Drilling equipment

Abstract

The utility model relates to the technical field of mining equipment, in particular to drilling equipment which comprises a drilling machine, at least two cascade drill rods, a drilling bit, a reamer bit and a plugging piece, the drilling machine is provided with a driving assembly, the cascade drill rods are hollow, the multiple cascade drill rods are cascaded in the axis direction of the cascade drill rods to form a drill rod assembly, and the plugging piece is arranged on the drilling bit. The first end of the drill rod assembly is in transmission connection with the driving assembly, the first end of the drilling bit is provided with a first connecting part matched with the second end of the drill rod assembly, one drilling bit is detachably connected to the second end of the drill rod assembly through the first connecting part, and the first connecting part communicates with the interior of the drilling bit and the interior of the drill rod assembly. Second connecting parts matched with the second end of the drill rod assembly are arranged at the two ends of the reamer bit, the second connecting parts communicate with the interior of the reamer bit and the interior of the drill rod assembly correspondingly, the reamer bit is used for being replaced with the drilling bit, and the second connecting parts far away from the drill rod assembly are plugged by the plugging pieces.

Description

Technical Field

[0001] This utility model relates to the field of mining equipment technology, and specifically discloses a drilling device. Background Technology

[0002] In mining operations, ventilation at the working face is of paramount importance, as it directly affects the air quality of the working environment, the safety of construction workers, and the overall efficiency of the project. To effectively solve the ventilation problem at the working face, ventilation holes have become a common and effective technical means.

[0003] In related technologies, blasting is a commonly used method for vertical shaft construction. During construction, a winch needs to be installed at the top of the vertical shaft, and a bucket is used in conjunction with the winch to lift the slag back and forth to the ground. On the one hand, the limited lifting capacity of the winch and the bucket results in low slag removal efficiency, affecting the construction progress. On the other hand, this slag removal method poses a significant threat to the safety of workers in the vertical shaft.

[0004] Besides blasting, specific raise boring machines can also be used for drilling. However, in practice, using raise boring machines for drilling faces a series of significant challenges: First, the purchase cycle for raise boring machines is long. As they are specialized large-scale construction equipment, manufacturers need time for production, debugging, and transportation, resulting in a considerable wait from the decision to purchase to actual use. Second, investigations show that even the cheapest mining raise boring machine and drill pipes cost at least 250,000 yuan, a high price. Third, raise boring machines are used relatively infrequently underground, potentially leading to long periods of idleness and wasted resources. Furthermore, operating a raise boring machine requires theoretical training from specialized technicians, increasing training costs and time, and potentially impacting construction progress due to operator unfamiliarity during training. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this utility model propose a drilling device. After drilling, the drilling equipment allows for secondary enlargement by the tunneling team. During enlargement, slag can be removed using a vertical shaft, greatly improving construction progress, reducing the need for winch slag removal and transportation, and lowering safety risks. Furthermore, this drilling device is based on existing mine equipment and requires only minor modifications, eliminating the need for excessive costs and training time. It can also be used for other drilling operations, resulting in high equipment utilization and preventing long-term idleness, thus avoiding resource waste.

[0006] The drilling equipment of this utility model embodiment includes a drilling rig, cascaded drill rods, drilling bits, reaming bits, and a sealing component. The drilling rig has a drive assembly. There are at least two cascaded drill rods, each hollow inside. Multiple cascaded drill rods are cascaded along their axial direction to form a drill rod assembly. The first end of the drill rod assembly is connected to the drive assembly. There is at least one drilling bit. The first end of the drilling bit is provided with a first connecting portion adapted to the second end of the drill rod assembly. One drilling bit is detachably connected to the second end of the drill rod assembly through the first connecting portion. The first connecting portion communicates with the interior of the drilling bit and the interior of the drill rod assembly, respectively. There is at least one reaming bit. Both ends of the reaming bit are provided with second connecting portions adapted to the second end of the drill rod assembly. The second connecting portions communicate with the interior of the reaming bit and the interior of the drill rod assembly, respectively. The reaming bit is used to replace the drilling bit. The sealing component is detachably connected to the second connecting portion away from the drill rod assembly and seals the second connecting portion.

[0007] After drilling is completed, the drilling equipment of this utility model is used by the tunneling team for secondary enlargement. During enlargement, the slag can be removed using a vertical hole, which greatly improves the construction progress, reduces the need for winch slag removal and transportation, and lowers safety risks. This drilling equipment is based on the existing equipment used in the mine and is modified without incurring excessive costs and training time. In addition, this drilling equipment can also be used for other drilling operations, with high equipment utilization and no long-term idleness, thus avoiding waste of resources.

[0008] In some embodiments, the drilling bit includes a first drill bit body, first drill teeth, and first cutting wings. The first drill bit body has a first fluid channel inside, and the first drill bit body has a plurality of first outlets and a plurality of second outlets communicating with the first fluid channel. The first outlets are located at the second end of the first drill bit body, and the second outlets are located on the sidewall of the first drill bit body. The first connecting portion is connected to the first end of the first drill bit body and communicates with the first fluid channel. The first drill teeth are connected to the second end of the first drill bit body, and the plurality of first drill teeth are spaced apart along the circumferential direction of the first drill bit body. The first cutting wings are connected to the sidewall of the first drill bit body, and the first cutting wings have at least one second drill tooth. There are a plurality of first cutting wings, and the plurality of first cutting wings are spaced apart along the circumferential direction of the first drill bit body.

[0009] In some embodiments, the plurality of first blades are divided into two groups, and the two groups of first blades are distributed at intervals along the axial direction of the first drill bit body. The cutting radius of the group of first blades closer to the drill pipe assembly is greater than the cutting radius of the group of first blades farther away from the drill pipe assembly.

[0010] In some embodiments, the reaming drill bit includes a second drill bit body and a second cutter wing. The second drill bit body has a second fluid channel inside and a plurality of third outlets communicating with the second fluid channel. The third outlets are disposed on the side wall of the second drill bit body. Two second connecting parts are respectively located at both ends of the second drill bit body and are in communication with the fluid channel. The second cutter wing is connected to the side wall of the second drill bit body and has at least one third drill tooth. There are multiple second cutter wings, which are distributed at intervals along the circumference of the second drill bit body.

[0011] In some embodiments, the plurality of second blades are divided into two groups, and the two groups of second blades are distributed at intervals along the axial direction of the second drill body, wherein the cutting radius of one group of second blades is greater than the cutting radius of the other group of second blades.

[0012] In some embodiments, the first end of the cascaded drill rod is provided with a cylindrical first protrusion, and the first protrusion is provided with a first external thread. The second end of the cascaded drill rod is provided with a groove that matches the first protrusion, and the groove is provided with a first internal thread that matches the first external thread, so that two adjacent cascaded drill rods are threadedly connected.

[0013] In some embodiments, the first connecting portion includes a cylindrical second protrusion, the second protrusion having a second external thread that matches the first internal thread, so that the drill bit is threadedly connected to the cascaded drill rod; and / or

[0014] The second connecting part includes a cylindrical third protrusion, on which a third external thread is provided that matches the first internal thread, so that the reaming drill bit is threadedly connected to the cascaded drill rod.

[0015] In some embodiments, the sealing member includes a barrel body, the barrel body having a second internal thread that matches the third external thread, so that the sealing member is threadedly connected to the second connecting portion.

[0016] In some embodiments, the second end of the drill pipe assembly is provided with a first flange;

[0017] The first connection includes a second flange that mates with the first flange, so that the drill bit can be connected to the cascaded drill rod flange; and / or,

[0018] The second connection includes a third flange that matches the first flange, so that the reaming drill bit is connected to the cascaded drill rod flange.

[0019] In some embodiments, the sealing element includes a fourth flange that mates with the third flange to connect the sealing element to the second connection flange. Attached Figure Description

[0020] Figure 1 This is a front view of the drill bit according to an embodiment of the present invention.

[0021] Figure 2 This is an isometric view of the drill bit according to an embodiment of the present invention.

[0022] Figure 3 This is a front view of the reaming drill bit according to an embodiment of the present invention.

[0023] Figure 4 This is an isometric view of the reaming drill bit according to an embodiment of this utility model.

[0024] Figure 5 This is a schematic diagram of the connection between the drill bit and the drill rod assembly according to an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of one connection method of the drill bit and drill rod assembly according to an embodiment of the present utility model.

[0026] Figure 7 This is a schematic diagram of another connection method between the drill bit and drill rod assembly according to an embodiment of the present utility model.

[0027] Figure label:

[0028] Cascaded drill pipe 1; First protrusion 11; First flange 12;

[0029] Drill bit 2; first connecting part 21; second protrusion 211; second flange 212; first drill bit body 22; second outlet 221; first drill tooth 23; first cutter wing 24; second drill tooth 25;

[0030] 3. Reamer bit; 31. Second connecting part; 311. Third protrusion; 312. Third flange; 32. Second drill bit body; 321. Third outlet; 33. Second cutter wing; 34. Third drill tooth;

[0031] 4. Sealing component; 41. Barrel body; 42. Fourth flange. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] The following is in conjunction with the appendix Figure 1 To be continued Figure 7This invention describes a drilling device according to an embodiment of the present invention.

[0034] like Figures 1 to 7 As shown, the drilling equipment of this utility model embodiment includes a drilling rig (not shown), cascaded drill rods 1, a drilling bit 2, a reaming bit 3, and a sealing component 4. Wherein:

[0035] The drilling rig has a drive assembly. The drilling rig is a commonly used type of drilling rig in mines, such as the ZDY4000L(A) crawler-type fully hydraulic drilling rig. There are at least two cascaded drill rods 1. The cascaded drill rods 1 are hollow inside for the flow of drilling fluid or gas. Multiple cascaded drill rods 1 are cascaded along their axial direction to form a drill rod assembly. The first end of the drill rod assembly is connected to the drive assembly for transmission.

[0036] There is at least one drilling bit 2. The first end of the drilling bit 2 is provided with a first connecting part 21 that is adapted to the second end of the drill rod assembly. The drilling bit 2 is detachably connected to the second end of the drill rod assembly through the first connecting part 21. The first connecting part 21 communicates with the interior of the drilling bit 2 and the interior of the drill rod assembly respectively, so that drilling fluid or gas can flow from the interior of the drill rod assembly into the interior of the drilling bit 2 and be sprayed on the rock and soil or the drill bit, thereby cooling the drill bit, lubricating the drill bit, and carrying rock cuttings.

[0037] There is at least one reaming bit 3. Both ends of the reaming bit 3 are provided with second connecting parts 31 that are adapted to the second end of the drill rod assembly. The second connecting parts 31 are respectively connected to the interior of the reaming bit 3 and the interior of the drill rod assembly, so that drilling fluid or gas can flow from the interior of the drill rod assembly into the interior of the reaming bit 3 and be sprayed on the rock or drill bit to cool the drill bit, lubricate the drill bit and carry rock cuttings. The reaming bit 3 is used to replace the drilling bit 2. That is, the reaming bit 3 is used to replace the drilling bit 2 for reaming operation after drilling is completed.

[0038] The sealing component 4 is detachably connected to the second connection part 31 away from the drill pipe assembly and seals the second connection part 31 to prevent air or liquid leakage from the second connection part 31 from affecting the cooling, lubrication and cuttings carrying effects of the drill bit.

[0039] When constructing the borehole, the cascaded drill rod 1 is connected in series to the drilling rig, and the drilling bit 2 is connected to the cascaded drill rod 1 before drilling begins (e.g., Figure 5 (As shown in the connection diagram), then the cascaded drill rods 1 are cascaded sequentially, and the drill bit 2 is pushed downwards to drill until it connects with the roadway below; then the drill bit 2 is removed and the reaming drill bit 3 is connected to the cascaded drill rods 1 with the cutting part facing upwards (as shown in the diagram). Figure 6(As shown in the connection diagram), the cascaded drill rod 1 is dismantled sequentially, causing the reaming drill bit 3 to move upwards to enlarge the hole until the reaming drill bit 3 is moved above the ground; then the reaming drill bit 3 is removed and replaced with a reaming drill bit 3 with a larger cutting diameter, and the cutting part of the reaming drill bit 3 is connected downwards to the cascaded drill rod 1 (e.g., Figure 7 (As shown in the connection method), the cascaded drill rods 1 are cascaded in sequence and the reaming drill bit 3 is pushed downward to ream the hole until it is connected to the roadway below; the above reaming is repeated until the final hole diameter is reached. Then, the tunneling team performs secondary reaming and discharges the slag through the vertical hole to the scraper conveyor installed in the lower roadway. This reduces the need to install a winch at the top of the vertical hole and use a bucket to lift the slag, effectively preventing accidental falls of the slag discharge bucket that could cause personnel injury.

[0040] In one specific embodiment, a φ94mm drilling bit 2 is installed on the drill rod assembly, and drilling is performed at the designed angle to connect with the roadway below. After the hole is formed, φ250mm, φ350mm, φ450mm, φ550mm, and φ600mm reaming bits 3 are used to enlarge the hole, ultimately achieving a final hole diameter of φ600mm. When the tunneling team performs secondary enlargement, the slag can be discharged through the vertical shaft to the scraper conveyor installed in the lower roadway, reducing the need to install a winch at the top of the vertical shaft and use a bucket to lift the slag, effectively preventing accidental falls of the slag discharge bucket that could cause personnel injury.

[0041] After drilling is completed, the drilling equipment of this utility model is used by the tunneling team for secondary enlargement. During enlargement, the slag can be removed using a vertical hole, which greatly improves the construction progress, reduces the need for winch slag removal and transportation, and lowers safety risks. This drilling equipment is based on the existing equipment used in the mine and is modified without incurring excessive costs and training time. In addition, this drilling equipment can also be used for other drilling operations, with high equipment utilization and no long-term idleness, thus avoiding waste of resources.

[0042] like Figure 1 and Figure 2As shown, in some embodiments, the drilling bit 2 includes a first drill bit body 22, first drill teeth 23, and first cutter wings 24. The first drill bit body 22 has a first fluid channel (not shown) inside, and multiple first outlets (not shown) and multiple second outlets 221 communicating with the first fluid channel are provided on the first drill bit body 22. The first outlets are located at the second end of the first drill bit body 22, and can directly spray drilling fluid or gas to the bottom of the borehole to cool and lubricate the first drill teeth 23, while simultaneously flushing away drilling cuttings from the bottom of the borehole for easy removal. The second outlets 221 are located on the sidewall of the first drill bit body 22, and can spray drilling fluid or gas into the borehole. The sidewall further serves to cool, lubricate, and stabilize the borehole wall; the first connecting part 21 is connected to the first end of the first drill bit body 22 and communicates with the first fluid channel so that the drilling fluid or gas in the drill pipe assembly can smoothly enter the drill bit; the first drill tooth 23 is connected to the second end of the first drill bit body 22, and multiple first drill teeth 23 are spaced apart along the circumferential direction of the first drill bit body 22; the first cutter wing 24 is connected to the sidewall of the first drill bit body 22, and at least one second drill tooth 25 is provided on the first cutter wing 24; there are multiple first cutter wings 24, and multiple first cutter wings 24 are spaced apart along the circumferential direction of the first drill bit body 22; the first drill tooth 23 and the second drill tooth 25 work together to cut the rock and soil to complete the drilling work.

[0043] like Figure 1 and Figure 2 As shown, further, the multiple first blades 24 are divided into two groups, and the two groups of first blades 24 are distributed at intervals along the axial direction of the first drill bit body 22. The cutting radius of the group of first blades 24 closer to the drill pipe assembly is greater than the cutting radius of the group of first blades 24 farther away from the drill pipe assembly.

[0044] Understandably, by setting up two sets of first cutter wings 24, the rock and soil can be cut in multiple layers during the drilling process, thereby improving cutting efficiency.

[0045] like Figure 3 and Figure 4As shown, in some embodiments, the reaming bit 3 includes a second bit body 32 and a second cutter wing 33. The second bit body 32 has a second fluid channel (not shown) inside for transporting drilling fluid or gas. The second bit body 32 has a plurality of third outlets 321 connected to the second fluid channel. The third outlets 321 are located on the sidewall of the second bit body 32 and are used to spray drilling fluid or gas onto the third drill teeth 34 or the rock and soil. On the one hand, this can cool and lubricate the reaming bit 3, reduce friction between the drill bit and the rock and soil, lower the drill bit temperature, and extend the service life of the drill bit. On the other hand, it can flush away the rock cuttings generated during reaming. The enlarged borehole area facilitates the removal of rock cuttings and ensures the smooth progress of the enlargement operation. Two second connecting parts 31 are located at both ends of the second drill bit body 32, and both second connecting parts 31 are connected to the fluid channel. After one of the second connecting parts 31 is connected to the drill rod assembly, the sealing part 4 is connected to the other second connecting part 31 to prevent leakage of liquid or air. The second cutter wing 33 is connected to the side wall of the second drill bit body 32. The second cutter wing 33 is provided with at least one third drill tooth 34. There are multiple second cutter wings 33, which are distributed at intervals along the circumference of the second drill bit body 32. The third drill tooth 34 cuts the rock and soil to complete the enlargement operation.

[0046] like Figure 3 and Figure 4 As shown, further, the multiple second blades 33 are divided into two groups, and the two groups of second blades 33 are distributed at intervals along the axial direction of the second drill body 32. The cutting radius of one group of second blades 33 is larger than that of the other group of second blades 33.

[0047] Understandably, by setting up two sets of second blades 33, the rock and soil can be cut in multiple layers during the hole enlargement process, thereby improving cutting efficiency.

[0048] like Figures 5 to 7 As shown, in some embodiments, the first end of the cascaded drill rod 1 is provided with a cylindrical first protrusion 11, and the first protrusion 11 is provided with a first external thread. The second end of the cascaded drill rod 1 is provided with a groove (not shown) that matches the first protrusion 11, and the groove is provided with a first internal thread that matches the first external thread, so that two adjacent cascaded drill rods 1 are threadedly connected.

[0049] It is understandable that the first protrusion 11 with external threads and the groove with internal threads can ensure that the two can fit accurately, and that two adjacent cascaded drill rods 1 can be cascaded by means of threaded connection.

[0050] like Figures 1 to 4As shown, in some embodiments, the first connecting portion 21 includes a cylindrical second protrusion 211, on which a second external thread matching the first internal thread is provided, so that the drilling bit 2 is threadedly connected to the cascaded drill rod 1; and / or, the second connecting portion 31 includes a cylindrical third protrusion 311, on which a third external thread matching the first internal thread is provided, so that the reaming bit 3 is threadedly connected to the cascaded drill rod 1.

[0051] It is understandable that the second protrusion 211 with external threads can ensure that the drilling bit 2 and the cascaded drill rod 1 can be accurately matched, and that the drilling bit 2 and the cascaded drill rod 1 can be disassembled by means of threaded connection; the third protrusion 311 with external threads can ensure that the reaming bit 3 and the cascaded drill rod 1 can be accurately matched, and that the reaming bit 3 and the cascaded drill rod 1 can be disassembled by means of threaded connection.

[0052] like Figure 6 and Figure 7 As shown, the sealing component 4 further includes a barrel 41, and the barrel 41 is provided with a second internal thread that matches the third external thread, so that the sealing component 4 is threadedly connected to the second connecting part 31.

[0053] Understandably, when one of the second connecting parts 31 is connected to the cascaded drill rod 1, the sealing part 4 is threaded onto the other second connecting part 31. This prevents liquid or air leakage from the second connecting part 31, avoids debris from entering the reaming drill bit 3, and protects the second connecting part 31, reducing the risk of damage to the second connecting part 31.

[0054] like Figures 1 to 7 As shown, in some embodiments, the second end of the drill pipe assembly is provided with a first flange 12; the first connecting part 21 includes a second flange 212 that matches the first flange 12 to connect the drilling bit 2 to the flange of the cascaded drill pipe 1; and / or, the second connecting part 31 includes a third flange 312 that matches the first flange 12 to connect the reaming bit 3 to the flange of the cascaded drill pipe 1.

[0055] It is understandable that by setting the first flange 12, the second flange 212 and the third flange 312, it can be ensured that the drilling bit 2 and the reaming bit 3 can be accurately matched with the cascaded drill rod 1. Moreover, since the flange connection has the advantages of high connection strength and good sealing performance, it is suitable for occasions with high requirements for connection reliability.

[0056] like Figure 3 and Figure 4 As shown, in some embodiments, the sealing element 4 includes a fourth flange 42 that matches the third flange 312 so that the sealing element 4 is flanged to the second connection portion 31.

[0057] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In this utility model, the terms "one embodiment," "some embodiments," "example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A drilling device, characterized in that, The system includes a drilling rig, cascaded drill rods, drilling bits, reaming bits, and a plugging component. The drilling rig has a drive assembly. There are at least two cascaded drill rods, each hollow inside. Multiple cascaded drill rods are cascaded along their axial direction to form a drill rod assembly. The first end of the drill rod assembly is connected to the drive assembly. There is at least one drilling bit, the first end of which has a first connecting portion adapted to the second end of the drill rod assembly. One drilling bit is detachably connected to the second end of the drill rod assembly through the first connecting portion. The first connecting portion communicates with the interior of the drilling bit and the interior of the drill rod assembly, respectively. There is at least one reaming bit, both ends of which have second connecting portions adapted to the second end of the drill rod assembly. The second connecting portions communicate with the interior of the reaming bit and the interior of the drill rod assembly, respectively. The reaming bit is used to replace the drilling bit. The plugging component is detachably connected to the second connecting portion away from the drill rod assembly and plugs the second connecting portion.

2. The drilling equipment according to claim 1, characterized in that, The drilling bit includes a first drill bit body, first drill teeth, and first cutting wings. The first drill bit body has a first fluid channel inside, and the first drill bit body has multiple first outlets and multiple second outlets communicating with the first fluid channel. The first outlets are located at the second end of the first drill bit body, and the second outlets are located on the side wall of the first drill bit body. The first connecting part is connected to the first end of the first drill bit body and communicates with the first fluid channel. The first drill teeth are connected to the second end of the first drill bit body, and the multiple first drill teeth are spaced apart along the circumferential direction of the first drill bit body. The first cutting wings are connected to the side wall of the first drill bit body, and the first cutting wings have at least one second drill tooth. There are multiple first cutting wings, and the multiple first cutting wings are spaced apart along the circumferential direction of the first drill bit body.

3. The drilling equipment according to claim 2, characterized in that, The first blades are divided into two groups, and the two groups of first blades are distributed at intervals along the axial direction of the first drill bit body. The cutting radius of the group of first blades closer to the drill rod assembly is greater than the cutting radius of the group of first blades farther away from the drill rod assembly.

4. The drilling equipment according to claim 1, characterized in that, The reaming drill bit includes a second drill bit body and a second cutter wing. The second drill bit body has a second fluid channel inside and multiple third outlets connected to the second fluid channel. The third outlets are located on the side wall of the second drill bit body. Two second connecting parts are located at both ends of the second drill bit body and are connected to the fluid channel. The second cutter wing is connected to the side wall of the second drill bit body and has at least one third drill tooth. There are multiple second cutter wings, which are distributed at intervals along the circumference of the second drill bit body.

5. The drilling equipment according to claim 4, characterized in that, The multiple second blades are divided into two groups, and the two groups of second blades are distributed at intervals along the axial direction of the second drill body. The cutting radius of one group of second blades is larger than that of the other group of second blades.

6. The drilling equipment according to any one of claims 1-5, characterized in that, The first end of the cascaded drill rod is provided with a cylindrical first protrusion, and the first protrusion is provided with a first external thread. The second end of the cascaded drill rod is provided with a groove that matches the first protrusion, and the groove is provided with a first internal thread that matches the first external thread, so that two adjacent cascaded drill rods are threadedly connected.

7. The drilling equipment according to claim 6, characterized in that, The first connecting portion includes a cylindrical second protrusion, on which a second external thread is provided that matches the first internal thread, so that the drill bit is threadedly connected to the cascaded drill rod; and / or, The second connecting part includes a cylindrical third protrusion, on which a third external thread is provided that matches the first internal thread, so that the reaming drill bit is threadedly connected to the cascaded drill rod.

8. The drilling equipment according to claim 7, characterized in that, The sealing component includes a barrel body, and the barrel body is provided with a second internal thread that matches the third external thread, so that the sealing component is threadedly connected to the second connecting part.

9. The drilling equipment according to any one of claims 1-5, characterized in that, The second end of the drill pipe assembly is provided with a first flange; The first connection includes a second flange that mates with the first flange, so that the drill bit can be connected to the cascaded drill rod flange; and / or, The second connection includes a third flange that matches the first flange, so that the reaming drill bit is connected to the cascaded drill rod flange.

10. The drilling equipment according to claim 9, characterized in that, The sealing element includes a fourth flange that matches the third flange, so that the sealing element is connected to the second connection flange.

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