Drill rod butt joint structure
By using the helical connection and fastening mechanism between the external thread and the thread groove, the problem of easy loosening of the drill rod connection is solved, achieving the effect of stable connection and convenient disassembly.
Patent Information
- Application Number
- CN202520237400.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-14
AI Technical Summary
The existing threaded connections in drill pipes have limited locking effect, which makes the drill pipes prone to loosening during use.
The system employs a helical connection between an external thread and a threaded groove, and utilizes a fastening mechanism consisting of a combination of a connecting block, a connecting groove, a sliding groove, an insert block, an adjusting block, a guide rod, and a fixing block. The insert block pushes the adjusting block and the fixing block against the inner wall of the connecting groove, thereby improving the connection stability.
It enhances the stability of drill pipe connections, ensuring they are less prone to loosening during use and facilitating separation during disassembly, thus improving construction efficiency.
Smart Images
Figure CN223824937U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a drill rod technical field, concretely is a drill rod butt joint structure. BACKGROUND
[0002] In the operation process of the horizontal directional drilling machine, a plurality of straight drill rods are connected end to end, and then the connected drill rods are used to drill a guide hole, expand the hole and pull back the pipeline at least once to obtain a large-curvature pipeline track. In the above operation process, the plurality of drill rods need to be connected end to end to meet the length requirement of the construction.
[0003] The inventor finds that at least the following problems in the prior art have not been solved. In the prior art, the connection of the drill rods is mainly realized by screwing the end faces of the rod bodies to achieve screw butt joint assembly. However, the locking effect of the screw connection is limited, and the drill rods are prone to loosening during use.
[0004] Therefore, we propose a drill rod butt joint structure that can improve the connection stability of two groups of drill rods. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a drill rod butt joint structure to solve the problems raised in the background art.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a drill rod butt joint structure, comprising a first drill rod and a second drill rod, an outer thread is formed on the outer side of the connecting end of the first drill rod, a thread groove is formed on the connecting end of the second drill rod, and the first drill rod and the second drill rod are connected by the outer thread and the thread groove. A fastening mechanism is used for fixed connection of the first drill rod and the second drill rod, the fastening mechanism comprises a connecting block and a connecting groove, the connecting block is fixedly installed on one end of the first drill rod where the outer thread is formed, the connecting groove is formed in the middle of the thread groove, the connecting block is movably connected with the connecting groove, a sliding groove is formed in the inside of the connecting block, an insertion groove is formed in the middle of the side of the sliding groove close to the second drill rod, an insertion block is fixedly installed in the middle of the inner wall of the connecting groove, the insertion block is movably connected with the insertion groove, two groups of adjusting blocks are slidably connected to the inside of the sliding groove, a guide rod is fixedly installed on the middle of the outside of the adjusting block, a fixed block is fixedly installed on one end of the guide rod outside the sliding groove, and the fixed block is movably connected with the inner wall of the connecting groove.
[0007] As an optional scheme of the technical scheme of the present application, two groups of springs are arranged in the inside of the sliding groove, and the insertion block is movably connected with the adjusting block.
[0008] As an optional scheme of the technical scheme of the present application, the two groups of adjusting blocks are arranged opposite to each other, and the side surface of the adjusting block is triangular.
[0009] As an optional solution to the technical solution of this application, a guide groove is provided through the middle of the inner wall of the top and bottom of the slide, and the guide rod is slidably connected to the guide groove.
[0010] As an optional solution to the technical solution of this application, the spring is sleeved on the outside of the guide rod, and the two ends of the spring are fixedly connected to the outside of the adjusting block and the inner wall of the slide groove, respectively.
[0011] As an optional solution to the technical solution of this application, the dimensions of the connecting block and the connecting groove are matched, the dimensions of the guide rod and the sliding groove are matched, and the dimensions of the insert block and the sliding groove are matched.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the threaded groove and external thread are connected in a spiral manner, which facilitates the fixed connection of the first drill rod and the second drill rod; the insert block is movably connected to the slot, and the insert block can be inserted into the sliding groove, thereby pushing the two sets of adjusting blocks to move in opposite directions; the guide rod can push the fixing block to press against the inner wall of the connecting groove, which further improves the connection stability of the first drill rod and the second drill rod. Attached Figure Description
[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0014] Fig. 1 This is a schematic diagram of the connection between the first drill rod and the second drill rod in a drill rod docking structure according to this utility model;
[0015] Fig. 2 This is a schematic diagram of the first drill rod and the second drill rod when the drill rod connection structure of this utility model is disassembled;
[0016] Fig. 3 This is a schematic diagram of the first drill rod of the drill rod connection structure of this utility model.
[0017] In the diagram: 1. First drill rod; 11. External thread; 12. Second drill rod; 13. Threaded groove; 14. Connecting block; 15. Connecting groove; 16. Slide groove; 17. Slot; 18. Insert block; 2. Adjusting block; 21. Guide rod; 22. Fixing block; 23. Spring; 24. Guide groove. Detailed Implementation
[0018] Please see Figs. 1-3This utility model provides a technical solution: a drill rod connection structure, including a first drill rod 1 and a second drill rod 12. The outer side of the connecting end of the first drill rod 1 is provided with an external thread 11, and the connecting end of the second drill rod 12 is provided with a threaded groove 13. The first drill rod 1 and the second drill rod 12 are spirally connected via the external thread 11 and the threaded groove 13. A fastening mechanism is used for the fixed connection of the first drill rod 1 and the second drill rod 12. The fastening mechanism includes a connecting block 14 and a connecting groove 15. The connecting block 14 is fixedly installed at the end of the first drill rod 1 where the external thread 11 is located. The connecting groove 15 is located in the middle of the threaded groove 13. The connecting block 14 is movably connected to the connecting groove 15. The dimensions of the connecting block 14 and the connecting groove 15 are matched. The interior of the connecting block 14 is provided with a sliding groove 16. A slot 17 is provided through the middle of the sliding groove 16 near the second drill rod 12. An insert block 18 is fixedly installed in the middle of the inner wall of the connecting groove 15. The insert block 18 is movably connected to the slot 17, and the dimensions of the insert block 18 and the sliding groove 16 are matched. Two sets of adjusting blocks 2 are slidably connected to the inner side of the sliding groove 16. The two sets of adjusting blocks 2 are arranged in pairs, and the sides of the adjusting blocks 2 are triangular. A guide rod 21 is fixedly installed in the middle of the outer side of the adjusting block 2. A fixing block 22 is fixedly installed at one end of the guide rod 21 on the outer side of the sliding groove 16. The fixing block 22 is movably connected to the inner wall of the connecting groove 15.
[0019] In this technical solution, the threaded groove 13 is spirally connected to the external thread 11, which facilitates the fixed connection between the first drill rod 1 and the second drill rod 12. At this time, the connecting block 14 at one end of the first drill rod 1 is inserted into the connecting groove 15 inside the second drill rod 12. The insert block 18 is movably connected to the slot 17. One end of the insert block 18 can be inserted into the slide groove 16. Since the side of the adjusting block 2 is triangular, the insert block 18 can push the two sets of adjusting blocks 2 to move in opposite directions in the slide groove 16. The guide rod 21 can push the two sets of fixing blocks 22 to move in opposite directions and press against the inner wall of the connecting groove 15, further improving the connection stability between the first drill rod 1 and the second drill rod 12.
[0020] In this embodiment, two sets of springs 23 are provided inside the slide groove 16. The two ends of the springs 23 are fixedly connected to the outer side of the adjusting block 2 and the inner wall of the slide groove 16, respectively. The insert block 18 is movably connected to the adjusting block 2, and the guide rod 21 is matched with the size of the slide groove 16.
[0021] In this technical solution, when the first drill rod 1 and the second drill rod 12 are separated, and the external thread 11 is moved out of the thread groove 13, the insert block 18 is moved out of the slot 17. Through the elastic force of the spring 23, the two sets of adjusting blocks 2 can be pushed to move relative to each other in the slide groove 16. Through the guide rod 21, the two sets of fixing blocks 22 can be pulled to move relative to each other and separate from the inner wall of the connecting groove 15, which facilitates the separation of the first drill rod 1 and the second drill rod 12.
[0022] In this embodiment, a guide groove 24 is provided through the middle of the inner wall of the top and bottom ends of the slide groove 16. The guide rod 21 is slidably connected to the guide groove 24, and the spring 23 is sleeved on the outside of the guide rod 21.
[0023] In this technical solution, the sliding connection between the guide rod 21 and the guide groove 24 can improve the stability of the movement of the adjusting block 2 in the adjusting groove, and further improve the use effect of the fixed block 22. At the same time, the guide rod 21 can limit the spring 23 to prevent the spring 23 from tilting when it is compressed and extended, thus affecting the use effect.
[0024] In a drill pipe docking structure, the threaded groove 13 is screwed to the external thread 11, facilitating the fixed connection between the first drill pipe 1 and the second drill pipe 12. At this time, the connecting block 14 at one end of the first drill pipe 1 is inserted into the connecting groove 15 inside the second drill pipe 12. It is movably connected to the slot 17 via the insert block 18. One end of the insert block 18 can be inserted into the slide groove 16. Because the side of the adjusting block 2 is triangular, the insert block 18 can push the two sets of adjusting blocks 2 to move in opposite directions within the slide groove 16. The guide rod 21 can also push the two sets of... The fixing block 22 moves in the opposite direction and presses against the inner wall of the connecting groove 15, further improving the connection stability between the first drill rod 1 and the second drill rod 12. When the first drill rod 1 and the second drill rod 12 are separated and the external thread 11 moves out of the thread groove 13, the insert block 18 moves out of the slot 17. Under the elastic force of the spring 23, the two sets of adjusting blocks 2 can be pushed to move relative to each other in the sliding groove 16. The guide rod 21 can pull the two sets of fixing blocks 22 to move relative to each other and separate them from the inner wall of the connecting groove 15, which facilitates the separation of the first drill rod 1 and the second drill rod 12.
Claims
1. A drill pipe connection structure, comprising a first drill pipe (1) and a second drill pipe (12), characterized in that, The first drill rod (1) has an external thread (11) on the outer side of its connecting end, and the second drill rod (12) has a threaded groove (13) on its connecting end. The first drill rod (1) and the second drill rod (12) are spirally connected by the external thread (11) and the threaded groove (13). Fastening mechanism: used for the fixed connection of the first drill rod (1) and the second drill rod (12), the fastening mechanism includes a connecting block (14) and a connecting groove (15), the connecting block (14) is fixedly installed on the end of the first drill rod (1) with an external thread (11), the connecting groove (15) is opened in the middle of the thread groove (13), the connecting block (14) is movably connected to the connecting groove (15), the connecting block (14) has a sliding groove (16) inside, the sliding groove (16) is close to the second drill rod (12). A slot (17) is provided through the middle of one side of the connecting groove (15). A plug (18) is fixedly installed in the middle of the inner wall of the connecting groove (15). The plug (18) is movably connected to the slot (17). Two sets of adjusting blocks (2) are slidably connected to the inner side of the sliding groove (16). A guide rod (21) is fixedly installed in the middle of the outer side of the adjusting block (2). A fixing block (22) is fixedly installed at one end of the guide rod (21) placed outside the sliding groove (16). The fixing block (22) is movably connected to the inner wall of the connecting groove (15).
2. The drill pipe connection structure according to claim 1, characterized in that: The slide (16) is equipped with two sets of springs (23), and the insert (18) is movably connected to the adjusting block (2).
3. The drill pipe connection structure according to claim 1, characterized in that: The two sets of adjustment blocks (2) are arranged in pairs, and the sides of the adjustment blocks (2) are triangular.
4. The drill pipe connection structure according to claim 1, characterized in that: The top and bottom inner walls of the slide groove (16) are provided with a guide groove (24) through them, and the guide rod (21) is slidably connected to the guide groove (24).
5. A drill pipe connection structure according to claim 2, characterized in that: The spring (23) is sleeved on the outside of the guide rod (21), and the two ends of the spring (23) are fixedly connected to the outside of the adjusting block (2) and the inner wall of the slide groove (16), respectively.
6. The drill pipe connection structure according to claim 1, characterized in that: The dimensions of the connecting block (14) and the connecting groove (15) are matched, the dimensions of the guide rod (21) and the sliding groove (16) are matched, and the dimensions of the insert block (18) and the sliding groove (16) are matched.