Cable-through drill pipe for a micro plug

Abstract

The utility model relates to a cable-through drill rod of micro plug, including cable-through drill rod middle rod, cable-through drill rod female head, plastic tube, cable-through copper core, plastic female head, female head inner copper core, male head inner copper core, plastic male head and cable-through drill rod male head, cable-through drill rod female head (2) and cable-through drill rod male head (16) are fixedly connected in the both ends of cable-through drill rod middle rod (1) respectively, the inside of cable-through drill rod middle rod (1) is linked with the inside of cable-through drill rod female head (2) and cable-through drill rod male head (16) communication. The outside of cable-through copper core (5) adopts plastic tube (4 and carries out fixed sealing package. The utility model discloses on the market cable-through drill rod, and the drill rod inner diameter is big, and the water -through performance is strengthened, and the cable-through drill rod female head and the cable-through drill rod male head change its thread, and the connection is firm and reliable, ensures firm and reliable in the process of drilling construction.

Description

[0001] This application is a divisional application. The original application has the application number 202520302150.1 and the application date is February 25, 2025. The subject matter of the original application is "A cable-carrying drill rod with a miniature plug". Technical Field

[0002] This utility model relates to the field of cable drill rod technology, specifically a cable drill rod with a miniature plug. Background Technology

[0003] Cable-through drill pipe is a special type of drill pipe used in directional drilling. It not only has the function of ordinary drill pipe in transmitting torque and axial force to achieve drilling, but also allows signal cables (used to transmit downhole measurement data and other signals) to pass through the inside of the drill pipe, thereby ensuring signal transmission between downhole measuring instruments (such as drilling rigs) and surface equipment during the drilling process.

[0004] Cable-through drill rods, as a special type of drill rod used in directional drilling, play a crucial role. However, existing cable-through drill rods suffer from low threaded connection strength and poor wear resistance, as well as inconvenient disassembly and maintenance due to the way the insulated head is connected, resulting in certain inconveniences. Based on this, a cable-through drill rod with a miniature plug is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a cable-connecting drill rod with a miniature plug to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the inventors provide a miniature plug-type cable-connecting drill rod, comprising: a cable-connecting drill rod middle rod, a cable-connecting drill rod female head, a plastic tube, a cable-connecting copper core, a plastic female head, an inner copper core of the female head, an inner copper core of the male head, a plastic male head, and a cable-connecting drill rod male head.

[0007] The female and male ends of the cable-through drill rod are fixedly connected to both ends of the middle rod of the cable-through drill rod, and the interior of the middle rod of the cable-through drill rod is connected to the interior of the female and male ends of the cable-through drill rod.

[0008] The plastic tube is fitted inside the middle rod of the cable-connecting drill rod. Both ends of the plastic tube extend into the female and male ends of the cable-connecting drill rod, respectively. One end of the female plastic tube is threaded to one end of the female plastic tube. The copper core inside the female plastic tube is movably inserted into the end of the female plastic tube away from the plastic tube. Both ends of the copper core are threaded, and one end of the copper core inside the female plastic tube and one end of the copper core are connected by threads. The copper core is fitted inside the plastic tube. The end of the copper core away from the copper core inside the female plastic tube extends into the male plastic tube. One end of the male plastic tube is movably inserted into the end of the plastic tube. The copper core inside the male plastic tube is movably fitted inside the male plastic tube, and the copper core inside the male plastic tube is threaded to one end of the copper core. A second water-connecting ring is fitted onto the outer side of the male plastic tube, and a first water-connecting ring is fitted onto the outer side of the female plastic tube.

[0009] The copper core of the cable is fixed and sealed with a plastic tube.

[0010] Furthermore, the female end of the cable-connecting drill rod has a trapezoidal thread inside at the end away from the middle rod of the cable-connecting drill rod, and the male end of the cable-connecting drill rod has a trapezoidal thread that matches the female end of the cable-connecting drill rod at the end away from the middle rod of the cable-connecting drill rod, and the specifications and dimensions of the female end of the cable-connecting drill rod match the specifications and dimensions of the male end of the cable-connecting drill rod.

[0011] Furthermore, the outer side of the second water-passing ring is sleeved on the inner side of the male end of the cable-passing drill rod, and the outer side of the first water-passing ring is sleeved on the inner side of the female end of the cable-passing drill rod.

[0012] Furthermore, the dimensions of the end of the plastic female connector away from the plastic tube are compatible with the dimensions of the end of the plastic male connector away from the plastic tube, and the dimensions of the copper core inside the female connector are compatible with the dimensions of the copper core inside the male connector.

[0013] Furthermore, the inner copper core of the female connector has an internal thread at one end, and the inner copper core of the male connector also has an internal thread at one end.

[0014] Furthermore, the triangular protective rubber sleeve is fitted inside the middle rod of the cable-connecting drill rod, and the plastic tube is fitted inside the triangular protective rubber sleeve.

[0015] Furthermore, two rubber pads are movably installed at one end of the plastic male connector on the opposite side of the inside of the plastic tube.

[0016] Furthermore, two rubber pads are movably installed on the opposite side of the plastic female head away from the inner copper core and inside the plastic tube.

[0017] Furthermore, one end of the plastic male connector is movably engaged with two O-rings (first type) via a groove, and the other end of the plastic male connector is movably fitted with two O-rings (second type) via a groove.

[0018] Furthermore, the plastic male connector is sealed to the inner wall of the plastic tube by an O-ring; the specifications and dimensions of the plastic male connector and the O-ring are adapted to the specifications and dimensions of the inner side of the plastic female connector.

[0019] Unlike existing technologies, the above technical solution has the following advantages: Compared with cable-operated drill rods on the market, the drill rod of this utility model has a larger inner diameter and enhanced water flow performance;

[0020] The threads of the female and male ends of the through-cable drill rod are modified to ensure a firm and reliable connection, guaranteeing a secure and reliable drilling process.

[0021] The copper cores inside the female and male connectors are plug-in type, which simplifies the structure, increases efficiency and sealing, and improves maintenance convenience. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the internal structure of the cable-connecting drill rod head assembly of this utility model.

[0023] Figure 2 This is a schematic diagram of the internal structure of the male connector assembly of the cable-connecting drill rod of this utility model.

[0024] Figure 3 This is a three-dimensional structural diagram of the rubber pad of this utility model.

[0025] Figure 4 This is a three-dimensional structural diagram of the water-passing ring of this utility model.

[0026] Figure 5 This is a schematic diagram of the three-dimensional appearance structure of the triangular protective rubber of this utility model.

[0027] Figure 6 This is a schematic diagram of the three-dimensional appearance structure of the copper core of the cable of this utility model.

[0028] Figure 7 This is a schematic diagram showing the three-dimensional appearance and cross-sectional internal structure of the copper core inside the male connector of this utility model.

[0029] Figure 8 This is a schematic diagram showing the three-dimensional appearance and cross-sectional internal structure of the copper core inside the female connector of this utility model.

[0030] Figure 9 This is a schematic diagram showing the three-dimensional appearance and planar perspective structure of the plastic male connector of this utility model.

[0031] Figure 10 This is a planar perspective view of the plastic female head structure of this utility model.

[0032] Figure 11 This is a schematic diagram of the three-dimensional appearance and planar structure of the male end of the cable-connecting drill rod of this utility model.

[0033] Figure 12 This is a schematic diagram showing the three-dimensional appearance and planar perspective structure of the female head of the cable-connecting drill rod of this utility model.

[0034] Figure 13 This is a schematic diagram showing the three-dimensional appearance and planar perspective structure of the middle rod of the cable-connecting drill rod of this utility model.

[0035] In the diagram: 1. Cable-through drill rod center rod; 2. Cable-through drill rod female head; 3. Triangular protective rubber; 4. Plastic tube; 5. Cable-through copper core; 6. Plastic female head; 7. Water ring one; 8. Rubber pad one; 9. Copper core inside the female head; 10. Rubber pad two; 11. O-ring one; 12. O-ring two; 13. Copper core inside the male head; 14. Plastic male head; 15. Water ring two; 16. Cable-through drill rod male head. Detailed Implementation

[0036] 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.

[0037] Please see Figures 1-13 This utility model provides a technical solution: a miniature plug cable drill rod, comprising: a cable drill rod middle rod (1), a cable drill rod female head (2), a plastic tube (4), a cable copper core (5), a plastic female head (6), a female head inner copper core (9), a male head inner copper core (13), a plastic male head (14), and a cable drill rod male head (16).

[0038] The female head (2) and male head (16) of the cable drill rod are fixedly connected to both ends of the middle rod (1) of the cable drill rod, and the interior of the middle rod (1) of the cable drill rod is connected to the interior of the female head (2) and male head (16) of the cable drill rod.

[0039] The plastic tube (4) is sleeved inside the middle rod (1) of the cable-connecting drill rod. Both ends of the plastic tube (4) extend into the female end (2) and male end (16) of the cable-connecting drill rod, respectively. One end of the plastic female end (6) is threaded to one end of the plastic tube (4). The copper core (9) inside the female end is movably inserted into the end of the plastic female end (6) away from the plastic tube (4). Both ends of the cable-connecting copper core (5) are threaded, and one end of the copper core (9) inside the female end and one end of the cable-connecting copper core (5) are connected by threads. The male plastic connector (14) is fitted inside the plastic tube (4). The end of the copper core (5) away from the inner copper core (9) of the female connector extends into the interior of the plastic male connector (14). One end of the plastic male connector (14) is movably inserted into the interior of one end of the plastic tube (4). The inner copper core (13) of the male connector is movably fitted inside the plastic male connector (14), and the inner copper core (13) of the male connector is threadedly connected to one end of the copper core (5). A second water-passing ring (15) is fitted on the outside of the plastic male connector (14), and a first water-passing ring (7) is fitted on the outside of the plastic female connector (6).

[0040] The copper core (5) of the cable is fixed and sealed by a plastic tube (4).

[0041] The working principle of the above technical solution is as follows: the drill pipes are connected by two insulating joints with pins. On the same drill pipe assembly, the plastic male head 14 and the plastic female head 6 are connected by a copper core 5, and their internal copper joints are connected to realize the data transmission function.

[0042] In another implementation scheme, such as Figure 1 , Figure 2 and Figure 11 , Figure 12 As shown, the female end of the cable-connecting drill rod (2) has a trapezoidal thread at the end away from the middle rod (1), and the male end of the cable-connecting drill rod (16) has a trapezoidal thread that matches the female end of the cable-connecting drill rod (2) at the end away from the middle rod (1). The dimensions of the female end of the cable-connecting drill rod (2) are compatible with the dimensions of the male end of the cable-connecting drill rod (16). The trapezoidal threads are all increased in depth.

[0043] Both the female end 2 and the male end 16 of the through-cable drill pipe adopt trapezoidal threads, and the thread depth is increased to improve the strength and wear resistance of the screw connection.

[0044] In another implementation scheme, such as Figure 1 , Figure 2 and Figure 4 As shown, the outer side of the second water ring (15) is sleeved on the inner side of the male end (16) of the cable drill rod, and the outer side of the first water ring (7) is sleeved on the inner side of the female end (2) of the cable drill rod.

[0045] The positions of the water-passing ring 17 and water-passing ring 215 fixing plastic pipe 4 are inside the female end 2 and male end 16 of the cable-passing drill rod, and provide a channel for flow guidance while providing support, facilitating limiting and conduction.

[0046] More preferably, the dimensions of the first water ring 7 are compatible with the dimensions of the second water ring 15. The first water ring 7 is movably engaged on the opposite side of the plastic female head 6 and the female head 2 of the cable drill rod, and the second water ring 15 is movably engaged on the opposite side of the plastic male head 14 and the male head 16 of the cable drill rod.

[0047] In another embodiment, the dimensions of the end of the plastic female connector (6) away from the plastic tube (4) are adapted to the dimensions of the end of the plastic male connector (14) away from the plastic tube (4), and the dimensions of the copper core (9) inside the female connector are adapted to the dimensions of the copper core (13) inside the male connector.

[0048] The drill pipes are connected by two insulated connectors with pins, and the internal copper connectors are connected to achieve data transmission. On the same drill pipe assembly, the plastic male connector 14 and the plastic female connector 6 are connected by a copper core 5.

[0049] In another embodiment, the dimensions of the plastic male connector 14 and the O-ring 2 12 are adapted to the dimensions of the inner side of the plastic female connector 6.

[0050] In another embodiment, the inner copper core (9) of the female head is provided with an internal thread at one end, and the inner copper core (13) of the male head is provided with an internal thread at one end.

[0051] In another embodiment, the triangular protective rubber (3) is fitted inside the middle rod (1) of the cable drill rod, and the plastic tube (4) is fitted inside the triangular protective rubber (3).

[0052] A suitably sized triangular protective rubber sheet 3 is placed on the outside of the plastic pipe 4 to fix it and prevent it from shaking during normal drilling. The internal passage of the cable-connecting drill rod 1 is supported by the triangular protective rubber sheet 3. The internal passage of the female head 2 of the cable-connecting drill rod is connected by a water ring 7, and the internal passage of the male head 16 of the cable-connecting drill rod is connected by a water ring 15, providing support for both the internal and external passages and leaving a passage for flow guidance and sealing.

[0053] In another embodiment, two rubber pads (10) are movably mounted on one end of the plastic male connector (14) to the opposite side of the interior of the plastic tube (4). In another embodiment, two rubber pads (8) are movably mounted on the end of the plastic female connector (6) away from the copper core (9) inside the female connector to the opposite side of the interior of the plastic tube (4). Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, the dimensions of rubber pad 8 are compatible with those of rubber pad 10, and the dimensions of rubber pad 8 and rubber pad 10 are compatible with those of the copper core 5 and the plastic tube 4. The copper core 5 is externally secured and sealed with plastic tube 4, rubber pad 8, and rubber pad 10 to prevent water ingress from affecting signal communication.

[0054] The copper core 5 of the cable is fixed and sealed with plastic tube 4, rubber pad 8 and rubber pad 10 to prevent water from entering and affecting signal communication.

[0055] In another embodiment, one end of the plastic male connector (14) is movably engaged with two O-rings (11) via a groove, and the other end of the plastic male connector (14) is movably engaged with two O-rings (12) via a groove.

[0056] In another embodiment, the plastic male connector (14) is sealed to the inner wall of the plastic tube (4) by an O-ring (11).

[0057] Please see Figures 1-13This utility model provides another technical solution: a miniature plug-type cable-connecting drill rod, comprising a cable-connecting drill rod middle rod 1, a cable-connecting drill rod female head 2, a triangular protective rubber 3, a plastic tube 4, a cable-connecting copper core 5, a plastic female head 6, a female head inner copper core 9, a male head inner copper core 13, a plastic male head 14, and a cable-connecting drill rod male head 16. The cable-connecting drill rod female head 2 and the cable-connecting drill rod male head 16 are respectively fixedly connected to both ends of the cable-connecting drill rod middle rod 1. The triangular protective rubber 3 is sleeved inside the cable-connecting drill rod middle rod 1. The material tube 4 is fitted inside the triangular protective rubber 3. Both ends of the plastic tube 4 extend into the interior of the female end 2 and the male end 16 of the cable-connecting drill rod, respectively. One end of the female end 6 is provided with an external thread, and the outer side of one end of the female end 6 is threadedly connected to the inner side of one end of the plastic tube 4. The copper core 9 inside the female end is movably inserted into the interior of the end of the female end 6 away from the plastic tube 4. Both ends of the cable-connecting copper core 5 are provided with threads, and the interior of one end of the copper core 9 inside the female end and the outer side of one end of the cable-connecting copper core 5 are connected by a thread. The threads are connected, with the copper core 5 of the cable sleeved inside the plastic tube 4. The end of the copper core 5 away from the inner copper core 9 of the female connector extends into the interior of the plastic male connector 14. One end of the plastic male connector 14 is movably inserted into the interior of one end of the plastic tube 4. Two rubber pads 10 are movably installed on the opposite side of the plastic male connector 14 and the interior of the plastic tube 4. Two rubber pads 8 are movably installed on the opposite side of the plastic female connector 6 and the interior of the plastic tube 4. The outer side of the plastic male connector 14... A water-passing ring 15 is fitted onto the outer side of the plastic female head 6, and a water-passing ring 7 is fitted onto the outer side of the plastic male head 6. One end of the plastic male head 14 is movably connected to two O-rings 11 through a groove, and the other end of the plastic male head 14 is movably fitted with two O-rings 12 through a groove. The plastic male head 14 is sealed to the inner wall of the plastic tube 4 through the O-rings 11. The copper core 13 inside the male head is movably fitted into the inside of the plastic male head 14, and the inside of the copper core 13 inside the male head is threadedly connected to the outer side of one end of the cable-passing copper core 5.

[0058] The working principle of the above technical solution is as follows: The drill rods are connected by two insulating joints with internal copper connectors to realize data transmission. Both the female and male ends of the cable-connected drill rods 2 and 16 adopt trapezoidal threads with increased thread depth to improve the strength and wear resistance of the screw connection. On the same drill rod assembly, the plastic male end 14 and the plastic female end 6 are connected by a cable-connected copper core 5. The cable-connected copper core 5 is fixed and sealed by a plastic tube 4, rubber gasket 1 8 and rubber gasket 2 10 to prevent water ingress from affecting signal communication.

[0059] In another implementation scheme, such as Figure 1 , Figure 2 and Figure 11 , Figure 12As shown, the female end of the cable drill rod 2, located away from the middle rod 1 of the cable drill rod, has a trapezoidal thread inside. The male end of the cable drill rod 16, located away from the middle rod 1 of the cable drill rod, has a trapezoidal thread that matches the female end of the cable drill rod 2. The specifications and dimensions of the female end of the cable drill rod 2 and the male end of the cable drill rod 16 are compatible. The depth of the trapezoidal thread is increased.

[0060] Both the female end 2 and the male end 16 of the through-cable drill pipe adopt trapezoidal threads, and the thread depth is increased to improve the strength and wear resistance of the screw connection.

[0061] In another implementation scheme, such as Figure 1 , Figure 2 and Figure 4 As shown, the outer side of the water-passing ring 15 is fitted onto the inner side of the male end of the cable-passing drill rod 16, and the outer side of the water-passing ring 7 is fitted onto the inner side of the female end of the cable-passing drill rod 2. The specifications and dimensions of the water-passing ring 7 are compatible with those of the water-passing ring 15. The water-passing ring 7 is movably engaged on the opposite side of the plastic female end 6 and the female end of the cable-passing drill rod 2, and the water-passing ring 15 is movably engaged on the opposite side of the plastic male end 14 and the male end of the cable-passing drill rod 16.

[0062] The positions of the water-passing ring 17 and water-passing ring 215 fixing plastic pipe 4 are inside the female end 2 and male end 16 of the cable-passing drill rod, providing a channel for flow guidance while supporting the pipe, facilitating limiting and conduction.

[0063] In another implementation scheme, such as Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, the dimensions of rubber pad 8 are compatible with those of rubber pad 10, and the dimensions of rubber pad 8 and rubber pad 10 are compatible with those of the copper core 5 and plastic tube 4.

[0064] The copper core 5 of the cable is fixed and sealed with plastic tube 4, rubber pad 1 8 and rubber pad 2 10 to prevent water from entering and affecting signal communication. A triangular protective rubber sheet of appropriate length is placed on the outside of the plastic tube 4 to fix the plastic tube 4 and prevent the plastic tube 4 from shaking during normal construction drilling.

[0065] In another implementation scheme, such as Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, the dimensions of the end of the plastic female connector 6 away from the plastic tube 4 are compatible with the dimensions of the end of the plastic male connector 14 away from the plastic tube 4. The dimensions of the inner copper core 9 of the female connector are compatible with the dimensions of the inner copper core 13 of the male connector. One end of the inner copper core 9 of the female connector has an internal thread, and one end of the inner copper core 13 of the male connector has an internal thread. The dimensions of the plastic male connector 14 and the O-ring 12 are compatible with the dimensions of the inner side of the plastic female connector 6.

[0066] The drill pipes are connected by two insulated connectors with pins, and the internal copper connectors are connected to achieve data transmission. On the same drill pipe assembly, the plastic male connector 14 and the plastic female connector 6 are connected by a copper core 5. The copper core 5 is fixed and sealed by a plastic tube 4, rubber pad 1 8 and rubber pad 2 10 to prevent water from entering and affecting signal communication.

[0067] In another implementation scheme, such as Figures 1-13 As shown, the interior of the middle rod 1 of the cable-through drill rod is connected to the interior of the female head 2 and the male head 16 of the cable-through drill rod.

[0068] The inner part of the cable-through drill rod 1 is supported by a triangular protective rubber 3 to guide the flow path. The inner part of the cable-through drill rod female head 2 is connected by a water-passing ring 7. The inner part of the cable-through drill rod male head 16 is connected by a water-passing ring 15, which provides support for the inner and outer parts and leaves a flow path to facilitate flow and sealing.

[0069] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable-carrying drill rod with a miniature plug, characterized in that, include: It includes the middle rod of the cable-through drill rod (1), the female head of the cable-through drill rod (2), the plastic tube (4), the copper core of the cable-through drill rod (5), the plastic female head (6), the inner copper core of the female head (9), the inner copper core of the male head (13), the plastic male head (14), and the male head of the cable-through drill rod (16). The female head (2) and male head (16) of the cable-through drill rod are fixedly connected to both ends of the middle rod (1) of the cable-through drill rod, and the interior of the middle rod (1) of the cable-through drill rod is connected to the interior of the female head (2) and male head (16) of the cable-through drill rod. The plastic tube (4) is sleeved inside the middle rod (1) of the cable drill rod. The two ends of the plastic tube (4) extend into the female end (2) and the male end (16) of the cable drill rod, respectively. One end of the plastic female end (6) is threaded to one end of the plastic tube (4). The copper core (9) inside the female end is movably inserted into the end of the plastic female end (6) away from the plastic tube (4). Both ends of the cable copper core (5) are threaded, and one end of the copper core (9) inside the female end and one end of the cable copper core (5) are connected by threads. The male plastic connector (14) is fitted inside the plastic tube (4). The end of the copper core (5) away from the inner copper core (9) of the female connector extends into the interior of the male plastic connector (14). One end of the male plastic connector (14) is movably inserted into the interior of one end of the plastic tube (4). The inner copper core (13) of the male connector is movably fitted inside the male plastic connector (14), and the inner copper core (13) of the male connector is threadedly connected to one end of the copper core (5). A second water-passing ring (15) is fitted on the outside of the male plastic connector (14), and a first water-passing ring (7) is fitted on the outside of the female plastic connector (6). The copper core (5) of the cable is fixed and sealed by a plastic tube (4).

2. The cable-carrying drill rod with a miniature plug according to claim 1, characterized in that: The female end of the cable drill rod (2) is provided with a trapezoidal thread at the end away from the middle rod (1) of the cable drill rod. The male end of the cable drill rod (16) is provided with a trapezoidal thread that matches the female end of the cable drill rod (2) at the end away from the middle rod (1) of the cable drill rod. The specifications and dimensions of the female end of the cable drill rod (2) match the specifications and dimensions of the male end of the cable drill rod (16).

3. The cable-passing drill rod with a miniature plug according to claim 1, characterized in that: The outer side of the second water ring (15) is sleeved on the inner side of the male end (16) of the cable drill rod, and the outer side of the first water ring (7) is sleeved on the inner side of the female end (2) of the cable drill rod.

4. The cable-carrying drill rod with a miniature plug according to claim 1, characterized in that: The dimensions of the end of the plastic female connector (6) away from the plastic tube (4) are compatible with the dimensions of the end of the plastic male connector (14) away from the plastic tube (4), and the dimensions of the copper core (9) inside the female connector are compatible with the dimensions of the copper core (13) inside the male connector.

5. The cable-carrying drill rod of the miniature plug according to claim 1, characterized in that: The inner copper core (9) of the female head has an internal thread at one end, and the inner copper core (13) of the male head has an internal thread at one end.

6. The cable-carrying drill rod with a miniature plug according to claim 1, characterized in that: It also includes a triangular protective rubber sheet (3), which is fitted inside the middle rod (1) of the cable drill rod, and the plastic tube (4) is fitted inside the triangular protective rubber sheet (3).

7. The cable-carrying drill rod with a miniature plug according to claim 1, characterized in that: Two rubber pads (10) are movably installed on one end of the plastic male head (14) and the opposite side inside the plastic tube (4).

8. The cable-carrying drill rod of the miniature plug according to claim 1, characterized in that: Two rubber pads (8) are movably installed on the opposite side of the plastic female head (6) away from the inner copper core (9) and inside the plastic tube (4).

9. The cable-carrying drill rod with a miniature plug according to claim 1, characterized in that: One end of the plastic male connector (14) is movably connected to two O-rings (11) through a groove, and the other end of the plastic male connector (14) is movably connected to two O-rings (12) through a groove.

10. The cable-carrying drill rod of the miniature plug according to claim 1, characterized in that: The plastic male connector (14) is sealed to the inner wall of the plastic tube (4) by O-ring one (11); the specifications and dimensions of the plastic male connector (14) and O-ring two (12) are adapted to the specifications and dimensions of the inner side of the plastic female connector (6).

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