Forklift lift

Abstract

The application provides a forklift lifting device, which comprises a forklift body, an arm support on the forklift body, a forklift assembly connected through a movable arm, a workbench, an assembly space formed in the inside of the movable arm, the workbench being connected with the arm support and located in the assembly space, the workbench being driven by a driving mechanism to move up and down and / or horizontally along the assembly space, a clamping mechanism located above the workbench and arranged in a working direction away from the arm support and towards the forklift assembly, and a rotating mechanism located between the clamping mechanism and the workbench, the rotating mechanism being rotated to realize clamping of the clamping mechanism at different positions. The application adds the workbench and the clamping mechanism, so that the clamping mechanism can enter a narrow space in the air at different heights by adjustment in a small and narrow space, and relevant clamping is realized by the clamping mechanism.

Description

Technical Field

[0001] This invention relates to the field of equipment technology for forklift lifting operations, and in particular to a forklift lifting device. Background Technology

[0002] Existing forklift components can only achieve simple forklift lifting and material or equipment transport, thus failing to maximize their effectiveness, especially in complex environments. Simple lifting and horizontal movement are insufficient to meet current requirements, making them unsuitable for today's demanding applications. Specifically, the following problems exist:

[0003] 1) Forklifts can only lift items by inserting them directly into the bottom of the forklift. They cannot clamp or secure the items, which can easily lead to the equipment or items falling during transportation.

[0004] 2) Only the front forks of the forklift can be raised and lowered. However, the forks themselves are relatively large, and in smaller environments, they cannot be moved or extended, which limits the operating space and makes them unsuitable for further use in spaces such as factory areas.

[0005] 3) Forklifts can only lift and lower, but cannot rotate, which makes it impossible to adjust to various postures during use and makes it difficult to develop and utilize multiple functions. Summary of the Invention

[0006] The purpose of this invention is to provide a forklift lifting device that, by adding a movable arm, a worktable, and a clamping mechanism, enables the forklift to enter small spaces and allows for diverse movement modes, thereby expanding its working range.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0008] A forklift lifting device includes a forklift body, a boom on the forklift body connected to a forklift assembly via a movable arm, the movable arm extending and retracting on the boom under the action of a transmission mechanism; it also includes...

[0009] The workbench has an assembly space formed inside the movable arm. The workbench is connected to the arm and located within the assembly space. Under the action of the drive mechanism, the workbench performs lifting and / or horizontal movements along the assembly space.

[0010] A clamping mechanism is located above the worktable and is positioned away from the boom and toward the working direction of the forklift assembly.

[0011] A rotating mechanism is located between the clamping mechanism and the worktable. The rotating mechanism rotates to enable the clamping mechanism to clamp at different positions.

[0012] As a further improvement of the present invention, the boom forms an assembly frame, and an inner frame parallel to the assembly frame is connected to the assembly frame via connecting rods. The assembly frame and the movable boom form a limiting cavity, and the inner frame is located within the limiting cavity. In this technical solution, the inner frame is selected because, on the one hand, the structure is lighter, which can reduce the load of the entire device and make transportation more convenient; on the other hand, multiple spatial gaps are provided within the frame, which facilitates corresponding space utilization and reassembly adjustments. The parallel structure allows for relative movement between the two. Furthermore, the forming of the limiting cavity ensures that the overall movement is within a certain range, avoiding interference and influence on the outside world, especially in the large direction. Primarily for forklifts, the movement is limited by forklifts on both sides, making it less likely to injure others if the lifted components are heavy.

[0013] As a further improvement of the present invention, the side of the worktable is supported by a support assembly, and a lifting cylinder is provided at the bottom of the worktable to drive the worktable to rise and fall.

[0014] In this technical solution, the addition of a support component ensures that the worktable is stably supported, especially when subjected to greater pressure or gravity, as it can convert forces. The added lifting cylinder can simultaneously provide support and lift the worktable, achieving multiple benefits in one go, and works in conjunction with the support component.

[0015] As a further improvement of the present invention, it also includes an assembly platform located inside the movable arm and between the support assembly and the worktable. The assembly platform is provided with a slide rail assembly along the extension and retraction direction of the arm. The bottom of the worktable is provided with a sliding cavity that moves along the slide rail assembly. The sliding cavity clamps the slide rail assembly and moves along the slide rail assembly.

[0016] In this technical solution, the assembly table and the slide rail assembly exhibit a temporary horizontal movement that does not cause excessive interference, yet effectively ensures their mutual horizontal movement. This allows the worktable to disengage from the limiting cavity within the frame and move further. Furthermore, the clamping arrangement between the sliding cavity and the slide rail assembly, due to the significant weight on the upper part, results in considerable force on the worktable. If the worktable were placed directly on the slide rail assembly, it would be prone to tipping over. The clamping arrangement, creating a localized nesting, provides greater stability.

[0017] As a further improvement of the present invention, there are at least two slide rail assemblies, and a groove is also included between the two slide rail assemblies. A wheel assembly that slides along the groove is provided at the bottom of the worktable. In this technical solution, two slide rail assemblies are provided, which are symmetrically arranged, resulting in better stability. The groove in the middle makes the entire assembly table lighter. The wheel assembly is used for secondary sliding in the middle. The sliding of the wheel and the slide rail are synchronized, and if one of them fails, the other can temporarily replace it.

[0018] As a further improvement of the present invention, at least three assembly supports are provided on the worktable, and the rotating mechanism is a triangular assembly structure assembled on the worktable. In this technical solution, the triangular assembly method ensures that the rotating mechanism is tightly fitted to the assembly table and other structures during rotation, preventing it from easily falling off or loosening. Simultaneously, the stability of the triangle allows for greater load-bearing capacity and stress resistance, facilitating further use in the future.

[0019] As a further improvement of the present invention, an assembly mechanism is provided on the rotating mechanism, and the clamping mechanism is suspended on the worktable via the assembly mechanism. In this solution, the suspended arrangement occupies the assembly space of the structure in the air, making the space more compact and consuming less space.

[0020] In this technical solution, the clamping mechanism is suspended in the air, which expands the assembly space. It can be suspended in front of the worktable, avoiding the limitation of the worktable on its working range. On the other hand, after being suspended, the clamping mechanism can be pushed by external force to extend its range again.

[0021] As a further improvement of the present invention, it also includes a jacking mechanism located on the worktable, which drives the clamping mechanism to move forward and backward in the horizontal direction.

[0022] In this technical solution, the jacking mechanism is used to push the clamping mechanism horizontally. Thus, in a small space, the clamping mechanism can be pushed in, while other mechanisms do not need to enter, so that clamping or detection and other related operations can be achieved.

[0023] As a further improvement of the present invention, the jacking mechanism is provided with a first clamping surface on the side near the clamping mechanism, and the clamping mechanism is provided with a second clamping surface on the side near the jacking component. The first and second clamping surfaces form a clamping cavity, and a friction component is provided on the inner surface of the clamping cavity. In this technical solution, by utilizing the jacking mechanism, the distance between the two clamping surfaces can be adjusted, thus forming a clamping structure with a variable clamping cavity, enabling the clamping of objects of different widths. The addition of the friction component prevents objects that are too smooth to be clamped, thus avoiding the problem of them falling off.

[0024] As a further improvement of the present invention, the jacking assembly includes an assembly and a jacking rod that moves along the assembly. The first clamping surface is assembled on the assembly and is located below the assembly. In this technical solution, the jacking rod pushes the first clamping surface, making the first clamping surface a movable surface, while the second clamping surface in the jacking assembly is a stationary surface, thus achieving adjustable clamping.

[0025] The beneficial effects of this invention are as follows:

[0026] In this invention, firstly, a movable arm is added, which allows for the utilization of a larger space within the forklift assembly body, enabling it to perform further lifting and other functions, essentially making it an additional level of forklift. Although its working range is small, it has multiple functions.

[0027] Secondly, in this invention, the movable arm can extend and retract in the horizontal direction, so that when the forklift is in normal use, it can be retracted to avoid affecting and interfering with other structures, while when a small-scale operation is required, it can be extended separately for independent use.

[0028] In this invention, a worktable and a clamping mechanism are added, so that in a small, confined space, by adjusting the worktable, the clamping mechanism can enter confined spaces at different heights in the air and perform related clamping. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a forklift lifting device provided by the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the forklift assembly provided by the present invention;

[0031] Figure 3 This is a schematic diagram of the assembly platform provided by the present invention;

[0032] Figure 4 A schematic diagram of the sliding mechanism provided by the present invention;

[0033] Figure 5 An assembly diagram of the clamping mechanism provided by the present invention;

[0034] Figure 6 This is a schematic diagram of the jacking mechanism provided by the present invention;

[0035] Figure 7 This is an assembly diagram of the clamping mechanism and the jacking mechanism provided by the present invention;

[0036] In the picture:

[0037] 100. Forklift body; 110. Boom; 120. Forklift assembly; 121. Forklift arm; 122. Bracket; 130. Sliding arm; 131. Inner frame; 140. Transmission mechanism; 150. Workbench; 151. Support assembly; 152. Lifting cylinder; 153. Assembly mechanism; 154. Pushing mechanism; 155. Wheel assembly; 156. Assembly bracket; 157. Assembly body; 158. Push rod; 160. Rotation mechanism; 170. Clamping mechanism; 180. Assembly table; 181. Slide rail assembly; 182. Groove; 200. First clamping surface; 300. Second clamping surface; 400. Friction assembly. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent changes or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0039] This invention discloses a forklift lifting device, comprising a forklift body 100, a boom 110 on the forklift body 100, and a forklift assembly 120 connected to the boom 130 via a movable arm 130. The movable arm 130 extends and retracts along the boom 110 under the action of a transmission mechanism 140. In this embodiment, referring to the accompanying drawings, the forklift assembly 120 includes a forklift arm 121 and a bracket 122. The forklift arm 121 is hinged to the boom 110, and the bracket 122 is fixedly connected to the end of the forklift arm 121. This structure is quite common; specifically, the extension and retraction of the forklift arm 121 along the boom 110 causes the bracket 122 to perform corresponding lifting and lowering movements, thereby supporting goods and completing the corresponding work.

[0040] In this embodiment, many internal structures have been added, enabling the small structures inside the forklift to perform lifting, rotation and other operations, thereby completing different clamping or lifting operations from different directions and angles, and expanding its application range.

[0041] In order to assemble the clamping mechanism, this embodiment also includes a worktable 150. An assembly space is formed inside the movable arm 130. The worktable 150 is provided in the assembly space. The worktable is connected to the arm. Under the action of the drive mechanism, the worktable 150 moves up and down along the assembly space.

[0042] A clamping mechanism 170 is mounted above the worktable 150. The clamping mechanism 170 is located away from the boom 110 and facing the working direction of the forklift assembly 120. This arrangement allows the clamping mechanism to extend outward for further clamping. At the same time, the clamping mechanism 170 can extend and retract horizontally along the worktable 150 to achieve clamping at different positions.

[0043] The rotating mechanism 160 is located between the clamping mechanism 170 and the worktable 150. The rotating mechanism 160 rotates so that the clamping mechanism 170 can rotate in different directions to achieve clamping at different positions.

[0044] In this embodiment, to achieve operation within a small space and fully utilize the large interior space of the forklift, the boom 110 forms an assembly frame, and the movable arm 130 is assembled onto the inner frame 131, which is then assembled parallel to the assembly frame. In this embodiment, the two frames are arranged in parallel, which is not only aesthetically pleasing but also allows for assembly using simple fittings. Furthermore, the dimensional design only needs to be done once, with subsequent adjustments made within the corresponding range. The inner frame is chosen because it is lighter, reducing the overall weight of the device and making handling easier. Additionally, the frame has multiple space gaps, facilitating space utilization and subsequent assembly adjustments. The parallel structure also allows for relative movement between the two components.

[0045] To ensure stable operation of the entire internal structure and avoid potential problems, especially risks during lifting and lowering, the inner frame forms a containment cavity, with a limiting component at the bottom of the cavity. This limiting component, specifically a bracket structure, is added within the containment cavity. When the structure can be lifted and lowered, the limiting component supports the goods; when it is in a limiting position, it ensures stable movement during the movement of goods or the lifting and lowering of the entire structure. The main purpose of the containment cavity is that it also forms a storage cavity, allowing components such as workbenches to be stored away when not in use. During use, their movement is partially restricted, reducing the risk of accidental injury to other structures or personnel during operation, thus enhancing safety.

[0046] To enable the workbench within the inner frame to perform independent, localized work, the workbench 150 is supported on its side by a support assembly 151, and a lifting cylinder 152 is installed at the bottom of the workbench 150 to raise and lower it. In this embodiment, the lifting cylinder 152 raises and lowers, causing the workbench 150 to move independently within the frame. In this embodiment, the top of the inner frame can be partially open, allowing the workbench to rise above the height of the inner frame for higher-level work. The lifting cylinder is directly controlled by a cylinder, making this easy to implement. Adding the support assembly ensures the workbench is stably supported, especially under significant pressure or gravity, as it can transfer force. The added lifting cylinder, while providing support, also raises and lowers the workbench, achieving multiple benefits in conjunction with the support assembly.

[0047] To achieve horizontal movement, an assembly platform 180 is included, located within the movable arm 130 and between the support assembly 151 and the worktable 150. The assembly platform 180 has a slide rail assembly 181 along the telescopic direction of the arm 110. The bottom of the worktable 150 has a sliding cavity that moves along the slide rail assembly 181, clamping the slide rail assembly 181 and moving along it. The slide rail assembly 181 is formed between the assembly platform 180 and the worktable 120, allowing the worktable 150 to move horizontally along the assembly platform 180. In this embodiment, this horizontal movement allows the worktable to break free from the inner frame's constraints and extend horizontally again, thereby driving the front clamping mechanism 170 to clamp at different horizontal positions. In this embodiment, the slide rail assembly specifically consists of a slide rail and a slider. A drive mechanism controls the slider to move the worktable relative to the assembly platform, further increasing the overall working range of the worktable. The assembly table and the slide rail assembly exhibit a temporary horizontal movement that does not cause excessive interference, but effectively ensures mutual horizontal movement. This allows the worktable to disengage from the limiting cavity within the frame and move further with greater freedom. In this embodiment, the sliding cavity and the slide rail assembly are clamped together. Due to the significant weight on the upper part, the worktable experiences considerable force. If it were placed directly on the slide rail assembly, it would be prone to tipping over. However, by clamping the slide rail assembly, a partial nesting is created, resulting in greater stability.

[0048] Furthermore, in this embodiment, to ensure stable sliding and provide backup in case of failure, at least two slide rail assemblies 181 are provided, and a groove 182 is also included between the two slide rail assemblies 181. A wheel assembly 155 is provided at the bottom of the worktable 150, sliding along the groove 182. In this design, two slide rail assemblies are provided symmetrically for better stability, and the groove in the middle reduces the weight of the entire assembly table. The wheel assembly is used for secondary sliding, and the sliding of the wheel and the slide rail are synchronized. Furthermore, if one fails, the other can temporarily replace it.

[0049] In the horizontal direction, to achieve multi-directional rotation, a rotating mechanism 160 is provided between the slide rail assembly 181 and the worktable 150. The rotating mechanism 160 is used to drive the worktable 150 to rotate above the slide rail assembly 181. In this embodiment, by adding a rotating mechanism, a 360-degree all-around working space in the horizontal direction is achieved.

[0050] In this embodiment, to ensure the assembly of the rotating mechanism 160, at least three assembly supports 156 are provided on the worktable 150. The rotating mechanism 160 has a triangular assembly structure and is assembled on the worktable 150. This triangular assembly method ensures a tight fit between the rotating mechanism and the assembly table during rotation, preventing it from easily falling off or becoming loose. Simultaneously, the stability of the triangle allows for greater load-bearing capacity and stress resistance, facilitating further use in the future.

[0051] In this embodiment, to assemble the clamping mechanism 170, an assembly mechanism 153 is provided on the worktable 150, and the clamping mechanism 170 is suspended on the worktable 150 via the assembly mechanism 153. In this embodiment, the clamping mechanism 170 is suspended, thus its clamping is unrestricted, enabling it to clamp items wider than the worktable, etc. This allows for the clamping or stacking of objects or other materials at a distance, height, or over a large area, making it suitable for logistics or object sorting. Suspending the clamping mechanism also expands the assembly space, allowing it to be suspended in front of the worktable, avoiding limitations imposed by the worktable. Furthermore, after being suspended, the clamping mechanism can be pushed by external force to further extend its working range.

[0052] To achieve a better range and user experience, a jacking mechanism 154 located on the worktable 150 is also included. The jacking mechanism 154 drives the clamping mechanism 170 to move forward and backward horizontally. In this embodiment, the jacking mechanism 154 is specifically a propulsion component, such as a push rod, which pushes the clamping mechanism 170 to continue moving forward, allowing it to enter a smaller space and achieve clamping within that space. Using the jacking mechanism for jacking achieves horizontal pushing of the clamping mechanism, thus enabling the clamping mechanism to be pushed into a smaller space without requiring other mechanisms to enter, thereby achieving clamping or detection operations.

[0053] In practical applications, when the components to be clamped are relatively large, such as when clamping steel beams in bridges, this solution can incorporate further clamping features. Specifically, the jacking mechanism 154 has a first clamping surface 200 near the clamping mechanism, and the clamping mechanism 170 has a second clamping surface 300 near the jacking mechanism 154. The first and second clamping surfaces 200 and 300 form a clamping cavity, and a friction component 400 is provided on the inner surface of the clamping cavity. In this solution, the jacking mechanism allows for adjustment of the distance between the two clamping surfaces, creating a clamping structure with a variable clamping cavity, enabling the clamping of objects of varying widths. The addition of the friction component prevents objects that are too smooth to clamp, thus avoiding them falling off. In this solution, the friction component 400 can be a rubber component nested within the metal. This allows the rubber component to rub against the steel beam when the metal clamps it, preventing the steel beam from falling and ensuring proper installation during construction.

[0054] Furthermore, the jacking assembly 154 includes an assembly 157 and a jacking rod 158 that moves along the assembly 157. The first clamping surface 200 is assembled onto the assembly 157 and is located below the assembly 157. In this design, the jacking rod pushes the first clamping surface, making the first clamping surface a movable surface, while the second clamping surface in the jacking assembly is a stationary surface, thus achieving adjustable clamping.

[0055] To ensure the clamping of small objects at the front end, in this embodiment, the clamping mechanism 170 includes a fixed plate and a gripper located on the fixed plate. The gripper moves via a power mechanism to adjust the space between the gripper and the fixed plate, thus completing the clamping. In this embodiment, control during clamping is achieved through the power mechanism and control software. Adding a fixed plate, which is relatively large, allows for the clamping of items. For larger items, it can be clamped onto the fixed plate to complete assembly and other operations. Alternatively, during related data acquisition operations, the detection or acquisition components can be clamped using the clamping mechanism 170, extending them into the detection or acquisition range to achieve data acquisition or detection within a large area or small space, thus expanding its application scope.

[0056] In this embodiment, various control modules are connected within the control console of the forklift body, such as the control of the clamping mechanism 170, the control of the rotating mechanism 160, the control of the jacking mechanism 154, the control of the slide rail assembly 181, the control of the lifting cylinder 152, and the control of the transmission mechanism 140. In this embodiment, the transmission mechanism 140 is essentially the slide rail assembly 181 within the inner frame.

[0057] In this embodiment, the added components not only fulfill the function of the forklift itself, but also enable it to perform lifting, stacking, clamping, and handling operations in multiple fields. Compared to existing forklifts, its functions are more powerful, and it can be applied to special working environments such as confined spaces and wide areas, such as field exploration, picking and clamping materials at heights, and clamping exploration components in the clamping mechanism to achieve large-scale field exploration and data collection. Its application fields are extremely broad, achieving multi-purpose functionality and convenient mobility, thus expanding the technical field and application scope of forklifts. It provides ideas for the application of forklifts and other lifting equipment. Forklifts are generally used in factories, and with these additions, their application and working range in factories are further enhanced.

[0058] The principle and control process of the scheme in this invention are as follows:

[0059] First, for the forklift body, the control room is used to directly control the forklift-related functions; for example, controlling the forklift arm 121 and the bracket 122, so that the forklift assembly 120 can lift and move horizontally, and perform related operations such as lifting within a certain area.

[0060] Secondly, when used in a small space, the transmission mechanism 140 and the lifting cylinder 152 are used to initially raise and lower the worktable 150, moving it to the required clamping or movement range. Specifically, the lifting cylinder 152 controls the raising and lowering, while the slide rail assembly 181 in the transmission mechanism 140 moves horizontally. This achieves initial raising and lowering control and horizontal control. During this process, multiple targeted controls and adjustments are required. In this embodiment, the drive mechanism controls the slide rail assembly 181 and the lifting cylinder 152, while simultaneously controlling these drive mechanism modules... The module is integrated into the control room of the forklift, enabling lifting in a small space. Compared to the original forklift, its lifting range and horizontal movement range are greatly extended, especially in the horizontal direction, which can be extended to a further distance based on the original adjustment of the forklift. At this time, due to space constraints, the weight of the objects clamped or lifted during operation should be less than the weight of the objects that the forklift module 120 can lift. At this time, an assembly mechanism can be added to the workbench, and a small bracket mechanism can be assembled here to perform corresponding bracket lifting or clamping actions. It can be mainly used in a small space.

[0061] Furthermore, when applied in a smaller space, or when the workbench is far from the forklift and too high to be directly accessed, the structure of the workbench can be used to further adjust its spatial position for better performance. At this time, it can achieve initial rotation and lifting. Compared to a small space, its height and horizontal range are further expanded. In particular, the rotation allows for multi-directional, multi-angle movement in multiple directions, not just one. The jacking mechanism 154 allows the individual clamping mechanism 170 to continue moving forward for a wider range of clamping and control, thus enabling better application.

[0062] In this invention, by utilizing the characteristics of the forklift body, internal components are added. When the forklift is moved or not in use, the forklift assembly 120 can be retracted using linkages, etc., so that the entire workbench and other components are enclosed inside the retracted forklift, saving space. Furthermore, the entire device can be operated directly by controlling the forklift assembly, making it easy to transport.

[0063] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0065] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A forklift lifting device, comprising a forklift body, a boom on the forklift body, and a forklift assembly connected to the boom via a movable arm, wherein the movable arm extends and retracts on the boom under the action of a transmission mechanism; characterized in that, It also includes, The workbench has an assembly space formed inside the movable arm. The workbench is connected to the arm and located within the assembly space. Under the action of the drive mechanism, the workbench performs lifting and / or horizontal movements along the assembly space. A clamping mechanism is located above the worktable and is positioned away from the boom and toward the working direction of the forklift assembly. A rotating mechanism is located between the clamping mechanism and the worktable. The rotating mechanism rotates to enable the clamping mechanism to clamp the worktable at different positions. The boom forms an assembly frame, and an inner frame parallel to the assembly frame is connected to the assembly frame by a connecting rod. The assembly frame and the movable boom form a limiting cavity, and the inner frame is located inside the limiting cavity. The top of the inner frame is partially open; An assembly mechanism is provided on the rotating mechanism, and the clamping mechanism is suspended on the worktable through the assembly mechanism; It also includes a jacking mechanism located on the worktable, which drives the clamping mechanism to move forward and backward in the horizontal direction.

2. The forklift lifting device according to claim 1, characterized in that, The workbench is supported by a support assembly on its side, and a lifting cylinder is provided at the bottom of the workbench to drive the workbench to rise and fall.

3. A forklift lifting device according to claim 2, characterized in that, It also includes an assembly table located inside the boom and between the support assembly and the worktable. The assembly table is provided with a slide rail assembly along the boom extension direction. The bottom of the worktable is provided with a sliding cavity that moves along the slide rail assembly. The sliding cavity clamps the slide rail assembly and moves along the slide rail assembly.

4. A forklift lifting device according to claim 3, characterized in that, The slide rail assembly comprises at least two slide rail assemblies and includes a groove located between the two slide rail assemblies. A wheel assembly that slides along the groove is provided at the bottom of the worktable.

5. A forklift lifting device according to claim 1, characterized in that, At least three assembly brackets are provided on the workbench, and the rotating mechanism is a triangular assembly structure assembled on the workbench.

6. A forklift lifting device according to claim 1, characterized in that, The jacking mechanism has a first clamping surface on the side near the clamping mechanism, and the clamping mechanism has a second clamping surface on the side near the jacking component. The first clamping surface and the second clamping surface form a clamping cavity, and a friction component is provided on the inner surface of the clamping cavity.

7. A forklift lifting device according to claim 6, characterized in that, The jacking assembly includes an assembly body and a jacking rod that moves along the assembly body. The first clamping surface is mounted on the assembly body and is located below the assembly body.

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