An experimental bench with variable benchtop range

Abstract

The application provides an experimental table with variable table top range, comprising: a plurality of annular table bodies, a center table body, a bottom table body and a support column assembly; the plurality of annular table bodies are nested from inside to outside and from small to large, the first layer of annular table body is provided with the center table body, the table top of the annular table body and the table top of the center table body jointly form the experimental table top, the bottom table body is arranged below the center table body, the support column assembly is arranged in the bottom table body, and the support column assembly is provided with the support column at the top; one or more annular table bodies are supported by lifting the support column, so that the table top of the supported annular table body is flush with the table top of the center table body, and the experimental table top range is changed; the holes of the application are arranged in correspondence with the support column of the support column assembly according to a certain positional relationship, the support column assembly supports different annular table bodies from inside to outside by rotating and lifting, and the experimental table top range is changed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of test devices, in particular to a variable tabletop range experiment table. BACKGROUND

[0002] An experiment table is a laboratory tool used to perform various experimental operations and provide a convenient, clean, and safe experimental environment. Experiment tables are usually made of different types of materials, and the design of experiment tables has many advantages, such as durability, high quality, firmness, safety, corrosion resistance, etc. Experiment tables are widely used in experimental operations in scientific fields such as biology, chemistry, geology, etc. They are also used in medical, food processing, pharmaceutical, and other fields.

[0003] In the prior art, the tabletop range of the experiment table is often fixed and difficult to change. Different experiments require different tabletop ranges, so different tabletop ranges of experiment tables are needed. In one experiment, different sizes of tabletops are used simultaneously, which requires multiple experiment tables to achieve, causing inconvenience to experimenters.

[0004] Therefore, there is currently a need for a variable tabletop range experiment table to solve the above problems. SUMMARY

[0005] To overcome the defect that the tabletop size of the experiment table in the prior art is fixed, the present application provides a variable tabletop range experiment table, which realizes variable tabletop size of the experiment table.

[0006] The specific technical solution is as follows:

[0007] A variable tabletop range experiment table, comprising: a ring-shaped table body, a center table body, a bottom table body, and a support column assembly;

[0008] A plurality of ring-shaped table bodies are nested from inside to outside and from small to large, a first layer of ring-shaped table bodies has the center table body fitted therein, the tabletop of the ring-shaped table body and the tabletop of the center table body together form an experiment tabletop, the bottom table body is provided below the center table body, the support column assembly is provided in the bottom table body, and the support column is provided on the top of the support column assembly;

[0009] By lifting the support column, one or more ring-shaped table bodies are supported, so that the tabletop of the supported ring-shaped table body is flush with the tabletop of the center table body, and the experiment tabletop range is changed.

[0010] In one embodiment, each ring-shaped table body has a hole in the bottom, and the support column assembly has a corresponding support column provided thereon;

[0011] The number of holes of each of the annular platforms increases linearly from inside to outside, and all the holes form a plurality of fan-shaped hole groups, which are distributed in rotational symmetry around the center of the annular platform;

[0012] The support column assembly is provided with a plurality of support column groups corresponding to the hole groups, and the number of support columns of each support column group is the same as the number of annular platforms;

[0013] The support columns are arranged corresponding to the position distribution of the holes, and support one or more annular platforms through rotation and lifting.

[0014] In a specific embodiment, the holes are distributed radially along the incircle of the annular platform, and the number of holes on the same radial line decreases linearly from more to less or increases linearly from less to more along the circumference.

[0015] In a specific embodiment, the circumferential angle between two adjacent support column groups is the same, and the circumferential angle between two adjacent hole groups is the same.

[0016] In a specific embodiment, the height of each annular platform is the same, and the top ends of each support column are flush.

[0017] In a specific embodiment, the height of the center platform is higher than the height of the annular platform, and the lifting height of the support column is not higher than the depth of the hole.

[0018] In a specific embodiment, the support column assembly includes a power device, and the power device includes a curved rotating mechanism and a linear transmission mechanism.

[0019] The curved rotating mechanism is used to drive the rotational movement of the support column, and the linear transmission mechanism is used to drive the vertical lifting movement of the support column.

[0020] In a specific embodiment, the bottom platform is further provided with a slot hole, which is uniformly distributed along the circumference of the bottom platform, and the slot hole is used to pass through the bottom platform of the support column.

[0021] In a specific embodiment, the curved rotating mechanism includes a rotating motor, and the linear transmission mechanism includes a pneumatic cylinder or a telescopic hydraulic cylinder or an electric push rod.

[0022] In a specific embodiment, the bottom platform is further provided with a positioning assembly, which is used to position the initial position of the annular platform.

[0023] The positioning assembly comprises pins / pin holes arranged on the bottom table body surface and pin holes / pins arranged on each ring table body corresponding to the pins / pin holes, and the pins / pin holes are symmetrically distributed along the diameter of the inscribed circle of the bottom table body.

[0024] Advantages:

[0025] The application provides an experimental table with variable table surface range, which is provided with a ring table body, a bottom table body and a support column assembly; the bottom of the ring table body is provided with holes, the holes are distributed in a certain positional relationship, and when the support column assembly is rotated to different angles in sequence, different ring table bodies are sequentially lifted from inside to outside by the support column, the table surface range of the experimental table is changed, the same experimental table surface can be changed, and the actual needs of experiments are met. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 The overall structure of the experimental table is provided for the embodiment of the application.

[0028] Figure 2 The cross-sectional view of the experimental table is provided for the embodiment of the application.

[0029] Figure 3 The top view of the experimental table is provided for the embodiment of the application.

[0030] Figure 4 The overall structure of the experimental table in the minimum area state is provided for the embodiment of the application.

[0031] Figure 5 The overall structure of the experimental table in the maximum area state is provided for the embodiment of the application.

[0032] Figure 6 The middle table body structure view of the experimental table is provided for the embodiment of the application.

[0033] Figure 7 The bottom platform structure view of the experimental table is provided for the embodiment of the application.

[0034] Figure 8 The support column structure schematic view of the experimental table is provided for the embodiment of the application.

[0035] Figure 9A perspective view of the overall structure of the experimental bench proposed in Embodiment Three of the present application;

[0036] Figure 10 A middle bench body structure view of the experimental bench proposed in Embodiment Three of the present application;

[0037] Figure 11 A top view of the experimental bench proposed in Embodiment Three of the present application.

[0038] Reference signs:

[0039] 1 - bottom bench body; 101 - center bench body; 2 - middle bench body; 21 - annular bench body; 201 - first annular bench body; 202 - second annular bench body; 203 - third annular bench body; 204 - fourth annular bench body; 205 - fifth annular bench body; 3 - support column assembly; 31 - support column group; 311 - support column; 312 - slot hole; 301 - curved rotation mechanism; 302 - straight line transmission mechanism; 4 - hole group; 41 - hole line; 401 - hole; 51 - pin; 52 - pin hole. DETAILED DESCRIPTION

[0040] Hereinafter, various embodiments of the present disclosure will be described more fully. The present disclosure can have various embodiments, and adjustments and changes can be made therein. However, it should be understood that there is no intention to limit various embodiments of the present disclosure to the specific embodiments disclosed herein, but the present disclosure should be understood to encompass all adjustments, equivalents, and / or alternatives falling within the spirit and scope of various embodiments of the present disclosure.

[0041] Hereinafter, the term "include" or "may include" used in various embodiments of the present disclosure indicates the presence of the disclosed functions, operations, or elements, and does not limit the addition of one or more functions, operations, or elements. In addition, as used in various embodiments of the present disclosure, the terms "include", "have", and their synonyms merely mean to indicate the presence of a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be understood as first excluding the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of one or more features, numbers, steps, operations, elements, components, or combinations of the foregoing.

[0042] In various embodiments of the present disclosure, the expression "or" or "at least one of A or / and B" includes any combination of the listed terms or all combinations thereof. For example, the expression "A or B" or "at least one of A or / and B" can include A, can include B, or can include both A and B.

[0043] The expressions used in the various embodiments of the disclosure, such as "first", "second", etc., can modify various constituent elements in the various embodiments, but can not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the disclosure, a first element can be referred to as a second element, and likewise, a second element can be referred to as a first element.

[0044] It should be noted that if a description connects one constituent element to another constituent element, the first constituent element can be directly connected to the second constituent element, and a third constituent element can be "connected" between the first constituent element and the second constituent element. Conversely, when one constituent element is "directly connected" to another constituent element, it can be understood that there is no third constituent element between the first constituent element and the second constituent element.

[0045] The term "user" used in the various embodiments of the disclosure can indicate a person using an electronic device or a device (for example, an artificial intelligence electronic device) using an electronic device.

[0046] The terms used in the various embodiments of the disclosure are only for the purpose of describing specific embodiments and are not intended to limit the various embodiments of the disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly dictates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of the disclosure belong. The terms such as those defined in a generally used dictionary will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of the disclosure.

[0047] Embodiment 1

[0048] An experimental bench with a variable benchtop range, as Figure 1 shown, comprises a bottom bench body 1, a hollow middle bench body 2 composed of a plurality of sets of concentrically arranged annular bench bodies 21, and a rotatable and liftable support column assembly 3;

[0049] A plurality of annular platforms 21 are nested from inside to outside and from small to large, the first layer of annular platforms 21 is concentrically sleeved with a center platform 101, the center platform 101 is provided below with a bottom platform 1, the bottom platform 1 is provided inside with a support column assembly 3; the support column assembly 3 is provided at the top with a support column 311; the support column 311 is provided below with a plurality of linear transmission mechanisms 301; different linear transmission mechanisms 301 are used to control the vertical lifting movement of different support columns 311; different support columns each correspond to different annular platforms 21;

[0050] According to the use requirements, one or more annular platforms 21 are supported by the plurality of motors controlling different support columns 311, and the table surface of the annular platform 21 and the table surface of the center platform 101 together form an experimental table surface; the area of the table surface is variable.

[0051] However, the embodiment still has the problems of high manufacturing cost and complex structure leading to unstable structure.

[0052] Embodiment 2

[0053] As shown in Figure 1 , a variable table surface range experimental table includes a bottom platform 1, a hollow middle platform 2 composed of a plurality of concentrically arranged annular platforms 21, and a rotatable and liftable support column assembly 3;

[0054] Specifically, in the embodiment, the platform surface shapes of the bottom platform 1, the middle platform 2, and the annular platforms 21 are all circular, and the specific shape of the table surface is not limited; it is designed according to actual use needs;

[0055] As shown in Figure 1 , Figure 3 , and Figure 5 , a plurality of annular platforms 21 are nested from inside to outside and from small to large, the first layer of annular platforms 21 is concentrically sleeved with a center platform 101, the table surface of the annular platform 21 and the table surface of the center platform 101 together form an experimental table surface;

[0056] As shown in Figure 1 , Figure 7 , the center platform 101 is provided below with a bottom platform 1, and the bottom platform 1 is provided inside with a support column assembly 3;

[0057] The design of the center platform 101 helps to fix the middle platform 2, making the overall structure more stable, and plays a limiting and guiding role for the up and down movement of the middle platform 2;

[0058] Specifically, as shown in Figure 3As shown, in the embodiment, the middle table body 2 comprises a first annular table body 201, a second annular table body 202, a third annular table body 203, a fourth annular table body 204, and a fifth annular table body 205. The annular table bodies 21 are arranged concentrically, and are sequentially connected from small to large and from inside to outside.

[0059] Specifically, in the embodiment, the first annular table body 201 has an inner diameter of 10-12 cm and is concentrically connected with the central table body 101; the second annular table body 202 has an inner diameter of 12-14 cm and is concentrically connected with the first annular table body 201; the third annular table body 203 has an inner diameter of 14-16 cm and is concentrically connected with the second annular table body 202; the fourth annular table body 204 has an inner diameter of 16-18 cm and is concentrically connected with the third annular table body 203; and the fifth annular table body 205 has an inner diameter of 18-20 cm and is concentrically connected with the fourth annular table body 204; thus, the area / diameter of the table top can be changed.

[0060] The specific number and size of the inner and outer diameters of the annular table bodies 21 are not limited.

[0061] Specifically, in the embodiment, the diameter of the central table body 101 is 10 cm, and the diameter of the central table body 101 can be designed according to actual needs, and the specific diameter of the central table body 101 is not limited.

[0062] The middle table body 2 is movably connected with the central table body 101 in the direction of the central table body 101, and the middle table body 2 is movably arranged on the bottom table body 1.

[0063] Further, each annular table body 21 is provided with a hole 401, all the holes 401 are arranged in a certain regular period, and the support column assembly 3 is provided with a support column 311, which is arranged in position distribution corresponding to the hole 401; so as to support the support column assembly 3 to rotate, lift, and sequentially support different annular table bodies 21 from inside to outside, so that they are flush with the table top of the central table body 101, and the range of the experimental table top is changed.

[0064] Further, each annular table body 21 is provided with a hole 401; according to the distance from the center of each annular table body 21 to the middle table body 2, the number of holes 401 of each annular table body 21 increases one by one from near to far.

[0065] Specifically, as Figure 6As shown, the first annular platform body 201 is not provided with the hole 401, the second annular platform body 202 is provided with four holes 401, the third annular platform body 203 is provided with eight holes 401, the fourth annular platform body 204 is provided with twelve holes 401, and the fifth annular platform body 205 is provided with sixteen holes 401;

[0066] Further, as shown in the figure, Figure 6 All the holes 401 form a fan-shaped hole group 4, which is rotationally symmetrically distributed with the center of the annular platform body 21 as the rotation center; the holes 401 in the hole group 4 are distributed along the radial direction of the middle platform body 2 to form a plurality of hole lines 41;

[0067] Further, the holes 401 are distributed along the radial direction of the inscribed circle of the annular platform body 21, the number of the holes 401 on the same radial line periodically decreases or increases linearly along the circumferential direction; and the number and corresponding distribution position of the holes 401 in each hole group 4 are the same.

[0068] In the embodiment, there are four hole groups 4, the number of the holes 401 in the hole line 41 in each group decreases from four to one in the clockwise direction, and decreases by one each time; so that the annular platform body 21 can be sequentially lifted from the inside to the outside by rotating the support column assembly 3 by a certain preset angle, and lifted to the same level as the center platform body 101, or sequentially lowered from the outside to the inside, so that the annular platform body 21 falls on the table top of the bottom platform body 1.

[0069] The support columns 311 of the support column assembly 3 are arranged into support column groups 31 corresponding to the hole groups 4;

[0070] As shown in the figure, Figure 2 The support column assembly 3 is arranged in the bottom platform body 1, as shown in the figure, Figure 8 The support column assembly 3 includes a plurality of lifting support column groups 31; the plurality of support columns 311 in each lifting support column group 31 are distributed along the radial direction; the number of the support columns 311 in each lifting support column group 31 is the same as the number of the annular platform bodies 21;

[0071] Specifically, in the embodiment, four lifting support column groups 31 are arranged on the support column assembly 3, and five support columns 311 in each lifting support column group 31 are distributed along the radial direction.

[0072] The position distribution of the plurality of support columns 311 on the lifting support column group 31 matches the position distribution of the holes 401 on the hole line 41, so as to sequentially lift different annular platform bodies 21 by the support columns 311 when the support column assembly 3 is sequentially rotated to different angles.

[0073] Further, the top of all support columns 311 is flush, the height of all annular platforms 21 is the same, and the height of the central platform 101 is higher than the height of the annular platforms 21, and the rising height of the support columns 311 is not higher than the depth of the accommodating holes 312.

[0074] The design that the top of the support columns 311 is flush and the height of all annular platforms 21 is the same makes the height of all annular platforms 21 the same after rising, and the platform composed of all annular platforms 21 is relatively flat.

[0075] Further, preferably, the circumferential angle between two adjacent lifting support column groups 31 is the same, and the circumferential angle between two adjacent hole groups 4 is the same.

[0076] Further, as shown in Figure 1 、 Figure 2 The support column assembly 3 further comprises a curved rotating mechanism 301 and a linear transmission mechanism 302; the curved rotating mechanism 301 is used to drive the rotating movement of the support columns 311, and the linear transmission mechanism 302 is used to drive the vertical lifting movement of the support columns 311.

[0077] Optionally, the curved rotating mechanism 301 comprises a rotating motor; and the linear transmission mechanism 302 comprises a pneumatic cylinder or a telescopic hydraulic cylinder or an electric push rod.

[0078] Specifically, in the embodiment, the curved rotating mechanism 301 comprises a rotating motor, and through the rotation of the rotating motor, the rotation of the support column assembly 3 is driven, so that the corresponding relationship between the support columns 311 of the support column assembly 3 and the hole 401 of each annular platform 21 can be changed, and the support columns 311 can be moved out of the range of the hole 401 of the annular platform 21 to be jacked up.

[0079] Under the driving of the linear transmission mechanism 302, the support column assembly 3 moves up and down in the vertical direction, acts on the annular platforms 21 of the middle platform 2, and provides power for the vertical movement, thereby supporting the middle platform 2. The power for the vertical movement of the linear transmission mechanism 302 is transmitted to the middle platform 2 through the support column assembly 3, and the middle platform 2 is jacked up to the same height as the central platform 101, thereby changing the area of the experimental platform.

[0080] Further, the bottom platform 1 is provided with grooves 312 matched with the lifting support column groups 31, the angles between the grooves 312 are the same, and the grooves 312 are distributed along the radial direction of the bottom platform 1. The support columns 311 of the support column assembly 3 can pass through the grooves 312 and contact the middle platform 2.

[0081] Further, preferably, the bottom platform 1 is further provided with a positioning assembly, and the positioning assembly is used to position the initial position of the annular platform 21.

[0082] The positioning assembly comprises pins 51 or pin holes 52 arranged on the tabletop of the bottom base 1, and pin holes 52 or pins 51 arranged on each annular base 21 corresponding to the pins 51 or pin holes 52, wherein the pins 51 or pin holes 52 are symmetrically distributed along the diameter of the bottom base 1;

[0083] Specifically, the pins 51 for positioning are arranged on the bottom base 1 and are sequentially distributed along the diameter of the bottom base 1, and each annular base 21 is provided with a pin hole 52 corresponding to the pin 51, so that accurate positioning can be achieved. The pin hole 52 is in the shape of a circular hole, and each annular base 21 is provided with two pin holes 52 at the bottom, which are symmetrically arranged on the diameter of the middle base 2. The pin 51 and the pin hole 52 are used to position the initial position of the middle base 2.

[0084] The initial corresponding relationship between all the support columns 311 of the support column assembly 3 and the hole 401 of the middle base 2 can be fixed by positioning the initial position of the middle base 2 through the pins 51 for positioning and the pin holes 52.

[0085] The design of the pins 51 and the pin holes 52 can reduce the labor intensity of calibrating the initial position during use, and can also obtain high calibration accuracy, is convenient to install, and can obtain good results, and can optimize the experimental experience of the experimenters.

[0086] As shown in Figure 4 , Figure 5 When the area of the tabletop needs to be expanded, the rotating motor is started as needed to rotate the support column assembly 3. Each time, the rotating angle is 18° in the clockwise direction. When the rotating angle is 18° in the clockwise direction from the initial position, the first annular base 201 can be supported. When the rotating angle is 18° in the clockwise direction again or the rotating angle is 36° in the clockwise direction from the initial position, the first annular base 201 and the second annular base 202 can be supported. When the rotating angle is 18° in the clockwise direction again or the rotating angle is 54° in the clockwise direction from the initial position, the first annular base 201, the second annular base 202, and the third annular base 203 can be supported. When the rotating angle is 18° in the clockwise direction again or the rotating angle is 72° in the clockwise direction from the initial position, the first annular base 201, the second annular base 202, the third annular base 203, and the fourth annular base 204 can be supported. In this way, when the rotating angle is 90° in the clockwise direction from the initial position, the first annular base 201, the second annular base 202, the third annular base 203, the fourth annular base 204, and the fifth annular base 205 can be simultaneously supported.

[0087] Since the embodiment is provided with five annular bases 21, the rotating number is set to five, and each annular base 21 is provided with four support columns 311, so the angle of each rotation is designed to be 360 / 4 / 5 = 18 degrees.

[0088] Similarly, if the number of layers of the annular platform body 21 is N, the number of rotations is N, and the number of support columns 311 corresponding to each layer of the annular platform body 21 is M, the rotation angle can be designed to be 360 / M / N degrees.

[0089] Of course, the angle of each rotation does not necessarily need to be designed equally, as long as the support column 311 can support the corresponding platform as needed.

[0090] According to the required jacking of the annular platform body 21, the rotary motor is rotated by the corresponding angle, and then the cylinder is started. The rotary motor above the cylinder is pushed, and then the support column assembly 3 is also forced to move upwards. The annular platform body 21 to be lifted is jacked to the same level as the center platform body 101 under the pushing of the support column assembly 3, and together forms a platform.

[0091] When the platform area needs to be reduced, press the switch to retract the push rod of the cylinder, and the annular platform body 21 descends with the support column assembly 3, and falls on the support surface of the bottom platform body 1. At this time, rotate counterclockwise by a corresponding angle, and then use the support column assembly 3 to jack up the middle platform body 2, so that the test bench area becomes smaller.

[0092] For example, when the maximum area of the middle platform body 2 needs to be changed to the second largest area, press the switch to retract the push rod of the cylinder, and the annular platform body 21 descends and falls on the support surface of the bottom platform body 1. At this time, use the rotary motor to rotate counterclockwise by 18°, and then start the cylinder to push the jacking rod, so that the four annular platform bodies 21 from the center are jacked up, and the test bench area changes from the maximum area to the second largest area.

[0093] Embodiment 3

[0094] A variable platform range test bench, comprising: a bottom platform body 1, a hollow middle platform body 2 composed of multiple groups of concentrically arranged annular platform bodies 21, a center platform body 101, and a rotatable and liftable support column assembly 3.

[0095] Specifically, in this embodiment, as shown in Figure 9 , Figure 10 , Figure 11 , the platform surface shapes of the bottom platform body 1, the middle platform body 2, the center platform body 101, and the annular platform body 21 are all regular octagons.

[0096] The middle platform body 2 includes a first annular platform body 201, a second annular platform body 202, a third annular platform body 203, and a fourth annular platform body 204. The above-mentioned annular platform bodies 21 are arranged concentrically, from small to large, and from inside to outside.

[0097] Each annular platform body 21 is provided with a hole 401, and the first layer of annular platform body 21 closest to the center platform body 101 is not provided with a hole 401. All the holes 401 are arranged periodically,

[0098] Specifically, the first annular table body 201 is provided with eight holes 401, the second annular table body 202 is provided with sixteen holes 401, the third annular table body 203 is provided with twenty-four holes 401, and the fourth annular table body 204 is provided with thirty-two holes 401;

[0099] The support column assembly 3 is provided with support columns 311, which are arranged in correspondence with the position distribution of the holes 401; the support column assembly 3 supports different annular table bodies 21 from inside to outside by rotating and lifting, so as to make the annular table bodies 21 flush with the table top of the central table body 101, and change the range of the experimental table top;

[0100] The other contents are the same as those of Embodiment 1, and the principle is similar, and thus the embodiment will not be described again.

[0101] Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of preferred embodiments, and the modules or processes in the drawings are not necessarily necessary for implementing the present application.

[0102] Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment according to the description of the embodiment, or can be changed and located in one or more devices different from the embodiment. The modules in the above embodiment can be combined into one module, or can be further split into multiple sub-modules.

[0103] The above-mentioned serial numbers of the present application are only for description, and do not represent the advantages and disadvantages of the embodiment.

[0104] The above disclosure is only some specific embodiments of the present application, but the present application is not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present application.

Claims

1. A laboratory bench of variable benchtop extent, characterized in that, The utility model relates to a multi -functional experimental table, including: Annular table body, center table body, bottom table body and support column assembly; A plurality of annular table bodies are nested from inside to outside and from small to large, the first layer annular table body is internally connected with the center table body, the table top of the annular table body and the table top of the center table body jointly constitute the experimental table top, the bottom table body is arranged below the center table body, the bottom table body is internally provided with the support column assembly, and the top of the support column assembly is provided with a support column; The bottom of each annular table body is provided with a hole, and the support column assembly is correspondingly provided with the support column; the number of the holes of each annular table body from inside to outside is sequentially linearly increased, all the holes form a plurality of fan-shaped hole groups, and the hole groups are rotationally symmetrically distributed with the center of the annular table body as the rotation center; the support column of the support column assembly is provided with a support column group corresponding to the hole group, and the number of the support columns of each support column group is same with the number of the annular table bodies; the support column and the hole position distribution are correspondingly arranged; The support column assembly comprises a power device, and the power device comprises a curve rotating mechanism and a straight line transmission mechanism; The curve rotating mechanism is used to drive the rotating motion of the support column, and the straight line transmission mechanism is used to drive the vertical lifting motion of the support column; The support column supports one or more annular table bodies through rotation and lifting, so that the table top of the supported annular table body is flush with the table top of the center table body, and the range of the experimental table top is changed.

2. A variable benchtop range laboratory bench according to claim 1, wherein, The holes are radially distributed along the incircle diameter of the annular table body, and the number of the holes on the same radial line periodically decreases linearly from more to less or increases linearly from less to more along the circumferential direction.

3. A variable benchtop range laboratory bench according to claim 1, wherein, The circumferential angle between two adjacent support column groups is same, and the circumferential angle between two adjacent hole groups is same.

4. The variable deck range laboratory table of claim 1, wherein, The height of each annular table body is same, and the top ends of each support column are flush and same.

5. The variable deck range laboratory table of claim 1, wherein, The height of the center table body is higher than the height of the annular table body, and the rising height of the support column is not higher than the depth of the hole.

6. The variable deck range laboratory table of claim 1, wherein, The bottom table body is further provided with a slot hole on the table top, the slot holes are uniformly distributed along the circumferential direction of the table top of the bottom table body, and the slot hole is used to pass through the table top of the bottom table body.

7. The variable deck range laboratory table of claim 1, wherein, The curve rotating mechanism comprises a rotating motor, and the straight line transmission mechanism comprises a gas cylinder or a telescopic hydraulic cylinder or an electric push rod.

8. The variable deck range laboratory table of claim 1, wherein, The bottom table body is further provided with a positioning assembly, and the positioning assembly is used to position the initial position of the annular table body; The positioning assembly comprises a pin / pin hole arranged on the surface of the bottom table body and a pin hole / pin arranged on each annular table body and corresponding to the pin / pin hole, and the pin / pin hole is symmetrically distributed along the diameter of the incircle of the bottom table body.

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