AGV jacking device and AGV

Abstract

The utility model discloses an AGV jacking device and an AGV, the AGV jacking device is arranged on a frame of the AGV, the AGV jacking device comprises a plurality of jacking mechanisms separately arranged on the frame, and a control unit arranged in the frame; each jacking mechanism comprises an oil cylinder lifting assembly arranged on the frame and a supporting assembly arranged beside the oil cylinder lifting assembly and fixed to the frame. The control unit controls the oil cylinder lifting assemblies to ascend and descend, and when the oil cylinder lifting assemblies descend to the lowest position, the highest points of the oil cylinder lifting assemblies are lower than the highest points of the supporting assemblies. According to the utility model, in the process of jacking, taking and placing the articles, the article supporting stability is better, the structure of a lifting part is simplified, the articles can be placed on the supporting component in the process of moving the AGV on the ground, so that the oil cylinder lifting component is prevented from being stressed, and the service life of the oil cylinder lifting component is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of AGV equipment technology, and in particular to an AGV lifting device and an AGV. Background Technology

[0002] AGV (Automated Guided Vehicles), also known as unmanned transport vehicles, have automatic navigation functions and are mainly used for the automatic handling of goods in the warehousing and logistics industry or factories.

[0003] AGVs need to retrieve and place items from shelves during transport. AGVs are typically equipped with a lifting device on top for this purpose. Existing AGV lifting devices are generally separate lifting structures located in the middle of the AGV's roof. A lifting plate is installed on top of this structure to support the items. Furthermore, existing lifting devices generally use electric push rods or X-shaped crossbar structures. During overload transport, the items remain pressed against the lifting structure. Such AGV lifting devices have the following drawbacks:

[0004] 1. When a separate, integrated lifting structure comes into contact with an object, the object has few supporting points and is not stable enough.

[0005] 2. The electric push rod or X-shaped cross rod structure is relatively complex.

[0006] 3. During the handling and moving process, the items are constantly pressed on the lifting structure, which puts constant stress on the lifting structure and can easily damage it.

[0007] Therefore, existing technologies need to be improved. Utility Model Content

[0008] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an AGV lifting device, which aims to improve the stability of the support of items during the lifting and loading process, simplify the structure of the lifting part, and further, allow the AGV to place items on the support component during ground movement, thereby avoiding stress on the hydraulic cylinder lifting component and improving the service life of the hydraulic cylinder lifting component.

[0009] To achieve the above objectives, this utility model discloses an AGV lifting device, which is installed on the frame of an AGV. The AGV lifting device includes multiple lifting mechanisms separately installed on the frame and a control unit installed inside the frame.

[0010] Each of the lifting mechanisms includes a hydraulic cylinder lifting assembly mounted on the vehicle frame and a support assembly mounted next to the hydraulic cylinder lifting assembly and fixed to the vehicle frame;

[0011] The control unit controls the raising and lowering of multiple hydraulic cylinder lifting assemblies. When the hydraulic cylinder lifting assembly is lowered to its lowest position, the highest point of the hydraulic cylinder lifting assembly is lower than the highest point of the support assembly.

[0012] In some embodiments, the hydraulic cylinder lifting assembly includes:

[0013] The cylinder flange is fixed to the vehicle frame;

[0014] The lifting cylinder is fixed to the cylinder body flange;

[0015] The lifting rod is telescopically mounted on the lifting cylinder;

[0016] The lifting platform is located at the extended end of the lifting rod.

[0017] In some embodiments, the hydraulic cylinder lifting assembly further includes:

[0018] The guide bearing is fixed on the cylinder flange;

[0019] A guide shaft passes through the guide bearing and can move up and down relative to the guide bearing. The protruding end of the guide shaft is connected to the lifting platform.

[0020] In some embodiments, the hydraulic cylinder lifting assembly further includes a positioning pin disposed on the lifting platform.

[0021] In some embodiments, the hydraulic cylinder lifting assembly further includes a lifting position detection sensor disposed on the cylinder flange.

[0022] In some embodiments, the support component includes:

[0023] A support arm is located adjacent to the cylinder flange and fixed to the vehicle frame;

[0024] The support platform is fixed to the upper end of the support arm.

[0025] In some embodiments, the support assembly further includes a support block disposed on the support platform.

[0026] In some embodiments, the support assembly further includes an anti-slip pad disposed on the support platform.

[0027] In some embodiments, the control unit includes a control circuit, an oil pump, and a hydraulic unit disposed within the vehicle frame. The hydraulic unit includes a hydraulic pipe connected to the lifting cylinder. The control unit can control the lifting assembly of each cylinder to lift and lower independently.

[0028] This utility model also discloses an AGV, which includes the aforementioned AGV lifting device and a vehicle frame, wherein the AGV lifting device is disposed on the top of the vehicle frame.

[0029] It should be understood that, within the scope of this utility model, the above-mentioned technical features of this utility model and the technical features specifically described below (such as embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described in detail here.

[0030] The beneficial effects of this utility model are:

[0031] 1. Multiple lifting mechanisms are installed on the frame, and each lifting mechanism can support the item independently. This provides multiple support points on the bottom of the item during the lifting process, which is equivalent to higher stability than existing technologies.

[0032] 2. The hydraulic cylinder lifting assembly is used as the lifting structure, which is simple and easy to implement.

[0033] 3. During the AGV's transfer and movement, items can be placed on the support components, while the hydraulic cylinder lifting components are not subjected to force during the AGV's transfer and movement, which can extend the service life of the hydraulic cylinder lifting components. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of an AGV equipped with an AGV lifting device according to this utility model.

[0036] Figure 2 for Figure 1 A schematic diagram of the structure after the outer shell is removed.

[0037] Figure 3 This is a schematic diagram of the hydraulic cylinder lifting assembly in the AGV lifting device when it is lowered to its lowest position.

[0038] Figure 4 This is a schematic diagram of the composition of one of the hydraulic cylinder lifting components and the support component in the AGV lifting device.

[0039] Figure 5 This is a schematic diagram of the lifting rod in the hydraulic cylinder lifting assembly being pushed upwards.

[0040] Figure 6This is a schematic diagram showing the state in which one of the hydraulic cylinder lifting components in the AGV lifting device is raised above the support component.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100-Lifting device, 10-Lifting mechanism, 20-Control unit, 21-Hydraulic pipe, 30-Cylinder lifting assembly, 31-Cylinder flange, 32-Lifting cylinder, 33-Lifting rod, 34-Lifting platform, 35-Guide bearing, 36-Guide shaft, 37-Positioning pin, 38-Lifting position detection sensor, 40-Support assembly, 41-Support arm, 42-Support platform, 43-Supporting rubber block, 44-Anti-slip mat, 200-Frame, 300-AGV. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0045] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0046] Please refer to Figures 1 to 3 This utility model proposes an AGV lifting device 100, which is installed on the frame 200 of the AGV 300.

[0047] The AGV lifting device 100 includes multiple lifting mechanisms 10 separately arranged on the vehicle frame 200, and a control unit 20 disposed within the vehicle frame 200. For example... Figure 1 , 2 As shown, the AGV300 of this embodiment has a frame 200, and a lifting mechanism 10 is provided at each of the four corners of the top of the frame 200. In this way, during the lifting process, the contact position between the item and the AGV lifting device 100 of this application are four independent support points to ensure the stability of the support.

[0048] In the lifting device 100 of this utility model, each of the lifting mechanisms 10 includes a hydraulic cylinder lifting assembly 30 disposed on the frame 200 and a support assembly 40 disposed next to the hydraulic cylinder lifting assembly 30 and fixed on the frame 200.

[0049] like Figure 2 As shown, the control unit 20 of this embodiment includes a control circuit (not shown), an oil pump (not shown), and a hydraulic unit disposed in the frame 200. The hydraulic unit includes a hydraulic pipe 21, and each cylinder lifting assembly 30 of the lifting mechanism 10 is connected to the hydraulic pipe 21.

[0050] In this embodiment, the control unit 20 controls the lifting and lowering of multiple hydraulic cylinder lifting assemblies 30. Each hydraulic cylinder lifting assembly 30 has a rod that extends or retracts within the cylinder under hydraulic pressure. When the AGV 300 retrieves an item, it moves to the shelf and is positioned below the item. Then, the rod within the hydraulic cylinder lifting assembly 30 extends upward, lifting the item and disengaging it from the shelf. The AGV 300 then moves to remove the item from the shelf, thus completing the item retrieval process. In this embodiment, the lifting mechanism 10 uses a hydraulic cylinder lifting assembly 30, i.e., a hydraulic lifting mechanism, which is simpler and easier to implement compared to existing lifting mechanisms.

[0051] like Figure 3 As shown, the hydraulic cylinder lifting assembly 30 has a highest point A, and the support assembly 40 has a highest point B. When the control unit 20 controls the hydraulic cylinder lifting assembly 30 to descend to its lowest position, the highest point A of the hydraulic cylinder lifting assembly 30 is lower than the highest point B of the support assembly 40. Thus, when the AGV 300 uses the lifting device 100 of this invention to remove items from the shelf and prepare to transfer them to another location, the hydraulic cylinder lifting assembly 30 descends first, causing the internal rods to retract. When the internal rods of the hydraulic cylinder lifting assembly 30 descend to their lowest position, due to the highest point of the hydraulic cylinder lifting assembly 30... If the high point A is lower than the highest point B of the support component 40, the item initially held in place by the hydraulic cylinder lifting component 30 will be held in place by the support component 40, and the hydraulic cylinder lifting component 30 will no longer be subjected to pressure from the item. Thus, during the subsequent movement and transfer of items by the AGV300, compared to the prior art where the item is constantly held in place during the transfer process, the hydraulic cylinder lifting component 30 of this invention is not subjected to the force of the item. The hydraulic cylinder lifting component 30 is only subjected to the pressure of the item when picking up and placing it, and is not subjected to the pressure of the item during the transfer process. This can greatly extend the service life of the hydraulic cylinder lifting component 30.

[0052] Specifically, such as Figure 4 and Figure 5As shown, the hydraulic cylinder lifting assembly 30 includes a cylinder flange 31 fixed to the vehicle frame 200, and a lifting cylinder 32 fixed to the cylinder flange 31. In this embodiment, the lifting cylinder 32 passes through the cylinder flange 31 and is welded to the cylinder flange 31. The hydraulic pipe 21 in the hydraulic unit is connected to the lifting cylinder 32, and the connection between the hydraulic pipe 21 and each lifting cylinder 32 is divided into an inlet pipe and a return pipe.

[0053] It also includes a lifting rod 33, which is telescopically mounted on the lifting cylinder 32, and a lifting platform 34, which is located at the extended end of the lifting rod 33. The lifting platform 34 is used to lift the item to be picked up or placed, while the lifting rod 33 extends or retracts within the lifting cylinder 32. Figure 5 The image shows the lifting rod 33 extending out of the lifting cylinder 32, causing the lifting platform 34 to contact the bottom of the item and lift it up.

[0054] Preferably, the hydraulic cylinder lifting assembly 30 further includes: a guide bearing 35 fixed on the cylinder flange 31; and a guide shaft 36 passing through the guide bearing 35 and movable up and down relative to the guide bearing 35, with the protruding end of the guide shaft 36 connected to the lifting platform 34. Thus, when the lifting rod 33 moves the lifting platform 34 up and down, the guide shaft 36 also moves up and down relative to the guide bearing 35, providing support and guidance for the lifting platform 34, allowing it to rise and fall smoothly. Furthermore, each hydraulic cylinder lifting assembly 30 includes two sets of guide bearings 35 and guide shafts 36, with the two guide shafts 36 symmetrically arranged on both sides of the lifting rod 33, together with the lifting rod 33, to support the lifting platform 34, thus making the supporting force on the lifting platform 34 more balanced.

[0055] Preferably, the hydraulic cylinder lifting assembly 30 in this embodiment also includes a positioning pin 37 disposed on the lifting platform 34, which positions the item when it is picked up or placed.

[0056] Preferably, the hydraulic cylinder lifting assembly 30 of this embodiment further includes a lifting position detection sensor 38 disposed on the cylinder flange 31. The lifting position detection sensor 38 facilitates the control of the lifting stroke of the lifting rod 33 inside the hydraulic cylinder lifting assembly 30. The lifting position detection sensor 38 is electrically connected to the control circuit in the control unit 20.

[0057] Please continue to refer to this. Figure 4 , Figure 6The support assembly 40 in this embodiment includes: a support arm 41 adjacent to the cylinder flange 31 and fixed to the frame 200; and a support platform 42 fixed to the upper end of the support arm 41. The support platform 42 is used to support items during the transfer process. Specifically, when the AGV 300 takes out an item and is ready to transfer it, and after the lifting rod 33 of the hydraulic cylinder lifting assembly 30 is completely retracted, the item supported by the lifting platform 34 falls onto the support platform 42, so that the support platform 42 holds the item, while the lifting platform 34 is lower than the support platform 42 so that the lifting platform 34 is no longer under the pressure of the item. In this way, the lifting rod 33 is also not under the pressure of the item, which can effectively protect the lifting rod 33 and the lifting cylinder 32, and improve the service life of the hydraulic cylinder and rod.

[0058] Preferably, the support assembly 40 further includes a support block 43 disposed on the support surface 42. The support block 43 is elastic, can be compressed by the item, has a cushioning effect, and prevents the item from making hard contact with the support surface 42, thus protecting the item.

[0059] Preferably, the support assembly 40 further includes an anti-slip pad 44 disposed on the support platform 42. The anti-slip pad 44 can increase the friction with the item to prevent the item from sliding during transportation, and at the same time, the anti-slip pad 44 can also prevent the item from making hard contact with the support platform 42.

[0060] Preferably, the control unit 20 of the AGV lifting device 100 of this utility model can control the lifting of each of the hydraulic cylinder lifting components 30 individually. In this way, the extension and retraction height of the lifting rods 33 of the multiple hydraulic cylinder lifting components 30 of the AGV lifting device 100 of this utility model can be controlled individually to accommodate the picking and placing of items with uneven bottom surfaces.

[0061] This utility model also discloses an AGV300, such as Figure 1 and Figure 2 As shown, the AGV 300 includes the aforementioned AGV lifting device 100 and a vehicle frame 200, with the AGV lifting device 100 disposed on top of the vehicle frame 200. Since the AGV 300 of this embodiment has the aforementioned AGV lifting device 100, it possesses the beneficial effects and functions of the aforementioned AGV lifting device 100, which will not be elaborated upon here.

[0062] The AGV lifting device 100 and AGV 300 of this invention feature multiple independent lifting mechanisms 10 installed on the top of the frame 200. Each lifting mechanism 10 includes a hydraulic cylinder lifting assembly 30 and a support assembly 40. When picking up or placing items, the hydraulic cylinder lifting assembly 30 lifts or lowers the items, while the support assembly 40 supports the items during AGV movement and transfer, thus protecting the hydraulic cylinder lifting assembly 30. Furthermore, the multiple lifting mechanisms 10 in the AGV lifting device 100 provide multiple support points for the items, ensuring stability during picking up, placing, and transferring.

[0063] The above description is merely an example to clearly illustrate the present utility model and is not intended to limit the patent scope of the present utility model. It is impossible to exhaustively list all the embodiments here. All equivalent structural transformations made using the content of the technical solution of the present utility model under the concept of the present utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An AGV lifting device, mounted on the frame of an AGV, characterized in that, The AGV lifting device includes multiple lifting mechanisms separately arranged on the vehicle frame and a control unit arranged inside the vehicle frame; Each of the lifting mechanisms includes a hydraulic cylinder lifting assembly mounted on the vehicle frame and a support assembly mounted next to the hydraulic cylinder lifting assembly and fixed to the vehicle frame; The control unit controls the raising and lowering of multiple hydraulic cylinder lifting assemblies. When the hydraulic cylinder lifting assembly is lowered to its lowest position, the highest point of the hydraulic cylinder lifting assembly is lower than the highest point of the support assembly.

2. The AGV lifting device according to claim 1, characterized in that, The hydraulic cylinder lifting assembly includes: The cylinder flange is fixed to the vehicle frame; The lifting cylinder is fixed to the cylinder body flange; The lifting rod is telescopically mounted on the lifting cylinder; The lifting platform is located at the extended end of the lifting rod.

3. The AGV lifting device according to claim 2, characterized in that, The hydraulic cylinder lifting assembly also includes: The guide bearing is fixed on the cylinder flange; A guide shaft passes through the guide bearing and can move up and down relative to the guide bearing. The protruding end of the guide shaft is connected to the lifting platform.

4. The AGV lifting device according to claim 2, characterized in that, The hydraulic cylinder lifting assembly also includes a positioning pin disposed on the lifting platform.

5. The AGV lifting device according to claim 2, characterized in that, The hydraulic cylinder lifting assembly also includes a lifting position detection sensor mounted on the cylinder flange.

6. The AGV lifting device according to claim 2, characterized in that, The support components include: A support arm is located adjacent to the cylinder flange and fixed to the vehicle frame; The support platform is fixed to the upper end of the support arm.

7. The AGV lifting device according to claim 6, characterized in that, The support assembly also includes a support block disposed on the support platform.

8. The AGV lifting device according to claim 6, characterized in that, The support assembly also includes an anti-slip pad disposed on the support platform.

9. The AGV lifting device according to claim 2, characterized in that, The control unit includes a control circuit, an oil pump, and a hydraulic unit installed in the vehicle frame. The hydraulic unit includes hydraulic pipes connected to the lifting cylinders. The control unit can control the lifting assembly of each cylinder to lift and lower independently.

10. An AGV, characterized in that, The device includes the AGV lifting device as described in any one of claims 1-9, and also includes a frame, wherein the AGV lifting device is disposed on top of the frame.

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