CN112317370A - Self-triggering traffic light with dust removal module - Google Patents

Self-triggering traffic light with dust removal module Download PDF

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Publication number
CN112317370A
CN112317370A CN202010992421.2A CN202010992421A CN112317370A CN 112317370 A CN112317370 A CN 112317370A CN 202010992421 A CN202010992421 A CN 202010992421A CN 112317370 A CN112317370 A CN 112317370A
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China
Prior art keywords
cavities
magnetic
moving
dust removal
shell
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Granted
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CN202010992421.2A
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Chinese (zh)
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CN112317370B (en
Inventor
罗江强
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Anhui Zhaoli Opto Electronics Technology Co Ltd
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00Cleaning by methods involving the use of tools
    • B08B1/10Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/14Wipes; Absorbent members, e.g. swabs or sponges
    • B08B1/143Wipes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00Accessories or details of general applicability for machines or apparatus for cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/02Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/095Traffic lights
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

The invention discloses a self-triggering traffic light with a dust removal module, which comprises a shell, wherein two extrusion cavities are symmetrically arranged in the shell, a rotating cavity is arranged in the shell and is positioned between the two extrusion cavities, two compression cavities and two moving cavities are symmetrically arranged in the shell, the two moving cavities are positioned between the two compression cavities, and the two compression cavities and the two moving cavities are positioned below the corresponding extrusion cavities. The device utilizes natural wind to drive the wind cup and rotates, the wind cup drives the sponge piece and removes dust, remove removal enhancement dust removal effect through the removal about the sponge piece, still shake off the dust through the shrink of sponge piece and collect, and can make the sponge piece have very strong dust removal effect always, this device utilizes natural wind-force to remove the ash, and the use that does not have the electric energy accords with present social energy saving and emission reduction's requirement, and do not need the manual work to clean, prevent that dangerous possibility from appearing when the staff cleans the traffic lights.

Description

Self-triggering traffic light with dust removal module
Technical Field
The invention relates to the field of traffic light dust removal, in particular to a self-triggering traffic light with a dust removal module.
Background
The traffic light is used as an important traffic command signal, has very important functions, is clear and accurate, and seriously relates to the personal safety of each traveler, and the current traffic light has the following problems in the use process aiming at the dust removal of the traffic light:
because the traffic lights are mostly arranged in outdoor places, the dust can be raised by vehicles coming and going on the roads, the dust can be attached to the traffic lights, the display effect of the traffic lights is poor, the traffic lights can not be clearly displayed for a long time, if drivers do not see the traffic lights signals clearly, the possibility of traffic accidents can exist, most of the existing traffic lights dust removing devices only use the sponge to simply move up and down to remove dust, the dust removing effect is not good, and a few traffic lights need manual cleaning, but the positions of a few traffic lights are higher, and the workers are easy to cause dangers by manual cleaning.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a self-triggering traffic light with a dust removal module.
In order to achieve the purpose, the invention adopts the following technical scheme:
a self-triggering traffic light with a dust removal module comprises a shell, wherein two extrusion cavities are symmetrically arranged in the shell, a rotating cavity is arranged in the shell and is positioned between the two extrusion cavities, two compression cavities and two moving cavities are symmetrically arranged in the shell and are positioned between the two compression cavities, the two compression cavities and the two moving cavities are positioned below the corresponding extrusion cavities, a mounting groove is arranged on the front side of the shell and is positioned between the two moving cavities, a collecting groove is arranged at the inner bottom of the mounting groove, and first openings communicated with the mounting groove are formed in the inner walls of the two moving cavities; the triggering mechanism comprises a rotating rod vertically arranged in a rotating cavity, the lower end of the rotating rod is rotatably connected with the inner bottom of the rotating cavity, the upper end of the rotating rod extends to the outside and is provided with an air cup, two symmetrical magnetic blocks are fixedly connected to the part of the rotating rod, which is positioned in the rotating cavity, magnetic sliding plates for left and right movement are vertically arranged in the two extrusion cavities, the two magnetic sliding plates are mutually repelled by the same polarity of the adjacent surfaces of the corresponding magnetic blocks, and the two magnetic sliding plates are elastically connected with the inner wall of one side, close to the rotating cavity, of the extrusion cavity through a first spring; the moving mechanism comprises first magnetic sliding blocks which are respectively arranged in two compression cavities, the two first magnetic sliding blocks are in sliding connection with the inner walls of the corresponding compression cavities, second magnetic sliding blocks are arranged in the two moving cavities, the adjacent surfaces of the two first magnetic sliding blocks and the corresponding second magnetic sliding blocks are opposite in attraction, and the spaces of one sides, far away from the rotating cavity, of the two compression cavities and the corresponding extrusion cavity are communicated through ventilation pipes.
Preferably, the dust removal device also comprises a dust removal mechanism, the dust removal mechanism comprises a hollow strip horizontally arranged in the mounting groove, two ends of the hollow strip respectively penetrate through the corresponding first openings, and is fixedly connected with the corresponding second magnetic slide block, a moving strip for moving left and right is horizontally arranged in the hollow strip, the left end and the right end of the moving strip are respectively elastically connected with the inner walls of the two sides of the hollow strip through second springs, a second opening is arranged on the inner wall of the rear side of the hollow strip, a fixing plate for moving left and right is arranged in the second opening, the front end of the fixed plate is fixedly connected with the rear end of the movable strip, a mounting plate is arranged behind the hollow strip, the front end of mounting panel and the rear end fixed connection of fixed plate, the equal fixedly connected with button head in both ends supports the stick about the mounting panel, the rear side fixedly connected with sponge piece of mounting panel.
Preferably, a plurality of triangular abutting blocks are arranged on the left inner wall and the right inner wall of the mounting groove.
Preferably, the level is equipped with the second magnetic sheet in the mounting groove, the second magnetic sheet is located a plurality of triangles and supports the below of piece, the both ends of second magnetic sheet all with the inner wall fixed connection of mounting groove, horizontal installation has the first magnetic sheet with second magnetic sheet matched with in the sponge piece.
Compared with the prior art, the invention has the beneficial effects that:
1. be provided with moving mechanism, move about from top to bottom through two second magnetic slider drive hollow strip, when hollow strip reciprocates, can make the button head support the stick and take place to support the removal with a plurality of triangle landmasses, make the button head support the stick and remove about, the button head supports the stick and drives the mounting panel and remove, the mounting panel drives the dust of sponge piece on to the traffic lights and cleans, the mounting panel drives through the fixed plate and removes the strip and remove about in hollow strip, because the elastic action of second spring, make remove and remove the strip and remove the back and can recover at once, also when hollow strip reciprocates, can drive the sponge piece and remove about, remove the reinforcing dust removal effect through removing about the sponge piece, and do not need the manual work to clean, prevent that the staff that appears dangerous possibility when cleaning the traffic lights.
2. Be provided with dust removal mechanism, move the sponge piece through hollow strip when moving to the bottom, first magnetic sheet in the sponge piece is repellent with the second magnetic sheet homopolar of fixed connection in the mounting groove, first magnetic sheet drives the sponge piece shrink, the shrink of sponge piece can shake off sponge piece top dust, fall into the collecting vat and collect, when hollow strip drives the sponge piece and shifts up, first magnetic sheet is not in homopolar repellent's liein with the second magnetic sheet, the sponge piece recovers, because there is not the dust on the sponge piece, make the sponge piece have very strong dust removal effect always.
3. Wind brought by natural wind power or when an automobile moves enables the wind cup to rotate, the wind cup drives the rotating rod to rotate, the rotating rod drives the two magnetic blocks to rotate, when the magnetic blocks rotate to the point closest to the magnetic sliding plates, the magnetic blocks repel each other with the same polarity as the magnetic sliding blocks, the two magnetic sliding plates move in the direction far away from the rotating cavity, dust is removed by utilizing the natural wind power, electric energy is not used, and the requirements of energy conservation and emission reduction of the current society are met.
Drawings
Fig. 1 is a schematic structural diagram of a self-triggering traffic light with a dust removal module according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic view of the dust removal mechanism of FIG. 1;
FIG. 4 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 5 is a schematic view of the dust removal mechanism of fig. 4.
In the figure: the device comprises a shell 1, a rotating cavity 2, an extrusion cavity 3, a mounting groove 4, a compression cavity 5, a moving cavity 6, a collecting groove 7, a rotating rod 8, a wind cup 9, a magnetic block 10, a magnetic sliding plate 11, a first spring 12, a ventilation pipe 13, a first magnetic sliding block 14, a second magnetic sliding block 15, a first opening 16, a hollow strip 17, a triangular support block 18, a moving strip 19, a second spring 20, a second opening 21, a fixed plate 22, a mounting plate 23, a round-head support rod 24, a sponge block 25, a first magnetic plate 26 and a second magnetic plate 27.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-3, a traffic light with dust removal module for self-triggering, including casing 1, the symmetry is equipped with two extrusion chambeies 3 in casing 1, be equipped with in the casing 1 and rotate chamber 2, it is located between two extrusion chambeies 3 to rotate chamber 2, the symmetry is equipped with two compression chambeies 5 and two removal chambeies 6 in casing 1, two removal chambeies 6 all are located between two compression chambeies 5, two compression chambeies 5 and two removal chambeies 6 all are located the below of corresponding extrusion chamber 3, the front side of casing 1 is equipped with mounting groove 4, mounting groove 4 is located between two removal chambeies 6, collecting vat 7 is installed to the interior bottom of mounting groove 4, all set up the first opening 16 with mounting groove 4 intercommunication on the inner wall of two removal chambeies 6;
the device comprises a trigger mechanism, wherein the trigger mechanism comprises a rotating rod 8 vertically arranged in a rotating cavity 2, the lower end of the rotating rod 8 is rotatably connected with the inner bottom of the rotating cavity 2, the upper end of the rotating rod 8 extends to the outside and is provided with an air cup 9, two symmetrical magnetic blocks 10 are fixedly connected to the part of the rotating rod 8 positioned in the rotating cavity 2, magnetic sliding plates 11 used for moving left and right are vertically arranged in two extrusion cavities 3, the two magnetic sliding plates 11 are respectively repelled by the same polarity of the adjacent surfaces of the corresponding magnetic blocks 10, and the two magnetic sliding plates 11 are respectively and elastically connected with the inner wall of one side of the extrusion cavity 3, which is close to the rotating cavity 2, through a first spring 12;
moving mechanism, moving mechanism is including setting up first magnetic slide 14 in two compression chamber 5 respectively, two first magnetic slide 14 all with the inner wall sliding connection of corresponding compression chamber 5, all be equipped with second magnetic slide 15 in two removal chambeies 6, two first magnetic slide 14 attract with the looks adjacent surface opposite poles of corresponding second magnetic slide 15, two compression chamber 5 all communicate through ventilation pipe 13 with the corresponding extrusion chamber 3 one side space of keeping away from rotation chamber 2, use the left side as an example, the left side space that is located left compression chamber 5 and is located left extrusion chamber 3 passes through ventilation pipe 13 and communicates.
Wherein, the dust removing device also comprises a dust removing mechanism, the dust removing mechanism comprises a hollow strip 17 horizontally arranged in the mounting groove 4, two ends of the hollow strip 17 respectively penetrate through the corresponding first openings 16 and are fixedly connected with the corresponding second magnetic slide blocks 15, a moving strip 19 for moving left and right is horizontally arranged in the hollow strip 17, the left and right ends of the moving strip 19 are respectively and elastically connected with the inner walls of two sides of the hollow strip 17 through second springs 20, the inner wall of the rear side of the hollow strip 17 is provided with a second opening 21, a fixing plate 22 for moving left and right is arranged in the second opening 21, the front end of the fixing plate 22 is fixedly connected with the rear end of the moving strip 19, a mounting plate 23 is arranged behind the hollow strip 17, the front end of the mounting plate 23 is fixedly connected with the rear end of the fixing plate 22, the left and right ends of the mounting plate 23 are both fixedly connected with round head support rods 24, the rear, the traffic light wiping device can enable the traffic light not to be wiped manually, and the possibility of danger when the traffic light is wiped by workers is prevented.
Wherein, all be equipped with a plurality of triangles on the inner wall about mounting groove 4 and support piece 18, a plurality of triangles on the left and right sides inner wall of mounting groove 4 support whole evenly distributed of piece 18 to the triangle on the inner wall of mounting groove 4 left side supports piece 18 and the triangle on the inner wall of right side and supports 18 dislocation distribution, when the button head supports stick 24 and supports the triangle and support piece 18, can make sponge piece 25 remove about, through sponge piece 25 remove about and strengthen dust removal effect.
When the wind cup is used, the wind cup 9 rotates through natural wind power, the wind cup 9 drives the rotating rod 8 to rotate, the rotating rod 8 drives the two magnetic blocks 10 to rotate, when the magnetic blocks 10 rotate to the point closest to the magnetic sliding plates 11, like poles of the magnetic blocks 10 and the magnetic sliding plates 11 repel each other, the two magnetic sliding plates 11 move towards the direction far away from the rotating cavity 2, when the rotating rod 8 continues to rotate, the magnetic blocks 10 and the magnetic sliding plates 11 are not at the point closest to each other, under the elastic action of the first springs 12, the two magnetic sliding plates 11 move towards the direction close to the rotating cavity 2, when the two magnetic sliding plates 11 move towards the direction far away from the rotating cavity 2, due to the action of air pressure, the two first magnetic sliding blocks 14 move downwards, when the two magnetic sliding plates 11 move towards the direction close to the rotating cavity 2, the two first magnetic sliding blocks 14 move upwards, and the two first magnetic sliding blocks 14 both drive the second magnetic sliding blocks 15 corresponding to move upwards and downwards, the natural wind power is used for removing dust without using electric energy, the requirements of energy conservation and emission reduction of the current society are met, manual wiping is not needed, and the possibility of danger when workers wipe traffic lights is prevented;
two second magnetic sliding blocks 15 drive the hollow strip 17 to move up and down, when the hollow strip 17 moves up and down, the round head supporting rod 24 can be abutted against the triangular supporting blocks 18, taking the left structure as an example, when the triangular supporting blocks 18 are abutted against the round head supporting rod 24 positioned on the left side, the round head supporting rod 24 moves right to drive the mounting plate 23 to move right, the mounting plate 23 drives the sponge block 25 to move right, when the round head supporting rod 24 positioned on the left side is not abutted against the triangular supporting blocks 18, under the elastic action of the second spring 20, the mounting plate 23 drives the sponge block 25 to move left, namely the round head supporting rod 24 moves left and right, the round head supporting rod 24 drives the mounting plate 23 to move left and right, the mounting plate 23 drives the sponge block 25 to wipe dust on the traffic lights, the mounting plate 23 drives the moving strip 19 to move left and right in the hollow strip 17 through the fixing plate 22, due to the elastic action of the second spring 20, the movable strip 19 can be restored immediately after moving left and right, namely when the hollow strip 17 moves up and down, the sponge block 25 can be driven to move left and right, and the dust removal effect is enhanced through the left and right movement of the sponge block 25.
It is worth mentioning that under the condition of no wind, due to the elastic action of the first spring 12, the magnetic sliding plate 11 is pulled in the direction of approaching the rotating rod 8, that is, the hollow bar 17 is positioned at the top of the mounting groove 4, so as to avoid the possibility that the traffic light is blocked by the hollow bar 17 to influence the line of sight of the driver.
Example 2
Referring to fig. 4-5, the difference between this embodiment and embodiment 1 is that a second magnetic plate 27 is horizontally disposed in the mounting groove 4, the second magnetic plate 27 is located below the plurality of triangular supporting blocks 18, both ends of the second magnetic plate 27 are fixedly connected to the inner wall of the mounting groove 4, a first magnetic plate 26 matched with the second magnetic plate 27 is horizontally disposed in the sponge block 25, the adjacent surfaces of the first magnetic plate 26 and the second magnetic plate 27 are repelled by the same polarity, and dust on the sponge block 25 is shaken off by contraction of the sponge block 25, so that the sponge block 25 has a strong dust removal effect all the time.
When the traffic light is wiped by the sponge block 25, dust can be covered at the upper end and the lower end of the sponge block 25, the dust at the lower end of the sponge block 25 can directly fall into the collecting tank 7, the dust at the upper end of the sponge block 25 can not be cleaned, and the subsequent dust removal effect of the sponge block 25 can be influenced, in the embodiment, when the hollow strip 17 drives the sponge block 25 to move downwards to the lowest end, the first magnetic plate 26 in the sponge block 25 and the second magnetic plate 27 fixedly connected in the mounting groove 4 repel each other in the same polarity, the first magnetic plate 26 drives the sponge block 25 to shrink, the dust at the upper end of the sponge block 25 falls into the collecting tank 7 through a gap formed by the sponge block 25 and the mounting groove 4 for collection, when the hollow strip 17 drives the sponge block 25 to move upwards, the first magnetic plate 26 and the second magnetic plate 27 are not in the positions where the same polarity repels each other, the sponge block 25 recovers, and no dust exists on the sponge block 25, the sponge block 25 has strong dust removal effect all the time;
it is worth mentioning that the device is suitable for areas with large natural wind power (such as coastal areas).
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention should be covered by the scope of the present invention.

Claims (4)

1. A self-triggering traffic light with a dust removal module, comprising:
the extrusion die comprises a shell (1), wherein two extrusion cavities (3) are symmetrically arranged in the shell (1), a rotation cavity (2) is arranged in the shell (1), the rotation cavity (2) is positioned between the two extrusion cavities (3), two compression cavities (5) and two moving cavities (6) are symmetrically arranged in the shell (1), the two moving cavities (6) are positioned between the two compression cavities (5), the two compression cavities (5) and the two moving cavities (6) are positioned below the corresponding extrusion cavities (3), a mounting groove (4) is arranged on the front side of the shell (1), the mounting groove (4) is positioned between the two moving cavities (6), a collecting groove (7) is arranged at the inner bottom of the mounting groove (4), and first openings (16) communicated with the mounting groove (4) are formed in the inner walls of the two moving cavities (6);
the device comprises a trigger mechanism, wherein the trigger mechanism comprises a rotating rod (8) vertically arranged in a rotating cavity (2), the lower end of the rotating rod (8) is rotatably connected with the inner bottom of the rotating cavity (2), the upper end of the rotating rod (8) extends to the outside and is provided with an air cup (9), two symmetrical magnetic blocks (10) are fixedly connected to the part of the rotating rod (8) located in the rotating cavity (2), magnetic sliding plates (11) used for moving left and right are vertically arranged in two extrusion cavities (3), the two magnetic sliding plates (11) are repelled with the same poles of the adjacent surfaces of the corresponding magnetic blocks (10), and the two magnetic sliding plates (11) are elastically connected with the inner wall of one side, close to the rotating cavity (2), of the extrusion cavity (3) through a first spring (12);
the moving mechanism comprises first magnetic sliders (14) respectively arranged in two compression cavities (5), the two first magnetic sliders (14) are connected with the inner walls of the corresponding compression cavities (5) in a sliding mode, second magnetic sliders (15) are arranged in the two moving cavities (6), opposite attraction is carried out on the adjacent surfaces of the first magnetic sliders (14) and the corresponding second magnetic sliders (15), and the spaces of one sides, far away from the rotating cavity (2), of the compression cavities (5) and the corresponding extrusion cavities (3) are communicated through ventilation pipes (13).
2. The self-triggering traffic light with the dust removal module is characterized by further comprising a dust removal mechanism, the dust removal mechanism comprises a hollow bar (17) horizontally arranged in the installation groove (4), two ends of the hollow bar (17) respectively penetrate through corresponding first openings (16) and are fixedly connected with corresponding second magnetic sliders (15), a moving bar (19) used for moving left and right is horizontally arranged in the hollow bar (17), the left and right ends of the moving bar (19) are respectively and elastically connected with inner walls of two sides of the hollow bar (17) through second springs (20), a second opening (21) is arranged on the inner wall of the rear side of the hollow bar (17), a fixing plate (22) used for moving left and right is arranged in the second opening (21), and the front end of the fixing plate (22) is fixedly connected with the rear end of the moving bar (19), the rear of hollow strip (17) is equipped with mounting panel (23), the front end of mounting panel (23) and the rear end fixed connection of fixed plate (22), the equal fixedly connected with button head in both ends supports stick (24) about mounting panel (23), the rear side fixedly connected with sponge piece (25) of mounting panel (23).
3. The traffic light with dust removal module for self-triggered transportation according to claim 1, wherein a plurality of triangular support blocks (18) are disposed on the left and right inner walls of the mounting groove (4).
4. The traffic light with the dust removal module for the self-triggered traffic is characterized in that a second magnetic plate (27) is horizontally arranged in the installation groove (4), the second magnetic plate (27) is located below the triangular support blocks (18), two ends of the second magnetic plate (27) are fixedly connected with the inner wall of the installation groove (4), and a first magnetic plate (26) matched with the second magnetic plate (27) is horizontally arranged in the sponge block (25).
CN202010992421.2A 2020-09-21 2020-09-21 Self-triggering traffic light with dust removal module Active CN112317370B (en)

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CN211375787U (en) * 2019-10-15 2020-08-28 江苏博尧软件技术有限公司 Intelligent traffic signal lamp convenient to remove dust
CN110965492A (en) * 2019-12-21 2020-04-07 刘善军 Road reflector with self-cleaning function
CN211015913U (en) * 2020-01-03 2020-07-14 四川极简时代照明工程有限公司 Road signal lamp capable of preventing pollution and removing dust
CN111391793A (en) * 2020-04-08 2020-07-10 罗江强 Environment-friendly building site concrete mixer truck lasts belt cleaning device
CN111501606A (en) * 2020-05-11 2020-08-07 刘善军 Energy-concerving and environment-protective type automatically cleaning road sign

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