A blasting drilling device for mining

Abstract

The utility model provides a kind of blasting drilling device for mining, it is related to blasting drilling technical field, including hand-held frame, the upper surface center of hand-held frame is inserted with at least two outer tubes, coaxial distribution's air deflector is rotatably connected in outer tube inner wall, the butt joint of adjacent two outer tubes tail end and coaxial distribution, the tail end of air deflector is fixedly installed with several convex columns and the head of air deflector is inserted with several convex columns, by the direct connection of air deflector and drill bit, the wind power generated by fan can be more effectively transmitted to hole depth, not just form negative pressure on hole upper layer, the design of air deflector makes that wind power can be directly acted on hole interior along drill bit direction, reduce the loss of wind power in transmission process, to more effectively bring out dust in hole depth.

Description

Technical Field

[0001] This utility model relates to the field of blasting drilling technology, and in particular to a blasting drilling device for mining. Background Technology

[0002] Blasting is a construction method that involves drilling holes in rock or soil and placing explosives to blast them. It is widely used in mining, tunnel excavation, civil engineering, demolition of old buildings, and earthquake exploration. One of the factors that ensures the effectiveness of blasting is the quality of the holes through which the explosives are placed.

[0003] Therefore, in the existing technology of a blasting drilling device for blasting construction, with the publication number CN222350633U, the device is pushed to the designated position, then the motor is engaged and fixed to the drill rod, then the fifth positioning rod is threaded to the drill rod, the sixth positioning rod is threaded to the blower, and the connecting frame is engaged and fixed to the dust suppression frame. The motor drives the drill rod to rotate, the hydraulic cylinder drives the hydraulic rod to descend, and the lifting frame is supported and lowered smoothly. The blower head is brought into contact with the ground, the dust suppression frame is brought into contact with the ground and engaged with the blower head, the blower is turned on, and the ground is drilled. After drilling is completed, the hydraulic cylinder drives the hydraulic rod to rise, the lifting frame is supported and raised smoothly, and the blower head blows the upper layer of the hole after drilling, creating a negative pressure on the upper layer of the hole, blowing out the buried dust, and then blowing away the dust around the hole.

[0004] However, when air is blown from the top of the hole, although a certain negative pressure can be formed at the top of the hole, this negative pressure may not be enough to completely remove the dust deep inside the hole. The formation of negative pressure mainly depends on the wind force of the blower and the shape of the hole. When air is blown from the top, the transmission of wind force inside the hole may be hindered. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art by proposing a blasting drilling device for mining.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a blasting drilling device for mining, comprising a handheld frame, at least two outer cylinders inserted into the center of the upper surface of the handheld frame, and coaxially distributed air guide pipes rotatably connected to the inner wall of the outer cylinders. The ends of two adjacent outer cylinders are joined together and coaxially distributed. Several protruding posts are fixedly installed at the tail end of the air guide pipes, and the head end of the air guide pipes is inserted into several protruding posts. A drill bit is inserted into the tail end of the tail end of the air guide pipe through several protruding posts. A protrusion extending upward is provided on one side of the top of the drill bit through a bearing, and the protrusion is connected to the inner wall of the rack groove on the tail outer cylinder through a pin. A fan is fixedly installed on the upper surface of the handheld frame, and the air outlet of the fan is inserted into the head end of the initial air guide pipe.

[0007] Preferably, a rack groove is provided on one side of the outer wall of the outer cylinder, and an electric gear is rotatably connected to the handheld frame and meshes with the inner tooth surface of the rack groove. The two ends of the electric gear are clearance-fitted with the inner wall of the rack groove.

[0008] Preferably, a U-shaped pin is provided in the rack groove at the joint end of the two adjacent outer cylinders, and the U-shaped pin is provided through the inner wall of the rack groove at the joint end of the two adjacent outer cylinders.

[0009] Preferably, the drill bit has a hollow central axis with a post inserted into it. The top of the post has a countersunk hole, and the inner wall of the countersunk hole has several iron rods arranged in a ring array around the central axis of the drill bit and inserted into the inner wall of the drill bit in a downward oblique direction.

[0010] Preferably, a magnetic block is detachably installed inside the countersunk hole, and the magnetic block is magnetically attracted to several iron rods and a hanging rope is installed on the magnetic block.

[0011] Preferably, the upper surface edge of the handheld frame is threaded with several leveling bolts, and the lower surface of the handheld frame is provided with a dust cover that is inserted into the outer cylinder, and a rubber pad is installed at the bottom edge of the dust cover opening.

[0012] Preferably, a linear module perpendicular to the upper surface of the handheld frame is also fixedly installed on one side of the upper surface of the handheld frame. A motor is fixedly installed on the slide part of the linear module, and a plug that is inserted into the first end of the air guide tube at the starting position is fixedly installed on the main shaft of the motor.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by directly connecting the air duct to the drill bit, the air force generated by the fan can be more effectively transmitted to the depth of the hole, instead of only forming negative pressure on the upper layer of the hole. The design of the air duct allows the air force to act directly on the inside of the hole along the direction of the drill bit, reducing the loss of air force during transmission, thereby more effectively carrying out the dust from the depth of the hole.

[0015] 2. In this utility model, by setting an iron rod, under normal circumstances, the iron rod is used to ensure that the bottom end of the insertion post compensates for the missing part of the bottom end of the drill bit, thereby ensuring the integrity of the drill bit tip. Furthermore, the set magnetic block can be used to lift the iron rod and the insertion post, making it convenient to remove the insertion post and thus not affecting the air blowing. Attached Figure Description

[0016] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a blasting drilling device for mining;

[0017] Figure 2 This utility model provides a structural schematic diagram of the outer cylinder of a blasting drilling device for mining;

[0018] Figure 3 This utility model proposes a blasting drilling device for mining. Figure 2 A schematic diagram of the structure viewed from below;

[0019] Figure 4 This is a cross-sectional view of the handheld device.

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the drill bit;

[0021] Figure 6 for Figure 2 Enlarged view of point A in the middle.

[0022] Legend: 1. Handheld frame; 2. Leveling bolt; 3. Lifting rope; 4. Magnetic block; 5. Outer cylinder; 6. Drill bit; 7. Rack groove; 8. Rubber pad; 9. Dust cover; 10. Fan; 11. Air duct; 12. Linear module; 13. Motor; 14. Insert; 15. Insert post; 16. Iron rod; 17. Protruding post; 18. Electric gear; 19. U-shaped pin; 20. Countersunk hole; 21. Protrusion. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] like Figures 1-6 As shown, a mining blasting drilling device includes a handheld frame 1. Several leveling bolts 2 are threaded through the upper surface edge of the handheld frame 1. In actual use, different extensions and retractions are achieved by rotating the leveling bolts 2 in different positions, thus adjusting the inclination of the central axis of the handheld frame 1 for easy adjustment according to the drilling direction. At least two outer cylinders 5 are inserted into the center of the upper surface of the handheld frame 1. Since the length of the outer cylinders 5 is fixed, the corresponding number of outer cylinders 5 are selected and combined according to the depth of the blasting borehole. Insertion holes are provided on the inner walls of the rack grooves 7 at the mating ends of adjacent outer cylinders 5. U-shaped pins 19 are inserted into these insertion holes at their respective ends, and the inserted ends can be positioned by nuts. The U-shaped pins 19, which penetrate the inner walls of the rack grooves 7 at the mating ends of adjacent outer cylinders 5, fix the relative positions of the opposite end faces of the adjacent outer cylinders 5.

[0026] A rack groove 7 is provided on one side of the outer wall of the outer cylinder 5. The rack groove 7 has teeth on the side wall near the central axis of the outer cylinder. An electric gear 18 is rotatably connected to the handheld frame 1, meshing with the inner teeth of the rack groove 7. The two ends of the electric gear 18 are clearance-fitted with the inner walls of the rack groove 7. The electric gear 18 is driven to rotate by a stepper motor mounted on the handheld frame 1. The outer cylinder 5 rises and falls with the rotation of the electric gear 18 due to the meshing relationship between the electric gear 18 and the inner teeth of the rack groove 7. Conversely, the meshing of the electric gear 18 with the rack groove 7 also prevents the outer cylinder 5 from rotating on its own and facilitates the assembly and disassembly of adjacent outer cylinders 5. During assembly and disassembly, the electric gear 18 meshes with the top of the rack groove 7 on the lower outer cylinder 5. When the electric gear 18 is not rotating, the corresponding outer cylinder 5 will not rise or fall, thus facilitating the installation of a new outer cylinder 5 or the removal of an existing one. Since the stepper motor's spindle does not rotate when it is not powered, its internal stop structure allows the stepper motor's power output shaft to rotate, thereby preventing the linked electric gear 18 from rotating and ultimately stopping the outer cylinder 5. The stepper motor and its stop structure are existing technology and not the subject of this invention; their specific structure and principle are not described in detail here.

[0027] The inner wall of the outer cylinder 5 is rotatably connected to coaxially distributed air guide pipes 11. The ends of two adjacent outer cylinders 5 are joined together and coaxially distributed. Several protrusions 17 are fixedly installed at the tail end of the air guide pipe 11, and the head end of the air guide pipe 11 is inserted into several protrusions 17. Specifically, the tail end (i.e., the lower end face) of the upper air guide pipe 11 of two adjacent air guide pipes 11 is provided with a protrusion 17, and the head end (i.e., the upper end face) of the lower air guide pipe 11 is provided with a matching insertion hole for the protrusion 17, so as to ensure that the two adjacent outer cylinders 5 are combined and the two adjacent air guide pipes 11 are in an inserted state and rotate around the center of the outer cylinder 5 at the same speed inside the outer cylinder 5. The tail end of the last air guide pipe 11 is inserted into a drill bit 6 through several protrusions 17. One side of the top of the drill bit 6 is provided with an upwardly extending protrusion 21 through a bearing, and the protrusion 21 is connected to the inner wall of the rack groove 7 on the lowest outer cylinder 5 through a pin. Figure 5As shown, the upper surface of the drill bit 6 is embedded with a coaxially distributed bearing, and one side of the top of the outer ring of the bearing protrudes upward to form a protrusion 21. The protrusion 21 is used to insert into the rack groove 7 on the outer cylinder 5 and facilitates the pin connection, thereby realizing the position installation of the drill bit 6. The drill bit 6 can be rotated by driving the air guide pipe 11 to rotate. With the outer cylinder 5 descending, the rotating drill bit 6 can be used for drilling. A fan 10 is fixedly installed on the upper surface of the handheld frame 1. The air outlet of the fan 10 is inserted into the first end of the initial air guide pipe 11. After drilling is completed, the air outlet of the fan 10 is connected to the top end of the top air guide pipe 11. The generated airflow directly passes through several air guide pipes 11 and the hollow position of the drill bit 6 to reach the bottom of the formed drill hole. The airflow then blows upward from the spiral groove on the surface of the drill bit 6 and then blows out along the gap between the outer wall of the outer cylinder 5 and the inner wall of the drill hole. The bottom-up airflow helps to ensure that the formed drill hole is clean and tidy.

[0028] The protrusion 21 is connected to the outermost outer cylinder 5, but the protrusion 21 is connected to the drill bit 6 through a bearing. The inner and outer rings of the bearing rotate independently. The top of the drill bit 6 is inserted into the tail end of the adjacent air duct 11. Therefore, the rotation of the air duct 11 drives the drill bit 6 to rotate, realizing the rotation of the inner ring of the bearing relative to the outer ring. The outer ring does not rotate because the protrusion 21 is inserted into the rack groove on the adjacent outer cylinder 5. Therefore, the function of the protrusion 21 and the outer ring of the bearing is to install the drill bit 6 at the tail end of the outer cylinder 5, but it will not affect the rotation of the drill bit 6.

[0029] The drill bit 6 has a hollow center with a post 15 inserted into it. The top of the post 15 has a countersunk hole 20. Several iron rods 16 are arranged in a ring around the center of the drill bit 6 and inserted into the inner wall of the drill bit 6 in a downward direction. A magnetic block 4 is detachably placed in the countersunk hole 20. The magnetic block 4 is magnetically attracted to the iron rods 16 and a suspension rope 3 is installed on the magnetic block 4. The post 15 is provided to ensure the strength of the drill bit 6 tip. The iron rods 16 inside the post 15 penetrate the wall of the countersunk hole 20 and are inserted into the drill bit 6 under the action of gravity, which fixes the relative position of the post 15 and the drill bit 6. When the drill bit 6 rotates, the post 15 rotates synchronously under the interference of the iron rods 16.

[0030] When air needs to be blown, the magnetic block 4 is placed into the countersunk hole 20 along the air guide tube 11 using the suspension rope 3. The magnetic block 4 attracts the iron rod 16, causing the iron rod 16 to move upward along the inclined direction and be attracted to the magnetic block 4. After the iron rod 16 is separated from the drill bit 6, since the iron rod 16 is always inserted into the hole wall of the countersunk hole 20, the iron rod 16 and the insertion post 15 can be raised along with the magnetic block 4 as the suspension rope 3 rises. Then the insertion post 15 is taken out along the air guide tube 11. In addition, in this solution, the air guide tube 11 and the insertion post 15 are made of non-ferrous magnetic metals such as non-ferrous metals.

[0031] To ensure that the iron rod 16 is always inserted into the wall of the countersunk hole 20, the iron rod 16 must be of sufficient length. This length must be such that when the magnet attracts the iron rod 16 and pulls it upward, the lower end of the iron rod 16 will not detach from the insertion post 15. In other words, the length of the iron rod 16 should be greater than the straight distance from the insertion hole corresponding to the iron rod 16 to the inner wall of the opposite side of the countersunk hole 20.

[0032] A dust cover 9 is installed on the lower surface of the handheld frame 1 and inserted into the outer cylinder 5. A rubber pad 8 is installed on the bottom edge of the dust cover 9. During the blowing process, the rubber pad 8 is used to make the dust cover 9 descend until the opening fits around the drilling area. By installing a filter bag on the side of the dust cover 9, the dust raised during the blowing process enters the filter bag with the airflow and is collected.

[0033] A linear module 12 is fixedly installed on one side of the upper surface of the handheld frame 1, perpendicular to the upper surface of the handheld frame 1. A motor 13 is fixedly installed on the slide part of the linear module 12. A plug 14 is fixedly installed on the main shaft of the motor 13 and inserted into the first end of the air guide tube 11 at the starting position. The linear module 12 drives the motor 13 to rise and fall until the plug 14 on its main shaft is inserted into the top end of the top air guide tube 11. The motor 13 can drive the plug 14 to rotate and drive the air guide tube 11 to rotate. The motor 13 rises and falls synchronously with the outer cylinder 5 under the action of the linear module 12.

[0034] Working principle: After adjusting the angle of the handheld frame 1, select the corresponding number of outer cylinders 5 for assembly and connection. Install the drill bit 6 in the assembled bottom air duct 11. Under the combined action of the electric gear 18 and the linear module 12, the outer cylinder 5 drives the rotating air duct 11 and the drill bit 6 to descend and drill a hole. After drilling is completed, use the suspension rope 3 to place the magnetic block 4 into the countersunk hole 20 along the air duct 11. The magnetic block 4 attracts the iron rod 16 magnetically, causing the iron rod 16 to move upward along the inclined direction and be attracted to the magnetic block 4. After the iron rod 16 is detached from the drill bit 6, since the iron rod 16 is always inserted into the wall of the countersunk hole 20, as the hoisting rope 3 rises, the iron rod 16 and the insertion post 15 can rise along with the magnetic block 4. Then, the drill bit 6 is taken out along the air guide pipe 11. Then, the motor 13 is detached from the outer cylinder 5, and the air outlet pipe of the blower 10 is connected to the top of the top air guide pipe 11. The generated airflow directly passes through several air guide pipes 11 and the hollow position of the drill bit 6 to reach the bottom of the formed drill hole. The bottom-up blowing helps to ensure that the formed drill hole is clean and tidy.

[0035] The wiring diagrams of the fan 10, motor 13, and linear module 12 in this utility model are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the fan 10, motor 13, and linear module 12 will not be explained in detail.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A blasting drilling device for mining, characterized in that: The device includes a handheld frame (1), with at least two outer cylinders (5) inserted into the center of the upper surface of the handheld frame (1). The inner wall of the outer cylinder (5) is rotatably connected to coaxially distributed air guide pipes (11). The two adjacent outer cylinders (5) are joined at their ends and coaxially distributed. The tail end of the air guide pipe (11) is fixedly installed with several protrusions (17), and the head end of the air guide pipe (11) is inserted into several protrusions (17). The tail end of the air guide pipe (11) is connected to a drill bit (6) through several protrusions (17). The top of the drill bit (6) is provided with an upwardly extending protrusion (21) through a bearing, and the protrusion (21) is connected to the inner wall of the rack groove (7) on the tail outer cylinder (5) through a pin. The upper surface of the handheld frame (1) is fixedly installed with a fan (10), and the air outlet of the fan (10) is inserted into the head end of the initial air guide pipe (11).

2. The mining blasting drilling device according to claim 1, characterized in that: A rack groove (7) is provided on one side of the outer wall of the outer cylinder (5). An electric gear (18) is rotatably connected to the handheld frame (1) and meshes with the inner tooth surface of the rack groove (7). The two ends of the electric gear (18) are in clearance fit with the inner wall of the rack groove (7).

3. The mining blasting drilling device according to claim 1, characterized in that: U-shaped pins (19) are provided in the rack grooves (7) at the joint ends of the two adjacent outer cylinders (5). The U-shaped pins (19) penetrate the inner wall of the rack grooves (7) at the joint ends of the two adjacent outer cylinders (5).

4. The mining blasting drilling device according to claim 1, characterized in that: The drill bit (6) is hollow at the central axis and a post (15) is inserted into the hollow. A countersunk hole (20) is opened at the top of the post (15). Several iron rods (16) are arranged in a ring array around the central axis of the drill bit (6) and inserted into the inner wall of the drill bit (6) in a downward direction.

5. The mining blasting drilling device according to claim 4, characterized in that: A magnetic block (4) is detachably installed inside the countersunk hole (20). The magnetic block (4) is magnetically attracted to several iron rods (16), and a hanging rope (3) is installed on the magnetic block (4).

6. The mining blasting drilling device according to claim 1, characterized in that: The upper surface edge of the handheld frame (1) is threaded with several leveling bolts (2), and the lower surface of the handheld frame (1) is provided with a dust cover (9) inserted into the outer cylinder (5). The bottom edge of the dust cover (9) is equipped with a rubber pad (8).

7. The mining blasting drilling device according to claim 1, characterized in that: A linear module (12) perpendicular to the upper surface of the handheld frame (1) is also fixedly installed on one side of the upper surface of the handheld frame (1). A motor (13) is fixedly installed on the slide part of the linear module (12). A plug (14) that is inserted into the first end of the air duct (11) at the starting position is fixedly installed on the main shaft of the motor (13).

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