A drilling device for open pit blasting

Abstract

The present application relates to the technical field of mine machinery, specifically is a kind of open-pit mining blasting drilling device, including drilling unit unit, dust cover is installed on drilling unit unit by connecting frame, the inside upper side of dust cover is installed with protection unit, and cleaning unit is installed on protection unit;The present application can clean the rock debris and dust when the rock debris and dust are blown out from the blasting hole, so that the rock debris and dust discharged from the blasting hole can be synchronously blown into the dust collection pipeline, to prevent the ground near the blasting hole after drilling from accumulating rock debris and dust, thereby preventing the accumulated rock debris from falling back into the blasting hole under the action of gravity, ensuring subsequent blasting effect;Meanwhile, the present application can buffer the rock debris and dust blown out from the blasting hole, reduce the impact force of rock debris, thereby ensuring the service life of dust cover.

Description

Technical Field

[0001] This invention relates to the field of mining machinery technology, specifically to an open-pit mining blasting drilling device. Background Technology

[0002] In open-pit mining of mineral resources, blasting is the core technology for efficiently stripping surface overburden and mining underground ore bodies. The prerequisite and key step for blasting is to pre-drill blasting holes at the mining face and fill them with explosives before carrying out the blasting operation. The quality of the drilling directly determines the uniformity of the distribution of explosives in the rock mass, which in turn affects the blasting effect, the accuracy of the excavation outline, and the safety of the operation.

[0003] Currently, down-the-hole (DH) drills are commonly used in open-pit mining blasting drilling operations. These drills primarily consist of an impact mechanism and a drilling tool mechanism. During drilling, the impact mechanism uses compressed air to drive the drill bit in the drilling tool mechanism to impact and break the rock mass. Simultaneously, the drill bit rotates synchronously, enabling drilling operations. The drilling process generates a large amount of rock cuttings and dust. To remove these materials from the blast hole, high-pressure gas is typically used to blow them upwards from the bottom of the hole along the hole wall. Simultaneously, a dust collection hood is installed on the drilling tool mechanism to collect the rock cuttings and dust discharged from the blast hole. Under the action of high-pressure airflow, the rock cuttings and dust are blown into the dust collection pipeline and then into the dust removal equipment, preventing them from escaping into the surrounding air. Since blasting drilling involves dense drilling, requiring multiple boreholes within a certain area, the dust hood primarily prevents drilled debris from falling into adjacent boreholes.

[0004] The following problems exist in current open-pit blasting drilling operations: Although high-pressure gas can blow rock cuttings and dust out of the blast hole, some of the blown rock cuttings and dust will accumulate on the ground near the blast hole. When the drill bit is removed from the blast hole, the accumulated rock cuttings are prone to fall back into the blast hole under the action of gravity, thus affecting the subsequent blasting effect. In addition, when high-pressure gas carries rock cuttings and dust out of the blast hole at high speed, the rock cuttings and dust will directly hit the inner wall of the dust collection hood with high impact force, causing severe wear on the inner wall of the dust collection hood and thus shortening its service life. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an open-pit blasting drilling device, comprising a drilling tool unit, a dust collection hood mounted on the drilling tool unit via a connecting frame, a protective unit mounted on the upper side inside the dust collection hood, and a cleaning unit mounted on the protective unit; the protective unit includes a conical seat mounted inside the dust collection hood via an active component, the conical end of the conical seat facing downwards, and a protective ring slidably mounted on its conical structure via a buffer spring rod, the protective ring buffering the impact of rock cuttings and dust when they are blown out from the blast hole; the cleaning unit includes multiple circumferentially evenly arranged cleaning plates distributed at the lower end inside the dust collection hood, with the upper ends of the multiple cleaning plates and the conical seat connected... A cooperating assembly is installed together. A lever plate is hinged to the side of the sweeping plate near its rotation direction, and the hinge point between the lever plate and the sweeping plate is located on the side of the sweeping plate away from the center of the dust collection hood. A top extension spring connects the lever plate and the sweeping plate. A cleaning block is slidably installed on the lower end of the sweeping plate via an electric slider assembly. The sweeping plate drives the lever plate to rotate, causing the lever plate to sweep the rock cuttings and dust near the blast hole to the edge of the dust collection hood. At the same time, the cooperating assembly drives the lever plate to push the rock cuttings and dust away from the center of the dust collection hood, so as to quickly sweep the rock cuttings and dust to the edge of the dust collection hood. The cleaning block assists in cleaning the rock cuttings and dust on the ground, ensuring that the rock cuttings and dust will not fall back into the blast hole after drilling is completed.

[0006] Preferably, a triangular baffle is fixedly installed on the side of the sweeping plate near its rotation direction, and the baffle is located on the side of the sweeping plate near the middle of the dust collection hood. The lever is configured as an elastic telescopic structure and its telescopic section contacts the baffle.

[0007] Preferably, the mating assembly includes a transmission ring fixedly installed at the lower end of the conical seat via a connecting rod, and the lower end of the transmission ring is fixedly connected to the middle of the upper end of the cleaning plate.

[0008] Preferably, a mating block is fixedly installed on the upper end of the dial plate, and a mating plate corresponding to the cleaning plate is radially slidably installed on the transmission ring. The mating block is located on the side opposite to the rotation direction of the mating plate and the cleaning plate. An inclined surface that mates with the mating block is opened on the side of the mating plate near the middle of the dust collection hood, and the inclined surface of the mating plate is in contact with the mating block.

[0009] Preferably, a plurality of circumferentially evenly arranged pushing blocks are fixedly installed on the inner side of the dust collection hood. The pushing blocks are provided with inclined grooves. The inclined grooves of the pushing blocks cooperate with the side of the mating plate away from the center of the dust collection hood, so that the paddle moves the rock chips and dust away from the center of the dust collection hood.

[0010] Preferably, the cleaning plate has a square groove at its lower end, the electric slider assembly is installed in the square groove, and an elastic transmission rod is installed at the lower end of the electric slider assembly. The lower end of the elastic transmission rod is fixedly connected to the upper end of the cleaning block.

[0011] Preferably, the square groove is provided with a spiral groove, and the side of the spiral groove near the middle of the dust collection hood is inclined. A sliding block is slidably installed in the spiral groove, and the sliding block is fixedly connected to the telescopic section of the elastic transmission rod. When the cleaning block moves to a position near the middle of the dust collection hood, the inclined section of the spiral groove can cooperate with the sliding block to make the cleaning block located below the cleaning plate.

[0012] Preferably, an elastic limiting rod is installed in the square groove at the position corresponding to the inclined section of the spiral groove. The telescopic section of the elastic limiting rod is set as a triangle. The elastic limiting rod can cooperate with the sliding block to make the sliding block move unidirectionally along the spiral trajectory in the spiral groove.

[0013] Preferably, a square plate is fixedly installed on the upper end of the cleaning plate on the side away from the center of the dust collection hood, and an arc-shaped scraper is fixedly installed on the upper end of the square plate, with the arc-shaped surface of the arc-shaped scraper on the side away from the center of the dust collection hood in contact with the inner wall of the dust collection hood.

[0014] Preferably, the protective ring is cone-shaped, so that rock chips and dust can move along the cone-shaped surface of the protective ring to the edge of the dust collection hood under the action of wind, and the cleaning plate is inclined to the side away from the middle of the dust collection hood and to the side opposite to the rotation direction of the cleaning plate.

[0015] The beneficial effects of this invention are as follows: First, this invention can clean up rock cuttings and dust as they are blown out of the blast hole, so that the rock cuttings and dust discharged from the blast hole can be blown into the dust collection pipeline simultaneously, preventing the accumulation of rock cuttings and dust on the ground near the blast hole after drilling, thereby preventing the accumulated rock cuttings from falling back into the blast hole under gravity and ensuring the subsequent blasting effect; at the same time, this invention can buffer the rock cuttings and dust blown out of the blast hole, reducing the impact force of the rock cuttings, thereby ensuring the service life of the dust collection hood.

[0016] Second, the sweeping plate of the present invention drives the deflector plate to rotate continuously, so that rock chips and dust can move away from the center of the dust collection hood under the action of the deflector plate. At the same time, the cooperating assembly first drives the deflector plate to rotate towards the sweeping plate with the hinge of the deflector plate and the sweeping plate as the reference. Then, the deflector plate rebounds quickly under the action of the top extension spring, and the deflector plate pushes the rock chips and dust away from the center of the dust collection hood, thereby enabling rapid sweeping of rock chips and dust on the ground near the blast hole.

[0017] Third, the protective ring of the present invention can buffer the rock chips and dust blown out from the blast hole under the action of the buffer spring rod, thereby reducing the impact force of the rock chips and ensuring the service life of the dust collection hood. In addition, some rock chips and dust can move along the conical surface of the protective ring to the edge of the dust collection hood under the action of wind, thereby preventing a large amount of rock chips and dust from falling to the ground near the blast hole.

[0018] Fourth, the cleaning block of the present invention can simultaneously scrape away rock debris and dust on the ground below the cleaning plate in a direction away from the blast hole, thereby working with the cleaning plate to ensure thorough cleaning of rock debris and dust on the ground near the blast hole, so that the rock debris and dust discharged from the blast hole can be simultaneously blown into the dust collection pipe under the action of high-pressure airflow. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is a three-dimensional structural diagram of the protective unit and cleaning unit after removing parts of the connecting frame and dust collection cover according to the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the cleaning unit after removing parts of the dust collection cover and protective unit according to the present invention.

[0023] Figure 4 This is a top view of the dust collection hood after part of it has been cut out.

[0024] Figure 5 This is a three-dimensional structural diagram of the electric slider assembly, elastic transmission rod, and cleaning block after the cleaning plate has been partially removed, according to the present invention.

[0025] Figure 6 This is a state diagram of the slider of the present invention when it is in the initial position.

[0026] Reference numerals: 1. Drilling tool unit; 11. Connecting frame; 2. Dust collection hood; 21. Pushing block; 3. Protective unit; 31. Driving component; 32. Conical seat; 33. Buffer spring rod; 34. Protective ring; 4. Cleaning unit; 41. Cleaning plate; 411. Baffle; 412. U-shaped groove; 413. Sliding block; 414. Square plate; 415. Arc-shaped scraper; 416. Elastic limit rod; 42. Mating assembly; 421. Connecting rod; 422. Transmission ring; 423. Mating plate; 43. Pulley; 431. Mating block; 44. Top extension spring; 45. Electric slider assembly; 451. Elastic transmission rod; 46. Cleaning block. Detailed Implementation

[0027] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where no specific technology or conditions are specified in the embodiments, they shall be performed in accordance with the technology or conditions described in the literature in the field or in accordance with the product manual.

[0028] See Figure 1 and Figure 2An open-pit blasting drilling device includes a drilling unit 1. A dust collection hood 2 is installed on the drilling unit 1 via a connecting frame 11. A protective unit 3 is installed on the upper side inside the dust collection hood 2, and a cleaning unit 4 is installed on the protective unit 3. The height of the dust collection hood 2 can be adjusted by the connecting frame 11 so that the dust collection hood 2 covers the ground at the drilling location. The dust collection hood 2 and the drill bit of the drilling unit 1 are arranged coaxially so that when the drill bit is performing drilling operations, the dust collection hood 2 can collect the rock cuttings and dust blown out of the blast hole. High-pressure gas blows the rock cuttings and dust through the dust collection hood 2 into the dust collection pipeline and into the external dust removal equipment.

[0029] It should be noted that the drilling operation of drilling unit 1 is existing technology, and its working principle, control method and structural setting are the same as existing technology, so it will not be described again in this invention.

[0030] See Figure 1 , Figure 2 and Figure 3 The protective unit 3 includes a conical seat 32 installed inside the dust collection hood 2 via an active component 31. The conical end of the conical seat 32 faces downward, and a protective ring 34 is slidably mounted on its conical structure via a buffer spring rod 33. The active component 31 includes a transmission cylinder fixedly mounted on the conical seat 32, and the transmission cylinder is rotatably connected to the dust collection hood 2. The upper end of the transmission cylinder is connected to the output shaft of a drive motor fixedly mounted on a connecting frame 11 via a pulley assembly. The protective unit 3 can buffer the rock chips and dust blown out from the blast hole, reduce the impact force of the rock chips, and thus ensure the service life of the dust collection hood 2.

[0031] See Figure 3 , Figure 4 and Figure 5 The cleaning unit 4 includes multiple circumferentially evenly arranged cleaning plates 41 distributed inside the lower end of the dust collection hood 2. The upper ends of the multiple cleaning plates 41 and the conical seat 32 are jointly installed with a mating assembly 42. A lever plate 43 is hinged to the side of the cleaning plate 41 near its rotation direction, and the hinge point between the lever plate 43 and the cleaning plate 41 is located on the side of the cleaning plate 41 away from the middle of the dust collection hood 2. A top extension spring 44 is connected between the lever plate 43 and the cleaning plate 41. A cleaning block 46 is slidably installed on the lower end of the cleaning plate 41 through an electric slider assembly 45. The cleaning unit 4 can clean up rock cuttings and dust as they are blown out of the blast hole, so that the rock cuttings and dust discharged from the blast hole can be blown into the dust collection pipe at the same time, preventing the accumulation of rock cuttings and dust on the ground near the blast hole after drilling, thereby preventing the accumulated rock cuttings from falling back into the blast hole under the action of gravity, ensuring the subsequent blasting effect. In addition, the cleaning unit 4 cleans the rock cuttings and dust by pushing them away from the center of the dust collection hood 2, so as to achieve rapid cleaning of rock cuttings and dust.

[0032] Specifically, when blasting drilling operations are required in open-pit mining, the control drill unit 1, via the connecting frame 11, drives the dust collection hood 2 to cover the ground at the drilling location. Then, the drill unit 1 is started to perform drilling operations. When the drill unit 1 blows rock cuttings and dust out of the blast hole using high-pressure gas, the high-pressure gas drives the rock cuttings and dust upwards and impacts the protective ring 34. The protective ring 34, under the action of the buffer spring rod 33, buffers the rock cuttings and dust. At the same time, the driving component 31 is activated to drive the conical seat 32 to rotate. Figure 2 (Arrow direction) The conical seat 32 drives the cleaning plate 41 to rotate through the mating assembly 42. The cleaning plate 41 drives the lever 43 to rotate, so that the rock chips and dust move away from the center of the dust collection hood 2 under the action of the lever 43.

[0033] Simultaneously, the cooperating group 42 drives the deflector 43 to rotate towards the cleaning plate 41 with the hinge point of the deflector 43 and the cleaning plate 41 as the reference, and compresses the top extension spring 44 to accumulate elastic potential energy. Then, the cooperating group 42 releases the deflector 43. Under the action of the elastic potential energy of the top extension spring 44, the deflector 43 moves the rock debris and dust away from the center of the dust collection hood 2, thereby enabling rapid cleaning of rock debris and dust on the ground near the blast hole.

[0034] By activating the electric slider assembly 45, the cleaning block 46 is driven to move back and forth along the length of the cleaning plate 41, so that the cleaning block 46 simultaneously scrapes away the rock debris and dust on the ground below the cleaning plate 41 in a direction away from the blast hole. This, together with the cleaning plate 41, ensures that the rock debris and dust on the ground near the blast hole are thoroughly cleaned. The rock debris and dust discharged from the blast hole can be blown into the dust collection pipe under the action of high-pressure airflow, and then enter the external dust removal equipment. When the drilling is completed, the drilling unit 1 is controlled to remove the blast hole, thus completing the open-pit mining blasting drilling operation.

[0035] To ensure simultaneous and rapid removal of rock cuttings and dust, this invention employs the following structure: (See attached diagram) Figure 3 and Figure 4 The protective ring 34 is set in a cone shape, so that some rock chips and dust can move along the cone-shaped surface of the protective ring 34 to the edge of the dust collection hood 2 under the action of wind. Thus, when rock chips and dust are blown out from the blast hole, a large amount of rock chips and dust is prevented from falling to the ground near the blast hole. The side of the sweeping plate 41 away from the middle of the dust collection hood 2 is tilted to the side opposite to the rotation direction of the sweeping plate 41, so that the rock chips and dust move quickly away from the blast hole under the pushing action of the push plate 43.

[0036] To prevent rock cuttings and dust from falling into the blast hole during cleaning, this invention employs the following structure: (See attached diagram) Figure 4A triangular baffle 411 is fixedly installed on the side of the sweeping plate 41 near its rotation direction, and the baffle 411 is located on the side of the sweeping plate 41 near the middle of the dust collection hood 2. The lever 43 is set as an elastic telescopic structure and its telescopic section contacts the baffle 411; when the sweeping plate 41 drives the lever 43 to rotate ( Figure 4 (Arrow direction), the cleaning plate 41 drives the baffle 411 to rotate, and the triangular structure of the baffle 411 can first clear the blast hole ( Figure 4 Rock debris and dust near the dotted line area are pushed away from the blast hole, and the baffle 411 prevents the rock debris and dust from falling into the blast hole.

[0037] See Figure 2 , Figure 3 and Figure 4 The mating assembly 42 includes a transmission ring 422 fixedly installed at the lower end of the conical seat 32 via a connecting rod 421. The lower end of the transmission ring 422 is fixedly connected to the upper middle part of the cleaning plate 41. A mating block 431 is fixedly installed at the upper end of the lever plate 43. A mating plate 423 corresponding to the cleaning plate 41 is radially slidably installed on the transmission ring 422. The mating block 431 is located on the side opposite to the rotation direction of the mating plate 423 and the cleaning plate 41. The mating plate 423 has an inclined surface that mates with the mating block 431 on the side near the middle of the dust collection hood 2, and the inclined surface of the mating plate 423 contacts the mating block 431. A plurality of circumferentially evenly arranged pushing blocks 21 are fixedly installed on the inner side of the dust collection hood 2. Inclined grooves are opened on the pushing blocks 21.

[0038] Specifically, when the driving member 31 drives the conical seat 32 to rotate, the conical seat 32 drives the cleaning plate 41 to rotate through the connecting rod 421 and the transmission ring 422. When the transmission ring 422 drives the mating plate 423 to rotate until it contacts the inclined surface of the pushing block 21 and continues to rotate, the inclined surface of the pushing block 21 pushes the mating plate 423 to move towards the middle of the dust collection hood 2. The inclined surface of the mating plate 423 pushes the mating block 431 to move, so that the mating block 431 drives the pawl 43 to rotate towards the cleaning plate 41 with the hinge point of the pawl 43 and the cleaning plate 41 as the reference. When the pushing block 21 and the mating plate 423 separate, the pawl 43, under the action of the top extension spring 44, moves the rock chips and dust away from the middle of the dust collection hood 2. There are multiple pushing blocks 21, so that the pawl 43 continuously moves the rock chips and dust.

[0039] To ensure the effective removal of rock debris and dust from the ground below the sweeping plate 41 by the cleaning block 46, the present invention employs the following structure: (See attached diagram) Figure 5 and Figure 6The cleaning plate 41 has a square groove at its lower end. The electric slider assembly 45 is installed in the square groove. An elastic transmission rod 451 is installed at the lower end of the electric slider assembly 45. The lower end of the elastic transmission rod 451 is fixedly connected to the upper end of the cleaning block 46. A loop groove 412 is provided in the square groove. The side of the loop groove 412 near the middle of the dust collection hood 2 is inclined. A sliding block 413 is slidably installed in the loop groove 412. The sliding block 413 is fixedly connected to the telescopic section of the elastic transmission rod 451. An elastic limiting rod 416 is installed in the square groove at the position corresponding to the inclined section of the loop groove 412. The telescopic section of the elastic limiting rod 416 is set as a triangle.

[0040] Specifically, initially, the cleaning block 46 is located near the middle of the dust collection hood 2. At this time, the cleaning block 46 is below the sweeping plate 41, and the elastic transmission rod 451 is in a stretched state. The electric slider assembly 45 is activated, which drives the cleaning block 46 to move away from the middle of the dust collection hood 2 through the elastic transmission rod 451. This causes the cleaning block 46 to scrape away the rock debris and dust on the ground below the sweeping plate 41. At the same time, the elastic transmission rod 451 drives the sliding block 413 to move in the horizontal section of the lower side of the groove 412. When the sliding block 413 moves to the corresponding position in the vertical section of the groove 412, the sliding block 413 moves upward under the action of the elastic transmission rod 451, causing the elastic transmission rod 451 to drive the cleaning block 46 into the square groove.

[0041] Then, the electric slider assembly 45 drives the cleaning block 46 to move towards the side closer to the center of the dust collection hood 2 via the elastic transmission rod 451. Since the cleaning block 46 is located in the square groove, it will not carry rock chips and dust towards the side closer to the center of the dust collection hood 2. When the elastic transmission rod 451 drives the sliding block 413 to move to the inclined section of the loop groove 412 and continues to move, the sliding block 413, under the action of the inclined section of the loop groove 412, drives the telescopic section of the elastic transmission rod 451 to move downward, so that the elastic transmission rod 451 drives the cleaning block 46 to move below the sweeping plate 41. The sliding block 413 moves to the elastic limit rod 416. When in the correct position, the sliding block 413 can push the triangular inclined surface of the telescopic section of the elastic limit rod 416, causing the sliding block 413 to move from the inclined section of the loop groove 412 to the horizontal section below the loop groove 412. When the electric slider assembly 45 drives the cleaning block 46 to move away from the middle of the dust collection hood 2 through the elastic transmission rod 451, under the action of the elastic limit rod 416, the sliding block 413 moves along the horizontal section below the loop groove 412, so that when the cleaning block 46 moves away from the middle of the dust collection hood 2, it can scrape off rock chips and dust again, thereby ensuring that the rock chips and dust on the ground below the sweeping plate 41 are thoroughly cleaned.

[0042] The present invention adopts the following structure, see below. Figure 3A square plate 414 is fixedly installed on the upper end of the cleaning plate 41 away from the middle of the dust collection hood 2. An arc-shaped scraper 415 is fixedly installed on the upper end of the square plate 414, and the arc-shaped surface of the arc-shaped scraper 415 away from the middle of the dust collection hood 2 contacts the inner wall of the dust collection hood 2. When the cleaning plate 41 rotates, the cleaning plate 41 drives the arc-shaped scraper 415 to rotate through the square plate 414, so that the arc-shaped scraper 415 can scrape away the rock debris and dust accumulated on the inner wall of the dust collection hood 2.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0044] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An open-pit mining blasting drilling device, comprising a drilling unit, wherein a dust collection hood is mounted on the drilling unit via a connecting frame, characterized in that, A protective unit is installed on the upper side inside the dust collection hood, and a cleaning unit is installed on the protective unit; The protective unit includes a conical seat installed inside the dust collection hood via an active component. The conical end of the conical seat faces downward, and a protective ring is slidably installed on its conical structure via a buffer spring rod. When rock cuttings and dust are blown out from the blast hole, the protective ring can buffer the impact of the rock cuttings and dust. The active component includes a transmission cylinder fixedly installed on the conical seat, and the transmission cylinder is rotatably connected to the dust collection hood. The upper end of the transmission cylinder is connected to the output shaft of a drive motor fixedly installed on a connecting frame via a pulley assembly. The cleaning unit includes multiple circumferentially evenly arranged cleaning plates distributed inside the lower end of the dust collection hood. The upper ends of the multiple cleaning plates and the conical seat are jointly installed with a mating assembly. A lever plate is hinged to the side of the cleaning plate near its rotation direction, and the hinge point between the lever plate and the cleaning plate is located on the side of the cleaning plate away from the middle of the dust collection hood. A top extension spring is connected between the lever plate and the cleaning plate. A cleaning block is slidably installed on the lower end of the cleaning plate through an electric slider assembly. The drilling unit is started to perform drilling operations. When the drilling unit blows rock cuttings and dust out of the blast hole using high-pressure gas, the high-pressure gas drives the rock cuttings and dust upward and impacts the protective ring. The protective ring buffers the rock cuttings and dust under the action of the buffer spring rod. At the same time, the active component is started to drive the conical seat to rotate. The conical seat drives the cleaning plate to rotate through the cooperating assembly. The cleaning plate drives the deflector plate to rotate, so that the deflector plate sweeps the rock cuttings and dust near the blast hole to the edge of the dust collection hood. At the same time, the cooperating assembly drives the deflector plate to push the rock cuttings and dust away from the center of the dust collection hood, so as to quickly sweep the rock cuttings and dust to the edge of the dust collection hood. The cleaning block is used to assist in cleaning the rock cuttings and dust on the ground, ensuring that the rock cuttings and dust will not fall back into the blast hole after the drilling is completed.

2. The open-pit mining blasting drilling device according to claim 1, characterized in that, A triangular baffle is fixedly installed on the side of the sweeping plate near its rotation direction, and the baffle is located on the side of the sweeping plate near the middle of the dust collection hood. The lever is set as an elastic telescopic structure and its telescopic section contacts the baffle.

3. The open-pit mining blasting drilling device according to claim 1, characterized in that, The assembly includes a transmission ring fixedly installed at the lower end of the conical seat via a connecting rod, with the lower end of the transmission ring fixedly connected to the middle of the upper end of the cleaning plate.

4. The open-pit mining blasting drilling device according to claim 3, characterized in that, A mating block is fixedly installed on the upper end of the dial plate, and a mating plate corresponding to the cleaning plate is radially slidably installed on the transmission ring. The mating block is located on the side opposite to the rotation direction of the mating plate and the cleaning plate. An inclined surface that mates with the mating block is opened on the side of the mating plate near the middle of the dust collection hood, and the inclined surface of the mating plate is in contact with the mating block.

5. The open-pit mining blasting drilling device according to claim 4, characterized in that, Multiple circumferentially evenly arranged pushing blocks are fixedly installed inside the dust collection hood. The pushing blocks are provided with inclined grooves. The inclined grooves of the pushing blocks cooperate with the side of the mating plate away from the center of the dust collection hood, so that the paddle moves the rock chips and dust away from the center of the dust collection hood.

6. The open-pit mining blasting drilling device according to claim 1, characterized in that, The cleaning plate has a square groove at its lower end, and the electric slider assembly is installed in the square groove. An elastic transmission rod is installed at the lower end of the electric slider assembly, and the lower end of the elastic transmission rod is fixedly connected to the upper end of the cleaning block.

7. The open-pit mining blasting drilling device according to claim 6, characterized in that, The square groove is provided with a spiral groove. The spiral groove is inclined on the side near the middle of the dust collection hood. A sliding block is slidably installed in the spiral groove, and the sliding block is fixedly connected to the telescopic section of the elastic transmission rod. When the cleaning block moves to the position near the middle of the dust collection hood, the inclined section of the spiral groove can cooperate with the sliding block to make the cleaning block located below the cleaning plate.

8. The open-pit mining blasting drilling device according to claim 7, characterized in that, An elastic limiting rod is installed at the position corresponding to the inclined section of the spiral groove inside the square groove. The telescopic section of the elastic limiting rod is set as a triangle. The elastic limiting rod can cooperate with the sliding block to make the sliding block move unidirectionally along the spiral trajectory inside the spiral groove.

9. The open-pit mining blasting drilling device according to claim 1, characterized in that, A square plate is fixedly installed on the upper side of the cleaning plate away from the middle of the dust collection hood. An arc-shaped scraper is fixedly installed on the upper side of the square plate, and the arc-shaped surface of the arc-shaped scraper away from the middle of the dust collection hood is in contact with the inner wall of the dust collection hood.

10. The open-pit mining blasting drilling device according to claim 1, characterized in that, The protective ring is cone-shaped, allowing rock chips and dust to move along the cone-shaped surface of the protective ring to the edge of the dust collection hood under the action of wind. The cleaning plate is tilted to the side away from the middle of the dust collection hood and to the side opposite to the direction of rotation of the cleaning plate.

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