A drilling device for roadway blasting

Abstract

The application discloses a drilling device for roadway blasting and relates to the technical field of ore mining equipment, which comprises a base, four folding parts arranged at four corners of the base, a top rod capable of moving outward and arranged at the end of each folding part, a horizontal moving table, a lifting assembly arranged above the horizontal moving table, a C-shaped frame fixedly installed on the telescopic end of the lifting assembly, a rotating drum rotatably installed in the C-shaped frame, a guide table installed on the rotating drum through a scissor-type telescopic frame and a sliding table slidably installed on the guide table and fixedly provided with a drilling motor. The horizontal moving table, the lifting assembly, the C-shaped frame, the rotating drum, the scissor-type telescopic frame and the guide table are arranged, so that the drill bit can quickly and accurately reach any designed hole position on various hole distribution surfaces such as a fan-shaped surface and a rectangular surface, and the positioning precision and range are far superior to those of manual holding or simple support, thereby solving the problems that the existing technology is difficult to have both mobility and stability, manual operation is heavy and the precision is low.

Description

Technical Field

[0001] This invention relates to the field of ore mining equipment technology, specifically a drilling device for tunnel blasting. Background Technology

[0002] In underground iron ore mining, tunnel excavation is the primary step. Currently, the drilling and blasting method is mainly used, which involves arranging blast holes according to the design at the tunneling face and then blasting with explosives.

[0003] In this process, the efficiency and precision of drilling operations are crucial. To improve mechanization, various drilling devices have emerged in the existing technology. For example, Chinese Patent No. CN215632743U discloses a drilling device for tunnel blasting, which uses a drilling rig pushing mechanism, adjusting guide rails, positioning blocks, and other structures to advance and position the drill rod, making it suitable for tunnel projects with large cross-sections. Such devices typically rely on rock drilling rigs or large propulsion platforms. Although they can ensure a certain level of drilling accuracy and drilling force, their overall structure is bulky and inconvenient to move and turn, making it difficult to flexibly enter and position in small-to-medium cross-section roadways or complex mining roadways.

[0004] While lightweight small drilling rigs or handheld rock drilling equipment can adapt to confined spaces, they have significant drawbacks: First, they rely entirely on manual positioning and propulsion, resulting in extremely high labor intensity and low work efficiency for workers; second, it is difficult to ensure consistency in drilling angle and depth, affecting blasting results; and third, the lack of stable support and safety protection during operation poses certain safety risks.

[0005] Therefore, how to achieve flexible movement, rapid positioning and stable operation of drilling equipment in a limited space, while reducing the labor intensity of operators, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a drilling device for tunnel blasting, thereby solving the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a drilling device for tunnel blasting, comprising:

[0008] The base has four folding parts at its four corners. Each folding part has a sliding top rod that can move outward. A pair of reinforcing rods are fixedly installed on both sides of the base. Four lifting rods are threadedly connected inside the pair of reinforcing rods. The bottom of each of the four lifting rods is rotatably connected to a support foot. Four wheels are installed inside the pair of reinforcing rods.

[0009] A transverse platform is slidably mounted on the base, a transverse drive assembly is provided between the transverse platform and the base, and a lifting assembly is provided above it;

[0010] The C-frame is fixedly installed on the telescopic end of the lifting assembly, and its height is adjusted by the lifting assembly.

[0011] A rotating drum is rotatably mounted inside the C-shaped frame, and an angle adjustment assembly is provided between the C-shaped frame and the rotating drum;

[0012] The guide platform is mounted on the rotating drum via a scissor lift frame. The scissor lift frame ensures that the rotating drum and the guide platform are parallel to each other, and the deformation of the scissor lift frame changes the distance between the two.

[0013] A slide table is slidably mounted on the guide platform. A drilling motor is fixedly mounted on the slide table. A drill rod is connected to the power output end of the drilling motor. A drill bit is fixedly mounted at one end of the drill rod.

[0014] The traverse table moves on the base, the lifting assembly adjusts the height of the C-frame, the rotary drum rotates, and the scissor lift adjusts the extension and retraction of the guide table, allowing the drill bit to reach any designed hole position on the fan-shaped or rectangular hole-laying surface.

[0015] Preferably, one side of the folded portion is hinged to the outer edge of the base by a hinge, and the other side of the folded portion is detachably connected to the inner edge of the base using a positioning pin.

[0016] Preferably, a slide rod is slidably disposed inside the folding part, the top rod is threadedly connected to one end of the slide rod, and a lever is fixedly disposed on the outside of the top rod.

[0017] Preferably, a connecting rod 1 is fixedly connected to the other end of the slide rod, and a connecting rod 2 is slidably arranged inside the base and near the four folding parts. When the connecting rod 2 moves outward, it can push the connecting rod 1 to move outward. A cylinder is fixedly arranged inside the base, and a connecting rod 3 is hinged to the telescopic end of the cylinder. The connecting rod 3 is hinged to the connecting rod 2. There are two cylinders. One cylinder is connected to a pair of connecting rods 2 on the front side through a pair of connecting rods 3, and the other cylinder is connected to a pair of connecting rods 2 on the rear side through a pair of connecting rods 3. A return spring is provided on the outside of the connecting rod 1 for pushing the slide rod to move inward into the folding part.

[0018] Preferably, a pair of C-shaped guide rails with inwardly facing notches are fixedly provided on the base and the folding part. Multiple longitudinal limiting wheels are rotatably connected to the outer sides of both ends of the transverse platform. Lateral limiting wheels are also rotatably connected to both sides of the multiple longitudinal limiting wheels. The multiple longitudinal limiting wheels and the lateral limiting wheels roll in the notches of the C-shaped guide rails. A rack is fixedly provided above the C-shaped guide rails. A transverse motor is fixedly provided on the transverse platform. A gear capable of meshing with the rack is fixedly connected to the power output end of the transverse motor.

[0019] Preferably, a pair of multi-stage guide rods are fixedly installed on the transverse moving platform, the C-shaped frame is fixed on the telescopic ends of the pair of multi-stage guide rods, and a multi-stage electric push rod is fixedly installed on the transverse moving platform, with the telescopic ends of the multi-stage electric push rods fixedly connected to the bottom of the C-shaped frame.

[0020] Preferably, the two ends of the rotating drum are rotatably connected to the C-shaped frame via shafts. A worm gear is fixedly installed on the shaft at one end of the rotating drum, and an adjusting motor is fixedly installed on the C-shaped frame. A worm that can mesh with the worm gear is fixedly installed on the power output end of the adjusting motor.

[0021] Preferably, a sliding sleeve is slidably connected to the outer side of the rotating drum, and the two ends of the bottom of the scissor lift frame are respectively hinged to the sliding sleeve and the rotating drum. A slider is slidably connected to the bottom of the guide platform, and the two ends of the top of the scissor lift frame are respectively hinged to the slider and the bottom of the guide platform. An opening is provided on the side wall of the rotating drum, and a positioning block that can be inserted into the opening is fixedly provided inside the sliding sleeve. A lead screw is rotatably provided inside the rotating drum, and the positioning block is threadedly connected to the lead screw. An adjusting motor is fixedly provided on the outer side of the rotating drum, and the power output end of the adjusting motor is fixedly connected to the lead screw.

[0022] Preferably, a second lead screw is rotatably connected to the guide platform, the slide is threadedly connected to the second lead screw, and an adjustment motor is fixedly installed at one end of the guide platform to drive the second lead screw to rotate.

[0023] Preferably, a limiting plate is fixedly provided at one end of the guide platform, and a limiting hole is provided in the limiting plate. The drill rod is placed in the limiting hole and can move and rotate along its length.

[0024] This invention provides a drilling device for tunnel blasting, which has the following advantages: The base of the device has folding sections at its four corners. When moving in narrow tunnels, these folding sections can be folded up, reducing the overall width of the device and facilitating passage. When drilling is required, the folding sections can be unfolded, increasing the lateral span and providing more stable and reliable support for the equipment. The base is equipped with independently adjustable feet, making it easy to level the device on uneven ground. The device can be easily moved by the wheels, effectively solving the industry problems of difficulty in achieving both mobility and stability, and the heavy and low-precision manual operation in existing technologies. Through the horizontal movement of the transverse platform on the base, the vertical adjustment of the C-frame height by the lifting assembly, the stepless angle rotation of the worm gear-driven drum, and the radial extension and retraction of the guide platform adjusted by the scissor lift, the drill bit can quickly and accurately reach any designed hole position on various hole layout surfaces such as fan-shaped and rectangular shapes. The positioning accuracy and range are far superior to manual holding or simple supports. Attached Figure Description

[0025] Figure 1 The three-dimensional representation of the present invention Figure 1 ;

[0026] Figure 2 The three-dimensional representation of the present invention Figure 2 ;

[0027] Figure 3 for Figure 2 A magnified view of part A in the image;

[0028] Figure 4 This is a 3D view of the base;

[0029] Figure 5 This is a schematic diagram of the internal structure of the base;

[0030] Figure 6 A 3D view of the transverse moving platform and the C-frame;

[0031] Figure 7 This is a schematic diagram of the internal structure of the rotating drum;

[0032] Figure 8 This is a schematic diagram showing the state of drilling a fan-shaped surface in a tunnel according to the present invention;

[0033] Figure 9 This is a schematic diagram showing the state of drilling a rectangular surface in a tunnel according to the present invention.

[0034] In the diagram: 1. Base; 2. Transverse platform; 3. C-frame; 4. Rotary drum; 5. Scissor lift frame; 6. Guide table; 7. Slide table; 8. Drilling motor; 9. Drill rod; 10. Drill bit; 11. Folding section; 12. Slide rod; 13. Top rod; 14. Lever; 15. Reinforcing rod; 16. Lifting rod; 17. Support leg; 18. Insertion hole; 19. Wheel; 20. C-shaped guide rail; 21. Rack; 22. Longitudinal limit wheel; 23. Lateral limit wheel; 24. Transverse motor 25. Gear; 26. Connecting rod one; 27. Return spring; 28. Connecting rod two; 29. ​​Cylinder; 30. Connecting rod three; 31. Hinge; 32. Positioning pin; 33. Worm gear; 34. Adjusting motor one; 35. Worm; 36. Sliding sleeve; 37. Opening; 38. Positioning block; 39. Lead screw one; 40. Adjusting motor two; 41. Slider; 42. Limiting plate; 43. Lead screw two; 44. Adjusting motor three; 45. Multi-stage guide rod; 46. Multi-stage electric push rod. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0036] Please see Figures 1-8 The present invention provides a technical solution: a drilling device for tunnel blasting, comprising:

[0037] The base 1 has four folding parts 11 at its four corners. Each folding part 11 has a sliding top rod 13 at its end that can move outward. The top rod 13 can move outward to abut against the side walls of the tunnel to fix the base 1. A pair of reinforcing rods 15 are fixedly installed on both sides of the base 1. Four lifting rods 16 are threadedly connected inside the pair of reinforcing rods 15. The bottom of each of the four lifting rods 16 is rotatably connected to a support foot 17. The top of each of the four lifting rods 16 has a hole 18 for inserting a wrench to rotate the lifting rod 16. The height of the lifting rods 16 can be adjusted by rotating them. By adjusting the height of the four lifting rods 16, the base 1 can be adjusted to a level state on uneven ground. Four wheels 19 are installed inside the pair of reinforcing rods 15 to facilitate the overall movement of the device.

[0038] A transverse platform 2 is slidably mounted on a base 1. A transverse drive assembly is provided between the transverse platform 2 and the base 1. The transverse drive assembly can control the movement of the transverse platform 2 on the base 1. A lifting assembly is provided above the transverse platform 2.

[0039] C-frame 3 is fixedly installed on the telescopic end of the lifting assembly, and its height is adjusted by the lifting assembly;

[0040] Rotary drum 4 is rotatably installed inside C-shaped frame 3. An angle adjustment component is provided between C-shaped frame 3 and rotary drum 4 to control the rotation angle of rotary drum 4.

[0041] The guide platform 6 is installed on the rotating drum 4 via the scissor lift telescopic frame 5. The scissor lift telescopic frame 5 ensures that the rotating drum 4 and the guide platform 6 are parallel to each other, and the scissor lift telescopic frame 5 deforms to change the distance between the two.

[0042] The slide table 7 is slidably mounted on the guide table 6. A drilling motor 8 is fixedly mounted on the slide table 7. The power output end of the drilling motor 8 is connected to the drill rod 9. A drill bit 10 is fixedly mounted on one end of the drill rod 9. The drill bit 10 is controlled to move forward by moving the slide table 7, and the drill bit 10 is driven to rotate by the drilling motor 8.

[0043] As an embodiment of the present invention, please refer to Figure 3 One side of the folding part 11 is hinged to the outer edge of the base 1 via a hinge 31, and the other side of the folding part 11 is detached and connected to the inner edge of the base 1 using a positioning pin 32. By rotating the folding part 11 180 degrees along the hinge 31, it can be brought close to the base 1, reducing the overall width of the base 1 and facilitating movement in the tunnel. The folding part 11 can be fixed to the base 1 by the positioning pin 32.

[0044] As an embodiment of the present invention, please refer to Figure 4 , 5 A slide rod 12 is slidably disposed inside the folding part 11. A top rod 13 is threadedly connected to one end of the slide rod 12. A lever 14 is fixedly disposed on the outside of the top rod 13. By levering the lever 14, the top rod 13 is rotated. Since the top rod 13 is threadedly connected to the slide rod 12, the top rod 13 can be driven to move axially. By adjusting the extension length of the four top rods 13 respectively, the device can be kept in the center of the roadway when it abuts against the uneven inner wall of the roadway, and the drill rod 9 of the device can be adjusted to be perpendicular to the working face.

[0045] As an embodiment of the present invention, please refer to Figure 5The other end of the slide rod 12 is fixedly connected to a connecting rod 26. Connecting rods 28 are slidably arranged inside the base 1 and near the four folding parts 11. When connecting rods 28 move outward, they can push connecting rods 26 outward. A cylinder 29 is fixedly arranged inside the base 1. The telescopic end of the cylinder 29 is hinged to a connecting rod 30. Connecting rod 30 is hinged to connecting rods 28. There are two cylinders 29. One cylinder 29 is connected to a pair of connecting rods 28 on the front side via a pair of connecting rods 30, and the other cylinder 29 is connected to a pair of connecting rods 28 on the front side via a pair of connecting rods 30. Connecting to the rear pair of connecting rods 28, after starting the cylinder 29, the connecting rods 28 can be pushed outward. The connecting rod 26 moves outward simultaneously under the push of the connecting rods 28, thereby causing the top rods 13 on both sides to press against the side walls of the tunnel, thus fixing the base 1 in the tunnel. A return spring 27 is provided on the outside of the connecting rod 26 to push the slide rod 12 into the folding part 11. When the connecting rod 26 is not pushed by the connecting rods 28, the slide rod 12 is retracted into the folding part 11 by the push generated by the return spring 27.

[0046] As an embodiment of the present invention, please refer to Figure 1 , 4 6. A pair of C-shaped guide rails 20 with inward recesses are fixedly installed on the base 1 and the folding part 11. Multiple longitudinal limiting wheels 22 are rotatably connected to the outer sides of both ends of the transverse platform 2. Lateral limiting wheels 23 are also rotatably connected to both sides of the multiple longitudinal limiting wheels 22. The multiple longitudinal limiting wheels 22 and the lateral limiting wheels 23 roll in the recesses of the C-shaped guide rails 20 to limit the transverse platform 2 and ensure that the transverse platform 2 can move along the length direction of the C-shaped guide rails 20. A rack 21 is fixedly installed on the top of the C-shaped guide rails 20. A transverse motor 24 is fixedly installed on the transverse platform 2. The transverse motor 24 is a motor with a braking function. A gear 25 that can mesh with the rack 21 is fixedly connected to the power output end of the transverse motor 24. The position of the transverse platform 2 on the base 1 is controlled by the transverse motor 24.

[0047] As an embodiment of the present invention, please refer to Figure 1 A pair of multi-stage guide rods 45 are fixedly installed on the transverse platform 2. The C-shaped frame 3 is fixed on the telescopic end of the pair of multi-stage guide rods 45. The multi-stage guide rods 45 restrict the movement of the C-shaped frame 3 in the height direction. A multi-stage electric push rod 46 is fixedly installed on the transverse platform 2. The telescopic end of the multi-stage electric push rod 46 is fixedly connected to the bottom of the C-shaped frame 3. The height of the C-shaped frame 3 is controlled by the multi-stage electric push rod 46.

[0048] As an embodiment of the present invention, please refer to Figure 1 , 67. The two ends of the rotating drum 4 are rotatably connected to the C-shaped frame 3 via shafts. A worm gear 33 is fixedly installed on the shaft at one end of the rotating drum 4. An adjusting motor 34 is fixedly installed on the C-shaped frame 3. A worm 35 that can mesh with the worm gear 33 is fixedly installed on the power output end of the adjusting motor 34. The adjusting motor 34 can drive the worm gear 33 to rotate, thereby driving the rotating drum 4 to rotate, so that the drill bit 10 can rotate around the rotating drum 4. The worm gear 33 and the worm 35 adopt a worm gear transmission mechanism with a self-locking function, which is convenient for fixing the rotating drum 4 after the position is adjusted.

[0049] As an embodiment of the present invention, please refer to Figure 1 , 7 A sliding sleeve 36 is slidably connected to the outer side of the rotating drum 4. The two ends of the bottom of the scissor lift frame 5 are respectively hinged to the sliding sleeve 36 and the rotating drum 4. A slider 41 is slidably connected to the bottom of the guide platform 6. The two ends of the top of the scissor lift frame 5 are respectively hinged to the slider 41 and the bottom of the guide platform 6. An opening 37 is opened on the side wall of the rotating drum 4. A positioning block 38 that can be inserted into the opening 37 is fixedly installed inside the sliding sleeve 36. A lead screw 39 is rotatably installed inside the rotating drum 4. The positioning block 38 is threadedly connected to the lead screw 39. An adjusting motor 40 is fixedly installed on the outer side of the rotating drum 4. The power output end of the adjusting motor 40 is fixedly connected to the lead screw 39. The adjusting motor 40 can drive the lead screw 39 to rotate. The rotation of the lead screw 39 can drive the sliding sleeve 36 to move on the rotating drum 4, thereby changing the deformation of the scissor lift frame 5 and realizing the adjustment of the distance between the guide platform 6 and the rotating drum 4.

[0050] As an embodiment of the present invention, please refer to Figure 1 , 2 A second lead screw 43 is rotatably connected to the guide table 6. The slide table 7 is threadedly connected to the second lead screw 43. An adjustment motor 3 44 for driving the second lead screw 43 to rotate is fixedly installed at one end of the guide table 6. By adjusting the motor 3 44, the second lead screw 43 can be driven to rotate, thereby enabling the slide table 7 to move along the length of the guide table 6, thus realizing the forward and backward movement of the drill bit 10.

[0051] As an embodiment of the present invention, please refer to Figure 1 , 2 A limiting plate 42 is fixedly installed at one end of the guide table 6. A limiting hole is opened in the limiting plate 42. The drill rod 9 is placed in the limiting hole and can move and rotate along its length direction to limit the drill rod 9 at the end away from the drilling motor 8 and improve the drilling accuracy.

[0052] The working principle and usage process of this invention are as follows: First, move the device to the front of the working face in the tunnel. Use a wrench inserted into the socket 18 to rotate the lifting rod 16. Adjust the support leg 17 below the wheel 19, so that the wheel 19 is off the ground. The support leg 17 supports the base 1. Simultaneously, adjust the height of each of the four lifting rods 16 to level the base 1. Open the folding part 11 (see [link]). Figure 4 , 5 (8) After inserting the positioning pin 32, the folding part 11 can be fixed to the base 1. At this time, the connecting rod 1 26 and the connecting rod 28 can abut against each other. By turning the lever 14, the four push rods 13 are rotated respectively, so that the push rods 13 initially abut against the side walls of the tunnel. Then, the cylinder 29 is activated to push the push rods 13 further outward and tightly against the side walls of the tunnel, thereby firmly fixing the base 1 in the tunnel. The working surface of the tunnel includes a fan-shaped surface and a rectangular surface. When drilling holes in the fan-shaped surface (see...), Figure 8 First, activate the multi-stage electric push rod 46 to align the centerline of the rotating drum 4 with the center of the sector surface. Adjusting motor 2 40 adjusts the distance between the guide table 6 and the rotating drum 4. Adjusting motor 1 34 rotates the rotating drum 4, allowing the drill bit 10 to move circumferentially around the rotating drum 4. By coordinating motor 1 34 and motor 2 40, the drill bit 10 can be aligned with any position on the sector surface. Activating drilling motor 8 rotates the drill bit 10. Activating adjusting motor 3 44 moves the drill bit 10 forward or backward, thus drilling the working face. When drilling a rectangular surface (see [reference needed]). Figure 9 First, drill holes on one side of the rectangular surface. Start the transverse motor 24 to move the transverse stage 2 to one side of the base 1. Adjust the motor 34 to rotate the guide stage 6 to one side of the rotating drum 4. Then, use the transverse motor 24 in conjunction with the adjustment motor 34 to move the drill bit 10 to the first drilling position. The height of the rotating drum 4 can be adjusted by the multi-stage electric push rod 46, which allows the drill bit 10 to move vertically and drill holes at multiple blasting points in the vertical direction. The transverse stage 2 can be moved horizontally to drill holes at multiple blasting points in the horizontal direction. After drilling one side of the rectangular surface is completed, first, control the scissor lift telescopic frame 5 to retract by adjusting the motor 40. Start the transverse motor 24 to move the transverse stage 2 to the other side of the base 1. Adjust the motor 34 to rotate the guide stage 6 to the other side of the rotating drum 4. Repeat the above operations to drill holes on the other side of the rectangular surface. After drilling is complete, retract the scissor lift frame 5, move the C-frame 3 to its lowest point, move the transverse platform 2 to the center of the base 1, retract the control cylinder 29, and with the push of the return spring 27, the sliding rod 12 can retract into the folding part 11, and the top rod 13 is screwed into the sliding rod 12. Pull out the positioning pin 32 and rotate the folding part 11 180 degrees (see [reference]). Figure 2At this point, the device is retracted to its minimum size. Use a wrench to rotate the lifting rod 16 to lower the base 1 and make the wheels 19 contact the ground. The device can then be moved in the tunnel by manpower or with the help of a trailer.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling device for tunnel blasting, characterized in that, include: The base (1) has four folding parts (11) at its four corners. Each folding part (11) has a sliding top rod (13) that can move outward at its end. A pair of reinforcing rods (15) are fixedly provided on both sides of the base (1). Four lifting rods (16) are connected to the pair of reinforcing rods (15) by threads. The bottom of each of the four lifting rods (16) is rotatably connected to a support foot (17). Four wheels (19) are installed on the inner side of the pair of reinforcing rods (15). A transverse platform (2) is slidably mounted on the base (1). A transverse drive assembly is provided between the transverse platform (2) and the base (1), and a lifting assembly is provided above it. C-frame (3) is fixedly installed on the telescopic end of the lifting assembly, and its height is adjusted by the lifting assembly; Rotary drum (4) is rotatably installed inside the C-shaped frame (3), and an angle adjustment component is provided between the C-shaped frame (3) and the rotary drum (4); The guide platform (6) is installed on the rotating drum (4) by means of the scissor telescopic frame (5). The scissor telescopic frame (5) ensures that the rotating drum (4) and the guide platform (6) are parallel to each other, and the distance between them is changed by the deformation of the scissor telescopic frame (5). A slide (7) is slidably mounted on the guide table (6). A drilling motor (8) is fixedly mounted on the slide (7). A drill rod (9) is connected to the power output end of the drilling motor (8). A drill bit (10) is fixedly mounted on one end of the drill rod (9). The transverse table (2) moves on the base (1), the lifting component adjusts the height of the C-frame (3), the rotating drum (4) rotates, the scissor telescopic frame (5) adjusts the guide table (6) to extend and retract, so that the drill bit (10) can reach any designed hole position on the fan-shaped or rectangular hole surface; One side of the folding part (11) is hinged to the outer edge of the base (1) by a hinge (31), and the other side of the folding part (11) is detachably connected to the inner edge of the base (1) by a positioning pin (32). A slide rod (12) is slidably disposed inside the folding part (11), and a top rod (13) is threadedly connected to one end of the slide rod (12). A lever (14) is fixedly disposed on the outside of the top rod (13). The other end of the slide rod (12) is fixedly connected to a connecting rod (26). A connecting rod (28) is slidably arranged inside the base (1) and near the four folding parts (11). When the connecting rod (28) moves outward, it can push the connecting rod (26) to move outward. A cylinder (29) is fixedly arranged inside the base (1). The telescopic end of the cylinder (29) is hinged to a connecting rod (30). The connecting rod (30) is hinged to the connecting rod (28). There are two cylinders (29). One cylinder (29) is connected to a pair of connecting rods (28) on the front side through a pair of connecting rods (30). The other cylinder (29) is connected to a pair of connecting rods (28) on the rear side through a pair of connecting rods (30). A return spring (27) is provided on the outside of the connecting rod (26) for pushing the slide rod (12) to move into the folding part (11).

2. The drilling device for tunnel blasting according to claim 1, characterized in that, A pair of C-shaped guide rails (20) with inward recesses are fixedly provided on the base (1) and the folding part (11). Multiple longitudinal limiting wheels (22) are rotatably connected to the outer sides of both ends of the transverse platform (2). Lateral limiting wheels (23) are also rotatably connected to both sides of the multiple longitudinal limiting wheels (22). The multiple longitudinal limiting wheels (22) and the lateral limiting wheels (23) roll in the recess of the C-shaped guide rails (20). A rack (21) is fixedly provided above the C-shaped guide rails (20). A transverse motor (24) is fixedly provided on the transverse platform (2). A gear (25) that can mesh with the rack (21) is fixedly connected to the power output end of the transverse motor (24).

3. The drilling device for tunnel blasting according to claim 1, characterized in that, A pair of multi-stage guide rods (45) are fixedly installed on the transverse platform (2). The C-shaped frame (3) is fixed on the telescopic ends of the pair of multi-stage guide rods (45). A multi-stage electric push rod (46) is fixedly installed on the transverse platform (2). The telescopic ends of the multi-stage electric push rod (46) are fixedly connected to the bottom of the C-shaped frame (3).

4. The drilling device for tunnel blasting according to claim 1, characterized in that, The two ends of the rotating drum (4) are rotatably connected to the C-shaped frame (3) through shafts. A worm gear (33) is fixedly installed on the shaft at one end of the rotating drum (4). An adjusting motor (34) is fixedly installed on the C-shaped frame (3). A worm (35) that can mesh with the worm gear (33) is fixedly installed on the power output end of the adjusting motor (34).

5. A drilling device for tunnel blasting according to claim 1, characterized in that, A sliding sleeve (36) is slidably connected to the outside of the rotating drum (4). The two ends of the bottom of the scissor lift frame (5) are respectively hinged to the sliding sleeve (36) and the rotating drum (4). A slider (41) is slidably connected to the bottom of the guide platform (6). The two ends of the top of the scissor lift frame (5) are respectively hinged to the slider (41) and the bottom of the guide platform (6). An opening (37) is provided on the side wall of the rotating drum (4). A positioning block (38) that can be inserted into the opening (37) is fixedly provided inside the sliding sleeve (36). A lead screw (39) is rotatably provided inside the rotating drum (4). The positioning block (38) is threadedly connected to the lead screw (39). An adjusting motor (40) is fixedly provided on the outside of the rotating drum (4). The power output end of the adjusting motor (40) is fixedly connected to the lead screw (39).

6. The drilling device for tunnel blasting according to claim 1, characterized in that, A second lead screw (43) is rotatably connected to the guide table (6), and the slide table (7) is threadedly connected to the second lead screw (43). An adjustment motor (44) for driving the second lead screw (43) to rotate is fixedly installed at one end of the guide table (6).

7. A drilling device for tunnel blasting according to claim 1, characterized in that, One end of the guide plate (6) is fixedly provided with a limiting plate (42), and a limiting hole is opened in the limiting plate (42). The drill rod (9) is placed in the limiting hole and can move and rotate along its length.

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