Blasting drilling device for mining

Abstract

The invention belongs to the technical field of mining equipment, and particularly relates to a blasting drilling device for mining. The chip removal type drill bit mechanism is mounted outside the mechanical arm and is used for removing chips in the drilled hole; the auxiliary cleaning mechanism is mounted outside the chip cleaning type drill bit mechanism and is used for cleaning chips between the chip cleaning type drill bit mechanism and the inner wall of the hole; and the driving mechanism is installed outside the mechanical arm and used for adjusting the pressure intensity of the scrap cleaning type drill bit mechanism and the auxiliary cleaning mechanism. Through the collaborative design of the chip removal type drill bit mechanism, the mechanical arm and the vehicle carrier, the chip removal process can be directly started after drilling is completed, a piston is driven by a hydraulic cylinder to reciprocate in a sealing sleeve, and chips at the bottom of a hole can be efficiently sucked in cooperation with an inclined pressure channel formed by a conical barrel and a notch; the four drill bits achieve opening and closing actions, chips clamped in gaps of the drill bits are synchronously cleaned, and the problems that in mining, the chip cleaning cost is high, and the efficiency is low are effectively solved.

Description

Technical Field

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

[0002] In open-pit mining operations, blasting drilling is a core pre-process, and its drilling quality and subsequent cuttings removal efficiency directly determine the mining cycle, operational safety, and overall cost. Currently, drilling and cuttings removal are two separate processes. Mainstream mining blasting drilling equipment primarily relies on robotic arms to drive an integrated drill bit for drilling operations. Furthermore, the drill bit must be completely removed from the borehole before additional cuttings removal equipment (such as high-pressure air purging equipment or specialized suction devices) or manual methods are used for cuttings removal.

[0003] Existing drilling equipment typically uses a one-piece drill bit structure. After drilling, the hole is left with a residue of lumpy debris at the bottom and fine dust adhering to the borehole wall. On one hand, the debris at the bottom can lead to insufficient or uneven distribution of explosives during subsequent loading, reducing blasting energy utilization and even posing a risk of misfires or incomplete detonation, thus affecting ore crushing. On the other hand, the fine dust adhering to the borehole wall easily settles and clogs the borehole after drilling, while debris stuck in the drill bit gap can cause uneven stress on the drill bit during subsequent drilling, accelerating drill bit wear, shortening drill bit lifespan, and increasing equipment maintenance costs. Furthermore, separate debris removal methods are insufficient to effectively and thoroughly clean both the lumpy debris at the bottom and the fine dust adhering to the borehole wall simultaneously, especially the residue in the narrow gap between the drill bit and the borehole wall, which is highly susceptible to clogging the borehole after drilling due to gravity settling. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes a blasting drilling device for mining that integrates drilling with efficient cuttings removal, achieving immediate and automatic cuttings removal after drilling. The technical solution adopted by this invention to solve its technical problem is as follows: Blasting drilling equipment used in mining includes: Robotic arm and vehicle carrier fixedly connected to its bottom; A chip-removing drill bit mechanism, which is installed on the outside of the robotic arm, is used to remove debris from the borehole; The auxiliary cleaning mechanism is installed outside the chip-removing drill bit mechanism and is used to clean the debris between the chip-removing drill bit mechanism and the inner wall of the hole. The drive mechanism, which is mounted on the outside of the robotic arm, is used to adjust the pressure of the chip-removing drill bit mechanism and the auxiliary cleaning mechanism; The chip-removing drill bit mechanism includes a sealing sleeve, with a threaded pull rod movably connected to the inner cavity of the sealing sleeve. A threaded sleeve is fitted around the outer ring of the threaded pull rod, and two pistons are fixedly connected to the outer ring of the threaded sleeve. A cross plate is fitted on the threaded pull rod, and L-shaped rods are fixedly connected to all four sides of the outer ring of the sealing sleeve. U-shaped seats one and two are fixedly connected to the outer wall of the L-shaped rod and the bottom of the cross plate, respectively. A rod one is rotatably connected to the inner cavity of U-shaped seat one through a bearing, and two rods two are rotatably connected to the inner cavity of U-shaped seat two through a bearing. A fixed rod is rotatably connected between every two rods two through a bearing. A drill bit is fixedly connected to the bottom of each of the four fixed rods, and every two rods two are rotatably connected to the corresponding rod one through a bearing.

[0005] Preferably, the inner wall of the sealing sleeve is provided with limit grooves on all four sides, a rotating gear is fixedly connected to one side of the threaded tie rod, a circular hole adapted to the threaded tie rod is provided through the middle of the threaded sleeve, a hydraulic cylinder is fixedly connected to the top of the cross plate, and limit rods adapted to the limit grooves are fixedly connected to all four sides of the outer wall of the threaded sleeve.

[0006] Preferably, chip removal grooves are provided on both sides of the bottom of the sealing sleeve, a chip removal pipe is fixedly connected to the inner cavity of the chip removal groove, a rotating rod is rotatably connected to the inner wall of the chip removal pipe through a bearing, a cover plate is fixedly connected to the outer ring of the rotating rod, and a stop plate is also fixedly connected to the inner wall of the chip removal pipe.

[0007] Preferably, a conical ring is fixedly connected to the bottom of one of the pistons, and cleaning cones are fixedly connected to the inner wall of the conical ring. The outer edge of the bottom of the conical ring is in contact with the inner wall of the sealing sleeve, and the gaps between the four cleaning cones and the four drill bits correspond.

[0008] Preferably, the bottom of the sealing sleeve is fixedly connected to a conical cylinder with its conical surface facing into the borehole, and the outer ring of the conical cylinder has several slots.

[0009] Preferably, the auxiliary cleaning mechanism includes four U-shaped rods fixedly connected to the bottom of the cross plate. A round rod is fixedly connected to the bottom of each U-shaped rod, and a movable plug is fixedly connected to the bottom of each round rod. A cylinder is sleeved around the outer ring of the movable plug, and a connecting pipe is fixedly sleeved between each of the four cylinders and the sealing sleeve.

[0010] Preferably, the bottom of each of the four cylinders is provided with multiple oblique grooves, which can form an oblique negative pressure channel when debris is present between the suction hole wall and the outer wall of the drill bit.

[0011] Preferably, the drive mechanism includes a connecting plate fixedly connected to the robotic arm, a rotary drive component fixedly connected to the top of the connecting plate, the bottom of the output shaft of the rotary drive component passing through the connecting plate and fixedly connected to a hydraulic cylinder, and a gear A being fitted on the outer ring of the output shaft of the rotary drive component.

[0012] Preferably, the bottom of the connecting plate is rotatably connected to two rods via bearings, and the bottom of one of the rods is fixedly connected to a gear B that meshes with gear A.

[0013] Preferably, the outer ring and bottom of the other rod are respectively fitted with gears C and D that mesh with gear B and the rotating gear.

[0014] The advantages of this invention are: 1. This invention, through the coordinated design of a chip-removing drill bit mechanism, a robotic arm, and a vehicle carrier, eliminates the need for additional chip-removing equipment or manual labor. The chip-removing process can be initiated directly after drilling is completed. A hydraulic cylinder drives a piston to reciprocate within a sealed sleeve, which, combined with the inclined pressure channel formed by the conical cylinder and the slot, efficiently sucks up debris from the bottom of the hole. Simultaneously, the four drill bits open and close, clearing debris stuck in their own gaps. This design eliminates the steps of equipment scheduling and manual chip removal in traditional operations, effectively solving the pain points of high cost and low efficiency in chip removal during mining.

[0015] 2. This invention achieves multi-directional debris removal through a debris-removing drill bit mechanism and a secondary cleaning mechanism. The sealing sleeve and double pistons of the debris-removing drill bit mechanism ensure stable suction of debris from the bottom of the hole. The conical ring and cleaning cone scrape off debris adhering to the inner wall of the sealing sleeve and push out residual debris in the drill bit gap. The cylinder, movable plug, and inclined groove of the secondary cleaning mechanism form an inclined negative pressure channel, which can specifically clean dust and fine debris in the gap between the drill bit and the hole wall. The debris is then discharged uniformly through the connecting pipe into the sealing sleeve. This design avoids the risk of uneven explosive loading and misfires caused by debris accumulation at the bottom of the hole, as well as the problem of hole blockage caused by debris adhering to the hole wall. At the same time, it reduces uneven wear of the drill bit caused by debris jamming, thus extending the service life of the drill bit.

[0016] 3. The drive mechanism of this invention drives the threaded pull rod to rotate via gear transmission. Combined with the cooperation of the threaded sleeve and the limiting rod, the movement stroke of the piston within the sealing sleeve can be flexibly adjusted. This allows for dynamic control of the suction pressure based on the amount of debris in the hole. For lumpy debris, the stroke is increased to enhance negative pressure and ensure effective suction; for powdery debris, the stroke is shortened to reduce pressure and prevent hole wall collapse. This design solves the problems of traditional equipment where fixed pressure prevents the extraction of lumpy debris and where powdery debris causes hole collapse. It also avoids unnecessary energy consumption, protects the sealing sleeve from damage due to excessive pressure, and improves equipment operational stability and safety. 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 description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the chip-removing drill bit mechanism of the present invention; Figure 3 This is a schematic diagram of the threaded tie rod and cleaning cone of the present invention; Figure 4 This is a schematic diagram of the sealing sleeve and surrounding components of the present invention; Figure 5 This is a schematic diagram of the internal structure of the sealing sleeve of the present invention; Figure 6 This is a schematic diagram of the drill bit in its open / closed state according to the present invention; Figure 7 This is a schematic diagram of the auxiliary cleaning mechanism of the present invention; Figure 8 This is a schematic diagram of the drive mechanism of the present invention.

[0019] In the diagram: 100, robotic arm; 101, vehicle carrier; 200, chip removal drill bit mechanism; 201, sealing sleeve; 202, threaded tie rod; 203, threaded sleeve; 204, piston; 205, cross plate; 206, L-bar; 207, U-shaped seat one; 208, U-shaped seat two; 209, rod one; 210, rod two; 211, fixing rod; 212, drill bit; 213, limiting groove; 214, rotating gear; 215, circular hole; 216, hydraulic cylinder; 217, limiting rod; 218, chip removal pipe. 219. Rotating rod; 220. Cover plate; 2201. Abutment plate; 221. Conical ring; 222. Cleaning cone; 223. Conical cylinder; 224. Groove; 300. Secondary cleaning mechanism; 301. U-shaped rod; 302. Round rod; 303. Movable plug; 304. Cylinder; 305. Connecting pipe; 306. Inclined groove; 400. Drive mechanism; 401. Connecting plate; 402. Rotary drive component; 403. Gear A; 404. Rod body; 405. Gear B; 406. Gear C; 407. Gear D. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1 to 8 Blasting drilling equipment for mining operations, including: The system includes a robotic arm 100 and a vehicle carrier 101 fixedly connected to its bottom; a chip-removing drill bit mechanism 200, which is installed outside the robotic arm 100 and used to clean chips inside the borehole; a secondary cleaning mechanism 300, which is installed outside the chip-removing drill bit mechanism 200 and used to clean chips between the chip-removing drill bit mechanism 200 and the borehole wall; and a drive mechanism 400, which is installed outside the robotic arm 100 and used to adjust the pressure of the chip-removing drill bit mechanism 200 and the secondary cleaning mechanism 300. The chip-removing drill bit mechanism 200 includes a sealing sleeve 201. A threaded pull rod 202 is movably connected to the inner cavity of the sealing sleeve 201. A threaded sleeve 203 is fitted around the outer ring of the threaded pull rod 202. Two pistons 204 are fixedly connected to the outer ring of the threaded sleeve 203. A cross plate 205 is fitted onto the threaded pull rod 202. L-shaped rods 206 are fixedly connected to all four sides of the outer ring of the sealing sleeve 201. U-shaped seats 1 and 208 are fixedly connected to the outer wall of the L-shaped rods 206 and the bottom of the cross plate 205, respectively. A rod 1 209 is rotatably connected to the inner cavity of U-shaped seat 1 207 via a bearing. Two rods 210 are rotatably connected to the inner cavity of U-shaped seat 208 via a bearing. A fixed rod 211 is rotatably connected between every two rods 210 via a bearing. A drill bit 212 is fixedly connected to the bottom of each of the four fixed rods 211. Each pair of rods 210 is rotatably connected to the corresponding rod 1 209 via a bearing. The sealing sleeve 201 has chip removal grooves on both sides of its bottom. A chip removal pipe 218 is fixedly connected to the inner cavity of the chip removal groove. A rotating rod 219 is rotatably connected to the inner wall of the chip removal pipe 218 via a bearing. A cover plate 220 is fixedly connected to the outer ring of the rotating rod 219. A stop plate 2201 is also fixedly connected to the inner wall of the chip removal pipe 218. A conical cylinder 223 with its conical surface facing into the drill hole is fixedly connected to the bottom of the sealing sleeve 201. Several slots 224 are opened on the outer ring of the conical cylinder 223. Limiting grooves 213 are opened around the inner wall of the sealing sleeve 201. A rotating gear 214 is fixedly connected to one side of the threaded pull rod 202. A circular hole 215 adapted to the threaded pull rod 202 is opened through the middle of the threaded sleeve 203. A hydraulic cylinder 216 is fixedly connected to the top of the cross plate 205. Limiting rods 217 adapted to the limiting grooves 213 are fixedly connected around the outer wall of the threaded sleeve 203.

[0022] The blasting drilling device for mining provided in this embodiment of the invention, after drilling blasting holes in the mine, uses a hydraulic cylinder 216 as a power source to drive a cross plate 205 and a threaded rod 202, so that a piston 204 moves up and down within a sealing sleeve 201. When the piston 204 moves down, the cross plate 205 moves down, causing the U-shaped seat 208 to move down as well. Since every two rods 210 are rotatably connected to their corresponding rods 209 via bearings, when the device moves down, the two rods 210 in the inner cavity of the U-shaped seat 208 rotate. After rotation, the four fixed rods 211 connected to them via bearings drive the four corresponding drill bits 212 to move up and unfold to form an opening (e.g., Figure 6 As shown), when the piston 204 moves upward, it creates pressure and suction in the sealing sleeve 201, drawing the debris from the borehole into the inner cavity of the sealing sleeve 201. The conical cylinder 223 and its outer ring have multiple slots 224, creating an oblique pressure channel (as shown) when the sealing sleeve 201 draws in debris. Figure 4 As shown), this increases the suction capacity generated by the piston 204 moving within the sealing sleeve 201. Simultaneously, the four drill bits 212 synchronously reset and close the opening. Due to the pressure difference generated within the sealing sleeve 201, the cover plate 220 inside the chip discharge pipe 218 rotates via the rotating rod 219, opening the chip discharge pipe 218 and releasing the seal, allowing the extracted chips to be discharged (e.g., ...). Figure 4 (As shown). Due to the reciprocating motion of piston 204, the cuttings in the borehole can be continuously processed. Therefore, this device does not require additional equipment and manpower to clean the cuttings, reducing the cost of use, the intensity of labor, and the impact on mining time. If the drill bit 212 experiences tooth wear due to long-term contact with rock, the connecting bearing between the fixed rod 211 and the second rod 210 can be directly removed to replace the drill bit 212 without disassembling the entire chip-removing drill bit mechanism 200.

[0023] like Figure 3 As shown, a conical ring 221 is fixedly connected to the bottom of one of the pistons 204. Cleaning cones 222 are fixedly connected to the inner wall of the conical ring 221. The outer edge of the bottom of the conical ring 221 fits against the inner wall of the sealing sleeve 201. The gaps between the four cleaning cones 222 and the four drill bits 212 correspond. When the piston 204 moves up and down in the sealing sleeve 201, the outer edge of the bottom of the conical ring 221 scrapes away the debris adhering to the inner wall of the sealing sleeve 201, preventing the debris from adhering to the sealing sleeve 201. At the same time, the cleaning cones 222 corresponding to the gaps between the four drill bits 212 will also push out the debris adhering between the gaps of the four drill bits 212, preventing the drill bits 212 from obstructing the next drilling of the mine.

[0024] like Figure 7As shown, the auxiliary cleaning mechanism 300 includes four U-shaped rods 301 fixedly connected to the bottom of the cross plate 205. A round rod 302 is fixedly connected to the bottom of each U-shaped rod 301, and a movable plug 303 is fixedly connected to the bottom of each round rod 302. A cylinder 304 is sleeved around the outer ring of the movable plug 303. A connecting pipe 305 is fixedly sleeved between each of the four cylinders 304 and the sealing sleeve 201. Multiple oblique grooves 306 are opened at the bottom of each of the four cylinders 304, which can form an oblique negative pressure channel when debris is present between the suction hole wall and the outer wall of the drill bit 212. When the cross plate 205 moves, it drives the four... The U-shaped rods 301 move together, causing the round rod 302 to drive the movable plug 303 to move within the corresponding cylinder 304. When the movable plug 303 moves upward, it draws the debris between the outer wall of the drill bit 212 and the inner wall of the blast hole into the cylinder 304. During the suction, multiple inclined grooves 306 at the bottom of the cylinder 304 form an inclined negative pressure channel, increasing the suction capacity. Then, the debris enters the sealing sleeve 201 through the connecting pipe 305 and is discharged along with the debris in the sealing sleeve 201. Thus, this device can process the debris in the hole from multiple directions, thereby improving the usage effect.

[0025] like Figure 8As shown, the drive mechanism 400 includes a connecting plate 401 fixedly connected to the robotic arm 100. A rotary drive component 402 is fixedly connected to the top of the connecting plate 401. The bottom of the output shaft of the rotary drive component 402 passes through the connecting plate 401 and is fixedly connected to the hydraulic cylinder 216. A gear A403 is fitted on the outer ring of the output shaft of the rotary drive component 402. Two rods 404 are rotatably connected to the bottom of the connecting plate 401 via bearings. A gear B405 that meshes with the gear A403 is fixedly connected to the bottom of one rod 404, and the outer ring of the other rod 404 is fixedly connected to the bottom. Parts are respectively equipped with gears C406 and D407 that mesh with gear B405 and rotating gear 214; after drilling is completed by the chip-removing drill bit mechanism 200 driven by the output shaft of the rotary drive 402 (which can be a motor), the chip-removing drill bit mechanism 200 is moved upward from the hole by the robotic arm 100, leaving enough distance for the drill bit 212 to extend and retract. Then, the output shaft of the rotary drive 402 drives gear A403 to rotate. When gear A403 rotates, it drives gear B405, which meshes with it, to rotate. When gear B405 rotates, it drives gear D406, which meshes with gear B405, to rotate. The meshing gear C406 rotates, causing the corresponding rod 404 and gear D407 to rotate. When gear D407 rotates, it drives the rotating gear 214 meshing with it on the threaded pull rod 202 to rotate, thus causing the threaded pull rod 202 to rotate. This rotation, through the circular hole 215, drives the threaded sleeve 203 to move up and down within the limiting groove 213 via the limiting rod 217, positioning the two pistons 204 on the threaded sleeve 203 at their movable stroke positions within the sealing sleeve 201 (i.e., the condition of debris inside the hole can be detected in advance by a position sensor built into the sealing sleeve 201, according to...). Feedback on the debris situation causes the external PLC controller to send corresponding control commands to the rotary drive 402 to adjust the initial position of the threaded sleeve 203, thereby achieving intelligent and precise adjustment of the stroke. The adjustment stops when the pressure required for the debris in the hole is reached. For example, if the amount of debris in the hole is small, the stroke can be shortened. When the debris is extracted and discharged, the pressure generated will be reduced, preventing excessive pressure from damaging the sealing sleeve 201, or from wasting energy by using a large motor for a small load when the amount of debris is reduced. This allows the device to adjust the pressure according to the amount of debris.

[0026] This invention integrates multiple functions—drilling, bottom cleaning, hole wall gap cleaning, and debris collection and removal—into a single chip-cleaning drill bit mechanism 200. This achieves simultaneous drilling and cleaning, a unified operation that effectively differentiates itself from traditional drill-then-clean, separate equipment operation modes. It forms an innovative operating system by organically integrating the chip-cleaning drill bit mechanism 200, the auxiliary cleaning mechanism 300, and the drive mechanism 400. This allows the entire device to perform traditional drilling tasks and immediately activate the chip-cleaning mode after drilling or during drilling intervals, completing comprehensive cleaning of the borehole interior without equipment replacement or additional intervention. Specifically, the chip-cleaning drill bit mechanism 200 serves as both the drilling tool and the pump that generates negative pressure for chip cleaning. The auxiliary cleaning mechanism 300 is seamlessly integrated into the chip-cleaning drill bit mechanism 200, specifically designed to clean debris from hard-to-reach gaps between the drill bit and the hole wall. The drive mechanism 400 provides power to the entire device and intelligently adjusts the chip-cleaning intensity. In this process, the sealing sleeve 201 serves as both a protective shell housing the drill bit 212's opening and closing linkage mechanism and a pump cylinder forming a variable volume cavity together with the piston 204. The reciprocating motion of the piston 204 drives the cross plate 205 and linkage mechanism to control the opening and closing of the drill bit 212, and also generates negative pressure within the sealing sleeve 201 for suction and discharge, used for cleaning and chip removal, thus simultaneously addressing the two key issues of drill bit movement and chip transport. The cross plate 205 is both the actuator driving the opening and closing of the drill bit 212 and the base for mounting and driving the U-rod 301 in the auxiliary cleaning mechanism 300. When the cross plate 205 moves up and down, it not only controls the extension and retraction of the four drill bits 212, but also synchronously drives the four movable plugs 303 to move within the cylinder 304, thereby achieving synchronous suction and cleaning of chips at the bottom of the hole and in the gaps between the holes, ensuring absolute synchronization and high efficiency of the core chip removal action. During the process, the drive mechanism 400 uses a gear transmission system (such as...) Figure 1 As shown in the figure, it can drive the entire device to rotate for drilling, and when chip removal is required, it can change the initial position of the threaded rod 202 or the threaded sleeve 203 through transmission, thereby intelligently adjusting the effective stroke of the piston 204 and the intensity of the chip removal negative pressure. This allows a single power source to adapt to different geological conditions and chip volume, achieving a balance between energy saving and high efficiency.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A blasting drill for use in mining, characterised in that, Include: Mechanical arm (100) and fixed connection with its bottom vehicle body (101); The mechanism (200) is installed outside the mechanical arm (100), which is used for cleaning the debris in the hole; The auxiliary cleaning mechanism (300) is installed outside the mechanism (200), which is used for cleaning the debris between the mechanism (200) and the hole wall; The driving mechanism (400) is installed outside the mechanical arm (100), which is used for adjusting the pressure of the mechanism (200) and the auxiliary cleaning mechanism (300); The mechanism (200) includes a sealing sleeve (201), the inner cavity of the sealing sleeve (201) is movably connected with a threaded pull rod (202), the outer circle of the threaded pull rod (202) is sleeved with a threaded sleeve (203), the outer circle of the threaded sleeve (203) is fixedly connected with two pistons (204), the threaded pull rod (202) is sleeved with a cross plate (205), the outer circle of the sealing sleeve (201) is fixedly connected with an L rod (206), the outer wall of the L rod (206) and the bottom of the cross plate (205) are respectively fixedly connected with a U-shaped seat one (207) and a U-shaped seat two (208), the inner cavity of the U-shaped seat one (207) is rotatably connected with a rod one (209) through a bearing, the inner cavity of the U-shaped seat two (208) is rotatably connected with two rod twos (210) through a bearing, every two rod twos (210) are rotatably connected with a fixed rod (211) through a bearing, the bottom of the four fixed rods (211) is fixedly connected with a drill bit (212), and every two rod twos (210) and the corresponding rod one (209) are rotatably connected through a bearing.

2. A blast hole drilling apparatus for use in mining according to claim 1 characterised in that: The inner wall of the sealing sleeve (201) is provided with a limiting groove (213) around, one side of the threaded pull rod (202) is fixedly connected with a rotating gear (214), the middle part of the threaded sleeve (203) is provided with a circular hole (215) through, which is matched with the threaded pull rod (202), the top of the cross plate (205) is fixedly connected with a hydraulic cylinder (216), and the outer wall of the threaded sleeve (203) is fixedly connected with a limiting rod (217) matched with the limiting groove (213).

3. A blast hole drilling apparatus for use in mining according to claim 1 characterised in that: The bottom of the sealing sleeve (201) is provided with a chip removal groove on both sides, the inner cavity of the chip removal groove is fixedly connected with a chip removal pipe (218), the inner wall of the chip removal pipe (218) is rotatably connected with a rotating rod (219) through a bearing, the outer circle of the rotating rod (219) is fixedly connected with a cover plate (220), and the inner wall of the chip removal pipe (218) is also fixedly connected with a resisting plate (2201).

4. A blast hole drilling apparatus for use in mining according to claim 1 characterised in that: The bottom of one of the pistons (204) is fixedly connected with a conical ring (221), the inner wall of the conical ring (221) is fixedly connected with a cleaning cone (222) around, the bottom outer circle edge of the conical ring (221) is matched with the inner wall of the sealing sleeve (201), and the gap between the four cleaning cones (222) and the four drill bits (212) corresponds.

5. A blasting drill arrangement for use in mining according to claim 1, characterized in that: The bottom of the sealing sleeve (201) is fixedly connected with a conical cylinder (223) with a conical surface facing the inside of the drill hole, and the outer ring of the conical cylinder (223) is provided with a plurality of notches (224).

6. A blasting drill arrangement for use in mining according to claim 1, characterized in that: The auxiliary cleaning mechanism (300) comprises four U-shaped rods (301) fixedly connected to the bottom of the cross plate (205), the bottom of each U-shaped rod (301) is fixedly connected with a round rod (302), the bottom of each round rod (302) is fixedly connected with a movable plug (303), the outer ring of each movable plug (303) is sleeved with a cylinder (304), and a communication pipe (305) is fixedly sleeved between each of the four cylinders (304) and the sealing sleeve (201).

7. A blast hole drilling apparatus for use in mining according to claim 6 wherein: The bottom of each of the four cylinders (304) is provided with a plurality of inclined grooves (306), which can form an inclined negative pressure channel when the debris between the suction hole wall and the outer wall of the drill bit (212).

8. A blasting drill arrangement for use in mining according to claim 2, characterized in that: The driving mechanism (400) comprises a connecting plate (401) fixedly connected to the mechanical arm (100), the top of the connecting plate (401) is fixedly connected with a rotary driving element (402), the output shaft of the rotary driving element (402) is fixedly connected with the hydraulic cylinder (216) after penetrating through the connecting plate (401), and the outer ring of the output shaft of the rotary driving element (402) is sleeved with a gear A (403).

9. A blasting drill arrangement for use in mining according to claim 8, characterized in that: The bottom of the connecting plate (401) is rotatably connected with two rod bodies (404) through bearings, the bottom of one of the rod bodies (404) is fixedly connected with a gear B (405) engaged with the gear A (403).

10. A blast hole drilling apparatus for use in mining according to claim 9, characterised in that: The outer ring and the bottom of the other rod body (404) are respectively sleeved with a gear C (406) engaged with the gear B (405) and a gear D (407) engaged with the rotating gear (214).

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