Jacking device and load carrier jacking system

Abstract

A jacking device and a trolley jacking system. The jacking device (100) comprises a first actuator (10) having a first actuation lever (11) movable in a first direction, a movable member (20) and a jacking member (30) configured to jack an object to be jacked and configured to be movable in a second direction upon an exertion of a force by the movable member (20), and the second direction is different from the first direction. The trolley jacking system (1000) comprises the jacking device (100) and a trolley (200).

Description

Technical Field

[0001] This application relates to the field of object lifting, and in particular to a lifting device and a cargo vehicle lifting system. Background Technology

[0002] Lifting devices are used in many aspects of industrial production and daily life. They are used to raise objects from a lower position to a higher position to facilitate subsequent manufacturing, assembly, debugging, or other operations.

[0003] When the object being lifted is heavy, the current lifting device is prone to pressure drop, resulting in poor stability of the lifting device. Summary of the Invention

[0004] In view of the above problems, this application provides a lifting device and a cargo vehicle lifting system, which can improve the stability of the lifting device.

[0005] In a first aspect, this application provides a lifting device comprising: a first actuator including a first actuation rod configured to move in a first direction; a movable member connected to the first actuation rod and configured to move with the movement of the first actuation rod; and a lifting member configured to lift an object to be lifted, wherein the lifting member is configured to receive a force applied by the movable member and move in a second direction, and the second direction is different from the first direction. Because the direction of movement of the first actuation rod of the first actuator can be different from the lifting direction of the lifting member, even if the lifting member is subjected to excessive pressure, it is not easy for the first actuation rod of the first actuator to move under pressure, thus improving the stability of the lifting and the accuracy of the positioning.

[0006] In some embodiments, the movable member is configured to move along the first direction with the movement of the first actuating rod. The movable member has an inclined surface configured to apply a force to the lifting member as the movable member moves, causing the lifting member to move in the second direction. The inclined surface allows for self-locking of the lifting mechanism through a simple structure, thereby improving lifting stability and positioning accuracy.

[0007] In some embodiments, the tilt angle of the inclined surface relative to the first direction can be from 10° to 45°. In some embodiments, the tilt angle of the inclined surface relative to the first direction can be from 15° to 30°. In some embodiments, the tilt angle of the inclined surface relative to the first direction can be from 20° to 25°. By appropriately selecting the tilt angle, the movement of the first actuation rod 11 of the first actuator 10 under pressure can be better avoided, thereby improving the stability of the lifting and the accuracy of the positioning.

[0008] In some embodiments, the first actuating rod is connected to the movable component via a first connecting mechanism. The first connecting mechanism can be configured to transmit movement of the first actuating rod to the movable component, and is configured such that there is a movement margin between the first actuating rod and the movable component in the first direction. This connection method reduces the requirements for part machining accuracy, thereby reducing manufacturing costs.

[0009] In some embodiments, the first connecting mechanism may include a connecting rod and a connecting seat. The connecting rod is connected to the first actuating rod, and the connecting seat is connected to the movable component. This arrangement reduces wear on key components and facilitates assembly.

[0010] In some embodiments, the connecting rod may have a first limiting portion with an increased diameter, a second limiting portion with an increased diameter, and a third portion located between the first and second limiting portions. The connecting seat may have a slot. The first and second limiting portions are located on opposite sides outside the slot and are configured to restrict the movement of the connecting rod in the first direction. The third portion is accommodated in the slot. This arrangement improves mechanism stability and facilitates assembly.

[0011] In some embodiments, the slot has a length in the first direction. The length of the third portion is slightly greater than the length of the slot, such that the connecting rod has the movement margin relative to the connecting seat in the first direction. This arrangement improves mechanism stability, reduces wear on components, and also reduces the requirements for component machining accuracy, thereby reducing manufacturing costs. Such a structure is also easier to assemble, reducing the skill requirements for assembly personnel.

[0012] In some embodiments, the slot may be a U-shaped slot. The design of the U-shaped slot facilitates the assembly of the connecting rod and the connecting seat.

[0013] In some embodiments, the connector may have a stepped portion comprising a first surface and a second surface perpendicular to each other. The movable component is seated on the first surface and fixedly connected to the movable component by fasteners disposed on the second surface. This ensures that the connector can be more reliably secured to the movable component.

[0014] In some embodiments, the movable component may include at least one wedge having an inclined surface configured to apply a force to the lifting component as the movable component moves, causing the lifting component to move in the second direction. The wedge will not descend even under large forces, thus improving lifting stability and preventing lifting skew.

[0015] In some embodiments, the lifting device may include at least two movable parts connected by a linkage. This allows for a relatively uniform application of force to the lifting parts, avoiding stress concentration and making the lifting process smoother.

[0016] In some embodiments, the movable component may be provided with one of a slide rail and a slider, and the frame of the lifting device may be provided with the other of a slide rail and a slider. The slide rail and the slider cooperate with each other to enable the movable component to move in the first direction. This allows the movable component to move smoothly and steadily in the first direction, thereby further improving the stability of the lifting.

[0017] In some embodiments, the lifting surface of the lifting component for lifting the object may be provided with multiple fixed seats, each fixed seat having multiple omnidirectional balls. The omnidirectional balls facilitate adjustment and positioning of the object being lifted. The multiple fixed seats facilitate modular manufacturing, thereby increasing flexibility and reducing costs. Multiple omnidirectional balls also help to increase the contact surface and improve load-bearing capacity.

[0018] In some embodiments, the plurality of fixing seats may include a plurality of first fixing seats, wherein the omnidirectional balls on the first fixing seats may be arranged in a straight line. This can effectively support and adjust the lifted object, and can increase the contact surface and improve the load-bearing capacity.

[0019] In some embodiments, the plurality of fixing seats may include a plurality of second fixing seats, wherein the omnidirectional balls on the plurality of second fixing seats may be arranged in a triangular pattern. This can better increase the contact surface and better distribute the pressure.

[0020] In some embodiments, the triangular arrangement of the omnidirectional balls on the plurality of second mounting bases can have at least two different orientations. This can further increase the contact area, distribute pressure, and improve load-bearing capacity.

[0021] In some embodiments, the lifting device may further include a second actuator and a clamping mechanism, the second actuator being configured to drive the clamping mechanism to move between a clamped position and a released position. This allows the object or vehicle to be lifted to be pre-positioned before lifting, thus preventing positional shift.

[0022] In some embodiments, the lifting device may further include a positioning mechanism fixed to the lifting member. The positioning mechanism may include a third actuator and a positioning pin. The third actuator may be configured to drive the positioning pin to move along the second direction between an extended position and a retracted position. The positioning mechanism allows for more precise positioning of the lifted object relative to the lifting device.

[0023] In some embodiments, the locating pins may be configured to mate with locating holes, and the outer contour of the cross-section of at least one of the locating pins may include a contact section and a non-contact section. The contact section engages with the inner surface of the locating hole, while the non-contact section does not contact the inner surface of the locating hole. This arrangement prevents over-positioning and facilitates movement, installation, and adjustment while maintaining accurate positioning.

[0024] In some embodiments, the locating pin can be configured to mate with a circular locating hole. The contact section may include two opposing arc segments, and the non-contact section may include four straight line segments connected to the four endpoints of the two arc segments, with adjacent straight line segments connected to each other. The lengths of the four straight line segments may be equal. This configuration of the locating pin facilitates machining, prevents over-positioning, and provides accurate positioning while facilitating movement, installation, and adjustment.

[0025] In some embodiments, the positioning mechanism may further include a groove in which the positioning pin is movable. The groove can limit the range of motion of the positioning pin.

[0026] In some embodiments, the third actuator may include a third actuating rod, which can be connected to the locating pin via a connector. The positioning mechanism can be fixed to the lifting component via a fixing plate. The connector allows for reduced requirements on component machining accuracy and facilitates assembly and disassembly. The fixing of the positioning mechanism to the lifting component via the fixing plate facilitates accurate positioning after the lifting component is lifted into place.

[0027] In some embodiments, the lifting device may include a first detection device configured to detect whether the object to be lifted has been loaded. Detecting the presence or absence of the object determines whether it has been loaded, thus preventing ineffective lifting.

[0028] In some embodiments, the lifting device may include a second detection device configured to detect whether the object to be lifted is tilted. The second detection device can prevent lifting when the object is improperly loaded, thereby further improving the stability of the lifting process.

[0029] In some embodiments, the first detection device and / or the second detection device may include an optical detector. The optical detector may include a through-beam detector. Using an optical sensor, such as a through-beam sensor, allows for accurate detection in a simple and cost-effective manner.

[0030] In some embodiments, the first detection device may be disposed at the center of at least one side of the object to be lifted. This allows for the detection of whether objects of various sizes have been loaded.

[0031] In some embodiments, the second detection device may be positioned near at least one of the four corners of the object to be lifted. This allows for better detection of whether the object to be lifted is tilted in the vertical direction.

[0032] In some embodiments, the lifting component may include a crossbeam. Rollers are provided at the bottom of the crossbeam, and the rollers are configured to move on the inclined surface as the movable component moves, thereby causing the crossbeam to move in the second direction. By providing the rollers as described above, the thrust required by the first actuator can be reduced, and the lifting can be completed smoothly.

[0033] In some embodiments, the lifting device may also have a guide mechanism configured to guide an object into the lifting device. The guide mechanism can prevent an object (e.g., a cargo vehicle) entering the lifting device from moving skewed.

[0034] In some embodiments, the first actuator may further include at least one position detection sensor configured to detect whether the movement of the first actuator rod in a first direction has reached a predetermined position. Using a position sensor allows for more precise control of the lifting device's lifting, preventing over-lifting or under-lifting.

[0035] In some embodiments, the first actuator, the second actuator, and / or the third actuator are cylinders. Cylinders can stably provide driving force. When the first actuator is a cylinder, since the second direction, which is the lifting direction, is different from the first direction, which is the cylinder extension / retraction direction, even if the cylinder's air supply is insufficient during compression, the first actuator rod of the cylinder is difficult to be pushed to extend or retract by the downward pressure, thereby achieving self-locking of the lifting surface.

[0036] In another aspect, some embodiments of the present invention provide a cargo vehicle lifting system, characterized in that the cargo vehicle lifting system includes a lifting device according to any of the preceding embodiments and a cargo vehicle, the cargo vehicle including a base plate configured to be lifted by the lifting device in the second direction. In addition to the advantages of the lifting device described above, since the cargo vehicle includes a base plate that can be lifted separately for carrying cargo, there is no need to lift the cargo vehicle itself, thus improving lifting capacity and adapting to various lifting needs.

[0037] In some embodiments, the substrate may have at least one positioning hole. The positioning hole can cooperate with the positioning pin of the lifting device to precisely position the substrate of the cargo vehicle relative to the lifting device.

[0038] In some embodiments, the vehicle may be an automated guided vehicle (AGV). This facilitates automated conveying, lifting, and other operations.

[0039] In some embodiments, the vehicle can be used to load a battery pack. This facilitates stable lifting during battery manufacturing, assembly, and / or maintenance.

[0040] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0042] Figure 1 This is a schematic diagram of the structure of a cargo vehicle lifting system according to some embodiments of this application;

[0043] Figure 2 This is a side view schematic diagram of a cargo vehicle according to some embodiments of this application;

[0044] Figure 3 This is a top view schematic diagram of a cargo vehicle according to some embodiments of this application;

[0045] Figure 4 This is a schematic diagram of the lifting device according to some embodiments of this application;

[0046] Figure 5A This is a perspective view of a portion of the lifting device according to some embodiments of this application, viewed from the bottom.

[0047] Figure 5B This is a perspective view of a portion of the lifting device according to some embodiments of this application;

[0048] Figure 6 This is a side view schematic diagram of a portion of a lifting device according to some embodiments of this application;

[0049] Figure 7A These are side and front view schematic diagrams of the connecting rod and connecting seat assembled together in the first connecting mechanism of some embodiments of this application;

[0050] Figure 7B These are side and front view schematic diagrams of the connecting rod of the first connecting mechanism in some embodiments of this application;

[0051] Figure 7C These are side and front view schematic diagrams of the connecting seat of the first connecting mechanism in some embodiments of this application;

[0052] Figure 8 This is a schematic diagram of the positioning mechanism of the lifting device according to some embodiments of this application;

[0053] Figure 9 This is a front view schematic diagram of the positioning mechanism of the lifting device in some embodiments of this application;

[0054] Figure 10 This is a schematic AA cross-sectional view of the positioning mechanism of the lifting device in some embodiments of this application;

[0055] Figure 11 This is a top view schematic diagram of the positioning mechanism of the lifting device according to some embodiments of this application; and

[0056] Figure 12 This is an enlarged cross-sectional view of the positioning pin of the positioning mechanism in some embodiments of this application;

[0057] The accompanying drawings are not drawn to scale.

[0058] The reference numerals in the attached drawings in the specific embodiments are as follows: 1000 cargo vehicle lifting system; 100 lifting device; 10 first actuator; 11 first actuating rod; 12 position sensor; 20 movable part; 21 frame; 22 inclined surface; 23 connecting rod; 24 slide rail; 25 slider; 30 lifting component; 31 lifting surface; 32 fixed seat; 321 first fixed seat; 322 second fixed seat; 33 omnidirectional ball; 34 crossbeam; 35 roller; 40 first connecting mechanism; 41 connecting rod; 411 first limiting part; 412 second limiting part. Part 3 413; Connecting seat 42; Groove 421; Step portion 422; First surface 4221; Second surface 4222; Nut 43; Fastener 44; Second actuator 50; Clamping mechanism 51; Positioning mechanism 60; Third actuator 61; Third actuator rod 611; Positioning pin 62; Contact section 621; Non-contact section 622; Slide 63; Connector 64; Fixing plate 65; First detection device 70; Second detection device 71; Guide mechanism 80; Cargo carriage 200; Base plate 201; Positioning hole 202. Detailed Implementation

[0059] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0061] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0062] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0063] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0064] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0065] In the description of the embodiments of this application, the technical terms "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0066] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," "fixing," and "linking" 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 the embodiments of this application according to the specific circumstances.

[0067] Although this application has been described with reference to some embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0068] Lifting devices are widely used in various situations in industrial production and daily life. However, current lifting devices suffer from instability. Especially when the object being lifted is heavy, the lifting surface of the device is prone to sinking under pressure, causing the object to tilt and become inaccurately positioned.

[0069] To improve the stability of the lifting device, embodiments of this application provide a lifting device comprising an actuator and a lifting component. The actuator serves as the driving source for the lifting motion, and the lifting component is used to lift the object to be lifted in the lifting direction. The actuator is configured such that the direction of movement of its actuating rod is different from the lifting direction of the lifting component.

[0070] Because the direction of motion of the actuator rod is different from the lifting direction, even if the lifting device bears a large load, the actuator rod is difficult to be pushed by the downward pressure, thus achieving self-locking of the lifting surface. Therefore, the stability of the lifting device is improved and the object being lifted can be prevented from tilting and being mispositioned.

[0071] To achieve this objective, the lifting device according to embodiments of this application may include a movable component. The movable component is connected to the actuating rod and is movable with the movement of the first actuating rod. The movable component is configured to apply a force to the lifting component during movement, causing the lifting component to move in a lifting direction different from the direction of movement of the actuating rod.

[0072] The lifting device disclosed in this application can be used to lift any object to be lifted from a lower position to a higher position and to return the object from a higher position to a lower position. The object may be, for example, a battery pack, a car or its parts, or any other component that needs to be lifted.

[0073] For ease of explanation, the following embodiments will be described using a cargo vehicle lifting system 1000 according to an embodiment of this application as an example.

[0074] Please refer to Figures 1 to 3 . Figure 1 This is a schematic structural diagram of a cargo vehicle lifting system 1000 according to an embodiment of this application. Figure 2 and Figure 3 Side and top views of an embodiment of the cargo vehicle 200 are shown respectively. The cargo vehicle lifting system 1000 includes a lifting device 100 and a cargo vehicle 200. The lifting device 100 is a device for raising an object to be lifted. The cargo vehicle 200 is a transport vehicle for loading the object to be lifted. Although Figure 1 and Figure 3 The illustration shows that the vehicle may have wheels, but alternatively, it may not have wheels. The vehicle 200 may be a feeder, an automated guided vehicle (AGV), or any other means of transport capable of carrying objects.

[0075] The cargo vehicle 200 may have a base plate 201. The object to be lifted may be loaded onto the base plate 201.

[0076] The base plate 201 can be raised and lowered independently. That is, when the cargo trolley 200 is positioned in the lifting device 100, the lifting device 100 can lift only the base plate 201 while keeping the cargo trolley stationary. This reduces the lifting load and facilitates lifting and positioning. Alternatively, the lifting device 100 can also directly lift the object to be lifted or lift the cargo trolley 200.

[0077] The following is combined with Figure 1 as well as Figures 4 to 6 A lifting device 100 according to some embodiments of this application is described. Figure 4 This is a schematic diagram of the lifting device according to some embodiments of this application. Figure 5A and Figure 5B These are schematic structural views of a portion of a lifting device according to some embodiments of this application, viewed from the bottom and side. The lifting device 100 may include a first actuator 10, a movable member 20, and a lifting member 30. The first actuator 10 includes a first actuation rod 11. The first actuation rod 11 is configured to move in a first direction. The movable member 20 is connected to the first actuation rod 11 and is configured to move with the movement of the first actuation rod 11. The lifting member 30 is configured to lift an object to be lifted. The lifting member is configured to receive a force applied by the movable member and move in a second direction, wherein the second direction is different from the first direction. Figure 4 The diagram shows the first direction X as an example and the second direction Z as an example.

[0078] The first actuator 10 is the drive source for the lifting motion. The first actuator can be any device capable of driving the movement of a movable part. In some embodiments, the first actuator can be a drive source that outputs linear motion. In some embodiments, the first actuator 10 can be a cylinder. Alternatively, the first actuator 10 can also be a hydraulic cylinder, a motor, or other types of power drive source. The first actuator rod 11 is the power output component of the first actuator. The ability to move along the first direction can mean being able to reciprocate in the first linear direction. In some embodiments, the first direction can be the length direction of the first actuator rod 11, for example... Figure 4 The direction along the straight line X in the second direction. Movement in the second direction can be reciprocating motion along the second straight line. The second direction is the direction along which the lifting component 30 lifts the object and retracts it, for example... Figure 4 The direction along the straight line Z in the diagram. The second direction differs from the first direction in that the first and second directions intersect each other. In some embodiments, the first direction may be perpendicular to the second direction. In some embodiments, the first direction may be horizontal and the second direction may be vertical.

[0079] According to the lifting device of the embodiment of this application, since the movement direction of the first actuation rod 11 of the first actuator 10 can be different from the lifting direction of the lifting component 30, even if the lifting component 30 is subjected to excessive pressure, it is not easy for the first actuation rod 11 of the first actuator 10 to move under pressure. Thus, lifting self-locking is achieved, which can prevent the object being lifted from shifting or tilting, and improve the stability of lifting and the accuracy of positioning.

[0080] The movable component 20, acting as a motion transmission component, can convert the movement of the first actuating rod 11 of the first actuator 10 in the first direction into the movement of the lifting component 30 in the second direction. The movable component 20 can be any motion transmission component capable of moving with the movement of the first actuating rod 11 and applying a force with a component in the second direction to the lifting component 30 during movement. For example, such a motion transmission component may include, but is not limited to, one or more of a drive rod, slider, cam, ratchet, and gear.

[0081] In some embodiments, the movable member is configured to move along the first direction with the movement of the first actuating rod 11. The movable member 20 may have an inclined surface 22. The inclined surface 22 is configured to apply a force to the lifting member as the movable member moves, causing the lifting member to move in the second direction.

[0082] In some embodiments, "the movable member 20 has an inclined surface" can mean that at least a portion of the surface of the movable member that interacts with the lifting member 30 is inclined relative to the first direction. In other words, at least a portion of the surface of the movable member that interacts with the lifting member 30 is not parallel to the first direction.

[0083] Because the movable part 20 has an inclined surface 22, when the movable part 20 moves, the inclined surface can apply a force to the lifting part 30. This force can have a component in the second direction, thereby enabling the lifting part 30 to move in the second direction. This allows for self-locking during lifting with a simple structure, thereby improving the stability of lifting and the accuracy of positioning.

[0084] In some embodiments, the tilt angle of the inclined surface 22 relative to the first direction can be from 10° to 45°. In some embodiments, the tilt angle of the inclined surface 22 relative to the first direction can be from 15° to 30°. In some embodiments, the tilt angle of the inclined surface 22 relative to the first direction can be from 20° to 25°. The tilt angle of the inclined surface 22 relative to the first direction can be 12°, 17°, 22°, 27°, 35°, or 40°.

[0085] By appropriately selecting the tilt angle, the first actuation rod 11 of the first actuator 10 can be better prevented from moving under pressure, thereby improving the stability of the lifting and the accuracy of the positioning.

[0086] See further Figure 5A and Figure 5B In some embodiments, the first actuating rod 11 may be connected to the movable component 20 via a first connecting mechanism 40. The first connecting mechanism 40 may be configured to transmit movement of the first actuating rod 11 to the movable component 20, and the first connecting mechanism 40 may be configured to allow for a movement margin between the first actuating rod 11 and the movable component 20 in the first direction.

[0087] The existence of a movement margin between the first actuating rod 11 and the movable component 20 in the first direction means that the first actuating rod 11 and the movable component 20 are not completely rigidly connected in the first direction, but can have a small relative displacement. The movement margin can be, for example, 0.5mm to 1.5mm, specifically 0.6mm, 0.8mm, 1.0mm, 1.2mm, or 1.4mm. Of course, the movement margin can be set larger when the size of the component increases.

[0088] Since the first actuating rod 11 is connected to the movable part 20 through the first connecting mechanism 40 in a manner with a certain movement margin, the requirements for the machining accuracy of the parts are reduced, thereby reducing the manufacturing cost.

[0089] In reference Figure 5A and Figure 5B At the same time, further refer to Figures 7A to 7C . Figure 7A These are side and front view schematic diagrams of the connecting rod and connecting seat assembled together in the first connecting mechanism of some embodiments of this application. Figure 7B These are side and front view schematic diagrams of the connecting rod of the first connecting mechanism in some embodiments of this application. Figure 7C These are side and front view schematic diagrams of the connecting seat of the first connecting mechanism according to some embodiments of this application. In some embodiments, the first connecting mechanism 40 may include a connecting rod 41 and a connecting seat 42. The connecting rod 41 may be connected to the first actuating rod 11 (e.g., via...). Figure 5A and Figure 5B (See nut 43 for connection). The connecting seat 42 can be connected to the movable part 20. By separately providing the connecting rod 41 and the connecting seat 42, wear on the main components can be reduced and assembly can be facilitated.

[0090] In some embodiments, the connecting rod 41 may have a first limiting portion 411, a second limiting portion 412, and a third portion 413 located between the first limiting portion 411 and the second limiting portion 412. The first limiting portion 411 and the second limiting portion may be limiting portions with increased diameter. The connecting seat may have a slot 421. The first limiting portion 411 and the second limiting portion 412 are located on opposite sides outside the slot 421 and are configured to limit the movement of the connecting rod 41 in the first direction. The third portion 413 is received in the slot 421. With such a structure, the stability of the mechanism can be improved and assembly can be facilitated.

[0091] In some embodiments, the slot 421 has a length L2 in the first direction (see...). Figure 7A and Figure 7C The length L1 of the third part 413 (see...) Figure 7B The length L2 of the slot 421 may be slightly larger than that of the slot 421, so that the connecting rod 41 has the movement margin relative to the connecting seat 42 in the first direction.

[0092] The increased diameter limiting portion refers to a limiting portion whose diameter is larger than that of other portions of the connecting rod 41. "The length L1 of the third portion 413 is slightly larger than the length L2 of the slot 421, such that the connecting rod 41 has the movement margin relative to the connecting seat 42 in the first direction" means that a small relative displacement can exist between the connecting rod 41 and the connecting seat 42 in the first direction. Similarly, as described above, the clearance can be from 0.5 mm to 1.5 mm, specifically 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, or 1.4 mm. The clearance can be set larger when the component size increases.

[0093] The connecting rod 41 and connecting seat 42, as described above, improve the stability of the mechanism and reduce wear on components. Furthermore, the requirements for the precision of component machining can be reduced, thereby lowering manufacturing costs. In addition, this structure is easy to assemble, reducing the skill requirements for assembly personnel.

[0094] In some embodiments, such as Figure 7A and 7C As shown, the slot 421 is a U-shaped slot. (As indicated...) Figure 5A As shown, the U-shaped groove design facilitates the assembly of the connecting rod 41 and the connecting seat 42.

[0095] In some embodiments, such as Figure 7AAs shown, the connecting seat 42 may have a stepped portion 422. The stepped portion 422 may include a first surface 4221 and a second surface 4222 perpendicular to each other. The movable part 20 is seated on the first surface 4221 and fixedly connected to the movable part 20 by a fastener 44 disposed on the second surface 4222. The fastener 44 may be a bolt or a similar component.

[0096] The extending direction of the first surface 4221 can be configured to be the same as the extending direction of the bottom surface of the movable member 30, such that the bottom surface of the movable member 20 can be placed on the first surface. In one embodiment, the extending direction of the first surface 4221 can be the same as the first direction. For example, the first surface can be arranged in a horizontal direction. The second surface 4222 can be perpendicular to the first surface 4221, for example, it can be arranged in a vertical direction.

[0097] The stepped portion 422, as described above, ensures that the connecting seat 42 can be more reliably fixed to the movable part 20.

[0098] In some embodiments, such as Figures 4 to 6 As shown, the movable component 20 includes at least one wedge having an inclined surface 22, which is configured to apply a force to the lifting component 30 when the movable component 20 moves, causing the lifting component 30 to move in the second direction.

[0099] The wedge can be a slider with an inclined surface. In some embodiments, "the wedge has an inclined surface 22" can mean that at least a portion of the surface of the wedge that interacts with the lifting member 30 (e.g., the upper surface) is inclined relative to the surface opposite to that surface (e.g., the lower surface) or relative to the direction of movement of the wedge (e.g., the first direction). In other words, at least a portion of the surface of the wedge that interacts with the lifting member 30 (e.g., the upper surface) is not parallel to the surface opposite to that surface (e.g., the lower surface) or not parallel to the direction of movement of the wedge (e.g., the first direction). "The wedge has an inclined surface 22" does not exclude the possibility that the surface of the wedge that interacts with the lifting member 30 can have a non-inclined surface. In some embodiments, the non-inclined surface is connected to the inclined surface, and the connected portion serves as the starting point and / or the ending point of the lifting formation.

[0100] The wedge, as a movable component, is used to convert the movement of the first actuating rod 11 in the first direction into the movement of the lifting component 30 in the second direction. The wedge will not descend even when subjected to a large force, thus improving lifting stability and preventing lifting tilt.

[0101] As mentioned above, for wedges, in some embodiments, such as Figure 6 As shown, the tilt angle θ of the inclined surface 22 relative to the first direction can be from 10° to 45°. In some embodiments, the tilt angle θ of the inclined surface 22 relative to the first direction can be from 15° to 30°. In some embodiments, the tilt angle θ of the inclined surface 22 relative to the first direction can be from 20° to 25°. The tilt angle θ of the inclined surface 22 relative to the first direction can be 12°, 17°, 22°, 27°, 35°, or 40°.

[0102] In some embodiments, the lifting device 100 includes at least two movable parts 20, which are connected by a connecting rod 23. Figure 5A and Figure 5B In the illustrated embodiment, the lifting device 100 includes two movable parts 20. One of the movable parts 20 is connected to the first actuation rod 11 of the first actuator 10. The two movable parts 20 are connected by a connecting rod 23.

[0103] The movable parts 20 are connected by linkages 23, allowing them to move as a unit. Because multiple movable parts are provided, the lifting component 30 can be subjected to relatively even force, avoiding stress concentration and making the lifting process smoother.

[0104] In some embodiments, the movable component 20 is provided with one of a slide rail 24 and a slider 25, and the frame 21 of the lifting device 20 is provided with the other of a slide rail 24 and a slider 25, wherein the slide rail 24 and the slider 25 cooperate with each other to enable the movable component 20 to move in the first direction.

[0105] exist Figures 4 to 6 In the illustrated embodiment, a slide rail 24 is provided on the movable component 20. The slide rail 24 can be integrated with the movable component 20. A slider 25 is provided on the frame 21 of the lifting device 20. The slider 25 is fixed on the frame 21. The movable component 20 moves in the first direction (…) by the movement of the slide rail 24 on the slider 25. Figure 4 It moves in the X direction.

[0106] By setting slide rails and sliders, the movable part 20 can move smoothly and steadily in the first direction, thereby further improving the stability of the lifting. Furthermore, setting slide rails on the movable part 20 reduces space occupation, which is particularly advantageous when the movable part has a long stroke.

[0107] In some embodiments, such as Figure 4As shown, the lifting surface 31 of the lifting member 30 for lifting objects may be provided with multiple fixing seats 32. Each fixing seat is provided with multiple universal balls 33. In some embodiments, the multiple fixing seats 32 may be arranged at equal intervals on the lifting member 30.

[0108] A spherical ball is a ball that can roll in all directions around its center. Therefore, the object being lifted can move on the surface formed by the spherical balls, facilitating adjustment and positioning. Setting multiple mounting bases and placing multiple spherical balls on each base allows for modular setup and adjustment of the spherical balls, increasing flexibility and reducing costs. Furthermore, multiple spherical balls increase the contact area and facilitate load-bearing capacity. Arranging multiple mounting bases at equal intervals (30°) allows for better pressure distribution with fewer spherical balls.

[0109] In some embodiments, the plurality of fixing seats 32 may include a first fixing seat 321, wherein the universal balls 33 on the first fixing seat 321 are arranged in a straight line, such as... Figure 4 As shown. In some embodiments, the straight line may extend along the length of the lifting member.

[0110] Omnidirectional balls arranged in a straight line can effectively support and adjust the lifted object, and can increase the contact surface and improve load-bearing capacity.

[0111] In some embodiments, additionally or as an alternative, such as Figure 4 As shown, the plurality of fixing seats 32 may include a plurality of second fixing seats 322. The universal balls 33 on the plurality of second fixing seats 322 are arranged in a triangular pattern.

[0112] The triangular arrangement of the omnidirectional balls (33) means that the balls form the vertices of a triangle. This triangular arrangement increases the contact area and distributes pressure more effectively.

[0113] In some embodiments, such as Figure 4 As shown, the triangular arrangement of the omnidirectional balls 33 on the plurality of second fixed seats 322 has at least two different orientations.

[0114] A triangle arrangement having the same orientation means that corresponding sides of the triangles travel in the same direction. Conversely, a triangle arrangement having different orientations means that corresponding sides of the triangles travel in different directions. In other words, two triangle arrangements having different orientations means that the two triangles have been rotated relative to each other by a predetermined angle.

[0115] The universal balls 33 on the second fixed seat 322 are arranged in triangles with different orientations, which can further increase the contact area, distribute pressure and improve the load-bearing capacity.

[0116] In some embodiments, such as Figure 4 As shown, the lifting surface 31 of the lifting member 30 is provided with a plurality of first fixing seats 321 having universal balls 33 arranged in a straight line and a plurality of second fixing seats 322 having universal balls 33 arranged in a triangular pattern. In some embodiments, the first fixing seats 321 may be disposed on the two end portions of the lifting surface 31 of the lifting member 30. The second fixing seats 322 may be disposed between the first fixing seats 321. In some embodiments, each second fixing seat 322 having the triangularly arranged universal balls 33 may have the same construction. In arrangement, at least one second fixing seat is rotated by a predetermined angle (e.g., 180 degrees) relative to the adjacent second fixing seat. This facilitates modular production, thereby increasing the contact area, distributing pressure, and improving load-bearing capacity at a lower cost.

[0117] In some embodiments, such as Figure 1 and Figure 4 As shown, the lifting device 100 further includes a second actuator 50 and a clamping mechanism 51. The second actuator 50 is configured to drive the clamping mechanism 51 in a clamping position (see...). Figure 1 and Figure 4 The clamping mechanism 51 (shown in solid line) and the release position (see [reference]). Figure 1 and Figure 4 The clamping mechanism 51, shown by the dashed line, moves between the two.

[0118] The clamping mechanism 51 can be any type of clamp. The clamping position is the position where the clamping mechanism 51 clamps the object to be lifted or the vehicle carrying the object to restrict its movement. The releasing position is the position where the clamping mechanism 51 no longer clamps the object to be lifted or the vehicle carrying the object. In some embodiments, such as... Figure 1 As shown, in the clamping position, the clamping mechanism 51 can clamp the cargo vehicle 200 in the first direction (the direction of travel of the cargo vehicle or...) Figure 4 The clamping mechanism 51 clamps the cargo vehicle 200 at both ends in the X direction to restrict its movement in the first direction. By providing the clamping mechanism 51, the object or cargo vehicle to be lifted can be initially positioned before lifting.

[0119] See below for further details. Figure 4 as well as Figures 8 to 10 In some embodiments, the lifting device 100 further includes a positioning mechanism 60. The positioning mechanism 60 may be fixed to the lifting member 30. The positioning mechanism 60 includes a third actuator 61 and a positioning pin 62. The third actuator 61 is configured to drive the positioning pin 62 to move along the second direction between an extended position and a retracted position.

[0120] The positioning mechanism 60 is a device for positioning the lifted object on the lifting plane (a plane perpendicular to the second direction). The extended position is such that the positioning pin 62 extends in the second direction, allowing it to be inserted into and fitted into the positioning hole 202 in the lifted object. The retracted position is such that the positioning pin 62 retracts in the second direction, disengaging from the positioning hole 202. The lifted object may, for example, be the base plate 201 of the carrier 200, the carrier 200 itself, and / or an object mounted on the base plate 201 of the carrier 200.

[0121] Setting up the positioning mechanism 60 allows the object being lifted to be positioned more accurately relative to the lifting device 100.

[0122] In some embodiments, the locating pin 62 is configured to mate with the locating hole 202. See also Figure 11 and Figure 12 , Figure 11 This is a top view schematic diagram of the positioning mechanism of the lifting device in some embodiments of this application. Figure 12 This is an enlarged cross-sectional view of the positioning pin of the positioning mechanism in some embodiments of this application. For example... Figure 12 As shown, at least one of the positioning pins 62 has a contact section 621 and a non-contact section 622 on the outer contour of its cross-section. The contact section 621 engages with the inner surface of the positioning hole 202, while the non-contact section 622 does not engage with the inner surface of the positioning hole.

[0123] The cross-sectional outer contour of the locating pin, as described above, can reduce one degree of positioning freedom, prevent over-positioning, and facilitate movement, installation, and debugging while ensuring accurate positioning.

[0124] In some embodiments, the locating pin 62 is configured to mate with a circular locating hole 202. For example... Figure 12 As shown, the contact section 621 includes two opposing arc segments. The non-contact section 622 includes four straight line segments connected to the four endpoints of the two arc segments, with adjacent straight line segments connected to each other. The lengths of the four straight line segments can be equal. Thus, a locating pin with a rhomboid cross-section can be formed. The rhomboid shape can be considered as a rhombus where two opposing corners are replaced by arcs adapted to contact and engage with the inner surface of a circular locating hole.

[0125] This type of positioning pin is easy to process and can prevent over-positioning, ensuring accurate positioning while facilitating movement, installation, and debugging.

[0126] In one embodiment, the positioning mechanism 60 further includes a groove 63, within which the positioning pin 62 is movable.

[0127] The groove 63 is a channel in which the locating pin slides. The groove 63 can limit the range of motion of the locating pin.

[0128] In one embodiment, see Figure 9 and Figure 10 The third actuator 61 includes a third actuator rod 611. The third actuator rod 611 can be connected to the locating pin 62 via a connector 64. See also... Figure 8 and Figure 9 The positioning mechanism 60 can be fixed to the lifting component 30 via the fixing plate 65.

[0129] Connecting the third actuating rod 611 to the positioning pin 62 via the connector 64 reduces the precision requirements for component machining and facilitates assembly and disassembly. Fixing the positioning mechanism to the lifting component via a fixing plate ensures accurate positioning after the lifting component has been lifted into place.

[0130] The following is combined with Figure 1 and Figure 4 The lifting device 100 is described with a first detection device and a second detection device. In one embodiment, the lifting device 100 includes a first detection device 70 configured to detect whether the object to be lifted has been loaded.

[0131] By setting up a first detection device to detect whether the object to be lifted has been loaded, it is possible to determine whether the object to be lifted has been loaded, thereby avoiding invalid lifting.

[0132] The first detection device 70 can be any sensor capable of detecting the presence of an object. As a non-limiting embodiment, the first detection device may include an optical sensor. The optical sensor is a sensor that detects objects using optical principles. As a non-limiting embodiment, the optical sensor may include a through-beam sensor. A through-beam sensor is a sensor that determines the presence of an object by comparing the states of emitted and received light. When the light emitted by the optical sensor is blocked by the object to be lifted, the optical sensor can receive a signal, thereby determining the presence of the object to be lifted.

[0133] Optical sensors, such as through-beam sensors, can accurately detect the presence of objects in a simple and low-cost manner.

[0134] In one embodiment, the lifting device includes a second detection device 71. The second detection device is configured to detect whether the object to be lifted is tilted.

[0135] The second detection device 71 can be any sensor capable of detecting whether the object to be lifted is tilted. As a non-limiting embodiment, the first detection device may include an optical sensor. As a non-limiting embodiment, the optical sensor may include a through-beam sensor.

[0136] Optical sensors, such as through-beam sensors, can accurately detect whether an object is skewed in a simple and low-cost manner.

[0137] In one embodiment, the first detection device 70 is disposed at the middle of at least one side of the object to be lifted.

[0138] At least one side of the object to be lifted can be any one or more sides of the object to be lifted, as long as it is possible to sense from that side whether the object to be lifted has been loaded. The first detection device 70 is disposed at the middle of at least one side of the object to be lifted so that it can detect whether an object of various sizes has been loaded.

[0139] In one embodiment, the second detection device 71 is disposed near at least one of the four corners of the object to be lifted.

[0140] By placing the second detection device 71 near at least one of the four corners of the object to be lifted, the second detection device 71 (e.g., an optical sensor) can detect the positional deviation of the corner when the height of the corner deviates from a predetermined range, thereby accurately determining whether the object being lifted is tilted.

[0141] In one embodiment, such as Figure 4 As shown, the lifting component 30 includes a crossbeam 34. Rollers 35 are provided at the bottom of the crossbeam 34. The rollers 35 are configured to move on the inclined surface 22 when the movable component 20 moves, thereby causing the crossbeam 34 to move in the second direction.

[0142] Therefore, the crossbeam 34 can move in the second direction by means of the cooperation between one of the slide rails and sliders provided on the crossbeam 34 and the other of the slide rails and sliders provided on the frame of the lifting device.

[0143] By setting the rollers 35 as described above, the thrust required by the first actuator can be reduced and the lifting can be completed smoothly.

[0144] In one embodiment, such as Figure 1 and Figure 4 As shown, the lifting device 100 may also have a guide mechanism 80, which is configured to guide an object into the lifting device 100.

[0145] The guiding mechanism can be any mechanism that can guide objects into the lifting device, such as guide rollers, guide wheels, guide walls, etc. The guiding mechanism can prevent objects (such as cargo vehicles) entering the lifting device 100 from moving skewed.

[0146] In one embodiment, such as Figure 4 As shown, the first actuator 10 may have at least one position detection sensor 12. The position detection sensor 12 is configured to detect whether the movement of the first actuator rod 11 in a first direction has reached a predetermined position.

[0147] The position sensor 12 can be any sensor capable of sensing the position of the object being measured and converting the sensing result into an output signal. The position sensor 12 may include, for example, a contact position sensor (e.g., a limit switch) or a non-contact position sensor (e.g., a proximity sensor). Using a position sensor allows for more precise control of the lifting device's jacking operation, preventing over-lifting or under-lifting.

[0148] In some embodiments, the first actuator 10, the second actuator 50, and / or the third actuator 61 are cylinders.

[0149] The cylinder can stably provide driving force. Furthermore, when the first actuator 10 is a cylinder, since the second direction, which is the lifting direction, is different from the first direction, which is the cylinder extension and retraction direction, even if the cylinder's air supply is insufficient during the pressing process, the first actuator rod of the cylinder is difficult to be pushed to extend or retract by the downward pressure, thereby achieving self-locking of the lifting surface.

[0150] On the other hand, such as Figure 1 As shown, some embodiments of this application also provide a cargo vehicle lifting system 1000. The cargo vehicle lifting system may include a lifting device 100 as described in any of the preceding embodiments and a cargo vehicle 200. The cargo vehicle 200 includes a base plate 201. The base plate 201 is configured to be lifted by the lifting device 100 in the second direction.

[0151] Since the cargo vehicle includes a base plate 201 for carrying cargo that can be lifted separately, there is no need to lift the cargo vehicle, which can improve the lifting capacity and adapt to various lifting needs.

[0152] In some embodiments, such as Figure 3 As shown, the substrate 201 has at least one positioning hole 202.

[0153] The positioning hole 202 is used to mate with the positioning pin 62 on the lifting device 100. The positioning hole allows the base plate 201 of the cargo vehicle to be precisely positioned relative to the lifting device 100. The positioning holes 201 can be provided in any number at any location on the base plate 201. In some embodiments, the positioning holes 201 can be provided near opposite corners of the base plate. This achieves a better positioning effect.

[0154] In some embodiments, the vehicle 200 is an automated guided vehicle (AGV). This facilitates automated conveying, lifting, and other operations.

[0155] In some embodiments, the vehicle 200 is used to load a battery pack. This facilitates stable lifting during battery manufacturing, assembly, and / or maintenance.

[0156] According to some embodiments of this application, see Figures 1 to 6 This application provides a cargo vehicle lifting system 1000. The lifting system 1000 includes a lifting device 100 and a cargo vehicle 200. The cargo vehicle 200 includes a base plate 201 for carrying objects. The lifting device 100 is used to lift the base plate 201. The lifting system 100 may have at least one lifting device. Figure 1 In the illustrated embodiment, a lifting device 100 is provided on each side of the substrate 201. Each lifting device 100 is constructed as follows: The lifting device 100 includes a cylinder 10. The cylinder 10 has a first actuating rod 11. The first actuating rod 11 is movable in the horizontal direction. The first actuating rod 11 is connected to a wedge 20 via a first connecting mechanism 40, allowing the wedge 20 to move horizontally with the movement of the first actuating rod 11. The wedge 20 can be connected via a connecting rod 23 to another wedge located on the other side of the cylinder 10, allowing the two wedges 20 to move horizontally as a unit. Both wedges have an inclined surface 22. The inclined surface 22 is configured to apply a force to the crossbeam 34, which serves as the lifting component 30, when the wedges move horizontally, causing the crossbeam 34 to move vertically. Thus, the horizontal movement of the first actuating rod 11 of the cylinder is converted into a vertical lifting movement of the crossbeam 34, improving the stability of the lifting.

[0157] The working principle of the cargo cart lifting system 1000 according to some embodiments of this application is as follows: The cargo cart 200 is brought to a predetermined position in the lifting device 100. After the cargo cart 200 is in position, the second actuator 50 drives the clamping mechanism 51 to clamp the cargo cart 200. The first actuator rod 11 of the first actuator 10 of the lifting device 100 moves in a first direction to drive the lifting member 30 to move in a second direction, thereby lifting the base plate 201 of the cargo cart 200 out of the cargo cart. After the base plate 201 is lifted into position, the third actuator 61 drives the positioning pin 62 to extend and adapt to the positioning hole 202 in the base plate 201, thereby positioning the base plate 201. After the required operation is completed, the positioning pin 62 disengages from the positioning hole 202 and retracts. After the positioning pin 62 retracts, the first actuator 10 drives the base plate 201 to move in the opposite direction in the second direction and descend onto the cargo cart 200. The second actuator 50 drives the clamping mechanism 51 to release the cargo cart 200. The cargo vehicle 200 leaves the lifting device 100.

[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A lifting device, characterized in that, The lifting device includes: A first actuator, the first actuator including a first actuating rod, the first actuating rod being configured to move along a first direction; A movable component, which is connected to the first actuating rod and configured to move with the movement of the first actuating rod; A lifting member configured to lift an object to be lifted, wherein the lifting member is configured to receive a force applied by the movable member and move in a second direction, and the second direction is different from the first direction; and A first connecting mechanism is provided, wherein the first actuating rod is connected to the movable component via the first connecting mechanism, the first connecting mechanism is configured to transmit the movement of the first actuating rod to the movable component, and the first connecting mechanism is configured to provide a movement margin between the first actuating rod and the movable component in the first direction.

2. The lifting device according to claim 1, characterized in that, The movable component is configured to move along the first direction with the movement of the first actuating rod, and the movable component has an inclined surface that is configured to apply a force to the lifting component as the movable component moves, so that the lifting component moves in the second direction.

3. The lifting device according to claim 2, characterized in that, The tilt angle of the inclined surface relative to the first direction is 10 º to 45 º.

4. The lifting device according to claim 3, characterized in that, The tilt angle of the inclined surface relative to the first direction is 15 º to 30 º.

5. The lifting device according to claim 4, characterized in that, The tilt angle of the inclined surface relative to the first direction is 20° to 25°.

6. The lifting device according to claim 1, characterized in that, The first connecting mechanism includes a connecting rod and a connecting seat. The connecting rod is connected to the first actuating rod, and the connecting seat is connected to the movable component.

7. The lifting device according to claim 6, characterized in that, The connecting rod has a first limiting portion with an increased diameter, a second limiting portion with an increased diameter, and a third portion located between the first limiting portion and the second limiting portion. The connecting seat has a slot, the first limiting portion and the second limiting portion are located on opposite sides outside the slot and are configured to restrict the movement of the connecting rod in the first direction, and the third portion is accommodated in the slot.

8. The lifting device according to claim 7, characterized in that, The slot has a length in the first direction, and the length of the third portion is slightly greater than the length of the slot, such that the connecting rod has the movement margin relative to the connecting seat in the first direction.

9. The lifting device according to claim 7 or 8, characterized in that, The groove is a U-shaped groove.

10. The lifting device according to any one of claims 6 to 9, characterized in that, The connecting seat has a stepped portion, which includes a first surface and a second surface perpendicular to each other. The movable component is seated on the first surface and fixedly connected to the movable component by fasteners disposed on the second surface.

11. The lifting device according to any one of claims 2-5, characterized in that, The movable component includes at least one wedge having the inclined surface, the inclined surface being configured to apply a force to the lifting component as the movable component moves, causing the lifting component to move in the second direction.

12. The lifting device according to any one of claims 6-10, characterized in that, The movable member is configured to move along the first direction with the movement of the first actuating rod. The movable member has an inclined surface, which is configured to apply a force to the lifting member when the movable member moves, causing the lifting member to move in the second direction. The movable member includes at least one wedge having the inclined surface, which is configured to apply a force to the lifting member when the movable member moves, causing the lifting member to move in the second direction.

13. The lifting device according to any one of claims 1-12, characterized in that, The lifting device includes at least two movable parts, which are connected by a linkage.

14. The lifting device according to any one of claims 1-13, characterized in that, The movable component is provided with one of a slide rail and a slider, and the frame of the lifting device is provided with the other of a slide rail and a slider. The slide rail and the slider cooperate with each other so that the movable component can move in the first direction.

15. The lifting device according to any one of claims 1-14, characterized in that, The lifting component has multiple fixed seats on its lifting surface for lifting objects, and each fixed seat has multiple omnidirectional balls.

16. The lifting device according to claim 15, characterized in that, The plurality of fixed seats includes a plurality of first fixed seats, wherein the universal balls on the first fixed seats are arranged in a straight line.

17. The lifting device according to claim 15 or 16, characterized in that, The plurality of fixed seats includes a plurality of second fixed seats, wherein the universal balls on the plurality of second fixed seats are arranged in a triangular pattern.

18. The lifting device according to claim 17, characterized in that, The triangular arrangement of the omnidirectional balls on the plurality of second fixed seats has at least two different orientations.

19. The lifting device according to any one of claims 1-18, characterized in that, The lifting device further includes a second actuator and a clamping mechanism, the second actuator being configured to drive the clamping mechanism to move between a clamping position and a releasing position.

20. The lifting device according to any one of claims 1-19, characterized in that, The lifting device further includes a positioning mechanism fixed to the lifting component. The positioning mechanism includes a third actuator and a positioning pin. The third actuator is configured to drive the positioning pin to move along the second direction between an extended position and a retracted position.

21. The lifting device according to claim 20, characterized in that, The locating pin is configured to fit into a locating hole, and the outer contour of the cross-section of at least one of the locating pins includes a contact section and a non-contact section, wherein the contact section contacts the inner surface of the locating hole, and the non-contact section does not contact the inner surface of the locating hole.

22. The lifting device according to claim 21, characterized in that, The locating pin is configured to fit into a circular locating hole. The contact section includes two opposing arc segments, and the non-contact section includes four straight line segments that are connected to the four endpoints of the two arc segments respectively. Adjacent straight line segments are connected to each other, and the four straight line segments are of equal length.

23. The lifting device according to any one of claims 20-22, characterized in that, The positioning mechanism also includes a slide groove, within which the positioning pin is movable.

24. The lifting device according to any one of claims 20-23, characterized in that, The third actuator includes a third actuating rod, which is connected to the positioning pin via a connector, and the positioning mechanism is fixed to the lifting component via a fixing plate.

25. The lifting device according to any one of claims 1-24, characterized in that, The lifting device includes a first detection device configured to detect whether the object to be lifted has been loaded; and / or the lifting device includes a second detection device configured to detect whether the object to be lifted is tilted.

26. The lifting device according to claim 25, characterized in that, The first detection device and / or the second detection device include an optical detector.

27. The lifting device according to claim 26, characterized in that, The optical detector includes a through-beam detector.

28. The lifting device according to any one of claims 25-27, characterized in that, The first detection device is located at the middle of at least one side of the object to be lifted.

29. The lifting device according to any one of claims 25-28, characterized in that, The second detection device is positioned near at least one of the four corners of the object to be lifted.

30. The lifting device according to any one of claims 2-5, 11 and 12, characterized in that, The lifting component includes a crossbeam with rollers at its bottom. The rollers are configured to move on the inclined surface as the movable component moves, so that the crossbeam moves in the second direction.

31. The lifting device according to any one of claims 6-10, 13-29, characterized in that, The movable component is configured to move along the first direction with the movement of the first actuating rod. The movable component has an inclined surface, which is configured to apply a force to the lifting component when the movable component moves, so that the lifting component moves in the second direction. The lifting component includes a crossbeam with rollers at its bottom, the rollers being configured to move on the inclined surface when the movable component moves, so that the crossbeam moves in the second direction.

32. The lifting device according to any one of claims 1-31, characterized in that, The lifting device also has a guiding mechanism configured to guide an object into the lifting device.

33. The lifting device according to any one of claims 1-32, characterized in that, The first actuator has at least one position detection sensor configured to detect whether the movement of the first actuator rod in a first direction has reached a predetermined position.

34. A cargo vehicle lifting system, characterized in that, The cargo vehicle lifting system includes: The lifting device according to any one of claims 1-33, and A cargo vehicle, the cargo vehicle including a base plate, the base plate being configured to be lifted by the lifting device in the second direction.

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