A drilling device for excavating rock anchor beams and rock platforms in hydropower stations

Abstract

This invention discloses a drilling device for excavating rock anchor beams and rock platforms in hydropower stations, comprising a base mechanism, a support mechanism, and a drilling mechanism. The base mechanism includes a support plate, a traveling wheel disposed on the bottom surface of the support plate, and a lifting assembly disposed on the support plate. The support mechanism includes a support seat installed on the lifting end of the lifting assembly, a first support rod extending from the outer surface of the support seat, a connecting rod installed on one end of the side surface of the first support rod, and a filter assembly disposed on the other end of the connecting rod. This drilling device for excavating rock anchor beams and rock platforms in hydropower stations allows the test assembly to extend when the drilling assembly retracts after excavation, thereby directly inserting the pipe into the newly drilled hole. During drilling, a dust pump draws dust into the interior for filtration, while airflow is discharged through the filter element, and the dust is stored inside for easy removal.

Description

Technical Field

[0001] This invention relates to the field of drilling technology for hydropower station construction, and in particular to a drilling device for excavating rock anchor beams and rock platforms in hydropower stations. Background Technology

[0002] During the excavation of underground powerhouses in large-scale hydropower and water conservancy projects, rock anchor beams and rock platforms need to be excavated. The rock anchor beams formed by the casting after the rock platform excavation are completed are mainly used for the installation and maintenance of electromechanical equipment in the underground powerhouse. During the construction process, an excavation and drilling device is required to excavate and drill holes in the rock anchor beams and rock platforms to meet the thickness of the protective layer and the required space for the rock platform excavation. However, conventional drilling devices may have some problems.

[0003] During drilling and excavation, a protective layer of 2.5 to 3.0 mm needs to be reserved. Grouting is required afterward. Inserting exhaust pipes and other pipes after drilling is very troublesome and requires manual insertion, which is very inconvenient. In addition, a lot of dust is generated during the operation, which is difficult to handle and affects the construction work. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the current drilling device for excavation of rock anchor beams and rock platforms in hydropower stations, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a drilling device for excavating rock anchor beams and rock platforms in hydropower stations, which aims to automatically insert pipes during the retraction after drilling and facilitate dust removal during operation.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a base mechanism, a support mechanism, and a drilling mechanism, wherein the base mechanism includes a support plate, a traveling wheel disposed on the bottom surface of the support plate, and a lifting assembly disposed on the support plate; the support mechanism includes a support seat installed on the lifting end of the lifting assembly, a first support rod extending out of the outer surface of the support seat, a connecting rod installed on one end of the side surface of the first support rod, and a filter assembly disposed on the other end of the connecting rod; the drilling mechanism includes a protective box connected to one end of the first support rod, a drilling assembly and a testing assembly installed on the protective box, and a dust inlet hole opened on one side surface of the protective box and extending to its lower surface, wherein a dust pump is installed in the dust inlet hole.

[0008] As a preferred embodiment of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention, the lifting assembly includes a first drive motor, a first telescopic rod, a limiting block, and a lifting frame; the first drive motor is installed on the outer surface of the support plate, and the first telescopic rod connected to its output end extends into the inner groove opened in the support plate.

[0009] As a preferred embodiment of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention, wherein: the limiting block connected to the end of the first telescopic rod can slide in the inner groove, and the other end of the lifting frame connected to the top surface of the limiting block is disposed on the outer surface of the support plate, and the lifting end of the lifting frame is on the outer surface of the support seat.

[0010] As a preferred embodiment of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention, the filter assembly includes a connecting pipe, a dust storage cabinet, and a filter element; one end of the connecting pipe is fixed below the dust inlet, and the other end is fixedly disposed on the outer surface of the support base and located above the dust storage cabinet; both the dust storage cabinet and the filter element can be disassembled and installed inside the support base, and the dust storage cabinet is located below the filter element.

[0011] As a preferred embodiment of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention, one end of the connecting rod is connected to the outer surface of the dust storage cabinet, the connecting rod is rotatable with the dust storage cabinet and the first support rod respectively, and both the dust storage cabinet and the first support rod are slidable in the support seat, and a dust storage bag is hung on the dust storage cabinet.

[0012] As a preferred embodiment of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention, the drilling assembly includes a second drive motor, a second telescopic rod, a third drive motor, and a drill bit; the second drive motor is fixed to the outer surface of the protective box, and the second telescopic rod connected to its output end passes through the interior of the protective box and connects to one end of the third drive motor, and the output end of the third drive motor is equipped with the drill bit that can extend to the outside of the protective box.

[0013] In a preferred embodiment of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention, the third drive motor and the drill bit are able to slide within the protective box via the second telescopic rod.

[0014] As a preferred embodiment of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention, the test component includes a transmission gear, a speed-changing gear, a connecting gear, a top rod, and a second support rod; the transmission gear, speed-changing gear, and connecting gear are all installed inside the protective box and can rotate, and the transmission gear meshes with the teeth provided on the speed-changing gear and the third drive motor, respectively; the connecting gears symmetrically connected to both ends of the speed-changing gear mesh with the second support rod, and one end of the second support rod extends through the outer surface of the protective box into the support base and is limited therein.

[0015] In a preferred embodiment of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention, the radius of the transmission gear is greater than the radius of the speed-changing gear, the speed-changing gear meshes with the top rod, and both the top rod and the second support rod can slide within the protective box.

[0016] As a preferred embodiment of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention, one end of the top rod is fitted with a detachable test tube.

[0017] The beneficial effects of this invention are: when the drilling assembly retracts after excavation, the test assembly extends, thereby directly inserting the pipe into the newly drilled hole. During the drilling process, a dust pump sucks dust into the interior for filtration, while airflow is discharged through the filter element. The dust is stored inside and can be disassembled and removed. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention.

[0020] Figure 2 This is a front sectional view of the connection between the lifting frame and the support plate of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention.

[0021] Figure 3 This is a front sectional view of the connection between the first support rod and the protective box in the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention.

[0022] Figure 4 This is a schematic diagram of the connection structure between the speed-changing gear and the transmission gear in the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention.

[0023] Figure 5 This is a side sectional view of the connection between the connecting pipe and the protective box of the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention.

[0024] Figure 6 This is a front sectional view of the connection between the connecting gear and the second support rod in the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention.

[0025] Figure 7 This is a side sectional view of the connection between the speed-changing gear and the transmission gear in the drilling device for excavating rock anchor beams and rock platforms in hydropower stations according to the present invention. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth. Example 1

[0030] Reference Figures 1-3 The first embodiment of the present invention provides a drilling device for excavating rock anchor beams and rock platforms in hydropower stations. This device includes a base mechanism 100, a support mechanism 200, and a drilling mechanism 300.

[0031] The base mechanism 100 includes a support plate 101, a travel wheel 102 disposed on the bottom surface of the support plate 101, and a lifting assembly 103 disposed on the support plate 101; the support mechanism 200 includes a support seat 201 installed on the lifting end of the lifting assembly 103, a first support rod 202 extending out of the outer surface of the support seat 201, a connecting rod 203 installed on one end of the side surface of the first support rod 202, and a filter assembly 204 disposed on the other end of the connecting rod 203; the drilling mechanism 300 includes a protective box 301 connected to one end of the first support rod 202, a drilling assembly 302 and a testing assembly 303 installed on the protective box 301, and a dust inlet 304 opened on one side surface of the protective box 301 and extending to its lower surface, and a dust pump is installed in the dust inlet 304.

[0032] During use, the support plate 101 can be moved to the required position by the traveling wheels 102, and then the support base 201 can be lifted by the lifting component 103, so that the protective box 301 supported by the first support rod 202 can be positioned at the position where drilling is required. Then the drilling component 302 can be started to drill. During drilling, the dust inlet 304 will suck in dust through the internal dust pump and then filter it through the dust pump. After drilling is completed, the testing component 303 can test the excavated hole and insert a pipe.

[0033] Furthermore, the lifting assembly 103 can use hydraulic, oil pressure, pneumatic or other methods to directly lift the support mechanism 200 and the drilling mechanism 300 to achieve lifting. A platform can be provided on one side of the support mechanism 200 so that the workers can lift it up for easy operation.

[0034] Furthermore, the traveling wheel 102 can be a universal self-locking wheel, or it can be a wheel that can retract inside the support plate 101. When the vehicle is stationary, the wheel can be retracted so that the support plate 101 can directly contact the ground, thereby further improving its stability. Example 2

[0035] Reference Figures 1-2 This is the second embodiment of the present invention, which differs from the first embodiment in that: the lifting assembly 103 includes a first drive motor 103a, a first telescopic rod 103b, a limiting block 103c, and a lifting frame 103d; the first drive motor 103a is installed on the outer surface of the support plate 101, and the first telescopic rod 103b connected to its output end extends into the inner groove A opened in the support plate 101; the limiting block 103c connected to the end of the first telescopic rod 103b can slide in the inner groove A, and the other end of the lifting frame 103d connected to the top surface of the limiting block 103c is disposed on the outer surface of the support plate 101, and the lifting end of the lifting frame 103d is on the outer surface of the support base 201.

[0036] Compared to Embodiment 1, during use, the first drive motor 103a drives the first telescopic rod 103b to extend and retract, so that the first telescopic rod 103b can drive the limiting block 103c fixedly connected at its end to slide in the inner groove A. This allows the limiting block 103c to move one side of the bottom end of the lifting frame 103d, while the other side of the bottom end of the lifting frame 103d does not move, thus changing the height of the lifting frame 103d and achieving the purpose of raising and lowering the height of the support base 201.

[0037] Furthermore, the first drive motor 103a can be configured as two sets, thereby improving the stability of the sliding of the limit block 103c, and is not limited to operating by using oil pressure, hydraulic pressure and pneumatic pressure, and the lifting frame 103d is symmetrically arranged with two or more sets at both ends.

[0038] Furthermore, the first telescopic rod 103b driven by the first drive motor 103a can also be directly connected to the bottom of the support base 201, so that when the first drive motor 103a is started, the first drive motor 103a will directly drive the support base 201 to rise and fall through the first telescopic rod 103b, and the overall stability will be improved through the lifting frame 103d connected to the bottom of the support base 201.

[0039] The remaining structure is the same as that in Example 1. Example 3

[0040] Reference Figures 1-3 and Figure 5 This is the third embodiment of the present invention, which differs from the second embodiment in that: the filter assembly 204 includes a connecting pipe 204a, a dust collection cabinet 204b, and a filter element 204c; one end of the connecting pipe 204a is fixed below the dust inlet 304, and the other end is fixedly disposed on the outer surface of the support base 201 and located above the dust collection cabinet 204b; both the dust collection cabinet 204b and the filter element 204c can be detached and installed inside the support base 201, and the dust collection cabinet 204b is located below the filter element 204c; one end of the connecting rod 203 is connected to the outer surface of the dust collection cabinet 204b, and the connecting rod 203 can rotate with the dust collection cabinet 204b and the first support rod 202 respectively, and both the dust collection cabinet 204b and the first support rod 202 can slide in the support base 201, and a dust collection bag C is hung on the dust collection cabinet 204b.

[0041] Compared to Example 2, during use, when dust is sucked in through the dust inlet 304, it is introduced and blown into the dust collection cabinet 204b through the connecting pipe 204a. The dust falls directly into the dust collection bag C, and the gas inside continuously expands. Through pressure, the gas is squeezed towards the filter element 204c, causing the filter element 204c to filter the gas. The dust is always blocked in the dust collection bag C, making it convenient to directly remove the dust collection bag C and empty the dust during subsequent cleaning.

[0042] Furthermore, the filter element 204c can be installed using a threaded connection, making it easy to disassemble and replace. The filter element 204c can be positioned so that the filtered gas can be blown towards the workers, preventing the gas from being too stuffy and unsuitable when working underground.

[0043] Furthermore, during operation, the upward movement of the first support rod 202 will cause one end of the connecting rod 203 to move. Since the length of the connecting rod 203 remains unchanged, the other end of the connecting rod 203 will also move accordingly. However, since the connecting rod 203 is limited to the dust collection cabinet 204b and the first support rod 202 and can rotate, when the first support rod 202 moves, it will push or pull the dust collection cabinet 204b, which is limited to sliding, through the connecting rod 203. This makes it convenient for the dust collection cabinet 204b to be pushed out and pulled back, facilitating the replacement of the dust collection bag C.

[0044] The dust collection bag C is installed by the hooks set in the dust collection cabinet 204b, or it can be installed inside the dust collection cabinet 204b by suction cup or by directly putting it on. Alternatively, a one-way valve can be set at the inlet of the dust entering the dust collection cabinet 204b to guide the dust away.

[0045] The connecting pipe 204a can also be made of corrugated pipe or other expandable fittings, which can be moved with the height adjustment without breaking.

[0046] The remaining structure is the same as that in Example 2. Example 4

[0047] Reference Figures 1-4 This is the fourth embodiment of the present invention, which differs from the third embodiment in that: the drilling assembly 302 includes a second drive motor 302a, a second telescopic rod 302b, a third drive motor 302c, and a drill bit 302d; the second drive motor 302a is fixed to the outer surface of the protective box 301, and the second telescopic rod 302b connected to its output end passes through the interior of the protective box 301 and connects to one end of the second drive motor 302a; the output end of the third drive motor 302c is equipped with a drill bit 302d that can extend to the outside of the protective box 301; the third drive motor 302c and the drill bit 302d can slide in the protective box 301 through the second telescopic rod 302b.

[0048] Compared to Embodiment 3, during use, the second drive motor 302a drives the third drive motor 302c to move via the second telescopic rod 302b, so that the third drive motor 302c drives the drill bit 302d to rotate, and the rotating drill bit 302d can change its position to excavate and drill holes in the rock platform.

[0049] Furthermore, the second drive unit 302a is not limited to using pneumatic, hydraulic, or oil pressure to drive the second telescopic rod 302b to extend or retract, thereby changing the position of the third drive unit 302c. The third drive unit 302c uses a motor to drive the drill bit 302d to rotate, and the rotational power of the third drive unit 302c can be proportional to the power of the second drive unit 302a to drive the extension and retraction.

[0050] It can be configured such that when the second drive motor 302a slowly moves the third drive motor 302c through the second telescopic rod 302b, the drive rotation speed of the third drive motor 302c is relatively slow, which facilitates slow construction and improves stability. When the second drive motor 302a quickly moves the third drive motor 302c through the second telescopic rod 302b, the drive rotation speed of the third drive motor 302c can be adjusted to be fast, so that the drill bit 302d also rotates and moves quickly, improving efficiency. Alternatively, it can be customized for different applications.

[0051] The remaining structure is the same as that in Example 3. Example 5

[0052] Reference Figures 1-7 This is the fifth embodiment of the present invention, which differs from the fourth embodiment in that: the test component 303 includes a transmission gear 303a, a speed-changing gear 303b, a connecting gear 303c, a push rod 303d, and a second support rod 303e; the transmission gear 303a, the speed-changing gear 303b, and the connecting gear 303c are all installed inside the protective housing 301 and can rotate, and the transmission gear 303a meshes with the teeth on the speed-changing gear 303b and the third drive motor 302c respectively, and the speed-changing gear 303b... The connecting gears 303c and the second support rod 303e, which are symmetrically connected at both ends of 03b, mesh with each other. One end of the second support rod 303e extends through the outer surface of the protective box 301 and into the support base 201 where it is limited. The radius of the transmission gear 303a is larger than the radius of the speed-changing gear 303b. The speed-changing gear 303b meshes with the push rod 303d. Both the push rod 303d and the second support rod 303e can slide in the protective box 301. One end of the push rod 303d is fitted with a test tube B, which can be disassembled.

[0053] Compared to Embodiment 4, during use, the movement of the third drive motor 302c engages with the transmission gear 303a, allowing the transmission gear 303a to rotate and engage with the speed-changing gear 303b. This allows the speed-changing gear 303b to effectively drive the connecting gear 303c to rotate and engage with the second support rod 303e, causing the second support rod 303e to slide. The bottom end of the second support rod 303e is limited in the support base 201 and cannot move, allowing the second support rod 303e to adjust the overall height of the protective box 301 through the meshing force. At the same time, the rotation of the speed-changing gear 303b engages with the push rod 303d, allowing the push rod 303d to insert the test tube B into the drilled hole. The friction force causes the test tube B to be locked in place, and the retraction of the push rod 303d will not pull out the test tube B.

[0054] Furthermore, the radius of the transmission gear 303a is larger than that of the speed-changing gear 303b, so that when the two mesh, the rotational speed of the speed-changing gear 303b will be faster than that of the transmission gear 303a. Since the speed-changing gear 303b and the connecting gear 303c rotate at the same speed, but the radius of the connecting gear 303c is larger, the sliding speed of the second support rod 303e after the connecting gear 303c meshes with the second support rod 303e is faster than the extension speed of the speed-changing gear 303b meshing with the push rod 303d. The speed-changing gear 303b is provided in two sets to prevent the push rod 303d from being meshed in the opposite direction.

[0055] This ensures that the second support rod 303e lifts the protective box 301 faster than the top rod 303d inserts the test tube B into the hole. This prevents the test tube B from failing to fit into the drilled hole due to insufficient lifting speed of the protective box 301. The test tube B can be set to have a radius slightly smaller than that of the drill bit 302d, thus ensuring an interference fit when inserted into the hole and preventing the test tube B from slipping out.

[0056] The remaining structure is the same as that in Example 4.

[0057] Combined with appendix Figures 1-7 As shown, after the entire unit is moved to the required work location by the travel wheels 102, the first drive motor 103a on the support plate 101 is started. This causes the first drive motor 103a to adjust the position of the limit block 103c through the first telescopic rod 103b, which in turn adjusts the height of the lifting frame 103d. This causes the lifting frame 103d to lift the support base 201 and the protective box 301 together to the position where drilling is required.

[0058] At this point, the third drive motor 302c can be started to rotate the drill bit 302d. Then, the second drive motor 302a is started to adjust the position of the drill bit 302d through the second telescopic rod 302b, so that the drill bit 302d can excavate and drill holes in the rock anchor beam and rock platform. During this process, the dust pump is started to suck the dust generated by drilling from the dust inlet 304, and then discharge it into the dust storage cabinet 204b through the connecting pipe 204a. The dust is filtered by the filter element 204c, while the dust remains inside the dust storage bag C.

[0059] After drilling, the second drive motor 302a pulls the third drive motor 302c back via the second telescopic rod 302b until the third drive motor 302c moves to the rear. During this process, the third drive motor 302c engages with the transmission gear 303a, allowing the transmission gear 303a to rotate and engage with the speed-changing gear 303b. The speed-changing gear 303b then rotates and engages with the push rod 303d, allowing the push rod 303d to extend. Simultaneously, the rotation of the speed-changing gear 303b drives the connecting gear 303c to rotate and engage with the second support rod 303e, causing the second support rod 303e to slide quickly and lift the protective box 301. When the protective box 301 is lifted, the test tube B on the push rod 303d is inserted into the drilled hole. The friction from the rapid insertion into the hole ensures that the test tube B will not be pulled out even when the push rod 303d retracts.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A rock anchor beam rock bench excavation drilling device for a hydroelectric power station, characterized by: The utility model relates to a drilling device for soil testing, which comprises a base mechanism (100), a support mechanism (200), a drilling mechanism (300) and a test assembly (303). The base mechanism (100) comprises a support plate (101), a running wheel (102) arranged on the bottom surface of the support plate (101) and a lifting assembly (103) arranged on the support plate (101). The support mechanism (200) comprises a support seat (201) mounted on the lifting end of the lifting assembly (103), a first support rod (202) extending out of the outer surface of the support seat (201), a connecting rod (203) mounted on one end of the side surface of the first support rod (202) and a filter assembly (204) arranged on the other end of the connecting rod (203). The drilling mechanism (300) comprises a protective box (301) connected to one end of the first support rod (202), a drilling assembly (302) and a test assembly (303) mounted on the protective box (301), and a dust inlet hole (304) opened on one side surface of the protective box (301) and extending to the lower surface thereof, wherein a dust suction pump is mounted in the dust inlet hole (304). The drilling assembly (302) comprises a second driving machine (302a), a second telescopic rod (302b), a third driving machine (302c) and a drill bit (302d). The second driving machine (302a) is fixed to the outer surface of the protective box (301), and the second telescopic rod (302b) connected to the output end of the second driving machine (302a) passes through the interior of the protective box (301) to connect one end of the third driving machine (302c), and the output end of the third driving machine (302c) is provided with the drill bit (302d) which can extend out of the protective box (301). The third driving machine (302c) and the drill bit (302d) can slide in the protective box (301) through the second telescopic rod (302b). The test assembly (303) comprises a transmission gear (303a), a variable speed gear (303b), a connecting gear (303c), a top rod (303d) and a second support rod (303e). The transmission gear (303a), the variable speed gear (303b) and the connecting gear (303c) are all rotatable and mounted in the interior of the protective box (301), the transmission gear (303a) is engaged with the teeth arranged on the variable speed gear (303b) and the third driving machine (302c), respectively, the connecting gears (303c) connected to the two ends of the variable speed gear (303b) are engaged with the second support rod (303e), and one end of the second support rod (303e) extends through the outer surface of the protective box (301) to the support seat (201) and is limited. The movement of the third driving machine (302c) will engage with the transmission gear (303a), so that the transmission gear (303a) can rotate and engage with the gear shift gear (303b), so that the gear shift gear (303b) can effectively drive the connecting gear (303c) to rotate and engage with the second support rod (303e), so that the second support rod (303e) slides, and the bottom end of the second support rod (303e) is limited in the support seat (201) and cannot move, so that the second support rod (303e) can adjust the overall height of the protection box (301) through the engagement force, and at the same time the rotation of the gear shift gear (303b) will engage with the top rod (303d), so that the top rod (303d) inserts the test tube (B) into the drilled hole, and the test tube (B) is clamped through the friction force, and the retraction of the top rod (303d) will not pull out the test tube (B).

2. The hydropower rock-anchored beam rock bench excavation drilling apparatus of claim 1, wherein: The lifting assembly (103) comprises a first driving machine (103a), a first telescopic rod (103b), a limiting block (103c) and a lifting frame (103d). The first driving machine (103a) is installed on the outer surface of the support plate (101), and the first telescopic rod (103b) connected to the output end of the first driving machine (103a) extends into the inner groove (A) of the support plate (101).

3. The rock-anchored beam rock bench excavation drilling apparatus of claim 2, wherein: The limiting block (103c) connected to the end of the first telescopic rod (103b) can slide in the inner groove (A), and the lifting frame (103d) connected to the top surface of the limiting block (103c) is arranged on the outer surface of the support plate (101), and the lifting end of the lifting frame (103d) is arranged on the outer surface of the support seat (201).

4. The rock-anchored beam rock bench excavation drilling device of any one of claims 1-3, characterized in that: The filter assembly (204) comprises a connecting pipe (204a), a dust storage cabinet (204b) and a filter core (204c). One end of the connecting pipe (204a) is fixed below the dust inlet hole (304), and the other end is fixed on the outer surface of the support seat (201) and above the dust storage cabinet (204b). The dust storage cabinet (204b) and the filter core (204c) can be disassembled in the support seat (201), and the dust storage cabinet (204b) is below the filter core (204c).

5. The hydropower rock-anchored beam rock bench excavation drilling apparatus of claim 4, wherein: One end of the connecting rod (203) is connected to the outer surface of the dust storage cabinet (204b), and the connecting rod (203) can rotate with the dust storage cabinet (204b) and the first support rod (202) respectively. The dust storage cabinet (204b) and the first support rod (202) can slide in the support seat (201), and the dust storage cabinet (204b) has a dust storage bag (C) hung thereon.

6. The hydropower rock-anchored beam rock bench excavation drilling apparatus of claim 5, wherein: The radius of the transmission gear (303a) is greater than the radius of the gear shift gear (303b), the gear shift gear (303b) engages with the top rod (303d), and the top rod (303d) and the second support rod (303e) can slide in the protection box (301).

7. The hydropower rock-anchored beam rock bench excavation drilling apparatus of claim 5 or 6, wherein: One end of the top rod (303d) is sleeved with a detachable test tube (B).

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