A payload platform for low altitude aircraft and methods of use thereof

Abstract

The application belongs to the field of aircraft transportation, and particularly relates to a load platform for low-altitude aircraft and a use method thereof. The load platform comprises a platform main body, a guide plate, a base and a control device. Unit holes for mounting counterweights are formed in the platform main body. The guide plate is provided with a plurality of display units. A weight sensor is arranged in the base and used for detecting weight data of the platform main body. The control device determines offset coordinates of the overall center of gravity of the platform main body relative to a coordinate origin O of the base according to the received weight data detected by the weight sensor, and controls the display units to display according to the determined offset coordinates, so as to guide the staff to load goods and / or counterweights. The load platform can simply and conveniently adjust the overall center of gravity, and improve the stable flight and hovering capability of the aircraft during transportation.

Description

Technical Field

[0001] This invention belongs to the field of aircraft transportation, specifically relating to a cargo platform for low-altitude aircraft and its usage method. Background Technology

[0002] Low-altitude aircraft (LAA) refers to all types of aircraft that fly in low-altitude airspace, rely on aerodynamic principles, integrate advanced technologies, perform diverse missions, create economic or social value, and meet civil aviation safety standards or airworthiness requirements.

[0003] With the rapid development of low-altitude aircraft technology, low-altitude aircraft have been widely used in logistics transportation, emergency rescue, scientific research experiments, and military missions. In these applications, stable payload transportation has become a crucial aspect of expanding the functionality of low-altitude aircraft.

[0004] In existing technologies, low-altitude aircraft typically utilize transport platforms to carry multiple payloads. While this method is convenient for loading, factors such as payload size, weight, placement, and loading sequence can cause the payload's center of gravity to shift, potentially affecting the aircraft's stable flight and hovering capabilities during transport. Current technologies often employ drive mechanisms and counterweights to adjust the transport platform's center of gravity. These mechanisms are connected to the counterweights, allowing the drive mechanism to move the counterweights relative to the transport platform, thus adjusting the platform's center of gravity. However, this center of gravity adjustment scheme requires complex drive mechanisms and carries heavy counterweights, significantly reducing the low-altitude aircraft's payload capacity. Furthermore, existing transport platforms often cannot maintain the payload's attitude during transport, leading to payload swaying or shifting on the platform, further impacting the aircraft's stable flight and hovering capabilities. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a cargo platform for low-altitude aircraft and a method for using the same. This cargo platform can easily and conveniently adjust the overall center of gravity, thereby improving the aircraft's stable flight and hovering capabilities during transportation.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] A cargo platform for a low-altitude aircraft, the cargo platform comprising:

[0008] The platform body has a square cargo base plate at its bottom for loading cargo. The four corner points on the lower side of the cargo base plate are provided with downward-extending positioning posts. The upper side of the cargo base plate is provided with a platform frame. The platform frame is provided with several lifting rings that are evenly arranged on it and connected to the low-altitude aircraft. The cargo base plate is provided with several through unit holes for installing counterweights.

[0009] A guide plate, the shape of which is adapted to the base plate of the carrier, includes a fixed frame and a display plate located within the fixed frame, and guide holes are provided at the four corner points of the fixed frame.

[0010] The base is adapted to the shape of the loading base plate and includes a base body and positioning seats located at the four corners of the base body. Each positioning seat is provided with a weight sensor.

[0011] Preferably, the guide plate is disposed between the platform body and the base, and the positioning pins at the four corners of the lower side of the platform body pass through the guide holes and are respectively inserted into the positioning seats of the base and in contact with the weight sensor;

[0012] It also includes a control device, which receives weight data detected by four weight sensors and determines the offset coordinate of the overall center of gravity of the platform body relative to the origin O of the base coordinate system based on the weight data of the four weight sensors and the distance S between the positioning seats. The control device controls the display panel to display the data based on the determined offset coordinate to guide the workers to load goods and / or the counterweights.

[0013] Preferably, the display panel includes a plurality of display units, each of which is respectively configured to correspond one-to-one with the unit hole, and the control device controls the plurality of display units to perform display according to the offset coordinates.

[0014] Preferably, a first fixing part is provided on the upper side of each unit hole on the loading base plate, and a second fixing part is provided in the middle of each unit hole. The counterweight includes a first counterweight and a second counterweight. The first fixing part is used to install the first counterweight, and the second fixing part is used to install the second counterweight.

[0015] Preferably, the first counterweight includes a first base, a first handle is provided on the top of the first base, and a plurality of first mounting parts are provided on the outer periphery of the upper side of the first base, the first mounting parts cooperating with the first fixing parts.

[0016] Preferably, the second counterweight includes a second base, a second handle is provided on the top of the second base, and a plurality of retractable second mounting parts are provided on the outer periphery of the middle part of the second base, the second mounting parts cooperating with the second fixing parts.

[0017] Preferably, the loading platform further includes a fixing component for connecting the platform body and the guide plate.

[0018] Preferably, the fixing assembly includes a U-shaped fixing clamp and an adjusting screw threaded to one side of the fixing clamp. There is a gap between the guide plate and the base. The lower side of the fixing clamp is connected to the fixing frame, and the upper side is connected to the loading base plate through the adjusting screw. The platform body and the guide plate are connected and fixed by rotating the adjusting screw.

[0019] A method for using a cargo platform includes the following steps:

[0020] S1: Assemble the platform; Place the base on a horizontal surface, insert the positioning post on the underside of the loading base into the guide hole, keep the platform body and the guide plate connected as one, and then insert the positioning post into the positioning seat on the base, so that the guide plate is positioned between the platform body and the base, at which time the positioning post is in stable contact with the weight sensor;

[0021] S2: Loading goods; After the loading platform is assembled, the staff loads the goods in descending order of weight according to the n items; among them, the staff will load m items. i Loaded on the cargo base, the control device is located on the cargo m i After loading is completed, determine the offset coordinate (x) of the overall center of gravity of the platform body. i y i According to the offset coordinate (x) i y i Determine the location at the offset coordinate (x) i y i Adjusting coordinates on the opposite side (-x) i , -y i The control device adjusts the coordinates (-x) according to the coordinates. i , -y i ) control located at the adjustment coordinate (-x i , -y i The nearby display units display a first indication signal to guide workers during the next loading of goods. i+1 At that time, the goods m will be prioritized. i+1 Loaded to the adjusted coordinates (-x) i , -yi On the substrate of the carrier near the object, where i = 1, 2, 3...n-1;

[0022] S3: Center of gravity determination; After the cargo is loaded, the control device determines whether the overall center of gravity of the platform body is within a predetermined range N. If the overall center of gravity of the platform body is within the predetermined range N, the center of gravity adjustment ends; if it is not within the predetermined range N, proceed to step S4.

[0023] S4: Add counterweight; the control device adjusts the offset coordinate (x) at this time. n y n The control device determines the adjustment line L based on the coordinate origin O and the torque balance formula, and then calculates the adjustment coordinate (x, y) on the adjustment line L to adjust the overall center of gravity of the platform body to be located within the predetermined range N. m y m ); After calculation, if the adjusted coordinate (x) exists m y m Then the control device controls the position located at the adjustment coordinate (x) m y m The display unit at the location displays a first indication signal; subsequently, under the guidance of the first indication signal, the staff adds a counterweight block, thereby adjusting the overall center of gravity of the platform body to be within the predetermined range N;

[0024] If the adjusted coordinates (x) do not exist m y m Then the control device will adjust the distance on the straight line L from the offset coordinate (x). n y n The furthest point is determined as the middle coordinate (x) mid y mid The control device controls the adjustment coordinate (x) located in the middle. mid y mid The display unit at point S4 displays a first indication signal; subsequently, the worker adds a counterweight block under the guidance of the first indication signal; step S4 is repeated until the overall center of gravity of the platform body is adjusted to be within the predetermined range N.

[0025] Preferably, when the control device determines that the overall center of gravity of the platform body has been adjusted to be within the predetermined range N, it controls the display unit to display a second indication signal to remind the staff that the overall center of gravity of the platform body has been adjusted.

[0026] Preferably, in step S4, if the adjusted coordinates (x) m y mIf the unit hole at the specified location is not obstructed by cargo, the first counterweight is installed into the unit hole; if the unit hole is obstructed by cargo, the platform body is hoisted to a predetermined height, and then the second counterweight is installed into the unit hole from below.

[0027] Compared with the prior art, the cargo platform for low-altitude aircraft and its usage method provided by the present invention have the following beneficial technical effects:

[0028] 1. In this invention, a plurality of unit holes for mounting counterweights are evenly opened on the cargo base plate, and display units matching the unit holes are provided on the guide plate located at the bottom of the cargo base plate. A control device receives weight data detected by weight sensors at the four corner points of the base. Based on the received weight data and the dimensions of the cargo platform, the offset coordinates of the overall center of gravity of the platform body relative to the origin O of the base coordinate system are determined. The determined offset coordinates are used to control the display units to guide workers in loading cargo and / or counterweights, thereby facilitating the adjustment of the overall center of gravity of the platform body and improving the aircraft's stable flight and hovering capabilities during transportation.

[0029] 2. In this invention, two types of fixing parts are respectively provided on the cargo base plate. Each type of fixing part is adapted to a different type of counterweight. During the adjustment of the platform's overall center of gravity using the counterweight, if the cargo on the cargo base plate does not obstruct the unit holes, the first counterweight is used for adjustment. The first mounting part of the first counterweight is directly engaged with the first fixing part to complete the counterweight installation. If the cargo on the cargo base plate obstructs the unit holes, the second counterweight is used for adjustment. The second mounting part of the second counterweight is engaged with the second fixing part from the underside of the cargo base plate, allowing the second mounting part to insert into the second fixing part to complete the counterweight installation. This allows for simple and convenient adjustment of the platform's overall center of gravity, avoiding the impact of cargo on the counterweight installation. Furthermore, the second fixing part can be used in conjunction with other tools to secure cargo on the cargo base plate, easily preventing cargo from swaying or shifting on the cargo base plate, thus preventing any impact on the aircraft's stable flight and hovering capabilities.

[0030] 3. In this invention, during the loading process, goods are loaded sequentially from heaviest to lightest according to their weight, guiding workers to prioritize loading goods to the adjusted coordinate (-x) during the next loading operation. i , -y iOn the nearby cargo base, the overall center of gravity of the platform is adjusted to within a predetermined range N each time cargo is loaded. If the overall center of gravity of the platform is not within the predetermined range N after loading, counterweights are used for adjustment. This method guides workers to achieve center of gravity balance using the cargo's own weight. When the cargo's own weight alone is insufficient, counterweights are used for adjustment. This approach improves operational efficiency by adjusting the platform's center of gravity during loading and reduces the number of counterweights used, thus avoiding impacting the payload capacity of the low-altitude aircraft.

[0031] Furthermore, by using the counterweight addition method in this invention, the balancing torque provided by the counterweight can be fully utilized, and only a small number of counterweights are needed to achieve the purpose of adjusting the center of gravity, thus avoiding occupying the effective payload of the low-altitude aircraft. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the cargo platform of the present invention;

[0033] Figure 2 This is an exploded view of the cargo platform of the present invention;

[0034] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle;

[0035] Figure 4 This is a front view of the platform of the present invention;

[0036] Figure 5 This is a top view of the platform of the present invention;

[0037] Figure 6 This is a schematic diagram of the counterweight block of the present invention;

[0038] Figure 7 This is a schematic diagram illustrating the calculation of the centroid coordinates in this invention.

[0039] Figure 8 This is a flowchart of the method for using the cargo platform of the present invention.

[0040] The meanings of the symbols marked in the figure are as follows:

[0041] 1. Platform body; 2. Guide plate; 3. Base; 4. Counterweight; 5. Fixing components;

[0042] 11. Load base plate; 12. Unit hole; 13. Positioning column; 14. Platform frame; 15. Lifting ring; 16. First fixing part; 17. Second fixing part;

[0043] 21. Fixed frame; 22. Display panel; 23. Display unit; 24. Guide hole;

[0044] 31. Base body; 32. Positioning seat;

[0045] 41. First counterweight; 42. Second counterweight;

[0046] 411. First base; 412. First handle; 413. First mounting part;

[0047] 421. Second base; 422. Second handle; 423. Second mounting part;

[0048] 51. Fixture; 52. Adjusting screw. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0050] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0051] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0053] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] See appendix Figure 1 -Appendix Figure 8As shown, the present invention provides a cargo platform for low-altitude aircraft, the cargo platform comprising:

[0055] The platform body 1 has a square cargo base plate 11 at its bottom for loading cargo. The cargo base plate 11 has four corner points on its lower side with downward-extending positioning posts 13. The cargo base plate 11 has a platform frame 14 on its upper side. The platform frame 14 has several lifting rings 15 evenly arranged on it for connecting to the low-altitude aircraft. The cargo base plate 11 has several through unit holes 12 evenly arranged on it for installing counterweights 4.

[0056] The guide plate 2 is adapted to the shape of the base plate 11 and includes a fixed frame 21 and a display plate 22 located inside the fixed frame 21. Guide holes 24 are provided at the four corners of the fixed frame 21.

[0057] The base 3 is adapted to the shape of the loading base plate 11 and includes a base body 31 and positioning seats 32 located at the four corners of the base body 31. Each positioning seat 32 is equipped with a weight sensor.

[0058] Preferably, the guide plate 2 is located between the platform body 1 and the base 3. The positioning pins 13 at the four corners of the lower side of the platform body 1 pass through the guide holes 24 and are inserted into the positioning seats 32 of the base 3, respectively, and come into contact with the weight sensor.

[0059] The control device (not shown in the figure) receives weight data (F1, F2, F3, F4) detected by four weight sensors. Based on the weight data (F1, F2, F3, F4) from the four weight sensors and the distance S between the positioning seats 32, it determines the offset coordinates (x, y) of the overall center of gravity of the platform body relative to the coordinate origin O of the base 3. The control device controls the display panel 22 to display the determined offset coordinates (x, y) to guide the staff to load goods and / or counterweights 4.

[0060] Preferably, the display panel 22 includes a plurality of display units 23, each of which is respectively arranged in a one-to-one correspondence with the unit hole 12. The control device controls the plurality of display units 23 to display according to the offset coordinates (x, y). The display unit 23 can be a light tube or a display, using lighting effects to guide the workers in loading goods.

[0061] In the above embodiment, a plurality of unit holes for mounting counterweights are evenly opened on the cargo base plate, and display units matching the unit holes are provided on the guide plate located at the bottom of the cargo base plate. The control device receives weight data detected by weight sensors at the four corner points of the base. Based on the received weight data and the dimensions of the cargo platform, the offset coordinates of the overall center of gravity of the platform body relative to the origin O of the base coordinate system are determined. The determined offset coordinates are used to control the display units to guide the workers in loading cargo and / or counterweights, thereby facilitating the adjustment of the overall center of gravity of the platform body and improving the aircraft's stable flight and hovering capabilities during transportation.

[0062] Preferably, during the loading process, the control device, based on the initially determined offset coordinates (x1, y1), controls several display units located near the adjustment coordinates (-x1, -y1) on the opposite side of the offset coordinates (x1, y1) to display information. This guides the worker to prioritize loading goods onto the loading platform located near the adjustment coordinates (-x1, -y1) during the next loading, thereby adjusting the overall center of gravity of the platform body to within a predetermined range N. Subsequently, the control device again controls several display units located near the adjustment coordinates (-x2, -y2) on the opposite side of the offset coordinates (x2, y2) to display information based on the real-time determined offset coordinates (x2, y2), and so on, until all goods are loaded.

[0063] Once the cargo is loaded, if the overall center of gravity of the platform is within the predetermined range N, no further center of gravity adjustment will be performed. If the overall center of gravity of the platform is still not within the predetermined range N, the control device will adjust the center of gravity according to the offset coordinate (x) determined at this time. n y n ) Calculate the adjusted coordinates (x m y m ), then control is located at the adjustment coordinate (x) m y m The display unit at (x) will show the information and guide the staff to adjust the coordinates (x). m y m Load goods at point N to adjust the overall center of gravity of the platform to within the predetermined range N.

[0064] Preferably, a first fixing part 16 is provided on the upper side of each unit hole 12 on the loading base plate 11, and a second fixing part 17 is provided in the middle of each unit hole 12. The counterweight 4 includes a first counterweight 41 and a second counterweight 42. The first fixing part 16 is used to install the first counterweight 41, and the second fixing part 17 is used to install the second counterweight 42. In this invention, the second fixing part 17 can not only be used to install the second counterweight 42, but can also be used in conjunction with other fastening tools to fix the goods on the loading base plate 11. For example, a traction rope can be passed through the second fixing part 17 to fix the goods to the loading base plate 11, preventing the goods from shaking or shifting on the loading base plate 11. This invention does not limit the form of the fastening tool, as long as it can cooperate with the second fixing part to fix the goods.

[0065] Preferably, the first counterweight 41 includes a first base 411, a first handle 412 is provided on the top of the first base 411, and a plurality of first mounting parts 413 are provided on the outer periphery of the upper side of the first base 411, the first mounting parts 413 cooperating with the first fixing part 16.

[0066] Preferably, the second counterweight 42 includes a second base 421, a second handle 422 is provided on the top of the second base 421, and a plurality of retractable second mounting parts 423 are provided on the outer periphery of the middle part of the second base 421, the second mounting parts 423 cooperating with the second fixing part 17.

[0067] Preferably, the second mounting part 423 is connected to the second base 421 by a spring. During the process of the second counterweight 42 being inserted into the unit hole 12, the spring is in a contracted state; when the second mounting part 423 is inserted into the second fixing part 17, the spring is in a released state.

[0068] Preferably, the loading platform further includes a fixing component 5, which connects the platform body 1 and the guide plate 2. The fixing component 5 includes a U-shaped fixing clamp 51 and an adjusting screw 52 threadedly connected to one side of the fixing clamp 51. There is a gap between the guide plate 2 and the base 3. The lower side of the fixing clamp 51 is connected to the fixing frame 21, and the upper side is connected to the loading base plate 11 via the adjusting screw 52. Rotating the adjusting screw 52 connects and fixes the platform body 1 and the guide plate 2, thus enabling simple and convenient connection and fixation of the platform body 1 and the guide plate 2, facilitating the assembly and disassembly of the loading platform. Of course, other forms of fixing components can also be used to connect and fix the platform body and the guide plate, such as having threaded holes in the platform body and the guide plate respectively, and using bolts to connect and fix the platform body and the guide plate.

[0069] In the above embodiment, two types of fixing parts are respectively provided on the cargo base plate. Each type of fixing part is adapted to a different type of counterweight. During the adjustment of the platform's overall center of gravity using the counterweight, if the cargo on the cargo base plate does not obstruct the unit holes, the first counterweight is used for adjustment. The first mounting part of the first counterweight is directly engaged with the first fixing part to complete the counterweight installation. If the cargo on the cargo base plate obstructs the unit holes, the second counterweight is used for adjustment. The second mounting part of the second counterweight is engaged with the second fixing part from the underside of the cargo base plate, allowing the second mounting part to insert into the second fixing part to complete the counterweight installation. This allows for simple and convenient adjustment of the platform's overall center of gravity, avoiding the impact of cargo on the counterweight installation. Furthermore, the second fixing part can be used in conjunction with other tools to secure cargo on the cargo base plate, easily preventing cargo from swaying or shifting on the cargo base plate, thus preventing any impact on the aircraft's stable flight and hovering capabilities.

[0070] The present invention also provides a method for using a cargo platform for a low-altitude aircraft, the method comprising the following steps:

[0071] S1: Assemble the platform; Place the base 3 on a horizontal ground, insert the positioning post 13 on the lower side of the loading base plate 11 into the guide hole 24, keep the platform body 1 and the guide plate 2 connected as one, and then insert the positioning post 13 into the positioning seat 32 on the base 3, so that the guide plate 2 is located between the platform body 1 and the base 3. At this time, the positioning post 13 is in stable contact with the weight sensor.

[0072] S2: Loading Goods; After the loading platform is assembled, the staff loads the goods in descending order of weight, based on the n items. Specifically, the staff loads the m items... i Loaded on the cargo base 11, the control device is located on the cargo m i After loading is complete, determine the offset coordinates (x, y) of the overall center of gravity of the platform body. i y i ), based on offset coordinates (x) i y i Determine the location at the offset coordinate (x) i y i Adjusting coordinates on the opposite side (-x) i , -y i The control device adjusts the coordinates (-x) i , -y i ) Control is located at the adjustment coordinate (-x) i , -y i Several display units nearby display the first indication signal to guide workers during the next loading of goods. i+1 At that time, priority should be given to goods m i+1Load to the adjusted coordinates (-x) i , -y i On the loading base plate 11 near the cargo, where i = 1, 2, 3...n-1. Repeat the above process until the cargo is loaded. Preferably, in step S2, the plurality of display units located near the adjustment coordinates include the display unit 23 at the adjustment coordinates and other display units 23 adjacent to the display unit 23.

[0073] S3: Center of gravity determination; After the cargo is loaded, the control device determines whether the overall center of gravity of the platform body is within the predetermined range N. If the overall center of gravity of the platform body is within the predetermined range N, the center of gravity adjustment ends; if it is not within the predetermined range N, proceed to step S4.

[0074] S4: Add counterweight; the control device adjusts the offset coordinate (x) at this time. n y n The adjustment line L is determined by the coordinate origin O. Then, the control device calculates the adjustment coordinates (x, y, y) on the adjustment line L according to the torque balance formula, adjusting the overall center of gravity of the platform body to within a predetermined range N. m y m ). Calculations show that if there is an adjustment coordinate (x) m y m This indicates that adding a counterweight will adjust the overall center of gravity of the platform to within a predetermined range N. Therefore, the control device will be positioned at the adjustment coordinate (x...). m y m The display unit at the location displays the first indication signal; subsequently, under the guidance of the first indication signal, the staff adds a counterweight block, thereby adjusting the overall center of gravity of the platform body to be within the predetermined range N.

[0075] If there is no adjustment of coordinates (x) m y m This indicates that adding a counterweight cannot adjust the overall center of gravity of the platform body to within the predetermined range N. Therefore, the control device will adjust the distance offset coordinate (x) on the straight line L. n y n The furthest point is determined as the middle coordinate (x) mid y mid The control device controls the adjustment of the coordinates (x) in the middle. mid y mid The display unit at point S4 displays the first indication signal; subsequently, guided by the first indication signal, the worker adds a counterweight. Step S4 is repeated until the overall center of gravity of the platform body is adjusted to be within the predetermined range N.

[0076] Preferably, when the control device determines that the overall center of gravity of the platform body has been adjusted to within a predetermined range N, the control display unit displays a second indication signal to remind the staff that the overall center of gravity of the platform body has been adjusted.

[0077] Preferably, in step S4, if the coordinates (x) are adjusted... m y m If the unit hole 12 at the location is not obstructed by cargo, the first counterweight 41 is installed into the unit hole 12. If the unit hole 12 is obstructed by cargo, the platform body 1 is hoisted to a predetermined height, and the second counterweight 42 is installed into the unit hole 12 from below. After the counterweights are installed, the positioning post 13 on the lower side of the loading base plate 11 is inserted into the guide hole 24, keeping the platform body 1 and the guide plate 2 connected as one unit. The lower side of the fixing clamp 51 is connected to the fixing frame 21, and the upper side is connected to the loading base plate 11 through the adjusting screw 52. The adjusting screw 52 is rotated to connect and fix the platform body 1 and the guide plate 2. During cargo transportation, the guide plate can support the counterweights, avoiding the risk of the counterweights falling from a height.

[0078] Preferably, after the counterweight is installed, a fastening tool is used in conjunction with the second fixing part 17 to fix the goods on the loading base plate 11, preventing the goods from shaking or shifting on the loading base plate 11.

[0079] In the above implementation, during the loading process, goods are loaded in descending order of weight according to their mass, and workers are guided to prioritize loading goods to the location of the adjustment coordinate (-x) during the next loading. i , -y i On the nearby cargo base, the overall center of gravity of the platform is adjusted to within a predetermined range N each time cargo is loaded. If the overall center of gravity of the platform is not within the predetermined range N after loading, counterweights are used for adjustment. This method guides workers to achieve center of gravity balance using the cargo's own weight. When the cargo's own weight alone is insufficient, counterweights are used for adjustment. This approach improves operational efficiency by adjusting the platform's center of gravity during loading and reduces the number of counterweights used, thus avoiding impacting the payload capacity of the low-altitude aircraft.

[0080] Furthermore, by using the counterweight addition method in step S4 of this invention, the balancing torque provided by the counterweight can be fully utilized, and only a small number of counterweights are needed to achieve the purpose of adjusting the center of gravity, thus avoiding occupying the effective payload of the low-altitude aircraft.

[0081] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A cargo platform for low-altitude aircraft, characterized in that, The cargo platform includes: The platform body has a square cargo base plate at its bottom for loading cargo. The four corner points on the lower side of the cargo base plate are provided with downward-extending positioning posts. The upper side of the cargo base plate is provided with a platform frame. The platform frame is provided with several lifting rings that are evenly arranged on it and connected to the low-altitude aircraft. The cargo base plate is provided with several through unit holes for installing counterweights. A guide plate, the shape of which is adapted to the base plate of the carrier, includes a fixed frame and a display plate located within the fixed frame, and guide holes are provided at the four corner points of the fixed frame. The base is adapted to the shape of the loading base plate and includes a base body and positioning seats located at the four corners of the base body. Each positioning seat is provided with a weight sensor. It also includes a control device that controls the display panel to display information based on determined offset coordinates, so as to guide workers in loading goods and / or the counterweights; The display panel includes a plurality of display units, each of which is respectively configured to correspond one-to-one with the unit hole. The control device controls the plurality of display units to display according to the offset coordinates. During the loading process, the control device controls several display units near the adjustment coordinates on the opposite side of the initially determined offset coordinates to display information. This guides the workers to prioritize loading the cargo onto the loading platform near the adjustment coordinates during the next loading, thereby adjusting the overall center of gravity of the platform body to within the predetermined range N. Subsequently, the control device again controls several display units near the adjustment coordinates on the opposite side of the offset coordinates to display information, until the cargo loading is complete. After the cargo is loaded, if the overall center of gravity of the platform body is still not adjusted to within the predetermined range N, the control device calculates the adjustment coordinates based on the offset coordinates determined at this time, and then controls the display unit located at the adjustment coordinates to display the information.

2. The cargo platform for low-altitude aircraft as described in claim 1, characterized in that: A first fixing part is provided on the upper side of each unit hole on the loading base plate, and a second fixing part is provided in the middle of each unit hole. The counterweight includes a first counterweight and a second counterweight. The first fixing part is used to install the first counterweight, and the second fixing part is used to install the second counterweight.

3. The cargo platform for low-altitude aircraft as described in claim 2, characterized in that: The first counterweight includes a first base, a first handle is provided on the top of the first base, and a plurality of first mounting parts are provided on the outer periphery of the upper side of the first base, the first mounting parts cooperating with the first fixing parts; The second counterweight includes a second base, a second handle is provided on the top of the second base, and a plurality of retractable second mounting parts are provided on the outer periphery of the middle part of the second base, the second mounting parts cooperating with the second fixing parts.

4. The cargo platform for low-altitude aircraft as described in claim 3, characterized in that: The cargo platform also includes a fixing component for connecting the platform body and the guide plate.

5. The cargo platform for low-altitude aircraft as described in claim 4, characterized in that: The fixing assembly includes a U-shaped fixing clamp and an adjusting screw threaded to one side of the fixing clamp. There is a gap between the guide plate and the base. The lower side of the fixing clamp is connected to the fixing frame, and the upper side is connected to the loading base plate through the adjusting screw. The platform body and the guide plate are connected and fixed by rotating the adjusting screw.

6. A method of using a cargo platform, wherein the cargo platform is the cargo platform for low-altitude aircraft as described in claim 5, characterized in that, Includes the following steps: S1: Assemble the platform; Place the base on a horizontal surface, insert the positioning post on the underside of the loading base into the guide hole, keep the platform body and the guide plate connected as one, and then insert the positioning post into the positioning seat on the base, so that the guide plate is positioned between the platform body and the base, at which time the positioning post is in stable contact with the weight sensor; S2: Loading goods; After the loading platform is assembled, the staff loads the goods in descending order of weight according to the n items; among them, the staff will load m items. i Loaded on the cargo base, the control device is located on the cargo m i After loading is completed, determine the offset coordinate (x) of the overall center of gravity of the platform body. i y i According to the offset coordinates (x) i y i Determine the location at the offset coordinate (x) i y i Adjusting coordinates on the opposite side (-x) i , -y i The control device adjusts the coordinates (-x) according to the coordinates. i , -y i ) Control located at the adjustment coordinate (-x) i , -y i The nearby display units display a first indication signal to guide workers during the next loading of goods. i+1 At that time, the goods m will be prioritized. i+1 Loaded to the adjusted coordinates (-x) i , -y i On the substrate of the carrier near the object, where i = 1, 2, 3...n-1; S3: Center of gravity determination; After the cargo is loaded, the control device determines whether the overall center of gravity of the platform body is within a predetermined range N. If the overall center of gravity of the platform body is within the predetermined range N, the center of gravity adjustment ends; if it is not within the predetermined range N, proceed to step S4. S4: Add counterweight; the control device adjusts the offset coordinate (x) at this time. n y n The control device determines the adjustment line L based on the coordinate origin O and the torque balance formula, and then calculates the adjustment coordinate (x, y) on the adjustment line L to adjust the overall center of gravity of the platform body to be located within the predetermined range N. m y m ); After calculation, if the adjusted coordinate (x) exists m y m Then the control device controls the position located at the adjustment coordinate (x) m y m The display unit at the location displays a first indication signal; subsequently, under the guidance of the first indication signal, the staff adds a counterweight block, thereby adjusting the overall center of gravity of the platform body to be within the predetermined range N; If the adjusted coordinates (x) do not exist m y m Then the control device will adjust the distance on the straight line L from the offset coordinate (x). n y n The furthest point is determined as the middle coordinate (x) mid y mid The control device controls the adjustment coordinate (x) located in the middle. mid y mid The display unit at point S4 displays a first indication signal; subsequently, the worker adds a counterweight block under the guidance of the first indication signal; step S4 is repeated until the overall center of gravity of the platform body is adjusted to be within the predetermined range N.

7. The method of using the cargo platform as described in claim 6, characterized in that: When the control device determines that the overall center of gravity of the platform body has been adjusted to be within the predetermined range N, it controls the display unit to display a second indication signal to remind the staff that the overall center of gravity of the platform body has been adjusted.

8. The method of using the cargo platform as described in claim 7, characterized in that: In step S4, if the adjusted coordinates (x) m y m If the unit hole at position ) is not blocked by the goods, then the first counterweight block is installed into the unit hole; If the unit hole is blocked by cargo, the platform body is hoisted to the predetermined height, and then the second counterweight is installed into the unit hole from below.

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