A logistics aircraft

Abstract

The utility model discloses a logistics aircraft, including unmanned aerial vehicle main part, the front side installation of unmanned aerial vehicle main part is provided with the installation support, the front side fixed setting of installation support has the monitoring frame, the front and back sides of unmanned aerial vehicle main part all are fixedly set up and have the rotor support, the rotor support sets up above monitoring frame, the left and right sides of unmanned aerial vehicle main part are close to the below installation and are provided with the take -off support, the fixed setting of take -off support between has the cargo compartment box, through strain gauge sensor to the goods frame gravity center position of complete goods goods is measured, detects the gravity center position deviation of goods frame, according to the gravity center position change, under the third motor and the action of screw rod, make the mobile seat of below drive support seat move on screw rod, adjust the electrically -operated frame position of above, thereby adjust goods frame position, under the third motor and the action of screw rod, make the mobile seat of above drive support seat move on screw rod adjustment, thereby adjust goods frame position.

Description

Technical Field

[0001] This utility model relates to the field of aircraft technology, specifically to a logistics aircraft. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment or their own program control devices. Currently, UAVs are widely used in fields such as aerial photography, agriculture, plant protection, mini selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying, news reporting, power line inspection, disaster relief, and film and television shooting. However, when UAVs are used for logistics and express delivery, after the express goods are stacked in the UAV's cargo compartment, the center of gravity can easily shift due to the varying weights of the express goods when the UAV takes off to deliver the goods, affecting the flight stability of the UAV. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] In view of the problems mentioned above and / or existing logistics aircraft, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a logistics aircraft that uses strain gauge sensors to measure the center of gravity position of the cargo frame after it has been loaded with goods. After detecting a shift in the center of gravity position of the cargo frame, the moving seat moves the support seat on the lead screw under the action of the third motor and the lead screw below, and at the same time, the support seat moves and adjusts under the action of the third motor and the lead screw above, thereby adjusting the position of the cargo frame, readjusting the center of gravity of the cargo frame, and improving the stability of the drone body during flight.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A logistics aircraft includes a drone body, a mounting bracket installed on the front side of the drone body, a monitoring frame fixedly mounted on the front side of the mounting bracket, rotor brackets fixedly mounted on both the front and rear sides of the drone body, the rotor brackets being positioned above the monitoring frame, landing brackets installed on the left and right sides of the drone body near the bottom, a cargo hold fixedly mounted between the landing brackets, and doors hinged to the front and rear sides of the cargo hold. The cargo hold includes a strain gauge sensor installed at the bottom of the cargo hold. A support column is connected to the upper end of the strain gauge sensor. An electric adjustment frame is installed above the support column. There are two sets of electric adjustment frames, which are vertically arranged between the upper and lower sets. The lower electric adjustment frame is located at the upper end of the support column.

[0007] In a preferred embodiment of the logistics aircraft described in this utility model, connecting brackets are fixedly provided on both the left and right sides of the rotor support, and a drive shaft is provided through the connecting bracket, with the inner end of the drive shaft being rotatably connected to the rotor support.

[0008] In a preferred embodiment of the logistics aircraft described in this utility model, the outer end of the transmission shaft is fixedly connected to the rotor body, and the inner end of the transmission shaft is connected to the output shaft of the first motor, which is located inside the rotor support.

[0009] In a preferred embodiment of the logistics aircraft described in this utility model, the monitoring frame includes a rotating shaft rotatably connected to the inner wall of the monitoring frame, a camera is fixedly connected to the inner end of the rotating shaft, and the rotating shaft on one side passes through the monitoring frame and is connected to the output shaft of the second motor.

[0010] In a preferred embodiment of the logistics aircraft described in this utility model, the cargo hold includes an opening slot on the side of the electric adjustment frame, and a lead screw is rotatably connected to the inner wall of the electric adjustment frame, with one end of the lead screw connected to the output shaft of a third motor.

[0011] In a preferred embodiment of the logistics aircraft described in this utility model, a movable seat is provided through the lead screw, a support guide rod is fixedly provided on the inner wall of the electric adjustment frame, the support guide rod is located on the outside of the lead screw, and the support guide rod passes through the movable seat.

[0012] In a preferred embodiment of the logistics aircraft described in this utility model, the two sides of the movable seat perpendicular to the lead screw direction are fixedly connected to the support seat, the support seat passes through the opening slot, the upper end of the lower support seat is fixedly connected to the upper electric adjustment frame, and a cargo frame is fixedly connected to the upper end of the upper support seat.

[0013] In a preferred embodiment of the logistics aircraft described in this utility model, the upper end of the cargo frame is provided with a slot near the front and rear sides, and the cargo frame is fitted with a baffle through the slot.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By measuring the center of gravity position of the cargo frame after the goods are stacked using a strain gauge sensor, and detecting the shift in the center of gravity position of the cargo frame, the lower moving seat moves along the lead screw under the action of the lower third motor and lead screw, thereby adjusting the position of the upper electric adjustment frame and thus adjusting the position of the cargo frame. At the same time, under the action of the upper third motor and lead screw, the upper moving seat moves along the lead screw to adjust the position of the cargo frame. By adjusting the position of the cargo frame laterally and longitudinally, the center of gravity of the cargo frame is readjusted, improving the stability of the UAV during flight. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the monitoring frame, rotating shaft, camera, and second motor structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the cargo hold box of this utility model; Figure 4 This is a schematic cross-sectional view of the electric adjustment frame of this utility model.

[0016] In the diagram: 1. UAV body; 2. Mounting bracket; 3. Monitoring frame; 301. Rotary shaft; 302. Camera; 303. Second motor; 4. Rotor bracket; 5. Connecting bracket; 6. Drive shaft; 7. Rotor body; 8. First motor; 9. Landing bracket; 10. Cargo hold; 1001. Strain gauge sensor; 1002. Support column; 1003. Electric adjustment frame; 1004. Opening slot; 1005. Lead screw; 1006. Third motor; 1007. Moving seat; 1008. Support guide rod; 1009. Support base; 1010. Cargo frame; 1011. Slot; 1012. Baffle; 11. Door. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] This invention provides a logistics drone that uses strain gauge sensors to measure the center of gravity position of a cargo frame after it has been loaded with goods. Upon detecting a shift in the center of gravity, a third motor and a lead screw at the bottom move a movable seat along the lead screw, while simultaneously, the third motor and lead screw at the top move the support seat to adjust its position. This repositioning of the cargo frame and readjustment of its center of gravity improves the stability of the drone during flight. Figures 1-4 The diagram shown is an overall structural schematic of one embodiment of the logistics aircraft of this utility model. Please refer to [link / reference]. Figures 1-4 This embodiment of a logistics aircraft includes a drone body 1, a mounting bracket 2 installed on the front side of the drone body 1, a monitoring frame 3 fixedly installed on the front side of the mounting bracket 2, rotor brackets 4 fixedly installed on both the front and rear sides of the drone body 1, the rotor brackets 4 being positioned above the monitoring frame 3, landing brackets 9 installed on the left and right sides of the drone body 1 near the bottom, a cargo hold 10 fixedly installed between the landing brackets 9, and a door 11 hinged to both the front and rear sides of the cargo hold 10. The cargo hold 10 includes a strain gauge sensor 1001 installed at the bottom inside the cargo hold 10. A support column 1002 is connected to the upper end of the strain gauge sensor 1001. An electric adjustment frame 1003 is installed above the support column 1002. There are two sets of electric adjustment frames 1003, which are vertically arranged between the upper and lower sets. The lower electric adjustment frame 1003 is located at the upper end of the support column 1002.

[0021] The center of gravity position of the cargo frame 1010 after the goods have been stacked is measured by strain gauge sensor 1001. The strain gauge sensor 1001 can measure the center of gravity position. Its core principle is to detect the strain signal generated by the deformation of the object under force, and combine the deformation of the elastic body with the change of resistance of the strain gauge to convert the gravity signal into an electrical signal, thereby monitoring the change of the center of gravity position of the object in real time. The change of resistance of the strain gauge is caused by the deformation of the elastic body. This change is directly related to the direction and magnitude of the force. When the center of gravity position of the object moves, the difference in deformation of different parts of the elastic body will cause the phase difference of the output electrical signal, thus reflecting the change of the center of gravity position.

[0022] A connecting bracket 5 is fixedly installed on both the left and right sides of the rotor support 4. A drive shaft 6 is installed through the connecting bracket 5. The inner end of the drive shaft 6 is rotatably connected to the rotor support 4. The outer end of the drive shaft 6 is fixedly connected to the rotor body 7. The inner end of the drive shaft 6 is connected to the output shaft of the first motor 8. The first motor 8 is installed inside the rotor support 4.

[0023] When the rotor body 7 is vertical in the vertical direction, it is used for the take-off and landing of the UAV body 1. The different rotation speeds of the left and right rotor bodies 7 or the front and rear rotor bodies 7 result in different lift. The UAV body 1 tilts to one side. In conventional multi-rotor UAVs, when flying level, the rotor disk rotation plane is perpendicular to the direction of travel, forming a huge frontal area and generating great drag. The first motor 8 and the drive shaft 6 drive the rotor body 7 to rotate and adjust, so that when the rotor body 7 is facing forward / backward, the disk is parallel to the airflow direction, the frontal area is greatly reduced, the aerodynamic drag is significantly reduced, and the flight effect is improved.

[0024] The monitoring frame 3 includes a rotating shaft 301 rotatably connected to the inner wall of the monitoring frame 3. A camera 302 is fixedly connected to the inner end of the rotating shaft 301. The rotating shaft 301 on one side passes through the monitoring frame 3 and is connected to the output shaft of the second motor 303.

[0025] The camera 302 monitors the surrounding area of ​​the flight, and the camera 302 is rotated by the second motor 303 and the rotating shaft 301 to adjust the monitoring range.

[0026] The cargo hold 10 includes an opening slot 1004 on the side of the electric adjustment frame 1003. A lead screw 1005 is rotatably connected to the inner wall of the electric adjustment frame 1003. One end of the lead screw 1005 is connected to the output shaft of the third motor 1006. A movable seat 1007 is provided through the lead screw 1005. A support guide rod 1008 is fixedly provided on the inner wall of the electric adjustment frame 1003. The support guide rod 1008 is located on the outside of the lead screw 1005 and passes through the movable seat 1007.

[0027] The third motor 1006 and the lead screw 1005 cause the movable seat 1007 to move and adjust on the lead screw 1005. The lower movable seat 1007 drives the support seat 1009 to move on the lead screw 1005, adjusting the position of the upper electric adjustment frame 1003, thereby adjusting the position of the cargo frame 1010. At the same time, the upper movable seat 1007 drives the support seat 1009 to move and adjust on the lead screw 1005, thereby adjusting the position of the cargo frame 1010. By adjusting the position of the cargo frame 1010 laterally and longitudinally, the center of gravity of the cargo frame 1010 is readjusted, improving the stability of the UAV body 1 during flight.

[0028] The movable seat 1007 is fixedly connected to the two sides of the vertical lead screw 1005 and the support seat 1009. The support seat 1009 passes through the opening slot 1004. The upper end of the lower support seat 1009 is fixedly connected to the upper electric adjustment frame 1003. The upper end of the upper support seat 1009 is fixedly connected to the cargo frame 1010. The upper end of the cargo frame 1010 is provided with a slot 1011 near the front and rear sides. The cargo frame 1010 is fitted with a baffle 1012 through the slot 1011.

[0029] The baffle 1012 is engaged with the cargo frame 1010 via the slot 1011, and works with the cargo frame 1010 to limit and block the stacked cargo, preventing the cargo from sliding and falling during flight.

[0030] Combination Figures 1-4 The specific usage process of a logistics aircraft according to this embodiment is as follows: A baffle 1012 is engaged with a cargo frame 1010 via a slot 1011, acting as a limiting barrier for the stacked cargo. A strain gauge sensor 1001 measures the center of gravity position of the stacked cargo frame 1010. The strain gauge sensor 1001 measures the center of gravity position. A third motor 1006 and a lead screw 1005 cause a movable seat 1007 to move and adjust on the lead screw 1005. The lower movable seat 1007 drives the support seat 1009 to move on the lead screw 1005, thus adjusting the upper electric adjustment frame 1003. The position is adjusted to change the position of the cargo frame 1010. At the same time, the upper movable seat 1007 drives the support seat 1009 to move and adjust on the lead screw 1005, thereby adjusting the position of the cargo frame 1010. By adjusting the position of the cargo frame 1010 horizontally and vertically, the center of gravity of the cargo frame 1010 is readjusted, improving the stability of the UAV body 1 during flight. The camera 302 monitors the surrounding area during flight. Under the action of the second motor 303 and the rotating shaft 301, the camera 302 is rotated to adjust the monitoring range. The control is performed by the central processing unit set inside the UAV body 1. The central processing unit is model uAV600C.

[0031] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A logistics aircraft, comprising a drone body (1), characterized in that: A mounting bracket (2) is installed on the front side of the main body (1) of the drone. A monitoring frame (3) is fixedly installed on the front side of the mounting bracket (2). Rotor brackets (4) are fixedly installed on both the front and rear sides of the main body (1). The rotor brackets (4) are located above the monitoring frame (3). Landing brackets (9) are installed on the left and right sides of the main body (1) near the bottom. A cargo box (10) is fixedly installed between the landing brackets (9). The front and rear sides of the cargo box (10) are connected by hinges with doors (11). The cargo hold (10) includes a strain sensor (1001) installed at the bottom of the cargo hold (10). A support column (1002) is connected to the upper end of the strain sensor (1001). An electric adjustment frame (1003) is provided above the support column (1002). There are two sets of electric adjustment frames (1003), and the upper and lower sets of electric adjustment frames (1003) are vertically arranged between each other. The lower electric adjustment frame (1003) is located at the upper end of the support column (1002).

2. The logistics aircraft according to claim 1, characterized in that: A connecting bracket (5) is fixedly installed on both the left and right sides of the rotor support (4). A drive shaft (6) is installed through the connecting bracket (5), and the inner end of the drive shaft (6) is rotatably connected to the rotor support (4).

3. A logistics aircraft according to claim 2, characterized in that: The outer end of the drive shaft (6) is fixedly connected to the rotor body (7), and the inner end of the drive shaft (6) is connected to the output shaft of the first motor (8). The first motor (8) is located inside the rotor support (4).

4. A logistics aircraft according to claim 1, characterized in that: The monitoring frame (3) includes a rotating shaft (301) rotatably connected to the inner wall of the monitoring frame (3). A camera (302) is fixedly connected to the inner end of the rotating shaft (301). The rotating shaft (301) on one side passes through the monitoring frame (3) and is connected to the output shaft of the second motor (303).

5. A logistics aircraft according to claim 1, characterized in that: The cargo box (10) includes an opening slot (1004) on the side of the electric adjustment frame (1003), and a lead screw (1005) is rotatably connected to the inner wall of the electric adjustment frame (1003). One end of the lead screw (1005) is connected to the output shaft of the third motor (1006).

6. A logistics aircraft according to claim 5, characterized in that: A movable seat (1007) is provided through the lead screw (1005), and a support guide rod (1008) is fixedly provided on the inner wall of the electric adjustment frame (1003). The support guide rod (1008) is located on the outside of the lead screw (1005) and passes through the movable seat (1007).

7. A logistics aircraft according to claim 6, characterized in that: The movable seat (1007) is fixedly connected to the two sides of the vertical lead screw (1005) and the support seat (1009). The support seat (1009) passes through the opening slot (1004). The upper end of the lower support seat (1009) is fixedly connected to the upper electric adjustment frame (1003). The upper end of the upper support seat (1009) is fixedly connected to the cargo frame (1010).

8. A logistics aircraft according to claim 7, characterized in that: The cargo frame (1010) has a slot (1011) on its upper end near the front and rear sides, and a baffle (1012) is engaged with the cargo frame (1010) through the slot (1011).

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