side of the cylinder 9, and a beveled block 11 is fixedly connected to one side of the fixing rod 10. A roller 12 is provided on one side of the beveled block 11, and a movable rod 13 is fixedly connected to one side of the roller 12. A connecting plate 14 is sleeved on the surface of the movable rod 13. A first spring 15 is fixedly connected to one side of the vertical plate 4, and a vertical rod 16 is fixedly connected to the top of the cylinder 9. The extrusion assembly also includes a positioning block 17, which is connected to the extrusion... The pressure strips 6 are fixedly connected, the top of the disc 5 is fixedly connected to the connecting post 18, the connecting post 18 has a slot 19 on one side, the top of the oil drill pipe body 1 is fixedly connected to the second spring 20, the drill bit 2 is in contact with the oil drill pipe body 1, the fixed cylinder 7 is provided with a handle 21, the handle 21 is in contact with the sealing cover 8, the oblique cutting block 11 is in contact with the roller 12, the first spring 15 is fixedly connected to the connecting plate 14, the top of the connecting plate 14 passes through the cylinder 9, and the first spring 15 is sleeved on the surface of the movable rod 13.

[0027] Specifically: the top of the vertical rod 16 passes through the fixed cylinder 7 and is fixedly connected to the handle 21. A positioning groove adapted to the positioning block 17 is opened on one side inside the oil drill pipe body 1. The positioning groove is divided into horizontal and vertical, and the horizontal positioning groove and the vertical positioning groove are connected. The bottom of the second spring 20 is fixedly connected to the cylinder 9.

[0028] The working principle of this utility model is as follows: When it is necessary to disassemble the drill bit 2, open the sealing cover 8, pull the vertical rod 16 upward through the handle 21, and drive the fixed rod 10 and the oblique cutting block 11 to move upward through the cylinder 9. At this time, the oblique cutting block 11 no longer squeezes the roller 12, and the first spring 15 drives the locking rod 3 to move out of the locking groove 19, which can release the limitation on the connecting column 18. At the same time, when the cylinder 9 moves upward, it will release the limitation on the extrusion strip 6. Rotate the drill bit 2 ninety degrees and move it downward to disassemble it.

[0029] When drill bit 2 needs to be installed, insert positioning block 17 into the longitudinal positioning groove, push drill bit 2 upward, and squeeze cylinder 9 through extrusion bar 6. The second spring 20 is compressed. When positioning block 17 moves to the transverse positioning groove, rotate drill bit 2 ninety degrees. The second spring 20 drives cylinder 9 to limit extrusion bar 6. At this time, oblique cutting block 11 squeezes roller 12 to drive clasp 3 into clasp 19 to limit connecting column 18. The installation is then completed. The entire installation process is efficient and convenient, without the need for special tools and without using connecting threads, ensuring normal connection between oil drill pipe and drill bit 2, and improving oil extraction efficiency.

[0030] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A quick-connect coupling structure for oil drill pipe, comprising an oil drill pipe body (1), characterized in that: The bottom of the oil drill pipe body (1) is provided with a drill bit (2); The oil drill pipe body (1) is provided with a limiting component inside. The limiting component includes a locking rod (3). The locking rod (3) is located inside the oil drill pipe body (1). A vertical plate (4) is fixedly connected to one side of the locking rod (3). A pressing component is provided at the top of the drill bit (2). The pressing component includes a disc (5). The bottom of the disc (5) is fixedly connected to the drill bit (2). A pressing strip (6) is fixedly connected to the top of the disc (5). The top of the oil drill pipe body (1) is provided with a protective component, which includes a fixed cylinder (7). The bottom of the fixed cylinder (7) is fixedly connected to the oil drill pipe body (1), and the top of the fixed cylinder (7) is threadedly connected with a sealing cap (8). The protective component provides limiting protection for the limiting component.

2. The quick-connect joint structure for oil drill pipe according to claim 1, characterized in that: The limiting component also includes a cylinder (9), which is located inside the oil drill pipe body (1). A fixed rod (10) is fixedly connected to one side of the cylinder (9), and a beveled block (11) is fixedly connected to one side of the fixed rod (10). A roller (12) is provided on one side of the beveled block (11), and a movable rod (13) is fixedly connected to one side of the roller (12). A connecting plate (14) is sleeved on the surface of the movable rod (13). A first spring (15) is fixedly connected to one side of the vertical plate (4), and a vertical rod (16) is fixedly connected to the top of the cylinder (9).

3. The quick-connect joint structure for oil drill pipe according to claim 1, characterized in that: The extrusion assembly also includes a positioning block (17), which is fixedly connected to the extrusion strip (6). A connecting post (18) is fixedly connected to the top of the disc (5), and a slot (19) is provided on one side of the connecting post (18).

4. The quick-connect joint structure for oil drill pipe according to claim 1, characterized in that: A second spring (20) is fixedly connected to the top of the oil drill pipe body (1), and the drill bit (2) is in contact with the oil drill pipe body (1).

5. The quick-connect joint structure for oil drill pipe according to claim 1, characterized in that: The fixed cylinder (7) is provided with a handle (21) inside, and the handle (21) is in contact with the sealing cover (8).

6. The quick-connect joint structure for oil drill pipe according to claim 2, characterized in that: The oblique block (11) is in contact with the roller (12), and the first spring (15) is fixedly connected to the connecting plate (14).

7. The quick-connect joint structure for oil drill pipe according to claim 2, characterized in that: The top of the connecting plate (14) passes through the cylinder (9), and the first spring (15) is sleeved on the surface of the movable rod (13).

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