Drilling device for underground rock soil

Abstract

The utility model relates to the technical field of drilling devices, in particular to an underground rock soil drilling device which comprises a moving device, a height control device and a driving assembly, the lower end of the driving assembly is fixedly connected with a power transmission assembly, the bottom end of the power transmission assembly is fixedly connected with a drilling assembly, and the right end of the driving assembly is provided with a pressure adjusting assembly. The drilling assembly comprises a lantern ring plate, a fixing bolt is spirally attached to the inner side of the lantern ring plate, a sleeve is fixedly connected to the inner side of the lantern ring plate, a hollow groove is formed in the inner side of the sleeve, a spring is fixedly connected to the bottom end of the lantern ring plate, a barrel shell is fixedly connected to the bottom end of the spring, a drill rod is rotatably connected to the inner side of the barrel shell, and a telescopic rod is fixedly connected to the top end of the barrel shell. According to the pressure adjusting device, the pressure applied to the rock stratum can be automatically adjusted according to the hardness of the rock stratum, the flexibility and safety of the drilling process are remarkably improved, and the drilling quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling devices, and particularly relates to a drilling device for underground rock and soil. Background Art

[0002] A drilling device for underground rock and soil is a device specifically used to obtain rock and soil samples from underground. It is a process of obtaining rock and soil samples from a certain depth underground. This process is usually for geological exploration, engineering design, environmental assessment or scientific research. During the drilling process, the drill bit penetrates the formation under the drive of power, breaks the rock and soil and takes it out, forming a continuous rock and soil columnar sample for analyzing information such as the composition, structure, and physical properties of underground rock and soil, providing an important basis for related fields. This kind of device is widely used in fields such as geological exploration, engineering construction, and environmental monitoring to help people understand information such as the physical properties, composition, and structure of underground rock and soil;

[0003] Before drilling, understanding the rock types and distribution in the drilling area through geological surveys and explorations is to optimize the drilling plan, reduce construction risks, improve sample quality and construction efficiency, reduce costs, and protect the environment. By mastering the properties and distribution of rocks in advance, drilling equipment and technologies can be reasonably selected, drilling parameters can be adjusted, accidents such as hole wall collapse and sticking of the drill can be prevented, the representativeness and accuracy of the samples can be ensured, and at the same time, equipment wear and construction time can be reduced, and adverse impacts on the environment can be avoided, thus providing a reliable basis for subsequent geological analysis and engineering design;

[0004] During the formation of sedimentary rocks, the composition, particle size, and sedimentation rate of sediments will vary with time and space, resulting in the alternation of rock layers with different hardnesses and physical properties, forming a phenomenon of alternating hard and soft layers. During the drilling process, a torque sensor is installed between the drill bit and the drill pipe to detect the torque borne by the drill bit during rotation in real time. When the drill bit encounters rock layers with different hardnesses, the torque will change;

[0005] For a drilling device used in a sedimentary rock environment, this characteristic makes the pressure exerted on the rock layer during drilling need to be precisely controlled. When drilling a soft rock layer, if the applied pressure is too large, it is easy to cause hole wall collapse. When drilling a hard rock layer, if the pressure is too small, the drilling efficiency will be reduced, and even the sticking of the drill may occur. If the applied pressure during drilling cannot be effectively controlled, it will not only affect the drilling efficiency and sample quality, but also easily lead to equipment damage, increased construction costs, and delays in the construction progress, and even pose safety risks. Therefore, a drilling device for underground rock and soil is proposed to solve the above problems. Content of the Utility Model

[0006] The purpose of the present utility model is to provide a drilling device for underground rock and soil, so as to solve the problem that if the pressure applied during drilling cannot be effectively controlled, it will not only affect the drilling efficiency and sample quality, but also easily cause equipment damage, increase construction costs and delay the construction progress, and even pose safety risks.

[0007] To achieve the above object, the present utility model provides the following technical solutions:

[0008] A drilling device for underground rock and soil, including a moving device, a height control device and a driving assembly. The lower end of the driving assembly is fixedly connected with a power transmission assembly, the bottom end of the power transmission assembly is fixedly connected with a drilling assembly, a pressure regulating assembly is installed at the right end of the driving assembly. The drilling assembly includes a collar plate, a fixing bolt is spirally fitted inside the collar plate, a sleeve is fixedly connected inside the collar plate, a hollow groove is provided inside the sleeve, a spring is fixedly connected to the bottom end of the collar plate, a cylinder shell is fixedly connected to the bottom end of the spring, a drill rod is rotatably connected inside the cylinder shell, a telescopic rod is fixedly connected to the top end of the cylinder shell, a drill bit is fixedly connected to the bottom end of the drill rod. The pressure regulating assembly includes a second servo motor, the end of the main shaft of the second servo motor is fixedly connected with a second threaded rod, an internally threaded cylinder and an internally threaded block are spirally connected to the outside of the second threaded rod, a side seat plate is slidably connected to the outside of the internally threaded cylinder, a stop rod is fixedly connected to the right side of the internally threaded block, and the left side of the side seat plate is fixedly connected to the right side of the cylinder shell.

[0009] As a further optimized content of the present utility model, the height control device includes a fixed frame plate, a first servo motor is fixedly connected to the top end of the fixed frame plate, a shaft hole is provided inside the fixed frame plate, a first threaded rod is rotatably connected inside the shaft hole of the fixed frame plate, the top end of the first threaded rod is fixedly connected to the end of the main shaft of the first servo motor, a guide rod is fixedly connected to the right end of the fixed frame plate, and the left side of the fixed frame plate is fixedly connected to the right side of the moving device.

[0010] As a further optimized content of the present utility model, the outside of the first threaded rod is spirally connected to a threaded hole provided inside the passive plate, a sliding hole is provided inside the passive plate, the sliding hole of the passive plate is slidably connected to the outside of the guide rod, and a reinforcing plate is fixedly connected to the right side of the passive plate.

[0011] As a further optimized content of the present utility model, specifically: the driving component includes a fixed frame, a extending plate is fixedly connected to the right side of the fixed frame, a support plate and a flange are fixedly connected to one side of the fixed frame, the left side of the fixed frame is fixedly connected to the right side of a reinforcing plate, a extending plate is fixedly connected to the right side of the support plate, the flange is fixedly connected to a collar plate through a fixing bolt, the top end of the support plate is fixedly connected to the bottom end of the driving motor housing, a through hole is opened inside the support plate, the main shaft of the driving motor extends out of the inside of the through hole of the support plate, the main shaft of the driving motor is rotatably connected to the inside of a hollow groove, and the bottom end of the fixed frame is fixedly connected to the top end of a telescopic rod.

[0012] As a further optimized content of the present utility model, specifically: the top end of the extending plate is fixedly connected to the bottom end of the second servo motor housing, two through holes are opened inside the extending plate, the through hole at the left end of the extending plate is rotatably connected to the outside of a second threaded rod, and the through hole at the right end of the extending plate is slidably connected to the outside of a stop rod.

[0013] As a further optimized content of the present utility model, specifically: the power transmission component includes a limit housing, a second guide rail is fixedly connected to the inside of the limit housing, a first reinforcing strip is fixedly connected to the inside of the limit housing, the outside of the first reinforcing strip slides inside a first guide rail, the first guide rail is opened inside a movable column, second reinforcing strips are fixedly connected to the front end and the rear end of the movable column, the second reinforcing strips are slidably connected to the inside of the second guide rail, the top end of the limit housing is fixedly connected to the end of the main shaft of the driving motor, and the bottom end of the movable column is fixedly connected to the top end of a drill rod.

[0014] As a further optimized content of the present utility model, specifically: a limit piece is fixedly connected to the bottom end of the internal thread hole cylinder, a sliding hole is opened inside the side seat plate, the outside of the internal thread hole cylinder is slidably connected to the inside of the sliding hole of the side seat plate, and a spacing is provided between the bottom end of the internal thread hole block and the internal thread hole cylinder.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] In the present utility model, through the provided height control device, drilling component and pressure regulating component, the device can automatically adjust the pressure applied to the rock formation according to the hardness of the rock formation, significantly improving the flexibility and safety of the drilling process. When encountering rock formations of different hardnesses, the elastic thrust and compression range of the control spring are controlled to precisely control the pressure of the drill bit on the rock formation, effectively avoiding problems such as hole wall collapse, accelerated wear of the drill bit or drill sticking caused by improper pressure. This design not only improves the drilling efficiency and sample quality, but also reduces the risk of equipment damage, construction costs and safety risks, providing reliable equipment support for geological exploration and engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 Schematic diagram of the height control device structure of the present utility model;

[0019] Figure 3 Schematic diagram of the first threaded rod structure of the present utility model;

[0020] Figure 4 Schematic diagram of the passive plate structure of the present utility model;

[0021] Figure 5 Schematic diagram of the sectional structure of the drilling component of the present utility model;

[0022] Figure 6 Schematic diagram of the driving component structure of the present utility model;

[0023] Figure 7 Schematic diagram of the sectional structure of the fixed frame of the present utility model;

[0024] Figure 8 Schematic diagram of the telescopic rod structure of the present utility model;

[0025] Figure 9 Schematic diagram of the sectional structure of the spring of the present utility model;

[0026] Figure 10 Schematic diagram of the sectional structure of the power transmission component of the present utility model;

[0027] Figure 11 Schematic diagram of the sectional structure of the pressure regulating component of the present utility model;

[0028] Figure 12 Exploded structure diagram of the pressure regulating component of the present utility model.

[0029] In the figure: 1. Moving device;

[0030] 2. Height control device; 21. Fixed frame plate; 22. First servo motor; 23. First threaded rod; 24. Guide rod; 25. Passive plate; 26. Reinforcing plate;

[0031] 3. Driving component; 31. Fixed frame; 32. Extension plate; 33. Support plate; 34. Flange; 35. Driving motor;

[0032] 4. Drilling component; 41. Collar plate; 42. Fixed bolt; 43. Sleeve; 44. Hollow groove; 45. Spring; 46. Cylinder shell; 47. Drill rod; 48. Telescopic rod; 49. Drill bit;

[0033] 5. Power transmission component; 51. Limit housing; 52. First reinforcing strip; 53. Movable column; 54. First guiding track; 55. Second guiding track; 56. Second reinforcing strip;

[0034] 6. Pressure regulating component; 61. Second servo motor; 62. Second threaded rod; 63. Inner threaded hole cylinder; 64. Side seat plate; 65. Inner threaded hole block; 66. Stop rod. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] It should be noted that the terms used here are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] Please refer to Figures 1-12 , the present invention provides a technical solution:

[0038] A drilling device for underground rock and soil includes a moving device 1, a height control device 2, and a driving component 3. The lower end of the driving component 3 is fixedly connected to a power transmission component 5, the bottom end of the power transmission component 5 is fixedly connected to a drilling component 4, the right end of the driving component 3 is provided with a pressure regulating component 6. The drilling component 4 includes a collar plate 41, a fixing bolt 42 is spirally fitted inside the collar plate 41, a sleeve 43 is fixedly connected inside the collar plate 41, a hollow groove 44 is opened inside the sleeve 43, a spring 45 is fixedly connected to the bottom end of the collar plate 41, a cylinder shell 46 is fixedly connected to the bottom end of the spring 45, a drill rod 47 is rotatably connected inside the cylinder shell 46, a telescopic rod 48 is fixedly connected to the top end of the cylinder shell 46, a drill bit 49 is fixedly connected to the bottom end of the drill rod 47. The pressure regulating component 6 includes a second servo motor 61, a second threaded rod 62 is fixedly connected to the end of the main shaft of the second servo motor 61, an inner threaded hole cylinder 63 and an inner threaded hole block 65 are spirally connected to the outside of the second threaded rod 62, a side seat plate 64 is slidably connected to the outside of the inner threaded hole cylinder 63, a stop rod 66 is fixedly connected to the right side of the inner threaded hole block 65, and the left side of the side seat plate 64 is fixedly connected to the right side of the cylinder shell 46.

[0039] As a further implementation of this solution, the height control device 2 includes a fixed frame plate 21. At the top of the fixed frame plate 21, a first servo motor 22 is fixedly connected. An axial hole is provided inside the fixed frame plate 21. Inside the axial hole of the fixed frame plate 21, a first threaded rod 23 is rotatably connected. The top of the first threaded rod 23 is fixedly connected to the end of the main shaft of the first servo motor 22. A guide rod 24 is fixedly connected to the right end of the fixed frame plate 21. The left side of the fixed frame plate 21 is fixedly connected to the right side of the moving device 1. The outside of the first threaded rod 23 is helically connected to a threaded hole provided inside the passive plate 25. A sliding hole is provided inside the passive plate 25. The sliding hole of the passive plate 25 is slidably connected to the outside of the guide rod 24. A reinforcing plate 26 is fixedly connected to the right side of the passive plate 25. Through the above settings, this design enables the device to adjust the position of the drill bit 49 according to the rock formation hardness, improves the adaptability of the device to rock formations of different hardnesses, and enhances the stability and safety of the drilling process;

[0040] As a further implementation of this solution, the driving component 3 includes a fixed machine frame 31. A extension plate 32 is fixedly connected to the right side of the fixed machine frame 31. A support plate 33 and a flange plate 34 are fixedly connected to one side of the fixed machine frame 31. The left side of the fixed machine frame 31 is fixedly connected to the right side of the reinforcing plate 26. A extension plate 32 is fixedly connected to the right side of the support plate 33. The flange plate 34 is fixedly connected to the collar plate 41 through a fixing bolt 42. The top of the support plate 33 is fixedly connected to the bottom end of the housing of the driving motor 35. A through hole is provided inside the support plate 33. The main shaft of the driving motor 35 extends out of the inside of the through hole of the support plate 33. The main shaft of the driving motor 35 is rotatably connected to the inside of the hollow groove 44. The bottom end of the fixed machine frame 31 is fixedly connected to the top end of the telescopic rod 48. Through the above settings, the height control device 2 can control the height position of the fixed machine frame 31. At the same time, the design of the fixed machine frame 31 and its connecting components provides a stable structural support for the device. At the same time, through the connection between the main shaft of the driving motor 35 and the hollow groove 44, the transmission of power is realized, thereby driving the drill bit 49 to drill the rock formation;

[0041] As a further implementation of this solution, the top of the extension plate 32 is fixedly connected to the bottom end of the housing of the second servo motor 61. Two through holes are provided inside the extension plate 32. The through hole at the left end of the extension plate 32 is rotatably connected to the outside of the second threaded rod 62. The through hole at the right end of the extension plate 32 is slidably connected to the outside of the stop rod 66. Through the above settings, the distance between the sleeve 43 and the cylinder shell 46 can be controlled through the pressure regulating component 6, thereby realizing the control of the compression amount of the spring 45;

[0042] As a further implementation of this solution, the power transmission component 5 includes a limit shell 51. A second guiding track 55 is fixedly connected to the inner side of the limit shell 51. A first reinforcing strip 52 is fixedly connected to the inner side of the limit shell 51. The outer side of the first reinforcing strip 52 slides inside the first guiding track 54. The first guiding track 54 is opened inside the movable column 53. Second reinforcing strips 56 are fixedly connected to both the front end and the rear end of the movable column 53. The second reinforcing strips 56 are slidably connected inside the second guiding track 55. The top end of the limit shell 51 is fixedly connected to the end of the main shaft of the driving motor 35. The bottom end of the movable column 53 is fixedly connected to the top end of the drill pipe 47. Through the above settings, the power transmission component 5 is telescoped when controlling the distance between the sleeve 43 and the cylinder shell 46. At the same time, the power transmission component 5 plays a role in transmitting power to the drill pipe 47. The internal structure of the power transmission component 5 can improve the effect of resisting shear force;

[0043] As a further implementation of this solution, a limit piece is fixedly connected to the bottom end of the internal thread hole cylinder 63. A sliding hole is opened inside the side seat plate 64. The outer side of the internal thread hole cylinder 63 is slidably connected inside the sliding hole of the side seat plate 64. A distance is provided between the bottom end of the internal thread hole block 65 and the internal thread hole cylinder 63. Through the above settings, the design of the limit piece and the sliding hole provides precise limit and guidance for the movement of the internal thread hole cylinder 63 and the side seat plate 64. This design can effectively control the compression amount and the extension amount of the spring 45, thereby realizing precise control of the pressure applied to the drill bit 49, improving the stability of the drilling process and the sample quality, and reducing the risk of equipment damage.

[0044] Workflow: When controlling the force applied to the rock formation during drilling according to the hardness of the rock formation, the device is moved to the position where drilling is required through the moving device 1. The height of the drilling assembly 4 is controlled through the height control device 2. The first servo motor 22 is started to drive the first threaded rod 23 to rotate. The first threaded rod 23 drives the passive plate 25 connected by external spiral to move downward. The passive plate 25 slides on the outside of the guide rod 24. The passive plate 25 drives the reinforcement plate 26 and the driving assembly 3 to move downward as a whole. The driving assembly 3 drives the drilling assembly 4, the power transmission assembly 5 and the pressure regulating assembly 6 to move downward simultaneously. When controlling the rotation of the drill pipe 47 and the drill bit 49, the driving motor 35 is started. The main shaft of the driving motor 35 rotates inside the hollow groove 44 opened in the support plate 33 and the sleeve 43. The driving motor 35 drives the limit shell 51 and the first reinforcing strip 52 to rotate. The rotation of the first reinforcing strip 52 drives the movable column 53 and the first guide track 54 to rotate. Through the first reinforcing strip 52, the first guide track 54, the second guide track 55 and the second reinforcing strip 56, the effect of improving the shear resistance of the movable column 53 can be achieved. At the same time, the power transmission assembly 5 plays an expanding and contracting effect. The rotation of the movable column 53 drives the drill pipe 47 fixedly connected to the bottom end to rotate, thereby driving the drill bit 49 to rotate. At this time, the drill pipe 47 is rotationally connected inside the cylinder shell 46. The rock formation is drilled through the drill bit 49. Through the elastic thrust of the spring 45, the cylinder shell 46 is kept moving downward. The distance between the drill bit 49 and the rock formation is controlled through the height control device 2. The telescopic rod 48 plays a role in limiting the movement of the cylinder shell 46. At this time, the cylinder shell 46 and the drill pipe 47 will move up and down within the interval. The movement of the cylinder shell 46 drives the side seat plate 64 to move. The side seat plate 64 slides on the outside of the internal thread hole cylinder 63. The limiting piece and the stop rod 66 at the bottom end of the internal thread hole cylinder 63 play a role in limiting the up and down movement interval of the drill pipe 47 and the drill bit 49. In this way, the compression amount of the spring 45 can be controlled, so that the pressure applied by the drill bit 49 to the rock formation is controlled within a certain range. The drilled rock formation enters the inside of the drill pipe 47 and the drill bit 49;

[0045] When the hardness of the rock formation changes, the torque sensor of the existing technology is used to detect the hardness of the rock formation during drilling. Then, the existing controller starts the second servo motor 61 to drive the second threaded rod 62 to rotate. The rotation of the second threaded rod 62 drives the internal threaded hole block 65 and the internal threaded hole cylinder 63 to move simultaneously. If the internal threaded hole block 65 and the internal threaded hole cylinder 63 move upward simultaneously, the compression amount of the spring 45 will be greater at this time. According to Hooke's law, the compression amount of the spring 45 multiplied by the spring constant of the spring 45 is equal to the elastic force of the spring 45. At this time, the elastic force of the spring 45 is greater. The limiting piece of the internal threaded hole cylinder 63 pushes the side seat plate 64 upward. At the same time, the internal threaded hole block 65 will drive the stop rod 66 to move upward. The stop rod 66 is slidably connected inside the extension plate 32, so that the distance between the stop rod 66 and the side seat plate 64 remains the same. Then, control the moving distance of the side seat plate 64. When drilling is switched from a rock formation with higher hardness to a rock formation with lower hardness, during the process of controlling the side seat plate 64 to move downward, the height control device 2 is also used to control the pressure regulating assembly 6 and the drilling assembly 4 to move upward by the same distance. This can ensure that the spring 45 stretches, so as to realize the work of applying force to the rock formation by the drill bit 49 according to the hardness of the rock formation;

[0046] Based on the above principle, the device can control the force applied by the drill bit 49 to the rock formation according to the hardness of the rock formation. This improves the flexibility of the device's use, significantly reduces the impact on the drilling efficiency and sample quality, not only improves the drilling efficiency and sample quality, but also reduces the risk of equipment damage and safety risks, providing reliable equipment support for geological exploration and engineering construction.

[0047] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underground rock drilling device, comprising a moving device (1), a height control device (2) and a driving assembly (3), characterized in that: The lower end of the driving assembly (3) is fixedly connected to a power transmission assembly (5), the bottom end of the power transmission assembly (5) is fixedly connected to a drilling assembly (4), and the right end of the driving assembly (3) is installed with a pressure regulating assembly (6); The drilling assembly (4) comprises a collar plate (41), a fixing bolt (42) is spirally attached to the inner side of the collar plate (41), a sleeve (43) is fixedly connected to the inner side of the collar plate (41), a hollow groove (44) is provided on the inner side of the sleeve (43), a spring (45) is fixedly connected to the bottom end of the collar plate (41), a cylinder shell (46) is fixedly connected to the bottom end of the spring (45), a drill rod (47) is rotatably connected to the inner side of the cylinder shell (46), a telescopic rod (48) is fixedly connected to the top end of the cylinder shell (46), and a drill bit (49) is fixedly connected to the bottom end of the drill rod (47); The pressure regulating assembly (6) comprises a second servo motor (61), a second threaded rod (62) is fixedly connected to the end of the main shaft of the second servo motor (61), an inner screw hole cylinder (63) and an inner screw hole block (65) are spirally connected to the outer side of the second threaded rod (62), a side seat plate (64) is slidably connected to the outer side of the inner screw hole cylinder (63), and a blocking rod (66) is fixedly connected to the right side of the inner screw hole block (65); The left side of the side seat plate (64) is fixedly connected to the right side of the cylinder shell (46).

2. The underground rock drilling device according to claim 1, characterized in that: The height control device (2) comprises a fixed frame plate (21), a first servo motor (22) is fixedly connected to the top end of the fixed frame plate (21), an axial hole is opened on the inner side of the fixed frame plate (21), a first threaded rod (23) is rotatably connected to the inner side of the axial hole of the fixed frame plate (21), the top end of the first threaded rod (23) is fixedly connected to the end of the main shaft of the first servo motor (22), a guide rod (24) is fixedly connected to the right end of the fixed frame plate (21), and the left side of the fixed frame plate (21) is fixedly connected to the right side of the moving device (1).

3. The underground rock drilling device according to claim 2, characterized in that: The outer side of the first threaded rod (23) is spirally connected to a threaded hole provided on the inner side of the passive plate (25); a sliding hole is provided on the inner side of the passive plate (25); the sliding hole of the passive plate (25) is slidably connected to the outer side of the guide rod (24); and a reinforcing plate (26) is fixedly connected to the right side of the passive plate (25).

4. The underground rock drilling device according to claim 1, characterized in that: The driving assembly (3) comprises a fixed frame (31), the right side of the fixed frame (31) is fixedly connected to an extension plate (32), one side of the fixed frame (31) is fixedly connected to a support plate (33) and a flange (34), the left side of the fixed frame (31) is fixedly connected to the right side of the reinforcing plate (26), the right side of the support plate (33) is fixedly connected to the extension plate (32), the flange (34) is fixedly connected to the collar plate (41) via fixing bolts (42), the top end of the support plate (33) is fixedly connected to the bottom end of a housing of a driving motor (35), a through hole is provided on the inner side of the support plate (33), the main shaft of the driving motor (35) extends out of the inside of the through hole of the support plate (33), the main shaft of the driving motor (35) is rotatably connected to the inner side of the hollow groove (44), and the bottom end of the fixed frame (31) is fixedly connected to the top end of the telescopic rod (48).

5. The underground rock drilling device according to claim 4, characterized in that: The top end of the extension plate (32) is fixedly connected to the bottom end of the housing of the second servo motor (61), and two through holes are provided on the inner side of the extension plate (32). The through hole at the left end of the extension plate (32) is rotatably connected to the outer side of the second threaded rod (62), and the through hole at the right end of the extension plate (32) is slidably connected to the outer side of the blocking rod (66).

6. The underground rock and soil drilling device according to claim 1, characterized in that: The power transmission assembly (5) comprises a limit shell (51), the inner side of which is fixedly connected to a second guide track (55), the inner side of which is fixedly connected to a first reinforcement bar (52), the outer side of which slides on the inner side of the first guide track (54), the first guide track (54) is arranged on the inner side of a movable column (53), the front end and the rear end of the movable column (53) are both fixedly connected to a second reinforcement bar (56), the second reinforcement bar (56) is slidably connected to the inner side of the second guide track (55), the top end of the limit shell (51) is fixedly connected to the end of the main shaft of the driving motor (35), and the bottom end of the movable column (53) is fixedly connected to the top end of the drill rod (47).

7. The underground rock drilling device according to claim 1, characterized in that: The bottom end of the inner screw hole tube (63) is fixedly connected to a limiting plate, a sliding hole is provided on the inner side of the side seat plate (64), the outer side of the inner screw hole tube (63) is slidably connected to the inner side of the sliding hole of the side seat plate (64), and a spacing is provided between the bottom end of the inner screw hole block (65) and the inner screw hole tube (63).

Images