Modular scalable unmanned aerial vehicle payload bay structure

Abstract

The utility model relates to unmanned plane technical field discloses a modularization extensible unmanned plane load cabin structure to solve the low space utilization, high energy consumption, poor scene adaptability of existing fixed capacity unmanned plane load cabin problem. The structure includes main cabin, and the mounting bracket of unmanned plane is equipped through bolt connection main cabin top and is equipped with the cabin door with lock, still includes 1 or symmetric 2 with main cabin same model extension cabin, and extension cabin is connected with main cabin through dismounting assembly, and main cabin top is equipped with balance assembly, and mounting bracket is installed in main cabin top through balance assembly. Dismounting assembly is convenient for extension cabin quick dismounting, and balance assembly can adjust mounting bracket position to guarantee flight balance. The structure can control load amount as needed, reduce redundant space to reduce energy consumption, prolong endurance, need not to replace unmanned plane, effectively improve unmanned plane operation efficiency and application scope, adapt to logistics, emergency rescue and so on many scenes.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a modular and scalable UAV payload bay structure. Background Technology

[0002] As drone applications expand from aerial surveying and mapping to logistics transportation, emergency rescue, and other fields, the payload compartment, as the core component of the drone that carries the payload, has the following core functions: to provide a stable storage space for the payload to avoid damage during flight, to achieve uniform weight distribution of the payload to maintain flight stability, and to be compatible with installation at the bottom of the fuselage to reduce airflow interference and facilitate loading and unloading.

[0003] Most current mainstream drone payload bays are integrated fixed structures, which have obvious limitations and are difficult to adapt to diverse transportation needs: On the one hand, when transporting a small amount of load (such as a single package or a single medicine), the fixed volume of the cabin can easily generate a lot of redundant space, which not only wastes storage resources, but also increases the power consumption of the drone due to the fixed weight of the cabin itself, thus shortening the flight range. On the other hand, when a large load (such as multiple items of goods or multiple packages) needs to be transported, the fixed capacity cannot meet the loading requirements, and a dedicated drone needs to be replaced, which increases equipment costs and reduces the flexibility of mission execution, and may delay the opportunity in emergency scenarios.

[0004] In summary, existing fixed-capacity payload bays have shortcomings in space utilization, energy consumption control, and scenario adaptability, and cannot meet the multi-scenario transportation needs of UAVs. There is an urgent need for a payload bay structure with flexible capacity adjustment to improve the operational efficiency and applicability of UAVs. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a modular and scalable UAV payload bay structure that allows for flexible adjustment of the payload capacity of the payload bay as needed, thereby improving the operational efficiency and applicability of UAVs.

[0006] This utility model discloses a modular and expandable UAV payload bay structure, including a main bay, a mounting bracket on the top of the main bay, the mounting bracket being fixed to the bottom of the UAV by bolts, and a lockable door in the main bay. It also includes: The expansion compartment can be configured as one or two symmetrically arranged about the main compartment, and the expansion compartment is connected to the main compartment via a disassembly and assembly component; A balancing assembly is installed at the top of the main cabin, and the mounting bracket is installed on the top of the main cabin through the balancing assembly; The extended cabin is the same model as the main cabin.

[0007] Furthermore, the assembly / disassembly assembly includes a connecting block, a pin, and a positioning shaft. The connecting block is installed on the side wall of the main cabin. A pin hole is provided through the front end of the connecting block, and the pin can be slidably inserted into the pin hole. A fixing bracket is provided at one end of the circumferential side wall of the pin, and the other end of the fixing bracket is connected to the side wall of the expansion cabin. A lower positioning block is installed in the middle of the side wall of the main cabin near the hatch. An upper positioning block is installed at the top of the side wall of the expansion cabin facing the main cabin near the hatch. Both the upper and lower positioning blocks have through holes from top to bottom. The upper positioning block is located directly above the lower positioning block, and after the expansion cabin is installed on the main cabin, the axis of the through hole of the upper positioning block coincides with the axis of the through hole of the lower positioning block. The fixing bracket is in close contact with the connecting block. The positioning shaft slides through the through hole of the upper positioning block and continues to slide into the through hole of the lower positioning block. A positioning handle is provided at the top of the positioning shaft, and a locking assembly is provided between the positioning handle and the upper positioning block.

[0008] Furthermore, the balancing assembly includes a support plate with two parallel T-shaped grooves at its top. The T-shaped grooves are perpendicular to the side wall of the main cabin facing the extension cabin. The bottom of the mounting frame has two T-shaped rails that are slidably engaged with the two T-shaped grooves. Limiting components are provided at the bottom of the two opposite side walls of the mounting frame that are perpendicular to the T-shaped grooves.

[0009] Furthermore, the front end of the connecting block is provided with a guide plate, and the top end of the guide plate is provided with a semi-circular guide groove. The diameter of the semi-circular guide groove is the same as the diameter of the pin hole, and the semi-circular guide groove is aligned with the lower middle area of ​​the pin hole.

[0010] Furthermore, the locking assembly includes a locking threaded rod, which is coaxially mounted between the positioning handle and the positioning shaft. A locking threaded ring is provided at the top of the upper positioning block. The locking threaded ring is provided with an internal thread and is coaxially arranged with the through hole of the upper positioning block. After the positioning shaft passes through the through hole of the upper positioning block and the through hole of the lower positioning block respectively, the locking threaded rod is threadedly connected to the locking threaded ring.

[0011] Furthermore, the limiting assembly includes two limiting plates, which are respectively installed at the bottom of two opposite side walls of the mounting frame. The top of the limiting plate is provided with a limiting threaded hole, and a limiting threaded rod with a limiting handle is threadedly connected inside the limiting threaded hole. The top of the support plate is provided with two limiting holes. When the mounting frame is located directly above the main cabin, the two limiting holes are located directly below the limiting threaded holes of the two limiting plates, and the two limiting threaded rods are respectively inserted into the two limiting holes.

[0012] Furthermore, both of the T-shaped slide rails are equipped with L-shaped protective bars, which are located on opposite sides of the support plate. The front end of the support plate away from the front L-shaped protective bar and the rear end of the support plate away from the rear L-shaped protective bar are both equipped with blocks. When the L-shaped protective bar moves with the T-shaped slide rail to the position of the block on the same side, the block can prevent the L-shaped protective bar from continuing to move in the same direction.

[0013] Furthermore, the assembly and disassembly components are provided with at least two connecting blocks, and the number of pins and guide plates is adapted to the number of connecting blocks.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Load capacity can be flexibly adjusted as needed: By combining the main cabin with one or two symmetrical extension cabins, it can meet the transportation needs of small loads and adapt to the transportation scenarios of large loads, avoiding the problems of "redundancy and waste" or "insufficient capacity" of existing fixed capacity cabins.

[0015] 2. Reduce energy consumption and improve endurance: When only a small amount of payload is transported in the main cabin, the extra weight of the redundant cabin can be reduced, the power consumption of the drone can be reduced, the endurance of the drone can be effectively extended, and the endurance of the existing fixed cabin can be solved due to its own weight.

[0016] 3. Reduce equipment costs and improve scenario adaptability: There is no need to replace dedicated drones due to changes in payload. By disassembling and assembling the expansion compartment, it can be adapted to multiple scenarios such as logistics transportation and emergency rescue, reducing equipment investment costs and improving mission execution flexibility, avoiding delays in emergency scenarios.

[0017] 4. Ensure flight stability: The balancing component at the top of the main cabin can adjust the position of the mounting bracket to ensure the overall center of gravity of the UAV is balanced after the expansion cabin is installed, solving the problem of flight instability that may be caused by changes in payload; and the disassembly and assembly components can achieve a stable connection between the main cabin and the expansion cabin, further ensuring flight safety.

[0018] 5. Easy assembly and disassembly and strong versatility: The assembly and disassembly components have a simple structure and can be quickly assembled and disassembled with the guide components; the expansion compartment is the same model as the main compartment, with high versatility, reducing spare parts inventory costs and improving operational convenience. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the utility model Figure 1 A magnified schematic diagram of the structure of part A in the diagram; Figure 3 This is an exploded view of the connection structure of this utility model; Figure 4 This is the utility model Figure 3A magnified schematic diagram of the partial structure of B in the diagram; The following labels are used in the attached diagram: 1. Main compartment; 2. Mounting bracket; 3. Door; 4. Extension compartment; 5. Connecting block; 6. Pin; 7. Positioning shaft; 8. Fixing bracket; 9. Lower positioning block; 10. Upper positioning block; 11. Positioning handle; 12. Support plate; 13. T-shaped slide rail; 14. T-shaped slide rail; 15. Guide plate; 16. Locking threaded rod; 17. Locking threaded ring; 18. Limiting plate; 19. Limiting handle; 20. Limiting threaded rod; 21. L-shaped protective rod; 22. Stop block. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] like Figures 1 to 4 As shown, the modular and expandable UAV payload bay structure of this utility model includes a main bay 1, a mounting bracket 2 on the top of the main bay 1, the mounting bracket 2 being fixed to the bottom of the UAV by bolts, and a lockable door 3 for the main bay 1. It also includes: Extension 4, which can be configured as one or two symmetrically arranged about the main cabin 1, and the extension 4 is connected to the main cabin 1 through a disassembly and assembly component; A balancing assembly is provided at the top of the main cabin 1, and the mounting bracket 2 is installed on the top of the main cabin 1 through the balancing assembly; The extended cabin 4 is of the same model as the main cabin 1; In this embodiment, Main Module 1: As the core basic carrier of the payload compartment, it provides initial storage space for the payload and also supports the installation of components such as the expansion module 4, the balancing assembly, and the mounting frame 2. It is the main frame of the entire payload compartment structure. Its lockable door 3 can close the compartment to prevent the payload from falling or being disturbed by the outside world during flight, thus ensuring the safety of the payload. Mounting bracket 2: One end is fixed to the bottom of the drone with bolts, and the other end is connected to the balancing component at the top of the main cabin 1. It is the core component connecting the payload cabin and the drone fuselage. It is responsible for transferring the weight of the payload cabin and the internal load to the drone, and at the same time, it works with the balancing component to adjust the position to adapt to the center of gravity balance. Expansion Module 4: It is specified that "one module can be set up or two modules can be set up symmetrically about the main module 1" and "the same model as the main module 1". Its core function is to expand the total volume of the load compartment as needed. It can be removed when transporting a small load to avoid wasting redundant space; it can be added when transporting a large load to meet the large capacity requirements and adapt to diverse transportation scenarios. Disassembly and assembly components: The core component connecting the main compartment 1 and the expansion compartment 4, enabling rapid assembly and disassembly of the two. It ensures a stable connection during installation and facilitates efficient operation during removal. It is a key component for the "modular and expandable" function. Balance component: The core component installed at the top of the main cabin 1 and connecting the main cabin 1 and the mounting frame 2. It can adjust the position of the mounting frame 2 on the main cabin 1 to ensure that the overall center of gravity of the payload compartment after the extension cabin 4 is installed matches the UAV, avoids the center of gravity shift that may cause flight instability, and ensures flight safety.

[0022] As a preferred embodiment of the above embodiment, the disassembly and assembly assembly includes a connecting block 5, a pin 6, and a positioning shaft 7. The connecting block 5 is installed on the side wall of the main cabin 1, and a pin hole is provided through the front end of the connecting block 5. The pin 6 can be slidably inserted into the pin hole. A fixing bracket 8 is provided at one end of the circumferential side wall of the pin 6, and the other end of the fixing bracket 8 is connected to the side wall of the expansion cabin 4. A lower positioning block 9 is installed in the middle of the side wall of the main cabin 1 near the hatch 3. An upper positioning block 10 is installed on the top of the side wall of the expansion cabin 4 facing the main cabin 1 near the hatch 3. Both the positioning block 10 and the lower positioning block 9 have through holes from top to bottom. The upper positioning block 10 is located directly above the lower positioning block 9. After the expansion compartment 4 is installed on the main compartment 1, the axis of the through hole of the upper positioning block 10 coincides with the axis of the through hole of the lower positioning block 9. The fixing bracket 8 is in close contact with the connecting block 5. The positioning shaft 7 slides through the through hole of the upper positioning block 10 and continues to slide into the through hole of the lower positioning block 9. The top of the positioning shaft 7 is provided with a positioning handle 11. A locking component is provided between the positioning handle 11 and the upper positioning block 10. In this embodiment, Connecting block 5: It is fixedly installed on the side wall of the main cabin 1, provides an insertion hole for the pin 6, and is the connection fulcrum on the side of the main cabin 1. It transmits the force of the extension cabin 4 to the main cabin 1, ensuring the structural foundation for the connection between the main cabin 1 and the extension cabin 4. Pin 6: It can be slidably inserted into the pin hole of the connecting block 5. One end is connected to the expansion compartment 4 through the fixing bracket 8, and the other end cooperates with the connecting block 5 to realize the initial positioning and mechanical connection between the main compartment 1 and the expansion compartment 4. It is the "bridge" component connecting the two. Positioning shaft 7: After the expansion compartment 4 is initially positioned, it slides through the coaxial through hole of the upper positioning block 10 (expansion compartment 4 side) and the lower positioning block 9 (main compartment 1 side) to further strengthen the connection between the main compartment 1 and the expansion compartment 4, prevent the two from being displaced relative to each other due to vibration during flight, and enhance the stability of the connection. Fixture 8: One end is connected to the circumferential side wall of the pin 6, and the other end is fixed to the side wall of the expansion compartment 4. It is a force transmission component connecting the expansion compartment 4 and the pin 6, which transmits the weight and vibration load of the expansion compartment 4 to the pin 6, so as to avoid the expansion compartment 4 being directly subjected to force and thus being damaged. Lower positioning block 9: Installed in the middle of the side wall of the main cabin 1 near the hatch 3. Its through hole is coaxial with the through hole of the upper positioning block 10 after the expansion cabin 4 is installed, providing a lower insertion channel for the positioning shaft 7, ensuring that the positioning shaft 7 is accurately inserted, and assisting in the position calibration of the main cabin 1 and the expansion cabin 4. Upper positioning block 10: Installed on the top of the side wall of the extension compartment 4 facing the main compartment 1 near the door 3, precisely corresponding to the lower positioning block 9. Its through hole provides an upper insertion channel for the positioning shaft 7, ensuring the coaxiality of the main compartment 1 and the extension compartment 4 after installation and avoiding misalignment; Positioning handle 11: Fixed to the top of the positioning shaft 7, providing a gripping point for the operator, making it easy to manually insert and remove the positioning shaft 7, improving the convenience of disassembly and assembly operations, and reducing the difficulty of manual operation; Locking assembly: Installed between the positioning handle 11 and the upper positioning block 10, used to fix the position of the positioning shaft 7, prevent the positioning shaft 7 from falling off during flight vibration, and further enhance the connection reliability of the disassembly and assembly assembly.

[0023] As a preferred embodiment of the above, the balancing assembly includes a support plate 12, the top of which is provided with two parallel T-shaped slides 13, the T-shaped slides 13 being perpendicular to the side wall of the main cabin 1 facing the extension cabin 4, the bottom of the mounting frame 2 being provided with two T-shaped slide rails 14, the two T-shaped slide rails 14 being slidably engaged with the two T-shaped slides 13 respectively, and the bottom of the two opposite side walls of the mounting frame 2 perpendicular to the T-shaped slides 13 are provided with limit components; In this embodiment, Support plate 12: It is fixedly installed on the top of the main cabin 1, providing an installation surface for the T-shaped slide 13 and the limiting component. It is the basic load-bearing frame of the balancing component and transmits the weight load between the main cabin 1 and the mounting frame 2. T-shaped slide rail 13: It is opened at the top of the support plate 12 and is perpendicular to the side wall of the main compartment 1 facing the extension compartment 4. It slides and cooperates with the T-shaped slide rail 14 at the bottom of the mounting frame 2 to realize the horizontal movement of the mounting frame 2 on the support plate 12. It is a key sliding structure for adjusting the position of the mounting frame 2 and adapting to the balance of the center of gravity. T-shaped slide rail 14: Fixed at the bottom of the mounting bracket 2, it slides and engages with the T-shaped slide groove 13, and moves synchronously with the mounting bracket 2 to ensure the stability of the mounting bracket 2 during adjustment and avoid deviation. It is the core actuator of the balancing component to achieve "position adjustment". Limiting components: installed at the bottom of the two opposite side walls perpendicular to the mounting frame 2 and the T-shaped slide 13, fixing their position after the mounting frame 2 is adjusted to the target position, preventing the mounting frame 2 from sliding during flight and causing the center of gravity to shift, thus ensuring the stability of the balance state.

[0024] As a preferred embodiment of the above, the front end of the connecting block 5 is provided with a guide plate 15, the top end of the guide plate 15 is provided with a semi-circular guide groove, the diameter of the semi-circular guide groove is the same as the diameter of the pin hole, and the semi-circular guide groove is aligned with the lower middle area of ​​the pin hole. In this embodiment, Guide plate 15: Fixed to the front end of connecting block 5, providing an installation base for the semi-circular guide groove, and assisting the pin 6 to be inserted into the pin hole of connecting block 5, thereby improving the ease of operation for disassembling and assembling components; Semi-circular guide groove: It is opened at the top of the guide plate 15, and its diameter is the same as the diameter of the pin hole of the connecting block 5. It is aligned with the lower part of the pin hole and plays a "guiding and positioning" role when the pin shaft 6 is inserted into the pin hole, helping the operator to quickly align the pin hole, reduce insertion and removal errors, and improve the disassembly and assembly efficiency of the expansion compartment 4.

[0025] As a preferred embodiment of the above embodiment, the locking assembly includes a locking threaded rod 16, which is coaxially mounted between the positioning handle 11 and the positioning shaft 7. A locking threaded ring 17 is provided at the top of the upper positioning block 10. The locking threaded ring 17 is provided with an internal thread and is coaxially arranged with the through hole of the upper positioning block 10. After the positioning shaft 7 passes through the through hole of the upper positioning block 10 and the through hole of the lower positioning block 9 respectively, the locking threaded rod 16 is threadedly connected to the locking threaded ring 17. In this embodiment, Locking thread rod 16: Coaxially fixed between positioning handle 11 and positioning shaft 7, with external threads on the outer surface, and cooperates with locking thread ring 17 to achieve "threaded locking". It is the core component for fixing positioning shaft 7 and ensures the connection stability of disassembly and assembly components. Locking threaded ring 17: Fixed to the top of the upper positioning block 10, coaxial with the through hole of the upper positioning block 10, with internal thread on the inner surface, and threadedly connected to the locking threaded rod 16, firmly fixing the positioning shaft 7 on the upper positioning block 10, preventing the positioning shaft 7 from falling off, and enhancing the connection reliability of the disassembly and assembly components.

[0026] As a preferred embodiment of the above embodiment, the limiting component includes two limiting plates 18, which are respectively installed at the bottom of two opposite side walls of the mounting frame 2. The top of the limiting plate 18 is provided with a limiting threaded hole, and a limiting threaded rod 20 with a limiting handle 19 is threadedly connected in the limiting threaded hole. The top of the support plate 12 is provided with two limiting holes. When the mounting frame 2 is located directly above the main cabin 1, the two limiting holes are located directly below the limiting threaded holes of the two limiting plates 18, and the two limiting threaded rods 20 are respectively inserted into the two limiting holes. In this embodiment, Limiting plate 18: Two limiting plates 18 are fixed to the bottom of the two opposite side walls of the mounting bracket 2 respectively, providing an installation carrier for the limiting threaded hole. They are the basic frame of the limiting component and bear the installation and force of the limiting threaded rod 20. Limiting threaded hole: It is opened through the top of the limiting plate 18 and is threaded with the limiting threaded rod 20. It provides a channel for the limiting threaded rod 20 to move up and down and is the structural basis for the limiting component to achieve "fixed position". Limiting threaded rod 20: The outer surface has external threads, which are threaded to the limiting threaded hole. The top has a limiting handle 19, which can be rotated to move up and down. After being inserted into the limiting hole of the support plate 12, it fixes the position of the mounting bracket 2 and is the actuating component of the limiting assembly. Limit handle 19: Fixed to the top of the limit threaded rod 20, making it easy for the operator to rotate the limit threaded rod 20, improving the convenience of limit operation, and indirectly ensuring the efficient use of the limit component; Limiting hole: It is opened at the top of the support plate 12 and is coaxial with the limiting threaded hole when the mounting bracket 2 is directly above the main cabin 1. It provides an insertion channel for the limiting threaded rod 20 and is the "reference hole" for positioning the mounting bracket 2 to ensure that the limiting component is accurately fixed.

[0027] As a preferred embodiment of the above embodiment, each of the two T-shaped slide rails 14 is provided with an L-shaped guard rod 21. The two L-shaped guard rods 21 are respectively located on opposite sides of the support plate 12. A stop block 22 is provided on the front end of the support plate 12 away from the front L-shaped guard rod 21 and on the rear end of the support plate 12 away from the rear L-shaped guard rod 21. When the L-shaped guard rod 21 moves with the T-shaped slide rail 14 to the position of the stop block 22 on the same side, the stop block 22 can prevent the L-shaped guard rod 21 from continuing to move in the same direction. In this embodiment, L-shaped guardrail 21: Two L-shaped guardrails 21 are fixed on the T-shaped slide rail 14 respectively, located on opposite sides of the support plate 12, and move synchronously with the T-shaped slide rail 14. They cooperate with the stop block 22 to prevent the T-shaped slide rail 14 from sliding out of the T-shaped slide groove 13, thus protecting the structural integrity of the balance component. Stop 22: Fixed to the front end (the side away from the front L-shaped guard bar 21) and the rear end (the side away from the rear L-shaped guard bar 21) of the support plate 12 respectively. When the L-shaped guard bar 21 moves to the corresponding position, it stops it from moving further, preventing the T-shaped slide rail 14 from falling off and ensuring the sliding safety of the balance component.

[0028] As a preferred embodiment of the above, the connecting block 5 of the disassembly and assembly assembly is provided in at least two, and the number of pins 6 and guide plates 15 is adapted to the number of connecting blocks 5. In this embodiment, Connecting block 5: Multiple connecting blocks 5 are evenly distributed on the side wall of the main compartment 1 and connected to the corresponding parts of the expansion compartment 4, so that the main compartment 1 and the expansion compartment 4 are more evenly stressed, avoiding damage caused by excessive stress on a single connection point, and improving the connection reliability and structural strength of the disassembly and assembly components. Pin 6 and guide plate 15 correspond one-to-one with multiple connecting blocks 5 to ensure that each connection point can achieve precise positioning and stable connection, further enhancing the overall connection performance of the disassembly and assembly components and avoiding local connection failure.

[0029] The working principle of this utility model is as follows: This utility model achieves the core functions of "modular scalability + flight stability" of the payload bay through "component collaboration + auxiliary component adaptation". The specific workflow is as follows: 1. Load requirement adaptation: Selecting structural combinations based on transport load. When transporting a small load (such as a single medicine): use only the main cabin 1, close the lockable cabin door 3 to protect the load, avoid redundant weight and space waste caused by the extended cabin 4, reduce the power consumption of the drone, and extend its flight range; When transporting multiple loads (such as multiple emergency supplies): add one or two expansion compartments 4 (of the same model as the main compartment 1) symmetrical about the main compartment 1. The main compartment 1 and the expansion compartments 4 are connected by disassembling and assembling components to expand the total volume to meet the loading requirements.

[0030] 2. Secure connection of expansion compartment 4: Precise assembly of disassembled and assembled components. Preliminary positioning: The operator guides the pin 6 on the side of the expansion compartment 4 into the pin hole of the connecting block 5 on the side of the main compartment 1 through the semi-circular guide groove of the guide plate 15, so that the fixing frame 8 is in close contact with the connecting block 5, and the initial alignment of the main compartment 1 and the expansion compartment 4 is completed. Precise locking: Pass the positioning shaft 7 through the through hole of the upper positioning block 10 of the expansion cabin 4 and the through hole of the lower positioning block 9 of the main cabin 1 from top to bottom, rotate the positioning handle 11 to make the locking threaded rod 16 threadedly connected with the locking threaded ring 17 of the upper positioning block 10, fix the position of the positioning shaft 7, ensure that there is no relative displacement between the main cabin 1 and the expansion cabin 4, and ensure a stable connection during flight.

[0031] 3. Center of gravity balance adjustment: The balancing components ensure flight stability. Position adjustment: Depending on the installation of the expansion compartment 4 (one on one side or two on both sides), push the mounting bracket 2 so that the T-shaped slide rail 14 at the bottom slides in the T-shaped slide groove 13 of the support plate 12 at the top of the main compartment 1 until the position of the mounting bracket 2 is adapted to the overall center of gravity of the payload compartment (matching the center of gravity of the UAV). Position fixing: Rotate the limit handle 19 on the limit plate 18 to move the limit threaded rod 20 downward along the limit threaded hole and insert it into the limit hole of the support plate 12 to lock the position of the mounting bracket 2 and prevent the mounting bracket 2 from sliding during flight, which would cause the center of gravity to shift; at the same time, the L-shaped protective rod 21 cooperates with the stop block 22 to prevent the T-shaped slide rail 14 from sliding out of the T-shaped slide groove 13 and protect the safety of the balance component structure.

[0032] 4. Payload safety and flight execution: Core components ensure reliability throughout the entire process. Load protection: The lockable hatch 3 of the main cabin 1 and the extension cabin 4 seals the cabin body to prevent the load from falling or being disturbed by airflow during flight; Weight transfer: The mounting bracket 2 is connected to the bottom of the UAV by bolts, which evenly transfers the weight of the main cabin 1, the extension cabin 4 and the payload to the UAV fuselage. In conjunction with the center of gravity position adjusted by the balancing component, it ensures the stability of the UAV attitude during flight and avoids flight risks caused by center of gravity shift.

[0033] 5. Flexible structural adjustment: disassemble and restore to the basic state as needed. When the load decreases, the assembly and disassembly are reversed: first loosen the locking threaded rod 16 and pull out the positioning shaft 7, then pull out the pin 6 to separate the expansion compartment 4 from the main compartment 1. After removing the expansion compartment 4, the assembly and disassembly are restored to the state of only the main compartment 1, which can be adapted to the light load transportation requirements again, realizing the modular function of "one-time installation and multiple flexible adjustments".

[0034] In summary, this utility model solves the problems of "poor adaptability and high energy consumption" of existing fixed-capacity payload compartments by working together with components such as the main compartment 1, the expansion compartment 4, the disassembly and assembly components, and the balancing components. It can be flexibly adapted to multiple scenarios such as logistics and emergency rescue, and improve the efficiency and applicability of UAV operations.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A modular and expandable unmanned aerial vehicle (UAV) payload bay structure, comprising a main bay (1), a mounting bracket (2) disposed on the top of the main bay (1), the mounting bracket (2) being fixed to the bottom of the UAV by bolts, and the main bay (1) being provided with a lockable door (3), characterized in that, Also includes: The expansion compartment (4) is set as one or two symmetrically arranged about the main compartment (1). The expansion compartment (4) and the main compartment (1) are connected by a disassembly and assembly component. A balancing assembly is provided at the top of the main cabin (1), and the mounting bracket (2) is installed on the top of the main cabin (1) through the balancing assembly; The extended cabin (4) is the same model as the main cabin (1).

2. The modular and scalable UAV payload bay structure as described in claim 1, characterized in that, The assembly / disassembly assembly includes a connecting block (5), a pin (6), and a positioning shaft (7). The connecting block (5) is installed on the side wall of the main compartment (1). A pin hole is provided through the front end of the connecting block (5). The pin (6) can be slidably inserted into the pin hole. A fixing bracket (8) is provided at one end of the circumferential side wall of the pin (6). The other end of the fixing bracket (8) is connected to the side wall of the expansion compartment (4). A lower positioning block (9) is installed in the middle of the side wall of the main compartment (1) near the hatch (3). An upper positioning block (10) is installed on the top of the side wall of the expansion compartment (4) facing the main compartment (1) near the hatch (3). Both the upper positioning block (0) and the lower positioning block (9) have through holes from top to bottom. The upper positioning block (10) is located directly above the lower positioning block (9). After the expansion compartment (4) is installed on the main compartment (1), the axis of the through hole of the upper positioning block (10) coincides with the axis of the through hole of the lower positioning block (9). The fixing bracket (8) is in close contact with the connecting block (5). The positioning shaft (7) slides through the through hole of the upper positioning block (10) and continues to slide into the through hole of the lower positioning block (9). The top of the positioning shaft (7) is provided with a positioning handle (11). A locking component is provided between the positioning handle (11) and the upper positioning block (10).

3. The modular and scalable UAV payload bay structure as described in claim 1, characterized in that, The balancing assembly includes a support plate (12), with two parallel T-shaped slides (13) at the top of the support plate (12). The T-shaped slides (13) are perpendicular to the side wall of the main cabin (1) facing the extension cabin (4). The bottom of the mounting frame (2) is provided with two T-shaped slide rails (14), which are slidably engaged with the two T-shaped slides (13). Limiting components are provided at the bottom of the two opposite side walls of the mounting frame (2) perpendicular to the T-shaped slides (13).

4. The modular and scalable UAV payload bay structure as described in claim 2, characterized in that, The front end of the connecting block (5) is provided with a guide plate (15), and the top end of the guide plate (15) is provided with a semi-circular guide groove. The diameter of the semi-circular guide groove is the same as the diameter of the pin hole, and the semi-circular guide groove is aligned with the lower middle area of ​​the pin hole.

5. The modular and scalable UAV payload bay structure as described in claim 2, characterized in that, The locking assembly includes a locking threaded rod (16), which is coaxially mounted between the positioning handle (11) and the positioning shaft (7). The top of the upper positioning block (10) is provided with a locking threaded ring (17), which is provided with an internal thread and is coaxially arranged with the through hole of the upper positioning block (10). After the positioning shaft (7) passes through the through hole of the upper positioning block (10) and the through hole of the lower positioning block (9) respectively, the locking threaded rod (16) is threadedly connected to the locking threaded ring (17).

6. The modular and scalable UAV payload bay structure as described in claim 3, characterized in that, The limiting assembly includes two limiting plates (18), which are respectively installed on the bottom of the two opposite side walls of the mounting frame (2). The top of the limiting plate (18) is provided with a limiting threaded hole, and a limiting threaded rod (20) with a limiting handle (19) is threadedly connected in the limiting threaded hole. The top of the support plate (12) is provided with two limiting holes. When the mounting frame (2) is located directly above the main cabin (1), the two limiting holes are located directly below the limiting threaded holes of the two limiting plates (18), and the two limiting threaded rods (20) are respectively inserted into the two limiting holes.

7. The modular and scalable UAV payload bay structure as described in claim 3, characterized in that, Both of the T-shaped slide rails (14) are provided with L-shaped guard rods (21). The two L-shaped guard rods (21) are located on opposite sides of the support plate (12). The front end of the support plate (12) away from the front L-shaped guard rod (21) and the rear end of the support plate (12) away from the rear L-shaped guard rod (21) are provided with blocks (22). When the L-shaped guard rod (21) moves with the T-shaped slide rail (14) to the position of the block (22) on the same side, the block (22) can prevent the L-shaped guard rod (21) from continuing to move in the same direction.

8. The modular and scalable UAV payload bay structure as described in claim 4, characterized in that, The number of connecting blocks (5) of the assembly / disassembly assembly is at least two, and the number of pins (6) and guide plates (15) is adapted to the number of connecting blocks (5).

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