aircraft

Abstract

The present invention is applicable to the field of aircraft technology and provides an aircraft. The aircraft includes a fuselage, a liquid container connected to the fuselage, a plurality of wing assemblies spaced circumferentially around the fuselage, and a nozzle mounted on the wing assembly and connected to the liquid container for spraying liquid medicine. The liquid container includes a container body, which includes an upper box and a lower box. The upper box is provided with a first cavity, and the lower box is provided with a second cavity connected to the first cavity. The first cavity and the second cavity are used to store liquid medicine. The liquid container is detachably connected to the fuselage. The upper box is provided with a support portion, which is used to support the fuselage. When the liquid container is installed on the fuselage, after the lower box is inserted into the fuselage, the upper box is supported on the fuselage. Due to the formation of the first cavity and the second cavity, the shaking of the liquid medicine stored in the first cavity and the second cavity during movement is reduced, thereby ensuring the stability and reliability of movement.

Description

[0001] This application is a divisional application of the invention patent application filed on April 6, 2017, with the earliest priority date being April 7, 2016, the invention name being “Liquid Container and Aircraft”, and the application number being 201710221785.9. Technical Field

[0002] The present invention belongs to the technical field of aircraft, and in particular relates to an aircraft. Background Art

[0003] Currently, due to advances in automation technology, aerial vehicles are widely used in textile protection operations, such as spraying pesticides on plants and managing agricultural practices. When using aerial vehicles for pesticide spraying, a liquid container is typically mounted on the aircraft's fuselage to hold the liquid. The liquid is carried in the container and, during flight, is sprayed onto the desired area, such as farmland or forestry, using a spraying device.

[0004] However, during the flight of the aircraft, the liquid medicine in the existing liquid container is prone to shaking, causing the aircraft to fly unsteadily. Summary of the Invention

[0005] The purpose of the present invention is to provide an aircraft, aiming to solve the technical problem in the prior art of how to reduce the shaking of liquid medicine in a liquid container during the movement of the liquid container.

[0006] The present invention aims to provide an aircraft comprising a fuselage, a liquid container connected to the fuselage, a plurality of wing assemblies spaced circumferentially around the fuselage, and a spray head mounted on the wing assemblies and connected to the liquid container for spraying liquid medicine.

[0007] The liquid container includes a container body, the container body includes an upper box body and a lower box body, the upper box body is provided with a first cavity, the lower box body is provided with a second cavity communicating with the first cavity, the first cavity and the second cavity are used to store liquid medicine;

[0008] The liquid container is detachably connected to the fuselage, and the upper box body is provided with a supporting portion, which is used to support the fuselage. When the liquid container is installed on the fuselage, after the lower box body is inserted into the fuselage, the upper box body is supported on the fuselage.

[0009] Furthermore, the cross-sectional area of ​​the lower box body when looking down at the fuselage is smaller than the cross-sectional area of ​​the upper box body.

[0010] Furthermore, the support portion is provided on the bottom wall of the upper box body, and is provided at a portion of the upper box body where the cross-sectional area is larger than the cross-sectional area of ​​the lower box body.

[0011] Furthermore, the support portion is provided on the bottom wall of the upper box body adjacent to the lower box body.

[0012] Furthermore, the support portion is a part of the upper box body, and the upper box body is supported on the fuselage through the support portion.

[0013] Furthermore, when the liquid container contains liquid medicine to be sprayed, the upper box body is supported on the body under the action of gravity of the liquid medicine to be sprayed.

[0014] Furthermore, the upper box body and the lower box body are in an up-and-down stacking structure, and roughly form a "T" shape or an inverted "L" shape.

[0015] Furthermore, the fuselage includes a frame, and the frame is a through-structure up and down to form a through space, and the lower box is inserted into the through space.

[0016] Furthermore, the fuselage includes a nose, the nose and the frame are arranged along the front-to-back direction, the nose is located in front of the forward direction of the aircraft, and the frame is fixedly connected to the nose.

[0017] Furthermore, the head has a supporting plate, and the frame includes two strip-shaped mounting plates arranged at the rear end of the supporting plate and symmetrically arranged with respect to the left and right directions, and a connecting plate connected to the rear ends of the two mounting plates. The connecting plate, the two mounting plates and the supporting plate enclose the through space.

[0018] Furthermore, the upper box body is provided with a buckling structure for being snap-connected with the fuselage.

[0019] Furthermore, the fuselage includes a head having a supporting flat plate, and the upper box is overlapped on the supporting flat plate and buckled on the supporting flat plate.

[0020] Furthermore, one of the upper box and the supporting plate is provided with a pair of fasteners and the other is provided with a pair of fastening grooves matched with the fasteners.

[0021] Furthermore, the liquid outlet of the liquid container is arranged on the bottom wall of the upper box body adjacent to the connection between the upper box body and the lower box body, or is arranged on the side wall of the lower box body adjacent to the connection between the upper box body and the lower box body.

[0022] Furthermore, the liquid container also includes a counterweight component sunk at the bottom of the lower box body and an infusion hose connecting the counterweight component and the liquid outlet.

[0023] Furthermore, it also includes at least one guide rod arranged on the fuselage and close to the side of the head, the guide rod is arranged along the insertion direction of the lower box body, and is stopped at the front surface of the lower box body when the lower box body is inserted into the through space.

[0024] Furthermore, the upper box body and the lower box body are integrally formed.

[0025] Furthermore, the lower box body extends downward from the bottom wall of the upper box body.

[0026] The technical effect of the present invention compared to the prior art is that the liquid container is provided with the upper box body and the lower box body arranged up and down, and respectively provided with the first cavity and the second cavity that are interconnected. Due to the formation of the first cavity and the second cavity, the shaking of the medicinal liquid stored in the first cavity and the second cavity during the movement is reduced to ensure the stability and reliability of the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural schematic diagram of a liquid container mounted on the body in one direction according to an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the fuselage structure of an aircraft provided by an embodiment of the present invention;

[0030] Figure 3 yes Figure 2 A partial enlarged view of middle III;

[0031] Figure 4 yes Figure 2 A partial enlarged view of IV;

[0032] Figure 5 yes Figure 2 Schematic diagram of the structure of the rolling component;

[0033] Figure 6 This is a schematic structural diagram of a liquid container mounted on the fuselage in another direction according to an embodiment of the present invention;

[0034] Figure 7 yes Figure 6 A partial enlarged view of Figure VII;

[0035] Figure 8 is a schematic structural diagram of a liquid container provided by an embodiment of the present invention;

[0036] Figure 9 yes Figure 8 A partial enlarged view of middle IX;

[0037] Figure 10 This is a structural diagram of a liquid container provided in an embodiment of the present invention, to illustrate the structural features inside its liquid storage cavity.

[0038] Description of reference numerals:

[0039]

[0040] DETAILED DESCRIPTION

[0041] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0044] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0046] Please refer to Figures 1 to 10 The liquid container 10 provided in an embodiment of the present invention includes a container body 12, which includes an upper box body 126 and a lower box body 124 extending downward from the bottom wall of the upper box body 126. The upper box body 126 is provided with a first cavity 1262, and the lower box body 124 is provided with a second cavity 1242 connected to the first cavity 1262. The first cavity 1262 and the second cavity 1242 are used to store liquid medicine. The liquid container is provided with the upper box body 126 and the lower box body 124 arranged in an upper and lower manner, and is provided with the first cavity 1262 and the second cavity 1242 that are connected to each other. Due to the formation of the first cavity 1262 and the second cavity 1242, the shaking of the liquid medicine stored in the first cavity 1262 and the second cavity 1242 during movement is reduced, thereby ensuring the stability and reliability of movement.

[0047] Please refer to Figures 1 to 10 The liquid container 10 provided in an embodiment of the present invention is applied to an aircraft, which has a fuselage 30. The liquid container 10 is detachably connected to the fuselage 30. The liquid container 10 includes a container body 12 having a liquid storage cavity 120, and is provided with a liquid filling port 121 and a liquid outlet 122 located on the container body 12 and connected to the liquid storage cavity 120. The liquid storage cavity 120 is used to hold liquid to be sprayed; the container body 12 includes a lower box body 124 inserted into the fuselage 30 and an upper box body 126 supported by the fuselage 30 and buckled onto the fuselage 30. The upper box body 126 and the lower box body 124 are integrally formed and together form the liquid storage cavity 120.

[0048] The liquid container 10 provided in the embodiment of the present invention is detachably connected to the body 30, so that the liquid container 10 can be quickly removed from the body 30 and is easy to use. Specifically, the container body 12 of the liquid container 10 has the lower box body 124 and the upper box body 126 made of an integral molding. The lower box body 124 and the upper box body 126 together form the liquid storage cavity 120 for holding the liquid to be sprayed, and have the liquid filling port 121 and the liquid outlet port 122 that are interconnected with the liquid storage cavity 120 to facilitate the filling of the liquid into the liquid storage cavity 120 and the discharge of the liquid from the liquid storage cavity 120. When installed on the fuselage 30, the lower box body 124 is inserted into the fuselage 30 to limit the freedom of lateral movement of the liquid container 10, and the upper box body 126 is buckled onto the fuselage 30 to limit the freedom of vertical movement of the liquid container 10, thereby firmly mounting the liquid container 10 on the fuselage 30. Since the upper box body 126 and the fuselage 30 are buckled with each other, the disassembly and assembly between the two is ensured to be convenient, which is conducive to the quick disassembly and replacement of the liquid container 10.

[0049] It should be noted that the liquid injection port 121 and the liquid outlet 122 are independently provided on the container body 12 ; or, the liquid injection port 121 and the liquid outlet 122 can be the same hole provided on the container body 12 .

[0050] Please refer to Figure 1 、 Figures 8 to 10 In this embodiment, the lower box 124 and the upper box 126 are both generally square-shaped, such as a rectangular parallelepiped. The upper box 126 and the lower box 124 are arranged in the vertical direction as shown in the figure. When the liquid storage chamber 120 is filled with the sprayable liquid, the lower box 124 is inserted into the fuselage 30, and the upper box 126 is supported by the gravity of the sprayable liquid and secured to the fuselage 30 by being fastened to the fuselage 30. This prevents the liquid container 10 from shaking during flight, which could lead to unstable flight.

[0051] In this embodiment, the aircraft can be used in the farming industry to spray pesticides or water on agricultural products. Of course, the aircraft can also be used to spray fire extinguishing liquid in forest fires.

[0052] When the liquid container 10 is installed on the fuselage 30, the lower box body 124 is inserted into the fuselage 30 to position the liquid container 10, and the liquid container 10 is accurately positioned at a predetermined position on the fuselage 30. The upper box body 126 is snapped onto the fuselage 30 to fix the liquid container 10, so that the liquid container 10 is installed on the fuselage 30, thereby making the installation and removal of the liquid container 10 quick and convenient, thereby improving the working efficiency.

[0053] When the liquid medicine needs to be replaced after the aircraft completes a single operation, the liquid container 10 can be quickly removed from the fuselage 30, and the liquid container 10 pre-filled with the liquid medicine can be quickly installed on the fuselage 30. This saves the extra time for filling the liquid medicine after the aircraft lands, and the installation and removal of the liquid container 10 are also convenient and quick, thereby improving the operating efficiency of the aircraft.

[0054] Please refer to Figure 1 、 Figures 8 to 10 Furthermore, the upper box 126 is provided with a snap-fit ​​structure 20 for snap-fitting with the body 30. The snap-fit ​​structure 20 snap-fits the upper box 126 to the body 30, thereby conveniently fixing the liquid container 10 to the body 30, making the installation and removal of the liquid container 10 on the body 30 convenient and quick.

[0055] Preferably, the buckling structure 20 can be a matching structure of a buckle 24 and a snap groove 22, or a matching structure of a buckle and a strap, so as to limit the freedom of movement of the liquid container 10 up and down along the body 30, but is not limited thereto.

[0056] Please refer to the following figure, Figures 8 to 10 Furthermore, the cross-sectional area of ​​the lower box 124 when viewed from above the fuselage 30 is smaller than the cross-sectional area of ​​the upper box 126. It is understood that the direction of viewing the fuselage 30 from above is from top to bottom in the figure, and the cross-sectional areas of the lower box 124 and the upper box 126 when viewed from above the fuselage 30 are planes defined by the front-to-back and left-to-right directions in the figure. The lower box 124 is located below the upper box 126, and its cross-sectional area is smaller than that of the upper box 126. After the lower box 124 is inserted into the fuselage 30, the upper box 126 is supported on the fuselage 30, facilitating the installation of the liquid container 10 and enabling pre-batch filling.

[0057] Compared to other liquid containers 10 of the same volume and height, the liquid container 10 in this embodiment has a smaller cross-sectional area of ​​the lower box 124, which reduces the amount of liquid moved per unit volume within the lower box 124. This reduces sloshing of the liquid medicine within the lower box 124 during flight of the aircraft, ensuring stable flight of the aircraft. For example, if the aircraft's flight attitude suddenly changes during flight, the liquid medicine within the liquid container 10 may experience a sudden shift in the aircraft's center of gravity, causing the liquid medicine within the liquid container 10 to slosh.

[0058] During aircraft flight operations, the liquid in the upper chamber of the liquid container 10 flows out of the lower chamber through the liquid outlet 122 under the influence of gravity. In other words, when the liquid in the liquid storage chamber 120 is reduced to the volume within the lower chamber 124, the aircraft's flight attitude changes significantly. Because the lower chamber 124 has a smaller cross-sectional area along the liquid storage chamber 120, the amount of liquid moved per unit volume is reduced. This reduces sloshing of the liquid in the lower chamber 124 when the aircraft's flight attitude changes, facilitating stable flight control.

[0059] In other embodiments, interconnected grids may be provided in the container body 12 to reduce the sloshing of the liquid medicine, thereby simplifying the production process of the liquid container 10 and reducing the production cost of the liquid container 10 .

[0060] Please refer to Figure 8 and Figure 10 Furthermore, the upper box 126 and the lower box 124 form a "T" shape or an inverted "L" shape. The upper box 126 and the lower box 124 are stacked up and down, and roughly form a "T" shape or an inverted "L" shape. On the one hand, the lower box 124 is inserted into the fuselage 30 and the upper box 126 is supported on the fuselage 30. On the other hand, the cross-sectional area of ​​the lower box 124 is smaller than that of the upper box 126, so as to reduce the sloshing of the liquid in the liquid storage chamber 120 during the operation of the aircraft and ensure the stability of the aircraft flight.

[0061] Please refer to Figure 10Furthermore, the bottom wall of the upper box body 126, the side walls of the lower box body 124, and a plane passing through one end of the bottom wall of the upper box body 126 away from the lower box body 124 and the bottom ends of the side walls of the lower box body 124 form a receiving space (not shown), and the liquid outlet 122 is located within the receiving space. It can be understood that when the liquid container 10 is placed on a bottom surface, the end of the bottom wall of the upper box body 126 away from the lower box body 124 and the bottom ends of the side walls of the lower box body 124 are respectively supported on the ground, while the liquid outlet 122 is located within the receiving space and does not directly contact the ground.

[0062] Please refer to Figures 1 to 10 Furthermore, the fuselage 30 includes a nose 32 having a support plate 34 and a frame 35 fixedly connected to the support plate 34 and enclosing a through space 36 with the support plate 34. The lower box 124 is inserted into the through space 36, and the upper box 126 overlaps and engages with the support plate 34. The upper box 126 overlaps and engages with the support plate 34, and the lower box 124 is inserted into the through space 36 to insert the liquid container 10 into the fuselage 30. In this way, when the aircraft lands on the ground, the support of the support plate 34 prevents the liquid outlet 122 provided at the bottom of the lower box 124 from directly contacting the ground, thereby protecting the liquid outlet 122.

[0063] Please refer to Figure 8 and Figure 10 Furthermore, the liquid outlet 122 is provided on the side of the upper case 126 connected to the lower case 124. The liquid container 10 further includes a counterweight 14 sunk at the bottom of the lower case 124 and a liquid infusion hose 15 connecting the counterweight 14 and the liquid outlet 122. The liquid outlet 122 and the lower case 124 are provided on the same side of the upper case 126. Since the cross-sectional area of ​​the lower case 124 is smaller than that of the upper case 126, the height of the lower case 124 can provide a certain degree of protection for the liquid outlet 122, thereby protecting the liquid outlet 122 during the process of lifting the liquid container 10 and preventing leakage caused by deformation of the liquid outlet 122.

[0064] In order to spray all the medicine liquid in the lower box 124, the infusion hose 15 is used to connect the liquid outlet 122 and the counterweight 14 at the bottom of the lower box 124. When the medicine liquid in the liquid storage cavity 120 gradually decreases, the infusion hose 15 transports the medicine liquid at the bottom of the lower box 124 to the liquid outlet 122. By setting the counterweight 14, one end of the infusion hose 15 is always kept at the bottom of the lower box 124 under the action of gravity.

[0065] In this embodiment, the counterweight 14 and the infusion hose 15 are made of corrosion-resistant materials. For example, the infusion hose 15 may be made of plastic, and the configuration part may be made of ceramic or alloy.

[0066] Please refer to Figures 8 to 10 Furthermore, the container body 12 also includes a handle 128 integrally formed with the upper case 126. The handle 128 and the lower case 124 are located on opposite sides of the upper case 126, and the pulling direction of the handle 128 coincides with the center of gravity of the liquid storage chamber 120. The provision of the handle 128 facilitates quick insertion and removal of the liquid container 10 into or from the body 30 by pulling the handle 128, facilitating assembly and disassembly. The integral molding of the handle 128 with the upper case 126 simplifies the processing of the liquid container 10 and ensures its strength. The handle 128 is provided at a middle position in the width direction of the upper surface of the upper case 126, so that the pulling direction of the handle 128 coincides with the center of gravity of the liquid storage chamber 120 formed by the lower case 124 and the upper case 126, thereby ensuring that the liquid container 10 can be inserted into or removed from the body 30 along the direction of gravity when the handle 128 is pulled. The width direction refers to the left-right direction in the figure.

[0067] Please refer to Figures 8 to 10 Furthermore, the liquid filling port 121 is provided on the same side of the upper case 126 as the handle 128 along its length, and the axial direction of the liquid outlet 122 coincides with the center of gravity of the container body 12. It is understood that the liquid outlet 122 is provided in the middle of the width direction of the lower surface of the upper case 126, so that the axial direction of the liquid outlet 122 coincides with the center of gravity of the container body 12. Preferably, the axial direction of the liquid outlet 122 coincides with the pulling direction of the handle 128.

[0068] Preferably, when the lower box body 124 and the upper box body 126 are symmetrical structures, the handle 128, the liquid outlet 122, the lower box body 124 and the upper box body 126 have the same symmetrical plane, and the symmetrical plane is located in the middle position of the width direction of the upper box body 126.

[0069] Please refer to Figure 8 Furthermore, a first liquid level observation strip 1240 for observing the water level in the liquid storage cavity 120 is provided on one side of the lower box 124 along its height direction, and / or a second liquid level observation strip 1260 for observing the water level in the liquid storage cavity 120 is provided on one side of the upper box 126 along its height direction. It should be noted that the height direction refers to the up-down direction in the figure. The liquid container 10, by providing the first liquid level observation strip 1240 on the lower box 124 and / or the second liquid level observation strip 1260 on the upper box 126, facilitates observation of the liquid level in the liquid storage cavity 120. This allows the user to determine whether liquid medicine needs to be refilled into the liquid storage cavity 120 when the aircraft stops operating. Furthermore, the user can determine the volume of liquid medicine when refilling the liquid storage cavity 120.

[0070] Preferably, a volume scale corresponding to the volume is marked near the first liquid level observation tape 1240 , and similarly, a volume scale corresponding to the volume is marked near the second liquid level observation tape 1260 , so that the remaining amount of the liquid in the liquid storage cavity 120 can be intuitively seen.

[0071] Please refer to Figure 8 and Figure 10 Furthermore, the liquid container 10 further includes a water stop valve assembly 16 screwed into the liquid filling port 121 and a water outlet valve 18 screwed onto the liquid outlet 122. By screwing the water stop valve assembly 16 onto the liquid filling port 121, the liquid container 10 can be filled with liquid medicine into the liquid storage cavity 120 through the liquid filling port 121 after the water stop valve assembly 16 is unscrewed. After the liquid medicine is fully filled, the water stop valve assembly 16 is tightened onto the liquid filling port 121. This prevents the liquid medicine from flowing out of the liquid filling port 121 and maintains the balance of air pressure inside and outside the liquid storage cavity 120, thereby ensuring that the liquid medicine in the liquid storage cavity 120 can be smoothly discharged from the liquid outlet 122.

[0072] In this embodiment, the water-stop valve assembly 16 includes a water-stop and air-permeable valve to prevent liquid leakage and a screw cap that cooperates with the liquid injection port 121. To ensure that the water-stop and air-permeable valve is fixed to the liquid injection port 121, the water-stop and air-permeable valve is first clamped onto the screw cap, and the screw cap is then broken by the screw thread and screwed onto the liquid injection port 121, thereby positioning the water-stop and air-permeable valve in the liquid injection port 121.

[0073] The outlet valve 18 is screwed onto the liquid outlet 122 and can automatically close the liquid outlet 122 when the liquid container 10 is not in use, thereby preventing leakage of the liquid in the liquid storage cavity 120. Preferably, the outlet valve 18 is an automatic water outlet and water stop valve.

[0074] Please refer to Figures 1 to 10 The aircraft provided in this embodiment of the present invention includes a fuselage 30, a liquid container 10 connected to the fuselage 30, a plurality of wing assemblies 40 circumferentially spaced apart around the fuselage 30, and a spray head 50 mounted on each wing assembly 40 and connected to the liquid container 10 for spraying liquid medicine. The liquid container 10 is the liquid container 10 described above, and the spray head 50 is connected to the liquid outlet 122. The liquid container 10 in this embodiment has the same structure and functions as the liquid container 10 in the aforementioned embodiments, and a detailed description thereof will not be repeated here.

[0075] In this embodiment, the liquid container 10 is detachably connected to the body 30 to facilitate quick disassembly and assembly, thereby greatly improving disassembly and assembly efficiency.

[0076] The aircraft is connected to the liquid outlet 122 of the liquid container 10 through the nozzle 50 to spray the liquid in the liquid storage cavity 120 along the liquid outlet 122 and the nozzle 50 to the required spraying area to meet the liquid spraying requirements.

[0077] The aircraft is provided with the wing assembly 40 to provide lifting power. The power of the nozzle 50 can be provided by the wing assembly 40 or can be driven by a separate drive motor.

[0078] Please refer to Figure 1 、 Figure 2 and Figure 6Furthermore, the fuselage 30 includes a nose 32 having a support plate 34, and a frame 35 fixedly connected to the support plate 34 and enclosing a through-space 36 with the support plate 34. The lower case 124 is inserted into the through-space 36, and the upper case 126 overlaps and engages the support plate 34. It is understood that the nose 32 and frame 35 are arranged in the front-to-back direction in the figure, with the nose 32 located forward in the direction of travel of the aircraft, and the frame 35 located at the rear end of the support plate 34. The frame 35 is fixedly connected to the nose 32 and also remains fixed to the support plate 34. The frame 35 is a vertically continuous structure, forming the through-space 36. The main structure of the frame 35 includes two strip-shaped mounting plates symmetrically arranged at the rear end of the support plate 34 with respect to the left-right direction, and a connecting plate connecting the rear ends of the two mounting plates. The connecting plate, the two mounting plates, and the support plate 34 together enclose the through-space 36. The width of the through space 36 is slightly larger than the width of the lower box body 124 , so that the lower surface of the upper box body 126 can overlap the supporting plate 34 .

[0079] In this embodiment, the main circuit and main control components of the aircraft may be disposed on the nose 32 .

[0080] In this embodiment, the aircraft further includes a crossbeam erected above the through space 36 to reduce the through space 36 to a size in which the lower box 124 can be inserted, thereby preventing the liquid container 10 from shaking in the through space 36 .

[0081] Please refer to 1 to Figure 8 Furthermore, one of the upper box 126 and the support plate 34 is provided with a pair of fasteners 24, and the other is provided with a pair of engaging grooves 22 that cooperate with the fasteners 24. The aircraft mounts the liquid container 10 on the fuselage 30 via the engaging grooves 22 and the fasteners 24. In other words, the liquid container 10 is provided with the fasteners 24 and the fuselage 30 is provided with the engaging grooves 22, or the liquid container 10 is provided with the engaging grooves 22 and the fuselage 30 is provided with the fasteners 24.

[0082] When installing the liquid container 10 on the body 30, the liquid container 10 can be fixed on the body 30 by snapping the fastener 24 into the snap groove 22, and the liquid container 10 can be accurately installed and positioned at a predetermined position on the body 30, so that the installation and removal of the liquid container 10 are convenient and quick, thereby improving the working efficiency.

[0083] When the liquid medicine needs to be replaced after the aircraft completes a single operation, the liquid container 10 can be quickly removed from the fuselage 30, and the liquid container 10 pre-filled with the liquid medicine can be quickly installed on the fuselage 30. This saves the extra time for filling the liquid medicine after the aircraft lands, and the installation and removal of the liquid container 10 are also convenient and quick, thereby improving the operating efficiency of the aircraft.

[0084] Please refer to Figures 1 to 8 Furthermore, each of the engaging slots 22 has a recessed portion 220 at its bottom, and each of the latching members 24 has a protruding strip 240 that protrudes toward the interior of the engaging slot 22 and is embedded in the recessed portion 220. The aircraft utilizes the latching members 24 to be received in the engaging slots 22, thereby positioning the liquid container 10 on the support plate 34. Furthermore, the recessed portion 220 is recessed in the bottom of the engaging slot 22, and the protruding strip 240 is protruding from the latching member to engage with the recessed portion 220, thereby securely engaging the latching member 24 in the engaging slot 22 and fixing the liquid container 10 on the support plate 34.

[0085] Please refer to Figure 1 、 Figure 2 and Figure 8 Furthermore, the two engaging grooves 22 are symmetrically disposed on opposite sides of the upper case 126, and the two engaging members 24 are fixedly connected to the support plate 34 and located on opposite sides of the upper case 126. The engaging grooves 22 are disposed on opposite sides of the upper case 126 to symmetrically position the upper case 126, ensuring that the positioning force and the limiting position remain balanced and uniform. Similarly, the engaging members 24 are located on both sides of the upper case 126 and engage with the engaging grooves 22.

[0086] Please refer to Figures 1 to 5 Furthermore, the fastener 24 includes a support base 242 fixedly connected to the support plate 34, and a support frame 244 that protrudes along the support base 242 toward a side away from the support plate 34 and is received in the fastening groove 22. The surface of the support frame 244 facing the upper case 126 is parallel to the outer surface of the upper case 126, and the protruding strip 240 protrudes from the surface of the support frame 244. Preferably, the support base 242 can be fastened to the support plate 34 by bolts or welded to the support plate 34, thereby securing the support base 242 to the support plate 34. The support frame 244 protrudes along the support base 242 and is received in the fastening groove 22. The protruding strip 240 protrudes from the surface of the support frame 244 to engage with the lower recess 220, thereby securely fastening the fastener in the fastening groove 22.

[0087] Please refer to Figure 8 and Figure 9 Furthermore, the engaging groove 22 has an inlet 222 for introducing the support frame 244, and an inlet surface 224 is formed between the inlet 222 and the lower recess 220 for introducing the protruding strip 240 into the lower recess 220. The inlet 222 is close to the lower surface of the upper case 126, so that when the support frame 244 is engaged with the engaging groove 22, the end of the support frame 244 is inserted into the engaging groove 22 along the inlet 222, and the protruding strip 240 is engaged with the lower recess 220 along the inlet surface 224, thereby ensuring smooth engagement.

[0088] In this embodiment, the protruding strip 240 is strip-shaped and is arranged along the front-to-back direction of the fuselage 30 , or in other words, the protruding strip 240 is arranged along a direction perpendicular to the insertion direction of the lower box body 124 .

[0089] Please refer to 8 and Figure 9 Furthermore, the introduction surface 224 is an outwardly protruding arc surface. Protruding outward refers to a direction away from the center of the upper box body 126. The protruding strip 240 can be smoothly snapped into the lower recess 220 along the introduction surface 224, making the positioning and installation of the liquid container 10 faster and more accurate.

[0090] Please refer to Figures 1 to 7 Furthermore, the fuselage 30 further includes a pair of rolling assemblies 38 that roll with both sides of the lower box 124 when the lower box 124 is inserted into the through space 36. Each rolling assembly 38 is mounted on the inner side of the frame 35 and accommodated in the through space 36. By providing the rolling assemblies 38 with the rolling engagement with the lower box 124, the aircraft avoids friction between the lower box 124 and the frame 35 that could damage the lower box 124, and prevents the liquid container 10 from shaking during operation.

[0091] Please refer to Figures 1 to 5 Furthermore, each rolling assembly 38 includes a fixed bracket 380 fixed to the inside of the frame 35 and at least one roller 382 rotatably connected to the fixed bracket 380 and in rolling contact with the surface of the lower box 124. The axial direction of the roller 382 is perpendicular to the insertion direction of the lower box 124. The fixed bracket 380 is screwed and fixed to the inside of the frame 35. The roller 382 is rotatably connected to the fixed bracket 380 and in rolling contact with the surface of the lower box 124 to prevent friction between the lower box 124 and the frame 35.

[0092] Preferably, the entire fixed bracket 380 can be located entirely on the inner wall of the frame 35, in which case the roller 382 is located inside the frame 35; or the upper part of the fixed bracket 380 extends upward and is higher than the frame 35, in which case the roller 382 can be installed at a position higher than the frame 35, thereby achieving rolling cooperation between the roller 382 and the lower box body 124 to avoid friction between the lower box body 124 and the frame 35 and damage to the lower box body 124.

[0093] Please refer to Figure 5 Furthermore, each rolling assembly 38 includes two or more rollers 382, ​​and each roller 382 is arranged parallel and spaced apart along the insertion direction of the lower case 124. It is understood that the rollers 382 are arranged parallel and spaced apart along the vertical direction in the figure. The distance between the rollers 382 on the two rolling assemblies 38 is slightly larger than the left-right dimension of the lower case 124, thereby facilitating the installation of the lower case 124 between the two sets of rolling assemblies 38.

[0094] Please refer to Figure 6 and Figure 7 Furthermore, the aircraft also includes at least one guide rod 60 provided on the fuselage 30 and close to the side of the nose 32, and the guide rod 60 is provided along the insertion direction of the lower box 124, and is stopped at the front surface of the lower box 124 when the lower box 124 is inserted into the through space 36. Preferably, the guide rod 60 is extended in the up and down directions along the inner side of the fuselage 30. The number of the guide rods 60 can be one or more. For example, two guide rods 60 are provided on the fuselage 30, and the two guide rods 60 are spaced apart along the left and right sides of the lower box 124, and are stopped at the front surface of the lower box 124 when the lower box 124 is inserted into the through space 36 from top to bottom. When the liquid container 10 filled with liquid medicine is installed on the body 30, since the lower box 124 is heavy, the lower box 124 is easy to tilt forward when the handle 128 is held. The stopping effect of the guide rod 60 can prevent the lower box 124 from tilting forward when the liquid container 10 is installed, thereby facilitating the fastener 24 to quickly and accurately cooperate with the snap-fit ​​groove 22, and then quickly positioning and installing the liquid container 10 on the body 30.

[0095] Please refer to Figure 1 、 Figure 2 and Figure 6Furthermore, each wing assembly 40 includes an arm 42 mounted on the fuselage 30, a rotor 44 mounted at the end of the arm 42, and a drive device 45. The drive device 45 drives the rotor 44 to rotate, and the nozzle 50 is arranged directly below the drive device 45. It can be understood that the end of each arm 42 is provided with a rotor 44 and a drive device 45 for driving the rotor 44 to rotate, such as a motor. The rotor 44 can be connected to the motor shaft of the motor to rotate the rotor 44 and thus drive the aircraft to fly. Preferably, the number of wing assemblies 40 is four, that is, the aircraft is a quadrotor. Of course, the number of wing assemblies 40 can also be other numbers, such as a hexacopter.

[0096] In this embodiment, the spray heads 50 can be attached to the arms 42 via a threaded connection structure, or alternatively, the spray heads 50 can be attached to the arms 42 via a snap-fit ​​structure. In one embodiment of the present invention, the number of spray heads 50 is equal to the number of arms 42, and the plurality of spray heads 50 are detachably attached to the lower portions of the distal ends of the plurality of arms 42. For example, the spray heads 50 can be located directly below the drive device 45. This dispersed arrangement of the plurality of spray heads 50 meets the requirements for spraying the liquid medicine, and provides a more uniform spray.

[0097] Please refer to Figure 1 、 Figure 2 and Figure 6 Furthermore, the aircraft also includes a pair of support legs 70 fixedly mounted on the fuselage 30 and used to suspend the fuselage 30 above the ground. The support legs 70 prevent the fuselage 30 from directly contacting the ground when the aircraft lands and parks, thus preventing damage to the fuselage 30. The support legs 70 provide support and protection.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An aircraft, characterized in that: The device comprises a fuselage, a liquid container connected to the fuselage, a plurality of wing assemblies spaced circumferentially around the fuselage, and a nozzle mounted on the wing assemblies and connected to the liquid container for spraying liquid medicine; The liquid container includes a container body, the container body includes an upper box body and a lower box body, the upper box body is provided with a first cavity, the lower box body is provided with a second cavity communicating with the first cavity, the first cavity and the second cavity are used to store liquid medicine; The liquid container is detachably connected to the fuselage, and the upper box body is provided with a support portion, which is used to support the fuselage. The cross-sectional area of ​​the lower box body when looking down at the fuselage is smaller than the cross-sectional area of ​​the upper box body. When the liquid container is installed on the fuselage, after the lower box body is inserted into the fuselage, the upper box body is supported on the fuselage.

2. The aircraft according to claim 1, wherein: The support portion is provided on the bottom wall of the upper box body, and is provided at a portion of the upper box body having a cross-sectional area larger than that of the lower box body.

3. The aircraft according to claim 1, wherein: The supporting portion is arranged on the bottom wall of the upper box body adjacent to the lower box body.

4. The aircraft according to claim 1, wherein: The support portion is a part of the upper box body, and the upper box body is supported on the fuselage through the support portion.

5. The aircraft according to claim 1, wherein: When the liquid container contains the liquid to be sprayed, the upper box body is supported against the main body by the gravity of the liquid to be sprayed.

6. The aircraft according to claim 1, wherein: The upper box body and the lower box body are in an up-and-down stacking structure and roughly form a "T" shape or an inverted "L" shape.

7. The aircraft according to claim 1, wherein: The fuselage includes a frame, and the frame is a through structure up and down to form a through space, and the lower box is inserted in the through space.

8. The aircraft according to claim 7, characterized in that The fuselage includes a nose, and the nose and the frame are arranged along the front-back direction. The nose is located in front of the forward direction of the aircraft, and the frame is fixedly connected to the nose.

9. The aircraft according to claim 8, characterized in that The machine head has a supporting plate, and the frame includes two strip-shaped mounting plates arranged at the rear end of the supporting plate and symmetrically arranged with respect to the left and right directions, and a connecting plate connected to the rear ends of the two mounting plates. The connecting plate, the two mounting plates and the supporting plate enclose the through space.

10. The aircraft according to claim 1, wherein: The upper box body is provided with a buckling structure for being snap-connected with the fuselage.

11. The aircraft according to claim 10, wherein: The fuselage comprises a head with a supporting flat plate, and the upper box is overlapped on the supporting flat plate and buckled on the supporting flat plate.

12. The aircraft according to claim 11, wherein: One of the upper box and the supporting plate is provided with a pair of fasteners, and the other is provided with a pair of fastening grooves matched with the fasteners.

13. The aircraft according to claim 1, wherein: The liquid outlet of the liquid container is arranged on the bottom wall of the upper box body adjacent to the connection between the upper box body and the lower box body, or is arranged on the side wall of the lower box body adjacent to the connection between the upper box body and the lower box body.

14. The aircraft according to claim 13, wherein: The liquid container further includes a counterweight component sunk at the bottom of the lower box body and a liquid infusion hose connecting the counterweight component and the liquid outlet.

15. The aircraft according to claim 8, wherein: It also includes at least one guide rod arranged on the fuselage and close to the side of the head. The guide rod is arranged along the insertion direction of the lower box body and stops at the front surface of the lower box body when the lower box body is inserted into the through space.

16. The aircraft according to claim 1, wherein: The upper box body and the lower box body are integrally formed.

17. The aircraft according to claim 1, wherein: The lower box body extends downward from the bottom wall of the upper box body.

Images