Electric lifting experiment table

Abstract

The invention discloses an electric lifting experiment table, which belongs to the technical field of experiment tables, and is characterized in that the electric lifting experiment table comprises a table plate and a supporting structure, the table plate is arranged at the top of the supporting structure, and sliding plates at two ends of the table plate are connected with a lifting assembly in a movable cavity of the supporting structure to realize vertical movement; a supporting device is arranged between the table plate and the supporting structure, is composed of a plurality of supporting rods, a linkage assembly and a driving assembly and can coordinately move to support the edge of the table plate, and the effect that the experiment table can stably ascend and descend is achieved.

Description

Technical Field

[0001] This application relates to the technical field of experimental tables, and in particular to an electric lift experimental table. Background Art

[0002] In modern scientific research and teaching activities, experimental tables are indispensable basic equipment. With the continuous progress of technology and the increasing requirements for the comfort and functionality of the working environment, the design of experimental tables is also constantly evolving. Traditional experimental tables have relatively single functions, and nowadays, the demand for experimental tables that can adapt to different experimental needs and flexibly adjust their heights is becoming more and more urgent. An experimental table with adjustable functions can meet the operation needs of people with different heights, improve the comfort of use, and at the same time contribute to improving the accuracy and efficiency of experimental operations, and promote the better development of scientific research and teaching work.

[0003] However, in the current lift experimental table, a certain part bears a large weight. Especially when a large weight is borne at the edge of the experimental table, the lifting process will become unstable, which not only affects the service life of the experimental table, but may also have an adverse impact on the safety and accuracy of experimental operations. Summary of the Invention

[0004] In order to enable the experimental table to lift stably, the present invention provides an electric lift experimental table.

[0005] The electric lift experimental table provided by the present invention adopts the following technical solutions: An electric lift experimental table includes a support structure and a tabletop. The tabletop is horizontally arranged above the support structure. Both ends of the tabletop along the first direction a are fixedly connected with sliding plates. The support structure is provided with a movable cavity, and a lifting component is arranged in the movable cavity. The sliding plate passes through the support structure and extends into the movable cavity, and the sliding plate is connected with the lifting component for moving the sliding plate in the vertical direction. A support device is connected between the tabletop and the support structure. The support device includes a plurality of support rods, a linkage component and a driving component. The support rod includes a first support rod and a second support rod. One end of the first support rod is hinged to the support structure, and the other end is hinged to the first end of the second support rod. The second end of the second support rod is hinged to the edge of the tabletop parallel to the first direction a. A plurality of the second support rods are arranged at intervals along the edge of the tabletop parallel to the first direction a. The second support rod is connected with the linkage component, the linkage component is connected with the driving component, the linkage component is used to coordinate the movement of the driving component and the movement of the second support rod, and the driving component is connected with the support structure. The driving component is used to drive the second support rod to support the edge of the tabletop.

[0006] By adopting the above technical solution, the lifting component is connected to the sliding plate to realize the vertical movement of the tabletop, meeting the adjustment requirements for the height of the tabletop in different usage scenarios; meanwhile, the setting of the support device further enhances the stability and load-bearing capacity of the tabletop. Specifically, for multiple support rods arranged at intervals, the first support rod is hinged to the support structure, and the second support rod is hinged to the edge of the tabletop. Cooperating with the linkage component and the driving component, the driving component can effectively drive the second support rod to support the edge of the tabletop. The linkage component can precisely coordinate the movements of the driving component and the second support rod, ensuring that each part of the tabletop is evenly stressed during the lifting process, reducing the occurrence of shaking or tilting phenomena, and improving the overall safety and reliability of the experimental table.

[0007] Preferably, the driving component includes a driving rack, a driving gear, a synchronous rod, a first bevel gear, a second bevel gear, a driving lead screw, a driving block, and a driving rod. The driving rack is vertically arranged and fixedly connected to the sliding plate. The driving rack passes through the support structure. The driving gear is sleeved on the synchronous rod, and both ends of the synchronous rod are rotatably connected to the support structure. The driving gear meshes with the driving rack. The first bevel gear is sleeved on the synchronous rod, the second bevel gear is sleeved on the driving lead screw, the driving lead screw is rotatably connected to the support structure, the second bevel gear meshes with the first bevel gear, the driving block is sleeved on the driving lead screw, and one end of the driving rod is hinged to the driving block and the other end is connected to the linkage component.

[0008] By adopting the above technical solution, during the use of the electric lifting experimental table, when the sliding plate moves, the driving rack fixedly connected to it will move synchronously. The driving rack meshes with the driving gear, driving the driving gear sleeved on the synchronous rod to rotate, and then causing the synchronous rod to rotate. When the synchronous rod rotates, the first bevel gear sleeved on it also rotates. The first bevel gear meshes with the second bevel gear sleeved on the driving lead screw, thereby driving the driving lead screw to rotate. The rotation of the driving lead screw will cause the driving block sleeved on it to move. The driving block transmits the movement to the linkage component through the hinged driving rod, realizing the driving of the linkage component by the driving component, and finally enabling the second support rod to better support the edge of the tabletop, enhancing the stability of the tabletop during the lifting process.

[0009] Preferably, two sliding plates are both connected with driving components, and both groups of driving components are connected to the linkage component. The linkage component includes a horizontal rod and a telescopic rod. The horizontal rod is hinged to the driving rod. The two driving rods are symmetrically arranged and spaced apart on the horizontal rod. A plurality of telescopic rods are horizontally arranged, and the fixed ends of the plurality of telescopic rods are all connected to the horizontal rod. The telescopic ends of some telescopic rods are rotatably connected to the second support rod through a rotating shaft.

[0010] By adopting the above technical solution, during the use of the electric lifting experimental table, the two sliding plates drive the driving components connected thereto to move. The two sets of driving components transmit power to the linkage component. The horizontal rod in the linkage component can move stably under the action of two symmetrically and spaced driving rods, so that a plurality of telescopic rods connected to the horizontal rod can extend and retract orderly. When the second support rod and the first support rod both move following the tabletop, some of the telescopic rods ensure the normal movement of the second support rod through extension and retraction. At the same time, the telescopic rods provide support for the second support rod, thereby realizing the support of the edge of the tabletop and improving the stability and support effect of the entire experimental table.

[0011] Preferably, a shielding component is provided between the tabletop and the support structure. The shielding component and the support rod are respectively arranged on both sides of the linkage component along the first direction a, and the shielding component is located on the side of the linkage component close to the operator.

[0012] By adopting the above technical solution, the shielding component can isolate components such as the linkage component and the support rod from the operator, reducing the possibility of the operator accidentally touching these components and causing danger. At the same time, it can also play a certain role in protection and aesthetics.

[0013] Preferably, the shielding component includes a first folding plate, a second folding plate and a shaft rod. One end of the first folding plate is rotatably connected to the support structure, and the other end is rotatably connected to the shaft rod. One end of the second folding plate is rotatably connected to the shaft rod, and the other end is rotatably connected to the tabletop.

[0014] By adopting the above technical solution, the shielding component composed of the first folding plate, the second folding plate and the shaft rod, and the components are rotatably connected to each other, can adaptively adjust its shape with the change of the height of the tabletop without affecting the normal lifting of the tabletop; it can also effectively shield the gap between the tabletop and the support structure, reducing the possibility of sundries falling into the equipment and affecting its operation, and at the same time improving the overall aesthetics of the experimental table.

[0015] Preferably, the shaft rod is located on the side of the first folding plate away from the operator.

[0016] By adopting the above technical solution, the possibility of the shaft rod interfering with the operator can be reduced, improving the safety and comfort of operation. At the same time, the layout of the shielding component is optimized to enhance its shielding effect.

[0017] Preferably, a plurality of telescopic rods are provided. The plurality of telescopic rods are respectively arranged on both sides of the horizontal rod along the first direction a. The telescopic rod close to the support rod is connected to the support rod, and the telescopic rod close to the shaft rod is connected to the shaft rod.

[0018] By adopting the above technical solution, the telescopic rod can not only drive the supporting rod to move, but also follow the movement of the shielding component, and can support the edge of the tabletop in multiple directions, ensuring the coordination of the overall structure of the electric lifting experimental table and making the lifting process of the tabletop more stable and reliable.

[0019] Preferably, the support structure includes a fixed plate and a cabinet body. The cabinet bodies are arranged at both ends of the fixed plate along the first direction. The cabinet bodies are fixedly connected to the bottom of the fixed plate. Each of the two cabinet bodies is provided with a movable cavity. The positions of the two movable cavities are symmetrical and are respectively located on the outer sides of the opposite cabinet bodies. The sliding plate extends into the corresponding movable cavity and is slidably connected to the corresponding cabinet body.

[0020] By adopting the above technical solution, the support structure is set in the form of a combination of a fixed plate and a cabinet body, and movable cavities are opened on the sides where the cabinet bodies are far away from each other for the sliding plate to be slidably connected therewith, which can make the layout of the support structure reasonable, effectively support the tabletop, and also ensure the stable sliding of the sliding plate in the movable cavity, improving the stability and structural rationality of the electric lifting experimental table.

[0021] Preferably, the fixed plate is connected with a surrounding plate. The surrounding plate semi-surrounds the fixed plate. The tabletop is slidably abutted against the inner side wall of the surrounding plate.

[0022] By adopting the above technical solution, the tabletop is slidably abutted against the inner side wall of the surrounding plate, which can play a limiting role and ensure the stability and accuracy of the tabletop during the lifting process. The surrounding plate semi-surrounding the fixed plate can protect the components around the fixed plate to a certain extent, improving the safety and durability of the electric lifting experimental table.

[0023] Preferably, the lifting assembly includes a motor, a lifting lead screw and a slider. The motor is connected to the support structure. The lifting lead screw is arranged vertically. The bottom end of the lifting lead screw is fixedly connected to the piston rod of the motor, and the top end is rotatably connected to the support structure. The slider is sleeved on the lifting lead screw. The slider is slidably abutted against the support structure. The slider is fixedly connected to the sliding plate.

[0024] By adopting the above technical solution, when the motor is started, the motor drives the lifting lead screw to rotate, so that the slider can move in the vertical direction along the lifting lead screw, and then drives the sliding plate fixedly connected to the slider to move in the vertical direction, realizing the electric lifting function of the tabletop.

[0025] In summary, the present invention has the following beneficial effects: 1. By connecting the lifting component to the sliding plate, the tabletop can be moved vertically to meet the adjustment requirements for the height of the tabletop in different usage scenarios. At the same time, the setting of the support device further enhances the stability and load-bearing capacity of the tabletop. Specifically, for multiple spaced support rods, the first support rod is hinged to the support structure, and the second support rod is hinged to the edge of the tabletop. In cooperation with the linkage component and the drive component, the drive component can effectively drive the second support rod to support the edge of the tabletop. The linkage component can accurately coordinate the movements of the drive component and the second support rod to ensure that all parts of the tabletop are evenly stressed during the lifting process, reducing the occurrence of shaking or tilting phenomena, and improving the overall safety and reliability of the experimental table.

[0026] 2. The shielding component is located between the tabletop and the support structure, which can effectively shield the gap between the tabletop and the support structure, reducing the possibility of operators accidentally touching these components and causing danger. At the same time, it reduces the possibility of internal components being damaged by external factors. Description of the Drawings

[0027] Figure 1 is an overall structural schematic diagram of an electric lifting experimental table.

[0028] Figure 2 is a top view of the electric lifting experimental table.

[0029] Figure 3 is along Figure 2 the cross-sectional view cut along the A-A direction in

[0030] Figure 4 is Figure 3 the enlarged schematic diagram of part A in

[0031] Figure 5 is along Figure 2 the cross-sectional view cut along the B-B direction in

[0032] Figure 6 is the position schematic diagram of the support rod, linkage component and shielding component.

[0033] Figure 7 is the structural schematic diagram of the drive component.

[0034] Description of the Reference Numerals: 1. Support structure; 11. Fixed plate; 111. First groove; 112. Second groove; 12. Cabinet body; 121. Movable cavity; 2. Enclosure panel; 3. Table board; 31. Sliding plate; 4. Lifting assembly; 41. Motor; 42. Lifting lead screw; 43. Slide block; 5. Support rod; 51. First support rod; 52. Second support rod; 6. Linkage assembly; 61. Horizontal rod; 62. Telescopic rod; 7. Driving assembly; 71. Driving rack; 72. Driving gear; 73. Synchronous rod; 74. First bevel gear; 75. Second bevel gear; 76. Driving lead screw; 77. Driving block; 78. Driving rod; 8. Shielding assembly; 81. First folding plate; 811. Concave part; 82. Second folding plate; 821. Convex part; 83. Shaft rod; 9. Switch button. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments.

[0036] In the description of the embodiments of this application, words such as "for example" or "for illustration" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "for example" or "for illustration" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, the use of words such as "for example" or "for illustration" is intended to present related concepts in a specific manner.

[0037] In the description of the embodiments of this application, the meaning of the term "a plurality" refers to two or more. For example, a plurality of systems refers to two or more systems, and a plurality of screen terminals refers to two or more screen terminals. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the technical features indicated. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The terms "include", "comprise", "have" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0038] An electric lifting experimental table, referring to Figure 1 、 Figure 2 and Figure 3, including a support structure 1 and a tabletop 3. The tabletop 3 is horizontally arranged above the support structure 1, and the support structure 1 is used to support the tabletop 3. The length direction of the tabletop 3 is set as the first direction a. Sliding plates 31 are fixedly connected to both ends of the tabletop 3 along the first direction a, and the sliding plates 31 are arranged vertically. The support structure 1 is provided with a movable cavity 121, and a lifting component 4 is arranged in the movable cavity 121. The sliding plates 31 pass through the support structure 1 and extend into the movable cavity 121, and the sliding plates 31 are connected to the lifting component 4 for moving the sliding plates 31 in the vertical direction. A support device is connected between the tabletop 3 and the support structure 1. The support device is connected to the support structure 1 and is connected to the edge of the tabletop 3 parallel to the first direction a, capable of supporting the edge of the tabletop 3.

[0039] Refer to Figure 1 and Figure 2 , the support structure 1 includes a fixed plate 11 and a cabinet 12. Both the fixed plate 11 and the tabletop 3 are plate-shaped bodies with a rectangular cross-section. The length and width of the fixed plate 11 are the same as those of the tabletop 3. The tabletop 3 is located above the fixed plate 11.

[0040] There are two cabinets 12, and the two cabinets 12 are located at both ends of the fixed plate 11 along the first direction a. The top of the cabinet 12 is fixedly connected to the bottom of the fixed plate 11. A number of support legs are fixedly connected to the bottom of the cabinet 12. In this embodiment, four support legs are provided, respectively located at the four corners of the cabinet 12.

[0041] Refer to Figure 1 and Figure 2 , the fixed plate 11 is fixedly connected with a surrounding plate 2. The surrounding plate 2 semi-surrounds the fixed plate 11. Preferably, the surrounding plate 2 surrounds three side walls of the fixed plate 11. The inner side wall of the surrounding plate 2 is connected to the fixed plate 11, and the outer side wall of the surrounding plate 2 is flush with the outer side wall of the solid. Three side walls of the tabletop 3 are in sliding contact with the inner side wall of the surrounding plate 2.

[0042] Refer to Figure 3 and Figure 4 , each of the two cabinets 12 is provided with a movable cavity 121, and the positions of the two movable cavities 121 are symmetrical, respectively located on the opposite outer sides of the cabinets 12.

[0043] Refer to Figure 3 and Figure 4, each of the two movable chambers 121 is provided with a set of lifting components 4, and the two sets of lifting components 4 are respectively located on the outer sides of the sliding plate 31 opposite to each other. The lifting components 4 are arranged on one side where the two sliding plates 31 are away from each other. The lifting component 4 includes a motor 41, a lifting lead screw 42, and a slider 43. The motor 41 is fixedly connected to the cabinet body 12. The lifting lead screw 42 is arranged vertically. The bottom end of the lifting lead screw 42 is fixedly connected to the piston rod of the motor 41, and the top end is rotatably connected to the support structure 1. The slider 43 is sleeved on the lifting lead screw 42 and is threadedly connected to the lifting lead screw 42. The slider 43 is in sliding contact with the cabinet body 12, and the slider 43 is fixedly connected to the sliding plate 31.

[0044] Start the motor 41, and the motor 41 drives the lifting lead screw 42 to rotate, so that the slider 43 can move in the vertical direction along the lifting lead screw 42, thereby driving the sliding plate 31 fixedly connected to the slider 43 to move in the vertical direction, realizing the electric lifting function of the table board 3.

[0045] Refer to Figure 5 and Figure 6 , the support device includes support rods 5, a linkage component 6, and a drive component 7. There are multiple support rods 5, and all the support rods 5 are connected to the table board 3. The multiple support rods 5 are located on the side of the table board 3 away from the operator.

[0046] Refer to Figure 5 , the support rod 5 includes a first support rod 51 and a second support rod 52. One end of the first support rod 51 is hinged to the cabinet body 12, and the other end is hinged to the first end of the second support rod 52. The second end of the second support rod 52 is hinged to the edge of the table board 3 parallel to the first direction a. The multiple second support rods 52 are arranged at intervals along the edge of the table board 3 parallel to the first direction a.

[0047] Refer to Figure 6 and Figure 7 , the linkage component 6 includes a horizontal rod 61 and a telescopic rod 62. The length direction of the horizontal rod 61 is parallel to the first direction a. The horizontal rod 61 is connected to the drive component 7. There are multiple telescopic rods 62, and their fixed ends are all fixedly connected to the horizontal rod 61. In this embodiment, there are four telescopic rods 62, and the four telescopic rods 62 are evenly divided into two groups. The two groups of telescopic rods 62 are respectively located on both sides of the horizontal rod 61 along the first direction a. Among them, the two telescopic rods 62 in the same group correspond to the two support rods 5 one by one. The telescopic ends of the telescopic rods 62 corresponding to the support rods 5 are fixedly connected with a rotating shaft, and the rotating shaft is rotatably connected to the second support rod 52. The axis of the hinge shaft between the first support rod 51 and the second support rod 52 coincides with the axis of the rotating shaft.

[0048] Refer to Figure 6 and Figure 7 , there are two sets of drive components 7, and the two sets of drive components 7 correspond to the two sliding plates 31 one by one. The two sets of drive components 7 are symmetrically arranged.

[0049] Refer to Figure 4 and Figure 6 As shown in FIGS.

[0050] Refer to Figure 6 and Figure 7 As shown in FIGS.

[0051] Refer to Figure 6 and Figure 7 As shown in FIGS.

[0052] When the sliding plate 31 moves up and down, it drives the driving rack 71 to move. The driving rack 71 drives the driving gear 72 to rotate, and then transmits power through the synchronizing rod 73, causing the first bevel gear 74 to drive the second bevel gear 75 to rotate, thereby causing the driving lead screw 76 to rotate. The driving block 77 moves on the driving lead screw 76 and drives the linkage assembly 6 to move through the driving rod 78.

[0053] Refer to Figure 5 and Figure 7, the shielding assembly 8 includes a first folding plate 81, a second folding plate 82 and a shaft rod 83. The first end of the first folding plate 81 is rotatably connected to the fixed plate 11. A recess 811 is provided at the second end of the first folding plate 81. The shaft rod 83 passes through the recess 811 and is rotatably connected to the first folding plate 81. A protrusion 821 corresponding to the recess 811 is provided at the first end of the second folding plate 82. The protrusion 821 is sleeved on the shaft rod 83 and is rotatably connected to the shaft rod 83; the second end of the second folding plate 82 is rotatably connected to the table board 3. The shaft rod 83 is located on the side of the first folding plate 81 away from the operator.

[0054] When the table board 3 is lifted or lowered, the first folding plate 81 and the second folding plate 82 rotate around the shaft rod 83 to play a shielding role, reducing the possibility that the operator accidentally touches the internal structure and improving safety.

[0055] Refer to Figure 1 , a switch button 9 is provided on the side wall of the fixed plate 11. The switch button 9 is signal-connected to the two motors 41 through a control circuit; the control circuit includes a relay module and an H-bridge drive circuit. The relay module is used to switch the power supply polarity of the motor 41 to realize the forward rotation, reverse rotation or stop of the motor 41, and further control the electric lifting of the table board 3.

[0056] The working principle of this application is as follows: This electric lifting experimental table realizes the electric lifting of the table board 3 through the lifting assembly 4 to meet the operation needs of people of different heights. At the same time, the supporting device uses the driving assembly 7 and the linkage assembly 6 to drive the support rod 5 to support the edge of the table board 3, effectively enhancing the stability of the edge of the table board 3 and extending the service life of the experimental table. The setting of the shielding assembly 8 improves the safety of the operator. The overall structure of the experimental table is more reasonable, improving the overall performance and practicability; at the same time, the cooperation between the shielding assembly 8 and the driving assembly 7 and the linkage assembly 6 also has the effect of supporting the table board 3, further improving the stability of the electric lifting of the table board.

[0057] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An electric lift experimental table, characterized in that: It includes a support structure (1) and a tabletop (3). The tabletop (3) is horizontally arranged above the support structure (1). Sliding plates (31) are fixedly connected to both ends of the tabletop (3) along the first direction a. The support structure (1) is provided with a movable cavity (121). A lifting component (4) is arranged in the movable cavity (121). The sliding plate (31) passes through the support structure (1) and extends into the movable cavity (121). The sliding plate (31) is connected to the lifting component (4) for moving the sliding plate (31) in the vertical direction. A support device is connected between the tabletop (3) and the support structure (1). The support device includes a plurality of support rods (5), a linkage component (6), and a driving component (7). The support rod (5) includes a first support rod (51) and a second support rod (52). One end of the first support rod (51) is hinged to the support structure (1), and the other end is hinged to the first end of the second support rod (52). The second end of the second support rod (52) is hinged to the edge of the tabletop (3) parallel to the first direction a. The plurality of second support rods (52) are arranged at intervals along the edge of the tabletop (3) parallel to the first direction a. The second support rod (52) is connected to the linkage component (6). The linkage component (6) is connected to the driving component (7). The linkage component (6) is used to coordinate the movement of the driving component (7) and the movement of the second support rod (52). The driving component (7) is connected to the support structure (1). The driving component (7) is used to drive the second support rod (52) to support the edge of the tabletop (3).

2. The electric lifting experimental table according to claim 1, characterized in that: The driving component (7) includes a driving rack (71), a driving gear (72), a synchronizing rod (73), a first bevel gear (74), a second bevel gear (75), a driving lead screw (76), a driving block (77), and a driving rod (78). The driving rack (71) is arranged vertically. The driving rack (71) is fixedly connected to the sliding plate (31). The driving rack (71) passes through the support structure (1). The driving gear (72) is sleeved on the synchronizing rod (73). Both ends of the synchronizing rod (73) are rotatably connected to the support structure (1). The driving gear (72) meshes with the driving rack (71). The first bevel gear (74) is sleeved on the synchronizing rod (73). The second bevel gear (75) is sleeved on the driving lead screw (76). The driving lead screw (76) is rotatably connected to the support structure (1). The second bevel gear (75) meshes with the first bevel gear (74). The driving block (77) is sleeved on the driving lead screw (76). One end of the driving rod (78) is hinged to the driving block (77), and the other end is connected to the linkage component (6).

3. The electric lifting experimental table according to claim 2, characterized in that: Both of the two sliding plates (31) are connected with a driving assembly (7), and the two driving assemblies (7) are both connected with the linkage assembly (6). The linkage assembly (6) includes a horizontal rod (61) and a telescopic rod (62). The horizontal rod (61) is hinged to the driving rod (78). The two driving rods (78) are symmetrically arranged and spaced apart on the horizontal rod (61). A plurality of the telescopic rods (62) are horizontally arranged. The fixed ends of the plurality of telescopic rods (62) are all connected with the horizontal rod (61), and the telescopic ends of some of the telescopic rods (62) are rotatably connected to the second support rod (52) through a rotating shaft.

4. The electric lifting experimental table according to claim 3, characterized in that: A shielding assembly (8) is provided between the tabletop (3) and the support structure (1). The shielding assembly (8) and the support rod (5) are respectively arranged on two sides of the linkage assembly (6) along the first direction a, and the shielding assembly (8) is located on the side of the linkage assembly (6) close to the operator.

5. The electric lifting experimental table according to claim 4, characterized in that: The shielding assembly (8) includes a first folding plate (81), a second folding plate (82) and a shaft rod (83). One end of the first folding plate (81) is rotatably connected to the support structure (1), and the other end is rotatably connected to the shaft rod (83). One end of the second folding plate (82) is rotatably connected to the shaft rod (83), and the other end is rotatably connected to the tabletop (3).

6. The electric lift experimental table according to claim 5, wherein: The shaft rod (83) is located on the side of the first folding plate (81) away from the operator.

7. An electric lifting experimental table according to claim 5, characterized in that: A plurality of the telescopic rods (62) are provided. The plurality of telescopic rods (62) are respectively arranged on two sides of the horizontal rod (61) along the first direction a. The telescopic rod (62) close to the support rod (5) is connected to the support rod (5), and the telescopic rod (62) close to the shaft rod (83) is connected to the shaft rod (83).

8. The electric lifting experimental table according to claim 1, characterized in that: The support structure (1) includes a fixing plate (11) and a cabinet body (12). The cabinet bodies (12) are provided at both ends of the fixing plate (11) along the first direction. The cabinet body (12) is fixedly connected to the bottom of the fixing plate (11). Each of the two cabinet bodies (12) is provided with an activity cavity (121). The positions of the two activity cavities (121) are symmetrical and are respectively located on the outer sides of the opposite cabinet bodies (12). The sliding plate (31) extends into the corresponding activity cavity (121) and is slidably connected to the corresponding cabinet body (12).

9. The electric lifting experimental table according to claim 8, characterized in that: The fixing plate (11) is connected with a surrounding plate (2). The surrounding plate (2) semi - surrounds the fixing plate (11). The tabletop (3) is in sliding contact with the inner side wall of the surrounding plate (2).

10. The electric lifting experimental table according to claim 1, characterized in that: The lifting assembly (4) includes a motor (41), a lifting lead screw (42) and a slider (43). The motor (41) is connected to the support structure (1). The lifting lead screw (42) is vertically arranged. The bottom end of the lifting lead screw (42) is fixedly connected to the piston rod of the motor (41), and the top end is rotatably connected to the support structure (1). The slider (43) is sleeved on the lifting lead screw (42). The slider (43) is in sliding contact with the support structure (1), and the slider (43) is fixedly connected to the sliding plate (31).

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