Remote monitoring equipment for comprehensive safety management of smart construction sites based on BIM model

Abstract

The present invention relates to the technical field of monitoring equipment, specifically to a remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model, comprising a bracket; a device box with an opening at the bottom end is fixedly mounted on the bracket, a mounting plate is movably provided inside the device box, a camera is fixedly mounted on the bottom wall of the mounting plate, a motor is fixedly mounted on the inner top wall of the device box, and a threaded rod is vertically fixedly mounted on the output end of the motor. In the process of the threaded rod rotating, the present invention drives the mounting plate to move upward under the action of a first guide rod, so that the mounting plate drives the camera into the device box. Since the device box has only an opening at the bottom end, the air in the device box will not circulate, and thus the gas will not flow into the device box. Therefore, when the camera enters therein, it can be prevented from being scratched by splashing gravel.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring equipment, and in particular to a remote monitoring equipment for comprehensive safety management of smart construction sites based on a BIM model. Background Art

[0002] The monitoring system is an important part of the smart construction site. It can directly view all the situations at the theft site through remote control of cameras and auxiliary equipment, lenses, pan / tilts, etc. It can transmit the image content of the monitored site to the monitoring center, making the situation of the monitored site clear at a glance, and has the function of image recording and storage. In order to accurately control the specific location of the monitoring camera to achieve monitoring without blind spots, the commonly used method is to use BIM to create a 3D model of the building for stereoscopic observation to achieve accurate control of the monitoring camera.

[0003] In windy weather, work on the construction site will stop, but the monitoring system is still exposed outdoors; because there will be a lot of dust on the ground of the construction site, the strong wind will blow up the dust in windy weather. When the sand and gravel flying in the air come into contact with the monitoring lens or protective cover, it will be scratched by friction, resulting in unclear monitoring images and poor monitoring.

[0004] Therefore, a remote monitoring device for comprehensive safety management of smart construction sites based on BIM model is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model, so as to solve the problem mentioned in the above background technology that construction on the construction site is stopped during strong winds, and the strong wind blows up the gravel on the ground, causing the lens of the monitoring equipment to be scratched.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model, comprising a bracket; a device box with an opening at the bottom end is fixedly mounted on the bracket, a mounting plate is movably provided in the device box, a camera is fixedly mounted on the bottom wall of the mounting plate, a motor is fixedly mounted on the inner top wall of the device box, a threaded rod is vertically fixedly mounted on the output end of the motor, a screw hole matching the threaded rod is opened on the mounting plate, a first guide rod penetrating the mounting plate is fixedly mounted on the inner wall of the device box, and a trigger mechanism for triggering the motor is provided on the device box.

[0008] In windy weather, the motor rotates under the action of the trigger mechanism. Since the mounting plate is provided with a screw hole that cooperates with the threaded rod, the mounting plate will be driven upward by the first guide rod during the rotation of the threaded rod, so that the mounting plate drives the camera into the device box. Since the device box has only an opening at the bottom, the air in the device box will not circulate, and the gas will not flow into the device box. Therefore, when the camera enters it, it can be prevented from being scratched by flying sand and gravel.

[0009] Preferably, the trigger mechanism includes a mounting rod vertically movably inserted on the top wall of the device box, a first spring is sleeved on the mounting rod, and a second pressure plate with an arc-shaped bottom surface is provided at the top end of the mounting rod, a partition is fixedly installed in the device box, and a first switch connected in series with the motor is fixedly installed on the top wall of the partition.

[0010] In the initial state, under the action of the first spring, the second pressure plate drives the mounting rod to extend out of the box body; since the bottom wall of the second pressure plate is an arc surface, the surface area of ​​the bottom wall of the second pressure plate is larger than the area of ​​the top wall. Therefore, when the airflow passes through the second pressure plate, the air flow rate at its bottom is large, which will cause the pressure on its bottom wall to be small. Therefore, the second pressure plate will move downward and drive the mounting rod to move downward. During the downward movement, it will first contact the first switch and squeeze the first switch, thereby energizing the circuit where the motor is located, thereby triggering the motor to work.

[0011] Preferably, a sleeve plate is fixedly mounted on the side wall of the device box, a baffle plate is fixedly mounted inside the sleeve plate, and a driving mechanism for driving the baffle plate to extend out of the sleeve plate is provided inside the device box.

[0012] Under the action of the driving mechanism, the baffle extends from the sleeve plate, so that the baffle completely blocks the bottom end of the device box, thereby completely isolating the external air and preventing flying sand and gravel from entering the device box under the action of inertia, thereby further improving the protection of the camera.

[0013] Preferably, the driving mechanism includes a sleeve installed on the bottom wall of the partition, a piston plate is movably provided in the sleeve, a push rod is vertically fixedly installed on the bottom wall of the piston plate, a conduit connected to the sleeve plate is fixedly installed on the side wall of the sleeve, and a reset mechanism for driving the mounting plate and the baffle to reset is provided in the device box.

[0014] In the initial state, the piston plate is located at the bottom end of the sleeve under the action of gravity, so the push rod is completely extended out of the sleeve. During the upward movement of the mounting plate, the mounting plate contacts the push rod and pushes the piston plate upward. When the piston plate moves upward along the sleeve, the pressure in the sleeve increases. Therefore, under the action of the conduit, the gas in the sleeve will enter the sleeve plate, thereby increasing the pressure in the sleeve plate. Since the pressure in the sleeve plate is greater than the external pressure, the baffle plate will move outward along the sleeve plate, thereby driving the baffle plate to extend out of the sleeve plate during the entire process.

[0015] Preferably, the reset mechanism includes a second spring fixedly mounted between the piston plate and the top wall of the sleeve, a fixing plate is horizontally fixedly mounted on the inner wall of the device box, a third spring is fixedly mounted on the bottom wall of the fixing plate, the third spring is sleeved on the threaded rod, and the surface of the threaded rod where the third spring is fully compressed is smooth.

[0016] Since the second spring is installed between the piston plate and the sleeve, the second spring is squeezed when the piston plate moves upward along the sleeve, and when the motor drives the threaded rod to rotate, the mounting plate moves upward and squeezes the third spring. When the mounting plate moves to a part with a smooth surface, the motor continues to rotate but the mounting plate stops moving upward, and the third spring is in a fully compressed state.

[0017] When the motor is powered off after the strong wind stops and the mounting plate no longer applies pressure to the piston plate, the second spring will stretch. During the stretching process of the second spring, the piston plate will be pushed downward along the sleeve. At this time, the pressure in the sleeve becomes negative pressure. Therefore, under the action of the conduit, the sleeve plate is also in a negative pressure state. At this time, the external pressure is greater than the pressure in the sleeve plate, so the baffle plate retracts into the sleeve plate, thereby driving the baffle plate to retract and the camera to extend from the device box;

[0018] And after the motor is powered off, the third spring is no longer subjected to the extrusion force, so in the process of the third spring extending, it plays a role of assisting the second spring in pushing the mounting plate downward.

[0019] Preferably, a rotating rod is vertically rotatably mounted on the top wall of the second pressing plate, wind cups are evenly fixedly mounted on the rotating rod, and a brush in contact with the surface of the second pressing plate is fixedly mounted on the rotating rod.

[0020] There is a lot of dust on the construction site, so in windy weather the dust will float around, and when the dust falls onto the surface of the second pressure plate, it will cause the second pressure plate to move downward. At this time, if the wind force is small, the motor can also be triggered.

[0021] Therefore, when there is a breeze, the wind cup can drive the mounting rod to rotate, so that the mounting rod can drive the brush to make a circular motion on the surface of the second pressure plate to scrape off the dust on the surface of the second pressure plate, so that the surface of the second pressure plate remains clean, thereby preventing the motor from being accidentally touched.

[0022] Preferably, a first cavity is opened on the second pressure plate, a bearing is fixedly installed in the first cavity, the mounting rod is fixedly connected to the inner ring of the bearing, and wind plates are vertically fixedly installed on the bottom walls on both sides of the second pressure plate.

[0023] Since the wind direction is uncertain, the mounting rod is fixedly mounted on the inner ring of the bearing, and the bearing is mounted in the second pressing plate, so that the second pressing plate can rotate freely with the mounting rod as the center.

[0024] Since the wind plates are installed on both sides of the bottom wall of the second pressure plate, when wind blows, the end of the wind plate that produces greater resistance to air flow will rotate along the wind, thereby driving the second pressure plate to rotate, so that the airflow can always blow towards the edge of the arc surface, ensuring that the second pressure plate can move down normally.

[0025] Preferably, the mounting rod and the rotating rod are respectively provided with a second cavity and a third cavity connected to the first cavity, and the second cavity is connected to the device box, a heating rod and a mounting sleeve are fixedly installed on the inner top wall of the device box, a second switch electrically connected to the heating rod is fixedly installed in the mounting sleeve, and a push plate cooperating with the second switch is movably provided in the mounting sleeve, a memory alloy is fixedly installed between the top wall of the mounting sleeve and the push plate, and a heat conductive sheet extending into the mounting sleeve is fixedly installed on the top wall of the device box.

[0026] In the cold winter, the temperature inside the installation sleeve is low due to the action of the heat conductive sheet. Since the memory alloy will shrink at low temperatures, the memory alloy will drive the push plate to move along the installation sleeve when it shrinks. During the movement, the push plate will squeeze the second switch to make the heating rod work. Since the first cavity, the second cavity, and the third cavity are all connected, when the heating rod heats the air in the device box, the heat will be dissipated to the three cavities. Therefore, in winter, the connection between the installation rod and the device box and the connection between the rotating rod and the second pressure plate can be kept warm, thereby preventing snow water from freezing at the connection between the rotating rod and the second pressure plate, preventing the rotating rod from being unable to rotate and preventing the installation rod from being unable to move up and down.

[0027] Preferably, a battery electrically connected to the motor and the heating rod respectively is fixedly mounted on the top wall of the sleeve plate, and a solar panel connected in series with the battery is fixedly mounted between the sleeve plate and the device box.

[0028] Since solar panels generate electricity under the action of sunlight, and the solar panels are connected in series with batteries, the electricity generated by the solar panels will be transferred to the batteries to charge them, thereby reducing the amount of electricity required to charge them from an external power source and playing a role in saving resources.

[0029] Preferably, the surface of the first spring is coated with epoxy zinc-rich primer.

[0030] Since the entire device is installed outdoors, the surface of the first spring is often in a wet state. Applying epoxy zinc-rich primer on its surface can prevent it from directly contacting the air, thereby reducing the probability of rust.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. During the rotation of the threaded rod, the mounting plate will be driven upward by the action of the first guide rod, so that the mounting plate drives the camera into the device box. Since the device box is only open at the bottom, the air in the device box will not circulate, and the gas will not flow into the device box. Therefore, when the camera enters it, it can be prevented from being scratched by flying sand and gravel.

[0033] 2. The baffle completely blocks the bottom of the device box, thereby completely isolating the external air and preventing flying sand and gravel from entering the device box under the action of inertia, thereby further improving the protection of the camera.

[0034] 3. Since solar panels generate electricity under the action of light, and the solar panels are connected in series with the battery, the electricity generated by the solar panels will be transferred to the battery to charge it, thereby reducing the amount of electricity required to charge it from an external power source and saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is an enlarged view of A of the present invention;

[0037] Figure 3 is a cross-sectional view of a device box of the present invention;

[0038] Figure 4 It is an enlarged view of B of the present invention;

[0039] Figure 5 is a cross-sectional view of the sleeve of the present invention;

[0040] Figure 6 It is a combined diagram of the sleeve plate and the baffle plate of the present invention.

[0041] In the figure: 1, bracket; 2, device box; 3, mounting plate; 4, camera; 5, motor; 6, threaded rod; 7, first guide rod; 8, mounting rod; 9, first spring; 10, second pressure plate; 11, partition; 12, first switch; 13, sleeve plate; 14, baffle; 15, piston plate; 16, push rod; 17, guide tube; 18, second spring; 19, third spring; 20, rotating rod; 21, wind cup; 22, brush; 23, bearing; 24, wind plate; 25, heating rod; 26, mounting sleeve; 27, second switch; 28, push plate; 29, memory alloy; 30, heat conductive sheet; 31, battery; 32, solar panel; 33, sleeve; 34, fixing plate. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] See also Figures 1 to 6The present invention provides a remote monitoring device for comprehensive safety management of smart construction sites based on the BIM model, and the technical solution is as follows.

[0046] A remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model comprises a bracket 1; a device box 2 with an opening at the bottom is fixedly mounted on the bracket 1, a mounting plate 3 is movably provided in the device box 2, a camera 4 is fixedly mounted on the bottom wall of the mounting plate 3, a motor 5 is fixedly mounted on the inner top wall of the device box 2, a threaded rod 6 is vertically fixedly mounted on the output end of the motor 5, a screw hole matching the threaded rod 6 is opened on the mounting plate 3, a first guide rod 7 penetrating the mounting plate 3 is fixedly mounted on the inner wall of the device box 2, and a trigger mechanism for triggering the motor 5 is provided on the device box 2.

[0047] In windy weather, the motor 5 rotates under the action of the trigger mechanism. Since the mounting plate 3 is provided with a screw hole that cooperates with the threaded rod 6, the mounting plate 3 will be driven to move upward under the action of the first guide rod 7 during the rotation of the threaded rod 6, so that the mounting plate 3 drives the camera 4 into the device box 2. Since the device box 2 has only an opening at the bottom end, the air in the device box 2 will not circulate, and the gas will not flow into the device box 2. Therefore, when the camera 4 enters therein, it plays a role in preventing it from being scratched by flying sand and gravel.

[0048] As an embodiment of the present invention, refer to Figure 1 , Figure 2 , Figure 3 The trigger mechanism includes a mounting rod 8 vertically and movably inserted on the top wall of the device box 2, a first spring 9 is sleeved on the mounting rod 8, and a second pressure plate 10 with an arc-shaped bottom surface is provided on the top of the mounting rod 8. A partition 11 is fixedly installed in the device box 2, and a first switch 12 connected in series with the motor 5 is fixedly installed on the top wall of the partition 11.

[0049] In the initial state, under the action of the first spring 9, the second pressure plate 10 drives the mounting rod 8 to extend out of the box body; since the bottom wall of the second pressure plate 10 is an arc surface, the surface area of ​​the bottom wall of the second pressure plate 10 is larger than the top wall area. Therefore, when the airflow passes through the second pressure plate 10, the air flow rate at its bottom is large, which will cause the pressure on its bottom wall to be small. Therefore, the second pressure plate 10 will move downward and drive the mounting rod 8 to move downward. During the downward movement, it will first contact the first switch 12 and squeeze the first switch 12, so that the circuit where the motor 5 is located is energized, thereby triggering the motor 5 to work.

[0050] As an embodiment of the present invention, refer to Figure 3 and Figure 6 A sleeve plate 13 is fixedly mounted on the side wall of the device box 2 , a baffle plate 14 is fixedly mounted inside the sleeve plate 13 , and a driving mechanism for driving the baffle plate 14 to extend out of the sleeve plate 13 is provided inside the device box 2 .

[0051] Under the action of the driving mechanism, the baffle 14 extends out from the sleeve 13, so that the baffle 14 completely blocks the bottom end of the device box 2, thereby completely isolating the external air and preventing the flying sand and gravel from entering the device box 2 under the action of inertia, thereby further improving the protection of the camera 4.

[0052] As an embodiment of the present invention, refer to Figure 3 and Figure 5 The driving mechanism includes a sleeve 33 installed on the bottom wall of the partition 11, a piston plate 15 is movably provided in the sleeve 33, a push rod 16 is vertically fixedly installed on the bottom wall of the piston plate 15, a conduit 17 connected to the sleeve plate 13 is fixedly installed on the side wall of the sleeve 33, and a reset mechanism for driving the mounting plate 3 and the baffle 14 to reset is provided in the device box 2.

[0053] In the initial state, the piston plate 15 is located at the bottom end of the sleeve 33 under the action of gravity, so the push rod 16 is completely extended out of the sleeve 33. During the upward movement of the mounting plate 3, the mounting plate 3 contacts the push rod 16 and pushes the piston plate 15 upward. When the piston plate 15 moves upward along the sleeve 33, the pressure in the sleeve 33 increases. Therefore, under the action of the soft conduit 17, the gas in the sleeve 33 will enter the sleeve plate 13, so the pressure in the sleeve plate 13 increases. Since the pressure in the sleeve plate 13 is greater than the external pressure, the baffle 14 will move outward along the sleeve plate 13, and play a role in driving the baffle 14 to extend from the sleeve plate 13 in the whole process.

[0054] As an embodiment of the present invention, refer to Figure 3 and Figure 5 The reset mechanism includes a second spring 18 fixedly mounted between the piston plate 15 and the top wall of the sleeve 33, a fixing plate 34 is horizontally fixedly mounted on the inner wall of the device box 2, a third spring 19 is fixedly mounted on the bottom wall of the fixing plate 34, the third spring 19 is sleeved on the threaded rod 6, and the surface of the threaded rod 6 where the third spring 19 is fully compressed is smooth.

[0055] Since the second spring 18 is installed between the piston plate 15 and the sleeve 33, the second spring 18 is squeezed when the piston plate 15 moves upward along the sleeve 33, and when the motor 5 drives the threaded rod 6 to rotate, the mounting plate 3 moves upward and squeezes the third spring 19. When the mounting plate 3 moves to a part with a smooth surface, the motor 5 continues to rotate but the mounting plate 3 stops moving upward, and the third spring 19 is in a fully compressed state.

[0056] When the motor 5 is powered off after the strong wind stops, causing the mounting plate 3 to no longer apply pressure to the piston plate 15, the second spring 18 will stretch. During the stretching process of the second spring 18, the piston plate 15 will be pushed to move downward along the sleeve 33. At this time, the pressure in the sleeve 33 becomes negative pressure. Therefore, under the action of the conduit 17, the sleeve plate 13 is also in a negative pressure state. At this time, the external pressure is greater than the pressure in the sleeve plate 13, so the baffle 14 retracts into the sleeve plate 13, thereby driving the baffle 14 to retract and the camera 4 to extend from the device box 2;

[0057] Furthermore, after the motor 5 is powered off, the third spring 19 is no longer subjected to the extrusion force, so during the extension process of the third spring 19 , it assists the second spring 18 in pushing the mounting plate 3 downward.

[0058] As an embodiment of the present invention, refer to Figure 1 and Figure 2 A rotating rod 20 is vertically rotatably mounted on the top wall of the second pressing plate 10 , a wind cup 21 is evenly fixedly mounted on the rotating rod 20 , and a brush 22 that fits the surface of the second pressing plate 10 is fixedly mounted on the rotating rod 20 .

[0059] Therefore, when there is a breeze, the wind cup 21 can drive the mounting rod 8 to rotate, and the mounting rod 8 can drive the brush 22 to make a circular motion on the surface of the second pressure plate 10, so as to scrape off the dust and debris on the surface of the second pressure plate 10, so that the surface of the second pressure plate 10 remains clean, thereby preventing the motor 5 from being accidentally touched.

[0060] As an embodiment of the present invention, refer to Figure 1 and Figure 3 A first cavity is opened on the second pressing plate 10 , a bearing 23 is fixedly installed in the first cavity, the mounting rod 8 is fixedly connected to the inner ring of the bearing 23 , and wind plates 24 are vertically fixedly installed on the bottom walls on both sides of the second pressing plate 10 .

[0061] Since the wind direction is uncertain, the mounting rod 8 is fixedly mounted on the inner ring of the bearing 23 and the bearing 23 is mounted in the second pressing plate 10 , so that the second pressing plate 10 can rotate freely with the mounting rod 8 as the center.

[0062] Since the wind plates 24 are installed on both sides of the bottom wall of the second pressure plate 10, when wind blows, the end of the wind plate 24 that produces greater resistance to air flow will rotate along the wind, thereby driving the second pressure plate 10 to rotate, so that the airflow can always blow toward the edge of the arc surface, thereby ensuring that the second pressure plate 10 can move down normally.

[0063] As an embodiment of the present invention, refer to Figure 3 and Figure 4A second cavity and a third cavity connected to the first cavity are respectively provided on the mounting rod 8 and the rotating rod 20, and the second cavity is connected to the device box 2. A heating rod 25 and a mounting sleeve 26 are fixedly installed on the inner top wall of the device box 2. A second switch 27 electrically connected to the heating rod 25 is fixedly installed in the mounting sleeve 26, and a push plate 28 cooperating with the second switch 27 is movably provided in the mounting sleeve 26. A memory alloy 29 is fixedly installed between the top wall of the mounting sleeve 26 and the push plate 28. A heat conductive sheet 30 extending into the mounting sleeve 26 is fixedly installed on the top wall of the device box 2.

[0064] In the cold winter, the temperature inside the mounting sleeve 26 is low under the action of the heat conductive sheet 30. Since the memory alloy 29 will shrink at low temperatures, the memory alloy 29 will drive the push plate 28 to move along the mounting sleeve 26 when it shrinks. During the movement, the push plate 28 will squeeze the second switch 27, thereby making the heating rod 25 work. Since the first cavity, the second cavity, and the third cavity are all connected, when the heating rod 25 heats the air in the device box 2, the heat will be dissipated to the three cavities. Therefore, in winter, the connection between the mounting rod 8 and the device box 2 and the connection between the rotating rod 20 and the second pressure plate 10 can be kept warm, thereby preventing snow water from freezing at the connection between the rotating rod 20 and the second pressure plate 10, thereby preventing the rotating rod 20 from being unable to rotate and preventing the mounting rod 8 from being unable to move up and down.

[0065] As an embodiment of the present invention, refer to Figure 1 A battery 31 electrically connected to the motor 5 and the heating rod 25 is fixedly mounted on the top wall of the cover plate 13 , and a solar panel 32 connected in series with the battery 31 is fixedly mounted between the cover plate 13 and the device box 2 .

[0066] Since the solar panel 32 generates electricity under the action of light, and the solar panel 32 is connected in series with the battery 31, the electricity generated by the solar panel 32 will be transferred to the battery 31 to charge it, thereby reducing the amount of electricity required by the external power supply to charge it, thereby saving resources.

[0067] As an embodiment of the present invention, refer to Figure 1 The surface of the first spring 9 is coated with epoxy zinc-rich primer.

[0068] Since the entire device is installed outdoors, the surface of the first spring 9 is often in a wet state. Applying epoxy zinc-rich primer on the surface can prevent it from directly contacting the air, thereby reducing the probability of rusting.

[0069] Working principle: in the initial state, under the action of the first spring 9, the second pressure plate 10 drives the mounting rod 8 to extend out of the box; since the bottom wall of the second pressure plate 10 is an arc surface, the surface area of ​​the bottom wall of the second pressure plate 10 is larger than the top wall area. Therefore, when the airflow passes through the second pressure plate 10, the air flow rate at its bottom is large, which will cause the pressure on its bottom wall to be small. Therefore, the second pressure plate 10 will move downward and drive the mounting rod 8 to move downward. During the downward movement, it will first contact the first switch 12 and squeeze the first switch 12, so that the circuit where the motor 5 is located is energized, thereby triggering the motor 5 to work.

[0070] In windy weather, the motor 5 rotates under the action of the mounting rod 8. Since the mounting plate 3 is provided with a screw hole that cooperates with the threaded rod 6, the threaded rod 6 will drive the mounting plate 3 to move upward under the action of the first guide rod 7 during the rotation of the threaded rod 6, so that the mounting plate 3 drives the camera 4 into the device box 2. Since the device box 2 has only an opening at the bottom end, the air in the device box 2 will not circulate, and the gas will not flow into the device box 2. Therefore, when the camera 4 enters therein, it plays a role in preventing it from being scratched by flying sand and gravel.

[0071] In the initial state, the piston plate 15 is located at the bottom end of the sleeve 33 under the action of gravity, so the push rod 16 completely extends out of the sleeve 33. During the upward movement of the mounting plate 3, the mounting plate 3 contacts the push rod 16 and pushes the piston plate 15 upward. When the piston plate 15 moves upward along the sleeve 33, the pressure in the sleeve 33 increases. Therefore, under the action of the conduit 17, the gas in the sleeve 33 will enter the sleeve plate 13, so the pressure in the sleeve plate 13 increases. Since the pressure in the sleeve plate 13 is greater than the external pressure, the baffle 14 will move outward along the sleeve plate 13, and in the whole process, it plays a role in driving the baffle 14 to extend out of the sleeve plate 13.

[0072] Under the action of the sleeve 33, the baffle 14 extends out from the sleeve plate 13, so that the baffle 14 completely blocks the bottom end of the device box 2, thereby completely isolating the external air and preventing the flying sand and gravel from entering the device box 2 under the action of inertia, thereby further improving the protection of the camera 4.

[0073] Since the second spring 18 is installed between the piston plate 15 and the sleeve 33, the second spring 18 is squeezed when the piston plate 15 moves upward along the sleeve 33, and when the motor 5 drives the threaded rod 6 to rotate, the mounting plate 3 moves upward and squeezes the third spring 19. When the mounting plate 3 moves to a part with a smooth surface, the motor 5 continues to rotate but the mounting plate 3 stops moving upward, and the third spring 19 is in a fully compressed state.

[0074] When the motor 5 is powered off after the strong wind stops, causing the mounting plate 3 to no longer apply pressure to the piston plate 15, the second spring 18 will stretch. During the stretching process of the second spring 18, the piston plate 15 will be pushed to move downward along the sleeve 33. At this time, the pressure in the sleeve 33 becomes negative pressure. Therefore, under the action of the conduit 17, the sleeve plate 13 is also in a negative pressure state. At this time, the external pressure is greater than the pressure in the sleeve plate 13, so the baffle 14 retracts into the sleeve plate 13, thereby driving the baffle 14 to retract and the camera 4 to extend from the device box 2;

[0075] Furthermore, after the motor 5 is powered off, the third spring 19 is no longer subjected to the extrusion force, so during the extension process of the third spring 19 , it assists the second spring 18 in pushing the mounting plate 3 downward.

[0076] Therefore, when there is a breeze, the wind cup 21 can drive the mounting rod 8 to rotate, so that the mounting rod 8 drives the brush 22 to make a circular motion on the surface of the second pressing plate 10, so as to scrape off the dust on the surface of the second pressing plate 10 and keep the surface of the second pressing plate 10 clean.

[0077] Since the wind direction is uncertain, the mounting rod 8 is fixedly mounted on the inner ring of the bearing 23 and the bearing 23 is mounted in the second pressing plate 10 , so that the second pressing plate 10 can rotate freely with the mounting rod 8 as the center.

[0078] Since the wind plates 24 are installed on both sides of the bottom wall of the second pressure plate 10, when wind blows, the end of the wind plate 24 that produces greater resistance to air flow will rotate along the wind, thereby driving the second pressure plate 10 to rotate, so that the airflow can always blow toward the edge of the arc surface, thereby ensuring that the second pressure plate 10 can move down normally.

[0079] In the cold winter, the temperature inside the mounting sleeve 26 is low under the action of the heat conductive sheet 30. Since the memory alloy 29 will shrink at low temperatures, the memory alloy 29 will drive the push plate 28 to move along the mounting sleeve 26 when it shrinks. During the movement, the push plate 28 will squeeze the second switch 27, thereby making the heating rod 25 work. Since the first cavity, the second cavity, and the third cavity are all connected, when the heating rod 25 heats the air in the device box 2, the heat will be dissipated to the three cavities. Therefore, in winter, the connection between the mounting rod 8 and the device box 2 and the connection between the rotating rod 20 and the second pressure plate 10 can be kept warm, thereby preventing snow water from freezing at the connection between the rotating rod 20 and the second pressure plate 10, thereby preventing the rotating rod 20 from being unable to rotate and preventing the mounting rod 8 from being unable to move up and down.

[0080] Since the solar panel 32 generates electricity under the action of light, and the solar panel 32 is connected in series with the battery 31, the electricity generated by the solar panel 32 will be transferred to the battery 31 to charge it, thereby reducing the amount of electricity required by the external power supply to charge it, thereby saving resources.

[0081] Since the entire device is installed outdoors, the surface of the first spring 9 is often in a wet state. Applying epoxy zinc-rich primer on the surface can prevent it from directly contacting the air, thereby reducing the probability of rusting.

[0082] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent with the technical solution of the present invention. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0083] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model, comprising a bracket (1); Features: A device box (2) with an opening at the bottom is fixedly mounted on the bracket (1), a mounting plate (3) is movably provided inside the device box (2), a camera (4) is fixedly mounted on the bottom wall of the mounting plate (3), a motor (5) is fixedly mounted on the inner top wall of the device box (2), a threaded rod (6) is vertically fixedly mounted on the output end of the motor (5), a screw hole adapted to the threaded rod (6) is provided on the mounting plate (3), a first guide rod (7) penetrating the mounting plate (3) is fixedly mounted on the inner wall of the device box (2), and a trigger mechanism for triggering the motor (5) to operate is provided on the device box (2); The trigger mechanism comprises a mounting rod (8) vertically and movably inserted on the top wall of the device box (2), a first spring (9) is sleeved on the mounting rod (8), and a second pressing plate (10) with an arc-shaped bottom surface is provided at the top end of the mounting rod (8), a partition (11) is fixedly installed in the device box (2), and a first switch (12) connected in series with the motor (5) is fixedly installed on the top wall of the partition (11); A sleeve plate (13) is fixedly mounted on the side wall of the device box (2), a baffle plate (14) is fixedly mounted inside the sleeve plate (13), and a driving mechanism for driving the baffle plate (14) to extend out of the sleeve plate (13) is provided inside the device box (2); The driving mechanism comprises a sleeve (33) mounted on the bottom wall of the partition (11), a piston plate (15) is movably arranged in the sleeve (33), a push rod (16) is vertically fixedly mounted on the bottom wall of the piston plate (15), a conduit (17) connected to the sleeve plate (13) is fixedly mounted on the side wall of the sleeve (33), and a reset mechanism for driving the mounting plate (3) and the baffle plate (14) to reset is arranged in the device box (2); The reset mechanism comprises a second spring (18) fixedly mounted between the piston plate (15) and the top wall of the sleeve (33); a fixing plate (34) is horizontally fixedly mounted on the inner wall of the device box (2); a third spring (19) is fixedly mounted on the bottom wall of the fixing plate (34); the third spring (19) is sleeved on the threaded rod (6); and the surface of the threaded rod (6) where the third spring (19) is fully compressed is smooth.

2. According to claim 1, a remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model is characterized in that: A rotating rod (20) is vertically rotatably mounted on the top wall of the second pressing plate (10), a wind cup (21) is evenly fixedly mounted on the rotating rod (20), and a brush (22) that is in contact with the surface of the second pressing plate (10) is fixedly mounted on the rotating rod (20).

3. According to claim 2, a remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model is characterized in that: A first cavity is formed on the second pressure plate (10), a bearing (23) is fixedly installed in the first cavity, the mounting rod (8) is fixedly connected to the inner ring of the bearing (23), and wind plates (24) are vertically fixedly installed on the bottom walls on both sides of the second pressure plate (10).

4. According to claim 3, a remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model is characterized in that: The mounting rod (8) and the rotating rod (20) are respectively provided with a second cavity and a third cavity connected to the first cavity, and the second cavity is connected to the device box (2). A heating rod (25) and a mounting sleeve (26) are fixedly installed on the inner top wall of the device box (2). A second switch (27) electrically connected to the heating rod (25) is fixedly installed in the mounting sleeve (26), and a push plate (28) cooperating with the second switch (27) is movably provided in the mounting sleeve (26). A memory alloy (29) is fixedly installed between the top wall of the mounting sleeve (26) and the push plate (28). A heat conducting plate (30) extending into the mounting sleeve (26) is fixedly installed on the top wall of the device box (2).

5. According to claim 1, a remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model is characterized in that: A storage battery (31) electrically connected to the motor (5) and the heating rod (25) is fixedly mounted on the top wall of the sleeve plate (13), and a solar panel (32) connected in series with the storage battery (31) is fixedly mounted between the sleeve plate (13) and the device box (2).

6. The remote monitoring device for comprehensive safety management of smart construction sites based on a BIM model according to claim 1 is characterized in that: The surface of the first spring (9) is coated with epoxy zinc-rich primer.

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