Coal flow monitoring and control device based on scanning millimeter wave radar

Abstract

The present application belongs to the technical field of coal, especially a coal flow monitoring control device based on a scanning millimeter wave radar. The present application proposes the following scheme, which comprises a camera box and a lens. A drive column is installed in the outer wall of the camera box and is connected to a drive motor in the camera box. The drive motor drives the drive column to rotate, causing the rotating plate and the scraping strip to rotate synchronously. At the same time, the spring pushes the sliding disc and the sliding rod, ensuring that the scraping strip closely adheres to the surface of the lens for physical cleaning. The air guide frame is opened synchronously with the air outlet under the action of the transmission mechanism. The external airflow is directed towards the lens, the rotating plate, and the scraping strip, blowing away the dust cleaned away in time to avoid the residue of impurities at the end of the scraping strip. After cleaning, the guide wheel pushes the rotating plate outward, causing the scraping strip to completely separate from the lens and be in a suspended state, completely eliminating the risk of friction pollution in the non-working state and ensuring that the lens remains clear for a long time, providing a reliable foundation for the fusion analysis of radar data and visual images.

Description

Technical Field

[0001] This invention relates to the field of coal technology, and in particular to a coal flow monitoring and control device based on scanning millimeter-wave radar. Background Technology

[0002] As a core component of my country's energy structure, efficient management of coal mining, transportation, and processing is crucial for energy efficiency and production safety. Belt conveyors are key equipment for continuous coal transportation, while real-time monitoring and precise control of coal flow are essential to prevent equipment overload, coal blockage, or material shortages. With the improvement of industrial automation, traditional contact-based or single-sensor monitoring methods are no longer sufficient to meet the demands of coal transportation scenarios characterized by high dust, large flow rates, and dynamic changes. Coal flow monitoring and control devices based on scanning millimeter-wave radar are gradually being applied due to their advantages such as non-contact operation and strong anti-interference capabilities, driving the development of coal flow monitoring towards intelligence and high precision.

[0003] Existing coal flow monitoring and control devices based on scanning millimeter-wave radar mainly consist of a scanning device (scanning millimeter-wave radar scanner), a photographic capture device (industrial imaging element, such as a high-definition camera), a control host, actuators (such as belt speed-regulating motors and feeding gates), and mounting brackets. The scanning millimeter-wave radar scanner is installed above the conveyor belt and continuously scans the coal flow using high-frequency millimeter waves to acquire data such as the three-dimensional contour, cross-sectional area, and velocity of the coal flow. Simultaneously, the photographic capture device (image element) captures visual images of the coal flow, recording details such as surface morphology and uniformity of distribution. The radar scan data and camera image data are transmitted to the control host in real time. The host uses algorithms to fuse and analyze the two types of data, accurately calculating the instantaneous coal flow and cumulative flow. When the monitored flow deviates from a set threshold, the control host sends control commands to the actuators, dynamically controlling the coal flow by adjusting the belt speed or feeding rate, forming a closed-loop system from scanning to capture to analysis and finally control.

[0004] In practical applications, existing scanning millimeter-wave radar coal flow monitoring and control devices suffer from several problems. The presence of large amounts of particulate matter such as carbon ash and dust in the coal transportation environment causes the camera lens to easily attract these impurities, resulting in blurred images and affecting the accuracy of data fusion with radar, thus reducing the accuracy of flow calculation. Although some devices are equipped with electric scrapers for automatic cleaning, the high concentration of carbon ash and dust in the environment, coupled with the close contact between the scraper tip and the lens surface, leads to a significant amount of carbon ash and dust adhering to the scraper during cleaning, especially on the end face where the scraper contacts the lens. This not only causes secondary contamination of the lens during subsequent cleaning but also requires frequent manual cleaning by the user, increasing maintenance frequency and operational complexity, and severely impacting the continuous and stable operation of the device.

[0005] Therefore, a coal flow monitoring and control device based on scanning millimeter-wave radar is needed. Summary of the Invention

[0006] This invention proposes a coal flow monitoring and control device based on scanning millimeter-wave radar. This addresses the problems in existing technologies where the presence of large amounts of carbon ash, dust, and other particulate matter in the coal transportation environment causes the camera lens to easily absorb these impurities, resulting in blurred images and affecting the accuracy of fusion with radar data, thus reducing the accuracy of flow calculation. Although some devices are equipped with electric scrapers for automatic cleaning, the high concentration of carbon ash and dust in the environment, coupled with the close contact between the scraper end and the lens surface, leads to a large amount of carbon ash and dust adhering to the scraper during cleaning, especially on the end face where the scraper contacts the lens. This not only causes secondary contamination of the lens during subsequent cleaning but also requires frequent manual cleaning by the user, increasing maintenance frequency and operational complexity, and seriously affecting the continuous and stable operation of the device.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A coal flow monitoring and control device based on scanning millimeter-wave radar includes a camera box and a lens. A drive column is installed inside the outer wall of the camera box and is connected to a drive motor inside the camera box. A slide rod is slidably installed at the end of the drive column. A rotating plate is installed at the end of the slide rod, and a scraper for cleaning the lens is installed on the outer wall of the rotating plate. A reset mechanism corresponding to the slide rod is provided inside the drive column.

[0009] The outer wall of the camera box is rotatably equipped with guide wheels for guiding the rotating plate. When the rotating plate is reset, the guide wheels will push the rotating plate outward to ensure that the scraper does not stick to the lens and the outer wall of the camera box when it is not in use.

[0010] The camera box has an air guide frame installed on its side wall, and the air guide frame is connected to an external blower mechanism. The air outlet of the air guide frame corresponds to the position of the lens and the rotating plate. To blow away dust from the lens surface, the rotating plate, and the scraper, the camera box is equipped with a sealing mechanism corresponding to the air guide frame to close the air outlet of the air guide frame. The camera box is also equipped with a transmission mechanism to open the sealing mechanism, and the transmission mechanism is driven by a drive column.

[0011] Preferably, the reset mechanism includes a mounting hole in the drive column, a slide plate fixedly connected to the end of the slide rod is slidably mounted in the mounting hole, and a spring is sleeved on the slide rod that is in contact with the slide plate and the inner wall of the mounting hole.

[0012] Preferably, the slide bar has a polygonal cross-section, and the end of the slide bar is connected to the rotating plate by bolts and nuts.

[0013] Preferably, the outer end of the guide wheel protrudes from the outer wall of the camera box, and the installation position of the guide wheel is staggered from the position of the scraper.

[0014] Preferably, the sealing mechanism includes a drive shaft rotatably mounted on the outer wall of the camera box and rotatably connected to the inner wall of the air guide frame, and a protective plate for sealing the air outlet of the air guide frame is fixedly mounted on the outer wall of the drive shaft.

[0015] Preferably, multiple sets of the drive shaft are installed at equal intervals on the outer wall of the camera box, and the protective plates on the outer wall of the drive shaft are of the same shape. The bottom end face of the protective plate is attached to the top end face of one set of protective plates at its bottom, and the total length of the multiple sets of protective plates after their end faces are attached is greater than the length of the air outlet of the air guide frame.

[0016] Preferably, the transmission mechanism includes a gear fixedly mounted on the end of the transmission shaft and rotating inside the camera box, and a rack slidably mounted inside the camera box and meshing with the gear, and a transmission block is mounted on the bottom of the rack.

[0017] Preferably, the transmission mechanism includes a rocker arm rotatably mounted inside the camera housing and attached to the bottom of the transmission block, and a pressure ring fixedly mounted on the outer wall of the drive column and attached to the other end of the rocker arm. The pressure ring has a notch at its end, and when the drive column is not rotated, the position of the notch of the pressure ring corresponds to the end of the rocker arm.

[0018] Preferably, the rocker is located below the pressure ring. When the pressure ring rotates, it will press the rocker downward to ensure that the rocker pushes the transmission block upward. The upward sliding distance of the transmission block is only enough to make the rack drive gear rotate 90°.

[0019] Preferably, a connecting hole is provided through the rocker plate, and the distance between the connecting hole and the end of the rocker plate near the pressure ring is smaller than the distance between the connecting hole and the other end of the rocker plate.

[0020] This invention proposes a coal flow monitoring and control device based on scanning millimeter-wave radar. Compared with the prior art, the advantages of this invention are:

[0021] 1. This invention uses a drive motor to rotate the drive column, causing the rotating plate and scraper to rotate synchronously. Simultaneously, a spring pushes the slide plate and slide rod, ensuring the scraper is in close contact with the lens surface for physical cleaning. The air guide frame opens its outlet synchronously under the action of the transmission mechanism, directing external airflow towards the lens, rotating plate, and scraper to promptly remove the scraped dust and prevent impurities from remaining at the scraper's end. After cleaning, the guide wheel pushes the rotating plate outwards, completely separating the scraper from the lens and placing it in a suspended state. This completely eliminates the risk of frictional contamination during non-working conditions, ensuring the lens remains clear for a long time and providing a reliable foundation for the fusion analysis of radar data and visual images.

[0022] 2. This invention employs a linked sealing structure between the protective plate and the air guide frame. Before cleaning, the drive column rotates, causing the pressure ring to squeeze the rocker plate. Through rack and gear transmission, the drive shaft rotates 90°, and multiple sets of protective plates switch from a sealed state with their ends touching to a separated state. The air outlet of the air guide frame automatically opens, providing a channel for airflow cleaning. After cleaning, the pressure ring notch resets, and the rack, under gravity, drives the protective plate to rotate in the opposite direction. The protective plate then tightly seals the air outlet again, effectively preventing dust from entering and accumulating inside the air guide frame through the air outlet. This automatic switching design ensures ventilation during cleaning and provides tight protection in non-cleaning states, significantly reducing the risk of contamination of internal components and adapting to the harsh environment of coal transportation.

[0023] 3. This invention achieves transmission stability and motion precision through multiple structural optimizations, ensuring efficient and reliable cleaning. The sliding rod adopts a polygonal cross-section design, and its sliding cooperation with the drive column avoids deviation during rotation, ensuring that the scraper always adheres to the lens along the preset trajectory. The combination structure of the spring and the sliding plate automatically adjusts the adhesion force between the scraper and the lens through elastic force, ensuring thorough cleaning while avoiding excessive pressure that could cause lens wear. In the sealing and ventilation switching process, the connection hole of the rocker plate is designed to form a lever structure, and a slight squeeze of the pressure ring can drive the protective plate to rotate precisely 90°, ensuring that the air outlet is fully opened or sealed. The installation position of the guide wheel is offset from the scraper to avoid component interference, and at the same time, it stably pushes the rotating plate during reset, ensuring the consistency of the scraper and lens separation action and reducing cleaning failures caused by mechanical deviations.

[0024] 4. This invention significantly reduces maintenance requirements through an integrated and interconnected design, enabling long-term stable operation in complex environments. Compared to the cumbersome process of frequently disassembling and cleaning the scraper blades required by traditional devices, this device automatically removes dust from the lens and scraper blades through the synergistic effect of airflow and mechanical scraping, reducing the frequency of manual intervention. The transmission relationship of each component is centrally driven by the drive column, with coherent action logic, requiring no additional power source and reducing the risk of failure. The protective plate sealing design reduces dust erosion of the internal transmission mechanism, and the polygonal slide rod and bolt-connected rotating plate facilitate the replacement of local components, further extending the service life of the equipment. This low-maintenance, high-reliability design ensures that the coal flow monitoring and control device continues to operate stably in high-frequency, high-dust scenarios of coal transportation, providing accurate data support for flow regulation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a coal flow monitoring and control device based on scanning millimeter-wave radar according to the present invention.

[0026] Figure 2 This is a bottom view of the structure of a coal flow monitoring and control device based on scanning millimeter-wave radar according to the present invention.

[0027] Figure 3 This invention relates to a coal flow monitoring and control device based on scanning millimeter-wave radar. Figure 2 A magnified structural diagram of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the drive column, rotating plate, and other components of a coal flow monitoring and control device based on scanning millimeter-wave radar according to the present invention.

[0029] Figure 5 This invention relates to a coal flow monitoring and control device based on scanning millimeter-wave radar. Figure 4 A magnified structural diagram of point B in the middle;

[0030] Figure 6 This is a schematic diagram of the structure of the drive column of a coal flow monitoring and control device based on scanning millimeter-wave radar according to the present invention after being cut open.

[0031] Figure 7 This is a schematic diagram of the structure of the air guide frame cut open during operation of a coal flow monitoring and control device based on scanning millimeter-wave radar according to the present invention.

[0032] Figure 8 This is a schematic diagram of the structure of the drive column, rotating plate and other components of a coal flow monitoring and control device based on scanning millimeter-wave radar in this invention.

[0033] Figure 9This is a schematic diagram showing the structure of the drive column cut open during operation of a coal flow monitoring and control device based on scanning millimeter-wave radar according to the present invention.

[0034] Figure 10 This invention relates to a coal flow monitoring and control device based on scanning millimeter-wave radar. Figure 9 A schematic diagram of the planar structure.

[0035] In the diagram: 1. Camera box; 101. Lens; 2. Mounting bracket; 3. Drive column; 4. Mounting hole; 5. Slide plate; 6. Slide rod; 7. Rotating plate; 8. Scraper; 9. Guide wheel; 10. Spring; 11. Air guide frame; 111. Sealing plate; 12. Protective plate; 13. Drive shaft; 14. Gear; 15. Rack; 16. Transmission block; 17. Rocker; 171. Connecting hole; 18. Pressure ring; 181. Notch. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figure 1-10 The present invention provides a technical solution: a coal flow monitoring and control device based on scanning millimeter-wave radar, comprising a main body of the device composed of components such as a camera box 1, a lens 101, a mounting frame 2, a drive column 3, a rotating plate 7, and an air guide frame 11;

[0038] The camera box 1 is the main structure of the device, used to install various components; the lens 101 is mounted on the camera box 1 and used to capture coal flow images to assist in coal flow monitoring; a drive column 3 is installed inside the outer wall of the camera box 1, and the drive column 3 is connected to the drive motor inside the camera box 1, which provides rotational power; a slide rod 6 is slidably mounted at the end of the drive column 3, and a rotating plate 7 is mounted at the end of the slide rod 6; a scraper 8 is installed on the outer wall of the rotating plate 7, and the scraper 8 is used to clean the dust on the surface of the lens 101; a reset mechanism corresponding to the slide rod 6 is provided inside the drive column 3, which is used to drive the slide rod 6 and the rotating plate 7 to reset;

[0039] Secondly, a guide wheel 9 is rotatably installed on the outer wall of the camera box 1. When the rotating plate 7 is reset, the guide wheel 9 will push the rotating plate 7 outward to ensure that the scraper 8 will not stick to the lens 101 and the outer wall of the camera box 1 when it is not in use, thus avoiding frictional wear in the non-working state.

[0040] An air guide frame 11 is installed on the side wall of the camera box 1. The air guide frame 11 is connected to the external blower mechanism. Its air outlet corresponds to the position of the lens 101 and the rotating plate 7, and is used to blow off the dust on the surface of the lens 101, the rotating plate 7 and the scraper 8. The camera box 1 is provided with a sealing mechanism corresponding to the air guide frame 11, which is used to close the air outlet of the air guide frame 11. The camera box 1 is also provided with a transmission mechanism, which is driven by the drive column 3, and is used to open the sealing mechanism.

[0041] The reset mechanism in this embodiment includes a mounting hole 4, a slide 5, and a spring 10;

[0042] The mounting hole 4 is opened in the drive column 3, and the slide plate 5 is slidably installed in the mounting hole 4 and fixedly connected to the end of the slide rod 6. At the same time, the spring 10 is sleeved on the slide rod 6 and is in contact with the inner wall of the slide plate 5 and the mounting hole 4, providing the reset power for the sliding of the slide rod 6.

[0043] In this embodiment, the slide rod 6 has a polygonal cross-section to ensure that it will not slip relative to the drive column 3 when it rotates; at the same time, the end of the slide rod 6 is connected to the rotating plate 7 by bolts and nuts, which facilitates the disassembly and maintenance of the rotating plate 7.

[0044] For example, the outer end of the guide wheel 9 protrudes from the outer wall of the camera box 1, and its installation position is offset from that of the scraper 8 to avoid interference with the scraper 8 and ensure stable guiding effect on the rotating plate 7.

[0045] The sealing mechanism in this embodiment includes a drive shaft 13 and a protective plate 12;

[0046] The drive shaft 13 is rotatably mounted on the outer wall of the camera box 1 and rotatably connected to the inner wall of the air guide frame 11. The protective plate 12 is fixedly mounted on the outer wall of the drive shaft 13 to seal the air outlet of the air guide frame 11. Multiple sets of drive shaft 13 are installed at equal intervals on the outer wall of the camera box 1. The protective plates 12 on the outer wall of the drive shaft 13 are the same shape. The bottom end face of the protective plate 12 is attached to the top end face of one set of protective plates 12 at its bottom. The total length of the multiple sets of protective plates 12 after their end faces are attached is greater than the length of the air outlet of the air guide frame 11 to ensure the sealing effect.

[0047] The transmission mechanism in this embodiment includes a gear 14, a rack 15, a transmission block 16, a rocker 17, and a pressure ring 18;

[0048] Among them, gear 14 is fixedly installed at the end of transmission shaft 13 and rotates inside camera box 1; rack 15 is slidably installed inside camera box 1 and meshes with gear 14; transmission block 16 is installed at the bottom of rack 15; rocker plate 17 is rotatably installed inside camera box 1 and is attached to the bottom of transmission block 16; pressure ring 18 is fixedly installed on the outer wall of drive column 3 and is attached to the other end of rocker plate 17; pressure ring 18 has a notch 181 at the end; when drive column 3 is not rotating, the position of notch 181 of pressure ring 18 corresponds to the end of rocker plate 17, and no pressure is applied to rocker plate 17 at this time.

[0049] Secondly, the rocker plate 17 is located below the pressure ring 18. When the pressure ring 18 rotates, it will press the rocker plate 17 downward, causing the rocker plate 17 to push the transmission block 16 upward. The upward sliding distance of the transmission block 16 is only enough to make the rack 15 drive the gear 14 to rotate 90°, ensuring that the protective plate 12 opens accurately. A connecting hole 171 is provided through the rocker plate 17. The distance between the connecting hole 171 and the end of the rocker plate 17 near the pressure ring 18 is smaller than the distance between the connecting hole and the other end, which enhances the transmission effect by using the lever principle.

[0050] It should be noted that before the device is installed and used, a sealing plate 111 for closing the air inlet end of the air guide frame 11 can be detachably installed to prevent debris from entering the interior of the air guide frame 11 through the air inlet end when it is not installed.

[0051] Through the coordinated operation of the above components, when cleaning the lens 101, the drive motor drives the drive column 3 to rotate, the pressure ring 18 squeezes the rocker plate 17, and the transmission mechanism causes the protective plate 12 to rotate and open the air outlet of the air guide frame 11, and the external blower blows air; at the same time, the rotating plate 7 rotates with the drive column 3, and under the action of the spring 10, the scraper 8 is made to stick to the lens 101 for cleaning, and the airflow blows off the dust simultaneously; after cleaning is completed, the drive column 3 resets, the guide wheel 9 pushes the rotating plate 7 away from the lens 101, and the protective plate 12 closes the air outlet of the air guide frame 11, realizing automatic cleaning and protection, which is suitable for coal transportation scenarios with high dust.

[0052] When the lens 101 needs to be cleaned, firstly, the external blower mechanism is started 1 to 3 minutes in advance to introduce airflow into the air guide frame 11. Then, the drive motor in the camera box 1 is started, which drives the drive column 3 to rotate. The pressure ring 18 on the outer wall of the drive column 3 rotates synchronously, and its end gradually moves away from the initial corresponding notch 181 position, and begins to squeeze the end of the rocker plate 17 close to the pressure ring 18.

[0053] Since the rocker arm 17 is rotatably installed through the connecting hole 171, and the distance between the connecting hole 171 and the end of the pressure ring 18 is less than the distance to the other end, according to the lever principle, the end of the rocker arm 17 away from the pressure ring 18 tilts upward, pushing the transmission block 16 to slide upward; the transmission block 16 drives the rack 15 to rise synchronously, the rack 15 meshes with the gear 14, driving the transmission shaft 13 to rotate 90°, and the protective plate 12 on the outer wall of the transmission shaft 13 rotates accordingly. Since the ends of the multiple sets of protective plates 12 were originally attached to seal the air outlet of the air guide frame 11, they are separated after rotation, and the air outlet of the air guide frame 11 is fully opened, preparing for subsequent air blowing and cleaning;

[0054] As the drive column 3 continues to rotate, it drives the rotating plate 7 to rotate synchronously. In the initial state, the rotating plate 7 is in contact with the outer end of the guide wheel 9 protruding from the outer wall of the camera box 1, and the guide wheel 9 forms an outward supporting force on the rotating plate 7. As the rotating plate 7 rotates and gradually separates from the guide wheel 9, this supporting force disappears.

[0055] At this time, the spring 10 in the mounting hole 4 pushes the slide plate 5, causing the slide plate 5 to drive the slide rod 6 to slide towards the outer wall of the camera box 1. The rotating plate 7 then approaches the lens 101, and finally the scraper 8 on the outer wall of the rotating plate 7 is in close contact with the surface of the lens 101.

[0056] Simultaneously, the air outlet of the air guide frame 11 is opened, and the airflow provided by the external blower mechanism blows towards the lens 101, the rotating plate 7 and the scraper 8 through the air outlet; the airflow can not only blow off the floating dust on the surface of the lens 101, but also blow away the scraped dust in time when the scraper 8 cleans the lens 101, avoiding secondary adhesion and significantly improving the cleaning effect.

[0057] After cleaning, the drive motor drives the drive column 3 to reset, and the rotating plate 7 rotates synchronously with the slide rod 6, gradually coming into contact with the outer wall of the guide wheel 9 again. As the rotating plate 7 continues to rotate, the guide wheel 9 applies an outward pushing force to the rotating plate 7, forcing the rotating plate 7 to slide the slide rod 6 outward. The slide plate 5 compresses the spring 10, at which point the spring 10 stores energy. When the rotating plate 7 resets, it will contact the guide wheel 9. As the rotating plate 7 continues to reset, it begins to pull the slide rod 6 outward, thus causing the rotating plate 7 to pull the slide plate 5 through the slide rod 6. Since the slide plate 5 is in contact with the spring 10, the rotating plate 7 will compress the spring 10 when it moves outward. When the rotating plate 7 needs to rotate, the spring 10 will pull the slide rod 6 into the mounting hole 4 through the slide plate 5, thereby ensuring that the rotating plate 7 will move towards the inner wall of the camera box 1. When the rotating plate 7 resets, it will contact the guide wheel 9. As the rotating plate 7 continues to reset, it will start to pull the slide rod 6 outward, thereby causing the rotating plate 7 to pull the slide plate 5 through the slide rod 6. The slide plate 5 is in contact with the spring 10, so that when the rotating plate 7 moves outward, it will squeeze the spring 10, ensuring that when the rotating plate 7 needs to rotate, the spring 10 will pull the slide rod 6 into the mounting hole 4 through the slide plate 5, thereby ensuring that the rotating plate 7 will move towards the inner wall of the camera box 1.

[0058] During this process, the distance between the rotating plate 7 and the outer wall of the camera box 1 gradually increases, and the scraper 8 separates from the surface of the lens 101. Finally, when the drive motor stops rotating, the rotating plate 7 remains stable under the support of the guide wheel 9, and the scraper 8 is in a suspended state, neither contacting the lens 101 nor adhering to the outer wall of the camera box 1, thus avoiding frictional wear in the non-working state.

[0059] When the drive column 3 is reset, the notch 181 of the pressure ring 18 aligns with the end of the rocker plate 17 again, and no longer presses the rocker plate 17.

[0060] At this time, the external blower mechanism does not turn off immediately, but stops working after a delay of 1 to 3 minutes. During this period, it continues to blow air onto the lens 101 and the scraper 8 to ensure that the residual dust is completely removed, and finally completes the entire cleaning process.

[0061] After the external blower mechanism is closed, the protective plate 12 is no longer restricted by the gas blowing. At this time, the rack 15 slides down under its own weight, and drives the transmission shaft 13 to rotate 90° in the opposite direction through the gear 14. At the same time, the protective plate 12 will also rotate under its own weight. With the movement of the rack 15, the ends of the protective plate 12 are put together again, sealing the air outlet of the air guide frame 11.

[0062] This device, through the synergy of mechanical transmission and airflow assistance, not only solves the problem of easy contamination of lens 101 in high dust environments, but also reduces component wear through precise reset design, making it suitable for the maintenance of coal flow monitoring equipment in high dust scenarios such as coal transportation.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal flow monitoring control device based on a scanning millimeter wave radar, characterized by, The utility model provides a camera box and lens, the camera box (1) outer wall installs drive column (3) in, and drive column (3) is connected with the drive motor in camera box (1), and drive column (3) end slidingly installs slide bar (6), slide bar (6) end installs rotating plate (7), and rotating plate (7) outer wall installs the scraping strip (8) for cleaning lens (101), drive column (3) is equipped with the reset mechanism corresponding with slide bar (6) in, The camera box (1) outer wall rotatably installs the guide wheel (9) for guiding rotating plate (7), when rotating plate (7) resets, guide wheel (9) will push rotating plate (7) outward, for guaranteeing that scraping strip (8) does not use when will not be attached with lens (101) and camera box (1) outer wall, The camera box (1) side wall is installed with the air guide frame (11), and the air guide frame (11) is connected with the external blowing mechanism, and the air outlet of the air guide frame (11) corresponds with the position of lens (101) and rotating plate (7), for blowing off the dust on the surface of lens (101), rotating plate (7) and scraping strip (8), the camera box (1) is equipped with the sealing mechanism corresponding with the air guide frame (11), for closing the air outlet of the air guide frame (11), and the camera box (1) is also equipped with transmission mechanism, for opening the sealing mechanism, and transmission mechanism is driven by drive column (3), The sealing mechanism includes transmission shaft (13) rotatably installed on the outer wall of the camera box (1) and rotatably connected with the inner wall of the air guide frame (11), and the protective plate (12) for sealing the air outlet of the air guide frame (11) is fixedly installed on the outer wall of the transmission shaft (13); a plurality of sets of transmission shafts (13) are installed at equal intervals on the outer wall of the camera box (1), and the protective plates (12) on the outer wall of the transmission shafts (13) are of the same shape, and the bottom end face of the protective plate (12) is attached to the top end face of the protective plate (12) at the bottom, and the total length of the end faces of the plurality of sets of protective plates (12) after being attached is greater than the length of the air outlet of the air guide frame (11); The transmission mechanism includes a gear (14) fixedly installed at the end of the transmission shaft (13) and rotatable in the camera box (1), and a rack (15) slidably installed in the camera box (1) and meshingly connected with the gear (14), and a transmission block (16) is installed at the bottom of the rack (15); The transmission mechanism includes a rocker plate (17) rotatably installed in the camera box (1) and attached to the bottom of the transmission block (16), and a compression ring (18) fixedly installed on the outer wall of the drive column (3) and attached to the other end of the rocker plate (17), and an opening (181) is formed at the end of the compression ring (18), and when the drive column (3) is not rotating, the opening (181) of the compression ring (18) corresponds to the end of the rocker plate (17).

2. The coal flow monitoring control device based on a scanning millimeter wave radar according to claim 1, characterized in that: The reset mechanism includes a mounting hole (4) formed in the drive column (3), and a sliding disc (5) fixedly connected with the end of the slide bar (6) is slidably installed in the mounting hole (4), and a spring (10) is sleeved on the slide bar (6) and attached to the inner wall of the sliding disc (5) and the mounting hole (4).

3. The coal flow monitoring control device based on a scanning millimeter wave radar according to claim 1, characterized in that: The slide rod (6) is polygonal in cross section, and the end of the slide rod (6) is connected with the rotating plate (7) through bolts and nuts.

4. The coal flow monitoring control device based on a scanning millimeter wave radar according to claim 1, characterized by: The outer end of the guide wheel (9) protrudes out of the outer wall of the camera box (1), and the installation position of the guide wheel (9) is staggered with the position of the scraping strip (8).

5. The coal flow monitoring control device based on a scanning millimeter wave radar according to claim 1, characterized by: The rocker (17) is located below the pressing ring (18), when the pressing ring (18) rotates, it will extrude the rocker (17) downward, so as to ensure that the rocker (17) pushes the transmission block (16) upward, and the sliding distance of the transmission block (16) upward can only make the rack (15) drive the gear (14) to rotate 90°.

6. The coal flow monitoring control device based on a scanning millimeter wave radar according to claim 1, characterized by: The connecting hole (171) is provided through the rocker (17), and the distance between the connecting hole (171) and one end of the rocker (17) close to the pressing ring (18) is smaller than the distance between the connecting hole (171) and the other end of the rocker (17).

Images