Workbench

Abstract

The invention provides a workbench which can be applied to the technical field of workbenches. The workbench comprises a table top, a lifting assembly and at least one pressing plate. The lifting assembly comprises two lifting frames and two lifting driving assemblies, and a sliding rail is arranged on one side of each lifting frame; the two lifting driving assemblies are arranged at the two ends of one side of the table top correspondingly, and the two lifting driving assemblies are connected with the two lifting frames correspondingly so that the lifting frames can be driven by the lifting driving assemblies to do lifting motion above the table top; the two ends of the pressing plate are movably connected with the sliding rails of the two lifting frames correspondingly so that the pressing plate can move along the sliding rails. The paper files on the workbench are pressed, so that the paper files on the workbench are prevented from moving due to wind blowing, vibration and touch, the interference of paper moving on a user is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of workbenches, and in particular to a workbench. Background Art

[0002] A workbench generally refers to a flat surface or structure used for working, operating, or manufacturing, which provides a stable, flat, and suitable tabletop for various tasks.

[0003] However, for existing workbenches, paper documents are placed on the tabletop only by gravity, and are likely to move due to wind, vibration, or user touch, affecting the work efficiency of users. Summary of the Invention

[0004] This application provides a workbench to solve the technical problem that paper documents placed on the workbench are likely to move, resulting in affecting the work efficiency of users.

[0005] According to the first aspect disclosed in this application, this application provides a workbench, including a tabletop, a lifting assembly, and at least one pressing plate;

[0006] The lifting assembly includes two lifting frames and two lifting drive assemblies. A slide rail is provided on one side of the lifting frame; the two lifting drive assemblies are respectively arranged at both ends of one side of the tabletop, and the two lifting drive assemblies are respectively connected to the two lifting frames to drive the lifting frames to lift above the tabletop through the lifting drive assemblies;

[0007] Both ends of the pressing plate are movably connected to the slide rails of the two lifting frames respectively, so that the pressing plate can move along the slide rails.

[0008] In a feasible implementation manner, a plurality of card slots are arranged along the length direction in the slide rail. Elastic connection structures are respectively arranged at both ends of the pressing plate. The elastic connection structure includes a sliding column and a spring;

[0009] A sliding groove is arranged at the end of the pressing plate, and a limiting ring and a limiting post are arranged in the sliding groove;

[0010] The sliding column is arranged in the sliding groove. One end of the sliding column passes through the limiting ring and is connected to the limiting post. The other end of the sliding column is connected to a sliding ball, and the sliding ball is in snap-fit connection with the card slot;

[0011] The spring is sleeved on the sliding column. One end of the spring abuts against the sliding ball, and the other end of the spring abuts against the limiting ring.

[0012] In a feasible implementation, the lifting frame includes a first horizontal frame body above the tabletop, a second horizontal frame body below the tabletop, and a vertical frame body for connecting the first horizontal frame body and the second horizontal frame body.

[0013] In a feasible implementation, a closable blocking cover is provided at the end of the lifting frame, and the blocking cover is used to open or close the port of the slide rail.

[0014] In a feasible implementation, one side of the blocking cover is hinged to one side of the end of the lifting frame, a lock hole is provided on the blocking cover, and a rotatable lock button is provided at the end of the lifting frame;

[0015] The lock button passes through the lock hole to open and close the blocking cover.

[0016] In a feasible implementation, the lifting drive assembly includes a mounting frame, a guiding structure, a lifting column, and a driving structure;

[0017] The mounting frame is arranged on one side of the tabletop;

[0018] The guiding structure includes a first guiding block and a second guiding block, and the first guiding block and the second guiding block are vertically spaced on the mounting frame;

[0019] The lifting column passes through the first guiding block and the second guiding block and is connected to the lifting frame;

[0020] The driving structure is used to drive the lifting column to move up and down.

[0021] In a feasible implementation, a threaded hole is provided at the lower end of the lifting column, a threaded column is installed in the threaded hole, and the lower end of the threaded column is rotatably connected to the lifting frame.

[0022] In a feasible implementation, the driving structure includes a rotating rod and a transmission frame;

[0023] One end of the rotating rod is hinged to the first guiding block, the other end of the rotating rod is hinged to one end of the transmission frame, the other end of the transmission frame is hinged to the lifting column, and a rotating handle is provided on the transmission frame.

[0024] In a feasible implementation, the lifting transmission assembly further includes a guiding frame, and a guiding rod is provided on the other side of the lifting frame opposite to the slide rail;

[0025] The guiding frame is arranged on one side of the tabletop, a vertical guiding groove is provided on the guiding frame, and the guiding groove is slidably connected to the guiding rod.

[0026] In a feasible implementation, a support frame is further provided at the lower end of the tabletop, and a plurality of casters are provided at the lower end of the support frame.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] A workbench provided by the present application drives the lifting frame to move up and down through a lifting drive assembly, thereby driving the pressing plate to press and fix the paper documents on the tabletop, preventing the paper from moving due to wind, vibration or human touch, so that the paper documents can be firmly fixed on the workbench, facilitating the user to view or fill in more attentively without worrying about the movement and interference of the paper, reducing the interference caused by the paper movement to the user, and improving the work efficiency.

[0029] In addition, since different work tasks may require placing different paper documents on the workbench, the movable pressing plate allows the user to customize the workbench layout according to specific needs to maximize support for their work process and operating habits, further improving their work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0031] Figure 1 FIG. 1 is a schematic structural diagram of a workbench provided by an embodiment of the present application;

[0032] Figure 2 FIG. 2 is a schematic assembly structure diagram of a lifting assembly and a lifting frame provided by an embodiment of the present application;

[0033] Figure 3 FIG. 3 is a schematic structural diagram of an elastic connection structure provided by an embodiment of the present application;

[0034] Figure 4 FIG. 4 is a schematic structural diagram of a lifting frame provided by an embodiment of the present application;

[0035] Figure 5 FIG. 5 is a schematic diagram of the driving principle of a driving structure provided by an embodiment of the present application Figure 1 ;

[0036] Figure 6 FIG. 6 is a schematic diagram of the driving principle of a driving structure provided by an embodiment of the present application Figure 2 。

[0037] DESCRIPTION OF THE REFERENCE NUMERALS:

[0038] 1 - Tabletop;

[0039] 2 - Lifting frame;

[0040] 3 - Card slot;

[0041] 4 - Guide groove;

[0042] 5 - Slide rail;

[0043] 6 - Pressing plate;

[0044] 7 - Hook;

[0045] 8 - Flexible plate;

[0046] 9 - Support frame;

[0047] 10 - Caster;

[0048] 11 - Guide frame;

[0049] 12 - Knob;

[0050] 13 - Threaded column;

[0051] 14 - Second guide block;

[0052] 15 - Mounting frame;

[0053] 16 - Lifting column;

[0054] 17 - First guide block;

[0055] 18 - Rotating rod;

[0056] 19 - Rotating handle;

[0057] 20 - Transmission frame;

[0058] 21 - Slide block;

[0059] 22 - Slide ball;

[0060] 23 - Spring;

[0061] 24 - Sliding column;

[0062] 25 - Limiting column;

[0063] 26 - Lock button;

[0064] 27 - Lock hole;

[0065] 28 - Blocking cover;

[0066] 29 - Hinge.

[0067] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0068] Exemplary embodiments will be described in detail herein, and examples thereof are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0069] A workbench generally refers to a plane or structure for carrying out work, operations, or production, which provides a stable, flat, and suitable tabletop for various tasks. The construction project cost refers to the total cost expected or actually required to complete the construction of a building project. In a construction project, it is usually necessary to calculate and analyze the construction price of the project in order to estimate the budget required for the project construction.

[0070] Since the construction project cost usually requires viewing relevant paper drawings, contracts, bill of quantities, etc. for cost operations, during the work process, in order to facilitate the calculation and analysis of the project cost, the paper documents are usually placed on the workbench for analysis and calculation. Therefore, a workbench is required in the work of construction project cost.

[0071] However, for the existing workbench, the paper documents are placed on the tabletop only by gravity, and it is easy to move due to wind, vibration, or user touch, which affects the progress of the construction project cost operation.

[0072] In view of the above technical problems, the present application proposes a workbench, which presses the paper documents on the workbench to prevent the paper documents on the workbench from moving due to wind, vibration, or touch, reduces the interference caused by paper movement to the user, and improves work efficiency.

[0073] The technical solution of the workbench provided by the present application will be described in detail below through specific embodiments. It should be noted that the following embodiments can exist independently or be combined with each other. For the same or similar content, it may not be repeated in different embodiments.

[0074] Figure 1 is a schematic structural diagram of a workbench provided by an embodiment of the present application. Refer to Figure 1, in some embodiments, the workbench includes a tabletop 1, a lifting assembly, and at least one pressing plate 6; the lifting assembly includes two lifting frames 2 and two lifting drive assemblies, and a slide rail 5 is provided on one side of the lifting frame 2; the two lifting drive assemblies are respectively arranged at both ends on one side of the tabletop 1, and the two lifting drive assemblies are respectively connected to the two lifting frames 2 for driving the lifting frames 2 to move up and down above the tabletop 1 through the lifting drive assemblies; both ends of the pressing plate 6 are movably connected to the slide rails 5 of the two lifting frames 2 respectively, so that the pressing plate 6 can move along the slide rail 5.

[0075] In this embodiment, the lifting drive assembly drives the lifting frame 2 to move up and down, thereby driving the pressing plate 6 to press and fix the paper documents on the tabletop 1, preventing the paper from moving due to wind, vibration or human touch, so that the paper documents can be firmly fixed on the workbench, facilitating the user to view or fill in more attentively without worrying about the movement and interference of the paper, reducing the interference caused by the paper movement to the user, and improving work efficiency.

[0076] In addition, since different work tasks may require placing different paper documents on the workbench, the movable pressing plate 6 allows the user to perform a personalized workbench layout according to specific needs to maximize support for their work process and operation habits, further improving their work efficiency.

[0077] Optionally, a flexible plate 8 made of a flexible material is further provided on the lower side of the pressing plate 6 to prevent the pressing plate 6 from damaging the paper.

[0078] Optionally, a slider 21 is further provided at the end of the pressing plate 6, and the slider 21 is clamped in the slide rail 5 to facilitate guiding the pressing plate 6 to slide in the slide rail 5 by using the slider 21.

[0079] Optionally, a hook 7 is further provided on one side of the tabletop 1.

[0080] Among them, the hook 7 can be used to hang extra documents to keep the desktop clean.

[0081] Refer to Figure 1 and Figure 2 , optionally, the lifting transmission assembly further includes a guide frame 11, and a guide rod is provided on the side of the lifting frame 2 opposite to the slide rail 5; the guide frame 11 is arranged on one side of the tabletop 1, and a vertical guide groove 4 is provided on the guide frame 11, and the guide groove 4 is slidably connected to the guide rod.

[0082] Among them, another guide frame 11 is provided on one side of the tabletop 1, and through the cooperation between the guide groove 4 provided on the guide frame 11 and the guide rod provided on the lifting frame 2, the lifting frame 2 is guided during its up and down movement so that the lifting frame 2 can move in the vertical direction during its up and down movement.

[0083] Meanwhile, the cooperation between the guiding groove 4 and the guiding rod can also keep the lifting rod stable during movement and prevent the lifting frame 2 from shaking.

[0084] Refer to Figure 1 Optionally, a support frame 9 is further provided at the lower end of the tabletop 1, and a plurality of casters 10 are provided at the lower end of the support frame 9.

[0085] Among them, the support frame 9 is used to support the tabletop 1 so that the tabletop 1 can have a suitable working height, and the casters 10 can facilitate the movement of the workbench, so as to flexibly adjust the placement position of the workbench according to work needs.

[0086] Optionally, a height adjustment structure can be provided on the support frame 9, so that the height of the support frame 9 is adjustable to meet the work needs of users of different heights.

[0087] Optionally, a storage cabinet can also be provided at the support frame 9 for storing extra documents to keep the tabletop 1 tidy.

[0088] Specifically, the caster 10 can be a universal wheel. Since the universal wheel can rotate freely 360 degrees and has high flexibility, it can move in any direction, greatly improving the convenience and flexibility of the movement of the workbench.

[0089] Figure 3 The structural schematic diagram of an elastic connection structure provided by an embodiment of the present application, refer to Figure 2 In some embodiments, a plurality of card slots 3 are arranged along the length direction of the slide rail 5. Elastic connection structures are respectively arranged at both ends of the pressing plate 6. The elastic connection structure includes a sliding column 24 and a spring 23; a sliding groove is arranged at the end of the pressing plate 6, and a limiting ring and a limiting column 25 are arranged in the sliding groove; the sliding column 24 is arranged in the sliding groove, one end of the sliding column 24 passes through the limiting ring and is connected to the limiting column 25, the other end of the sliding column 24 is connected to the sliding ball 22, and the sliding ball 22 is in snap-fit connection with the card slot 3; the spring 23 is sleeved on the sliding column 24, one end of the spring 23 abuts against the sliding ball 22, and the other end of the spring 23 abuts against the limiting ring.

[0090] In this embodiment, when it is necessary to adjust the position of the pressing plate 6 on the tabletop 1, push or pull the pressing plate 6, and the pressing plate 6 drives the connecting plate to move along the slide rail 5. At this time, the sliding ball 22 moves in the card slot 3, thereby driving the sliding column 24 to extend into the sliding groove and compress the spring 23, and the snap-fit connection between the sliding ball 22 and the card slot 3 is released. Move the pressing plate 6 until the target position. When the pressing plate 6 stops moving, the spring 23 rebounds to push out the sliding ball 22, so that the sliding ball 22 is snapped into the card slot 3 at the target position, and the pressing plate 6 is positioned through the snap-fit connection between the sliding ball 22 and the card slot 3.

[0091] The sliding ball 22 realizes its functions of movement and clamping through the spring 23, realizes the movement and positioning of the pressing plate 6, enables the pressing plate 6 to flexibly adjust its position to adapt to paper documents of different sizes and types, solves the problem that paper of different specifications cannot be conveniently fixed, and improves the applicability of the pressing plate 6.

[0092] At the same time, the sliding ball 22 and the card slot 3 with a clamping fit can also fix the pressing plate 6 to a certain extent, prevent the pressing plate 6 from moving randomly, and maintain the stability of the pressing on the paper document.

[0093] Specifically, during the working process of the elastic connection structure, the limit ring can limit the sliding column 24 through cooperation with the limiting column 25 to prevent the sliding column 24 from sliding out of the sliding groove. Among them, for the assembly process of the elastic connection structure, the limiting column 25 can be first installed in the sliding groove, and the limiting column 25 has a clearance fit with the sliding groove, so that the limiting column 25 can move in the sliding groove; then the limit ring is installed in the sliding groove, the limit ring is provided with a through hole, and the limit ring has an interference fit with the sliding groove, so that the limit ring is embedded in the sliding groove and cannot move; then one end of the sliding column 24 passes through the limit ring and is fixedly connected to the limiting column 25, and the connection method can be clamping or threaded connection; then the spring 23 is sleeved on the sliding column 24, and one end of the spring 23 abuts against the limit ring; finally, the sliding ball 22 is installed at the end of the sliding column 24 to complete the assembly of the elastic connection structure.

[0094] Refer to Figure 2 , in some embodiments, the lifting frame 2 includes a first horizontal frame body above the table top 1, a second horizontal frame body below the table top 1, and a vertical frame body for connecting the first horizontal frame body and the second horizontal frame body.

[0095] In this embodiment, the lifting frame 2 is set to a U-shaped structure composed of a first horizontal frame body, a second horizontal frame body and a vertical frame body, so that the pressing plate 6 that is not in use can be moved along the slide rail 5 to the lower part of the table top 1 for storage, avoiding interference of the pressing plate 6 with the user's use of the workbench.

[0096] Figure 4 FIG. Figure 3 is a schematic structural diagram of a lifting frame 2 provided by an embodiment of the present application. Refer to

[0097] In this embodiment, the blocking cover 28 is used to open or close the port of the slide rail 5. When the blocking cover 28 is opened, the pressing plate 6 can be loaded into or taken out from the port of the slide rail 5, and then the port of the slide rail 5 is closed by the blocking cover 28 to prevent the pressing plate 6 from sliding out, so that the configuration quantity of the pressing plate 6 can be adjusted as needed.

[0098] Among them, multiple pressing plates 6 are placed on the workbench at the same time, and multiple paper documents can be pressed simultaneously, which is particularly helpful for work processes that require comparing, sorting, or viewing multiple documents at the same time. When the pressing plate 6 is not needed, it can be taken out or slid to the bottom of the tabletop 1 for storage.

[0099] Refer to Figure 4 , optionally, one side of the blocking cover 28 is hinged to one side of the end of the lifting frame 2. A lock hole 27 is provided on the blocking cover 28, and a rotatable lock button 26 is provided at the end of the lifting frame 2; the lock button 26 passes through the lock hole 27 for opening and closing the blocking cover 28.

[0100] Among them, by rotating the lock button 26, the lock button 26 can pass through or not pass through the lock hole 27, so as to open and close the blocking cover 28. This locking method with the cooperation of the lock button 26 and the lock hole 27 has a simple structure and is convenient for opening and closing.

[0101] Optionally, one side of the blocking cover 28 is hinged to one side of the end of the lifting frame 2 through a hinge 29 or a hinge, etc.

[0102] Figure 2 is a schematic assembly structure diagram of a lifting assembly and the lifting frame 2 provided by an embodiment of the present application. Refer to Figure 2 , in some embodiments, the lifting drive assembly includes a mounting frame 15, a guiding structure, a lifting column 16, and a driving structure; the mounting frame 15 is arranged on one side of the tabletop 1; the guiding structure includes a first guiding block 17 and a second guiding block 14. The first guiding block 17 and the second guiding block 14 are vertically spaced and arranged on the mounting frame 15; the lifting column 16 passes through the first guiding block 17 and the second guiding block 14 and is connected to the lifting frame 2; the driving structure is used to drive the lifting column 16 to move up and down.

[0103] In this embodiment, the first guiding block 17 and the second guiding block 14 are used to limit and guide the lifting column 16, so that when the lifting column 16 moves up and down under the drive of the driving structure, it can move in the vertical direction.

[0104] Specifically, the driving mechanism can be a link structure, a cylinder, a screw rod, etc.

[0105] Participate in Figure 2 , optionally, a threaded hole is provided at the lower end of the lifting column 16, and a threaded column 13 is installed in the threaded hole. The lower end of the threaded column 13 is rotatably connected to the lifting frame 2.

[0106] In this embodiment, when fine adjustment of the lifting frame 2 is required, the threaded column 13 can be rotated. Since the threaded column 13 is in threaded connection with the lifting column 16, when the threaded column 13 is rotated, the threaded column 13 will extend into or withdraw from the threaded hole of the lifting column 16 according to the direction of its rotation, and drive the lifting frame 2 to move up and down during this process, so as to realize fine adjustment of the height of the lifting frame 2, so that the pressing plate 6 can adapt to the pressing of documents of different heights.

[0107] Optionally, a knob 12 is further provided on the threaded column 13.

[0108] Among them, the knob 12 can facilitate the rotation of the threaded column 13 to finely adjust the height of the lifting frame 2.

[0109] Refer to Figure 2 、 Figure 5 and Figure 6 Optionally, the driving structure includes a rotating rod 18 and a transmission frame 20; one end of the rotating rod 18 is hinged to the first guide block 17, the other end of the rotating rod 18 is hinged to one end of the transmission frame 20, the other end of the transmission frame 20 is hinged to the lifting column 16, and a rotating handle 19 is provided on the transmission frame 20.

[0110] In this embodiment, by rotating the rotating handle 19, the rotating handle 19 drives the rotating frame, the transmission frame 20 then drives the rotating rod 18 to rotate, and at the same time the transmission frame 20 drives the lifting column 16 to move up and down, so as to drive the lifting frame 2 and the pressing plate 6 to move up and down through the lifting column 16, so as to realize the pressing and relaxation of the paper documents on the tabletop 1.

[0111] The link structure formed by the rotating rod 18 and the transmission frame 20 can quickly complete the lifting drive of the lifting column 16, which is convenient for users to operate and has good stability and reliability.

[0112] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0113] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0114] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0115] In the description of this specification, descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0116] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0117] After considering the specification and practicing the invention disclosed herein, those skilled in the art will readily conceive of other embodiments of this application. This application is intended to cover any variations, uses, or adaptations of this application, which follow the general principles of this application and include the common general knowledge or conventional technical means in the technical field not disclosed in this application. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of this application are pointed out by the appended claims.

[0118] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A workbench, characterized in that: It includes a table top, a lifting assembly and at least one pressing plate; The lifting assembly includes two lifting frames and two lifting drive assemblies, and a slide rail is arranged on one side of the lifting frame; the two lifting drive assemblies are respectively arranged at two ends of one side of the table, and the two lifting drive assemblies are respectively connected to the two lifting frames, so as to drive the lifting frames to move upward and downward above the table through the lifting drive assemblies; The two ends of the pressing plate are movably connected to the slide rails of the two lifting frames respectively, so that the pressing plate can move along the slide rails.

2. The workbench according to claim 1, characterized in that: A plurality of slots are arranged in the slide rail along its length direction, and elastic connection structures are arranged at both ends of the pressing plate, respectively, and the elastic connection structures include a sliding column and a spring; The end of the pressing plate is provided with a sliding groove, and a limiting ring and a limiting column are provided in the sliding groove; The sliding column is arranged in the sliding groove, one end of the sliding column passes through the limiting ring and is connected to the limiting column, and the other end of the sliding column is connected to the sliding ball, and the sliding ball is engaged with the slot; The spring is sleeved on the sliding column, one end of the spring abuts against the sliding ball, and the other end of the spring abuts against the limiting ring.

3. The workbench according to claim 1, characterized in that: The lifting frame includes a first horizontal frame body located above the table top, a second horizontal frame body located below the table top, and a vertical frame body used to connect the first horizontal frame body and the second horizontal frame body.

4. The workbench according to claim 1, characterized in that: The end of the lifting frame is provided with an openable and closable blocking cover, and the blocking cover is used to open or close the port of the slide rail.

5. The workbench according to claim 4, characterized in that: One side of the blocking cover is hingedly connected to one side of the end of the lifting frame, a lock hole is provided on the blocking cover, and a rotatable lock button is provided on the end of the lifting frame; The lock button passes through the lock hole to open and close the blocking cover.

6. The workbench according to any one of claims 1 to 5, characterized in that: The lifting drive assembly includes a mounting frame, a guide structure, a lifting column and a driving structure; The mounting frame is arranged on one side of the table top; The guide structure comprises a first guide block and a second guide block, wherein the first guide block and the second guide block are vertically spaced apart and arranged on the mounting frame; The lifting column passes through the first guide block and the second guide block and is connected to the lifting frame; The driving structure is used to drive the lifting column to move upward and downward.

7. The workbench according to claim 6, characterized in that: A threaded hole is arranged at the lower end of the lifting column, a threaded column is installed in the threaded hole, and the lower end of the threaded column is rotatably connected to the lifting frame.

8. The workbench according to claim 6, characterized in that: The driving structure includes a rotating rod and a transmission frame; One end of the rotating rod is hingedly connected to the first guide block, the other end of the rotating rod is hingedly connected to one end of the transmission frame, the other end of the transmission frame is hingedly connected to the lifting column, and a rotating handle is arranged on the transmission frame.

9. The workbench according to any one of claims 1 to 5, characterized in that: The lifting transmission assembly further comprises a guide frame, and a guide rod is arranged on the other side of the lifting frame opposite to the slide rail; The guide frame is arranged on one side of the table top, and a vertical guide groove is arranged on the guide frame, and the guide groove is slidably connected with the guide rod.

10. The workbench according to any one of claims 1 to 5, characterized in that: A support frame is also arranged at the lower end of the table top, and a plurality of casters are arranged at the lower end of the support frame.

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