Drill rod lifting nipple
By introducing structures such as positioning grooves, through grooves, contraction grooves, and limiting blocks into the drill pipe lifting sub, combined with the design of springs and movable rings, the problem of inconvenient separation between the sub and the drill pipe in the prior art is solved, and a convenient disassembly and installation process is realized.
Patent Information
- Application Number
- CN202422753360.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-12
AI Technical Summary
When disassembling existing drill pipes, it is inconvenient to separate the short section from the drill pipe, requiring the use of special tools, which affects the disassembly efficiency.
A drill pipe lifting sub was designed. By setting positioning grooves, through grooves, contraction grooves and limiting blocks in the connecting column, and using the cooperation of springs and movable rings, the connecting sub can be easily disassembled and installed.
It enables convenient disassembly and installation of the short section and drill pipe, improving overall disassembly efficiency.
Smart Images
Figure CN223482607U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of drilling equipment technology, and more specifically, it relates to a drill pipe lifting section. Background Technology
[0002] During drilling, the torque and weight of the drill pipe are affected by factors such as the resistance of the formation's solids and fluids, as well as the terrain. Therefore, a component is needed to ensure the stability and efficiency of the drill pipe and prevent drilling operations from being disrupted due to drill pipe deformation. The role of the sub section is to connect the drill pipe assembly, support and bear its torque and weight, and ensure drilling stability and efficiency.
[0003] Based on the above, the inventors have discovered the following problems: the short sections currently used are generally flat-mouth short sections or internally threaded short sections. When disassembling the drill rod, it is inconvenient to separate the short section from the drill rod. Special tools are required to separate the short section from the drill rod by rotation, which is inconvenient and does not improve the overall disassembly efficiency.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a drill pipe lifting sub in order to achieve a more practical purpose. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a drill pipe lifting sub, which solves the problem that it is inconvenient to separate the sub from the drill pipe when disassembling the current drill pipe.
[0006] The purpose and function of this utility model's drill pipe lifting sub are achieved by the following specific technical means:
[0007] A drill pipe lifting sub includes a rod body, a connecting post installed at the upper end of the rod body, a positioning groove on the inner side of the connecting post, a through groove on the middle side of the connecting post, a connecting section inserted into the inner side of the connecting post, a positioning strip on the side of the connecting section, a contraction groove on the side of the connecting section, a movable shaft installed at the upper part of the connecting section below the contraction groove, and a limit block movably connected to the connecting section through the movable shaft, the upper middle part of the limit block being located inside the through groove.
[0008] Furthermore, the size of the positioning groove is adapted to the size of the positioning strip, the positioning strip is located inside the positioning groove, and there are multiple limiting blocks and through slots, which are evenly arranged in a circle.
[0009] Furthermore, a spring is installed on the upper inner side of the limiting block, one end of which is connected to the inside of the shrinkage groove, the size of which is adapted to the size of the limiting block.
[0010] Furthermore, a movable ring is sleeved on the outer side of the middle part of the connecting column, and a pushing block is installed on the inner side of the movable ring. The width of the pushing block is adapted to the movement of the through groove, and the pushing block is located inside the through groove.
[0011] Furthermore, a first support seat and a second support seat are installed on the lower inner side of the connecting column. The first support seat and the second support seat are connected by a connecting spring, and the lower part of the connecting section abuts against the second support seat.
[0012] Furthermore, a connecting cylinder is installed on the upper part of the connecting joint, and connecting threads are provided at the opposite positions of the connecting column and the connecting cylinder. The connecting threads on the connecting column and the connecting cylinder are connected by a fixed cylinder thread.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] In this invention, the fixed cylinder is completely moved onto the connecting cylinder, and then the movable ring is pushed upward. The movable ring drives the pushing block to move inside the through groove, gradually contacting the upper part of the limiting block. The limiting block is pushed to move around the movable shaft as the center, gradually entering the interior of the shrinkage groove. When the limiting block enters the interior of the shrinkage groove, the connecting spring force pushes the connecting section to move out of the interior of the connecting column, thus facilitating disassembly.
[0015] In this invention, the limiting block is pushed into the shrinkage groove, at which point the spring contracts. When the lower part of the connecting section and the second support contact, the connecting spring at the bottom contracts as the section continues to move. When the limiting block gradually aligns with the position of the through groove, the spring force pushes the limiting block into the through groove. At this point, the fixed cylinder is rotated, and the connecting cylinder and the connecting column are connected through the connecting thread, thus facilitating installation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall assembly of a drill pipe lifting section according to this utility model.
[0017] Figure 2 This is a schematic diagram of a drill pipe lifting section according to the present invention.
[0018] Figure 3 This is a schematic diagram of a drill pipe lifting section according to the present invention.
[0019] Figure 4 This is a schematic diagram of a drill pipe lifting section according to the present invention.
[0020] Figure 5 This is a schematic diagram of a drill pipe lifting section according to the present invention.
[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0022] 1. Rod body; 2. Connecting column; 3. Positioning groove; 4. Through groove; 5. Connecting cylinder; 6. Connecting joint; 7. Contraction groove; 8. Movable shaft; 9. Limiting block; 10. Spring; 11. Positioning strip; 12. Movable ring; 13. Push block; 14. Connecting thread; 15. Fixed cylinder; 16. First support seat; 17. Second support seat; 18. Connecting spring. Detailed Implementation
[0023] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] Example:
[0027] As attached Figure 1 To be continued Figure 5 As shown:
[0028] This utility model provides a drill pipe lifting section, including a rod body 1. A connecting post 2 is installed at the upper end of the rod body 1. A positioning groove 3 is formed on the inner side of the connecting post 2. A through groove 4 is formed on the middle side of the connecting post 2. A connecting section 6 is inserted into the inner side of the connecting post 2. A positioning strip 11 is provided on the side of the connecting section 6. A contraction groove 7 is formed on the side of the connecting section 6. A movable shaft 8 is installed on the upper part of the connecting section 6 below the contraction groove 7. The connecting section 6 is movably connected to a limiting block 9 through the movable shaft 8. The upper middle part of the limiting block 9 is located inside the through groove 4. The size of the positioning groove 3 is adapted to the size of the positioning strip 11. The positioning strip 11 is located inside the positioning groove 3. The limiting block 9 and the through groove 4 are connected. There are multiple 4, which are evenly arranged in a circle. A spring 10 is installed on the upper inner side of the limiting block 9. One end of the spring 10 is connected to the inside of the shrinkage groove 7. The size of the shrinkage groove 7 is adapted to the size of the limiting block 9. When the limiting block 9 is pushed into the inside of the shrinkage groove 7, the spring 10 contracts. When the lower part of the connecting section 6 and the second support seat 17 come into contact, the connecting spring 18 at the bottom contracts while the connecting section 6 is continuously moved. When the limiting block 9 gradually corresponds to the position of the through groove 4, the limiting block 9 is pushed into the inside of the through groove 4 by the force of the spring 10. At this time, the fixed cylinder 15 is rotated, and the connecting cylinder 5 and the connecting column 2 are connected by the connecting thread 14.
[0029] Among them, a movable ring 12 is sleeved on the outer side of the middle part of the connecting column 2, and a push block 13 is installed on the inner side of the movable ring 12. The width of the push block 13 is adapted to the movement of the through groove 4. The push block 13 is located inside the through groove 4. Pushing the movable ring 12 upward, the movable ring 12 drives the push block 13 to move inside the through groove 4, gradually contacting the upper part of the limit block 9, pushing the limit block 9 to move around the movable shaft 8 as the center, and gradually entering the interior of the shrinkage groove 7.
[0030] The lower inner side of the connecting column 2 is equipped with a first support seat 16 and a second support seat 17. The first support seat 16 and the second support seat 17 are connected by a connecting spring 18, and the lower part of the connecting section 6 abuts against the second support seat 17.
[0031] The upper part of the connecting section 6 is equipped with a connecting cylinder 5. The connecting column 2 and the connecting cylinder 5 are provided with connecting threads 14 at their opposite positions. The connecting threads 14 on the connecting column 2 and the connecting cylinder 5 are connected by a fixed cylinder 15. By rotating the fixed cylinder 15, the connecting cylinder 5 and the connecting column 2 are connected by the connecting threads 14.
[0032] The specific usage and function of this embodiment are as follows:
[0033] In this invention, firstly, the positioning strip 11 on the connecting joint 6 is aligned with the positioning groove 3 inside the connecting post 2. Then, the connecting joint 6 is inserted into the interior of the connecting post 2. The limiting block 9 on the connecting joint 6 gradually contacts the edge of the connecting post 2, pushing the limiting block 9 into the interior of the contraction groove 7. At this time, the spring 10 contracts. When the lower part of the connecting joint 6 contacts the second support seat 17, the connecting spring 18 at the bottom contracts simultaneously through continuous movement. When the limiting block 9 gradually aligns with the position of the through groove 4, the force of the spring 10 pushes the limiting block 9 into the interior of the through groove 4. At this time, rotate the fixed cylinder 15 and connect the connecting cylinder 5 and the connecting column 2 through the connecting thread 14. When disassembly is required, first move the fixed cylinder 15 completely onto the connecting cylinder 5, and then push the movable ring 12 upward. The movable ring 12 drives the pushing block 13 to move inside the through groove 4 and gradually contact the upper part of the limiting block 9. Push the limiting block 9 to move around the movable shaft 8 as the center and gradually enter the shrinkage groove 7. When the limiting block 9 enters the shrinkage groove 7, the connecting section 6 can be pushed out from the inside of the connecting column 2 by the force of the connecting spring 18.
[0034] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A drill pipe lifting sub, comprising a rod body (1), characterized in that: A connecting post (2) is installed at the upper end of the rod (1). A positioning groove (3) is provided on the inner side of the connecting post (2). A through groove (4) is provided on the middle side of the connecting post (2). A connecting section (6) is inserted into the inner side of the connecting post (2). A positioning strip (11) is provided on the side of the connecting section (6). A shrinkage groove (7) is provided on the side of the connecting section (6). A movable shaft (8) is installed on the upper part of the connecting section (6) below the shrinkage groove (7). The connecting section (6) is movably connected to a limit block (9) through the movable shaft (8). The upper middle part of the limit block (9) is located inside the through groove (4).
2. The drill pipe lifting sub as described in claim 1, characterized in that: The size of the positioning groove (3) is adapted to the size of the positioning strip (11). The positioning strip (11) is located inside the positioning groove (3). There are multiple limiting blocks (9) and through grooves (4), which are evenly arranged in a circle.
3. The drill pipe lifting sub as described in claim 1, characterized in that: A spring (10) is installed on the upper inner side of the limiting block (9), and one end of the spring (10) is connected to the inside of the shrinkage groove (7). The size of the shrinkage groove (7) is adapted to the size of the limiting block (9).
4. The drill pipe lifting sub as described in claim 1, characterized in that: A movable ring (12) is sleeved on the outer side of the middle part of the connecting column (2), and a push block (13) is installed on the inner side of the movable ring (12). The width of the push block (13) is adapted to the movement of the through groove (4), and the push block (13) is located inside the through groove (4).
5. The drill pipe lifting sub as described in claim 1, characterized in that: The lower inner side of the connecting column (2) is equipped with a first support seat (16) and a second support seat (17). The first support seat (16) and the second support seat (17) are connected by a connecting spring (18). The lower part of the connecting joint (6) and the second support seat (17) abut against each other.
6. The drill pipe lifting sub as described in claim 1, characterized in that: The upper part of the connecting section (6) is equipped with a connecting cylinder (5). The connecting column (2) and the connecting cylinder (5) are provided with connecting threads (14) at opposite positions. The connecting threads (14) on the connecting column (2) and the connecting cylinder (5) are connected by a fixed cylinder (15).