Unmanned aerial vehicle distance measuring device for ground survey

Abstract

The utility model discloses an unmanned aerial vehicle distance measuring device for ground survey. The unmanned aerial vehicle distance measuring device comprises an unmanned aerial vehicle body, a supporting holder is fixedly mounted on a mounting part at the lower end of the unmanned aerial vehicle body; a laser radar is fixedly mounted on a mounting part, far away from the unmanned aerial vehicle body, of the supporting holder; a heat dissipation mechanism is arranged on the surface of one end of the laser radar; a hollow bag is arranged in the heat dissipation mechanism; and oil discharge grooves are formed in the shell on the two sides of the laser radar. Through mutual cooperation of a heat dissipation mechanism, a flow guide pipe, a hollow bag and other structures, the heat dissipation mechanism continuously presses and cools the hollow bag, then cooling lubricating oil in the hollow bag and the oil discharging groove flows and exchanges, and then the cooling lubricating oil is continuously cooled; and the cooled cooling lubricating oil can perform heat absorption and heat dissipation treatment on the laser radar, so that the problems of shortened ranging range, inaccurate data, even damage and the like caused by high temperature are greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) ranging technology, specifically a UAV ranging device for ground surveying. Background Technology

[0002] A ground surveying drone ranging device is a device that transmits signals and receives echoes to quickly collect dense point data on the ground, reconstruct the three-dimensional shape of the terrain, and thus accurately obtain spatial data such as distance, position, and elevation of the ground and target objects, which facilitates subsequent terrain modeling, construction and other operations.

[0003] Current ground surveying drone ranging devices generally use drones carrying lidar to complete ranging. However, when lidar needs to work for a long time in hot weather, it can cause internal overheating, which can affect the lidar's laser diode and receiving sensor, leading to problems such as shortened ranging range and inaccurate data. In severe cases, it can even damage the equipment. Therefore, improvements are needed. Utility Model Content

[0004] This invention provides a drone ranging device for ground surveying. By combining a heat dissipation mechanism, a guide pipe, and a hollow bladder, it continuously cools the cooling lubricating oil in the oil drain tank, thereby cooling the laser pointer radar and reducing problems such as shortened ranging range and inaccurate data caused by high temperatures.

[0005] To achieve the above objectives, a UAV ranging device for ground surveying is provided, comprising a UAV body; a support gimbal is fixedly mounted on the lower mounting portion of the UAV body; a lidar is fixedly mounted on the mounting portion of the support gimbal away from the UAV body; a heat dissipation mechanism is provided on one end surface of the lidar; a hollow bladder is provided inside the heat dissipation mechanism; oil drain grooves are opened inside the outer shells on both sides of the lidar; a guide pipe is provided inside the oil drain groove; the end of the guide pipe near the hollow bladder passes through the heat dissipation mechanism and is fixedly connected to the hollow bladder; an isolation plate is fixedly connected to the inside of the hollow bladder; the heat dissipation mechanism is located near the lidar detection window. A cleaning mechanism is provided on one side, and the cleaning mechanism cooperates with the side of the hollow bladder near the isolation plate; the heat dissipation mechanism includes a mounting bracket, a rotating shaft, fan blades, and a pressing assembly; the mounting bracket is fixedly connected to the surface of the lidar; the rotating shaft is rotatably connected to the center of the end of the mounting bracket away from the lidar; a motor is fixedly installed on the side of the mounting bracket away from the lidar, and the output end of the motor is fixedly connected to one end of the rotating shaft; the fan blades are fixedly connected to the outer surface of the rotating shaft, and the fan blades are arranged in a plurality of evenly distributed rings at equal angles; the pressing assembly is located inside the mounting bracket, and the rotating shaft cooperates with the pressing assembly; the hollow bladder and the isolation plate are made of silicone material.

[0006] According to the aforementioned UAV ranging device for ground surveying, the pressing assembly includes a drive plate, a limiting sleeve, a support base, a moving disk, a contact block, a pressing disk, and a limiting post; the drive plate is fixedly connected to the end of the rotating shaft away from the motor; the limiting sleeve is disposed on the outside of the drive plate and is fixedly connected to the surface of the lidar; the hollow bladder is fixedly connected to the center of the inner bottom surface of the limiting sleeve; the guide tube passes through the limiting sleeve and is fixedly connected to the hollow bladder.

[0007] According to the aforementioned UAV ranging device for ground surveying, the support base is sleeved on the outside of the hollow bladder, and the support base is fixedly connected to the bottom surface of the limiting sleeve; the movable disk is slidably connected to the limiting sleeve; the contact block is fixedly connected to the side of the movable disk away from the support base, and a plurality of contact blocks are provided and correspond to each end of the drive plate; the two sides of the contact block are set at bevels; the drive plate contacts the side of the movable disk near the contact block.

[0008] According to the aforementioned UAV ranging device for ground surveying, the limiting post is fixed to the surface of the support base, and the limiting post is configured as a plurality of posts and evenly distributed; the end of the limiting post away from the support base passes through the moving disk and is parallel to the side of the moving disk away from the support base.

[0009] According to the aforementioned UAV ranging device for ground surveying, the pressing plate is fixedly connected to the center of the side of the movable plate near the support base; a spring is provided on the side of the support base and the movable plate that are close to each other, and the two ends of the spring are respectively fixedly connected to the side of the support base and the movable plate that are close to each other.

[0010] According to the aforementioned UAV ranging device for ground surveying, the cleaning mechanism includes an output pipe and an air blowing head; the air blowing head is disposed on the side of the lidar near the detection window; the output pipe is configured as a plurality of pipes and is fixedly connected to the air blowing head; the end of the output pipe away from the air blowing head passes through a limiting sleeve and is fixedly connected to the side of the hollow bladder near the isolation plate.

[0011] According to the aforementioned UAV ranging device for ground surveying, the outer surface of the guide tube is provided with small holes, and the small holes are arranged in a plurality of them and evenly distributed along the guide tube; a heat sink is fixed to the side of the hollow bladder away from the lidar; and the oil drain is filled with cooling lubricating oil.

[0012] The beneficial effects of this utility model are:

[0013] 1. By setting up a heat dissipation mechanism, a guide pipe, and a hollow bladder, the heat dissipation mechanism continuously presses and cools the hollow bladder, allowing the cooling lubricating oil inside the hollow bladder and the oil drain tank to flow and exchange, thereby continuously cooling the cooling lubricating oil. The cooled lubricating oil then absorbs and dissipates heat for the lidar, significantly reducing problems such as shortened ranging range, inaccurate data, or even damage caused by high temperatures.

[0014] 2. By setting up the interoperability of structures such as the isolation plate, output tube and air blowing head, when the hollow bladder is squeezed, the air isolated by the isolation plate will be squeezed out. The squeezed air will flow along the output tube to the air blowing head, which will blow air onto the detection window of the lidar to clean up dust and impurities, reducing the problem of dust and impurities blocking the lidar laser beam and receiving echo signals.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the overall structure of a UAV ranging device for ground surveying according to the present invention.

[0018] Figure 2 This is a bottom-view schematic diagram of a UAV ranging device for ground surveying according to the present invention;

[0019] Figure 3 This is a schematic diagram illustrating the cooperative relationship between the lidar and the cleaning mechanism of a UAV ranging device for ground surveying according to this utility model.

[0020] Figure 4 This is a side cross-sectional view of the lidar structure of a UAV ranging device for ground surveying according to the present invention;

[0021] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 This is a schematic diagram of the overall structure of the mounting frame for a UAV ranging device used for ground surveying according to the present invention;

[0023] Figure 7 This is a schematic diagram of the structural relationship between the hollow bladder and the heat sink of a UAV ranging device for ground surveying according to the present invention.

[0024] Figure 8This is a schematic diagram of the structural relationship between the moving disk and the contact block of a UAV ranging device for ground surveying according to the present invention.

[0025] Figure 9 This is a schematic diagram of the structural relationship between the hollow bladder and the isolation plate of a UAV ranging device for ground surveying according to this utility model.

[0026] Legend:

[0027] 1. UAV body; 2. LiDAR; 3. Heat dissipation mechanism; 4. Oil drain tank; 5. Flow guide pipe; 6. Cleaning mechanism; 7. Hollow bladder; 8. Heat sink; 9. Isolation plate; 10. Support gimbal; 301. Mounting bracket; 302. Rotating shaft; 303. Fan blade; 304. Pressing assembly; 30401. Drive board; 30402. Limiting sleeve; 30403. Support base; 30404. Moving disk; 30405. Contact block; 30406. Pressing disk; 30407. Limiting post; 601. Output pipe; 602. Air blowing head. Detailed Implementation

[0028] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0029] Reference Figures 1 to 9This utility model discloses a UAV ranging device for ground surveying, comprising a UAV body 1; a support gimbal 10 is fixedly mounted on the lower end of the UAV body 1; a lidar 2 is fixedly mounted on the support gimbal 10 away from the UAV body 1; a heat dissipation mechanism 3 is provided on one end surface of the lidar 2; a hollow bladder 7 is provided inside the heat dissipation mechanism 3; oil drain grooves 4 are provided inside the outer shells on both sides of the lidar 2; a guide pipe 5 is provided inside the oil drain groove 4; one end of the guide pipe 5 near the hollow bladder 7 passes through the heat dissipation mechanism 3 and is fixedly connected to the hollow bladder 7; an isolation plate 9 is fixedly connected to the inside of the hollow bladder 7; a cleaning mechanism 6 is provided on the side of the heat dissipation mechanism 3 near the detection window of the lidar 2, and the cleaning mechanism 6 is connected to the hollow bladder 7. The hollow sac 7 is fitted to the side of the isolation plate 9; the heat dissipation mechanism 3 includes a mounting bracket 301, a rotating shaft 302, fan blades 303, and a pressing assembly 304; the mounting bracket 301 is fixedly connected to the surface of the lidar 2; the rotating shaft 302 is rotatably connected to the center of the end of the mounting bracket 301 away from the lidar 2; a motor is fixedly mounted on the side of the mounting bracket 301 away from the lidar 2, and the output end of the motor is fixedly connected to one end of the rotating shaft 302; the fan blades 303 are fixedly connected to the outer surface of the rotating shaft 302, and the fan blades 303 are arranged in a plurality of evenly distributed in a ring at equal angles; the pressing assembly 304 is located inside the mounting bracket 301, and the rotating shaft 302 is fitted to the pressing assembly 304; the hollow sac 7 and the isolation plate 9 are made of silicone. The hollow bladder 7 is pressed and cooled by the heat dissipation mechanism 3, which allows the cooling lubricating oil inside the hollow bladder 7 and the oil drain 4 to flow and exchange, thereby continuously cooling the cooling lubricating oil. The cooled lubricating oil will absorb and dissipate heat for the lidar 2. When the hollow bladder 7 is pressed, it will be isolated by the isolation plate 9, and the cleaning mechanism 6 will blow air into the detection window of the lidar 2 to clean dust and impurities. By setting the fan blade 303 and the rotating shaft 302 to cooperate, the rotating shaft 302 drives the fan blade 303 to rotate, which accelerates the air flow and achieves rapid cooling of the hollow bladder 7.

[0030] The pressing assembly 304 includes a drive plate 30401, a limiting sleeve 30402, a support base 30403, a moving disk 30404, a contact block 30405, a pressing disk 30406, and a limiting post 30407. The drive plate 30401 is fixedly connected to the end of the rotating shaft 302 away from the motor. The limiting sleeve 30402 is located on the outside of the drive plate 30401 and is fixedly connected to the surface of the lidar 2. The hollow bladder 7 is fixedly connected to the center of the inner bottom surface of the limiting sleeve 30402. The guide tube 5 passes through the limiting sleeve 30402 and is fixedly connected to the hollow bladder 7. By setting the positional relationship between the hollow bladder 7 and the limiting sleeve 30402, when the pressing disk 30406 moves downward, it will contact the center of the hollow bladder 7, making the deformation of the hollow bladder 7 more uniform and enhancing the suction force when the hollow bladder 7 deforms.

[0031] A support base 30403 is sleeved on the outside of the hollow bladder 7, and the support base 30403 is fixedly connected to the bottom surface of the limiting sleeve 30402; a movable disk 30404 is slidably connected to the limiting sleeve 30402; a contact block 30405 is fixedly connected to the side of the movable disk 30404 away from the support base 30403, and several contact blocks 30405 are provided and correspond to each end of the drive plate 30401; the two sides of the contact block 30405 are set at bevels; the drive plate 30401 contacts the side of the movable disk 30404 near the contact block 30405. When the drive plate 30401 rotates, it will contact the bevel of the contact block 30405 and slide along the bevel, thereby causing the contact block 30405 to move under force, and causing the contact block 30405 to push the movable disk 30404 to move.

[0032] The limiting post 30407 is fixedly connected to the surface of the support base 30403, and several limiting posts 30407 are evenly distributed. The end of the limiting post 30407 away from the support base 30403 passes through the movable disk 30404 and is parallel to the side of the movable disk 30404 away from the support base 30403. Through the cooperation between the limiting post 30407 and the movable disk 30404, the limiting post 30407 limits the movable disk 30404, allowing the movable disk 30404 to move only along the limiting post 30407.

[0033] The pressing plate 30406 is fixedly connected to the center of the movable plate 30404 near the support base 30403. A spring is provided on the side of the support base 30403 and the movable plate 30404 that are close to each other, with both ends of the spring fixedly connected to the side of the support base 30403 and the movable plate 30404 respectively. By providing the spring, when the movable plate 30404 moves towards the support base 30403, the spring is compressed; when there is no external force on the movable plate 30404, the spring will push the movable plate 30404 back to its original position.

[0034] The cleaning mechanism 6 includes an output pipe 601 and an air blowing head 602. The air blowing head 602 is located on the side of the lidar 2 near the detection window. Several output pipes 601 are provided and are fixedly connected to the air blowing heads 602. The end of the output pipe 601 away from the air blowing head 602 passes through the limiting sleeve 30402 and is fixedly connected to the side of the hollow bladder 7 near the isolation plate 9. By compressing and deforming the hollow bladder 7, airflow is delivered through the output pipe 601 to the air blowing head 602, allowing the air blowing head 602 to blow air onto the detection window of the lidar 2 to clean impurities and dust.

[0035] Small holes are formed on the outer surface of the guide tube 5, and several holes are evenly distributed along the guide tube 5; a heat sink 8 is fixed to the side of the hollow bladder 7 away from the lidar 2; the oil drain 4 is filled with cooling lubricating oil. By setting the heat sink 8 and the hollow bladder 7 in cooperation, the contact area with air is increased, and the heat dissipation of the hollow bladder 7 is accelerated.

[0036] Working principle: When ranging is required, the UAV body 1 can be started, and the UAV body 1 carrying the lidar 2 can fly into the air to perform ranging. If the weather is too hot, the motor will be started, and the motor will drive the rotating shaft 302 to rotate in the forward direction. When the rotating shaft 302 rotates, it will drive the fan blade 303 to rotate, and the fan blade 303 will blow air to the hollow bag 7 and the heat sink 8, thereby cooling the cooling lubricating oil inside the hollow bag 7.

[0037] When the rotating shaft 302 rotates, it also drives the drive plate 30401 to rotate, causing the drive plate 30401 to contact the inclined angles on both sides of the contact block 30405 and move along the inclined angles. At this time, the contact block 30405 will be subjected to downward force under the influence of the inclined angles. Furthermore, the limiting post 30407 further limits the movable disk 30404, which is fixed to the contact block 30405. Therefore, the contact block 30405 can only push the movable disk 30404 to move towards the hollow bladder 7. The moving disk 30404 will drive the pressing disk 30406 to move simultaneously, so that the pressing disk 30406 comes into contact with the hollow bladder 7 and presses the hollow bladder 7. When the hollow bladder 7 is pressed, it will deform because it is made of silicone. When the drive plate 30401 separates from the contact block 30405, the spring will push the moving disk 30404 to reset the pressing disk 30406. At this time, the hollow bladder 7 will return to its original shape under the influence of its own elasticity.

[0038] During the periodic pressing of the hollow bladder 7 by the pressing plate 30406 to deform it, the hollow bladder 7 will cause some of the internal cooling lubricating oil to flow. The flowing cooling lubricating oil will pass through the guide pipe 5 and flow into the oil drain 4 through the small hole on the surface of the guide pipe 5. At the same time, some of the cooling lubricating oil inside the oil drain 4 will also enter the guide pipe 5 through the small hole under the air pressure generated by the deformation of the hollow bladder 7, and flow into the hollow bladder 7. Under the rotation of the fan blade 303, it will dissipate heat, thereby reducing the temperature of the cooling lubricating oil, and then allowing the cooling lubricating oil to complete the heat dissipation of the lidar 2.

[0039] When the hollow bladder 7 is pressed, it will also cause the air inside the hollow bladder 7, which is isolated by the isolation plate 9, to flow along the output pipe 601. The flowing air will enter the interior of the air blowing head 602 and blow air from the air blowing head 602 to the window surface of the lidar 2 to clean the window surface of the lidar 2 and reduce the problem of blocking the laser beam emission and receiving echo signals.

[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A UAV ranging device for ground surveying, characterized in that, The system includes a drone body (1); a support gimbal (10) is fixedly installed on the lower mounting part of the drone body (1); a laser radar (2) is fixedly installed on the mounting part of the support gimbal (10) away from the drone body (1); a heat dissipation mechanism (3) is provided on one end surface of the laser radar (2); a hollow bladder (7) is provided inside the heat dissipation mechanism (3); oil drain grooves (4) are opened inside the outer shells on both sides of the laser radar (2); a guide pipe (5) is provided on the inner side of the oil drain groove (4); the end of the guide pipe (5) near the hollow bladder (7) passes through the heat dissipation mechanism (3) and is fixedly connected to the hollow bladder (7); an isolation plate (9) is fixedly connected to the inner side of the hollow bladder (7); a cleaning mechanism (6) is provided on the side of the heat dissipation mechanism (3) near the detection window of the laser radar (2), and the cleaning mechanism (6) and the hollow bladder (7) near the isolation plate (9) are connected. The heat dissipation mechanism (3) includes a mounting bracket (301), a rotating shaft (302), fan blades (303), and a pressing assembly (304); the mounting bracket (301) is fixedly connected to the surface of the laser radar (2); the rotating shaft (302) is rotatably connected to the center of the end of the mounting bracket (301) away from the laser radar (2); a motor is fixedly installed on the side of the mounting bracket (301) away from the laser radar (2), and the output end of the motor is fixedly connected to one end of the rotating shaft (302); the fan blades (303) are fixedly connected to the outer surface of the rotating shaft (302), and the fan blades (303) are arranged in a plurality of evenly distributed in a ring at equal angles; the pressing assembly (304) is arranged inside the mounting bracket (301), and the rotating shaft (302) cooperates with the pressing assembly (304); the hollow bladder (7) and the isolation plate (9) are made of silicone.

2. The UAV ranging device for ground surveying according to claim 1, characterized in that, The pressing assembly (304) includes a drive plate (30401), a limiting sleeve (30402), a support base (30403), a moving disk (30404), a contact block (30405), a pressing disk (30406), and a limiting post (30407); the drive plate (30401) is fixedly connected to the end of the rotating shaft (302) away from the motor; the limiting sleeve (30402) is located on the outside of the drive plate (30401), and the limiting sleeve (30402) is fixedly connected to the surface of the laser radar (2); the hollow bladder (7) is fixedly connected to the center of the inner bottom surface of the limiting sleeve (30402); the guide tube (5) passes through the limiting sleeve (30402) and is fixedly connected to the hollow bladder (7).

3. The UAV ranging device for ground surveying according to claim 2, characterized in that, The support base (30403) is sleeved on the outside of the hollow bladder (7), and the support base (30403) is fixedly connected to the bottom surface of the limiting sleeve (30402); the movable disk (30404) is slidably connected to the limiting sleeve (30402); the contact block (30405) is fixedly connected to the side of the movable disk (30404) away from the support base (30403), and the contact block (30405) is set in several pieces and corresponds to each end of the drive plate (30401); the two sides of the contact block (30405) are set at bevels; the drive plate (30401) and the side of the movable disk (30404) close to the contact block (30405) are in contact.

4. The UAV ranging device for ground surveying according to claim 2, characterized in that, The limiting post (30407) is fixed to the surface of the support base (30403), and the limiting post (30407) is set in a plurality of evenly distributed; the end of the limiting post (30407) away from the support base (30403) passes through the moving disk (30404) and is parallel to the side of the moving disk (30404) away from the support base (30403).

5. A UAV ranging device for ground surveying according to claim 2, characterized in that, The pressing plate (30406) is fixedly connected to the center of the movable plate (30404) near the support base (30403); a spring is provided on the side of the support base (30403) and the movable plate (30404) that are close to each other, and the two ends of the spring are fixedly connected to the side of the support base (30403) and the movable plate (30404) that are close to each other.

6. A UAV ranging device for ground surveying according to claim 2, characterized in that, The cleaning mechanism (6) includes an output pipe (601) and an air blowing head (602); the air blowing head (602) is located on the side of the lidar (2) near the detection window; the output pipe (601) is configured in several parts and is fixedly connected to the air blowing head (602); the end of the output pipe (601) away from the air blowing head (602) passes through the limiting sleeve (30402) and is fixedly connected to the side of the hollow bladder (7) near the isolation plate (9).

7. The UAV ranging device for ground surveying according to claim 1, characterized in that, The outer surface of the guide tube (5) is provided with small holes, and the small holes are set in a number and evenly distributed along the guide tube (5); the hollow bladder (7) is fixed with a heat sink (8) on the side away from the laser radar (2); the oil drain (4) is filled with cooling lubricating oil.

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