Quick-release type drill rod connecting structure for mine drilling

Abstract

The utility model discloses a quick release type drill rod connecting structure for mine drilling, which comprises a first drill rod and a second drill rod, the outer surface of the first drill rod is provided with a first external thread, and the outer surface of the second drill rod is provided with a second external thread; a hexagonal limiting block is fixedly connected to the outer surface of the first drill rod, a connecting sleeve is arranged on the outer surface of the first drill rod, and a limiting ring is arranged on the outer surface of the second drill rod. According to the quick-release type drill rod connecting structure for mine drilling, through the arrangement of the connecting sleeve, the clamping block, the clamping groove, the spring, the first clamping ring and the second clamping ring, when the connecting sleeve rotates, the clamping block can be driven to contract through the arrangement of the telescopic rod, the clamping block can contract into the cavity, and then when a proper distance is reached, the clamping block can be detached through the counter-acting force of the spring; and the telescopic rod can be driven to rebound, so that the clamping block can be pushed to be connected with the clamping groove in an inserted mode, and the first drill rod and the second drill rod can be fixedly connected.

Description

Technical Field

[0001] This utility model relates to the field of drill pipe technology, and in particular to a quick-release drill pipe connection structure for mining drilling. Background Technology

[0002] Drill pipe is a steel pipe with threads at the tail or a rod with blades and flanges, used to connect surface equipment and drilling equipment or bottom hole devices located at the bottom of the well (hole). The purpose of drill pipe is to transport drilling mud (soil) to the drill bit and, together with the drill bit, raise, lower, or rotate the bottom hole device. Drill pipe must be able to withstand enormous internal and external pressure, torsion, bending, and vibration. In exploration, foundation construction, oil and gas development, and refining operations, drill pipe can be reused multiple times. Conventional drill pipe connections use threaded, flanged, or bolted connections, which are complex and slow to operate. In oil and gas extraction or pile foundation construction, drilling operations are required, and drilling rigs are used for drilling operations. Drill pipe is part of the drilling rig and is used to connect the drilling rig's surface equipment and the drilling equipment or bottom hole devices located at the bottom of the well. The purpose of drill pipe is to transport drilling mud to the drill bit and, together with the drill bit, raise, lower, or rotate the bottom hole device. Drill pipe must be able to withstand enormous internal and external pressure, torsion, bending, and vibration.

[0003] However, during the connection process of the drill rod, there was no stable limit to the drill rod and no protection for the drill rod. Although the snap-fit ​​assembly method is quick, it is easy to damage the drill rod. Therefore, it is necessary to design a quick-release drill rod connection structure for mining drilling. Utility Model Content

[0004] The main purpose of this utility model is to provide a quick-release drill rod connection structure for mining drilling, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A quick-release drill rod connection structure for mining drilling includes a first drill rod and a second drill rod. The outer surface of the first drill rod is provided with a first external thread, and the outer surface of the second drill rod is provided with a second external thread. A hexagonal limiting block is fixedly connected to the outer surface of the first drill rod. A connecting sleeve is provided on the outer surface of the first drill rod, and a limiting ring is provided on the outer surface of the second drill rod. The connecting sleeve is threadedly connected to both the first and second external threads.

[0007] The present invention is further configured such that: the limiting ring includes a first retaining ring and a second retaining ring, the outer surface of the first retaining ring is provided with a fastening pin, the outer surface of the second retaining ring is provided with a fastening nut, and the fastening nut and the fastening pin are threadedly connected.

[0008] By adopting the above technical solution, the first retaining ring and the second retaining ring can be connected by fastening nails and fastening nuts, thereby achieving the purpose of fixation.

[0009] The present invention is further configured such that: both the outer surfaces of the first drill rod and the second drill rod are provided with slots.

[0010] By adopting the above technical solution, the slot design facilitates the insertion of the card block and the fixing of the first and second drill rods.

[0011] The present invention is further configured such that: a cavity is formed on the outer surface of the connecting sleeve, a telescopic rod is fixedly connected to the inner wall of the cavity, a locking block is fixedly connected to one end of the telescopic rod, and the locking block is inserted into the locking groove.

[0012] By adopting the above technical solution, the extension rod can be used to extend and retract the locking block, thereby facilitating the insertion and connection of the locking block with the locking slot.

[0013] The present invention is further configured such that: a spring is provided on the outer surface of the telescopic rod, one end of the spring is fixedly connected to the cavity, and one end of the spring is fixedly connected to the locking block.

[0014] By adopting the above technical solution, the spring can be made to have elastic force through the fixed connection between the spring, the cavity, and the locking block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In this invention, the connecting sleeve, locking block, locking groove, spring, first locking ring, and second locking ring are configured such that when the connecting sleeve rotates, the telescopic rod can cause the locking block to retract, allowing it to retract into the cavity. When a suitable distance is reached, the reaction force of the spring can cause the telescopic rod to rebound, thereby pushing the locking block into the locking groove for insertion. This allows the first drill rod and the second drill rod to be fixedly connected. After the connecting sleeve connects the first drill rod and the second drill rod, the first locking block and the second locking ring are fitted onto the outer surface of the second drill rod, tightly pressing the outer surfaces of the first locking block and the second locking ring against the connecting sleeve. Then, fastening pins are passed through the first locking ring and the second locking ring, and the fastening nuts are tightened with tools to fix the first locking ring and the second locking ring. This provides support for the connecting sleeve and prevents it from slipping. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is a schematic diagram of the card slot structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the limiting ring structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the connecting sleeve structure of this utility model.

[0021] In the diagram: 1. First drill rod; 2. Second drill rod; 3. First external thread; 4. Second external thread; 5. Hexagonal limiting block; 6. Connecting sleeve; 7. Limiting ring; 8. First retaining ring; 9. Second retaining ring; 10. Fastening pin; 11. Fastening nut; 12. Slot; 13. Cavity; 14. Telescopic rod; 15. Locking block; 16. Spring. Detailed Implementation

[0022] 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.

[0023] like Figure 1-4 As shown, a quick-release drill rod connection structure for mining drilling includes a first drill rod 1 and a second drill rod 2. The outer surface of the first drill rod 1 is provided with a first external thread 3, and the outer surface of the second drill rod 2 is provided with a second external thread 4.

[0024] In this embodiment, a hexagonal limiting block 5 is fixedly connected to the outer surface of the first drill rod 1, a connecting sleeve 6 is provided on the outer surface of the first drill rod 1, a limiting ring 7 is provided on the outer surface of the second drill rod 2, and the connecting sleeve 6 is threadedly connected to the first external thread 3 and the second external thread 4.

[0025] In practical use, the first drill rod 1 and the second drill rod 2 can be easily connected by rotating the connecting sleeve 6, and the hexagonal limiting block 5 can limit the connecting sleeve 6. The limiting ring 7 can support the connecting sleeve 6.

[0026] In this embodiment, the limiting ring 7 includes a first retaining ring 8 and a second retaining ring 9. The outer surface of the first retaining ring 8 is provided with a fastening pin 10, and the outer surface of the second retaining ring 9 is provided with a fastening nut 11. The fastening nut 11 and the fastening pin 10 are threadedly connected.

[0027] In practical use, after the connecting sleeve 6 connects the first drill rod 1 and the second drill rod 2, the first locking block 8 and the second locking ring 9 are placed on the outer surface of the second drill rod 2, and the outer surfaces of the first locking block 8 and the second locking ring 9 are tightly pressed against the connecting sleeve 6. Then, the fastening nail 10 is passed through the first locking ring 8 and the second locking ring 9, and the fastening nut 11 is tightened with a tool to fix the first locking ring 8 and the second locking ring 9, thereby using the first locking ring 8 and the second locking ring 9 to support the connecting sleeve 6 and prevent the connecting sleeve 6 from slipping off.

[0028] In this embodiment, the outer surfaces of both the first drill rod 1 and the second drill rod 2 are provided with slots 12.

[0029] In practical use, the slot 12 facilitates the insertion of the card block 15, making it easy to fix the first drill rod 1 and the second drill rod 2.

[0030] In this embodiment, a cavity 13 is provided on the outer surface of the connecting sleeve 6, and a telescopic rod 14 is fixedly connected to the inner wall of the cavity 13. A locking block 15 is fixedly connected to one end of the telescopic rod 14, and the locking block 15 is inserted into the locking groove 12.

[0031] In practical use, when the connecting sleeve 6 rotates, the telescopic rod 14 can cause the locking block 15 to retract, so that the locking block 15 can retract into the cavity 13. When the appropriate distance is reached, the reaction force of the spring 16 can cause the telescopic rod 14 to rebound, thereby pushing the locking block 15 into the slot 12 to be inserted, so that the first drill rod 1 and the second drill rod 2 can be fixedly connected.

[0032] In this embodiment, a spring 16 is provided on the outer surface of the telescopic rod 14. One end of the spring 16 is fixedly connected to the cavity 13, and the other end of the spring 16 is fixedly connected to the locking block 15.

[0033] In practical use, the fixed connection between the spring 16 and the cavity 13 and the locking block 15 enables the spring 16 to have elastic force.

[0034] Working principle: During use, when the connecting sleeve 6 rotates, the telescopic rod 14 can cause the locking block 15 to retract, allowing the locking block 15 to retract into the cavity 13. When the appropriate distance is reached, the reaction force of the spring 16 can cause the telescopic rod 14 to rebound, thereby pushing the locking block 15 into the slot 12 for insertion, thus fixing the first drill rod 1 and the second drill rod 2. After the connecting sleeve 6 has connected the first drill rod 1 and the second drill rod 2, the first locking block 8 and the second retaining ring 9 are placed on the outer surface of the second drill rod 2, tightly pressing the outer surfaces of the first locking block 8 and the second retaining ring 9 against the connecting sleeve 6. Then, the fastening nail 10 is passed through the first retaining ring 8 and the second retaining ring 9, and the fastening nut 11 is tightened with a tool to fix the first retaining ring 8 and the second retaining ring 9, thereby using the first retaining ring 8 and the second retaining ring 9 to support the connecting sleeve 6 and prevent the connecting sleeve 6 from slipping.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quick-release drill rod connection structure for mining drilling, comprising a first drill rod (1) and a second drill rod (2), characterized in that: The outer surface of the first drill rod (1) is provided with a first external thread (3), and the outer surface of the second drill rod (2) is provided with a second external thread (4); The outer surface of the first drill rod (1) is fixedly connected with a hexagonal limiting block (5), the outer surface of the first drill rod (1) is provided with a connecting sleeve (6), the outer surface of the second drill rod (2) is provided with a limiting ring (7), and the connecting sleeve (6) is threadedly connected to the first external thread (3) and the second external thread (4).

2. The quick-release drill pipe connection structure for mining drilling according to claim 1, characterized in that: The limiting ring (7) includes a first retaining ring (8) and a second retaining ring (9). The outer surface of the first retaining ring (8) is provided with a fastening pin (10), and the outer surface of the second retaining ring (9) is provided with a fastening nut (11). The fastening nut (11) and the fastening pin (10) are threadedly connected.

3. The quick-release drill pipe connection structure for mining drilling according to claim 1, characterized in that: The outer surfaces of the first drill rod (1) and the second drill rod (2) are both provided with slots (12).

4. The quick-release drill pipe connection structure for mining drilling according to claim 1, characterized in that: The outer surface of the connecting sleeve (6) is provided with a cavity (13), and a telescopic rod (14) is fixedly connected to the inner wall of the cavity (13). One end of the telescopic rod (14) is fixedly connected to a locking block (15), and the locking block (15) is inserted into the locking groove (12).

5. The quick-release drill rod connection structure for mining drilling according to claim 4, characterized in that: A spring (16) is provided on the outer surface of the telescopic rod (14). One end of the spring (16) is fixedly connected to the cavity (13), and the other end of the spring (16) is fixedly connected to the locking block (15).

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