Tunnel monitoring camera protection device capable of automatically removing dust

Abstract

The invention belongs to the technical field of tunnel engineering. The invention provides a tunnel monitoring camera protection device capable of automatically cleaning dust, and aims to solve the problems of inaccurate monitoring data and poor monitoring effect caused by non-ideal cleaning effect of an existing monitoring camera auxiliary device on dust on the surface of a camera. Comprising a buffer base, a rotating motor, a double-layer protection mechanism, a transparent observation plate and an ash removal mechanism; wherein the buffer base is rotationally connected with the double-layer protection mechanism, and the ash removal mechanism is arranged in the double-layer protection mechanism; the transparent observation plate is located in front of the monitoring camera. The double-layer protection mechanism is used for conducting full-surrounding protection on the monitoring camera, dust is prevented from falling on the surface of the monitoring camera, the dust removing mechanism removes the dust on the transparent observation plate, meanwhile, the removed dust is discharged to the position below the double-layer protection mechanism, and the situation that the removed dust is located in front of the monitoring camera after flying off is prevented; the monitoring effect of the monitoring camera is improved.

Description

Technical Field

[0001] This invention belongs to the field of tunnel engineering technology, specifically relating to a protective device for tunnel monitoring cameras that can automatically remove dust. Background Technology

[0002] Tunnel construction monitoring cameras are primarily used for real-time monitoring of the geological structure, construction progress, and safety hazards within tunnels. Common types include borehole panoramic imagers, panoramic imaging rangefinder cameras, and hyperspectral cameras. Currently, monitoring cameras are often installed exposed on the tunnel walls. The complex environment during tunnel construction, with its dust, humidity, and flying rocks from blasting, severely impacts the applicability and safety of these cameras. Camera installation and monitoring also involve adjusting the camera's viewing angle to improve image acquisition capabilities. However, existing monitoring cameras often have limited auxiliary functions, possessing only specific capabilities, and thus cannot effectively improve the applicability and safety of tunnel deformation monitoring cameras.

[0003] Patent CN117489354A discloses a monitoring device, including a base. A support column is bolted to the top of the base, and a transmission box is bolted to the top of the support column. Brackets are bolted to both sides of the top of the transmission box. A rotating shaft is provided on the top of the transmission box and rotatably sleeved with the two brackets. A driven wheel is keyed to the right end of the rotating shaft. A monitoring camera is bolted to the middle of the top of the rotating shaft. Infrared cameras are bolted to the top of the rotating shaft and to both sides of the monitoring camera. A rotating rod is rotatably sleeved at the top of the transmission box. An impeller is bolted to the top of the rotating rod, and a power mechanism is keyed to the bottom of the rotating rod. An adjustment mechanism is internally connected to the driven wheel, and the power mechanism and the adjustment mechanism are hinged. In use, the worm gear drives the main sprocket to rotate, the main sprocket drives the chain to rotate, and the chain drives the secondary sprocket to rotate. The radius of the main sprocket is three times that of the secondary sprocket, which can accelerate the secondary sprocket. The secondary sprocket drives the rotating rod to rotate, and the rotating rod drives the impeller to rotate. The rapidly rotating impeller can generate airflow upwards, which can blow away dust from the surveillance camera and infrared camera.

[0004] However, the above technical solution relies solely on the airflow generated by the impeller to blow away dust from the camera surface. In actual use, after the impeller stops rotating, the scattered dust spreads around and re-adheres to the camera surface. Therefore, the cleaning effect of the above technical solution is not ideal, resulting in inaccurate monitoring data and reducing the monitoring effect of the monitoring camera. Summary of the Invention

[0005] The purpose of this invention is to overcome the problem that existing monitoring camera auxiliary devices are not effective at cleaning dust from the surface of the camera lens, resulting in inaccurate monitoring data and poor monitoring performance.

[0006] To achieve the above objectives, the present invention adopts the following technical approach: It provides an automatic dust-removing protective device for tunnel monitoring cameras, comprising a buffer base, a rotary motor, a double-layer protective mechanism, a transparent observation plate, and a dust-removing mechanism. The buffer base is rotatably connected to the double-layer protective mechanism, and the dust-removing mechanism is located inside the double-layer protective mechanism. The transparent observation plate is located in front of the monitoring camera. The double-layer protective mechanism in this invention provides full-enclosure protection for the monitoring camera, preventing dust from settling on its surface. The dust-removing mechanism removes dust from the transparent observation plate and simultaneously discharges the removed dust below the double-layer protective mechanism, preventing the cleaned dust from scattering in front of the monitoring camera and improving the monitoring effect.

[0007] Based on the above technical concept, the technical solution adopted by this invention is as follows: A tunnel monitoring camera protection device with automatic dust removal capability, comprising: A buffer base is installed on the side wall of the tunnel; The double-layer protective mechanism is rotatably mounted on top of the buffer base to protect the monitoring camera placed inside the double-layer protective mechanism. A transparent observation panel is embedded in the double-layer protective structure and located in front of the monitoring camera; The dust removal mechanism, connected to the double-layer protective mechanism, is used to wipe away the dust on the transparent observation plate and discharge the wiped dust to the bottom of the double-layer protective mechanism to prevent the wiped dust from spreading and affecting the monitoring accuracy of the monitoring camera.

[0008] To clean dust from the transparent observation panel while simultaneously protecting the monitoring camera, the preferred double-layer protective mechanism in the aforementioned technical solution includes: Rotary electric motor; The outer protective shell has an opening on the side; the rotary motor is connected to the inner bottom surface of the outer protective shell, and the output end of the rotary motor passes through the outer protective shell and is connected to the buffer base. An inner protective cylinder is located inside the outer protective shell, and a transparent observation plate is embedded in the outer surface of the inner protective cylinder; the monitoring camera is located inside the inner protective cylinder. The movable protective plate is slidably connected to the outer protective shell.

[0009] To thoroughly clean and remove dust from the transparent observation panel, preventing dust from re-entering the panel and affecting the camera's image capture, and to prevent dust from re-adhering to the camera's imaging components, thereby improving the camera's monitoring performance, the dust removal mechanism further includes: The dust removal assembly is located between the outer protective shell and the inner protective cylinder, and is connected to the inner protective cylinder; The ash discharge assembly is located between the outer protective shell and the inner protective cylinder, and is connected to the ash cleaning assembly and the movable protective plate, respectively. The drive component is located between the outer protective shell and the inner protective cylinder, and is connected to the dust removal component and the movable protective plate respectively. It is used to drive the dust removal component to wipe the dust off the transparent observation plate, and drive the dust discharge component to discharge the wiped dust to the bottom of the double-layer protective mechanism to prevent the wiped dust from spreading and affecting the detection accuracy of the monitoring camera.

[0010] To ensure effective cleaning of the transparent observation panel, the above technical solution is further specified, and the dust removal components include: The cleaning plate is slidably mounted on the side of the inner protective cylinder, and the side of the cleaning plate is connected to the drive assembly through the first connecting rod; the cleaning plate has an installation groove on the side that contacts the inner protective cylinder. Multiple brushes are installed in the mounting groove and are in contact with the transparent observation plate.

[0011] To prevent the cleaned-up dust from being stirred up and spreading in front of the camera's imaging components, the above technical solution is further specified, and the dust removal component includes: The telescopic exhaust pipe is connected at one end to the inner bottom surface of the outer protective shell and at the other end to the drive assembly; The intake pipe is connected at one end to the telescopic exhaust pipe and at the other end to the mounting groove. The ash discharge pipe is located at the bottom of the mounting groove, and its lower end passes through the outer protective shell and is located below the outer protective shell.

[0012] To further ensure the effective cleaning of the transparent observation panel, i.e., to isolate the transparent observation panel from the outside environment during the cleaning process, the above technical solution is further specified, and the driving component includes: The dust removal driver is located on the bottom surface of the outer protective housing, and a drive gear is provided on the output end of the dust removal driver; The first arc-shaped strip is connected to the drive gear on one side and to the movable protective plate on the other side, and the end of the first arc-shaped strip is connected to the telescopic exhaust pipe. The second arc-shaped strip is located on the side of the drive gear away from the first arc-shaped strip. The side of the second arc-shaped strip is meshed with the drive gear, and the end of the second arc-shaped strip is connected to the dust removal plate through the first connecting rod.

[0013] To further enhance the dust removal effect on the brush, the above technical solution is further refined by installing two symmetrically arranged airflow control plates inside the mounting groove.

[0014] To further improve ash removal efficiency, the above technical solution is further specified: each airflow control plate is a corrugated plate structure, and the airflow control plate is provided with multiple through holes.

[0015] To further limit the shooting range of the monitoring camera, the above technical solution is further defined by an adjustment mechanism inside the protective casing for adjusting the pitch angle of the monitoring camera. The adjustment mechanism includes: The bracket is installed on the inner bottom surface of the outer protective shell; A horizontal plate is rotatably connected to the bracket, and the monitoring camera is mounted on the upper surface of the horizontal plate; The telescopic rod is rotatably connected at one end to the bracket and at the other end to the horizontal plate.

[0016] To further limit the impact of tunnel underground vibrations on the operation of the monitoring camera, the above technical solution is further specified, and the buffer base includes: Mounting bracket, installed on the tunnel sidewall; The buffer connecting frame is connected to the mounting frame at one end and has a fixed base at the other end, which abuts against the bottom surface of the double-layer protective mechanism. A cushioning pad is placed between the mounting bracket and the cushioning connection bracket. Beneficial effects

[0017] This invention combines a monitoring camera, a double-layer protective mechanism, a transparent observation plate, and a dust removal mechanism. By utilizing the double-layer protective mechanism and the transparent observation plate, the monitoring camera can be fully surrounded and protected, preventing dust from falling directly onto the camera surface. The dust removal mechanism is only needed to clean the dust on the transparent observation plate, ensuring clear images from the monitoring camera and accurate monitoring results. This also prevents dust from accumulating in the corners and crevices of the monitoring camera, reducing the difficulty of cleaning the camera. This invention, through the combined design of a dust removal component and a dust discharge component, can clean the dust on the transparent observation plate and discharge the cleaned dust to the bottom of the double-layer protective mechanism through the dust discharge component, that is, to discharge the dust below the monitoring camera, so as to prevent the cleaned dust from spreading in front of the monitoring camera and to prevent the dust from obstructing the camera lens, thereby further improving the monitoring effect of the monitoring camera. This invention, through the combined design of a dust removal component, a dust discharge component, and a drive component, can clean the dust on the transparent observation plate while using a movable protective plate to isolate the transparent observation plate from the outside world, preventing dust from continuously adhering to the transparent observation plate. This improves the dust cleaning effect while driving the dust discharge component to operate, thereby further improving the cleaning effect of the transparent observation plate and thus further enhancing the monitoring effect of the monitoring camera. This invention utilizes a combined design of a dust removal plate, a brush, and an airflow control plate. The airflow can divide the interior of the dust removal plate into two low-speed airflow passage zones and a high-speed airflow passage zone located between these two low-speed airflow passage zones. The pressure difference between the high-speed airflow zone and the low-speed airflow zone is used to drive the dust on the brush to be quickly discharged, thereby improving the dust removal efficiency. This invention, through the combined design of a rotary motor, a double-layer protective mechanism, and an adjustment mechanism, allows the shooting range of the detection camera to be adjusted in four directions: up, down, left, and right, thus making it suitable for different construction scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a tunnel monitoring camera protection device with automatic dust removal capability provided in an embodiment of the present invention; Figure 2 for Figure 1 Top view after the outer protective shell cover has been removed; Figure 3 for Figure 1 Half-section view of the device shown from the left view direction; Figure 4 for Figure 2 Schematic diagram of the double-layer protective structure; Figure 5 for Figure 4 A schematic diagram of the device from another perspective; Figure 6 for Figure 4 A schematic diagram of the device from another perspective; Figure 7 A schematic diagram showing the connection relationship between the dust removal mechanism and the protective plate; Figure 8 for Figure 7 Schematic diagram of the structure of the medium-duty ash removal board; Figure 9 for Figure 7 Cross-sectional view of the device shown; Figure 10 This is a schematic diagram of the airflow control panel. Figure 11 Left view of the adjustment mechanism; Figure 12 This is a schematic diagram of the adjustment mechanism; Figure 13 This is a schematic diagram of the structure of the buffer base; Figure 14 for Figure 1 A schematic diagram of the device after removing the cover plate, movable protective plate and transparent observation plate of the outer protective shell; Figure 15 for Figure 1A schematic diagram of the installation location of the device shown.

[0020] The components include: 1. Buffer base; 11. Mounting frame; 12. Buffer connecting frame; 13. Buffer pad; 14. Fixed chassis; 2. Double-layer protective mechanism; 21. Outer protective shell; 22. Inner protective cylinder; 23. Movable protective plate; 24. Ball bearing; 3. Transparent observation plate; 4. Dust removal mechanism; 41. Dust removal plate; 42. Brush; 43. Telescopic exhaust pipe; 44. Air inlet pipe; 45. Dust discharge pipe; 46. Dust removal driver; 46a. Drive gear; 47. First arc-shaped strip; 48. Second arc-shaped strip; 49. Airflow control plate; 5. Rotary motor; 6. Adjustment mechanism; 61. Bracket; 62. Horizontal plate; 63. Telescopic rod; 7. First connecting rod; 8. Monitoring camera; 9. Tunnel. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] In the description of this invention, it should be understood that the terms "length direction," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features limited to "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] The inventors discovered that current monitoring camera auxiliary devices have the following problems when in use: 1. Tunnel 9 will inevitably encounter strong vibrations from the ground vein, which will have some impact on the monitoring equipment, greatly reducing the monitoring effect. In severe cases, it may even damage the equipment, causing losses and delaying the project progress. 2. Currently, the monitoring cameras are often installed exposed on the side wall of Tunnel 9. Considering the complex environment during the tunnel construction period, dust, moisture and flying rocks from blasting seriously affect the applicability and safety of the monitoring cameras. 3. Relying solely on the airflow generated by the impeller to blow away dust from the camera surface is insufficient in actual use. A large amount of dust will still adhere to the surface of the monitoring camera. Furthermore, after the impeller stops rotating, the scattered dust will spread around and re-adhere to the surface of the monitoring camera. Therefore, the cleaning effect of the existing auxiliary devices for monitoring cameras is not ideal, resulting in inaccurate monitoring data and poor monitoring performance.

[0025] Based on the above findings, this application proposes an automatic dust-removing protective device for tunnel monitoring cameras. This device includes a buffer base 1, a double-layer protective mechanism 2, a transparent observation plate 3, a dust-removing mechanism 4, a rotary motor 5, and an adjustment mechanism 6. The application achieves better monitoring performance through the following design: 1. Tunnel 9 will inevitably encounter strong vibrations generated by ground vibrations, which will have some impact on the monitoring device, resulting in poor monitoring effect. In severe cases, it may even damage the device, causing losses and delaying the project progress. The buffer base 1 can prevent ground vibrations from seriously affecting the operation of the monitoring camera 8. 2. The double-layer protective mechanism 2 and the transparent observation plate 3 can provide full protection for the monitoring camera 8, ensuring the safety of the monitoring camera and preventing dust from accumulating in hard-to-clean areas such as the corners and gaps of the monitoring camera; 3. The dust removal mechanism 4 can remove the dust on the front structure of the monitoring camera 8 and discharge the removed dust to the bottom of the double-layer protective mechanism 2 through the dust discharge component, so as to prevent the cleaned dust from spreading in the air and thus blocking the camera lens of the monitoring camera, thereby further improving the monitoring effect of the monitoring camera and obtaining more accurate data. 4. The rotary motor 5 and the adjustment mechanism 6 can adjust the viewing angle of the monitoring camera to improve the camera's image acquisition capabilities, including adjustments for looking down, looking up, looking left, and looking right, in order to obtain richer and more multi-layered monitoring data. Example 1

[0026] This embodiment provides a tunnel monitoring camera protection device with automatic dust removal capability, such as... Figures 1 to 15 As shown, it includes a buffer base 1, a double-layer protective mechanism 2, a transparent observation plate 3, a dust removal mechanism 4, a rotary motor 5, and an adjustment mechanism 6.

[0027] In practical use, the buffer base 1 can be fixed to the side wall of the tunnel 9 using bolts. The buffer base 1 plays a buffering role, offsetting most of the vibration from the side wall of the tunnel 9, and avoiding damage to the device and loss of monitoring data. The buffer base 1 includes a mounting bracket 11, a buffer connecting bracket 12, a buffer pad 13, and a fixed base 14; Specifically, the mounting frame 11 includes two circular mounting pieces, which are fixedly connected by multiple connecting columns. Multiple reinforcing ribs are fixedly provided on the side of the connecting columns to improve the tensile and torsional strength of the mounting frame 11. One end of the mounting frame 11 is fixedly connected to the side wall of the tunnel 9 by bolts, and the other end is fixedly connected to the buffer connecting frame 12 by fastening screws. The buffer pad 13 is a circular sheet structure and is disposed between the mounting bracket 11 and the buffer connecting bracket 12; wherein, the fastening screw passes through the buffer pad 13 and is fixedly connected to the buffer connecting bracket 12. The buffer connecting frame 12 includes an annular connecting piece and multiple buffer inclined rods arranged in a circular pattern fixedly on the annular connecting piece. The end of each buffer inclined rod away from the annular connecting piece is fixedly connected to the fixed base 14. The fixed base 14 is in contact with the outer bottom surface of the double-layer protection mechanism 2. In this way, the vibration from the side wall of the tunnel 9 is transmitted to the double-layer protection mechanism 2 through the buffer pad 13 and the buffer connecting frame 12, which can greatly reduce the vibration intensity and achieve the purpose of protecting the monitoring camera 8.

[0028] It should be noted that the material of the cushioning pad 13 is not limited in the embodiments of the present invention. For example, the material of the cushioning pad 13 is sponge.

[0029] The fixed end of the rotary motor 5 is fixedly mounted on the double-layer protective mechanism 2, and the output shaft of the rotary motor 5 passes through the double-layer protective mechanism 2 and is fixedly connected to the mounting bracket 11. In practical applications, after the rotary motor 5 is started, since the output shaft of the rotary motor 5 is fixed, the fixed end of the rotary motor 5 rotates, and the fixed end of the rotary motor 5 drives the double-layer protective mechanism 2 to rotate synchronously. It should be noted that the rotary motor provided in this embodiment of the invention is prior art, and this embodiment of the invention does not improve upon it.

[0030] The double-layer protective mechanism 2 includes an outer protective shell 21, an inner protective cylinder 22, and a movable protective plate 23; Specifically, the outer protective shell 21 is a cylindrical structure with a central cavity, and the side of the outer protective shell 21 has an opening for sliding connection with the movable protective plate 23; wherein, the fixed end of the rotary motor 5 is fixedly disposed on the bottom surface inside the cavity of the outer protective shell 21. The movable protective plate 23 is an arc-shaped plate structure and is vertically slidably installed in the receiving cavity of the outer protective shell 21. The side of the movable protective plate 23 is fixedly connected to the dust removal mechanism 4. In actual use, the movable protective plate 23 is opened, and the monitoring camera 8 can monitor whether the deformation of the tunnel 9 exceeds the limit during the construction period through the transparent detection plate 3 located inside the movable protective plate 23.

[0031] The monitoring camera 8 provided in this embodiment of the invention is existing technology, and this embodiment of the invention does not make any improvements to it.

[0032] The inner protective cylinder 22 is a cylindrical structure with the upper and lower parts connected, and the inner protective cylinder 22 is fixedly installed inside the outer protective shell 21; wherein, the inner protective cylinder 22 has an opening on its side, which is used to install the transparent observation plate 3.

[0033] The transparent observation plate 3 has an arc-shaped plate structure and is fixedly installed in the opening on the side of the inner protective cylinder 22 so that the monitoring camera 8 installed in the inner protective cylinder 22 can perform monitoring. It should be noted that the material of the transparent observation plate 3 is not limited in this embodiment of the invention. For example, the material of the transparent observation plate 3 is glass or plastic.

[0034] The dust removal mechanism 4 is disposed inside the outer protective shell 21 and is located between the outer protective shell 21 and the inner protective cylinder 22; the dust removal mechanism 4 includes a dust removal component, a dust discharge component and a drive component; The dust removal assembly includes a dust removal plate 41 and multiple brushes 42. Specifically, the cleaning plate 41 has an arc-shaped sheet structure, and the inner surface of the cleaning plate 41 is in contact with the outer surface of the inner protective cylinder 22; wherein, an installation groove is provided on the side of the cleaning plate 41 that is in contact with the outer surface of the inner protective cylinder 22, and the installation groove is used to fix and install each brush 42. Each brush 42 is divided into two vertical columns, which are symmetrically arranged in the mounting groove of the dust removal plate 41. Each brush 42 is fixedly connected to the dust removal plate 41. The brush 42 is used to clean the dust on the transparent observation plate 3. A dust discharge channel is formed between the two columns of brushes 42. The dust discharge channel is used to cooperate with the dust discharge component to discharge the cleaned dust.

[0035] In practical applications, the upper and lower ends of the dust removal plate 41 near the inner protective cylinder 22 are respectively provided with sliding rings. Correspondingly, an annular sliding groove matching and connected to the sliding ring is opened on the outer surface of the inner protective cylinder 22. The present invention ensures the smooth operation of the dust removal plate 41 and the fit between the dust removal plate 41 and the transparent observation plate 3 through the sliding connection of the sliding ring and the annular sliding groove, thereby ensuring the effective removal of dust on the transparent observation plate 3.

[0036] The ash removal assembly includes a telescopic exhaust pipe 43, an air inlet pipe 44, an ash removal pipe 45, and an ash removal actuator 46; The telescopic exhaust pipe 43 is a deformable tubular structure. Preferably, the telescopic exhaust pipe 43 is a telescopic corrugated pipe. Specifically, one end of the telescopic exhaust pipe 43 is fixedly connected to the drive assembly, and the other end is fixedly connected to the inner bottom surface of the outer protective shell 21. The end of the telescopic exhaust pipe 43 away from the drive assembly is provided with an air inlet, and a one-way air inlet valve is fixedly installed inside the air inlet. The end of the telescopic exhaust pipe 43 connected to the drive assembly is fixedly connected to one end of the air inlet pipe 44. The end of the air inlet pipe 44 away from the drive assembly is fixedly connected to the dust removal plate 41. The interior of the air inlet pipe 44 is connected to the interior of the telescopic exhaust pipe 43 and the mounting groove of the dust removal plate 41. The ash discharge pipe 45 is fixedly installed at the bottom of the dust removal plate 41, and the ash discharge plate 45 communicates with the mounting groove of the dust removal plate 41 to discharge dust on the brush 42 from the ash discharge pipe 45. A one-way exhaust valve is provided at the port of the ash discharge pipe 45, ensuring that gas inside the ash discharge pipe 45 can only be discharged to the outside. The one-way exhaust valve in this embodiment is prior art, and this embodiment does not improve upon it.

[0037] The drive assembly includes a dust removal driver 46, a first arc-shaped strip 47, and a second arc-shaped strip 48; Specifically, the dust removal driver 46 is fixedly disposed between the outer protective shell 21 and the inner protective cylinder 22, and a drive gear 46a is fixedly disposed on the output end of the dust removal driver 46; The first arc-shaped strip 47 and the second arc-shaped strip 48 are symmetrically arranged with respect to the drive gear 46a, and the first arc-shaped strip 47 and the second arc-shaped strip 48 are respectively meshed with the drive gear 46a. The side of the first arc-shaped strip 47 away from the drive gear 46a is fixedly connected to the side of the movable protective plate 23, and the end of the first arc-shaped strip 47 is fixedly connected to the telescopic exhaust pipe 43 through an L-shaped connector; wherein, the L-shaped connector is prior art, and the present invention does not improve it; The end of the second arc-shaped strip 48 is fixedly connected to the side of the ash discharge plate 41 via the first connecting rod 7; wherein the first connecting rod 7 is an L-shaped rod structure.

[0038] The working principle of the dust removal mechanism 4 provided by the present invention is as follows: the dust removal driver 46 is started, and the dust removal driver 46 drives the first arc strip 47 and the second arc strip 48 to move in opposite directions at the same time through the drive gear 46a; The second arc-shaped strip 48 drives the dust removal plate 42 to move from one side of the transparent observation plate 3 to the other side of the transparent observation plate 3. While the dust removal plate 41 is moving, the brush 42 located inside the dust removal plate 41 cleans the dust on the surface of the transparent observation plate 3. At the same time, such as Figure 7As shown, the first arc-shaped strip 47 causes the telescopic exhaust pipe 43 to retract, reducing the internal volume of the telescopic exhaust pipe 43. This allows the gas in the telescopic exhaust pipe 43 to pass through the air inlet pipe 44 and enter the dust removal plate 41. Under the guidance of the airflow, the dust on the brush 42 is discharged from the dust removal plate 41 and then discharged through the dust discharge pipe 41 to the bottom of the double-layer protective mechanism 2, preventing dust from spreading and ensuring the cleaning effect on the transparent observation plate 3. At the same time, the first arc-shaped strip 47 causes the movable protective plate 23 to close, isolating the transparent observation plate 3 from the outside world and preventing external dust from adhering to the surface of the transparent observation plate 3 during the cleaning process, further improving the cleaning effect on the transparent observation plate 3.

[0039] After cleaning is completed, the drive gear 46a rotates in the opposite direction. The drive gear 46a, through the first arc-shaped bar 47 and the second arc-shaped bar 48, simultaneously drives the cleaning plate 41 and the movable protective plate 23 back to their initial positions. At this time, the telescopic exhaust pipe 43 is extended to its initial state. Outside air enters the telescopic exhaust pipe 43 through the one-way intake valve, and the telescopic exhaust pipe 43 begins to store air until the cleaning plate 41 returns to its initial position for the next cleaning cycle. Figure 2 and Figure 7 All images show the state after the cleaning process by cleaning mechanism 4 is completed.

[0040] The adjustment mechanism 6 includes a bracket 61, a cross plate 62, and a telescopic rod 63; Specifically, such as Figure 3 and Figure 11 As shown, the bracket 61 is an inverted T-shaped mechanism, and the bracket 61 is fixedly installed on the inner bottom surface of the outer protective shell 21, and the bracket 61 is located inside the inner protective cylinder 22; The horizontal plate 62 is located at the upper end of the bracket 61, and one end of the horizontal plate 62 is rotatably connected to the bracket 61, and the other end is rotatably connected to the telescopic rod 63. The end of the telescopic rod 63 away from the horizontal plate 62 is rotatably connected to the side of the bracket 61. The bracket 61, the horizontal plate 62 and the telescopic rod 63 form a triangular structure, and the monitoring camera 8 is fixedly installed on the upper surface of the horizontal plate 62.

[0041] It should be noted that the rotational connection method between the bracket 61, the horizontal plate 62 and the telescopic rod 63 in the embodiment of the present invention is prior art, and the present invention improves upon it. Also, the telescopic rod 63 in the embodiment of the present invention is prior art, and the present invention does not improve upon it. Preferably, the telescopic rod 63 is an electric telescopic rod.

[0042] In practical applications, the adjustment mechanism 6 is installed inside the inner protective cylinder 22, and the monitoring direction of the monitoring camera 8 is facing the transparent observation plate 3. Therefore, the monitoring camera 8 is in a closed state, which has the effect of anti-collision and dustproof, and can quickly and flexibly adjust the monitoring angle of the monitoring camera 8 in the downward and upward directions by driving the telescopic rod 63 to change its length. Example 2

[0043] Based on Example 1, the difference from Example 1 is as follows: Figure 9 and Figure 10 As shown, in the embodiment of the present invention, two symmetrically arranged airflow control plates 9 are fixedly installed in the mounting groove of the dust removal plate 41, and the two airflow control plates 9 are located in the dust discharge air passage of the dust removal plate 41.

[0044] Specifically, the airflow control plate 9 has a wave-shaped plate structure, and the two airflow control plates 9 are symmetrically arranged, thus forming a variable-diameter air passage between the two airflow control plates 9. In this way, after the gas in the air inlet pipe 44 enters the dust removal plate 41, it is divided into three airflows. The airflows on the left and right sides pass through the brush 42 and are discharged from the ash discharge pipe 45. During this process, the airflow speed slows down due to the obstruction of the brush 42. The airflow in the middle enters the variable-diameter air passage and continuously changes the diameter of the channel formed by the airflow control plates 49 on the left and right sides. The airflow speed changes continuously and accelerates at the narrow part of the channel. At this time, the air pressure is low, which will draw the low-speed airflow on the left and right sides through the dust removal brush into the middle variable-diameter channel. During this process, the low-speed airflow carries in the dust on the brush 42 and finally discharges the dust-laden airflow from the ash discharge pipe 45 through the variable-diameter channel, thus completing the dust removal and ash discharge operation. Example 3

[0045] Based on Example 1, the difference from both Example 1 and Example 2 is that, Figure 2 and Figure 3 As shown, an arc-shaped groove is provided on the inner bottom surface of the outer protective shell 21. Multiple balls 24 are provided in the arc-shaped groove. The multiple balls 24 are located below the movable protective plate 23 and are in contact with the movable protective plate 23. The balls 24 are used to support the movable protective plate 23 and reduce the friction generated when it moves.

[0046] Implementation Case: Taking the cleaning of dust on the transparent observation plate 3 as an example, the usage steps of the tunnel monitoring camera protection device with automatic dust removal capability provided by the present invention are explained, specifically including the following steps: S1: Install the automatically dust-removing tunnel monitoring camera protection device provided by the invention on the side wall of tunnel 9 using mounting bolts; S2: Start the dust removal driver 46. The dust removal driver 46 drives the first arc-shaped bar 47 and the second arc-shaped bar 48 to move in opposite directions through the drive gear 46a. In this step, the second arc-shaped strip 48 moves the dust removal plate 41 from one side of the transparent observation plate 3 to the other side of the transparent observation plate 3, and the brush 42 cleans the dust on the transparent observation plate 3. At the same time, the first arc-shaped strip 47 drives the telescopic exhaust pipe 43 to retract, so that the gas in the telescopic exhaust pipe 43 enters the dust removal plate 41 after passing through the air intake pipe 44. Under the guidance of the airflow, the dust on the brush 42 is discharged from the dust removal plate 41, and then discharged to the bottom of the double-layer protective mechanism 2 through the dust discharge pipe 41, preventing dust from spreading in front of the monitoring camera 8 and ensuring the cleaning effect on the transparent observation plate 3. S3: After cleaning is completed, the drive gear 46a rotates in the opposite direction. The drive gear 46a drives the cleaning plate 41 and the movable protective plate 23 back to their initial positions through the first arc strip 47 and the second arc strip 48 respectively. During the process of the movable protective plate 23 returning to its initial position, the telescopic exhaust pipe 43 is stretched to its initial state and begins to store air for the next cleaning. At this time, the movable protective plate 23 no longer blocks the opening of the outer protective shell 41 so that the monitoring camera 8 can operate normally.

[0047] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A protective device for tunnel monitoring cameras with automatic dust removal capability, characterized in that, include: A buffer base (1) is installed on the side wall of the tunnel; The double-layer protective mechanism (2) is rotatably mounted on the top of the buffer base (1) to protect the monitoring camera (8) placed inside the double-layer protective mechanism (2); A transparent observation panel (3) is embedded in the double-layer protective mechanism (2) and located in front of the monitoring camera (8); The dust removal mechanism (4) is connected to the double-layer protection mechanism (2) to wipe the dust off the transparent observation plate (3) and discharge the wiped dust to the bottom of the double-layer protection mechanism (2) to prevent the wiped dust from spreading and affecting the monitoring accuracy of the monitoring camera (8).

2. The tunnel monitoring camera protection device with automatic dust removal capability according to claim 1, characterized in that, The double-layer protective mechanism (2) includes: Rotary motor (5); The outer protective shell (21) has an opening on the side; the rotary motor (5) is connected to the inner bottom surface of the outer protective shell (21), and the output end of the rotary motor (5) passes through the outer protective shell (21) and is connected to the buffer base (1); The inner protective cylinder (22) is located inside the outer protective shell (21), and the transparent observation plate (3) is embedded in the outer surface of the inner protective cylinder (22); the monitoring camera (8) is located inside the inner protective cylinder (22); The movable protective plate (23) is slidably connected to the outer protective shell (21).

3. The tunnel monitoring camera protection device with automatic dust removal capability according to claim 2, characterized in that, The dust removal mechanism (4) includes: The dust removal assembly is disposed between the outer protective shell (21) and the inner protective cylinder (22) and is connected to the inner protective cylinder (22); The ash discharge assembly is located between the outer protective shell (21) and the inner protective cylinder (22), and is connected to the ash cleaning assembly and the movable protective plate (23) respectively; The drive assembly is located between the outer protective shell (21) and the inner protective cylinder (22), and is connected to the dust removal assembly and the movable protective plate (23) respectively. It is used to drive the dust removal assembly to wipe the dust on the transparent observation plate (3) and drive the dust discharge assembly to discharge the wiped dust to the bottom of the double-layer protective mechanism (2) to avoid the wiped dust spreading and affecting the detection accuracy of the monitoring camera (8).

4. The tunnel monitoring camera protection device with automatic dust removal capability according to claim 3, characterized in that, The dust removal components include: The cleaning plate (41) is slidably disposed on the side of the inner protective cylinder (22), and the side of the cleaning plate (41) is connected to the drive assembly through the first connecting rod (7); the cleaning plate (41) is provided with an installation groove on the side that contacts the inner protective cylinder (22); Multiple brushes (42) are set in the mounting groove and are in contact with the transparent observation plate (3).

5. The tunnel monitoring camera protection device with automatic dust removal capability according to claim 4, characterized in that, The ash removal assembly includes: The telescopic exhaust pipe (43) is connected at one end to the inner bottom surface of the outer protective shell (21) and at the other end to the drive assembly; The intake pipe (44) is connected at one end to the telescopic exhaust pipe (43) and at the other end to the mounting groove; The ash discharge pipe (45) is located at the bottom of the mounting groove, and the lower end of the ash discharge pipe (45) passes through the outer protective shell (21) and is located below the outer protective shell (21).

6. The tunnel monitoring camera protection device with automatic dust removal capability according to claim 5, characterized in that, The driver components include: The dust removal driver (46) is located on the bottom surface of the outer protective shell (21), and the output end of the dust removal driver (46) is provided with a drive gear (46a). The first arc-shaped strip (47) is connected to the drive gear (46a) on one side and to the movable protective plate (23) on the other side. The end of the first arc-shaped strip (47) is connected to the telescopic exhaust pipe (43). The second arc-shaped strip (48) is located on the side of the drive gear (46a) away from the first arc-shaped strip (47). The side of the second arc-shaped strip (48) is meshed with the drive gear (46a), and the end of the second arc-shaped strip (48) is connected to the cleaning plate (41) through the first connecting rod (7).

7. The tunnel monitoring camera protection device with automatic dust removal capability according to claim 4, characterized in that, The mounting groove contains two symmetrically arranged airflow control plates (49).

8. The tunnel monitoring camera protection device with automatic dust removal capability according to claim 7, characterized in that, Each airflow control plate (49) is a corrugated plate structure, and the airflow control plate (49) is provided with multiple through holes.

9. A tunnel monitoring camera protection device with automatic dust removal capability according to claim 2, characterized in that, The inner protective casing (22) is also equipped with an adjustment mechanism (6) for adjusting the pitch angle of the monitoring camera (8). The adjustment mechanism (6) includes: The bracket (61) is disposed on the inner bottom surface of the outer protective shell (21); A horizontal plate (62) is rotatably connected to a bracket (61), and a monitoring camera (8) is mounted on the upper surface of the horizontal plate (62); The telescopic rod (63) is rotatably connected at one end to the bracket (61) and at the other end to the horizontal plate (62).

10. The tunnel monitoring camera protection device with automatic dust removal capability according to claim 1, characterized in that, The buffer base (1) includes: Mounting bracket (11) is installed on the tunnel sidewall; The buffer connecting frame (12) is connected to the mounting frame (11) at one end and has a fixed base (14) at the other end. The fixed base (14) abuts against the bottom surface of the double-layer protective mechanism (2). A cushioning pad (13) is disposed between the mounting bracket (11) and the cushioning connecting bracket (12).

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