Unmanned aerial vehicle ejection boom, launching device and pool test system

Abstract

The invention relates to the field of launchers launched by catapults or tracks, in particular to an unmanned aerial vehicle catapult boom, a launcher and a pool test system. The problem that in the prior art, the launching angle and the launching position of an unmanned aerial vehicle are limited, and the requirement for multi-attitude and multi-position launching cannot be met is solved. The unmanned aerial vehicle ejection arm frame comprises guide columns which are arranged in a left-right spaced mode, a centering supporting rod and an angle adjusting supporting rod are installed between the guide columns, the centering supporting rod is close to the front portion, the angle adjusting supporting rod is close to the rear portion, and the ends of the supporting rods are matched with the guide columns in a guiding mode. The pitch angle of the ejection arm is adjusted through the vertical position difference of the centering supporting rod and the angle adjusting supporting rod, and a supporting rod lifting driving device is arranged between the supporting rod and the corresponding guide column. Therefore, the unmanned aerial vehicle can be launched at any angle in a wide-range angle of pitching and pitching, and can also be launched at different heights, and the requirements of multi-attitude, multi-position and multi-launching-speed launching of the unmanned aerial vehicle in the test process are met.

Description

Technical Field

[0001] The invention relates to the field of launching devices using catapults or rails, and in particular to an unmanned aerial vehicle (UAV) ejection arm, a launching device and a water pool test system. Background Art

[0002] With the development of the economy, fixed-wing UAVs have been widely used in many fields such as military and civil, especially in aerial photography, environmental monitoring, reconnaissance and patrol, plant protection, entertainment, field search and rescue, low-altitude search and delivery, etc.

[0003] During the development of a certain type of fixed-wing amphibious UAV, it is necessary to measure the relevant performance of the UAV when entering or exiting the water at different speeds and positive and negative pitch angles through simulated water pool tests. The corresponding UAV launch device is required to be able to adjust the launch angle within a range of nearly 180° from quasi-vertical upwards under the water surface to quasi-vertical downwards from the water surface, as well as stepless adjustment of the ejection speed within the set range. Currently, there is no existing technology that can meet the above requirements.

[0004] The Chinese invention patent with publication number CN104803006A discloses a UAV ejection take-off device, which includes a base, a launch slide and an ejection power system. The support seat is fixed on a platform or a launch vehicle, the tail of the launch slide is hinged with the support seat, and the middle part is adjusted by a retractable structure to adjust the relative angle between the launch slide and the support seat. The launch slide is provided with an ejection seat, and the ejection power system includes a cylinder arranged on the side of the slide mechanism, the piston end of the cylinder is fixedly connected with a movable pulley assembly, and a fixed pulley assembly is arranged on the front side of the movable pulley assembly. The traction rope passes through the movable pulley assembly and the fixed pulley assembly and bypasses from the front of the launch slide to finally connect with the front end of the UAV ejection seat. The retractable assembly is a worm gear assembly. When the worm gear and the worm are matched, the worm moves linearly to adjust the angle of the launch slide relative to the support seat. Among them, the retractable structure can adjust the angle of the launch slide within a certain range, but the launch slide can only adjust the angle within the range of elevation relative to the support seat with its hinge point as the center of the circle. In this way, the launch angle and launch position of the drone are limited, and the requirements of multi-posture and multi-position launch cannot be met. In addition, stepless adjustment of the ejection speed cannot be achieved. Summary of the invention

[0005] The purpose of the present invention is to provide a UAV ejection arm to solve the problem that the launch angle and launch position of the UAV in the prior art are limited, and the demand for multi-posture and multi-position launch cannot be achieved. The purpose of the present invention is also to provide a UAV launching device to solve the problem that the launch angle and launch position of the UAV in the prior art are limited, and the demand for multi-posture and multi-position launch cannot be achieved. The purpose of the present invention is also to provide a UAV water pool test system to solve the problem that the launch angle and launch position of the UAV in the prior art are limited, and the demand for multi-posture and multi-position launch cannot be achieved.

[0006] In order to solve the above technical problems, the UAV ejection arm of the present invention adopts the following technical solutions: The unmanned aerial vehicle ejection arm frame includes guide columns arranged at intervals on the left and right, a centering support rod and an angle adjustment support rod are horizontally installed between the guide columns, one of the centering support rod and the angle adjustment support rod is arranged at intervals in front and the other is arranged in the back, the adjacent ends of the centering support rod and the angle adjustment support rod are installed on the same guide column and the ends are matched with the corresponding guide column guides, an ejection arm is installed through the centering support rod and the angle adjustment support rod, the ejection arm forms a swing arm with the centering support rod as the swing center, an angle adjustment long hole matched with the angle adjustment support rod guide is also arranged on the ejection arm along the length direction, the pitch angle of the ejection arm can be adjusted by the difference between the upper and lower positions of the centering support rod and the angle adjustment support rod, and an angle adjustment support rod lifting drive device and a centering support rod lifting drive device are respectively arranged between the angle adjustment support rod and the centering support rod and the corresponding guide columns.

[0007] Furthermore, the angle adjustment support rod lifting drive device and the centering support rod lifting drive device are both hoisting devices, the power components of the hoisting devices are installed on the top of the corresponding guide columns, and their lifting ropes are correspondingly connected to the angle adjustment support rod and the centering support rod.

[0008] Furthermore, an angle adjusting support rod limiting mechanism and a centering support rod limiting mechanism are provided on any of the guide columns, the angle adjusting support rod limiting mechanisms on the two guide columns are symmetrically arranged on the left and right, and the centering support rod limiting mechanisms on the two guide columns are also symmetrically arranged on the left and right. The angle adjusting support rod limiting mechanism and the centering support rod limiting mechanism include a baffle rod movably cooperated with the guide column where they are located, and the baffle rod has an avoidance position for avoiding the corresponding support rod and a blocking position for blocking the corresponding support rod from moving upward in its active stroke.

[0009] Furthermore, the baffle rod is hingedly assembled on the guide column, a reciprocating drive rod is connected to one end of the baffle rod, all baffle rods of the same limiting mechanism are connected to the same reciprocating drive rod to form a multi-linked quadrilateral mechanism, and a limiting drive device is connected to the reciprocating drive rod.

[0010] The UAV ejection arm of the present invention proposes a brand-new technical solution, which adjusts the pitch angle of the ejection arm installed on the support rod by adjusting the height difference of the front and rear support rods along the guide column that cooperate with the guide column. Therefore, the ejection arm is not limited by the ejection arm support structure in the prior art when adjusting the angle, and can be pitched in a wide range from positive elevation to negative elevation within the range allowed by the guide column; of course, the height position of the ejection arm can also be adjusted by running the front and rear support rods as a whole to different heights of the guide column, so that the UAV can be launched at different heights. In this way, the demand for multi-attitude and multi-position launching of the UAV within a large adjustable range is met.

[0011] Another aspect of the present invention further provides a UAV launch device, which adopts the following technical solution: The UAV launching device comprises a UAV ejection arm frame, an ejection pulley and an ejection power system. The UAV ejection arm frame comprises guide columns arranged at intervals on the left and right sides, a centering support rod and an angle adjustment support rod are horizontally installed between the guide columns, one of the centering support rod and the angle adjustment support rod is arranged at intervals in front and the other in the back, the adjacent ends of the centering support rod and the angle adjustment support rod are installed on the same guide column and the ends are guided and matched with the corresponding guide column, an ejection arm is installed through the centering support rod and the angle adjustment support rod, the ejection arm forms a swing arm with the centering support rod as the swing center, an angle adjustment long hole guided and matched with the angle adjustment support rod is also arranged on the ejection arm along the length direction, the pitch angle of the ejection arm can be adjusted by the difference between the upper and lower positions of the centering support rod and the angle adjustment support rod, an angle adjustment support rod lifting drive device and a centering support rod lifting drive device are respectively arranged between the angle adjustment support rod and the centering support rod and the corresponding guide columns, and the ejection pulley is installed on the ejection arm in the form of a sliding pair and is connected to the ejection power system at the same time.

[0012] Furthermore, the angle adjustment support rod lifting drive device and the centering support rod lifting drive device are both hoisting devices, the power components of the hoisting devices are installed on the top of the corresponding guide columns, and their lifting ropes are correspondingly connected to the angle adjustment support rod and the centering support rod.

[0013] Furthermore, an angle adjusting support rod limiting mechanism and a centering support rod limiting mechanism are provided on any of the guide columns, the angle adjusting support rod limiting mechanisms on the two guide columns are symmetrically arranged on the left and right, and the centering support rod limiting mechanisms on the two guide columns are also symmetrically arranged on the left and right. The angle adjusting support rod limiting mechanism and the centering support rod limiting mechanism include a baffle rod movably cooperated with the guide column where they are located, and the baffle rod has an avoidance position for avoiding the corresponding support rod and a blocking position for blocking the corresponding support rod from moving upward in its active stroke.

[0014] Furthermore, the baffle rod is hingedly assembled on the guide column, a reciprocating drive rod is connected to one end of the baffle rod, all baffle rods of the same limiting mechanism are connected to the same reciprocating drive rod to form a multi-linked quadrilateral mechanism, and a limiting drive device is connected to the reciprocating drive rod.

[0015] Furthermore, the ejection power system is a traction rope power system, which includes a traction rope, a pulley bracket, a fixed pulley, a movable pulley, a tension compensation drum and an ejection drive device. The traction rope is passed around the fixed pulley and the movable pulley, one end of the traction rope is connected to the ejection pulley, and the other end of the traction rope is wound on the tension compensation drum. The fixed pulley is connected to the pulley bracket, and the movable pulley is connected to the ejection drive device.

[0016] Furthermore, the ejection drive device is a linear actuator.

[0017] Furthermore, the linear actuator is a servo electric cylinder and a servo drive control component thereof.

[0018] The UAV launch device of the present invention proposes a brand-new technical solution, which adjusts the pitch angle of the ejection arm installed on the support rod by adjusting the height difference of the front and rear support rods along the guide rod that cooperate with the guide rod. Therefore, the ejection arm is not limited by the ejection arm support structure in the prior art when adjusting the angle, and can be pitched in a wide range from positive elevation to negative elevation within the range allowed by the guide rod; of course, the height position of the ejection arm can also be adjusted by the front and rear support rods running as a whole to different heights of the guide rod, so that the UAV can be launched at different heights; in addition, by adjusting the speed of the ejection power system outputting power, especially adjusting the running speed of the servo-driven linear actuator, the ejection speed of the UAV can also be adjusted steplessly. Thus, the requirements for launching the UAV in multiple postures, multiple positions, and multiple firing rates within a large adjustable range are met.

[0019] Another aspect of the present invention further provides a UAV water pool test system, which adopts the following technical solutions: The UAV water pool test system comprises a water pool and a UAV launch device arranged on the water pool, wherein the UAV launch device comprises a UAV ejection arm, an ejection pulley and an ejection power system, wherein the UAV ejection arm comprises left and right guide columns arranged at intervals, wherein a centering support rod and an angle adjustment support rod are horizontally installed between the guide columns, wherein one of the centering support rod and the angle adjustment support rod is arranged at intervals forward and the other is arranged at intervals backward, wherein the adjacent ends of the centering support rod and the angle adjustment support rod are both installed on the same guide column and the ends are matched with the corresponding guide column guides, and the centering support rod and the angle adjustment support rod are used to carry out the ejection of the UAV. The support rod is equipped with an ejection arm, which forms a swing arm with the centering support rod as the swing center. An angle adjustment long hole is also arranged on the ejection arm along the length direction to cooperate with the guide of the angle adjustment support rod. The pitch angle of the ejection arm can be adjusted by the difference between the upper and lower positions of the centering support rod and the angle adjustment support rod. An angle adjustment support rod lifting drive device and a centering support rod lifting drive device are respectively arranged between the angle adjustment support rod and the centering support rod and the corresponding guide columns. The ejection pulley is installed on the ejection arm in the form of a sliding pair and is connected to the ejection power system at the same time.

[0020] Furthermore, the angle adjustment support rod lifting drive device and the centering support rod lifting drive device are both hoisting devices, the power components of the hoisting devices are installed on the top of the corresponding guide columns, and their lifting ropes are correspondingly connected to the angle adjustment support rod and the centering support rod.

[0021] Furthermore, an angle adjusting support rod limiting mechanism and a centering support rod limiting mechanism are provided on any of the guide columns, the angle adjusting support rod limiting mechanisms on the two guide columns are symmetrically arranged on the left and right, and the centering support rod limiting mechanisms on the two guide columns are also symmetrically arranged on the left and right. The angle adjusting support rod limiting mechanism and the centering support rod limiting mechanism include a baffle rod movably cooperated with the guide column where they are located, and the baffle rod has an avoidance position for avoiding the corresponding support rod and a blocking position for blocking the corresponding support rod from moving upward in its active stroke.

[0022] Furthermore, the baffle rod is hingedly assembled on the guide column, a reciprocating drive rod is connected to one end of the baffle rod, all baffle rods of the same limiting mechanism are connected to the same reciprocating drive rod to form a multi-linked quadrilateral mechanism, and a limiting drive device is connected to the reciprocating drive rod.

[0023] Furthermore, the ejection power system is a traction rope power system, which includes a traction rope, a pulley bracket, a fixed pulley, a movable pulley, a tension compensation drum and an ejection drive device. The traction rope is passed around the fixed pulley and the movable pulley, one end of the traction rope is connected to the ejection pulley, and the other end of the traction rope is wound on the tension compensation drum. The fixed pulley is connected to the pulley bracket, and the movable pulley is connected to the ejection drive device.

[0024] Furthermore, the ejection drive device is a linear actuator.

[0025] Furthermore, the linear actuator is a servo electric cylinder and a servo drive control component thereof.

[0026] Furthermore, the two guide columns are installed on a bridge spanning the pool in a pitchable manner through their respective middle parts, and a pitch driving device for driving the two guide columns to move synchronously is provided between the bridge and the guide columns.

[0027] Furthermore, guide rails and positioning mechanisms are provided on both sides of the water pool, the bridge frame can move forward and backward on the water pool along the guide rails and be positioned, and the ejection power system is installed on the bridge frame.

[0028] The UAV pool test system of the present invention proposes a brand-new technical solution, which adjusts the pitch angle of the ejection arm installed on the support rod by adjusting the height difference of the front and rear support rods along the guide rods that cooperate with the guide rods. Therefore, the ejection arm is not limited by the ejection arm support structure in the prior art when adjusting the angle, and can be pitched in a wide range from positive elevation angle to negative elevation angle within the range allowed by the guide rod; of course, the height position of the ejection arm can also be adjusted by the front and rear support rods running as a whole to different heights of the guide rods, so that the UAV can be launched at different heights; In addition, by adjusting the speed of the ejection power system outputting power, especially adjusting the running speed of the servo-driven linear actuator, the ejection speed of the UAV can also be adjusted steplessly; at the same time, the two guide columns are installed on a bridge that can span the test pool through their respective middle parts, and a pitch drive device is set between the bridge and the guide column, so that the ejection arm can be launched at any pitch angle in a wider range from quasi-vertical upward underwater to quasi-vertical downward above water. Furthermore, the bridge can move forward and backward on the pool along the guide rail, so that the UAV can be launched in a larger space. In this way, the needs of launching UAVs in multiple postures, multiple positions, and multiple firing rates within a larger adjustable range are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the rear structure of the UAV pool test system of the present invention; Figure 2 for Figure 1 Schematic diagram of the front structure; Figure 3 for Figure 1 Another schematic diagram of the front structure, in which the drone and one side guide column are hidden; Figure 4 for Figure 3 A schematic diagram of a partial enlarged view of the center A; Figure 5 It is a schematic diagram of the structure for installing the traction rope power system on the bridge; Figure 6 for Figure 5 Schematic diagram of the front structure; Figure 7 It is a schematic diagram of the structure of the coordination of the traction rope power system, the ejection arm, the centering support rod and the angle adjustment support rod of the UAV launch device of the present invention; Figure 8 It is a structural schematic diagram of the UAV launch device of the present invention in the initial position; Fig. 9 It is a structural schematic diagram of the UAV launch device of the present invention being located at an initial position and the operating suspension platform of the bridge extending out; Fig.10 It is a schematic diagram of the structure of the ejection arm of the UAV launch device of the present invention when preparing to adjust the position; Fig.11 It is a structural schematic diagram of the UAV launch device of the present invention in the launch position one; Fig.12 It is a structural schematic diagram of the UAV launch device of the present invention in the second launch position; Fig.13 It is a structural schematic diagram of the UAV launch device of the present invention in the launch position three.

[0030] In the figure: 1. bridge frame; 11. pulling lock; 12. traction rope guide pulley assembly; 121. traction rope guide pulley; 13. pulley bracket; 131. door beam; 132. door post; 133. rail post; 1331. rail post guide rail; 14. acceleration pulley block; 141. fixed pulley; 142. movable pulley; 143. fixed pulley support; 144. movable pulley support; 1441. support roller; 15. tensioning compensation reel; 151. tensioner drive member; 16. working platform; 17. hinged support; 2. guide column; 21. left guide column; 211, guide rail; 212, stop block; 213, gear lever; 214, reciprocating drive rod; 215, limit drive device; 216, drive arm; 22, right guide column; 23, hoisting device; 231, lifting drum; 232, lifting rope; 233, lifting drum drive member; 24, lifting rope guide pulley; 25, hinged support ear; 3, drone; 4, angle adjustment support rod; 40, core rod; 41, lifting roller; 42, reinforcement Sleeve; 43, positioning block; 5, ejection arm; 51, arm body; 511, ejection slide rail; 512, angle adjustment long hole; 513, assembly hole; 52, end pulley; 53, tail pulley; 54, ejection pulley; 541, pulley slide foot; 542, UAV support leg slide rail; 55, pulley buffer assembly; 6, traction rope; 7, pitch drive device; 8, ejection drive device; 9, pool; 91, bridge guide rail; 10, centering support rod. DETAILED DESCRIPTION

[0031] The Chinese invention patent with publication number CN104803006A discloses a UAV ejection launch device, which includes a support seat fixed on a platform or a launch vehicle, a launch rail rotatably assembled on the support seat, and an ejection power system that provides power for the launch of the UAV. The tail of the launch rail is hinged to the support seat, and the middle part is adjusted to have a relative angle with the support seat through a retractable structure. Among them, the retractable structure can adjust the angle of the launch rail within a certain range, but the launch rail can only adjust the angle within the elevation range relative to the support seat with its hinge point as the center of the circle. In this way, the launch angle and launch position of the UAV are limited, and the requirements for multi-posture and multi-position launch cannot be met.

[0032] The present invention proposes a new technical solution to the problems existing in the above technical solutions. The core concept of the present invention is: by adjusting the height difference of the front and rear support rods along the guide column that cooperate with the guide column, the pitch angle of the ejection arm installed on the support rod is adjusted. Therefore, the ejection arm is not limited by the ejection arm support structure in the prior art when adjusting the angle, and can be pitched in a wide range from positive elevation to negative elevation within the range allowed by the guide column; of course, the height position of the ejection arm can also be adjusted by running the front and rear support rods as a whole to different heights of the guide column, so that the UAV can be launched at different heights. In this way, the demand for multi-attitude and multi-position launch of the UAV within a large adjustable range is met.

[0033] In view of the above technical problems, the UAV ejection arm of the present invention includes: Figure 1 The guide posts 2 are arranged at intervals on the left and right sides, and a centering support rod 10 and an angle adjustment support rod 4 are installed horizontally between the guide posts 2, and the adjacent ends of the centering support rod 10 and the angle adjustment support rod 4 are installed on the same guide post 2 and the ends are matched with the corresponding guide post guides. The guide post 2 includes a left guide post 21 and a right guide post 22, and the centering support rod 10 and the angle adjustment support rod 4 are arranged at intervals, one at the front and the other at the back. In this embodiment, as Figure 7 As shown, the angle adjustment support rod 4 is arranged in front, and the centering support rod 10 is arranged in the back. The left and right ends of each support rod are guided and matched with the corresponding guide column 2. Accordingly, each guide column 2 is provided with Figure 3 The front and rear guide rails 211 extending in the longitudinal direction (up and down direction) of the guide column are shown. The guide rails 211 of this embodiment are concave groove rails. The left and right ends of the angle adjustment support rod 4 and the centering support rod 10 are provided with Figure 7 The lifting roller 41 shown in the figure extends into the guide rail 211 and rolls with the side rail surface of the guide rail 211. The single-sided wheel flange of the lifting roller 41 forms an axial stop with the outer edge of the guide rail 211 to achieve the lateral (left-right direction) positioning of the support rod between the two guide columns 2, thereby ensuring the stability and reliability of the support rod running in the guide rail 211.

[0034] like Figure 4 and Figure 7 The centering support rod 10 and the angle adjustment support rod 4 are both a combination of a cylindrical core rod 40 and two left and right sections of reinforcing sleeves 42. The core rods 40 of the two are installed with ejection arms 5 in a transverse manner. The reinforcing sleeves 42 are located on both sides of the ejection arm 5 and are in a tight fit with the corresponding core rod 40 to strengthen the rigidity and strength of the support rod as a combination. The ejection arm 5 forms a swing arm with the centering support rod 10 as the swing center. The ejection arm 5 is provided with an assembly hole 513 that can be rotatably matched with the centering support rod 10, and is also provided with a guide matching with the angle adjustment support rod 4 along its length direction. Figure 7 The angle adjustment slot 512 is shown. When the centering support rod 10 and the angle adjustment support rod 4 move to the set height along the guide column 2 respectively, the two will form a corresponding height difference, so that the ejection arm 5 is adjusted to the corresponding pitch angle. To be more specific, according to the different height difference combinations of the centering support rod 10 and the angle adjustment support rod 4 along the longitudinal direction of the guide column 2, the ejection arm 5 can be adjusted to a positive pitch angle upward relative to the front normal of the guide column 2 (toward the front and perpendicular to the longitudinal direction of the guide column 2), or it can be adjusted to a negative pitch angle downward relative to the front normal of the guide column 2, and it can also be adjusted to a zero pitch angle parallel to the front normal of the guide column 2. The setting of the angle adjustment slot 512 solves the contradiction between the linear movement of the angle adjustment support rod 4 relative to the centering support rod 10 and the arc movement of the ejection arm 5 relative to the centering support rod 10, so that the centering support rod 10 and the angle adjustment support rod 4 can stably run to different heights along the guide column 2. An angle adjustment support rod lifting drive device and a centering support rod lifting drive device are also provided between the two ends of the angle adjustment support rod 4 and the centering support rod 10 and the corresponding guide column 2. Specifically, each guide column 2 has a set of angle adjustment support rod lifting drive device and centering support rod lifting drive device. When working, the angle adjustment support rod lifting drive device on the two guide columns 2 keeps running synchronously, and the centering support rod lifting drive device on the two guide columns 2 also keeps running synchronously. The lifting drive device can cooperate with the corresponding centering support rod 10 and the angle adjustment support rod 4 respectively to make the rise or fall of the two easier and more labor-saving. As a result, the ejection arm is not limited by the ejection arm support structure in the prior art when adjusting the angle, and can be pitched in a wide range from positive elevation angle to negative elevation angle within the range allowed by the guide column; of course, the height position of the ejection arm can also be adjusted by running the front and rear support rods as a whole to different heights of the guide column, so that the drone can be launched at different heights. As a result, the demand for multi-attitude and multi-position launch of drones within a large adjustable range is realized.

[0035] The ejection arm 5 of this embodiment includes: Figure 7The arm body 51 shown in the figure has an ejection slide rail 511 disposed thereon, and a pulley buffer assembly 55 is disposed at the end of the ejection stroke on the upper surface of the ejection arm 5. The front end and the rear end of the ejection arm 5 are respectively provided with an end pulley 52 and a tail pulley 53, the end pulley 52 is hinged at the front end of the ejection arm 5, and there are two tail pulleys 53, and the two tail pulleys 53 are hinged at the tail of the ejection arm 5 in a radial array in a close proximity.

[0036] The assembly hole 513 of this embodiment is located at the tail of the ejection arm 5. When the core rod 40 of the centering support rod 10 passes through the assembly hole 513, it is rotatably assembled with a tail pulley 53. The angle adjustment long hole 512 is located in the middle of the ejection arm 5, and forms a rotation and sliding fit with the cylindrical section of the core rod 40 of the angle adjustment support rod 4. For the same ejection arm 5, the support rods located in the middle and tail can achieve a greater angle of deflection of the ejection arm 5 than the support rods located in the front and tail. Of course, in other embodiments, the angle adjustment support rod and the centering support rod can also cooperate with the ejection arm at the front, rear side or the front and middle side of the ejection arm 5. In addition, in other embodiments of the ejection arm rack, the end pulley 52 and the tail pulley 53 may not be provided on the ejection arm 5.

[0037] In this embodiment, the angle adjustment support rod lifting drive device and the centering support rod lifting drive device are both as follows: Figure 4 The hoisting device 23 shown in the figure has a power component installed at the top of the corresponding guide column 2, and its suspension rope 232 is correspondingly connected to the ends of the angle adjustment support rod 4 and the centering support rod 10. The power component of the hoisting device 23 includes Figure 4 The lifting drum 231 shown in the figure and the lifting drum driving member 233 arranged on one side of the lifting drum 231 and connected to the lifting drum 231 by transmission. The upper end of the lifting rope 232 is wound on the lifting drum 231, and a square-shaped positioning block 43 is installed on the support rod close to the lifting roller 41. The lower end of the lifting rope 232 is connected to the upper part of the positioning block 43 at the end of the corresponding support rod. The lifting drum driving member 233 can drive the lifting drum 231 to rotate to raise or lower the position of the corresponding support rod. The hoisting device 23 has a simple structure and is easy to operate. During operation, the reliability of lifting or lowering the ejection arm 5 can be guaranteed. A lifting rope guide pulley 24 is also arranged at the top of the guide column 2, just above the guide track 211. The lifting rope 232 bypasses the lifting rope guide pulley 24 and is connected to the positioning block 43. The lifting rope guide pulley 24 prevents the lifting position of the lifting rope 232 from being offset, thereby ensuring the stability of the lifting process. In addition, in other embodiments, the lifting drive device can also be a jack device arranged at the bottom of the guide column 2, and the upper part of the jack device is connected to the end of the corresponding support rod. When the jack mechanism is working, the centering support rod 10 and the angle adjustment support rod 4 can be adjusted to the upper and lower positions.

[0038] In this embodiment, if Figure 4As shown, the left guide column 21 and the right guide column 22 are both provided with an angle adjustment support rod limiting mechanism and a centering support rod limiting mechanism with the same working principle and structural form. The angle adjustment support rod limiting mechanisms on the two guide columns 2 are arranged symmetrically on the left and right, and the centering support rod limiting mechanisms on the two guide columns are also arranged symmetrically on the left and right. The angle adjustment support rod limiting mechanisms and the centering support rod limiting mechanisms include a blocking rod 213 that is movably matched with the guide column 2, and the blocking rod 213 has a evading position for avoiding the corresponding support rod and a blocking position for blocking the corresponding support rod from moving upward in the movable stroke. In this way, when the centering support rod 10 and the angle adjustment support rod 4 run to a certain height along the guide column, the blocking rod 213 can block the corresponding support rod from moving upward, specifically, the blocking rod 213 contacts the upper surface of the positioning block 43 installed at the end of the support rod. In this way, under the joint action of the stop of the blocking rod 213 and the upward pulling of the corresponding hoisting device 23, the corresponding support rod is fixed to the set height. In this embodiment, each angle adjustment support rod limiting mechanism or centering support rod limiting mechanism includes 14 blocking rods 213 arranged near the corresponding guide rail 211 and distributed at equal intervals along the extension direction thereof, so that the blocking rods 213 can divide the positioning heights of the centering support rod 10 and the angle adjustment support rod 4 on the guide column 2 into different gears, thereby facilitating the adjustment of the pitch angle of the ejection arm 5. Of course, in other embodiments, the number of the blocking rods can also be set to other numbers, and the blocking rods can also be arranged on the guide column at more diverse intervals as needed.

[0039] In this embodiment, the blocking rod 213 is hingedly assembled on the guide column 2, and one end of the blocking rod 213 is connected to a Figure 4The reciprocating drive rod 214 shown, each stopper rod 213 of the same limit mechanism is connected to the same reciprocating drive rod 214 to form a multi-linked quadrilateral mechanism, and a limit drive device 215 is connected to the reciprocating drive rod 214. The hinged ends of the stopper rods 213 in this embodiment are all provided with drive arms 216, and each drive arm 216 is connected to the reciprocating drive rod 214. The limit drive device 215 is an electric push rod, the rear end of the cylinder body of which is hinged on the guide column 2, and the piston end is hinged to one of the drive arms 216. When the piston end is extended, the reciprocating drive rod 214 is driven upward, and the reciprocating drive rod 214 drives the stopper rod 213 to rotate downward to the avoidance position to clear the guide track 211; when the piston end is retracted, the reciprocating drive rod 214 is driven downward, and the reciprocating drive rod 214 drives the stopper rod 213 to rotate upward to cross the guide track 211, thereby achieving the blocking of the support rod from moving upward. A stop block 212 is provided on the guide column 2 corresponding to each stop bar 213, and its function is to stop the upward rotation of the stop bar 213 and bear the extrusion force generated by the upward pulling of the positioning block 43 of the corresponding support bar by the hoisting device 23, so that the corresponding stop bar 213 is more firmly and reliably placed in the blocking position. The existence of the reciprocating drive rod 214 realizes the cooperation between a limit drive device 215 and each stop bar 213, which has a simple structure and saves costs. In addition, in other embodiments, each stop bar 213 can be equipped with a corresponding limit drive device 215, and its working mode can be either a swing opening and closing driven by a single motor or a hydraulic motor, or a linear reciprocating opening and closing driven by a single motor or a hydraulic motor through a gear rack mechanism. Of course, the latter can also be directly driven by an electric push rod and a hydraulic cylinder, and it is only necessary to meet the requirement that the stop bar 213 has a avoidance position for avoiding the corresponding support bar and a blocking position for blocking the upward movement of the corresponding support bar under the action of the limit drive device 215. The reciprocating drive rod 214, drive arm 216 and position limiting drive device 215 configured on the guide track 211 of the angle adjustment support rod 4 of this embodiment are located on the outside of the guide column 2; the reciprocating drive rod 214, drive arm 216 and position limiting drive device 215 configured on the guide track 211 of the centering support rod 10 are located in the inner cavity of the guide column 2. It is easy to imagine that in other embodiments, the reciprocating drive rod, drive arm and position limiting drive device configured on the guide tracks of the angle adjustment support rod and the centering support rod can also be arranged in the inner cavity of the guide column, or can also be arranged on the outside of the guide column.

[0040] Another aspect of the present invention further provides a UAV launch device, which includes a UAV ejection arm, an ejection pulley 54 and an ejection power system. Since the UAV ejection arm is the same as the above-mentioned UAV ejection arm embodiment, it will not be described here. The ejection pulley 54 is installed on the ejection arm 5 in the form of a sliding pair and is connected to the ejection power system. Figure 7As shown, the lower part of the ejection pulley 54 is provided with a pulley slide foot 541 which can be used as an adapter for the ejection slide rail 511. The ejection pulley 54 is connected to the ejection power system so that the ejection power system can drive the ejection pulley to move along the ejection slide rail 511. The ejection pulley 54 is provided with a UAV support foot slide rail 542 and a UAV support foot locking member so that the UAV can be guided on the ejection pulley 54 or locked relative to the ejection pulley 54. The end of the ejection stroke on the upper surface of the ejection arm 5 is provided with a pulley buffer assembly 55 to implement buffer braking on the ejection pulley 54 moving to the end of the ejection stroke, and at the same time, the UAV 3 is released from its lock on the ejection pulley 54 under the action of inertia and flies out smoothly to complete the launch.

[0041] In this embodiment, the ejection power system is as follows Figure 5 , Figure 6 The traction rope power system shown in the figure includes a traction rope 6, a pulley bracket 13, a fixed pulley assembly, a movable pulley assembly, a tension compensation drum 15 and an ejection drive device 8, wherein the fixed pulley assembly, the movable pulley assembly and the traction rope 6 constitute an acceleration pulley block 14, the fixed pulley assembly includes a group of fixed pulleys 141, the movable pulley assembly includes a group of movable pulleys 142, the traction rope 6 sequentially passes around the fixed pulleys 141 in the fixed pulley assembly and the movable pulleys 142 in the movable pulley assembly, one end of the traction rope 6 is connected to the ejection pulley 54, and the other end of the traction rope 6 is wound on the tension compensation drum 15, the tension compensation drum 15 is arranged at an end away from the ejection arm 5, and can compensate the length of the traction rope 6 when the ejection arm 5 adjusts its posture. The tension compensation drum 15 avoids the problem that the centering support rod 10 and the angle adjustment support rod 4 cannot adjust the height due to the fixed length of the traction rope 6, and ensures that the angle adjustment process of the ejection arm 5 can be carried out normally. The tension compensation reel 15 is also provided with a tensioner driving member 151 for easy operation.

[0042] The fixed pulley assembly is connected to the pulley bracket 13, as shown in FIG. Figure 5 , Figure 6As shown, the pulley bracket 13 includes a door beam 131 and door posts 132 arranged on both sides of the door beam 131. Two door posts 132 are arranged on each side of the door beam 131. The two door posts 132 are arranged obliquely and form a triangle with the ground. At the same time, a rail post 133 is vertically arranged on the lower side of the end of the door beam 131. The fixed pulley assembly includes a fixed pulley support 143 and seven fixed pulleys 141 coaxially connected to the fixed pulley support 143. The movable pulley assembly includes a movable pulley support 144 and six movable pulleys 142 coaxially connected to the movable pulley support 144. Of course, in other embodiments, the fixed pulley 141 and the movable pulley 142 can also be set to other numbers as needed. The fixed pulley support 143 is installed on the lower side of the door beam 131, and the movable pulley 142 and the movable pulley support 144 are sequentially wound and suspended below the fixed pulley 141 through the traction rope 6. A pair of support rollers 1441 are symmetrically arranged on the left and right sides of the movable pulley support 144, and a rail column guide rail 1331 that can cooperate with the support rollers 1441 is arranged on the rail column 133, so that the movable pulley assembly can be guided and moved along the rail column guide rail 1331 under the action of the ejection drive device 8. Each movable pulley 142 is connected to the ejection drive device 8 through the movable pulley support 144. When the ejection drive device 8 is working, it drives the movable pulley support 144 to move so that the distance between the movable pulley assembly and the fixed pulley assembly changes, so that the traction rope 6 wound on the fixed pulley 141 and the movable pulley 142 drives the ejection pulley 54 to move along the ejection slide rail 511 to realize the launch of the UAV.

[0043] like Figure 5 and Figure 6 As shown, the pulley bracket 13, the tensioning compensation drum 15 and the ejection drive device 8 belonging to the above-mentioned traction rope power system are all installed on a launch device base independent of the guide column 2, wherein the pulley bracket 13 is located in the middle of the launch device base, the ejection drive device 8 is located directly below the pulley bracket 13, and the tensioning compensation drum 15 is located behind the ejection drive device 8.

[0044] A traction rope guide pulley assembly 12 is also provided in front of the ejection drive device 8 on the launch device base. Two traction rope guide pulleys 121 are provided on the traction rope guide pulley assembly 12. The two traction rope guide pulleys 121 are installed on the traction rope guide pulley bracket in a vertical array and in a close proximity. Figure 7As shown, the starting end of the traction rope 6 is connected to the front end of the ejection pulley 54, and then it passes through the end pulley 52, the tail pulley 53, the traction rope guide pulley 121, each fixed pulley 141 and the movable pulley 142 in the acceleration pulley group 14 on the ejection arm 5 in sequence, and finally its end section is wound on the tension compensation drum 15. When the traction rope 6 passes through the tail pulley 53 of the ejection arm 5, it passes through the channel formed between the two tail pulleys 53; when the traction rope 6 passes through the traction rope guide pulley 121, it passes through the channel formed between the two traction rope guide pulleys 121; when the traction rope 6 passes through the fixed pulley 141 and the movable pulley 142, it enters from the first fixed pulley 141 at the right end, and then successively wraps around six pairs of movable pulleys 142 and fixed pulleys 141 to the left, and finally winds out from the leftmost fixed pulley 141 and leads to the tension compensation drum 15.

[0045] In this embodiment, the ejection drive device 8 is a linear actuator. The linear actuator moves linearly to drive the movable pulley support 144 to move so that the distance between the movable pulley assembly and the fixed pulley assembly changes, so that the traction rope 6 wound on the fixed pulley 141 and the movable pulley 142 drives the ejection pulley 54 to move along the ejection slide rail 511 to launch the UAV. At the same time, the linear actuator can also effectively control the speed of the traction rope 6 by adjusting its running speed.

[0046] In this embodiment, the linear actuator is a servo electric cylinder and its servo drive control component. The piston rod ends of the two servo electric cylinders are connected to the movable pulley support 144 through the pull rope 11. The synchronous drive of the two servo electric cylinders is realized by the servo drive control component, which includes two drivers and a controller. The controller is connected to the two drivers as a host computer at the same time, and each driver is connected to a servo electric cylinder. In this way, the servo electric cylinder can implement precise motion control of the launch acceleration process according to the set acceleration motion law, and can meet the requirements of the launch conditions such as different UAV mass characteristics, different off-orbit speeds, different damping media and different overload constraints in the test. It has high launch accuracy, strong adaptability to working conditions, good load compatibility, and can achieve precise control of the launch speed of the UAV, and can also achieve stepless and smooth adjustment of the launch speed within a large range. In addition, in other embodiments, the linear actuator can also be a hydraulic cylinder or a linear motor.

[0047] Another aspect of the present invention further provides a UAV pool test system, which includes a pool 9 and a UAV launch device arranged on the pool 9. The embodiment of the UAV launch device is the same as the embodiment of the UAV launch device described above, so it will not be repeated here.

[0048] The base of the launch device in the aforementioned embodiment is a bridge frame 1 that can span the pool 9. Two guide columns 2 are installed on the bridge frame 1 in a pitchable manner through their respective middle parts and are located in front of the bridge frame 1. The bridge frame 1 of this embodiment is installed on the embankments on both sides of the pool 9. A pitch drive device 7 is provided between the bridge frame 1 and the guide columns 2 to drive the two guide columns 2 to move synchronously. The centering support rod 10 and the angle adjustment support rod 4 can only ensure the pitch of the guide column 2 within a certain angle, and cannot achieve launch perpendicular to the water surface upward or perpendicular to the water surface downward. Therefore, a preferred method is provided in this embodiment, in which the guide column 2 is rotatably assembled with the bridge frame 1, such as Figure 4 As shown, a hinged lug 25 is provided in the middle of the guide column 2, and two hinged lugs 25 are provided on the bridge frame 1 corresponding to the hinged lugs 25 of the two guide columns 2. Figure 3 The hinged support 17 shown in the figure, through the hinged support 17 and the hinged lugs 25 of the guide column 2 and the necessary hinge axis, the two guide columns 2 are hinged on the bridge frame 1. Fig.12 , Fig.13 As shown, the guide column 2 can pitch and swing relative to the bridge 1, and the pitch of the guide column 2 cooperates with the pitch of the ejection arm 5 in the guide column 2, so that the ejection arm 5 can implement any pitch angle within a range of nearly 180° from quasi-vertical upward underwater to quasi-vertical downward on the water, making the launch angle and launch position of the UAV more diverse, meeting the needs of the UAV surface test. In this embodiment, the pitch drive device 7 is a pair of servo electric cylinders, each of which is located behind the corresponding guide column 2, and its piston end is connected to the upper end of the guide column 2, and the other end is connected to the bridge 1. The two servo electric cylinders can implement precise position control and synchronous control of the pitch movement of the two guide columns 2. In addition, in other embodiments, the pitch drive device can also be a pair of linear motors or hydraulic cylinders or cylinders. Of course, in another embodiment, the pitch drive device can also be two rotary actuators respectively installed on the hinged ears of the two guide columns, or a set of mechanical synchronous transmission devices composed of a drive motor, a reduction transfer case, left and right half shafts and terminal gear arcs, etc., with the main body installed inside the bridge.

[0049] In this embodiment, bridge guide rails 91 and positioning mechanisms are provided on the embankments on both sides of the water pool 9. The bridge can move back and forth and be positioned on the water pool along the bridge guide rails 91. In this way, the bridge can drive the UAV launch device to move to different positions of the water pool, making the launch position of the UAV more flexible and the spatial adjustment range of the launch position larger.

[0050] In this embodiment, the bridge frame 1 is also provided with Figure 2The work platform 16 shown is for operators to operate the ejection arm 5. There are two work platforms 16, which are arranged side by side in the middle of the inner cavity of the bridge 1 and are retractable. When it is necessary to load and unload the drone 3 on the ejection pulley 54, or to test, inspect and maintain the ejection arm 5, the ejection pulley 54 and the drone 3, the work platform 16 extends from the front of the bridge 1 to carry the staff. At other times, the work platform 16 is retracted into the inside of the bridge 1. The design of the work platform 16 facilitates operations related to the drone 3, the ejection arm 5 and the ejection pulley 54, and also improves the safety of the operation process.

[0051] The working process of an embodiment of a drone pool test system of the present invention is as follows: like Figure 8 As shown, in the initial state, the left guide column 21 and the right guide column 22 are perpendicular to the water surface, the centering support rod 10 and the angle adjustment support rod 4 are positioned at the same height at the fifth gear rod 213 from the upper end, the ejection arm 5 is horizontal, the ejection pulley 54 is locked at the starting end of the ejection slide rail 511, and the piston end of the ejection drive device 8 is extended.

[0052] When you start working, Fig. 9 As shown, the working platform 16 extends forward, and the operator uses the working platform 16 to install the UAV 3 (or its model) on the ejection pulley 54 and lock it by cooperating with the support leg slide rail 542 on the ejection pulley 54 and the UAV support leg locking piece. The operator evacuates the working platform 16, and the working platform 16 retracts into the bridge 1.

[0053] like Fig.10 As shown, the lifting drums 231 of the four hoisting devices 23 on the left guide column 21 and the right guide column 22 rotate synchronously to release the ropes, and the centering support rod 10 and the angle adjustment support rod 4 move downward from the original position to an appropriate distance under the combined action of gravity and the respective suspension ropes 232. In this process, the tension compensation drum 15 appropriately retracts and releases the traction rope 6, and at the same time, the piston ends of the limit drive devices 215 on the left guide column 21 and the right guide column 22 extend and move, and the gear rods 213 rotate downward synchronously to a drooping state, and the guide track 211 opens.

[0054] The four hoisting devices 23 are divided into two groups, the front and the rear, to hoist the corresponding angle adjustment support rods and the centering support rods synchronously, and each lifting drum 231 appropriately retracts and releases the corresponding suspension rope 232. Under the combined action of gravity and the respective suspension ropes 232, the centering support rod 10 and the angle adjustment support rod 4 are respectively lifted and lowered along the corresponding pair of guide rails 211 on the left and right guide columns to the appropriate position below the set position. In this process, the tension compensation drum 15 appropriately retracts and releases the traction rope 6.

[0055] Subsequently, the piston ends of the limit drive devices 215 on the left guide column 21 and the right guide column 21 are retracted, and the gear rods 213 are synchronously rotated upward to a horizontal state and contact the corresponding stop blocks 212. At this time, the gear rods 213 cross the guide rails 211. The lifting drums 231 of the four hoisting devices 23 are rewound (the four hoisting devices 23 are divided into two pairs, front and rear, and each hoist is synchronously hoisted), and the centering support rod 10 and the angle adjustment support rod 4 are pulled upward until they are as shown in FIG. Fig.11 As shown, the upper surface of the positioning block 43 of each support rod is attached to and squeezed against the lower surface of the corresponding gear lever 213. At the same time, the tensioning reel of the tension compensation reel 15 appropriately retracts and releases the traction rope 6. Finally, the tensioning reel rewinds to tighten the entire traction rope 6. At this point, the launch device is in the set launch posture 1, that is, the launch position of the drone 3 is above the water surface, the launch attitude angle is a negative pitch angle tilted downward, and the launch preparation work in posture 1 is ready.

[0056] As needed, such as Fig.12 As shown, a pair of servo electric cylinders of the pitch drive device 7 can also be started to make the left guide column 21 and the right guide column 22 pitch synchronously to the set inclination angle, so as to further adjust the launch attitude angle of the UAV 3 before firing, so that the launch device is in the set launch attitude 2, that is, Fig.12 As shown, the attitude of UAV 3 is adjusted to a relative Fig.11 The negative pitch angle with a smaller absolute value is shown. At this point, the launch preparation for posture 2 is ready.

[0057] Of course, the present invention can also achieve more different UAV launch postures through the height adjustment of the centering support rod 10 and the angle-adjustable support rod 4 along the guide column 2, the pitch of the guide column 2, and even the forward and backward movement of the bridge 1 on the pool. For example, Fig.13 A launch posture three is given, that is, the launch position of UAV 3 is below the water surface, and the launch attitude angle is a positive pitch angle tilted upward.

[0058] When the launch preparation is ready, the ejection pulley 54 is unlocked at the starting end of the ejection slide rail 511. At the same time, the servo drive control component drives the piston rods of the two servo electric cylinders of the ejection drive device 8 to pull back synchronously according to the set motion law. After the acceleration pulley group 14 increases the speed, the starting end of the traction rope 6 pulls the ejection pulley 54 to eject forward along the ejection slide rail 511. When the ejection pulley 54 moves to the pulley buffer assembly 55, it starts to decelerate and brake. The UAV 3 (or its model) is unlocked from the ejection pulley 54 and relies on inertia to slide out of the ejection pulley 54 along the UAV support rail 542, thereby completing the launch of the UAV 3 (or its model).

[0059] After the UAV is launched, the ejection arm 5 is reset to the position as shown in the figure, roughly in the reverse process of the above-mentioned posture adjustment process before launch. Figure 8The initial state shown (except the ejection pulley 54) is that the centering support rod 10 and the angle adjustment support rod 4 are positioned at the same height at the fifth gear rod 213 from the upper end. Subsequently, the working platform 16 is extended, and the operator moves the ejection pulley 54 back to the starting end of the ejection slide rail 511 and locks it. The operator evacuates the working platform 16, and the working platform 16 is retracted into the bridge 1.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. UAV ejection arm, characterized in that: The invention comprises guide posts which are arranged at intervals on the left and right sides, a centering support rod and an angle adjustment support rod are horizontally installed between the guide posts, one of the centering support rod and the angle adjustment support rod is arranged at intervals in front and the other in the back, adjacent ends of the centering support rod and the angle adjustment support rod are installed on the same guide post and the ends are matched with the corresponding guide post guides, an ejection arm is installed through the centering support rod and the angle adjustment support rod, the ejection arm forms a swing arm with the centering support rod as the swing center, an angle adjustment long hole which is matched with the angle adjustment support rod guide is also arranged on the ejection arm along the length direction, the pitch angle of the ejection arm can be adjusted by the difference between the upper and lower positions of the centering support rod and the angle adjustment support rod, and an angle adjustment support rod lifting drive device and a centering support rod lifting drive device are respectively arranged between the angle adjustment support rod and the centering support rod and the corresponding guide posts.

2. The UAV ejection arm according to claim 1, characterized in that: The angle adjustment support rod lifting drive device and the centering support rod lifting drive device are both hoisting devices, and the power components of the hoisting devices are installed on the top of the corresponding guide columns, and their lifting ropes are correspondingly connected to the angle adjustment support rod and the centering support rod.

3. The UAV ejection arm according to claim 1, characterized in that: An angle adjusting support rod limiting mechanism and a centering support rod limiting mechanism are arranged on any of the guide columns. The angle adjusting support rod limiting mechanisms on the two guide columns are arranged symmetrically on the left and right, and the centering support rod limiting mechanisms on the two guide columns are also arranged symmetrically on the left and right. The angle adjusting support rod limiting mechanism and the centering support rod limiting mechanism include a baffle rod which is movably cooperated with the guide column where they are located, and the baffle rod has an avoidance position for avoiding the corresponding support rod and a blocking position for blocking the corresponding support rod from moving upward in its movable stroke.

4. The UAV ejection arm according to claim 3, characterized in that: The blocking rod is hingedly assembled on the guide column, and a reciprocating drive rod is connected to one end of the blocking rod. All blocking rods of the same limiting mechanism are connected to the same reciprocating drive rod to form a multi-linked quadrilateral mechanism, and a limiting drive device is connected to the reciprocating drive rod.

5. The inorganic launching device is characterized in that: It comprises a UAV ejection arm, an ejection pulley and an ejection power system. The UAV ejection arm is the UAV ejection arm as described in any one of claims 1 to 4. The ejection pulley is installed on the ejection arm in the form of a sliding pair and is connected to the ejection power system.

6. The UAV launch device according to claim 5, characterized in that: The ejection power system is a traction rope power system, which includes a traction rope, a pulley bracket, a fixed pulley, a movable pulley, a tension compensation drum and an ejection drive device. The traction rope is passed around the fixed pulley and the movable pulley, one end of the traction rope is connected to the ejection pulley, and the other end of the traction rope is wound on the tension compensation drum. The fixed pulley is connected to the pulley bracket, and the movable pulley is connected to the ejection drive device.

7. The UAV launch device according to claim 6, characterized in that: The ejection drive device is a linear actuator.

8. The UAV launch device according to claim 7, characterized in that: The linear actuator is a servo electric cylinder and a servo drive control component thereof.

9. UAV pool test system, characterized by: It comprises a water pool and a UAV launching device arranged on the water pool, and the UAV launching device is the UAV launching device according to any one of claims 5-8.

10. The UAV pool test system according to claim 9, characterized in that: The two guide columns are installed on a bridge frame spanning the pool in a pitching manner through their respective middle parts, and a pitching driving device for driving the two guide columns to move synchronously is arranged between the bridge frame and the guide columns.

11. The UAV pool test system according to claim 10, characterized in that: Guide rails and positioning mechanisms are arranged on both sides of the water pool. The bridge frame can move forward and backward on the water pool along the guide rails and be positioned. The ejection power system is installed on the bridge frame.

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