CN209323452U - Urban road dust-filtering cleaning device - Google Patents

Urban road dust-filtering cleaning device Download PDF

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Publication number
CN209323452U
CN209323452U CN201920044356.3U CN201920044356U CN209323452U CN 209323452 U CN209323452 U CN 209323452U CN 201920044356 U CN201920044356 U CN 201920044356U CN 209323452 U CN209323452 U CN 209323452U
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CN
China
Prior art keywords
water
chamber
urban road
cleaning device
road dust
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
CN201920044356.3U
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Chinese (zh)
Inventor
孙兴伟
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.)
Linyi Jingfa Road And Bridge Engineering Co Ltd
Original Assignee
Linyi Jingfa Road And Bridge Engineering 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
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Application filed by Linyi Jingfa Road And Bridge Engineering Co Ltd filed Critical Linyi Jingfa Road And Bridge Engineering Co Ltd
Priority to CN201920044356.3U priority Critical patent/CN209323452U/en
Application granted granted Critical
Publication of CN209323452U publication Critical patent/CN209323452U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of urban road dust-filtering cleaning devices, it is related to road cleaning technical field, including cleaning vehicle, the side wall of the cleaning vehicle is equipped with multiple walking legs, walking leg passes through the second screw and is connected with cleaning vehicle, traveling wheel is equipped on walking leg, it cleans vehicle and is equipped with device slot, partition is fixedly connected on the inner wall of device slot, device slot is divided into first chamber and second chamber by partition, water scooping machine is equipped in first chamber, water tank is equipped in second chamber, buffer gear there are two being all provided on the side wall of water tank and water scooping machine, the upper end of first chamber and second chamber, which is equipped with, is tamping device, the lower end of water scooping machine is equipped with water absorber, water tank is equipped with spray equipment, the side wall for cleaning vehicle is equipped with pushing meanss.The structure design of the utility model is reasonable, has easy to operate, benefit that can be stable with mass production and equipment.

Description

Urban road dust-filtering cleaning device
Technical field
The utility model relates to road cleaning technical fields, specifically, being related to a kind of urban road dust-filtering cleaning Device.
Background technique
Occurs the exploitation for the formula of draiing the pond to get all the fish in the fast development process of China's economy, expanding economy occurs with sacrificial The phenomenon that domestic animal environment is cost.And Linyi City locating for applicant, main leader is also because the problem of haze, is repeatedly environmentally friendly Department is about talked, and other than the exhaust emission of heavy industrial works, most important source is urban road vehicle in the haze source of Linyi City Increase and waste emission, and Linyi City is a development more slow three line city, and citizens' activities often rely on private Family's vehicle and electric bicycle, for electric vehicle and pedestrian, the fugitive dust and vehicle exhaust on ground are a big health threats.
For the fugitive dust on ground, it is unpractical for directly cleaning, and can cause secondary injury to cleaning personnel, Urban road is safeguarded using sprinkling truck, can be cleaned to road, can be also dissolved in water fugitive dust, undissolved fugitive dust It is also attached on ground after absorbing water.But existing sprinkling truck often only has sprinkle water function, after water is dry, raising on ground Dirt and haze can still be flown upward, the effect on sprinkling truck be only limitted to it is temporary solve the problems, such as, can not tackle the problem at its root, and Sprinkling truck is all huger, is often also required to transfer order using sprinkling truck, using nor what everybody can complete.
Utility model content
To solve the above problems, the utility model provide a kind of compact structure, it is easy to use and can be relatively complete solution The certainly urban road dust-filtering cleaning device of dust from land surface and haze.
The utility model includes the cleaning vehicle equipped with walking leg, and cleaning is interior to be equipped with device slot, and being equipped in device slot will fill The partition that slot is divided into first chamber and second chamber is set, water scooping machine is equipped in first chamber, water scooping machine lower end, which is equipped with, stretches out dress The water absorber outside slot is set, water tank is equipped in second chamber, water tank lower end is equipped with the spray equipment outside extending apparatus slot.It is preferred that , to realize recycling for the water drawn of water scooping machine, reverse osmosis module is equipped between water scooping machine and water tank.
When the utility model is used, being sprayed water to the ground by spray equipment, the dust in ground and air is moistened, is made The dust that must can be dissolved in water is dissolved in water, and dust not soluble in water drops on ground after being spontaneously wet out by water, and it is empty to play purification The effect of gas;Water absorber after spray equipment is arranged in is dissolved in water by water scooping machine and undissolved particle is inhaled together Enter to water scooping machine;It enters the water in water scooping machine containing dust to be purified through reverse osmosis module, be entered by purified water In water tank, recycling for water is realized, certainly in operation process, water can be lost, and be needed in operation process according to Water in Water Tanks Number added.The utility model structure is relatively simple, and use is very convenient, and operating personnel's hand push can be used to dedusting work Industry.
Further, the water absorber includes that the second Telescopic flexible pipe of water scooping machine lower end is arranged in and is arranged second The suction hose of Telescopic flexible pipe lower end, suction hose lower end are equipped with suction nozzle.First chamber bottom is equipped with first be pierced by for suction hose Through-hole, the interior balancing pole for being equipped with multiple horizontal directions of first through hole, water suction pipe outer wall are equipped with multiple edges for balancing pole movement The compensating groove of suction hose length direction, balancing pole, which is equipped with, to be used for the anchor ear that suction hose is fixed along balancing pole sliding, It is connected between anchor ear and first through hole inner wall by spring, the spring is preferably pressure spring.Telescopic flexible pipe can be realized extension With it is flexible, and then position of the suction nozzle apart from ground can be adjusted, and balancing pole and being provided in for anchor ear adjust suction nozzle distance The height of suction nozzle is fixed behind the position on ground, realizes that fixed process is: adjusting suction by adjusting Telescopic flexible pipe Height of the mouth apart from ground, balancing pole is slided along compensating groove during adjustment, then along balancing pole to suction hose position The mobile anchor ear in place is set, finally anchor ear is directly anchored on suction hose, since anchor ear is slidably connected on balancing pole, anchor ear will be inhaled When water pipe is embraced, suction hose realized relative to first through hole it is relatively fixed, can to anchor ear and by the effect of spring Play certain buffering and fixed function.
Further, the spray equipment includes the water pump being arranged in water tank, and it is scalable that water pump output end is equipped with first Hose, the first Telescopic flexible pipe lower end are equipped with sparge pipe, and sparge pipe lower end is communicated with isocon, shunt pipe end and are equipped with multiple sprays Mouth.Second chamber bottom is equipped with the second through-hole passed through for sparge pipe, and the balancing pole of multiple horizontal directions is equipped in the second through-hole, Pipe outer wall of spraying water is equipped with multiple compensating grooves along sparge pipe length direction for balancing pole movement, and balancing pole is equipped with being capable of edge The anchor ear for fixing sparge pipe of balancing pole sliding, is equipped with spring between anchor ear and the second through-hole wall.The structure is set It sets identical with the structure function being arranged in first chamber, is to be conveniently adjusted the height with fixed nozzle apart from ground.
Preferably, it being equipped with buffer bar in first chamber and second chamber, water scooping machine and water tank are each attached on buffer bar, The side wall of device slot and the side wall of partition are equipped with sliding slot, slide bar are equipped with vertically in sliding slot, between the both ends and slide bar of buffer bar It is slidably connected, the two sides up and down of slide bar are equipped with buffer spring, are all provided with promising buffer bar on device slot inner wall and partition inner wall and mention For the buffer stopper of buffering.The effect that the structure is arranged is to give water scooping machine, water tank and buffer bar to buffer, for reducing to setting Standby damage.
Further, the upper end of first chamber and second chamber, which is equipped with, is tamping device, and the device that is tamping includes being located at The cover board of first chamber and second chamber opening is set on cover board there are two circular hole, and slide bar extends through the circular hole of corresponding position, The threaded one end that slide bar is located in circular hole is connected with the first screw.
Further, water scooping machine is damaged to prevent the large particulate solid matters such as stone to be inhaled into water scooping machine, it is close Baffle is equipped between the walking leg of nozzle side, suction nozzle is equipped with filter screen.
Further, for convenience of movement, cleaning vehicle side wall is equipped with pushing meanss, and pushing meanss are clear including being fixedly connected on Damping rotation shaft on clean vehicle side wall, rotation connection is there are two connecting rod on the Damping rotation shaft, between two connecting rods altogether With holding rod is equipped with, universal wheel also is provided on traveling wheel.
Compared with prior art, the utility model has the following beneficial effects: (1) passes through setting cleaning vehicle, water scooping machine, water Case, water absorber, spray equipment and pushing meanss cooperate, and large-scale cleaning vehicle is simplified to the small-sized cleaning pushed Cart first passes through water tank and is soaked with spray equipment road pavement, by dust wetting in water, then passes through water scooping machine for ground On the water that spreads drink up, it is simple and convenient to siphon away a large amount of dust on ground, each cleanup crew, nothing can be installed to The whole of Large Clean vehicle need to be waited to clean again;(2) it is cooperated by setting buffer gear with device is tamping, each buffer Structure can greatly slow down the vibration that water scooping machine and water pump generate at work, increase the stability of cleaning vehicle, convenient Cleanup crew's operation;(3) position on suction nozzle and nozzle distance ground can according to need and be adjusted in the utility model, fit With in extensive range, and adjustment structure low cost, save cost.
Detailed description of the invention
Fig. 1 is 1 structural schematic diagram of embodiment;
Fig. 2 is Fig. 1 front schematic view;
Fig. 3 is spray equipment schematic diagram in Fig. 1;
Fig. 4 is 2 structural schematic diagram of embodiment;
Fig. 5 is schematic enlarged-scale view at A in Fig. 4;
Fig. 6 is that B-B direction attempts in Fig. 5;
In figure: 1- holding rod;2- connecting rod;3- water scooping machine;4- partition;5- water tank;6- cover board;The first screw of 7-;8- slide bar; 9- buffer bar;10- sliding block;11- spring;12- cleans vehicle;13- baffle;The first Telescopic flexible pipe of 14-;15- sparge pipe;16- points Flow tube;17- nozzle;18- suction nozzle;19- suction hose;The second Telescopic flexible pipe of 20-;21- walking leg;22- traveling wheel;23- second Screw;24- reverse osmosis module;25- first through hole;The second through-hole of 26-;27- balancing pole;28- compensating groove;29- anchor ear;30- is slow Rush block.
Specific embodiment
The utility model is further explained with reference to the accompanying drawings and examples.It needs in the description of the present invention, It is to be understood that the orientation of the instructions such as term " on ", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outside" Or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification is retouched It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Therefore it should not be understood as limiting the present invention.
Embodiment 1
A kind of urban road dust-filtering cleaning device, as shown in Figure 1, including cleaning vehicle 12, on the side wall for cleaning vehicle 12 Equipped with multiple walking legs 21, multiple walking legs 21 are connected by the second screw 23 with cleaning vehicle 12, on multiple walking legs 21 It is equipped with traveling wheel 22, the traveling wheel 22 is universal wheel, and device slot, the company of fixation on the inner wall of device slot are equipped in cleaning vehicle 12 It is connected to partition 4, device slot is divided into first chamber and second chamber, is equipped with water scooping machine 3, the second chamber in first chamber by partition 4 Interior is equipped with water tank 5, is all provided on the side wall of water tank 5 and water scooping machine 3 there are two buffer gear, first chamber and second chamber it is upper End, which is equipped with, is tamping device, and the lower end of water scooping machine 3 is equipped with water absorber, and 5 lower end of water tank is equipped with spray equipment, cleans the side of vehicle 12 Wall is equipped with pushing meanss, and pushing meanss include the Damping rotation shaft being fixedly connected on cleaning 12 side wall of vehicle, turns on Damping rotation shaft Connecting rod 2 there are two connecting is moved, is equipped with holding rod 1 jointly between two connecting rods 2, operator can hold holding rod 1 and grasp Make.Baffle 13 is fixedly connected between two walking legs 21 far from holding rod 1 jointly, baffle 13 can separate the miscellaneous of some large sizes Object, such as stone etc. prevent the progress for influencing cleaning dust.
The buffer gear, including buffer bar 9, water scooping machine 3 and water tank 5 are fixed on buffer bar 9, device slot inner wall and every 4 inner wall of plate is equipped with sliding slot, and the interior bottom of sliding slot is fixedly connected with slide bar 8, and buffer bar 9 slides on slide bar 8, sliding on slide bar 8 Dynamic to be arranged with spring 11, the spring 11 on slide bar 8 is located at the two sides up and down of buffer bar 9, meanwhile, for the left and right two to buffer bar 9 Side is buffered, and buffer stopper 30 is equipped on 4 inner wall of device slot inner wall and partition, and the buffer stopper 30 can be for certain When the substances such as the rubber block of elasticity or sponge, water scooping machine 3 and water tank 5 work, shake can be generated, with corresponding two A buffer bar 9 slides on corresponding slide bar 8, to squeeze two springs 11 up and down, the elastic force effect of each spring 11 is played The effect of buffering.
The spray equipment can more fully draw the water on ground dissolved with dust particles and undissolved Grain, spray equipment includes the water pump being located in water tank 5, and the output end of water pump is communicated with the first Telescopic flexible pipe 14, and first can stretch The lower end of contracting hose 14 is equipped with sparge pipe 15, and the lower end of sparge pipe 15 is communicated with isocon 16, and the lower end of isocon 16 is communicated with Multiple nozzles 17, multiple nozzles 17 spray the water in water tank 5, and the dust in road pavement is soaked.Second chamber bottom is equipped with For the second through-hole 26 that sparge pipe 15 passes through, it is equipped with the balancing pole 27 of multiple horizontal directions in the second through-hole 26, outside sparge pipe 15 Wall is equipped with multiple compensating grooves 28 along sparge pipe length direction moved for balancing pole 27, and balancing pole 27 is equipped with can be along flat What the bar 27 that weighs slided is used for the anchor ear 29 that sparge pipe 15 is fixed, is equipped with spring 11 between 26 inner wall of anchor ear 29 and the second through-hole, The spring 11 is preferably pressure spring.The setting of the structure is conveniently adjusted the height with fixed nozzle 17 apart from ground.
The water absorber can be stretched including the second Telescopic flexible pipe 20 of 3 lower end of water scooping machine is arranged in and is arranged second The suction hose 19 of 20 lower end of contracting hose, 19 lower end of suction hose are equipped with suction nozzle 18.First chamber bottom is equipped with and is pierced by for suction hose 19 First through hole 25, the balancing pole 27 of multiple horizontal directions is equipped in first through hole 25,19 outer wall of suction hose is equipped with multiple confessions The compensating groove 28 along 19 length direction of suction hose that balancing pole 27 moves, balancing pole 27 is equipped with can be along the sliding of balancing pole 27 For the anchor ear 29 that suction hose 19 is fixed, connected between 25 inner wall of anchor ear 29 and first through hole by spring 11, spring 11 is excellent It is selected as pressure spring.Second Telescopic flexible pipe 20 can be realized extension and stretch, and then can adjust position of the suction nozzle 18 apart from ground (lower end of suction nozzle 18 differs 1cm to 3cm with ground), and balancing pole 27 and being provided in for anchor ear 29 adjust 18 distance of suction nozzle The height of suction nozzle 18 is fixed behind the position on ground, realizes that fixed process is: by adjusting the second Telescopic flexible pipe 20 Height of the suction nozzle 18 apart from ground is adjusted, balancing pole 27 is slided along compensating groove 28 during adjustment, then along flat Bar 27 weigh to mobile anchor ear 29 at 19 position of suction hose, finally anchor ear 29 is directly anchored on suction hose 19, due to anchor ear 29 It is slidably connected on balancing pole 27, when anchor ear 29 embraces suction hose 19, suction hose 19 is realized relatively relative to first through hole 25 It is fixed, and pass through the effect of spring 11, certain buffering and fixed function can be played to anchor ear 29.First is scalable Used in hose 14 and the second Telescopic flexible pipe 20 can be used and can be realized under flexible bellows, such as family's hand basin Sewer hose when applying in the utility model, needs to guarantee itself and suction hose 19, sparge pipe 15, water tank 5, water scooping machine 3 Between secured connection, can be connected using mode commonly used in the prior art, can also be using described in the utility model Anchor ear is fixed.
It is described to be tamping device, including the cover board 6 being located at first chamber and second chamber accent, set on cover board 6 there are two Circular hole, two slide bars 8 extend through the circular hole of corresponding position, and two slide bars 8 are located at one end in circular hole and are threaded with One screw 7, two cover boards 6 are sealed first chamber and second chamber, water scooping machine 3 and water tank 5 can be limited first In chamber and second chamber, prevent from shifting.
In use, guaranteeing to be full of water in water tank 5 first, cover board 6 is covered, then screw on two the first screws, 7 to two slide bars 8 Upper end, cover board 6 is limited, then cleanup crew can grasp holding rod 1, push cleaning vehicle 12 to be moved, this When water pump and water scooping machine 3 in water tank 5 opened by controller in the prior art, water pump by the first Telescopic flexible pipe 14 with Water in water tank 5 is transported in isocon 16 by water pipe 15, then is sprayed on ground by each nozzle 17, to the dust on ground It is soaked, then proceedes to push cleaning vehicle 12 forward, allow suction nozzle 18 to come wetted region, be dissolved in the ground in water The wetted dust not being dissolved in water siphons away on dust and ground.
Embodiment 2
The present embodiment is identical as 1 structure of embodiment in addition to following characteristics:
Reverse osmosis module 24 is additionally provided between water scooping machine 3 and water tank 5, the water that water scooping machine 3 is drawn passes through reverse osmosis group Clear water enters in water tank 5 after part 24 filters, and realization recycles.
In the present embodiment, slide bar 8 is equipped with sliding block 10, and sliding block 10 is located at the two sides of buffer bar 9, and contact surface is equipped with rubber The upper end of blob of viscose, bottom spring 11 is connect with the sidewall elastomer of sliding block 10, and the lower end of spring 11 and the interior bottom resilient of sliding slot connect It connects;The bottom of top spring 11 is connect with the sidewall elastomer of sliding block 10, the top of spring 11 and 6 inner wall elastic connection of cover board.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (10)

1. a kind of urban road dust-filtering cleaning device, the cleaning vehicle (12) including being equipped with walking leg (21), which is characterized in that It cleans and is equipped with device slot in vehicle (12), be equipped with the partition (4) that device slot is divided into first chamber and second chamber in device slot, Water scooping machine (3) are equipped in first chamber, water scooping machine (3) lower end is equipped with the water absorber outside extending apparatus slot, sets in second chamber Have water tank (5), water tank (5) lower end is equipped with the spray equipment outside extending apparatus slot.
2. urban road dust-filtering cleaning device according to claim 1, which is characterized in that water scooping machine (3) and water tank (5) reverse osmosis module (24) are equipped between.
3. urban road dust-filtering cleaning device according to claim 1 or 2, which is characterized in that the water absorber In second Telescopic flexible pipe (20) of water scooping machine (3) lower end and the suction in the second Telescopic flexible pipe (20) lower end is set including setting Water pipe (19), suction hose (19) lower end are equipped with suction nozzle (18).
4. urban road dust-filtering cleaning device according to claim 3, which is characterized in that first chamber bottom is equipped with For the first through hole (25) that suction hose (19) is pierced by, it is equipped with the balancing pole (27) of multiple horizontal directions in first through hole (25), inhales Water pipe (19) outer wall is equipped with multiple compensating grooves (28) along suction hose (19) length direction for balancing pole (27) movement, balance Bar (27) be equipped with can be slided along balancing pole (27) for the anchor ear (29) that suction hose (19) are fixed, anchor ear (29) and the It is connected between one through-hole (25) inner wall by spring (11).
5. urban road dust-filtering cleaning device according to claim 4, which is characterized in that the spray equipment includes Water pump in water tank (5) is set, and water pump output end is equipped with the first Telescopic flexible pipe (14), the first Telescopic flexible pipe (14) lower end Equipped with sparge pipe (15), sparge pipe (15) lower end is communicated with isocon (16), and isocon (16) end is equipped with multiple nozzles (17).
6. urban road dust-filtering cleaning device according to claim 5, which is characterized in that second chamber bottom is equipped with For the second through-hole (26) that sparge pipe (15) passes through, the balancing pole (27) of multiple horizontal directions, spray are equipped in the second through-hole (26) Water pipe (15) outer wall is equipped with multiple compensating grooves (28) along sparge pipe (15) length direction for balancing pole (27) movement, balance Bar (27) be equipped with can be slided along balancing pole (27) for the anchor ear (29) that sparge pipe (15) are fixed, anchor ear (29) and the It is connected between two through-holes (26) inner wall by spring (11).
7. urban road dust-filtering cleaning device according to claim 6, which is characterized in that first chamber and the second chamber Interior is equipped with buffer bar (9), and water scooping machine (3) and water tank (5) are each attached on buffer bar (9), the side wall and partition of device slot (4) side wall is equipped with sliding slot, is equipped with slide bar (8) vertically in sliding slot, the company of sliding between the both ends and slide bar (8) of buffer bar (9) It connects, the two sides up and down of slide bar (8) are equipped with buffer spring (11).
8. urban road dust-filtering cleaning device according to claim 7, which is characterized in that device slot inner wall and partition (4) it is all provided with promising buffer bar (9) on inner wall, the buffer stopper (30) of buffering is provided.
9. urban road dust-filtering cleaning device according to claim 7, which is characterized in that first chamber and the second chamber The upper end of room, which is equipped with, is tamping device, and the device that is tamping includes the cover board (6) for being located at first chamber and second chamber opening, It is set on cover board (6) there are two circular hole, slide bar (8) extends through the circular hole of corresponding position, and slide bar (8) is located at one end in circular hole It is threaded with the first screw (7).
10. urban road dust-filtering cleaning device according to claim 9, which is characterized in that suction nozzle (18) is equipped with Filter screen is equipped with baffle (13) between the walking leg (21) of nozzle (17) side;It cleans vehicle (12) side wall and is equipped with promotion Device, pushing meanss include the Damping rotation shaft being fixedly connected on cleaning vehicle (12) side wall, are rotatablely connected on the Damping rotation shaft There are two connecting rod (2), holding rod (1) is equipped with jointly between two connecting rods (2).
CN201920044356.3U 2019-01-10 2019-01-10 Urban road dust-filtering cleaning device Expired - Fee Related CN209323452U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920044356.3U CN209323452U (en) 2019-01-10 2019-01-10 Urban road dust-filtering cleaning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920044356.3U CN209323452U (en) 2019-01-10 2019-01-10 Urban road dust-filtering cleaning device

Publications (1)

Publication Number Publication Date
CN209323452U true CN209323452U (en) 2019-08-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920044356.3U Expired - Fee Related CN209323452U (en) 2019-01-10 2019-01-10 Urban road dust-filtering cleaning device

Country Status (1)

Country Link
CN (1) CN209323452U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111485523A (en) * 2020-01-21 2020-08-04 菏泽宏伟专用汽车有限公司 Novel sanitation car vehicle-mounted cleaning frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111485523A (en) * 2020-01-21 2020-08-04 菏泽宏伟专用汽车有限公司 Novel sanitation car vehicle-mounted cleaning frame

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

Granted publication date: 20190830

Termination date: 20210110

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