A public security service-based geographic information data acquisition device

Abstract

The application discloses a kind of based on public security service geographic information data acquisition device, and the present application relates to geographic information data acquisition technical field, including organism, the both ends of organism are equipped with forearm lever and rear arm lever, and the bottom surface of organism is equipped with placing groove, the top surface of placing groove is equipped with universal joint, the bottom of universal joint is fixedly connected with rotary table, the bottom surface of forearm lever and rear arm lever is fixedly connected with fixed cylinder, the advantage of the present application is that: when the inclination angle of camera increases, organism pitch angle is automatically reduced, so that the speed of unmanned aerial vehicle is automatically reduced, the stability of unmanned aerial vehicle flight is guaranteed, manual adjustment is not needed, avoid improper manual operation or not timely adjustment, improve the safety of unmanned aerial vehicle, the inclination angle of camera is adjusted simultaneously, and the unmanned aerial vehicle attitude is not influenced, so that the shooting of camera can meet the use demand, camera does not need to be adjusted again, avoid confusion collection target, guarantee the collection efficiency simultaneously, can be adapted to the application of public security service.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geographic information data collection, in particular to a geographic information data collection device based on public security business. BACKGROUND

[0002] The implementation steps of the geographic information data collection of public security business include: basic geographic information collection, public security special information collection, mobile collection method and social data integration, wherein the mobile collection method includes the mode of obtaining three-dimensional data of complex areas by unmanned aerial vehicle aerial photography, and the unmanned aerial vehicle needs to be tilted forward to increase the pitch angle of the unmanned aerial vehicle, and vice versa, the unmanned aerial vehicle needs to reduce the pitch angle to slow down, and the unmanned aerial vehicle also needs to tilt the body to the turning direction when turning.

[0003] When the unmanned aerial vehicle aerial photography obtains three-dimensional data of complex areas, the tilt angle of the camera on the unmanned aerial vehicle needs to be adjusted to establish a three-dimensional model by oblique photogrammetry, and the specific adjustment angle is: when obtaining top view images by two-dimensional plane measurement, the camera is vertical (0°), which is suitable for monitoring the overall situation of flat areas such as squares and roads; when capturing the top and part of the side of the building, the camera is tilted (15°~45°), which takes into account the building facade and the top, and is suitable for low-density areas such as urban villages; when focusing on building facade information and reducing top information, the camera is greatly tilted (45°~60°), which focuses on obtaining details such as facade structure and window position that the suspect may climb.

[0004] As described above, after adjusting the tilt angle of the camera, when the flight attitude of the unmanned aerial vehicle changes, the tilt angle of the camera will also change accordingly, so that the camera shooting cannot meet the use requirements, and the camera needs to be adjusted again, the camera image shakes violently, which is easy to disorder the collection target, and reduces the collection efficiency, which cannot adapt to the application of public security business, and the tilt angle adjustment of the camera also has a corresponding impact on the flight stability of the unmanned aerial vehicle, for example, when the camera is greatly tilted (>45°), the wind resistance of the camera increases by 30%~50%, the flight speed needs to be reduced (recommended to be ≤8m / s) to balance the moment of the unmanned aerial vehicle.

[0005] Through retrieval, Chinese patent application CN222013156U discloses an unmanned aerial vehicle remote geographic information data collection device, which can clean the collection probe during flight, but cannot solve the above problems, and when the tilt angle of the camera is adjusted, the flight speed of the unmanned aerial vehicle cannot be automatically adjusted, and manual adjustment is still needed, if the operation is improper or not timely, the unmanned aerial vehicle is easy to shake violently or even crash, and the camera cannot be automatically stored when the unmanned aerial vehicle lands, and an additional motor is still needed for control, so the camera is easy to be damaged. SUMMARY

[0006] The present application aims to provide a geographic information data collection device based on public security business.

[0007] To solve the problems raised in the background art, the present application provides the following technical solutions: A geographic information data acquisition device based on public security business, comprising a body, two ends of the body are provided with forearm rods and rear arm rods, and a placing groove is formed in the bottom surface of the body, a universal joint is installed on the top surface of the placing groove, the bottom end of the universal joint is fixedly connected with a rotating frame, the bottom surfaces of the forearm rods and the rear arm rods are fixedly connected with fixed cylinders, one end of a first piston rod is slidably sleeved in the fixed cylinder, the other end of the first piston rod is fixedly connected with a base, a conduit is formed in the top end of the fixed cylinder, an inner cavity is formed in the rotating frame, a guide groove is formed between the inner cavity and the conduit, a piston plate is slidably sleeved in the inner cavity, the end of the piston plate is fixedly connected with a camera, a motor is installed on the side wall of the rotating frame, the output end of the motor is fixedly connected with a driving gear, the outer surface of the driving gear is meshingly connected with a driven gear, and the driven gear is fixedly connected with the camera.

[0008] As a further scheme of the present application: the two forearm rods and the two rear arm rods are symmetrically arranged about the bisector plane of the body, the rotating frame is arranged in a U shape, and the camera is located between the rotating frames and is rotationally connected with the rotating frames.

[0009] As a further scheme of the present application: the four fixed cylinders are arranged, the ends of the conduits are respectively communicated with the four fixed cylinders, the inner cavity is arranged in a semicircular shape, the piston plate is arranged in an L shape and extends out of the rotating frame, and a sealing ring is arranged between the piston plate and the rotating frame.

[0010] As a further scheme of the present application: a first closed cavity is formed in each of the forearm rods and the rear arm rods, a first connecting groove is formed between the first closed cavity and the fixed cylinder, one end of a second piston rod is slidably sleeved in the first closed cavity, the other end of the second piston rod is meshingly sleeved with a driving roller, one end of a track belt is slidably sleeved with the outer surface of the driving roller, the other end of the track belt is slidably sleeved with a driven roller, an electric motor is installed in each of the forearm rods and the rear arm rods, one end of a transmission shaft is fixedly connected with the output end of the electric motor, the other end of the transmission shaft is fixedly connected with a sun gear, a planet gear is meshingly connected with the outer surface of the sun gear, an outer gear ring is meshingly connected with the outer surface of the planet gear, a propeller is fixedly connected with the top surface of the outer gear ring, a planet carrier is rotationally connected with the bottom surface of the planet gear, a limiting rod is slidably connected with the outer surface of the planet carrier, a convex block is fixedly connected with the bottom surface of the planet carrier, a lifting block is meshingly sleeved with the central axis of the driven roller, one end of a compression spring is fixedly connected with the top surface of the lifting block, a pressure bearing plate is fixedly connected with the other end of the compression spring, a blocking rod is fixedly connected with the top surface of the pressure bearing plate, and a nest is fixedly connected with the end surface of the electric motor.

[0011] As a further scheme of the present application: the bottom end of the second piston rod is provided in a polygonal shape, the driving roller, the track and the driven roller are sleeved with the front arm rod, the driving roller, the track and the driven roller are sleeved with the rear arm rod, and the limiting rod is fixedly connected with the inner surfaces of the front arm rod and the rear arm rod.

[0012] As a further scheme of the present application: the limiting rod is in contact with the protrusion, the nest is sleeved with the transmission shaft, the nest is nested with the pressure bearing plate, the nest is nested with the lifting block, and the screw thread direction of the lifting block in the front arm rod is opposite to the screw thread direction of the lifting block in the rear arm rod.

[0013] As a further scheme of the present application: the second closed cavity is formed in the base, the third closed cavity is formed in the top end of the first piston rod, the second closed cavity and the third closed cavity are communicated with the connecting pipe, the third piston rod is sleeved and slidably connected in the second closed cavity, the fourth piston rod is sleeved and slidably connected in the third closed cavity, the fourth closed cavity and the fifth closed cavity are formed in the fixed cylinder, the fourth closed cavity and the fifth closed cavity are communicated with the second connecting groove, the fifth piston rod is sleeved and slidably connected in the fourth closed cavity, and one end of the sixth piston rod is sleeved and slidably connected in the fifth closed cavity.

[0014] As a further scheme of the present application: the bottom end of the third piston rod extends out of the base, the end of the fourth piston rod is clamped with the bottom wall of the fixed cylinder, the fourth piston rod is in contact with the fifth piston rod, the ball valve is rotatably sleeved with the first connecting groove, and the transmission belt is sleeved with the fixed cylinder.

[0015] By adopting the above technical scheme, compared with the prior art, the present application has the following beneficial effects:

[0016] The transmission shaft drives the sun gear to rotate, the sun gear drives the planet gear to rotate, the planet gear drives the outer gear ring to rotate, the propeller on the outer gear ring rotates, and the body is provided with lift. When the torque limit of the planet carrier is reduced, the output speed of the outer gear ring and the propeller is increased, and vice versa. Therefore, the propeller on the front arm rod accelerates, the front arm rod is lifted, the propeller on the rear arm rod slows down, the rear arm rod is lowered, the inclination angle of the camera is increased, the body automatically reduces the pitch angle, the wind speed of the unmanned aerial vehicle is automatically reduced, the stability of the unmanned aerial vehicle in flight is ensured, manual adjustment is not required, improper manual operation or untimely adjustment is avoided, and the safety of the unmanned aerial vehicle is improved.

[0017] The gravity center of the camera and the rotating frame is offset, the universal joint at the top of the rotating frame is correspondingly rotated, the gravity center of the rotating frame and the camera is rebalanced while the camera satisfies the inclination angle adjustment, when the unmanned aerial vehicle is decelerated, the posture of the unmanned aerial vehicle is changed, the universal joint is rotated relative to the unmanned aerial vehicle, the gravity center of the rotating frame and the camera is unchanged, and the inclination angle of the camera is unchanged, so that the inclination angle adjustment of the camera is not affected by the posture of the unmanned aerial vehicle, the shooting of the camera can meet the use requirement, the camera does not need to be re-adjusted, the target is avoided to be collected disorderly, the collection efficiency is ensured, and the application of public security business can be adapted.

[0018] The fourth piston rod in the third closed cavity is compressed, the fourth piston rod is released from clamping of the fixed cylinder, the restriction of the fifth piston rod is released, the fifth piston rod is returned under the action of air pressure, the fourth closed cavity sucks air in the fifth closed cavity through the second connecting groove, the sixth piston rod is returned, the sixth piston rod drives the transmission belt to rotate, the ball valve on the transmission belt rotates, the ball valve blocks the first connecting groove, the movement of the first piston rod does not affect the rotating speed of the propeller, until the unmanned aerial vehicle is stably stayed on the ground, the air in the fixed cylinder is compressed by the first piston rod, according to the above process, the air pressure at the top of the inner cavity is increased, the piston plate drives the camera to fully rotate, the inclination angle of the camera is increased and the camera is retracted into the placing groove, the purpose of automatically storing the camera is achieved, the motor is not additionally controlled, the damage of the camera is avoided, and the cost is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the geographic information data acquisition device based on public security business;

[0020] Figure 2 It is a catheter structure schematic view in the embodiment of the application;

[0021] Figure 3 It is a rotating frame structure cross-sectional view in the embodiment of the application;

[0022] Figure 4 It is a forearm rod structure half-section schematic view in the embodiment of the application;

[0023] Figure 5 It is a Figure 4 A part structure enlarged view in the embodiment of the application;

[0024] Figure 6 It is a first connecting groove structure schematic view in the embodiment of the application;

[0025] Figure 7 It is a Figure 6Enlarged view of the structure of middle B part;

[0026] Figure 8 Structure diagram of planetary carrier in the embodiment of the application;

[0027] Figure 9 Structure diagram of the fourth piston rod in the embodiment of the application;

[0028] Figure 10 Front view of the camera structure in the embodiment of the application.

[0029] In the figure: 1, body; 2, forearm lever; 3, rear arm lever; 4, placing groove; 5, rotating frame; 6, fixed cylinder; 7, first piston rod; 8, base; 9, conduit; 10, inner cavity; 11, guide groove; 12, piston plate; 13, camera; 14, motor; 15, driving gear; 16, driven gear; 17, first closed cavity; 18, first connecting groove; 19, second piston rod; 20, driving roller; 21, track; 22, driven roller; 23, electric motor; 24, transmission shaft; 25, sun gear; 26, planetary gear; 27, outer gear ring; 28, propeller; 29, planetary carrier; 30, limiting rod; 31, protrusion; 32, lifting block; 33, compression spring; 34, pressure bearing plate; 35, blocking rod; 36, nest; 37, second closed cavity; 38, third closed cavity; 39, connecting pipe; 40, third piston rod; 41, fourth piston rod; 42, fourth closed cavity; 43, fifth closed cavity; 44, second connecting groove; 45, fifth piston rod; 46, sixth piston rod; 47, external thread; 48, transmission belt; 49, ball valve; 50, universal joint. DETAILED DESCRIPTION

[0030] The specific embodiments of the application will be further described below with reference to the drawings. It should be noted that the description of these embodiments is used to help understand the application, but does not constitute a limitation on the application. In addition, the technical features involved in the various embodiments of the application described below can be combined with each other as long as they do not conflict with each other. Embodiment 1

[0031] Please refer to Figures 1-4 and Figure 10The application provides a technical scheme: a geographic information data acquisition device based on public security services, which comprises a body 1, two front arm rods 2 and two rear arm rods 3 are installed at two ends of the body 1, and a placing groove 4 is formed in the bottom surface of the body 1, a universal joint 50 is installed on the top surface of the placing groove 4, a rotating frame 5 is fixedly connected to the bottom end of the universal joint 50, a fixing cylinder 6 is fixedly connected to the bottom surfaces of the front arm rods 2 and the rear arm rods 3, one end of a first piston rod 7 is slidably sleeved in the fixing cylinder 6, a base 8 is fixedly connected to the other end of the first piston rod 7, a conduit 9 is formed in the top end of the fixing cylinder 6, an inner cavity 10 is formed in the rotating frame 5, a guide groove 11 is formed between the inner cavity 10 and the conduit 9, a piston plate 12 is slidably sleeved in the inner cavity 10, a camera 13 is fixedly connected to the end of the piston plate 12, a motor 14 is installed on the side wall of the rotating frame 5, a driving gear 15 is fixedly connected to the output end of the motor 14, a driven gear 16 is connected to the outer surface of the driving gear 15, and the driven gear 16 is fixedly connected to the camera 13.

[0032] Please refer to Figure 2 The two front arm rods 2 and the two rear arm rods 3 are symmetrically arranged about the bisector plane of the body 1, the rotating frame 5 is arranged in a U shape, the camera 13 is located between the rotating frames 5, and the camera 13 is rotationally connected with the rotating frames 5.

[0033] Please refer to Figures 1-3 The four fixing cylinders 6 are in communication with the ends of the conduit 9, the inner cavity 10 is arranged in a semicircular shape, the piston plate 12 is arranged in an L shape and extends out of the rotating frame 5, and a sealing ring is arranged between the piston plate 12 and the rotating frame 5.

[0034] Specifically, in the process of adjusting the inclination angle of the camera 13, the motor 14 on the rotating stand 5 is started to drive the driven gear 16 through the driving gear 15, so that the camera 13 on the driven gear 16 rotates to adjust the inclination angle of the camera 13. In this process, as the camera 13 rotates, the piston plate 12 on the camera 13 pushes the top end of the negative pressure inner cavity 10, so that the inner cavity 10 sucks the air in the fixed cylinder 6 through the guide groove 11 and the conduit 9. The first piston rod 7 is fixed to the fixed cylinder 6 through the fourth piston rod 41, so that the fixed cylinder 6 has a negative pressure, and the fixed cylinder 6 sucks the air in the first sealed cavity 17 through the first connecting groove 18, so that the second piston rod 19 in the first sealed cavity 17 descends, and the driving roller 20 on the second piston rod 19 cannot descend, so that the driving roller 20 rotates under the drive of the second piston rod 19, and the driving roller 20 drives the driven roller 22 to rotate through the track 21, so that the driven roller 22 drives the lifting block 32 to move, and the lifting block 32 cannot rotate due to the limitation of the nesting 36, so that the lifting block 32 in the forearm rod 2 descends under the drive of the driven roller 22, and then the lifting block 32 in the forearm rod 2 releases the compression spring 33 on the pressure-bearing plate 34, so that the descending resistance of the pressure-bearing plate 34 decreases, the revolution resistance of the protrusion 31 on the planet carrier 29 decreases, the torque limit of the planet carrier 29 in the forearm rod 2 decreases, and the torque limit of the planet carrier 29 in the rear arm rod 3 increases due to the opposite screw directions of the lifting blocks 32 in the forearm rod 2 and the rear arm rod 3. At the same time, the motor 23 drives the sun gear 25 to rotate through the transmission shaft 24, so that the sun gear 25 drives the planet gear 26 to rotate, and then the planet gear 26 drives the outer gear ring 27 to rotate, so that the propeller 28 on the outer gear ring 27 rotates to provide lift for the body 1. When the torque limit of the planet carrier 29 decreases, the output speed of the outer gear ring 27 and the propeller 28 changes inversely with the torque limit of the planet carrier 29, that is, when the torque limit of the planet carrier 29 decreases, the speed of the outer gear ring 27 and the propeller 28 increases, and vice versa. Therefore, the propeller 28 on the forearm rod 2 accelerates to lift the forearm rod 2, and the propeller 28 on the rear arm rod 3 decelerates to lower the rear arm rod 3. Therefore, when the inclination angle of the camera 13 increases, the pitch angle of the body 1 automatically decreases, the airspeed of the unmanned aerial vehicle automatically decreases, the stability of the unmanned aerial vehicle in flight is ensured, manual adjustment is not needed, improper manual operation or untimely adjustment is avoided, and the safety of the unmanned aerial vehicle is improved. Example 2

[0035] Please refer to Figure 6 and Figure 8The application provides a technical scheme: a geographic information data acquisition device based on public security services, first closed cavities 17 are formed in the front arm rod 2 and the rear arm rod 3, the first closed cavities 17 are in communication with the fixed cylinder 6 through first connecting grooves 18, one end of a second piston rod 19 is slidably sleeved in the first closed cavities 17, the other end of the second piston rod 19 is sleeved with a driving roller 20, one end of a caterpillar track 21 is slidably sleeved with the outer surface of the driving roller 20, the other end of the caterpillar track 21 is slidably sleeved with a driven roller 22, the front arm rod 2 and the rear arm rod 3 are both installed with electric motors 23, one end of a transmission shaft 24 is fixedly connected with the output end of the electric motor 23, the other end of the transmission shaft 24 is fixedly connected with a sun gear 25, the outer surface of the sun gear 25 is connected with a planet wheel 26, the outer surface of the planet wheel 26 is connected with an external gear ring 27, the top surface of the external gear ring 27 is fixedly connected with a propeller 28, the bottom surface of the planet wheel 26 is rotatably connected with a planet carrier 29, the outer surface of the planet carrier 29 is slidably connected with a limiting rod 30, the bottom surface of the planet carrier 29 is fixedly connected with a protruding block 31, the middle axis of the driven roller 22 is sleeved with a lifting block 32, one end of a compression spring 33 is fixedly connected with the top surface of the lifting block 32, the other end of the compression spring 33 is fixedly connected with a pressure bearing plate 34, the top surface of the pressure bearing plate 34 is fixedly connected with a blocking rod 35, and the end surface of the electric motor 23 is fixedly connected with a nest 36.

[0036] Please refer to Figure 6 and Figure 8 , the bottom end of the second piston rod 19 is in a polygonal prism shape, the driving roller 20, the caterpillar track 21 and the driven roller 22 are all sleeved with the front arm rod 2, the driving roller 20, the caterpillar track 21 and the driven roller 22 are all sleeved with the rear arm rod 3, and the limiting rod 30 is fixedly connected with the inner surfaces of the front arm rod 2 and the rear arm rod 3.

[0037] Please refer to Figure 8 , the blocking rod 35 is in contact with the protruding block 31, the nest 36 is sleeved with the transmission shaft 24, the nest 36 is embeddedly sleeved with the pressure bearing plate 34, the nest 36 is embeddedly sleeved with the lifting block 32, and the screw direction of the lifting block 32 in the front arm rod 2 is opposite to the screw direction of the lifting block 32 in the rear arm rod 3.

[0038] Specifically, in the process of adjusting the inclination angle of the camera 13, the gravity center of the camera 13 and the rotating frame 5 deviates, at this time, the universal joint 50 at the top end of the rotating frame 5 rotates correspondingly, so that the camera 13 meets the inclination angle adjustment, and the gravity center of the rotating frame 5 and the camera 13 is rebalanced, when the unmanned aerial vehicle slows down, the attitude of the machine body 1 changes, at this time, the machine body 1 rotates relative to the universal joint 50, and the gravity center of the rotating frame 5 and the camera 13 does not change, so that the inclination angle of the camera 13 does not change, the inclination angle adjustment of the camera 13 is not affected by the attitude of the unmanned aerial vehicle, the shooting of the camera 13 can meet the use demand, the camera 13 does not need to be re-adjusted, the collection target is avoided to be confused, the collection efficiency is ensured, and the application of the public security service can be adapted. Example 3

[0039] Referring to Figure 4 , Figure 5 , Figure 7 and Figure 9 , the present application provides a technical solution: a kind of based on public security business geographic information data acquisition device, second closed cavity 37 is set in base 8, the top of first piston rod 7 is set with third closed cavity 38, second closed cavity 37 and third closed cavity 38 are communicated with connecting pipe 39, third piston rod 40 is slidably sleeved in second closed cavity 37, fourth piston rod 41 is slidably sleeved in third closed cavity 38, fourth closed cavity 42 and fifth closed cavity 43 are set in fixed cylinder 6, second closed cavity 42 and fifth closed cavity 43 are communicated with second connecting groove 44, fifth piston rod 45 is slidably sleeved in fourth closed cavity 42, one end of sixth piston rod 46 is slidably sleeved in fifth closed cavity 43, the other end of sixth piston rod 46 is set with external thread 47, one end of transmission belt 48 is engaged with the outer surface of external thread 47, ball valve 49 is fixedly connected to the other end of transmission belt 48.

[0040] Referring to Figure 5 , Figure 7 and Figure 9 , the bottom end of third piston rod 40 extends to the outside of base 8, the end of fourth piston rod 41 is clamped with the bottom wall of fixed cylinder 6, and fourth piston rod 41 is in contact with fifth piston rod 45, ball valve 49 is rotatably sleeved with first connecting groove 18, and transmission belt 48 is sleeved with fixed cylinder 6.

[0041] Specifically, in the process of landing of the unmanned aerial vehicle, the base 8 gradually descends until the third piston rod 40 on the base 8 is in contact with the ground, at which time the unmanned aerial vehicle is lowered again, so that the third piston rod 40 on the base 8 compresses the air in the second closed cavity 37, so that the compressed air enters the third closed cavity 38 through the connecting pipe 39, so that the fourth piston rod 41 in the third closed cavity 38 is compressed and shrinks, so that the fourth piston rod 41 is disengaged from the clamping of the fixed cylinder 6, and at the same time the restriction of the fifth piston rod 45 is disengaged, so that the fifth piston rod 45 returns under the action of air pressure, thereby causing the fourth closed cavity 42 to suck the air in the fifth closed cavity 43 through the second connecting groove 44, so that the sixth piston rod 46 returns, and further causing the sixth piston rod 46 to drive the transmission belt 48 to rotate, so that the ball valve 49 on the transmission belt 48 rotates, so that the ball valve 49 blocks the first connecting groove 18, avoiding the movement of the first piston rod 7 affecting the rotating speed of the propeller 28, until the unmanned aerial vehicle is stably placed on the ground, at which time the first piston rod 7 compresses the air in the fixed cylinder 6, according to the above process, the air pressure at the top of the inner cavity 10 rises, so that the piston plate 12 drives the camera 13 to rotate fully, so that the inclination angle of the camera 13 increases and shrinks into the placing groove 4, achieving the purpose of automatically storing the camera 13, without additional control of the motor, not only avoiding the damage of the camera 13, but also further reducing the cost.

[0042] The working principle and use process of the present application: when the inclination angle of the camera 13 needs to be adjusted, start the motor 14 on the rotating frame 5, so that the motor 14 drives the driven gear 16 to rotate through the driving gear 15, so that the camera 13 on the driven gear 16 rotates, thereby adjusting the inclination angle of the camera 13. During this process, as the camera 13 rotates, the piston plate 12 on the camera 13 negative pressure at the top of the inner cavity 10, so that the inner cavity 10 sucks the air in the fixed cylinder 6 through the guide groove 11 and the conduit 9, and the first piston rod 7 is fixed to the fixed cylinder 6 through the fourth piston rod 41, so that the fixed cylinder 6 is in negative pressure, thereby causing the fixed cylinder 6 to suck the air in the first closed cavity 17 through the first connecting groove 18, so that the second piston rod 19 in the first closed cavity 17 descends, and the driving roller 20 on the second piston rod 19 cannot descend, so that the driving roller 20 rotates under the drive of the second piston rod 19, so that the driving roller 20 drives the driven roller 22 to rotate through the track 21, thereby causing the driven roller 22 to drive the lifting block 32 to move, and the lifting block 32 is limited from rotating by the nesting 36, so that the lifting block 32 in the forearm rod 2 descends under the drive of the driven roller 22, thereby causing the lifting block 32 in the forearm rod 2 to relax the compression spring 33 on the pressure bearing plate 34, so that the resistance of the pressure bearing plate 34 descending is reduced, so that the resistance of the lugs 31 on the planet carrier 29 is reduced, thereby reducing the torque limit of the planet carrier 29 in the forearm rod 2, and the screw direction of the lifting block 32 in the forearm rod 2 is opposite to that of the lifting block 32 in the rear arm rod 3, so that the torque limit of the planet carrier 29 in the rear arm rod 3 is improved.

[0043] The above process is carried out at the same time, the motor 23 through the transmission shaft 24 drive sun gear 25 rotation, so that the sun gear 25 drive planetary gear 26 rotation, so that the planetary gear 26 drive the outer tooth ring 27 rotation, so that the propeller 28 on the outer tooth ring 27 rotation, thus providing lift for the body 1, when the above-mentioned planetary carrier 29 torque limit is reduced, the sun gear 25 rotation speed constant, the planetary carrier 29 torque limit and the output speed of the outer tooth ring 27 is inversely related, that is, the planetary carrier 29 torque limit is reduced, the rotation speed of the outer tooth ring 27 and the propeller 28 is improved, and vice versa, thus the propeller 28 on the forearm rod 2 accelerates, so that the forearm rod 2 rises, the propeller 28 on the rear arm rod 3 decelerates, so that the rear arm rod 3 drops, thus the inclination angle of the camera 13 increases, the body 1 automatically reduces the pitch angle, so that the wind speed of the unmanned aerial vehicle is automatically reduced, ensuring the stability of the unmanned aerial vehicle flight, without manual adjustment, avoiding improper or not timely adjustment, improving the safety of the unmanned aerial vehicle;

[0044] The above-mentioned camera 13 inclination adjustment, the camera 13 and the center of gravity of the turntable 5 offset, at this time the universal joint 50 at the top of the turntable 5 rotates accordingly, so that the camera 13 meets the inclination angle adjustment at the same time, the center of gravity of the turntable 5 and the camera 13 is rebalanced, when the unmanned aerial vehicle decelerates, the attitude of the body 1 changes, at this time the body 1 rotates relative to the universal joint 50, while the center of gravity of the turntable 5 and the camera 13 does not change, the inclination angle of the camera 13 does not change, so that the inclination angle adjustment of the camera 13 is not affected by the attitude of the unmanned aerial vehicle, so that the shooting of the camera 13 can meet the use demand, without re-adjusting the camera 13, avoiding confusion collection target, at the same time ensures the collection efficiency, can adapt to the application of public security business;

[0045] When the unmanned aerial vehicle 1 completes the collection of geographic information data, the base 8 gradually descends until the third piston rod 40 on the base 8 is in contact with the ground, at which time the unmanned aerial vehicle is lowered again, so that the third piston rod 40 on the base 8 compresses the air in the second sealed cavity 37, so that the compressed air enters the third sealed cavity 38 through the connecting pipe 39, so that the fourth piston rod 41 in the third sealed cavity 38 is compressed and shrinks, so that the fourth piston rod 41 is disengaged from the clamping of the fixed cylinder 6, and the restriction of the fifth piston rod 45 is disengaged, so that the fifth piston rod 45 returns under the action of air pressure, so that the fourth sealed cavity 42 sucks the air in the fifth sealed cavity 43 through the second connecting groove 44, so that the sixth piston rod 46 returns, and further so that the sixth piston rod 46 drives the transmission belt 48 to rotate, so that the ball valve 49 on the transmission belt 48 rotates, so that the ball valve 49 blocks the first connecting groove 18, avoiding the movement of the first piston rod 7 affecting the rotation speed of the propeller 28, until the unmanned aerial vehicle is stably landed on the ground, at which time the first piston rod 7 compresses the air in the fixed cylinder 6, according to the above process, the air pressure at the top end of the inner cavity 10 rises, so that the piston plate 12 drives the camera 13 to rotate fully, so that the inclination angle of the camera 13 increases and shrinks into the placing groove 4, achieving the purpose of automatically storing the camera 13, without additional control of the motor, not only avoiding damage to the camera 13, but also further reducing the cost, completing the operation.

[0046] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A geographic information data collection device based on public security business, characterized in that: The invention comprises a machine body (1), wherein a front arm rod (2) and a rear arm rod (3) are installed at both ends of the machine body (1), and a placement groove (4) is opened on the bottom surface of the machine body (1), a universal joint (50) is installed on the top surface of the placement groove (4), a rotating frame (5) is fixedly connected to the bottom end of the universal joint (50), a fixing cylinder (6) is fixedly connected to the bottom surface of the front arm rod (2) and the rear arm rod (3), one end of a first piston rod (7) is slidably sleeved in the fixing cylinder (6), the other end of the first piston rod (7) is fixedly connected to a base (8), and the top end of the fixing cylinder (6) is opened. A guide tube (9) is provided, an inner cavity (10) is provided in the rotating frame (5), a guide groove (11) is provided between the inner cavity (10) and the guide tube (9), a piston plate (12) is slidably sleeved in the inner cavity (10), a camera (13) is fixedly connected to the end of the piston plate (12), a motor (14) is installed on the side wall of the rotating frame (5), a driving gear (15) is fixedly connected to the output end of the motor (14), an outer surface of the driving gear (15) is meshedly connected to a driven gear (16), and the driven gear (16) is fixedly connected to the camera (13); A first sealed chamber (17) is provided in each of the front arm (2) and the rear arm (3), a first connecting groove (18) is communicated between the first sealed chamber (17) and the fixed cylinder (6), and one end of a second piston rod (19) is slidably sleeved in the first sealed chamber (17), and the other end of the second piston rod (19) is meshedly sleeved with a driving roller (20), and one end of a crawler (21) is slidably sleeved on the outer surface of the driving roller (20), and the other end of the crawler (21) is slidably sleeved with a driven roller (22), and an electric motor (23) is installed in each of the front arm (2) and the rear arm (3), and one end of a transmission shaft (24) is fixedly connected to the output end of the electric motor (23), and the other end of the transmission shaft (24) is fixedly connected to a sun gear (25), and the sun gear (25) is fixedly sleeved. ) is meshedly connected to a planetary gear (26) on its outer surface, meshedly connected to an outer gear ring (27) on its outer surface, a propeller (28) is fixedly connected to the top surface of the outer gear ring (27), and a planetary carrier (29) is rotatably connected to the bottom surface of the planetary gear (26), a limiting rod (30) is slidably connected to the outer surface of the planetary carrier (29), and a protrusion (31) is fixedly connected to the bottom surface of the planetary carrier (29), a lifting block (32) is meshedly sleeved on the central axis of the driven roller (22), one end of a compression spring (33) is fixedly connected to the top surface of the lifting block (32), the other end of the compression spring (33) is fixedly connected to a pressure plate (34), a blocking rod (35) is fixedly connected to the top surface of the pressure plate (34), and a nesting (36) is fixedly connected to the end surface of the motor (23); A second sealed chamber (37) is provided in the base (8), a third sealed chamber (38) is provided at the top end of the first piston rod (7), a connecting pipe (39) is provided between the second sealed chamber (37) and the third sealed chamber (38), a third piston rod (40) is slidably sleeved in the second sealed chamber (37), a fourth piston rod (41) is slidably sleeved in the third sealed chamber (38), a fourth sealed chamber (42) and a fifth sealed chamber (43) are provided in the fixed cylinder (6), and the A second connecting groove (44) is connected between the fourth closed chamber (42) and the fifth closed chamber (43); a fifth piston rod (45) is slidably sleeved in the fourth closed chamber (42); one end of a sixth piston rod (46) is slidably sleeved in the fifth closed chamber (43); the other end of the sixth piston rod (46) is provided with an external thread (47); the outer surface of the external thread (47) is engaged with one end of a transmission belt (48); the other end of the transmission belt (48) is fixedly connected to a ball valve (49).

2. The geographic information data collection device based on public security services according to claim 1, characterized in that: Two front arm rods (2) and two rear arm rods (3) are provided, and the two front arm rods (2) and the two rear arm rods (3) are symmetrically arranged with respect to a bisecting plane of the machine body (1); the rotating frame (5) is arranged in a U shape; the camera (13) is located between the rotating frames (5), and the camera (13) is rotatably connected to the rotating frame (5).

3. The geographic information data collection device based on public security services according to claim 1, characterized in that: Four fixed cylinders (6) are provided, and the ends of the conduit (9) are respectively connected to the four fixed cylinders (6). The inner cavity (10) is provided in a semicircular shape, and the piston plate (12) is provided in an L-shape, and the piston plate (12) extends outside the rotating frame (5), and a sealing ring is provided between the piston plate (12) and the rotating frame (5).

4. The geographic information data collection device based on public security services according to claim 1, characterized in that: The bottom end of the second piston rod (19) is arranged in a polygonal column shape, the active roller (20), the crawler track (21) and the driven roller (22) are all sleeved with the front arm rod (2), the active roller (20), the crawler track (21) and the driven roller (22) are all sleeved with the rear arm rod (3), and the limiting rod (30) is fixed to the inner surfaces of the front arm rod (2) and the rear arm rod (3).

5. The geographic information data collection device based on public security services according to claim 1, characterized in that: The blocking rod (35) is in contact with the protrusion (31), the nest (36) is sleeved with the transmission shaft (24), the nest (36) is engaged with the pressure plate (34), and the nest (36) is engaged with the lifting block (32), and the thread direction of the lifting block (32) in the front arm rod (2) is opposite to the thread direction of the lifting block (32) in the rear arm rod (3).

6. The geographic information data collection device based on public security services according to claim 1, characterized in that: The bottom end of the third piston rod (40) extends outside the base (8), the end of the fourth piston rod (41) is engaged with the bottom wall of the fixed cylinder (6), and the fourth piston rod (41) is in contact with the fifth piston rod (45). The ball valve (49) is rotatably sleeved with the first connecting groove (18), and the transmission belt (48) is sleeved with the fixed cylinder (6).

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