CN112893203B - Bridge bottom pipeline cleaning device - Google Patents
Bridge bottom pipeline cleaning device Download PDFInfo
- Publication number
- CN112893203B CN112893203B CN202110052550.8A CN202110052550A CN112893203B CN 112893203 B CN112893203 B CN 112893203B CN 202110052550 A CN202110052550 A CN 202110052550A CN 112893203 B CN112893203 B CN 112893203B
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- water
- beam body
- guide rod
- receiving tank
- water receiving
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- 238000004140 cleaning Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims description 20
- 238000005192 partition Methods 0.000 claims description 11
- 230000010405 clearance mechanism Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
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- B08B1/30—
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/023—Cleaning the external surface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of bridges, and provides a bridge bottom pipeline cleaning device which comprises two cleaning mechanisms, wherein each cleaning mechanism comprises: a first guide bar; the moving plate is arranged on the first guide rod, the bottom of the moving plate is provided with a second guide rod, and the second guide rod is perpendicular to the first guide rod; the first motor is arranged on the moving plate, and an output shaft of the first motor is provided with a driving wheel; the sliding block is arranged on the second guide rod; the first end of the screw rod is rotatably connected with the moving plate, the second end of the screw rod penetrates through the sliding block and then is rotatably connected with the moving plate, and the second motor is used for driving the screw rod to rotate; the movable box is fixedly connected with the sliding block; the top of the water pipe is provided with a plurality of nozzles; the water pump is used for conveying water in the water storage tank to the interior of the water pipe; and a control system. The bridge bottom pipeline cleaning device provided by the invention can be used for cleaning the pipeline and the bottom of a bridge regularly.
Description
Technical Field
The invention relates to the field of bridges, and particularly discloses a bridge bottom pipeline cleaning device.
Background
The bridge refers to a building constructed for a road to cross natural or artificial barriers, and is erected on rivers, lakes and seas, so that vehicles, pedestrians and the like can smoothly pass through the bridge.
In daily life, particularly in cities, the bridge can effectively improve urban gas quality, so the bridge often needs to be maintained. A large number of pipelines are usually paved at the bottom of the bridge bottom, and if the pipelines and the bottom of the bridge are irregularly cleaned, a large number of ash layers can be accumulated on the surfaces of the pipelines and the bottom of the bridge, so that great inconvenience is brought to the maintenance of the bridge.
Disclosure of Invention
In view of the above, the present invention is directed to a bridge bottom pipe cleaning device, so that the device can clean the bottom of the bridge and the pipe periodically.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a bridge bottom pipeline cleaning device, sets up on the roof beam body, includes two clearance mechanisms, two clearance mechanisms set up respectively the both sides of the roof beam body, clearance mechanism includes:
the first guide rod is parallel to the extending direction of the beam body, and two ends of the first guide rod are fixedly connected with the beam body;
the moving plate is arranged on the first guide rod and is in sliding connection with the first guide rod, a second guide rod is arranged at the bottom of the moving plate, the second guide rod is perpendicular to the first guide rod, and two ends of the second guide rod are fixedly connected with the moving plate;
the first motor is fixedly arranged on the moving plate, a driving wheel is arranged on an output shaft of the first motor, and the driving wheel is in contact with the side wall of the beam body;
the sliding block is arranged on the second guide rod and is in sliding connection with the second guide rod;
the first end of the screw rod is rotatably connected with the movable plate, the second end of the screw rod penetrates through the sliding block along the direction parallel to the second guide rod and is then rotatably connected with the movable plate, the screw rod is in threaded connection with the sliding block, and the second motor is fixedly arranged on the movable plate and is used for driving the screw rod to rotate;
the movable box is arranged below the beam body and fixedly connected with the sliding block, two sides of the top of the movable box are respectively provided with a water storage tank and a water receiving tank which extend downwards, the water storage tank is positioned on one side of the box body far away from the middle part of the beam body, and the water receiving tank is positioned on one side of the box body close to the middle part of the beam body;
the water pipe is transversely arranged at the upper end inside the water receiving tank, two ends of the water pipe are fixedly connected with the inner wall of the water receiving tank, a plurality of spray heads are mounted at the top of the water pipe, and the spray heads are arranged at intervals along the extending direction of the water pipe and are communicated with the inside of the water pipe;
the water pump is fixedly arranged in the water storage tank and used for conveying water in the water storage tank to the interior of the water pipe; and
and the control system is electrically connected with the first motor, the second motor and the water pump.
Furthermore, a partition plate arranged along the longitudinal direction is fixedly installed inside the water receiving tank, and the partition plate divides the water receiving tank into a first water receiving tank and a second water receiving tank;
the first water receiving tank is positioned on one side, away from the middle of the beam body, of the partition plate, a first filter screen is installed in the first water receiving tank and transversely arranged, the first filter screen is fixedly connected with the middle of the inner wall of the first water receiving tank, a first accommodating tank used for accommodating the water pipe is formed inside the first filter screen, a spring, an electromagnet and a permanent magnet are installed at the bottom of the first accommodating tank, the spring enables the water pipe to have an upward moving trend, the electromagnet is installed at the bottom of the first accommodating tank and is electrically connected with the control system, the permanent magnet is installed at the bottom of the water pipe, a plurality of second accommodating tanks which extend downwards and are communicated with the first accommodating tank are formed in the top of the first filter screen, and the plurality of second accommodating tanks are arranged in one-to-one correspondence with the plurality of spray heads;
the second water receiving tank is located being close to of baffle one side at roof beam body middle part, install the second filter screen along horizontal setting in the second water receiving tank, the second filter screen with the top fixed connection of the inner wall of second water receiving tank, the second filter screen is located the below of first filter screen.
Further, clearance mechanism still includes the scraper blade, the scraper blade is along vertically setting up, and being located keeping away from of the roof beam body one side at roof beam body middle part, the upper end of scraper blade with movable plate fixed connection, the lower extreme of scraper blade with the top contact of first filter screen.
Further, the top of the moving box is in contact with the bottom of the beam.
Further, the driving wheel is a friction wheel, and the friction wheel is in rolling contact with the side wall of the beam body.
Further, a plurality of the spray heads are arranged at equal intervals.
The working principle and the beneficial effects of the scheme are as follows:
1. according to the bridge bottom pipeline cleaning device provided by the invention, when the first motor controls the driving wheel to rotate, the movable plate can be driven to move forwards on the beam body. When the movable plate moves forwards, cleaning operation is started, at the moment, the water pump works, clean water in the water storage tank is pressurized and then is sprayed out through the plurality of spray heads, and therefore the bottom of the pipeline and the bottom of the bridge are cleaned, and bridge maintenance work in the future is facilitated.
2. According to the bridge bottom pipeline cleaning device provided by the invention, when the movable plate moves forwards on the beam body and meets a pier, the second motor works, and the slide block drives the movable box to gradually move away from the beam body under the action of the screw rod and the second guide rod, so that the whole cleaning mechanism can avoid the pier and continuously clean the bottom of the next part of pipeline and the bottom of the beam body. In addition, the cleaned residues are left on the tops of the first filter screen and the second filter screen, and after the cleaning operation is finished, the control system energizes the electromagnet to enable the electromagnet and the permanent magnet to attract each other, so that all the spray heads are hidden in the corresponding second accommodating grooves; then the second motor works once more, and under the effect of lead screw and second guide bar, the slider drives the removal case and keeps away from the roof beam body gradually, and at this moment under the effect of scraper blade, the residue on the first filter screen will be hung on the second filter screen to collect the residue, make things convenient for staff's centralized processing.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
FIG. 1 is a schematic view of the internal cross-section of the present invention;
FIG. 2 is a schematic view of the internal cross-section of the cleaning mechanism;
FIG. 3 is a schematic view of a first screen;
fig. 4 is a schematic view of an internal cross-sectional structure of the first screen.
The drawings are numbered as follows: 10-beam body, 11-guide groove, 12-pier, 20-cleaning mechanism, 21-first guide rod, 22-moving plate, 23-first motor, 24-slide block, 25-screw rod, 26-second motor, 27-moving box, 28-water pipe, 281-spray head, 29-water pump, 30-second guide rod, 31-driving wheel, 32-water storage tank, 33-clapboard, 40-water receiving tank, 41-first water receiving tank, 42-second water receiving tank, 43-first filter screen, 44-first receiving tank, 45-spring, 46-electromagnet, 47-permanent magnet, 48-second filter screen, 49-second receiving tank and 50-scraper.
Detailed Description
The following is further detailed by way of specific embodiments: as shown in FIGS. 1 to 4, the invention provides a device for cleaning a pipeline at the bottom of a bridge, which is arranged on a beam body 10, wherein guide grooves 11 extending inwards along the transverse direction are formed on both sides of the beam body 10. The present invention includes two cleaning mechanisms 20. The two cleaning mechanisms 20 are respectively arranged on two sides of the beam body 10, and each cleaning mechanism 20 comprises a first guide rod 21, a moving plate 22, a first motor 23, a sliding block 24, a screw rod 25, a second motor 26, a moving box 27, a water pipe 28, a water pump 29 and a control system.
The first guide rod 21 is located in the guide groove 11 on one side of the beam body 10 and is parallel to the extending direction of the beam body 10, and both ends of the first guide rod 21 are fixedly connected with the inner wall of the guide groove 11.
The moving plate 22 is provided on the first guide bar 21 and is slidable on the first guide bar 21. The bottom of the moving plate 22 is provided with a second guide rod 30, the second guide rod 30 is perpendicular to the first guide rod 21, and two ends of the second guide rod 30 are fixedly connected with the moving plate 22.
The first motor 23 is fixedly installed on the moving plate 22, the output shaft of the first motor 23 is installed with a driving wheel 31, and the driving wheel 31 is in close contact with the side wall of the beam body 10. When the first motor 23 is operated, the driving wheel 31 rolls on the side wall of the beam body 10, thereby sliding the moving plate 22 on the first guide bar 21.
The slider 24 is provided on the second guide bar 30 and is slidable on the second guide bar 30.
The first end of the screw rod 25 is rotatably connected with the moving plate 22, the second end of the screw rod 25 penetrates through the slider 24 along the direction parallel to the second guide rod 30 and is also rotatably connected with the moving plate 22, and the screw rod 25 is in threaded connection with the slider 24. A second motor 26 is fixedly mounted on the moving plate 22 for driving the screw 25 to rotate.
The movable box 27 is disposed below the beam body 10 and is fixedly connected to the slider 24. Two sides of the top of the movable box 27 are respectively provided with a water storage tank 32 and a water receiving tank 40 which extend downwards. The water storage tank 32 is positioned at one side of the box body far away from the middle part of the beam body 10, and clear water is filled in the water storage tank 32. The water receiving groove 40 is positioned at one side of the box body close to the middle part of the beam body 10.
The water pipe 28 is transversely arranged at the upper end inside the water receiving tank 40, and both ends of the water pipe are fixedly connected with the inner wall of the water receiving tank 40. A plurality of spray heads 281 are installed on the top of the water pipe 28, and the plurality of spray heads 281 are arranged at intervals along the extending direction of the water pipe 28 and are all communicated with the inside of the water pipe 28.
The water pump 29 is fixedly installed in the water storage tank 32, and is used for pressurizing the water in the water storage tank 32 and then delivering the pressurized water to the interior of the water pipe 28.
The control system is electrically connected to the first motor 23, the second motor 26 and the water pump 29.
The two cleaning devices 20 are operated synchronously, and the operation of only one cleaning device 20 will be described. When the cleaning mechanism 20 is operated, the first motor 23 controls the driving wheel 31 to rotate, so as to drive the moving plate 22 to move forward on the beam 10. When the moving plate 22 moves forward, cleaning operation is started, and at this time, the water pump 29 operates to pressurize the clean water in the water storage tank 32 and then spray the pressurized clean water out through the plurality of spray heads 281, so that the bottoms of the pipelines and the bridge are cleaned, and the subsequent bridge maintenance work is facilitated.
In one embodiment, a partition 33 is fixedly installed inside the water receiving tank 40, and the partition 33 divides the water receiving tank 40 into a first water receiving tank 41 and a second water receiving tank 42.
The first water receiving tank 41 is located on one side of the partition plate 33 far away from the middle of the beam body 10, a first filter screen 43 transversely arranged is installed in the first water receiving tank 41, and the first filter screen 43 is fixedly connected with the middle of the inner wall of the first water receiving tank 41. The first accommodating groove 44 for accommodating the water pipe 28 is formed in the first filter screen 43, and a spring 45, an electromagnet 46 and a permanent magnet 47 are mounted at the bottom of the first accommodating groove 44. The first end of the spring 45 is connected to the bottom of the first receiving groove 44, the second end of the spring 45 is connected to the bottom of the water pipe 28, and the spring 45 makes the water pipe 28 have a tendency to move upward, and the spray head 281 is exposed upward to the corresponding second receiving groove 49. The electromagnet 46 is fixedly installed at the bottom of the first receiving groove 44 and electrically connected to the control system. The permanent magnet 47 is fixedly installed at the bottom of the water pipe 28, the top of the first filter screen 43 is provided with a plurality of second accommodating grooves 49 which extend downwards and are communicated with the first accommodating grooves 44, and the plurality of second accommodating grooves 49 are in one-to-one correspondence with the plurality of spray heads 281.
The second water receiving tank 42 is located on one side of the partition plate 33 close to the middle of the beam body 10, a second filter screen 48 transversely arranged is installed in the second water receiving tank 42, the second filter screen 48 is fixedly connected with the top of the inner wall of the second water receiving tank 42, and the second filter screen 48 is located below the first filter screen 43.
Each time the moving plate 22 moves forward a certain distance on the girder 10, it meets the pier 12. At this time, the second motor 26 works, and under the action of the screw rod 25 and the second guide rod 30, the slide block 24 drives the moving box 27 to gradually move away from the middle of the beam 10, so that the whole cleaning mechanism 20 can avoid the pier 12. After avoiding the pier 12, the second motor 26 is operated again to rotate the screw 25 in the reverse direction, and the cleaning mechanism 20 is reset, so that the next portion of the pipeline and the bottom of the girder 10 are cleaned continuously.
In addition, during the cleaning operation, the sewage enters the bottoms of the first and second water receiving tanks 41 and 42, and the residue remains on the tops of the first and second strainers 43 and 48. When the cleaning operation is completed, the control system energizes the electromagnet 46, so that the electromagnet 46 and the permanent magnet 47 attract each other, and all the nozzles 281 are hidden in the corresponding second receiving grooves 49. Then the second motor 26 works again, and the slide block 24 drives the movable box 27 to gradually get away from the middle of the beam body 10 under the action of the screw rod 25 and the second guide rod 30. It is convenient for the worker to handle the residue on the first and second sieves 43 and 48.
In one embodiment, cleaning mechanism 20 further includes a scraper 50. The scraper 50 is disposed in a longitudinal direction and is located on a side of the beam 10 away from a middle portion of the beam 10. The upper end of the scraper 50 is fixedly connected with the moving plate 22, and the lower end of the scraper 50 is in contact with the top of the first filter screen 43. After the cleaning operation is completed, the second motor 26 works again, the sliding block 24 drives the moving box 27 to gradually keep away from the middle of the beam body 10 under the action of the screw rod 25 and the second guide rod 30, and at the moment, under the action of the scraper 50, residues on the first filter screen 43 can be hung on the second filter screen 48, so that the residues are collected, and the workers can conveniently perform centralized treatment on dust collection equipment.
In one embodiment, the top of the moving box 27 is in contact with the bottom of the beam 10. Thus, when the cleaning operation is performed, the water sprayed from the spray head 281 does not spill out from the inside of the movable box 27, and thus the pollution of the soil or river under the bridge by the sewage and the debris is prevented.
In one embodiment, the driving wheel 31 is a friction wheel, which is in rolling contact with the side wall of the beam body 10. The friction force between the friction wheel and the side wall of the beam body 10 is larger, so that the movement of the moving plate 22 is more stable when the first motor 23 works.
In one embodiment, the plurality of spray heads 281 are arranged at equal intervals, so that water sprayed from the plurality of spray heads 281 can be sprayed on the bottoms of the pipelines and the bridge more uniformly, and the cleaning operation is more effective.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.
Claims (4)
1. The utility model provides a bridge bottom pipeline cleaning device, sets up on the roof beam body, its characterized in that: including two clearance mechanisms, two clearance mechanisms set up respectively the both sides of roof beam body, clearance mechanism includes:
the first guide rod is parallel to the extending direction of the beam body, and two ends of the first guide rod are fixedly connected with the beam body;
the moving plate is arranged on the first guide rod and is in sliding connection with the first guide rod, a second guide rod is arranged at the bottom of the moving plate, the second guide rod is perpendicular to the first guide rod, and two ends of the second guide rod are fixedly connected with the moving plate;
the first motor is fixedly arranged on the moving plate, a driving wheel is arranged on an output shaft of the first motor, and the driving wheel is in contact with the side wall of the beam body;
the sliding block is arranged on the second guide rod and is in sliding connection with the second guide rod;
the first end of the screw rod is rotatably connected with the movable plate, the second end of the screw rod penetrates through the sliding block along the direction parallel to the second guide rod and is then rotatably connected with the movable plate, the screw rod is in threaded connection with the sliding block, and the second motor is fixedly arranged on the movable plate and is used for driving the screw rod to rotate;
the movable box is arranged below the beam body and fixedly connected with the sliding block, two sides of the top of the movable box are respectively provided with a water storage tank and a water receiving tank which extend downwards, the water storage tank is positioned on one side of the box body far away from the middle part of the beam body, and the water receiving tank is positioned on one side of the box body close to the middle part of the beam body;
the water pipe is transversely arranged at the upper end inside the water receiving tank, two ends of the water pipe are fixedly connected with the inner wall of the water receiving tank, a plurality of spray heads are mounted at the top of the water pipe, and the spray heads are arranged at intervals along the extending direction of the water pipe and are communicated with the inside of the water pipe;
the water pump is fixedly arranged in the water storage tank and used for conveying water in the water storage tank to the interior of the water pipe; and
the control system is electrically connected with the first motor, the second motor and the water pump;
a partition plate which is arranged along the longitudinal direction is fixedly arranged in the water receiving tank, and the partition plate divides the water receiving tank into a first water receiving tank and a second water receiving tank;
the first water receiving tank is positioned on one side, far away from the middle part of the beam body, of the partition plate, a first filter screen is arranged in the first water receiving tank in a transverse mode, the first filter screen is fixedly connected with the middle part of the inner wall of the first water receiving tank, a first accommodating tank used for accommodating the water pipe is arranged inside the first filter screen, a spring, an electromagnet and a permanent magnet are arranged at the bottom of the first accommodating tank, the water pipe is enabled to have an upward moving trend through the spring, the electromagnet is arranged at the bottom of the first accommodating tank and is electrically connected with the control system, the permanent magnet is arranged at the bottom of the water pipe, a plurality of second accommodating tanks extending downwards and communicated with the first accommodating tank are arranged at the top of the first filter screen, and the plurality of second accommodating tanks and the plurality of spray heads are arranged in a one-to-one correspondence manner;
the second water receiving tank is positioned on one side of the partition plate close to the middle part of the beam body, a second filter screen arranged along the transverse direction is installed in the second water receiving tank, the second filter screen is fixedly connected with the top of the inner wall of the second water receiving tank, and the second filter screen is positioned below the first filter screen;
the cleaning mechanism further comprises a scraper which is longitudinally arranged and located on the beam body and is far away from the middle of the beam body, the upper end of the scraper is fixedly connected with the moving plate, and the lower end of the scraper is in contact with the top of the first filter screen.
2. The bridge bottom pipe cleaning device of claim 1, wherein: the top of the moving box is in contact with the bottom of the beam body.
3. The bridge bottom pipe cleaning device of claim 1, wherein: the driving wheel is a friction wheel, and the friction wheel is in rolling contact with the side wall of the beam body.
4. The bridge bottom pipe cleaning device of claim 1, wherein: the plurality of spray heads are arranged at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110052550.8A CN112893203B (en) | 2021-01-15 | 2021-01-15 | Bridge bottom pipeline cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110052550.8A CN112893203B (en) | 2021-01-15 | 2021-01-15 | Bridge bottom pipeline cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112893203A CN112893203A (en) | 2021-06-04 |
| CN112893203B true CN112893203B (en) | 2022-05-27 |
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ID=76114389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110052550.8A Active CN112893203B (en) | 2021-01-15 | 2021-01-15 | Bridge bottom pipeline cleaning device |
Country Status (1)
| Country | Link |
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| CN (1) | CN112893203B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727259B (en) * | 2015-03-25 | 2015-10-28 | 楼国华 | Be provided with the municipal Bridge guardrail cleaning device bottom V-type and using method thereof |
| CN206215894U (en) * | 2016-11-09 | 2017-06-06 | 天津易普永正科技有限公司 | A kind of die casting machine casting cleaning device |
| CN208613178U (en) * | 2018-06-19 | 2019-03-19 | 深圳市启沛实业有限公司 | A kind of new type auto spray system |
| CN111335134B (en) * | 2020-04-01 | 2020-12-11 | 山东淄博环宇桥梁模板有限公司 | Bridge of convenient nursing |
| CN112095535B (en) * | 2020-09-14 | 2022-11-22 | 海南路桥工程有限公司 | Quick cleaning device of bridge expansion joint |
| CN212331379U (en) * | 2020-11-02 | 2021-01-12 | 苏州三佳交通工程有限公司 | Automatic watering and spraying device for precast slab beam |
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2021
- 2021-01-15 CN CN202110052550.8A patent/CN112893203B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112893203A (en) | 2021-06-04 |
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