Double-cage unmanned distribution vehicle

Abstract

The double-cage unmanned distribution vehicle comprises a vehicle frame, the middle of the vehicle frame is hollowed out, the bottom of the vehicle frame is open, a soft shed is arranged at the top of the vehicle frame, a telescopic platform stretching towards the side face of the vehicle frame is arranged at the opening, and the vehicle frame is provided with a lifting mechanism and connected with the telescopic platform. The telescopic platform stretches out, the cage trolley is pushed to the telescopic platform, and the telescopic platform pulls the cage trolley into the frame and lifts the cage trolley in place; when the cage trolley is unloaded, the telescopic platform descends to make the cage trolley make contact with the ground, the telescopic platform drives the cage trolley to stretch out towards the side face of the frame, and automatic unloading is achieved. In the loading and unloading process, the cage trolley only needs to ascend, descend, stretch and retract and does not need to be overturned, and express items in the cage trolley are prevented from being damaged; two cage trolleys can be loaded at a time, the transportation volume of the unmanned distribution vehicle is multiplied, and the distribution efficiency is improved; the cage trolley adopts vertical transportation and is matched with the vertical stress design of the cage trolley, so that the service life of the cage trolley is prevented from being influenced; automatic unloading is achieved, manual cargo receiving is not needed, and the loading and unloading efficiency is improved; the soft shed can be jacked up to load a high cage trolley, and the adaptability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent vehicles, and in particular to a double-cage unmanned delivery vehicle. Background Art

[0002] Cage trucks are a type of unit mobile container equipment equipped with several casters to transport and store goods. They are common cargo carriers in logistics transportation, transit sorting, and can achieve rapid unloading, online sorting, and loading of goods, thus improving the efficiency of express delivery. In the process of logistics transportation, cage trucks are used to ensure the safety of materials on the one hand, and on the other hand, they will not clutter the sorted goods, saving time and effort in subsequent loading and unloading.

[0003] At present, cage trucks and logistics vehicles are independent of each other and have no connection. After the goods are loaded into the cage truck, they need to be moved to the logistics vehicle by manual labor or forklifts. After arriving at the destination or transfer point, the cage truck needs to be unloaded. Since the fully loaded cage truck is heavy (can reach about 400 kg), the handling efficiency is low, which prolongs the transportation time of express delivery and poses certain safety hazards.

[0004] Although there are also solutions for automatic loading and unloading cage cars on the market, such as a courier delivery flipping mechanism and a delivery unmanned vehicle disclosed in the Chinese patent document with publication number CN 117922408 A, the loading part is movably arranged on the unmanned vehicle body, and the loading part is driven by the cooperation of the movable part and the connecting part, so that the loading part can slide forward and backward under the guidance of the guide part, and complete the flipping action under the limiting action of the guide part. By moving the loading part backward and then flipping it backward, the loading part can be set vertically, so that the express can be directly pushed into the loading part, and then the loading part is flipped forward and set horizontally, and finally the loading part is moved forward to a predetermined position, thereby completing the automatic loading of the express. However, this technical solution has the following shortcomings: 1. The cage car needs to be flipped 90 degrees during loading and unloading, causing the express parcels at high places in the cage car to flip over, which can easily cause the express parcels to be crushed under the action of gravity; 2. The unmanned vehicle can only load one cage car at a time and can only serve one branch point, which is inefficient; 3. The cage car is designed to bear vertical force, and its force points are concentrated at the bottom. The lateral bearing capacity is limited. When horizontal transportation is adopted, the service life of the cage car will be reduced; 4. When unloading, manual labor is required to wait for the delivery and pull the cage car out, which is time-consuming and labor-intensive. If it cannot be unloaded in time, the utilization rate of the unmanned vehicle will be reduced. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a double-cage unmanned delivery vehicle that can automatically pull a cage truck into or push it out of a frame, is more convenient to use, is conducive to improving loading and unloading efficiency, and can load relatively high cage trucks.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A double-cage unmanned delivery vehicle comprises a frame, wherein the middle portion of the frame is hollowed out and the bottom is open, a soft canopy is provided on the top of the frame, a telescopic platform that is telescopic to the side of the frame is provided at the opening, a lifting mechanism is provided on the frame, the lifting mechanism is connected to the telescopic platform and drives the telescopic platform to perform lifting and lowering movements.

[0008] As a further improvement of the above technical solution: it also includes side doors, and the side doors and the lifting mechanism are arranged on both sides of the frame opposite to each other.

[0009] As a further improvement of the above technical solution: the side door is a double door or a rolling door.

[0010] As a further improvement of the above technical solution: the telescopic platform includes a bottom plate, a first telescopic plate arranged on the bottom plate and a telescopic driving member for driving the first telescopic plate to move relative to the bottom plate, and the bottom plate is connected to the lifting mechanism.

[0011] As a further improvement of the above technical solution: the telescopic platform also includes a second telescopic plate arranged on the first telescopic plate, and the second telescopic plate is connected to the telescopic driving member to move relative to the first telescopic plate.

[0012] As a further improvement of the above technical solution: the telescopic driving member is a first motor and is arranged on the first telescopic plate, the rotating shaft of the first motor is provided with a driving gear and a driving pulley, the bottom plate is provided with a rack, the driving gear is meshed with the rack, the first telescopic plate is provided with a driven pulley, the driving pulley and the driven pulley are wound with a synchronous belt, and the second telescopic plate is connected to the synchronous belt.

[0013] As a further improvement of the above technical solution: the second telescopic plate is a rectangular plate, and horizontally arranged second motors are provided at the four corner positions of the rectangular plate, and a locking block is provided on the rotating shaft of the second motor.

[0014] As a further improvement of the above technical solution: two telescopic platforms are provided, and both of the telescopic platforms are equipped with the lifting mechanism.

[0015] As a further improvement of the above technical solution: the lifting mechanism includes a lifting body, a lifting guide rail arranged on the frame and a lifting drive member for driving the lifting body to move relative to the lifting guide rail, the lifting body is connected to the telescopic platform, and the lifting guide rail is relatively arranged on both sides of the lifting body and is slidably connected to the lifting body.

[0016] As a further improvement of the above technical solution: the frame includes a top connecting frame, a side connecting frame and brackets arranged at the lower parts of the two ends of the top connecting frame, the upper part of the side connecting frame is connected to the top connecting frame, the two ends of the side connecting frame are connected to the side faces of the brackets, the telescopic platform is located between the brackets at the two ends, and the lifting mechanism is arranged on the side connecting frame.

[0017] Compared with the prior art, the advantages of the present invention are as follows: the double-cage unmanned delivery vehicle disclosed in the present invention has a hollow middle frame and an opening at the bottom, and a telescopic platform that can be extended to the side of the frame is provided at the opening, and the lifting and lowering is realized by a lifting mechanism. After the telescopic platform is extended, the cage car is pushed above the telescopic platform, and the telescopic platform can automatically pull the cage car into the frame and rise into place; when unloading the cage car, the lifting mechanism drives the telescopic platform to descend so that the cage car contacts the ground, and the telescopic platform drives the cage car to extend to the side of the frame to realize automatic unloading. Compared with the prior art, the present invention allows the cage car to be lifted, extended and retracted during loading and unloading without flipping, which helps avoid damage to express parcels inside the cage car; two cage cars can be loaded at one time, thereby doubling the transport capacity of unmanned delivery vehicles and improving delivery efficiency; the cage car adopts vertical transportation, which matches the vertical force design of the cage car to avoid affecting the service life of the cage car; automatic unloading can be achieved without manual receiving of goods, which is more convenient to use and helps improve loading and unloading efficiency; a soft roof is provided on the top of the frame, and when the cage car is high, the soft roof can be jacked up, so that a relatively high cage car can be loaded, and it has strong adaptability.

[0018] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the exterior of the double-cage unmanned delivery vehicle of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the right side inside the double-cage unmanned delivery vehicle of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the left side inside the double-cage unmanned delivery vehicle of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the telescopic platform in the present invention.

[0023] Figure 5 It is a partial enlarged view of the telescopic platform in the present invention.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the lifting mechanism and the telescopic platform in the present invention.

[0025] Figure 7It is a three-dimensional structural schematic diagram of the vehicle frame in the present invention.

[0026] Figure 8 It is a front view structural schematic diagram of the vehicle frame in the present invention.

[0027] The symbols in the figure represent:

[0028] 1. Frame; 11. Top connecting frame; 12. Side connecting frame; 13. Bracket; 2. Telescopic platform; 20. Driving pulley; 21. Bottom plate; 22. First telescopic plate; 23. Telescopic drive member; 24. Second telescopic plate; 25. Driving gear; 26. Rack; 27. Driven pulley; 28. Synchronous belt; 281. Protrusion; 29. ​​Lock block; 291. Second motor; 3. Lifting mechanism; 31. Lifting body; 311. Roller; 32. Lifting guide rail; 321. Guide groove; 33. Lifting drive member; 34. Connecting frame; 4. Cage car; 5. Soft shed; 6. Side door. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Figures 1 to 8 An embodiment of a double-cage unmanned delivery vehicle of the present invention is shown. The double-cage unmanned delivery vehicle of this embodiment includes a frame 1, the middle part of the frame 1 is hollow and the bottom is open, a soft canopy 5 is provided on the top of the frame 1, and a telescopic platform 2 that is telescopic to the side of the frame 1 is provided at the opening (according to the relevant requirements of road traffic regulations, the vehicle needs to drive on the right, so in this embodiment, the telescopic platform 2 extends to the right side of the frame 1), and a lifting mechanism 3 is provided on the frame 1, and the lifting mechanism 3 is connected to the telescopic platform 2 to drive the telescopic platform 2 to rise and fall.

[0034] The double-cage unmanned delivery vehicle of this embodiment has a hollowed-out middle portion of the frame 1 and an opening at the bottom, and a telescopic platform 2 is provided at the opening that can be telescoped toward the side of the frame 1, and is lifted and lowered by a lifting mechanism 3. After the telescopic platform 2 is extended, the cage car 4 is pushed above the telescopic platform 2, and the telescopic platform 2 can automatically pull the cage car 4 into the frame 1 and lift it into place; when unloading the cage car 4, the lifting mechanism 3 drives the telescopic platform 2 to descend so that the cage car 4 contacts the ground, and the telescopic platform 2 drives the cage car 4 to extend toward the side of the frame 1, realizing automatic unloading. The double-cage unmanned delivery vehicle of this embodiment only needs to lift and retract the cage vehicle 4 during loading and unloading, without flipping, which is beneficial to avoiding damage to the express parcels inside the cage vehicle 4; two cage vehicles 4 can be loaded at one time, thereby doubling the transportation capacity of the unmanned delivery vehicle and improving the delivery efficiency; the cage vehicle 4 adopts vertical transportation, which matches the vertical force design of the cage vehicle 4 to avoid affecting the service life of the cage vehicle 4; automatic unloading can be achieved without manual receiving of goods, which is more convenient to use and is beneficial to improving loading and unloading efficiency; a soft canopy 5 is arranged on the top of the frame 1, and when the cage vehicle 4 is at a high height, the soft canopy 5 can be jacked up, so that a relatively high cage vehicle 4 can be loaded, and it has strong adaptability.

[0035] Furthermore, the double-cage unmanned delivery vehicle of this embodiment also includes a side door 6, which is arranged on both sides of the frame 1 relative to the lifting mechanism 3 (the side door 6 is arranged on the right side of the frame 1, and the lifting mechanism 3 is arranged on the left side of the frame 1), and the layout is reasonable to avoid mutual interference. The soft shed 5 cooperates with the side door 6 to effectively prevent the goods inside the frame 1 from getting wet, and at the same time, private transportation can be achieved. Before the telescopic platform 2 extends out of the frame 1, the side door 6 needs to be opened first, and when the telescopic platform 2 is retracted into the frame 1, the side door 6 is closed.

[0036] As a preferred embodiment, the side door 6 can be a double door or a rolling door with a large opening, which is convenient for loading and unloading the cage truck 4 and occupies little space.

[0037] See Figure 4 and Figure 5Further, in this embodiment, the telescopic platform 2 includes a bottom plate 21, a first telescopic plate 22 disposed on the bottom plate 21, and a telescopic driving member 23 for driving the first telescopic plate 22 to move relative to the bottom plate 21, and the bottom plate 21 is connected to the lifting mechanism 3 (specifically, the lifting body 31). When working, the lifting mechanism 3 drives the bottom plate 21 to rise and fall, and the first telescopic plate 22 rises and falls synchronously with the bottom plate 21, and the telescopic driving member 23 drives the first telescopic plate 22 to move relative to the bottom plate 21 to achieve the first stage of telescoping.

[0038] Furthermore, in this embodiment, the telescopic platform 2 further includes a second telescopic plate 24 disposed on the first telescopic plate 22, and the second telescopic plate 24 is connected to the telescopic drive member 23 to move relative to the first telescopic plate 22. Under the action of the telescopic drive member 23, the second telescopic plate 24 moves relative to the first telescopic plate 22 to achieve the second stage of telescopic extension. The two-stage telescopic structure can increase the telescopic stroke, while reducing the overhang of the second telescopic plate 24, improving stability, and sharing the telescopic drive member 23 can simplify the structure and reduce costs.

[0039] Furthermore, in this embodiment, the telescopic driving member 23 is a first motor and is arranged on the first telescopic plate 22. The rotating shaft of the first motor is provided with a driving gear 25 and a driving pulley 20. The bottom plate 21 is provided with a rack 26. The driving gear 25 meshes with the rack 26. The first telescopic plate 22 is provided with a driven pulley 27. The driving pulley 20 and the driven pulley 27 are wound with a synchronous belt 28. The second telescopic plate 24 is connected to the synchronous belt 28 (for example, the synchronous belt 28 is provided with a convex portion 281, and the convex portion 281 is fixedly connected to the second telescopic plate 24 through a threaded fastener). When working, the first motor drives the driving gear 25 and the driving pulley 20 to rotate at the same time. Since the rack 26 is mounted on the bottom plate 21 and remains fixed, the first telescopic plate 22 will move relative to the bottom plate 21. Since the second telescopic plate 22 is arranged on the first telescopic plate 22, the second telescopic plate 24 will move with the first telescopic plate 22. At the same time, the active pulley and the driven pulley 27 drive the synchronous belt 28 to operate, and the synchronous belt 28 can drive the second telescopic plate 24 to move relative to the first telescopic plate 22, so that the moving speed of the second telescopic plate 24 is the sum of the moving speed of the first telescopic plate 22 and the operating speed of the synchronous belt 28, thereby improving the operating efficiency of the second telescopic plate 24, increasing the telescopic stroke, and shortening the time required for the telescopic movement.

[0040] As a preferred embodiment, the first telescopic plate 22 is located in the middle of the bottom plate 21, and the second telescopic plate 24 is located in the middle of the first telescopic plate 22, which has good symmetry and force balance, and is conducive to keeping the telescopic platform 2 in stable operation.

[0041] As a preferred embodiment, the second telescopic plate 24 is a rectangular plate, and a horizontally arranged second motor 291 is provided at the four corners of the rectangular plate, and a locking block 29 is provided on the rotating shaft of the second motor 291. The second motor 291 can drive the locking block 29 to rotate in a vertical plane. When the cage trolley 4 needs to be loaded and unloaded, the second motor 291 drives the locking block 29 to rotate to a horizontal state to avoid interference; when the cage trolley 4 needs to be fixed on the second telescopic plate 24, the second motor 291 drives the locking block 29 to rotate to a vertical state, effectively preventing the cage trolley 4 from accidentally moving on the second telescopic plate 24, and the structure is simple and reliable.

[0042] As a preferred embodiment, two telescopic platforms 2 are provided, and both telescopic platforms 2 are equipped with a lifting mechanism 3. The two telescopic platforms 2 can load two cage vehicles 4, thereby doubling the transportation capacity of the unmanned delivery vehicle, and the two telescopic platforms 2 can be raised and lowered independently without interfering with each other. Of course, in other embodiments, only one lifting mechanism 3 can be provided, but it will result in that the two telescopic platforms 2 can only be raised and lowered synchronously.

[0043] See Figure 6 Furthermore, in this embodiment, the lifting mechanism 3 includes a lifting body 31, a lifting guide rail 32 provided on the frame 1, and a lifting drive 33 for driving the lifting body 31 to move relative to the lifting guide rail 32. The lifting body 31 is connected to the telescopic platform 2 (specifically, the bottom plate 21), and the lifting guide rail 32 is relatively arranged on both sides of the lifting body 31 and is slidably connected to the lifting body 31. Preferably, the lifting drive 33 is an electric push rod. Of course, in other embodiments, it can also be a gear rack pair, a synchronous belt mechanism, etc. When working, the lifting drive 33 drives the lifting body 31 and the telescopic platform 2 to rise and fall as a whole, and the lifting guide rails 32 on both sides provide a guiding effect for the lifting body 31 to ensure a smooth lifting process and avoid deviation.

[0044] Furthermore, in this embodiment, a guide groove 321 is provided on the lifting guide rail 32, and a roller 311 is provided on the lifting body 31. The roller 311 is located in the guide groove 321. The cooperation between the guide groove 321 and the roller 311 can provide a good guiding effect for the lifting body 31 to avoid deviation, and at the same time can reduce the resistance of the lifting movement. The structure is simple and effective.

[0045] Furthermore, a connection frame 34 is provided between the lifting guide rails 32 on both sides, and the lifting drive member 33 is provided in the middle of the connection frame 34 , which has good symmetry and is conducive to achieving smooth lifting of the lifting body 31 .

[0046] See Figure 7 and Figure 8Furthermore, in this embodiment, the frame 1 includes a top connecting frame 11, a side connecting frame 12 and brackets 13 arranged at the lower parts of the two ends of the top connecting frame 11, the upper part of the side connecting frame 12 is connected to the top connecting frame 11, and the two ends of the side connecting frame 12 are connected to the side of the bracket 13 (the telescopic platform 2 extends to the right, and accordingly, the side connecting frame 12 is connected to the left side of the bracket 13, which can maximize the space inside the frame 1 for loading the cage car 4 and will not affect the loading and unloading of the cage car 4), the telescopic platform 2 is located between the brackets 13 at both ends, and the lifting mechanism 3 is arranged on the side connecting frame 12.

[0047] Since the telescopic platform 2 extends to the right, the right sides of the brackets 13 at both ends cannot be connected as one. The connection strength of the brackets 13 at both ends can be improved by the top connecting frame 11 and the side connecting frame 12, thereby improving the overall rigidity of the frame 1. At the same time, the side connecting frame 12 also facilitates the installation of the two lifting mechanisms 3.

[0048] The specific process of the delivery method of the double-cage unmanned delivery vehicle is as follows:

[0049] S1, loading the cage car 4: the lifting drive 33 drives the lifting body 31 and the telescopic platform 2 to descend as a whole until they touch the ground, the frame 1 is lifted up and separated from the ground, and the first motor drives the driving gear 25 and the active pulley 20 to rotate at the same time, the first telescopic plate 22 and the second telescopic plate 24 are extended to the right side of the frame 1, and then the cage car 4 is manually pushed to the top of the second telescopic plate 24, the second motor 291 drives the locking block 29 to rotate to a vertical state, and the cage car 4 is fixed on the second telescopic plate 24, and the first motor drives the driving gear 25 and the active pulley 20 to rotate in the opposite direction at the same time, the first telescopic plate 22, the second telescopic plate 24 and the cage car 4 are pulled back into the frame 1, and the lifting drive 33 drives the lifting body 31, the telescopic platform 2 and the cage car 4 to rise as a whole, so that the cage car 4 is off the ground, and the frame 1 is lowered to touch the ground, and after the telescopic platform 2 rises to the set height, the cage car 4 lifts up the soft roof 5;

[0050] S2, unloading cage car: after driving to the destination, the lifting drive 33 drives the lifting body 31, telescopic platform 2 and cage car 4 to descend as a whole, so that the cage car 4 is out of contact with the ground, the frame 1 is lifted up and separated from the ground, and the first motor drives the driving gear 25 and the active pulley 20 to rotate at the same time, the first telescopic plate 22, the second telescopic plate 24 and the cage car 4 extend to the right side of the frame 1, and the second motor 291 drives the lock block 29 to rotate to a horizontal state, and then the first telescopic plate 22 and the second telescopic plate 24 retract into the frame 1 and separate from the cage car 4, realizing automatic unloading without manual delivery. The lifting mechanism 3 drives the telescopic platform 2 to rise, the frame 1 descends to contact the ground, and the double-cage unmanned delivery vehicle leaves on its own to perform the next task or return to the site.

[0051] The delivery method of the double-cage unmanned delivery vehicle can automatically pull the cage car 4 into the frame 1. When unloading the cage car 4 after arriving at the destination, the lifting mechanism 3 drives the telescopic platform 2 to descend so that the cage car 4 contacts the ground, and the telescopic platform 2 drives the cage car 4 to extend to the side of the frame 1 to achieve automatic unloading. No manual receiving is required, which is very convenient to use and improves the loading and unloading efficiency. It can also load relatively high cage cars 4 and has strong adaptability.

[0052] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A double-cage unmanned delivery vehicle, comprising a frame (1), wherein the frame (1) is hollow in the middle and open at the bottom, and is characterized in that: The top of the frame (1) is provided with a soft canopy (5), the opening is provided with a telescopic platform (2) that is telescopic toward the side of the frame (1), and the frame (1) is provided with a lifting mechanism (3), the lifting mechanism (3) is connected to the telescopic platform (2) and drives the telescopic platform (2) to perform lifting and lowering movements.

2. The double-cage unmanned delivery vehicle according to claim 1 is characterized in that: It also comprises side doors (6), and the side doors (6) are arranged on both sides of the frame (1) opposite to the lifting mechanism (3).

3. The double-cage unmanned delivery vehicle according to claim 2 is characterized in that: The side door (6) is a double door or a rolling door.

4. The double-cage unmanned delivery vehicle according to claim 1 is characterized in that: The telescopic platform (2) comprises a bottom plate (21), a first telescopic plate (22) arranged on the bottom plate (21), and a telescopic driving member (23) for driving the first telescopic plate (22) to move relative to the bottom plate (21); the bottom plate (21) is connected to the lifting mechanism (3).

5. The double-cage unmanned delivery vehicle according to claim 4 is characterized in that: The telescopic platform (2) further comprises a second telescopic plate (24) arranged on the first telescopic plate (22), and the second telescopic plate (24) is connected to the telescopic driving member (23) so as to move relative to the first telescopic plate (22).

6. The double-cage unmanned delivery vehicle according to claim 5 is characterized in that: The telescopic driving member (23) is a first motor and is arranged on the first telescopic plate (22); a driving gear (25) and a driving pulley (20) are arranged on the rotating shaft of the first motor; a rack (26) is arranged on the bottom plate (21); the driving gear (25) is meshed with the rack (26); a driven pulley (27) is arranged on the first telescopic plate (22); a synchronous belt (28) is wound around the driving pulley (20) and the driven pulley (27); and the second telescopic plate (24) is connected to the synchronous belt (28).

7. The double-cage unmanned delivery vehicle according to claim 5 is characterized in that: The second telescopic plate (24) is a rectangular plate, and horizontally arranged second motors (291) are provided at the four corners of the rectangular plate, and a locking block (29) is provided on the rotating shaft of the second motor (291).

8. The double-cage unmanned delivery vehicle according to any one of claims 1 to 7, characterized in that: Two telescopic platforms (2) are provided, and both telescopic platforms (2) are equipped with the lifting mechanism (3).

9. The double-cage unmanned delivery vehicle according to any one of claims 1 to 7, characterized in that: The lifting mechanism (3) comprises a lifting body (31), a lifting guide rail (32) arranged on the frame (1), and a lifting driving member (33) for driving the lifting body (31) to move relative to the lifting guide rail (32); the lifting body (31) is connected to the telescopic platform (2); the lifting guide rail (32) is arranged on both sides of the lifting body (31) and is slidably connected to the lifting body (31).

10. The double-cage unmanned delivery vehicle according to any one of claims 1 to 7, characterized in that: The vehicle frame (1) comprises a top connection frame (11), a side connection frame (12) and brackets (13) arranged at the lower parts of both ends of the top connection frame (11); the upper part of the side connection frame (12) is connected to the top connection frame (11); both ends of the side connection frame (12) are connected to the side of the bracket (13); the telescopic platform (2) is located between the brackets (13) at both ends; and the lifting mechanism (3) is arranged on the side connection frame (12).

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