Clamping device

Abstract

The utility model discloses a clamping device which comprises a clamp body and a clamping assembly. A first through hole is formed in the middle of the clamp body; the clamping assembly comprises a plurality of clamping elements and a control element, the control element is movably arranged between the clamping elements and the clamp body, all the clamping elements are encircled to form a second through hole used for clamping the to-be-fixed part, and the first through hole and the second through hole are correspondingly arranged; based on movable arrangement of the control element, the clamping element is switched between the first position and the second position, the clamping element applies extrusion force to the part to be fixed, and the diameter of the second through hole when the clamping assembly is located at the first position is larger than that of the second through hole when the clamping assembly is located at the second position. According to the clamping device, the diameter of the second through hole defined by all the clamping elements is controlled through the control element, so that the clamping device is suitable for to-be-fixed parts with different diameters, and the application range of the clamping device is expanded.

Description

Technical Field

[0001] This utility model belongs to the field of clamping technology, and in particular relates to a clamping device. Background Technology

[0002] Test tubes, beakers, and Erlenmeyer flasks are commonly used instruments in chemical laboratories. These instruments are frequently used for reagent reactions or dilutions, and are used at room temperature or under heat. Clamps are a common device in chemical experiments, primarily used to hold test tubes, beakers, and other instruments in place. However, existing clamps are mostly specialized, such as test tube clamps specifically for test tubes and beaker clamps specifically for beakers. Furthermore, these clamps have limited capacity to accommodate containers with a specific diameter range. When the container held by the clamp is larger than the maximum diameter within that range, the clamp may exert excessive force, damaging the clamp, or it may be unable to hold a large-diameter container at all. Conversely, when the container held by the clamp is smaller than the minimum diameter within that range, the clamp may exert insufficient force, failing to hold the container. Therefore, there is an urgent need for a clamp with a wider range of adaptability. Utility Model Content

[0003] The purpose of this invention is to provide a clamping device to solve the problems existing in the prior art.

[0004] To achieve the above objectives, this utility model provides a clamping device including a clamping body and a clamping assembly; the clamping body has a first through hole in its middle; the clamping assembly includes a plurality of clamping elements and a control element, the control element being movably disposed between the clamping elements and the clamping body, all the clamping elements together forming a second through hole for clamping the part to be fixed, the first through hole and the second through hole being arranged correspondingly; based on the movable arrangement of the control element, the clamping elements switch between a first position and a second position, and the clamping elements apply a squeezing force to the part to be fixed, the diameter of the second through hole when the clamping assembly is in the first position is greater than the diameter of the second through hole when the clamping assembly is in the second position.

[0005] Optionally, the clamp body includes a top cover and a base disposed opposite to each other, the top cover and the base being detachably connected, the clamping element being disposed between the top cover and the base, and the control element being movably disposed between the top cover and the base.

[0006] Optionally, the control element includes a control slip ring disposed between the top cover and the base, the control slip ring having a plurality of mounting holes, the top cover having an annular groove, and all the mounting holes corresponding to the annular groove; the base having a plurality of sliding holes, the sliding holes being radially distributed along the first through hole; the clamping element being disposed between the control slip ring and the base, the clamping element having a first column fixedly connected to the side near the control slip ring, the end of the first column passing through the mounting hole and slidably disposed in the annular groove, the clamping element having a second column fixedly connected to the side near the base, the second column being slidably disposed in the sliding hole, the first column and the second column being respectively disposed at both ends of the extension direction of the clamping element.

[0007] Optionally, the number of clamping elements is not less than 10.

[0008] Optionally, a damping block is detachably connected between the control slip ring and the top cover. Based on the compression of the damping block by the control slip ring and the top cover, the damping block deforms and expands the contact area between the damping block and the control slip ring, and between the damping block and the top cover.

[0009] Optionally, the number of damping blocks is not less than three.

[0010] Optionally, the control slip ring is fixedly connected to a control handle, and the top cover is provided with a slide groove for the control handle to slide. The slide groove is provided with a first end and a second end that are arranged opposite to each other. When the control handle is set at the first end, the clamping assembly is in a first position, and when the control handle is set at the second end, the clamping assembly is in a second position.

[0011] Optionally, the clamping element is a semi-annular moving piece.

[0012] Compared with the prior art, the present invention has the following advantages and technical effects:

[0013] In operation, the control element in the clamping assembly is movably disposed between the clamping element and the clamping body. Based on this movable arrangement, the clamping element switches between a first position and a second position. The diameter of the second through hole is larger when the clamping assembly is in the first position than when it is in the second position. In other words, the control element controls the diameter of the second through hole formed by all the clamping elements. During operation, the diameter of the second through hole is controlled to be larger than the diameter of the part to be fixed. The part is placed inside the second through hole, and the control element is activated to reduce the diameter of the second through hole until it matches the diameter of the part. At this point, the clamping element applies a compressive force to the part, increasing the friction between the clamping element and the part, thus completing the fixing process. Furthermore, this invention controls the diameter of the second through hole formed by all the clamping elements, thus adapting to parts of different diameters and expanding the applicability of the clamping device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the clamping device structure when the control handle of this utility model is at the second end;

[0016] Figure 2 This is a schematic diagram of the clamping device structure when the control handle of this utility model is at the first end;

[0017] Figure 3 This is a schematic diagram of the clamping device structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the control element structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the base structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the control element of this utility model from another perspective;

[0021] Figure 7 This is a schematic diagram of the top cover structure of this utility model;

[0022] Figure 8 This is a schematic diagram of the clamping element structure of this utility model;

[0023] Figure 9This is a schematic diagram of the clamping element of this utility model from another perspective;

[0024] Among them, 1. clamp body, 11. first through hole, 12. top cover, 13. base, 14. annular slide groove, 15. sliding hole, 16. damping block, 21. clamping element, 211. first column, 212. second column, 22. control element, 221. control slip ring, 222. mounting hole, 223. control handle, 23. second through hole. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this utility model can be combined with each other. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Referring to the accompanying drawings, this utility model provides a clamping device, which includes a clamping body 1 and a clamping assembly. A first through hole 11 is provided in the middle of the clamping body 1. The clamping assembly includes a plurality of clamping elements 21 and a control element 22. The control element 22 is movably disposed between the clamping elements 21 and the clamping body 1. All clamping elements 21 together form a second through hole 23 for clamping the object to be fixed, and the clamping elements 21 apply a pressing force to the object to be fixed. The first through hole 11 and the second through hole 23 are arranged correspondingly. Based on the movable arrangement of the control element 22, the clamping elements 21 switch between a first position and a second position. The diameter of the second through hole 23 is larger when the clamping assembly is in the first position than when the clamping assembly is in the second position. In this embodiment, the object to be fixed is a test tube, beaker, triangular cup, etc.

[0027] In operation, the control element 22 in the clamping assembly is movably disposed between the clamping element 21 and the clamping body 1. Based on the movable arrangement of the control element 22, the clamping element 21 switches between a first position and a second position. The diameter of the second through hole 23 when the clamping assembly is in the first position is greater than the diameter of the second through hole 23 when the clamping assembly is in the second position. That is, the control element 22 controls the size of the diameter of the second through hole 23 formed by all the clamping elements 21. In operation, the diameter of the second through hole 23 is controlled to be greater than the diameter of the part to be fixed. The part to be fixed is placed in the second through hole 23. By controlling the operation of the control element 22, the diameter of the second through hole 23 is reduced until the diameter of the second through hole 23 is the same as the diameter of the part to be fixed. At this time, the clamping element 21 applies a squeezing force to the part to be fixed, increasing the friction between the clamping element 21 and the part to be fixed, thereby completing the fixing of the part to be fixed. Furthermore, this utility model controls the diameter of the second through hole 23 formed by all clamping elements 21 through the control element 22, thereby adapting to the parts to be fixed with different diameters and expanding the applicability of the clamping device.

[0028] Further optimization of the design: The fixture body 1 includes a top cover 12 and a base 13 disposed opposite to each other, which are detachably connected. The clamping element 21 is arranged between the top cover 12 and the base 13, and the control element 22 is movably disposed between the top cover 12 and the base 13. The fixture body 1 has a split structure, including a top cover 12 and a base 13 disposed opposite to each other, which are detachably connected. The clamping element 21 and the control element 22 are arranged between the top cover 12 and the base 13, avoiding the clamping element 21 and the control element 22 being located at the ends of the fixture body 1, preventing external influences on the movement of the clamping element 21 and the control element 22, and protecting both of them.

[0029] In this embodiment, the clamping element 21 and the control element 22 can take various forms, and the number of control elements 22 varies depending on the structure of the clamping element 21. That is, one control element 22 can control the movement of one clamping element 21, or one control element 22 can control the movement of multiple clamping elements 21, or one control element 22 can control the movement of all clamping elements 21. In some embodiments, the clamping element 21 is an arc-shaped plate. The side of the arc-shaped plate near the part to be fixed has an arc-shaped structure. The side of the clamping element 21 with the arc-shaped structure is the contact side, which is used to contact the part to be fixed. The side of the arc-shaped plate away from the contact side is the control side, and the control side of the arc-shaped plate is connected to the control element 22. The control element 22 controls the arc-shaped plate to move along a predetermined path. The predetermined path is arranged radially along the first through hole 11. The contact sides of all the arc-shaped plates together form a second through hole 23 for clamping the part to be fixed. In some designs, the control element 22 can be a cylinder, hydraulic cylinder, electric rod, or a bolt, telescopic rod, etc., to control the radial movement of the arc-shaped plate along the first through hole 11. When the control element 22 is a bolt, the bolt is arranged radially along the first through hole 11. The clamp body 1 has a threaded hole, and the bolt passes through the threaded hole and is detachably connected to the control side of the arc-shaped plate. The bolt and the threaded hole are threadedly connected. By rotating the bolt, the relative position of the arc-shaped plate with respect to the clamp body 1 is controlled, thereby controlling the diameter of the second through hole 23. In this design, the arc-shaped plate is an elastic plate with a certain rigidity. While having a certain elasticity, the elastic plate can also clamp the part to be fixed by pressing it.

[0030] In this embodiment, all clamping elements 21 are moved by a control element 22. The control element 22 includes a control slip ring 221 disposed between the top cover 12 and the base 13. The control slip ring 221 has a plurality of mounting holes 222. The top cover 12 has an annular groove 14. All mounting holes 222 are corresponding to the annular groove 14. The base 13 has a plurality of sliding holes 15. The sliding holes 15 are radially distributed along the first through hole 11. The clamping elements 21 are disposed between the control slip ring 221 and the base 13. A first column 211 is fixedly connected to the side of the clamping element 21 near the control slip ring 221. The end of the first column 211 passes through the mounting hole 222 and is slidably disposed in the annular groove 14. A second column 212 is fixedly connected to the side of the clamping element 21 near the base 13. The second column 212 is slidably disposed in the sliding hole 15. The first column 211 and the second column 212 are respectively disposed at both ends of the extension direction of the clamping element 21. In this embodiment, the first column 211 of the clamping element 21 slides within the annular groove 14 after passing through the mounting hole 222. This means that while one end of the clamping element 21 can slide along the annular groove 14, this end also has the freedom to rotate along the axis of the mounting hole 222. The second column 212 of the clamping element 21 can slide within the sliding hole 15, causing the clamping element 21 to move closer to or further away from the center of the first through hole 11. All the clamping elements 21 are controlled to move synchronously by a control element 22, thereby increasing or decreasing the diameter of the second through hole 23 formed by all the clamping elements 21. In this solution, the control element 22 controls the clamping elements 21 to move closer to or further away from the center of the first through hole 11, thereby increasing or decreasing the diameter of all the second through holes 23.

[0031] The scheme is further optimized so that the number of clamping elements 21 is no less than 10. By controlling the number of clamping elements 21, the number of contact points between the clamping elements 21 and the part to be fixed is controlled, thereby increasing the contact area between the second through hole 23 and the part to be fixed, ensuring that the friction between the clamping elements 21 and the part to be fixed meets the clamping and fixing requirements of the part to be fixed, thereby completing the fixing work of the part to be fixed.

[0032] In this embodiment, since the control slip ring 221 and the clamping element 21 are disposed between the top cover 12 and the base 13, the top cover 12 and the base 13 apply a compressive force to the control slip ring 221 and the clamping element 21, causing both sides of the clamping element 21 to contact the base 13 and the control slip ring 221 respectively, and generating friction between the contact surfaces of the components. This ensures that the clamping element 21 can stay at a preset position after moving closer to or away from the center of the first through hole 11, ensuring that the clamping element 21 can continuously apply compressive force to the component to be fixed, and ensuring the stability of the clamping element 21 in clamping the component to be fixed. In a further optimized scheme, a damping block 16 is detachably connected between the control slip ring 221 and the top cover 12. Based on the compression of the damping block 16 by the control slip ring 221 and the top cover 12, the damping block 16 deforms, increasing the contact area between the damping block 16 and the control slip ring 221, and between the damping block 16 and the top cover 12. In this embodiment, a damping block 16 is detachably connected between the control slip ring 221 and the top cover 12. The top cover 12 and the base 13 apply a compressive force to the control slip ring 221 and the clamping element 21, thereby causing the control slip ring 221 and the top cover 12 to compress the damping block 16. The damping block 16 deforms, increasing the contact area between the damping block 16 and the control slip ring 221, and between the damping block 16 and the top cover 12. This increases the friction between the control slip ring 221 and the top cover 12, ensuring that the control slip ring 221 can continuously remain at any position on the preset path. This ensures the stability of the second through hole 23 formed by all the clamping elements 21, and ensures the stability of the clamping element 21 in clamping the fixed part. Preferably, the number of damping blocks 16 is not less than 3. By controlling the number of damping blocks 16, the friction coefficient between the control slip ring 221 and the top cover 12 is controlled. In combination with controlling the magnitude of the squeezing force between the control slip ring 221 and the top cover 12, the friction force between the control slip ring 221 and the top cover 12 is controlled so that it meets the friction force requirement.

[0033] In a further optimized design, a control handle 223 is fixedly connected to a control slip ring 221. A groove is provided on the top cover 12 for the control handle 223 to slide in. The groove has a first end and a second end positioned opposite each other. When the control handle 223 is positioned at the first end, the clamping assembly is in a first position; when the control handle 223 is positioned at the second end, the clamping assembly is in a second position. In this embodiment, by controlling the control handle 223, which is fixedly connected to the control slip ring 221, to slide within the groove, the control handle 223 moves between the first and second ends of the groove. When the control handle 223 is positioned at the first end, the clamping assembly is in the first position, at which point the diameter of the second through hole 23 formed by all the clamping elements 21 is at its maximum. When the control handle 223 is positioned at the second end, the clamping assembly is in the second position, and the diameter of the second through hole 23 formed by all the clamping elements 21 is at its minimum. By setting the first and second ends within the groove, the movement range of the control handle 223 is controlled, thereby controlling the diameter range of the second through hole 23.

[0034] In a further optimized design, the clamping element 21 is a semi-circular moving piece. In this embodiment, all clamping elements 21 are stacked vertically. By controlling the clamping element 21 to be semi-circular, the inner arc side of the clamping element 21 is positioned close to the center of the first through hole 11. That is, the inner arc side of the clamping element 21 is used to contact the part to be fixed. The inner arc sides of all clamping elements 21 together form the second through hole 23. By controlling the clamping element 21 to be semi-circular, the shape of the second through hole 23 is closer to a circle, making it suitable for fixing parts of more shapes.

[0035] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this application; at the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0036] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A clamping device, characterized in that, The fixture includes a clamp body (1) and a clamping assembly; the clamp body (1) has a first through hole (11) in the middle; the clamping assembly includes a plurality of clamping elements (21) and a control element (22), the control element (22) is movably disposed between the clamping elements (21) and the clamp body (1), all the clamping elements (21) together form a second through hole (23) for clamping the part to be fixed, the first through hole (11) and the second through hole (23) are arranged correspondingly, and the clamping elements (21) apply a squeezing force to the part to be fixed; based on the movable arrangement of the control element (22), the clamping elements (21) switch between a first position and a second position, and the diameter of the second through hole (23) when the clamping assembly is in the first position is greater than the diameter of the second through hole (23) when the clamping assembly is in the second position.

2. The clamping device according to claim 1, characterized in that, The clamp body (1) includes a top cover (12) and a base (13) disposed opposite to each other. The top cover (12) and the base (13) are detachably connected. The clamping element (21) is arranged between the top cover (12) and the base (13). The control element (22) is movably disposed between the top cover (12) and the base (13).

3. The clamping device according to claim 2, characterized in that, The control element (22) includes a control slip ring (221) disposed between the top cover (12) and the base (13). The control slip ring (221) has a plurality of mounting holes (222). The top cover (12) has an annular groove (14). All the mounting holes (222) are corresponding to the annular groove (14). The base (13) has a plurality of sliding holes (15). The sliding holes (15) are radially distributed along the first through hole (11). The clamping element (21) is disposed between the control slip ring (221) and the base. Between (13), the clamping element (21) is fixedly connected to a first column (211) on the side near the control slip ring (221). The end of the first column (211) passes through the mounting hole (222) and is slidably disposed in the annular groove (14). The clamping element (21) is fixedly connected to a second column (212) on the side near the base (13). The second column (212) is slidably disposed in the sliding hole (15). The first column (211) and the second column (212) are respectively disposed at both ends of the extension direction of the clamping element (21).

4. The clamping device according to claim 3, characterized in that, The number of clamping elements (21) is not less than 10.

5. The clamping device according to claim 3, characterized in that, A damping block (16) is detachably connected between the control slip ring (221) and the top cover (12). The damping block (16) is squeezed by the control slip ring (221) and the top cover (12), and the damping block (16) deforms to increase the contact area between the damping block (16) and the control slip ring (221), and between the damping block (16) and the top cover (12).

6. The clamping device according to claim 5, characterized in that, The number of damping blocks (16) is not less than 3.

7. The clamping device according to claim 3, characterized in that, The control slip ring (221) is fixedly connected to the control handle (223). The top cover (12) has a sliding groove for the control handle (223) to slide. The sliding groove has a first end and a second end that are arranged opposite to each other. When the control handle (223) is set at the first end, the clamping assembly is in the first position. When the control handle (223) is set at the second end, the clamping assembly is in the second position.

8. The clamping device according to claim 3, characterized in that, The clamping element (21) is a semi-circular moving piece.

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