High-strength outburst prevention drill rod

Abstract

The utility model discloses a high-strength outburst prevention drill rod which comprises a drill rod body, a rectangular inserting groove and a rectangular inserting rod. According to the high-strength outburst prevention drill rod, an external thread connector part is arranged at the end, close to a drill rod body, of the drill rod body, an internal thread connector part is arranged at the other end of the drill rod body, a rectangular shrinkage groove is formed in the head, corresponding to the internal thread connector part, of the drill rod body, and a rectangular insertion rod matched with the rectangular shrinkage groove is slidably connected into the rectangular shrinkage groove; a rectangular inserting groove is formed in the position, corresponding to the rectangular inserting rod, of the external thread connector part, a driving mechanism is arranged at the tail end, corresponding to the rectangular inserting rod, of the drill rod body, the outer side of the joint of the internal thread connector part and the external thread connector part is jointly sleeved with a reinforcing sleeve, and the drill rod body can be mutually spliced through matching of the internal thread connector part and the external thread connector part. During splicing, the driving mechanism can drive the rectangular insertion rod to extend out of the rectangular contraction groove, so that the rectangular insertion rod is inserted into the rectangular insertion groove, and rotation limitation is formed between the external thread connector part and the internal thread connector part.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically a high-strength anti-outburst drill rod. Background Technology

[0002] Coal drill rods are mining consumables and tool accessories. They are high-efficiency, twist-shaped drill rods used in coal seam drilling augers, typically made of high-quality carbon steel. Suitable for use with electric coal drills, they are an indispensable tool in coal mining.

[0003] Patent document CN206053866U discloses a high-strength anti-outburst drill rod for coal mining, including a drill rod body. The drill rod body of this utility model has three evenly distributed concave planes, with an arc-shaped protrusion formed between adjacent concave planes. The arc-shaped protrusion has an arc-shaped groove, which effectively reduces the resistance of the drill rod during use. Furthermore, this high-strength anti-outburst drill rod for coal mining has a reasonable structural design, a long service life, and is suitable for widespread use.

[0004] The existing high-strength anti-outburst drill rods connect multiple drill rods together via external and internal threads. During high-speed rotation of the drilling tool, the threads at the connection point generate significant torque when the drilling rig suddenly stops and accelerates, potentially damaging the threads. Furthermore, the threaded connection structure is relatively weak compared to the high-strength anti-outburst drill rod itself. Therefore, a new high-strength anti-outburst drill rod is proposed to optimize the existing technology. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength anti-burst drill pipe to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-strength anti-outburst drill pipe includes a drill pipe body made of 27% silicon manganese steel pipe. The drill pipe body is 1m long. One end of the drill pipe body near the drill pipe body has an external threaded connector, and the other end has an internal threaded connector. The internal threaded connector and the external threaded connector are compatible, and the drill pipe body can be spliced ​​together by the mating of the internal threaded connector and the external threaded connector. The length of the internal threaded connector and the external threaded connector is 10cm. Auxiliary cuts are provided at the ends of the drill pipe body near the internal threaded connector and the external threaded connector to facilitate the drilling of the drill pipe body. The drill rod body is screwed to facilitate the threaded connection between the two drill rod bodies. A rectangular contraction groove is opened at the head of the drill rod body corresponding to the internal thread joint. A rectangular insert rod that matches the internal thread joint is slidably connected in the rectangular contraction groove. A rectangular slot is opened at the external thread joint corresponding to the rectangular insert rod. The rectangular slot matches the rectangular insert rod. A drive mechanism is provided at the tail end of the drill rod body corresponding to the rectangular insert rod. A reinforcing sleeve is provided on the outer side of the connection between the internal thread joint and the external thread joint. The reinforcing sleeve is 30cm long and is made of 27 silicon manganese steel pipe. The reinforcing sleeve is also fitted on the outside of the drive mechanism and is fixedly installed with the drive mechanism.

[0008] As a further embodiment of this utility model: the driving mechanism includes a movable part, a threaded sleeve and a threaded rod, and a rectangular cavity adapted to the movable part is provided in the drill rod body, and a movable cavity adapted to the outer diameter of the threaded rod is provided in the drill rod body.

[0009] As a further embodiment of this utility model: the movable part is inserted into the rectangular cavity and slidably connected to the rectangular cavity. After the movable part is fully inserted into the rectangular cavity, its end face is flush with the outer wall of the drill rod body. The threaded rod is set in the movable cavity and penetrates the rectangular cavity. One end of the threaded rod is fixedly connected to the rectangular insertion rod. The threaded sleeve is threadedly connected to the outside of the threaded rod and corresponds to the rectangular cavity. The threaded sleeve is rotatably connected to the rectangular cavity.

[0010] As a further embodiment of this utility model: the inner side of the movable part is provided with a cavity, the threaded sleeve is disposed in the cavity and a gear is fixedly connected to its outer wall, and a rack is fixedly connected to the inner wall of the cavity at the location corresponding to the gear, and the rack meshes with the gear for transmission.

[0011] As a further improvement of this utility model: threaded holes are provided at both ends of the movable part, and mounting holes are provided at the corresponding threaded holes of the reinforcing sleeve.

[0012] As a further improvement of this utility model: a fixing bolt passes through both the mounting hole and the threaded hole, the fixing bolt is threadedly connected to the threaded hole, the mounting hole is a countersunk hole, and the bolt head of the fixing bolt can be partially recessed into the mounting hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, the drill rod body can be spliced ​​together by the cooperation of the internal threaded joint and the external threaded joint. During splicing, the rectangular insert rod can be driven by the drive mechanism to extend out of the rectangular contraction groove, so that the rectangular insert rod is inserted into the rectangular slot, thereby forming a rotation constraint between the external threaded joint and the internal threaded joint. When the drill rod body is rotating at high speed, the cooperation between the rectangular insert rod and the rectangular slot can bear part of the torque generated when the drilling machine stops suddenly and accelerates rapidly, thereby reducing the pressure at the connection of the two sets of drill rod bodies and increasing the service life of the drill rod body.

[0015] 2. In this utility model, the driving mechanism is driven by the movement of a movable part within a rectangular cavity. When the movable part moves within the rectangular cavity, it can drive the gear to rotate via a rack and pinion, thereby driving the threaded sleeve to rotate. In turn, it drives the rectangular insert rod to slide via the threaded rod. After the movable part is fully inserted into the rectangular cavity, it can be limited by a reinforcing sleeve. The reinforcing sleeve can be installed and fixed to the movable part via a fixing bolt. Thus, by installing the fixing bolt, the position of the movable part and the reinforcing sleeve can be fixed simultaneously. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a high-strength anti-outburst drill rod.

[0017] Figure 2 This is a diagram showing the assembly of a high-strength anti-outburst drill pipe.

[0018] Figure 3 This is an enlarged view of component A in a high-strength anti-outburst drill pipe.

[0019] Figure 4 This is a front view of a rectangular cavity in a high-strength anti-outburst drill pipe.

[0020] Figure 5 This is a diagram illustrating a high-strength anti-outburst drill pipe with a reinforcing sleeve.

[0021] Figure 6 This is a diagram illustrating a moving component in a high-strength anti-outburst drill pipe.

[0022] In the diagram: 1. Drill rod body; 2. External threaded connector; 3. Internal threaded connector; 4. Rectangular shrinkage groove; 5. Rectangular insert rod; 6. Rectangular slot; 7. Drive mechanism; 8. Reinforcing sleeve; 9. Moving part; 10. Threaded sleeve; 11. Threaded rod; 12. Rectangular cavity; 13. Moving cavity; 14. Hole; 15. Gear; 16. Rack; 17. Threaded hole; 18. Mounting hole; 19. Fixing bolt. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-6 In this embodiment of the present invention, a high-strength anti-outburst drill rod includes a drill rod body 1, which is made of 27% silicon manganese steel pipe. The length of the drill rod body 1 is 1m. One end of the drill rod body 1 near the drill rod body 1 is provided with an external threaded connector 2, and the other end of the drill rod body 1 is provided with an internal threaded connector 3. The internal threaded connector 3 and the external threaded connector 2 are adapted to each other, and the drill rod body 1 can be spliced ​​together by the cooperation of the internal threaded connector 3 and the external threaded connector 2. The length of the internal threaded connector 3 and the external threaded connector 2 is 10cm. Auxiliary cuts are opened at the ends of the drill rod body 1 near the internal threaded connector 3 and the external threaded connector 2, which facilitate the drilling of the drill rod body. The drill rod body 1 is screwed to facilitate the threaded connection between the two drill rod bodies 1. A rectangular shrinkage groove 4 is provided at the head of the drill rod body 1 corresponding to the internal threaded joint 3. A rectangular insert rod 5 that is adapted to it is slidably connected in the rectangular shrinkage groove 4. A rectangular slot 6 is provided at the external threaded joint 2 corresponding to the rectangular insert rod 5. The rectangular slot 6 is adapted to the rectangular insert rod 5. A drive mechanism 7 is provided at the tail end of the drill rod body 1 corresponding to the rectangular insert rod 5. A reinforcing sleeve 8 is provided on the outer side of the connection between the internal threaded joint 3 and the external threaded joint 2. The reinforcing sleeve 8 is 30cm long and is made of 27 silicon manganese steel pipe. The reinforcing sleeve 8 is also fitted on the outside of the drive mechanism 7 and is fixedly installed with the drive mechanism 7.

[0025] The drill pipe body 1 can be spliced ​​together by the internal threaded connector 3 and the external threaded connector 2. During splicing, the rectangular insert rod 5 can be driven by the drive mechanism 7 to extend out of the rectangular contraction groove 4, so that the rectangular insert rod 5 is inserted into the rectangular slot 6, thereby forming a rotation limit between the external threaded connector 2 and the internal threaded connector 3. When the drill pipe body 1 is rotating at high speed, the rectangular insert rod 5 and the rectangular slot 6 cooperate to bear part of the torque generated when the drilling machine stops suddenly and accelerates rapidly, thereby reducing the pressure at the connection of the two sets of drill pipe bodies 1 and increasing the service life of the drill pipe body 1.

[0026] The drive mechanism 7 includes a movable part 9, a threaded sleeve 10 and a threaded rod 11. A rectangular cavity 12 adapted to the movable part 9 is opened in the drill rod body 1, and a movable cavity 13 adapted to the outer diameter of the threaded rod 11 is opened in the drill rod body 1.

[0027] The movable part 9 is inserted into the rectangular cavity 12 and is slidably connected to the rectangular cavity 12. After the movable part 9 is fully inserted into the rectangular cavity 12, its end face is flush with the outer wall of the drill rod body 1. The threaded rod 11 is set in the movable cavity 13 and passes through the rectangular cavity 12. One end of the threaded rod 11 is fixedly connected to the rectangular insert rod 5. The threaded sleeve 10 is threadedly connected to the outside of the threaded rod 11 and corresponds to the rectangular cavity 12. The threaded sleeve 10 is rotatably connected to the rectangular cavity 12.

[0028] The inner side of the movable part 9 is provided with a cavity 14, the threaded sleeve 10 is disposed in the cavity 14 and a gear 15 is fixedly connected to its outer wall, and a rack 16 is fixedly connected to the inner wall of the cavity 14 corresponding to the gear 15, and the rack 16 meshes with the gear 15 for transmission.

[0029] Both ends of the movable part 9 are provided with threaded holes 17, and the reinforcing sleeve 8 is provided with mounting holes 18 corresponding to the threaded holes 17.

[0030] A fixing bolt 19 is inserted through both the mounting hole 18 and the threaded hole 17. The fixing bolt 19 is threadedly connected to the threaded hole 17. The mounting hole 18 is a countersunk hole, and the bolt head of the fixing bolt 19 can be partially recessed into the mounting hole 18.

[0031] The drive mechanism 7 is driven by the movable part 9 moving within the rectangular cavity 12. When the movable part 9 moves within the rectangular cavity 12, it can drive the gear 15 to rotate via the rack 16, thereby driving the threaded sleeve 10 to rotate, and then driving the rectangular insert rod 5 to slide via the threaded rod 11. After the movable part 9 is fully inserted into the rectangular cavity 12, it can be limited by the reinforcing sleeve 8. The reinforcing sleeve 8 can be installed and fixed to the movable part 9 via the fixing bolt 19. Thus, by installing the fixing bolt 19, the position fixation effect of the movable part 9 and the reinforcing sleeve 8 can be achieved simultaneously.

[0032] The working principle of this utility model is as follows:

[0033] In use, the drill rod body 1 is rotated with the aid of the cut, and the drill rod body 1 is spliced ​​together by the cooperation of the internal threaded joint (3) and the external threaded joint (2). At this time, the movable part 9 is squeezed so that the movable part 9 is fully inserted into the rectangular cavity 12. When the movable part 9 moves in the rectangular cavity 12, it can drive the gear 15 to rotate through the rack 16, thereby driving the threaded sleeve 10 to rotate, and then drive the rectangular insert 5 to slide through the threaded rod 11. The rectangular insert 5 extends out of the rectangular contraction groove 4, so that the rectangular insert 5 is inserted into the rectangular slot 6, thereby forming a rotation limit between the external threaded joint 2 and the internal threaded joint 3. At this time, the reinforcing sleeve is put on the outside of the connection of the drill rod body 1, so that the mounting hole 18 corresponds to the threaded hole 17, and is locked and fixed by the fixing bolt 19, thereby achieving the effect of reinforcing connection and fixed installation. When the drill rod body 1 is rotating at high speed, the rectangular insert 5 and the rectangular slot 6 cooperate to bear part of the torque generated when the drilling machine stops suddenly and accelerates rapidly, thereby reducing the pressure at the connection of the two sets of drill rod bodies 1 and increasing the service life of the drill rod body 1.

[0034] 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 high-strength outburst-preventing drill rod comprising a drill rod body (1), characterized in that: One end of the drill rod body (1) is provided with an external threaded joint (2), the other end of the drill rod body (1) is provided with an internal threaded joint (3), the internal threaded joint (3) is matched with the external threaded joint (2), the drill rod body (1) is provided with a rectangular shrinkage groove (4) at the head corresponding to the internal threaded joint (3), a rectangular plug rod (5) matched with the rectangular shrinkage groove (4) is slidably connected in the rectangular shrinkage groove (4), the external threaded joint (2) is provided with a rectangular insertion slot (6) corresponding to the rectangular plug rod (5), the rectangular insertion slot (6) is matched with the rectangular plug rod (5), the drill rod body (1) is provided with a driving mechanism (7) corresponding to the tail end of the rectangular plug rod (5), the external side of the joint of the internal threaded joint (3) and the external threaded joint (2) is jointly sleeved with a reinforcing sleeve (8), the reinforcing sleeve (8) is simultaneously sleeved on the external side of the driving mechanism (7) and is fixedly installed with the driving mechanism (7).

2. The high-strength, outburst-prevention drill rod of claim 1, wherein: The driving mechanism (7) comprises a movable piece (9), a threaded sleeve (10) and a threaded rod (11), the drill rod body (1) is provided with a rectangular cavity (12) matched with the movable piece (9), and the drill rod body (1) is provided with a movable cavity (13) matched with the outer diameter of the threaded rod (11).

3. The high-strength, outburst-prevention drill rod of claim 2, wherein: The movable piece (9) is inserted into the rectangular cavity (12) and is slidably connected with the rectangular cavity (12), the threaded rod (11) is arranged in the movable cavity (13) and penetrates through the rectangular cavity (12), one end of the threaded rod (11) is fixedly connected with the rectangular plug rod (5), the threaded sleeve (10) is threadedly connected on the outer side of the threaded rod (11) and corresponds to the rectangular cavity (12), and the threaded sleeve (10) is rotatably connected at the rectangular cavity (12).

4. The high-strength, outburst-prevention drill rod of claim 2, wherein: The inner side of the movable piece (9) is provided with a cavity (14), the threaded sleeve (10) is arranged in the cavity (14) and the outer wall thereof is fixedly connected with a gear (15), the inner wall of the cavity (14) is fixedly connected with a rack (16) corresponding to the gear (15), and the rack (16) is in meshing transmission with the gear (15).

5. The high strength, outburst resistant drill rod of claim 2, wherein: Threaded holes (17) are formed at both ends of the movable piece (9), and mounting holes (18) are formed in the reinforcing sleeve (8) corresponding to the threaded holes (17).

6. The high-strength, outburst-prevention drill rod of claim 5, wherein: Fixing bolts (19) are jointly penetrated in the mounting holes (18) and the threaded holes (17), and the fixing bolts (19) are threadedly connected with the threaded holes (17).

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