CN104594256A - Linkage lifting mechanism for tray brushes and rolling brush of sweeper - Google Patents

Linkage lifting mechanism for tray brushes and rolling brush of sweeper Download PDF

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Publication number
CN104594256A
CN104594256A CN201510012750.5A CN201510012750A CN104594256A CN 104594256 A CN104594256 A CN 104594256A CN 201510012750 A CN201510012750 A CN 201510012750A CN 104594256 A CN104594256 A CN 104594256A
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CN
China
Prior art keywords
link gear
round brush
sweeper
quadrangle
quadrangle link
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Granted
Application number
CN201510012750.5A
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Chinese (zh)
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CN104594256B (en
Inventor
陈南
弥甜
陈晨
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Southeast University
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Southeast University
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Priority to CN201510012750.5A priority Critical patent/CN104594256B/en
Publication of CN104594256A publication Critical patent/CN104594256A/en
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Publication of CN104594256B publication Critical patent/CN104594256B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/02—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt
    • E01H1/05—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

The invention discloses a linkage lifting mechanism for tray brushes and a rolling brush of a sweeper. The lifting mechanism comprises a first quadrangular linkage mechanism, a second quadrangular linkage mechanism, a fixed support, an electric drive pusher (8), wherein the second quadrangular linkage mechanism is opposite to the first quadrangular linkage mechanism, and the fixed support is connected with the first quadrangular linkage mechanism and the second quadrangular linkage mechanism; the fixed support comprises a first cross beam (5) and a second cross beam (7) of the fixed support and a first fixed link or a second fixed link (6), wherein the first cross beam (5) and the second cross beam (7) are oppositely arranged and are respectively connected with the first quadrangular linkage mechanism and the second quadrangular linkage mechanism, and the first fixed link or the second fixed link (6) is connected with the first cross beam (5) and the second cross beam (7); one end of the electric drive pusher (8) is hinged with a sweeper frame (9), and the other end of the electric drive pusher (8) is hinged to the second cross beam (7) of the fixed support. According to the linkage lifting mechanism disclosed by the invention, misplacement can be prevented, and the sweeping effect is improved.

Description

Road-sweeper disc brush, round brush linkage lifting
Technical field:
The present invention relates to a kind of road-sweeper, specifically, relate to the linkage lifting of a kind of road-sweeper disc brush and round brush.
Background technology:
The elevating mechanism of road-sweeper cleaning element is the requisite part of road-sweeper, and road-sweeper is disc brush and round brush and earth surface when work, and bristle elastic deformation can occur and have relative motion with ground in this process.And when road-sweeper not in working order time, being separated of disc brush and round brush and ground must be ensured, the wearing and tearing of bristle can be reduced like this, extend the application life of road-sweeper, and the damage that disc brush and round brush support are encountered the obstruction on road surface and caused can be avoided.
Most road-sweeper in the market all can have two disc brushes (each side) and a round brush, and elevating mechanism is relatively simple, namely lifting is controlled by simple linkage independently power source, like this for a road-sweeper, three independently lifting drive sources will be had, add the manufacturing cost of road-sweeper.If just can be realized the synchronization lifting of disc brush and round brush by a power source, the cost of road-sweeper so just can be reduced.Meanwhile, especially for road-sweeper, when being operated in complex road condition, the high vibration in the course of work, can cause the vibration of disc brush and round brush, can have a strong impact on the normal work of road-sweeper, greatly reduce the effect of cleaning.Good elevating mechanism requires there is fast operation response speed, when disc brush and round brush move to desired location, requires enough dynamic stabilities, can not because of the vibration of car wobble effects working effect.
Therefore, be necessary to provide a kind of synchronization lifting mechanism controlled by a power source, and can ensure stable cleaning works state, thus complete cleaning task, prolongation cleaning agency and parts application life better.
Summary of the invention:
Technical problem: technical problem to be solved by this invention is for current road-sweeper the deficiencies in the prior art, provides a kind of road-sweeper disc brush, round brush linkage lifting.Road-sweeper disc brush of the present invention, round brush linkage lifting mainly comprise disc brush, round brush, disc brush motor, round brush motor, electric pushrod, quadrangle link gear, fixed support.
Summary of the invention: for solving the problems of the technologies described above, the invention provides a kind of road-sweeper disc brush, round brush linkage lifting, the second quadrangle link gear that this elevating mechanism comprises the first quadrangle link gear, is oppositely arranged with the first quadrangle link gear, connects fixed support, the electric pushrod of the first quadrangle link gear and the second quadrangle link gear;
Fixed support comprises and being oppositely arranged and the fixed support first crossbeam be connected with the second quadrangle link gear with the first quadrangle link gear respectively and second cross beam, the first fixed bar being connected first crossbeam and second cross beam or the second fixed bar;
Electric pushrod one end and road-sweeper vehicle frame hinged, the other end and support bracket fastened second cross beam hinged.
Preferably, first quadrangle link gear is identical with the second quadrangle link gear bit architecture, a wherein limit of the first quadrangle link gear is fixed edge, for fixing with vehicle frame, and fix this quadrangle in working face, other three limits are active edges, Article 1 active edges in active edges is bolted disc brush motor, Article 2 active edges is bolted round brush motor and round brush, Article 3 active edges connects Article 1 and Article 2 active edges, form quadrilateral structure, for completing the coherency operation of disc brush and round brush lifting action.
Preferably, support bracket fastened first crossbeam is connected with quadrangle link gear Article 3 active edges bolt with second cross beam.
Preferably, disc brush machine shaft and disc brush centre bore interference fit, and undertaken fastening by pin; Round brush machine shaft and round brush central axis transmit rotational power by chain.
Beneficial effect:
1) quadrangle link gear can make round brush consistent with disc brush lifting, completes interlock lifting action;
2) fixed support and electric pushrod improve lifting effect, and fixed support can make two disc brushes in left and right and round brush left and right sides rising height unanimously, and stabilized structure, prevents dislocation, improve cleaning effect;
3) electric pushrod outreach can be arranged, and completes the adjustment of lifting distance of disc brush, round brush, thus can adapt to different road-sweepers and working environment, and decrease the attrition of disc brush, round brush, extend the life-span on probation;
4) link lifting structure concision and compact, highly versatile, installation is simple, manufacturing cost is low, conveniently to load and unload on different road-sweepers.
Compared with prior art, tool of the present invention has the following advantages:
1) overcome traditional road-sweeper both sides disc brush, round brush independently controls, required three power sources and lifting gear, cause the inconsistent shortcoming of the operation height of both sides disc brush and angle of inclination.
2) use mechanism of the present invention can well reduce disc brush, round brush in the contact on non-operational phase and ground, effectively extend the application life of disc brush, round brush.
3) the present invention can overcome the problem of disc brush that body vibrations causes, round brush vibration, and steadiness is good, and disc brush, round brush can not rock in traveling process.
Accompanying drawing illustrates:
Fig. 1 is road-sweeper disc brush, round brush linkage lifting schematic diagram, has: 1, disc brush in figure; 2, disc brush motor; 3, quadrangle link gear Article 1 active edges; 4, quadrangle link gear first vehicle frame bearing; 5, fixed support first crossbeam; 6, fixed support first fixed bar; 7, fixed support second cross beam; 8, electric pushrod; 9, road-sweeper vehicle frame; 10, quadrangle link gear Article 3 active edges; 11, quadrangle link gear second vehicle frame bearing; 12, quadrangle link gear Article 2 active edges; 13, round brush motor; 14, round brush.
In Fig. 1, each structure is reduced to letter representation, quadrangle link gear Article 1 active edges 3 is expressed as AE, quadrangle link gear Article 2 active edges 12 is expressed as DF, quadrangle link gear Article 3 active edges 10 is expressed as BC, G is the tie point of fixed support second cross beam 7 and quadrangle link gear Article 3 active edges 10 before linkage lifting lifting, and H is electric pushrod 8 and fixed support second cross beam 7 pin joint.
Fig. 2 is quadrangle link gear schematic diagram, and B ', C ' in figure, E ', F ' are respectively reposition corresponding to B, C, E, F after the lifting of quadrangle link gear;
Fig. 3 is single-beam fixed support schematic diagram;
Fig. 4 is fixed support schematic diagram;
Fig. 5 is electric pushrod installation site P point schematic diagram, G ' for after linkage lifting lifting 100mm, the reposition that G point is corresponding;
Fig. 6 is electric pushrod thrust meter calculation and Analysis schematic diagram.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention will be further described.
Road-sweeper disc brush provided by the invention, round brush linkage lifting, the second quadrangle link gear that this elevating mechanism comprises the first quadrangle link gear, is oppositely arranged with the first quadrangle link gear, connects the fixed support of the first quadrangle link gear and the second quadrangle link gear, electric pushrod 8;
Fixed support comprises and being oppositely arranged and the fixed support first crossbeam 5 be connected with the second quadrangle link gear with the first quadrangle link gear respectively and second cross beam 7, the first fixed bar being connected first crossbeam 5 and second cross beam 7 or the second fixed bar 6;
Electric pushrod 8 one end and road-sweeper vehicle frame 9 hinged, the other end and support bracket fastened second cross beam 7 hinged.
First quadrangle link gear is identical with the second quadrangle link gear bit architecture, a wherein limit of the first quadrangle link gear is fixed edge, for fixing with vehicle frame, and fix this quadrangle in working face, other three limits are active edges, Article 1 active edges 3 in active edges is bolted disc brush motor 2, Article 2 active edges 12 is bolted round brush motor 13 and round brush 14, Article 3 active edges 10 connects Article 1 and Article 2 active edges, form quadrilateral structure, for completing the coherency operation of disc brush 1 and round brush 14 lifting action.Support bracket fastened first crossbeam 5 is connected with quadrangle link gear Article 3 active edges 10 bolt with second cross beam 7.
Disc brush motor 2 rotating shaft and disc brush 1 centre bore interference fit, and undertaken fastening by pin.Round brush motor 13 rotating shaft and round brush 14 central axis transmit rotational power by chain.Install and fastening disc brush 1 and round brush 14 time, the bristle of disc brush 1 and round brush 14 is reserved with the road clearance of 100mm under off working state (lifting state).
As shown in Figure 2 be quadrangle link gear rough schematic, each structure is reduced to letter representation.Wherein E point and F point be respectively disc brush and round brush duty time position, E ' and F ' point is then the position that disc brush and round brush lift, now road-sweeper is in non-cleaning state, and quadrangle link gear Article 1 active edges 3 is expressed as AE, quadrangle link gear Article 2 active edges 12 is expressed as DF, quadrangle link gear Article 3 active edges 10 is expressed as BC.AE, DF, BC represent the channel-section steel support connecting disc brush and round brush.First quadrangle link gear is expressed as ABCD, and A, B, C, D place is hinged, rotatably, and installs corresponding rolling bearing.After disc brush and round brush lift, the shape of this quadrangle link gear changes, and becomes AB ' C ' D, but still is a quadrangular mechanism, and meanwhile, disc brush and round brush position move to E ' and F ' point from E point and F point respectively.
This quadrangle link gear advantage is Stability Analysis of Structures, and in addition for quadrangle link gear, as long as apply power to its arbitrary active edges, the motion on this limit will drive other two active edges to move together.As long as this also just means that any active edges to quadrangle link gear applies the thrust in certain direction, the synchronous interaction that just can realize disc brush and round brush is elevated, this advantage place that namely this mechanism is maximum.
As shown in Figure 1, can find out that whole quadrangle link gear is two covers, be symmetrically distributed in the both sides of road-sweeper, it is identical that bilateral symmetry obtains component label sequence number.
For realizing two the disc brush synchronization liftings in left and right, select to fix a crossbeam 7 between quadrangle link gear Article 3 active edges 10 and the corresponding active edges of opposite side.Crossbeam adopts an open circles steel pipe material, a nut is welded at pipe two ends respectively, and stamps corresponding hole, just by the cooperation between bolts and nuts in quadrangle link gear Article 3 active edges, both sides quadrangle link gear Article 3 active edges 10 is fixed, as shown in Figure 3.Due to the error of processing and assemble, only fixed by the crossbeam 7 of centre, total there will be rocks by a relatively large margin, the left and right sides cannot realize real synchronization lifting, and due to the vibration of vehicle body in the process of road-sweeper work, the vibration of disc brush and round brush can be caused, have a strong impact on the normal work of road-sweeper, greatly reduce the effect of cleaning.
In order to solve the problem, again improve both sides quadrangle link gear fixed solution as shown in Figure 4.At the front certain distance of original crossbeam 7, arrange the crossbeam 5 of a same length, and assemble by same assembling mode, between two crossbeams 5 and 7, then weld two fixed bars 6.Two crossbeams 5 and 7 and two fixed bars 6 form a fixed structure be similar in " well " word, as shown in the thick lines in Fig. 4, form fixed support.For fixed support, in motion process, fixed support second cross beam 7 two ends can only in the plane that fixed support is formed, there will not be two ends, left and right one in front and one in back, one high and one low situation.Fixed support second cross beam 7 synchronous consistent with ensure that the rising height of two disc brushes 1 in left and right backward forward, and round brush 14 can level be pressed close to clean ground, and there will not be the situation that round brush 14 one end tilts.
The operating principle of electric pushrod is similar with common direct current generator, and direct current generator can realize the rotary motion of motor shaft after being energising, and when being oppositely energized, motor reversely rotates.Electric pushrod can realize the stretching motion of push rod after being then energising, when forward is energized time, push rod extends, and is oppositely energized, and push rod is regained.There is the raising height of 100mm on the centre distance ground of disc brush 1 and round brush 14 in work and off working state, namely quadrangle linkage lifting can make disc brush 1 and round brush 14 lifting 100mm, reduce the wearing and tearing on off working state and ground of disc brush 1 and round brush 2, increase the service life.This raising height according to the road-sweeper without type, can select the electric pushrod without stroke simultaneously, carries out the adjustment of rising height.As shown in Figure 5, power F 0what finally act on fixed support second cross beam 7 and quadrangle link gear Article 3 active edges 10 welds on burnt intersection point G, and G point is L apart from the length of quadrangle link gear Article 1 active edges 3 bG, according to the space on the base plate distance ground of road-sweeper, select the electric pushrod of corresponding stroke.
Suppose that the electric pushrod stroke selected is Δ R, the former length of electric pushrod is R 1, then the installation dimension of electric pushrod is R 1and R 2, wherein R 2=R 1+ Δ R, when namely the push rod of electric pushrod is for retracted state, its hole heart is apart from being R1, and when electric pushrod is for the state of extending, its hole heart distance is R2.According to geometrical relationship, put as the center of circle, R with G and G ' respectively 1and R 2for radius makes two circles, wherein G is the intersection point on second cross beam and a first quadrangle limit 10 before linkage lifting lifting, G ' for after quadrangle linkage lifting lifting 100mm, the reposition of G point.The intersection point P points of two circles are exactly the position that the non-telescoping end of electric pushrod 8 and vehicle frame 9 are hingedly mounted on vehicle frame.The telescopic end of electric pushrod 8 is connected with fixed support second cross beam 7, and connected mode is also hinged, rotatably.
By carrying out force analysis to lifting structure, determine the minimum thrust F needed for electric pushrod 0.Rotate quadrangle link gear Article 1 active edges 3AE and carry out force analysis, as shown in Figure 6, realize elevating mechanism and rotate, AE need with A point for rotating in the center of circle.What AE was subject to advocate will from two aspects, and power suffered by one Node B is mainly electric pushrod 8 thrust F in lifting process 0at the component in BC direction, the stressed F of its two AE bar mid point 1be mainly the gravity G of mechanism and clearing apparatus in lifting process 0component (because all there is rolling bearing all hinged turned positions, the frictional force in rotation process can be ignored) in AE bar vertical direction.Wherein α is electric pushrod 8 thrust F 0with the angle of quadrangle link gear Article 3 active edges 10BC, β is the corner of quadrangle link gear Article 1 active edges 3AE around A point.
Quadrangle link gear Article 1 active edges 3AE is analyzed, lists the moment equation that AE rotates around A point:
M = F 0 × cos α × cos β × l AB - F 1 × l AE 2 - - - ( 1 )
Be rewritten as:
M = F 0 × cos α × cos β × l AB - G 0 × sin β × l AE 2 - - - ( 2 )
Wherein α, β are all the changing values in lifting process, suppose that the excursion of α is for (α min, α max), the excursion of β is (β min, β max), electric pushrod complete field lifting process must meet M>0 in whole process.Analyze known, in lifting process, α is in reduction, so cos α is in increase; β is increasing gradually, and sin β is also in increase, and cos β is in reduction.When meet below inequality time, M can keep M>0 in whole process:
F 0 × cos α max × cos β max × l AB - G 0 × sin β max × l AE 2 > 0 - - - ( 3 )
Electric pushrod 8 installation site and collapsing length, quadrangle link gear length of connecting rod are all selected and are designed and obtain, and therefore can obtain the change procedure of α, β, thus obtain α min, α max, β min, β max, and calculate the F satisfied condition 0, then select the electric pushrod of suitable thrust.
Road-sweeper disc brush, round brush interlock lifting can be realized by the flexible of electric pushrod 8.The power source of electric pushrod 8 is batteries of road-sweeper, and the forward that can be realized electric pushrod by entire car controller is connected and oppositely connected, thus controls electric pushrod retracted position.
When road-sweeper starts to advance, also do not carry out cleaning task, electric pushrod 8 init state is for stretching out, and quadrangle link gear is in AB ' C ' D state, and disc brush and round brush all do not have and earth surface, effectively reduces the wearing and tearing of disc brush and round brush, increases the service life.After human pilot presses cleaning button, electric pushrod 8 shrinks, and contract by distance determines conduction time according to the electric pushrod 8 in program, when bristle is longer, suitably can reduce contract by distance, suitably can increase contract by distance when bristle is shorter.After contractive action completes, quadrangle link gear is in ABCD state, then opens disc brush motor 2 and round brush motor 13, carries out cleaning works.After cleaning works completes, first stop the running of disc brush motor 2 and round brush motor 13, then electric pushrod 8 stretches out, and gets back to initialized lifting state, disc brush 2 and round brush 13 no longer with earth surface, now driver can give it the gun, and gets back to guard station.
The present invention has following effect: 1) quadrangle link gear can make round brush and disc brush lifting be consistent, and completes interlock lifting effect; 2) fixed support and electric pushrod acting in conjunction realize lifting effect, and fixed support can ensure that quadrangle link gear is acted in concert, and make two disc brushes in left and right and round brush left and right sides rising height unanimously, prevent dislocation, improve cleaning effect; 3) electric pushrod outreach can accomplish that program regulates, therefore the adjustment of disc brush, round brush adjustable height can be accomplished, the cleaning works environment that the energy-conservation adaptation of rising-falling tone of disc brush, round brush is different, and decrease the attrition of disc brush, round brush, extend application life; 4) link lifting structure concision and compact, highly versatile, and install simple, manufacturing cost is low, conveniently mounts and dismounts on different road-sweepers.

Claims (4)

1. a road-sweeper disc brush, round brush linkage lifting, it is characterized in that, the second quadrangle link gear that this elevating mechanism comprises the first quadrangle link gear, is oppositely arranged with the first quadrangle link gear, connects the fixed support of the first quadrangle link gear and the second quadrangle link gear, electric pushrod (8);
Fixed support comprises and being oppositely arranged and the fixed support first crossbeam (5) be connected with the second quadrangle link gear with the first quadrangle link gear respectively and second cross beam (7), the first fixed bar being connected first crossbeam (5) and second cross beam (7) or the second fixed bar (6);
Electric pushrod (8) one end and road-sweeper vehicle frame (9) hinged, the other end and support bracket fastened second cross beam (7) hinged.
2. road-sweeper disc brush according to claim 1, round brush linkage lifting, it is characterized in that, first quadrangle link gear is identical with the second quadrangle link gear bit architecture, a wherein limit of the first quadrangle link gear is fixed edge, for fixing with vehicle frame, and fix this quadrangle in working face, other three limits are active edges, Article 1 active edges (3) in active edges is bolted disc brush motor (2), Article 2 active edges (12) is bolted round brush motor (13) and round brush (14), Article 3 active edges (10) connects Article 1 and Article 2 active edges, form quadrilateral structure, for completing the coherency operation of disc brush (1) and round brush (14) lifting action.
3. road-sweeper disc brush according to claim 1, round brush linkage lifting, it is characterized in that, support bracket fastened first crossbeam (5) is connected with quadrangle link gear Article 3 active edges (10) bolt with second cross beam (7).
4. the road-sweeper disc brush according to claim 1-3 any one, round brush linkage lifting, is characterized in that, (2) rotating shaft of disc brush motor and disc brush (1) centre bore interference fit, and undertaken fastening by pin; (13) rotating shaft of round brush motor and round brush (14) central axis transmit rotational power by chain.
CN201510012750.5A 2015-01-09 2015-01-09 Sweeper disc brush, round brush linkage lifting Expired - Fee Related CN104594256B (en)

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CN104594256B CN104594256B (en) 2016-05-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109706867A (en) * 2018-12-26 2019-05-03 长沙中联重科环境产业有限公司 Road cleaner
CN113751439A (en) * 2021-09-07 2021-12-07 兰剑智能科技股份有限公司 Water planting groove washs car
CN114515716A (en) * 2022-02-15 2022-05-20 航天华盛源机电（苏州）有限公司 Automatic cleaning and drying system for cooling fins

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516566A1 (en) * 1981-11-13 1983-05-20 Automoviles Utilitarios Sa Sweeper for excavator bucket loader - has articulating jacks levelling bucket with rotary brushes during unloading sweep
JPH0653625U (en) * 1992-12-24 1994-07-22 豊和工業株式会社 Rotating brush lifting device
CN2646201Y (en) * 2003-08-19 2004-10-06 沈阳伟达机械有限公司 Road sweeper without auxiliary engine
CN101333803A (en) * 2008-07-14 2008-12-31 马汝华 Road sweeper and sweeping method thereof
CN202288153U (en) * 2011-05-16 2012-07-04 南宁南机动力有限公司 Sweeper lifting mechanism for sweeping machine
CN202610747U (en) * 2012-05-17 2012-12-19 南通弗士特环保机械有限责任公司 Lifting mechanism for channel brushes of small size electric sweeper
CN204455946U (en) * 2015-01-09 2015-07-08 东南大学盐城新能源汽车研究院 Road-sweeper disc brush, round brush linkage lifting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2516566A1 (en) * 1981-11-13 1983-05-20 Automoviles Utilitarios Sa Sweeper for excavator bucket loader - has articulating jacks levelling bucket with rotary brushes during unloading sweep
JPH0653625U (en) * 1992-12-24 1994-07-22 豊和工業株式会社 Rotating brush lifting device
CN2646201Y (en) * 2003-08-19 2004-10-06 沈阳伟达机械有限公司 Road sweeper without auxiliary engine
CN101333803A (en) * 2008-07-14 2008-12-31 马汝华 Road sweeper and sweeping method thereof
CN202288153U (en) * 2011-05-16 2012-07-04 南宁南机动力有限公司 Sweeper lifting mechanism for sweeping machine
CN202610747U (en) * 2012-05-17 2012-12-19 南通弗士特环保机械有限责任公司 Lifting mechanism for channel brushes of small size electric sweeper
CN204455946U (en) * 2015-01-09 2015-07-08 东南大学盐城新能源汽车研究院 Road-sweeper disc brush, round brush linkage lifting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109706867A (en) * 2018-12-26 2019-05-03 长沙中联重科环境产业有限公司 Road cleaner
CN113751439A (en) * 2021-09-07 2021-12-07 兰剑智能科技股份有限公司 Water planting groove washs car
CN114515716A (en) * 2022-02-15 2022-05-20 航天华盛源机电（苏州）有限公司 Automatic cleaning and drying system for cooling fins
CN114515716B (en) * 2022-02-15 2022-12-06 苏州市华盛源机电有限公司 Automatic cleaning and drying system for radiating fins

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