CN114558866B - Intelligent storage device for open-cut blasting dust in high mountain gorge area - Google Patents
Intelligent storage device for open-cut blasting dust in high mountain gorge area Download PDFInfo
- Publication number
- CN114558866B CN114558866B CN202210209591.8A CN202210209591A CN114558866B CN 114558866 B CN114558866 B CN 114558866B CN 202210209591 A CN202210209591 A CN 202210209591A CN 114558866 B CN114558866 B CN 114558866B
- Authority
- CN
- China
- Prior art keywords
- dust
- umbrella
- connecting disc
- winch
- closing mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention provides an intelligent storage device for open-cut blasting dust in a high mountain canyon region, which comprises a bracket; the bracket is arranged on a track on a river valley side slope mountain body; the two ends of the cableway are respectively arranged on the supports, the cable car is arranged on the cableway, the cable car is provided with a winch, and a winch cable of the winch is connected with the umbrella-type net rack opening and closing mechanism; the umbrella type net frame opening and closing mechanism is provided with a dust removing net. The invention can improve the absorption rate of blasting dust, reduce the difficulty in cleaning acid slurry caused by wet dust removal, solve the problem of less types of absorbable dust to a certain extent, and is particularly important in the current environmental protection and ecological benefit in engineering construction. The invention provides a net type dust removal technology for the first time, the same equipment can be used for multiple times, the consumption of manpower and material resources is reduced, the novel technology can realize more thorough collection of dust, the cost is lower, the environmental protection benefit is more obvious, and the application prospect is wide.
Description
Technical Field
The invention provides an intelligent storage device for open-cut blasting dust in a high mountain canyon region, and belongs to the technical field of dust removal equipment.
Background
The blasting scale required for constructing the dam in the high mountain canyon is huge, and because surface rocks and soil need to be stripped, the blasting method has great influence on the surrounding ecological environment and residential facilities in actual construction, wherein the influence on the surroundings is most obvious due to dust pollution. Open blasting can produce a large amount of dusts in the mountain canyon, wherein is difficult to subside with fine particulate matter such as PM2.5, and these dusts can be spread outside hundreds of kilometers along with atmospheric motion, can all produce the influence to large-scale air quality and regional resident's quality of life. Meanwhile, the dust may cause various occupational diseases such as silicosis, and the life safety of constructors who stay in front of the line for a long time may be seriously threatened. Therefore, the dust control needs to be carried out at the same time of blasting.
At present, the common dust removal method for blasting in high mountain canyon regions is a wet dust removal method, and comprises a water pre-wetting blasting body dust reduction blasting technology, a water curtain blasting dust reduction blasting technology, a water stemming dust reduction technology, a humidifying and moistening agent magnetized water dust suppression technology, a foam dust removal technology and the like. However, the existing solutions only have the function of dust suppression, and the pollution problem cannot be completely solved, for example, a large amount of sand dust is generated in blasting dust and is insoluble in water, and the common wet dust removal method has a poor effect. Meanwhile, acid gas in the dust is easily dissolved in water, and acid slurry generated by mixing the dust with soil can bring serious damage to the surrounding ecological environment, and the service life of the equipment can be greatly shortened due to the acid slurry remained in the equipment. Therefore, a novel intelligent dust removing device is urgently needed to be developed.
Disclosure of Invention
In order to solve the technical problems, the invention provides an intelligent storage device for open-cut blasting dust generated in a high mountain canyon area, which is used for collecting dust generated by blasting when blasting is performed in the high mountain canyon area, so that the pollution to the environment due to the limitation of the original method is reduced, the absorption degree of the dust is increased, and the dust removal cost is reduced.
The specific technical scheme is as follows:
the intelligent storage device for the open-cut blasting dust in the high mountain gorge area comprises a bracket; the bracket is arranged on a track on a river valley side slope mountain body; the two ends of the cableway are respectively arranged on the supports, the cable car is arranged on the cableway, the cable car is provided with a winch, and a winch cable of the winch is connected with the umbrella-type net rack opening and closing mechanism; the umbrella type net rack opening and closing mechanism is provided with a dust removing net.
Further, the support comprises a support main body, the support main body comprises a support base, a reduction gearbox and a motor, a transmission shaft of the reduction gearbox is mounted on the support base through a flange bearing, and a fixing ring and a belt wheel are axially fixed on two sides of the transmission shaft; the reduction gearbox is in transmission connection with the motor through a belt wheel and a belt, the reduction gearbox is connected with the cable car, and the motor is used for driving the cable car.
The umbrella type net rack opening and closing mechanism also comprises an upper connecting disc and a lower connecting disc;
the periphery of the upper connecting disc is connected with a plurality of first universal joints, and each first universal joint is connected with the end part of a light steel pipe; the central hole of the upper connecting disc is sleeved at the top of the screw rod;
a nut is arranged in the center of the lower connecting disc and is in threaded connection with the lead screw; a plurality of second universal joints are arranged on the periphery of the lower connecting disc, each second universal joint is hinged with the end part of one carbon tube through a hinge, and the other end of the carbon tube is hinged on the light steel tube;
the center of the dust removing net is fixed on the periphery of the upper connecting disc, and the dust removing net is stretched outside the light steel pipe to form an umbrella structure capable of being opened and closed;
a plurality of balance weights are arranged around the lower part of the dust removing net.
The invention can improve the absorptivity of blasting dust, reduce the difficulty of cleaning acid slurry caused by wet dust removal, solve the problem of less varieties of absorbable dust to a certain extent, and is particularly important in the current environmental protection and ecological benefit in engineering construction. In blasting engineering, dust removal is taken as a large subject, on the basis of the existing wet dust removal technology, the invention provides a net type dust removal technology for the first time, the same equipment can be used for multiple times, the consumption of manpower and material resources is reduced, the new technology can realize more thorough collection of dust, the cost is lower, the environmental protection benefit is more remarkable, and the application prospect is wide.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic view of the stent structure of the present invention;
FIG. 4 is a schematic structural view of a stent body of the present invention;
FIG. 5 is a schematic view of the partial structure of the umbrella type net rack opening and closing mechanism of the present invention;
FIG. 6 is a schematic view of the unfolding structure of the umbrella type net rack folding mechanism of the present invention;
FIG. 7 is a schematic view of the closing mechanism of the umbrella-type net rack opening and closing mechanism of the present invention;
fig. 8 is a schematic structural view of the umbrella type net rack opening and closing mechanism of the invention.
Detailed Description
The specific technical scheme of the invention is explained by combining the attached drawings.
As shown in fig. 1 and 2, the intelligent storage device for the open-cut blasting dust in the high mountain canyon area comprises a support 1, a cableway 2, a winch 3, a cable car 4, a winch cable 5, an umbrella-type net rack opening and closing mechanism 6 and a track 7.
The bracket 1 is arranged on a track 7 on a river valley side slope mountain body; the two ends of the cableway 2 are respectively arranged on the bracket 1, the cable car 4 is arranged on the cableway 2, the cable car 4 is provided with a winch 3, and a winch cable 5 of the winch 3 is connected with the umbrella-type net rack opening and closing mechanism 6;
as shown in fig. 3 and 4, the support 1 includes a support main body 9, the support main body 9 includes a support base 16, a reduction gearbox 10 and a motor 11, a transmission shaft 15 of the reduction gearbox 10 is mounted on the support base 16 through a flange bearing 13, and a fixing ring 14 and a belt wheel 12 are axially fixed on two sides of the transmission shaft 15; the reduction gearbox 10 is in transmission connection with the motor 11 through a belt wheel 12 and a belt, the reduction gearbox 10 is connected with the cable car 4, and the motor 11 is used for driving the cable car 4;
as shown in fig. 5, 6, 7 and 8, the umbrella type net rack opening and closing mechanism 6 comprises an upper connecting disc 20 and a lower connecting disc 21;
the periphery of the upper connecting disc 20 is connected with a plurality of first universal joints 191, and each first universal joint 191 is connected with the end part of one light steel pipe 23; the central hole of the upper connecting disc 20 is sleeved on the top of the screw rod 18;
a nut 17 is arranged in the center of the lower connecting disc 21, and the nut 17 is in threaded connection with a lead screw 18; a plurality of second universal joints 192 are arranged on the periphery of the lower connecting disc 21, each second universal joint 192 is hinged with the end part of one carbon tube 22 through a hinge 24, and the other end of the carbon tube 22 is hinged on the light steel tube 23;
the center of the dust removing net 25 is fixed on the periphery of the upper connecting disc 20, and the dust removing net 25 is arranged outside the light steel pipe 23 to form an umbrella structure capable of being opened and closed;
a plurality of balance weights 26 are provided around the lower portion of the dust removing net 25.
Functional description of the various components:
the support 1 is used for supporting a cable and stabilizing the transportation of the cable car 4;
the cableway 2 is used for transporting the cable car 4 and provides a transverse moving route of the umbrella-type net rack opening and closing mechanism 6;
the winch 3 is used for controlling the stable descending of the umbrella type net rack opening and closing mechanism 6;
the cable car 4 is used for transporting the winch 3 and controlling the position of the umbrella-type net rack opening and closing mechanism 6 to move transversely;
the winch cable 5 is used for controlling the umbrella-type net rack opening and closing mechanism 6 to lift;
the umbrella type net rack opening and closing mechanism 6 is arranged above the blasting step 8 and used for blocking a dust diffusion path;
the rail 7 is used for controlling the longitudinal movement of the support 1
The blasting step 8 is a blasting place positioned at a mountain step;
the bracket main body 9 is used for providing support for the cableway 2;
the reduction box 10 is used for reducing the speed and simultaneously improving the output torque, so that the torque output proportion is multiplied by the reduction ratio according to the output of the motor 11;
the motor 11 is used to drive the cable car 4.
The belt wheel 12 is used for transmission;
the flange bearing 13 is used for axial positioning;
the fixing ring 14 is used for axial fixing;
the transmission shaft 15 is used for power transmission;
the leg rest 16 is for integral support.
The nut 17 is used for converting rotary motion into linear motion;
the screw 18 is used for providing a moving path for the nut 17;
the first universal joint 191 and the second universal joint 192 are used for changing the motion direction;
the upper connecting disc 20 is used for pivoting the framework;
the lower connecting disc 21 is used for connecting the connecting disc and the umbrella ribs and controlling the opening and closing states of the umbrella ribs;
the carbon tubes 22 are used for supporting umbrella ribs;
the light steel pipe 23 is used for supporting the shape of the dust removing net 25;
the hinge 24 is used for connecting the umbrella rib and the carbon tube 22;
the dust removal net 25 is used for absorbing dust;
the counterweight 26 is used to stabilize the dusting net state.
The use method of the intelligent storage device for the open-cut explosive dust in the high mountain canyon region comprises the following steps:
1) The rock quality of the blasting slope is known, the blasting area is determined, and the trend and the construction characteristics of other buildings such as surrounding residential areas, construction plants, cables, water pipes and electric wires and the relative distance between the building characteristics and the blasting area are known.
2) Collecting and collecting site conditions inspected at an early stage, and determining a blasting construction scheme according to construction requirements;
3) And measuring local ground wind speed, daytime solar radiation and air humidity, and determining the atmospheric stability according to a Paszier stability grade division table.
4) According to the blasting dust diffusion phenomenon, the blasting dust diffusion is found to have the characteristics of a smoke cluster model, and the blasting dust diffusion is not only a function of distance, but also a function of time. Establishing a rectangular coordinate system by taking a blasting point as an origin, and obtaining an improved Gaussian model by combining a data structure in engineering with a Gaussian diffusion formula:
rho (x, y, o) is the concentration of dust in the atmosphere at the coordinate of downwind ground (x, y), mg.m < -3 >; u. of x 、u y 、u z The average wind speed in x, y and z directions during local blasting is m/s; t is the dust mass diffusion time, s; q is the emission of dust mass, mg; sigma x 、σ y 、σ z The diffusion coefficients in the x, y and z directions.
During test explosion, the local wind speed u, the dust mass diffusion time t, the dust diffusion boundaries x, y and z and the dust discharge amount Q need to be measured.
5) According to the engineering blasting experience, the blasting dust amount is about 0.001% -0.1% of the blasting amount, and according to the Gaussian model, only about 2% -8% of dust is located at (2 sigma) x ,2σ y ),(2σ x ,-2σ y ),(-2σ x ,2σ y ),(-2σ x ,-2σ y ) The shape of the dust-removing net 25 is required to be similar to a circle in order to fit the shape of the net frame, and to take account of the balance problem when hanging the balance weight 26, the diameter of the dust-removing net 25 is required to be 2.8-3.3 in order to ensure the dust-removing efficiency when the net covers the raised part of the net frame
6) The contact of the dust-removing net 25 with dust requires an initial stage of mushroom cloud formation after the dust particle impact stage, considering only the vertical direction:
wherein M is the mass of the solid dust particles, d is the diameter of the dust particles, g is the local acceleration of gravity, mu d Is the coefficient of friction. When the dust removing net is released, the releasing time and the releasing speed are adjusted so that the dust removing net does not collide with large-particle dust or the occurrence frequency of the dust removing net is reduced.
7) And finding a proper place to erect the track 7 according to the data. Provides a longitudinal moving path for the umbrella type net rack opening and closing mechanism 6. The height difference between the track erecting place and the blasting place needs to be greater than the maximum height of the mushroom cloud;
8) Connecting the bracket 1 with the track 7 so that the bracket can move on the track 7;
9) The cableway 2 is connected with the brackets 1 on the two sides of the valley. A transverse moving path is provided for the umbrella type net rack opening and closing mechanism 6;
10 Mounting the cable car 4 on the cableway 2, fixing the winch 3 in the cable car, and erecting the bracket 1 at the other side;
11 Winch cable 5 is released to blasting step 8, umbrella-type net rack opening and closing mechanism 6 is connected to the cable, dust removing net 25 is covered on umbrella-type net rack opening and closing mechanism 6, winch 3 is started to lift umbrella-type net rack opening and closing mechanism 6 to the highest position, and umbrella-type net rack opening and closing mechanism 6 is remotely controlled to be closed;
12 Before blasting, the release position of the dust removal net 25 is determined by moving the bracket 1 and the cable car 4, the closed state of the umbrella type net rack opening and closing mechanism 6 is kept, the lower connecting disc 21 is positioned at the lower end of the screw rod 18, the umbrella type net rack opening and closing mechanism 6 is in an umbrella closing shape, the dust removal net 25 is also in an umbrella closing structure, the contact area of the dust removal net 25 and air is reduced, and the dust removal net 25 is prevented from being damaged by flying stones generated by blasting;
13 Considering the local wind speed, when the wind speed is less than 4m/s, the lower connecting disc 21 is lifted by reversing the screw rod 18 2-5 s after blasting, the umbrella-type net rack opening and closing mechanism 6 is opened, and the winch 3 is started to control the dust removal net 25 and the umbrella-type net rack opening and closing mechanism 6 to be lowered; when the local wind speed is more than 4m/s, the dust removal net 25 and the umbrella type net rack opening and closing structure 6 are opened and controlled to be lowered within 1-3 s after blasting;
14 10-50 min after the blasting is finished, spraying water mist on the dust removal net 25,
15 After the dust removal net 25 is completely wetted, the winch 3 is started to rise, and the lower connecting disc 21 is descended through the positive rotation of the screw rod 18, so that the closed recovery of the umbrella-type net rack opening and closing mechanism 6 is realized.
Claims (4)
1. The intelligent storage device for the open-cut exploded dust generated in the high mountain gorge area is characterized by comprising a support (1), wherein the support (1) is arranged on a track (7) on a slope mountain body of a river valley; two ends of the cableway (2) are respectively arranged on the bracket (1), the cable car (4) is arranged on the cableway (2), the cable car (4) is provided with a winch (3), and a winch cable (5) of the winch (3) is connected with the umbrella-type net rack opening and closing mechanism (6); the umbrella-type net rack opening and closing mechanism (6) is provided with a dust removing net (25).
2. The intelligent storage device for the open excavation explosion dust generation in the high mountain canyon area according to claim 1, wherein the support (1) comprises a support main body (9), the support main body (9) comprises a support base (16), a reduction gearbox (10) and a motor (11), a transmission shaft (15) of the reduction gearbox (10) is mounted on the support base (16) through a flange bearing (13), and a fixing ring (14) and a belt wheel (12) are axially fixed on two sides of the transmission shaft (15); the reduction gearbox (10) is in transmission connection with the motor (11) through a belt wheel (12) and a belt, the reduction gearbox (10) is connected with the cable car (4), and the motor (11) is used for driving the cable car (4).
3. The intelligent accommodation device for open-cut blasting dust in the high mountain canyon region according to claim 1, wherein the umbrella type net rack opening and closing mechanism (6) further comprises an upper connecting disc (20) and a lower connecting disc (21);
the periphery of the upper connecting disc (20) is connected with a plurality of first universal joints (191), and each first universal joint (191) is connected with the end part of one light steel pipe (23) respectively; the central hole of the upper connecting disc (20) is sleeved on the top of the screw rod (18);
a nut (17) is arranged in the center of the lower connecting disc (21), and the nut (17) is in threaded connection with a lead screw (18); a plurality of second universal joints (192) are arranged on the periphery of the lower connecting disc (21), each second universal joint (192) is hinged with the end part of one carbon tube (22) through a hinge (24), and the other end of the carbon tube (22) is hinged on the light steel tube (23);
the center of the dust removing net (25) is fixed on the periphery of the upper connecting disc (20), and the dust removing net (25) is stretched outside the light steel pipe (23) to form an umbrella structure capable of being opened and closed.
4. The intelligent accommodation device for open cut blasting dust generated in high mountain canyon areas according to claim 3, wherein a plurality of balance weights (26) are arranged around the lower portion of the dust removal net (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210209591.8A CN114558866B (en) | 2022-03-04 | 2022-03-04 | Intelligent storage device for open-cut blasting dust in high mountain gorge area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210209591.8A CN114558866B (en) | 2022-03-04 | 2022-03-04 | Intelligent storage device for open-cut blasting dust in high mountain gorge area |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114558866A CN114558866A (en) | 2022-05-31 |
| CN114558866B true CN114558866B (en) | 2022-11-22 |
Family
ID=81718495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210209591.8A Active CN114558866B (en) | 2022-03-04 | 2022-03-04 | Intelligent storage device for open-cut blasting dust in high mountain gorge area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114558866B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241320A (en) * | 2015-08-14 | 2016-01-13 | 中铁港航局集团有限公司 | Controlled blasting and protecting method for major bridge foundation on two sides of high and steep gorge in scenic spot |
| WO2016149850A1 (en) * | 2015-03-24 | 2016-09-29 | Jri Ingenieria S.A. | Integral wasteless mining process |
| CN111121574A (en) * | 2019-12-25 | 2020-05-08 | 中国水利水电第十四工程局有限公司 | Movable blasting protective cover plate |
| RU2019106398A (en) * | 2019-03-06 | 2020-09-07 | Михаил Николаевич Оверченко | Dust suppression method for blasting operations |
| CN112709593A (en) * | 2020-12-23 | 2021-04-27 | 张俊 | Tunnel engineering mine method excavation blasting instantaneous dust fall process |
| CN213748130U (en) * | 2020-10-28 | 2021-07-20 | 山东科技大学 | Novel blasting engineering is with dustproof device |
| CN113605903A (en) * | 2021-08-31 | 2021-11-05 | 四川公路桥梁建设集团有限公司 | Method for quickly, simply and easily excavating and lining new abnormal anchorage tunnel or arch foundation chamber |
-
2022
- 2022-03-04 CN CN202210209591.8A patent/CN114558866B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016149850A1 (en) * | 2015-03-24 | 2016-09-29 | Jri Ingenieria S.A. | Integral wasteless mining process |
| CN105241320A (en) * | 2015-08-14 | 2016-01-13 | 中铁港航局集团有限公司 | Controlled blasting and protecting method for major bridge foundation on two sides of high and steep gorge in scenic spot |
| RU2019106398A (en) * | 2019-03-06 | 2020-09-07 | Михаил Николаевич Оверченко | Dust suppression method for blasting operations |
| CN111121574A (en) * | 2019-12-25 | 2020-05-08 | 中国水利水电第十四工程局有限公司 | Movable blasting protective cover plate |
| CN213748130U (en) * | 2020-10-28 | 2021-07-20 | 山东科技大学 | Novel blasting engineering is with dustproof device |
| CN112709593A (en) * | 2020-12-23 | 2021-04-27 | 张俊 | Tunnel engineering mine method excavation blasting instantaneous dust fall process |
| CN113605903A (en) * | 2021-08-31 | 2021-11-05 | 四川公路桥梁建设集团有限公司 | Method for quickly, simply and easily excavating and lining new abnormal anchorage tunnel or arch foundation chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114558866A (en) | 2022-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114674288B (en) | Source pollution remote sensing monitoring and early warning device | |
| CN112546772B (en) | Dust removal bubble generator and dust removal method thereof | |
| CN114558866B (en) | Intelligent storage device for open-cut blasting dust in high mountain gorge area | |
| CN115855172B (en) | Environment pollution on-line monitoring data acquisition system | |
| CN114785251A (en) | Can prevent wind husky solar photovoltaic fixed bolster | |
| CN101105081A (en) | Wind energy edifice | |
| CN106500206A (en) | Vcehicular tunnel anion air purifying method | |
| CN101469674A (en) | Wind energy mansion with wind accumulating roof, wind accumulating door, wind draining door and wind power generator | |
| CN202329985U (en) | Windblown sand collector | |
| CN204676933U (en) | Can the solar airflow generating sunlight booth of automatic snow | |
| CN204676932U (en) | The solar airflow generating sunlight booth that braced structures is stable | |
| CN106000644A (en) | Efficient air purifier and purifying method | |
| CN220455254U (en) | Subway construction environment monitoring device | |
| CN106365065B (en) | Flux tassor dirt acquires apparatus for automatically lifting | |
| CN106351794A (en) | High-altitude wind energy comprehensive utilization engineering concept | |
| KR20200132006A (en) | System for removing fine dust in outdoor air | |
| CN206549835U (en) | Efficient atmospheric cleaning device | |
| CN217220752U (en) | Dust device for house construction project | |
| CN115077842B (en) | Experimental device for wind simulation of dust coil | |
| CN214532176U (en) | Solar charging shed | |
| CN221959977U (en) | Environment raise dust monitor | |
| CN221973222U (en) | Windproof dust suppression net | |
| CN116147699A (en) | Environment monitoring platform based on wisdom construction | |
| CN213422240U (en) | Monitoring device for building engineering supervision | |
| CN215208318U (en) | Maintenance device for wind power equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |