Intelligent campus safety monitoring device

Abstract

The invention belongs to the technical field of monitoring equipment, and particularly discloses an intelligent campus safety monitoring device which comprises a camera and a protective cover located on the outer side of the camera, a top plate is arranged at the top of the camera, a shell is arranged on the outer side of the top plate, and the center of the top face of the shell is connected with the output end of a waterproof stepping motor. The stepping motor is installed on the street lamp frame, two side frames are arranged at the bottom of the top plate, gears are fixed to the two ends of the camera, the two gears correspond to the two side frames in a one-to-one mode, and the gears are located in the side frames. According to the invention, the annular edge is rotated by using the plurality of teeth through the rotating rods, the annular edge is supported by the plurality of rotating rods through the cooperation of the teeth, the other rotating rods are rotated by using the tooth grooves through the rotating annular edge, the rotating annular edge drives the protective cover to rotate, and the rotating protective cover enables the crack to be staggered from the shooting direction of the camera. And the crack is prevented from influencing monitoring shooting of the camera.

Description

Technical Field

[0001] The present invention belongs to the technical field of monitoring devices, and particularly relates to a smart campus security monitoring device. Background Art

[0002] Campus monitoring uses monitoring devices to conduct all-round and full-HD video three-dimensional management and monitoring of school sites. The campus monitoring system is mainly networked real-time high-definition video monitoring, which enables management personnel to observe the situations of all important locations in the control room.

[0003] Since outdoor dome cameras are mostly used in outdoor environments, in order to prevent dust from entering the camera, a transparent protective cover is generally installed outside the dome camera, which can achieve the effect of protecting the dome camera. When the protective cover is broken by an external object, the hit area of the protective cover will crack, and then the crack marks will block the camera.

[0004] Therefore, it is very necessary to invent a smart campus security monitoring device to solve the above problems. Summary of the Invention

[0005] In view of the above problems, the present invention provides a smart campus security monitoring device to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A smart campus security monitoring device includes a camera and a protective cover outside the camera. A top plate is provided at the top of the camera, and a housing is provided outside the top plate. The output end of a waterproof stepping motor is connected to the center of the top surface of the housing, and the stepping motor is installed on a street lamp post. Two side frames are provided at the bottom of the top plate. Gears are fixed at both ends of the camera, and the two gears correspond to the two side frames one by one. The gears are inside the side frames. A first motor is fixed on the top surface of the top plate, and the output end of the first motor is connected to a main gear. The main gear and the gears are connected by a belt drive. The inner side wall of the housing is clamped with the top plate and the protective cover by a plurality of clamping components. An inner ring strip is provided on the inner side wall of the housing. The clamping component includes an arc-shaped clamping frame. The clamping groove on the circumferential outer surface of the arc-shaped clamping frame is slidably clamped on the surface of the inner ring strip. An inner rod is fixed on the concave surface of the arc-shaped clamping frame. A rotating sleeve is spirally sleeved on the surface of the inner side end of the inner rod. A plug rod is fixed at the inner side end of the rotating sleeve. A plurality of slots are provided on the circumferential outer surface of the top plate. The plurality of clamping components correspond to the plurality of slots one by one, and the inner side end of the plug rod is correspondingly inserted into the slots.

[0007] Furthermore, a rim is provided at the top of the circumferential outer side surface of the protective cover. A toothed groove is provided in an annular arrangement on the bottom surface of the rim. The clamping component includes a slip ring. A limiting block is connected to the bottom end of the slip ring. A rotating rod is provided inside the limiting block. A plurality of teeth are arranged in an annular arrangement on the circumferential outer side surface of the rotating rod. A plurality of clamping components are all clamped to the bottom of the rim by the rotating rod, and the rotating rod meshes with the toothed groove by the teeth.

[0008] Furthermore, the protective cover is made of a transparent material. The rotating rod makes the rim rotate by the teeth, and the rotating rim makes the protective cover rotate outside the camera.

[0009] Furthermore, the outer end of the rotating rod penetrates through the limiting block by a connecting rod. A circular plate is connected to the outer end of the connecting rod. A convex rod is fixed to the inner end of the rotating rod. The inner end of the convex rod is attached to the circumferential outer side surface of the protective cover. A second motor is provided at the top of the limiting block of the clamping component. A plurality of teeth are also arranged in an annular arrangement on the circumferential outer side surface of the circular plate. A driving gear is connected to the output end of the second motor, and the driving gear meshes with the teeth of the circular plate.

[0010] Furthermore, a first spring is sleeved on the surface of the inner rod. The inner end of the first spring is connected to the outer side surface of the slip ring, and the outer end of the first spring is connected to the concave surface of the arc-shaped clamping frame.

[0011] Furthermore, an inner frame is provided at the top of the top plate. A plurality of notches are provided at the top of the inner frame. The plurality of notches correspond to the plurality of clamping components one by one. A movable plate is provided inside the notch. A cross bar is fixed to the top of the slip ring. An arc-shaped plate is provided between the movable plate and the cross bar. The top end of the arc-shaped plate is hinged to the outer side of the movable plate, and the bottom end of the arc-shaped plate is sleeved on the surface of the cross bar.

[0012] Furthermore, the movable plate is horizontally arranged. An inner plate is provided inside the inner frame. The inner ends of the plurality of movable plates are all connected to the inner plate by support rods. The plurality of movable plates and the inner plate cooperate to form a bracket. A cylinder is fixed to the inner bottom surface of the inner frame. The output end of the cylinder is movably connected to the bottom surface of the inner plate.

[0013] Furthermore, side grooves are provided on both sides of the notch. A vertical rod is embedded inside the side groove. Limiting rods are fixed to both sides of the movable plate. The limiting rods are slidably sleeved on the surface of the vertical rod. A second spring is sleeved on the surface of the vertical rod. The top end of the second spring is connected to the limiting rod, and the bottom end of the second spring is connected to the bottom of the side groove.

[0014] The technical effects and advantages of the present invention:

[0015] 1. In the present invention, the rotating rod rotates the ring edge by means of multiple teeth. Since multiple rotating rods support the ring edge by tooth engagement, the rotating ring edge rotates the remaining rotating rods by means of tooth grooves. The rotating ring edge drives the protective cover to rotate, and the rotating protective cover dislocates the crack from the shooting direction of the camera, avoiding the influence of the crack on the monitoring and shooting of the camera.

[0016] 2. In the present invention, when the bracket moves downward, the arc-shaped plate pulls the rotating rod of the clamping component away from the top plate. During the movement of the slip ring, it is convenient for the limiting block to drive the rotating rod away from the protective cover. At this time, multiple rotating rods are separated from each other, and the damaged protective cover can be quickly removed; when the bracket moves upward, the arc-shaped plate pulls the rotating rod of the clamping component close to the top plate, and multiple rotating rods cooperate to clamp the protective cover, facilitating the quick replacement of the protective cover.

[0017] 3. In the present invention, due to the elastic force of the second spring, the limiting rod of the movable plate is at the top of the vertical rod. At this time, the arc-shaped plate uses the slip ring to make the rotating rod inside the limiting block clamped at the bottom of the ring edge, avoiding the protective cover falling off from the bottom of the camera due to the damage of the air cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall schematic diagram of the intelligent campus security monitoring device according to the embodiment of the present invention;

[0019] Figure 2 is the schematic diagram of the camera installed at the top and bottom according to the embodiment of the present invention;

[0020] Figure 3 is the schematic diagram of the internal components of the housing according to the embodiment of the present invention;

[0021] Figure 4 is the overall schematic diagram of the clamping component according to the embodiment of the present invention;

[0022] Figure 5 is the schematic diagram of the protective cover according to the embodiment of the present invention;

[0023] Figure 6 is the schematic diagram of the bracket clamped at the top of the inner frame according to the embodiment of the present invention;

[0024] In the figure: 1, camera; 2, protective cover; 3, top plate; 4, housing; 5, side frame; 6, gear; 7, first motor; 8, main gear; 9, inner ring strip; 10, arc-shaped clamping frame; 11, inner rod; 12, rotating sleeve; 13, inserting rod; 14, inserting slot; 15, ring edge; 16, tooth groove; 17, slip ring; 18, limiting block; 19, rotating rod; 20, tooth; 21, circular plate; 22, second motor; 23, moving gear; 24, first spring; 25, inner frame; 26, movable plate; 27, cross bar; 28, arc-shaped plate; 29, inner plate; 30, vertical rod; 31, limiting rod; 32, second spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0026] The present invention provides a smart campus security monitoring device, as Figures 1 to 4 shown, including a camera 1 and a protective cover 2 outside the camera 1. A top plate 3 is provided at the top of the camera 1, and a housing 4 is provided outside the top plate 3. The output end of a waterproof stepping motor is connected to the center of the top surface of the housing 4, and the stepping motor is installed on a street lamp pole. Two side frames 5 are provided at the bottom of the top plate 3. Gears 6 are fixed to both ends of the camera 1. The two gears 6 correspond to the two side frames 5 one by one. The gears 6 are inside the side frames 5. A first motor 7 is fixed to the top surface of the top plate 3. The output end of the first motor 7 is connected to a main gear 8. The main gear 8 and the gears 6 are connected by a belt drive. Among them, a control unit is built into the camera 1, and both the stepping motor and the first motor 7 are electrically connected to the control unit. When the camera 1 monitors the campus environment, the staff can control the stepping motor and the first motor 7 to work through the control unit. When the first motor 7 is started, the output end of the first motor 7 causes the main gear 8 to rotate. The rotating main gear 8 causes the gears 6 to rotate inside the side frames 5 through the belt, and the gears 6 drive the camera 1 to produce a vertical rotation effect between the two side frames 5. When the stepping motor is started, the stepping motor causes the top plate 3 to rotate through the housing 4 and the clamping components. The rotating top plate 3 causes the camera 1 to produce a horizontal rotation effect through the side frames 5. At this time, the rotating camera 1 can comprehensively monitor the campus.

[0027] The inner side wall of the housing 4 is clamped with the top plate 3 and the protective cover 2 by a plurality of clamping components. An inner ring strip 9 is arranged on the inner side wall of the housing 4. The clamping component includes an arc-shaped clamping frame 10. The clamping groove on the circumferential outer side surface of the arc-shaped clamping frame 10 is slidably clamped on the surface of the inner ring strip 9. An inner rod 11 is fixed on the concave surface of the arc-shaped clamping frame 10. A rotating sleeve 12 is spirally sleeved on the surface of the inner end of the inner rod 11. An inserting rod 13 is fixed on the inner end of the rotating sleeve 12. A plurality of inserting slots 14 are arranged on the circumferential outer side surface of the top plate 3. The plurality of clamping components correspond to the plurality of inserting slots 14 one by one, and the inner end of the inserting rod 13 is correspondingly inserted into the inserting slot 14. Insert the inserting rod 13 at the inner end of the rotating sleeve 12 into the inserting slot 14. The top of the top plate 3 corresponds to the housing 4. At this time, the arc-shaped clamping frame 10 at the outer end of the inner rod 11 corresponds to the inner ring strip 9 of the housing 4, so that the arc-shaped clamping frame 10 is in a stable state. Rotate the rotating sleeve 12. The spiral effect of the rotating rotating sleeve 12 and the inner rod 11 causes the inner rod 11 to gradually move out of the rotating sleeve 12. The moving inner rod 11 drives the arc-shaped clamping frame 10 to approach the inner ring strip 9 until the arc-shaped clamping frame 10 is correspondingly buckled on the surface of the inner ring strip 9. The plurality of clamping components clamp the top plate 3 at the inner part of the housing 4. At this time, the rotating housing 4 can make the top plate 3 rotate synchronously by means of the clamping components.

[0028] In Figures 3 to 5 it, a ring edge 15 is arranged at the top of the circumferential outer side surface of the protective cover 2. A ring-shaped arranged tooth groove 16 is arranged on the bottom surface of the ring edge 15. The clamping component includes a sliding ring 17. A limiting block 18 is connected to the bottom end of the sliding ring 17. A rotating rod 19 is arranged at the inner part of the limiting block 18. A plurality of annularly arranged teeth 20 are arranged on the circumferential outer side surface of the rotating rod 19. The plurality of clamping components are all clamped at the bottom of the ring edge 15 by means of the rotating rod 19, and the rotating rod 19 is meshed with the tooth groove 16 by means of the teeth 20. The protective cover 2 is made of a transparent material. The rotating rotating rod 19 makes the ring edge 15 rotate by means of the teeth 20. The rotating ring edge 15 makes the protective cover 2 rotate outside the camera 1. Before the top plate 3 carrying the camera 1 is installed at the bottom of the housing 4 through a plurality of clamping components, the protective cover 2 is correspondingly buckled outside the camera 1. When the inserting rod 13 of the clamping component is inserted into the inserting slot 14, at this time, the limiting block 18 at the bottom of the sliding ring 17 is clamped at the bottom of the ring edge 15 by means of the rotating rod 19. The plurality of clamping components all support the ring edge 15 by means of the rotating rod 19. At this time, the rotating rod 19 is meshed and matched with the tooth groove 16 at the bottom of the ring edge 15 by means of the teeth 20. The rotating rod 19 presses the bottom of the ring edge 15 by means of the teeth 20. Under the support and extrusion of the plurality of rotating rods 19, the top surface of the ring edge 15 of the protective cover 2 is attached to the bottom surface of the top plate 3 at this time.

[0029] The outer end of the rotating rod 19 passes through the limiting block 18 by means of a connecting rod. The outer end of the connecting rod is connected with a circular plate 21. The inner end of the rotating rod 19 is fixed with a convex rod, and the inner end of the convex rod is attached to the outer circumferential surface of the protective cover 2. A second motor 22 is arranged on the top of the limiting block 18 of the clamping component. The second motor 22 is electrically connected with the control unit. A plurality of teeth 20 are also arranged in a circular pattern on the outer circumferential surface of the circular plate 21. The output end of the second motor 22 is connected with a driving gear 23, and the driving gear 23 meshes with the teeth 20 of the circular plate 21. When the protective cover 2 is cracked due to an external impact, the second motor 22 is started. The output end of the second motor 22 causes the driving gear 23 to rotate. The meshing effect between the rotating driving gear 23 and the teeth 20 causes the circular plate 21 to drive the rotating rod 19 to rotate. The rotating rod 19 causes the ring edge 15 to rotate by means of a plurality of teeth 20. Since a plurality of rotating rods 19 all support the ring edge 15 by means of the cooperation of the teeth 20, the rotating ring edge 15 causes the other rotating rods 19 to rotate by means of the tooth grooves 16. The rotating ring edge 15 drives the protective cover 2 to rotate. The rotating protective cover 2 misaligns the crack with the shooting direction of the camera 1, avoiding the crack from affecting the monitoring and shooting of the camera 1.

[0030] In Figures 3 to 5 it, a first spring 24 is sleeved on the surface of the inner rod 11. The inner end of the first spring 24 is connected to the outer side surface of the sliding ring 17, and the outer end of the first spring 24 is connected to the concave surface of the arc-shaped clamping frame 10. To limit the arc-shaped clamping frame 10, the rotating sleeve 12 is reversely rotated. The spiral effect between the rotating rotating sleeve 12 and the inner rod 11 causes the inserting rod 13 to gradually move out of the inserting slot 14. At this time, the top plate 3 carrying the camera 1 is separated from the housing 4, facilitating the quick detachment of the camera 1. At this time, a comprehensive inspection of the camera 1 can be carried out.

[0031] The limiting block 18 is pushed away from the protective cover 2. The moving limiting block 18 drives the sliding ring 17 to compress the first spring 24 on the surface of the inner rod 11. The moving limiting block 18 drives the rotating rod 19 away from the protective cover 2. The moving rotating rod 19 slides at the bottom of the tooth groove 16 by means of the teeth 20 until the teeth 20 are separated from the tooth groove 16. The damaged protective cover 2 can be removed from the bottom of the top plate 3, and a new protective cover 2 is correspondingly installed at the bottom of the top plate 3, facilitating the quick replacement of the protective cover 2 and avoiding the situation that the camera 1 is damaged due to the breakage of the protective cover 2.

[0032] In Figure 2 、 Figure 3 and Figure 6Among them, an inner frame 25 is provided on the top of the top plate 3. A plurality of notches are provided on the top of the inner frame 25, and the plurality of notches correspond to the plurality of clamping components one by one. An active plate 26 is provided inside the notch. A cross bar 27 is fixed to the top of the slip ring 17. An arc plate 28 is provided between the active plate 26 and the cross bar 27. The top end of the arc plate 28 is hinged to the outer side of the active plate 26, and the bottom end of the arc plate 28 is sleeved on the surface of the cross bar 27. The active plate 26 is horizontally arranged. An inner plate 29 is provided inside the inner frame 25. The inner ends of the plurality of active plates 26 are all connected to the inner plate 29 by support rods. The plurality of active plates 26 and the inner plate 29 cooperate to form a bracket. A cylinder is fixed to the inner bottom surface of the inner frame 25. The cylinder is electrically connected to the control unit. The output end of the cylinder is movably connected to the bottom surface of the inner plate 29. When the cylinder is started and the output end of the cylinder causes the inner plate 29 to move up and down, the moving inner plate 29 uses the support rod to make the active plate 26 move up and down synchronously.

[0033] When the bracket moves downward, the downward moving bracket uses the active plate 26 to make the top end of the arc plate 28 move downward. The arc plate 28 rotates under the drive of the active plate 26. The bottom end of the rotating arc plate 28 uses the cross bar 27 to push the slip ring 17 away from the top plate 3. During the movement of the slip ring 17, it is convenient for the limiting block 18 to drive the rotating rod 19 away from the protective cover 2. At this time, the plurality of rotating rods 19 are separated from each other, and the damaged protective cover 2 can be quickly removed. Fit the top surface of the new protective cover 2 to the bottom surface of the top plate 3. The output end of the cylinder makes the bracket move upward. The upward moving bracket uses the active plate 26 to make the top end of the arc plate 28 move upward. The rotating arc plate 28 pulls the slip ring 17 close to the top plate 3. During the movement of the slip ring 17, it is convenient for the limiting block 18 to drive the rotating rod 19 close to the protective cover 2. At this time, the plurality of rotating rods 19 approach each other, and the plurality of rotating rods 19 cooperate to clamp the protective cover 2, which is convenient for quickly replacing the protective cover 2.

[0034] Side grooves are provided on both sides of the notch. A vertical rod 30 is embedded inside the side groove. Limiting rods 31 are fixed to both sides of the active plate 26. The limiting rods 31 are slidably sleeved on the surface of the vertical rod 30. A second spring 32 is sleeved on the surface of the vertical rod 30. The top end of the second spring 32 is connected to the limiting rod 31, and the bottom end of the second spring 32 is connected to the bottom of the side groove. When the bracket makes the active plate 26 move up and down, the active plate 26 uses the limiting rod 31 to move up and down on the surface of the vertical rod 30. The downward moving limiting rod 31 presses the second spring 32 on the surface of the vertical rod 30. When the cylinder is damaged, the elastic force of the second spring 32 makes the limiting rod 31 of the active plate 26 at the top end of the vertical rod 30. At this time, the arc plate 28 uses the slip ring 17 to make the rotating rod 19 inside the limiting block 18 clamped at the bottom of the ring edge 15, preventing the protective cover 2 from detaching from the bottom of the camera 1 due to the damage of the cylinder.

[0035] The working principle of the present invention:

[0036] Refer to Figures 1 to 6As shown, insert the insertion rod 13 at the inner end of the rotating sleeve 12 into the inside of the slot 14. The top plate 3 corresponds to the outer shell 4 at the top. At this time, the arc-shaped clamping frame 10 at the outer end of the inner rod 11 corresponds to the inner ring strip 9 of the outer shell 4, so that the arc-shaped clamping frame 10 is in a stable state. Rotate the rotating sleeve 12. The spiral effect of the rotating sleeve 12 and the inner rod 11 causes the inner rod 11 to gradually move out of the rotating sleeve 12. The moving inner rod 11 drives the arc-shaped clamping frame 10 to approach the inner ring strip 9 until the arc-shaped clamping frame 10 is correspondingly buckled on the surface of the inner ring strip 9. Multiple clamping components make the top plate 3 clamped on the inner side of the outer shell 4. At this time, the rotating outer shell 4 can make the top plate 3 rotate synchronously by using the clamping components.

[0037] Before the top plate 3 carrying the camera 1 is installed at the bottom of the outer shell 4 through multiple clamping components, buckle the protective cover 2 correspondingly outside the camera 1. When the clamping components make the insertion rod 13 inserted into the inside of the slot 14, at this time, the limiting block 18 at the bottom of the slip ring 17 is clamped at the bottom of the ring edge 15 by the rotating rod 19. Multiple clamping components all use the rotating rod 19 to cooperate with the supporting ring edge 15. At this time, the rotating rod 19 meshes with the tooth groove 16 at the bottom of the ring edge 15 by the tooth 20. The rotating rod 19 presses the bottom of the ring edge 15 by the tooth 20. Under the support and extrusion of multiple rotating rods 19, the top surface of the ring edge 15 of the protective cover 2 fits against the bottom surface of the top plate 3.

[0038] Start the first motor 7. The output end of the first motor 7 makes the main gear 8 rotate. The rotating main gear 8 makes the gear 6 rotate inside the side frame 5 by means of the belt. The gear 6 drives the camera 1 to produce a vertical rotation effect between the two side frames 5. Start the stepping motor. The stepping motor makes the top plate 3 rotate by means of the outer shell 4 and the clamping components. The rotating top plate 3 makes the camera 1 produce a horizontal rotation effect through the side frame 5. At this time, the rotating camera 1 can comprehensively monitor the campus.

[0039] When cracks occur in the protective cover 2 due to external impact, start the second motor 22. The output end of the second motor 22 makes the moving gear 23 rotate. The meshing effect of the rotating moving gear 23 and the tooth 20 makes the circular plate 21 drive the rotating rod 19 to rotate. The rotating rotating rod 19 makes the ring edge 15 rotate by means of multiple teeth 20. Since multiple rotating rods 19 all use the tooth 20 to cooperate with the supporting ring edge 15, the rotating ring edge 15 makes the remaining rotating rods 19 rotate by means of the tooth groove 16. The rotating ring edge 15 drives the protective cover 2 to rotate. The rotating protective cover 2 makes the crack misaligned with the shooting direction of the camera 1, avoiding the crack from affecting the monitoring and shooting of the camera 1.

[0040] When the support moves downward, the moving support uses the movable plate 26 to move the top end of the arc-shaped plate 28 downward. The arc-shaped plate 28 rotates under the drive of the movable plate 26. The bottom end of the rotating arc-shaped plate 28 uses the cross bar 27 to push the sliding ring 17 away from the top plate 3. During the movement of the sliding ring 17, it is convenient for the limiting block 18 to drive the rotating rod 19 away from the protective cover 2. At this time, the plurality of rotating rods 19 are separated from each other, and the damaged protective cover 2 can be quickly removed. Fit the top surface of the new protective cover 2 with the bottom surface of the top plate 3. The output end of the air cylinder makes the support move upward. The upward moving support uses the movable plate 26 to move the top end of the arc-shaped plate 28 upward. The rotating arc-shaped plate 28 pulls the sliding ring 17 close to the top plate 3. During the movement of the sliding ring 17, it is convenient for the limiting block 18 to drive the rotating rod 19 close to the protective cover 2. At this time, the plurality of rotating rods 19 approach each other, and the plurality of rotating rods 19 cooperate to clamp the protective cover 2, which is convenient for quickly replacing the protective cover 2.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. A smart campus security monitoring device, comprising a camera (1) and a protective cover (2) located outside the camera (1), characterized in that: The camera (1) is provided with a top plate (3) on the top, a housing (4) is provided on the outside of the top plate (3), a waterproof stepper motor output end is connected at the center of the top surface of the housing (4), and the stepper motor is installed on the street lamp frame, two side frames (5) are provided at the bottom of the top plate (3), gears (6) are fixed at both ends of the camera (1), the two gears (6) correspond to the two side frames (5) one by one, and the gears (6) are located inside the side frames (5), a first motor (7) is fixed on the top surface of the top plate (3), the output end of the first motor (7) is connected to a main gear (8), the main gear (8) and the gear (6) are connected by a belt transmission, and the inner wall of the housing (4) is connected by a belt transmission. A plurality of clamping components clamp the top plate (3) and the protective cover (2); an inner ring strip (9) is provided on the inner side wall of the outer shell (4); the clamping component comprises an arc-shaped clamping frame (10); a clamping groove on the outer circumferential surface of the arc-shaped clamping frame (10) is slidably clamped on the surface of the inner ring strip (9); an inner rod (11) is fixed on the inner concave surface of the arc-shaped clamping frame (10); a rotating sleeve (12) is spirally sleeved on the inner end surface of the inner rod (11); an inserting rod (13) is fixed to the inner end of the rotating sleeve (12); a plurality of slots (14) are provided on the outer circumferential surface of the top plate (3); the plurality of clamping components correspond to the plurality of slots (14) one by one, and the inner ends of the inserting rods (13) are correspondingly inserted into the slots (14).

2. The smart campus security monitoring device according to claim 1 is characterized in that: The top of the outer circumferential surface of the protective cover (2) is provided with an annular edge (15), and the bottom surface of the annular edge (15) is provided with tooth grooves (16) arranged in an annular manner. The clamping component comprises a slip ring (17), and the bottom end of the slip ring (17) is connected to a limiting block (18). The inner side of the limiting block (18) is provided with a rotating rod (19), and the outer circumferential surface of the rotating rod (19) is provided with a plurality of tooth teeth (20) arranged in an annular manner. The plurality of clamping components are clamped to the bottom of the annular edge (15) by means of the rotating rod (19), and the rotating rod (19) is meshed with the tooth grooves (16) by means of the tooth teeth (20).

3. The smart campus security monitoring device according to claim 2 is characterized in that: The protective cover (2) is made of a transparent material, and the rotating rod (19) uses teeth (20) to rotate the ring edge (15), and the rotating ring edge (15) causes the protective cover (2) to rotate outside the camera (1).

4. The smart campus security monitoring device according to claim 2 is characterized in that: The outer end of the rotating rod (19) passes through the limiting block (18) by means of a connecting rod, the outer end of the connecting rod is connected to a circular plate (21), the inner end of the rotating rod (19) is fixed with a convex rod, the inner end of the convex rod is in contact with the outer circumferential surface of the protective cover (2), a second motor (22) is arranged on the top of the limiting block (18) of the clamping component, a plurality of teeth (20) are also arranged in an annular manner on the outer circumferential surface of the circular plate (21), the output end of the second motor (22) is connected to a moving gear (23), and the moving gear (23) is in mesh with the teeth (20) of the circular plate (21).

5. The smart campus security monitoring device according to claim 2 is characterized in that: A first spring (24) is sleeved on the surface of the inner rod (11), the inner end of the first spring (24) is connected to the outer side of the slip ring (17), and the outer end of the first spring (24) is connected to the inner concave surface of the arc-shaped clamping frame (10).

6. The smart campus security monitoring device according to claim 2 is characterized in that: An inner frame (25) is arranged at the top of the top plate (3), a plurality of notches are arranged at the top of the inner frame (25), the plurality of notches correspond to the plurality of clamping components one by one, a movable plate (26) is arranged inside the notch, a cross bar (27) is fixed at the top of the slip ring (17), an arc plate (28) is arranged between the movable plate (26) and the cross bar (27), the top end of the arc plate (28) is hinged to the outer side of the movable plate (26), and the bottom end of the arc plate (28) is sleeved on the surface of the cross bar (27).

7. The smart campus security monitoring device according to claim 6 is characterized in that: The movable plate (26) is arranged horizontally, an inner plate (29) is arranged inside the inner frame (25), the inner ends of the plurality of movable plates (26) are connected to the inner plate (29) by means of supporting rods, the plurality of movable plates (26) cooperate with the inner plate (29) to form a bracket, a cylinder is fixed to the inner bottom surface of the inner frame (25), and the output end of the cylinder is movably connected to the bottom surface of the inner plate (29).

8. The smart campus security monitoring device according to claim 7 is characterized in that: Side grooves are arranged on both sides of the notch, and vertical rods (30) are embedded in the side grooves. Limiting rods (31) are fixed on both sides of the movable plate (26), and the limiting rods (31) are slidably sleeved on the surface of the vertical rods (30). A second spring (32) is sleeved on the surface of the vertical rods (30), and the top end of the second spring (32) is connected to the limiting rod (31), and the bottom end of the second spring (32) is connected to the bottom of the side grooves.

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