A loading and unloading device

Abstract

The utility model relates to a kind of loading and unloading device, comprising: fixed frame, the top surface of the fixed frame movably is provided with support frame, and movable drive device is arranged between the support frame and the fixed frame;The inside of the support frame is movably provided with first moving frame, and the inside of the first moving frame is movably provided with second moving frame;When each vehicle stops in front of goods carrier each time, the parking position requirement of vehicle can be reduced, the alignment time of vehicle and goods carrier can be reduced, the invalid waiting time in loading and unloading process can be significantly compressed, and the overall efficiency of loading and unloading can be improved.

Description

Technical Field

[0001] This utility model relates to the field of loading and unloading devices, specifically to a loading and unloading device. Background Technology

[0002] Loading and unloading equipment refers to devices used for loading goods onto vehicles. Loading and unloading equipment typically includes cargo-bearing components, facilitating the loading and unloading of goods onto vehicles.

[0003] The existing loading and unloading equipment has the following defects: The system cannot reduce the parking position requirements of vehicles each time they stop in front of the cargo carrier, cannot reduce the alignment time between vehicles and cargo carriers, cannot significantly reduce the invalid waiting time during loading and unloading, and cannot improve the overall efficiency of loading and unloading. It cannot efficiently, completely, or accurately identify the high and low platform conditions of a vehicle; It is impossible to unload each item quickly, smoothly, and accurately onto the vehicle's platform; it is impossible to ensure that each item is unloaded into a reasonable and optimal position when the vehicle's platform is loading it; it is impossible to load more items into the vehicle's platform within the designated space; and it is impossible to improve the loading efficiency of the vehicle's platform. It is impossible to ensure that each item is unloaded quickly, smoothly, and accurately onto the vehicle's platform; it is impossible to ensure that each item is unloaded into a reasonable and optimal position when loading it; it is impossible to load more items into the designated space on the vehicle's platform; and it is impossible to improve the loading efficiency of the vehicle's platform.

[0004] The purpose of this utility model research is to design a loading and unloading device to address the problems existing in the prior art. Utility Model Content

[0005] In view of the problems existing in the prior art, the present invention provides a loading and unloading device that can effectively solve at least one of the problems existing in the prior art.

[0006] The technical solution of this utility model is: A loading and unloading device, comprising: A fixed frame, wherein a support frame is movably mounted on the top surface of the fixed frame, and a movable driving device is provided between the support frame and the fixed frame; A first movable frame is provided on the inner side of the support frame, which moves back and forth. A second movable frame is provided on the inner side of the first movable frame, which moves back and forth. A third movable frame is provided on the inner side of the second movable frame, which moves back and forth. A fourth movable frame is provided on the inner side of the third movable frame, which moves back and forth. A proportional telescopic device is provided between the support frame, the first movable frame, the second movable frame, the third movable frame, and the fourth movable frame. The fourth mobile frame is provided with a support arm at its front end, a cargo carrier is provided at the front end of the support arm, a depth sensor is provided on the top surface of the support arm, and a stabilizing device is provided on the support arm and behind the cargo carrier.

[0007] Furthermore, the movable drive device includes two left and right movable devices, which are respectively disposed in front of and behind the bottom end of the support frame. The left and right movable devices are disposed between the support frame and the fixed frame, and both the left and right movable devices and the left and right end faces of the support frame are provided with up and down movable devices.

[0008] Furthermore, the left and right movable device includes left and right movable frames, which are disposed between the support frame and the fixed frame. The top surface of the fixed frame and the front and rear sides of the left and right movable frames are provided with left and right guide rails. The front and rear end faces of the left and right movable frames are rotatably provided with several movable wheels that cooperate with the left and right guide rails. The left and right movable frames and the fixed frame are provided with left and right telescopic members. The vertical movement device includes a vertical movement frame disposed on the left and right movement frames. A connecting frame is disposed on the support frame and above the vertical movement frame. A vertical telescopic member is disposed between the vertical movement frame and the connecting frame.

[0009] Furthermore, the proportional telescopic device includes two first chain drive mechanisms, which are arranged side-by-side on the first movable frame. The rear end face of the first movable frame is provided with a chain drive component for simultaneously driving the two first chain drive mechanisms to operate. The front of the inner top end face of the support frame is fixedly connected to the chain of the first chain drive mechanism through a first connecting frame. On the second movable frame, two second chain drive mechanisms are arranged side-by-side between the two first chain drive mechanisms. The chain of the first chain drive mechanism is fixedly connected to the rear of the top end face of the second movable frame. The front of the inner top end face of the first movable frame is fixedly connected to the chain of the second chain drive mechanism through a second connecting frame. On the third movable frame, two third chain drive mechanisms are arranged side-by-side between the two second chain drive mechanisms. The chain of the second chain drive mechanism is fixedly connected to the rear of the top end face of the third movable frame. The front of the inner top end face of the second movable frame is fixedly connected to the chain of the third chain drive mechanism through a third connecting frame. The chain of the third chain drive mechanism is fixedly connected to the rear of the top end face of the fourth movable frame.

[0010] Furthermore, each of the support frames has a plurality of first guide wheels that cooperate with the first movable frame on its inner end face; each of the first movable frame has a plurality of second guide wheels that cooperate with the second movable frame on its inner end face; each of the second movable frame has a plurality of third guide wheels that cooperate with the third movable frame on its inner end face; and each of the third movable frame has a plurality of fourth guide wheels that cooperate with the fourth movable frame on its inner end face.

[0011] Furthermore, several stabilizing wheels are provided in front of the bottom end face of both the second and third movable frames.

[0012] Furthermore, the stabilizing device includes two stabilizing supports, which are respectively disposed on the left and right end faces of the bearing arm. The stabilizing supports are located behind the cargo bearing component. A stabilizing platform is disposed below the stabilizing supports. Two stabilizing wheels are disposed on the front and rear sides of the bottom end face of the stabilizing platform. A stabilizing telescopic component passing through the stabilizing support is disposed between the stabilizing platform and the bearing arm. Several guide components are disposed between the stabilizing telescopic component, the stabilizing support, and the stabilizing platform.

[0013] Furthermore, the cargo carrier is a forklift fork.

[0014] Therefore, this utility model provides the following effects and / or advantages: 1) Each time a vehicle stops in front of the cargo carrier, the depth sensor first identifies the rear entrance position of the vehicle. Then, the support frame is driven to move to a predetermined position based on the rear entrance position identified by the depth sensor. This ensures that the cargo carrier is automatically positioned directly behind the rear entrance of the vehicle each time it stops in front of the cargo carrier. This reduces the parking position requirements of the vehicle and the alignment time between the vehicle and the cargo carrier, significantly reduces the invalid waiting time during loading and unloading, and improves the overall efficiency of loading and unloading.

[0015] When the cargo carrier is located directly behind the rear entrance of the vehicle, the first, second, third, and fourth moving frames are driven to move simultaneously away from the support frame. The speed ratio of the first, second, third, and fourth moving frames is 1:2:3:4, until the fourth moving frame moves to the predetermined position on the vehicle. This allows the depth sensor to quickly, smoothly, accurately, and over a long distance enter the vehicle and efficiently, completely, and accurately identify the vehicle's high and low platform conditions when the cargo carrier is located directly behind the rear entrance. The control arm drives the depth sensor into the vehicle to identify the vehicle's high and low platform conditions.

[0016] After the depth sensor identifies the vehicle's high and low platform conditions and the fourth moving frame moves to the initial position, the cargo carrier carries a single cargo several times. Before the cargo carrier carries a single cargo each time, the depth sensor identifies the size of the cargo and compares it with the vehicle's high platform condition. The depth sensor completes the identification of the vehicle's high and low platform conditions each time the fourth moving frame moves to the initial position. When the cargo carrier loads a single item and the depth sensor compares the item size with the vehicle's platform height, the support frame is first driven to a predetermined position. Then, the first, second, third, and fourth moving frames are simultaneously driven to move away from the support frame. The speed ratio of the first, second, third, and fourth moving frames is 1:2:3:4, until the fourth moving frame reaches the predetermined position on the vehicle's platform. This ensures that when the cargo carrier loads a single item and the depth sensor compares the item size with the vehicle's platform height, the cargo carrier moves quickly, smoothly, accurately, and over a long distance to the predetermined position on the vehicle's platform before unloading the item. This allows each item to be unloaded quickly, smoothly, and accurately onto the vehicle's platform, ensuring that each item is unloaded into a reasonable and optimal position. This allows the vehicle's platform to load more items within the predetermined space, improving the loading efficiency of the vehicle's platform.

[0017] When the fourth moving frame moves to the initial position and the vehicle's high platform is loaded with goods, the cargo carrier carries a single cargo several times. Before the cargo carrier carries a single cargo each time, the depth sensor identifies the size of the cargo and compares it with the condition of the vehicle's low platform. The depth sensor completes the identification of the vehicle's low platform condition each time the fourth moving frame moves to the initial position. Each time the cargo carrier loads a single item and the depth sensor compares the item size with the vehicle's platform, the support frame is first driven to a predetermined position. Then, the first, second, third, and fourth moving frames are simultaneously driven to move away from the support frame. The speed ratio of the first, second, third, and fourth moving frames is 1:2:3:4, until the fourth moving frame reaches the predetermined position on the vehicle's platform. This ensures that after the cargo carrier loads a single item and the depth sensor compares the item size with the vehicle's platform, the cargo carrier moves quickly, smoothly, accurately, and over a long distance to the predetermined position on the vehicle's platform before unloading the item. This allows each item to be unloaded quickly, smoothly, and accurately onto the vehicle's platform, ensuring that each item is unloaded into a reasonable and optimal position. This allows the vehicle's platform to load more items within the predetermined space, improving the loading efficiency of the vehicle's platform.

[0018] The stabilizing device is driven to descend before the depth sensor first enters the vehicle's lower platform, so that the stabilizing device cooperates with the vehicle's lower platform when the support arm first enters the vehicle's lower platform to enhance the depth sensor's recognition of the vehicle's high and low platform conditions. The stabilizing device is driven to descend each time the depth sensor compares the size of the cargo with the low platform of the vehicle. This ensures that the stabilizing device works in conjunction with the low platform of the vehicle each time the load-bearing arm enters the low platform, so that the load-bearing arm moves smoothly on the low platform each time. This prevents the load-bearing arm from sagging, getting stuck, or shaking during each movement on the low platform of the vehicle due to the fourth moving frame extending beyond the third moving frame, the third moving frame extending beyond the second moving frame, the second moving frame extending beyond the first moving frame, and the first moving frame extending beyond the support frame. Each time the depth sensor compares the size of the cargo with the height of the vehicle platform, the stabilizing device first descends and then rises after a predetermined time. This ensures that the stabilizing device coordinates with the vehicle's lower platform each time the load-bearing arm enters it, allowing the load-bearing arm to move smoothly on the lower platform. It also ensures that the stabilizing device avoids the vehicle's upper platform each time the cargo carrier moves from the lower platform to the upper platform. Furthermore, it ensures that the stabilizing device coordinates with the vehicle's upper platform each time the load-bearing arm enters it, allowing it to move smoothly on the upper platform. This prevents the load-bearing arm from sagging, jamming, or swaying during its high-altitude movement due to the fourth moving frame extending beyond the third moving frame, the third moving frame extending beyond the second moving frame, the second moving frame extending beyond the first moving frame, and the first moving frame extending beyond the support frame.

[0019] In summary: Each time a vehicle stops in front of the cargo carrier, it reduces the vehicle's parking position requirements, decreases the alignment time between the vehicle and the cargo carrier, significantly reduces ineffective waiting time during loading and unloading, and improves overall loading and unloading efficiency. It can efficiently, completely, and accurately identify the vehicle's high and low platform conditions; it enables each item to be unloaded quickly, smoothly, and accurately onto the vehicle's high platform, ensuring that each item is unloaded to a reasonable and optimal position on the high platform, allowing more items to be loaded within the designated space, thus improving the loading efficiency of the high platform; similarly, it enables each item to be unloaded quickly, smoothly, and accurately onto the vehicle's low platform, ensuring that each item is unloaded to a reasonable and optimal position on the low platform, allowing more items to be loaded within the designated space, thus improving the loading efficiency of the low platform.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0021] It should be understood that the above summary and the following detailed description of the present invention are exemplary and explanatory, and are intended to provide further explanation of the present invention as claimed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 For the corresponding Figure 1 Enlarged view of part A.

[0024] Figure 3 For the corresponding Figure 1 Enlarged view of part B.

[0025] Figure 4 For the corresponding Figure 1 Enlarged view of part C.

[0026] Figure 5 For the corresponding Figure 1 Enlarged view of part D.

[0027] Figure 6 For the corresponding Figure 1 Enlarged view of part E.

[0028] Figure 7 This is a schematic diagram of the structure of the first movable frame, second movable frame, third movable frame, fourth movable frame, second guide wheel, third guide wheel, fourth guide wheel, stabilizing wheel, and chain drive component in this utility model.

[0029] Figure 8 For the corresponding Figure 7 Enlarged view of part F.

[0030] Figure 9 This is a schematic diagram of the support frame and the movable drive device in this utility model.

[0031] Figure 10 For the corresponding Figure 9 Enlarged view of part G.

[0032] Figure 11 This is a structural schematic diagram of the load-bearing arm, cargo-bearing component, stabilizing device, and adjusting device in this utility model.

[0033] Explanation of reference numerals in the attached figures: Fixed frame 1, support frame 2, first movable frame 3, second movable frame 4, third movable frame 5, fourth movable frame 6, load-bearing arm 7, cargo load-bearing component 8, left and right movable frame 10, left and right guide rails 11, movable wheel 12, left and right telescopic component 13, upper and lower movable frame 14, connecting frame 15, upper and lower telescopic component 16, first chain drive mechanism 17, chain drive component 18, first connecting frame 19, second chain drive mechanism 20, second connecting frame 21, third chain drive mechanism 22, third connecting frame 23, first guide wheel 24, second guide wheel 25, third guide wheel 26, fourth guide wheel 27, stabilizing wheel 28, stabilizing bracket 29, stabilizing platform 30, stabilizing wheel 31, stabilizing telescopic component 32, guide component 33, upper and lower guide rails 34, adjusting wheel 35, adjusting telescopic component 36. Detailed Implementation

[0034] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings: refer to Figure 1-11 A loading and unloading device, comprising: A fixed frame 1, wherein a support frame 2 is movably disposed on the top surface of the fixed frame 1, and a movable driving device is disposed between the support frame 2 and the fixed frame 1; A first movable frame 3 is provided on the inner side of the support frame 2, which moves back and forth. A second movable frame 4 is provided on the inner side of the first movable frame 3, which moves back and forth. A third movable frame 5 is provided on the inner side of the second movable frame 4, which moves back and forth. A fourth movable frame 6 is provided on the inner side of the third movable frame 5, which moves back and forth. A proportional telescopic device is provided between the support frame 2, the first movable frame 3, the second movable frame 4, the third movable frame 5, and the fourth movable frame 6. The fourth mobile frame 6 has a support arm 7 at its front end, a cargo carrier 8 at its front end, a depth sensor (not shown) on its top surface, and a stabilizing device on the support arm 7 and behind the cargo carrier 8. An adjustment device is provided between the support arm 7 and the fourth mobile frame 6. The adjustment device is used to cooperate with the cargo carrier 8 to enhance the cargo carrier 8's ability to unload cargo onto the vehicle's high or low platform. The control method for the loading and unloading device includes: when the vehicle is parked in front of the loading and unloading device, performing the following: The control arm 7 drives the depth sensor into the vehicle and identifies the vehicle's high and low platform conditions. When the cargo carrier 8 carries a single cargo and the depth sensor compares the cargo size with the vehicle's platform, the cargo carrier 8 is moved to a predetermined position on the vehicle's platform before the cargo is unloaded onto the vehicle's platform. After the cargo carrier 8 carries a single cargo each time and the depth sensor compares the cargo size with the vehicle's low platform, the cargo carrier 8 moves to a predetermined position on the vehicle's low platform before unloading the cargo onto the vehicle's low platform.

[0035] Each time a vehicle stops in front of the cargo carrier 8, the depth sensor first identifies the rear entrance position of the vehicle, and then the support frame 2 is driven to move to a predetermined position based on the rear entrance position of the vehicle identified by the depth sensor. This ensures that the cargo carrier 8 is automatically positioned directly behind the rear entrance of the vehicle each time it stops in front of the cargo carrier 8. This reduces the parking position requirements of the vehicle and the alignment time between the vehicle and the cargo carrier 8, significantly compresses the invalid waiting time in the loading and unloading process, and improves the overall efficiency of loading and unloading. When the cargo carrier 8 is located directly behind the rear entrance of the vehicle, the first moving frame 3, the second moving frame 4, the third moving frame 5, and the fourth moving frame 6 are driven to move simultaneously away from the support frame 2. The moving speed ratio of the first moving frame 3, the second moving frame 4, the third moving frame 5, and the fourth moving frame 6 is 1:2:3:4, until the fourth moving frame 6 moves to the predetermined position on the vehicle. This allows the depth sensor to quickly, smoothly, accurately, and over a long distance enter the vehicle and efficiently, completely, and accurately identify the vehicle's high and low platform conditions when the cargo carrier 8 is located directly behind the rear entrance of the vehicle. The control arm 7 drives the depth sensor into the vehicle to identify the vehicle's high and low platform conditions. After the depth sensor identifies the high and low platform conditions of the vehicle and the fourth moving frame 6 moves to the initial position, the cargo carrier 8 carries a single cargo several times. Before the cargo carrier 8 carries a single cargo each time, the depth sensor identifies the size of the cargo and compares it with the high platform condition of the vehicle. The depth sensor completes the identification of the high and low platform conditions of the vehicle each time the fourth moving frame 6 moves to the initial position. When the cargo carrier 8 carries a single cargo and the depth sensor compares the cargo size with the vehicle's platform, the support frame 2 is driven to move to a predetermined position. Then, the first moving frame 3, the second moving frame 4, the third moving frame 5, and the fourth moving frame 6 are driven to move away from the support frame 2 simultaneously. The ratio of the moving speeds of the first moving frame 3, the second moving frame 4, the third moving frame 5, and the fourth moving frame 6 is 1:2:3:4, until the fourth moving frame 6 moves to the predetermined position on the vehicle's platform. This ensures that when the cargo carrier 8 carries a single cargo and the depth sensor compares the cargo size with the vehicle's platform, the cargo carrier 8 moves quickly, smoothly, accurately, and over a long distance to the predetermined position on the vehicle's platform before unloading the cargo onto the platform. This allows each cargo to be unloaded quickly, smoothly, and accurately onto the vehicle's platform, ensuring that each cargo is unloaded into a reasonable and optimal position when loading. This allows the vehicle's platform to load more cargo within the predetermined space, improving the loading efficiency of the vehicle's platform. When the fourth moving frame 6 moves to the initial position and the vehicle's high platform is loaded with goods, the cargo carrier 8 carries a single cargo several times. Before each time the cargo carrier 8 carries a single cargo, the depth sensor identifies the size of the cargo and compares it with the condition of the vehicle's low platform. The depth sensor completes the identification of the vehicle's low platform condition each time the fourth moving frame 6 moves to the initial position. When the cargo carrier 8 carries a single cargo and the depth sensor compares the cargo size with the vehicle's low platform, the support frame 2 is first driven to move to a predetermined position. Then, the first moving frame 3, the second moving frame 4, the third moving frame 5, and the fourth moving frame 6 are simultaneously driven to move away from the support frame 2. The ratio of the moving speeds of the first moving frame 3, the second moving frame 4, the third moving frame 5, and the fourth moving frame 6 is 1:2:3:4, until the fourth moving frame 6 moves to the predetermined position on the vehicle's low platform. This allows the cargo carrier 8 to move quickly, smoothly, accurately, and over a long distance to the predetermined position on the vehicle's low platform after each cargo carrier 8 carries a single cargo and the depth sensor compares the cargo size with the vehicle's low platform. The cargo is then unloaded onto the vehicle's low platform, ensuring that each cargo is unloaded quickly, smoothly, and accurately onto the vehicle's low platform. This allows the vehicle's low platform to unload cargo into a reasonable and optimal position when loading each cargo, enabling the vehicle's low platform to load more cargo within the predetermined space and improving the loading efficiency of the vehicle's low platform. The stabilizing device is driven to descend before the depth sensor first enters the vehicle's low platform, so that when the support arm 7 first enters the vehicle's low platform, the stabilizing device cooperates with the vehicle's low platform to enhance the depth sensor's recognition of the vehicle's high platform and low platform conditions. The stabilizing device is driven to descend each time the depth sensor compares the size of the cargo with the low platform of the vehicle. This ensures that the stabilizing device cooperates with the low platform of the vehicle each time the load-bearing arm 7 enters the low platform of the vehicle, so that the load-bearing arm 7 moves smoothly on the low platform of the vehicle each time. This prevents the load-bearing arm 7 from sagging, getting stuck, or shaking during each movement on the low platform of the vehicle due to the fourth moving frame 6 extending beyond the third moving frame 5, the third moving frame 5 extending beyond the second moving frame 4, the second moving frame 4 extending beyond the first moving frame 3, and the first moving frame 3 extending beyond the support frame 2. Each time the depth sensor compares the size of the cargo with the height of the vehicle, the stabilizing device is driven to descend first, and then driven to rise after a predetermined time. This ensures that the stabilizing device cooperates with the vehicle's low platform each time the load-bearing arm 7 enters the vehicle's low platform, allowing the load-bearing arm 7 to move smoothly on the vehicle's low platform each time. This also ensures that the stabilizing device avoids the vehicle's high platform each time the cargo carrier 8 enters the vehicle's high platform each time. After the load-bearing arm 7 enters the vehicle's high platform each time, the stabilizing device cooperates with the vehicle's high platform, allowing the load-bearing arm 7 to move smoothly on the vehicle's high platform each time. This prevents the load-bearing arm 7 from sagging, jamming, or shaking during each high movement of the vehicle due to the fourth moving frame 6 extending beyond the third moving frame 5, the third moving frame 5 extending beyond the second moving frame 4, the second moving frame 4 extending beyond the first moving frame 3, and the first moving frame 3 extending beyond the support frame 2. The active drive device is used to drive the support frame 2 to move, and the proportional telescopic device is used to drive the first moving frame 3, the second moving frame 4, the third moving frame 5, and the fourth moving frame 6 to move simultaneously.

[0036] The movable drive device includes two left and right movable devices, which are respectively located in front of and behind the bottom end of the support frame 2. The left and right movable devices are located between the support frame 2 and the fixed frame 1. Both the left and right movable devices and the left and right end faces of the support frame 2 are provided with up and down movable devices.

[0037] The left and right movable device includes a left and right movable frame 10, which is disposed between the support frame 2 and the fixed frame 1. The top surface of the fixed frame 1 and the front and rear sides of the left and right movable frame 10 are provided with left and right guide rails 11. The front and rear end faces of the left and right movable frame 10 are rotatably provided with several movable wheels 12 that cooperate with the left and right guide rails 11. A left and right telescopic member 13 is provided between the left and right movable frame 10 and the fixed frame 1. The vertical movement device includes a vertical movement frame 14, which is mounted on the left and right movement frames 10. A connecting frame 15 is mounted on the support frame 2 and located above the vertical movement frame 14. A vertical telescopic member 16 is provided between the vertical movement frame 14 and the connecting frame 15.

[0038] The proportional telescopic device includes two first chain drive mechanisms 17, which are arranged side-by-side on the first movable frame 3. A chain drive component 18 for simultaneously driving the two first chain drive mechanisms 17 is provided on the rear end face of the first movable frame 3. The inner top face of the support frame 2 is fixedly connected to the chain of the first chain drive mechanism 17 via a first connecting frame 19. Two second chain drive mechanisms 20 are arranged side-by-side on the second movable frame 4 between the two first chain drive mechanisms 17. The chains of the first chain drive mechanisms 17 and the second movable frame 20 are connected side-by-side. The top surface of the movable frame 4 is fixedly connected to the rear. The inner top surface of the first movable frame 3 is fixedly connected to the chain of the second chain drive mechanism 20 through the second connecting frame 21. The third movable frame 5 is provided with two third chain drive mechanisms 22 arranged side by side between the two second chain drive mechanisms 20. The chain of the second chain drive mechanism 20 is fixedly connected to the rear of the top surface of the third movable frame 5. The inner top surface of the second movable frame 4 is fixedly connected to the chain of the third chain drive mechanism 22 through the third connecting frame 23. The chain of the third chain drive mechanism 22 is fixedly connected to the rear of the top surface of the fourth movable frame 6.

[0039] Each of the support frames 2 has a plurality of first guide wheels 24 that cooperate with the first movable frame 3 on its inner end face. Each of the first movable frame 3 has a plurality of second guide wheels 25 that cooperate with the second movable frame 4 on its inner end face. Each of the second movable frame 4 has a plurality of third guide wheels 26 that cooperate with the third movable frame 5 on its inner end face. Each of the third movable frame 5 has a plurality of fourth guide wheels 27 that cooperate with the fourth movable frame 6 on its inner end face.

[0040] Several stabilizing wheels 28 are provided in front of the bottom end face of the second movable frame 4 and the bottom end face of the third movable frame 5.

[0041] The stabilizing device includes two stabilizing supports 29, which are respectively disposed on the left and right end faces of the bearing arm 7. The stabilizing supports 29 are located behind the cargo bearing component 8. A stabilizing platform 30 is disposed below the stabilizing supports 29. Two stabilizing wheels 31 are disposed on the front and rear sides of the bottom end face of the stabilizing platform 30. A stabilizing telescopic component 32 is disposed between the stabilizing platform 30 and the bearing arm 7, passing through the stabilizing supports 29. Several guide components 33 are disposed between the stabilizing telescopic component 32, the stabilizing supports 29, and the stabilizing platform 30.

[0042] The adjustment device includes two upper and lower guide rails 34, which are disposed on the left and right sides of the rear end face of the support arm 7. The front end face of the fourth movable frame 6 is rotatably provided with several adjusting wheels 35 that cooperate with the upper and lower guide rails 34. Two adjusting telescopic members 36 are respectively disposed on the left and right end faces of the fourth movable frame 6. The telescopic end of the adjusting telescopic member 36 is hinged above the rear end face of the support arm 7 and located on the outside of the fourth movable frame 6. The fixed end of the adjusting telescopic member 36 is hinged to the fourth movable frame 6.

[0043] The cargo carrier 8 is a forklift fork.

[0044] The cargo carrier 8 has the functions of tilting forward, tilting backward, moving forward and backward, moving left and right, and pushing cargo off the forks, which enhances the cargo carrier 8's ability to unload cargo onto the vehicle's high or low platform. A counterweight is provided on the top surface of the support frame 2.

[0045] It should be noted that any reference signs placed between parentheses in the claims should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. This invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0046] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A loading and unloading device, characterized in that: include: A fixed frame, wherein a support frame is movably mounted on the top surface of the fixed frame, and a movable driving device is provided between the support frame and the fixed frame; A first movable frame is provided on the inner side of the support frame, which moves back and forth. A second movable frame is provided on the inner side of the first movable frame, which moves back and forth. A third movable frame is provided on the inner side of the second movable frame, which moves back and forth. A fourth movable frame is provided on the inner side of the third movable frame, which moves back and forth. A proportional telescopic device is provided between the support frame, the first movable frame, the second movable frame, the third movable frame, and the fourth movable frame. The fourth mobile frame is provided with a support arm at its front end, a cargo carrier is provided at the front end of the support arm, a depth sensor is provided on the top surface of the support arm, and a stabilizing device is provided on the support arm and behind the cargo carrier.

2. The loading and unloading device according to claim 1, characterized in that: The movable drive device includes two left and right movable devices, which are respectively located in front of and behind the bottom end of the support frame. The left and right movable devices are located between the support frame and the fixed frame. Both the left and right movable devices and the left and right end faces of the support frame are provided with up and down movable devices.

3. The loading and unloading device according to claim 2, characterized in that: The left and right movable device includes left and right movable frames, which are disposed between the support frame and the fixed frame. The top surface of the fixed frame and the front and rear sides of the left and right movable frames are provided with left and right guide rails. The front and rear end faces of the left and right movable frames are rotatably provided with several movable wheels that cooperate with the left and right guide rails. The left and right movable frames and the fixed frame are provided with left and right telescopic members. The vertical movement device includes a vertical movement frame disposed on the left and right movement frames. A connecting frame is disposed on the support frame and above the vertical movement frame. A vertical telescopic member is disposed between the vertical movement frame and the connecting frame.

4. The loading and unloading device according to claim 1, characterized in that: The proportional telescopic device includes two first chain drive mechanisms, which are arranged side-by-side on the first movable frame. The rear end face of the first movable frame is provided with a chain drive component for simultaneously driving the two first chain drive mechanisms. The front of the inner top surface of the support frame is fixedly connected to the chain of the first chain drive mechanism via a first connecting frame. On the second movable frame, located between the two first chain drive mechanisms, two second chain drive mechanisms are arranged side-by-side. The chain of the first chain drive mechanism is fixedly connected to the rear of the top surface of the second movable frame. The front of the inner top surface of the first movable frame is fixedly connected to the chain of the second chain drive mechanism via a second connecting frame. On the third movable frame, located between the two second chain drive mechanisms, two third chain drive mechanisms are arranged side-by-side. The chain of the second chain drive mechanism is fixedly connected to the rear of the top surface of the third movable frame. The front of the inner top surface of the second movable frame is fixedly connected to the chain of the third chain drive mechanism via a third connecting frame. The chain of the third chain drive mechanism is fixedly connected to the rear of the top surface of the fourth movable frame.

5. A loading and unloading device according to claim 4, characterized in that: Each of the support frames has a plurality of first guide wheels that cooperate with the first movable frame on its inner end face. Each of the first movable frames has a plurality of second guide wheels that cooperate with the second movable frame on its inner end face. Each of the second movable frames has a plurality of third guide wheels that cooperate with the third movable frame on its inner end face. Each of the third movable frames has a plurality of fourth guide wheels that cooperate with the fourth movable frame on its inner end face.

6. The loading and unloading device according to claim 1, characterized in that: Several stabilizing wheels are provided in front of the bottom end face of the second movable frame and the bottom end face of the third movable frame.

7. The loading and unloading device according to claim 1, characterized in that: The stabilizing device includes two stabilizing supports, which are respectively disposed on the left and right end faces of the bearing arm. The stabilizing supports are located behind the cargo bearing component. A stabilizing platform is disposed below the stabilizing supports. Two stabilizing wheels are disposed on the front and rear sides of the bottom end face of the stabilizing platform. A stabilizing telescopic component is disposed between the stabilizing platform and the bearing arm, passing through the stabilizing supports. Several guide components are disposed between the stabilizing telescopic component, the stabilizing supports, and the stabilizing platform.

8. A loading and unloading device according to claim 1, characterized in that: The cargo carrier is a forklift fork.

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