CN211766288U - Vertical forced landing protection device for unmanned aerial vehicle - Google Patents

Abstract

The utility model discloses a perpendicular compel protection device that lands of unmanned aerial vehicle, including the unmanned aerial vehicle body, the lower extreme middle part fixedly connected with fixing base of unmanned aerial vehicle body, the inside of fixing base is provided with the drawing mechanism, the right-hand member swing joint of drawing mechanism has the link, the equal fixedly connected with connecting rod in both ends around the link, the lower extreme fixedly connected with buffer gear of connecting rod, the lower extreme fixedly connected with protection mechanism of fixing base, the anterior fixed mounting of lower extreme of unmanned aerial vehicle body has the guard box. A perpendicular compel protection device that lands of unmanned aerial vehicle, pack up and open through the remote control to the frame that falls, the improvement of very big degree unmanned aerial vehicle is at the flight safety of overhead, increases its flight or descending security performance, because the hollow tube material that the structural material adopted basically, the reduction of very big degree unmanned aerial vehicle's flight weight to reach the continuous duration of unmanned aerial vehicle's flight in-process.

Description

A UAV vertical forced landing protection device

technical field

The utility model relates to the field of unmanned aerial vehicles, in particular to a vertical forced landing protection device of an unmanned aerial vehicle.

Background technique

UAVs can be divided into military and civilian according to the application field. In terms of military use, UAVs are divided into reconnaissance aircraft and target aircraft. In terms of civilian use, the application of UAV industry is the real need of UAV; currently, it is used in aerial photography, agriculture, plant protection, miniature selfie, express transportation, disaster rescue, observation of wild animals, monitoring of infectious diseases, surveying and mapping, news reporting, and electric power inspection. , disaster relief, film and television shooting, manufacturing romance and other fields have greatly expanded the use of drones themselves, and developed countries are also actively expanding industry applications and developing drone technology.

After retrieval, the Chinese Patent Publication No. CN201820958532.X discloses a UAV vertical forced landing protection device, including a protective bracket, the top of the protective bracket is fixedly connected to both sides of the bottom end of the UAV, and the UAV is fixedly connected. An installation box is fixedly connected at the central position of the bottom end, and a main support rod is movably connected in the middle of the inner bottom end of the installation box through a hydraulic cylinder. The utility model has the advantages of safety protection and realizing the stability and fixation of the drone on the ground at different heights by providing the structure of rubber buffer pad, shock absorber, anti-tilt rod, connecting rod, main support rod and auxiliary support rod. The above-mentioned patent has the following disadvantages : Because the protective bracket is fixedly connected to the drone body, the long protective bracket of the drone will interfere with some wires or branches during the flight or landing process, which is not conducive to the flight safety of the drone. There is a hydraulic cylinder inside the drone, and the hydraulic cylinder itself is relatively heavy, which is very unfavorable for the flight of the drone, increasing the weight of the drone, and at the same time affecting the speed of the drone and increasing the consumption of the drone. At the same time, because there are several protective brackets, the contact area with the ground is too small, and it is difficult to maintain the balance with the ground during the descent. In view of this, we propose a vertical forced landing protection device for UAV.

Utility model content

The main purpose of the present invention is to provide a vertical forced landing protection device for unmanned aerial vehicles, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a vertical forced landing protection device for an unmanned aerial vehicle, comprising an unmanned aerial vehicle body; A stretching mechanism is arranged inside, a connecting frame is movably connected to the right end of the stretching mechanism, a connecting rod is fixedly connected to the front and rear ends of the connecting frame, and a buffer mechanism is fixedly connected to the lower end of the connecting rod. A protection mechanism is fixedly connected to the lower end of the base, a protection box is fixedly installed at the front of the lower end of the drone body, a biaxial motor is fixedly installed inside the protection box, and a fixed connection is fixed to the lower end of the drone body piece.

Preferably, a drive gear is fixedly connected to the output shafts of the left end and the right end of the biaxial motor, the rear end of the drive gear is meshed with a transmission gear, and the rear end of the transmission gear is fixedly connected with a transmission shaft, so The rear end of the transmission shaft penetrates the protective box and is connected with the bearing inside the fixed block. The front and rear of the surface of the transmission shaft are fixedly connected with rotating long gears, and the lower ends of the rotating long gears are meshed with half gears. The surface of the half-gear is fixedly connected to the upper end of the connecting rod, the middle bearing of the outer surface of the transmission shaft is connected with a bearing sleeve, and the lower end of the bearing sleeve is fixedly connected to the upper end of the connecting frame.

Preferably, the main structure of the buffer mechanism has a fixed plate, two sliding columns are inserted and connected inside the fixed plate, and the lower ends of the sliding columns are fixedly connected with a falling plate, and the surfaces of the sliding columns are sleeved with the first sliding column. The first spring is located between the fixing plate and the falling plate, and the left end of the fixing plate is fixedly connected to the lower end of the connecting rod.

Preferably, the buffer mechanism is provided with two groups, and the two groups of buffer mechanisms are symmetrically distributed on the left and right of the center of the drone body, and the interior of the landing plate is in an arc structure.

Preferably, the main structure of the protection mechanism is a circular seat, the inner of the circular seat is slidably connected with a buffer column, the lower end of the buffer column penetrates the circular seat and is fixedly connected with a buffer plate, and the middle of the lower end of the buffer plate is fixedly installed There is a laser positioning light, the upper end of the buffer plate is fixedly connected with a second spring, the upper end of the second spring is fixedly connected to the lower end of the circular seat, and the upper end of the circular seat is fixedly connected to the lower end of the fixed seat.

Preferably, the main mechanism of the stretching mechanism includes a fixed shaft and a stretching bar, two rotating sleeves are connected to the outer surface bearing of the fixed shaft, and the outer surfaces of the rotating sleeves are fixedly connected to one end of the stretching bar, and The other end of the stretching strip is movably connected inside the middle of the connecting frame through a rotating shaft.

Compared with the prior art, the utility model has the following beneficial effects:

1. The biaxial motor will control the rotation of the two transmission shafts through the transmission of the gears, and the rotation of the transmission shafts will control the rotation of the connecting rod and the connecting frame through the action of the gears, so as to retract and open the landing frame. When the UAV is forced to land at a certain height, the landing gear can be opened, so that the remote control of the UAV landing gear can be lifted and retracted. Wire branches cause the drone to lose its balance and roll over, which greatly improves the flight safety of the drone over the sky and increases the safety of its flight or landing.

2. Through the laser positioning light, the laser is irradiated on the ground, so that the vertical landing position of the drone can be determined in advance, and a certain time is provided to clear the debris in the area in advance, so as to provide a good landing environment. When there are obstacles that cannot be cleared, the first spring on the landing plate can also be used to achieve a traditional buffer landing.

3. Because some structural materials are basically made of hollow tube materials, the flight weight of the UAV is greatly reduced, so as to achieve the efficient flight of the UAV and increase the continuous endurance during the flight of the UAV.

Description of drawings

Fig. 1 is the bottom view structure schematic diagram of a kind of UAV vertical forced landing protection device of the present utility model;

2 is a schematic diagram of the interior of a protection box of a vertical forced landing protection device for an unmanned aerial vehicle of the present invention;

3 is a schematic diagram of the overall structure of the landing gear of a UAV vertical forced landing protection device of the present invention;

4 is a schematic diagram of a buffer mechanism of a vertical forced landing protection device for an unmanned aerial vehicle of the present invention;

5 is a schematic diagram of a protection mechanism and a stretching mechanism of a vertical forced landing protection device for an unmanned aerial vehicle of the present invention.

In the figure: 1. UAV body; 2. Protection box; 3. Buffer mechanism; 31. Landing plate; 32. Fixed plate; 33. Sliding column; 34. First spring; 4. Protection mechanism; 41. Buffer plate ; 42, the second spring; 43, the round seat; 44, the buffer column; 45, the laser positioning light; 5, the biaxial motor; 6, the driving gear; 7, the fixed seat; 8, the stretching mechanism; ;82, rotary sleeve; 83, fixed shaft; 9, transmission gear; 10, transmission shaft; 11, rotating long gear; 12, bearing sleeve; 13, connecting frame; 14, connecting rod; 15, fixed block; 16, half gear.

Detailed ways

In order to make the technical means, creation features, achievement goals and effects of the present invention easy to understand and understand, the present invention will be further described below with reference to the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" The orientation or positional relationship indicated by "" etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation is therefore not to be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "provided with", "connected", etc., should be understood in a broad sense, for example, "connected" may be a fixed The connection can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

As shown in Figures 1-5, a UAV vertical forced landing protection device includes a UAV body 1, a fixing base 7 is fixedly connected to the middle of the lower end of the UAV body 1, and a stretching mechanism is arranged inside the fixing base 7 8. The right end of the stretching mechanism 8 is movably connected with a connecting frame 13, the front and rear ends of the connecting frame 13 are fixedly connected with a connecting rod 14, the lower end of the connecting rod 14 is fixedly connected with a buffer mechanism 3, and the lower end of the fixed seat 7 is fixedly connected with a Protection mechanism 4, a protection box 2 is fixedly installed at the front of the lower end of the drone body 1, a biaxial motor 5 is fixedly installed inside the protection box 2, and a fixing block 15 is fixedly connected to the lower end of the drone body 1.

A drive gear 6 is fixedly connected to the output shafts of the left and right ends of the biaxial motor 5. The rear end of the drive gear 6 is meshed with a transmission gear 9. The rear end of the transmission gear 9 is fixedly connected with a transmission shaft 10. The rear end penetrates through the protective box 2 and is bearing connected to the interior of the fixed block 15. The front and rear surfaces of the transmission shaft 10 are fixedly connected with a rotating long gear 11. The lower end of the rotating long gear 11 is meshed with a half gear 16. The half gear 16 The outer surface of the transmission shaft 10 is fixedly connected to the upper end of the connecting rod 14. The bearing sleeve 12 is connected to the middle bearing of the outer surface of the transmission shaft 10. The lower end of the bearing sleeve 12 is fixedly connected to the upper end of the connecting frame 13. , realizes biaxial rotation, and drives the contraction or opening of the two landing gears; the main structure of the buffer mechanism 3 has a fixed plate 32, the interior of the fixed plate 32 is interspersed with two sliding columns 33, and the lower end of the sliding column 33 is fixedly connected with a landing gear. A first spring 34 is sleeved on the surface of the plate 31 and the sliding column 33, and the first spring 34 is located between the fixed plate 32 and the falling plate 31. The left end of the fixed plate 32 is fixedly connected to the lower end of the connecting rod 14 through the falling plate 31. Contact with the ground is buffered by the first spring 34 to reduce the impact force of the drone during forced landing, providing the drone with an efficient and safe protection effect, and the lower ends of the landing plate 31 and the buffer plate 41 are fixedly installed with rubber The cushioning mechanism 3 is provided with two groups, and the two groups of cushioning mechanisms 3 are symmetrically distributed on the left and right of the center of the drone body 1. The interior of the landing plate 31 is in an arc structure, increasing the number of unmanned aerial vehicles. The bottom of the aircraft is the contact area of the ground, so as to better achieve the smooth landing effect of the drone and play a certain protective function; the main structure of the protection mechanism 4 has a circular seat 43, and the inner sliding connection of the circular seat 43 is provided with a buffer column 44. The lower end of the buffer column 44 penetrates the circular seat 43 and is fixedly connected with the buffer plate 41. The laser positioning light 45 is fixedly installed in the middle of the lower end of the buffer plate 41, and the upper end of the buffer plate 41 is fixedly connected with a second spring 42. The second spring 42 The upper end of the round seat 43 is fixedly connected to the lower end of the round seat 43, and the upper end of the round seat 43 is fixedly connected to the lower end of the fixed seat 7; For the two rotating sleeves 82 , the outer surfaces of the rotating sleeves 82 are fixedly connected to one end of the stretching bar 81 , and the other end of the stretching bar 81 is movably connected to the middle of the connecting frame 13 through the rotating shaft.

It should be noted that the present utility model is a vertical forced landing protection device for unmanned aerial vehicles. The startup of the dual-axis motor 5 is controlled by remote control. The rotation of 10 will control the rotation of the connecting rod 14 and the connecting frame 13 through the action of the gear, so as to play the role of retracting and opening the landing gear. When the drone falls vertically to a certain height, the landing gear can be opened. The traditional drone is in the sky, and it is impossible to predict the landing position of the drone, but this drone can irradiate the laser on the ground through the laser positioning light 45 to realize the early confirmation of the position and Debris removal is carried out in the area to provide a good landing environment. When there are obstacles that cannot be cleaned, the first spring 34 on the landing plate 31 can also be used for effective buffer landing. If the landing environment occurs, the ground is very complex and the slope is high. There are a lot of miscellaneous rocks. You can manually locate the position of the light 45 by laser, place a cylindrical object, such as some logs, and insert it into the ground to fix it. The bottom middle of the drone is also provided with a landing protection device and a buffer plate 41. In contact with the log, a simple artificial landing buffer platform is provided for the unmanned aerial vehicle in harsh conditions, and the second spring 42 can reduce the impact force on the aerial vehicle during the descending process.

The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention There will also be various changes and improvements in the new model, which all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides an unmanned aerial vehicle vertical forced landing protection device, includes unmanned aerial vehicle body (1), its characterized in that: lower extreme middle part fixedly connected with fixing base (7) of unmanned aerial vehicle body (1), the inside of fixing base (7) is provided with stretching mechanism (8), the right-hand member swing joint of stretching mechanism (8) has link (13), the equal fixedly connected with connecting rod (14) in both ends around link (13), the lower extreme fixedly connected with buffer gear (3) of connecting rod (14), the lower extreme fixedly connected with protection machanism (4) of fixing base (7), the anterior fixed mounting of lower extreme of unmanned aerial vehicle body (1) has guard box (2), the inside fixed mounting of guard box (2) has double-shaft motor (5), the lower extreme fixedly connected with fixed block (15) of unmanned aerial vehicle body (1).

2. The unmanned aerial vehicle vertical forced landing protection device of claim 1, wherein: equal fixedly connected with drive gear (6) on the output shaft of the left end of biax motor (5) and right-hand member, the rear end of drive gear (6) all meshes has drive gear (9), the rear end fixedly connected with transmission shaft (10) of drive gear (9), the rear end of transmission shaft (10) runs through guard box (2) and the inside of bearing connection at fixed block (15), the surperficial front portion of transmission shaft (10) and the rotatory long gear (11) of the equal fixedly connected with in back, the lower extreme of rotatory long gear (11) all meshes has half gear (16), the fixed surface of half gear (16) is connected in the upper end of connecting rod (14), the surface middle part bearing of transmission shaft (10) is connected with bearing housing (12), the lower extreme fixed connection of bearing housing (12) is in the upper end of link (13).

3. The unmanned aerial vehicle vertical forced landing protection device of claim 1, wherein: buffer gear (3) major structure has fixed plate (32), the inside interlude of fixed plate (32) is connected with two slip posts (33), and the lower extreme fixedly connected with of slip post (33) falls board (31), first spring (34) have all been cup jointed on the surface of slip post (33), and first spring (34) are located fixed plate (32) and fall between board (31), the left end fixed connection of fixed plate (32) is at the lower extreme of connecting rod (14).

4. The unmanned aerial vehicle vertical forced landing protection device of claim 3, wherein: buffer gear (3) are provided with two sets ofly, and two sets of buffer gear (3) distribute with the central bilateral symmetry of unmanned aerial vehicle body (1), the inside of board (31) that falls is the arc structure.

5. The unmanned aerial vehicle vertical forced landing protection device of claim 1, wherein: protection mechanism (4) major structure has round seat (43), the inside sliding connection of round seat (43) has buffering post (44), the lower extreme of buffering post (44) runs through round seat (43) and fixedly connected with buffer board (41), the lower extreme middle part fixed mounting of buffer board (41) has laser positioning lamp (45), the upper end fixedly connected with second spring (42) of buffer board (41), the upper end fixed connection of second spring (42) is at the lower extreme of round seat (43), the upper end fixed connection of round seat (43) is at the lower extreme of fixing base (7).

6. The unmanned aerial vehicle vertical forced landing protection device of claim 1, wherein: drawing mechanism (8) main mechanism has fixed axle (83) and tensile strip (81), the surface bearing of fixed axle (83) is connected with two and changes cover (82), the equal fixed connection in tensile strip (81) one end of surface of commentaries on classics cover (82), and the other end of tensile strip (81) is inside in the middle of link (13) through pivot swing joint.

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