Running unmanned aerial vehicle nose landing gear with damping device

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a taxiing unmanned aerial vehicle nose landing gear with a damping device, which comprises a mounting plate connected with an unmanned aerial vehicle body, a supporting sleeve is mounted below the mounting plate, a steering engine is arranged on one side of the supporting sleeve, the damping device is arranged at the top end of the supporting sleeve, and the damping device is arranged on the mounting plate. The inner side of the supporting sleeve is rotationally connected with a rotating sleeve, and a steering wheel is installed at the lower end of the rotating sleeve. An output shaft of the steering engine is connected with the damping device, and the damping device controls the rotating sleeve to rotate along the vertical shaft. In the taxiing take-off and landing operation process, yaw force transmitted by the steering wheels can be absorbed, it is guaranteed that the unmanned aerial vehicle can be kept relatively stable in the complex runway environment, and the take-off and landing safety of the unmanned aerial vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a front landing gear of a sliding unmanned aerial vehicle with a damping device. Background Art

[0002] Unmanned aircraft, also known as "drones", are unmanned aircraft that are controlled by radio remote control equipment and self-contained program control devices. There is no cockpit on the aircraft, but it is equipped with autopilots, program control devices and other equipment. Personnel on the ground, on ships or at the remote control station of the mother aircraft use radar and other equipment to track, locate, remotely control, telemeter and digitally transmit it. It can take off like an ordinary aircraft or be launched into the air with a booster rocket under radio remote control, or it can be taken into the air by the mother aircraft for flight. When recovered, it can land automatically in the same way as an ordinary aircraft landing process, or it can be recovered by remote control with a parachute or a blocking net. It can be used repeatedly many times. It is widely used in aerial reconnaissance, surveillance, communication, anti-submarine, electronic interference, etc.

[0003] Existing drones can be divided into two types, one is a vertical take-off and landing drone, and the other is a taxiing drone. In the prior art, the steering force transmission of the taxiing drone steering system is all rigid force transmission, and the requirements of the taxiing drone on the runway during use are not strict, and are also extremely important. When taking off on a bad runway, the flight risk brought by the traditional landing gear will increase sharply. Faced with the harsh runway environment, most taxiing drones with traditional landing gear can only stop and cannot meet the safety flight requirements; secondly, when the traditional landing gear takes off or lands in the harsh runway environment, the steering servo of the landing gear will be impacted to varying degrees, which will increase the service life of the servo or cause direct damage due to overload, and will also cause a large yaw due to a rigid collision with the runway, greatly increasing the risk of safe flight. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides a taxiing UAV front landing gear with a damping device, which can absorb the yaw force transmitted by the steering wheel during the taxiing take-off and landing operation, ensuring that the UAV can remain relatively stable in a complex runway environment, thereby improving the safety of the UAV take-off and landing.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, an embodiment of the present application provides a front landing gear of a taxiing UAV with a damping device, including a mounting plate connected to the UAV fuselage, a support sleeve is installed below the mounting plate, a steering servo is provided on one side of the support sleeve, a damping device is provided on the top of the support sleeve, the inner side of the support sleeve is rotatably connected to a rotating sleeve, and a steering wheel is installed at the lower end of the rotating sleeve; the output shaft of the steering servo is connected to the damping device, and the damping device controls the rotating sleeve to rotate along the vertical axis.

[0008] Preferably, three support arms are arranged at intervals on the circumferential side of the support sleeve, one end of the support arm is connected to the support sleeve, and the other end of the support arm is connected to the mounting plate.

[0009] Preferably, the damping device includes a driven damping disk rotatably mounted on the top of the supporting sleeve, the driven damping disk and the rotating sleeve are fixedly connected; an active damping disk is rotatably mounted on the upper side of the driven damping disk, and the active damping disk and the driven damping disk are rotatably connected via a connecting shaft; a power plate is integrally formed on a circumferential side wall of the active damping disk; a driving arm is fixedly mounted on the output shaft of the steering servo, and an end of the driving arm away from the rotating servo is rotatably connected to a connecting rod; an end of the connecting rod away from the driving arm is rotatably connected to the power plate, and the active damping disk is driven to rotate via the connecting rod when the driving arm swings; a first mounting groove is provided on a side surface of the active damping disk close to the driven damping disk, and a second mounting groove is provided on a side surface of the driven damping disk close to the active damping disk, the first mounting groove and the second mounting groove are arc-shaped grooves, and the connecting shaft is taken as the center of the circle; the first mounting groove and the second mounting groove are fitted together to form a damping cavity, and a damping member is provided in the damping cavity.

[0010] Preferably, the damping member comprises a compression spring or an elastic rubber column; both ends of the damping member abut against both ends of the first mounting groove and the second mounting groove.

[0011] Preferably, a plurality of positioning holes are formed at one end of the rotating sleeve close to the driven damping disk, a countersunk hole is formed on the driven damping disk, and bolts are passed through the countersunk holes to be threadedly connected to the positioning holes.

[0012] Preferably, a damper for buffering the axial direction is provided on the inner side of the rotating sleeve, and one end of the damper passes through an end away from the driven damping disc and is connected to the steering wheel.

[0013] Preferably, the damper includes a buffer sleeve slidably connected to the rotating sleeve, one end of the buffer sleeve is located in the rotating sleeve, and a center hole is opened at one end of the buffer sleeve located in the rotating sleeve; a support tube is slidably connected in the rotating sleeve, one end of the support tube passes through the center hole and is fixedly installed with the connecting shaft; the other end of the support tube is located in the buffer sleeve, and a limiting ring is integrally formed, and the diameter of the limiting ring is larger than the diameter of the center hole; a buffer spring is sleeved on the outer side of the support tube, one end of the buffer spring abuts the end of the buffer sleeve, and the other end abuts the bottom of the rotating sleeve; the end of the buffer sleeve away from the center hole extends out of the rotating sleeve and is connected to the steering wheel; a first connecting rod is rotatably connected to the outer side of the rotating sleeve, and a second connecting rod is rotatably provided at one end of the buffer sleeve close to the steering wheel, and the first connecting rod and the second connecting rod are rotatably connected; and the rotation axes at both ends of the first connecting rod and the second connecting rod are parallel to each other and perpendicular to the length direction of the buffer sleeve.

[0014] (III) Beneficial effects

[0015] The utility model provides a taxiing UAV front landing gear with a damping device. When the UAV is in the process of taxiing take-off and landing, the steering wheel is affected by the road conditions and is suddenly subjected to external force to generate yaw force. The yaw force transmitted back by the steering wheel will be absorbed by the damping device if it is greater than the preset yaw force when passing through the damping device. At the same time, the vibration in the vertical direction can be buffered by the provided damper. The device protects the steering servo to a certain extent, and at the same time, ensures that the UAV can remain relatively stable in a complex runway environment. During the taxiing take-off and landing operation, the safety of the UAV take-off and landing is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a front landing gear of a taxiing UAV with a damping device according to the utility model;

[0017] Figure 2 It is a schematic diagram of a protruding damping device in the front landing gear of a taxiing UAV with a damping device according to the utility model;

[0018] Figure 3 This is a cross-sectional view of a front landing gear of a taxiing UAV with a damping device according to the utility model;

[0019] Figure 4 for Figure 3 A magnified view of the structure in the middle;

[0020] Figure 5 The utility model is a top view of a protruding driven damping disc in the front landing gear of a taxiing UAV with a damping device.

[0021] Markings in the accompanying drawings:

[0022] 100, mounting plate; 200, supporting sleeve; 210, supporting arm; 300, rotating sleeve; 310, positioning hole; 400, damping device; 410, driven damping disc; 411, second mounting groove; 412, countersunk hole; 420, active damping disc; 421, first mounting groove; 430, connecting shaft; 440, power plate; 450, driving arm; 460, connecting rod; 470, damping element; 500, steering wheel; 600, damper; 610, buffer sleeve; 611, center hole; 620, supporting tube; 621, limiting ring; 630, buffer spring; 640, first connecting rod; 650, second connecting rod; 700, steering servo. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example

[0025] The utility model provides a front landing gear of a taxiing UAV with a damping device, see Figure 1-Figure 5 , including a mounting plate 100 connected to the drone body, wherein the mounting plate 100 is arranged horizontally and can be fixed to the bottom of the drone body by bolts or other means.

[0026] A support sleeve 200 is installed below the mounting plate 100. A steering servo 700 is provided on one side of the support sleeve 200. A damping device 400 is provided on the top of the support sleeve 200. The inner side of the support sleeve 200 is rotatably connected to the rotating sleeve 300. A steering wheel 500 is installed on the lower end of the rotating sleeve 300. The output shaft of the steering servo 700 is connected to the damping device 400. The damping device 400 controls the rotating sleeve 300 to rotate along the vertical axis. When the rotating sleeve 300 rotates in the vertical direction, the steering wheel 500 can be controlled to rotate.

[0027] Three support arms 210 are arranged at intervals on the circumferential side of the support sleeve 200, one end of the support arm 210 is connected to the support sleeve 200, and the other end is connected to the mounting plate 100. A certain gap is formed between the support sleeve 200 and the mounting plate 100, which can be used to install the damping device 400.

[0028] The damping device 400 includes a driven damping disc 410 rotatably mounted on the top of the support sleeve 200, and the driven damping disc 410 is fixedly connected to the rotating sleeve 300. An active damping disc 420 is rotatably mounted on the upper side of the driven damping disc 410, and the active damping disc 420 and the driven damping disc 410 are rotatably connected via a connecting shaft 430. A power plate 440 is integrally formed on the circumferential side wall of the active damping disc 420; a driving arm 450 is fixedly mounted on the output shaft of the steering servo 700, and a connecting rod 460 is rotatably connected to the end of the driving arm 450 away from the steering servo; an end of the connecting rod 460 away from the driving arm 450 is rotatably connected to the power plate 440, and when the driving arm 450 swings, the active damping disc 420 is driven to rotate via the connecting rod 460.

[0029] A first mounting groove 421 is provided on one side of the active damping disc 420 close to the driven damping disc 410, and a second mounting groove 411 is provided on one side of the driven damping disc 410 close to the active damping disc 420. The first mounting groove 421 and the second mounting groove 411 are arc-shaped grooves, and the connecting shaft 430 is the center of the circle. The first mounting groove 421 and the second mounting groove 411 fit together to form a damping cavity, and a damping member 470 is provided in the damping cavity. When the driven damping disc 410 rotates under the action of an external force, the damping member 470 in the damping cavity can play a damping effect, reducing the impact force on the steering servo 700.

[0030] The damping member 470 includes a compression spring or an elastic rubber column; both ends of the damping member 470 abut against both ends of the first mounting groove 421 and the second mounting groove 411. When the active damping disc 420 rotates, the first mounting groove 421 and the second mounting groove 411 are relatively misaligned, and the damping member 470 is squeezed to a certain extent to drive the driven damping disc 410 to rotate.

[0031] When the steering wheel 500 encounters an uneven ground during rotation, the steering wheel 500 will suddenly vibrate or suddenly swing left and right. During this process, due to the effect of the damping member 470, the influence on the steering servo 700 will be reduced to a certain extent.

[0032] A plurality of positioning holes 310 are formed at one end of the rotating sleeve 300 close to the driven damping disc 410 . A countersunk hole 412 is formed on the driven damping disc 410 , and a bolt passes through the countersunk hole 412 to be threadedly connected with the positioning hole 310 .

[0033] A damper 600 for buffering the axial direction is disposed inside the rotating sleeve 300 . One end of the damper 600 passes through an end away from the driven damping disc 410 and is connected to the steering wheel 500 .

[0034] The damper 600 includes a buffer sleeve 610 slidably connected to the rotating sleeve 300 . One end of the buffer sleeve 610 is located in the rotating sleeve 300 . A center hole 611 is formed at one end of the buffer sleeve 610 located at the rotating sleeve 300 .

[0035] The support tube 620 is slidably connected inside the rotating sleeve 300, one end of the support tube 620 passes through the center hole 611 and is fixedly installed with the connecting shaft 430; the other end of the support tube 620 is located in the buffer sleeve 610, and a stop ring 621 is integrally formed, and the diameter of the stop ring 621 is larger than the diameter of the center hole 611. A buffer spring 630 is sleeved on the outside of the support tube 620, one end of the buffer spring 630 abuts against the end of the buffer sleeve 610, and the other end abuts against the bottom of the rotating sleeve 300.

[0036] The end of the buffer sleeve 610 away from the center hole 611 extends out of the rotating sleeve 300 and is connected to the steering wheel 500; the first connecting rod 640 is rotatably connected to the outer side of the rotating sleeve 300, and the second connecting rod 650 is rotatably provided at the end of the buffer sleeve 610 close to the steering wheel 500, and the first connecting rod 640 and the second connecting rod 650 are rotatably connected; and the rotation axes at both ends of the first connecting rod 640 and the second connecting rod 650 are parallel to each other and perpendicular to the length direction of the buffer sleeve 610. Through the connection of the first connecting rod 640 and the second connecting rod 650, when the outer rotating sleeve 300 rotates, the buffer sleeve 610 will be driven to rotate synchronously. At the same time, when the steering wheel 500 receives vibration, it can slide along the vertical direction within a certain range, and the buffer spring 630 has a buffering effect.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the absence of conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0039] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A front landing gear of a taxiing UAV with a damping device, characterized in that: It comprises a mounting plate (100) connected to a fuselage of a drone, a supporting sleeve (200) being mounted below the mounting plate (100), A steering servo (700) is provided on one side of the support sleeve (200), and a damping device (400) is provided on the top end of the support sleeve (200); The inner side of the support sleeve (200) is rotatably connected to the rotating sleeve (300), and a steering wheel (500) is installed at the lower end of the rotating sleeve (300); the output shaft of the steering servo (700) is connected to the damping device (400), and the damping device (400) controls the rotating sleeve (300) to rotate along a vertical axis.

2. The front landing gear of a taxiing UAV with a damping device according to claim 1, characterized in that: Three support arms (210) are arranged at intervals on the circumferential side of the support sleeve (200); one end of the support arm (210) is connected to the support sleeve (200), and the other end is connected to the mounting plate (100).

3. The front landing gear of a taxiing UAV with a damping device according to claim 1, characterized in that: The damping device (400) comprises a driven damping disc (410) rotatably mounted on the top end of the supporting sleeve (200), and the driven damping disc (410) and the rotating sleeve (300) are fixedly connected; An active damping disc (420) is rotatably mounted on the upper side of the driven damping disc (410), and the active damping disc (420) and the driven damping disc (410) are rotatably connected via a connecting shaft (430); a power plate (440) is integrally formed on a circumferential side wall of the active damping disc (420); A driving arm (450) is fixedly mounted on the output shaft of the steering servo (700); one end of the driving arm (450) away from the rotation servo is rotatably connected to a linkage rod (460); one end of the linkage rod (460) away from the driving arm (450) is rotatably connected to the power plate (440); when the driving arm (450) swings, the active damping disc (420) is driven to rotate via the linkage rod (460); A first mounting groove (421) is provided on a side surface of the active damping disc (420) close to the driven damping disc (410), and a second mounting groove (411) is provided on a side surface of the driven damping disc (410) close to the active damping disc (420). The first mounting groove (421) and the second mounting groove (411) are arc-shaped grooves with the connecting shaft (430) as the center of the circle. The first mounting groove (421) and the second mounting groove (411) are fitted together to form a damping cavity, and a damping member (470) is arranged in the damping cavity.

4. The front landing gear of a taxiing UAV with a damping device according to claim 3, characterized in that: The damping member (470) comprises a compression spring or an elastic rubber column; both ends of the damping member (470) abut against both ends of the first installation groove (421) and the second installation groove (411).

5. The front landing gear of a taxiing UAV with a damping device according to claim 3, characterized in that: A plurality of positioning holes (310) are formed at one end of the rotating sleeve (300) close to the driven damping disc (410), and a countersunk hole (412) is formed on the driven damping disc (410), and a bolt passes through the countersunk hole (412) and is threadedly connected to the positioning hole (310).

6. The front landing gear of a taxiing UAV with a damping device according to claim 3, characterized in that: A damper (600) for buffering the axial direction is arranged on the inner side of the rotating sleeve (300); one end of the damper (600) passes through an end away from the driven damping disc (410) and is connected to the steering wheel (500).

7. The front landing gear of a taxiing UAV with a damping device according to claim 6, characterized in that: The damper (600) comprises a buffer sleeve (610) slidably connected to the rotating sleeve (300), one end of the buffer sleeve (610) is located in the rotating sleeve (300), and a center hole (611) is formed at one end of the buffer sleeve (610) located in the rotating sleeve (300); A support tube (620) is slidably connected inside the rotating sleeve (300), one end of the support tube (620) passes through the central hole (611) and is fixedly mounted on the connecting shaft (430); The other end of the support tube (620) is located inside the buffer sleeve (610) and is integrally formed with a limiting ring (621), wherein the diameter of the limiting ring (621) is greater than the diameter of the center hole (611); A buffer spring (630) is sleeved on the outer side of the support tube (620), one end of the buffer spring (630) abuts against the end of the buffer sleeve (610), and the other end abuts against the bottom of the rotating sleeve (300); One end of the buffer sleeve (610) away from the central hole (611) extends out of the rotating sleeve (300) and is connected to the steering wheel (500); A first connecting rod (640) is rotatably connected to the outer side of the rotating sleeve (300), a second connecting rod (650) is rotatably provided at one end of the buffer sleeve (610) close to the steering wheel (500), and the first connecting rod (640) and the second connecting rod (650) are rotatably connected; Furthermore, the rotation axes at both ends of the first connecting rod (640) and the second connecting rod (650) are parallel to each other and perpendicular to the length direction of the buffer sleeve (610).

Images