Warehouse locking device and logistics unmanned aerial vehicle applying same

Abstract

The utility model relates to the technical field of logistics freight unmanned aerial vehicles, and discloses a warehouse locking device and a logistics unmanned aerial vehicle applying the locking device.The warehouse locking device comprises a container and a rapid loading and unloading module, the rapid loading and unloading module comprises a circular iron column, a coil, a metal conical shell, a spring, a three-hole metal cup, a steel ball and an ejector pin, and the coil is wound around the outer portion of the circular iron column; the lower end of the round iron column is connected with the metal conical shell, the three-hole metal cup is placed in the metal conical shell, three evenly-distributed round through holes are formed in the periphery of the lower layer of the three-hole metal cup, one steel ball is placed in each round through hole, the spring is arranged on the inner wall of the upper layer of the three-hole metal cup, and the ejector pin is arranged in the metal conical shell. The bottom end of the ejector pin is fixed on the container, and the ejector pin is further provided with a groove for placing the steel ball. The warehouse locking device for the logistics unmanned aerial vehicle has self-adaptability, the locking degree is improved along with the increase of the weight of the cargo hold, the transportation safety is ensured, and the reliability and stability in the loading and unloading process are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics and freight drones, and particularly to a cargo hold locking device and a logistics drone applying the locking device. Background Art

[0002] There are several main forms of the fixing method of the cargo hold of logistics drones in the current industry. For example, for the integrated cargo hold logistics drones of DJI and Xunyi, the cargo hold is usually fixed under the fuselage, and the side-opening design is used to pick up and place goods, with low automation. Moreover, the integrated cargo hold logistics drones cannot be automatically docked with the intelligent nest, and it is necessary to manually transfer the goods in the drone cargo hold to the intelligent nest. There is also the common hook-type logistics transportation method. This method may reduce the stability of the drone during flight and pose a safety hazard. Therefore, it is suitable for cargo delivery in sparsely populated areas. In addition, for the grasping-type cargo hold used by Meituan drones, as the weight of the goods increases, the situation of the goods falling off may occur.

[0003] In the prior art, although there are various solutions to realize the automatic loading and unloading of the drone cargo box, they still have some significant defects. First of all, the existing automatic loading and unloading devices often increase the take-off weight of the multi-rotor drone, which directly affects the cargo-carrying capacity of the drone and limits its application scope in the field of logistics distribution. Secondly, these devices have high energy consumption during operation, increasing the burden on the drone battery, shortening the flight radius of the drone, and reducing its transportation efficiency. Finally, the existing loading and unloading devices do not fix the cargo box firmly enough, increasing the safety hazard during flight and possibly threatening the integrity of the drone and the goods. Summary of the Invention

[0004] The purpose of the present invention is to provide a cargo hold locking device and a logistics drone applying the locking device to solve the defects mentioned in the above background art.

[0005] To achieve the above purpose, a cargo hold locking device and a logistics drone applying the locking device are provided.

[0006] In a first aspect, the present invention provides 1. A cargo hold locking device, comprising: a cargo box and a quick loading and unloading module. The quick loading and unloading module includes: a circular iron column, a coil, a metal conical shell, a spring, a three-hole metal cup, steel balls, and a thimble. The coil is wound around the outside of the circular iron column. The lower end of the circular iron column is provided with the metal conical shell. The metal conical shell is a hollow structure and has a first through hole opened at the lower end. The three-hole metal cup is placed inside the metal conical shell. The three-hole metal cup is divided into upper and lower two-layer structures by an intermediate partition layer. Both the upper and lower layers of the three-hole metal cup are hollow structures. Three evenly distributed circular through holes are provided around the lower layer of the three-hole metal cup. A steel ball is placed in each of the circular through holes. A spring is provided on the inner wall of the upper layer of the three-hole metal cup. The top end of the spring contacts the lower end of the circular iron column, and the lower end of the spring contacts the intermediate partition layer of the three-hole metal cup. A second through hole is opened at the bottom end of the three-hole metal cup, and a third through hole is opened on the intermediate partition layer of the three-hole metal cup. The top end of the thimble sequentially passes through the first through hole, the second through hole, and the third through hole and is arranged inside the metal conical shell. The bottom end of the thimble is fixed on the cargo box. A groove for placing the steel ball is also provided on the thimble.

[0007] Further, a ranging module is fixedly installed at the center of the lower end of the circular iron column, and the ranging module is coaxial with the center point of the first through hole.

[0008] Further, the thimble is fixed on the cargo box through a thimble end cap.

[0009] Further, the coil is connected to an external control module for supplying power to the coil.

[0010] In the second aspect of the present invention, there is provided a logistics unmanned aerial vehicle (UAV) adopting the cargo hold locking device, comprising: a UAV body, a cargo box, and a quick loading and unloading module. Four of the quick loading and unloading modules are fixedly installed on the lower side of the UAV body, which are used to load the cargo box in the intelligent nest onto the UAV body and unload the cargo box on the UAV body onto the intelligent nest. The UAV body shuttles between different intelligent nests to complete the transportation of the cargo box. The quick loading and unloading module includes: a circular iron column, a coil, a metal conical shell, a spring, a three-hole metal cup, steel balls, and a thimble. The coil is wound around the outside of the circular iron column. The upper end of the circular iron column is fixedly connected to the UAV body. The lower end of the circular iron column is provided with the metal conical shell. The metal conical shell is fixedly connected to the lower carbon plate of the UAV body fuselage through screws. The metal conical shell is a hollow structure and has a first through hole opened at the lower end. The three-hole metal cup is placed inside the metal conical shell. The three-hole metal cup is divided into upper and lower two-layer structures by an intermediate partition layer. Both the upper and lower layers of the three-hole metal cup are hollow structures. Three evenly distributed circular through holes are provided around the lower layer of the three-hole metal cup. A steel ball is placed in each of the circular through holes. A spring is provided on the inner wall of the upper layer of the three-hole metal cup. The top end of the spring contacts the lower end of the circular iron column, and the lower end of the spring contacts the intermediate partition layer of the three-hole metal cup. A second through hole is opened at the bottom end of the three-hole metal cup, and a third through hole is opened on the intermediate partition layer of the three-hole metal cup. The top end of the thimble sequentially passes through the first through hole, the second through hole, and the third through hole and is arranged inside the metal conical shell. The bottom end of the thimble is fixed to the cargo box, and a groove for placing the steel ball is further provided on the thimble.

[0011] Further, a ranging module is fixedly installed at the center of the lower end of the circular iron column, and the ranging module is coaxial with the center point of the first through hole.

[0012] Further, the thimble is fixed to the cargo box through a thimble end cap.

[0013] Further, the coil is connected to an external control module for supplying power to the coil.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The automatic loading and unloading of goods are realized through the quick loading and unloading module, solving the problem that traditional logistics UAVs need manual assistance for loading and unloading cargo boxes, and significantly improving the automation degree and efficiency of operations;

[0016] 2. By simplifying the structure and reducing the number of required components, the overall weight of the UAV is reduced. This design not only simplifies the manufacturing and assembly processes, but also effectively improves the payload capacity of the UAV, enabling it to carry more goods for distribution;

[0017] 3. Low energy consumption operation: The device of the present invention only needs to be powered during unloading, and the power supply time is short. Such a design significantly reduces energy consumption, increases the endurance time of the drone, and expands the flight radius;

[0018] 4. High safety locking mechanism: The device of the present invention has a high locking degree for the cargo box, and the locking force can increase with the increase of the weight of the cargo box. This improvement improves the fixing stability of the cargo box during flight, enhances the flight safety, improves the reliability and stability of the entire loading and unloading process, and solves the problem that the existing automatic loading and unloading device cannot firmly fix the cargo box. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the quick loading and unloading module of the present invention;

[0020] Figure 2 It is a cross-sectional view of the quick loading and unloading module of the present invention;

[0021] Figure 3 It is a schematic diagram of the structural logistics drone of the present invention;

[0022] Figure 4 It is a schematic diagram of the cargo hold structure of the present invention.

[0023] Reference numerals in the figure: 1, drone body; 2, cargo box; 3, quick loading and unloading module; 4, circular iron column; 5, coil; 6, metal conical shell; 7, first through hole; 8, three-hole metal cup; 9, intermediate layer; 10, circular through hole; 11, steel ball; 12, spring; 13, second through hole; 14, third through hole; 15, ejector pin; 16, groove; 17, ranging module; 18, ejector pin end cap. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1 - Figure 2 , the present invention provides a cargo hold locking device, including: a cargo box 2 and a quick loading and unloading module 3.

[0026] The quick loading and unloading module 3 includes: a circular iron column 4, a coil 5, a metal conical shell 6, a spring 12, a three-hole metal cup 8, a steel ball 11 and an ejector pin 15. The outside of the circular iron column 4 is wound with a coil 5, and the coil 5 is connected to an external control module for supplying power to the coil 5.

[0027] A ranging module 17 is fixedly installed at the center of the lower end of the circular iron column 4, and the ranging module 17 is coaxial with the center point of the first through hole 7.

[0028] The lower end of the circular iron column 4 is connected to a metal conical shell 6. The metal conical shell 6 is a hollow structure and has a first through hole 7 at its lower end. A three-hole metal cup 8 is placed inside the metal conical shell 6. The three-hole metal cup 8 is divided into upper and lower layers by an intermediate partition 9, and both the upper and lower layers of the three-hole metal cup 8 are hollow structures.

[0029] Three circular through holes 10 are evenly distributed around the lower layer of the three-hole metal cup 8, and a steel ball 11 is placed in each circular through hole 10.

[0030] A spring 12 is provided on the inner wall of the upper layer of the three-hole metal cup 8. The top end of the spring 12 contacts the lower end of the circular iron column 4, and the lower end of the spring 12 contacts the intermediate partition 9 of the three-hole metal cup 8.

[0031] A second through hole 13 is provided at the bottom end of the three-hole metal cup 8, and a third through hole 14 is provided on the intermediate partition 9 of the three-hole metal cup 8. The top end of the thimble 15 passes through the first through hole 7, the second through hole 13, and the third through hole 14 in sequence and is arranged inside the metal conical shell 6. The bottom end of the thimble 15, the thimble end cap 18, is fixed to the cargo box 2. A groove 16 for placing the steel ball 11 is also provided on the thimble 15.

[0032] Please refer to Figure 3 - Figure 4 , the present invention provides a cargo hold locking device and a logistics drone applying the locking device, including: a drone body 1, a cargo box 2, and a quick loading and unloading module 3. Four quick loading and unloading modules 3 are fixedly installed on the lower side of the drone body 1, which are used to load the cargo box 2 in the intelligent nest onto the drone body 1 and unload the cargo box 2 on the drone body 1 onto the intelligent nest. The intelligent nest is used to store the cargo box 2 and the drone body 1. The drone body 1 shuttles between different intelligent nests to complete the transportation of the cargo box 2.

[0033] The quick loading and unloading module 3 includes: a circular iron column 4, a coil 5, a metal conical shell 6, a spring 12, a three-hole metal cup 8, a steel ball 11, and a thimble 15.

[0034] The coil 5 is wound around the outside of the circular iron column 4. The coil 5 is connected to an external control module for supplying power to the coil 5.

[0035] The upper end of the circular iron column 4 is fixedly connected to the lower carbon plate of the fuselage of the drone body 1.

[0036] The lower end of the circular iron column 4 is connected to the metal conical shell 6, and the metal conical shell 6 is fixedly connected to the drone body 1 by screws.

[0037] The metal conical shell 6 is a hollow structure and has a first through hole 7 at its lower end.

[0038] Inside the metal conical shell 6, a three-hole metal cup 8 is placed. The three-hole metal cup 8 is divided into upper and lower two-layer structures by an intermediate partition 9, and both the upper and lower layers of the three-hole metal cup 8 are hollow structures.

[0039] Around the lower layer of the three-hole metal cup 8, three evenly distributed circular through holes 10 are provided, and a steel ball 11 is placed in each circular through hole 10 respectively.

[0040] On the inner wall of the upper layer of the three-hole metal cup 8, a spring 12 is provided. The top end of the spring 12 contacts the lower end of the circular iron column 4, and the lower end of the spring 12 contacts the intermediate partition 9 of the three-hole metal cup 8.

[0041] At the bottom end of the three-hole metal cup 8, a second through hole 13 is opened, and on the intermediate partition 9 of the three-hole metal cup 8, a third through hole 14 is opened.

[0042] The top end of the thimble 15 passes through the first through hole 7, the second through hole 13, and the third through hole 14 in sequence and is arranged inside the metal conical shell 6. The bottom end of the thimble 15 is fixed to the cargo box 2 through a thimble end cap 18.

[0043] On the thimble 15, there is also a groove 16 for placing the steel ball 11.

[0044] At the center of the lower end of the circular iron column 4, a ranging module 17 is fixedly installed, and the ranging module 17 is coaxial with the center point of the first through hole 7.

[0045] When carrying goods, the UAV body 1 flies to the position where the cargo box 2 is located and starts positioning, aligning the axes of the four ejector pins 15 with the axis of the first through hole 7 of the metal conical shell 6, allowing a deviation of 3-5 mm. After completing the positioning, the UAV body 1 descends, causing the ejector pins 15 to pass through the first through hole 7, the second through hole 13, and the third through hole 14 in sequence. During the descent of the UAV body 1, the ejector pins 15 cause the gap between the three steel balls 11 to continuously increase and then remain unchanged. When the steel balls 11 come into contact with the grooves 16 of the ejector pins 15, the gap between the steel balls 11 becomes smaller again. During the process of the gap between the three steel balls 11 increasing, the steel balls 11 are subjected to the extrusion force from the ejector pins 15, causing the steel balls 11 to move upward along the inner inclined surface of the metal conical shell 6 and compress the spring 12. When the steel balls 11 are in full contact with the grooves 16 on the side walls of the ejector pins 15, the loading task of the cargo box 2 is completed, and the UAV body 1 starts to move upward. During the upward movement of the UAV body 1, the spring 12 rebounds, applying a vertically downward pressure to the steel balls 11 through the three-hole metal cup 8. The ejector pins 15 are subjected to the downward pulling force of the cargo box 2 and apply an obliquely downward force to the steel balls 11 through the grooves 16. The metal conical shell 6 restricts the outward movement of the steel balls 11, causing the three steel balls 11 to lock the ejector pins 15, locking the cargo box 2 to the UAV body 1, and the locking degree will increase as the weight of the cargo box 2 increases. When the UAV body 1 flies to the destination, the control module supplies power to the coil 5, making the circular iron column 4 magnetic, which will attract the three-hole metal cup 8 to move upward and compress the spring 12, resulting in the gap between the three steel balls 11 being larger than the diameter of the ejector pins 15. When the ranging module 17 measures the distance from it to the top of the ejector pins 15 as 16 mm, the ejector pins 15 are separated from the steel balls 11, and at this time, the UAV body 1 takes off and moves upward to complete the unloading task of the goods.

[0046] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cargo lock device, comprising: A cargo box (2) and a quick loading and unloading module (3), characterized in that the quick loading and unloading module (3) comprises: a circular iron column (4), a coil (5), a metal conical shell (6), a spring (12), a three-hole metal cup (8), a steel ball (11) and a thimble (15), the coil (5) being wound around the outside of the circular iron column (4), the metal conical shell (6) being arranged at the lower end of the circular iron column (4), the metal conical shell (6) being a hollow structure and having a first through hole (7) at the lower end, the three-hole metal cup (8) being arranged inside the metal conical shell (6), the three-hole metal cup (8) being divided into an upper and lower layer structure by an intermediate partition layer (9), the upper and lower layers of the three-hole metal cup (8) being both hollow structures, the lower layer of the three-hole metal cup (8) being arranged with three evenly distributed circular through holes (10) around each A steel ball (11) is placed in each of the circular through holes (10); a spring (12) is provided on the inner wall of the upper layer of the three-hole metal cup (8); the top end of the spring (12) contacts the lower end of the circular iron column (4); the lower end of the spring (12) contacts the middle partition (9) of the three-hole metal cup (8); a second through hole (13) is provided at the bottom end of the three-hole metal cup (8); a third through hole (14) is provided on the middle partition (9) of the three-hole metal cup (8); the top end of the ejector pin (15) passes through the first through hole (7), the second through hole (13) and the third through hole (14) in sequence and is arranged inside the metal conical shell (6); the bottom end of the ejector pin (15) is fixed on the cargo box (2); and a groove (16) for placing the steel ball (11) is also provided on the ejector pin (15).

2. A cargo hold locking device according to claim 1, characterized in that: A distance measuring module (17) is fixedly mounted at the center of the lower end of the circular iron column (4), and the distance measuring module (17) is coaxial with the center point of the first through hole (7).

3. A cargo hold locking device according to claim 1, characterized in that: The ejector pin (15) is fixed to the cargo box (2) via an ejector pin end cover (18).

4. A cargo hold locking device according to claim 1, characterized in that: The coil (5) is connected to an external control module for supplying power to the coil (5).

5. A logistics drone using the cargo hold locking device according to claim 1, comprising: A drone body (1), a cargo box (2) and a quick loading and unloading module (3), wherein four quick loading and unloading modules (3) are fixedly installed on the lower side of the drone body (1) and are used to load the cargo box (2) in the intelligent machine nest onto the drone body (1) and unload the cargo box (2) on the drone body (1) onto the intelligent machine nest. The drone body (1) travels back and forth between different intelligent machine nests to complete the transportation of the cargo box (2). The quick loading and unloading module (3) comprises: a round iron column (4), a coil (5), a metal conical shell (6), The invention relates to a circular iron column (4) having a plurality of members, each of which is provided with a spring (12), a three-hole metal cup (8), a steel ball (11) and a thimble (15); the coil (5) is wound around the outside of the circular iron column (4); the upper end of the circular iron column (4) is fixedly connected to the drone body (1); the lower end of the circular iron column (4) is provided with the metal conical shell (6); the metal conical shell (6) is fixedly connected to the lower carbon plate of the fuselage of the drone body (1) by screws; the metal conical shell (6) is a hollow structure and has a first through hole (7) at the lower end; the metal conical shell (6) is provided with the The three-hole metal cup (8) is divided into an upper and lower layer structure by a middle partition layer (9), the upper and lower layers of the three-hole metal cup (8) are both hollow structures, three evenly distributed circular through holes (10) are arranged around the lower layer of the three-hole metal cup (8), a steel ball (11) is placed in each of the circular through holes (10), a spring (12) is arranged on the inner wall of the upper layer of the three-hole metal cup (8), the top end of the spring (12) is in contact with the lower end of the circular iron column (4), and the lower end of the spring (12) is in contact with the three-hole The three-hole metal cup (8) is in contact with the middle partition layer (9) of the metal cup (8), the bottom end of the three-hole metal cup (8) is provided with a second through hole (13), the middle partition layer (9) of the three-hole metal cup (8) is provided with a third through hole (14), the top end of the ejector pin (15) passes through the first through hole (7), the second through hole (13) and the third through hole (14) in sequence and is arranged inside the metal conical shell (6), the bottom end of the ejector pin (15) is fixed on the cargo box (2), and the ejector pin (15) is also provided with a groove (16) for placing the steel ball (11).

6. The logistics drone according to claim 5, characterized in that: A distance measuring module (17) is fixedly mounted at the center of the lower end of the circular iron column (4), and the distance measuring module (17) is coaxial with the center point of the first through hole (7).

7. The logistics drone according to claim 5, characterized in that: The ejector pin (15) is fixed to the cargo box (2) via an ejector pin end cover (18).

8. The logistics drone according to claim 5, characterized in that: The coil (5) is connected to an external control module for supplying power to the coil (5).

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