CN213279864U - Video image analysis equipment for urban management violation detection - Google Patents
Video image analysis equipment for urban management violation detection Download PDFInfo
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- CN213279864U CN213279864U CN202022782372.8U CN202022782372U CN213279864U CN 213279864 U CN213279864 U CN 213279864U CN 202022782372 U CN202022782372 U CN 202022782372U CN 213279864 U CN213279864 U CN 213279864U
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Abstract
The utility model provides a video image analytical equipment for city management detection violating regulations belongs to video image analytical equipment technical field. The video image analysis equipment for urban management violation detection comprises a basic assembly, an orientation adjusting assembly and a dehumidifying and heat-dissipating assembly. Basic subassembly includes square case, U type pole, nut, intelligent video analysis appearance, head rod, sealing door, support column, second connecting rod, high-speed camera and backup pad, the backup pad is fixed the lower surface of square case, U type pole runs through the backup pad, nut thread bush is established on the U type pole, during the use, the refrigerator carries out quick radiating operation to the inner chamber of square case, realizes carrying out radiating operation to intelligent video analysis appearance promptly, and this analytical equipment is effectual to prevent that intelligent video analysis appearance from being influenced by moisture and high temperature, great improvement intelligent video analysis appearance's life.
Description
Technical Field
The utility model relates to a video image analytical equipment field particularly, relates to a video image analytical equipment that is used for city management detection violating regulations.
Background
Traffic violations are generally traffic violations, i.e. motor vehicles, non-motor vehicle drivers or pedestrians, violating road traffic safety regulations, traffic management and actions affecting traffic conditions. Additionally, a violation may also refer to a violation of conventional regulation handling.
At present, in the existing video image analysis equipment for urban management violation detection, the analysis equipment is used for a long time, and the moisture concentration in the analysis equipment is greater than a preset value in rainy and snowy weather, so that the service life of the analysis equipment is greatly shortened.
SUMMERY OF THE UTILITY MODEL
In order to compensate above not enough, the utility model provides a video image analytical equipment for city management detection violating regulations aims at improving because the problem that the moisture concentration in the analytical equipment is greater than the predetermined value is often shone to sleet weather.
The utility model discloses a realize like this:
the utility model provides a video image analysis equipment for city management detection violating regulations, including basic subassembly, position adjusting part and dehumidification cooling module.
The basic component comprises a square box, a U-shaped rod, a nut, an intelligent video analyzer, a first connecting rod, a sealing door, a supporting column, a second connecting rod, a high-speed camera and a supporting plate, the supporting plate is fixed on the lower surface of the square box, the U-shaped rod penetrates through the supporting plate, the nut is sleeved on the U-shaped rod in a threaded manner, one end of the first connecting rod is fixed on the upper surface of the intelligent video analyzer, the other end of the first connecting rod is fixed on the inner wall of the square box, the sealing door is fixed on the square box through a hinge, the lower end of the supporting column is rotatably arranged on the upper surface of the square box, one end of the second connecting rod is rotatably arranged in the supporting column, the other end of the second connecting rod is fixed on the lower surface of the high-speed camera, and the intelligent video analyzer is electrically connected with the high-speed camera.
The azimuth adjusting assembly comprises a motor, a gear transmission piece, a first fixing block, an electric cylinder, a second fixing block and a third fixing block, the motor is fixed to the upper surface of the square box, the output shaft of the motor and the supporting column are connected together through the gear transmission piece in a transmission mode, the first fixing block is fixed to the outer wall of the supporting column, the second fixing block is fixed to the lower surface of the high-speed camera, the third fixing block is fixed to the end portion of the electric cylinder, the third fixing block is rotatably arranged in the first fixing block, and the end portion of a piston rod of the electric cylinder is rotatably arranged in the second fixing block.
The dehumidification cooling assembly comprises a drying fan, a first guide pipe, a refrigerator, a temperature and humidity controller, a second guide pipe and an electromagnetic valve, wherein the drying fan is fixed on the upper surface of the square box, one end of the first guide pipe is fixed on the drying fan, the other end of the first guide pipe is arranged in the square box, the refrigerator and the temperature and humidity controller are fixed on the outer wall of the square box, the second guide pipe is arranged on the square box, the electromagnetic valve is arranged on the second guide pipe, and the drying fan, the refrigerator and the electromagnetic valve are electrically connected together with the temperature and humidity controller.
The utility model discloses an in one embodiment, the head rod includes head rod body and connection otic placode, it fixes to connect the otic placode the tip of head rod body, it fixes to connect the otic placode the upper surface of intelligent video analysis appearance.
The utility model discloses an in one embodiment, sealing door includes sealing door body and handheld portion, the sealing door body is fixed through the hinge page or leaf on the square case, handheld portion is fixed on the outer wall of sealing door body.
In an embodiment of the present invention, the base assembly further includes an observation window, and the observation window is provided on the sealing door.
In an embodiment of the present invention, the base assembly further includes a rotating member, the rotating member is fixed to the upper surface of the square box, and the lower end of the supporting column is fixed to the inside of the rotating member.
The utility model discloses an in the embodiment, the motor includes motor body and first protective housing, motor body with first protective housing all fixes the upper surface of square case, motor body establishes in first protective housing.
The utility model discloses an in one embodiment, gear drive spare includes first conical gear and second conical gear, first conical gear is fixed on the outer wall of support column, second conical gear is fixed on the output shaft of motor, first conical gear with second conical gear meshes.
The utility model discloses an in the embodiment, drying fan includes drying fan body and second protective housing, drying fan body with second protective housing all fixes the upper surface of square case, drying fan body establishes in the second protective housing.
The utility model discloses an in one embodiment, dehumidification radiator unit still includes dustproof otter board, dustproof otter board is fixed on the second protective housing.
In an embodiment of the present invention, the dehumidifying and heat dissipating assembly further includes an air guiding cover, and the air guiding cover is disposed at an end portion of the first conduit.
The utility model has the advantages that: the utility model, which is obtained by the design, is a video image analysis device for urban management violation detection, when the temperature and humidity controller monitors that the moisture concentration in the square box exceeds a preset value in the long-term use process of the analysis equipment, the drying fan is started to open the electromagnetic valve, the drying fan injects hot air into the square box, the gas in the square box is discharged through the second conduit, the exchange of the gas in the square box is accelerated, when the humidity in the square box meets the requirement, the drying fan and the electromagnetic valve are closed, when the temperature and humidity controller monitors that the temperature in the square box exceeds a preset value, the refrigerator is started, the refrigerator carries out rapid heat dissipation operation on the inner cavity of the square box, realize promptly carrying out the heat dissipation operation to intelligent video analysis appearance, this analytical equipment is effectual prevents that intelligent video analysis appearance from being influenced by moisture and high temperature, great improvement intelligent video analysis appearance's life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a video image analysis device for city management violation detection according to an embodiment of the present invention;
fig. 2 is a schematic view of a cross-sectional structure of a video image analysis device for city management violation detection according to an embodiment of the present invention;
fig. 3 is a relationship diagram of a base assembly and an orientation adjustment assembly provided by an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a dehumidifying and heat dissipating assembly according to an embodiment of the present invention.
In the figure: 100-a base component; 110-square box; a 120-U shaped rod; 130-a nut; 140-intelligent video analyzer; 150-a first connecting rod; 151-first connecting rod body; 152-connecting ear plates; 160-sealing door; 161-sealing the door body; 162-a hand-held portion; 170-observation window; 180-a rotating member; 190-support column; 191-a second connecting rod; 192-a high-speed camera; 193-a support plate; 200-an orientation adjustment assembly; 210-a motor; 211-the motor body; 212 — a first protective housing; 220-a gear drive; 221-a first bevel gear; 222-second bevel gear; 230-a first fixed block; 240-electric cylinder; 250-a second fixed block; 260-a third fixed block; 300-a dehumidifying and heat-dissipating component; 310-a drying fan; 311-drying fan body; 312-a second protective housing; 320-a first conduit; 330-a refrigerator; 340-a temperature and humidity controller; 350-a second conduit; 360-electromagnetic valve; 370-dustproof mesh plate; 380-wind scooper.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are 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.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
Referring to fig. 1-4, the present invention provides a technical solution: a video image analysis device for city management violation detection comprises a base assembly 100, an orientation adjusting assembly 200 and a dehumidifying and heat-dissipating assembly 300. The orientation adjusting assembly 200 and the dehumidifying and heat dissipating assembly 300 are both fixed on the base assembly 100, so that the service life of the intelligent video analyzer 140 is greatly prolonged.
Referring to fig. 1-3, the base assembly 100 includes a square box 110, a U-shaped rod 120, a nut 130, an intelligent video analyzer 140, a first connecting rod 150, sealing door 160, support column 190, second connecting rod 191, high-speed camera 192 and backup pad 193, backup pad 193 passes through the bolt fastening at the lower surface of square case 110, U-shaped pole 120 runs through backup pad 193, nut 130 threaded sleeve is established on U-shaped pole 120, the bolt fastening is passed through at the upper surface of intelligent video analysis appearance 140 to the one end of first connecting rod 150, the other end welding of first connecting rod 150 is on the inner wall of square case 110, first connecting rod 150 includes first connecting rod body 151 and engaging lug plate 152, engaging lug plate 152 welds the tip at first connecting rod body 151, engaging lug plate 152 passes through the bolt fastening at the upper surface of intelligent video analysis appearance 140, engaging lug plate 152 is convenient for fix the installation of intelligent video analysis appearance 140 on first connecting rod body 151.
The sealing door 160 is fixed on the square box 110 through a hinge, the sealing door 160 comprises a sealing door body 161 and a handheld portion 162, the sealing door body 161 is fixed on the square box 110 through a hinge, the handheld portion 162 is fixed on the outer wall of the sealing door body 161 through a bolt, the handheld portion 162 is convenient for opening or closing the sealing door body 161, the handheld portion 162 in this embodiment is a door handle, the base assembly 100 further comprises an observation window 170, the observation window 170 is arranged on the sealing door 160, the observation window 170 is convenient for real-time observation of the operation condition of an electric appliance in the square box 110, the lower end of the supporting column 190 is rotatably arranged on the upper surface of the square box 110, the base assembly 100 further comprises a rotating member 180, the rotating member 180 is fixed on the upper surface of the square box 110 through a bolt, the lower end of the supporting column 190 is connected in the rotating member 180 in a key, the rotating member 180 enables the supporting column 190 to rotate more stably, one end of the second connecting rod 191 is rotatably disposed in the supporting column 190, the other end of the second connecting rod 191 is fixed to the lower surface of the high-speed camera 192 through a bolt, and the intelligent video analyzer 140 is electrically connected to the high-speed camera 192.
Referring to fig. 1 and 2, the azimuth adjusting assembly 200 includes a motor 210, a gear transmission 220, a first fixing block 230, an electric cylinder 240, a second fixing block 250, and a third fixing block 260, the motor 210 is fixed on the upper surface of the square box 110 by bolts, the motor 210 includes a motor body 211 and a first protective housing 212, the motor body 211 and the first protective housing 212 are both fixed on the upper surface of the square box 110 by bolts, the motor body 211 is disposed in the first protective housing 212, the first protective housing 212 protects the motor body 211 from dust, an output shaft of the motor 210 and the supporting column 190 are drivingly connected together by the gear transmission 220, the gear transmission 220 includes a first bevel gear 221 and a second bevel gear 222, the first bevel gear 221 is welded on an outer wall of the supporting column 190, the second bevel gear 222 is welded on an output shaft of the motor 210, the first bevel gear 221 is engaged with the second bevel gear 222, the first bevel gear 221 and the second bevel gear 222 enable the output shaft of the motor 210 and the support column 190 to synchronously rotate, the first fixing block 230 is fixed on the outer wall of the support column 190 through bolts, the second fixing block 250 is fixed on the lower surface of the high-speed camera 192 through bolts, the third fixing block 260 is fixed at the end of the electric cylinder 240 through bolts, the third fixing block 260 is rotatably arranged in the first fixing block 230, and the end of the piston rod of the electric cylinder 240 is rotatably arranged in the second fixing block 250.
Referring to fig. 2 and 4, the dehumidifying and heat dissipating assembly 300 includes a drying fan 310, a first conduit 320, a refrigerator 330, a temperature and humidity controller 340, a second conduit 350 and an electromagnetic valve 360, the drying fan 310 is fixed on the upper surface of the square box 110 by bolts, the drying fan 310 includes a drying fan body 311 and a second protective casing 312, the drying fan body 311 and the second protective casing 312 are both fixed on the upper surface of the square box 110 by bolts, the drying fan body 311 is disposed in the second protective casing 312, the second protective casing 312 protects the drying fan body 311 from being eroded by rainwater, the dehumidifying and heat dissipating assembly 300 further includes a dust screen 370, the dust screen 370 is fixed on the second protective casing 312 by bolts, the dust screen 370 effectively prevents dust from entering the second protective casing 312, one end of the first conduit 320 is fixed on the drying fan 310 by a flange, the other end of the first conduit 320 is disposed in the square box 110, the dehumidifying and heat dissipating assembly 300 further includes an air guiding cover 380, the air guiding cover 380 is disposed at an end of the first guiding pipe 320, the air guiding cover 380 enables moisture in the square box 110 to be removed more rapidly, the refrigerator 330 and the temperature and humidity controller 340 are both fixed on an outer wall of the square box 110 by bolts, the second guiding pipe 350 is disposed on the square box 110, the electromagnetic valve 360 is disposed on the second guiding pipe 350, and the drying fan 310, the refrigerator 330 and the electromagnetic valve 360 are all electrically connected with the temperature and humidity controller 340.
Specifically, the working principle of the video image analysis equipment for urban management violation detection is as follows: when the analysis equipment is used, the analysis equipment is placed on a traffic monitoring rod, the U-shaped rod 120 penetrates through the monitoring rod and the supporting plate 193, the U-shaped rod 120 is fixed on the supporting plate 193 and the monitoring rod by the nut 130, namely, the analysis equipment is fixedly installed, in the process of shooting illegal behaviors, the rotation of an output shaft of the motor 210 drives the gear transmission piece 220 to rotate, the rotation of the gear transmission piece 220 drives the high-speed camera 192 to rotate, the high-speed camera 192 shoots road conditions at three hundred and sixty degrees, the expansion and contraction of a piston rod of the electric cylinder 240 controls the angle between the high-speed camera 192 and the square box 110 to change, the high-speed camera 192 shoots the road conditions without dead angles, and the analysis equipment can shoot the road conditions without dead angles; in the long-term use process of the analysis device, when the temperature and humidity controller 340 monitors that the moisture concentration in the square box 110 exceeds a preset value, the drying fan 310 is started to open the electromagnetic valve 360, hot air is injected into the square box 110 by the drying fan 310, air in the square box 110 is discharged through the second conduit 350, exchange of air in the square box 110 is accelerated, when the humidity in the square box 110 meets requirements, the drying fan 310 and the electromagnetic valve 360 are closed, when the temperature in the square box 110 monitored by the temperature and humidity controller 340 exceeds the preset value, the refrigerator 330 is started, the refrigerator 330 performs rapid heat dissipation operation on the inner cavity of the square box 110, namely, heat dissipation operation on the intelligent video analyzer 140 is achieved, the analysis device effectively prevents the intelligent video analyzer 140 from being influenced by moisture and high temperature, and the service life of the intelligent video analyzer 140 is greatly prolonged.
It should be noted that the specific model specifications of the intelligent video analyzer 140, the high-speed camera 192, the motor 210, the electric cylinder 240, the drying fan 310, the refrigerator 330, the temperature and humidity controller 340, and the electromagnetic valve 360 need to be determined according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, and therefore, detailed description is omitted.
The power supply and the principle of the intelligent video analyzer 140, the high-speed camera 192, the motor 210, the electric cylinder 240, the drying fan 310, the refrigerator 330, the temperature and humidity controller 340 and the electromagnetic valve 360 are clear to those skilled in the art and will not be described in detail herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A video image analysis equipment for city management violation detection, characterized by comprising
The base component (100) comprises a square box (110), a U-shaped rod (120), a nut (130), an intelligent video analyzer (140), a first connecting rod (150), a sealing door (160), a supporting column (190), a second connecting rod (191), a high-speed camera (192) and a supporting plate (193), wherein the supporting plate (193) is fixed on the lower surface of the square box (110), the U-shaped rod (120) penetrates through the supporting plate (193), the nut (130) is sleeved on the U-shaped rod (120) in a threaded manner, one end of the first connecting rod (150) is fixed on the upper surface of the intelligent video analyzer (140), the other end of the first connecting rod (150) is fixed on the inner wall of the square box (110), the sealing door (160) is fixed on the square box (110) through a hinge, the lower end of the supporting column (190) is rotatably arranged on the upper surface of the square box (110), one end of the second connecting rod (191) is rotatably arranged in the supporting column (190), the other end of the second connecting rod (191) is fixed to the lower surface of the high-speed camera (192), and the intelligent video analyzer (140) is electrically connected with the high-speed camera (192);
the azimuth adjusting assembly (200), the azimuth adjusting assembly (200) comprises a motor (210), a gear transmission piece (220), a first fixed block (230), an electric cylinder (240), a second fixed block (250) and a third fixed block (260), the motor (210) is fixed on the upper surface of the square box (110), the output shaft of the motor (210) is connected with the supporting column (190) through the gear transmission piece (220), the first fixing block (230) is fixed on the outer wall of the supporting column (190), the second fixing block (250) is fixed on the lower surface of the high-speed camera (192), the third fixed block (260) is fixed at the end of the electric cylinder (240), the third fixed block (260) is rotatably arranged in the first fixed block (230), the end part of the piston rod of the electric cylinder (240) is rotatably arranged in the second fixed block (250);
a dehumidifying and heat dissipating assembly (300), wherein the dehumidifying and heat dissipating assembly (300) comprises a drying fan (310), a first conduit (320), a refrigerator (330), a temperature and humidity controller (340), a second conduit (350) and an electromagnetic valve (360), the drying fan (310) is fixed on the upper surface of the square box (110), one end of the first conduit (320) is fixed on the drying fan (310), the other end of the first conduit (320) is arranged in the square box (110), the refrigerator (330) and the temperature and humidity controller (340) are both fixed on the outer wall of the square box (110), the second conduit (350) is arranged on the square box (110), the electromagnetic valve (360) is arranged on the second conduit (350), the drying fan (310), the refrigerator (330) and the electromagnetic valve (360) are electrically connected with the temperature and humidity controller (340).
2. The video image analysis device for city management violation detection according to claim 1, wherein said first connecting rod (150) comprises a first connecting rod body (151) and a connecting ear plate (152), said connecting ear plate (152) is fixed at the end of said first connecting rod body (151), and said connecting ear plate (152) is fixed at the upper surface of said intelligent video analyzer (140).
3. The video image analysis device for city management violation detection according to claim 1, wherein the sealing door (160) comprises a sealing door body (161) and a handheld portion (162), the sealing door body (161) is fixed on the square box (110) through a hinge, and the handheld portion (162) is fixed on an outer wall of the sealing door body (161).
4. A video image analysis device for city management violation detection as set forth in claim 1 wherein said base assembly (100) further comprises a viewing window (170), said viewing window (170) being disposed on said sealing door (160).
5. The video image analysis device for city management violation detection as recited in claim 1, wherein said base assembly (100) further comprises a rotating member (180), said rotating member (180) is fixed on an upper surface of said square box (110), and a lower end of said support post (190) is fixed in said rotating member (180).
6. The video image analysis device for city management violation detection according to claim 1, wherein the motor (210) comprises a motor body (211) and a first protective housing (212), the motor body (211) and the first protective housing (212) are both fixed on the upper surface of the square box (110), and the motor body (211) is arranged in the first protective housing (212).
7. A video image analysis device for city management violation detection according to claim 1, wherein said gear transmission (220) comprises a first bevel gear (221) and a second bevel gear (222), said first bevel gear (221) being fixed on the outer wall of said support post (190), said second bevel gear (222) being fixed on the output shaft of said motor (210), said first bevel gear (221) and said second bevel gear (222) being in mesh.
8. The video image analysis device for city management violation detection according to claim 1, wherein the drying fan (310) comprises a drying fan body (311) and a second protective housing (312), the drying fan body (311) and the second protective housing (312) are both fixed on the upper surface of the square box (110), and the drying fan body (311) is arranged in the second protective housing (312).
9. The video image analysis device for city management violation detection as set forth in claim 8 wherein said moisture and heat removal assembly (300) further comprises a dust screen (370), said dust screen (370) being affixed to said second protective housing (312).
10. The video image analysis device for city management violation detection according to claim 1, wherein said dehumidifying heat dissipating assembly (300) further comprises a wind scooper (380), said wind scooper (380) being disposed at an end of said first conduit (320).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022782372.8U CN213279864U (en) | 2020-11-26 | 2020-11-26 | Video image analysis equipment for urban management violation detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022782372.8U CN213279864U (en) | 2020-11-26 | 2020-11-26 | Video image analysis equipment for urban management violation detection |
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| Publication Number | Publication Date |
|---|---|
| CN213279864U true CN213279864U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022782372.8U Active CN213279864U (en) | 2020-11-26 | 2020-11-26 | Video image analysis equipment for urban management violation detection |
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| Country | Link |
|---|---|
| CN (1) | CN213279864U (en) |
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2020
- 2020-11-26 CN CN202022782372.8U patent/CN213279864U/en active Active
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