CN211285447U - Highway construction curing means - Google Patents

Highway construction curing means Download PDF

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Publication number
CN211285447U
CN211285447U CN201921711469.0U CN201921711469U CN211285447U CN 211285447 U CN211285447 U CN 211285447U CN 201921711469 U CN201921711469 U CN 201921711469U CN 211285447 U CN211285447 U CN 211285447U
Authority
CN
China
Prior art keywords
rubbish
vehicle body
bearing
dust
brush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201921711469.0U
Other languages
Chinese (zh)
Inventor
高景伟
张敏
尚为公
孟昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Communication Construction Maintenance Engineering Co ltd
Shaanxi Provincial Communication Construction Group Co
Original Assignee
Shaanxi Communication Construction Maintenance Engineering Co ltd
Shaanxi Provincial Communication Construction Group Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shaanxi Communication Construction Maintenance Engineering Co ltd, Shaanxi Provincial Communication Construction Group Co filed Critical Shaanxi Communication Construction Maintenance Engineering Co ltd
Priority to CN201921711469.0U priority Critical patent/CN211285447U/en
Application granted granted Critical
Publication of CN211285447U publication Critical patent/CN211285447U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a highway construction curing means belongs to highway health field. The device includes: a vehicle head and a vehicle body; the front end in the vehicle head is provided with a water tank and a touch display screen, and the lower end of the base is provided with a first rotary brush; a sliding rail is arranged at the top of the front end in the vehicle body, a dust collector is arranged at the tail end in the vehicle body, and a first bearing, a second bearing, a rotating hook and a second rotating brush are sequentially arranged at the lower end of the base; the bottom of the water tank is provided with an atomizing nozzle, and a water pump is arranged in the atomizing nozzle. The utility model discloses a scraper bowl will paste rubbish shovel on the road surface, utilize the accessory plate to push into the scraper bowl with rubbish, clean road surface dust and little rubbish through rotatory brush, utilize dust catcher to absorb dust and rubbish that rotatory brush cleaned up, grab through flexible machinery and grab big rubbish and get the scraper bowl, the rotatory big rubbish recycling bin of pouring its inside rubbish into of rethread scraper bowl to it is minimum to remain rubbish with the clean up messenger road surface of road surface rubbish, and then makes this device application range more extensive.

Description

Highway construction curing means
Technical Field
The utility model relates to a highway health field, in particular to highway construction curing means.
Background
The living environment of people is closely related to the hygiene. In cities, people pay more attention to the road sanitation, and sometimes the road sanitation can show the culture of one city, so that the road sanitation needs to be cleaned regularly.
At present, road sanitation is mainly cleaned by an environmental protection vehicle, and particularly, a dust collector brush is arranged in a base of the environmental protection vehicle to clean road garbage and recycle the garbage by using the dust collector. However, the environmental protection vehicle can only clean small garbage on the road surface, and when large-volume garbage such as bricks, plastic bags, plastic bottles and the like is encountered, the garbage can not be recycled; secondly, when the fallen leaves are stuck on the road surface, the environmental protection vehicle cannot clean the fallen leaves stuck on the road surface.
SUMMERY OF THE UTILITY MODEL
In order to more quick effectual clean highway health, the utility model provides a highway construction curing means. The device comprises: a vehicle head and a vehicle body; the front end in the vehicle head is provided with a water tank and a touch display screen, and the lower end of the base is provided with a first rotary brush; a sliding rail is arranged at the top of the front end in the vehicle body, a dust collector is arranged at the tail end in the vehicle body, and a first bearing, a second bearing, a rotating hook and a second rotating brush are sequentially arranged at the lower end of the base;
an atomizing nozzle is arranged at the bottom of the water tank, and a water pump is arranged in the atomizing nozzle; a control system is arranged in the touch display screen; an electric push rod is arranged on the slide rail, and a telescopic mechanical claw is connected to the electric push rod; the dust collector comprises a dust collection pipeline and a small garbage recycling bin, one end of the dust collection pipeline penetrates through the vehicle body base, and the small garbage recycling bin is arranged at the other end of the dust collection pipeline; an auxiliary plate is arranged on the first bearing; a bucket is arranged on the second bearing; a large garbage recycling bin is arranged on the rotary hook;
the touch display screen, the first rotary brush, the dust collector, the first bearing, the second bearing, the rotary hook, the second rotary brush, the water pump, the electric push rod and the telescopic mechanical gripper are all in communication connection with the control system.
Preferably, the dust collector further comprises a dust collection plate, and the dust collection plate is connected with one end, penetrating through the vehicle body base, of the dust collection pipeline.
Preferably, the second rotating brush is located on a side of the suction plate.
Preferably, a partition plate is further arranged inside the vehicle body, and the partition plate and the right side face of the large garbage recycling bin are located on the same plane.
Preferably, the top of the front end in the vehicle body is further provided with a camera, the camera is located on the left side of the sliding rail, and the camera is in communication connection with the control system.
Preferably, the first rotating brush and the second rotating brush are provided in plural numbers.
The utility model provides a technical scheme's beneficial effect is:
firstly, the utility model discloses a scraper bowl can be with pasting the rubbish on the road surface and shoveling, utilize the accessory plate rotation can push into the scraper bowl with the rubbish that piles up in front of the scraper bowl, can clean dust and little rubbish on the road surface through rotatory brush, utilize the dust catcher can clean dust and rubbish absorption that rotatory brush is in the same place, grab through flexible machinery and can snatch big rubbish and throw into the scraper bowl, and then can pour its inside rubbish into big rubbish collection box through the scraper bowl rotation, thereby realize clearing up the various rubbish on road surface, make road surface remain rubbish to the minimum, and then make this device application range more extensive; secondly, shoot the road surface through the camera, utilize control system with the signal imaging on touch display screen, the staff can be through looking over touch display screen, timely grasp the road surface rubbish condition to make things convenient for the staff to clear up the road surface rubbish more.
Drawings
FIG. 1 is a schematic illustration of a highway maintenance device according to an exemplary embodiment;
FIG. 2 is a schematic view of a mounting structure of a vacuum cleaner within a vehicle body according to an exemplary embodiment;
FIG. 3 is a schematic structural view of a dust extractor shown in accordance with an exemplary embodiment;
fig. 4 is a schematic view illustrating a mounting structure of the touch display screen in the vehicle head according to an exemplary embodiment.
Reference numerals: the device comprises a vehicle head-1, a vehicle body-2, a water tank-3, a touch display screen-4, a first rotary brush-5, a slide rail-6, a dust collector-7, a first bearing-8, a second bearing-9, a rotary hook-10, a second rotary brush-11, an atomizing spray head-12, a water pump-13, a control system-14, an electric push rod-15, a telescopic mechanical grab-16, a dust collection pipeline-17, a small garbage collection box-18, an auxiliary plate-19, a bucket-20, a large garbage collection box-21, a dust collection plate-22, a partition plate-23 and a camera-24.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The use of the terms "upper", "lower", "right" and the like in the present invention is for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1-4, the present invention provides a highway maintenance device, comprising: a vehicle head 1 and a vehicle body 2; the front end in the headstock 1 is provided with a water tank 3 and a touch display screen 4, and the lower end of the base is provided with a first rotary brush 5; a slide rail 6 is arranged at the top of the front end in the vehicle body 2, a dust collector 7 is arranged at the tail end in the vehicle body, and a first bearing 8, a second bearing 9, a rotating hook 10 and a second rotating brush 11 are sequentially arranged at the lower end of the base;
an atomizing nozzle 12 is arranged at the bottom of the water tank 3, and a water pump 13 is arranged in the atomizing nozzle 12; a control system 14 is arranged in the touch display screen 4; an electric push rod 15 is arranged on the slide rail 6, and a telescopic mechanical gripper 16 is connected to the electric push rod 15; the dust collector 7 comprises a dust collection pipeline 17 and a small garbage recycling tank 18, one end of the dust collection pipeline 17 penetrates through the base of the vehicle body 2, and the other end of the dust collection pipeline is provided with the small garbage recycling tank 18; an auxiliary plate 19 is arranged on the first bearing 8; a bucket 20 is arranged on the second bearing 9; the rotary hook 10 is provided with a large garbage recycling bin 21;
the touch display screen 4, the first rotary brush 5, the dust collector 7, the first bearing 8, the second bearing 9, the rotary hook 10, the second rotary brush 11, the water pump 13, the electric push rod 15 and the telescopic mechanical grab 16 are all in communication connection with the control system 14.
It should be noted that the control system 14 can control the first rotating brush 5 and the second rotating brush 11 to rotate and that the control system 14 can also control them to be detached from the ground when the use of the first rotating brush 5 and the second rotating brush 11 is not required. The control system 14 can control the electric push rod 15 to slide left and right in the slide rail 6 and stretch up and down to drive the telescopic mechanical gripper 16 connected to the electric push rod 15 to move left and right and up and down, so as to accurately grip the garbage with large volume on the road into the bucket 20, wherein the specific working principle of the left and right sliding and up and down stretching of the electric push rod 15 refers to the prior art. The dust collector 7 is provided with a fan (not shown) therein, and when the fan is operated, the air in the dust collection pipe 17 generates a negative pressure, so that the road garbage is sucked from one end of the dust collection pipe 17 and discharged from the other end into the small garbage collection box 18.
First bearing 8 and second bearing 9 alternate in the shaft hole (not shown in the figure) on automobile body 2 base, and be provided with drive element (not shown in the figure) in first bearing 8 and the second bearing 9, first bearing 8, second bearing 9 and control system 14 carry out communication connection, mean that the drive element that sets up in first bearing 8, the second bearing 9 carries out communication connection with control system 14, therefore control system 14 can control first bearing 8, the drive element that sets up in the second bearing 9 drives first bearing 8, the second bearing 9 rotates, first bearing 8 is rotatory can drive fixed connection's accessory plate 19 rotatory, the rotation of second bearing 9 can drive fixed connection's scraper bowl 20 rotatory in the same way. In addition, the distance between the first bearing 8 and the second bearing 9 should be set properly, specifically, when the bucket 20 rotates along with the second bearing 9, the front end of the bucket 20 does not touch the first bearing 8, and when the front end of the bucket 20 is closest to the first bearing 8 during the rotation process, the electric push rod 15 moves downwards, and the telescopic mechanical grab 16 can completely enter the bucket 20, so that when garbage is accumulated at the front end of the bucket 20, the auxiliary plate 19 rotates to push the garbage into the bucket 20, and when the large garbage is accumulated at the front end of the bucket 20, the telescopic mechanical grab 16 can throw the grabbed large garbage into the bucket 20 after the large garbage is grabbed and separated from the ground by the telescopic mechanical grab 16 and the bucket 20 rotates to a proper position, and then the garbage is sent into the large garbage recycling bin 21 by controlling the rotation of the bucket 20.
The large waste collection box 21 can be hung on the rotary hook 10, and when the waste in the large waste collection box 21 needs to be dumped, the control system 14 can control the rotary hook 10 to move downwards to contact the bottom of the large waste collection box 21 with the ground, then the cleaner can manually separate the rotary hook 10 from the large waste collection box and dump the waste in the large waste collection box 21, and after the waste is dumped completely, the rotary hook 10 is manually inserted through a small hole (not shown) formed in the large waste collection box 21, the rotary hook 10 is controlled to move upwards to lift the large waste collection box 12 and separate the large waste collection box from the ground, and the large waste collection box is hung on the rotary hook 10. The water pump 13 can convey the water in the water tank 3 to the atomizer 12, and the atomizer 12 sprays the water on the road surface in a water mist state, so that no dust is raised when the rotary brush cleans the road surface.
For example, when the vehicle is started, the worker can click the control part for controlling the water pump 13 on the touch display screen 4, and simultaneously the touch display screen 4 sends an instruction to the control system 14, the control system 14 receives the instruction and sends a related instruction to the water pump 13, and the water pump 13 runs immediately after receiving the instruction sent by the control system 14, so that water mist is sprayed from the water mist spray head 12 and falls on the ground; similarly, when the touch screen 4 is clicked to control the first rotating brush 5, the second rotating brush 11, the fan (not shown), the driving element (not shown), the rotating hook 10, the electric push rod 15, and the telescopic mechanical grab 16, the control system 14 can control the components in communication with the rotating hook 10 to perform related operations.
The communication connection is a component in communication with the control system 14, and can send and receive signals to and from the control system 14, and the control system 14 can analyze and judge the received command.
It should be further noted that the touch display screen 4, the first rotating brush 5, the rotating hook 10, the second rotating brush 11, the control system 14, the fan (not shown), the driving element (not shown), the water pump 13, the electric push rod 15 and the telescopic mechanical grab 16 are all electrically connected to a power supply device (not shown) of the vehicle; in this way, after the vehicle is started, the power supply device of the vehicle can supply power to the components, so that the working requirements of the components are met.
Furthermore, the dust collector 7 further comprises a dust collection plate 22, and the dust collection plate 22 is connected with one end of the dust collection pipeline 7 penetrating through the base of the vehicle body 2. It should be noted that the shape of the dust suction plate 22 may be similar to a horn shape, so that when the dust suction machine 7 is in operation, the amount of air entering the interior of the dust suction plate can be increased, and thus more garbage can be sucked.
Further, the second rotating brush 11 is located at the side of the dust suction plate 22. It should be noted that some rubbish is easy to be adsorbed on the road surface, and when the position of the second rotary brush 11 and the dust collection plate 22 is far away, the second rotary brush 11 sweeps the rubbish, the swept rubbish is away from the dust collection machine 7 by a certain distance, and can not be timely sucked by the dust collection machine 7, and can be adsorbed on the road surface again, when the dust collection machine 7 reaches the position of the rubbish, it is difficult to suck the rubbish adsorbed on the road surface, therefore the utility model discloses in locate the second rotary brush 11 at the side of the dust collection plate 22, when the second rotary brush 11 is rotatory, when sweeping the rubbish adsorbed on the road surface, the swept rubbish can be timely sucked by the dust collection machine 7, and the swept rubbish can not be adsorbed on the road surface again, so that the dust collection machine 7 can easily suck the rubbish, and the work efficiency of the dust collection machine 7 is greatly improved.
Furthermore, a partition plate 23 is further arranged inside the vehicle body 2, and the partition plate 23 and the right side surface of the large garbage collection box 21 are on the same plane. It should be noted that the inside of the vehicle body 2 is a hollow structure, and the vehicle body 2 on the left side of the partition plate 23 has no bottom plate, that is, no blocking is provided between the first bearing 8, the second bearing 9 and the rotating hook 10, so that the bucket 20 can rotate up and down to dump the garbage into the large garbage recycling bin 21, and the partition plate 23 can block the garbage splashed out when the bucket 20 rotates, so that the splashed garbage slides into the large garbage recycling bin 21 along the surface of the partition plate 23 after hitting the partition plate 23, and meanwhile, the arrangement of the partition plate 23 also avoids the pollution and damage of the splashed garbage to the inside of the vehicle body 2.
Further, a camera 24 is further arranged at the top of the front end in the vehicle body 2, the camera 24 is located on the left side of the slide rail 6, and the camera 24 is in communication connection with the control system 14. It should be noted that the camera 24 is used for taking pictures of the road surface inside the vehicle body 2 and around the bucket 20, and converting the picture signals transmitted by the camera into images through the control system 14 to be displayed on the screen of the touch display screen 4, so that the worker can conveniently perform related operations according to the images. For example, when a worker finds that large garbage exists in front of the bucket 20 through the touch display screen 4, the worker can click the touch display screen 4 to control the control of the electric push rod 15 to move downwards, and when the worker finds that the lower end of the telescopic mechanical claw 16 is in contact with the large garbage on the touch display screen 4, the worker controls the electric push rod 15 to stop moving downwards; then, a worker clicks a control part for controlling the telescopic mechanical claw 16 on the touch display screen 4 to open the control part, then clicks a control part for controlling the electric push rod 15 to perform fine adjustment, so that the large garbage is in the telescopic mechanical claw 16, at the moment, the electric push rod 15 is controlled to stop moving, and then the telescopic mechanical claw 16 is controlled to grasp the large garbage; then, the operator controls the electric push rod 15 to move upwards to separate the large garbage from the ground, and then controls the bucket 20 to rotate to enable the front end of the bucket 20 to be closest to the first bearing 8, the bucket 20 is controlled to stop rotating, and at the moment, the telescopic mechanical grab 16 is controlled to be opened to enable the garbage to fall into the bucket; next, the worker controls the bucket 20 to rotate to dump the garbage into the large garbage collection box 21, and then controls the bucket 20 to rotate in the reverse direction to contact the ground, and continues to shovel the garbage stuck to the road surface.
Further, the number of the first rotating brushes 5 and the second rotating brushes 11 is provided in plurality. The number of the first rotating brushes 5 and the second rotating brushes 11 is not particularly limited, and is set according to the size of the vehicle and the requirement of the road surface cleaning degree in the specific implementation; in the present invention, 2 first rotating brushes 5 are taken as an example, and 3 second rotating brushes 11 are taken as an example.
The complete work flow of the road maintenance device can be as follows: a worker starts the vehicle, clicks controls of all components on the touch display screen 4 to control the dust collector 7 to start working, controls the first rotating brush 5 and the second rotating brush 11 to rotate and move downwards to be in contact with the ground, controls the bucket 20 to be in contact with the ground, controls the water pump 13 to operate, and controls the camera 24 to start shooting;
then, the worker starts the vehicle, when the worker observes that the garbage is accumulated in front of the bucket 20 through the touch display screen 4, the auxiliary plate 19 is controlled to rotate, the garbage is pushed into the bucket 20, and then the auxiliary plate 19 is controlled to return to the original position; then, when the worker observes that large garbage exists in front of the bucket 20 through the touch display screen 4, the large garbage is grabbed by controlling the electric push rod 15 and the telescopic mechanical grab 16, the bucket 20 is controlled to rotate to a proper position and stop, then the telescopic mechanical grab 16 is controlled to open to throw the garbage into the bucket 20, then the bucket 20 is controlled to rotate to pour the garbage into the large garbage recycling bin 21, the bucket 20 is controlled to rotate reversely to contact with the ground, and the cleaning and shoveling of the garbage stuck to the road surface are continued;
when workers find that the garbage in the large garbage can recycling bin 21 is full by observing the touch display screen 4, the workers drive the vehicle to a rest area and stop the vehicle, dump the garbage in the large garbage recycling bin 21, open the vehicle door at the tail of the vehicle body 2 and dump the garbage in the small garbage recycling bin 18;
when the worker turns off the vehicle, both the bucket 20 and the auxiliary plate 19 return to the initial positions.
It should be noted that the initial position of the auxiliary plate 19 is closely attached to the joint of the vehicle head 1 and the vehicle body 2; the initial position of bucket 20 is reversed on shelf 23; both return to the initial position each time the vehicle is turned off.
It is worth explaining, firstly, the utility model discloses a scraper bowl can be with pasting the rubbish on the road surface shovel, utilize the accessory plate rotation can push into the scraper bowl with piling up the rubbish in front of the scraper bowl in, can clean dust and little rubbish on the road surface through rotatory brush, utilize the dust catcher can suck dust and rubbish that rotatory brush cleaned together, grab through flexible machinery and can snatch big rubbish and throw into the scraper bowl, and then can pour its inside rubbish into big rubbish collection box through the scraper bowl rotation, thereby realize clearing up the various rubbish on road surface, make road surface remain rubbish to minimum, and then make this device application range more extensive; secondly, shoot the road surface through the camera, utilize control system with the signal imaging on touch display screen, the staff can be through looking over touch display screen, timely grasp the road surface rubbish condition to make things convenient for the staff to clear up the road surface rubbish more.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (6)

1. A highway construction maintenance device, characterized in that the device includes: a vehicle head (1) and a vehicle body (2); a water tank (3) and a touch display screen (4) are arranged at the front end in the vehicle head (1), and a first rotary brush (5) is arranged at the lower end of the base; a slide rail (6) is arranged at the top of the front end in the vehicle body (2), a dust collector (7) is arranged at the tail end in the vehicle body, and a first bearing (8), a second bearing (9), a rotating hook (10) and a second rotating brush (11) are sequentially arranged at the lower end of the base;
an atomizing nozzle (12) is arranged at the bottom of the water tank (3), and a water pump (13) is arranged in the atomizing nozzle (12); a control system (14) is arranged in the touch display screen (4); an electric push rod (15) is arranged on the slide rail (6), and a telescopic mechanical claw (16) is connected to the electric push rod (15); the dust collector (7) comprises a dust collection pipeline (17) and a small garbage recycling box (18), one end of the dust collection pipeline (17) penetrates through the base of the vehicle body (2), and the small garbage recycling box (18) is arranged at the other end of the dust collection pipeline; an auxiliary plate (19) is arranged on the first bearing (8); a bucket (20) is arranged on the second bearing (9); a large garbage recycling bin (21) is arranged on the rotary hook (10);
wherein, touch display screen (4), first rotatory brush (5), dust catcher (7), first bearing (8), second bearing (9), rotatory couple (10), rotatory brush (11) of second, water pump (13), electric putter (15) with flexible machinery is grabbed (16) and all with control system (14) carry out communication connection.
2. A road construction maintenance device according to claim 1, wherein the dust collector (7) further comprises a dust collection plate (22), and the dust collection plate (22) is connected with one end of the dust collection pipeline (17) penetrating through the base of the vehicle body (2).
3. A road construction maintenance device according to claim 2, wherein said second rotary brush (11) is located at the side of said suction plate (22).
4. A road construction maintenance device according to claim 1, characterized in that a partition plate (23) is further arranged inside the vehicle body (2), and the partition plate (23) is positioned on the same plane with the right side surface of the large garbage recycling bin (21).
5. The highway construction maintenance device according to claim 1, wherein a camera (24) is further arranged at the top of the inner front end of the vehicle body (2), the camera (24) is located on the left side of the sliding rail (6), and the camera (24) is in communication connection with the control system (14).
6. A road construction maintenance device according to claim 1, characterized in that the number of said first rotating brushes (5) and said second rotating brushes (11) is provided in plurality.
CN201921711469.0U 2019-10-14 2019-10-14 Highway construction curing means Expired - Fee Related CN211285447U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921711469.0U CN211285447U (en) 2019-10-14 2019-10-14 Highway construction curing means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921711469.0U CN211285447U (en) 2019-10-14 2019-10-14 Highway construction curing means

Publications (1)

Publication Number Publication Date
CN211285447U true CN211285447U (en) 2020-08-18

Family

ID=72013060

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921711469.0U Expired - Fee Related CN211285447U (en) 2019-10-14 2019-10-14 Highway construction curing means

Country Status (1)

Country Link
CN (1) CN211285447U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113026655A (en) * 2021-03-27 2021-06-25 蔡良云 Recreation ground train track cleaning robot

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113026655A (en) * 2021-03-27 2021-06-25 蔡良云 Recreation ground train track cleaning robot

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200818

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CF01 Termination of patent right due to non-payment of annual fee