An unmanned aerial vehicle cargo hold with adjustable center of gravity
By designing an adjustable cargo bay for drones and using a sensor- and motor-driven gear and screw system to adjust the cargo position, the problem of flight instability caused by center of gravity deviation in drones was solved, achieving balanced and stable flight of drones.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI BEITOU LOW-ALTITUDE ECONOMIC INVESTMENT CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-29
AI Technical Summary
When a drone is carrying equipment, the influence of the cargo's center of gravity exceeds the range of the drone's adaptive control, leading to flight instability.
Design an adjustable cargo hold for drones. By detecting skew using sensors, and utilizing a longitudinal and lateral motor-driven gear and screw system, the position of the cargo within the hold can be adjusted to maintain the drone's balance.
It effectively adjusts the cargo position, maintains the balance of the drone, prevents skewing, and improves flight stability.
Smart Images
Figure CN224297469U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) cargo compartment technology, specifically an UAV cargo compartment with an adjustable cargo center of gravity. Background Technology
[0002] Unmanned aerial vehicles (UAVs) are unmanned aircraft controlled by radio remote control equipment and onboard program control devices, or operated autonomously by an onboard computer, either completely or intermittently. The combination of UAVs with industry applications represents a true necessity for drones. Their applications in fields such as aerial photography, agriculture, plant protection, miniature selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying, news reporting, power line inspection, disaster relief, film and television shooting, and creating romantic moments have greatly expanded the uses of drones.
[0003] As drones are widely used in fields such as topographic mapping, material transportation, maritime rescue, target reconnaissance and strike, their flight missions are becoming increasingly complex. The types of equipment that need to be mounted are also increasing, becoming larger and heavier. In particular, when drones are delivering goods, the various equipment mounted to complete various complex tasks has an increasingly significant impact on the drone's center of gravity, which has exceeded the range of adaptive control that drones can have.
[0004] To address this, we propose an adjustable cargo hold for unmanned aerial vehicles (UAVs). Utility Model Content
[0005] The purpose of this invention is to provide an unmanned aerial vehicle (UAV) cargo compartment with an adjustable cargo center of gravity to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable cargo hold for unmanned aerial vehicles (UAVs), comprising a cargo hold, an adjustment mechanism at the bottom of the cargo hold, a protective frame at the top of the adjustment mechanism, and a translation mechanism including a fixed plate, a longitudinal sliding plate, a transverse sliding plate, a longitudinal protrusion, a longitudinal groove, a longitudinal motor, a drive gear, a driven gear, a longitudinal lead screw, a connecting seat, a longitudinal connecting block, a transverse protrusion, a fixed seat, a transverse motor, a transverse lead screw, a transverse connecting block, and a transverse groove. The bottom of the fixed plate is fixedly installed on the top of the base. The longitudinal protrusion is integrally formed with the top of the fixed plate. The longitudinal groove is formed at the bottom of the longitudinal sliding plate and is slidably connected to the longitudinal protrusion. The connecting seat is integrally connected to two corners on the same side of the fixed plate. The two ends of the longitudinal lead screw are rotatably connected to the connecting seat. The longitudinal motor is fixedly installed at one corner of the bottom of the fixed plate. The drive gear is fixedly connected to the output end of the longitudinal motor. The driven gear is fixedly installed on the end of the longitudinal lead screw near the motor and meshes with the drive gear. The longitudinal connecting block is threadedly connected to the longitudinal lead screw.
[0007] Optionally, the longitudinal connecting block is integrally connected to one side of the longitudinal slide plate, the transverse protrusion is integrally set with the top of the longitudinal slide plate, the transverse groove is opened at the bottom of the transverse slide plate, the transverse groove is slidably connected with the transverse protrusion, the fixed seat is integrally set with two corners on the same side of the longitudinal slide plate, the transverse motor is fixedly installed with one side of the fixed seat, the two ends of the transverse lead screw are rotatably connected to the fixed seat, one end of the transverse lead screw is fixedly installed with the output end of the transverse motor, the transverse connecting block is threadedly connected to the transverse lead screw, and the transverse connecting block is integrally connected to one side of the transverse slide plate.
[0008] Optionally, the thickness of the longitudinal sliding plate is greater than the thickness of the fixed plate and the transverse sliding plate, the thickness of the transverse sliding plate is the same as that of the fixed plate, and the length and width of the fixed plate, the longitudinal sliding plate and the fixed plate are the same.
[0009] Optionally, the angle between the longitudinal protrusion and the transverse protrusion's planar projection is 90 degrees, the cross-sectional shape of the longitudinal protrusion and the transverse protrusion is a right trapezoid, and the right-angled sides of the longitudinal protrusion and the transverse protrusion are provided with grooves.
[0010] Optionally, the longitudinal connecting block is located in the middle of one side of the longitudinal slide plate, and the bottom of the longitudinal connecting block is not lower than the bottom of the connecting seat.
[0011] Optionally, the transverse connecting block is located in the middle of one side of the transverse slide, the bottom of the longitudinal connecting block is not lower than the bottom of the fixing seat, and the bottom of the fixing seat is not lower than the top of the transverse slide groove.
[0012] Optionally, the bottom of the protective frame is fixedly installed to the top of the transverse slide, and the size of the protective frame is the same as the size of the transverse slide.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. The adjustable cargo hold of this drone, after the cargo is placed inside the protective frame of the transverse sliding plate, will detect the tilt of the drone whenever the center of gravity of the cargo deviates too much from the center of gravity of the drone. The sensor will then drive the drive gear to rotate via the longitudinal motor, which in turn causes the driven gear and longitudinal screw meshing with the drive gear to rotate. The longitudinal connecting block, which is threaded to the longitudinal screw, moves along the longitudinal screw and drives the longitudinal sliding plate and the transverse sliding plate to move longitudinally relative to the fixed plate. During the movement of the longitudinal sliding plate, the longitudinal groove at the bottom of the longitudinal sliding plate moves along the longitudinal protrusion to adjust the position of the cargo in the cargo hold to maintain the balance of the drone.
[0015] 2. In this drone cargo compartment with adjustable cargo center of gravity, while the longitudinal motor rotates and moves the longitudinal slide plate, the transverse motor drives the transverse lead screw to rotate. The transverse connecting block, which is threaded to the transverse lead screw, also moves and drives the transverse slide plate to move. During the movement of the transverse slide plate, the transverse protrusion and the transverse slide groove are relatively displaced, so that the transverse slide plate remains stable during the movement. At the same time, in conjunction with the longitudinal displacement of the longitudinal slide plate, the top of the transverse slide plate is moved to a suitable position to prevent the drone from tilting. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a drone cargo compartment with an adjustable cargo center of gravity according to the present invention.
[0017] Figure 2 This is a schematic diagram of the adjustment mechanism for an unmanned aerial vehicle (UAV) cargo compartment that can adjust the center of gravity of the cargo according to the present invention.
[0018] Figure 3 This is a schematic diagram of the structure of the fixed plate of the unmanned aerial vehicle cargo compartment with adjustable cargo center of gravity according to the present invention;
[0019] Figure 4 This utility model relates to an adjustable cargo hold for unmanned aerial vehicles (UAVs). Figure 3 Enlarged view of point A in the middle;
[0020] Figure 5 This is a schematic diagram of the fixed plate and longitudinal sliding plate of the cargo compartment of an unmanned aerial vehicle (UAV) with an adjustable cargo center of gravity position according to the present invention.
[0021] Figure 6 This is a schematic diagram of the longitudinal and transverse sliding plates of a drone cargo compartment with an adjustable cargo center of gravity according to the present invention.
[0022] Figure 7 This is a schematic diagram of the longitudinal and transverse sliding plates of a drone cargo compartment with an adjustable cargo center of gravity according to the present invention.
[0023] In the diagram: 1. Cargo hold; 2. Adjustment mechanism; 21. Fixed plate; 22. Longitudinal sliding plate; 23. Lateral sliding plate; 24. Longitudinal protrusion; 25. Longitudinal groove; 26. Longitudinal motor; 27. Drive gear; 28. Driven gear; 29. Longitudinal lead screw; 210. Connecting seat; 211. Longitudinal connecting block; 212. Lateral protrusion; 213. Fixed seat; 214. Lateral motor; 215. Lateral lead screw; 216. Lateral connecting block; 217. Lateral groove; 3. Protective frame. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1 to 7 This utility model provides an adjustable cargo hold for unmanned aerial vehicles (UAVs), including a cargo hold 1. An adjustment mechanism 2 is located at the bottom of the cargo hold 1, and a protective frame 3 is located at the top of the adjustment mechanism 2. The translation mechanism includes a fixed plate 21, a longitudinal sliding plate 22, a transverse sliding plate 23, a longitudinal protrusion 24, a longitudinal groove 25, a longitudinal motor 26, a driving gear 27, a driven gear 28, a longitudinal lead screw 29, a connecting seat 210, a longitudinal connecting block 211, a transverse protrusion 212, a fixed seat 213, and a transverse motor. 214, 215, 216, and 217 are a transverse lead screw, a transverse connecting block, and a transverse slide groove. The bottom of the fixing plate 21 and the top of the base are fixedly installed. The longitudinal protrusion 24 is integrally formed with the top of the fixing plate 21. The longitudinal slide groove 25 is formed at the bottom of the longitudinal slide plate 22 and is slidably connected to the longitudinal protrusion 24. The connecting seat 210 is integrally connected to the two corners on the same side of the fixing plate 21. The two ends of the longitudinal lead screw 29 are rotatably connected to the connecting seat 210. The longitudinal motor 26 is fixedly installed at the bottom of the fixing plate 21. In one corner, the drive gear 27 is fixedly connected to the output end of the longitudinal motor 26, and the driven gear 28 is fixedly installed to the end of the longitudinal screw 29 near the motor. The driven gear 28 meshes with the drive gear 27, and the longitudinal connecting block 211 is threadedly connected to the longitudinal screw 29. After the cargo is placed inside the protective frame 3 of the transverse slide plate 23, whenever the center of gravity of the cargo deviates too much from the center of gravity of the drone, causing the drone to tilt, the sensor detects the tilt and drives the drive gear 27 to rotate through the longitudinal motor 26. This causes the driven gear 28 meshing with the drive gear 27 and the longitudinal screw 29 to rotate. The longitudinal connecting block 211, which is threadedly connected to the longitudinal screw 29, moves along the longitudinal screw 29 and drives the longitudinal slide plate 22 and the transverse slide plate 23 to move longitudinally relative to the fixed plate 21. During the movement of the longitudinal slide plate 22, the longitudinal groove 25 at the bottom of the longitudinal slide plate 22 moves along the longitudinal protrusion 24 to adjust the position of the cargo in the cargo compartment 1 to maintain the balance of the drone.
[0026] The longitudinal connecting block 211 is integrally connected to one side of the longitudinal sliding plate 22. The transverse protrusion 212 is integrally set with the top of the longitudinal sliding plate 22. The transverse groove 217 is formed at the bottom of the transverse sliding plate 23 and is slidably connected to the transverse protrusion 212. The fixed base 213 is integrally set with the two corners on the same side of the longitudinal sliding plate 22. The transverse motor 214 is fixedly installed on one side of the fixed base 213. The two ends of the transverse lead screw 215 are rotatably connected to the fixed base 213. One end of the transverse lead screw 215 is fixedly installed to the output end of the transverse motor 214. The transverse connecting block 216 is threadedly connected to the transverse lead screw 215. Block 216 is integrally connected to one side of the horizontal slide plate 23. While the vertical motor 26 rotates and moves the vertical slide plate 22, the horizontal motor 214 drives the horizontal lead screw 215 to rotate. The horizontal connecting block 216, which is threaded to the horizontal lead screw 215, also moves and drives the horizontal slide plate 23 to move. During the movement of the horizontal slide plate 23, the horizontal protrusion 212 and the horizontal slide groove 217 are relatively displaced, so that the horizontal slide plate 23 remains stable during the movement. At the same time, in conjunction with the vertical displacement of the vertical slide plate 22, the top of the horizontal slide plate 23 is moved to a suitable position to prevent the drone from tilting.
[0027] The thickness of the longitudinal slide plate 22 is greater than the thickness of the fixed plate 21 and the transverse slide plate 23. The thickness of the transverse slide plate 23 is the same as that of the fixed plate 21. The length and width of the fixed plate 21, the longitudinal slide plate 22 and the fixed plate 21 are the same.
[0028] The angle between the longitudinal protrusion 24 and the transverse protrusion 212 is 90 degrees. The cross-sectional shape of the longitudinal protrusion 24 and the transverse protrusion 212 is a right trapezoid. The right-angled sides of the longitudinal protrusion 24 and the transverse protrusion 212 are provided with grooves.
[0029] The longitudinal connecting block 211 is located in the middle of one side of the longitudinal slide plate 22, and the bottom of the longitudinal connecting block 211 is not lower than the bottom of the connecting seat 210.
[0030] The transverse connecting block 216 is located in the middle of one side of the transverse slide plate 23, and the bottom of the longitudinal connecting block 211 is not lower than the bottom of the fixing seat 213, and the bottom of the fixing seat 213 is not lower than the top of the transverse slide groove 217.
[0031] The bottom of the protective frame 3 is fixedly installed to the top of the horizontal sliding plate 23, and the size of the protective frame 3 is the same as that of the horizontal sliding plate 23.
[0032] Working principle:
[0033] After the cargo is placed inside the protective frame 3 of the transverse sliding plate 23, whenever the center of gravity of the cargo deviates too much from the center of gravity of the drone, causing the drone to tilt, the sensor detects the tilt and drives the drive gear 27 to rotate via the longitudinal motor 26. This causes the driven gear 28, which meshes with the drive gear 27, and the longitudinal screw 29 to rotate. The longitudinal connecting block 211, which is threaded to the longitudinal screw 29, moves along the longitudinal screw 29. Through the longitudinal connecting block 211, the longitudinal sliding plate 22 and the transverse sliding plate 23 move longitudinally relative to the fixed plate 21. During the movement of the longitudinal sliding plate 22, the longitudinal groove 25 at the bottom of the longitudinal sliding plate 22 moves along the longitudinal protrusion 24. The drone is moved to adjust the position of the cargo in the cargo hold 1 to maintain its balance. While the longitudinal motor 26 rotates and moves the longitudinal slide plate 22, the transverse motor 214 drives the transverse lead screw 215 to rotate. The transverse connecting block 216, which is threaded to the transverse lead screw 215, also moves and drives the transverse slide plate 23 to move. During the movement of the transverse slide plate 23, the transverse protrusion 212 and the transverse slide groove 217 are relatively displaced, so that the transverse slide plate 23 remains stable during the movement. At the same time, in conjunction with the longitudinal displacement of the longitudinal slide plate 22, the top of the transverse slide plate 23 is moved to a suitable position to prevent the drone from tilting.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A UAV cargo hold with adjustable cargo center of gravity, comprising a cargo hold (1), characterized in that, An adjustment mechanism (2) is provided at the bottom of the cargo compartment (1), and a protective frame (3) is provided at the top of the adjustment mechanism (2). The translation mechanism includes a fixed plate (21), a longitudinal sliding plate (22), a transverse sliding plate (23), a longitudinal protrusion (24), a longitudinal groove (25), a longitudinal motor (26), a driving gear (27), a driven gear (28), a longitudinal lead screw (29), a connecting seat (210), a longitudinal connecting block (211), a transverse protrusion (212), a fixed seat (213), a transverse motor (214), a transverse lead screw (215), a transverse connecting block (216), and a transverse groove (217). The bottom of the fixed plate (21) is fixedly installed to the top of the base. The longitudinal protrusion (24) and the fixed plate (212) are fixed together. 1) The top is integrally set, the longitudinal slide groove (25) is opened at the bottom of the longitudinal slide plate (22), the longitudinal slide groove (25) is slidably connected to the longitudinal protrusion (24), the connecting seat (210) is integrally connected to the two corners on the same side of the fixed plate (21), the two ends of the longitudinal screw (29) are rotatably connected to the connecting seat (210), the longitudinal motor (26) is fixedly installed at one corner of the bottom of the fixed plate (21), the driving gear (27) is fixedly connected to the output end of the longitudinal motor (26), the driven gear (28) is fixedly installed to the end of the longitudinal screw (29) near the motor, the driven gear (28) meshes with the driving gear (27), and the longitudinal connecting block (211) is threadedly connected to the longitudinal screw (29).
2. The unmanned aerial vehicle (UAV) cargo hold with adjustable cargo center of gravity according to claim 1, characterized in that, The longitudinal connecting block (211) is integrally connected to one side of the longitudinal slide plate (22), the transverse protrusion (212) is integrally set to the top of the longitudinal slide plate (22), the transverse groove (217) is opened at the bottom of the transverse slide plate (23), the transverse groove (217) is slidably connected to the transverse protrusion (212), the fixed seat (213) is integrally set to the two corners on the same side of the longitudinal slide plate (22), the transverse motor (214) is fixedly installed to one side of the fixed seat (213), the two ends of the transverse screw (215) are rotatably connected to the fixed seat (213), one end of the transverse screw (215) is fixedly installed to the output end of the transverse motor (214), the transverse connecting block (216) is threadedly connected to the transverse screw (215), and the transverse connecting block (216) is integrally connected to one side of the transverse slide plate (23).
3. The unmanned aerial vehicle (UAV) cargo hold with adjustable cargo center of gravity according to claim 2, characterized in that, The thickness of the longitudinal sliding plate (22) is greater than the thickness of the fixed plate (21) and the transverse sliding plate (23). The thickness of the transverse sliding plate (23) is the same as that of the fixed plate (21). The length and width of the fixed plate (21), the longitudinal sliding plate (22) and the fixed plate (21) are the same.
4. The unmanned aerial vehicle (UAV) cargo hold with adjustable cargo center of gravity according to claim 2, characterized in that, The angle between the longitudinal protrusion (24) and the transverse protrusion (212) is 90 degrees. The cross-sectional shape of the longitudinal protrusion (24) and the transverse protrusion (212) is a right trapezoid. The right-angled sides of the longitudinal protrusion (24) and the transverse protrusion (212) are provided with grooves.
5. The unmanned aerial vehicle (UAV) cargo hold with adjustable cargo center of gravity according to claim 2, characterized in that, The longitudinal connecting block (211) is located in the middle of one side of the longitudinal sliding plate (22), and the bottom of the longitudinal connecting block (211) is not lower than the bottom of the connecting seat (210).
6. The unmanned aerial vehicle (UAV) cargo hold with adjustable cargo center of gravity according to claim 2, characterized in that, The transverse connecting block (216) is located in the middle of one side of the transverse sliding plate (23), and the bottom of the longitudinal connecting block (211) is not lower than the bottom of the fixed seat (213), and the bottom of the fixed seat (213) is not lower than the top of the transverse sliding groove (217).
7. The unmanned aerial vehicle (UAV) cargo hold with adjustable cargo center of gravity according to claim 1, characterized in that, The bottom of the protective frame (3) is fixedly installed on the top of the horizontal sliding plate (23), and the size of the protective frame (3) is the same as the size of the horizontal sliding plate (23).