CN110295559A - A kind of cleaning of sectional type tunnel inverted arch and cleaner - Google Patents
A kind of cleaning of sectional type tunnel inverted arch and cleaner Download PDFInfo
- Publication number
- CN110295559A CN110295559A CN201910658218.9A CN201910658218A CN110295559A CN 110295559 A CN110295559 A CN 110295559A CN 201910658218 A CN201910658218 A CN 201910658218A CN 110295559 A CN110295559 A CN 110295559A
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- Prior art keywords
- harvesting
- filter
- material collecting
- collecting box
- box
- Prior art date
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- 238000004140 cleaning Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 54
- 238000003306 harvesting Methods 0.000 claims abstract description 51
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 239000004575 stone Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 24
- 238000005192 partition Methods 0.000 claims description 15
- 210000000621 bronchi Anatomy 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 3
- 241000220317 Rosa Species 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 20
- 238000007667 floating Methods 0.000 abstract description 19
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000005422 blasting Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
-
- 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
- E01H1/005—Mobile installations, particularly for upkeeping in situ road or railway furniture, for instance road barricades, traffic signs; Mobile installations particularly for upkeeping tunnel walls
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of cleaning of sectional type tunnel inverted arch and cleaners, Material collecting box for harvesting and filter device are closed suction structure, the filter device is equipped with filtering inlet air mouth and filtering air outlet, the suction opening of the blower fan apparatus is connected to the filtering air outlet, and the Material collecting box for harvesting is equipped with the first pump orifice connecting with suction tube and the second pump orifice for forming piping connection between the filtering inlet air mouth.The present invention is by using high-power blower device, filter device and Material collecting box for harvesting are in split settings, facilitate carry out long-distance transport, it is respectively set on the car body of a same flat tractor when in use, certainly can also be arranged on the car body of different tractors, need to only carry out being attached Material collecting box for harvesting and filter device by removable pipeline can be used, when in Material collecting box for harvesting stone and floating dust reach need topple over capacity when, only need to the traction car body only to Material collecting box for harvesting move, discharging is completed outside tunnel, movement is more flexible, more efficient.
Description
Technical field
The present invention relates to Tunnel Blasting technical fields, and in particular to a kind of cleaning of sectional type tunnel inverted arch and cleaner,
The rubble and floating dust reserved on tunnel inverted arch ground are removed for mechanization before being laid with cement after explosion.
Background technique
Tunnel is the emphasis and key project of the construction such as highway, railway.With railway construction development and science and technology progress,
Tunnel excavation method is grown rapidly.More commonly used excavation method has drilling and blasting method, shield method and tunnel boring machine method.Due to boring
Quick-fried method is adaptable to geological conditions, excavate it is at low cost, especially suitable for solid rock tunnel, fractured rock tunnel and a large amount of short
The construction in tunnel, therefore drilling and blasting method is still current tunnel excavation method common both at home and abroad.
Tunnel after drilling and blasting method is excavated, most of rubble is through engineering machines such as bull-dozer, excavators on ground
Tool is removed, and part rubble and floating dust also will be present on ground, is needed a large amount of artificial progress ground purified treatment at present, is led to
It crosses cleaning and cleans out ground using the means such as rag, cement then is laid with to ground again, with just can guarantee in tunnel in this way
The adhesive property of face cement.Due to the ground relief after explosion, road conditions and its complexity give manual cleaning and mechanical chipping
The huge difficulty of intervention bring of equipment, manual cleaning rubble and floating dust labor intensity are big, and dust pair caused by floating dust
The health for clearing up worker generates very detrimental effect, strong in order to reduce the artificial labour for removing ground rubble and floating dust
Degree, reduces cost, needs a kind of mechanized operation mode, improves working efficiency.
Summary of the invention
For the above deficiency in the prior art, the present invention provides a kind of cleanings of sectional type tunnel inverted arch and dedusting to set
It is standby, it may be implemented to reach the standard for being laid with cement, work to remaining rubble and floating dust quickly clean on tunnel ground after explosion
It is high-efficient, avoid various harm brought by manual cleaning.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of cleaning of sectional type tunnel inverted arch and cleaner, the equipment include Material collecting box for harvesting, blower fan apparatus and filtering dress
It sets, the Material collecting box for harvesting and filter device are closed suction structure, and the filter device is equipped with filtering inlet air mouth and filtering outlet air
Mouthful, the suction opening of the blower fan apparatus is connected to the filtering air outlet, and the Material collecting box for harvesting is equipped with the connect with suction tube
One pump orifice and between the filtering inlet air mouth formed piping connection the second pump orifice.
First pump orifice is set to the side upper position of the Material collecting box for harvesting, and second pump orifice is set to described
The opposite other side lower position of Material collecting box for harvesting is equipped with gear slabstone in the Material collecting box for harvesting far from first pump orifice, described
It keeps off and reserves a gap between the upper end and the Material collecting box for harvesting of slabstone, the gear slabstone will be divided into two collection inside the Material collecting box for harvesting
The lower part of feed bin, the Material collecting box for harvesting is equipped with the Pai Shikou with sealed gate, and the Pai Shikou is connected to two collecting bins.
Row's stone mouth is respectively arranged at the one or both sides of the Material collecting box for harvesting adjacent with first pump orifice.
The filter device includes filter box, partition and multiple groups filter core, and the partition divides the filter box
It is divided into filter chamber and exhausting chamber, multiple through-holes are formed on the partition, filter core described in multiple groups is set to the filter chamber
It is interior, and the aspiration end of the filter core forms with the through-hole and seals mating, the filtering inlet air mouth and the filtering
Chamber is connected, and the filtering air outlet is connected with the exhausting chamber.
The partition is horizontally placed on the top of the filter box, the filter chamber and exhausting chamber be located at it is described every
The following above and of plate.
Blowback cleaning device is additionally provided on the filter box comprising gas tank, main tracheae and multiple pulse valves, the main gas
Pipe is connected to the gas tank, and multiple pulse valves pass through bronchus respectively and are connected to the main tracheae, the pulse valve and institute
The pump orifice formation for stating the intracavitary filter core of exhausting connects one to one.
The side of the filter box is additionally provided with rubble blanking cabinet connected to it, for collect be pumped up it is broken
Stone, the rubble blanking box body is interior to be equipped with the first sealing plate and the second sealing plate, and first sealing plate is arranged close to the filter box,
Second sealing plate is arranged far from the filter box；The medial surface of first sealing plate and the second sealing plate is multiple in being staggeredly equipped with
Baffle, multiple baffles are equipped with an airflow channel in setting is tilted down between first sealing plate and the filter box,
The top of the rubble blanking cabinet is connected to the airflow channel top, and the lower part of the airflow channel and the filter chamber connect
It is logical.
The blower fan apparatus is centrifugal blower, is fixedly connected with the filter device.
Technical solution of the present invention has the advantages that
A. for the present invention by using high-power blower device, filter device and Material collecting box for harvesting are in split settings, facilitate progress remote
Journey transport, is respectively set on the car body of a same flat tractor when in use, different tractors can also be arranged in certainly
Car body on, only need to carry out by removable pipeline to Material collecting box for harvesting and filter device be attached i.e. can be used, work as Material collecting box for harvesting
In stone and floating dust reach need topple over capacity when, only need to the traction car body only to Material collecting box for harvesting move, outside tunnel
Discharging is completed, movement is more flexible, more efficient.
B. also rubble blanking cabinet is arranged in the filter box side of filter device in the present invention, by rubble blanking cabinet
The interior inclined multiple mazy baffle arrangements of setting are easy to implement the blocking sedimentation to rubble, rubble are stopped to be directly entered
It filters in device, is combined with gear slabstone structure set in Material collecting box for harvesting, effectively big stone is blocked in Material collecting box for harvesting, only
It needs floating dust to enter in filter device, by carrying out segmentation classification processing to ratchel, rubble and floating dust, significantly improves filtering dress
The floating dust filter efficiency set.
C. the present invention integrates blower fan apparatus and filter device, provides suction for entire cleaning and cleaner and moves
Power is equipped with row's stone mouth structure with sealed gate simultaneously in the lower part of container, can be quick by way of tilting container
The stone etc. in two collecting bins is drawn off, Mechanization Level is high.
Detailed description of the invention
It, below will be to needed in specific embodiment in order to illustrate more clearly of the specific embodiment of the invention
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present invention, for this field
For those of ordinary skill, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram after filter device, blower fan apparatus and rubble doffer provided by the present invention are integrated；
Fig. 2 is Material collecting box for harvesting structural schematic diagram provided by the present invention；
Fig. 3 is another angled arrangement schematic diagram shown in Fig. 2；
Fig. 4 is the Material collecting box for harvesting Longitudinal cross section schematic for being labeled with airflow direction；
Fig. 5 is schematic diagram of internal structure after filter device, blower fan apparatus and rubble doffer are integrated；
Fig. 6 is the structural schematic diagram of another angle of structure shown in Fig. 5；
Fig. 7 is another structural schematic diagram of filter device.
Description of symbols:
1- Material collecting box for harvesting；
The first pump orifice of 1a-, the second pump orifice of 1b-
2- blower fan apparatus
3- filter device
31- filter box, 32- partition, 33- filter core, 3a- filter chamber, 3b- exhausting chamber
4- keeps off slabstone；5- sealed gate
6- blowback cleaning device
61- gas tank, the main tracheae of 62-, 63- pulse valve, 64- bronchus
7- rubble blanking cabinet
The first sealing plate of 71-, the second sealing plate of 72-, 73- baffle
8- airflow channel
A- filtering inlet air mouth；B- filters air outlet；C- arranges stone mouth；D- through-hole.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As depicted in figs. 1 and 2, the present invention provides a kind of cleaning of sectional type tunnel inverted arch and cleaners, including gather materials
Case 1, blower fan apparatus 2 and filter device 3, Material collecting box for harvesting 1 and filter device 3 are closed suction structure, are respectively equipped with leakproofness
Can cabinet, filter device 3 is equipped with filtering inlet air mouth a and filtering air outlet b, the suction opening of blower fan apparatus 2 and filtering outlet air
Mouth b connection, Material collecting box for harvesting 1 are equipped with the first pump orifice 1a connecting with suction tube and for forming pipeline between filtering inlet air mouth a
Second pump orifice 1b of connection.
The blower fan apparatus preferably used in the present invention is centrifugal fan and the driving electricity by being driven by electricity blower rotation
Machine, by using high-power blower device, wherein split settings are presented in filter device and Material collecting box for harvesting, facilitate carry out long-distance transport,
It can be separately positioned on the car body of same flat tractor or crawler, can also be separately positioned on certainly when in use
On the car body of different tractors, only need to by removable pipeline to the connection air port being arranged on Material collecting box for harvesting and filter device into
Row connection i.e. can be used, when in Material collecting box for harvesting stone and floating dust reach need topple over capacity when, by Material collecting box for harvesting and filter device
Connecting line disassembly after, only need to the traction car body to Material collecting box for harvesting move, complete discharging outside tunnel, movement is more flexible,
It is more efficient.
The box structure that gathers materials as shown in Figure 2, Figure 3 and Figure 4, the first pump orifice 1a therein are set to the side of Material collecting box for harvesting 1
Upper position, the second pump orifice 1b are set to the opposite other side lower position of Material collecting box for harvesting 1, in the collection far from the first pump orifice 1a
It is equipped with gear slabstone 4 in hopper 1, keeps off and reserves a gap between the upper end and Material collecting box for harvesting 1 of slabstone 4, gear slabstone 4 will be inside Material collecting box for harvesting 1
It is divided into two collecting bins, is equipped with the row stone mouth c with sealed gate 5 in the lower part of Material collecting box for harvesting 1, row stone mouth c gathers materials with two
Storehouse connection.Air-flow can enter in Material collecting box for harvesting in the first pump orifice 1b, can stitch by the top of gear slabstone 4 along route shown in Fig. 4
Gap enters in another collecting bin, then has in the second pump orifice 1b and is discharged, subsequently into filter device, by gear slabstone 4
The gap of side is mostly floating dust or the lesser rubble of particle.
For the ease of clearing up the stone and floating dust saved bit by bit in Material collecting box for harvesting, row stone mouth c is respectively arranged at and first
The one or both sides of pump orifice 1a adjacent Material collecting box for harvesting 1.It is, of course, also possible to be set on other two side, here no longer in detail
It describes in detail bright.
As shown in Figure 5 and Figure 6, the filter device 3 provided in the present invention includes filter box 31, partition 32 and multiple groups mistake
Filter core 33 is filtered, filter box 31 is divided into filter chamber 3a and exhausting chamber 3b, multiple through-holes are formed on partition 32 by partition 32
D, multiple groups filter core 33 are set in filter chamber 3a, and the aspiration end of filter core 33 and through-hole d formation sealing are mating,
Filtering air outlet b is connected with exhausting chamber 3b.As shown in fig. 7, filtering inlet air mouth a is connected with filter chamber 3a,
As shown in fig. 6, partition 32 is horizontally placed on the top of filter box 31, filter chamber 3a and exhausting chamber 3b are located at
The following above and of partition 32.The air inlet of blower fan apparatus is connected to exhausting chamber 3b.
As shown in Figure 1, being additionally provided with blowback cleaning device 6 on filter box 31 comprising gas tank 61, main tracheae 62 and multiple
Pulse valve 63, main tracheae 62 are connected to gas tank 61, and multiple pulse valves 63 are connected to by bronchus 64 with main tracheae 62 respectively, pulse
The pump orifice formation of filter core 33 in valve 63 and exhausting chamber 3b connects one to one.It can use the air blast facility in tunnel
Gas injection is carried out to gas tank, when needing to carry out back flush to filter core 33, stops blower fan apparatus, while opening each pulse
Floating dust on filter core 33 is blown off filter core surface, helps to improve the filter efficiency of filter core, Reusability by valve
It prolongs its service life.
As shown in Figure 5 and Figure 6, the present invention is also equipped with rubble blanking cabinet 7 connected to it in the side of filter box 31,
For collecting the rubble being pumped up, the first sealing plate 71 and the second sealing plate 72, the first sealing plate 71 are equipped in rubble blanking cabinet 7
It is arranged close to filter box 31, the second sealing plate 72 is arranged far from filter box 31；The inside of first sealing plate 71 and the second sealing plate 72
Face is set between the first sealing plate 72 and filter box 31 in multiple baffles 73, multiple baffles 73 are staggeredly equipped in setting is tilted down
There is an airflow channel 8, the top of rubble blanking cabinet 7 is connected to 8 top of airflow channel, the lower part of airflow channel 8 and filter chamber
3a connection.
In conjunction with Fig. 4 and suction route map shown in fig. 5 it is found that stone, the rubble being pumped up on inverted arch substrate ground
Enter in Material collecting box for harvesting with floating dust, is stopped compared with ratchel by gear slabstone, the rubble and floating dust compared with small particle pass through under suction
Rubble blanking cabinet further masks rubble under the action of keeping off slabstone, and floating dust was entered by the top of the first sealing plate
In the cavity for filtering device, under the blocking of filter core, further floating dust is separated, clean gas is arranged by blower
Out, whole process does not need manually to participate in cleaning work, substantially reduces labour, improves tunnel ground speed of perfusion.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
Variation is still in the protection scope of this invention.
Claims (8)
1. a kind of sectional type tunnel inverted arch cleaning and cleaner, which is characterized in that the equipment includes Material collecting box for harvesting (1), blower
Device (2) and filter device (3), the Material collecting box for harvesting (1) and filter device (3) are closed suction structure, the filter device (3)
It is equipped with filtering inlet air mouth (a) and filtering air outlet (b), the suction opening of the blower fan apparatus (2) and the filtering air outlet (b)
Connection, the Material collecting box for harvesting (1) are equipped with the first pump orifice (1a) connecting with suction tube and are used for and the filtering inlet air mouth (a)
Between formed piping connection the second pump orifice (1b).
2. sectional type tunnel inverted arch cleaning according to claim 1 and cleaner, which is characterized in that first suction
Mouth (1a) is set to the side upper position of the Material collecting box for harvesting (1), and second pump orifice (1b) is set to the Material collecting box for harvesting (1)
Opposite other side lower position, far from first pump orifice (1a) the Material collecting box for harvesting (1) in be equipped with gear slabstone (4),
A reserved gap between the upper end and the Material collecting box for harvesting (1) of gear slabstone (4), the gear slabstone (4) is by the Material collecting box for harvesting (1)
Inside is divided into two collecting bins, and the lower part of the Material collecting box for harvesting (1) is equipped with the Pai Shikou (c) with sealed gate (5), the row
Stone mouth (c) is connected to two collecting bins.
3. sectional type tunnel inverted arch cleaning according to claim 2 and cleaner, which is characterized in that row's stone mouth
(c) one or both sides of the Material collecting box for harvesting (1) adjacent with first pump orifice (1a) are respectively arranged at.
4. sectional type tunnel inverted arch cleaning according to claim 1 to 3 and cleaner, which is characterized in that the mistake
Filter device (3) includes filter box (31), partition (32) and multiple groups filter core (33), and the partition (32) is by the Rose Box
Body (31) is divided into filter chamber (3a) and exhausting chamber (3b), forms multiple through-holes (d), mistake described in multiple groups on the partition (32)
Filter filter core (33) is set in the filter chamber (3a), and the aspiration end of the filter core (33) and the through-hole (d) are formed
Seal mating, the filtering inlet air mouth (a) is connected with the filter chamber (3a), the filtering air outlet (b) with it is described
Exhausting chamber (3b) is connected.
5. sectional type tunnel inverted arch cleaning according to claim 4 and cleaner, which is characterized in that the partition (32)
It is horizontally placed on the top of the filter box (31), the filter chamber (3a) and exhausting chamber (3b) are located at the partition
(32) following above and.
6. sectional type tunnel inverted arch cleaning according to claim 5 and cleaner, which is characterized in that the filter box
(31) blowback cleaning device (6) are additionally provided on comprising gas tank (61), main tracheae (62) and multiple pulse valves (63), the main gas
Pipe (62) is connected to the gas tank (61), and multiple pulse valves (63) pass through bronchus (64) and the main tracheae (62) respectively
The pump orifice of the filter core (33) in connection, the pulse valve (63) and the exhausting chamber (3b) forms the company of one-to-one correspondence
It connects.
7. sectional type tunnel inverted arch cleaning according to claim 6 and cleaner, which is characterized in that the filter box
(31) side is additionally provided with rubble blanking cabinet (7) connected to it, and for collecting the rubble being pumped up, the rubble is fallen
The first sealing plate (71) and the second sealing plate (72) are equipped in hopper body (7), first sealing plate (71) is close to the filter box
(31) it is arranged, second sealing plate (72) is arranged far from the filter box (31)；First sealing plate (71) and the second sealing plate
(72) for medial surface in staggeredly multiple baffles (73) are equipped with, multiple baffles (73) are in tilt down setting, first envelope
Between plate (72) and the filter box (31) be equipped with an airflow channel (8), the top of the rubble blanking cabinet (7) with it is described
The connection of airflow channel (8) top, the lower part of the airflow channel (8) is connected to the filter chamber (3a).
8. sectional type tunnel inverted arch cleaning according to claim 1 and cleaner, which is characterized in that the blower fan apparatus
(2) it is centrifugal blower, is fixedly connected with the filter device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658218.9A CN110295559A (en) | 2019-07-21 | 2019-07-21 | A kind of cleaning of sectional type tunnel inverted arch and cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658218.9A CN110295559A (en) | 2019-07-21 | 2019-07-21 | A kind of cleaning of sectional type tunnel inverted arch and cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110295559A true CN110295559A (en) | 2019-10-01 |
Family
ID=68031478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910658218.9A Pending CN110295559A (en) | 2019-07-21 | 2019-07-21 | A kind of cleaning of sectional type tunnel inverted arch and cleaner |
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| Country | Link |
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| CN (1) | CN110295559A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357565A (en) * | 2021-05-18 | 2021-09-07 | 杨啸 | Lighting device for tunnel construction |
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