CN108277767B - High-efficient road surface belt cleaning device - Google Patents
High-efficient road surface belt cleaning device Download PDFInfo
- Publication number
- CN108277767B CN108277767B CN201810058752.1A CN201810058752A CN108277767B CN 108277767 B CN108277767 B CN 108277767B CN 201810058752 A CN201810058752 A CN 201810058752A CN 108277767 B CN108277767 B CN 108277767B
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- China
- Prior art keywords
- sludge
- vehicle body
- brush plate
- communicated
- sewage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- 239000010802 sludge Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000010865 sewage Substances 0.000 claims abstract description 34
- 238000005086 pumping Methods 0.000 claims abstract description 25
- 239000007921 spray Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000001680 brushing effect Effects 0.000 claims abstract description 10
- 238000011010 flushing procedure Methods 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000011324 bead Substances 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/10—Hydraulically loosening or dislodging undesirable matter; Raking or scraping apparatus ; Removing liquids or semi-liquids e.g., absorbing water, sliding-off mud
- E01H1/101—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers
- E01H1/103—Hydraulic loosening or dislodging, combined or not with mechanical loosening or dislodging, e.g. road washing machines with brushes or wipers in which the soiled loosening or washing liquid is removed, e.g. by suction
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
- Brushes (AREA)
Abstract
The invention discloses a high-efficiency pavement cleaning device, which comprises a vehicle body, a brushing mechanism, a flushing mechanism, a sludge collecting mechanism and a sewage utilizing mechanism, wherein the brushing mechanism is arranged on the vehicle body; a brushing mechanism is arranged below the central axis of the vehicle body and comprises a brush plate, and a brush plate is arranged below the vehicle body; the front end of the brush plate is provided with a transverse spray pipe, and water spray heads are uniformly distributed on the surface of one side of the transverse spray pipe, which is close to the brush plate; a sludge collecting mechanism is arranged on the rear side of the brush plate; the sludge box is communicated with a sewage utilization mechanism. According to the invention, the brush plate and the sprinkler bead which move back and forth are arranged, so that the ground is washed and scrubbed at the same time, the cleaning effect is improved, and the cleaning efficiency is improved; the sludge collecting device is provided with the collecting roller, the guide block and the sludge box, and is used for collecting sludge, realizing the separation of the sludge and sewage and preventing the sludge from blocking a sewer; the sewage is filtered by the sewage tank provided with the material pumping pump and the filter plate and the overflow pipe, so that the reuse is realized and the water is saved.
Description
Technical Field
The invention relates to the field of municipal machinery, in particular to a high-efficiency road surface cleaning device.
Background
The environmental sanitation sprinkler has the functions of water transportation, spraying, flushing and emergency fire fighting, and can automatically adjust the water volume (the spraying is in the shape of column, fog and rough rain); for the sidewalks on two sides of the road, the accumulated dust is accumulated day by day and month and is mixed with other sewage, so that a plank knot layer which is difficult to clean layer by layer is hardened on the road surface, the road surface is cleaned by a high-pressure water gun in the traditional means, and the cleaning effect is good.
However, at the abluent in-process of high-pressure squirt, can produce a large amount of sludge water, can flow everywhere along the road surface, still need the manual work to clean, high-pressure squirt in addition when the operation, the water droplet presss from both sides mud and splashes, pollutes periphery and vehicle, causes the pedestrian and is difficult to current, and sludge water gets into the sewer in addition, blocks up the sewer easily, and the abluent mode of high-pressure squirt in addition, very extravagant water resource needs a more water-saving and has the belt cleaning device who collects the function to sewage.
Disclosure of Invention
The invention aims to provide a high-efficiency road surface cleaning device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-efficiency road surface cleaning device comprises a vehicle body, a brushing mechanism, a flushing mechanism, a sludge collecting mechanism and a sewage utilizing mechanism; a brushing mechanism is arranged below the central axis of the vehicle body and comprises a brush plate, a screw rod and a first driving motor; a brush plate is arranged below the vehicle body; the top of the brush plate is fixedly connected with a sliding rod, the sliding rod penetrates through a bottom plate of the vehicle body and extends into the vehicle body, and the bottom plate of the vehicle body is provided with a sliding chute which is transversely arranged; the top of the sliding rod is fixedly connected with a movable sleeve, the movable sleeve is in threaded connection with a screw rod, the screw rod extends to the right side of the vehicle body, the position, located on the outer side of the vehicle body, of the screw rod is fixedly provided with diagonally symmetrical semi-conical gears, and driving bevel gears are arranged between the semi-conical gears; the driving bevel gear is fixedly connected with a first driving shaft, and the first driving shaft is connected with a first driving motor; the front end of the brushing mechanism is provided with a washing mechanism, and the washing mechanism comprises a water spray head, a transverse spray pipe, a high-pressure water pump and a water storage tank; the front end of the brush plate is provided with a transverse spray pipe, the surface of one side of the transverse spray pipe, which is close to the brush plate, is uniformly distributed with water spray heads, the transverse spray pipe is communicated with a high-pressure water pump through a water outlet pipe, and the high-pressure water pump is communicated with a water storage tank; the rear side of the brush plate is provided with a sludge collecting mechanism, and the sludge collecting mechanism comprises a collecting roller and a sludge box; the collecting roller is a horizontally arranged brush roller, the collecting roller is rotatably connected with a supporting plate through a rotating shaft, and the rotating shaft extends to the outer side of the supporting plate and is connected with a second driving motor; a sludge box is arranged at the rear side of the collecting roller, a guide block is arranged between the sludge box and the collecting roller, an arc-shaped surface is arranged on one side of the guide block close to the collecting roller, a blanking channel is obliquely arranged on the guide block, and the blanking channel is communicated with the sludge box; the sludge tank is communicated with a sewage utilization mechanism, and the sewage utilization mechanism comprises a sludge pumping pipe, a material pumping pump and a sewage tank; the sludge tank is communicated with a sludge pumping pipe, the sludge pumping pipe is communicated with a material pumping pump, and the material pumping pump is communicated with a sewage tank; the sewage tank is internally provided with a plurality of groups of filter plates, the position of the sewage tank above the filter plates is communicated with an overflow pipe, and the overflow pipe is communicated with the water storage tank.
As a further scheme of the invention: the brush plate is a cuboid with bristles uniformly distributed on the lower surface.
As a further scheme of the invention: the sliding rod is connected with the sliding groove in a sliding mode.
As a further scheme of the invention: the screw rod is rotatably connected with the inner wall of the vehicle body through a bearing.
As a further scheme of the invention: the first driving motor is fixedly connected with the outer wall of the vehicle body through a bolt; the outside cover of first driving motor is equipped with the protection casing, protection casing and automobile body fixed connection.
As a further scheme of the invention: the vehicle body is of a box structure.
As a further scheme of the invention: the blanking channel is a strip-shaped through groove which is transversely arranged.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the brush plate and the sprinkler bead which move back and forth are arranged, so that the ground is washed and scrubbed at the same time, the cleaning effect is improved, and the cleaning efficiency is improved; the sludge collecting device is provided with the collecting roller, the guide block and the sludge box, and is used for collecting sludge, realizing the separation of the sludge and sewage and preventing the sludge from blocking a sewer; the sewage is filtered by the sewage tank provided with the material pumping pump and the filter plate and the overflow pipe, so that the reuse is realized and the water is saved.
Drawings
FIG. 1 is a schematic structural diagram of a high-efficiency road surface cleaning device;
FIG. 2 is a left side schematic view of the high-efficiency road surface cleaning device;
FIG. 3 is a schematic structural view of a collecting roller in the high-efficiency road surface cleaning device;
fig. 4 is a schematic structural diagram of a guide block in the high-efficiency road surface cleaning device.
In the figure: 1-a vehicle body; 101-a chute; 2-a brush plate; 3-a slide bar; 4-moving the sleeve; 5-a screw rod; 6-half bevel gear; 7-drive bevel gear; 8-a first drive shaft; 9-a first drive motor; 10-a protective cover; 11-a transverse nozzle; 12-a sprinkler head; 13-water outlet pipe; 14-high pressure water pump; 15-water storage tank; 16-a material guide block; 1601-a blanking channel; 17-a sludge box; 18-a mud pumping pipe; 19-a pump; 20-a sewage tank; 21-a filter plate; 22-overflow pipe; 23-a collecting roller; 24-a rotating shaft; 25-a support plate; 26-a second drive motor; 27-roller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in an embodiment of the present invention, an efficient road surface cleaning device includes a vehicle body 1, a brushing mechanism, a flushing mechanism, a sludge collecting mechanism, and a sewage utilizing mechanism; the cleaning device is characterized in that the vehicle body 1 is of a box body structure, a cleaning mechanism is arranged below the central axis of the vehicle body 1 and comprises a brush plate 2, a screw rod 5 and a first driving motor 9; a brush plate 2 is arranged below the vehicle body 1, and the brush plate 2 is a cuboid with bristles uniformly distributed on the lower surface; the top of the brush plate 2 is fixedly connected with a sliding rod 3, the sliding rod 3 penetrates through the bottom plate of the vehicle body 1 and extends into the vehicle body 1, the bottom plate of the vehicle body 1 is provided with a sliding chute 101 which is transversely arranged, and the sliding chute 101 is a through groove; the sliding rod 3 is in sliding connection with the sliding groove 101, the top of the sliding rod 3 is fixedly connected with a movable sleeve 4, the movable sleeve 4 is in threaded connection with a screw rod 5, the screw rod 5 is rotatably connected with the inner wall of the vehicle body 1 through a bearing, the screw rod 5 extends to the right side of the vehicle body 1, half bevel gears 6 which are in diagonal symmetry are fixed at the positions, located on the outer side of the vehicle body 1, of the screw rod 5, the half bevel gears 6 are bevel gears with half bevel teeth at the circumferential edges, a driving bevel gear 7 is arranged between the half bevel gears 6, and the driving bevel gear 7 is meshed with one half bevel gear; the driving bevel gear 7 is fixedly connected with a first driving shaft 8, the first driving shaft 8 is connected with a first driving motor 9, and the first driving motor 9 is fixedly connected with the outer wall of the vehicle body 1 through a bolt; a protective cover 10 is sleeved on the outer side of the first driving motor 9, and the protective cover 10 is fixedly connected with the vehicle body 1; the first driving motor 9 is electrically connected with an external power supply, the first driving motor 9 drives the driving bevel gear 7 to rotate through the first driving shaft 8, the driving bevel gear 7 drives the screw rod 5 to rotate in a periodic forward rotation and a periodic reverse rotation through the semi-circular bevel gears 6 which are in diagonal symmetry, and further drives the movable sleeve 4 and the brush plate 2 to do transverse reciprocating motion, so that the ground is scrubbed, and a hardened garbage layer on the road surface is cleaned; the front end of the brushing mechanism is provided with a washing mechanism, and the washing mechanism comprises a water spraying head 12, a transverse spraying pipe 11, a high-pressure water pump 14 and a water storage tank 15; the front end of the brush plate 2 is provided with a transverse spray pipe 12, the transverse spray pipe 12 is fixedly connected with the bottom of the vehicle body 1, the surface of one side of the transverse spray pipe 12 close to the brush plate 2 is uniformly distributed with water spray heads 12, the transverse spray pipe 12 is communicated with a high-pressure water pump 14 through a water outlet pipe 13, and the high-pressure water pump 14 is fixedly connected with the inner wall of the vehicle body 1 through bolts; the high-pressure water pump 14 is communicated with a water storage tank 15, and the water storage tank 15 is fixedly connected with the vehicle body 1; the high-pressure water pump 14 is electrically connected with an external power supply, and after pumping water in the water storage tank 15 to the transverse spray pipe 11, the high-pressure water pump 14 sprays the water out of the spray head 11 to wash the road surface, so that the washing effect is improved, and meanwhile, sludge is pushed to the rear side of the vehicle body 1; the rear side of the brush plate 2 is provided with a sludge collecting mechanism which comprises a collecting roller 23 and a sludge box 17; the collecting roller 23 is a horizontally arranged brush roller, the collecting roller 23 is rotatably connected with a supporting plate 25 through a rotating shaft 24, and the supporting plate 25 is fixedly connected with the bottom of the vehicle body 1; the rotating shaft 24 extends to the outer side of the supporting plate 25 and is connected with a second driving motor 26, and the second driving motor 26 is fixedly connected with the supporting plate 25 through bolts; a sludge box 17 is arranged on the rear side of the collecting roller 23, a guide block 16 is arranged between the sludge box 17 and the collecting roller 23, an arc-shaped surface is arranged on one side, close to the collecting roller 23, of the guide block 16, a blanking channel 1601 is obliquely arranged on the guide block 16, the blanking channel 1601 is a strip-shaped through groove transversely arranged, and the blanking channel 1601 is communicated with the sludge box 17; the sludge tank 17 is communicated with a sewage utilization mechanism, and the sewage utilization mechanism comprises a sludge pumping pipe 18, a material pumping pump 19 and a sewage tank 20; the sludge tank 17 is communicated with a sludge pumping pipe 18, the sludge pumping pipe 18 is communicated with a material pumping pump 19, the material pumping pump 19 is communicated with a sewage tank 20, the material pumping pump 19 and the sewage tank 20 are fixedly connected with the inner wall of the vehicle body 1, the material pumping pump 19 is electrically connected with an external power supply, and the material pumping pump 19 pumps sludge water in the sludge tank 17 into the sewage tank 20; a plurality of groups of filter plates 21 are arranged in the sewage tank 20, an overflow pipe 22 is communicated with the position, above the filter plates 21, of the sewage tank 20, the overflow pipe 22 is communicated with the water storage tank 15, and filtered water enters the water storage tank 20 for cyclic utilization.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A high-efficiency road surface cleaning device comprises a vehicle body (1), a brushing mechanism, a flushing mechanism, a sludge collecting mechanism and a sewage utilizing mechanism; the automatic cleaning device is characterized in that a cleaning mechanism is arranged below the central axis of the vehicle body (1), and the cleaning mechanism comprises a brush plate (2), a screw rod (5) and a first driving motor (9); a brush plate (2) is arranged below the vehicle body (1); the top of the brush plate (2) is fixedly connected with a sliding rod (3), the sliding rod (3) penetrates through the bottom plate of the vehicle body (1) and extends into the vehicle body (1), and the bottom plate of the vehicle body (1) is provided with a sliding chute (101) which is transversely arranged; the top of the sliding rod (3) is fixedly connected with a movable sleeve (4), the movable sleeve (4) is in threaded connection with a screw rod (5), the screw rod (5) extends to the right side of the vehicle body (1), semi-conical gears (6) which are symmetrical in diagonal are fixed at the positions, located on the outer side of the vehicle body (1), of the screw rod (5), and driving bevel gears (7) are arranged between the semi-conical gears (6); the driving bevel gear (7) is fixedly connected with a first driving shaft (8), and the first driving shaft (8) is connected with a first driving motor (9); the front end of the brushing mechanism is provided with a washing mechanism, and the washing mechanism comprises a water spray head (12), a transverse spray pipe (11), a high-pressure water pump (14) and a water storage tank (15); a transverse spray pipe (11) is arranged at the front end of the brush plate (2), water spray heads (12) are uniformly distributed on the surface of one side, close to the brush plate (2), of the transverse spray pipe (11), the transverse spray pipe (11) is communicated with a high-pressure water pump (14) through a water outlet pipe (13), and the high-pressure water pump (14) is communicated with a water storage tank (15); a sludge collecting mechanism is arranged on the rear side of the brush plate (2), and comprises a collecting roller (23) and a sludge box (17); the collecting roller (23) is a horizontally arranged brush roller, the collecting roller (23) is rotatably connected with a supporting plate (25) through a rotating shaft (24), and the rotating shaft (24) extends to the outer side of the supporting plate (25) and is connected with a second driving motor (26); a sludge box (17) is arranged on the rear side of the collecting roller (23), a guide block (16) is arranged between the sludge box (17) and the collecting roller (23), an arc-shaped surface is arranged on one side, close to the collecting roller (23), of the guide block (16), a blanking channel (1601) is obliquely arranged on the guide block (16), and the blanking channel (1601) is communicated with the sludge box (17); the sludge tank (17) is communicated with a sewage utilization mechanism, and the sewage utilization mechanism comprises a sludge pumping pipe (18), a material pumping pump (19) and a sewage tank (20); the sludge tank (17) is communicated with a sludge pumping pipe (18), the sludge pumping pipe (18) is communicated with a material pumping pump (19), and the material pumping pump (19) is communicated with a sewage tank (20); a plurality of groups of filter plates (21) are arranged in the sewage tank (20), an overflow pipe (22) is communicated with the position, above the filter plates (21), of the sewage tank (20), and the overflow pipe (22) is communicated with the water storage tank (15).
2. A high-efficiency road surface cleaning device as claimed in claim 1, characterized in that the brush plate (2) is a cuboid whose lower surface is uniformly distributed with bristles.
3. A high-efficiency road surface cleaning device according to claim 1, characterized in that the sliding rod (3) is connected with the sliding chute (101) in a sliding way.
4. A high-efficiency road surface cleaning device as claimed in claim 1, characterized in that the screw rod (5) is rotatably connected with the inner wall of the vehicle body (1) through a bearing.
5. A high-efficiency road surface cleaning device as claimed in claim 1, characterized in that the first driving motor (9) is fixedly connected with the outer wall of the vehicle body (1) through bolts; the outer side of the first driving motor (9) is sleeved with a protective cover (10), and the protective cover (10) is fixedly connected with the vehicle body (1).
6. A high-efficiency road surface cleaning device as claimed in claim 1, characterized in that the vehicle body (1) is of a box structure.
7. The efficient road surface cleaning device as claimed in claim 1, wherein the blanking channel (1601) is a transversely arranged strip-shaped through groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058752.1A CN108277767B (en) | 2018-01-22 | 2018-01-22 | High-efficient road surface belt cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058752.1A CN108277767B (en) | 2018-01-22 | 2018-01-22 | High-efficient road surface belt cleaning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108277767A CN108277767A (en) | 2018-07-13 |
| CN108277767B true CN108277767B (en) | 2020-08-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810058752.1A Expired - Fee Related CN108277767B (en) | 2018-01-22 | 2018-01-22 | High-efficient road surface belt cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108277767B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108903839B (en) * | 2018-09-07 | 2021-05-18 | 曾金玉 | Household door-entering floor cleaning device |
| CN112814059A (en) * | 2020-12-24 | 2021-05-18 | 郑玉珠 | Sludge cleaning device and cleaning method for municipal engineering |
| CN113684782A (en) * | 2021-08-30 | 2021-11-23 | 广州吉杰士交通设施有限公司 | Maintenance device for railway track |
| CN115839063B (en) * | 2022-12-13 | 2023-10-20 | 石家庄冀青环保设备有限公司 | Dirt separation system of washing and sweeping vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205857104U (en) * | 2016-06-27 | 2017-01-04 | 无锡海升高压泵有限公司 | Multifunctional high pressure pump movable type cleaning equipment |
| CN206784269U (en) * | 2017-05-16 | 2017-12-22 | 四川亿尚呈科技有限公司 | Water attack road surface depression cavity, auxiliary round brush collecting dust-removing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101450204B1 (en) * | 2012-09-11 | 2014-10-13 | 최광준 | Side brush for road cleaning vehicle |
| CN205472795U (en) * | 2016-01-13 | 2016-08-17 | 烟台海德专用汽车有限公司 | Washing and sweeping vehicle with pottery membrane filter |
| CN206591476U (en) * | 2017-02-24 | 2017-10-27 | 福建海山机械股份有限公司 | A kind of high-pressure jet cleaning device and roadway pollution remove car |
| CN206752387U (en) * | 2017-05-05 | 2017-12-15 | 河南天翔新能源专用车有限公司 | A kind of high road sweeper of cleaning efficiency |
| CN107503311A (en) * | 2017-09-01 | 2017-12-22 | 郑州大学 | A kind of multi-functional municipal clearing apparatus |
-
2018
- 2018-01-22 CN CN201810058752.1A patent/CN108277767B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205857104U (en) * | 2016-06-27 | 2017-01-04 | 无锡海升高压泵有限公司 | Multifunctional high pressure pump movable type cleaning equipment |
| CN206784269U (en) * | 2017-05-16 | 2017-12-22 | 四川亿尚呈科技有限公司 | Water attack road surface depression cavity, auxiliary round brush collecting dust-removing device |
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| CN108277767A (en) | 2018-07-13 |
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