A drill rod butt joint structure of an automatic water detector for coal mines

Abstract

This invention discloses a drill rod docking structure for an automatic water exploration machine used in coal mines, including an intermediate tube, a connecting rod tail, a connecting rod head, and a connector. The front and rear ends of each intermediate tube are respectively fixed with a connecting rod head and a connecting rod tail. Adjacent intermediate tubes are docked through their connecting rod heads and tails, which are then positioned and fixed by the connector. In this structure, adjacent hollow tubes are connected by a tight fit between the jaws of a three-jaw connector and the groove of the connecting rod head. This avoids the use of threaded connections, thus eliminating issues such as difficulty in alignment, incomplete locking (e.g., insufficient thread rotation), and difficulty in disassembling and replacing drill rods. It also enables rapid docking, allowing workers to quickly repair drill rods within a specified time, significantly reducing labor costs and increasing work efficiency.

Description

Technical Field

[0001] This invention relates to the field of automatic water exploration technology in coal mines, specifically to a drill rod connection structure for an automatic water exploration machine used in coal mines. Background Technology

[0002] Coal mines are areas where humans extract coal resources in coal-rich areas, generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, underground tunnels are typically excavated to extract the coal; this is called an underground coal mine. When the coal seam is very close to the surface, the surface soil layer is typically stripped away to extract the coal; this is called an open-pit coal mine. During underground coal mining, to prevent water and gas accidents from endangering safe production, water detection and drainage are conducted using drill rods before pre-excavation to ensure safe production.

[0003] In the process of mining underground coal, in order to prevent water and gas accidents from endangering safe production, drill rods are needed for water detection and drainage before pre-excavation to ensure safe production. However, existing drill rods have the following problems:

[0004] 1. The drill rod of the existing water exploration machine is connected by a threaded connection, which has problems such as difficulty in alignment and inability to lock completely (e.g., the amount of thread rotation is not complete);

[0005] 2. The existing drill pipe is a component that is easily damaged and needs to be replaced frequently. The threaded connection method is more troublesome to repair and is not easy to disassemble.

[0006] 3. During the maintenance and replacement of existing drill pipes, workers spend a long time working underground, which is subject to regulations and cannot be too long, resulting in low maintenance and replacement efficiency.

[0007] 3. There is a lot of coal dust underground, and threaded connections are prone to dust getting into the threads, which is difficult to clean, especially underground threads, where dust can cause poor meshing.

[0008] 4. Existing threaded drill rods often fail to lock completely. When automatically connecting the drill rod, the torque required increases as the drill rod goes deeper into the hole. Due to the insecure threaded connection, the torque exceeds the motor's load-bearing capacity.

[0009] 5. Existing threaded drill rods have a problem with poor alignment of the positioning holes during mating.

[0010] Therefore, a drill rod connection structure for an automatic water exploration machine used in coal mines is proposed. Summary of the Invention

[0011] The purpose of this invention is to provide a drill rod docking structure for an automatic water exploration machine used in coal mines, which makes drill rod docking convenient and positioning accurate, thereby solving the problems mentioned in the background art.

[0012] To achieve the above objectives, the present invention provides the following technical solution: a drill rod docking structure for an automatic water exploration machine for coal mines, comprising an intermediate pipe, a connecting rod tail, a connecting rod head, and a connector;

[0013] The front and rear ends of each intermediate tube are respectively fixed with a connecting rod head and a connecting rod tail. Two adjacent intermediate tubes are connected through their connecting rod heads and connecting rod tails, and the connecting rod heads and connecting rod tails are positioned and fixed by a connector.

[0014] Preferably, the intermediate tube is a hollow tube or a tube with a support plate.

[0015] Preferably, the two ends of the intermediate tube are fixed to the connecting rod head and connecting rod tail by tight fit, threaded fixing or welding.

[0016] Preferably, the connector can be a multi-claw connector, which includes a cylinder, one end of which is provided with a plurality of evenly distributed claws and fixedly connected, and the end of the cylinder away from the claws is provided with an inner groove, in which a sliding column is fixedly connected.

[0017] Preferably, the connecting rod head includes a first indentation cylinder, a disc is fixedly connected to one side of the first indentation cylinder, a cone is fixedly connected to the end of the disc away from the first indentation cylinder, and a plurality of evenly distributed ribs and slots are provided on the outer side of the cone, with the ribs and slots being alternately arranged.

[0018] Preferably, the connecting rod tail includes a circular tube, one end of which is fixedly connected to a second indentation cylinder. The interior of the circular tube is provided with a sliding column groove, a smooth groove, and a conical groove from the inside to the outside. The sliding column is inserted into the sliding column groove, and a spring is provided on the outside of the sliding column. One end of the spring contacts the circular column and the other end contacts the circular tube. A circular column is inserted into the smooth groove. A cone is inserted into the conical groove. Rectangular grooves, the same number as the sum of the number of ribs and slots, are evenly distributed on the inner side of the conical groove. The claws and ribs are connected to the rectangular grooves, and the end of the claws is inserted into the slots.

[0019] Preferably, the drill pipe docking structure further includes a clamping assembly, which includes a protrusion and a sliding groove. The inner side of the smooth groove is provided with a plurality of evenly distributed sliding grooves, and the outer side of the cylinder is provided with a plurality of evenly distributed protrusions that slide in cooperation with the sliding grooves.

[0020] Preferably, the outer side of the end of the circular tube near the second indentation cylinder is provided with a plurality of evenly distributed ejection grooves, and the ejection grooves are connected to the light grooves.

[0021] Preferably, the circular tube is provided with a first positioning hole, and the disc is provided with a second positioning hole that cooperates with the first positioning hole. Both the first positioning hole and the second positioning hole are provided with positioning sensors.

[0022] Compared with the prior art, the beneficial effects of the present invention are: the advantages of the drill rod docking structure of the automatic water detection machine for coal mines of the present invention compared with other inventions are:

[0023] 1. In this structure, adjacent hollow tubes are connected by the tight fit between the jaws of the three-jaw connector and the groove of the connecting rod head. This avoids the problems of difficult alignment, incomplete locking (such as incomplete thread rotation), and difficulty in disassembling and replacing drill rods, which are caused by using threaded connections. It also enables quick docking, allowing workers to quickly repair drill rods within a specified time, greatly reducing labor and increasing work efficiency.

[0024] 2. The middle tube of this structure is a hollow tube or a pipe with a support plate, which can reduce the weight of the entire drill pipe and facilitate transportation.

[0025] 3. This structure allows air to be blown inwards using a nozzle after the drill rod is pulled out, which can blow coal ash out of the hole. This avoids the situation where coal ash enters the threads during underground operations, causing poor thread engagement. Attached Figure Description

[0026] Figure 1 This is a front view of the drill rod docking structure of an automatic water detection machine for coal mines according to Embodiment 1 of the present invention;

[0027] Figure 2 This is a main sectional view of the drill rod docking structure of an automatic water detection machine for coal mines according to Embodiment 1 of the present invention;

[0028] Figure 3 for Figure 2 A magnified view of section B;

[0029] Figure 4 for Figure 2 A magnified view of a portion at point D;

[0030] Figure 5 for Figure 1 Enlarged view of a portion at point A;

[0031] Figure 6 This is a schematic diagram of the main structure of the connecting rod tail of the drill rod docking structure of an automatic water exploration machine for coal mines according to Embodiment 1 of the present invention, from a first-view perspective.

[0032] Figure 7 This is a schematic diagram of the main structure of the connecting rod of the drill rod docking structure of an automatic water exploration machine for coal mines according to Embodiment 1 of the present invention, from a second perspective.

[0033] Figure 8 A schematic diagram of the main structure of the connecting rod head of the drill rod docking structure of an automatic water detection machine for coal mines according to Embodiment 1 of the present invention;

[0034] Figure 9A schematic diagram of the main structure of a multi-claw connector for the drill rod docking structure of an automatic water exploration machine for coal mines according to Embodiment 1 of the present invention;

[0035] Figure 10 This is a front sectional view of the pipe body with support plate of the drill rod docking structure of an automatic water exploration machine for coal mines according to Embodiment 1 of the present invention.

[0036] Figure 11 This is a main sectional view of the drill rod docking structure of an automatic water detection machine for coal mines according to Embodiment 2 of the present invention;

[0037] Figure 12 for Figure 11 A magnified view of a portion at point C;

[0038] Figure 13 This is a first-view schematic diagram of the main structure of the connecting rod tail of the drill rod docking structure of an automatic water detection machine for coal mines according to Embodiment 2 of the present invention.

[0039] Figure 14 A schematic diagram of the main structure of a multi-claw connector for the drill rod docking structure of an automatic water exploration machine for coal mines, according to Embodiment 2 of the present invention.

[0040] In the diagram: 1. Cone; 2. Rib plate; 3. Slot; 4. Disc; 5. First indentation cylinder; 6. Hollow tube; 7. Support plate; 8. Second indentation cylinder; 9. Round tube; 10. Punch-out groove; 11. Cylinder; 12. Claw; 13. Protrusion; 14. Sliding column; 15. Groove; 16. Sliding groove; 17. First positioning hole; 18. Second positioning hole; 19. Spring; 20. Sliding column groove; 21. Smooth groove; 22. Conical groove; 23. Rectangular groove. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1: Please refer to Figure 1-9 To address the issues of misalignment and incomplete locking in existing threaded drill pipes, this invention provides a technical solution: a drill pipe connection structure for an automatic water exploration machine in coal mines, comprising an intermediate pipe, a connecting rod tail, a connecting rod head, and a connector. The front and rear ends of each intermediate pipe are respectively fixed with a connecting rod head and a connecting rod tail. Adjacent intermediate pipes are connected via their connecting rod heads and tails, which are then positioned and fixed by the connector.

[0043] To reduce the weight of the intermediate tube, the intermediate tube is made of hollow tube 6 or tube body with support plate 7 (e.g., Figure 10 The middle tube of this structure is a hollow tube or a pipe with a support plate, which can reduce the weight of the entire drill rod and facilitate transportation.

[0044] The intermediate tube is fixed to the first indentation cylinder 5 at the head of the connecting rod and the second indentation cylinder 8 at the tail of the connecting rod by means of tight fit, threaded fixation, or welding.

[0045] The connector can be a multi-claw connector. In this embodiment, a three-claw connector is used. The multi-claw connector includes a cylinder 11. One end of the cylinder 11 is provided with three evenly distributed claws 12 and fixedly connected. It can be an integral connection. The end of the cylinder 11 away from the claws 12 is provided with an inner groove 15. A sliding column 14 is fixedly connected in the inner groove 15.

[0046] The connecting rod head includes a first indentation cylinder 5, a disc 4 is fixedly connected to one side of the first indentation cylinder 5, and a cone 1 is fixedly connected to the end of the disc 4 away from the first indentation cylinder 5. A number of evenly distributed ribs 2 and slots 3 are provided on the outer side of the cone 1, and the ribs 2 and slots 3 are alternately arranged.

[0047] The connecting rod tail includes a circular tube 9, one end of which is fixedly connected to a second indentation cylinder 8. The interior of the circular tube 9 is provided with a sliding column groove 20, a smooth groove 21, and a conical groove 22 from the inside to the outside. A sliding column 14 is inserted into the sliding column groove 20, and a spring 19 is provided on the outside of the sliding column 14. One end of the spring 19 contacts the circular column 11, and the other end contacts the circular tube 9. A circular column 11 is inserted into the smooth groove 21. A cone 1 is inserted into the conical groove 22. Rectangular grooves 23 are evenly distributed on the inner side of the conical groove 22, with the same number as the sum of the number of rib plates 2 and slots 3. The chuck 12 and the rib plate 2 are connected to the rectangular grooves 23. The end of the chuck 12 is inserted into the slot 3. This avoids the use of threaded connections, thus eliminating the problems of difficult alignment, incomplete locking (such as incomplete thread rotation), and difficulty in disassembling and replacing the drill rod. It also enables quick docking, allowing workers to quickly repair the drill rod within a specified time, greatly reducing labor and increasing work efficiency.

[0048] The outer side of the end of the circular tube 9 near the second indentation cylinder 8 is provided with several evenly distributed ejection grooves 10, which are connected to the light groove 21.

[0049] The circular tube 9 is provided with a first positioning hole 17, and the disc 4 is provided with a second positioning hole 18 that cooperates with the first positioning hole 17. Both the first positioning hole 17 and the second positioning hole 18 are provided with positioning sensors, the model of which is SH-114.

[0050] The working principle of this invention is as follows: Installation process: First, insert one end of the intermediate tube into the first indentation cylinder 5 of the connecting rod head and the other end into the second indentation cylinder 8 of the connecting rod tail, and connect them with a tight fit, threaded connection, or welding. When connecting with a tight fit, knock the connecting rod head and connecting rod tail into the intermediate tube. Then, put the spring 19 on the sliding column 14 of the three-jaw connector and insert it into the rectangular groove 23 of the connecting rod tail through the claw 12 of the three-jaw connector and slide it into the connecting rod tail. Then, insert it into the light groove 21 and sliding column groove 20 of the connecting rod tail. Then, align the rib plate 2 on the connecting rod head of the next section with the rectangular groove 23 of the connecting rod tail, and insert the connecting rod head into the inside of the claw 12 of the three-jaw connector, so that the claw 12 of the three-jaw connector is engaged in the groove 3 of the connecting rod head, realizing the docking of two adjacent intermediate tubes.

[0051] Rod removal process: Place the clamp into the ejection slot 10 and strike it in the opposite direction with a hammer. Due to the external force, the pawl 12 is pushed outward, the pawl 12 is released, and the middle tube is removed.

[0052] Example 2: Figure 11-14 The drill pipe docking structure also includes a clamping assembly, which includes a protrusion 13 and a sliding groove 16. Several evenly distributed sliding grooves 16 are provided on the inner side of the smooth groove 21, and several evenly distributed protrusions 13 are provided on the outer side of the cylinder 11 to slide and engage with the sliding grooves 16.

[0053] The specific principle is as follows: when the cylinder 11 of the three-jaw connector is inserted into the optical groove 21 of the connecting rod tail, the protrusion 13 on the three-jaw connector is also inserted into the slide groove 16, thus realizing the secondary locking of the three-jaw connector.

[0054] The remaining features are the same as in Example 1.

[0055] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drill rod connection structure for an automatic water detection machine used in coal mines, characterized in that: Includes the intermediate tube, connecting rod tail, connecting rod head, and connector; The front and rear ends of each intermediate tube are respectively fixed with a connecting rod head and a connecting rod tail. Two adjacent intermediate tubes are connected through their connecting rod heads and connecting rod tails. The connecting rod head and connecting rod tail are positioned and fixed by a connector. The connector is a multi-claw connector, which includes a cylinder (11). One end of the cylinder (11) is provided with a number of evenly distributed claws (12) and fixedly connected. The end of the cylinder (11) away from the claws (12) is provided with an inner groove (15), and a sliding column (14) is fixedly connected in the inner groove (15). The connecting rod head includes a first indentation cylinder (5), a disc (4) is fixedly connected to one side of the first indentation cylinder (5), and a cone (1) is fixedly connected to the end of the disc (4) away from the first indentation cylinder (5). A plurality of evenly distributed ribs (2) and slots (3) are provided on the outer side of the cone (1), and the ribs (2) and slots (3) are alternately arranged. The connecting rod tail includes a round tube (9), one end of which is fixedly connected to a second indentation cylinder (8). The inside of the round tube (9) is provided with a sliding column groove (20), a smooth groove (21), and a conical groove (22) from the inside to the outside. The sliding column (14) is inserted into the sliding column groove (20). A spring (19) is provided on the outside of the sliding column (14). One end of the spring (19) contacts the round column (11), and the other end contacts the round tube (9). The smooth groove (21) is inserted into the round column (11). A cone (1) is inserted into the conical groove (22). A rectangular groove (23) is evenly distributed on the inner side of the conical groove (22) with the same number as the sum of the number of ribs (2) and slots (3). The claw (12) and the ribs (2) are connected to the rectangular grooves (23). The end of the claw (12) is inserted into the slot (3). The drill pipe docking structure also includes a clamping assembly, which includes a protrusion (13) and a sliding groove (16). The inner side of the smooth groove (21) is provided with several evenly distributed sliding grooves (16), and the outer side of the cylinder (11) is provided with several evenly distributed protrusions (13) that slide in cooperation with the sliding grooves (16).

2. The drill rod connection structure of an automatic water detection machine for coal mines according to claim 1, characterized in that: The intermediate tube is a hollow tube (6) or a tube with a support plate (7).

3. The drill rod connection structure of an automatic water detection machine for coal mines according to claim 2, characterized in that: The intermediate tube is fixed to the connecting rod head and connecting rod tail by means of tight fit, threaded fixation, or welding.

4. The drill rod connection structure of an automatic water detection machine for coal mines according to claim 1, characterized in that: The outer side of the round tube (9) near the second indentation cylinder (8) is provided with a number of evenly distributed ejection grooves (10), which are connected to the light groove (21).

5. The drill rod connection structure of an automatic water detection machine for coal mines according to claim 1, characterized in that: The circular tube (9) is provided with a first positioning hole (17), and the disc (4) is provided with a second positioning hole (18) that cooperates with the first positioning hole (17). Both the first positioning hole (17) and the second positioning hole (18) are provided with positioning sensors.

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