Clamping device

Abstract

The utility model provides a clamping device and test equipment, and relates to the field of test equipment. The clamping device comprises a supporting plate, a clamping component, a pipettor, a fixing plate and a lead screw driving mechanism, and the supporting plate is provided with a sliding rail; the clamping component is slidably connected with the sliding rail in the vertical direction. At least partial structure of the clamping component is in clamping connection with a pipettor; the fixing plate is fixedly installed on the supporting plate and located above the sliding rail. The lead screw driving mechanism is installed on the fixing plate and is in transmission connection with the clamping component. The lead screw driving mechanism drives the clamping component to move up and down in a reciprocating mode in the vertical direction. The fixing plate is provided with a limiting stopper, the clamping component is movably connected with a limiting separation blade, the limiting separation blade can move close to or away from the fixing plate independently and / or along with the clamping component, the limiting separation blade can abut against the limiting stopper for triggering, the position of a vertical axis of the pipettor is fed back to be zero, and the limiting separation blade is used for calibrating the position and the moving distance of the pipettor. By the adoption of the scheme, the axial space area occupied by the clamping device can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of conveying equipment, and in particular to a clamping device. Background Art

[0002] With the development of life science and technology, automated pipetting equipment, as a tool for precise liquid transfer, has been widely used in biochemical laboratories and the biopharmaceutical industry. These devices can help laboratory personnel automatically perform tedious pipetting work, improve efficiency and reduce human errors.

[0003] In the prior art, an automated pipette uses a Z-axis drive device to control the vertical movement of the pipette, but different experiments often require the use of pipettes of different specifications, which are cumbersome to disassemble and replace. In addition, in the current automated pipettes, the pipette and the fixing device often cannot overlap in the vertical direction, thereby increasing the horizontal volume occupied by the pipette in the automated equipment, making the overall volume of the automated equipment bulky, occupying space and increasing costs.

[0004] In one of the technologies, two motors are used to achieve different functions. In the prior art, the horizontal adjustment motor and the Z-axis drive motor are also assembled together. The pipette and each module are relatively dispersed in the horizontal direction, occupying a large amount of horizontal volume space. At the same time, in long-term use, the motors are squeezed together and the heat dissipation is poor, which affects the service life. At the same time, in the prior art, the screw rod and the equipment are often fixed in a set, and it is not easy to disassemble when the equipment needs to be replaced, maintained and serviced. Utility Model Content

[0005] The present disclosure provides a clamping device to at least solve the above technical problems existing in the prior art.

[0006] According to a first aspect of the present disclosure, a clamping device is provided, comprising: a support plate, a clamping member, a pipette, a fixed plate and a screw drive mechanism, wherein a slide rail is arranged on the support plate; the clamping member is slidably connected to the slide rail in a vertical direction; at least a part of the structure of the clamping member is used for clamping and connecting the pipette; the fixed plate is fixedly mounted on the support plate, and the fixed plate is located above the slide rail; the screw drive mechanism is mounted on the fixed plate and is transmission-connected to the clamping member, and the screw drive mechanism drives the clamping member to reciprocate up and down in the vertical direction; a limiter is mounted on the fixed plate, and the clamping member is movably connected to a limit baffle in the vertical direction, and the limit baffle can move close to or away from the fixed plate alone and / or following the clamping member; the limit baffle can contact and abut against the limiter, and feedback the vertical axis position of the pipette is 0, which is used to calibrate the position and movement distance of the pipette.

[0007] In one possible embodiment, the screw drive mechanism includes a screw motor and a screw structure driven by the screw motor, the clamping member includes a nut slider and clamps installed on both sides of the nut slider, the two clamps extend from the nut slider and extend to form clamping arms, and a clamping space is formed between the two clamping arms, and the clamping space is used to accommodate the pipette; the screw structure is synchronously connected to the nut slider.

[0008] In one possible implementation manner, a clamp groove is provided through the nut slider in the vertical direction, the screw structure is synchronously connected to the screw structure through a motor nut, the motor nut is nested in the clamp groove, and is fixedly connected to the nut slider.

[0009] In one embodiment, the clamp groove includes a cylindrical through hole extending along the vertical direction and a slotted structure connected to the clamping space, the cylindrical through hole is connected to the clamping space through the slotted structure, and the screw structure is nested in the clamp groove through the slotted structure.

[0010] In one embodiment, the clamp groove includes a cylindrical through hole extending along the vertical direction and a slotted structure disposed away from the clamping space, the screw rod structure is nested in the clamp groove through the slotted structure, and the screw rod structure is spaced apart from the clamping space through the nut slider.

[0011] In one possible implementation manner, the fixed plate is constructed as a square orifice plate, a pair of triangular supports are fixedly connected between the bottom of the square orifice plate and the support plate, and a position space for installing the screw structure (32) is reserved between the two triangular supports; the square orifice plate is used to support the screw motor, one end of the screw structure is transmission-connected to the screw motor, and the other end of the screw structure passes through the square orifice plate, the motor nut and the nut slider in sequence.

[0012] In one possible implementation manner, a connecting rib is respectively provided at the joint corners between the nut slider and the two clamping plates, each of the clamping plates is respectively fixedly connected to a rail clamp, and each of the rail clamps is nested and slidably connected to the corresponding slide rail.

[0013] In one possible implementation manner, the nut slider, each of the clamping plates and the connecting rib are constructed as an integrally formed structure.

[0014] In one embodiment, the screw motor and the nut slider are located on the same side of the support plate, the slide rail adopts a double slide rail, the support plate has a U-shaped groove, the U-shaped groove is located between the two slide rails, and the clamping member is configured to move up and down along the U-shaped groove.

[0015] In one possible implementation manner, the clamping device further comprises a cover shell, which is disposed on the outside of the screw drive mechanism and the clamping member and is detachably connected to the support plate.

[0016] The clamping device disclosed in the present invention adopts a clamping member that is slidably connected relative to a support plate in a vertical direction, and at least a part of the structure of the clamping member is clamped and connected to a pipette. The clamping member can drive the pipette to move back and forth in the vertical direction, which is convenient for the application of the pipette and saves more space, reduces the volume of the overall equipment, and thus reduces the cost; at the same time, the clamping member is convenient for clamping pipettes of different specifications and shapes, and has high compatibility and applicability; further, the setting of the limiter and the limit baffle can accurately locate the position of the pipette, improve the accuracy of the automated equipment, and avoid position errors during equipment operation that cause experimental waste.

[0017] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0019] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0020] Figure 1 The axial structure diagram of the clamping device of the embodiment of the present disclosure is shown. Figure 1 ;

[0021] Figure 2 A schematic diagram of the front view of the clamping device according to an embodiment of the present disclosure is shown;

[0022] Figure 3 A schematic diagram of the installation structure between the support plate, the fixing plate and the slide rail in the clamping device of the embodiment of the present disclosure is shown;

[0023] Figure 4 A schematic diagram of the axial structure of a clamping member in a clamping device according to an embodiment of the present disclosure is shown;

[0024] Figure 5 The top view of the clamping member in the clamping device of the embodiment of the present disclosure is shown. Figure 1 ;

[0025] Figure 6 The top view of the clamping member in the clamping device of the embodiment of the present disclosure is shown. Figure 2 ;

[0026] Figure 7 The top view of the clamping member in the clamping device of the embodiment of the present disclosure is shown. Figure 3 ;

[0027] Figure 8 A schematic diagram of the assembly structure of a screw drive mechanism and a clamping member in a clamping device according to an embodiment of the present disclosure is shown;

[0028] Fig. 9 The axial structure diagram of the clamping device of the embodiment of the present disclosure is shown. Figure 2 .

[0029] Description of the numbers in the figure:

[0030] 001-clamping device; 1-support plate; 11-slide rail; 12-fixed plate; 13-limiter; 14-triangular support; 15-U-shaped groove; 2-clamping member; 21-nut slider; 211-clamping groove; 2111-cylindrical through hole; 2112-slotted structure; 22-limiting baffle; 23-clamping plate; 231-clamping arm; 232-clamping space; 24-track clamp; 25-connecting rib; 3-screw drive mechanism; 31-screw motor; 32-screw structure; 33-motor nut; 4-pipette; 5-cover. DETAILED DESCRIPTION

[0031] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0032] In the existing pipette clamping device, the pipette is often rectangular in plane, and is generally separated from the fixed object on the vertical axis, which occupies a large space area. The instrument needs to make more space to facilitate the movement of the pipette on the plane. In this way, the existing clamping device occupies more horizontal space as a whole.

[0033] To alleviate the above problems, refer to Figure 1-Figure 9The embodiment of the present disclosure provides a clamping device 001, comprising: a support plate 1, a clamping member 2, a pipette 4, a fixing plate 12 and a screw drive mechanism 3, wherein the support plate 1 is placed vertically, and a slide rail 11 is arranged on the support plate 1; the clamping member 2 is slidably connected to the slide rail 11 along the vertical direction; the clamping member 2 is at least partially structured to clamp and connect a pipette 4; in this way, the clamping member 2 with the pipette 4 can slide up and down along the slide rail 11 in the vertical direction. Furthermore, the fixed plate 12 is fixedly installed on the support plate 1, and the fixed plate 12 is located above the slide rail 11; the screw drive mechanism 3 is installed on the fixed plate 12 and is transmission-connected with the clamping member 2, so that the screw drive mechanism 3, as a power drive body, can drive the clamping member 2 to move back and forth up and down in the vertical direction; the clamping device 001 of the embodiment of the present disclosure is applied, and the clamping member 2 is slidably connected relative to the support plate 1 in the vertical direction, and the clamping member 2 is clamped and connected to a pipette 4, so that the clamping member 2 can drive the pipette 4 to move back and forth up and down in the vertical direction, which is convenient for the application of the pipette 4, and saves more space, reduces the volume of the overall equipment, and thus reduces the cost; at the same time, the clamping member 2 is convenient for clamping pipettes 4 of different specifications and shapes, and has high compatibility and applicability.

[0034] Considering that the pipette 4 needs to be moved to a specified position according to demand, in order to achieve the accuracy of displacement, a stopper 13 is installed on the fixed plate 12, and the clamping member 2 is movably connected to a stopper block 22 in the vertical direction. The stopper block 22 can move close to or far from the fixed plate 12 alone and / or follow the clamping member 2; the stopper block 22 can contact with the stopper 13, and feedback the vertical axis position of the pipette 4 is 0, which is used to calibrate the position and movement distance of the pipette 4. In this way, when the stopper block 22 contacts with the stopper 13 during the reciprocating movement up and down following the clamping member 2, the position of the pipette 4 can be accurately located, and each positioning position can be defined as the vertical axis position zeroing. This step can be used for each movement of the calibration position of the pipette 4, which can improve the movement accuracy of the automation equipment and avoid position errors during equipment operation that cause experimental waste.

[0035] Considering the transmission connection scheme between the screw drive mechanism 3 and the clamping member 2, in the embodiment of the present disclosure, the screw drive mechanism 3 includes a screw motor 31 and a screw structure 32 connected to the bottom of the screw motor 31, and the clamping member 2 includes a nut slider 21 and a clamping plate 23 installed on the left and right sides of the nut slider 21. The two clamping plates 23 extend from the nut slider 21 in the direction of passing through the support plate 1 and extend to form a clamping arm 231. The clamping arm 231 is at least a partial structure of the clamping plate 23. A clamping space 232 is formed between the two clamping arms 231, and the clamping space 232 is used to accommodate the pipette 4; the screw structure 32 is synchronously connected to the nut slider 21. It should be pointed out that the spatial structure of the clamping space 232 is adapted to the clamping profile of the pipette 4 to be clamped, and the corresponding clamping arm 231 structure can be matched according to different models and sizes of pipettes 4, and an adapted clamping space 232 can be formed.

[0036] By adopting such a solution, it can be ensured that the pipette 4 can be clamped in the axial region of the clamping space 232 formed by the clamping arm 231 of the clamping member 2 .

[0037] Furthermore, a clamp groove 211 is provided through the nut slider 21 in the vertical direction, and the screw structure 32 is synchronously driven and connected with the screw structure 32 through the motor nut 33. The motor nut 33 is nested in the clamp groove 211 and fixedly connected with the nut slider 21. In this way, the clamping member 2 can be synchronously driven with the screw structure 32, which can be understood as the motor nut 33 and the screw structure 32 are threadedly adapted and assembled, and as the screw structure 32 rotates, the clamping member 2 and the motor nut 33 can move upward or downward along the thread path on the screw structure 32.

[0038] Considering the specific installation environment of the screw drive mechanism 3, the fixed plate 12 of the embodiment of the present disclosure is constructed as a square orifice plate, and a pair of triangular supports 14 are fixedly connected between the bottom of the square orifice plate and the support plate 1, and a position space for installing the screw structure 32 is reserved between the two triangular supports 14; the square orifice plate is used to support the screw motor 31, and one end of the screw structure 32 is transmission-connected to the screw motor 31, and the other end of the screw structure 32 passes through the square orifice plate, the motor nut 33 and the nut slider 21 in sequence. In this way, the screw motor 31, the screw structure 32, the square orifice plate, the motor nut 33, the nut slider 21 and the pipette 4 clamped by the nut slider 21 are all located in the same axial installation area, which can reduce the occupied space of the clamping device 001 along the longitudinal direction.

[0039] Considering the structural stability of the clamping member 2, a connecting rib 25 is respectively provided at the joint angle between the nut slider 21 and the two clamps 23, and each clamp 23 is respectively fixedly connected to a rail clamp 24. Exemplarily, each rail clamp 24 is detachably mounted on the clamp 23. Specifically, the rail clamp 24 is mounted on the outer side of the clamping arm 231, and each rail clamp 24 is nested and slidably connected with the corresponding slide rail 11.

[0040] Further considering that the overall clamping device 001 occupies less axial space, in the disclosed embodiment, the screw motor 31 and the nut slider 21 are located on the same side of the support plate 1, and the slide rail 11 adopts a double slide rail 11. It can be understood that two slide rails 11 are installed on the support plate 1, and the two slide rails 11 are arranged in parallel and spaced apart. The use of double slide rails 11 makes the clamping member 2 more stable when moving up and down, reduces the position offset caused by vibration, and reduces the error. Furthermore, the support plate 1 has a U-shaped groove 15, and the U-shaped groove 15 is located between the two slide rails 11. The clamping member 2 is configured to move up and down along the U-shaped groove 15, and the clamping arm 231 passes through the U-shaped groove 15 on the support plate 1. In this way, the pipette 4 can follow the clamping member 2 to move up and down along the U-shaped groove 15, further ensuring that the pipette 4, the clamping member 2, and the screw motor 31 are all located in the same axial area.

[0041] Considering the application safety of the clamping device 001, the clamping device 001 further includes a cover 5, which is arranged outside the screw drive mechanism 3 and the clamping member 2 and is detachably connected to the support plate 1. In this way, the screw motor 31 and the clamping member 2 can be prevented from colliding with other objects in the horizontal direction during assembly and disassembly.

[0042] Exemplarily, in the first structural mode of the clamp groove 211, the clamp groove 211 includes a cylindrical through hole 2111 penetrating in the vertical direction and a slotted structure 2112 communicating with the clamping space 232, the cylindrical through hole 2111 communicates with the clamping space 232 through the slotted structure 2112, and the screw structure 32 is nested in the clamp groove 211 through the slotted structure 2112. In this way, the motor nut 33 can be fixed in the cylindrical through hole 2111 of the clamp groove 211, and the screw structure 32 is assembled or disassembled via the slotted structure 2112 and the clamping space 232.

[0043] When in use, the screw motor 31 rotates the screw structure 32 to drive the motor nut 33 to move up and down. The motor nut 33 is fixedly connected to the clamping member 2, thereby driving the clamping member 2 to move up and down. The clamping member 2 moves linearly along the slide rail 11, and the clamping member 2 clamps the pipette 4 to move up and down. The limit baffle 22 on the clamping member 2 contacts the limiter 13 to determine the position of the clamping member 2 in the vertical direction, and transmits the position to the terminal through the circuit system to determine the position of the pipette 4; when disassembling the screw motor 31, first disassemble the motor nut 33 so that the screw motor 31 can move up and down in the clamp groove 211, and move the screw structure 32 out along the slotted structure 2112 of the clamp groove 211, and take out the screw motor 31 through the fixing plate 12; when disassembling the pipette 4, remove the two clamping plates 23 and the fixing screws on the pipette 4, and apply opposite forces to the two clamping plates 23 to disassemble the pipette 4. In the disclosed embodiment, the clamping member 2 and the support plate 1 are vertically embedded in the U-shaped groove 15 to save space; the clamping member 2 is fixed by two slide rails 11 and the track clamp 24 on the clamping member 2, so that the clamping member 2 is more stable when moving up and down; the clamping member 2 is convenient for clamping pipettes 4 of different specifications and shapes, and has strong compatibility. The connecting rib 25 can be adjusted in size according to the shape of the pipette 4, making the overall clamping device 001 more stable; the design of the clamp groove 211 on the clamping member 2 and the design of the two clamps 23 facilitates the assembly and disassembly of the screw motor 31 and the pipette 4.

[0044] Exemplarily, in the second structural mode of the clamp groove 211, the clamp groove 211 includes a cylindrical through hole 2111 penetrating in the vertical direction and a slotted structure 2112 disposed away from the clamping space 232, the screw rod structure 32 is nested in the clamp groove 211 through the slotted structure 2112, and the screw rod structure 32 is spaced apart from the clamping space 232 through the nut slider 21. In this way, the motor nut 33 can be fixed in the cylindrical through hole 2111 of the clamp groove 211, and the screw rod structure 32 is assembled or disassembled through the slotted structure 2112 and the open space on the side of the nut slider 21 away from the clamping space 232.

[0045] When in use, the screw motor 31 rotates the screw structure 32 to drive the motor nut 33 to move up and down. The motor nut 33 is fixedly connected to the clamping member 2, thereby driving the clamping member 2 to move up and down. The clamping member 2 moves linearly along the two slide rails 11, and the clamping member 2 clamps the pipette 4 to move up and down. The limit baffle 22 on the clamping member 2 contacts the limiter 13 to determine the position of the clamping member 2 in the vertical direction, and transmits the position to the terminal through the circuit system, thereby determining the position of the pipette 4; when disassembling the screw motor 31, first disassemble the motor nut 33 so that the screw motor 31 can move up and down in the clamp groove 211, and move the screw structure 32 out along the slotted structure 2112 of the clamp groove 211, and take out the screw motor 31 through the square orifice plate (fixed plate 12); when disassembling the pipette 4, remove the two clamping plates 23 and the fixing screws on the pipette 4, and apply opposite forces to the two clamping plates 23 to disassemble the pipette 4.

[0046] In order to save the process cost of the clamping member 2, the nut slider 21, each clamping plate 23 and the connecting rib 25 are constructed as an integrally formed structure.

[0047] When in use, the screw motor 31 rotates the screw structure 32 to drive the motor nut 33 to move up and down. The motor nut 33 is fixedly connected to the clamping member 2, thereby driving the clamping member 2 to move up and down. The clamping member 2 moves linearly along the double slide rails 11, and the clamping member 2 clamps the pipette 4 to move up and down. The limit baffle 22 on the clamping member 2 contacts the limiter 13 to determine the position of the clamping member 2 in the vertical direction, and transmits the position to the terminal through the circuit system to determine the position of the pipette 4; when disassembling the screw motor 31, first disassemble the motor nut 33 so that the screw motor 31 can move up and down in the clamp groove 211, and move the screw structure 32 out along the slotted structure 2112 of the clamp groove 211, and take out the screw motor 31 through the square orifice plate (fixed plate 12); when disassembling the pipette 4, remove the two clamping plates 23 and the fixing screws on the pipette 4, and apply opposite forces to the two clamping plates 23, so that the pipette 4 can be disassembled.

[0048] In summary, the clamping device 001 of the embodiment of the present disclosure is adopted, the clamping member 2 is slidably connected relative to the support plate 1 in the vertical direction, and the pipette 4 is clamped in the space between the clamping member 2 and the support plate 1. Under the premise of this position setting, the clamping member 2 can drive the pipette 4 to move back and forth up and down in the vertical direction, which is convenient for the application of the pipette 4, and saves more space, reduces the volume of the overall equipment, and thus reduces the cost; at the same time, the clamping member 2 is convenient for clamping pipettes 4 of different specifications and shapes, and has high compatibility and applicability; further, the setting of the limiter 13 and the limit baffle 22 can accurately locate the position of the pipette 4, improve the accuracy of the automated equipment, and avoid position errors during equipment operation that cause experimental waste.

[0049] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A clamping device, characterized in that: include: A support plate (1), wherein a slide rail (11) is arranged on the support plate (1); A clamping member (2), wherein the clamping member (2) is slidably connected to the slide rail (11) along a vertical direction; A pipette (4), wherein at least a part of the structure of the clamping member (2) is used for clamping and connecting the pipette (4); A fixing plate (12), the fixing plate (12) being fixedly mounted on the supporting plate (1), the fixing plate (12) being located above the slide rail (11); A screw drive mechanism (3) is mounted on the fixing plate (12) and is in driving connection with the clamping member (2), wherein the screw drive mechanism (3) drives the clamping member (2) to move reciprocatingly up and down along the vertical direction; The fixed plate (12) is provided with a limiter (13); the clamping member (2) is movably connected to a limiter baffle (22) along the vertical direction; the limiter baffle (22) can move close to or away from the fixed plate (12) independently and / or following the clamping member; the limiter baffle (22) can abut against the limiter (13) and provide feedback that the vertical axis position of the pipette (4) is 0, so as to calibrate the position and movement distance of the pipette (4).

2. The clamping device according to claim 1, characterized in that: The screw drive mechanism (3) comprises a screw motor (31) and a screw structure (32) drivingly connected to the screw motor (31); the clamping member (2) comprises a nut slider (21) and clamping plates (23) mounted on both sides of the nut slider (21); the two clamping plates (23) extend from the nut slider (21) and extend to form clamping arms (231); a clamping space (232) is formed between the two clamping arms (231); the clamping space (232) is used to accommodate the pipette (4); the screw structure (32) is synchronously connected to the nut slider (21) by transmission.

3. The clamping device according to claim 2, characterized in that: The nut slider (21) is provided with a clamp groove (211) penetrating in the vertical direction, the screw rod structure (32) is synchronously connected to the screw rod structure (32) through a motor nut (33), and the motor nut (33) is nested in the clamp groove (211) and fixedly connected to the nut slider (21).

4. The clamping device according to claim 3, characterized in that: The clamp groove (211) comprises a cylindrical through hole (2111) extending through the vertical direction and a slotted structure (2112) connected to the clamping space (232); the cylindrical through hole (2111) is connected to the clamping space (232) via the slotted structure (2112); and the screw rod structure (32) is nested in the clamp groove (211) via the slotted structure (2112).

5. The clamping device according to claim 3, characterized in that: The clamp groove (211) comprises a cylindrical through hole (2111) extending in the vertical direction and a slotted structure (2112) disposed away from the clamping space (232); the screw rod structure (32) is nested in the clamp groove (211) via the slotted structure (2112); and the screw rod structure (32) is spaced apart from the clamping space (232) via the nut slider (21).

6. The clamping device according to claim 3, characterized in that: The fixing plate (12) is constructed as a square orifice plate, a pair of triangular supports (14) are fixedly connected between the bottom of the square orifice plate and the support plate (1), and a position space for installing the screw structure (32) is reserved between the two triangular supports (14); the square orifice plate is used to support the screw motor (31), one end of the screw structure (32) is drivingly connected to the screw motor (31), and the other end of the screw structure (32) passes through the square orifice plate, the motor nut (33) and the nut slider (21) in sequence.

7. The clamping device according to claim 3, characterized in that: A connecting rib (25) is respectively arranged at the joint angle between the nut slider (21) and the two clamping plates (23); each clamping plate (23) is respectively fixedly connected to a rail clamp (24); and each rail clamp (24) is nested and slidably connected to the corresponding slide rail (11).

8. The clamping device according to claim 7, characterized in that: The nut slider (21), each of the clamping plates (23) and the connecting rib (25) are constructed as an integrally formed structure.

9. The clamping device according to claim 3, characterized in that: The screw motor (31) and the nut slider (21) are located on the same side of the support plate (1); the slide rail (11) adopts a double slide rail (11); the support plate (1) has a U-shaped groove (15); the U-shaped groove (15) is located between the two slide rails (11); and the clamping member (2) is configured to move up and down along the U-shaped groove (15).

10. The clamping device according to claim 1, characterized in that: The clamping device (001) further comprises a cover shell (5), which is arranged to cover the outer side of the screw drive mechanism (3) and the clamping member (2) and is detachably connected to the support plate (1).

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