CN213596899U - Road cleaning device for highway environmental protection - Google Patents

Road cleaning device for highway environmental protection Download PDF

Info

Publication number
CN213596899U
CN213596899U CN202020523907.7U CN202020523907U CN213596899U CN 213596899 U CN213596899 U CN 213596899U CN 202020523907 U CN202020523907 U CN 202020523907U CN 213596899 U CN213596899 U CN 213596899U
Authority
CN
China
Prior art keywords
strip
pipe
inner cavity
fixedly arranged
shaped
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
CN202020523907.7U
Other languages
Chinese (zh)
Inventor
不公告发明人
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.)
Beijing Shibida Automobile Co ltd
Original Assignee
Beijing Shibida Automobile Co ltd
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 Beijing Shibida Automobile Co ltd filed Critical Beijing Shibida Automobile Co ltd
Priority to CN202020523907.7U priority Critical patent/CN213596899U/en
Application granted granted Critical
Publication of CN213596899U publication Critical patent/CN213596899U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Cleaning Of Streets, Tracks, Or Beaches (AREA)

Abstract

The utility model discloses a road cleaning device is used to highway environmental protection, include: a vehicle body; the box body is fixedly arranged at the top end of the vehicle body; the ash removal mechanism is arranged at the bottom end of the vehicle body; and the water mist spraying mechanism is arranged at the rear side of the box body. This road cleaning device is used in highway environmental protection through being provided with the outside blowout water smoke of the steerable first shower nozzle of controlling respectively of water smoke spraying mechanism and second shower nozzle to but effectual control is to the clean scope on road surface, with reduced the consumption degree to the energy, improved the device's practicality greatly.

Description

Road cleaning device for highway environmental protection
Technical Field
The utility model relates to a highway environmental protection technology field specifically is a road cleaning device is used to highway environmental protection.
Background
In recent years, due to the improvement of road grades and the increase of vehicles, particularly the rapid development of the tourism industry of China, the awareness of maintenance workers on road environmental protection is gradually improved, and in road maintenance operation, road cleaning is also a very important operation content;
although the environment-friendly sweeper used on the current highway can complete the cleaning work of the road surface, the cleaning range of the road surface is limited, so that a worker is required to drive the sweeper to move forwards and backwards, the energy consumption is increased, and the practicability is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a road cleaning device is used to highway environmental protection to it is limited to solve the clean scope of highway motor sweeper among the prior art at least, and then the energy resource consumption of increase, the relatively poor problem of practicality.
In order to achieve the above object, the utility model provides a following technical scheme: a road cleaning device for road environmental protection, comprising:
a vehicle body;
the box body is fixedly arranged at the top end of the vehicle body;
the ash removal mechanism is arranged at the bottom end of the vehicle body;
and the water mist spraying mechanism is arranged at the rear side of the box body.
Preferably, the ash removal mechanism includes: the exhaust fan is fixedly arranged on the front side of the bottom end of the inner cavity of the box body; the dust collection box is fixedly arranged at the bottom end of the inner cavity of the box body, and an air outlet of the exhaust fan is in threaded connection with one side of the dust collection box; the filter screen is detachably arranged in the inner cavity of the dust collection box; the first dust suction pipe is in threaded connection with one side of the dust collection box; the front side and the rear side of the dust collection box are both screwed with dust collection hoses; and the second dust suction pipe is in interference fit with one end of the dust suction hose.
Preferably, the ash removal mechanism further comprises: the dust suction device comprises a vehicle body, a first dust suction pipe, a strip shell, a second dust suction pipe and a dust suction pipe, wherein the strip shell is fixedly arranged at the bottom end of the vehicle body along the left-right direction, one end of the first dust suction pipe extends out of the bottom end of the vehicle body and is in threaded connection with the top end of the strip shell, and a first strip hole is formed in the bottom end of the strip shell; the left side and the right side of the strip-shaped shell are respectively inserted with a strip-shaped column, the inner side of each strip-shaped column is communicated with the inner cavity of the strip-shaped shell, one end of the second dust suction pipe extends out of the side wall of the box body and is in threaded connection with the top end of the strip-shaped column, and the bottom end of each strip-shaped column is provided with a second strip-shaped hole; the push plate is fixedly arranged on the rear side of the rolled strip-shaped column; the pneumatic cylinder, both ends are all fixed and are provided with the pneumatic cylinder about the rear side of bar shell, just the inboard fixed connection of one end and push pedal of pneumatic cylinder.
Preferably, the left side and the right side of the top end of the inner cavity of the strip-shaped shell are respectively provided with a sliding groove along the left-right direction, one part of the sliding block is inserted into the inner cavity of the sliding groove, and the other part of the sliding block is fixedly arranged at the top end of the strip-shaped column.
Preferably, the water mist spraying mechanism includes: the water tank is fixedly arranged on the rear side of the bottom end of the inner cavity of the box body; the mounting plate is fixedly arranged on the rear side of the bottom end of the vehicle body along the left-right direction; the strip-shaped frame is fixedly arranged on the rear side of the mounting plate, and the rear side of the strip-shaped frame is in a through shape; the first spraying pipe is fixedly arranged in the middle of the inner cavity of the strip-shaped frame; the rear side of the first spray pipe is sequentially screwed with a plurality of first spray heads from left to right; the electromagnetic valve is in threaded connection with the bottom end of the rear side of the water tank; one end of the first water outlet pipe is in threaded connection with the electromagnetic valve, and the other end of the first water outlet pipe extends into the inner cavity of the bar-shaped frame and is in threaded connection with the outer wall of the first spraying pipe.
Preferably, the water mist spraying mechanism further comprises: the water pump is fixedly arranged at the bottom end of the inner cavity of the box body; the water inlet of the water pump is connected with one end of the water inlet pipe in a threaded manner, and the other end of the water inlet pipe extends into the inner cavity of the water tank; the left side and the right side of the inner cavity of the strip-shaped frame are both fixedly provided with a second spraying pipe; the left end and the right end of the rear side of the second spraying pipe are respectively in threaded connection with a second spraying head; the second water outlet pipe is in threaded connection with a water outlet of the water pump; the distributive pipe is in interference fit with the outer wall of the second water outlet pipe, and the two ends of the distributive pipe extend into the inner cavity of the bar-shaped frame and are in threaded connection with the top end of the outer wall of the second spraying pipe.
Preferably, the second spray pipe is obliquely arranged from front to back to the outside.
Compared with the prior art, the beneficial effects of the utility model are that: this road cleaning device is used to highway environmental protection, can make the dust inhale into in bar shell and the bar post through being provided with deashing mechanism, and through first dust absorption pipe, second dust absorption pipe and dust absorption hose inhale into the dust collection box and collect, and can make the bar post remove out in the bar shell through being provided with pneumatic cylinder and push pedal, thereby can enlarge the clean scope to road surface dust and debris, spray the outside blowout water smoke of first shower nozzle of steerable first shower nozzle of control respectively of mechanism and second shower nozzle through being provided with the water smoke, thereby can effectual control the clean scope to the road surface, with the consumption degree to the energy that has reduced, the practicality of the device is greatly improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a rear view of the sectional structure of the box body of the present invention;
fig. 3 is a front sectional view of the present invention.
In the figure: 1. the dust cleaning device comprises a vehicle body, 2, a box body, 3, a dust cleaning mechanism, 31, an exhaust fan, 32, a dust collecting box, 33, a filter screen, 34, a first dust suction pipe, 35, a dust suction hose, 36, a second dust suction pipe, 37, a strip-shaped shell, 371, a sliding chute, 372, a sliding block, 38, a first strip-shaped hole, 39, a strip-shaped column, 310, a second strip-shaped hole, 311, a pushing plate, 312, a hydraulic cylinder, 4, a water mist spraying mechanism, 41, a water tank, 42, a mounting plate, 43, a strip-shaped frame, 44, a first spraying pipe, 45, a first nozzle, 46, an electromagnetic valve, 47, a first water outlet pipe, 48, a water pump, 49, a water inlet pipe, 410, a second spraying pipe, 411, a second nozzle, 412, a second water outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a road cleaning device for road environmental protection, comprising: automobile body 1, box 2, deashing mechanism 3 and water smoke spraying mechanism 4, box 2 are fixed to be set up on the top of automobile body 1, and box 2 is provided with the chamber door in order can entering into box 2, and deashing mechanism 3 sets up in the bottom of automobile body 1, and water smoke spraying mechanism 4 sets up the rear side at box 2.
Preferably, the ash removal mechanism 3 further includes: an exhaust fan 31, a dust collection box 32, a filter screen 33, a first dust suction pipe 34, a dust suction hose 35 and a second dust suction pipe 36, wherein the exhaust fan 31 is fixedly arranged at the front side of the bottom end of the inner cavity of the box body 2, the exhaust fan 31 is the prior art, the dust collection box 32 can generate suction force to the first dust suction pipe 34 and the dust suction hose 35, the dust collection box can be used according with the model of the exhaust fan in the scheme, the dust collection box 32 is fixedly arranged at the bottom end of the inner cavity of the box body 2, an air outlet of the exhaust fan 31 is screwed with one side of the dust collection box 32, the filter screen 33 is detachably arranged in an inner cavity of the dust collection box 32, the filter screen 33 can collect dust or sundries in the dust collection box 32, the first dust collection pipe 34 is screwed with one side of the dust collection box 32, the front side and the rear side of the dust collection box 32 are both screwed with dust collection hoses 35, the second dust collection pipe 36 is in interference fit with one end of the dust collection hoses 35, by providing the suction hose 35 to facilitate the second suction pipe 36 to follow the bar post 39.
Preferably, the ash removing mechanism 3 further comprises: a bar-shaped shell 37, a first bar-shaped hole 38, a bar-shaped column 39, a second bar-shaped hole 310, a push plate 311 and a hydraulic cylinder 312, wherein the bar-shaped shell 37 is fixedly arranged at the bottom end of the vehicle body 1 along the left-right direction, one end of a first dust suction pipe 34 extends out of the bottom end of the vehicle body 1 and is in bolt connection with the top end of the bar-shaped shell 37, the bottom end of the bar-shaped shell 37 is provided with the first bar-shaped hole 38, the left side and the right side of the bar-shaped shell 37 are both inserted with the bar-shaped column 39, the inner side of the bar-shaped column 39 is communicated with the inner cavity of the bar-shaped shell 37, one end of a second dust suction pipe 36 extends out of the side wall of the box body 2 and is in bolt connection with the top end of the bar-shaped column 39, the bottom end of the bar-shaped column 39 is provided with the second bar-shaped hole 310, road dust and sundries passing through the vehicle body 1 can be respectively sucked into the inner cavities, one end of the hydraulic cylinder 312 is fixedly connected with the inner side of the push plate 311, and the hydraulic cylinder 312 is in the prior art, can push the push plate 311 to move, and can be used according to the type of the hydraulic cylinder in the scheme.
As preferred scheme, still further, the spout 371 has all been seted up along left and right direction to the inner chamber top left and right sides of bar shell 37, and the inner chamber of spout 371 is pegged graft and is had a part of slider 372, and the fixed top that sets up at bar post 39 in another part of slider 372 can make bar post 39 stably move through being provided with spout 471 and slider 372.
As a preferable aspect, further, the water mist spraying mechanism 4 includes: the water tank 41 is fixedly arranged at the rear side of the bottom end of the inner cavity of the box body 2, the mounting plate 42 is fixedly arranged at the rear side of the bottom end of the vehicle body 1 along the left-right direction, the bar-shaped frame 43 is fixedly arranged at the rear side of the mounting plate 42, the rear side of the bar-shaped frame 43 is in a through shape, the first spraying pipe 44 is fixedly arranged in the middle of the inner cavity of the bar-shaped frame 43, the rear side of the first spraying pipe 44 is sequentially screwed with a plurality of first spraying heads 45 from left to right, the first spraying heads 45 and the second spraying heads 411 are both in the prior art, water can be sprayed in a water mist mode and can be used according with the type of the spraying heads, the electromagnetic valve 46 is screwed with the bottom end of the rear side of the water tank 41, one end of the first water outlet pipe 47 is screwed with the electromagnetic valve 46, and the other end of the first water outlet pipe 47 extends into the inner cavity of the bar-shaped frame 43 and is screwed with the outer wall of the first spraying pipe 44, the electromagnetic valve 46 is a conventional one, and the electromagnetic valve 46 can control the outflow of water in the water tank 41, and can be used according to the type of the electromagnetic valve.
Preferably, the water mist spraying mechanism 4 further includes: the water pump 48, the water inlet pipe 49, the second spray pipe 410, the second spray nozzle 411, the second water outlet pipe 412 and the water diversion pipe 413, the water pump 48 is fixedly arranged at the bottom end of the inner cavity of the box body 2, the water pump 48 is in the prior art, water in the water tank 41 can be sucked into the water inlet pump 48 through the water inlet pipe 49 under the suction action of the water pump 48, the water pump can be used according with the model of the water pump in the scheme, the water inlet of the water pump 48 is in threaded connection with one end of the water inlet pipe 49, the other end of the water inlet pipe 49 extends into the inner cavity of the water tank 41, the second spray pipes 410 are fixedly arranged on the left side and the right side of the inner cavity of the bar-shaped frame 43, the second spray nozzles 411 are in threaded connection with the left end and the right end of the rear side of the second spray pipes 410, the second water outlet pipe 412 is in threaded connection with the water outlet of the water pump 48, the water diversion, the branched pipe 413 may sequentially flow water into the second spray pipes 410 located at the left and right sides.
Preferably, the second spraying pipe 410 is inclined from the front to the rear to the outside so as to widen the range of the mist sprayed out through the second spraying head 411, and the spraying distance of the second spraying head 411 can be increased by providing the water pump 48, thereby further enlarging the spraying range.
All the electrical components in the present application are connected with the power supply adapted to the electrical components through the wires, and an appropriate controller should be selected according to actual conditions to meet the control requirements, specific connection and control sequence.
When the cleaning device is used, an external power supply of the exhaust fan 31 and an external hydraulic pump power supply of the hydraulic cylinder 312 are connected, the exhaust fan 31 can enable the strip-shaped shell 37 and the strip-shaped column 39 to generate suction force after being started, so that road surface dust and sundries passing through the vehicle body 1 are respectively sucked into the inner cavities of the strip-shaped shell 37 and the strip-shaped column 39 through the first strip-shaped hole 38 and the second strip-shaped hole 310, and are sucked into the dust collection box 32 through the first dust collection pipe 34 and the second dust collection pipe 36, and are collected in the dust collection box 32 under the isolation of the filter screen 33, when a wider road surface needs to be cleaned, the hydraulic cylinder 312 is controlled to be started, the hydraulic cylinder 312 can enable the strip-shaped column 39 to be stably moved out of the strip-shaped shell 37 under the limiting action of the sliding groove 371 and the sliding block 372 by pushing the push of the push plate 311, so that the cleaning range of the road surface dust, after the battery valve 46 starts, can make water flow into first spray pipe 44 through first outlet pipe 47 under the action of gravity of water in water tank 41, and can outwards spout in order to carry out the dust fall to the road surface through first shower nozzle 45, control water pump 48 starts the back, can make water in the water tank 41 pass through inlet tube 49 and inhale in intake pump 48 under water pump 48's suction, and in second spray pipe 410 is advanced to the flow direction through second outlet pipe 412 and distributive pipe 413, outwards spout by second shower nozzle 411 again, thereby can improve the device to the spray range of water smoke, and then be convenient for can clean the road surface of broad, the practicality of the device has been improved greatly, be favorable to extensively promoting.
In the description of the present invention, it is to be understood that the terms "top end", "bottom end", "front side", "rear side", "outer wall", "inner cavity", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation; also, unless expressly stated or limited otherwise, the terms "insert," "threaded," "secured," "interference fit," "disposed," and the like are to be construed broadly and may include, for example, a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A road cleaning device for road environmental protection, comprising:
a vehicle body (1);
the box body (2) is fixedly arranged at the top end of the vehicle body (1);
the ash removal mechanism (3) is arranged at the bottom end of the vehicle body (1);
water smoke spraying mechanism (4), the setting is in the rear side of box (2), water smoke spraying mechanism (4) include:
the water tank (41) is fixedly arranged on the rear side of the bottom end of the inner cavity of the box body (2);
the mounting plate (42) is fixedly arranged on the rear side of the bottom end of the vehicle body (1) along the left-right direction;
the strip-shaped frame (43) is fixedly arranged on the rear side of the mounting plate (42), and the rear side of the strip-shaped frame (43) is in a through shape;
the first spraying pipe (44) is fixedly arranged in the middle of the inner cavity of the strip-shaped frame (43);
the rear side of the first spraying pipe (44) is sequentially screwed with a plurality of first spraying heads (45) from left to right;
the electromagnetic valve (46) is in threaded connection with the bottom end of the rear side of the water tank (41);
one end of the first water outlet pipe (47) is in threaded connection with the electromagnetic valve (46), and the other end of the first water outlet pipe (47) extends into the inner cavity of the strip-shaped frame (43) and is in threaded connection with the outer wall of the first spraying pipe (44);
the water pump (48) is fixedly arranged at the bottom end of the inner cavity of the box body (2);
the water inlet of the water pump (48) is connected with one end of the water inlet pipe (49) in a threaded manner, and the other end of the water inlet pipe (49) extends into the inner cavity of the water tank (41);
the left side and the right side of the inner cavity of the strip-shaped frame (43) are both fixedly provided with the second spraying pipes (410);
the left end and the right end of the rear side of the second spraying pipe (410) are respectively screwed with the second spraying head (411);
the second water outlet pipe (412) is in threaded connection with a water outlet of the water pump (48);
and the water diversion pipe (413) is in interference fit with the outer wall of the second water outlet pipe (412), and the two ends of the water diversion pipe (413) extend into the inner cavity of the bar-shaped frame (43) and are in threaded connection with the top end of the outer wall of the second spraying pipe (410).
2. The cleaning device for a road use in an environment protecting a road according to claim 1, wherein: the ash removal mechanism (3) comprises:
the exhaust fan (31) is fixedly arranged on the front side of the bottom end of the inner cavity of the box body (2);
the dust collection box (32) is fixedly arranged at the bottom end of the inner cavity of the box body (2), and an air outlet of the exhaust fan (31) is in threaded connection with one side of the dust collection box (32);
a filter screen (33) detachably provided in an inner cavity of the dust box (32);
a first dust suction pipe (34) screwed with one side of the dust box (32);
the dust collection box comprises a dust collection hose (35), wherein the front side and the rear side of the dust collection box (32) are respectively screwed with the dust collection hose (35);
and the second dust suction pipe (36) is in interference fit with one end of the dust suction hose (35).
3. The cleaning device for road used for road environmental protection according to claim 2, wherein: the ash cleaning mechanism (3) further comprises:
the dust collection device comprises a strip-shaped shell (37), wherein the strip-shaped shell (37) is fixedly arranged at the bottom end of the vehicle body (1) along the left-right direction, one end of a first dust collection pipe (34) extends out of the bottom end of the vehicle body (1) and is in threaded connection with the top end of the strip-shaped shell (37), and a first strip-shaped hole (38) is formed in the bottom end of the strip-shaped shell (37);
the left side and the right side of the strip-shaped shell (37) are respectively provided with a strip-shaped column (39) in an inserted mode, the inner side of each strip-shaped column (39) is communicated with the inner cavity of the strip-shaped shell (37), one end of the second dust suction pipe (36) extends out of the side wall of the box body (2) and is in threaded connection with the top end of each strip-shaped column (39), and the bottom end of each strip-shaped column (39) is provided with a second strip-shaped hole (310);
the push plate (311) is fixedly arranged on the rear side of the rolled strip-shaped column (39);
the hydraulic cylinder (312) is fixedly arranged at the left end and the right end of the rear side of the strip-shaped shell (37), and one end of the hydraulic cylinder (312) is fixedly connected with the inner side of the push plate (311).
4. A cleaning device for a road use in an environment protecting a road according to claim 3, wherein: the left side and the right side of the top end of the inner cavity of the strip-shaped shell (37) are provided with sliding grooves (371) along the left-right direction, the inner cavity of each sliding groove (371) is spliced with one part of a sliding block (372), and the other part of each sliding block (372) is fixedly arranged at the top end of the strip-shaped column (39).
5. The cleaning device for a road use in an environment protecting a road according to claim 1, wherein: the second spray pipe (410) is obliquely arranged from front to back to the outside.
CN202020523907.7U 2020-04-11 2020-04-11 Road cleaning device for highway environmental protection Expired - Fee Related CN213596899U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020523907.7U CN213596899U (en) 2020-04-11 2020-04-11 Road cleaning device for highway environmental protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020523907.7U CN213596899U (en) 2020-04-11 2020-04-11 Road cleaning device for highway environmental protection

Publications (1)

Publication Number Publication Date
CN213596899U true CN213596899U (en) 2021-07-02

Family

ID=76582403

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020523907.7U Expired - Fee Related CN213596899U (en) 2020-04-11 2020-04-11 Road cleaning device for highway environmental protection

Country Status (1)

Country Link
CN (1) CN213596899U (en)

Similar Documents

Publication Publication Date Title
CN213596899U (en) Road cleaning device for highway environmental protection
CN208219519U (en) A kind of expressway barrier curing means
CN208275613U (en) A kind of anti-blocking bushing type single-power back flush type nozzle for atomizing water with air
CN213203935U (en) Environmental protection highway dust removal machinery
CN111167252B (en) Intelligent dust removal device for production workshop
CN204432625U (en) Movable water-saving automobile cleaner
CN213926022U (en) High-efficient dust extraction of intelligence urban road cleaning vehicle
CN213221482U (en) Energy-concerving and environment-protective dust collector
CN2560300Y (en) Floor cleaning machine
CN212818930U (en) A dust collector for machining
CN209989747U (en) Energy-saving dust-control sweeper
CN211665658U (en) Intelligent automobile chassis cleaning device
CN211358210U (en) Wisdom is dust device for building site
CN211171771U (en) Dry and wet dual-purpose electric locomotive
CN210049170U (en) Road sweeper with dust absorption function
CN216223519U (en) High-efficient energy-conserving dust device for civil engineering construction
CN214638976U (en) High-efficient dust collector is used in clean factory building construction of semiconductor
CN216149356U (en) Dust collector for green building construction that filter effect is good
CN219399520U (en) Three-stage filtration powder dust removal box
CN214972798U (en) Energy-saving environment-friendly water curtain type dust remover
CN213498561U (en) Rounding device for aluminum veneer production
CN208328805U (en) A kind of pavement sweeping machine
CN215165101U (en) Road surface cleaning device for environmental protection
CN212188486U (en) Acid mist spray tower
CN214552234U (en) Dust fall instrument is used in highway construction

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210702