Blast hole cleaning device based on deep hole top plate presplitting blasting miss-fire phenomenon

Abstract

The invention discloses a blast hole cleaning device based on a deep hole roof presplitting blasting miss-fire phenomenon, and relates to the technical field of blast hole cleaning, the blast hole cleaning device comprises a cleaning round head, an output shaft body is fixedly connected to the top of the cleaning round head, a contraction protection mechanism is arranged in the cleaning round head, and a bottom cleaning mechanism is arranged at the bottom of the cleaning round head; through the arrangement of the contraction protection mechanism, the protruding scraping plate is in a storage state, and after the cleaning round head is inserted into a blast hole, the protruding scraping plate can be in an unfolding state under the cooperation of a connecting rod and a pressed needle through the resistance of the blast hole, so that the situation that when the cleaning round head stretches into the blast hole, the protruding part of the cleaning head presses down part of protruding stemming, and the cleaning efficiency is improved is avoided. The problem that the stemming is pushed into the bottom of the blast hole is solved, the cleaning difficulty and time cost caused by the fact that the stemming is pushed into the bottom of the blast hole are reduced, the overall operation efficiency is improved, meanwhile, the resistance between the cleaning round head and the blast hole during insertion is reduced, and therefore the insertion process is smoother.

Description

Technical Field

[0001] The present invention relates to the technical field of blast hole cleaning, and specifically to a blast hole cleaning device based on the misfiring phenomenon of deep hole roof pre-splitting blasting. Background Art

[0002] The hard roof refers to the hard rock layer above the coal seam. The control of the hard roof in the working face is of great significance to mining safety. The deep hole roof pre-splitting blasting technology is a technology frequently used in fully mechanized coal mining faces. However, during some blasting operations, there may be non-standard operations, resulting in misfiring phenomena. Therefore, it is necessary to clean the blast holes through a blast hole cleaning device to avoid affecting the next blasting effect.

[0003] In the prior art, a blast hole cleaning device is mostly used to clean the misfired blast holes. The specific operation is to insert a cleaning head adapted to the shape of the blast hole into the blast hole. By rotating the cleaning head and utilizing the uneven characteristics of the outer surface of the cleaning head, the stemming adhered to the hole wall of the blast hole is scraped off. Finally, most of the scraped stemming will fall into the groove in the recessed part of the cleaning head and be taken out of the blast hole together with the cleaning head, completing the cleaning of the blast hole.

[0004] Although the above prior art can solve this problem well, in the actual operation process, since the hole wall of the blast hole after misfiring is uneven and the size of the existing cleaning head is fixed, when the staff inserts the cleaning head into the blast hole, the protruding part of the cleaning head will press down some protruding stemming and push it to the bottom of the blast hole, increasing the difficulty of cleaning the blast hole.

[0005] Therefore, the present invention proposes a blast hole cleaning device based on the misfiring phenomenon of deep hole roof pre-splitting blasting to solve the above problems. Summary of the Invention

[0006] In view of this, the technical problem to be solved by the present invention is to propose a blast hole cleaning device based on the misfiring phenomenon of deep hole roof pre-splitting blasting to solve the problem that when cleaning the blast hole after misfiring occurs in the prior art, the cleaning head easily pushes the protruding stemming on the hole wall to the bottom of the blast hole.

[0007] To achieve the above object, the present invention provides the following technical solution: A blast hole cleaning device based on the misfiring phenomenon of deep hole roof pre-splitting blasting, including a cleaning round head, the top of the cleaning round head is fixedly connected with an output shaft body, a contraction and protection mechanism is arranged inside the cleaning round head, a bottom cleaning mechanism is arranged at the bottom of the cleaning round head, and the contraction and protection mechanism includes a contraction and expansion component and a clamping and protection component;

[0008] The contraction and expansion component includes a pressure needle, the pressure needle is slidably connected through the bottom of the cleaning round head, a return spring is sleeved on the outer surface of the pressure needle, and both ends of the return spring are fixedly connected to the pressure needle and the cleaning round head respectively. A guiding rod body is fixedly connected to the top of the inner wall of the cleaning round head, the guiding rod body is slidably connected to the pressure needle, a plurality of connecting rods are rotatably connected to the outer surface of the pressure needle, a plurality of receiving grooves corresponding to the number of the connecting rods are formed through the cleaning round head, and a convex scraping plate is slidably connected in each receiving groove. The convex scraping plate is rotatably connected to the opposite connecting rod;

[0009] The contraction and expansion component is used to expand or contract the convex scraping plate from the receiving groove, the clamping and protection component is used to fix the pressure needle, the bottom cleaning mechanism is located at the bottom of the contraction and protection mechanism, and the bottom cleaning mechanism is driven by the contraction and protection mechanism.

[0010] Preferably, the connecting rods are inclined. The clamping and protection component includes two sliding blocks, both of the sliding blocks are slidably connected to the top of the pressure needle, two first compression springs are fixedly connected to the top of the pressure needle, one end of each of the two first compression springs is fixedly connected to the sliding block, and the sides of the two sliding blocks away from each other are inclined.

[0011] Preferably, two mounting boxes are fixedly connected to the top of the inner wall of the cleaning round head, the two mounting boxes are respectively located above the two sliding blocks, one ends of the two mounting boxes are respectively located on the rising trajectories of the two sliding blocks, the sides of the two mounting boxes are both arc-shaped, and clamping grooves are formed in the opposite sides of the two mounting boxes. The sliding blocks are inserted into the clamping grooves.

[0012] Preferably, a return push rod is slidably connected in each of the two mounting boxes, one end of the return push rod is located in the clamping groove, the other end of the return push rod penetrates through the mounting box, a second compression spring is sleeved on the outer surface of the return push rod, and the return push rod is slidably connected to the cleaning round head.

[0013] Preferably, a rotating ring body is rotatably connected to the outer surface of the cleaning round head, a plurality of convex strips are fixedly connected to the outer surface of the rotating ring body, and two extrusion grooves are formed in the inner surface of the rotating ring body.

[0014] Preferably, one side of each of the two extrusion grooves is arc-shaped, and the end of the return push rod penetrating through the cleaning round head is spherical.

[0015] Preferably, the spherical end of the return push rod is in contact with the arc-shaped surface of the extrusion groove, and the arc-shaped surface of the extrusion groove can push the return push rod towards the clamping groove when rotating.

[0016] Preferably, the bottom cleaning mechanism includes a plurality of fan-shaped pieces, all of the plurality of fan-shaped pieces are arranged at the bottom of the cleaning round head, sliding column rods are fixedly connected to the tops of all the plurality of fan-shaped pieces, a plurality of sliding grooves are formed at the bottom of the convex scraping plate, and the sliding column rods are slidably connected to the opposite sliding grooves.

[0017] Preferably, first U-shaped boxes are fixedly connected to the bottoms of two of the fan-shaped pieces, a second U-shaped box is fixedly connected to the bottom of the cleaning round head, a sliding U-shaped box is fixedly connected to one side of the second U-shaped box, and the sliding U-shaped box is slidably connected to the first U-shaped box.

[0018] Preferably, the fan-shaped pieces are all located at the bottoms of adjacent convex scraping plates, and inclined surfaces are arranged on one sides of the bottoms of the first U-shaped box, the second U-shaped box and the sliding U-shaped box.

[0019] Compared with the prior art, the present invention provides a hole cleaning device based on the misfiring phenomenon of deep hole roof pre-splitting blasting, and has the following beneficial effects:

[0020] 1. Through the setting of the contraction protection mechanism, when the cleaning round head is inserted into the blast hole, the convex scraping plate is in a retracted state. And after the cleaning round head is inserted into the blast hole, by using the resistance of the blast hole, in cooperation with the connecting rod and the pressure-receiving needle, the convex scraping plate can be in an unfolded state. Furthermore, when the cleaning round head extends into the blast hole, the problem that the convex part of the cleaning head presses down part of the convex blast mud and pushes it into the bottom of the blast hole is avoided, the cleaning difficulty and time cost caused by the blast mud being pushed into the bottom of the blast hole are reduced, the overall operation efficiency is improved. At the same time, the resistance between the cleaning round head and the blast hole during insertion is reduced, so that the insertion process is smoother;

[0021] 2. Through the combined setting of the contraction protection mechanism and the bottom cleaning mechanism, when the cleaning round head cleans the inner surface hole wall of the blast hole, the blast mud at the bottom of the blast hole can be cleaned at the same time, the cleaning range is increased, and the cleaning effect is improved. At the same time, by using the cooperation of the sliding column rod and the sliding groove, when the contraction protection mechanism is unfolded or retracted, the bottom cleaning mechanism can be unfolded and retracted at the same time, without operating the bottom cleaning mechanism separately, saving additional operation time. And by using the operations of unfolding and recycling and resetting, the notch of the receiving groove can scrape and clean the blast mud adhered to the side wall of the convex scraping plate, and the bottom edge of the cleaning round head can scrape and clean the blast mud adhered to the fan-shaped piece. At this time, without the support of the convex scraping plate and the fan-shaped piece, the blast mud is easier to be removed from the surface of the cleaning round head, which is convenient for the subsequent treatment of the blast mud after cleaning;

[0022] 3. Through the setting of the clamping protection component, during the process of the convex scraper unfolding and working, by using the clamping of the sliding block and the clamping groove, the pressure needle no longer moves, so that the cleaning work of the convex scraper is more stable, avoiding the phenomenon of the convex scraper shaking during the cleaning process. And through the setting of the rotating ring body and the extrusion groove body, by simply rotating the rotating ring body, the symmetrically arranged reset push rods can be simultaneously contracted, maintaining consistency and balance during contraction, thereby improving the stability during its reset recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structure diagram of the present invention;

[0024] Figure 2 for the present invention Figure 1 is a cross-sectional structure diagram;

[0025] Figure 3 for the present invention Figure 2 is a partial three-dimensional structure diagram;

[0026] Figure 4 is a cross-sectional structure diagram of the installation box of the present invention;

[0027] Figure 5 for the present invention Figure 4 is an enlarged structure diagram at A in;

[0028] Figure 6 is a three-dimensional structure diagram of the bottom of the cleaning round head of the present invention;

[0029] Figure 7 for the present invention Figure 6 is a partial exploded structure diagram;

[0030] Figure 8 is a three-dimensional structure diagram of the sector piece of the present invention.

[0031] In the figure:

[0032] 1. Cleaning round head; 11. Output shaft body;

[0033] 21. Shrinkage and expansion component; 211. Pressure needle; 212. Return spring; 213. Guide rod body; 214. Connecting rod; 215. Convex scraper; 216. Storage groove;

[0034] 22. Clamping protection component; 221. Sliding block; 222. First compression spring; 223. Installation box; 224. Clamping groove; 225. Reset push rod; 226. Second compression spring; 227. Rotating ring body; 228. Extrusion groove body;

[0035] 311. Sector piece; 312. Sliding column rod; 313. Sliding groove; 314. First U-shaped box body; 315. Second U-shaped box body; 316. Sliding U-shaped box body. Detailed implementation mode

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] The present invention will be further described in detail below according to the drawings and embodiments.

[0038] Embodiments of the present invention

[0039] Please refer to Figures 1 to 8 as shown:

[0040] To solve the problems mentioned in the technical solution, an embodiment of the present application provides a blast hole cleaning device based on the misfire phenomenon of deep hole roof pre-splitting blasting, including a cleaning round head 1. A output shaft body 11 is fixedly connected to the top of the cleaning round head 1. When in use, the output shaft body 11 is connected to the output end of an external driving motor. A contraction protection mechanism is arranged inside the cleaning round head 1, and a bottom cleaning mechanism is arranged at the bottom of the cleaning round head 1. The contraction protection mechanism includes a contraction and expansion component 21 and a clamping protection component 22;

[0041] The contraction and expansion component 21 includes a compression needle 211. The compression needle 211 is slidably connected through the bottom of the cleaning round head 1. A return spring 212 is sleeved on the outer surface of the compression needle 211. Two ends of the return spring 212 are respectively fixedly connected to the compression needle 211 and the cleaning round head 1. A guiding rod body 213 is fixedly connected to the top of the inner wall of the cleaning round head 1. The guiding rod body 213 is slidably connected to the compression needle 211. A plurality of connecting rods 214 are rotatably connected to the outer surface of the compression needle 211. A plurality of receiving grooves 216 corresponding to the number of the connecting rods 214 are penetrated and opened on the cleaning round head 1. A convex scraping plate 215 is slidably connected in each receiving groove 216. The convex scraping plate 215 is rotatably connected to the opposite connecting rod 214;

[0042] The contraction and expansion component 21 is used to expand or contract the convex scraping plate 215 from the receiving groove 216. The clamping protection component 22 is used to fix the compression needle 211. The bottom cleaning mechanism is located at the bottom of the contraction protection mechanism, and the bottom cleaning mechanism is driven by the contraction protection mechanism.

[0043] The connecting rod 214 is inclined, and the clamping protection assembly 22 includes two sliding blocks 221. Both of the two sliding blocks 221 are slidably connected to the top of the pressure needle 211. Two first compression springs 222 are fixedly connected to the top of the pressure needle 211. One end of each of the two first compression springs 222 is fixedly connected to the sliding block 221. The sides of the two sliding blocks 221 away from each other are inclined. Two mounting boxes 223 are fixedly connected to the inner top of the cleaning round head 1. The two mounting boxes 223 are respectively located above the two sliding blocks 221. One ends of the two mounting boxes 223 are respectively located on the rising trajectories of the two sliding blocks 221. One side of each of the two mounting boxes 223 is arc-shaped. Card slots 224 are respectively opened on the opposite sides of the two mounting boxes 223. The sliding block 221 is inserted into the card slot 224.

[0044] A reset push rod 225 is slidably connected in each of the two mounting boxes 223. One end of the reset push rod 225 is located in the card slot 224. The other end of the reset push rod 225 penetrates through the mounting box 223. A second compression spring 226 is sleeved on the outer surface of the reset push rod 225. One end of the second compression spring 226 contacts the boss of the reset push rod 225, and the other end contacts the mounting box 223. The reset push rod 225 is slidably connected to the cleaning round head 1. A rotating ring body 227 is rotatably connected to the outer surface of the cleaning round head 1. A plurality of convex strips are fixedly connected to the outer surface of the rotating ring body 227. Two extrusion grooves 228 are opened on the inner surface of the rotating ring body 227. One side of each of the two extrusion grooves 228 is arc-shaped. One end of the reset push rod 225 penetrating through the cleaning round head 1 is spherical. The spherical end of the reset push rod 225 contacts the arc-shaped surface of the extrusion groove 228. When the arc-shaped surface of the extrusion groove 228 rotates, it can push the reset push rod 225 in the direction of the card slot 224. When the reset push rods 225 approach each other, the second compression spring 226 enters a compressed state. When the sliding block 221 is pushed out of the card slot 224, as the rotating ring body 227 rotates and resets, the second compression spring 226 will also push the reset push rod 225 to reset;

[0045] The implementation of this embodiment makes the cleaning work of the convex scraper 215 more stable, avoids the phenomenon that the convex scraper 215 shakes during the cleaning process, and the gun clay is easier to remove from the surface of the cleaning round head 1, thereby facilitating the subsequent treatment work of the gun clay after cleaning.

[0046] Further embodiment: Please refer to Figures 1 to 8 as shown:

[0047] The bottom cleaning mechanism includes a plurality of fan-shaped pieces 311, the plurality of fan-shaped pieces 311 are all arranged at the bottom of the cleaning round head 1, sliding column rods 312 are fixedly connected to the tops of the plurality of fan-shaped pieces 311, a plurality of sliding grooves 313 are formed at the bottom of the convex scraping plate 215, and the sliding column rods 312 are slidably connected to the opposite sliding grooves 313. First U-shaped boxes 314 are fixedly connected to the bottoms of two of the fan-shaped pieces 311, a second U-shaped box 315 is fixedly connected to the bottom of the cleaning round head 1, a sliding U-shaped box 316 is fixedly connected to one side of the second U-shaped box 315, and the sliding U-shaped box 316 is slidably connected to the first U-shaped box 314. The fan-shaped pieces 311 are all located at the bottom of the adjacent convex scraping plates 215. Bevels are provided on one side of the bottoms of the first U-shaped box 314, the second U-shaped box 315 and the sliding U-shaped box 316.

[0048] The implementation of this embodiment enables the cleaning round head 1 to clean the bottom mud of the blast hole while cleaning the inner surface hole wall of the blast hole, increasing the cleaning range and improving the cleaning effect. At the same time, by using the cooperation of the sliding column rod 312 and the sliding groove 313, when the contraction protection mechanism is deployed or stored, the bottom cleaning mechanism can be deployed and stored simultaneously, without the need to operate the bottom cleaning mechanism separately, saving additional operation time.

[0049] The working principle of all the contents in the above-mentioned embodiment is as follows:

[0050] In the initial state: the convex scraping plate 215 is stored in the storage groove 216, the bottom of the pressure receiving needle 211 is lower than the bottom of the second U-shaped box 315, the return spring 212, the first compression spring 222 and the second compression spring 226 are all in a normal state, and the top of the output shaft body 11 is connected to the output end of an external drive motor.

[0051] When the cleaning round head 1 is in use, the staff can vertically insert the cleaning round head 1 into the blast hole where misfire occurs. When inserting, since the convex scraping plate 215 is stored in the storage groove 216, at this time, neither the outer surface of the cleaning round head 1 nor the outside of the storage groove 216 contacts the hole wall of the blast hole, and its diameter is smaller than the diameter of the blast hole. Therefore, during the process of inserting the cleaning round head 1 into the blast hole, it will not push the protruding mud on the hole wall of the blast hole, and thus the protruding mud on the inner surface of the blast hole will not fall to the bottom of the blast hole, thereby reducing the cleaning difficulty of the bottom of the blast hole;

[0052] Further, after the cleaning round head 1 is inserted into the blast hole, the bottom of the pressure-receiving needle 211 will first contact the bottom of the blast hole. At this time, the cleaning round head 1 continues to move downward, and the pressure-receiving needle 211 is resisted by the bottom of the blast hole, so it begins to slide upward, and the return spring 212 is stretched. At the same time, when the sliding block 221 slides upward, it will generate an upward thrust on the inclined connecting rod 214, causing the bottom end of the connecting rod 214 to move upward and rotate. Furthermore, the other end of the connecting rod 214 simultaneously pushes the protruding scraping plate 215 to slide outward, and finally the protruding scraping plate 215 slides out of the storage groove 216. And when the bottom of the pressure-receiving needle 211 is flush with the bottom of the second U-shaped box body 315, the cleaning round head 1 completes the insertion into the blast hole. At this time, the protruding scraping plate 215 slides out of the storage groove 216, and its side abuts against the inner surface hole wall of the blast hole;

[0053] In addition, during the upward sliding of the pressure-receiving needle 211, the sliding block 221 is driven to move upward at the same time. Since one end of the installation box 223 is located on the upward movement track of the sliding block 221, when the sliding block 221 approaches the installation box 223, the bottom arc surface of the installation box 223 will push the inclined surface of the sliding block 221, causing the sliding block 221 to move in the direction of the first compression spring 222, and the first compression spring 222 is compressed. As the sliding block 221 moves upward, when the sliding block 221 and the card slot 224 are on the same horizontal plane, at this time the installation box 223 no longer blocks the sliding block 221. Under the rebound push of the first compression spring 222, the sliding block 221 is inserted into the card slot 224. At this time, the bottom plane of the sliding block 221 is blocked by the card slot 224, making the pressure-receiving needle 211 unable to slide downward. Furthermore, when the bottom of the pressure-receiving needle 211 is flush with the bottom of the second U-shaped box body 315, after the cleaning round head 1 completes the insertion into the blast hole, through the insertion connection between the card slot 224 and the sliding block 221, the pressure-receiving needle 211 can be fixed to ensure the stability of the protruding scraping plate 215 after it is unfolded;

[0054] Furthermore, when the convex scraper 215 unfolds, it will drive the fan-shaped piece 311 to unfold outward at the same time. During the unfolding process, since the convex scrapers 215 are arranged in a fan shape, when the convex scrapers 215 slide outward, the distance between the adjacent convex scrapers 215 on one side will increase, so that the sliding column rod 312 will slide in the sliding groove 313, thus ensuring the smoothness when the convex scraper 215 and the fan-shaped piece 311 unfold outward at the same time. And when the fan-shaped piece 311 moves outward, it will drive the first U-shaped box body 314 to move outward at the same time, making the sliding U-shaped box body 316 slide in the first U-shaped box body 314. When the bottom of the pressure needle 211 is flush with the bottom of the second U-shaped box body 315, after the cleaning round head 1 is inserted into the blast hole, the fan-shaped piece 311 can block the space at the bottom of the convex scraper 215, so that after the convex scraper 215 finishes scraping the stemming, under the block of the fan-shaped piece 311, part of the stemming will not fall into the bottom of the blast hole from between the second U-shaped box bodies 315;

[0055] After the cleaning round head 1 is inserted, the external drive motor can be started. The motor can drive the cleaning round head 1 to rotate through the output shaft body 11. When rotating, the convex scraper 215 can scrape the stemming on the outer surface hole wall of the blast hole. The stemming can fall into the space between the convex scrapers 215 from the hole wall through the scraping of the convex scraper 215, and finally the residual stemming on the hole wall of the blast hole is cleaned. At the same time, when the cleaning round head 1 rotates, the inclined surfaces on one side of the bottoms of the first U-shaped box body 314, the second U-shaped box body 315 and the sliding U-shaped box body 316 will also scrape the stemming at the bottom of the blast hole, and through the thrust generated by the rotation, the scraped stemming can enter the interiors of the first U-shaped box body 314, the second U-shaped box body 315 and the sliding U-shaped box body 316 along the inclined surfaces, thus completing the cleaning and collection of the stemming at the bottom of the blast hole;

[0056] After the cleaning of the round head 1 is completed, the staff can pull out the cleaning round head 1 from the blast hole. Blocked by the sector piece 311, the scraped blast mud is located between the second U-shaped box body 315 and the top of the sector piece 311, and the blast mud at the bottom of the blast hole is located in the U-shaped groove of the first U-shaped box body 314. After taking it out, the staff can manually rotate the rotating ring body 227. The rotation of the rotating ring body 227 drives the arc surface of the extrusion groove body 228 to push the spherical surface of the reset push rod 225 to move. Under the extrusion of the arc surface, the reset push rod 225 can be pushed to slide towards the sliding block 221, thereby pushing the sliding block 221 out of the insertion connection with the card slot 224. At this time, the bottom plane of the sliding block 221 is no longer blocked by the card slot 224. Under the resilience of the reset spring 212, the sliding block 221 is pulled to slide downward, so that the sliding block 221 moves downward and resets. At the same time, under the action of the connecting rod 214, the convex scraping plate 215 is pulled back into the storage groove 216 to complete the reset. During storage, the notch of the storage groove 216 can scrape and clean the blast mud adhered to the side wall of the convex scraping plate 215, and the bottom of the cleaning round head 1 can scrape and clean the blast mud adhered to the sector piece 311. At this time, without the support of the convex scraping plate 215 and the sector piece 311, the blast mud is easier to be taken out from the surface of the cleaning round head 1, thus facilitating the cleaning and treatment of the blast mud after cleaning.

[0057] Through the setting of the contraction protection mechanism, when the cleaning round head 1 is inserted into the blast hole, the convex scraping plate 215 is in a storage state. And after the cleaning round head 1 is inserted into the blast hole, using the resistance of the blast hole, under the cooperation of the connecting rod 214 and the pressure receiving needle 211, the convex scraping plate 215 can be in an unfolded state, thus avoiding the problem that when the cleaning round head 1 extends into the blast hole, the convex part of the cleaning head presses down part of the convex blast mud and pushes it into the bottom of the blast hole, reducing the cleaning difficulty and time cost caused by the blast mud being pushed into the bottom of the blast hole, improving the overall operation efficiency. At the same time, the resistance between the cleaning round head 1 and the blast hole during insertion is reduced, making its insertion process smoother;

[0058] And through the combined setting of the contraction protection mechanism and the bottom cleaning mechanism, when the cleaning round head 1 cleans the inner surface hole wall of the blast hole, the blast mud at the bottom of the blast hole can be cleaned at the same time, increasing the cleaning range and improving the cleaning effect. At the same time, using the cooperation of the sliding column rod 312 and the sliding groove 313, when the contraction protection mechanism unfolds or stores, the bottom cleaning mechanism can be unfolded and stored at the same time, without the need to operate the bottom cleaning mechanism separately, saving additional operation time. And using the operations of unfolding and recycling and resetting, the notch of the storage groove 216 can scrape and clean the blast mud adhered to the side wall of the convex scraping plate 215, and the bottom edge of the cleaning round head 1 can scrape and clean the blast mud adhered to the sector piece 311. At this time, without the support of the convex scraping plate 215 and the sector piece 311, the blast mud is easier to be removed from the surface of the cleaning round head 1, thus facilitating the subsequent treatment work of the blast mud after cleaning;

[0059] Moreover, through the setting of the clamping protection component 22, during the process of the convex scraper 215 unfolding and working, by means of the clamping of the sliding clamping block 221 and the clamping groove 224, the pressure receiving needle 211 is no longer moved, so that the cleaning work of the convex scraper 215 is more stable, avoiding the phenomenon of shaking of the convex scraper 215 during the cleaning process. And through the setting of the rotating ring body 227 and the extrusion groove body 228, by simply rotating the rotating ring body 227, the symmetrically arranged reset push rods 225 can be simultaneously contracted, maintaining consistency and balance during the contraction, thereby improving the stability during its reset recovery.

[0060] Please refer to the above working process Figures 1 to 8 。

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0062] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blasthole cleaning device based on the deep hole roof pre-splitting blasting refusal phenomenon, comprising a cleaning round head (1), the top of which is fixedly connected to an output shaft (11), characterized in that: A contraction protection mechanism is provided inside the cleaning round head (1), a bottom cleaning mechanism is provided at the bottom of the cleaning round head (1), and the contraction protection mechanism comprises a contraction and expansion component (21) and a clamping protection component (22); The contraction and expansion assembly (21) comprises a pressure needle (211), the pressure needle (211) penetrates and is slidably connected to the bottom of the cleaning round head (1), a return spring (212) is sleeved on the outer surface of the pressure needle (211), and the two ends of the return spring (212) are respectively fixedly connected to the pressure needle (211) and the cleaning round head (1), a guide rod body (213) is fixedly connected to the top of the inner wall of the cleaning round head (1), and the guide rod body (213) is slidably connected to the pressure needle (211), and a plurality of connecting rods (214) are rotatably connected to the outer surface of the pressure needle (211), and the cleaning round head (1) is penetrated and provided with a corresponding number of receiving grooves (216) to the connecting rods (214), and each of the receiving grooves (216) is slidably connected to a protruding scraper (215), and the protruding scraper (215) is rotatably connected to the corresponding connecting rod (214); The contraction and expansion assembly (21) is used to expand or contract the raised scraper (215) from the storage groove (216); the clamping protection assembly (22) is used to fix the pressure-receiving needle (211); the bottom cleaning mechanism is located at the bottom of the contraction protection mechanism, and the bottom cleaning mechanism is driven by the contraction protection mechanism.

2. A blasthole cleaning device based on the deep hole roof pre-splitting blasting explosion rejection phenomenon according to claim 1, characterized in that: The connecting rod (214) is tilted, and the clamping protection assembly (22) includes two sliding blocks (221). The two sliding blocks (221) are both slidably connected to the top of the pressure-receiving needle (211). The top of the pressure-receiving needle (211) is fixedly connected with two first compression springs (222), one end of the two first compression springs (222) is fixedly connected to the sliding block (221), and the two sliding blocks (221) are tilted on the side away from each other.

3. A blasthole cleaning device based on the deep hole roof pre-splitting blasting refusal phenomenon according to claim 2, characterized in that: Two installation boxes (223) are fixedly connected to the top of the inner wall of the cleaning round head (1); the two installation boxes (223) are respectively located above the two sliding blocks (221); one end of the two installation boxes (223) is respectively located on the rising track of the two sliding blocks (221); one side of the two installation boxes (223) is arranged in an arc shape; a card slot (224) is provided on the opposite side of the two installation boxes (223); and the sliding blocks (221) are plugged into the card slot (224).

4. A blasthole cleaning device based on the deep hole roof pre-splitting blasting explosion rejection phenomenon according to claim 3, characterized in that: A reset push rod (225) is slidably connected in both installation boxes (223), one end of the reset push rod (225) is located in the slot (224), and the other end of the reset push rod (225) passes through the installation box (223). A second compression spring (226) is sleeved on the outer surface of the reset push rod (225), and the reset push rod (225) is slidably connected to the cleaning round head (1).

5. A blasthole cleaning device based on the deep hole roof pre-splitting blasting explosion rejection phenomenon according to claim 4, characterized in that: The outer surface of the cleaning round head (1) is rotatably connected to a rotating ring body (227), the outer surface of the rotating ring body (227) is fixedly connected to a plurality of convex strips, and the inner surface of the rotating ring body (227) is provided with two extrusion grooves (228).

6. A blasthole cleaning device based on the deep hole roof pre-splitting blasting explosion rejection phenomenon according to claim 5, characterized in that: One side of the two extrusion grooves (228) is configured to be arc-shaped, and one end of the reset push rod (225) that passes through the cleaning round head (1) is configured to be spherical.

7. A blasthole cleaning device based on the deep hole roof pre-splitting blasting explosion rejection phenomenon according to claim 6, characterized in that: The spherical end of the reset push rod (225) contacts the arcuate surface of the extrusion groove body (228), and the arcuate surface of the extrusion groove body (228) can push the reset push rod (225) to move in the direction of the clamping groove (224) when rotating.

8. The blasthole cleaning device based on the deep hole roof pre-splitting blasting refusal phenomenon according to claim 1 is characterized by: The bottom cleaning mechanism comprises a plurality of fan-shaped pieces (311), each of which is arranged at the bottom of the cleaning round head (1), and each of which is fixedly connected to a sliding column rod (312) at the top thereof, and a plurality of sliding grooves (313) are provided at the bottom of the raised scraper (215), and the sliding column rod (312) is slidably connected to the corresponding sliding grooves (313).

9. A blasthole cleaning device based on the deep hole roof pre-splitting blasting explosion rejection phenomenon according to claim 8, characterized in that: The bottoms of the two sector pieces (311) are fixedly connected to a first U-shaped box body (314), the bottom of the cleaning round head (1) is fixedly connected to a second U-shaped box body (315), one side of the second U-shaped box body (315) is fixedly connected to a sliding U-shaped box body (316), and the sliding U-shaped box body (316) is slidably connected to the first U-shaped box body (314).

10. A blasthole cleaning device based on the deep hole roof pre-splitting blasting explosion rejection phenomenon according to claim 9, characterized in that: The sector pieces (311) are all located at the bottom of adjacent raised scrapers (215), and one side of the bottom of the first U-shaped box body (314), the second U-shaped box body (315) and the sliding U-shaped box body (316) are all provided with an inclined surface.

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