A blasting drilling device for tunnel blasting construction

Abstract

This invention belongs to the technical field of drilling equipment, and particularly relates to a blasting drilling device for tunnel blasting construction. It includes: a vehicle body, on which are mounted an angle adjustment mechanism, a bag filter dust collection mechanism, a control mechanism, and a seat. The movable end of the angle adjustment mechanism is connected to an electric slide and a drilling mechanism. Each mechanism is connected to the control mechanism, and the drilling mechanism is connected to the bag filter dust collection mechanism. The drilling mechanism includes a drill cylinder, which is equipped with a drive unit, a fixed drill bit at the front end, and a tail end connected to the bag filter dust collection mechanism via a connecting part. Inside the drill cylinder, from the drill bit to the connecting part, are sequentially arranged a crushing part, a grinding part, and a dust collection part. This invention employs dry dust removal, eliminating the need for a water source. The angle adjustment mechanism enables multi-angle drilling, electromagnetic drive ensures drilling stability, and the coordinated operation of each mechanism improves the device's applicability and drilling efficiency, reduces dust pollution, and meets the drilling requirements for tunnel blasting construction.

Description

Technical Field

[0001] This invention belongs to the field of drilling equipment technology, and particularly relates to a blasting drilling device for tunnel blasting construction. Background Technology

[0002] Tunnel blasting is a common technique used in tunnel construction to excavate tunnels. Before blasting, blast holes need to be drilled on the blasting surface, then explosives are loaded into the blast holes, and finally, the detonator is connected before the blasting operation can begin.

[0003] Tunnel blasting drilling equipment generates a large amount of dust during drilling. Traditional tunnel blasting drilling equipment uses water jets to remove dust, but this requires the water source to be stored or connected in advance, making the method too limited and not conducive to the normal use of the tunnel blasting drilling equipment. In addition, traditional tunnel blasting drilling equipment cannot adjust the drilling inclination angle, making it difficult to drill at different angles and locations of the blasting face, which greatly reduces the efficiency of the tunnel blasting drilling equipment.

[0004] Therefore, there is an urgent need for a blasting drilling device for tunnel blasting construction. Summary of the Invention

[0005] The purpose of this invention is to provide a blasting drilling device for tunnel blasting construction to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following solution: A blasting drilling device for tunnel blasting construction includes: The vehicle body and the angle adjustment mechanism, bag dust collection mechanism, control mechanism and seat connected to the vehicle body; And, a drilling mechanism and an electric slide connected to the movable end of the angle adjustment mechanism; The fixed end of the angle adjustment mechanism is connected to the vehicle body, the movable end of the angle adjustment mechanism is connected to the fixed end of the electric slide, the movable end of the electric slide is connected to the fixed end of the drilling mechanism, and the angle adjustment mechanism, the electric slide, the drilling mechanism and the bag dust collection mechanism are all connected to the control mechanism. The drilling mechanism is connected to the bag dust collection mechanism; The drilling mechanism includes a drill cylinder, which is driven by a drive unit. The drive unit is connected to the movable end of the electric slide table. A drill bit is coaxially fixed at the front end of the drill cylinder, and the tail end of the drill cylinder is connected to the bag dust collection mechanism through a connecting part. A crushing section, a grinding section, and a dust collection section are sequentially arranged along the direction from the drill bit to the connecting part.

[0007] Optionally, the shredding section includes shredding blades fixed inside the drill barrel.

[0008] Optionally, the grinding section includes a frustum-shaped grinding column, which is fixedly disposed, and the gap between the frustum-shaped grinding column and the inner wall of the drill barrel serves as a grinding cavity, the gap decreasing sequentially from the front end to the tail end.

[0009] Optionally, the outer wall of the frustoconical grinding column is provided with grinding patterns.

[0010] Optionally, the inner wall of the drill barrel is provided with a spiral pattern.

[0011] Optionally, the connecting part includes a connecting base, which is fixed to the fixed end of the driving part, and one end of the connecting base is rotatably engaged with the tail end of the drill barrel, and the other end of the connecting base is rotatably engaged with a duct connector, which is connected to the bag dust collection mechanism. The frustoconical grinding column is fixed in the connecting base by a mounting plate, and multiple ventilation openings are opened around the mounting plate. The powder hopper formed between the tail end of the drill barrel and the mounting plate serves as a dust collection part. The powder hopper is connected to the grinding chamber, and multiple air inlets connected to the powder hopper are opened on the side wall of the connecting base.

[0012] Optionally, the drive unit includes a drill bit base, which is fixed to the movable end of the angle adjustment mechanism. The drill bit base is rotatably coupled with the drill barrel. Multiple electromagnets are evenly spaced along the inner circumference of the drill bit base, and adjacent electromagnets have opposite polarities. The multiple electromagnets are magnetically coupled with a matching number of permanent magnets, and adjacent permanent magnets have opposite polarities. The permanent magnets are embedded in the drill barrel.

[0013] Optionally, the inner wall of the drill bit base is provided with at least two annular protrusions, the annular protrusions are coaxially arranged with the drill barrel, and annular grooves are opened on the drill barrel in a number that matches and corresponds one-to-one with the annular protrusions, the annular grooves slidingly engaging with the annular protrusions.

[0014] Optionally, the drill bit base and the connecting base are fixed together by a plurality of circumferentially spaced connecting columns.

[0015] Optionally, the angle adjustment mechanism includes a base plate fixed to the vehicle body and a tilt plate fixed to the fixed end of the electric slide. It also includes a first lifting rod, the bottom of which is fixed to the center of the base plate, and the top of which is spherically hinged to the center of the bottom of the tilting plate. The top ends of the second lifting rods are spherically hinged to the four corners of the bottom of the elevation plate, and the bottom ends of the second lifting rods are spherically hinged to the bottom plate.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects: This invention abandons the traditional water-based dust removal method and designs a dry dust removal system that connects the drilling mechanism and the bag filter dust collection mechanism. The drilling mechanism is equipped with a crushing section, a grinding section, and a dust collection section. The rock cuttings generated during drilling are graded, first crushed into particles by a crushing blade, then ground into fine powder by a grinding chamber, and finally collected by the bag filter dust collection mechanism. This eliminates the need for an external water source, effectively solving the water source limitation problem of water-based dust removal and expanding the applicability of the device in the complex environment of tunnel construction. By designing an angle adjustment mechanism consisting of a central first lifting rod and four corner second lifting rods with spherical hinges, the elevation angle of the drilling mechanism can be flexibly adjusted, enabling precise drilling at different positions and angles of blasting surfaces without moving the entire device, simplifying the operation process and improving the efficiency and flexibility of drilling operations. The drive method using the magnetic force of an electromagnet and a permanent magnet to rotate the drill barrel, combined with the sliding fit structure of annular protrusions and annular grooves, ensures the coaxiality and stability of the drill barrel rotation, improving drilling accuracy. The electric slide table enables automatic axial feed of the drilling mechanism. Each actuator is centrally controlled by the control mechanism, reducing the labor intensity of manual operation and realizing automated control of drilling operations. At the same time, the dry dust removal structure greatly improves the dust collection effect, reduces dust pollution in the construction environment, and protects the health of construction personnel. The overall device structure is reasonably designed, and the various mechanisms work together to effectively solve the problems of the limitations of existing drilling devices and low operating efficiency, meeting the actual operational needs of tunnel blasting construction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described 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. Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the drilling mechanism structure of the present invention; Figure 3 This is a schematic diagram of the angle adjustment mechanism of the present invention; Figure 4 This is a schematic diagram of the shredder structure of the present invention; The components include: 1. Vehicle body; 2. Angle adjustment mechanism; 3. Drilling mechanism; 4. Bag dust collection mechanism; 5. Control mechanism; 6. Seat; 7. Electric slide; 201. Tilt / tilt plate; 202. First lifting rod; 203. Second lifting rod; 204. Base plate; 301. Drill bit base; 302. Electromagnet; 303. Annular protrusion; 304. Annular groove; 305. Permanent magnet; 306. Connecting column; 307. Connecting base; 308. Air inlet; 309. Frustum-shaped grinding column; 310. Mounting plate; 311. Air duct connector; 312. Powder hopper; 313. Grinding chamber; 314. Crushing blade; 315. Drill barrel; 316. Drill bit; 317. Ventilation opening. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figures 1 to 4 This invention discloses a blasting drilling device for tunnel blasting construction, comprising: The vehicle body 1 and the angle adjustment mechanism 2, the bag dust collection mechanism 4, the control mechanism 5, and the seat 6 connected to the vehicle body 1; And, drilling mechanism 3 and electric slide 7 connected to the movable end of angle adjustment mechanism 2; Among them, the fixed end of the angle adjustment mechanism 2 is connected to the vehicle body 1, the movable end of the angle adjustment mechanism 2 is connected to the fixed end of the electric slide table 7, the movable end of the electric slide table 7 is connected to the fixed end of the drilling mechanism 3, and the angle adjustment mechanism 2, the electric slide table 7, the drilling mechanism 3 and the bag dust collection mechanism 4 are all connected to the control mechanism 5. The drilling mechanism 3 is connected to the bag dust collection mechanism 4; The drilling mechanism 3 includes a drill cylinder 315, which is driven by a drive unit. The drive unit is connected to the movable end of the electric slide table 7. A drill bit 316 is coaxially fixed at the front end of the drill cylinder 315, and the tail end of the drill cylinder 315 is connected to the bag dust collection mechanism 4 through a connecting part. A crushing section, a grinding section, and a dust collection section are arranged sequentially along the direction from drill bit 316 to the connecting part.

[0021] The control mechanism 5 controls the angle adjustment mechanism 2 on the vehicle body 1 to adjust the angle. The electric slide table 7 drives the drilling mechanism 3 to feed. The drive unit drives the drill barrel 315 and the drill bit 316 to rotate and drill. The rock cuttings generated by drilling are processed in stages by the crushing part, grinding part and dust collection part in the drill barrel 315, and then collected by the bag dust collection mechanism 4. The various mechanisms work together to achieve multi-angle drilling and dry dust removal, thereby improving the applicability and operating efficiency of the device.

[0022] As an optional implementation, the crushing unit includes a crushing blade 314, which is fixed inside the drill barrel 315.

[0023] The crushing blade 314 inside the drill barrel 315 rotates with the drill barrel 315, directly crushing the drill cuttings entering the drill barrel 315 into fine particles, preparing for subsequent grinding, improving the efficiency of cuttings processing, and facilitating subsequent dust collection.

[0024] As an optional implementation, the grinding section includes a frustoconical grinding column 309, which is fixedly disposed. The gap between the frustoconical grinding column 309 and the inner wall of the drill barrel 315 serves as a grinding cavity 313, and the gap decreases sequentially from the front end to the tail end.

[0025] The fixed frustum-shaped grinding column 309 and the inner wall of the drill barrel 315 form a grinding chamber 313 with a gradually decreasing gap from the front end to the tail end. The crushed rock cuttings enter the grinding chamber 313 under the rotation of the drill barrel 315 and are gradually squeezed and ground into fine powder, which improves the fineness of the rock cuttings and enhances the dust removal effect.

[0026] As an optional implementation, the outer wall of the frustoconical grinding column 309 is provided with grinding patterns.

[0027] The grinding texture on the outer wall of the frustoconical grinding column 309 increases the contact friction area with rock chips, further improving the grinding effect and enabling the rock chips to be ground into fine powder more fully, which is convenient for collection and processing by the bag dust collection mechanism 4.

[0028] As an optional implementation, the inner wall of the drill barrel 315 is provided with a spiral pattern.

[0029] The spiral pattern on the inner wall of the drill barrel 315 rotates with the drill barrel 315, which can push the crushed rock chips to the grinding chamber 313, and at the same time drive the rock chips to be fully ground in the grinding chamber 313, avoiding the accumulation of rock chips and ensuring the continuity of rock chip processing.

[0030] As an optional implementation, the connecting part includes a connecting base 307, which is fixed to the fixed end of the driving part. One end of the connecting base 307 is rotatably engaged with the tail end of the drill barrel 315, and the other end of the connecting base 307 is rotatably engaged with a duct connector 311, which is connected to the bag dust collection mechanism 4. The frustum-shaped grinding column 309 is fixed in the connecting base 307 by the mounting plate 310, and multiple ventilation openings 317 are opened around the mounting plate 310. The powder chamber 312 formed between the tail end of the drill barrel 315 and the mounting plate 310 serves as a dust collection part. The powder chamber 312 is connected to the grinding chamber 313, and multiple air inlets 308 connected to the powder chamber 312 are opened on the side wall of the connecting base 307.

[0031] The connecting base 307 connects the drill barrel 315 and the bag dust collection mechanism 4. The frustum-shaped grinding column 309 is fixed by the mounting plate 310. The bag dust collection mechanism 4 forms a negative pressure in the powder hopper 312 through the air duct connector 311, the vent 317, and the air inlet 308, which draws the fine powder after grinding to the bag dust collection mechanism 4, thus completing dry dust removal without relying on a water source.

[0032] As an optional implementation, the drive unit includes a drill bit base 301, which is fixed to the movable end of the angle adjustment mechanism 2. The drill bit base 301 is rotatably engaged with the drill barrel 315. Multiple electromagnets 302 are evenly spaced along the inner circumference of the drill bit base 301, and adjacent electromagnets 302 have opposite polarities. The multiple electromagnets 302 are magnetically coupled with a matching number of permanent magnets 305, and adjacent permanent magnets 305 have opposite polarities. The permanent magnets 305 are embedded in the drill barrel 315.

[0033] When the electromagnet 302 in the drill bit base 301 is energized, it works magnetically with the permanent magnet 305 in the drill barrel 315 to drive the drill barrel 315 to rotate. The opposite polarities of the adjacent magnets ensure the dynamic stability of the rotation, realize contactless transmission, and reduce mechanical wear.

[0034] As an optional implementation, the inner wall of the drill bit base 301 is provided with at least two annular protrusions 303, which are coaxially arranged with the drill barrel 315. The drill barrel 315 is provided with annular grooves 304 in a number that match the number of annular protrusions 303 and are arranged in a one-to-one correspondence. The annular grooves 304 slide in cooperation with the annular protrusions 303.

[0035] The annular protrusion 303 of the drill bit base 301 slides in conjunction with the annular groove 304 of the drill barrel 315, which guides and limits the rotation of the drill barrel 315, ensuring the coaxiality of the rotation of the drill barrel 315 and improving the accuracy of drilling.

[0036] As an optional implementation, the drill bit base 301 and the connecting base 307 are fixed together by a plurality of circumferentially spaced connecting columns 306.

[0037] Multiple circumferentially spaced connecting columns 306 achieve a fixed connection between the drill bit base 301 and the connecting base 307, ensuring the stability of the connection and the uniformity of force distribution, preventing the connection from loosening when the drill barrel 315 rotates, and ensuring the normal operation of the device.

[0038] As an optional implementation, the angle adjustment mechanism 2 includes a base plate 204 fixed to the vehicle body 1 and a tilt plate 201 fixed to the fixed end of the electric slide table 7. It also includes a first lifting rod 202, the bottom of which is fixed to the center of the base plate 204, and the top of which is spherically hinged to the center of the bottom of the tilt plate 201. The top of the second lifting rod 203 is spherically hinged to the four corners of the bottom of the elevation plate 201, and the bottom of the second lifting rod 203 is spherically hinged to the bottom plate 204.

[0039] The first lifting rod 202 and the four corner second lifting rods 203 of the angle adjustment mechanism 2 are combined with a spherical hinge structure. Through telescopic adjustment, the elevation plate 201 can be driven to achieve multi-angle elevation and tilt rotation, which in turn drives the electric slide table 7 and the drilling mechanism 3 to adjust the drilling angle to adapt to the drilling needs of blasting surfaces at different positions and angles.

[0040] The specific usage process is as follows: The core of the blasting drilling device for tunnel blasting construction of the present invention is built on a vehicle body 1 as the basic carrier. An angle adjustment mechanism 2, a bag dust collection mechanism 4, a control mechanism 5 and a seat 6 are fixedly connected to the vehicle body 1. The fixed end of the angle adjustment mechanism 2 is fixedly connected to the vehicle body 1, and the movable end is connected to the fixed end of the electric slide 7. The movable end of the electric slide 7 is connected to the fixed end of the drilling mechanism 3. The angle adjustment mechanism 2, the electric slide 7, the drilling mechanism 3 and the bag dust collection mechanism 4 are all electrically connected to the control mechanism 5. The control mechanism 5 realizes the centralized control of each mechanism. The tail end of the drilling mechanism 3 is connected to the bag dust collection mechanism 4 through the connecting part to realize the synchronous operation of drilling and dust removal.

[0041] The angle adjustment mechanism 2 includes a base plate 204 fixed to the vehicle body 1 and an elevation plate 201 fixed to the fixed end of the electric slide table 7. A first lifting rod 202 is fixed at the center of the base plate 204. The top of the first lifting rod 202 is spherically hinged to the bottom center of the elevation plate 201. The tops of the second lifting rods 203 are also spherically hinged to the four corners of the bottom of the elevation plate 201. The bottom ends of the second lifting rods 203 are spherically hinged to the base plate 204. The extension and retraction of the first lifting rod 202 and the four second lifting rods 203 are controlled by the control mechanism 5. By utilizing the movable characteristics of the spherical hinge, the elevation plate 201 can be driven to achieve multi-angle elevation and retraction rotation, thereby driving the electric slide table 7 and the drilling mechanism 3 to adjust the drilling angle to adapt to the operational needs of different blasting surfaces.

[0042] The drilling mechanism 3 is the core working component, including a drill barrel 315. The drill barrel 315 is equipped with a drive unit, which is connected to the movable end of the electric slide table 7. The drill bit 316 is coaxially fixed at the front end of the drill barrel 315. The electric slide table 7 can drive the entire drilling mechanism 3 to achieve axial feed and complete the deep drilling of the blast hole.

[0043] The drive unit includes a drill bit base 301, which is fixed to the movable end of the electric slide 7 and rotates with the drill barrel 315. Multiple electromagnets 302 are evenly spaced along the inner circumference of the drill bit base 301, with adjacent electromagnets 302 having opposite polarities. The drill barrel 315 contains a fixed number of permanent magnets 305 matching the number of electromagnets 302, with adjacent permanent magnets 305 having opposite polarities. When the electromagnets 302 are energized, the magnetic force generated interacts with the permanent magnets 305, causing the drill barrel 315 to rotate around its own axis, thereby rotating the drill bit 316 to achieve drilling. The inner wall of the drill bit base 301 has at least two annular protrusions 303, which are coaxially arranged with the drill barrel 315. The drill barrel 315 has annular grooves 304 corresponding to the annular protrusions 303, which slide in cooperation with the annular protrusions 303 to ensure coaxiality and stability during the rotation of the drill barrel 315. The inner side of the drill barrel 315 is provided with a crushing section, a grinding section and a dust collection section in sequence along the direction from the drill bit 316 to the connection part. The crushing section is a crushing blade 314 fixed inside the drill barrel 315. After the rock core generated by drilling enters the drill barrel 315 with the rotation of the drill bit 316, it first comes into contact with the rotating crushing blade 314 and is crushed into particles.

[0044] The grinding section includes a fixedly installed frustoconical grinding column 309. The outer wall of the frustoconical grinding column 309 is provided with grinding patterns, and a grinding cavity 313 is formed between it and the inner wall of the drill barrel 315. The gap of the grinding cavity 313 gradually decreases along the direction from the drill bit 316 to the connecting part. The inner wall of the drill barrel 315 is also provided with spiral patterns. The crushed rock core particles enter the grinding cavity 313 during the feeding process of the drill barrel 315 and under the pushing action of the spiral patterns. Under the action of the grinding patterns of the frustoconical grinding column 309 and the gradually narrowing gap, they are further ground into fine powder.

[0045] The connecting part includes a connecting base 307. The drill bit base 301 and the connecting base 307 are fixed by a plurality of circumferentially spaced connecting columns 306. One end of the connecting base 307 is rotatably engaged with the tail end of the drill barrel 315, and the other end is rotatably engaged with a duct connector 311. The duct connector 311 is connected to the bag dust collection mechanism 4.

[0046] The frustum-shaped grinding column 309 is fixed in the connecting base 307 by the mounting plate 310. The mounting plate 310 has multiple vents 317 around its circumference. The powder hopper 312 formed between the tail end of the drill barrel 315 and the mounting plate 310 serves as a dust collection part. The powder hopper 312 is connected to the grinding chamber 313. The side wall of the connecting base 307 also has multiple air inlets 308 that communicate with the powder hopper 312. After the fine rock chips are ground, they enter the powder hopper 312. The bag filter dust collection mechanism 4 is activated to generate negative pressure. Outside air enters the powder hopper 312 through the air inlets 308, carrying the fine powder through the vents 317 and the duct connector 311 into the bag filter dust collection mechanism 4, realizing the collection and treatment of dust and completing the dry dust removal operation.

[0047] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0048] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A blasting drilling device for tunnel blasting construction, characterized in that, include: The vehicle body (1) and the angle adjustment mechanism (2), the bag dust collection mechanism (4), the control mechanism (5) and the seat (6) connected to the vehicle body (1); And, the drilling mechanism (3) and the electric slide (7) connected to the movable end of the angle adjustment mechanism (2); The fixed end of the angle adjustment mechanism (2) is connected to the vehicle body (1), the movable end of the angle adjustment mechanism (2) is connected to the fixed end of the electric slide (7), the movable end of the electric slide (7) is connected to the fixed end of the drilling mechanism (3), and the angle adjustment mechanism (2), the electric slide (7), the drilling mechanism (3) and the bag dust collection mechanism (4) are all connected to the control mechanism (5). The drilling mechanism (3) is connected to the bag dust collection mechanism (4); The drilling mechanism (3) includes a drill cylinder (315), which is driven by a drive unit. The drive unit is connected to the movable end of the electric slide (7). A drill bit (316) is coaxially fixed at the front end of the drill cylinder (315), and the tail end of the drill cylinder (315) is connected to the bag dust collection mechanism (4) through a connecting part. A crushing section, a grinding section, and a dust collection section are sequentially arranged along the direction from the drill bit (316) to the connecting part.

2. The blasting drilling device for tunnel blasting construction according to claim 1, characterized in that, The crushing section includes a crushing blade (314) fixed inside the drill barrel (315).

3. The blasting drilling device for tunnel blasting construction according to claim 1, characterized in that, The grinding section includes a frustum-shaped grinding column (309), which is fixedly installed. The gap between the frustum-shaped grinding column (309) and the inner wall of the drill barrel (315) serves as a grinding cavity (313), and the gap decreases sequentially from the front end to the tail end.

4. The blasting drilling device for tunnel blasting construction according to claim 3, characterized in that, The outer wall of the frustum-shaped grinding column (309) is provided with grinding patterns.

5. A blasting drilling device for tunnel blasting construction according to claim 1, characterized in that, The inner wall of the drill barrel (315) is provided with a spiral pattern.

6. A blasting drilling device for tunnel blasting construction according to claim 3, characterized in that, The connecting part includes a connecting base (307), which is fixed to the fixed end of the driving part. One end of the connecting base (307) is rotatably engaged with the tail end of the drill barrel (315), and the other end of the connecting base (307) is rotatably engaged with a duct connector (311). The duct connector (311) is connected to the bag dust collection mechanism (4). The frustum-shaped grinding column (309) is fixed in the connecting base (307) by the mounting plate (310), and multiple ventilation openings (317) are opened in the circumference of the mounting plate (310). The powder hopper (312) formed between the tail end of the drill barrel (315) and the mounting plate (310) serves as a dust collection part. The powder hopper (312) is connected to the grinding chamber (313), and multiple air inlets (308) connected to the powder hopper (312) are opened on the side wall of the connecting base (307).

7. A blasting drilling device for tunnel blasting construction according to claim 6, characterized in that, The drive unit includes a drill bit base (301), which is fixed to the movable end of the angle adjustment mechanism (2). The drill bit base (301) is rotatably engaged with the drill barrel (315). Multiple electromagnets (302) are evenly spaced in the inner circumference of the drill bit base (301), and the polarities of two adjacent electromagnets (302) are opposite. The multiple electromagnets (302) are magnetically coupled with a matching number of permanent magnets (305), and the polarities of two adjacent permanent magnets (305) are opposite. The permanent magnets (305) are embedded in the drill barrel (315).

8. A blasting drilling device for tunnel blasting construction according to claim 7, characterized in that, The inner wall of the drill bit base (301) is provided with at least two annular protrusions (303), the annular protrusions (303) are coaxially arranged with the drill barrel (315), and annular grooves (304) are opened on the drill barrel (315) in a number that match the number of annular protrusions (303) and are arranged in a one-to-one correspondence. The annular grooves (304) slide in cooperation with the annular protrusions (303).

9. A blasting drilling device for tunnel blasting construction according to claim 7, characterized in that, The drill bit base (301) and the connecting base (307) are fixed together by a plurality of circumferentially spaced connecting columns (306).

10. A blasting drilling device for tunnel blasting construction according to claim 1, characterized in that, The angle adjustment mechanism (2) includes a base plate (204) fixed to the vehicle body (1) and a tilting plate (201) fixed to the fixed end of the electric slide (7). It also includes a first lifting rod (202), the bottom of which is fixed to the center of the base plate (204), and the top of which is spherically hinged to the center of the bottom of the tilting plate (201); The top of the second lifting rod (203) is spherically hinged to the four corners of the bottom of the elevation plate (201), and the bottom of the second lifting rod (203) is spherically hinged to the bottom plate (204).

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