CN112934773A - Diversified monitoring devices based on prospect engineering - Google Patents
Diversified monitoring devices based on prospect engineering Download PDFInfo
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- CN112934773A CN112934773A CN202110226351.4A CN202110226351A CN112934773A CN 112934773 A CN112934773 A CN 112934773A CN 202110226351 A CN202110226351 A CN 202110226351A CN 112934773 A CN112934773 A CN 112934773A
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- main body
- rods
- body box
- monitoring device
- plates
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 28
- 238000003825 pressing Methods 0.000 claims description 38
- 238000007789 sealing Methods 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims 7
- 239000000428 dust Substances 0.000 abstract description 19
- 238000007790 scraping Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 238000005553 drilling Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 241000826860 Trapezium Species 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
- B08B17/04—Preventing deposition of fouling or of dust by using removable coverings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a multidirectional monitoring device based on an exploration engineering, relates to the technical field of monitoring equipment, and solves the problem that when the existing monitoring device is used, dust in air in a mine easily blocks a hole for air intake, so that the device cannot monitor gas in the mine. The multidirectional monitoring device based on the prospecting engineering comprises a main body box, a connecting rod and a scraper plate, wherein two ejector rods are symmetrically arranged at the top of the main body box, and a top frame is arranged at the tops of the two ejector rods and is of a square structure; a rotating roller is rotatably arranged on the two ejector rods, and a bevel gear is arranged on the rotating roller and is meshed with a bevel gear at the front end of a motor on the main box; the left and right sides of main part case all is provided with a set of baffle, and all slidable mounting has a department scraper blade in every group baffle. The two groups of baffles are scraped with dust by the two scraping plates, so that the two groups of air inlet grooves are prevented from being blocked due to excessive dust.
Description
Technical Field
The invention relates to the technical field of monitoring equipment, in particular to a multidirectional monitoring device based on an ore exploration engineering.
Background
Prospecting engineering, also sometimes referred to as exploration technology, generally refers to engineering technology generally involved in geological exploration operations. Besides two main aspects of drilling and pit exploration, other projects which must be carried out for completing geological exploration, such as transportation, repair and repair business, power supply and distribution and the like, also belong to the category of prospecting projects. The drilling engineering is divided into geological exploration drilling and engineering technology drilling. The former uses drilling equipment to drill through rock stratum at a preset place according to geological design to obtain physical data such as rock sample, water sample, soil sample and the like, and carries out underground physical measurement or underground water dynamic observation and the like through drilling, and the former is widely applied to geological exploration.
For example, patent No. CN110173304A discloses an intelligent mine safety monitoring device, which comprises a mine monitoring device main body, a case, an alarm lamp and a monitoring device, wherein the monitoring device is fixedly installed at the other side of the mine monitoring device main body, a detection port is fixedly installed at the bottom of the mine monitoring device main body, a waiting motor is fixedly installed in the mine monitoring device main body, a vibration detector is fixedly installed at one side of the waiting motor, an oxygen detector is fixedly installed below the vibration detector, the case is fixedly installed at the top of the mine monitoring device main body, and a heat dissipation port is fixedly arranged on the outer surface of the case, through the arranged oxygen detector and the detection port, the gas flow in the mine flows in through the detection port, the gas is detected through the oxygen detector, the proportion of oxygen contained in the gas is detected, and the oxygen content of the gas under-mine gas is ensured, when the monitoring device is used, the proportion of oxygen in the mine can be effectively monitored.
The existing monitoring device can monitor gas in a mine generally when being used, so that holes for enabling air to enter the device can be formed, more dust can be doped in the air in the mine generally, the dust easily blocks the holes for air admission, and therefore the device cannot monitor the gas in the mine, oxygen concentration in the mine cannot be timely conveyed to the device, and safety accidents are caused.
Disclosure of Invention
The invention aims to provide a multidirectional monitoring device based on an exploration engineering, and aims to solve the problem that when the existing monitoring device provided in the background technology is used, dust in air in a mine easily blocks a hole for air inlet, so that the device cannot monitor gas in the mine.
In order to achieve the purpose, the invention provides the following technical scheme: the multidirectional monitoring device based on the prospecting engineering comprises a main body box, wherein the main body box comprises a mandril, a top frame, a supporting frame, an alarm and a gas sensor, the main body box is of a rectangular structure, a motor is arranged on the rear side of the top of the main body box, and a bevel gear is arranged at the front end of the motor; the top of the main body box is symmetrically provided with two ejector rods, and the tops of the two ejector rods are provided with a top frame which is in a square structure; the top of the top frame is provided with a support frame which is of a trapezoidal structure; an alarm is arranged in the top frame, and a switch is arranged at the top of the alarm; the top end in the main body box is provided with a gas sensor, and the bottom end in the main body box is provided with a cylinder; a rotating roller is rotatably arranged on the two ejector rods, and a bevel gear is arranged on the rotating roller and is meshed with a bevel gear at the front end of a motor on the main box; a group of guide plates are arranged on the left side and the right side of the main body box, and a scraper plate is slidably arranged in each group of guide plates; two air inlet grooves are formed in the left side and the right side of the interior of the main box; two groups of cross rods are arranged inside the main box, and two sealing plates are sleeved on each group of cross rods in a sliding manner; the top of the supporting frame is provided with a sliding chute, and two mounting sliding blocks are arranged in the sliding chute through springs; a pressing rod is slidably inserted in the middle of the top frame; the bottom of the main body box is provided with four travelling wheels.
Preferably, the rotary roller comprises a rotary table, outer rods and a connecting rod, the rotary table is arranged at each of the left end and the right end of the rotary roller, and the outer rods are arranged at the outer sides of the two rotary tables; the outer sides of the tail ends of the two outer rods are rotatably provided with a connecting rod, and the other ends of the two connecting rods are connected with the outer side of one scraper through bearings.
Preferably, the baffle includes the smooth roller, everywhere the baffle is the U-shaped structure, and the outside of everywhere baffle has all been seted up one and has been located the outer groove, and this all rotates in the outer groove of everywhere and installs one row of smooth roller.
Preferably, the scrapers comprise inner grooves and cleaning rollers, the two scrapers are of a trapezoidal structure, one inner groove is formed in each of the inner sides of the two scrapers, and the three cleaning rollers are rotatably mounted in each of the two inner grooves.
Preferably, the air inlet groove comprises baffles, the air inlet grooves at four positions are of a rectangular structure, and the baffles are arranged at the outer ends of the air inlet grooves at four positions; and a group of filtering holes are formed in the four baffles.
Preferably, the sealing plate comprises a spreader bar and push plates, the inner bottoms of the four sealing plates are respectively rotatably provided with one spreader bar, and the other ends of the four spreader bars are provided with one push plate through bearings; the bottom of the push plate is connected with the top of the cylinder in the main box.
Preferably, the mounting sliding blocks comprise pressing rods and supporting plates, one pressing rod is rotatably mounted at the top of each of the two mounting sliding blocks, and one supporting plate is mounted at the other end of each of the two pressing rods through a bearing; the supporting plate is of an arc-shaped structure.
Preferably, the pressing rod comprises a baffle disc and a pressing block, the pressing block is arranged at the top end of the pressing rod, and the pressing block is of a triangular structure; a stop disc is arranged on the circumferential outer wall of the pressing rod, and a spring is arranged between the bottom of the stop disc and the top of the top frame.
Compared with the prior art, the invention has the beneficial effects that:
1. the two crank sliding block mechanisms are formed by the two turntables, the two outer rods, the two connecting rods and the two scrapers, the rotating roller is driven by the motor under the action of the bevel gear to drive the mechanism to work, the two scrapers in the mechanism move up and down along the two guide plates, and dust attached to the two groups of baffles is scraped by the trapezoidal structures of the two scrapers in the moving process, so that the problem that the two groups of air inlet grooves are blocked due to excessive dust, gas cannot enter the main box, and a gas sensor cannot monitor the gas is avoided.
2. The invention prevents dust from entering the main box by blocking the dust through the two baffles. Influence gas sensor's use, and when need not monitor gas, push up the push pedal through the cylinder, make the push pedal push up the one end of pushing away four spreader bars to make the other end of four spreader bars expand to the outside and prop up four closing plates, make four closing plates shelter from four air inlet ducts, and then better prevent that the dust from entering into in the main part case.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic view of a half-section structure of the main body case of the present invention;
FIG. 4 is a schematic view of a roller and structure of the present invention;
FIG. 5 is a schematic view of the structure of the guide plate and the slide roller of the present invention;
FIG. 6 is a schematic view of a half-section of the squeegee according to the present invention;
FIG. 7 is a schematic view of the structure of the mounting block and the support plate of the present invention;
FIG. 8 is a schematic view of the structure of the pressing rod and the pressing block according to the present invention;
in the figure: 1. a main body case; 101. a top rod; 102. a top frame; 103. a support frame; 104. an alarm; 105. a gas sensor; 2. rotating the roller; 201. a turntable; 202. an outer rod; 203. a connecting rod; 3. a guide plate; 301. a sliding roller; 4. a squeegee; 401. an inner tank; 402. cleaning the roller; 5. an air inlet groove; 501. a baffle plate; 6. a sealing plate; 601. expanding the rod; 602. pushing the plate; 7. installing a sliding block; 701. a pressure lever; 702. a support plate; 8. a pressing rod; 801. a catch tray; 802. and (7) briquetting.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 8, an embodiment of the present invention includes: the multidirectional monitoring device based on the mineral exploration engineering comprises a main body box 1, wherein the main body box 1 comprises a mandril 101, a top frame 102, a supporting frame 103, an alarm 104 and a gas sensor 105, the main body box 1 is of a rectangular structure, a motor is arranged on the rear side of the top of the main body box 1, and a bevel gear is arranged at the front end of the motor; the top of the main body box 1 is symmetrically provided with two ejector rods 101, the tops of the two ejector rods 101 are provided with a top frame 102, and the top frame 102 is in a square structure; the top of the top frame 102 is provided with a supporting frame 103, and the supporting frame 103 is of a trapezoidal structure; an alarm 104 is arranged inside the top frame 102, and a switch is arranged at the top of the alarm 104; a gas sensor 105 is arranged at the top end inside the main body box 1, and a cylinder is arranged at the bottom end inside the main body box 1; a rotating roller 2 is rotatably arranged on the two ejector rods 101, and a bevel gear is arranged on the rotating roller 2 and is meshed with a bevel gear at the front end of a motor on the main body box 1; a group of guide plates 3 are arranged on the left side and the right side of the main body box 1, and a scraper 4 is slidably arranged in each group of guide plates 3; two air inlet grooves 5 are formed in the left side and the right side of the interior of the main box 1; two groups of cross rods are arranged inside the main box 1, and two sealing plates 6 are sleeved on each group of cross rods in a sliding manner; the top of the supporting frame 103 is provided with a sliding chute, and two mounting sliding blocks 7 are arranged in the sliding chute through springs; the mounting sliding blocks 7 comprise pressing rods 701 and supporting plates 702, the tops of the two mounting sliding blocks 7 are respectively rotatably provided with one pressing rod 701, and the other ends of the two pressing rods 701 are provided with one supporting plate 702 through bearings; the supporting plate 702 is of an arc structure, when a mine slightly collapses, the stone presses the supporting plate 702 downwards to press one ends of the two pressing rods 701 downwards, the other ends of the two pressing rods 701 push the two installation sliding blocks 7 inwards, and the two installation sliding blocks 7 press the pressing blocks 802; a pressing rod 8 is slidably inserted in the middle of the top frame 102; the bottom of the main body box 1 is provided with four travelling wheels.
Further, the roller 2 comprises a turntable 201, an outer rod 202 and a connecting rod 203, the left end and the right end of the roller 2 are both provided with one turntable 201, and the outer sides of the two turntables 201 are both provided with one outer rod 202; the outer sides of the tail ends of the two outer rods 202 are rotatably provided with a connecting rod 203, the other ends of the two connecting rods 203 are connected with the outer side of one scraper 4 through bearings, the rotating roller 2 is driven to rotate by a motor under the action of a bevel gear, so that the rotating roller drives the two rotating discs 201 and the two outer rods 202 to rotate, the two outer rods 202 pull one ends of the two connecting rods 203, and the other ends of the two connecting rods 203 pull the two scrapers 4 up and down in a reciprocating manner.
Further, baffle 3 includes smooth roller 301, department's baffle 3 is the U-shaped structure, and a department's outer tank has all been seted up in the outside of department's baffle 3, this department's outer inslot all rotates and installs one row of smooth roller 301, when two department's scraper blades 4 reciprocate along two sets of baffles 3, four rows of smooth roller 301 and two department's scraper blade 4 friction rotation, thereby reduce the frictional force between two department's scraper blades 4 and two department's baffle 3, and then reduce the wear rate of two department's scraper blades 4, prolong the life of two department's scraper blades 4.
Further, scraper blade 4 includes inside groove 401 and cleaning roller 402, two department scraper blades 4 are the trapezium structure, and one department inside groove 401 has all been seted up to two department scraper blades 4's inboard, all rotate in these two department inside grooves 401 and install three cleaning roller 402, reciprocate along two sets of baffle 3 through scraper blade 4, utilize the trapezium structure of two department scraper blades 4 to scrape the dust that is stained with on with two sets of baffles 501, prevent to lead to two sets of air inlet ducts 5 because of the dust is too much to be blockked up, cause gaseous unable entering main part incasement 1, cause gas sensor 105 to be unable to gaseous monitoring.
Further, the air inlet groove 5 comprises a baffle 501, the air inlet grooves 5 at four positions are in a rectangular structure, and the baffle 501 is arranged at the outer end of each air inlet groove 5 at four positions; a set of filtering holes are formed in the four baffles 501, and dust is blocked by the two baffles 501, so that the dust is prevented from entering the main body box 1. Affecting the use of the gas sensor 105.
Further, the sealing plate 6 comprises an expanding rod 601 and push plates 602, the bottom of the inner side of the sealing plate 6 at four positions is rotatably provided with one expanding rod 601, and the other end of each expanding rod 601 at four positions is provided with one push plate 602 through a bearing; the bottom of the push plate 602 is connected with the top of the cylinder in the main body box 1, when gas does not need to be monitored, the push plate 602 is pushed upwards by the cylinder, so that the push plate 602 pushes upwards one end of the four expanding rods 601, the other ends of the four expanding rods 601 outwards expand and support the four sealing plates 6, the four sealing plates 6 shield the four air inlet grooves 5, and dust is better prevented from entering the main body box 1.
Further, the pressing rod 8 comprises a baffle disc 801 and a pressing block 802, the pressing block 802 is arranged at the top end of the pressing rod 8, and the pressing block 802 is of a triangular structure; the press rod 8 is provided with a stop disc 801 on the outer circumferential wall, a spring is arranged between the bottom of the stop disc 801 and the top of the top frame 102, when the installation sliding blocks 7 move to a certain position inwards, the two installation sliding blocks 7 extrude the pressing block 802, the pressing block 802 presses the press rod 8 downwards by utilizing the triangular structure of the pressing block 802, so that the press rod 8 presses the switch on the alarm 104, the alarm 104 is triggered to give an alarm, and collapse information is provided for personnel in the mine.
The working principle is as follows: when in use, firstly, air in a mine penetrates through the two air inlet grooves 5 to enter the main box 1, so that the oxygen concentration in the air is monitored by the gas sensor 105, then the rotating roller 2 is driven to rotate under the action of the bevel gear by the motor, the rotating roller drives the two rotating discs 201 and the two outer rods 202 to rotate, the two outer rods 202 pull one ends of the two connecting rods 203, the other ends of the two connecting rods 203 pull the two scraping plates 4 up and down in a reciprocating manner, so that the two scraping plates 4 move up and down along the two groups of guide plates 3, in the moving process, the dust adhered to the two groups of baffle plates 501 is scraped by utilizing the trapezoidal structures of the two scraping plates 4, the two groups of air inlet grooves 5 are prevented from being blocked due to excessive dust, so that the air cannot enter the main box 1, the gas sensor 105 cannot monitor the air, and when the air does not need to be monitored, the pushing plate 602 is pushed upwards by the air cylinder, the push plate 602 pushes up one end of the four expanding rods 601, so that the other ends of the four expanding rods 601 outwards expand the four sealing plates 6, the four air inlet grooves 5 are shielded by the four sealing plates 6, and dust is prevented from entering the main body box 1 to affect the normal use of the gas sensor 105.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. Diversified monitoring devices based on prospect engineering, its characterized in that: the alarm device comprises a main body box (1), wherein the main body box (1) comprises a mandril (101), a top frame (102), a supporting frame (103), an alarm (104) and a gas sensor (105), the main body box (1) is of a rectangular structure, a motor is arranged on the rear side of the top of the main body box (1), and a bevel gear is arranged at the front end of the motor; the top of the main body box (1) is symmetrically provided with two ejector rods (101), the tops of the two ejector rods (101) are provided with a top frame (102), and the top frame (102) is of a square structure; the top of the top frame (102) is provided with a supporting frame (103), and the supporting frame (103) is of a trapezoidal structure; an alarm (104) is arranged inside the top frame (102), and a switch is arranged at the top of the alarm (104); a gas sensor (105) is arranged at the top end of the interior of the main body box (1), and a cylinder is arranged at the bottom end of the interior of the main body box (1); a rotating roller (2) is rotatably arranged on the two ejector rods (101), and a bevel gear is arranged on the rotating roller (2) and is meshed with a bevel gear at the front end of a motor on the main body box (1); a group of guide plates (3) are arranged on the left side and the right side of the main body box (1), and a scraper (4) is slidably arranged in each group of guide plates (3); two air inlet grooves (5) are formed in the left side and the right side of the interior of the main box (1); two groups of cross rods are arranged inside the main box (1), and two sealing plates (6) are sleeved on each group of cross rods in a sliding manner; the top of the supporting frame (103) is provided with a sliding groove, and two mounting sliding blocks (7) are mounted in the sliding groove through springs; a pressing rod (8) is slidably inserted in the middle of the top frame (102); the bottom of the main body box (1) is provided with four travelling wheels.
2. The mining engineering-based multidirectional monitoring device as recited in claim 1, wherein: the rotary roller (2) comprises rotary discs (201), outer rods (202) and connecting rods (203), the rotary discs (201) are arranged at the left end and the right end of the rotary roller (2), and the outer rods (202) are arranged at the outer sides of the rotary discs (201); the outer sides of the tail ends of the two outer rods (202) are respectively rotatably provided with a connecting rod (203), and the other ends of the two connecting rods (203) are respectively connected with the outer side of one scraper (4) through bearings.
3. The mining engineering-based multidirectional monitoring device as recited in claim 1, wherein: guide plate (3) are including smooth roller (301), everywhere guide plate (3) are the U-shaped structure, and a department outer tank has all been seted up in the outside of everywhere guide plate (3), and this department outer tank is interior all to rotate and is installed one row of smooth roller (301).
4. The mining engineering-based multidirectional monitoring device as recited in claim 1, wherein: the scraper (4) comprises inner grooves (401) and cleaning rollers (402), the two scraper (4) are of a trapezoidal structure, one inner groove (401) is formed in the inner sides of the two scraper (4), and the three cleaning rollers (402) are rotatably mounted in the two inner grooves (401).
5. The mining engineering-based multidirectional monitoring device as recited in claim 1, wherein: the air inlet groove (5) comprises baffle plates (501), the air inlet grooves (5) at four positions are of rectangular structures, and the baffle plates (501) are arranged at the outer ends of the air inlet grooves (5) at four positions; a group of filtering holes are formed in the four baffles (501).
6. The mining engineering-based multidirectional monitoring device as recited in claim 1, wherein: the sealing plate (6) comprises a spreader bar (601) and push plates (602), wherein the spreader bar (601) is rotatably arranged at the bottom of the inner side of the sealing plate (6) at four positions, and the push plates (602) are arranged at the other ends of the spreader bars (601) at four positions through bearings; the bottom of the push plate (602) is connected with the top of the cylinder in the main body box (1).
7. The mining engineering-based multidirectional monitoring device as recited in claim 1, wherein: the mounting sliding blocks (7) comprise pressing rods (701) and supporting plates (702), one pressing rod (701) is rotatably mounted at the tops of the two mounting sliding blocks (7), and one supporting plate (702) is mounted at the other end of each of the two pressing rods (701) through a bearing; the supporting plate (702) is of an arc-shaped structure.
8. The mining engineering-based multidirectional monitoring device as recited in claim 1, wherein: the pressing rod (8) comprises a baffle disc (801) and a pressing block (802), the pressing block (802) is arranged at the top end of the pressing rod (8), and the pressing block (802) is of a triangular structure; a stop disc (801) is arranged on the circumferential outer wall of the pressing rod (8), and a spring is arranged between the bottom of the stop disc (801) and the top of the top frame (102).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110226351.4A CN112934773A (en) | 2021-03-01 | 2021-03-01 | Diversified monitoring devices based on prospect engineering |
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| CN202110226351.4A CN112934773A (en) | 2021-03-01 | 2021-03-01 | Diversified monitoring devices based on prospect engineering |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623006A (en) * | 2021-09-22 | 2021-11-09 | 华北科技学院(中国煤矿安全技术培训中心) | Gas concentration monitoring and early warning device for coal mine gas extraction |
| CN117102192A (en) * | 2023-10-18 | 2023-11-24 | 山西特运达科技有限公司 | License plate discernment all-in-one |
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Application publication date: 20210611 |