CN217421257U - Movable tunnel construction spraying dust device - Google Patents
Movable tunnel construction spraying dust device Download PDFInfo
- Publication number
- CN217421257U CN217421257U CN202220911830.XU CN202220911830U CN217421257U CN 217421257 U CN217421257 U CN 217421257U CN 202220911830 U CN202220911830 U CN 202220911830U CN 217421257 U CN217421257 U CN 217421257U
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- Prior art keywords
- dust
- transverse
- pipe
- frame structure
- water
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- 239000000428 dust Substances 0.000 title claims abstract description 96
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000005507 spraying Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- 238000003860 storage Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 239000002893 slag Substances 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 206010010904 Convulsion Diseases 0.000 abstract description 9
- 230000036461 convulsion Effects 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 230000002349 favourable effect Effects 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 208000028571 Occupational disease Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides a movable tunnel construction spraying dust-settling device, which comprises a transverse underframe, a driving wheel, a dust-settling box, an auxiliary dust-collecting frame structure, a rotary driving positioning frame structure, an air outlet pipe, a water liquid circulating filter frame structure, a transverse protecting net, a transverse spray pipe, a water storage tank, a water supply pump, a water supply pipe, a transverse pipe and a dust-collecting nozzle, wherein the driving wheel is arranged at a bolt at the four corners of the lower part of the transverse underframe; the middle upper part of the transverse underframe is provided with a dust removal box; the left side of dust removal case install supplementary dust absorption frame structure. The left side and the right side of the flexible conduit of the utility model are respectively connected with the reinforcing rings by gluing, the reinforcing rings are utilized to support the two ends of the flexible conduit, and dust and air can not be easily conveyed when the air draft frame rotates; the connection pad is connected with the lower part bolt of convulsions frame, utilizes angle rotating electrical machines to pass through connecting pipe and connection pad and drives the convulsions frame and rotate to carry out the interior adjustment of small-angle to the orientation of convulsions frame.
Description
Technical Field
The utility model belongs to the technical field of the tunnel dust removal, especially, relate to a movable tunnel construction spraying dust device.
Background
Along with social progress, the nation and enterprises pay more and more attention to occupational health, and it is a necessary requirement to create a good operation environment for construction operators. The tunnel construction operation has narrow operation surface and poor ventilation condition, dust and toxic and harmful gas generated in the construction production process are not easy to diffuse, which brings serious influence to the health of construction operators, and the tunnel construction operation is also a serious disaster area for occupational diseases such as pneumoconiosis, acute and chronic harmful gas poisoning and the like. The tunnel construction is a complicated process, and the environmental pollution is also great. The tunnel construction face is many, and the single port is tunneled long, and construction dust volume is big, can produce a large amount of dust during the construction blasting, and the dust fall effect is direct to the job site, if the job site does not in time carry out the dust fall, will serious harm producers' healthy, influence construction safety and production progress.
But current tunnel construction spraying dust device has inconveniently to eliminate the raise dust according to the demand, and inconvenient circulates dust removal liquid and inconvenient carries out the problem of extraction to the raise dust.
Therefore, the invention is very necessary to provide a movable tunnel construction spraying dust-settling device.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a movable tunnel construction spraying dust device to there is inconvenient according to the demand in solving current tunnel construction spraying dust device and eliminates the raise dust, and inconvenient circulates and inconvenient problem of carrying out the extraction to the raise dust to the dust removal liquid. A movable tunnel construction spraying dust-settling device comprises a transverse underframe, a driving wheel, a dust-settling box, an auxiliary dust-collecting frame structure, a rotary driving positioning frame structure, an air outlet pipe, a water liquid circulating filter frame structure, a transverse protective net, a transverse spray pipe, a water storage tank, a water supply pump, a water supply pipe, a transverse pipe and a dust-settling spray head, wherein the driving wheel is mounted at four corners of the lower part of the transverse underframe through bolts; the middle upper part of the transverse underframe is provided with a dust removal box; an auxiliary dust collection frame structure is arranged on the left side of the dust removal box; the lower part of the auxiliary dust collection frame structure is provided with a rotary driving positioning frame structure, and the rotary driving positioning frame structure is arranged on the left side of the upper part of the transverse bottom frame; an air outlet pipe is arranged on the right side of the upper part of the dust removal box; the inner side of the transverse bottom frame is provided with a water liquid circulating filter frame structure; a transverse protecting net is installed on the upper part of the inner side of the dust removing box through screws; the upper side of the transverse protecting net is provided with a transverse spraying pipe, and the transverse spraying pipe is mounted at the top of the inner side of the dust removing box through a screw; a water storage tank is arranged on the right side bolt at the upper part of the transverse underframe; a water supply pump is arranged at the bottom of the water storage tank; a water supply pipe is arranged at the water outlet of the water supply pump; the right end of the water supply pipe is provided with a transverse pipe; the right side of the transverse pipe is provided with a dust removal spray head from the front side to the rear side; the auxiliary dust collection frame structure comprises a suction frame, a dust collection cover, a large-aperture protective net, a longitudinal installation rod, a driving motor, a suction fan blade and a flexible guide pipe, wherein the dust collection cover is arranged on the left side of the suction frame through a screw; a large-aperture protective net is mounted on the left side of the dust hood through screws; a longitudinal mounting rod is mounted on the left bolt inside the air draft frame; a driving motor is installed on a bolt in the middle of the longitudinal installation rod; an output shaft of the driving motor is provided with an exhaust fan blade; and a flexible guide pipe is arranged on the right side of the air draft frame.
Preferably, the rotary driving positioning frame structure comprises an angle rotary motor, a positioning cover, a connecting pipe, a connecting disc, a positioning rod and a positioning wheel, wherein the angle rotary motor is mounted on the left side of the upper part of the transverse underframe through a bolt; a positioning cover is arranged on an upper bolt of the angle rotating motor; a connecting pipe is arranged on an output shaft of the angle rotating motor through a bolt; the upper end of the connecting pipe is welded with a connecting disc; positioning rods are arranged at four corners of the lower part of the connecting disc through bolts; the lower part of the outer side of the positioning rod is coupled with a positioning wheel.
Preferably, the water liquid circulating filter frame structure comprises a water storage tank, a slag discharge pipe, a sealing cover, a water pump filter screen, a guide filter screen, a circulating pump and a conveying pipe, wherein the water storage tank is embedded in the inner side of the transverse bottom frame and is communicated with the lower part of the dust removal box; the slag discharge pipe penetrates through the transverse underframe and is communicated with the lower right side of the water storage tank; a sealing cover is arranged on the right side of the slag discharging pipe; the middle lower part of the water storage tank is provided with a water pump filter screen; a guide filter screen is mounted on the upper part of the water pump filter screen cover through screws; a circulating pump is arranged on the upper part of the inner side of the water pump filter screen cover through a bolt; and a delivery pipe is arranged at the water outlet of the circulating pump.
Preferably, the left side and the right side of the flexible conduit are respectively glued with a reinforcing ring.
Preferably, the right end of the flexible conduit is embedded in the lower part of the left side of the dust removal box through a reinforcing ring.
Preferably, the connecting disc is connected with the lower part of the air draft frame through a bolt.
Preferably, the positioning wheel is in contact with the inner wall of the positioning cover.
Preferably, the conveying pipe penetrates through the water pump filter screen cover and the transverse protecting net and is communicated with the transverse spraying pipe.
Preferably, the guide filter screen inclines towards the upper left side, and the left end screw of the guide filter screen is installed at the lower left side of the inner wall of the dust removal box.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, the left and right sides of flexible pipe splice respectively and have the reinforcement ring, be favorable to conveniently using the reinforcement ring to play the effect of propping to the both ends of flexible pipe when using, and can not carry dust air easily when convulsions frame rotates.
2. The utility model discloses in, the right-hand member of flexible pipe pass through the left side lower part of reinforcing ring embedding at the dust removal case, be favorable to utilizing flexible pipe to carry raise dust and air to the dust removal incasement when using.
3. The utility model discloses in, the lower part bolted connection of connection pad and convulsions frame be favorable to utilizing angle rotating electrical machines to drive the convulsions frame through connecting pipe and connection pad when using and rotate to adjust in carrying out the small-angle to the orientation of convulsions frame.
4. The utility model discloses in, the contact of locating wheel and the inner wall of location cover, be favorable to making the locating wheel rotatory from the inner circle of location cover when using, and then can play the positioning action when using.
5. The utility model discloses in, the conveyer pipe run through the water pump and filter screen panel and horizontal protecting wire net and horizontal shower switch-on, be favorable to the water liquid in the convenient circulating pump extraction storage water tank of using when using to play the humidification elimination effect through horizontal protecting wire net to the raise dust through horizontal shower.
6. The utility model discloses in, the direction filter screen incline to the upper left side, the left end screw nail of direction filter screen is installed at the left downside of inner wall of dust removal case simultaneously, is favorable to conveniently playing the guide effect with the sewage that the downflow falls when using.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the structure of the auxiliary dust collecting frame of the present invention.
Fig. 3 is a schematic structural diagram of the rotary driving positioning frame structure of the present invention.
Fig. 4 is a schematic structural view of the water liquid circulating filter frame structure of the present invention.
In the figure:
1. a transverse chassis; 2. a drive wheel; 3. a dust removal box; 4. an auxiliary dust collection frame structure; 41. an air draft frame; 42. a dust hood; 43. a large-aperture protecting net; 44. a longitudinal mounting bar; 45. a drive motor; 46. an extraction fan blade; 47. a flexible conduit; 5. a rotationally driven positioning frame structure; 51. an angle rotating motor; 52. a positioning cover; 53. a connecting pipe; 54. a connecting disc; 55. positioning a rod; 56. positioning a wheel; 6. an air outlet pipe; 7. a water liquid circulating filter frame structure; 71. a water storage tank; 72. a slag discharge pipe; 73. a sealing cover; 74. a water pump filtering net cover; 75. guiding the filter screen; 76. a circulation pump; 77. a delivery pipe; 8. transverse protecting nets; 9. a transverse spray pipe; 10. a water storage tank; 11. a water supply pump; 12. a water supply pipe; 13. a transverse tube; 14. a dust removal spray head.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example (b):
as shown in fig. 1 and fig. 2, the utility model provides a movable tunnel construction spraying dust-settling device, which comprises a transverse underframe 1, a driving wheel 2, a dust-settling box 3, an auxiliary dust-collecting frame structure 4, a rotary driving positioning frame structure 5, an air outlet pipe 6, a water liquid circulating filter frame structure 7, a transverse protective net 8, a transverse spray pipe 9, a water storage tank 10, a water supply pump 11, a water supply pipe 12, a transverse pipe 13 and a dust-settling nozzle 14, wherein the driving wheel 2 is installed at the four lower corners of the transverse underframe 1 through bolts; the middle upper part of the transverse underframe 1 is provided with a dust removing box 3; an auxiliary dust collection frame structure 4 is arranged on the left side of the dust removal box 3; the lower part of the auxiliary dust collection frame structure 4 is provided with a rotary driving positioning frame structure 5, and the rotary driving positioning frame structure 5 is arranged on the left side of the upper part of the transverse underframe 1; an air outlet pipe 6 is arranged on the right side of the upper part of the dust removing box 3; the inner side of the transverse bottom frame 1 is provided with a water liquid circulating filter frame structure 7; a transverse protecting net 8 is installed on the upper part of the inner side of the dust removing box 3 through screws; a transverse spraying pipe 9 is arranged on the upper side of the transverse protecting net 8, and the transverse spraying pipe 9 is installed at the top of the inner side of the dust removing box 3 through a screw; a water storage tank 10 is mounted on the right side of the upper part of the transverse underframe 1 through a bolt; a water supply pump 11 is arranged at the bottom of the water storage tank 10; a water supply pipe 12 is arranged at the water outlet of the water supply pump 11; a transverse pipe 13 is arranged at the right end of the water supply pipe 12; a dust removal spray head 14 is arranged on the right side of the transverse pipe 13 from front to back; the auxiliary dust collection frame structure 4 comprises an air suction frame 41, a dust collection cover 42, a large-aperture protective net 43, a longitudinal installation rod 44, a driving motor 45, a suction fan blade 46 and a flexible guide pipe 47, wherein the dust collection cover 42 is installed on the left side of the air suction frame 41 through screws; a large-aperture protective net 43 is installed on the left side of the dust hood 42 through screws; a longitudinal installation rod 44 is installed on the left bolt inside the air draft frame 41; a driving motor 45 is mounted at the middle position of the longitudinal mounting rod 44 through a bolt; an output shaft of the driving motor 45 is provided with an exhaust fan blade 46; the right side of convulsions frame 41 install flexible pipe 47, the left and right sides of flexible pipe 47 splice respectively and have the reinforcement ring, the convenience plays to prop up the effect at the both ends of flexible pipe 47 with the reinforcement ring when using, and can not carry dust air easily when convulsions frame 41 rotates, the right-hand member of flexible pipe 47 pass through the left side lower part of reinforcement ring embedding at dust removal case 3, the convenience is carried raise dust and air to dust removal case 3 with flexible pipe 47 when using.
As shown in fig. 3, in the above embodiment, specifically, the rotation driving positioning frame structure 5 includes an angle rotation motor 51, a positioning cover 52, a connecting pipe 53, a connecting disc 54, a positioning rod 55 and a positioning wheel 56, wherein the angle rotation motor 51 is bolted on the left side of the upper portion of the transverse chassis 1; a positioning cover 52 is installed on the upper bolt of the angle rotating motor 51; a connecting pipe 53 is mounted on an output shaft of the angle rotating motor 51 through a bolt; the upper end of the connecting pipe 53 is welded with a connecting disc 54, the connecting disc 54 is in bolted connection with the lower part of the air draft frame 41, and when the air draft frame is used, the angle rotating motor 51 is utilized to drive the air draft frame 41 to rotate through the connecting pipe 53 and the connecting disc 54, so that the orientation of the air draft frame 41 can be adjusted within a small angle; positioning rods 55 are mounted at four lower corners of the connecting disc 54 through bolts; the positioning wheel 56 is coupled to the lower portion of the outer side of the positioning rod 55, the positioning wheel 56 contacts with the inner wall of the positioning cover 52, and the positioning wheel 56 rotates from the inner ring of the positioning cover 52 when in use, so that the positioning wheel can play a role in positioning when in use.
As shown in fig. 4, in the above embodiment, specifically, the water liquid circulating filter frame structure 7 includes a water storage tank 71, a slag discharge pipe 72, a sealing cover 73, a water pump filter screen 74, a guide filter screen 75, a circulating pump 76 and a conveying pipe 77, the water storage tank 71 is embedded in the inner side of the transverse bottom frame 1 and is communicated with the lower part of the dust removing box 3; the slag discharge pipe 72 penetrates through the transverse underframe 1 and is communicated with the lower right side of the water storage tank 71; a sealing cover 73 is arranged at the right side of the slag discharging pipe 72; a water pump filter screen 74 is arranged at the middle lower part of the water storage tank 71; a guide filter screen 75 is installed on the upper portion of the water pump filter screen cover 74 through screws, the guide filter screen 75 inclines towards the upper left side, and meanwhile, a left end screw of the guide filter screen 75 is installed on the lower left side of the inner wall of the dust removal box 3, so that sewage flowing downwards can be guided conveniently when the water pump filter screen cover is used; a circulating pump 76 is arranged on the upper part of the inner side of the water pump filter screen cover 74 through bolts; delivery pipe 77 is installed to the delivery port department of circulating pump 76, delivery pipe 77 run through water pump filter screen panel 74 and horizontal protecting wire net 8 and the switch-on of horizontal shower 9, the convenient water liquid that utilizes circulating pump 76 to extract in the storage water tank 71 when using to play the humidification elimination through horizontal shower 9 through horizontal protecting wire net 8 to the raise dust.
Principle of operation
In the working process of the utility model, the device is moved into the tunnel by the driving wheel 2 when in use, then the water liquid in the water storage tank 10 is extracted by the water supply pump 11 according to the requirement, then the water liquid is sprayed out from the dust removal spray head 14 through the water supply pipe 12 and the transverse pipe 13 in sequence, the elimination effect of the dust is realized, or the driving motor 45 is used for driving the suction fan 46 to extract the dust in the tunnel, then the dust enters the dust removal tank 3 through the flexible conduit 47, simultaneously the water liquid in the water storage tank 71 is extracted by the circulating pump 76, then the water liquid is sprayed out from the lower side of the transverse spray pipe 9 through the conveying pipe 77 and drops downwards through the transverse protective net 8, the dust entering the dust removal tank 3 is eliminated, then the air is sent out from the air outlet pipe 6 through the transverse protective net 8, the water liquid doped with dust is conveyed to the right side of the water storage tank 71 through the guide filter net 75, then the water liquid is filtered by the water pump filter net cover 74 to realize the cyclic utilization of the water liquid, after a period of use, the filtered dust slag can be led out from the slag discharge pipe 72 by opening the sealing cover 73.
Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.
Claims (6)
1. A movable tunnel construction spraying dust-settling device is characterized by comprising a transverse underframe (1), driving wheels (2), a dust-settling box (3), an auxiliary dust-collecting frame structure (4), a rotary driving positioning frame structure (5), an air outlet pipe (6), a water liquid circulating filter frame structure (7), a transverse protective net (8), a transverse spraying pipe (9), a water storage tank (10), a water supply pump (11), a water supply pipe (12), a transverse pipe (13) and a dust-settling spray head (14), wherein the driving wheels (2) are mounted at four corners of the lower part of the transverse underframe (1) through bolts; the middle upper part of the transverse underframe (1) is provided with a dust removal box (3); an auxiliary dust collection frame structure (4) is arranged on the left side of the dust removal box (3); the lower part of the auxiliary dust collection frame structure (4) is provided with a rotary driving positioning frame structure (5), and the rotary driving positioning frame structure (5) is arranged on the left side of the upper part of the transverse bottom frame (1); an air outlet pipe (6) is arranged on the right side of the upper part of the dust removing box (3); a water liquid circulating filter frame structure (7) is arranged on the inner side of the transverse bottom frame (1); a transverse protecting net (8) is installed on the upper part of the inner side of the dust removing box (3) through screws; a transverse spraying pipe (9) is arranged on the upper side of the transverse protecting net (8), and the transverse spraying pipe (9) is mounted at the top of the inner side of the dust removing box (3) through a screw; a water storage tank (10) is mounted on the right side of the upper part of the transverse underframe (1) through a bolt; a water supply pump (11) is arranged at the bottom of the water storage tank (10); a water supply pipe (12) is arranged at a water outlet of the water supply pump (11); a transverse pipe (13) is arranged at the right end of the water supply pipe (12); a dust removal spray head (14) is arranged on the right side of the transverse pipe (13) from front to back; the auxiliary dust collection frame structure (4) comprises an air suction frame (41), a dust collection cover (42), a large-aperture protective net (43), a longitudinal installation rod (44), a driving motor (45), a suction fan blade (46) and a flexible guide pipe (47), wherein the dust collection cover (42) is installed on the left side of the air suction frame (41) through a screw; a large-aperture protective net (43) is mounted on the left side of the dust hood (42) through screws; a longitudinal mounting rod (44) is mounted on the left bolt inside the air draft frame (41); a driving motor (45) is installed at the middle position of the longitudinal installation rod (44) through a bolt; an output shaft of the driving motor (45) is provided with an exhaust fan blade (46); and a flexible guide pipe (47) is arranged on the right side of the air draft frame (41).
2. The movable tunnel construction spray dust settling device according to claim 1, wherein the rotary driving positioning frame structure (5) comprises an angle rotating motor (51), a positioning cover (52), a connecting pipe (53), a connecting disc (54), a positioning rod (55) and a positioning wheel (56), and the angle rotating motor (51) is mounted on the left side of the upper part of the transverse underframe (1) through bolts; a positioning cover (52) is installed on an upper bolt of the angle rotating motor (51); a connecting pipe (53) is mounted on an output shaft of the angle rotating motor (51) through a bolt; the upper end of the connecting pipe (53) is welded with a connecting disc (54); positioning rods (55) are mounted at four lower corners of the connecting disc (54) through bolts; the lower part of the outer side of the positioning rod (55) is connected with a positioning wheel (56) in a shaft mode.
3. The movable tunnel construction spray dust settling device according to claim 1, wherein the water circulating filter frame structure (7) comprises a water storage tank (71), a slag discharge pipe (72), a sealing cover (73), a water pump filter screen (74), a guide filter screen (75), a circulating pump (76) and a conveying pipe (77), the water storage tank (71) is embedded in the inner side of the transverse underframe (1) and is communicated with the lower part of the dust removal box (3); the slag discharge pipe (72) penetrates through the transverse underframe (1) and is communicated with the lower right side of the water storage tank (71); a sealing cover (73) is arranged on the right side of the slag discharging pipe (72); a water pump filter screen (74) is arranged at the middle lower part of the water storage tank (71); a guide filter screen (75) is mounted on the upper portion of the water pump filter screen cover (74) through screws; a circulating pump (76) is mounted on the upper part of the inner side of the water pump filter screen cover (74) through bolts; and a delivery pipe (77) is arranged at the water outlet of the circulating pump (76).
4. The mobile tunnel construction spray dust settling device according to claim 1, wherein the right end of the flexible conduit (47) is embedded in the lower left side of the dust removal box (3) through a reinforcing ring.
5. The movable tunnel construction spray dust settling device as claimed in claim 2, wherein the connecting disc (54) is connected with the lower bolt of the air draft frame (41).
6. The movable tunnel construction spray dust settling device according to claim 3, wherein the guide screen (75) is inclined to the upper left side, and a left end screw of the guide screen (75) is installed at the lower left side of the inner wall of the dust removal box (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220911830.XU CN217421257U (en) | 2022-04-19 | 2022-04-19 | Movable tunnel construction spraying dust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220911830.XU CN217421257U (en) | 2022-04-19 | 2022-04-19 | Movable tunnel construction spraying dust device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217421257U true CN217421257U (en) | 2022-09-13 |
Family
ID=83182411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220911830.XU Expired - Fee Related CN217421257U (en) | 2022-04-19 | 2022-04-19 | Movable tunnel construction spraying dust device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217421257U (en) |
-
2022
- 2022-04-19 CN CN202220911830.XU patent/CN217421257U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220913 |
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| CF01 | Termination of patent right due to non-payment of annual fee |