CN110984041A - Dust removal vehicle for tunnel construction - Google Patents
Dust removal vehicle for tunnel construction Download PDFInfo
- Publication number
- CN110984041A CN110984041A CN201911156412.3A CN201911156412A CN110984041A CN 110984041 A CN110984041 A CN 110984041A CN 201911156412 A CN201911156412 A CN 201911156412A CN 110984041 A CN110984041 A CN 110984041A
- Authority
- CN
- China
- Prior art keywords
- dust
- vehicle
- rapping
- tunnel construction
- vehicle body
- 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.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
- E01H1/0827—Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses a dust removal vehicle for tunnel construction, which comprises a dust collection vehicle head and a vehicle body, wherein the dust collection vehicle head comprises an exhaust fan embedded at the front end; a simple electrostatic dust collection device and an atomizing nozzle are arranged in the vehicle body; the simple electrostatic dust collection device comprises two insulation plates which are respectively arranged on the left side and the right side in the vehicle body, wherein a positive electrode needle is arranged on one side, and a negative electrode needle is arranged on the other side; the upper ends of the insulating plates are provided with baffle plates; a rapping device is also arranged above the baffle; the lower end surface of the insulating plate is also provided with a downward-inclined dust exhaust plate, and a mud pit is arranged below the dust exhaust plate; the dust removal vehicle also comprises a storage battery arranged in the dust removal vehicle; the top of the tail of the dust removing vehicle is also provided with an atomizing nozzle; the problem of raise dust pollution in the air of the tunnel construction site can be effectively solved, air humidity is increased, secondary raise dust is effectively reduced, the whole device is simple in structure, high-price professional machinery can be basically replaced, and construction cost is saved.
Description
Technical Field
The invention relates to the field of tunnel construction devices, in particular to a dust removal vehicle for tunnel construction.
Background
China has wide territorial earth, complex terrain and geology, and countless engineering projects of bridge construction and tunnel penetration, wherein the application of the tunnel technology plays an important role.
In tunnel construction, because a large amount of excavation work needs to be carried out, dust splashes on a construction site, and the problem that a large amount of dust floats is easily caused. The excessive dust floats to pollute the construction environment of workers, and the visibility of a construction site and the body health of constructors are greatly influenced. The existing on-site construction method needs on-site dust removal besides selecting a correct and proper construction mode.
The tunnel dust removal method mainly comprises the following steps:
1. adopting a wet rock drill: the dust is reduced by 80 percent compared with the dry type.
2. Spraying concrete by using a wet spraying machine: the dry-type jet machine has extremely large dust and is eliminated; although the wet type spraying machine has good dustproof performance, the equipment is complex, the operation is not easy, the cost is high, the popularization is not easy, the popularization is currently carried out, the HPJ-1 type wet and semi-wet spraying concrete machine which is subjected to research in 3 months of 1992 and passes the department-level identification by the research institute of the tunnel bureau, the dust is reduced by 85 percent compared with dry spraying, and the wet type spraying machine is light, low in manufacturing cost and the most popular product.
3. Water seal blasting: compared with common blasting, the dust can be reduced by 85.6-91%.
4. Spraying water: opening a sprayer 10-15 m away from a working surface before blasting to spray water, and closing the sprayer after blasting; before slag discharging, the slag pile and the rock wall are sprayed by high-pressure water to wash the attached powder layer.
5. Mechanical ventilation: ventilation and dust removal are both considered.
6. Installing a dust remover: the dust remover is arranged in front of the working surface in the tunnel, and is wet in most countries, and the scattering rate is not high. In 7 months 1982, LKG-60 tunnel-in-bag dust remover successfully researched by the research institute of the tunnel bureau, the dust removal scattering rate reaches over 99 percent, and the price is 3 to 4 times lower than that of imported dust. However, the cost for purchasing a dust remover is still high for a construction unit, and therefore a dust removing machine with low price and excellent dust removing effect is required.
Disclosure of Invention
The invention discloses a dust removal vehicle for tunnel construction, which comprises a dust collection vehicle head and a vehicle body, wherein the dust collection vehicle head comprises an exhaust fan embedded at the front end; a simple electrostatic dust collection device and an atomizing nozzle are arranged in the vehicle body; the simple electrostatic dust collection device comprises two insulation plates which are respectively arranged on the left side and the right side in the vehicle body, wherein a positive electrode needle is arranged on one side, and a negative electrode needle is arranged on the other side; the upper ends of the insulating plates are respectively provided with a baffle fixedly connected with the insulating plates; a rapping device is also arranged above the baffle; the lower end surface of the insulating plate is also provided with a downward-inclined dust exhaust plate, and a mud pit is arranged below the dust exhaust plate; the dust removal vehicle also comprises a storage battery arranged in the dust removal vehicle; the top of the tail of the dust removing vehicle is also provided with an atomizing nozzle.
Particularly, the rapping device comprises a crankshaft connecting rod driven by a motor, and the crankshaft connecting rod is hinged with the lower end of a vertically arranged movable frame body; the vibrating mechanism further comprises a vibrating rubber hammer arranged on the upper surface of the baffle plate and a vibrating support fixed on the upper surface of the baffle plate, wherein the middle part of a hammer rod of the vibrating rubber hammer is hinged with the top end of the vibrating support; the tail end of a hammer rod of the rubber hammer penetrates through the movable frame body.
Particularly, the motor and the crankshaft connecting rod are arranged in the dust cover, and the movable frame body penetrates through a movable frame body through groove arranged at the top end of the dust cover and then is sleeved at the tail end of the hammer rod of the rapping rubber hammer.
Particularly, one side of the dust collection vehicle head and one side of the vehicle body are connected through a hinged support, and bolt seats are arranged on the outer portions of the other side of the dust collection vehicle head and the other side of the vehicle body and connected through fastening bolts.
In particular, the insulating plate has a trapezoidal cross section.
Particularly, the left side and the right side of the outer part of the dust removal vehicle are also provided with water tanks, and the water tanks are sequentially connected with a water pumping motor and an atomizing nozzle through hoses arranged at the bottom.
In particular, the storage battery is respectively and electrically connected with the motor, the simple electrostatic dust collection device and the water pumping motor.
Particularly, the bottom of the dust removing vehicle is provided with universal wheels, the side surface of the vehicle body is also provided with a handle, and the handle is sleeved with an insulating sheath.
The invention has the beneficial effects that: the invention can effectively reduce the problem of dust pollution in air of a tunnel construction site, simultaneously increases air humidity, effectively reduces secondary dust, has simple structure and convenient operation, can basically replace expensive professional dust removal machinery, greatly saves construction cost and obtains greater economic benefit.
Drawings
Fig. 1 is a perspective view of the exterior of the dust catcher.
Fig. 2 is a main view of the dust catcher.
Fig. 3 is a schematic view of the interior structure of the vehicle body.
FIG. 4 is a schematic structural diagram of a simple electrostatic precipitator.
Fig. 5 is a schematic view of the construction of the rapping device.
Wherein, the dust collection vehicle head-1; an exhaust fan-11; a vehicle body-2; a simple electrostatic dust removal device-3; an insulating plate-31; a positive electrode needle-311; a negative electrode needle-312; a baffle-32; a dust exhaust plate-33; a mud pit-34; an atomizing nozzle-4; a rapping device-5; a crankshaft connecting rod-51; a movable frame-52; vibrating a rubber hammer-53; a rapping support-54; a dust cover-6; a bolt seat-7; a water tank-8; a universal wheel-9; a handle-10.
Detailed Description
The invention will be further explained with reference to the drawings.
A dust removal vehicle for tunnel construction comprises a dust collection vehicle head 1 and a vehicle body 2, wherein the dust collection vehicle head 1 comprises an exhaust fan 11 embedded at the front end; the exhaust fan 11 is mounted on the dust collection vehicle head 1 in an embedded manner and sucks dust-containing air in the tunnel into the dust collection vehicle; a simple electrostatic dust removal device 3 and an atomizing nozzle 4 are arranged in the vehicle body 2; the simple electrostatic dust collection device 3 comprises two insulation plates 31 respectively arranged at the left side and the right side in the vehicle body 2, wherein one side is provided with a positive electrode needle 311, and the other side is provided with a negative electrode needle 312; when the dust remover works, a pressure difference exists between the electrified positive electrode needle 311 and the electrified negative electrode needle 312, dust-containing air sucked by the exhaust fan 11 is ionized, dust with negative charges is sucked to the positive electrode needle 311, and dust with positive charges is sucked to the negative electrode needle 312, so that the effect of primary dust removal is achieved; the upper ends of the insulating plates 31 are respectively provided with a baffle 32 fixedly connected with the insulating plates 31; a rapping device 5 is also arranged above the baffle 32; the rapping device 5 mainly plays a role in enabling ionized dust adsorbed on the positive electrode needle 311 and the negative electrode needle 312 to fall off from the electrode needles in a vibration mode, so as to avoid influencing the subsequent dust removal effect; the lower end face of the insulating plate 31 is also provided with a downward-inclined dust exhaust plate 33, and a mud pit 34 is arranged below the dust exhaust plate 33; the dust falling off by the rapping device 5 is buffered by the dust discharge plate 33 and falls into the lower mud tank 34, the mud tank 34 is filled with water, the dust falling into the mud tank 34 is directly absorbed by the water, and the dust is quickly dissolved into mud after entering the water due to certain vibration of the device during working; the dust removal vehicle also comprises a storage battery arranged in the dust removal vehicle; still be equipped with atomizer 4 at the rear of a vehicle top of dust removal car, atomizer 4 can be wet through remaining dust in the simple and easy electrostatic precipitator device 3 back air, and the weight aggravates for thereby the dust whereabouts plays the effect of dust removal.
As a preferred technical scheme, the rapping device 5 comprises a crankshaft connecting rod 51 driven by a motor, and the crankshaft connecting rod 51 is hinged with the lower end of a movable frame body 52 which is vertically arranged; the device also comprises a rapping rubber hammer 53 arranged on the upper surface of the baffle plate 32 and a rapping support 54 fixed on the upper surface of the baffle plate 32, wherein the middle part of a hammer rod of the rapping rubber hammer 53 is hinged with the top end of the rapping support 54; the tail end of the hammer rod of the rapping rubber hammer 53 penetrates through the movable frame body 52; after the motor is started, the movable frame body 52 does up-and-down reciprocating motion ceaselessly under the drive of the crankshaft connecting rod 51, and as the hammer rod of the rapping rubber hammer 53 is hinged on the rapping support 54, and the tail end of the rapping rubber hammer passes through the movable frame body 52, the hammer head of the rapping rubber hammer 53 can continuously hammer on the baffle plate, thereby achieving the purpose of rapping the whole simple electrostatic dust collector 3.
As a preferable technical solution, the motor and the crankshaft connecting rod 51 are arranged in a dust cover 6, and the movable frame 52 passes through a movable frame through groove 61 arranged at the top end of the dust cover 6 and then is sleeved at the tail end of a hammer rod of the rapping rubber hammer 52; the dust cover 6 is connected with the side wall of the vehicle body 2 and the insulating plate 31, and the dust content of the working environment is high, so that the service life of the crankshaft connecting rod 51 and the motor can be prolonged by arranging the crankshaft connecting rod 51 and the motor in the dust cover 6, but dust removal and lubricating oil replenishment are required regularly.
As a preferable technical scheme, one side of the dust collection vehicle head 1 and one side of the vehicle body 2 are connected through a hinged support, a bolt seat 7 is arranged outside the other side of the dust collection vehicle head 1 and the vehicle body 2, and the bolt seat 7 is connected through a fastening bolt; the whole dust collection vehicle head 1 and the whole dust collection vehicle body 2 are connected through the hinge support, so that the whole dust collection vehicle can be opened after working for a period of time, mud in the mud tank 34 can be cleaned, water in the mud tank 34 can be replaced, and normal operation of the dust collection vehicle can be guaranteed.
As a preferable technical solution, the section of the insulating plate 31 is trapezoidal, which can prevent the dust wind from directly blowing on the electrode pins to affect the adsorption effect, and can also prevent the dust wind from carrying the dust knocked off by the rapping device 5 away from the electrode pins again.
As a preferred technical scheme, water tanks 8 are further arranged on the left side and the right side of the outer part of the dust removal vehicle, and the water tanks 8 are sequentially connected with a water pumping motor and an atomizing nozzle 4 through hoses arranged at the bottom; the atomization nozzle 4 is used as a supplementary means of the dust removal vehicle, can remove dust of dust-containing air primarily removed by the simple electrostatic dust removal device 3 for the second time, and increases air humidity, so that the environment humidity of the whole tunnel construction site is increased, the weight of dust in the air is increased, and secondary dust raising is prevented.
As a preferred technical scheme, the storage battery is respectively and electrically connected with the motor, the simple electrostatic dust collection device 3 and the water pumping motor; the storage battery is arranged in the dust removing vehicle, the dust removing vehicle can be separated from the field for limitation, the device can not be used under the condition that the wire arrangement cannot be carried out in the field, and the device is also provided with a short-circuit protection device.
As a preferred technical scheme, the bottom of the dust removal vehicle is provided with universal wheels 9, the side surface of the vehicle body 2 is also provided with a handle 10, and an insulating sheath is sleeved on the handle; the device also comprises an automatic walking system which can be pushed by manpower and can also automatically work through the automatic walking system.
The points to be finally explained are: first, in the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A dust removal vehicle for tunnel construction comprises a dust collection vehicle head (1) and a vehicle body (2), and is characterized in that the dust collection vehicle head (1) comprises an exhaust fan (11) embedded at the front end; a simple electrostatic dust collection device (3) and an atomizing nozzle (4) are arranged in the vehicle body (2); the simple electrostatic dust collection device (3) comprises two insulation plates (31) which are respectively arranged on the left side and the right side in the vehicle body (2), wherein the insulation plate (31) on one side is provided with a positive electrode needle (311), and the insulation plate (31) on the other side is provided with a negative electrode needle (312); the upper ends of the insulating plates (31) are respectively provided with a baffle (32) fixedly connected with the insulating plates (31); a rapping device (5) is also arranged above the baffle plate (32); the lower end face of the insulating plate (31) is also provided with a dust exhaust plate (33) which inclines downwards, and a mud pit (34) is arranged below the dust exhaust plate (33); the dust removal vehicle also comprises a storage battery arranged in the dust removal vehicle; the top of the tail of the dust removal vehicle is also provided with an atomizing nozzle (4).
2. A dust-removing vehicle for tunnel construction according to claim 1, characterized in that the rapping device (5) comprises a crankshaft connecting rod (51) driven by a motor, the crankshaft connecting rod (51) is hinged with the lower end of a movable frame body (52) which is vertically arranged; the device also comprises a rapping rubber hammer (53) arranged on the upper surface of the baffle plate (32) and a rapping support (54) fixed on the upper surface of the baffle plate (32), wherein the middle part of a hammer rod of the rapping rubber hammer (53) is hinged with the top end of the rapping support (54); the tail end of a hammer rod of the rapping rubber hammer (53) penetrates through the movable frame body (52).
3. The dust removing vehicle for tunnel construction as claimed in claim 2, wherein the motor and the crankshaft connecting rod (51) are arranged in a dust cover (6), and the movable frame body (52) passes through a movable frame body through groove (61) arranged at the top end of the dust cover (6) and then is sleeved at the tail end of the hammer rod of the rapping rubber hammer (52).
4. The dust removing vehicle for tunnel construction as claimed in claim 1, wherein one side of the dust removing vehicle head (1) and one side of the vehicle body (2) are connected through a hinged support, a bolt seat (7) is arranged outside the other side of the dust removing vehicle head (1) and the other side of the vehicle body (2), and the bolt seat (7) is connected through a fastening bolt.
5. The dust removing vehicle for tunnel construction according to claim 1, wherein the cross section of the insulation plate (31) is trapezoidal.
6. The dust removing vehicle for tunnel construction according to claim 1, wherein water tanks (8) are further arranged on the left and right sides of the outer portion of the dust removing vehicle, and the water tanks (8) are sequentially connected with a water pumping motor and an atomizing nozzle (4) through hoses arranged at the bottom.
7. The dust-removing vehicle for tunnel construction as claimed in claim 1, wherein the storage battery is electrically connected with the motor, the simple electrostatic dust-removing device (3) and the water pumping motor, respectively.
8. The dust removing vehicle for tunnel construction according to claim 1, wherein universal wheels (9) are arranged at the bottom of the dust removing vehicle, a handle (10) is further arranged on the side surface of the vehicle body (2), and an insulating sheath is sleeved on the handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156412.3A CN110984041B (en) | 2019-11-22 | 2019-11-22 | Dust removal vehicle for tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156412.3A CN110984041B (en) | 2019-11-22 | 2019-11-22 | Dust removal vehicle for tunnel construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110984041A true CN110984041A (en) | 2020-04-10 |
| CN110984041B CN110984041B (en) | 2021-01-29 |
Family
ID=70085940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911156412.3A Active CN110984041B (en) | 2019-11-22 | 2019-11-22 | Dust removal vehicle for tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110984041B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459823A (en) * | 2020-12-09 | 2021-03-09 | 重庆交通大学 | Energy-concerving and environment-protective dry and wet combination formula tunnel construction dust collector |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59170309A (en) * | 1983-03-16 | 1984-09-26 | 新明和工業株式会社 | Filter device of road cleaning vehicle |
| CN106759021A (en) * | 2016-12-30 | 2017-05-31 | 太仓韬信信息科技有限公司 | A kind of road cleaning device |
| CN206566681U (en) * | 2017-03-07 | 2017-10-20 | 李晓阳 | A kind of building engineering construction dust arrester |
| CN207308101U (en) * | 2017-09-08 | 2018-05-04 | 安徽德邦化工有限公司 | A kind of high-voltage electrostatic dust separator |
| CN208251580U (en) * | 2018-04-28 | 2018-12-18 | 温州欧帝林装饰设计有限公司 | A kind of decorative engineering floor ceramic tile paving device |
| CN208824157U (en) * | 2018-05-15 | 2019-05-07 | 江苏久历森环境科技有限公司 | A kind of box deduster being convenient to clean |
| CN209378655U (en) * | 2018-12-17 | 2019-09-13 | 中建四局第五建筑工程有限公司 | A kind of constructing tunnel dust-extraction unit |
-
2019
- 2019-11-22 CN CN201911156412.3A patent/CN110984041B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59170309A (en) * | 1983-03-16 | 1984-09-26 | 新明和工業株式会社 | Filter device of road cleaning vehicle |
| CN106759021A (en) * | 2016-12-30 | 2017-05-31 | 太仓韬信信息科技有限公司 | A kind of road cleaning device |
| CN206566681U (en) * | 2017-03-07 | 2017-10-20 | 李晓阳 | A kind of building engineering construction dust arrester |
| CN207308101U (en) * | 2017-09-08 | 2018-05-04 | 安徽德邦化工有限公司 | A kind of high-voltage electrostatic dust separator |
| CN208251580U (en) * | 2018-04-28 | 2018-12-18 | 温州欧帝林装饰设计有限公司 | A kind of decorative engineering floor ceramic tile paving device |
| CN208824157U (en) * | 2018-05-15 | 2019-05-07 | 江苏久历森环境科技有限公司 | A kind of box deduster being convenient to clean |
| CN209378655U (en) * | 2018-12-17 | 2019-09-13 | 中建四局第五建筑工程有限公司 | A kind of constructing tunnel dust-extraction unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459823A (en) * | 2020-12-09 | 2021-03-09 | 重庆交通大学 | Energy-concerving and environment-protective dry and wet combination formula tunnel construction dust collector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110984041B (en) | 2021-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110984041B (en) | Dust removal vehicle for tunnel construction | |
| CN202672078U (en) | High pressure cleaning device suitable for cleaning of guardrails | |
| CN104652336B (en) | Highway isolation facility cleaning Vehicle | |
| CN212105942U (en) | Spraying dust removal equipment for coal mine electromechanical fully mechanized mining support | |
| CN112900205A (en) | Road construction tamping device | |
| CN210458889U (en) | Pavement maintenance construction equipment | |
| CN114684076B (en) | Kiln car sweeper capable of flexibly reversing | |
| CN109356073A (en) | A kind of civil engineering ground garbage cleaning device | |
| CN216108272U (en) | Tunnel ponding cleaning device for civil engineering | |
| CN209798634U (en) | Dust absorption mouth with buffering resetting means | |
| CN109453595B (en) | Mining explosion-proof dust collector | |
| CN210459074U (en) | Small-size electronic sweeping machine | |
| CN216999494U (en) | Highway construction dust keeper | |
| CN216663968U (en) | A suction device and road cleaning equipment for road cleaning equipment | |
| CN213358233U (en) | Rammer compactor is used in municipal administration road bridge construction | |
| CN216712878U (en) | Road cleaning equipment | |
| CN214061438U (en) | Highway construction is with watering dust device | |
| CN110302620A (en) | A kind of construction site construction dust-extraction unit | |
| CN220026473U (en) | Dust collecting equipment for surface mine blasting | |
| CN216663962U (en) | Rolling brush device for road cleaning equipment and road cleaning equipment | |
| CN217442958U (en) | Construction engineering quality detects uses demolition ware | |
| CN116237281B (en) | Roadway cleaning dust collection vehicle | |
| CN217781847U (en) | Cleaning machine for pedestrian overpass baffle | |
| CN220946039U (en) | Diamond wire saw with dustproof function | |
| CN210358453U (en) | Photovoltaic module's belt cleaning device |
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 |