Telescopic platform for unmanned vehicle

Abstract

The telescopic platform comprises a bottom plate, a first telescopic plate, a second telescopic plate and a telescopic driving part, the first telescopic plate is arranged on the bottom plate, the second telescopic plate is arranged on the first telescopic plate, and the first telescopic plate and the second telescopic plate are both connected with the telescopic driving part. Under the action of the telescopic driving piece, the first telescopic plate moves relative to the bottom plate, the second telescopic plate moves relative to the first telescopic plate, two-stage stretching is achieved, the stretching stroke can be increased, meanwhile, the overhanging amount of the second telescopic plate is reduced, stability is improved, the telescopic driving piece is shared, the structure can be simplified, and cost is reduced. After the telescopic platform extends out, the cage trolley is pushed to the position above the telescopic platform, and the telescopic platform can automatically pull the cage trolley into the frame; when the cage trolley is unloaded, the telescopic platform drives the cage trolley to stretch out towards the side face of the frame, automatic unloading is achieved, manual goods receiving is not needed, using is more convenient, and the loading and unloading efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent vehicles, and in particular to a telescopic platform for unmanned vehicles. Background Art

[0002] Cage carts are unit-sized mobile containerized equipment equipped with several casters for transporting and storing goods. They are a common cargo carrier in logistics, transit, and sorting. They enable rapid unloading, online sorting, and loading of goods, improving express delivery efficiency. During the logistics and transportation process, cage carts not only ensure the safety of materials, but also prevent clutter in sorted goods, saving time and effort during 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 extends the transportation time of express delivery and poses certain safety hazards.

[0004] While there are also solutions on the market that can automatically load and unload cage carts, such as the Chinese patent document with publication number CN 117922408 A, which discloses a courier delivery flipping mechanism and an unmanned delivery vehicle, these devices utilize a movably mounted loading member on the unmanned vehicle body. The movably mounted loading member is driven by the movable member and the connecting member, allowing the loading member to slide forward and backward under the guidance of a guide portion and flip over under the limiting action of the guide portion. By moving the loading member backward and then flipping it backward, the loading member can be positioned vertically, allowing the package to be directly pushed into the loading member. The loading member is then flipped forward and positioned horizontally, and finally moved forward to a predetermined position, completing the automatic loading of the package. 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 high in the cage car to flip over, which can easily cause the express parcels to be crushed under the action of gravity; 2. 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; 3. When unloading, manual labor is required to wait for the goods to be received and the cage car to be pulled out, which is time-consuming and labor-intensive. If the unloading cannot be carried out in time, the utilization rate of the unmanned vehicle will be reduced. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a telescopic platform for an unmanned vehicle which can automatically pull a cage vehicle into or push it out from a vehicle frame, is more convenient to use, and is conducive to improving loading and unloading efficiency.

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

[0007] A telescopic platform for an unmanned vehicle comprises a base plate, a first telescopic plate, a second telescopic plate and a telescopic drive member, wherein the first telescopic plate is arranged on the base plate, the second telescopic plate is arranged on the first telescopic plate, and both the first telescopic plate and the second telescopic plate are connected to the telescopic drive member.

[0008] 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 an active wheel, the bottom plate is provided with a rack, the driving gear is engaged with the rack, the first telescopic plate is provided with a driven wheel, the active wheel and the driven wheel are wound with a transmission member, and the second telescopic plate is connected to the transmission member.

[0009] As a further improvement of the above technical solution: the driving wheel and the driven wheel are both pulleys, and the transmission member is a synchronous belt.

[0010] As a further improvement of the above technical solution: a convex portion is provided on the synchronous belt, and the convex portion is fixedly connected to the second telescopic plate.

[0011] As a further improvement of the above technical solution: the driving wheel and the driven wheel are both sprockets, and the transmission member is a chain.

[0012] As a further improvement of the above technical solution: the first telescopic plate is located in the middle of the bottom plate, and the second telescopic plate is located in the middle of the first telescopic plate.

[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 corners 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: the second telescopic plate is a perforated plate.

[0015] Compared with the prior art, the advantages of the present invention are as follows: the telescopic platform for unmanned vehicles disclosed by the present invention, under the action of the telescopic drive member, the first telescopic plate moves relative to the bottom plate, and the second telescopic plate moves relative to the first telescopic plate, realizing two-stage telescopic extension. The two-stage telescopic structure can increase the telescopic stroke, while reducing the overhang of the second telescopic plate, improving stability, and sharing the telescopic drive member, which can simplify the structure and reduce costs. After the telescopic platform is extended, the cage car is pushed to the top of the telescopic platform, and the telescopic platform can automatically pull the cage car into the frame; when unloading the cage car, 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 eliminates the need for the cage car to be flipped during loading and unloading, which is beneficial to avoid damage to express parcels inside the cage car; the cage car adopts vertical transportation, which matches the vertical force design of the cage car, avoiding affecting the service life of the cage car; it can realize automatic unloading without manual receiving of goods, which is more convenient to use and conducive to improving loading and unloading efficiency.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the telescopic platform for unmanned vehicles of the utility model.

[0018] Figure 2 It is a partially enlarged view of the telescopic platform for the unmanned vehicle of the utility model.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model after the cage truck is loaded.

[0020] The numbers in the figure represent:

[0021] 1. Frame; 20. Driving wheel; 21. Bottom plate; 22. First telescopic plate; 23. Telescopic driving member; 24. Second telescopic plate; 25. Driving gear; 26. Rack; 27. Driven wheel; 28. Transmission member; 29. ​​Lock block; 291. Second motor; 3. Lifting mechanism; 4. Cage car. DETAILED DESCRIPTION

[0022] 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", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0024] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," "connect," "fix," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Figures 1 to 3 An embodiment of a telescopic platform for an unmanned vehicle according to the present invention is shown. The unmanned vehicle includes a frame 1, to which the telescopic platform is fixedly mounted. Due to road traffic regulations, vehicles must drive on the right side of the vehicle. Therefore, in this embodiment, the telescopic platform extends to the right side of the frame 1. A lifting mechanism 3 is provided on the frame 1 for raising and lowering the telescopic platform. Lifting mechanism 3 can, for example, utilize an electric push rod, a hydraulic cylinder, a screw-nut pair, or the like to raise and lower the telescopic platform. These components are currently available and are not described in detail here.

[0027] After the telescopic platform is extended, the cage trolley 4 is pushed above the telescopic platform, which automatically pulls the cage trolley 4 into the vehicle frame 1 and raises it into position. When unloading the cage trolley 4, the lifting mechanism 3 drives the telescopic platform down so that the cage trolley 4 contacts the ground. The telescopic platform then drives the cage trolley 4 out toward the side of the vehicle frame 1, achieving automatic unloading. The telescopic platform for the unmanned vehicle of this embodiment allows the cage trolley 4 to be loaded and unloaded only by lifting and retracting, without the need for flipping, which helps prevent damage to the express parcels inside the cage trolley 4. The cage trolley 4 is transported vertically, matching its vertical load-bearing design, thus minimizing the service life of the cage trolley 4. Automatic unloading is possible, eliminating the need for manual loading and unloading, making it more convenient to use and improving loading and unloading efficiency.

[0028] See Figure 1 and Figure 2In this embodiment, the telescopic platform includes a base plate 21, a first telescopic plate 22 disposed on the base plate 21, a second telescopic plate 24 disposed on the first telescopic plate 22, and a telescopic drive member 23 for driving the first telescopic plate 22 to move relative to the base plate 21 and the second telescopic plate 24 to move relative to the first telescopic plate 22. The base plate 21 is connected to the lifting mechanism 3. During operation, the lifting mechanism 3 drives the base plate 21 up and down, while the first telescopic plate 22, the second telescopic plate 24, and the telescopic drive member 23 rise and fall synchronously with the base plate 21. The telescopic drive member 23 drives the first telescopic plate 22 to move relative to the base plate 21 to achieve a first stage of telescopic extension and simultaneously drives the second telescopic plate 24 to move relative to the first telescopic plate 22 to achieve a second stage of telescopic extension. The two-stage telescopic structure increases the telescopic travel of the telescopic platform while reducing the overhang of the second telescopic plate 24, improving stability. Furthermore, the shared telescopic drive member 23 simplifies the structure and reduces costs.

[0029] Furthermore, in this embodiment, the telescopic drive member 23 is a first motor and is mounted on the first telescopic plate 22. A drive gear 25 and a driving pulley 20 are mounted on the rotating shaft of the first motor. A rack 26 is mounted on the base plate 21, and the drive gear 25 meshes with the rack 26. A driven pulley 27 is mounted on the first telescopic plate 22. A transmission member 28 is wound around the driving pulley 20 and the driven pulley 27, and the second telescopic plate 24 is connected to the transmission member 28. In this embodiment, the driving pulley 20 and the driven pulley 27 are pulleys, and the transmission member 28 is a synchronous belt. During operation, the first motor simultaneously drives the drive gear 25 and the driving pulley 20 to rotate. Since the rack 26 is mounted and held stationary on the base plate 21, the first telescopic plate 22 moves relative to the base plate 21. Because the second telescopic plate 22 is disposed on the first telescopic plate 22, the second telescopic plate 24 moves with the first telescopic plate 22. Simultaneously, the driving wheel 20 and the driven wheel 27 drive the transmission member 28, which in turn drives the second telescopic plate 24 relative to the first telescopic plate 22. This results in a movement speed of the second telescopic plate 24 that is equal to the sum of the movement speed of the first telescopic plate 22 and the operating speed of the transmission member 28. This improves the operating efficiency of the second telescopic plate 24 and shortens the time required for the telescopic movement. Preferably, the synchronous belt 28 is provided with a protrusion 281, which is fixedly connected to the second telescopic plate 24 via a threaded fastener.

[0030] Of course, in other embodiments, the driving wheel and the driven wheel 27 may also be sprockets, and correspondingly, the transmission member 28 may be a chain.

[0031] 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 maintaining stable operation of the telescopic platform.

[0032] In a preferred embodiment, the second telescopic plate 24 is a rectangular plate with horizontally arranged second motors 291 installed at the four corners of the rectangular plate. A locking block 29 is installed 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 or unloaded, the second motor 291 drives the locking block 29 to rotate to a horizontal position to avoid interference. When the cage trolley 4 needs to be fixed to the second telescopic plate 24, the second motor 291 drives the locking block 29 to rotate to a vertical position, effectively preventing the cage trolley 4 from moving on the second telescopic plate 24. This structure is simple and reliable.

[0033] As a preferred embodiment, the second telescopic plate 24 is a perforated plate, which is beneficial to reducing the weight of the second telescopic plate 24 while ensuring its own structural strength.

[0034] The specific process of the delivery method of the unmanned vehicle equipped with the telescopic platform of the utility model is as follows:

[0035] S1. Loading the cage car 4: The lifting mechanism 3 drives the telescopic platform to descend as a whole until it touches the ground. The first motor drives the driving gear 25 and the driving wheel 20 to rotate. The first telescopic plate 22 and the second telescopic plate 24 are extended to the right side of the frame 1. Then the cage car 4 is manually pushed above the second telescopic plate 24. The second motor 291 drives the locking block 29 to rotate to a vertical state, fixing the cage car 4 on the second telescopic plate 24. The first motor simultaneously drives the driving gear 25 and the driving wheel 20 to rotate in the opposite direction. The first telescopic plate 22, the second telescopic plate 24 and the cage car 4 are pulled back into the frame 1. The lifting mechanism 3 drives the telescopic platform and the cage car 4 to rise as a whole, so that the cage car 4 is off the ground.

[0036] S2. Unloading the Cage Cart: After reaching the destination, the lifting mechanism 3 lowers the telescopic platform and cage car 4, freeing the cage car 4 from the ground. The first motor rotates the drive gear 25 and the driving wheel 20, causing the first and second telescopic plates 22, 24, and cage car 4 to extend to the right side of the vehicle frame 1. The second motor 291 rotates the locking block 29 to a horizontal position, and then the first and second telescopic plates 22, 24 retract into the vehicle frame 1, separating from the cage car 4. This completes automatic unloading, eliminating the need for manual handling. The unmanned vehicle then departs to perform its next mission or returns to its destination.

[0037] Since the unmanned vehicle is equipped with the telescopic platform of the present invention, it can automatically pull the cage car 4 into the frame 1. When unloading the cage car 4 after reaching the destination, the lifting mechanism 3 drives the telescopic platform to descend so that the cage car 4 contacts the ground. The telescopic platform drives the cage car 4 to extend to the side of the frame 1, realizing automatic unloading. There is no need for manual receiving of the goods, which is very convenient to use and improves the loading and unloading efficiency.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the present invention, or modify it into equivalent embodiments with equivalent variations. Therefore, any simple modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the scope of protection of the present invention.

Claims

1. A telescopic platform for an unmanned vehicle, characterized by: The invention comprises a base plate (21), a first telescopic plate (22), a second telescopic plate (24) and a telescopic driving member (23), wherein the first telescopic plate (22) is arranged on the base plate (21), the second telescopic plate (24) is arranged on the first telescopic plate (22), the first telescopic plate (22) and the second telescopic plate (24) are both connected to the telescopic driving member (23), 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 wheel (20) are provided on the rotating shaft of the first motor, a rack (26) is provided on the base plate (21), the driving gear (25) is meshed with the rack (26), a driven wheel (27) is provided on the first telescopic plate (22), a transmission member (28) is wound around the driving wheel (20) and the driven wheel (27), and the second telescopic plate (24) is connected to the transmission member (28).

2. The telescopic platform for an unmanned vehicle according to claim 1, characterized in that: The driving wheel (20) and the driven wheel (27) are both pulleys, and the transmission member (28) is a synchronous belt.

3. The telescopic platform for an unmanned vehicle according to claim 2, characterized in that: A convex portion (281) is provided on the synchronous belt, and the convex portion (281) is fixedly connected to the second telescopic plate (24).

4. The telescopic platform for an unmanned vehicle according to claim 1, characterized in that: The driving wheel (20) and the driven wheel (27) are both sprockets, and the transmission member (28) is a chain.

5. The telescopic platform for an unmanned vehicle according to claim 1, characterized in that: 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).

6. The telescopic platform for an unmanned vehicle according to any one of claims 1 to 5, characterized in that: The second telescopic plate (24) is a rectangular plate, and horizontally arranged second motors (291) are provided at the four corner positions of the rectangular plate. A locking block (29) is provided on the rotating shaft of the second motor (291).

7. The telescopic platform for an unmanned vehicle according to any one of claims 1 to 5, characterized in that: The second telescopic plate (24) is a perforated plate.

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