Multipurpose unmanned aerial vehicle undercarriage

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, and discloses a multipurpose unmanned aerial vehicle undercarriage which comprises a fuselage body and a rear undercarriage assembly, a rear storage cabin is formed in the middle of the fuselage body, the rear undercarriage assembly is arranged in the rear storage cabin, hinge grooves are formed in the two ends of the interior of the rear storage cabin, and the hinge grooves are connected with the fuselage body. And a hinge block is rotationally connected into the hinge groove. The rear landing gear assembly can drive the roller shaft and the middle hinge lug to rotate through the connecting rod body under the driving action of the hydraulic oil cylinder, the middle hinge lug drives the rear landing gear to rotate through the upper mounting lug and the folding shaft, and then the technical effect that the rear landing gear is folded into the rear storage cabin is achieved. After the undercarriage is contracted into the fuselage, the shape of the aircraft is smoother, air resistance can be obviously reduced during high-speed flight, and the reduction of the resistance means that more power can be saved for maintaining flight, prolonging the flight time or improving the flight speed.

Description

TECHNICAL FIELD

[0001] The utility model relates to unmanned plane technical field especially relates to multipurpose unmanned plane landing gear. BACKGROUND

[0002] Unmanned plane, namely unmanned aircraft, is a kind of unmanned aircraft that is controlled by radio remote control equipment or preset program control device, and can be wholly or partially self-operated by vehicle-mounted computer. With the advantages of compact structure, small size, high popularity, flexible maneuvering and stable flight, unmanned plane is widely applied in aerial photography, agricultural plant protection, miniature self-portrait, express delivery, disaster rescue, wild animal observation, infectious disease monitoring, surveying and mapping, news reporting, power patrol, film and television shooting and creating romantic atmosphere, etc., greatly expanding its application range. Usually, unmanned plane is equipped with fixed landing gear at the bottom to support the body, facilitating take-off and landing.

[0003] At present, the unmanned plane in the market is large in quality, and its landing gear is generally fixed structure arranged on both sides, although there is a triangular sliding landing gear, but it cannot be folded and retracted, which not only increases the wind resistance in the flight process of unmanned plane, but also reduces the stability of the body, so the market needs a multipurpose unmanned plane landing gear to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a multipurpose unmanned plane landing gear.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: including body and rear landing gear assembly, the middle part of the body is provided with a rear storage cabin, the rear landing gear assembly is arranged in the rear storage cabin, the rear storage cabin is provided with a hinge slot at both ends, the hinge slot is rotatably connected with a hinge block, the hinge block is fixedly connected with a hydraulic oil cylinder, the end of the hydraulic oil cylinder away from the hinge block is hingedly connected with a connecting rod shaft, the connecting rod shaft is fixedly connected with a connecting rod body, the end of the connecting rod body away from the connecting rod shaft is fixedly connected with a roller shaft, and the roller shaft is used to drive the folding rotation of the rear landing gear assembly.

[0006] As a further description of the above technical scheme:

[0007] The rear landing gear assembly includes a middle hinge ear, an upper mounting ear, a folding shaft and a rear landing wheel, the lower part of the upper mounting ear is fixedly connected with the middle hinge ear, the upper part of the upper mounting ear is fixedly connected with the folding shaft, and the rear landing wheel is arranged in the upper mounting ear and rotatably connected with the folding shaft.

[0008] As a further description of the above technical scheme:

[0009] The middle hinged ear is fixedly connected with a limiting protrusion on the side surface.

[0010] As a further description of the above technical solution:

[0011] The side surface of the rear storage cabin is fixedly connected with a limiting recess, and the limiting recess is clamped with the limiting protrusion.

[0012] As a further description of the above technical solution:

[0013] The roller shaft penetrates through the lower mounting ear, and the roller shaft is rotationally connected with the lower mounting ear.

[0014] As a further description of the above technical solution:

[0015] The roller shaft penetrates through one end of the connecting rod body, and the lower mounting ear is arranged between the middle hinged ear and the connecting rod body.

[0016] As a further description of the above technical solution:

[0017] The inside of the rear storage cabin is provided with a cabin sliding groove, and the cabin sliding groove is provided with an automatic retracting cabin plate for closing the cabin, and the front part of the fuselage body is provided with a front storage cabin, and the inside of the front storage cabin is provided with a front landing gear.

[0018] As a further description of the above technical solution:

[0019] The utility model has the advantages of the following beneficial effects:

[0020] 1. In the utility model, the rear landing gear assembly is driven by the hydraulic cylinder to rotate the roller shaft and the middle hinged ear through the connecting rod body, the middle hinged ear drives the rear landing wheel to rotate through the upper mounting ear and the folding shaft, and the rear landing gear is retracted into the rear storage cabin, the appearance of the aircraft is smoother, the air resistance is significantly reduced during high-speed flight, the reduced resistance means that more power can be saved for maintaining flight, prolonging flight time or increasing flight speed.

[0021] 2. In the utility model, the front landing gear and the rear landing gear assembly can be retracted into the storage cabin, the retractable landing gear design changes the structure, so that the unmanned aerial vehicle is not directly impacted by the airflow during flight, and in complex weather conditions, such as side wind, the protruding landing gear may vibrate or interfere with the flight attitude due to uneven airflow, and the retractable landing gear can reduce such interference and make the flight attitude of the unmanned aerial vehicle more stable, which is very important for tasks that require high-precision flight control, such as shooting stable pictures or precise mapping during aerial photography. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A three-dimensional structure diagram of the multi-purpose unmanned aerial vehicle landing gear according to the present application Figure 1 ;

[0023] Figure 2 A three-dimensional structure diagram of the multi-purpose unmanned aerial vehicle landing gear according to the present application Figure 2 ;

[0024] Figure 3 A three-dimensional structure diagram of the multi-purpose unmanned aerial vehicle landing gear according to the present application Figure 2 ;

[0025] Figure 4 A three-dimensional structure diagram of the multi-purpose unmanned aerial vehicle landing gear according to the present application

[0026] LEGEND:

[0027] 1, body; 2, rear storage cabin; 3, lower mounting ear; 4, middle hinge ear; 5, upper mounting ear; 61, roller shaft; 62, folding shaft; 7, rear landing wheel; 8, hydraulic oil cylinder; 9, hinge block; 10, connecting rod shaft; 11, connecting rod body; 12, limiting convex block; 13, limiting concave block; 14, cabin sliding groove; 15, front landing gear; 16, front storage cabin. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0029] Referring to Figures 1-4The utility model provides a kind of embodiment of multipurpose unmanned vehicle landing gear, including fuselage body 1 and rear landing gear assembly, the middle part of fuselage body 1 is equipped with rear storage cabin 2, rear landing gear assembly is located in rear storage cabin 2, the inside both ends of rear storage cabin 2 are equipped with hinged groove, hinged groove is rotatably connected with hinged block 9, hinged block 9 is fixedly connected with hydraulic oil cylinder 8, one end of hydraulic oil cylinder 8 away from hinged block 9 is hinged with connecting rod shaft 10, connecting rod shaft 10 is fixedly connected with connecting rod body 11, one end of connecting rod body 11 away from connecting rod shaft 10 is fixedly connected with gyro wheel shaft 61, gyro wheel shaft 61 is used to drive the folding rotation of rear landing gear assembly, rear landing gear assembly includes middle hinged lug 4, upper mounting lug 5, folding shaft 62 and rear landing wheel 7, the lower part of upper mounting lug 5 is fixedly connected with middle hinged lug 4, the upper part of upper mounting lug 5 is fixedly connected with folding shaft 62, rear landing wheel 7 is located in upper mounting lug 5 and is rotatably connected with folding shaft 62, front landing gear 15 and rear landing gear assembly can be retracted into storage cabin, retractable landing gear design, structure conversion, so that unmanned vehicle will not be directly impacted by airflow in the process of flight, in complex weather conditions, such as when encountering crosswind, etc., protruding landing gear can vibrate or interfere with flight attitude due to uneven airflow, and retractable landing gear can reduce this interference, so that the flight attitude of unmanned vehicle is more stable, which is very critical for tasks requiring high-precision flight control, such as shooting stable pictures or precise mapping when aerial photography.

[0030] The end of middle hinged lug 4 away from upper mounting lug 5 is fixedly connected with gyro wheel shaft 61, the side surface of middle hinged lug 4 is fixedly connected with limit protruding block 12, the side surface of rear storage cabin 2 is fixedly connected with limit recessed block 13, limit recessed block 13 is clamped with limit protruding block 12, gyro wheel shaft 61 penetrates through lower mounting lug 3, gyro wheel shaft 61 is rotatably connected with lower mounting lug 3, one end of gyro wheel shaft 61 penetrates through connecting rod body 11, lower mounting lug 3 is located between middle hinged lug 4 and connecting rod body 11, the inside of rear storage cabin 2 is equipped with cabin sliding groove 14, automatic retracting cabin plate is arranged in cabin sliding groove 14, for closing cabin, the front part of fuselage body 1 is equipped with front storage cabin 16, the inside of front storage cabin 16 is equipped with front landing gear 15, front landing gear 15 and rear landing gear assembly can be retracted into storage cabin, retractable landing gear design, structure conversion, so that unmanned vehicle will not be directly impacted by airflow in the process of flight, in complex weather conditions, such as when encountering crosswind, etc., protruding landing gear can vibrate or interfere with flight attitude due to uneven airflow, and retractable landing gear can reduce this interference, so that the flight attitude of unmanned vehicle is more stable, which is very critical for tasks requiring high-precision flight control, such as shooting stable pictures or precise mapping when aerial photography.

[0031] Working principle: when the unmanned aerial vehicle slides and rises to a certain height, only need to operate the hydraulic cylinder 8 contraction, by the hydraulic cylinder 8 pull link body 11 driven roller shaft 61 around the lower mounting ear 3 rotation, because the roller shaft 61 and middle hinge ear 4 fixed connection, in turn by the roller shaft 61 drive middle hinge ear 4 and upper mounting ear 5 around the roller shaft 61 rotation, to this end realize the effect of the rear landing gear assembly folding into the rear storage cabin 2, on the contrary, when the operation of the hydraulic cylinder 8 elongation, when the limit block 12 and rear storage cabin 2 on the limit recess 13 carding, can realize the rear landing gear assembly support after the limiting function.

[0032] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. Multi-purpose unmanned aerial vehicle landing gear comprising a fuselage body (1) and a rear landing gear assembly, characterized in that: The middle part of the fuselage body (1) is provided with a rear storage cabin (2), the rear landing gear assembly is arranged in the rear storage cabin (2), the rear storage cabin (2) is provided with a hinge groove at both ends of the inside, the hinge groove is rotatably connected with a hinge block (9), the hinge block (9) is fixedly connected with a hydraulic oil cylinder (8), one end of the hydraulic oil cylinder (8) away from the hinge block (9) is hingedly connected with a connecting rod shaft (10), the connecting rod shaft (10) is fixedly connected with a connecting rod body (11), one end of the connecting rod body (11) away from the connecting rod shaft (10) is fixedly connected with a roller shaft (61), and the roller shaft (61) is used to drive the folding rotation of the rear landing gear assembly.

2. The multipurpose drone landing gear of claim 1, wherein: The rear landing gear assembly comprises a middle hinge lug (4), an upper mounting lug (5), a folding shaft (62) and a rear landing wheel (7), the lower part of the upper mounting lug (5) is fixedly connected with the middle hinge lug (4), the upper part of the upper mounting lug (5) is fixedly connected with the folding shaft (62), and the rear landing wheel (7) is arranged in the upper mounting lug (5) and rotatably connected with the folding shaft (62).

3. The multipurpose drone landing gear of claim 2, wherein: One end of the middle hinge lug (4) away from the upper mounting lug (5) is fixedly connected with the roller shaft (61), and the side surface of the middle hinge lug (4) is fixedly connected with a limiting protruding block (12).

4. The multipurpose drone landing gear of claim 3, wherein: The side surface of the rear storage cabin (2) is fixedly connected with a limiting recessed block (13), and the limiting recessed block (13) is clamped with the limiting protruding block (12).

5. The multipurpose drone landing gear of claim 4, wherein: The roller shaft (61) penetrates through the lower mounting lug (3) and is rotatably connected with the lower mounting lug (3).

6. The multipurpose drone landing gear of claim 5, wherein: One end of the roller shaft (61) penetrates through the connecting rod body (11), and the lower mounting lug (3) is arranged between the middle hinge lug (4) and the connecting rod body (11).

7. The multipurpose drone landing gear of claim 6, wherein: The inside of the rear storage cabin (2) is provided with a cabin sliding groove (14), the cabin sliding groove (14) is provided with an automatic retracting cabin plate for closing the cabin, and the front part of the fuselage body (1) is provided with a front storage cabin (16), and the inside of the front storage cabin (16) is provided with a front landing gear (15).

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