CN110196004B - Open-air deep hole blasting safety monitoring device - Google Patents
Open-air deep hole blasting safety monitoring device Download PDFInfo
- Publication number
- CN110196004B CN110196004B CN201910518934.7A CN201910518934A CN110196004B CN 110196004 B CN110196004 B CN 110196004B CN 201910518934 A CN201910518934 A CN 201910518934A CN 110196004 B CN110196004 B CN 110196004B
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- groove
- plate
- monitoring device
- safety monitoring
- mounting bracket
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- 238000005422 blasting Methods 0.000 title claims abstract description 30
- 238000012806 monitoring device Methods 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 239000004744 fabric Substances 0.000 claims abstract description 22
- 210000001503 joint Anatomy 0.000 claims abstract description 9
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 10
- 238000003032 molecular docking Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Clamps And Clips (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to the technical field of monitoring devices, in particular to an open-air deep hole blasting safety monitoring device which comprises a mounting frame, wherein a clamping plate is arranged on the inner wall of the mounting frame, a protective strip is arranged on the surface of the clamping plate, a butt joint groove is formed in the surface of the mounting frame, a mounting plate is in butt joint with the inside of the butt joint groove, a camera is fixed on the surface of the mounting plate, a placing groove is formed in the surface of the mounting frame, a shielding cloth is adhered to the surface of the placing groove, the other end of the shielding cloth is adhered to the surface of a sealing plate, a telescopic rod groove is formed in the surface of the placing groove, a sleeve is arranged in the telescopic rod groove, and a plugging rod is arranged in the sleeve; the beneficial effects are as follows: according to the open-air deep hole blasting safety monitoring device provided by the invention, the shielding cloth is additionally arranged in the placing groove formed in the surface of the mounting frame, the shielding cloth can be used for shielding the wind and rain of the camera after being pulled out, and the placing groove is blocked by the sealing plate after the shielding cloth is stored.
Description
Technical Field
The invention relates to the technical field of monitoring devices, in particular to a safety monitoring device for open-air deep hole blasting.
Background
The damage of instability and damage of a side slope of the open-air deep hole blasting is serious, in the open-air deep hole blasting, unloading relaxation can occur on the rock mass of the side slope, the weak surface of the rock mass is easy to induce to break, the collapse or landslide of soil layers, soft rock mass and uneven rock mass of the side slope can be caused, and in hard rock mass of the side slope, dangerous rock and falling rock are mainly produced, so that the stability of the side slope is greatly influenced;
at present, along with the rapid development of economy in China, each place is in the acceleration of foundation construction in the place, artificial slopes formed by partial open-air mountain stripping gradually move to the edges of towns and villages of resident gathering places, so that the blasting environment is more and more complex, the blasting hazard risk is continuously increased, the rolling stone hazard of high-steep slope blasting is one of main hazard factors, if the high-steep slope blasting rolling stone cannot be effectively controlled, the safety accidents of the high-steep slope blasting rolling stone are easily caused, and the life and property safety of surrounding residents are endangered; often, a protective structure is supported around the side slope, but only has a retaining effect, and the field condition of the side slope cannot be obtained in time; therefore, the invention provides an open-air deep hole blasting safety monitoring device for solving the problems.
Disclosure of Invention
The invention aims to provide an open-air deep hole blasting safety monitoring device which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an open-air deep hole blasting safety monitoring device, includes the mounting bracket, be provided with the grip block on the inner wall of mounting bracket, the surface of grip block is provided with the protection strip, and the surface of mounting bracket is provided with the butt joint groove, the inside butt joint of butt joint groove has the mounting panel, the fixed surface of mounting panel has the camera, and the standing groove has been seted up on the surface of mounting bracket, the surface bonding of standing groove has shielding cloth, shielding cloth's the other end bonding on the surface of shrouding, and the telescopic link groove has been seted up on the surface of standing groove, the inside of telescopic link groove is provided with the sleeve pipe, the inside of sleeve pipe is provided with the plug rod, the surface of plug rod is provided with the spring bolt, the spring bolt is connected with the locating hole cooperation, the locating hole is seted up on sheathed tube surface, and the surface of mounting bracket is provided with the baffle, and the surface of mounting bracket is provided with the locating part, and the surface of shrouding is provided with the pull ring, the surface of mounting bracket is provided with buffer spring, buffer spring's other end is fixed on the surface of wave blocking plate, the surface of wave blocking plate is provided with the backplate.
Preferably, the mounting frame is of a platy structure with an end face in a shape of , the clamping plates are of square platy structures, two clamping plates are arranged, the two clamping plates are symmetrically distributed about the center of the short side of the mounting frame, and the clamping plates are obliquely arranged.
Preferably, the surface of the butt joint groove is provided with a locking screw hole, the surface of the mounting plate is provided with a locking screw rod, and the locking screw rod is connected in a matched mode in the locking screw hole.
Preferably, the standing groove and the sealing plate are both in a -shaped structure, the telescopic rod grooves are in a circular cylinder structure, the two telescopic rod grooves are symmetrically distributed about the center of the long side of the mounting frame, the sleeve is in an inside hollow circular cylinder structure, the inserting rod is in a T-shaped circular cylinder structure, the surface of the inserting rod is provided with a hidden hole, the spring bolt is in the inside of the hidden hole, and the end part of the pin head of the spring bolt is in a round table structure.
Preferably, the baffle is square platy structure, and the baffle is provided with two sets of baffles, and two sets of baffles are fixed respectively on the inner ring face of shrouding and the outer ring face of shrouding, and the baffle prevents that the shrouding from getting into the standing groove completely.
Preferably, the locating part includes anti-drop board and locating screw, and locating screw spiro union is on the surface of mounting bracket, and anti-drop board connects the tip at locating screw, and the locating part is provided with two, and two locating parts are spacing to two perpendicular limits of shrouding respectively, and the pull ring is fixed on the horizontal edge of shrouding.
Preferably, the wave guard plate is of a rectangular plate-shaped structure, the containment guard plate is of a square plate-shaped structure, the length of the long side of the containment guard plate is larger than that of the buffer spring in an initial state, four containment guard plates are arranged, and the four containment guard plates are respectively distributed on the four sides of the wave guard plate.
Compared with the prior art, the invention has the beneficial effects that:
1. the open-air deep hole blasting safety monitoring device provided by the invention is buckled at the upper end of the side slope enclosure structure through the mounting frame matched with the clamping plate, so that a tool is not required to be used for punching during installation, the loading and unloading are simple and convenient, and the construction efficiency is improved;
2. according to the open-air deep hole blasting safety monitoring device, the shielding cloth is additionally arranged in the placing groove formed in the surface of the mounting frame, the shielding cloth can be used for shielding wind and rain for the camera after being pulled out, and the placing groove is blocked by the sealing plate after the shielding cloth is stored;
3. according to the open-air deep hole blasting safety monitoring device, the wave blocking plate is additionally arranged on the surface, close to the blasting area, of the mounting frame, and the wave blocking plate is used for blocking air waves generated by blasting of the mounting frame, so that the mounting frame is prevented from vibrating a camera.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded view of the connecting structure of the shielding cloth and the sealing plate of the present invention;
FIG. 3 is a schematic view of the connection structure of the sleeve and the plug rod according to the present invention;
FIG. 4 is a schematic view of a limiting member according to the present invention;
FIG. 5 is an enlarged schematic view of the structure shown in FIG. 3A;
FIG. 6 is a schematic view of the structure of the mounting frame of the present invention.
In the figure: the device comprises a mounting frame 1, a clamping plate 2, a protective strip 3, a butt joint groove 4, a mounting plate 5, a camera 6, a placing groove 7, shielding cloth 8, a sealing plate 9, a telescopic rod groove 10, a sleeve 11, a plugging rod 12, a spring bolt 13, a positioning hole 14, a baffle 15, a limiting piece 16, a pull ring 17, a wave baffle 18, a buffer spring 19 and a containment plate 20.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides an open-air deep hole blasting safety monitoring device, including mounting bracket 1, the welding has grip block 2 on the inner wall of mounting bracket 1, mounting bracket 1 is the platy structure of terminal surface "" font, grip block 2 is square platy structure, grip block 2 is provided with two, two grip block 2 are about the minor face central symmetry of mounting bracket 1, and grip block 2 slope setting, the surface bonding of grip block 2 has protection strip 3, stir the bottom of grip block 2 to the inner wall of mounting bracket 1, detain mounting bracket 1 on side slope envelope's top, two grip block 2 clamp side slope envelope, protection strip 3 increase grip block 2 and side slope envelope's friction, so mounting bracket 1 is simple swift;
the surface of the mounting frame 1 is provided with a docking groove 4, the inside of the docking groove 4 is docked with a mounting plate 5, the surface of the docking groove 4 is provided with a locking screw, the surface of the mounting plate 5 is provided with a locking screw, the locking screw is connected in a matched manner in the locking screw, the surface of the mounting plate 5 is adhered with a camera 6, the mounting plate 5 provided with the camera 6 (model DS-2CE16F5P-IT 5) is docked in the docking groove 4, and then the mounting plate 5 is fixed in the docking groove 4 by means of the locking screw;
the surface of the mounting frame 1 is provided with a placing groove 7, the surface of the placing groove 7 is adhered with shielding cloth 8, the other end of the shielding cloth 8 is adhered to the surface of the sealing plate 9, the surface of the placing groove 7 is provided with a telescopic rod groove 10, the inside of the telescopic rod groove 10 is adhered with a sleeve 11, the inside of the sleeve 11 is plugged with a plugging rod 12, the surface of the plugging rod 12 is provided with a spring plug 13, the spring plug 13 is matched and connected with a positioning hole 14, the positioning hole 14 is formed in the surface of the sleeve 11, the placing groove 7 and the sealing plate 9 are both in a -shaped structure, the telescopic rod groove 10 is in a circular cylinder structure, the telescopic rod grooves 10 are provided with two telescopic rod grooves, the two telescopic rod grooves 10 are symmetrically distributed in the center of the long edge of the mounting frame 1, the sleeve 11 is in a circular cylinder structure with the inside hollow, the plugging rod 12 is in a T-shaped circular cylinder structure, the surface of the plugging rod 12 is provided with a hidden hole, the spring plug 13 is in the hidden hole, the pin end of the spring plug 13 is in a round table-shaped structure, the pull ring 17 is held by a hand to pull the sealing plate 9, the sealing plate 9 is pulled out of the placing groove 7, the shielding cloth 8 is pulled out from the placing groove 7, the shielding cloth 8 is pulled out of the surface of the placing groove 7 from the placing groove 7, and simultaneously the plugging rod 12 is pulled out of the sealing plate 8 along the plug 12 to the surface of the sealing plate 8, and the sealing plate 8 is folded along the sealing plate 8, and the sealing plate 8 is not in the sealing plate 8, and the sealing plate is folded to be in the position of the sealing plate 8, when the sealing plate 8 is in the sealing hole 7, and the sealing hole is folded to be in the sealing surface is in the sealing hole 7;
the baffle 15 is adhered to the surface of the sealing plate 9, the baffle 15 is of a square plate-shaped structure, the baffle 15 is provided with two groups, the two groups of baffles 15 are respectively fixed on the inner annular surface of the sealing plate 9 and the outer annular surface of the sealing plate 9, the baffle 15 prevents the sealing plate 9 from completely entering the placing groove 7, the baffle 15 is clamped at the outer side of the placing groove 7, and the sealing plate 9 is prevented from completely entering the placing groove 7;
the surface of the mounting frame 1 is provided with limiting pieces 16, each limiting piece 16 comprises an anti-falling plate and a positioning screw rod, the positioning screw rods are in threaded connection with the surface of the mounting frame 1, the anti-falling plates are connected to the end parts of the positioning screw rods, the two limiting pieces 16 are arranged, the two limiting pieces 16 are used for limiting two vertical edges of the sealing plate 9 respectively, the pull ring 17 is adhered to the horizontal edge of the sealing plate 9, the limiting pieces 16 are used for limiting the sealing plate 9, and the sealing plate 9 is prevented from falling off from the placing groove 7;
the surface welding of mounting bracket 1 has buffer spring 19, buffer spring 19's the other end welding is on the surface of wave shield 18, wave shield 18's surface welding has containment board 20, wave shield 18 is rectangular platy structure, containment board 20 is square platy structure, containment board 20's length on the long side is greater than buffer spring 19 initial condition under length, containment board 20 is provided with four, four containment boards 20 distribute respectively on four edges of wave shield 18, wave shield 18 is towards the blasting district, the air wave that the 19 degree blasting of wave shield 18 cooperation buffer spring produced shelters from, reduce the injury of air wave to camera 6, containment board 20 plays spacing effect to wave shield 18 and avoids wave shield 18 to fall down the swing before buffer spring 19.
Working principle: in actual operation, the mounting plate 5 provided with the camera 6 (the model is DS-2CE16F5P-IT 5) is butted in the butting groove 4, then the mounting plate 5 is fixed in the butting groove 4 by means of the locking screw, then the bottom ends of the clamping plates 2 are poked to the inner wall of the mounting frame 1, the mounting frame 1 is buckled at the top end of the side slope building, the two clamping plates 2 clamp the side slope building, the protection strip 3 increases the friction between the clamping plates 2 and the side slope building, the mounting frame 1 is installed simply and quickly, the limiting piece 16 is poked by hand, the anti-falling plate of the limiting piece 16 is rotated by 90 degrees, then the sealing plate 9 is pulled out of the placing groove 7 by holding the pull ring 17, the shielding cloth 8 is pulled out of the placing groove 7, meanwhile, the inserting rod 12 slides outwards along the sleeve 11, until the spring bolt 13 on the surface of the plugging rod 12 is clamped in the positioning hole 14 on the surface of the sleeve 11, at this moment, the shielding cloth 8 shields the camera 6 from wind and rain, when not in use, the shielding cloth 8 is retracted into the placing groove 7, the shielding cloth 8 is foldable, then the sealing plate 9 is butted at the opening of the placing groove 7, the baffle 15 is clamped at the outer side of the placing groove 7, the sealing plate 9 is prevented from completely entering the placing groove 7, then the limiting piece 16 is rotated by 90 degrees, the limiting piece 16 limits the sealing plate 9, the sealing plate 9 is prevented from falling off from the placing groove 7, the sleeve 11 is matched with the plugging rod 12 to play a supporting role on the sealing plate 9, the wave baffle 18 faces towards a blasting area, the wave baffle 18 is matched with air wave generated by the buffer spring 19 degree blasting, the damage of the air wave to the camera 6 is reduced, the wave baffle 18 is prevented from falling and swinging in front of the buffer spring 19 by the limiting role of the surrounding plate 20.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an open-air deep hole blasting safety monitoring device, includes mounting bracket (1), its characterized in that: the utility model discloses a buffer structure, including mounting bracket (1) and spring mounting bracket (9), mounting bracket (1) is provided with grip block (2) on the inner wall, the surface of grip block (2) is provided with protection bar (3), and the surface of mounting bracket (1) is provided with docking groove (4), docking inside of docking groove (4) has mounting panel (5), the fixed surface of mounting panel (5) has camera (6), and standing groove (7) have been seted up on the surface of mounting bracket (1), the surface bonding of standing groove (7) has shelter from cloth (8), shelter from the other end bonding of cloth (8) on the surface of shrouding (9), and the surface of standing groove (7) has seted up telescopic rod groove (10), the inside of telescopic rod groove (10) is provided with sleeve (11), the inside of sleeve (11) is provided with plug rod (12), the surface of plug rod (12) is provided with spring bolt (13), spring bolt (13) are connected with locating hole (14) cooperation, locating hole (14) are seted up on the surface of sleeve (11), and the surface of shrouding (9) is provided with shielding plate (15), and surface (1) is provided with buffer structure (19) of surface (19), the other end of the buffer spring (19) is fixed on the surface of the wave baffle plate (18), and a containment plate (20) is arranged on the surface of the wave baffle plate (18);
the mounting frame (1) is of a platy structure with an end face in a shape of , the clamping plates (2) are of a square platy structure, two clamping plates (2) are arranged, the two clamping plates (2) are symmetrically distributed about the center of the short side of the mounting frame (1), and the clamping plates (2) are obliquely arranged;
the surface of butt joint groove (4) has seted up the locking screw, and the surface of mounting panel (5) is provided with locking screw, and locking screw cooperation is connected in the inside of locking screw.
2. The surface deep hole blasting safety monitoring device according to claim 1, wherein: the utility model discloses a telescopic rod for the automobile, including standing groove (7) and shrouding (9), standing groove (7) and shrouding (9) are "" font structure, and telescopic rod groove (10) are circular cylinder structure, and telescopic rod groove (10) are provided with two, and two telescopic rod grooves (10) are about the long limit central symmetry distribution of mounting bracket (1), and sleeve pipe (11) are inside hollow circular cylinder structure, and plug rod (12) are "T" font circular cylinder structure, and hidden hole has been seted up on the surface of plug rod (12), and spring bolt (13) are in the inside of hiding the hole, and the round platform shape structure is at the round platform tip of spring bolt (13).
3. The surface deep hole blasting safety monitoring device according to claim 1, wherein: the baffle (15) is square platy structure, and baffle (15) are provided with two sets of baffles, and two sets of baffles (15) are fixed respectively on the interior anchor ring of shrouding (9) and the outer anchor ring of shrouding (9), and baffle (15) prevent shrouding (9) from getting into standing groove (7) completely.
4. The surface deep hole blasting safety monitoring device according to claim 1, wherein: the limiting parts (16) comprise anti-falling plates and positioning screws, the positioning screws are in threaded connection on the surface of the mounting frame (1), the anti-falling plates are connected to the end parts of the positioning screws, the limiting parts (16) are arranged in two, the two limiting parts (16) are respectively used for limiting two vertical edges of the sealing plate (9), and the pull ring (17) is fixed on the horizontal edge of the sealing plate (9).
5. The surface deep hole blasting safety monitoring device according to claim 1, wherein: the wave baffle plate (18) is of a rectangular plate-shaped structure, the containment plates (20) are of square plate-shaped structures, the length of the long sides of the containment plates (20) is larger than that of the buffer springs (19) in an initial state, the containment plates (20) are provided with four, and the four containment plates (20) are respectively distributed on the four sides of the wave baffle plate (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910518934.7A CN110196004B (en) | 2019-06-16 | 2019-06-16 | Open-air deep hole blasting safety monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910518934.7A CN110196004B (en) | 2019-06-16 | 2019-06-16 | Open-air deep hole blasting safety monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110196004A CN110196004A (en) | 2019-09-03 |
| CN110196004B true CN110196004B (en) | 2024-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910518934.7A Active CN110196004B (en) | 2019-06-16 | 2019-06-16 | Open-air deep hole blasting safety monitoring device |
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| Country | Link |
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| CN (1) | CN110196004B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579950A (en) * | 2020-05-28 | 2020-08-25 | 中山市惠丰达电气设备有限公司 | Ultrasonic partial discharge diagnostic system |
| CN113766104B (en) * | 2021-07-28 | 2023-08-18 | 广西电网有限责任公司电力科学研究院 | Rain-proof visual monitoring transmission line crossing span device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2006235872A1 (en) * | 2006-11-06 | 2008-05-22 | Leica Geosystems Pty Ltd | Blast movement monitor |
| KR20120018408A (en) * | 2010-08-23 | 2012-03-05 | 주식회사 서광이엔씨 | Blast hole down-drilling device for backhoe |
| CN104296658A (en) * | 2014-10-11 | 2015-01-21 | 三峡大学 | Stone wall blasthole detecting and positioning device based on virtual binocular vision and positioning method |
| CN108426497A (en) * | 2018-05-30 | 2018-08-21 | 安徽中金立华矿业工程有限公司 | A kind of directional blasting explosion pipe fixing device |
| CN210119174U (en) * | 2019-06-16 | 2020-02-28 | 保利民爆哈密有限公司 | Open-air deep hole blasting safety monitoring device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8820242B2 (en) * | 2012-03-20 | 2014-09-02 | Brent Dee Alexander | Hot hole charge system |
-
2019
- 2019-06-16 CN CN201910518934.7A patent/CN110196004B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2006235872A1 (en) * | 2006-11-06 | 2008-05-22 | Leica Geosystems Pty Ltd | Blast movement monitor |
| KR20120018408A (en) * | 2010-08-23 | 2012-03-05 | 주식회사 서광이엔씨 | Blast hole down-drilling device for backhoe |
| CN104296658A (en) * | 2014-10-11 | 2015-01-21 | 三峡大学 | Stone wall blasthole detecting and positioning device based on virtual binocular vision and positioning method |
| CN108426497A (en) * | 2018-05-30 | 2018-08-21 | 安徽中金立华矿业工程有限公司 | A kind of directional blasting explosion pipe fixing device |
| CN210119174U (en) * | 2019-06-16 | 2020-02-28 | 保利民爆哈密有限公司 | Open-air deep hole blasting safety monitoring device |
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| Publication number | Publication date |
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| CN110196004A (en) | 2019-09-03 |
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