Lifting device

Abstract

The utility model discloses a lifting device which comprises a base, a workbench, a lifting arm assembly and a supporting seat, according to the lifting device, the design of bottom supporting rollers is omitted, and the problem that the design height cannot be minimized after the supporting rollers are assembled is solved. And meanwhile, extension parts are designed on the two horizontal sides of the workbench, when the lifting device needs to be transferred, the extension parts can be stably supported by supporting bases, after the workbench is supported, the base can be driven by a lifting arm assembly to be lifted upwards, and therefore the requirement for smooth movement of goods between the transferring tray and the workbench is met. On the one hand, a certain gap is formed between the base and the supporting face, an operation space is provided for transfer equipment such as a forklift, on the other hand, it can be guaranteed that relative displacement does not occur between the supporting base and the workbench through the positioning groove below the extending part, and then the stability of the structure is kept.

Description

Technical Field

[0001] The present application relates to the field of elevators, and in particular to a lifting device. Background Art

[0002] Fixed lifts are widely used in the manufacturing industry. They can lift and lower goods to a specified height at a fixed work location. They have the characteristics of stable structure, reliable operation and easy maintenance.

[0003] The goods at the production site need to be transferred between the transfer pallet and the elevator table. Considering the safety and convenience of the transfer, the working height range of the elevator table should be able to match the height of the transfer pallet, so as to directly push or pull the goods to move smoothly between the transfer pallet and the elevator table. The height of the current common transfer pallets is a small height of about 14cm. Therefore, it is necessary to design the minimum working height of the elevator to a smaller size to achieve seamless docking with the transfer pallet. On the other hand, in order to match the actual production needs of the site, the structural setting of the elevator needs to meet the requirements of rapid transfer.

[0004] In the prior art, a Chinese patent (publication number: CN218931655U) discloses a scissor-type lifting platform that is easy to move. The patent scheme has the following shortcomings: First, in the patent scheme, four supporting legs are fixed at the bottom of the lift, and the supporting legs will occupy a certain height space, so that the minimum working height value of the lift table cannot be designed to be a small value, and thus cannot meet the demand for smooth movement of goods between the transfer pallet and the lift table; at the same time, after the lift in the patent scheme drops the high goods to the minimum working height position, the height dimension of the goods from the ground will still be large, which is not conducive to The subsequent cargo pushing and lifting processes are very likely to cause safety accidents; second, when the elevator in the patent scheme is in the lifting and lowering conditions, it is completely supported by the support legs located at the four corners of the fixed seat and in contact with the ground. The middle part of the elevator fixed seat is very easy to deform due to the action of the cargo load, affecting the working stability of the elevator; third, the walking wheel mechanism used for transfer in the patent scheme is composed of a motor, a spiral mechanism, a gear rack mechanism and a crank slider mechanism. It has many components and complex coordination, which leads to high cost of the elevator and difficulty in assembly. Once a failure occurs, the workload of after-sales maintenance will be quite heavy. Utility Model Content

[0005] The embodiment of the present application provides a lifting device that can reduce the height from the ground as much as possible and has a simple structure and good stability.

[0006] The present application discloses a lifting device, comprising:

[0007] A base, the base being disposed on the supporting surface;

[0008] A workbench, wherein the workbench and the base are arranged opposite to each other in the height direction, and an extension portion is arranged on the workbench along a first horizontal direction, and the projections of the extension portion and the base in the height direction do not overlap; a positioning groove is arranged on the lower side of the extension portion;

[0009] A lifting arm assembly, which is connected between the base and the workbench and is used to drive the workbench to move relative to the base in a height direction;

[0010] The support seat has a preset height, and the upper end of the support seat is detachably arranged in the positioning groove, and the lower end of the support seat is supported on the support surface.

[0011] The lifting device of the present application has at least the following beneficial effects:

[0012] The lifting device of the present application includes a base, a workbench, a lifting arm assembly and a support seat. The lifting device of the present application cancels the design of the bottom support roller, avoiding the problem that the design height cannot be minimized after assembling the support roller, thereby meeting the demand for smooth movement of goods between the transfer pallet and the workbench. At the same time, the present application designs extensions on both horizontal sides of the workbench. When the lifting device needs to transfer, the extensions can be stably supported by the support seat. After the workbench is supported, the base can be lifted upward under the drive of the lifting arm assembly, so that the base and the support surface (that is, the ground) have a certain gap, providing an operating space for transfer equipment such as forklifts. On the other hand, the positioning groove under the extension of the present application can ensure that there is no relative displacement between the support seat and the workbench, thereby maintaining the stability of the structure. The minimum ground clearance of the lifting device of the present application is small, which can meet the demand for cargo movement, and the present application provides an operating space for the transfer by designing the support seat, and the design of the bottom support roller can be cancelled, so that the base of the lifting device can completely touch the ground whether it is jacking up or landing, and the stability and support of the overall structure are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0014] Figure 1 It is a structural schematic diagram of the lifting device of an embodiment of the present application;

[0015] Figure 2 yes Figure 1 A schematic diagram from another perspective;

[0016] Figure 3 yes Figure 1 The enlarged view of point A in the middle;

[0017] Figure 4 Figure 1 Schematic diagram of the structure of the middle base;

[0018] Figure 5 yes Figure 4 A schematic diagram from another perspective;

[0019] Figure 6 yes Figure 1 A schematic diagram of the structure of the middle lifting arm assembly;

[0020] Figure 7 yes Figure 1 The structural diagram of the workbench in the middle;

[0021] Figure 8 yes Figure 7 A schematic diagram from another perspective;

[0022] Fig. 9 It is a structural schematic diagram of the support seat in 1;

[0023] Fig.10 This is a schematic diagram of the lifting device during the transfer in the embodiment of the present application;

[0024] Description of the reference numerals is as follows:

[0025] 1. base; 11. first slide slot; 12. first hinge position;

[0026] 2. workbench; 2a. extension; 21. support plate; 22. rectangular support tube; 22a. target rectangular support tube; 2b. positioning groove; 23. second slide groove; 24. second hinge position; 25. thickened plate;

[0027] 3. Lifting arm assembly; 31. First shear arm; 32. Second shear arm; 33. Telescopic drive member; 3a. First connecting end; 3b. Second connecting end; 3c. Third connecting end; 3d. Fourth connecting end; 34. First roller; 35. Second roller;

[0028] 4. Support seat; 4a. Cushion layer; 41. Top plate; 42. Bottom plate; 43. Side plate. DETAILED DESCRIPTION

[0029] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] In order to facilitate understanding of the technical solutions of the embodiments of the present application, the current situation in the industry is first described.

[0032] Sometimes, it is necessary to transfer a fixed lift from one location to another in order to lift or lower goods at other locations. This requires the fixed lift to have walking rollers or corresponding structures or interfaces to facilitate the transfer of standard manual hydraulic forklifts and other transport tools at the production site.

[0033] In the prior art, support rollers are usually designed at the bottom of the elevator, but such a design brings a series of problems. For example, it limits the minimum height of the elevator from the ground. When working, the support rollers support the force, resulting in uneven force on various parts of the bottom. The support roller design structure is complicated and not conducive to maintenance and assembly.

[0034] like Figures 1 to 3 As shown, in order to solve the above problems, an embodiment of the present application provides a lifting device, which includes a base 1, a workbench 2, a lifting arm assembly 3 and a support seat 4;

[0035] The base 1 is arranged on a supporting surface;

[0036] The workbench 2 and the base 1 are arranged opposite to each other in the height direction, and the workbench 2 is provided with an extension portion 2a in a first horizontal direction, and the projection of the extension portion 2a and the base 1 in the height direction do not overlap; a positioning groove 2b is provided at the lower side of the extension portion 2a;

[0037] The lifting arm assembly 3 is connected between the base 1 and the workbench 2, and is used to drive the workbench 2 to move relative to the base 1 in the height direction;

[0038] The support seat 4 has a preset height, and the upper end of the support seat 4 is detachably disposed in the positioning groove 2b, and the lower end of the support seat 4 is supported on the supporting surface.

[0039] The base 1 can be completely supported on a support surface, and the support surface here can be the ground or other flat surfaces.

[0040] The workbench 2 is provided with an extension portion 2a at an edge position in the first horizontal direction. The extension portion 2a is protruded relative to the base 1 along the first horizontal direction, so that the projection of the extension portion 2a and the base 1 in the height direction do not overlap.

[0041] Among them, Figure 3 As shown, a positioning groove 2b is provided on the lower side of the extension portion 2a, the upper end of the support seat 4 is provided in the positioning groove 2b, and the lower end of the support seat 4 can be supported on the supporting surface, and the workbench 2 can be supported in the height direction by the support seat 4.

[0042] Among them, along the height direction, the lifting arm assembly 3 is movably connected between the base 1 and the workbench 2, and the lifting arm assembly 3 drives the base 1 and the workbench 2 to move relative to each other in the height direction.

[0043] The lifting device of the embodiment of the present application includes a base 1, a workbench 2, a lifting arm assembly 3 and a support seat 4. The lifting device of the embodiment of the present application cancels the design of the bottom support roller, avoiding the problem that the design height cannot be minimized after the support roller is assembled, thereby meeting the demand for smooth movement of goods between the transfer pallet and the workbench 2. At the same time, the lifting device of the present application is designed with extensions 2a on both horizontal sides of the workbench 2. When the lifting device needs to be transferred, the extensions 2a can be stably supported by the support seat 4. After the workbench 2 is supported, the base 1 can be lifted upward under the drive of the lifting arm assembly 3, so that the base 1 has a certain gap with the supporting surface (that is, the ground), providing working space for transfer equipment such as forklifts. On the other hand, the positioning groove 2b below the extension 2a of the lifting device of the present application can ensure that there will be no relative displacement between the support seat 4 and the workbench 2, thereby maintaining the stability of the structure. The minimum ground clearance of the lifting device of the present application is relatively small, which can meet the needs of cargo movement. The lifting device of the present application provides an operating space for transfer by designing a support seat 4, and the design of the bottom support roller can be cancelled, so that the base 1 can completely touch the ground regardless of whether the lifting device is lifting or lowering, and the overall structure has good stability and support.

[0044] Preferably, Figure 4 and Figure 5 As shown, a first slide groove 11 and a first hinge position 12 are provided on the base 1; the first slide groove 11 is arranged along the second horizontal direction; the first connecting end 3a of the lifting arm assembly 3 is movably connected to the first slide groove 11, and the second connecting end 3b of the lifting arm assembly 3 is hinged to the first hinge position 12.

[0045] The base 1 is formed by connecting a plurality of structural plates, and has a simple structure and is easy to manufacture.

[0046] Among them, Figure 4 As shown, along the second horizontal direction, the two ends of the base 1 are respectively provided with a first slide groove 11 and a first hinge position 12, and the length direction of the first slide groove 11 is configured as the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

[0047] Among them, Figure 5 As shown, the first connection end 3a of the lifting arm assembly 3 can slide along the second horizontal direction in the first slide slot 11. In order to adapt and install the two lifting arm assemblies 3, two first slide slots 11 and two first hinge positions 12 are set on the base 1.

[0048] In the embodiment of the present application, the base 1 can serve as a load-bearing structure of the lifting device and can be integrally attached to the supporting surface (i.e., the ground) to achieve stable support. At the same time, a first slide groove 11 is provided on the base 1. The first slide groove 11 can provide a movable space for the first connecting end 3a of the lifting arm assembly 3 and can also serve a guiding purpose.

[0049] Preferably, Figure 6 As shown, the first connecting end 3 a of the lifting arm assembly 3 is provided with a first roller 34 , and the first roller 34 can be rollably disposed in the first sliding groove 11 .

[0050] Among them, Figure 6 As shown, a first roller 34 is disposed on a horizontal side wall of the first connecting end 3a of the lifting arm assembly 3 (specifically, the first shear arm 31), and the first roller 34 is rotatably disposed.

[0051] When the lifting arm assembly 3 is driven, the first roller 34 can roll in the first sliding groove 11 .

[0052] In the embodiment of the present application, the rolling cooperation between the first roller 34 and the first slide groove 11 facilitates the smooth movement of the lifting arm assembly 3, improves the flexibility of the structure, and achieves the purpose of labor saving and convenience.

[0053] Preferably, Figure 7 and Figure 8 As shown, the workbench 2 includes a support plate 21 and a plurality of rectangular support tubes 22; the support plate 21 is arranged relative to the base 1 in the height direction, a second slide groove 23 and a second hinge position 24 are arranged below the support plate 21, and the second slide groove 23 is arranged along the second horizontal direction; the third connection end 3c of the lifting arm assembly 3 is movably connected to the second slide groove 23, and the fourth connection end 3d of the lifting arm assembly 3 is hinged to the second hinge position 24; a plurality of the rectangular support tubes 22 are arranged at intervals on the lower side of the support plate 21 along the first horizontal direction.

[0054] Among them, Figure 7 As shown, the upper plane of the support plate 21 is used to support the goods, the second slide groove 23 and the second hinge position 24 are both arranged on the lower plane of the support plate 21, and along the second horizontal direction, the second slide groove 23 and the second hinge position 24 are respectively located at both ends of the support plate 21.

[0055] Among them, Figure 8As shown, the second slide groove 23 is formed by connecting a plurality of plates, the length direction of the second slide groove 23 is consistent with the second horizontal direction, and the third connection end 3c of the lifting arm assembly 3 can move along the second horizontal direction in the second slide groove 23. In order to adapt and install the two lifting arm assemblies 3, two second slide grooves 23 and two second hinge positions 24 are set on the support plate 21.

[0056] Among them, Figure 8 As shown, a plurality of rectangular support tubes 22 are fixed in parallel to the lower plane of the support plate 21. The plurality of rectangular support tubes 22 are arranged at intervals along the first horizontal direction, and the length direction of the rectangular support tubes 22 is parallel to the second horizontal direction.

[0057] Among them, Figure 8 As shown, the number of the rectangular support tubes 22 can be six, eight or even more, and only six are illustrated in the embodiment of the present application.

[0058] In the embodiment of the present application, the workbench 2 is formed by connecting a support plate 21 and a rectangular support tube 22. Multiple rectangular support tubes 22 can improve the support strength, and the rectangular support tubes 22 can be directly welded to the back of the support plate 21, which is simple to manufacture.

[0059] Preferably, Figure 6 As shown, the third connecting end 3 c of the lifting arm assembly 3 is provided with a second roller 35 , and the second roller 35 can be rotatably arranged in the second sliding groove 23 .

[0060] The horizontal side wall of the third connecting end 3c of the lifting arm assembly 3 (specifically, the second shear arm 32) is provided with a second roller 35, and the second roller 35 is rotatably arranged.

[0061] When the lifting arm assembly 3 is driven, the second roller 35 can roll in the second sliding groove 23 .

[0062] In the embodiment of the present application, the rolling cooperation between the second roller 35 and the second slide groove 23 facilitates the smooth movement of the lifting arm assembly 3, improves the flexibility of the structure, and achieves the purpose of labor saving and convenience.

[0063] Preferably, Figure 3 and Figure 6 As shown, in the first horizontal direction, there is at least one target rectangular support tube 22a on both sides of the support plate 21, and the lower side of the target rectangular support tube 22a is connected with a thickening plate 25, and the thickening plate 25 is configured as the extension part 2a.

[0064] Among them, Figure 6As shown, the projection of the support plate 21 in the height direction does not overlap with the base 1 at least partially, and the target rectangular support tube 22 a is disposed at the non-overlapping portion of the projections of the support plate 21 and the base 1 .

[0065] Among them, among the six rectangular support tubes 22 of the embodiment of the present application, along the first horizontal direction, the two rectangular support tubes 22 located on the left side of the support plate 21 are both defined as target rectangular support tubes 22a. Similarly, the two rectangular support tubes 22 located on the right side of the support plate 21 are also defined as target rectangular support tubes 22a.

[0066] Among them, a thickened plate 25 is welded to the lower side of the two target rectangular support tubes 22a on the left or right side of the support plate 21. The thickness of the thickened plate 25 is not less than 1 cm. The thickness of the thickened plate 25 is selected according to actual conditions.

[0067] Among them, Figure 3 As shown, a positioning groove 2b is provided on the side of the thickened plate 25 facing away from the target rectangular support tube 22a. The length and width of the positioning groove 2b match the specifications of the upper end of the support seat 4, and can satisfy the requirement that the upper end of the support seat 4 can be inserted without the support seat 4 having an excessive offset in the positioning groove 2b. For example, the single-sided gap between the side wall of the positioning groove 2b and the upper end of the support seat 4 is 5mm-15mm.

[0068] In order to match and install the two support seats 4 , thickened plates 25 (ie, extension portions 2a ) are provided below the target rectangular support tubes 22 a on the left and right sides of the support plate 21 .

[0069] In the embodiment of the present application, a target rectangular support tube 22a is provided on the side of the support plate 21 and a thickened plate 25 is installed. The design of the thickened plate 25 can provide a processing position for the positioning groove 2b, and at the same time can evenly share the reaction force of the support seat 4. The top of the thickened plate 25 is supported by the target rectangular support tube 22a, and the structural strength is guaranteed. Moreover, during production and manufacturing, the thickened plate 25 only needs to be directly welded to the back side of the target rectangular support tube 22a, which is simple to manufacture and has good practicality.

[0070] Preferably, Figure 3 As shown, the projection of the target rectangular support tube 22 a in the height direction completely covers the thickened plate 25 .

[0071] The total width (width along the first direction) of the two target rectangular support tubes 22 a on the left or right side of the support plate 21 is greater than the width of the thickened plate 25 .

[0072] In the embodiment of the present application, the purpose of designing the total width of the two target rectangular support tubes 22a to be greater than the width of the thickened plate 25 is to ensure that the target rectangular support tube 22a can be in full contact with the thickened plate 25, thereby realizing the transmission of the reaction force and achieving the purpose of uniform force distribution.

[0073] Preferably, Fig. 9 As shown, cushion layers 4a are provided on both end surfaces of the support seat 4 in the height direction.

[0074] Among them, Fig. 9 As shown, the support seat 4 is formed by welding multiple plates, and its side view shape is rectangular. The support plate 21 has a preset height, which is not less than 20 cm. The preset height needs to be greater than the total height of the workbench 2, the lifting arm assembly 3 (when in the retracted state) and the base 1. The specific value is determined according to the actual working conditions.

[0075] Among them, Fig. 9 As shown, the support seat 4 includes a top plate 41, a bottom plate 42 and two side plates 43. The top plate 41 and the bottom plate 42 are arranged opposite to each other, and the two side plates 43 are connected between the top plate 41 and the bottom plate 42 to form a rectangular structure. In the embodiment of the present application, four support seats 4 are respectively arranged at the four corners of the workbench 2.

[0076] Among them, Fig. 9 As shown, the upper and lower end surfaces of the support seat 4 are both provided with a cushion layer 4a, which has elastic deformation capability. The cushion layer 4a is configured as a rubber layer or a sponge layer. In some other embodiments, the cushion layer 4a may also be other materials with deformation capability.

[0077] In the embodiment of the present application, the purpose of providing the cushion layer 4a is to avoid rigid contact between the support seat 4 and the thickened plate 25 and the support surface, thereby avoiding structural damage. At the same time, the design of the cushion layer 4a can also play a certain anti-wear effect.

[0078] Preferably, Figure 2 and Figure 6 As shown, the lifting arm assembly 3 includes a first shear arm 31, a second shear arm 32 and a telescopic drive member 33; the middle part of the first shear arm 31 is hinged with the middle part of the second shear arm 32 to form a shear structure; one end of the first shear arm 31 is configured as a first connecting end 3a, and the other end is configured as a fourth connecting end 3d; one end of the second shear arm 32 is configured as a third connecting end 3c, and the other end is configured as a second connecting end 3b; the two ends of the telescopic drive member 33 are respectively hinged to the first shear arm 31 and the second shear arm 32.

[0079] There are two lifting arm assemblies 3 in total, and the two lifting arm assemblies 3 are respectively located below two sides of the support plate 21 along the first horizontal direction.

[0080] Among them, Figure 6 As shown, the middle parts of the first shear arm 31 and the second shear arm 32 are hinged through a pin to form an X-shaped shear structure.

[0081] The telescopic drive member 33 is configured as a telescopic oil cylinder or a telescopic air cylinder. The two axial ends of the telescopic drive member 33 are respectively hinged to the first shear arm 31 and the second shear arm 32. The telescopic drive member 33 can drive the first shear arm 31 and the second shear arm 32 to move relative to each other through the telescopic movement of the telescopic drive member 33, and the angle formed between the first shear arm 31 and the second shear arm 32 can be changed.

[0082] Among them, Figure 6 As shown, the first connecting end 3a of the first shear arm 31 is rollably disposed in the first sliding groove 11 through a first roller 34 , and the fourth connecting end 3d of the first shear arm 31 is hinged to the second hinge position 24 below the support plate 21 .

[0083] Among them, Figure 6 As shown, the third connecting end 3 c of the second shear arm 32 is rollably disposed in the second sliding groove 23 via a second roller 35 , and the second connecting end 3 b of the second shear arm 32 is hinged to the first hinge position 12 on the base 1 .

[0084] In the embodiment of the present application, when the workbench 2 needs to be lifted, the telescopic driving member 33 is extended, thereby driving the angle between the first shear arm 31 and the second shear arm 32 to become smaller, so that the fourth connection end 3d of the first shear arm 31 and the third connection end 3c of the second shear arm 32 lift the workbench 2 upward, and vice versa, when the telescopic driving member 33 is retracted, the workbench 2 is lowered. The embodiment of the present application lifts and lowers the workbench 2 by designing a shear-type structure, and the structure is stable, simple and reliable.

[0085] Preferably, the two lifting arm assemblies 3 are relatively arranged between the base 1 and the workbench 2 along the first horizontal direction, and the first shear arms 31 of the two lifting arm assemblies 3 are connected by a first reinforcing arm (not shown), and the second shear arms 32 of the two lifting arm assemblies 3 are connected by a second reinforcing arm (not shown).

[0086] The two axial ends of the first reinforcing arm are respectively fixedly connected to the first shear arms 31 of the two lifting arm assemblies 3 , and the length direction of the first reinforcing arm is parallel to the first horizontal direction.

[0087] The axial ends of the second reinforcing arm are respectively fixedly connected to the second shear arm 32 of the lifting arm assembly 3, and the length direction of the second reinforcing arm is parallel to the first horizontal direction.

[0088] In the embodiment of the present application, the two lifting arm assemblies 3 are connected to form a whole through the first reinforcement arm and the second reinforcement arm, which can effectively improve the supporting strength and stability of the structure and is suitable for working conditions with large load capacity.

[0089] The present application embodiment discloses a lifting device, such as Figures 1 to 10As shown, the lifting device includes a base 1, a workbench 2, a lifting arm assembly 3 and a support base 4. The following is a working method of the lifting device of the embodiment of the present application:

[0090] When it is necessary to support the goods, the lower plane of the base 1 completely touches the ground, and the telescopic drive member 33 of the lifting arm assembly 3 is extended and retracted to adjust the workbench 2 to a predetermined height, so that it can be horizontally connected with an external platform to realize cargo transfer.

[0091] When the lifting device needs to be moved to a specified location:

[0092] 1. The telescopic driving member 33 is extended to drive the workbench 2 to be lifted to a certain height, and then the upper end of the support seat 4 is inserted into the positioning groove 2b. After each support seat 4 is installed, the telescopic driving member 33 is retracted, and the workbench 2 is lowered. As the workbench 2 is lowered, the lower end of the support seat 4 is supported on the ground;

[0093] Second, the telescopic drive member 33 continues to retract, so that the base 1 is lifted upward under the retracting action of the telescopic drive member 33, until the base 1 forms a certain distance from the ground, and the telescopic drive member 33 stops retracting. At this time, the workbench 2 is completely supported by the support seats 4 at the four corner positions. Fig.10 As shown;

[0094] 3. The fork of the forklift is extended into the gap between the base 1 and the ground, and then the fork is raised to a higher height, and after the entire base 1 and the workbench 2 are lifted upward, each support seat 4 is separated from the workbench 2, and each support seat 4 is removed;

[0095] 4. After the forklift transports the base 1 and the workbench 2 to the designated location, the forklift installs the support seats 4 according to the location of the workbench 2, and then the forklift lowers the height so that the positioning grooves 2b of the workbench 2 are aligned with the upper ends of the support seats 4, so that the support seats 4 stably support the workbench 2, and the forklift exits;

[0096] Fifth, the telescopic driving member 33 is extended, and the base 1 is lowered to be in full contact with the ground. Then, as the telescopic driving member 33 continues to extend, the workbench 2 is disengaged from the support seat 4, and finally the support seat 4 is removed, and the transfer is completed.

[0097] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A lifting device, characterized in that: include: A base (1), wherein the base (1) is arranged on a supporting surface; A workbench (2), wherein the workbench (2) and the base (1) are arranged opposite to each other in a height direction, and the workbench (2) is provided with an extension portion (2a) in a first horizontal direction, and the projections of the extension portion (2a) and the base (1) in the height direction do not overlap; a positioning groove (2b) is provided on the lower side of the extension portion (2a); A lifting arm assembly (3), the lifting arm assembly (3) being connected between the base (1) and the workbench (2) and being used for driving the workbench (2) to move in a height direction relative to the base (1); A support seat (4), the support seat (4) having a preset height, and the upper end of the support seat (4) is detachably arranged in the positioning groove (2b), and the lower end of the support seat (4) is supported on the supporting surface.

2. The lifting device according to claim 1, characterized in that: The base (1) is provided with a first slide groove (11) and a first hinge position (12); the first slide groove (11) is arranged along a second horizontal direction; the first connecting end (3a) of the lifting arm assembly (3) is movably connected to the first slide groove (11), and the second connecting end (3b) of the lifting arm assembly (3) is hinged to the first hinge position (12).

3. The lifting device according to claim 2, characterized in that: The first connecting end (3a) of the lifting arm assembly (3) is provided with a first roller (34), and the first roller (34) is rollably arranged in the first sliding groove (11).

4. The lifting device according to any one of claims 1 to 3, characterized in that: The workbench (2) comprises a support plate (21) and a plurality of rectangular support tubes (22); The support plate (21) and the base (1) are arranged opposite to each other in the height direction, a second slide groove (23) and a second hinge position (24) are arranged below the support plate (21), and the second slide groove (23) is arranged along the second horizontal direction; the third connecting end (3c) of the lifting arm assembly (3) is movably connected to the second slide groove (23), and the fourth connecting end (3d) of the lifting arm assembly (3) is hinged to the second hinge position (24); A plurality of rectangular support tubes (22) are arranged at intervals on the lower side of the support plate (21) along a first horizontal direction.

5. The lifting device according to claim 4, characterized in that: The third connecting end (3c) of the lifting arm assembly (3) is provided with a second roller (35), and the second roller (35) is rollably arranged in the second sliding groove (23).

6. The lifting device according to claim 4, characterized in that: In the first horizontal direction, there is at least one target rectangular support tube (22a) on both sides of the support plate (21), and the lower side of the target rectangular support tube (22a) is connected to a thickening plate (25), and the thickening plate (25) is configured as the extension part (2a).

7. The lifting device according to claim 6, characterized in that: The projection of the target rectangular support tube (22a) in the height direction completely covers the thickened plate (25).

8. The lifting device according to claim 6 or 7, characterized in that: Cushion layers (4a) are provided on both end surfaces of the support seat (4) in the height direction.

9. The lifting device according to claim 4, characterized in that: The lifting arm assembly (3) comprises a first shear arm (31), a second shear arm (32) and a telescopic driving member (33); The middle part of the first shear arm (31) is hinged with the middle part of the second shear arm (32) to form a shear structure; one end of the first shear arm (31) is configured as a first connecting end (3a), and the other end is configured as a fourth connecting end (3d); one end of the second shear arm (32) is configured as a third connecting end (3c), and the other end is configured as a second connecting end (3b); and the two ends of the telescopic driving member (33) are respectively hinged to the first shear arm (31) and the second shear arm (32).

10. The lifting device according to claim 9, characterized in that: The two lifting arm assemblies (3) are relatively arranged between the base (1) and the workbench (2) along a first horizontal direction, and the first shear arms (31) of the two lifting arm assemblies (3) are connected via a first reinforcing arm, and the second shear arms (32) of the two lifting arm assemblies (3) are connected via a second reinforcing arm.

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