Take-off limiting device of fixed-wing unmanned aerial vehicle
By designing a takeoff limiting device for fixed-wing UAVs and using limit lock components to control the gliding and takeoff of the UAVs, the problem of limited gliding distance of fixed-wing UAVs in complex environments has been solved, enabling rapid takeoff and widespread application.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-03-03
AI Technical Summary
Fixed-wing drones struggle to find suitable takeoff sites in complex environments such as cities, mountains, or emergency rescue, resulting in limited taxiing distances and restricting their flexibility and versatility of application.
A takeoff limiting device for a fixed-wing unmanned aerial vehicle (UAV) was designed, including a base, a sleeve, a support seat, and a limit lock assembly. By combining an arc-shaped support groove and a track groove, the limit lock assembly controls the gliding and takeoff of the UAV fuselage, reducing the gliding distance and improving takeoff efficiency.
It enables rapid takeoff of UAVs under short taxiing distance conditions, improving the flexibility and wide application capabilities of fixed-wing UAVs.
Smart Images
Figure CN223962310U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of unmanned aerial vehicle (UAV) equipment technology, and more particularly to a takeoff limiting device for a fixed-wing UAV. Background Technology
[0002] Fixed-wing drones have demonstrated enormous application potential in various fields such as aerial photography, surveying and mapping, agricultural monitoring, and search and rescue, thanks to their efficient flight performance, wide operating range, and flexible payload configuration.
[0003] Traditionally, fixed-wing drones rely on gliding on the ground to accumulate sufficient speed to generate the necessary lift. This process requires the drone to have sufficient thrust to overcome gravity and take off. The gliding process also requires a takeoff area of a certain length to ensure the drone can safely accelerate before reaching takeoff speed. However, in practical applications, especially in complex and variable outdoor environments such as cities, mountains, or emergency rescue, finding suitable takeoff sites is difficult. Limited space restricts gliding distance, making it difficult for fixed-wing drones to take off in these scenarios, thus limiting the flexibility and versatility of fixed-wing drone applications.
[0004] Based on this, this application proposes a takeoff limiting device for a fixed-wing unmanned aerial vehicle (UAV) to solve the aforementioned technical problems. Utility Model Content
[0005] To address the aforementioned technical problems, this application provides a takeoff limiting device for a fixed-wing unmanned aerial vehicle (UAV) that can reduce taxiing distance and improve the flexibility and versatility of the UAV.
[0006] This application provides a takeoff limiting device for a fixed-wing unmanned aerial vehicle, comprising:
[0007] A base, a sleeve, a support seat, and a limit lock assembly; the sleeve is movably connected to the base, and the bottom of the support seat has an extension portion, which is fitted inside the sleeve;
[0008] The support base is provided with an arc-shaped support groove that runs through both ends of the support base. The arc-shaped support groove is used to support the fuselage of the fixed-wing UAV. A track groove is provided in the arc-shaped support groove and extends from the arc-shaped support groove toward the base. The limiting lock assembly is disposed in the track groove and cuts the track groove to form a blocking section and a sliding section. When the fuselage is placed in the arc-shaped support groove, the limiting block at the bottom of the fuselage is inserted into the blocking section. The limiting lock assembly is used to prevent or allow the limiting block to move from the blocking section to the sliding section.
[0009] Optionally, the limit lock assembly includes a moving block, an elastic element, and a drive disk, and the side of the track groove is provided with a receiving area, which is connected to the track groove;
[0010] The movable block is located within the receiving area, the drive disk is disposed within the receiving area, the drive disk is provided with a protrusion, the drive disk and the protrusion cooperate to control the movable block to move towards the track groove, the elastic element is arranged between the movable block and the inner wall of the receiving area, and the arrangement direction of the elastic element is parallel to the moving direction of the movable block.
[0011] Optionally, a support post is provided at the bottom of the receiving area, the support post being used to abut the end of the movable block, the end being the end away from the track groove.
[0012] Optionally, the support base is provided with a display screen, and the first end of the movable block is provided with a pressure sensor. The pressure sensor is located on the side of the first end facing the limiting block, and the pressure sensor is electrically connected to the display screen.
[0013] Optionally, the limiting lock assembly is provided on both sides of the track groove, and the first end of the two limiting lock assemblies is provided with the same magnetic pole.
[0014] Optionally, the elastic element is a spring.
[0015] Optionally, a turntable is provided between the sleeve and the base.
[0016] Optionally, the arc-shaped bearing groove forms an angle with the horizontal plane, and the angle is 10-45 degrees.
[0017] Optionally, the sleeve and the extension are detachably connected.
[0018] Optionally, the inner wall of the arc-shaped bearing groove is provided with a number of balls.
[0019] As can be seen from the above technical solutions, this application has the following effects:
[0020] This application utilizes an arc-shaped support groove to support the fuselage of a fixed-wing UAV awaiting takeoff. A track groove is positioned within the arc-shaped support groove, and a limit lock assembly is installed within the track groove. The limit lock assembly divides the track groove into a blocking section and a taxiing section. A limit block at the bottom of the fuselage is located in the blocking section. The limit lock assembly is used to prohibit or allow the limit block to move from the blocking section to the taxiing section. Thus, during takeoff, the limit lock assembly confines the limit block within the blocking section. As takeoff power is continuously increased, the fuselage is restrained on the arc-shaped support groove. Once the forward takeoff power exceeds the takeoff weight, the limit lock assembly is unlocked, allowing the fuselage to eject and take off rapidly. This reduces taxiing distance, improves takeoff efficiency, and allows the UAV to adapt to areas with short taxiing distances, enhancing the flexibility and versatility of the fixed-wing UAV. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of a takeoff limiting device for a fixed-wing unmanned aerial vehicle according to this application;
[0023] Figure 2 This is a schematic diagram of the support base in the takeoff limiting device for a fixed-wing unmanned aerial vehicle according to this application;
[0024] Figure 3 This is another schematic diagram of the support base in the takeoff limiting device for a fixed-wing unmanned aerial vehicle according to this application;
[0025] Figure 4 This is a top view schematic diagram of the support base in the takeoff limiting device of a fixed-wing unmanned aerial vehicle according to this application;
[0026] Figure 5 This is a schematic diagram of the locking state of the limit lock assembly in the takeoff limiting device for a fixed-wing unmanned aerial vehicle according to this application;
[0027] Figure 6 This is a schematic diagram of the unlocked state of the limit lock component in the takeoff limiting device of a fixed-wing unmanned aerial vehicle according to this application;
[0028] Figure 7 This is a schematic diagram of a pressure sensor in a takeoff limiting device for a fixed-wing unmanned aerial vehicle according to this application;
[0029] Figure 8This is a schematic diagram of a drive disc in a takeoff limiting device for a fixed-wing unmanned aerial vehicle (UAV) according to this application; wherein, the components are: base 01, sleeve 02, bearing seat 03, extension 04, arc-shaped bearing groove 05, track groove 06, fuselage 07, limiting block 08, blocking section 09, sliding section 10, moving block 11, spring 12, drive disc 13, protrusion 14, support column 15, pressure sensor 16, display screen 17, turntable 18, and ball bearing 19. Detailed Implementation
[0030] In this utility model, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.
[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0032] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0033] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.
[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0035] This application provides a takeoff limiting device for a fixed-wing unmanned aerial vehicle (UAV) to reduce taxiing distance and improve the UAV's flexibility and versatility. The specific implementation process of this application is described below.
[0036] Please see Figure 1 The takeoff limiting device for a fixed-wing unmanned aerial vehicle provided in this application includes:
[0037] The system comprises a base 01, a sleeve 02, a support seat 03, and a limit lock assembly. The sleeve 02 is movably connected to the base 01. The bottom of the support seat 03 has an extension 04, which is fitted inside the sleeve 02. The support seat 03 has an arc-shaped support groove 05 that extends through both ends of the support seat 03. The arc-shaped support groove 05 is used to support the fuselage 07 of the fixed-wing UAV. A track groove 06 is provided in the arc-shaped support groove 05 and extends from the arc-shaped support groove 05 toward the base 01. The limit lock assembly is located in the track groove 06 and cuts the track groove 06 to form a blocking section 09 and a sliding section 10. When the fuselage 07 is placed in the arc-shaped support groove 05, the limit block 08 at the bottom of the fuselage 07 is inserted into the blocking section 09. The limit lock assembly is used to prohibit or allow the limit block 08 to move from the blocking section 09 to the sliding section 10.
[0038] The base 01 is made of sturdy and durable materials to ensure stability and load-bearing capacity. The bottom of the base 01 can be designed with an anti-slip structure to adapt to different ground conditions and prevent the device from slipping during takeoff.
[0039] The sleeve 02 is movably connected to the base 01, allowing it to move up and down within a certain range. This enables the support seat 03 to be height-adjusted according to the size of the drone and takeoff requirements, ensuring that the drone fuselage 07 can be stably placed in the arc-shaped support groove 05.
[0040] The support 03 is equipped with an arc-shaped support groove 05. The shape and size of the arc-shaped support groove 05 match the fuselage 07 of the fixed-wing UAV, ensuring that the UAV can be stably placed in it. The inner wall of the arc-shaped support groove 05 is arc-shaped, matching the arc shape of the lower surface of the fuselage 07.
[0041] The track groove 06 extends from the arc-shaped support groove 05 towards the base 01, providing a guide path for the limiting block 08 at the bottom of the fuselage 07. A limiting lock assembly is located within the track groove 06, cutting it into a blocking section 09 and a sliding section 10. When the UAV fuselage 07 is placed in the arc-shaped support groove 05, the limiting block 08 at its bottom inserts into the blocking section 09 and is locked by the limiting lock assembly. At this time, the limiting lock assembly is in a locked state, preventing the limiting block 08 from moving from the blocking section 09 to the sliding section 10, thus ensuring the UAV is in a stable state before takeoff. When takeoff is required, by operating the limiting lock assembly to enter the allowed state, the limiting block 08 can move along the sliding section 10 of the track groove 06, releasing the UAV for takeoff.
[0042] The working principle of this application is as follows: First, the fixed-wing UAV is placed in the arc-shaped support groove 05 of the support seat 03, ensuring that the limiting block 08 at the bottom of the fuselage 07 is correctly inserted into the blocking section 09 of the track groove 06. At this time, the limiting lock assembly is in the locked state, and the fuselage 07 of the UAV is restricted on the arc-shaped support groove 05.
[0043] The drone's power source (motor and propeller combination, etc.) is activated to increase power. At this time, the limit block 08 tends to move towards the taxiing section 10 due to the increased power. The stronger the power, the stronger this tendency. Once it is determined that the power has reached (or is about to reach) the takeoff conditions, the limit lock assembly is unlocked manually or remotely. Once unlocked, the limit block 08 can move freely within the taxiing section 10 of the track groove 06. The limit block 08 has sufficient power and speed when in or leaving the taxiing section 10, at which point the wings can be adjusted to achieve rapid takeoff.
[0044] In an optional embodiment, the limit lock assembly includes a movable block 11, an elastic element, and a drive disk 13. A receiving area is provided on the side of the track groove 06, and the receiving area communicates with the track groove 06. The movable block 11 is located within the receiving area, and the drive disk 13 is disposed within the receiving area. A protrusion 14 is provided on the drive disk 13, and the drive disk 13 cooperates with the protrusion 14 to control the movable block 11 to move towards the track groove 06. The elastic element is arranged between the movable block 11 and the inner wall of the receiving area, and the arrangement direction of the elastic element is parallel to the movement direction of the movable block 11. The drive assembly is also disposed on both sides of the track groove 06.
[0045] The movable block 11 is located within the receiving area on the side of the track groove 06. The movable block 11 can move in a specific direction within the receiving area, which is perpendicular to the extension direction of the track groove 06. When moving, the front end of the movable block 11 can extend out of the receiving area and be located in the track groove 06. At this time, the limiting block 08 can be restricted in the blocking section 09 to lock the limiting block 08 and prevent the limiting block 08 from moving towards the sliding section 10. In the unlocked state, the front end of the movable block 11 retracts towards the receiving area until the limiting block 08 is allowed to pass.
[0046] An elastic element is arranged between the movable block 11 and the inner wall of the receiving area, and the arrangement direction of the elastic element is parallel to the movement direction of the movable block 11. The function of the elastic element is to provide a continuous restoring force for the movable block 11, ensuring that the movable block 11 can remain in the initial position (i.e., the unlocked position) when no external force is applied by the drive disk 13.
[0047] The drive disk 13 is also located within the receiving area and is positioned above or to one side of the moving block 11. The drive disk 13 is provided with a protrusion 14, which interacts with the moving block 11 during rotation of the drive disk 13, pushing the moving block 11 toward the track groove 06 (the front end of the moving block 11 extends into the track groove 06).
[0048] In this embodiment, with the cooperation of the drive disk 13 and the protrusion 14, the moving block 11 moves towards the position of the track groove 06. The front end of the moving block 11 blocks the limiting block 08 at the bottom of the fuselage 07, preventing the limiting block 08 from moving towards the sliding section. When the forward momentum of the UAV continues to increase to meet the takeoff conditions (or close to the takeoff conditions), the drive disk 13 continues to rotate until the protrusion 14 leaves the bottom of the moving block 11. At this time, under the action of the elastic element, the moving block 11 quickly retracts towards the receiving area. After retraction, it no longer blocks the limiting block 08. At this time, the fuselage 07 can quickly move towards the sliding section under its forward momentum. At this time, it has sufficient power and speed to achieve rapid takeoff.
[0049] In an optional embodiment, a support column 15 is provided at the bottom of the receiving area. The support column 15 is used to abut the end of the movable block 11, the end of which is away from the track groove 06. In this embodiment, by providing the support column 15, the movement of the movable block 11 can be restricted, preventing the movable block 11 from moving excessively into the receiving area under the action of the elastic element, and also serving to support the bottom of the movable block 11.
[0050] In an optional embodiment, a display screen 17 is provided on the support 03, and a pressure sensor 16 is provided on the first end of the moving block 11. The pressure sensor 16 is located on the side of the first end facing the limiting block 08, and the pressure sensor 16 is electrically connected to the display screen 17.
[0051] The display screen 17 is embedded in the support base 03 and is located within the operator's line of sight for easy real-time information viewing. The display screen 17 is used to display data collected by the pressure sensor 16, as well as other relevant information, such as the drone status and takeoff countdown.
[0052] Pressure sensor 16 is mounted on the first end (front end) of movable block 11, and is located on the side of that end facing limit block 08. This ensures that the sensor can directly sense the pressure applied by limit block 08 to movable block 11. This pressure is captured by the sensor and converted into an electrical signal, which is then transmitted to display screen 17 for display.
[0053] After confirming that the pressure value of the limit block 08 on the moving block 11 of the drone has reached the preset range, which is based on the drone's own weight, such as 25N-31N if the weight is 30N, the operator can start to unlock the limit lock component.
[0054] In an optional embodiment, limit lock assemblies are provided on both sides of the track groove 06, and the first ends of the two limit lock assemblies are provided with the same magnetic pole. In this embodiment, the two limit lock assemblies are respectively provided on both sides of the track groove 06, and the front ends of the two moving blocks 11 in the two limit lock assemblies are aligned. Magnetic poles are provided on both front ends (first ends), and the magnetic poles are either N poles or S poles. The two opposite front ends are provided with the same magnetic poles (both N poles or both S poles). When the two moving blocks 11 cooperate to block the limit block 08, the distance between the two moving blocks 11 is short. Due to the presence of the same magnetic poles, there is a repulsive force between the two moving blocks 11. When the UAV reaches the takeoff condition (forward force is greater than its own weight), the protrusion 14 on the control drive disk 13 leaves the moving blocks 11. At this time, under the action of the repulsive force, the two moving blocks 11 quickly move in opposite directions, thereby opening the channel so that the limit block 08 can move to the sliding section.
[0055] In an optional embodiment, the elastic element is a spring 12.
[0056] In an optional embodiment, a turntable 18 is provided between the sleeve 02 and the base 01. In this embodiment, the turntable 18 enables the sleeve 02 to rotate, and the support 03 is connected to the sleeve 02, thus also enabling the support 03 to rotate, thereby adjusting the takeoff direction of the UAV.
[0057] In an optional embodiment, the arc-shaped support groove 05 forms an angle with the horizontal plane, with the angle being 10-45 degrees. In this embodiment, one end of the arc-shaped support groove 05 (the end closer to the nose of the drone) is inclined upwards at an angle of 10-45 degrees. As a result, when the limit lock assembly is unlocked, the drone itself is at a certain angle, rather than flying out horizontally, thereby further improving takeoff efficiency.
[0058] In an optional embodiment, the sleeve 02 and the extension 04 are detachably connected. In this embodiment, the detachable connection facilitates transportation and storage, and allows for the replacement of different sized support seats 03 on the same base 01. The detachable connection can be a snap-fit connection, a threaded connection, a bolt connection, etc.
[0059] In an optional embodiment, the inner wall of the arc-shaped support groove 05 is provided with a plurality of balls 19. In this embodiment, the plurality of balls 19 are in a free-moving state. When the body 07 is placed in the arc-shaped support groove 05, the balls 19 abut against the bottom of the body 07. By providing a plurality of balls 19, the friction between the body 07 and the arc-shaped support groove 05 can be reduced.
[0060] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A takeoff limiting device for a fixed-wing unmanned aerial vehicle, characterized in that, include: A base, a sleeve, a support seat, and a limit lock assembly; the sleeve is movably connected to the base, and the bottom of the support seat has an extension portion, which is fitted inside the sleeve; The support base is provided with an arc-shaped support groove that runs through both ends of the support base. The arc-shaped support groove is used to support the fuselage of the fixed-wing UAV. A track groove is provided in the arc-shaped support groove and extends from the arc-shaped support groove toward the base. The limiting lock assembly is disposed in the track groove and cuts the track groove to form a blocking section and a sliding section. When the fuselage is placed in the arc-shaped support groove, the limiting block at the bottom of the fuselage is inserted into the blocking section. The limiting lock assembly is used to prevent or allow the limiting block to move from the blocking section to the sliding section.
2. The takeoff limiting device according to claim 1, characterized in that, The limit lock assembly includes a moving block, an elastic element, and a drive disk. The side of the track groove is provided with a receiving area, which is connected to the track groove. The movable block is located within the receiving area, the drive disk is disposed within the receiving area, the drive disk is provided with a protrusion, the drive disk and the protrusion cooperate to control the movable block to move towards the track groove, the elastic element is arranged between the movable block and the inner wall of the receiving area, and the arrangement direction of the elastic element is parallel to the moving direction of the movable block.
3. The takeoff limiting device according to claim 2, characterized in that, A support column is provided at the bottom of the receiving area, the support column being used to abut the end of the movable block, the end being the end away from the track groove.
4. The takeoff limiting device according to claim 2, characterized in that, The support base is equipped with a display screen, and the first end of the movable block is equipped with a pressure sensor. The pressure sensor is located on the side of the first end facing the limiting block, and the pressure sensor is electrically connected to the display screen.
5. The takeoff limiting device according to claim 2, characterized in that, The limiting lock assembly is provided on both sides of the track groove, and the first end of the two limiting lock assemblies is provided with the same magnetic pole.
6. The takeoff limiting device according to claim 2, characterized in that, The elastic element is a spring.
7. The takeoff limiting device according to any one of claims 1 to 6, characterized in that, A turntable is provided between the sleeve and the base.
8. The takeoff limiting device according to any one of claims 1 to 6, characterized in that, The arc-shaped bearing groove forms an angle with the horizontal plane, and the angle is 10-45 degrees.
9. The takeoff limiting device according to any one of claims 1 to 6, characterized in that, The sleeve and the extension are detachably connected.
10. The takeoff limiting device according to any one of claims 1 to 6, characterized in that, The inner wall of the arc-shaped bearing groove is provided with a number of ball bearings.