A compression tool

Abstract

The utility model provides a kind of compression tool, including bearing pedestal, compression mechanism, bearing pedestal has bearing surface;Compression mechanism includes support, pressure piece, driver, support is set on bearing pedestal, pressure piece is located in the side of bearing pedestal, pressure piece can be movably set on support along the direction perpendicular to bearing surface, driver is dynamically coupled with pressure piece connection.This utility model's compression tool can be used in the installation process of electrolytic cell lamination, after electrolytic cell lamination is placed on bearing pedestal, compression mechanism utilizes driver to promote pressure piece to the electrolytic cell lamination placed on bearing pedestal and is compressed, so that compression tool realizes the compression of electrolytic cell lamination by the thrust of driver, replace the original mode of gradually pre-tightening each screw rod using hydraulic wrench, to greatly improve work efficiency, while it is favorable to guarantee the parallelism of final electrolytic cell lamination, to improve the assembly quality after electrolytic cell lamination compression.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production equipment technology, and in particular to a clamping tool. Background Technology

[0002] Currently, hydrogen electrolyzers consist of multiple layers of laminated plates and electrodes. To ensure sufficient sealing between the laminates and prevent leakage, in addition to installing sealing rings between the laminates, a certain pressure needs to be applied between them. Common bipolar plate structures in electrolyzers employ a multi-screw tightening method. Each layer of laminates is compressed by gradually tightening each screw using a hydraulic wrench. However, due to the large number of screws, this gradual pre-tightening method is not only inefficient but also makes it difficult to guarantee the final parallelism of the laminates. Utility Model Content

[0003] The purpose of this utility model is to provide a clamping fixture, which aims to solve the problem that the existing electrolytic cell installation pre-tightening method is not only inefficient, but also difficult to guarantee the parallelism of the final electrolytic cell stack.

[0004] To solve the above-mentioned technical problems, the present invention provides a clamping fixture, comprising:

[0005] A support base having a support surface for supporting a workpiece;

[0006] A clamping mechanism includes a bracket, a pressing member, and a driver. The bracket is disposed on the bearing base, and the pressing member is located on the side of the bearing base near the bearing surface. The pressing member is movably disposed on the bracket in a direction perpendicular to the bearing surface to press a workpiece placed on the bearing surface. The driver is dynamically coupled to the pressing member to drive the pressing member to move.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] The clamping fixture of this utility model can be used in the installation process of electrolytic cell stacks. After the electrolytic cell stacks are placed on the bearing surface of the bearing base, the clamping mechanism uses a driver to push the pressing component to clamp the electrolytic cell stacks placed on the bearing base. In this way, the clamping fixture achieves the clamping of the electrolytic cell stacks through the thrust of the driver, replacing the original method of using a hydraulic wrench to gradually pre-tighten each screw, thereby greatly improving work efficiency. At the same time, it helps to ensure the parallelism of the final electrolytic cell stacks, thus improving the assembly quality after the electrolytic cell stacks are clamped. Attached Figure Description

[0009] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0010] Figure 1 This is a schematic diagram of the clamping fixture in an embodiment of the present invention;

[0011] Figure 2 for Figure 1 Schematic diagram of the structure of the load-bearing base;

[0012] Figure 3 for Figure 1 Schematic diagram of the intermediate clamping mechanism;

[0013] Figure 4 for Figure 3 Structural diagram of the middle flange section;

[0014] Figure 5 for Figure 3 A schematic diagram of the connection between the middle pressure component and the driver;

[0015] Figure 6 for Figure 3 A schematic diagram of the structure at the central guide post.

[0016] Explanation of reference numerals in the accompanying drawings of this utility model:

[0017] Clamping fixture 100, bearing base 1, bearing surface 11, annular support pad 12, positioning hole 121, telescopic support foot 13, interface part 14, limiting hole 141, fixed support foot 15, clamping mechanism 2, bracket 21, crossbeam structure 211, support leg 212, lifting lug 213, guide hole 214, guide sleeve 215, pressing part 22, waist-shaped hole 221, driver 23, connecting shaft 231, cotter pin 232, flange part 24, adjusting nut 25, guide column 26, buffer part 261, lifting chain 3, screw connection 4, workpiece 200.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] This utility model provides a clamping fixture, which can be used in the installation process of workpieces such as electrolytic cells. The following description will take the installation process of the clamping fixture in an electrolytic cell as an example. Figures 1 to 6 A preferred embodiment of the clamping fixture provided by this utility model is shown.

[0023] Please see Figures 1 to 3 In this embodiment, the clamping fixture 100 includes a bearing base 1 and a clamping mechanism 2. The bearing base 1 has a bearing surface 11 for bearing the workpiece 200. The clamping mechanism 2 includes a bracket 21, a pressing member 22 and a driver 23. The bracket 21 is disposed on the bearing base 1. The pressing member 22 is located on the side of the bearing base 1 close to the bearing surface 11. The pressing member 22 is movably disposed on the bracket 21 in a direction perpendicular to the bearing surface 11 so as to press the workpiece 200 placed on the bearing surface 11 by the pressing member 22. The driver 23 is dynamically coupled to the pressing member 22 so as to drive the pressing member 22 to move.

[0024] Specifically, the workpiece 200 includes a multi-layer electrolytic cell stack, which can be stacked sequentially on the bearing surface 11 of the bearing base 1 along a direction perpendicular to the bearing surface 11. Hereinafter, the direction perpendicular to the bearing surface 11 is defined as the up-down direction, and the orientation of the bearing surface 11 is defined as upward. The bearing surface 11 is the upper surface of the bearing base 1. The electrolytic cell stack can be placed on the bearing surface 11 of the bearing base 1, and a bearing area adapted to the shape of the electrolytic cell stack is formed on the bearing surface 11. Thus, when the electrolytic cell stack is placed on the bearing surface 11, the electrolytic cell stack is located within the bearing area of ​​the bearing surface 11.

[0025] The pressing mechanism 2 is mounted on the support base 1 via a bracket 21. The pressing member 22 of the pressing mechanism 2 is located on the upper side of the support base 1, and the pressing member 22 is vertically opposite to the bearing area of ​​the bearing surface 11. The pressing member 22 is movably mounted on the bracket 21, thus pressing the electrolytic cell stack placed on the support base 1 downwards. The specific shape and style of the pressing member 22 can be set according to the actual situation. For example, the pressing member 22 can be block-shaped, plate-shaped, or disc-shaped. Optionally, please refer to Figure 1 and Figure 3 In this embodiment, the pressing member 22 is a pressure plate. The shape of the pressing member 22 is usually compatible with the shape of the electrolytic cell stack, so the pressing member 22 can be set as a disc-shaped pressure plate. This is beneficial for pressing the electrolytic cell stack downwards by the pressing member 22. The following will describe the pressing member 22 as a pressure plate as an example.

[0026] The driver 23 of the clamping mechanism 2 is mounted on the bracket 21. The driving end of the driver 23 is connected to the pressing member 22, thus the driver 23 can drive the pressing member 22 to move up and down. When the driver 23 drives the pressing member 22 to the upper limit position, the electrolytic cell stack can be placed on the bearing surface 11 of the bearing base 1. At this time, the electrolytic cell stack is located directly below the pressing member 22 and is arranged vertically at an interval from the pressing member 22. When the driver 23 drives the pressing member 22 to the lower limit position, the pressing member 22 abuts against the upper side of the electrolytic cell stack placed on the bearing base 1, so that the driver 23 pushes the pressing member 22 to clamp the electrolytic cell stack placed on the bearing base 1. The driver 23 can be a motor, cylinder, or hydraulic cylinder, etc. Optionally, please refer to [reference needed]. Figure 1 , Figure 3 and Figure 5 In this embodiment, the actuator 23 is a hydraulic cylinder, and the following description will take the actuator 23 as a hydraulic cylinder as an example.

[0027] The clamping fixture 100 quickly clamps the electrolytic cell stacks by combining the bearing base 1 and the clamping mechanism 2. After clamping, the electrolytic cell stacks can be held in place by locking clamps or similar means before being removed from the clamping fixture 100.

[0028] The clamping fixture 100 of this utility model can be used in the installation process of electrolytic cell stacks. After the electrolytic cell stacks are placed on the bearing surface 11 of the bearing base 1, the clamping mechanism 2 uses the driver 23 to push the pressing member 22 to clamp the electrolytic cell stacks placed on the bearing base 1. In this way, the clamping fixture 100 achieves the clamping of the electrolytic cell stacks through the thrust of the driver 23, which replaces the original method of using a hydraulic wrench to gradually pre-tighten each screw, thereby greatly improving the work efficiency. At the same time, it helps to ensure the parallelism of the final electrolytic cell stacks, thereby improving the assembly quality after the electrolytic cell stacks are clamped.

[0029] Optionally, please refer to Figure 1 and Figure 2 In this embodiment, an annular support pad 12 extending circumferentially along the workpiece 200 is provided on the bearing surface 11. The annular support pad 12 is used to abut against the side of the workpiece 200 away from the pressing member 22.

[0030] Specifically, an annular support pad 12 extending circumferentially along the bearing area is provided in the bearing area of ​​the bearing surface 11. When the electrolytic cell stack is placed on the bearing surface 11 of the bearing base 1, the annular support pad 12 abuts against the lower side of the electrolytic cell stack, thereby supporting the electrolytic cell stack. The annular support pad 12 not only positions the electrolytic cell stack on the bearing surface 11 but also helps protect the electrolytic cell stack from being scratched by the bearing base 1. The hardness of the material of the annular support pad 12 is usually lower than that of the material of the bearing base 1. For example, the material of the annular support pad 12 can be nylon, which is more conducive to protecting the electrolytic cell stack from being scratched by the bearing base 1.

[0031] The annular support pad 12 can be fixedly installed on the bearing base 1 by means of adhesive bonding, snap-fit ​​fixing, or screw fixing. Optionally, please refer to Figure 1 and Figure 2 In this embodiment, the annular support pad 12 is provided with a positioning hole 121, which is used to install a positioning pin. The positioning pin is used to form a positioning engagement with the pin hole on the electrolytic cell stack, so as to position the electrolytic cell stack on the annular support pad 12.

[0032] The bottom of the support base 1 is provided with telescopic support legs 13 and / or fixed support legs 15 to support the support base 1. Optionally, please refer to Figure 1 and Figure 2 In this embodiment, a fixed support foot 15 is provided at one end of the bearing base 1 away from the bearing surface 11, and multiple fixed support feet 15 are provided at intervals along the circumference of the bearing base 1.

[0033] Specifically, the bottom of the bearing base 1 is provided with multiple fixed support legs 15 to support the bearing base 1. The fixed support legs 15 can be fixedly installed on the bottom of the bearing base 1 by welding or bolting. The specific number of fixed support legs 15 can be set according to the actual situation. For example, in this embodiment, the bearing base 1 is a square base, and four fixed support legs 15 are provided. The four fixed support legs 15 are respectively set at the four corners of the bearing base 1. The following description will take the bearing base 1 as a square base as an example.

[0034] Optionally, please refer to Figure 1 and Figure 2 In this embodiment, a telescopic support foot 13 is provided at the end of the bearing base 1 away from the bearing surface 11. The telescopic support foot 13 is configured to extend and retract in a direction perpendicular to the bearing surface 11. Multiple telescopic support feet 13 are provided at intervals along the circumference of the bearing base 1.

[0035] Specifically, the bottom of the support base 1 is provided with multiple telescopic support legs 13 that can be adjusted vertically. These telescopic support legs 13 allow for adjustment of the levelness of the support surface 11 of the support base 1, thus enabling the support base 1 to have a certain function of adjusting the levelness of the support surface 11. The specific number of telescopic support legs 13 can be set according to actual conditions. For example, in this embodiment, four telescopic support legs 13 are provided, and the four telescopic support legs 13 are respectively located at the four corners of the support base 1.

[0036] There are several ways to achieve the vertical extension and retraction adjustment of the telescopic support leg 13. For example, the telescopic support leg 13 can be a hydraulic support leg. Optionally, please refer to [link to relevant documentation]. Figure 1 and Figure 2 In this embodiment, the telescopic support foot 13 includes a support base and a screw extending in the vertical direction. The support base is located at the bottom of the bearing base 1 and has a threaded hole that engages with the screw. Thus, by rotating the screw on the telescopic support foot 13, the levelness of the bearing surface 11 of the bearing base 1 can be adjusted.

[0037] The bracket 21 is mounted on the bearing base 1 and can be fixed to the bearing base 1 by welding or bolting. The bracket 21 can be integrally formed with the bearing base 1; or the bracket 21 can be detachably connected to the bearing base 1. The following will describe the detachable connection between the bracket 21 and the bearing base 1 as an example.

[0038] The bracket 21 and the bearing base 1 can be detachably connected via a threaded connection, snap-fit ​​connection, or pin connection, etc. Figures 1 to 4 In this embodiment, the bearing surface 11 is provided with a plurality of interface portions 14 surrounding the workpiece 200. The end of the bracket 21 near the bearing base 1 is provided with a plurality of flange portions 24 corresponding to the plurality of interface portions 14. Each flange portion 24 is detachably connected to a corresponding interface portion 14 by a screw connector 4.

[0039] Specifically, the bearing surface 11 of the bearing base 1 is provided with multiple interface portions 14, which are arranged around the bearing area of ​​the bearing surface 11. Each interface portion 14 has a threaded hole corresponding to the bolted fitting 4. The lower end of the bracket 21 is provided with multiple flange portions 24, each flange portion 24 has a mounting hole corresponding to the bolted fitting 4, and the multiple flange portions 24 are arranged in a one-to-one correspondence with the multiple interface portions 14. When the clamping mechanism 2 is installed on the bearing base 1, each flange portion 24 on the bracket 21 is mated with a corresponding interface portion 14 on the bearing base 1 and fixedly connected by the bolted fitting 4, thereby detachably installing the clamping mechanism 2 on the bearing base 1. The following will describe the detachable connection between the bearing base 1 and the clamping mechanism 2 through the interface portions 14 and flange portions 24 as an example.

[0040] The specific shape and style of the bracket 21 can be set according to the actual situation. Optionally, please refer to Figure 1 and Figure 3 In this embodiment, the support 21 includes a crossbeam structure 211 and legs 212. The crossbeam structure 211 is located on the side of the pressing member 22 away from the bearing surface 11. The pressing member 22 and the driver 23 are both disposed on the crossbeam structure 211. The legs 212 extend in a direction perpendicular to the bearing surface 11. One end of the legs 212 is disposed on the bearing base 1, and the other end of the legs 212 away from the bearing base 1 is disposed on the crossbeam structure 211. Multiple legs 212 are disposed at intervals along the circumference of the crossbeam structure 211.

[0041] Specifically, the crossbeam structure 211 is located on the upper side of the bearing base 1, and the support legs 212 are arranged to extend in the vertical direction. The upper end of the support legs 212 is set on the crossbeam structure 211, and the lower end of the support legs 212 is set on the bearing base 1. Multiple support legs 212 are arranged at intervals along the circumference of the crossbeam structure 211 (i.e., the circumference of the pressing member 22). This arrangement of the bracket 21 is relatively simple.

[0042] The specific number of outriggers 212 can be set according to the actual situation; there can be two, three, four, five, or more outriggers 212. For example, please refer to... Figure 1 and Figure 3 In this embodiment, the crossbeam structure 211 is arranged in a herringbone shape. The crossbeam structure 211 includes three connected crossbeams, each with a proximal end and a distal end. The proximal ends of the three crossbeams are connected to form the middle part of the crossbeam structure 211. Three support legs 212 are provided, each located at the distal end of one of the three crossbeams. The following description will use the example of the crossbeam structure 211 being arranged in a herringbone shape and having three support legs 212.

[0043] The lower end of the bracket 21 is provided with a flange 24, that is, the lower end of the support leg 212 is provided with a flange 24. Three flanges 24 are respectively provided at the lower ends of the three support legs 212, and three interface portions 14 are provided on the bearing surface 11 corresponding to the three flanges 24. Optionally, please refer to... Figures 1 to 4 In this embodiment, each interface part 14 is provided with a plug hole 141 on its upper surface. When the flange part 24 on each support leg 212 is connected to a corresponding interface part 14, the lower end of each support leg 212 is inserted into the plug hole 141 on the corresponding interface part 14. In this way, the connection and positioning between the lower end of the support leg 212 and the plug hole 141 can be achieved through the plug-in cooperation between the flange part 24 on the three support legs 212 and the three interface parts 14.

[0044] Optionally, please refer to Figure 1 and Figure 3 In this embodiment, a movable adjustment structure is provided between the support leg 212 and the crossbeam structure 211 so that the crossbeam structure 211 is movable and adjustable relative to the support leg 212.

[0045] Specifically, a movable adjustment structure is provided between the upper end of the outrigger 212 and the crossbeam structure 211. The installation and positioning of the crossbeam structure 211 can be adjusted by moving it up and down relative to the outrigger 212, and the length of the outrigger 212 can be adjusted by moving it up and down.

[0046] The specific configuration of the sliding adjustment structure can be set according to the actual situation. For example, the sliding adjustment structure can be a threaded connection structure or a snap-fit ​​connection structure. Optionally, please refer to [link to relevant documentation]. Figure 1 and Figure 3 In this embodiment, the movable adjustment structure includes a through hole (not shown in the figure) and an adjusting nut 25. The through hole is disposed through the crossbeam structure 211, and the end of the support leg 212 away from the bearing base 1 passes through the crossbeam structure 211 through the through hole. The adjusting nut 25 is disposed at the end of the support leg 212 away from the bearing base 1 and is threadedly connected to the support leg 212. There are two adjusting nuts 25, and the two adjusting nuts 25 respectively abut against the two sides of the crossbeam structure 211 in the extension direction of the support leg 212.

[0047] Specifically, each of the three crossbeams has a through hole extending vertically from its distal end, and the upper ends of the three support legs 212 pass through these through holes, each pointing upwards. Each support leg 212 has an external thread on its upper outer circumference and is fitted with two adjusting nuts 25. The two adjusting nuts 25 on each support leg 212 abut against the upper and lower sides of the corresponding crossbeam, respectively. Thus, by loosening the adjusting nuts 25 on the support leg 212, the support leg 212 can be moved vertically relative to the crossbeam structure 211 to adjust its length. After adjusting the length of the support leg 212, the adjusting nuts 25 on the support leg 212 are tightened again.

[0048] Optionally, please refer to Figure 1 and Figure 3 In this embodiment, a lifting lug 213 is provided on the surface of the beam structure 211 away from the pressing member 22.

[0049] Specifically, the top of the support 21 is provided with a lifting lug 213, and a lifting chain 3 can be installed at the lifting lug 213. In this way, the clamping fixture 100 can be connected to the crane hook via the lifting chain 3 to realize the transfer of the electrolytic cell stacked plates. The specific number of lifting lugs 213 can be set according to the actual situation. For example, there can be one, two, three, four or more lifting lugs 213. In this embodiment, there are three lifting lugs 213, which are respectively set on three crossbeams. The three lifting lugs 213 can be connected to the three-legged lifting chain 3. The following description will take the case of three lifting lugs 213 as an example.

[0050] The clamping fixture 100 mainly consists of a support base 1, a clamping mechanism 2, and accessories such as a three-legged lifting chain 3. The electrolytic cell stacks are pre-placed on the support base 1 and connected to the three-legged lifting chain 3 via a crane hook. The entire clamping mechanism 2 is then lifted onto and secured to the support base 1. The support base 1 uses a drive 23 to push the pressing member 22 to clamp the electrolytic cell stacks placed on the support base 1.

[0051] Optionally, please refer to Figure 1 , Figure 3 and Figure 6 In this embodiment, a guide hole 214 is provided through the bracket 21, and a guide post 26 extending in a direction perpendicular to the bearing surface 11 is provided between the bracket 21 and the pressing member 22. One end of the guide post 26 near the bearing base 1 is provided on the pressing member 22, and the other end of the guide post 26 away from the bearing base 1 passes through the bracket 21 from the guide hole 214. The guide post 26 and the guide hole 214 form a sliding guide fit in a direction perpendicular to the bearing surface 11.

[0052] Specifically, the bracket 21 is provided with one or more guide holes 214, which penetrate the bracket 21 vertically. A guide post 26 extending vertically is provided at the guide hole 214. The lower end of the guide post 26 is located on the lower side of the bracket 21 and is connected to the top of the pressing member 22. The upper end of the guide post 26 faces upward and passes through the bracket 21 through the guide hole 214. The guide post 26 and the guide hole 214 form a sliding guide fit in the vertical direction. In this way, the guide post 26 and the guide hole 214 are provided between the bracket 21 and the pressing member 22 to ensure the parallelism of the vertical movement of the pressing member 22.

[0053] Guide posts 26 can be provided one or more; optionally, please refer to [reference needed]. Figure 1 , Figure 3 and Figure 6 In this embodiment, three guide posts 26 are provided, and three guide holes 214 are respectively provided on the three crossbeams corresponding to the three guide posts 26. The three guide posts 26 and the three guide holes 214 form a sliding guide engagement in the vertical direction. In this way, three sets of guide posts 26 and guide holes 214 are provided between the bracket 21 and the pressing member 22, which helps to ensure the parallelism of the vertical movement of the pressing member 22.

[0054] Optionally, please refer to Figure 1 , Figure 3 and Figure 6 In this embodiment, a guide sleeve 215 is provided at the guide hole 214, and the guide sleeve 215 and the guide post 26 form a sliding guide fit in the direction perpendicular to the bearing surface 11.

[0055] Specifically, the guide sleeve 215 can be a copper sleeve, etc. The sliding part of the guide post 26 can reduce frictional resistance through the guide sleeve 215. The guide sleeve 215 can be fixed at the guide hole 214 by means of screw fixing, pin fixing or interference fit.

[0056] Optionally, please refer to Figure 1 , Figure 3 and Figure 6 In this embodiment, a buffer 261 is provided at the end of the guide post 26 away from the bearing base 1. When the pressing member 22 is at the extreme position closest to the bearing surface 11, the buffer 261 abuts against the side of the bracket 21 away from the bearing surface 11.

[0057] Specifically, the upper end of the guide post 26 is located on the upper side of the bracket 21 (i.e., the crossbeam structure 211), and a buffer member 261 is provided at the upper end of the guide post 26. When the pressing member 22 is in the lower limit position, the buffer member 261 abuts against the upper side of the crossbeam structure 211, thus buffering the gap between the bracket 21 and the guide post 26. The buffer member 261 can be fixed to the guide post 26 by means of screw fixing, snap-fit ​​fixing, or adhesive fixing.

[0058] The actuator 23 is typically located in the middle of the bracket 21 (i.e., the beam structure 211). The actuator 23 can be fixed to the beam structure 211 by means of screws, pins, or welding. Alternatively, please refer to... Figure 1 , Figure 3 and Figure 5 In this embodiment, the drive end of the driver 23 is provided with a connecting shaft 231 extending in a direction parallel to the bearing surface 11, and the pressing member 22 is provided with a waist-shaped hole 221 through which the connecting shaft 231 passes. The waist-shaped hole 221 extends in a direction perpendicular to the bearing surface 11, and the connecting shaft 231 is movable relative to the pressing member 22 along the waist-shaped hole 221.

[0059] Specifically, the drive end of the actuator 23 is downwardly positioned and has a connecting shaft 231 extending horizontally. The top of the pressing member 22 has a connecting lug (not shown in the figure) protruding upwards. A waist-shaped hole 221 is provided through the connecting lug along the axial direction of the connecting shaft 231. The waist-shaped hole 221 extends vertically, with the middle part of the connecting shaft 231 located inside the waist-shaped hole 221 and both ends of the connecting shaft 231 located outside the waist-shaped hole 221. Thus, by providing the waist-shaped hole 221 between the drive end of the actuator 23 and the pressing member 22, the thrust of the actuator 23 can be prevented from directly shearing the connecting shaft 231 when it is pushed out. The connecting shaft 231 only bears the shearing force brought by the weight of the pressing member 22. The connecting shaft 231 can be a pin, with one end of the pin passing through the waist-shaped hole 221 and having a cotter pin 232.

[0060] The clamping fixture 100 is a new type of fixture used for the transfer and rapid clamping of electrolytic cell stacks. It not only significantly improves clamping efficiency but also enhances assembly quality. The clamping fixture 100 clamps the electrolytic cell stacks through the thrust of the driver 23, replacing the traditional method of using a hydraulic wrench to pre-tighten each screw individually, thus greatly improving work efficiency.

[0061] The clamping mechanism 2 is designed with three sets of guide columns 26 to ensure that the pressing part 22 and the bearing base 1 remain parallel during the clamping process, thereby effectively improving the assembly quality after the electrolytic cell stack is clamped. In addition, the length of the three legs 212 of the clamping mechanism 2 is adjustable, and the initial highest point position can be adjusted according to the electrolytic cell stack with different thicknesses, greatly enhancing the applicability of the clamping fixture.

[0062] The matching support base 1 facilitates the mass assembly of electrolytic cell laminations and can meet various needs such as transportation, pressing, and storage. The support base 1 also has the function of adjusting the level of the assembly surface. By rotating the screw on the telescopic support foot 13, the level of the assembly surface of the support base 1 can be precisely adjusted.

[0063] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A clamping fixture, characterized in that, include: A support base having a support surface for supporting a workpiece; A clamping mechanism includes a bracket, a pressing member, and a driver. The bracket is disposed on the bearing base, and the pressing member is located on the side of the bearing base near the bearing surface. The pressing member is movably disposed on the bracket in a direction perpendicular to the bearing surface to press a workpiece placed on the bearing surface. The driver is dynamically coupled to the pressing member to drive the pressing member to move.

2. The clamping fixture according to claim 1, characterized in that, An annular support pad extending circumferentially along the workpiece is provided on the bearing surface. The annular support pad is used to abut against the side of the workpiece away from the pressing member.

3. The clamping fixture according to claim 1, characterized in that, The bearing base is provided with a telescopic support foot at one end away from the bearing surface. The telescopic support foot is adjustable in a direction perpendicular to the bearing surface. Multiple telescopic support feet are provided at intervals along the circumference of the bearing base.

4. The clamping fixture according to claim 1, characterized in that, The bracket and the supporting base are detachably connected.

5. The clamping fixture according to claim 4, characterized in that, The bearing surface is provided with multiple interface portions surrounding the workpiece. The end of the bracket near the bearing base is provided with multiple flange portions corresponding to the multiple interface portions. Each flange portion is detachably connected to a corresponding interface portion by a screw connector.

6. The clamping fixture according to claim 1, characterized in that, The support includes: A beam structure is provided, wherein the beam structure is located on the side of the pressing member away from the bearing surface, and the pressing member and the actuator are both disposed on the beam structure. The support legs extend in a direction perpendicular to the bearing surface. One end of the support leg is disposed on the bearing base, and the other end of the support leg away from the bearing base is disposed on the crossbeam structure. Multiple support legs are arranged at intervals along the circumference of the crossbeam structure.

7. The clamping fixture according to claim 6, characterized in that, A movable adjustment structure is provided between the support leg and the crossbeam structure so that the crossbeam structure can be moved and adjusted relative to the support leg.

8. The clamping fixture according to claim 7, characterized in that, The movable adjustment structure includes: A through hole is provided through the beam structure, and the end of the support leg away from the bearing base passes through the beam structure from the through hole; An adjusting nut is provided at one end of the support leg away from the bearing base and is threadedly connected to the support leg. Two adjusting nuts are provided, and the two adjusting nuts respectively abut against the two sides of the crossbeam structure in the extension direction of the support leg.

9. The clamping fixture according to claim 6, characterized in that, The beam structure has lifting lugs on its surface away from the pressing member.

10. The clamping fixture according to claim 1, characterized in that, A guide hole is provided through the bracket, and a guide post is provided between the bracket and the pressing member, extending in a direction perpendicular to the bearing surface. One end of the guide post near the bearing base is provided on the pressing member, and the other end of the guide post away from the bearing base passes through the bracket from the guide hole. The guide post and the guide hole form a sliding guide engagement in a direction perpendicular to the bearing surface.

11. The clamping fixture according to claim 10, characterized in that, A guide sleeve is provided at the guide hole, and the guide sleeve and the guide post form a sliding guide engagement in a direction perpendicular to the bearing surface; and / or, A buffer is provided at the end of the guide post away from the bearing base. When the pressing member is at its limit position closest to the bearing surface, the buffer abuts against the side of the bracket away from the bearing surface.

12. The clamping fixture according to claim 1, characterized in that, The actuator is a hydraulic cylinder; and / or, The drive end of the driver is provided with a connecting shaft extending in a direction parallel to the bearing surface. The pressing member is provided with an oblong hole through which the connecting shaft passes. The oblong hole extends in a direction perpendicular to the bearing surface. The connecting shaft is movable relative to the pressing member along the oblong hole.

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