Drilling slewing mechanism and digging and anchoring equipment

Abstract

The utility model relates to the technical field of mining mechanical equipment, and provides a drilling slewing mechanism and digging and anchoring equipment. The drilling slewing mechanism comprises a first shell, a second shell, a first rotating shaft and a second rotating shaft, wherein the first shell and the second shell are detachably connected; the first rotating shaft is rotationally arranged in the first shell; a connecting structure for connecting a drill rod is arranged at one end of the first rotating shaft, and the other end of the first rotating shaft is detachably connected with the second rotating shaft and can synchronously rotate with the second rotating shaft; the second rotating shaft is connected with a driving part. According to the drilling slewing mechanism, through detachable connection of the first shell and the second shell and detachable connection of the first rotating shaft and the second rotating shaft, when a connecting structure connected with a drill rod is damaged, the first rotating shaft used for being connected with the drill rod can be independently replaced only by disassembling the first shell, the operation difficulty is lowered, and the maintenance time is shortened; therefore, the quick-wear structure can be disassembled, assembled and maintained conveniently, and the use efficiency of the drilling slewing mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery and equipment technology, and in particular to a drilling rotary mechanism. This utility model also relates to a tunneling and anchoring device having the aforementioned drilling rotary mechanism. Background Technology

[0002] In mining, geological exploration, and tunnel construction, the drilling rotary mechanism, as a core power transmission component, plays a crucial role in driving the drill rod to rotate and achieving efficient drilling. In existing technologies, the drilling rotary mechanism is an integral housing and shaft structure. The connection end between the shaft and the drill rod is easily damaged and deformed due to long-term impact loads and vibrations. Simultaneously, the contact surface between the shaft and the sealing structure is prone to wear due to long-term rotational friction, necessitating the disassembly and replacement of the shaft.

[0003] During the disassembly and assembly of the shaft, the entire housing needs to be separated from the drive unit to disassemble the entire shaft. Furthermore, during the disassembly and assembly of the shaft, it is also necessary to rearrange components such as bearings and sealing structures. The operation is complex, and the disassembly, assembly, and maintenance are difficult, which affects the efficiency of the drilling rotary mechanism. Utility Model Content

[0004] In view of this, the present invention aims to provide a drilling rotary mechanism to facilitate disassembly and maintenance.

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

[0006] A drilling rotary mechanism includes a first housing and a second housing that are detachably connected, a first rotating shaft rotatably disposed in the first housing, and a second rotating shaft rotatably disposed in the second housing;

[0007] One end of the first rotating shaft is provided with a connecting structure for connecting the drill rod, and the other end of the first rotating shaft is detachably connected to the second rotating shaft and can rotate synchronously with the second rotating shaft;

[0008] The second rotating shaft is used to connect to the drive unit.

[0009] Furthermore, the first rotating shaft can be detachably inserted into the first housing along the axial direction, and a limiting structure is provided between the first rotating shaft and the first housing, the limiting structure being able to limit the depth of the first rotating shaft inserted into the first housing.

[0010] Furthermore, one of the first rotating shaft and the second rotating shaft is provided with a plug, and the other is provided with a socket. The first rotating shaft and the second rotating shaft are connected by the plug and the socket. The plug is provided with a limiting surface, and the socket is provided with a mating surface. The limiting surface abuts against the mating surface and can limit the relative rotation between the first rotating shaft and the second rotating shaft.

[0011] Furthermore, the first housing is provided with a water inlet and a water trough surrounding the first rotating shaft, and the water inlet is connected to the water trough; the first rotating shaft is provided with a water passage hole connected to the water trough and a water supply channel connected to the water passage hole, and the water supply channel extends to the end of the first rotating shaft where the connecting structure is provided.

[0012] Furthermore, a first sealing structure is provided between the first housing and the first rotating shaft, and the first sealing structure is provided on both the front and rear sides of the water tank along the axial direction.

[0013] Furthermore, the first rotating shaft has an extension extending beyond the first housing, the connecting structure is disposed at the end of the extension, and a water-retaining ring is sleeved on the end of the extension near the first housing.

[0014] Furthermore, a radially extending collar is formed on the second rotating shaft, and a second sealing structure is provided between the collar and the inner wall of the second housing, so that the collar and the second housing form a receiving cavity; a bearing assembly sleeved on the second rotating shaft is provided in the receiving cavity.

[0015] Furthermore, the second housing is provided with an oil inlet that communicates with the receiving cavity, and an oil inlet plug is screwed into the oil inlet.

[0016] Furthermore, a mounting ring is formed on the end face where the first housing connects to the second housing. The mounting ring can be inserted into the gap between the second housing and the collar and abut against the second sealing structure.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] The drilling rotary mechanism described in this utility model, through the detachable connection between the first housing and the second housing, as well as the first rotating shaft and the second rotating shaft, allows for the replacement of the first rotating shaft used to connect the drill rod by simply disassembling the first housing when the connecting structure is damaged. This reduces the difficulty of operation and maintenance time, facilitates the disassembly and maintenance of vulnerable structures, and thus improves the efficiency of the drilling rotary mechanism.

[0019] Furthermore, a limiting structure is provided between the first rotating shaft and the first housing to limit the insertion depth of the first rotating shaft in the first housing, preventing the first rotating shaft from dislodging from the first housing and ensuring a stable connection between the first and second rotating shafts. The first and second rotating shafts are respectively provided with insertion blocks and insertion holes. Through the insertion and engagement of the insertion blocks and insertion holes, a rigid contact torque transmission path can be formed to facilitate the transmission connection between the first and second rotating shafts.

[0020] In addition, the first housing is provided with a water inlet and a water tank, and the water passage and water supply channel of the water tank are connected inside the first rotating shaft. During the rotation of the first rotating shaft, it can continuously deliver slag discharge water to the drill pipe to improve drilling efficiency and safety. A first sealing structure is provided between the first housing and the first rotating shaft to prevent slag discharge water from overflowing, which would affect the rotation of the first and second rotating shafts and the efficiency of delivering slag discharge water to the drill pipe. A water-retaining ring is fitted on the outer extension of the first rotating shaft to further prevent slag discharge water from entering the first housing.

[0021] Furthermore, a second sealing structure is provided between the shaft collar on the second rotating shaft and the second housing to ensure the sealing of the inner cavity of the second housing, preventing slag discharge water from entering the cavity and affecting the rotation of the bearing assembly, and preventing the leakage of lubricating oil in the cavity. An oil inlet is provided on the second housing to facilitate the addition of lubricating oil to the cavity. A mounting ring is formed on the end face of the first housing, which can be inserted into the gap between the second housing and the shaft collar to further improve the sealing of the first and second housings, as well as the cavity.

[0022] Another objective of this invention is to provide a drilling and anchoring device having the drilling and rotating mechanism described above.

[0023] The excavation and anchoring equipment described in this utility model and / or the drilling rotary mechanism described above have the same technical effects as the prior art, and will not be described in detail here. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a schematic diagram of the drilling rotary mechanism described in an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the first rotating shaft according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the second rotating shaft according to an embodiment of the present utility model;

[0028] Figure 4 for Figure 1 An enlarged view of the location shown in Figure A;

[0029] Figure 5 for Figure 1 Enlarged view of the location shown in B;

[0030] Figure 6 for Figure 1 A magnified view of the position shown in C.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. First housing; 101. Limiting platform; 102. Water inlet; 103. Water tank; 104. Mounting ring;

[0033] 2. Second housing; 201. Receiving cavity; 202. Oil inlet; 203. Oil inlet plug;

[0034] 3. First rotating shaft; 301. Connecting structure; 302. Limiting ring; 303. Water passage hole; 304. Water supply channel; 305. Outer extension; 306. Water-retaining ring;

[0035] 4. Second rotating shaft; 401. Insert block; 402. Positioning pin; 403. Shaft collar; 404. Tapered roller bearing; 405. Locking sleeve;

[0036] 5. Drive unit; 501. Output shaft;

[0037] 6. First sealing structure;

[0038] 7. Second sealing structure;

[0039] 8. Third sealing structure. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0041] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0042] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they 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 do not 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. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0044] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] Example 1

[0046] This embodiment relates to a drilling rotary mechanism, the overall structure of which is as follows: Figure 1 As shown, it includes a first housing 1 and a second housing 2 that are detachably connected, a first rotating shaft 3 rotatably disposed in the first housing 1, and a second rotating shaft 4 rotatably disposed in the second housing 2.

[0047] The first rotating shaft 3 has a connecting structure 301 for connecting the drill pipe at one end, and the other end of the first rotating shaft 3 is detachably connected to the second rotating shaft 4 and can rotate synchronously with the second rotating shaft 4. The second rotating shaft 4 is used to connect to the drive unit 5. The drive shaft of the drive unit 5 is connected to one end of the second rotating shaft 4, and can drive the drill pipe to rotate through the first rotating shaft 3 and the second rotating shaft 4.

[0048] As configured above, through the detachable connection between the first housing 1 and the second housing 2, and between the first rotating shaft 3 and the second rotating shaft 4, when the connecting structure 301 connecting the drill rod is damaged, only the first housing 1 needs to be disassembled to replace the first rotating shaft 3 used to connect the drill rod, thus achieving the replacement of the vulnerable structure. Furthermore, during the disassembly and assembly of the first rotating shaft 3, the second housing 2 and the second rotating shaft 4 remain connected to the drive unit 5. Compared to existing technologies, this eliminates the need to disassemble the entire housing and rearrange bearings, sealing structures, and other components, reducing operational difficulty and maintenance time, facilitating disassembly and maintenance, and improving the efficiency of the drilling rotary mechanism.

[0049] Based on the above overview, specifically, in this embodiment, the first housing 1 is detachably connected to one end of the second housing 2 via bolts, and the other end of the second housing 2 is connected to the outer shell of the drive unit 5. In this embodiment, the drive unit 5 can be a drive motor or hydraulic motor coaxially connected to the second rotating shaft 4, or in this embodiment, the drive unit 5 can be a transmission box connected to the second rotating shaft 4. The output shaft 501 of the transmission box is connected to the second rotating shaft 4, while the input shaft is connected to a power source on the excavating and anchoring equipment, and this power source can be a drive motor, internal combustion engine, or hydraulic motor, etc. Simultaneously, the second rotating shaft 4 and the output shaft 501 of the drive unit 5 are connected via splines.

[0050] Furthermore, in this embodiment, the connecting structure 301 on the first rotating shaft 3 is an internal hexagonal hole, allowing one end of the drill rod connected to the first rotating shaft 3 to be inserted into the internal hexagonal hole. Of course, other conventional connecting structures 301 well-known to those skilled in the art can also be used for the connecting structure 301 in this embodiment, such as a threaded connection structure 301, a keyed connection structure 301, etc., as long as a stable connection between the drill rod and the first rotating shaft 3 is ensured. Additionally, different specifications of drill rods can be adapted by replacing the first rotating shaft 3 with different specifications, thereby improving the versatility of the drilling rotary mechanism in this embodiment.

[0051] To prevent the first rotating shaft 3 from sliding along the axis and coming out of the first housing 1, such as Figure 1 and Figure 2 As shown, in this embodiment, the first rotating shaft 3 can be detachably inserted into the first housing 1 along the axial direction, and a limiting structure is provided between the first rotating shaft 3 and the first housing 1. The limiting structure can limit the insertion depth of the first rotating shaft 3 into the first housing 1. By setting the limiting structure, the insertion depth of the first rotating shaft 3 in the first housing 1 can be limited. At the same time, in this embodiment, the first rotating shaft 3 is inserted into the first housing 1 from the side closer to the second housing 2. When the first rotating shaft 3 is subjected to an axial upward pulling force, the limiting mechanism can prevent the first rotating shaft 3 from being pulled out of the first housing 1, ensuring that the first rotating shaft 3 is stably installed in the first housing 1 and ensuring a stable connection between the first rotating shaft 3 and the second rotating shaft 4, thereby improving the reliability of the drilling rotary mechanism.

[0052] In a specific implementation, the limiting structure of this embodiment includes a limiting platform 101 provided on the inner wall of the first housing 1 and a limiting ring 302 provided on the first rotating shaft 3. The limiting ring 302 extends radially along the first rotating shaft 3 and can abut against the limiting platform 101 to form a limiting constraint on the first rotating shaft 3 in the axial direction.

[0053] As a specific form of implementation, such as Figure 1 and Figure 3As shown, in this embodiment, one of the first rotating shaft 3 and the second rotating shaft 4 is provided with an insertion block 401, and the other is provided with an insertion hole. The first rotating shaft 3 and the second rotating shaft 4 are connected by insertion block 401 and insertion hole. The insertion block 401 is provided with a limiting surface, and the insertion hole is provided with a mating surface. The limiting surface and the mating surface abut against each other, which can limit the relative rotation between the first rotating shaft 3 and the second rotating shaft 4. Through the insertion and engagement of the insertion block 401 and the insertion hole, the limiting surface on the insertion block 401 and the mating surface in the insertion hole are tightly abutted, forming a rigid contact torque transmission path, which facilitates the transmission connection between the first rotating shaft 3 and the second rotating shaft 4, and can transmit a large torque to ensure the driving effect on the drill rod.

[0054] In specific implementation, in this embodiment, the insertion block 401 is located at one end of the second rotating shaft 4, and the insertion hole is located on the first rotating shaft 3. The insertion block 401 in this embodiment is rectangular, and the insertion hole is also rectangular. The insertion block 401 has four limiting surfaces, which can further improve the torque transmission effect. Of course, the insertion block 401 in this embodiment can also be set to other structural forms, such as "D" shape or cross shape, as long as it can realize the insertion connection between the first rotating shaft 3 and the second rotating shaft 4 and ensure the torque transmission effect. In addition, the end of the insertion block 401 in this embodiment is provided with a cylindrical positioning post 402, and the bottom of the insertion hole is provided with a positioning hole for the guide post to be inserted. Through the setting of the positioning post 402, the insertion block 401 can be guided into the insertion hole. At the same time, the insertion connection between the positioning post 402 and the positioning hole can realize the axial positioning of the first rotating shaft 3 and the second rotating shaft 4, thereby ensuring the coaxiality of the first rotating shaft 3 and the second rotating shaft 4 to a certain extent and guaranteeing the stability when the first rotating shaft 3 and the second rotating shaft 4 rotate synchronously.

[0055] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the first housing 1 has a water inlet 102 and a water tank 103 surrounding the first rotating shaft 3, and the water inlets are all connected to the water tank 103. The first rotating shaft 3 has a water passage 303 communicating with the water tank 103 and a water supply channel 304 communicating with the water passage 303, and the water supply channel 304 extends to the end of the first rotating shaft 3 where the connecting structure 301 is located. Through the water tank 103 and the water supply channel 304, during the rotation of the first rotating shaft 3, external water can be supplied to the water tank 103 through the water inlet 102 to deliver slag discharge water. Since the water tank 103 surrounds the first rotating shaft 3, the slag discharge water in the water tank 103 can always flow through the water passage 303 to the water supply channel 304, and then flow through the water supply channel 304 to the slag discharge water passage inside the drill rod. Therefore, the drilling rotary mechanism of this embodiment can continuously supply slag discharge water to the drilling area of ​​the drill rod through the first housing 1 and the first rotating shaft 3 to lubricate the contact surface between the drill rod and the rock and soil, and to discharge rock cuttings out of the hole with the slag discharge water, thereby avoiding stuck drill or drill rod wear caused by debris accumulation, and improving drilling efficiency and safety.

[0056] Furthermore, such as Figure 1 ,and Figure 4 As shown, to prevent coolant from overflowing from the water tank 103 and flowing to other parts of the first housing 1, a first sealing structure 6 is provided between the first housing 1 and the first rotating shaft 3 in this embodiment, and the first sealing structure 6 is provided on both the front and rear sides of the water tank 103 along the axial direction. The first sealing structure 6 can seal the gap between the first housing 1 and the first rotating shaft 3 on the front and rear sides of the water tank 103, preventing coolant from overflowing and affecting the normal rotation of the first rotating shaft 3, or causing a decrease in the supply of coolant to the drill pipe due to coolant overflow.

[0057] In specific implementation, the first sealing structure 6 in this embodiment is a sealing ring, and the number of first sealing structures 6 provided on the side of the water tank 103 facing the second housing 2 is greater than the number of first sealing rings on the side of the water tank 103 away from the second housing 2, further preventing the slag discharge water from overflowing and flowing into the second housing 2, and avoiding the slag discharge water from affecting the normal rotation of the second rotating shaft 4.

[0058] Furthermore, in this embodiment, the first rotating shaft 3 has an extension 305 extending beyond the first housing 1. A connecting structure 301 is located at the end of the extension 305, and a water-blocking ring 306 is fitted onto the end of the extension 305 near the first housing 1. Through the water-blocking ring 306, the water-blocking ring 306 can block the coolant discharged from the borehole. Simultaneously, the water-blocking ring 306 rotates with the extension 305, i.e., the first rotating shaft 3. The rotating water-blocking ring 306 can utilize centrifugal effect to fling out the coolant adhering to the water-blocking ring 306, as well as the coolant located between the water-blocking ring 306 and the first housing 1, preventing coolant carrying rock cuttings from entering the first housing 1 and affecting the normal rotation of the first rotating shaft 3. In specific implementations, the water-blocking ring 306 in this embodiment is screwed onto the extension 305 for easy disassembly and maintenance.

[0059] As a specific form of implementation, such as Figure 1 , Figure 3 and Figure 5 As shown, in this embodiment, a radially extending collar 403 is formed on the second rotating shaft 4. A second sealing structure 7 is provided between the collar 403 and the inner wall of the second housing 2, so that the collar 403 and the second housing 2 form a receiving cavity 201. A bearing assembly sleeved on the second rotating shaft 4 is provided in the receiving cavity 201. The collar 403 and the second sealing structure 7 ensure the sealing of the receiving cavity 201, preventing external liquid from entering the receiving cavity 201 and affecting the normal rotation of the bearing assembly and the second rotating shaft 4, and preventing the lubricating oil in the receiving cavity 201 from overflowing, thus ensuring the normal rotation of the second bearing.

[0060] In a specific implementation, the bearing assembly of this embodiment includes two tapered roller bearings 404 arranged axially spaced apart, and a locking sleeve 405 is provided at one end of the second bearing connecting to the drive part 5. One bearing abuts between the collar 403 and the inner wall of the second housing 2, and the other bearing abuts between the inner wall of the second housing 2 and the locking sleeve 405. The collar 403 and the locking sleeve 405 can restrict the bearing assembly from sliding circumferentially along the second rotating shaft 4. In addition, the second sealing structure 7 of this embodiment is a skeleton sealing ring, and the outer shell support of the second housing 2 and the drive part 5 is provided with a third sealing structure 8, such as... Figure 6 As shown, this is to further ensure the sealing of the receiving cavity 201.

[0061] Specifically, such as Figure 1 As shown, the second housing 2 in this embodiment is provided with an oil inlet 202 that communicates with the receiving cavity 201, and an oil inlet plug 203 is screwed onto the oil inlet 202. By providing the oil inlet 202, lubricating oil can be added to the receiving cavity 201 to ensure the normal rotation of the second rotating shaft 4.

[0062] Finally, as Figure 5As shown, in this embodiment, a mounting ring 104 is formed on the end face where the first housing 1 connects to the second housing 2. The mounting ring 104 can be inserted into the gap between the second housing 2 and the collar 403 and abuts against the second sealing structure 7. By providing the mounting ring 104, the mounting ring 104 can be inserted into the second housing 2, thus playing a guiding role to ensure the accurate installation position of the first housing 1. At the same time, the mounting ring 104 inserted into the gap between the second housing 2 and the collar 403 can, to a certain extent, prevent liquid from the outside or inside the first housing 1 from entering the second cavity, thereby further improving the sealing performance of the receiving cavity 201.

[0063] In summary, the drilling rotary mechanism of this embodiment, through the detachable connection between the first housing 1 and the second housing 2, and the first rotating shaft 3 and the second rotating shaft 4, allows the first rotating shaft 3 used to connect the drill rod to be replaced individually only by disassembling the first housing 1 when the connecting structure 301 connecting the drill rod is damaged. This reduces the difficulty of operation and maintenance time, and facilitates the disassembly and maintenance of vulnerable structures, thereby improving the efficiency of the drilling rotary mechanism.

[0064] Example 2

[0065] This embodiment relates to a tunneling and anchoring device having a drilling rotation mechanism as described in Embodiment 1.

[0066] In this embodiment of the tunneling and anchoring equipment, by setting up the drilling rotation mechanism, when the connecting structure 301 connecting the drill rod is damaged, the vulnerable structure, namely the first rotating shaft 3, can be replaced by disassembling the first housing 1, thereby facilitating the maintenance of the drilling rotation mechanism and improving the overall working efficiency of the tunneling and anchoring equipment.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drilling rotary mechanism, characterized in that: comprising a first shell (1) and a second shell (2) connected detachably, a first rotating shaft (3) arranged rotatably in the first shell (1), and a second rotating shaft (4) arranged rotatably in the second shell (2); one end of the first rotating shaft (3) is provided with a connecting structure (301) for connecting a drill rod, the other end of the first rotating shaft (3) is detachably connected with the second rotating shaft (4) and can rotate synchronously with the second rotating shaft (4); the second rotating shaft (4) is used for being connected with a driving part (5).

2. The drilling rotary mechanism according to claim 1, characterized in that: the first rotating shaft (3) can be inserted into the first shell (1) along the axial direction detachably, and a limiting structure is arranged between the first rotating shaft (3) and the first shell (1), which can limit the depth of the first rotating shaft (3) inserted into the first shell (1).

3. The drilling rotary mechanism according to claim 1, characterized in that: a plug (401) is arranged on one of the first rotating shaft (3) and the second rotating shaft (4), and a plug hole is arranged on the other one, the first rotating shaft (3) and the second rotating shaft (4) are connected by plug assembly through the plug (401) and the plug hole; a limiting surface is arranged on the plug (401), and a matching surface is arranged in the plug hole, the limiting surface and the matching surface abut, and can limit the relative rotation between the first rotating shaft (3) and the second rotating shaft (4).

4. The drilling rotary mechanism according to claim 1, characterized in that: a water inlet hole (102) is arranged on the first shell (1), and a water groove (103) is arranged around the first rotating shaft (3), and the water inlet hole (102) is in communication with the water groove (103); a water passage (303) in communication with the water groove (103) is arranged in the first rotating shaft (3), and a water supply channel (304) in communication with the water passage (303) is arranged in the first rotating shaft (3), and the water supply channel (304) penetrates to one end of the first rotating shaft (3) provided with the connecting structure (301).

5. The drilling rotary mechanism according to claim 4, characterized in that: a first sealing structure (6) is arranged between the first shell (1) and the first rotating shaft (3), and the first sealing structure (6) is arranged on both sides of the water groove (103) along the axial direction.

6. The drilling rotary mechanism according to claim 1, characterized in that: the first rotating shaft (3) has an extension segment (305) extending out of the first shell (1), the connecting structure (301) is arranged at the end of the extension segment (305), and a water blocking ring (306) is arranged on one end of the extension segment (305) close to the first shell (1).

7. The drilling rotary mechanism according to any one of claims 1-6, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ The second rotating shaft (4) is formed with a radially extending shaft ring (403), and a second sealing structure (7) is arranged between the shaft ring (403) and the inner wall of the second shell (2), so that the shaft ring (403) and the second shell (2) form a containing cavity (201). The containing cavity (201) is provided with a bearing assembly sleeved on the second rotating shaft (4).

8. The drilling rotary mechanism according to claim 7, characterized in that: The second shell (2) is provided with an oil inlet (202) communicating with the containing cavity (201), and the oil inlet (202) is screwed with an oil inlet plug (203).

9. The drilling rotary mechanism according to claim 8, characterized in that: The end surface of the first shell (1) connected with the second shell (2) is formed with a mounting ring (104), which can be inserted into the gap between the second shell (2) and the shaft ring (403) and abut against the second sealing structure (7).

10. An excavating and anchoring device, characterized in that: The excavating and anchoring device has the drilling rotary mechanism according to any one of claims 1 to 9.

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