Unmanned aerial vehicle positioning and releasing device for subway special goods transportation

Abstract

This invention discloses a drone positioning and delivery device for special cargo transportation in subways, belonging to the field of drone transportation technology. The device includes a support plate, the top of which has a receiving mechanism for receiving the delivered cargo. The receiving mechanism includes a shifting frame, on one side of which two wire-laying seats are slidably mounted. The two wire-laying seats on the two shifting frames are arranged in pairs, and a buffer rope is provided between the corresponding two wire-laying seats. By setting up the receiving mechanism and using the buffer rope, this invention receives and decelerates the cargo during its descent. Compared to the existing method of manually unloading cargo after drone landing, this application eliminates the landing-unloading-retakeoff process during delivery. The drone directly delivers cargo in the air, significantly shortening delivery time and improving delivery efficiency.

Description

Technical Field

[0001] This invention relates to the field of drone transportation technology, and in particular to a drone positioning and delivery device for special cargo transportation in subways. Background Technology

[0002] Currently, the intermodal transport model combining subway networks with drone systems is entering the practical exploration stage as a new technological solution. This concept stems from the fact that urban subway systems have significant idle transport capacity during nighttime or off-peak hours, while drone technology can overcome terrain limitations and achieve flexible point-to-point location-based storage and retrieval transportation. The combination aims to leverage their respective advantages: drones handle the rapid collection and distribution of goods in areas far from subway stations or with inconvenient transportation, utilizing their flexibility and high efficiency to collect goods; subsequently, the goods are consolidated at subway stations, utilizing the high capacity, punctuality, and unaffected by ground traffic characteristics of subway trains for efficient cross-regional transportation, thereby constructing an efficient logistics system.

[0003] However, in the actual implementation of the aforementioned drone delivery and subway connection, the current common operating model is as follows: the drone needs to carry the goods to a designated delivery point near the subway station and land completely, after which ground personnel manually unload the goods before the drone can take off again to return. This workflow of landing first, then waiting for manual unloading before taking off again not only consumes a lot of time and severely reduces the turnaround and delivery efficiency of the drones themselves, greatly diminishing their timeliness advantage, but also creates continuous reliance on manpower and costs, making it difficult to achieve truly fully automated intermodal transport, which falls short of the original intention of building an efficient logistics system. Summary of the Invention

[0004] This invention provides a drone positioning and delivery device for special cargo transportation in subways, which can solve the problem in the existing technology where the drone first lands, then the cargo is unloaded manually, and then it takes off again, which takes up a lot of time and reduces delivery efficiency.

[0005] This invention provides a drone positioning and delivery device for special cargo transportation in subways, including a carrying plate. The top of the carrying plate has a receiving mechanism for receiving the delivered cargo. A lifting platform is provided in the middle of the carrying plate, and a lifting mechanism for driving its lifting movement is provided at the bottom of the lifting platform. The receiving mechanism includes two sets of parallel columns, with an upper receiving component between the columns in the same set. The upper receiving component includes a shifting frame, with two wire-laying seats slidably mounted on one side of the shifting frame. The two wire-laying seats on the two shifting frames are arranged in pairs, and a buffer rope is provided between the two corresponding wire-laying seats. An adjustment component for adjusting the position of the two wire-laying seats is provided inside the shifting frame.

[0006] As a further aspect of the present invention: a buffer sleeve is provided in the middle of the buffer pull rope, a receiving column is fixedly connected to the top of the buffer sleeve, a central disk is fixedly connected to the top of the receiving column, a receiving soft disk is fixedly connected to the top edge of the central disk, and the thickness of the receiving soft disk gradually decreases from the center to the edge.

[0007] As a further aspect of the present invention: the top of the receiving floppy disk is fixedly connected with a number of concentrically arranged buffer resistance washers, and the buffer resistance washers closer to the center are higher.

[0008] As a further aspect of the present invention: the adjustment assembly includes a drive frame, which is slidably connected to the inner wall of the adjustment frame; a drive motor is fixedly installed inside the drive frame, and a drive roller is fixedly connected to the output end of the drive motor; two linear guide rails are fixedly connected to one side of the drive frame, and the output ends of the two linear guide rails are respectively fixedly connected to one side of two wire feeding seats.

[0009] As a further aspect of the present invention: the wire feeding base includes a mounting cover plate, a wire feeding motor is fixedly mounted on the inner wall of the mounting cover plate, a winding reel is fixedly connected to the output end of the wire feeding motor, a buffer rope is wound around the middle of the winding reel, and a wire feeding hole for the buffer rope to pass through is provided on one side of the mounting cover plate. As a further aspect of the present invention: a lower support assembly is provided between two adjacent sets of columns, the lower support assembly being located below the upper support assembly and vertically offset from the upper support assembly, the structure of the lower support assembly being the same as that of the upper support assembly, and a buffer connector is provided between the two buffer sleeves of the lower support assembly and the two buffer sleeves of the upper support assembly, the buffer connector including a bottom sleeve, a bottom through groove being provided on the bottom edge of the bottom sleeve, and a buffer connecting rod being slidably connected to the top of the bottom sleeve.

[0010] As a further aspect of the present invention: the top of the lifting platform is provided with a cargo limiting mechanism, the cargo limiting mechanism includes a limiting frame, a discharge port is provided on one side of the limiting frame, a tilting motor is rotatably installed at the bottom of the discharge port, the output end of the tilting motor is fixedly connected to a discharge baffle, and a number of parallel exhaust channels are provided on the side wall of the limiting frame.

[0011] As a further aspect of the present invention: each corner of the limiting frame is provided with a limiting post, and the middle of the limiting post is provided with a plurality of buffer support members arranged at equal intervals. The buffer support member includes a mounting ring, one side of the mounting ring is provided with an air supply hole, the inner wall of the mounting ring is provided with an air guide cavity, the air supply hole is connected to one side of the air guide cavity, the side of the air guide cavity away from the air supply hole is provided with a through groove, the inner cavity of the limiting post is provided with an air supply guide groove, and the middle of the through groove is connected to the air supply guide groove.

[0012] As a further embodiment of the present invention: the bottom edge of the mounting ring is provided with a toothed groove, a directional motor is provided below the mounting ring, a directional gear is fixedly connected to the output end of the directional motor, the directional gear meshes with the toothed groove, and a partition baffle is fixedly connected to the other side of the mounting ring.

[0013] As a further aspect of the present invention: the lifting mechanism includes a base, a plurality of lifting columns are fixedly connected to the top edge of the base, a lifting drive assembly is slidably installed in the middle of each of the plurality of lifting columns, a connecting frame is provided below the lifting platform, the edge of the connecting frame is fixedly connected to the plurality of lifting drive assemblies, a bearing cylinder is fixedly installed in the middle of the connecting frame, and the output end of the bearing cylinder is rotatably connected to the bottom center of the lifting platform.

[0014] As a further aspect of the present invention: a movable frame is fixedly installed on the inner wall of the connecting frame, a plurality of shifting guide rails are fixedly installed on the inner wall of the movable frame, an electric push rod is slidably installed on the inner wall of each of the shifting guide rails, a docking block is fixedly connected to the output end of the electric push rod, a plurality of docking grooves are provided on the bottom edge of the lifting platform, and a plurality of docking blocks are slidably connected to the inner wall of the plurality of docking grooves respectively.

[0015] As a further aspect of the present invention: the lifting drive assembly includes a sliding cover, a lifting motor is fixedly installed inside the sliding cover, a lifting guide wheel is fixedly installed at the output end of the lifting motor, and the lifting guide wheel is in close contact with the outer wall of the lifting column.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention sets up a receiving mechanism and uses a buffer rope to receive and decelerate the goods in the falling state, so that they can fall smoothly onto the support plate. Compared with the existing method of manually unloading goods after the drone lands, this application eliminates the work process of landing-unloading-retake-off when the drone is delivering goods. The method of drone directly dropping goods in the air does not require human intervention, reduces manpower consumption, greatly shortens the delivery time, and improves the efficiency of delivery work. This invention utilizes a buffer sleeve and a receiving soft disk in the middle of the buffer rope to achieve gentle contact and effective deceleration with the cargo by means of the deformation of the receiving soft disk itself. The design of the receiving soft disk, which gradually thins from the center to the edge, allows it to provide gradual buffering force support feedback during contact with the cargo, further improving the buffering effect and reducing cargo damage. This invention features a cargo-limiting mechanism at the top of a lifting platform. The area enclosed by the limiting frame and the lifting platform allows for the temporary storage and collection of cargo dropped by a drone. Exhaust channels on the limiting frame allow for the timely release of air compressed by the cargo during its descent, utilizing an air cushion effect to decelerate and buffer the cargo's final landing, ensuring a smooth descent onto the lifting platform. Furthermore, air is supplied through air holes on several mounting rings, increasing the internal air pressure of the limiting frame and thus enhancing the cargo's descent resistance and buffering effect. A directional motor drives the mounting rings to rotate, which in turn moves the separating baffles, bringing them into contact with the cargo and providing support and limiting for it. Attached Figure Description Figure 1 This is a perspective view of the present invention; Figure 2 This is a side cross-sectional view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a schematic diagram of the position and structure of the buffer connector of the present invention; Figure 5 This is a schematic diagram of the structure of the adjustment component of the present invention; Figure 6 This is a schematic diagram of the mounting ring structure of the present invention; Figure 7 This is a schematic diagram illustrating the changes in the working state of the receiving mechanism of the present invention; Figure 8 This is a schematic diagram of the unloading state of the present invention.

[0017] Explanation of reference numerals in the attached figures: 101. Bearing plate; 102. Column; 103. Shifting frame; 104. Cable feeder; 105. Buffer sleeve; 106. Center plate; 107. Receiving floppy disk; 108. Buffer pull rope; 109. Buffer connecting rod; 110. Bottom sleeve; 111. Bottom through groove; 112. Winding reel; 113. Drive frame; 114. Drive roller; 115. Linear guide rail; 116. Buffer resistance washer; 201. Limiting frame; 20 2. Exhaust duct; 203. Unloading baffle; 204. Mounting ring; 205. Air inlet; 206. Dividing baffle; 207. Limiting post; 208. Air inlet guide duct; 209. Air guide chamber; 210. Through groove; 211. Directional motor; 301. Lifting platform; 302. Base; 303. Lifting column; 304. Lifting drive assembly; 305. Bearing cylinder; 306. Shifting guide rail; 307. Electric push rod; 4. Goods. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0019] like Figures 1 to 2 As shown in the embodiment of the present invention, the UAV positioning and delivery device for subway special cargo transportation provided by the present invention includes a support plate 101. The top of the support plate 101 has a receiving mechanism for receiving the delivered cargo 4. The receiving mechanism includes two sets of parallel columns 102. An upper receiving assembly is provided between the columns 102 in the same set. The upper receiving assembly includes a shifting frame 103. Two wire-laying seats 104 are slidably mounted on one side of the shifting frame 103. The two wire-laying seats 104 on the two shifting frames 103 are arranged in pairs and corresponding to each other. A buffer rope 108 is provided between the two corresponding wire-laying seats 104. The interior of the shifting frame 103 is provided with a mechanism for controlling the two wire-laying seats 104. 4. An adjustment component for adjusting the position; a lifting platform 301 is provided in the middle of the support plate 101, and a lifting mechanism for driving its lifting movement is provided at the bottom of the lifting platform 301; this application sets up a receiving mechanism and uses a buffer rope 108 to receive and decelerate the cargo 4 in the falling state, so that it can fall smoothly onto the support plate 101. Compared with the existing method of manually unloading the cargo 4 after the drone lands, this application eliminates the work process of landing-unloading-retake-off when the drone delivers goods. The method of the drone directly dropping the cargo 4 in the air does not require human intervention, reduces manpower consumption, greatly shortens the delivery time, and improves the efficiency of delivery work.

[0020] Please see Figure 4To reduce the impact and cutting damage of the buffer rope 108 on the released goods 4, a buffer sleeve 105 is provided in the middle of the buffer rope 108. A receiving column is fixedly connected to the top of the buffer sleeve 105, and a central disk 106 is fixedly connected to the top of the receiving column. A receiving soft disk 107 is fixedly connected to the top edge of the central disk 106. The thickness of the receiving soft disk 107 gradually decreases from the center to the edge. By utilizing the deformation of the receiving soft disk 107 itself, a gentle contact and effective deceleration are achieved with the goods 4, thus achieving stable buffering of the goods 4. The design of the receiving soft disk 107 gradually decreasing in thickness from the center to the edge allows its edge to deform and bend when subjected to a relatively light impact from the goods 4. During the contact with the goods 4, the receiving soft disk 107 can provide a gradual buffering force support feedback, further improving the buffering effect and reducing damage to the goods 4.

[0021] To increase the frictional resistance between the receiving floppy disk 107 and the cargo 4, a number of concentrically arranged buffer resistance washers 116 are fixedly connected to the top of the receiving floppy disk 107. The closer the buffer resistance washer 116 is to the center, the higher its height is, so that the buffer resistance washer 116 closer to the center area has greater resistance, thereby providing greater falling resistance when the cargo 4 is heavier, and effectively buffering cargo 4 of different weights.

[0022] Please see Figure 1 and Figure 3 To improve the stability of the cargo 4, this application sets a lower support component between two adjacent sets of different columns 102. The lower support component is located below the upper support component and is vertically offset from the upper support component. The structure of the lower support component is the same as that of the upper support component. By using the lower support component and the upper support component in conjunction, and using two sets of vertical buffer ropes 108, a square barrier structure is formed to distribute the force on the cargo 4 and achieve a more uniform buffering and deceleration effect on the cargo 4. In specific implementation, multiple sets of support components with different tilt angles and spacings can also be set as needed to obtain different deceleration and buffering effects.

[0023] Please see Figure 4 To achieve linkage between the two sets of buffer sleeves 105 and thus make the position of each receiving floppy disk 107 flexibly adjustable, buffer connectors are provided between the two buffer sleeves 105 of the lower receiving component and the two buffer sleeves 105 of the upper receiving component. Specifically, to further improve the buffering capacity, the buffer connector includes a bottom sleeve 110, with a bottom through groove 111 opened on the bottom edge of the bottom sleeve 110, and a buffer connecting rod 109 slidably connected to the top of the bottom sleeve 110. When subjected to impact, the airflow inside the bottom sleeve 110 is squeezed out from the bottom through groove 111 by sliding the buffer connecting rod 109, thereby using the reaction force to achieve buffering and deceleration.

[0024] Please see Figure 3 and Figure 5 The adjustment assembly includes a drive frame 113, which is slidably connected to the inner wall of the adjustment frame. A drive motor is fixedly installed inside the drive frame 113, and a drive roller 114 is fixedly connected to the output end of the drive motor. Two linear guide rails 115 are fixedly connected to one side of the drive frame 113. The output ends of the two linear guide rails 115 are respectively fixedly connected to one side of the two wire feeding seats 104. The drive roller 114 drives the drive frame 113 and the linear guide rails 115 to move, and the linear guide rails 115 drive the two wire feeding seats 104 to move respectively, thereby adjusting the position and spacing of the two buffer ropes 108 to adapt to goods 4 of different sizes. After the goods 4 are decelerated and buffered, the adjustment assembly drives the buffer ropes 108 to move away, thereby releasing the goods 4 and allowing it to fall naturally.

[0025] To enable the release and tightening of the buffer rope 108, the wire feeding base 104 includes a mounting cover plate. A wire feeding motor is fixedly installed on the inner wall of the mounting cover plate. A winding reel 112 is fixedly connected to the output end of the wire feeding motor. The buffer rope 108 is wound around the middle of the winding reel 112. A wire feeding hole for the buffer rope 108 to pass through is provided on one side of the mounting cover plate.

[0026] Please see Figure 1 and Figure 2 To facilitate the temporary storage and collection of cargo 4 dropped by the drone, a cargo limiting mechanism is provided on the top of the lifting platform 301. The cargo limiting mechanism includes a limiting frame 201, and several sets of parallel exhaust channels 202 are provided on the side wall of the limiting frame 201. The cargo 4 is temporarily stored in the area enclosed by the limiting frame 201 and the top surface of the lifting platform 301. Furthermore, by opening exhaust channels 202 on the limiting frame 201, the air compressed by the cargo 4 below is discharged in time during the fall of the cargo 4, thereby decelerating and buffering the cargo in the final stage and allowing it to fall smoothly onto the lifting platform 301. To facilitate the unloading and removal of goods 4 inside the limit frame 201, a discharge port is provided on one side of the limit frame 201. A tilting motor is rotatably installed at the bottom of the discharge port, and a discharge baffle 203 is fixedly connected to the output end of the tilting motor.

[0027] To improve the cushioning capacity for cargo 4, limit posts 207 are installed at each corner of the limit frame 201. Several equidistant buffer supports are arranged in the middle of each limit post 207. Each buffer support includes a mounting ring 204. An air inlet 205 is provided on one side of the mounting ring 204, and an air guide cavity 209 is provided on the inner wall of the mounting ring 204. The air inlet 205 communicates with one side of the air guide cavity 209, and a through-hole is provided on the side of the air guide cavity 209 away from the air inlet 205. The inner cavity of the through groove 210 and the limiting post 207 is provided with an air supply guide groove 208. An air supply pipe is fixedly connected to the bottom of the air supply guide groove 208. One end of the air supply pipe is connected to the output end of an external air pump. The through groove 210 is connected to the middle of the air supply guide groove 208. Air is introduced through the air supply pipe and then sent out through the air supply holes 205 on several mounting rings 204 to increase the air pressure inside the limiting frame 201, thereby increasing the falling resistance of the cargo 4 and achieving effective buffering.

[0028] Please see Figure 6 To achieve stable separation and support of goods 4 of different sizes within the limiting frame 201, the bottom edge of the mounting ring 204 is provided with a toothed groove. A directional motor 211 is provided below the mounting ring 204, and a directional gear is fixedly connected to the output end of the directional motor 211. The directional gear meshes with the toothed groove. A partition baffle 206 is fixedly connected to the other side of the mounting ring 204. Driven by the directional motor 211, the mounting ring 204 is rotated, which in turn drives the partition baffle 206 to move, so that the partition baffle 206 contacts the goods 4 and supports and limits them.

[0029] Please see Figure 2 The lifting mechanism includes a base 302, with several lifting columns 303 fixedly connected to the top edge of the base 302. A lifting drive assembly 304 is slidably mounted in the middle of each of the lifting columns 303. A connecting frame is provided below the lifting platform 301, with its edge fixedly connected to the lifting drive assemblies 304. A bearing cylinder 305 is fixedly mounted in the middle of the connecting frame, and its output end is rotatably connected to the bottom center of the lifting platform 301. The lifting drive assembly 304 is used to drive the lifting platform 301 to move up and down. Its specific structure is described in [reference needed]. Implemented using existing technical means, this embodiment provides a feasible structure. The lifting drive assembly 304 includes a sliding cover, a lifting motor is fixedly installed inside the sliding cover, and a lifting guide wheel is fixedly installed at the output end of the lifting motor. The lifting guide wheel is in close contact with the outer wall of the lifting column 303. When lifting is required, the lifting motor drives the lifting guide wheel to rotate. Utilizing the reaction force of the friction between the lifting guide wheel and the lifting column 303, the lifting drive assembly 304 slides along the lifting column 303, thereby driving the connecting frame and the lifting platform 301 to move up and down.

[0030] To improve the posture adjustment capability of the lifting platform 301, a movable frame is fixedly installed on the inner wall of the connecting frame. Several shifting guide rails 306 are fixedly installed on the inner wall of the movable frame. Electric push rods 307 are slidably installed on the inner walls of the shifting guide rails 306. A docking block is fixedly connected to the output end of the electric push rod 307. Several docking slots are opened on the bottom edge of the lifting platform 301. Several docking blocks are slidably connected to the inner walls of the docking slots. The shifting guide rails 306 drive the electric push rods 307 to move laterally, changing the lifting output position of the electric push rods 307 on the lifting platform 301. This allows the pushing of the electric push rods 307 to drive the lifting platform 301 to move horizontally or tilt, thereby facilitating unloading or loading operations.

[0031] The working principle of the device of this invention is as follows: Please refer to the initial position state of the receiving mechanism. Figure 7 (a) First, adjust the position of the buffer rope 108 according to the size of the goods 4 to be received. This is achieved by starting the adjustment component inside the shifting frame 103, which drives the drive roller 114 to move the drive frame 113 and the linear guide rail 115 on it. This precisely adjusts the distance between the two wire feeding seats 104, changing the opening width of the buffer rope 108 connected between them, ensuring that it can effectively receive goods 4 of different sizes. The upper receiving component and the lower receiving component are ready after being adjusted by their respective adjustment components, together forming a square barrier buffer net. At this time, please refer to the position status of the receiving mechanism. Figure 7 (b); When the drone flies over the device and drops cargo 4, cargo 4 first falls and contacts the buffer structure of the receiving component. Its core is the buffer sleeve 105 component with a receiving floppy disk 107. The design of the floppy disk thickness gradually thins from the center to the edge, so that it can immediately fit the contour of cargo 4 and absorb the impact through deformation. The concentric buffer resistance washer 116 on the top of the floppy disk provides progressive friction resistance. The heavier the cargo 4, the greater the resistance generated by the high washer in the central area, achieving initial effective deceleration. The buffer sleeves 105 of the upper and lower receiving components are linked by a buffer connector. When impacted, the buffer connecting rod 109 slides in the bottom sleeve 110, quickly squeezing the internal air out of the bottom through groove 111. The resulting reaction force further consumes the kinetic energy of the cargo 4, enhancing the overall buffering effect. At the same time, it drives the buffer sleeve 105 of the lower receiving component to move down, dispersing and transferring the impact force to the buffer pull rope 108 of the lower receiving component. The multiple receiving pads on the two sets of buffer pull ropes 108 apply buffering force to the cargo 4 from different directions, making the force more even, preventing the cargo 4 from rolling, and achieving smooth guidance. After cargo 4 is decelerated by the buffer rope 108, multiple adjusting components act synchronously, causing the buffer rope 108 and the receiving pad on it to quickly separate, allowing cargo 4 to continue falling towards the lifting platform 301 area and enter the temporary storage area enclosed by the limit frame 201. At this time, please refer to the position status of the receiving mechanism. Figure 7 (c) When the cargo 4 falls, it compresses the air below. The air is discharged in an orderly manner through the exhaust channel 202 on the side wall of the limiting frame 201, forming an air cushion effect and achieving a soft landing at the end. Furthermore, an external air pump can deliver air to the air chamber 209 through the air delivery pipe and spray it out from the air delivery hole 205 to increase the air pressure in the temporary storage area and assist in deceleration. At the same time, the directional motor 211 can drive the partition baffle 206 to rotate. The contact between the partition baffle 206 and the cargo 4 can achieve adaptive limiting of cargo 4 of different sizes. After cargo 4 lands smoothly on the lifting platform 301, the lifting mechanism starts working, achieving the vertical descent of the lifting platform 301 via the lifting drive assembly 304. When cargo 4 needs to be removed, the tilting motor starts, opening the unloading baffle 203, allowing manual removal and transfer of cargo 4. At this time, please refer to the device position status. Figure 8 This completes a full cargo delivery and receiving process.

[0032] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A drone positioning and delivery device for special cargo transportation in subways, characterized in that, The system includes a support plate (101), the top of which has a receiving mechanism for receiving the delivered goods (4), a lifting platform (301) in the middle of the support plate (101), and a lifting mechanism for driving the lifting movement of the lifting platform (301) at the bottom. The receiving mechanism includes two sets of parallel columns (102), and an upper receiving component is provided between the columns (102) in the same set. The upper receiving component includes a shifting frame (103), and two wire feeding seats (104) are slidably installed on one side of the shifting frame (103). The two wire feeding seats (104) on the two shifting frames (103) are arranged in pairs and corresponding to each other, and a buffer pull rope (108) is provided between the two corresponding wire feeding seats (104). An adjustment component for adjusting the position of the two wire feeding seats (104) is provided inside the shifting frame (103).

2. The drone positioning and delivery device for special cargo transportation in subways as described in claim 1, characterized in that, A buffer sleeve (105) is provided in the middle of the buffer pull rope (108). A receiving column is fixedly connected to the top of the buffer sleeve (105). A central disk (106) is fixedly connected to the top of the receiving column. A receiving floppy disk (107) is fixedly connected to the top edge of the central disk (106). The thickness of the receiving floppy disk (107) gradually decreases from the center to the edge.

3. The drone positioning and delivery device for special cargo transportation in subways as described in claim 2, characterized in that, The top of the receiving floppy disk (107) is fixedly connected with several concentrically arranged buffer resistance washers (116), and the buffer resistance washers (116) closer to the center are higher.

4. The drone positioning and delivery device for special cargo transportation in subways as described in claim 1, characterized in that, The adjustment assembly includes a drive frame (113), which is slidably connected to the inner wall of the adjustment frame; a drive motor is fixedly installed inside the drive frame (113), and a drive roller (114) is fixedly connected to the output end of the drive motor; two linear guide rails (115) are fixedly connected to one side of the drive frame (113), and the output ends of the two linear guide rails (115) are respectively fixedly connected to one side of two wire feeding seats (104).

5. The drone positioning and delivery device for special cargo transportation in subways as described in claim 1, characterized in that, The wire feeding base (104) includes a mounting cover plate. A wire feeding motor is fixedly installed on the inner wall of the mounting cover plate. A winding reel (112) is fixedly connected to the output end of the wire feeding motor. A buffer pull rope (108) is wound around the middle of the winding reel (112). A wire feeding hole is opened on one side of the mounting cover plate.

6. The drone positioning and delivery device for special cargo transportation in subways as described in claim 1, characterized in that, A lower support assembly is provided between two adjacent different sets of columns (102). The structure of the lower support assembly is the same as that of the upper support assembly. A buffer connector is provided between the two buffer sleeves (105) of the lower support assembly and the two buffer sleeves (105) of the upper support assembly. The buffer connector includes a bottom sleeve (110). A bottom through groove (111) is opened on the bottom edge of the bottom sleeve (110). A buffer connecting rod (109) is slidably connected to the top of the bottom sleeve (110).

7. The drone positioning and delivery device for special cargo transportation in subways as described in claim 1, characterized in that, The top of the lifting platform (301) is provided with a cargo limiting mechanism, which includes a limiting frame (201). A discharge port is provided on one side of the limiting frame (201). A flip motor is rotatably installed at the bottom of the discharge port. A discharge baffle (203) is fixedly connected to the output end of the flip motor. Several sets of parallel exhaust channels (202) are opened on the side wall of the limiting frame (201).

8. The drone positioning and delivery device for special cargo transportation in subways as described in claim 7, characterized in that, Each corner of the limiting frame (201) is provided with a limiting post (207). The middle part of the limiting post (207) is provided with several buffer support members arranged at equal intervals. The buffer support members include a mounting ring (204). One side of the mounting ring (204) is provided with an air supply hole (205). The inner wall of the mounting ring (204) is provided with an air guide cavity (209). The air supply hole (205) is connected to one side of the air guide cavity (209). The side of the air guide cavity (209) away from the air supply hole (205) is provided with a through groove (210). The inner cavity of the limiting post (207) is provided with an air supply guide groove (208). The through groove (210) is connected to the middle part of the air supply guide groove (208).

9. The drone positioning and delivery device for special cargo transportation in subways as described in claim 1, characterized in that, The lifting mechanism includes a base (302), and a plurality of lifting columns (303) are fixedly connected to the top edge of the base (302). Lifting drive components (304) are slidably installed in the middle of the plurality of lifting columns (303). A connecting frame is provided below the lifting platform (301). The edge of the connecting frame is fixedly connected to the plurality of lifting drive components (304). A bearing cylinder (305) is fixedly installed in the middle of the connecting frame. The output end of the bearing cylinder (305) is rotatably connected to the bottom center of the lifting platform (301).

10. The drone positioning and delivery device for special cargo transportation in subways as described in claim 9, characterized in that, The inner wall of the connecting frame is fixedly installed with a movable frame, and the inner wall of the movable frame is fixedly installed with a plurality of shifting guide rails (306). The inner walls of the plurality of shifting guide rails (306) are slidably installed with electric push rods (307). The output end of the electric push rods (307) is fixedly connected with a docking block. The bottom edge of the lifting platform (301) is provided with a plurality of docking grooves, and the plurality of docking blocks are slidably connected to the inner walls of the plurality of docking grooves respectively.

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