Cargo receiving facilities

Abstract

To provide a cargo receiving facility capable of efficiently and favorably receiving cargo from an unmanned aircraft with vertical takeoff and landing performance.SOLUTION: A cargo receiving facility that receives cargo dropped from an unmanned aircraft in flight, includes: a net suspended between a plurality of support members: and a conveyance mechanism for conveying the cargo received by the net. The net has elasticity corresponding to the mass of the cargo, and has a plurality of gaps having sizes corresponding to a downwash pressure of the unmanned aircraft.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to cargo receiving facilities. [Background technology]

[0002] Recently, there has been progress in the development of cargo delivery technology using unmanned aerial vehicles (UAVs) with vertical takeoff and landing capabilities. In cargo transportation using UAVs, a flight route from the departure point to the port where the cargo will be delivered is created in advance, and the UAV is flown along that flight route.

[0003] Patent Document 1 discloses a delivery technology in which cargo is loaded onto an unmanned aerial vehicle, which lands at a cargo port set up in a facility such as an apartment complex or office building and delivers the cargo, or the cargo is detached from the sky and dropped. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6778847 Summary of the Invention [Problem to be solved by the invention]

[0005] However, as described in Patent Document 1 above, when an unmanned aerial vehicle takes off and lands at a cargo port to deliver cargo, there are problems such as the need for energy for takeoff and landing, and the time required for takeoff and landing, which reduces the efficiency of cargo receiving operations.

[0006] Furthermore, when cargo that has separated from an unmanned aerial vehicle and fallen is received at a cargo port as described in Patent Document 1, there is a risk that the cargo may be damaged by the impact of the fall. Furthermore, unmanned aerial vehicles with vertical takeoff and landing capabilities are generally equipped with rotors, and when the unmanned aerial vehicle is hovering in the air, a wind flow (hereinafter also referred to as downwash) generated by the rotors is formed below the unmanned aerial vehicle. Therefore, when cargo that has separated from an unmanned aerial vehicle and fallen is received at a cargo port as described in Patent Document 1, the cargo may not be received properly due to the influence of the downwash.

[0007] Therefore, an object of the present invention is to provide a cargo receiving facility that can efficiently and effectively receive cargo from an unmanned aerial vehicle with vertical takeoff and landing capabilities. [Means for solving the problem]

[0008] In order to solve the above problem, a cargo receiving facility according to one embodiment of the present invention comprises: A cargo receiving facility that receives cargo dropped from an unmanned aerial vehicle in flight, a net suspended between a plurality of support members; a conveying mechanism that conveys the cargo received by the net; Equipped with The net is Shin It has shrinkage and Complex There are several gaps, The transport mechanism includes: A height difference imparting mechanism that imparts a height difference to the net, The height difference providing mechanism tilts at least a portion of the net downward toward a take-out position at one side end of the net, and the tilted net slides the received cargo to the take-out position. 。 [Effects of the Invention]

[0009] According to the present invention, it is possible to provide cargo receiving equipment that can efficiently and effectively receive cargo from an unmanned aerial vehicle with vertical takeoff and landing capabilities. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic perspective view of a cargo conveying system according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a partially enlarged view of the net according to the embodiment. [Figure 3] FIG. 3 is a schematic perspective view of the cargo receiving facility according to the embodiment. [Figure 4] FIG. 4 is a schematic perspective view of a cargo receiving facility according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Specific dimensions, materials, numerical values, etc. shown in the embodiments are merely examples for facilitating understanding of the invention and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are designated by the same reference numerals to avoid redundant explanation, and elements not directly related to the present invention are not shown.

[0012] [1. Overall configuration of cargo transport system] First, the overall configuration of a cargo conveying system 100 according to a first embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a schematic perspective view of the cargo conveying system 100 according to the first embodiment of the present invention.

[0013] As shown in FIG. 1, cargo transportation system 100 includes unmanned aerial vehicle 200, a takeoff and landing site (not shown) for unmanned aerial vehicle 200 that is the delivery source of cargo 400, and cargo receiving facility 300 that is the delivery destination of cargo 400. Unmanned aerial vehicle 200 has a total length of, for example, 3 m to 5 m. Unmanned aerial vehicle 200 is loaded with cargo 400 at a takeoff and landing site (not shown). Cargo 400 may be suspended from unmanned aerial vehicle 200, may be detachably attached to the lower side of unmanned aerial vehicle 200, or may be housed inside unmanned aerial vehicle 200. Unmanned aerial vehicle 200 flies while carrying cargo 400 along a flight route from the takeoff and landing site to cargo receiving facility 300.

[0014] 1 includes, for example, four rotors 210 and a holding mechanism 220. The rotation of the four rotors 210 provides the lift and thrust required for the unmanned aerial vehicle 200. The unmanned aerial vehicle 200 of this embodiment is a vertical take-off and landing (VTOL) aircraft that can take off and land vertically. The unmanned aerial vehicle 200 may also be a so-called drone.

[0015] A holding mechanism 220 is provided on the bottom of the unmanned aerial vehicle 200. The holding mechanism 220 removably holds the cargo 400. The cargo 400 is attached to the holding mechanism 220 at a takeoff and landing site (not shown) for the unmanned aerial vehicle 200. The holding mechanism 220 continues to hold the cargo 400 while the unmanned aerial vehicle 200 moves from the takeoff and landing site to the cargo receiving facility 300. Meanwhile, when the unmanned aerial vehicle 200 reaches the cargo receiving facility 300 and is hovering in the air above the cargo receiving facility 300, the holding mechanism 220 detaches the cargo 400 and drops it toward the cargo receiving facility 300.

[0016] [2. Cargo Receiving Facility Configuration] The cargo receiving facility 300 is a facility for receiving the cargo 400 transported by the unmanned aerial vehicle 200. The cargo receiving facility 300 of this embodiment is installed, for example, on the rooftop of a building to which the cargo 400 is to be delivered. Specifically, the building may be, for example, a commercial facility such as a logistics center, supermarket, or department store, an industrial facility such as a factory or warehouse, or a public facility such as a school or government building.

[0017] The cargo receiving facility 300 includes a plurality of support members, a net 310, and a transport mechanism 320. The support members are posts that support the net 310. For example, the support members according to this embodiment are composed of a first slide rail 322a, a second slide rail 322b, a third slide rail 322c, and a fourth slide rail 322d (hereinafter, sometimes collectively referred to as slide rails 322) shown in FIG. 1. The net 310 is suspended between the plurality of support members and is arranged to extend in a generally horizontal direction. The transport mechanism 320 transports the cargo 400 received by the net 310.

[0018] Net 310 is a member formed by combining linear members such as flexible threads and fibers in a mesh pattern. Net 310 is made of, for example, a stretchable material. Net 310 has a strength sufficient to catch cargo 400 that falls from unmanned aerial vehicle 200. Net 310 has stretchability and strength according to the mass of cargo 400.

[0019] FIG. 2 is a partially enlarged view of a net 310 according to a first embodiment of the present invention. FIG. 2 is a partially enlarged view of the portion of the net 310 enclosed by the dashed line in FIG. 1. As shown in FIG. 2, the net 310 includes linear members 310a and gaps 310b. The linear members 310a are made of flexible thread, steel wire, or the like. The net 310 is a lattice structure having a shape in which the linear members 310a are tied together in a lattice pattern.

[0020] In this embodiment, the linear members 310a are made of a stretchable material such as rubber, but are not limited to this, and the linear members 310a may be made stretchable by the way the net 310 is woven.

[0021] The linear member 310a has a spring constant according to the mass and drop height of the cargo 400. For example, the spring constant of the linear member 310a is in the range of 10 N / M to 300 N / M. Specifically, when the mass of the cargo 400 is 30 kg and the drop height is 4 m, the spring constant of the linear member 310a is 73.5 N / M, and when the mass of the cargo 400 is 40 kg and the drop height is 6 m, the spring constant of the linear member 310a is 147 N / M. In this way, the expansion rate of the linear member 310a is set to increase as the mass of the cargo 400 increases and as the drop height increases. The spring constant and strength of the linear member 310a are adjusted according to the type and mass of the anticipated cargo 400.

[0022] Furthermore, in the net 310, a plurality of gaps 310b are formed between the plurality of linear members 310a. The gaps 310b have sizes corresponding to the wind pressure load due to the downwash of the unmanned aerial vehicle 200, i.e., the body mass of the unmanned aerial vehicle 200, and the mass of the cargo 400. Each gap 310b has a size that allows the downwash of the unmanned aerial vehicle 200 to pass through. Each gap 310b is, for example, a square gap with a side length of 5 to 10 cm. However, the shape of the gaps 310b is not limited to this and may be, for example, rectangular, circular, elliptical, diamond-shaped, or polygonal.

[0023] For example, if the mass of unmanned aerial vehicle 200 is 300 kg and the mass of cargo 400 is 30 kg, the proportion of the projected area of ​​gap 310b to net 310 is 10%. If the mass of unmanned aerial vehicle 200 is 300 kg and the mass of cargo 400 is 15 kg, the proportion of the projected area of ​​gap 310b to net 310 is 5%. In this way, the proportion of the projected area of ​​gap 310b to net 310 is set to increase as the ratio of the airframe mass to the cargo mass increases. The size of gap 310b is adjusted depending on the expected model of unmanned aerial vehicle 200 and the magnitude of downwash. In this way, by combining the appropriate elasticity of linear member 310a and the appropriate size of gap 310b according to cargo 400, it is possible to avoid the effects of downwash while absorbing the impact of falling cargo 400 and appropriately receiving cargo 400.

[0024] Returning to FIG. 1, the transport mechanism 320 includes a plurality of damper-equipped slide rails (support members) 322, a first wire 324a, and a second wire 324b.

[0025] The damper-equipped slide rail 322 includes a first slide rail 322a, a second slide rail 322b, a third slide rail 322c, and a fourth slide rail 322d (hereinafter, they may be collectively referred to as slide rails 322). Each slide rail 322 is erected upward from the roof surface of the building by a holding member (not shown). The multiple slide rails 322 support the net 310 at a position spaced above the roof surface of the building. The net 310 is suspended from the multiple slide rails 322 in a state where it is unfolded so as to spread out in a generally horizontal direction. In this case, it is preferable that the tension applied to the net 310 be adjusted to an appropriate tension that can absorb the impact of falling cargo 400 and properly catch the cargo 400.

[0026] Each of the slide rails 322a, 322b, 322c, and 322d has a groove 326 formed therein that extends in the longitudinal direction. A slider 328 is attached to the groove 326, and the slider 328 can move back and forth along the groove 326.

[0027] Additionally, a coil spring (not shown) and a damper (not shown) are provided in groove 326. The coil spring presses slider 328 toward the upper end of each slide rail 322a, 322b, 322c, and 322d. The damper is configured, for example, by a cylinder filled with oil and air, and damps the vibration of the coil spring. The damper also functions as a shock absorbing member that absorbs the shock when cargo 400 is received. Furthermore, a ratchet mechanism is provided in groove 326, and slider 328 will not return upward until it is released.

[0028] One end of first wire 324a is connected to slider 328 of first slide rail 322a, and the other end of first wire 324a is connected to slider 328 of second slide rail 322b. As a result, first wire 324a is hung between first slide rail 322a and second slide rail 322b.

[0029] One end of second wire 324b is connected to slider 328 of third slide rail 322c, and the other end of second wire 324b is connected to slider 328 of fourth slide rail 322d. As a result, second wire 324b is hung between third slide rail 322c and fourth slide rail 322d.

[0030] A net 310 is attached between the first wire 324a and the second wire 324b. The first slide rail 322a and the second slide rail 322b are spaced apart in the direction in which the first wire 324a extends. The third slide rail 322c and the fourth slide rail 322d are spaced apart in the direction in which the second wire 324b extends. The first slide rail 322a and the second slide rail 322b face the third slide rail 322c and the fourth slide rail 322d with the net 310 sandwiched between them.

[0031] The distance between the bottom ends of the first slide rail 322a and the second slide rail 322b is narrower than the distance between the top ends of the first slide rail 322a and the second slide rail 322b. The distance between the first slide rail 322a and the second slide rail 322b gradually decreases from the top end to the bottom end.

[0032] The distance between the bottom ends of the third and fourth slide rails 322c and 322d is narrower than the distance between the top ends of the third and fourth slide rails 322c and 322d. The distance between the third and fourth slide rails 322c and 322d gradually decreases from the top end to the bottom end.

[0033] Additionally, the lower ends of the third slide rail 322c and the fourth slide rail 322d are positioned higher than the lower ends of the first slide rail 322a and the second slide rail 322b. A difference in height is provided between the lower ends of the third slide rail 322c and the fourth slide rail 322d and the lower ends of the first slide rail 322a and the second slide rail 322b. In this manner, the four slide rails 322 according to this embodiment function as a height difference providing mechanism that provides a height difference to the net 310. Note that providing a height difference to the net 310 means tilting the net 310 in one direction (for example, toward the take-out position 312, which will be described later) with respect to the horizontal plane.

[0034] FIG. 3 is a schematic perspective view showing a cargo receiving facility 300 according to a first embodiment of the present invention. As shown in FIG. 3, an external transport mechanism 350 includes a conveyor line 352 and a sorting mechanism 354. The conveyor line 352 is, for example, a roller conveyor, and transports cargo 400 placed on the rollers as the rollers are rotated by a motor (not shown). The conveyor line 352 branches into multiple sorting lines 356. In this embodiment, the number of multiple sorting lines 356 is three, but is not limited to three, and the number may be two, four, or more.

[0035] The sorting mechanism 354 is configured, for example, so that a triangular partition member can be rotated in direction a or b by a motor (not shown). The sorting mechanism 354 can change the traveling direction of the cargo 400 by coming into contact with the cargo 400 on the conveyor line 352. The sorting mechanism 354 can sort the cargo 400 moving on the conveyor line 352 into one of a plurality of sorting lines 356 by rotating in direction a or b in FIG. 3. In this embodiment, the large number of cargoes 400 on the conveyor line 352 can be sorted into three rows and stocked in each row.

[0036] In this embodiment, external transport mechanism 350 transports cargo 400 received by net 310 to a position at least a predetermined distance away from unmanned aerial vehicle 200. As will be described in detail below, cargo 400 on net 310 is guided to external transport mechanism 350 via take-out position 312. The guided cargo 400 moves along conveyor line 352, is sorted by sorting mechanism 354 onto one of three sorting lines 356, and is stocked on each sorting line 356.

[0037] The external transport mechanism 350 transports the cargo 400 received by the net 310 to a position at least a predetermined distance away from the unmanned aerial vehicle 200. This allows the worker to safely unload the cargo without being affected by the downwash of the unmanned aerial vehicle 200 or being hit by the falling cargo 400. The sorting mechanism 354 allows the multiple cargoes 400 to be sorted according to type, size, mass, shape, etc. This reduces the burden on the worker sorting the cargo 400 received by the net 310.

[0038] [3. Operation of cargo receiving equipment] Next, the operation of the cargo receiving facility 300 according to this embodiment will be described with reference to FIGS.

[0039] First, as shown in FIG. 1, cargo 400 is carried to cargo receiving facility 300 by unmanned aerial vehicle 200, and unmanned aerial vehicle 200 is made to hover above cargo receiving facility 300.

[0040] Next, cargo 400 is detached by holding mechanism 220 of unmanned aerial vehicle 200 and dropped towards cargo receiving facility 300. Then, as shown in FIG. 3 , cargo 400 detached from holding mechanism 220 of unmanned aerial vehicle 200 drops onto net 310.

[0041] When cargo 400 falls onto net 310, the load is transmitted to the coil springs and dampers via first wire 324a, second wire 324b, and slider 328, causing the coil springs and dampers to contract. As the coil springs and dampers contract, slider 328 moves from the upper end to the lower end of each of slide rails 322a, 322b, 322c, and 322d.

[0042] As described above, the distance between first slide rail 322a and second slide rail 322b becomes narrower as it goes downward. Similarly, the distance between third slide rail 322c and fourth slide rail 322d also becomes narrower as it goes downward.

[0043] 2, when the slider 328 moves downward along the slide rail 322 to receive the cargo 400, the net 310 also bends downward as the first wire 324a and the second wire 324b bend downward. As the first wire 324a and the second wire 324b bend downward, the amount of bending of the net 310 increases. As the amount of bending of the net 310 increases, the position of the cargo 400 is guided to the center of the net 310 by the weight of the cargo 400. As described above, the net 310 is flexible, and the slider 328 moves downward along the slide rail 322 while the shock absorbing function of the damper is activated, so that the net 310 can stably receive the fallen cargo 400.

[0044] The cargo 400 received by the net 310 is then automatically moved to the removal position 312 on one side of the net 310 by the height difference providing mechanism. Specifically, the lower ends of the third slide rail 322c and the fourth slide rail 322d are positioned higher than the lower ends of the first slide rail 322a and the second slide rail 322b. As shown in FIG. 3, when the net 310 reaches the lower end and bends, the end of the net 310 on the side of the third slide rail 322c and the fourth slide rail 322d is positioned higher than the end on the side of the first slide rail 322a and the second slide rail 322b. As a result, the bent net 310 is tilted downward from the side of the third slide rail 322c and the fourth slide rail 322d toward the side of the first slide rail 322a and the second slide rail 322b.

[0045] This allows cargo 400 on net 310 to be slid and moved from the side of third slide rail 322c and fourth slide rail 322d toward the side of first slide rail 322a and second slide rail 322b. In other words, cargo 400 on net 310 can be slid and moved toward removal position 312. As a result, cargo 400 slides on net 310 and is guided to removal position 312, which is one end of net 310.

[0046] An external transport mechanism 350 is provided at a location adjacent to the take-out position 312 of the net 310. The cargo 400 that has moved to the take-out position 312 is guided by the external transport mechanism 350.

[0047] When cargo 400 moves from net 310 to external transport mechanism 350 and the ratchet mechanism of groove 326 is unlocked, the load applied to the coil spring of each slide rail 322 is released, causing the coil spring to expand. As the coil spring expands, slider 328 moves from the lower end to the upper end of each slide rail 322.

[0048] [4. Summary] As described above, the cargo receiving facility 300 of this embodiment can suitably receive cargo 400 that has fallen from an unmanned aerial vehicle 200 in flight. Therefore, there is no need to secure a takeoff and landing area for the unmanned aerial vehicle 200 to take off and land in the building in which the cargo receiving facility 300 is installed. Furthermore, because the unmanned aerial vehicle 200 does not need to take off and land at the cargo receiving facility 300 in the building, it is possible to reduce the energy consumed when the unmanned aerial vehicle 200 takes off and land.

[0049] Furthermore, since the takeoff and landing time of the unmanned aerial vehicle 200 can be eliminated, the cargo 400 can be continuously received at one cargo receiving facility 300, improving the time efficiency when receiving the cargo 400. Furthermore, no manpower is required when receiving the cargo 400, and the number of personnel can be reduced.

[0050] The cargo receiving facility 300 includes a net 310 suspended between a plurality of support members (for example, slide rails 322a, 322b, 322c, and 322d). The net 310 has flexibility according to the mass of the cargo 400. Therefore, it is possible to absorb the impact when the cargo 400 falls onto the net 310.

[0051] Furthermore, net 310 has a plurality of gaps whose size corresponds to the pressure of the downwash of unmanned aerial vehicle 200. Therefore, cargo 400 that falls onto net 310 can be prevented from being affected by the downwash generated by rotors 210 of unmanned aerial vehicle 200 and moving irregularly and unstably on net 310. As a result, cargo receiving equipment 300 can properly receive cargo 400 that falls from unmanned aerial vehicle 200.

[0052] Furthermore, slide rails 322a, 322b, 322c, and 322d have sliders 328 to which ends of net 310 are connected. Sliders 328 move along slide rails 322a, 322b, 322c, and 322d, thereby mitigating the impact when cargo 400 that has fallen from unmanned aerial vehicle 200 is received by net 310.

[0053] Furthermore, the slide rails 322a, 322b, 322c, and 322d have dampers that absorb the impact when the slider 328 moves downward along the slide rails 322a, 322b, 322c, and 322d, thereby reducing the impact when the slider 328 moves downward along the slide rails 322a, 322b, 322c, and 322d.

[0054] Furthermore, with the cargo receiving equipment 300 of this embodiment, it is only necessary to secure space on the rooftop of the building for receiving a single cargo 400 and space for storing the received cargo 400, thereby reducing the cost of installing infrastructure on the building side.

[0055] Additionally, the lower ends of third slide rail 322c and fourth slide rail 322d are positioned higher than the lower ends of first slide rail 322a and second slide rail 322b. As a result, when cargo 400 falls onto net 310, the lower end of net 310 on the side of third slide rail 322c and fourth slide rail 322d is positioned higher than the lower end on the side of first slide rail 322a and second slide rail 322b.

[0056] In this way, the first slide rail 322a, the second slide rail 322b, the third slide rail 322c, and the fourth slide rail 322d of this embodiment function as a height difference imparting mechanism that imparts height differences to the net 310. By imparting height differences to the net 310, the cargo 400 received by the net 310 can be slid and automatically moved to the take-out position 312, and can also be moved from the take-out position 312 to the external transport mechanism 350. Therefore, a separate drive device for moving the cargo 400 received by the net 310 to the external transport mechanism 350 is not required.

[0057] Furthermore, external transport mechanism 350 transports cargo 400 received by net 310 to a position outside net 310 away from unmanned aerial vehicle 200. Therefore, cargo 400 can be opened and closed at a position away from unmanned aerial vehicle 200, so that even general workers other than dedicated operators can easily unload cargo.

[0058] When cargo 400 is dropped onto net 310, the weight of unmanned aerial vehicle 200 is reduced by the weight of cargo 400. Therefore, when unmanned aerial vehicle 200 returns from cargo receiving facility 300 to the landing site and lands at the landing site, the landing posture of unmanned aerial vehicle 200 is unified, making it easier to control the aircraft.

[0059] 5. Second Embodiment Next, a cargo receiving facility according to a second embodiment of the present invention will be described with reference to Fig. 4. Fig. 4 is a schematic perspective view showing a cargo receiving facility 500 according to the second embodiment of the present invention. Note that, with regard to the cargo receiving facility 500 according to the second embodiment, components that are substantially the same as those of the cargo receiving facility 300 according to the first embodiment described above will be assigned the same reference numerals and detailed description thereof will be omitted.

[0060] As shown in FIG. 4, the cargo receiving equipment 500 according to the second embodiment includes a plurality of support members (first support 510a, second support 510b, third support 510c, and fourth support 510d), a net 310, and a conveying mechanism 520.

[0061] The support members are posts for supporting the net 310. The support members according to this embodiment include a first post 510a, a second post 510b, a third post 510c, and a fourth post 510d (hereinafter, sometimes collectively referred to as posts 510). Each post 510 has the same height. The four posts 510 support the net 310 at a position spaced above the rooftop of the building.

[0062] The transport mechanism 520 includes a height difference imparting mechanism 530 and an external transport mechanism 350. The height difference imparting mechanism 530 applies downward tension to the take-out position 312 on one end side of the net 310, thereby imparting a height difference to the net 310.

[0063] The height difference providing mechanism 530 positions the end of the net 310 on the side of the third support column 510c and the fourth support column 510d at a higher position than the end of the net 310 on the side of the first support column 510a and the second support column 510b at the take-out position 312. The height difference providing mechanism 530 tilts at least a partial area of ​​the net 310 downward toward the take-out position 312. This allows the cargo 400 on the net 310 to slide automatically from the side of the third support column 510c and the fourth support column 510d toward the take-out position 312 on the side of the first support column 510a and the second support column 510b.

[0064] As described above, the cargo receiving facility 500 according to the second embodiment includes the support columns 510a, 510b, 510c, and 510d as support members for supporting the net 310, instead of the damper-equipped slide rails 322 of the first embodiment. Therefore, the configuration of the support members can be simplified compared to the cargo receiving facility 300 according to the first embodiment. Furthermore, the functions and effects described in the first embodiment can be obtained.

[0065] While the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such embodiments. It is clear that those skilled in the art can conceive of various modifications and alterations within the scope of the claims, and it is understood that such modifications and alterations also fall within the technical scope of the present invention.

[0066] In the cargo receiving facilities 300 and 500 according to the above embodiments, an example has been described in which an elevation difference imparting mechanism 530 that imparts an elevation difference to the net 310 is provided. However, the elevation difference imparting mechanism 530 is not an essential component, and the cargo receiving facilities do not necessarily need to be provided with an elevation difference imparting mechanism.

[0067] In the cargo receiving facilities 300 and 500 according to the above embodiments, an example has been described in which an external transport mechanism 350 that transports cargo 400 is provided outside the net 310. However, the external transport mechanism 350 is not an essential component, and the external transport mechanism 350 does not necessarily have to be provided in the cargo receiving facilities. [Explanation of symbols]

[0068] 100 Cargo Transport System 200 unmanned aircraft 210 Rotor 220 Retention mechanism 300 Cargo Receiving Facilities 310 Net 310a Linear member 310b Gap 312 Extraction position 320 Conveyor Mechanism 322 Damper-equipped slide rail 322a First slide rail 322b Second slide rail 322c 3rd slide rail 322d 4th slide rail 324a First Wire 324b Second Wire 326 Groove 328 Slider 350 External transport mechanism 400 Freight 520 Transport mechanism 510a 1st pillar 510b 2nd pillar 510c 3rd post 510d 4th pillar 530 Height difference imparting mechanism

Claims

1. A cargo receiving facility that receives cargo dropped from an unmanned aerial vehicle in flight, a net suspended between a plurality of support members; a conveying mechanism that conveys the cargo received by the net; Equipped with The net is It has elasticity and having a plurality of gaps, The transport mechanism includes: A height difference imparting mechanism that imparts a height difference to the net, The height difference imparting mechanism tilts at least a portion of the net downward toward a take-out position at one side end of the net, and the tilted net slides the received cargo to the take-out position. Cargo receiving facilities.

2. The transport mechanism includes:

2. The cargo receiving facility according to claim 1, further comprising an external transport mechanism for transporting the cargo slid to the removal position at one side end of the net to the outside of the net.

3. 3. The cargo receiving facility according to claim 1, wherein the support member includes a slide rail having a slider to which an end of the net is connected.

4. 4. The cargo receiving facility according to claim 3, wherein the slide rail has a damper that absorbs shock when the slider moves downward along the slide rail.

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