Lifting device and carrier vehicle

Abstract

The present invention relates to a lifting device and a carrier vehicle, comprising a lifting plate, a bottom plate, push rods, a moving mechanism and an auxiliary support mechanism. The lifting plate and the bottom plate are oppositely arranged. The push rods are arranged in pairs between the lifting plate and the bottom plate. Each push rod includes a rotating end and a moving end. The rotating end is connected to the lifting plate. The moving mechanism is movably connected to the bottom plate, and the moving end is connected to the moving mechanism. The moving mechanism is configured to drive the moving end to move linearly relative to the bottom plate, so that one end of the push rod rotates relative to the lifting plate and the other end moves relative to the bottom plate. The auxiliary support structures are arranged in pairs between the lifting plate and the bottom plate. The two connecting ends of the auxiliary support structure are respectively rotatably connected to the lifting plate and the bottom plate to support the lifting plate together with the push rods. The rotation axis of the connecting end is perpendicular or almost perpendicular to the rotation axes of the rotating end and the moving end, restricting the translational freedom and the rotational freedom of the lifting plate in the horizontal direction, so that there is no position deviation of the lifting plate in the horizontal direction before and after lifting, and tipping is prevented at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of automated guided mobile devices, and particularly to a lifting device and a carrier vehicle. Background Art

[0002] An AGV (Automated Guided Vehicle) is usually also called an AGV cart, which refers to a transport vehicle equipped with an automatic navigation device such as electromagnetic or optical, capable of traveling along a specified navigation path and having safety protection and various transfer functions. Generally, the lifting device of an AGV is provided with a lifting plate and an auxiliary support structure to achieve the lifting movement, but such a lifting device is likely to cause a position deviation in the horizontal direction before and after the lifting plate is lifted. Summary of the Invention

[0003] Based on this, it is necessary to provide a lifting device that does not have a horizontal position deviation before and after the lifting of the lifting plate, avoids tipping, and is easy to control, aiming at the problem of the position deviation in the horizontal direction before and after the lifting of the lifting plate of the lifting device.

[0004] A lifting device, the lifting device comprising:

[0005] A lifting plate and a bottom plate, the lifting plate being disposed opposite to the bottom plate;

[0006] Push rods, the push rods being provided in pairs between the lifting plate and the bottom plate, the push rods including a rotating end and a moving end, the rotating end being connected to the lifting plate;

[0007] A moving mechanism, the moving mechanism being movably connected to the bottom plate, the moving end being connected to the moving mechanism, the moving mechanism being configured to drive the moving end to move linearly relative to the bottom plate;

[0008] An auxiliary support structure, the auxiliary support structure being provided in pairs between the lifting plate and the bottom plate, the auxiliary support structure including two connecting ends, the two connecting ends being respectively rotatably connected to the lifting plate and the bottom plate, and the rotation axis of the connecting end being perpendicular to the rotation axis of the rotating end.

[0009] In one embodiment, the lifting device further includes a connecting structure, the connecting structure being fixedly connected to the lifting plate, the connecting structure being rotatably connected to the rotating end of the push rod and rotatably connected to the connecting end on the side of the auxiliary support structure close to the lifting plate, and the auxiliary support structure being diagonally arranged relative to the bottom plate.

[0010] In one embodiment, there are at least two push rods. The push rod includes a first bent section and a second bent section. The first bent section bends towards the lifting plate, and the second bent section bends towards the bottom plate. The first bent section is connected to the second bent section; and / or,

[0011] There are at least two auxiliary support structures. The auxiliary support structure includes a first connecting rod, a rotating shaft, and a second connecting rod. The first connecting rod is rotatably connected to the second connecting rod through the rotating shaft. The first connecting rod is rotatably connected to the connecting structure, and the second connecting rod is rotatably connected to the bottom plate.

[0012] In one embodiment, the moving mechanism includes a nut seat, a guide rail, a guide seat, a lead screw, and a lifting drive motor. The lead screw is connected to the nut seat and is drivingly connected to the lifting drive motor. The nut seat is movably connected to the guide rail. There are two guide seats. The two ends of the lead screw are respectively connected to the two guide seats. Both the guide rail and the guide seat are fixedly connected to the bottom plate.

[0013] In one embodiment, the moving mechanism further includes a transmission component. The transmission component includes a first transmission gear and a second transmission gear. The first transmission gear is drivingly connected to the lifting drive motor. The second transmission gear meshes with the first transmission gear and is connected to the lead screw.

[0014] In one embodiment, the lifting device further includes a rotation drive mechanism. The rotation drive mechanism is drivingly connected to the lifting plate and is connected to the connecting structure for controlling the rotation of the lifting plate.

[0015] In one embodiment, the rotation drive mechanism includes a rotation drive motor, a first rotation gear, and a second rotation gear. The connecting structure is provided with a receiving cavity. The first rotation gear and the second rotation gear are arranged in the receiving cavity. The rotation drive motor is connected to the first rotation gear and is fixedly connected to the connecting structure. The second rotation gear is connected to the first rotation gear and is fixedly connected to the lifting plate.

[0016] In one embodiment, the lifting device further includes a limiting member. The limiting member is arranged between the connecting structure and the bottom plate and is connected to the bottom plate. The limiting member is provided with a limiting plane. The limiting plane is arranged at one end of the limiting member close to the connecting structure to prevent the connecting structure from colliding with the moving mechanism during the lifting process.

[0017] In one embodiment, the lifting plate further includes an anti-slip pad. At least two anti-slip pads are evenly arranged on the side of the lifting plate away from the bottom plate.

[0018] A carrier vehicle includes the lifting device as described above.

[0019] For the above-mentioned lifting device, the lifting plate and the bottom plate are arranged oppositely. The push rods are arranged in pairs between the lifting plate and the bottom plate. The rotating ends of the push rods are connected to the lifting plate, and the moving ends of the push rods are connected to the moving mechanism. The moving mechanism is movably connected to the bottom plate. By driving the moving end of the push rod to move linearly relative to the bottom plate through the moving mechanism, one end of the push rod can rotate relative to the lifting plate, and the other end can move relative to the bottom plate, so as to jack up or lower the lifting plate in the height direction. The auxiliary support structures are arranged in pairs between the lifting plate and the bottom plate. The two connecting ends of the auxiliary support structures are respectively rotatably connected to the lifting plate and the bottom plate. During the process of the push rod jacking up or lowering the lifting plate, the two connecting ends can rotate to keep the auxiliary support structures supporting the lifting plate together with the push rod. The rotation axis of the connecting end is perpendicular or almost perpendicular to the rotation axes of the rotating end and the moving end of the push rod, thereby restricting the translational freedom and spatial rotational freedom of the lifting plate in the horizontal direction, so that there is no position deviation of the lifting plate in the horizontal direction before and after lifting and lowering, facilitating the docking work of the carrier vehicle equipped with the lifting device, and at the same time preventing the lifting plate from tipping over during the lifting and lowering process, improving the lifting stability of the lifting device. Description of the Drawings

[0020] Figure 1 It is a perspective view of the first view angle of the lifting device in an embodiment;

[0021] Figure 2 It is a perspective view of the second view angle of the lifting device in an embodiment;

[0022] Figure 3 It is a perspective view of the third view angle of the lifting device in an embodiment;

[0023] Figure 4 It is a perspective view of the fourth view angle of the lifting device in an embodiment;

[0024] Figure 5 It is a perspective view of the fifth view angle of the lifting device in an embodiment;

[0025] Figure 6 It is a top view of the moving mechanism of the lifting device in an embodiment;

[0026] Figure 7 It is a three-dimensional sectional view of the lifting device in an embodiment;

[0027] Figure 8 It is a structural schematic diagram of the auxiliary support structure in an embodiment.

[0028] Reference Numeral Explanation;

[0029] 10. Lifting plate; 11. Anti-slip mat; 20. Push rod; 21. Rotating end; 22. Mobile end; 30. Nut seat; 31. Guide rail; 32. Bearing; 33. Guide seat; 34. Lifting drive motor; 35. First transmission gear; 36. Second transmission gear; 37. Lead screw; 38. End cover; 40. Auxiliary support structure; 401. First connecting rod; 402. Rotating shaft; 403. Second connecting rod; 41. Connecting end; 50. Base plate; 60. Connecting structure; 70. Rotation drive motor; 71. First rotation gear; 72. Second rotation gear; 80. Limiting part. 90. First sensor; 91. Second sensor; 92. Third sensor. Detailed implementation manners

[0030] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 cannot be construed as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In the present invention, unless otherwise clearly specified or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0036] Refer to Figures 1 to 5 , Figure 1 which shows a perspective view of the lifting device in a first perspective in an embodiment of the present invention, Figure 2 is a perspective view of the lifting device in a second perspective in an embodiment; Figure 3 is a perspective view of the lifting device in a third perspective in an embodiment; Figure 4 is a perspective view of the lifting device in a fourth perspective in an embodiment; Figure 5A perspective view of the fifth angle of the lifting device in an embodiment. An embodiment of the present invention provides a lifting device, including a lifting plate 10, a bottom plate 50, a push rod 20, a moving mechanism and an auxiliary support mechanism. The lifting plate 10 is disposed opposite to the bottom plate 50. The push rods 20 are arranged in pairs between the lifting plate 10 and the bottom plate 50. The rotating end 21 of the push rod 20 is connected to the lifting plate 10, and the moving end 22 of the push rod 20 is connected to the moving mechanism. The moving mechanism is movably connected to the bottom plate 50. By driving the moving end 22 of the push rod 20 to move linearly relative to the bottom plate 50 through the moving mechanism, one end of the push rod 20 can rotate relative to the lifting plate 10, and the other end can move relative to the bottom plate 50, so as to jack up or lower the lifting plate 10 in the height direction. The auxiliary support structures 40 are arranged in pairs between the lifting plate 10 and the bottom plate 50. The two connecting ends 41 of the auxiliary support structure 40 are respectively rotatably connected to the lifting plate 10 and the bottom plate 50. During the process of the push rod 20 jacking up or lowering the lifting plate 10, the two connecting ends 41 can rotate to keep the auxiliary support structure 40 supporting the lifting plate 10 together with the push rod 20. The rotation axis of the connecting end 41 is perpendicular or almost perpendicular to the rotation axes of the rotating end 21 and the moving end 22 of the push rod 20, thereby restricting the translational degree of freedom and the spatial rotational degree of freedom of the lifting plate 10 in the horizontal direction, so that there is no position deviation in the horizontal direction before and after the lifting plate 10 is lifted or lowered, which is convenient for the carrier vehicle equipped with the lifting device to carry out docking work, and at the same time can prevent the lifting plate 10 from tipping over during the lifting and lowering process, improving the lifting stability of the lifting device.

[0037] In order to further improve the lifting stability of the lifting device and facilitate assembly, in one embodiment, the lifting device further includes a connecting structure 60. The connecting structure 60 is fixedly connected to the lifting plate 10, rotatably connected to the rotating end 21 of the push rod 20, and rotatably connected to the connecting end 41 on the side of the auxiliary support structure 40 close to the lifting plate 10. The auxiliary support structures 40 are diagonally arranged relative to the bottom plate 50, so that the rotating ends 21 and the moving ends 22 of the push rods 20 arranged in pairs are located between the connecting ends 41 of the two auxiliary support structures 40, and the auxiliary support structures 40 and the push rods 20 together support the lifting plate 10. By the rotation axes of the connecting ends 41 of the auxiliary support structure 40 being perpendicular or almost perpendicular to the rotation axes of the rotating end 21 and the moving end 22 of the push rod 20, the translational degree of freedom and the spatial rotational degree of freedom of the lifting plate 10 in the horizontal direction are restricted, so that the lifting plate 10 can remain horizontal or almost horizontal during the process of being jacked up or lowered by the push rod 20, preventing the lifting plate 10 from tilting and flipping, and improving the stability and reliability. The lateral area of the connecting structure 60 is smaller than the plate area of the lifting plate 10. By connecting the rotating end 21 of the push rod 20 and the connecting end 41 of the auxiliary support structure 40 through the connecting structure 60, and then connecting the connecting structure 60 to the lifting plate 10, it is convenient to install the lifting plate 10 and facilitates the assembly operation of the lifting device.

[0038] Optionally, as Figure 3 and Figure 4 shown, in order to improve the reliability of the push rod 20, in one embodiment, there are at least two push rods 20. The push rod 20 includes a first bent section and a second bent section. The first bent section bends towards the lifting plate 10, and the second bent section bends towards the bottom plate 50. The first bent section is connected to the second bent section. By means of the first bent section and the second bent section, the stress state of the push rod 20 is improved, so that the push rod 20 is more stable and smooth during the movement along with the moving mechanism. Optionally, there are two or four push rods 20, and every two push rods 20 are arranged in pairs. The moving ends 22 of the push rods 20 are all rotatably connected to the moving mechanism, further improving the lifting stability of the lifting plate 10.

[0039] Optionally, as Figure 8 shown, Figure 8 is a schematic structural view of the auxiliary support structure 40 in one embodiment. In order to make the auxiliary support structure 40 keep in sync with the push rod 20 during the lifting process of the lifting plate 10, in one embodiment, there are at least two auxiliary support structures 40. The auxiliary support structure 40 includes a first connecting rod 401, a rotating shaft 402 and a second connecting rod 403. The first connecting rod 401 is rotatably connected to the second connecting rod 403 through the rotating shaft 402. The first connecting rod 401 is rotatably connected to the connecting structure 60, and the second connecting rod 403 is rotatably connected to the bottom plate 50. During the process of the moving mechanism and the push rod 20 lifting and lowering the lifting plate 10, through the relative rotation of the first connecting rod 401 and the second connecting rod 403 relative to the rotating shaft 402 and the relative rotation of the two connecting ends 41 relative to the lifting plate 10 and the bottom plate 50 respectively, the height of the auxiliary support structure 40 between the lifting plate 10 and the bottom plate 50 changes, so as to keep in synchronous movement with the push rod 20 and realize the lifting movement of the lifting plate 10. Optionally, there are two or four auxiliary support structures 40. When there are four auxiliary support structures 40, the four auxiliary support structures 40 are arranged at the four corners of the bottom plate 50, which can further improve the support stability of the lifting plate 10.

[0040] In order to realize the movement of the moving end 22 of the push rod 20 relative to the bottom plate 50, as Figures 1 to 6 shown, Figure 6The top view of the moving mechanism of the lifting device in an embodiment. In one embodiment, the moving mechanism includes a nut seat 30, a guide rail 31, a guide seat 33, a lead screw 37, and a lifting drive motor 34. The lead screw 37 is connected to the nut seat 30 and is drivingly connected to the lifting drive motor 34. The nut seat 30 is movably connected to the guide rail 31. There are two guide seats 33. The two ends of the lead screw 37 are respectively connected to the two guide seats 33. Both the guide rail 31 and the guide seat 33 are fixedly connected to the bottom plate 50. The two ends of the lead screw 37 are rotationally connected and supported by the two guide seats 33. The lead screw 37 is driven to rotate by the lifting drive motor 34, so that the nut seat 30 moves linearly relative to the guide rail 31 and the bottom plate 50. The moving end 22 of the push rod 20 is rotationally connected to the nut seat 30. The nut seat 30 can drive the moving end 22 of the push rod 20 to move, so that the push rod 20 can lift or lower the lifting plate 10 during the movement process, completing the lifting and lowering of the lifting plate 10. The lead screw 37-nut structure is simple and convenient to control, making the lifting device easy to implement. Optionally, the moving mechanism further includes a bearing 32 and an end cover 38. The lead screw 37 is rotationally connected to the two guide seats 33 through the bearing 32, ensuring smooth movement of the lead screw 37 and improving the transmission efficiency of the lead screw 37. The end cover 38 is connected to the guide seat 33 to cover the end face of the bearing 32 to protect the bearing 32 and improve the service life of the moving mechanism.

[0041] In order to facilitate driving the lead screw 37, in one embodiment, the moving mechanism further includes a transmission assembly. The transmission assembly includes a first transmission gear 35 and a second transmission gear 36. The first transmission gear 35 is drivingly connected to the lifting drive motor 34. The second transmission gear 36 meshes with the first transmission gear 35 and is connected to the lead screw 37, facilitating the transmission of the torque of the lifting drive motor 34 to the lead screw 37, while reducing the transmission distance and the space occupied by the transmission assembly.

[0042] In order to realize the rotation of the lifting plate 10 and improve the functionality of the lifting device, as Figures 1 to 7 shown, Figure 7 The three-dimensional sectional view of the lifting device in an embodiment. In one embodiment, the lifting device further includes a rotation drive mechanism. The rotation drive mechanism is drivingly connected to the lifting plate 10 and is connected to the connection structure 60, and is used to control the rotation of the lifting plate 10 to meet the functional requirements of the lifting plate 10 for carrying items.

[0043] Optionally, in one embodiment, the rotation driving mechanism includes a rotation driving motor 70, a first rotation gear 71, and a second rotation gear 72. The connecting structure 60 is provided with a receiving cavity. The first rotation gear 71 and the second rotation gear 72 are disposed in the receiving cavity. The rotation driving motor 70 is connected to the first rotation gear 71 and fixedly connected to the connecting structure 60. The second rotation gear 72 is connected to the first rotation gear 71 and fixedly connected to the lifting plate 10. The rotation driving motor 70 is connected and installed through the connecting structure 60, and the motion is transmitted to the lifting plate 10 through the first rotation gear 71 and the second rotation gear 72, realizing the rotation of the lifting plate 10 relative to the connecting structure 60 and meeting the functional requirements for the lifting plate 10 to carry items. Optionally, the lifting plate 10 and the second rotation gear 72 are fixedly connected by screws provided on the end face of the second gear.

[0044] Optionally, in one embodiment, the lifting device further includes a limiting member 80. The limiting member 80 is disposed between the connecting structure 60 and the bottom plate 50 and connected to the bottom plate 50. The limiting member 80 is provided with a limiting plane. The limiting plane is disposed at one end of the limiting member 80 close to the connecting structure 60, and is used to prevent the connecting structure 60 from colliding with the moving mechanism during the lifting process. When the lifting plate 10 descends, the limiting plane of the limiting member 80 can resist the connecting structure 60, preventing the lifting plate 10 from descending excessively and causing the connecting structure 60 to collide with the moving mechanism, facilitating the movement reset of the push rod 20 and the auxiliary support structure 40, and improving the safety and reliability of the lifting device.

[0045] Optionally, in order to further improve the reliability of the lifting device, a first sensor 90 is disposed on the outer wall of the connecting structure 60 for detecting the rotation of the lifting plate 10, facilitating the control system to control the reset of the lifting plate 10; a second sensor 91 and a third sensor 92 are disposed on the bottom plate 50. The position of the second sensor 91 corresponds to the farthest movement position of the nut seat 30. The farthest movement position of the nut seat 30 is located on the side of the guide rail 31 away from the lifting driving motor 34 and corresponds to the highest position where the push rod 20 can lift the lifting plate 10; the third sensor 92 corresponds to the starting movement position of the nut seat 30. The starting movement position of the nut seat 30 is located on the side of the guide rail 31 close to the lifting driving motor 34 and corresponds to the lowest position where the push rod 20 can lower the lifting plate 10. Through the induction of the above three sensors, it is convenient for the control system to realize the movement control and reset of the lifting plate 10, improving the reliability of the lifting device.

[0046] As Figure 1 shown, in one embodiment, the lifting plate 10 further includes an anti-slip pad 11. At least two anti-slip pads 11 are evenly arranged on the side of the lifting plate 10 away from the bottom plate 50. Optionally, the number of anti-slip pads 11 is two or three or four or five or six or seven or eight, reducing the consumption of the anti-slip pad 11 while playing an anti-slip role.

[0047] A carrier vehicle includes a lifting device as described above. By means of the above-mentioned lifting device, there is no position deviation in the horizontal direction before and after the lifting plate 10 is lifted and lowered, which facilitates the docking operation of the carrier vehicle equipped with this lifting device. At the same time, it prevents the lifting plate 10 from tipping over during the lifting and lowering process, improves the lifting stability of the lifting device, and enhances the reliability of the carrier vehicle.

[0048] For the above-mentioned lifting device, the lifting plate 10 and the bottom plate 50 are arranged opposite to each other. The push rods 20 are arranged in pairs between the lifting plate 10 and the bottom plate 50. The rotating end 21 of the push rod 20 is connected to the lifting plate 10, and the moving end 22 of the push rod 20 is connected to the moving mechanism. The moving mechanism is movably connected to the bottom plate 50. By driving the moving end 22 of the push rod 20 to move linearly relative to the bottom plate 50 through the moving mechanism, the push rod 20 can rotate at one end relative to the lifting plate 10 and move at the other end relative to the bottom plate 50, so as to jack up or lower the lifting plate 10 in the height direction. The auxiliary support structures 40 are arranged in pairs between the lifting plate 10 and the bottom plate 50. The two connecting ends 41 of the auxiliary support structure 40 are respectively rotatably connected to the lifting plate 10 and the bottom plate 50. During the process of the push rod 20 jacking up or lowering the lifting plate 10, the two connecting ends 41 can rotate to keep the auxiliary support structure 40 supporting the lifting plate 10 together with the push rod 20. The rotation axis of the connecting end 41 is perpendicular or almost perpendicular to the rotation axes of the rotating end 21 and the moving end 22 of the push rod 20, thereby restricting the movement freedom and spatial rotation freedom of the lifting plate 10 in the horizontal direction, so that there is no position deviation in the horizontal direction before and after the lifting plate 10 is lifted and lowered, which facilitates the docking operation of the carrier vehicle equipped with this lifting device. At the same time, it can prevent the lifting plate 10 from tipping over during the lifting and lowering process, and improves the lifting stability of the lifting device.

[0049] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0050] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A lifting device, characterized in that, The lifting device includes: A lifting plate and a bottom plate, the lifting plate being disposed opposite to the bottom plate; Push rods, the push rods being arranged in pairs between the lifting plate and the bottom plate, each push rod including a rotating end and a moving end, the rotating end being connected to the lifting plate; A moving mechanism, the moving mechanism being movably connected to the bottom plate, the moving end being connected to the moving mechanism, the moving mechanism being configured to drive the moving end to move linearly relative to the bottom plate; Auxiliary support structures, the auxiliary support structures being arranged in pairs between the lifting plate and the bottom plate, and each pair of auxiliary support structures being located at the diagonal positions of the bottom plate respectively; the auxiliary support structure includes two connection ends, the two connection ends being rotatably connected to the lifting plate and the bottom plate respectively, the rotation axis of the connection end being perpendicular or substantially perpendicular to the rotation axis of the rotating end; and A connection structure, the connection structure being fixedly connected to the lifting plate, its lateral area being smaller than the plate area of the lifting plate; the connection structure is rotatably connected to the rotating end of the push rod and rotatably connected to the connection end on the side of the auxiliary support structure close to the lifting plate, the auxiliary support structure being diagonally arranged relative to the bottom plate and jointly supporting the lifting plate with the push rod.

2. The lifting device according to claim 1, characterized in that, There are at least two push rods, the push rod includes a first bent section and a second bent section, the first bent section is bent towards the lifting plate, the second bent section is bent towards the bottom plate, and the first bent section is connected to the second bent section; and / or, there are at least two auxiliary support structures, the auxiliary support structure includes a first connecting rod, a rotating shaft and a second connecting rod, the first connecting rod is rotatably connected to the second connecting rod through the rotating shaft, the first connecting rod is rotatably connected to the connection structure, and the second connecting rod is rotatably connected to the bottom plate.

3. The lifting device according to claim 1, characterized in that, The moving mechanism includes a nut seat, a guide rail, a guide seat, a lead screw and a lifting drive motor, the lead screw is connected to the nut seat and is drivingly connected to the lifting drive motor, the nut seat is movably connected to the guide rail, there are two guide seats, and both ends of the lead screw are connected to the two guide seats respectively, and the guide rail and the guide seat are both fixedly connected to the bottom plate.

4. The lifting device according to claim 3, characterized in that, The moving mechanism further includes a transmission component, the transmission component includes a first transmission gear and a second transmission gear, the first transmission gear is drivingly connected to the lifting drive motor, the second transmission gear meshes with the first transmission gear and is connected to the lead screw.

5. The lifting device according to claim 1, characterized in that, The lifting device further includes a rotation drive mechanism, the rotation drive mechanism is drivingly connected to the lifting plate and is connected to the connection structure for controlling the rotation of the lifting plate.

6. The lifting device according to claim 5, characterized in that, The rotation drive mechanism includes a rotation drive motor, a first rotation gear and a second rotation gear, the connection structure is provided with a receiving cavity, the first rotation gear and the second rotation gear are arranged in the receiving cavity, the rotation drive motor is connected to the first rotation gear and is fixedly connected to the connection structure, and the second rotation gear is connected to the first rotation gear and is fixedly connected to the lifting plate.

7. The lifting device according to claim 1, characterized in that, The lifting device further includes a limiting member, which is disposed between the connecting structure and the bottom plate and connected to the bottom plate. The limiting member is provided with a limiting plane, and the limiting plane is disposed at one end of the limiting member close to the connecting structure to prevent the connecting structure from colliding with the moving mechanism during the lifting process.

8. The lifting device according to claim 1, characterized in that, The lifting plate further includes an anti-slip pad, and at least two anti-slip pads are evenly arranged on a surface of the lifting plate away from the bottom plate.

9. A carrier vehicle, characterized in that, It includes the lifting device according to any one of claims 1 to 8.

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