Combined drill pipe anti-loose connection structure

Abstract

The utility model discloses a combined drill rod anti -loosening connection structure, including drill rod body, the one end integral connection of drill rod body has the threaded connector, the integral connection of threaded connector has the locking rod, the integral connection of drill rod body other end has the assembly cover, the both sides of assembly cover all are established and have the through -hole, and the length of assembly cover is equal with the total length of threaded connector and locking rod, and drill rod body is provided with a plurality, and threaded connector is connected with assembly cover, and the both sides of assembly cover respectively insert and set up locking plug -in rod and locking cover rod, and locking plug -in rod one end penetrates and sets up in locking cover rod inside, and the inside slide connection of locking plug -in rod has the push -plate, and the one end fixed connection of push -plate has the clamping column, and clamping column one end penetrates and sets up in locking cover rod inside. The device realizes the stable extension assembly of drill rod body, and increases the performance of drill rod body resistance to reverse, thereby avoiding the drill rod body loosening, improves the security of using drill rod body.

Description

Technical Field

[0001] This utility model relates to the field of drill pipe technology, specifically a combined drill pipe anti-loosening connection structure. Background Technology

[0002] Modular drill pipe (also known as "composite drill pipe" or "composite structure drill pipe") is a specially designed drill pipe, typically composed of two or more components with different structures, materials, or functions. It is designed to adapt to complex geological conditions, improve drilling efficiency, extend service life, or achieve specific drilling functions. It is widely used in mining, geological exploration, coalbed methane development, directional drilling, deep hole drilling, and other fields, and demonstrates particular advantages in conditions where traditional single-structure drill pipes are insufficient.

[0003] Currently, when assembling extended modular drill pipes, they are mainly connected by a screw at one end. However, this connection method is prone to loosening if reverse forces are encountered during use, increasing the risk of using modular drill pipes and requiring improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a modular drill pipe anti-loosening connection structure to solve the problem of easy loosening of modular drill pipe assembly mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined drill rod anti-loosening connection structure, comprising a drill rod body, a threaded connector integrally connected to one end of the drill rod body, a locking rod integrally connected to the threaded connector, an assembly sleeve integrally connected to the other end of the drill rod body, the drill rod body having multiple such assembly sleeves, the threaded connector and the assembly sleeve being threadedly connected, a locking insert and a locking sleeve rod being inserted into both sides of the assembly sleeve respectively, one end of the locking insert penetrating the locking rod and inserted inside the locking sleeve rod, a lever plate being slidably connected inside the locking insert, a locking pin being fixedly connected to one end of the lever plate, and one end of the locking pin penetrating the locking insert and inserted inside the locking sleeve rod.

[0006] Preferably, the assembly sleeve has through holes on both sides, and the length of the assembly sleeve is equal to the total length of the threaded connector and the locking rod.

[0007] Preferably, the diameter of the locking rod near the locking sleeve is smaller than the diameter of the locking rod away from the locking sleeve, the locking rod is a hollow structure, and the other end of the locking rod is an open structure.

[0008] Preferably, a fixing block is fixedly connected to the inner wall of the locking rod, and a limit rod and a support spring are fixedly connected to one end of the fixing block.

[0009] Preferably, the limiting rod and the support spring are symmetrically distributed about the bisector of the fixed block, and one end of the support spring is fixedly connected to the lever plate.

[0010] Preferably, the locking pin and the dial plate are integrally connected, and the locking pin and the dial plate are provided with a circular hole, which corresponds to the position of the limiting rod.

[0011] Preferably, the locking pin and the limiting rod form a sliding connection, and the length of the limiting rod is greater than the total length of the locking pin and the lever.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) While achieving stable extension and assembly of the drill rod body, this device increases the drill rod body's resistance to reverse movement, thereby preventing the drill rod body from loosening and improving the safety of using the drill rod body.

[0013] (2) This device can be used to connect the locking rod and the threaded connector at the other end of the drill rod by setting an assembly sleeve at one end of the drill rod body. At the same time, by inserting locking rods and locking sleeve rods on both sides of the assembly sleeve, the assembly sleeve and locking rod can be locked to prevent the locking rod from rotating, thereby avoiding the problem of the drill rod body loosening in the reverse direction.

[0014] (3) This device increases the firmness of the connection between the locking sleeve and the locking rod by setting a locking post inside the locking rod that can be automatically supported and manually retracted. The locking post can be connected to the locking sleeve rod. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a combined drill rod anti-loosening connection structure according to the present invention; Figure 2 This utility model relates to a combined drill pipe anti-loosening connection structure. Figure 1 Enlarged view of point A in the middle; Figure 3 This is a cross-sectional view of the locking insert and locking sleeve of a combined drill rod anti-loosening connection structure according to this utility model; Figure 4 This is a side sectional view of the locking pin of a combined drill rod anti-loosening connection structure according to the present invention.

[0016] In the diagram: 1. Locking rod; 2. Threaded connector; 3. Drill rod body; 4. Locking insert; 5. Assembly sleeve; 6. Locking sleeve rod; 7. Clamping pin; 8. Pulley; 9. Fixing block; 10. Limiting rod; 11. Support spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4This utility model provides a technical solution: a combined drill rod anti-loosening connection structure, including a drill rod body 3, a threaded connector 2 integrally connected to one end of the drill rod body 3, a locking rod 1 integrally connected to the threaded connector 2, and an assembly sleeve 5 integrally connected to the other end of the drill rod body 3. The assembly sleeve 5 has through holes on both sides, and its length is equal to the total length of the threaded connector 2 and the locking rod 1. This structure, by setting the locking rod 1, provides an anti-reverse function for the threaded connector 2 without affecting the connection between the threaded connector 2 and the assembly sleeve 5. Multiple drill rod bodies 3 are provided, and the threaded connectors 2 and assembly sleeves 5 are threadedly connected. Locking rods 4 and locking sleeve rods 6 are respectively inserted on both sides of the sleeve 5. The diameter of the locking rod 4 near the locking sleeve rod 6 is smaller than the diameter of the locking rod 4 away from the locking sleeve rod 6. The locking rod 4 is a hollow structure, and the other end of the locking rod 4 is an open structure. This structure allows the locking rod 4 to quickly lock the assembled sleeve 5 and the locking rod 1 by connecting with the locking sleeve rod 6, thereby preventing the locking rod 1 and the drill rod body 3 from rotating in opposite directions. A fixing block 9 is fixedly connected to the inner wall of the locking rod 4. One end of the fixing block 9 is fixedly connected to a limit rod 10 and a support spring 11. This structure allows for convenient installation of the limit rod 10 and the support spring 11 through the fixing block 9. The limiting rod 10, located inside the support spring 11, ensures greater stability during the extension and retraction of the support spring 11, preventing excessive bending and tilting. Both the limiting rod 10 and the support spring 11 are symmetrically distributed about the bisector of the fixing block 9. One end of the support spring 11 is fixedly connected to the lever 8. This structure allows the locking pin 7 to automatically support itself inside the locking sleeve 6, thereby improving the firmness of the connection between the locking sleeve 6 and the locking insert 4. One end of the locking insert 4 penetrates the locking rod 1 and is inserted into the locking sleeve 6. The lever 8 is slidably connected inside the locking insert 4, and one end of the lever 8 is fixedly connected to a locking pin. The post 7, the locking post 7, and the lever plate 8 are integrally connected. The locking post 7 and the lever plate 8 are provided with round holes, which correspond to the position of the limiting rod 10. This structure can drive the locking post 7 to separate from the locking sleeve rod 6 by manually pressing the lever plate 8, thereby facilitating the disassembly of the locking insert rod 4 and the locking sleeve rod 6. The locking post 7 and the limiting rod 10 form a sliding connection. The length of the limiting rod 10 is greater than the total length of the locking post 7 and the lever plate 8. This structure can be more stable during the extension and retraction of the locking post 7 through the limiting rod 10, avoiding the positional displacement of the locking post 7 and ensuring accurate connection between the locking post 7 and the locking sleeve rod 6. One end of the locking post 7 passes through the locking insert rod 4 and is inserted into the locking sleeve rod 6.

[0019] Working principle: When using this combined drill pipe anti-loosening connection structure, firstly, the drill pipe body 3 is extended and assembled. During assembly, the threaded connectors 2 of the two drill pipe bodies 3 are rotated and threadedly connected to the assembly sleeve 5, so that the locking rod 1 is inserted into the assembly sleeve 5. Then, the locking insert 4 and the locking sleeve rod 6 are taken out, and the lever 8 on one side of the locking insert 4 is pressed. Next, the locking insert 4 and the locking sleeve rod 6 are inserted into the assembly sleeve 5 and the locking rod 1 from both sides of the assembly sleeve 5, and one end of the locking insert 4 is inserted into the locking sleeve rod 6. Finally, the lever 8 is released, so that the lever 8 is automatically inserted into the inside of the locking sleeve rod 6 under the support of the support spring 11. At this time, the locking sleeve rod 6 and the locking insert 4 are stably connected, and the drill pipe body 3 will not have the problem of reverse rotation.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined drill rod anti-loosening connection structure, comprising a drill rod body (3), wherein a threaded connector (2) is integrally connected to one end of the drill rod body (3), characterized in that: The threaded connector (2) is integrally connected with a locking rod (1), and the other end of the drill rod body (3) is integrally connected with an assembly sleeve (5). The drill rod body (3) is provided with multiple screws. The threaded connector (2) and the assembly sleeve (5) are threadedly connected. The two sides of the assembly sleeve (5) are respectively inserted with a locking rod (4) and a locking sleeve rod (6). One end of the locking rod (4) passes through the locking rod (1) and is inserted into the locking sleeve rod (6). A lever (8) is slidably connected inside the locking rod (4). One end of the lever (8) is fixedly connected with a locking pin (7). One end of the locking pin (7) passes through the locking rod (4) and is inserted into the locking sleeve rod (6).

2. The combined drill pipe anti-loosening connection structure according to claim 1, characterized in that: Both sides of the assembly sleeve (5) are provided with through holes, and the length of the assembly sleeve (5) is equal to the total length of the threaded connector (2) and the locking rod (1).

3. The combined drill pipe anti-loosening connection structure according to claim 1, characterized in that: The diameter of the locking rod (4) near the locking sleeve (6) is smaller than the diameter of the locking rod (4) away from the locking sleeve (6). The locking rod (4) is a hollow structure, and the other end of the locking rod (4) is an open structure.

4. The combined drill pipe anti-loosening connection structure according to claim 1, characterized in that: The inner wall of the locking rod (4) is fixedly connected to a fixing block (9), and one end of the fixing block (9) is fixedly connected to a limit rod (10) and a support spring (11).

5. The combined drill pipe anti-loosening connection structure according to claim 4, characterized in that: The limiting rod (10) and the support spring (11) are symmetrically distributed about the bisector of the fixed block (9), and one end of the support spring (11) is fixedly connected to the dial plate (8).

6. The combined drill pipe anti-loosening connection structure according to claim 1, characterized in that: The locking post (7) and the dial plate (8) are integrally connected. The locking post (7) and the dial plate (8) are provided with round holes, and the round holes correspond to the positions of the limiting rod (10).

7. The combined drill pipe anti-loosening connection structure according to claim 1, characterized in that: The locking post (7) and the limiting rod (10) form a sliding connection, and the length of the limiting rod (10) is greater than the total length of the locking post (7) and the lever (8).

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