Crimping and fastening tool and device for electrolytic cell

Abstract

The utility model discloses an electrolytic bath crimping fastening tool and device, and belongs to the field of electrolytic bath assembly. Comprising a connecting plate, a fixed plate and a movable plate. A fixing plate is fixed on the connecting plate, and a plurality of first clamping blocks are formed at the bottom of the fixing plate; a movable plate is arranged between the connecting plate and the fixed plate, and a plurality of second clamping blocks are formed on the movable plate; and the movable plate can move relative to the fixed plate to adjust the distance between the first clamping block and the second clamping block. According to the utility model, the relative position of the fixed plate and the lower fixed plate and the distance between the first clamping block and the second clamping block are adjusted to lock and release a bolt head, so that the stress is convenient to release, the electrolytic cell can be taken out after being assembled, the working efficiency, the quality and the consistency of products are improved, the labor intensity is reduced, and the standardized management is realized.

Description

Technical Field

[0001] The utility model belongs to the field of electrolytic cell assembly, in particular to an electrolytic cell crimping and fastening tool and device. Background Art

[0002] The main components of a PEM electrolyzer are, from the inside to the outside, the proton exchange membrane, the cathode and cathode catalyst layers, the cathode and cathode gas diffusion layers, and the cathode and cathode end plates. The diffusion layer, catalyst layer, and proton exchange membrane form the membrane electrode, which is the main site for material transmission and electrochemical reactions in the entire electrolyzer. The characteristics and structure of the membrane electrode directly affect the performance and life of the PEM electrolyzer.

[0003] See attached Figure 1 The fixing assembly of the PEM electrolyzer usually includes a screw and a nut, and the stack assembly has a through hole for the screw to pass through, and the through holes are multiple and arranged at intervals along the circumference of the stack assembly. When assembling the above electrolyzer, that is, when packing the above electrolyzer, the screws can be first inserted into the through holes of the stack assembly, and then the stack assembly can be pressurized so that the stack assembly reaches a preset pressure. Finally, under the condition of keeping the stack assembly pressurized, nuts can be installed on the upper and lower ends of the screw respectively, so that the nut inserted at the lower end of the screw abuts against the lower end plate, and the nut inserted at the upper end of the screw abuts against the upper end plate, thereby completing the press-fitting of the electrolyzer.

[0004] In the prior art, a slot corresponding to the bolt head is generally provided on the working plate to clamp the bolt. However, the torque required to press the electrolytic cell is very large, which causes the friction between the bolt head and the tooling to increase after the radial edge of the bolt head is pressed into the softer tooling. After tightening the nut with a wrench, it is difficult to remove the bolt head of the electrolytic cell. Therefore, it is very important to design the assembly tooling to facilitate the release of stress between the bolt and the positioning slot. Utility Model Content

[0005] In order to overcome the above technical defects, the utility model provides an electrolytic cell crimping and fastening tool and device to solve the problems involved in the background technology.

[0006] The utility model provides an electrolytic cell crimping fastening tool and device, comprising:

[0007] Connecting plate;

[0008] A fixing plate fixed on the connecting plate, with a plurality of first clamping blocks formed at the bottom of the fixing plate;

[0009] The movable plate is arranged between the connecting plate and the fixed plate, and a plurality of second clamping blocks are formed on the movable plate; and the movable plate can move relative to the fixed plate to adjust the distance between the first clamping block and the second clamping block.

[0010] Preferably or optionally, the fixing plate comprises:

[0011] A first main body portion, wherein a plurality of long strip holes are arranged on the first main body portion;

[0012] A plurality of first clamping blocks are alternately distributed at the bottom of the first main body, and a slideway is formed between two adjacent first clamping blocks; and a reserved area of ​​the first clamping block extends into the long strip hole to form a supporting step.

[0013] Preferably or optionally, the movable plate comprises:

[0014] A second body part, wherein a plurality of notches are provided on the first body part, and the first clamping block is embedded in the notches;

[0015] A plurality of second clamping blocks are formed inside the notch and are arranged opposite to the first clamping blocks;

[0016] A push plate is arranged at one end of the second body portion.

[0017] Preferably or optionally, a positioning plate is fixedly mounted on the fixing plate, and an inner frame of the positioning plate is adapted to the end plate of the electrolytic cell.

[0018] Preferably or optionally, an elastic member is provided between one end of the push plate and the fixed plate.

[0019] Preferably or optionally, it also includes:

[0020] The first lever structure comprises a rotating pressure rod horizontally arranged on the connecting plate; a resistance arm of the rotating pressure rod is located at the pushing plate, and a power arm of the rotating pressure rod extends to one end of the connecting plate;

[0021] The second lever structure comprises a mounting plate arranged at the outer edge of the connecting plate, and a quick clamp arranged on the mounting plate, wherein the resistance arm of the clamp is located at the power arm of the rotating pressure rod.

[0022] Preferably or optionally, the resistance arm of the clamp is provided with an adjustment screw.

[0023] The utility model also provides an electrolytic cell crimping and fastening device, comprising: a servo press, a tooling arranged on the servo press and having the electrolytic cell crimping and fastening tooling, and a movable pressing plate arranged on the upper part of the fastening tooling.

[0024] Preferably or optionally, the movable pressing plate is adapted to the contact surface of the electrolytic cell end plate.

[0025] Preferably or optionally, a plurality of avoidance holes are provided on the movable pressing plate.

[0026] The utility model relates to an electrolytic cell crimping and fastening tool and device, which has the following beneficial effects compared with the prior art: the utility model adjusts the relative positions of a fixed plate and a lower fixed plate, adjusts the spacing between the first clamping block and the second clamping block, is used to lock and release the bolt head, and facilitates the release of stress, thereby facilitating the removal of the electrolytic cell after assembly, improving operating efficiency, quality and product consistency, reducing labor intensity, and realizing standardized management. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an existing PEM electrolyzer.

[0028] Figure 2 It is a structural schematic diagram of the crimping and fastening tooling in the utility model.

[0029] Figure 3 It is a bottom view of the fixing plate in the utility model.

[0030] Figure 4 It is a top view of the fixing plate in the utility model.

[0031] Figure 5 It is a structural schematic diagram of the movable plate in the utility model.

[0032] Figure 6 It is a structural schematic diagram of the positioning plate in the utility model.

[0033] The accompanying drawings are marked as follows:

[0034] 110. Connecting plate;

[0035] 120, fixing plate; 121, first main body; 122, long strip hole; 123, first clamping block; 124, slideway; 125, supporting step;

[0036] 130, movable plate; 131, second main body; 132, notch; 133, second clamping block; 134, push plate;

[0037] 140, positioning plate; 141, inner frame;

[0038] 150. Elastic parts;

[0039] 161, rotating pressure rod; 162, top block;

[0040] 171, mounting plate; 172, quick clamp; 172a, pressure arm end; 172b, handle end;

[0041] 200, electrolytic cell; 210, lower end plate; 220, bolt head; 230, disc spring. DETAILED DESCRIPTION

[0042] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0043] Example 1

[0044] See attached Figures 2 to 6 , an electrolytic cell crimping and fastening tool, including: a connecting plate 110, a fixed plate 120 and a movable plate 130.

[0045] The fixed plate 120 is fixed on the connecting plate 110, and a plurality of first clamping blocks 123 are formed at the bottom of the fixed plate 120; the movable plate 130 is arranged between the connecting plate 110 and the fixed plate 120, and a plurality of second clamping blocks 133 are formed on the movable plate 130; and the movable plate 130 can be moved relative to the fixed plate 120, and the spacing between the first clamping block 123 and the second clamping block 133 is adjusted to lock and release the bolt head 220, so as to facilitate the release of stress, thereby facilitating the removal of the electrolytic cell 200 after assembly, improving the working efficiency, quality and consistency of products, reducing labor intensity and realizing standardized management.

[0046] See attached Figure 3 , Attachment Figure 4 . The fixed plate 120 includes: a first main body portion 121 and a plurality of first clamping blocks 123. A plurality of long strip holes 122 are arranged on the first main body portion 121; a plurality of first clamping blocks 123 are alternately distributed at the bottom of the first main body portion 121, and a slideway 124 is formed between two adjacent first clamping blocks 123 for installing the movable plate 130. The correct installation position of the fixed plate 120 is ensured through the interlocking action to prevent sliding, thereby ensuring the stability of the movement of the movable plate 130 and the ease of installation. In addition, a reserved area of ​​the first clamping block 123 extends into the long strip hole to form a support step 125. Preferably, the height of the support step 125, that is, the thickness of the first main body portion 121 is the same as the thickness of the disc spring 230. The avoidance hole formed by the support step 125 can realize the fixation and avoidance of the disc spring 230.

[0047] See attached Figure 5The movable plate 130 includes: a second body part 131, a plurality of second clamping blocks 133 and a push plate 134. The second body part 131 is provided with a plurality of notches 132 on the first body part 121, and the first clamping blocks 123 are fitted into the notches 132; a plurality of second clamping blocks 133 are formed inside the notches 132 and are arranged opposite to the first clamping blocks 123; and the push plate 134 is arranged at one end of the second body part 131. The arrangement of the push plate 134 facilitates the user to move the movable plate 130.

[0048] The driving mode of the movable plate 130 can be manual, semi-automatic and fully automatic. This embodiment provides a structure of a driving mode. The driving mode includes: a first lever structure and a second lever structure; the first lever structure includes a rotating pressure rod 161 horizontally arranged on the connecting plate 110; the resistance arm of the rotating pressure rod 161 is located at the push plate 134, and the power arm of the rotating pressure rod 161 extends to the outer edge of the connecting plate 110; the second lever structure includes a mounting plate 171 arranged at the outer edge of the connecting plate 110, and a quick clamp 172 arranged on the mounting, the resistance arm of the clamp is located at the power arm of the rotating pressure rod 161, and connected together through the top block 162.

[0049] In a further embodiment, a push plate 134 is provided on one side of the movable plate 130 to facilitate the user to move the movable plate 130, and the movable plate 130 can be driven in three modes: manual, semi-automatic and fully automatic. This embodiment provides a structure of a driving mode. The driving mode includes: a first lever structure and a second lever structure; the first lever structure includes a rotating pressure rod 161 horizontally arranged on the connecting plate 110; the resistance arm of the rotating pressure rod 161 is located at the push plate 134, and the power arm of the rotating pressure rod 161 extends to the outer edge of the connecting plate 110; the second lever structure includes a mounting plate 171 arranged at the outer edge of the connecting plate 110, and a quick clamp 172 arranged on the mounting, and the resistance arm of the clamp is located at the power arm of the rotating pressure rod 161, and connected together through the top block 162.

[0050] It is understandable that the rotating pressure rod 161 and the quick clamp 172 are both labor-saving levers, and the clamping force is enhanced by introducing the lever principle. The first lever structure applies pressure through the rotating pressure rod 161, and its power arm extends to the outer edge of the connecting plate 110, while the second lever structure (including the mounting plate 171 and the quick clamp 172) provides additional clamping force. The cooperation of the two improves the fastening efficiency. Compared with the single quick clamp 172 structure, the mechanism can clamp the bolt head 220 with greater force (lever principle, up to more than 200 kilograms); a quick clamp 172 with greater force can also be used to clamp the electrolytic cell 200, but due to the limited area of ​​the workbench and the guide columns around the workbench (the press has 4 guide columns), a circuitous structure composed of a quick clamp 172, a top block 162, and a rotating pressure rod 161 is adopted, and the quick clamp 172 is installed on the outer edge of the connecting plate 110 to change the force mode, thereby saving operating space.

[0051] In addition, an adjustment screw is provided on the resistance arm of the clamp. The adjustment screw allows the user to adjust the clamping force as needed, increasing the flexibility of use. An elastic member 150 is provided between one end of the push plate 134 and the fixed plate 120, and the elastic member 150 can realize the automatic reset of the movable plate 130.

[0052] See attached Figure 6 The fixing plate 120 is fixedly mounted with a positioning plate 140, and the fixing plate 120 and the positioning plate 140 may be a split structure or an integrated structure. The inner frame 141 of the positioning plate 140 is adapted to the end plate of the electrolytic cell 200, and can clamp the electrolytic cell 200, ensuring that the tooling can fit closely to the end plate of the electrolytic cell 200, thereby improving the stability and sealing of the assembly.

[0053] In order to facilitate understanding of the technical solution of the electrolytic cell crimping and fastening tooling, a brief description is given of its working principle: during the locking process, the movable plate 130 is moved toward the side of the fixed plate 120, the distance between the first clamp block 123 and the second clamp block 133 is adjusted, and the opposite sides of the hexagonal bolt are clamped to fix the electrolytic cell 200; during the releasing process, the movable plate 130 is moved toward the side away from the fixed plate 120, the distance between the first clamp block 123 and the second clamp block 133 is adjusted, and the bolt is released to facilitate the release of force, thereby facilitating the removal of the electrolytic cell 200 after assembly.

[0054] Example 2

[0055] See attached Figure 1, a crimping and fastening device for an electrolytic cell 200, comprising: a servo press, a crimping and fastening tooling for the electrolytic cell as described in Example 1, which is arranged on the servo press, and a movable pressing plate arranged on the upper part of the fastening tooling. The contact surface of the movable pressing plate and the end plate of the electrolytic cell 200 is matched with or larger than the end plate of the electrolytic cell 200; and a plurality of avoidance holes are arranged on the movable pressing plate, and the contact surface of the movable pressing plate and the end plate of the electrolytic cell 200 avoids the bolt holes and the inlet and outlet joint holes of the electrolytic cell 200, and the contact surface of the movable pressing plate and the end plate of the electrolytic cell 200 is matched with each other, and the contact area is greater than or equal to the effective sealing area of ​​the electrolytic cell, thereby avoiding interference with the electrolytic cell 200 during press-fitting and uneven force on the electrolytic cell 200 during press-fitting.

[0056] In order to facilitate understanding of the technical solution of the crimping and fastening device of the electrolytic cell 200, a brief description of the assembly process of the electrolytic cell 200 is given: when assembling the above-mentioned electrolytic cell 200, that is, when packaging the above-mentioned electrolytic cell 200, screws can be first inserted into the various through holes of the battery stack assembly, and then the battery stack assembly can be pressurized so that the battery stack assembly reaches a preset pressure. Finally, while keeping the battery stack assembly pressurized, nuts can be installed on the upper and lower ends of the screw respectively, so that the nut inserted through the lower end of the screw abuts against the lower end plate 210, and the nut inserted through the upper end of the screw abuts against the upper end plate, thereby completing the packaging of the electrolytic cell 200 and forming a semi-finished product of the electrolytic cell 200.

[0057] The semi-finished electrolytic cell 200 is placed vertically on the fixing plate 120 of the crimping and fastening tooling of the workbench, wherein one side of the lower end plate 210 (bolt head 220) is downward, and one side of the upper end plate (nut) is upward, and the fixing plate 120 clamps the lower end plate 210 of the electrolytic cell 200; the handle end 172b of the quick clamp 172 is turned upward or pulled so that the pressure arm end 172a contacts the top block 162; the top block 162 is connected to one end of the rotating pressure rod 161, driving the rotating pressure rod 161 The other end of the movable plate 130 of the crimping and fastening tooling is pushed forward, and the movable plate 130 cooperates with the fixed plate 120 to clamp the bolt head 220, and also fixes the opposite side of the hexagonal bolt head 220 at the lower end of the electrolytic cell 200; the movable pressing plate of the servo press is used to press the electrolytic cell 200 downward, and then the nut is tightened with a digital torque wrench; the movable pressing plate is raised, and the quick clamp 172 is pulled downward to release the hexagonal bolt head 220, and the electrolytic cell 200 is removed to complete the assembly of the finished electrolytic cell 200.

[0058] The crimping fastening device in this embodiment uses a crimping fastening tool for the clamping bolt part to lock and release the bolt head 220, which is convenient for stress release, thereby facilitating the removal of the electrolytic cell 200 after assembly, improving work efficiency, quality and product consistency, reducing labor intensity, and realizing standardized management.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. An electrolytic cell crimping and fastening tool, characterized in that: include: A connecting plate (110); A fixing plate (120) fixed on the connecting plate (110), with a plurality of first clamping blocks (123) formed at the bottom of the fixing plate (120); A movable plate (130) is arranged between the connecting plate (110) and the fixed plate (120), and a plurality of second clamping blocks (133) are formed on the movable plate (130); and the movable plate (130) can adjust the distance between the first clamping block (123) and the second clamping block (133) by moving relative to the fixed plate (120).

2. The electrolytic cell crimping and fastening tool according to claim 1, characterized in that: The fixing plate (120) comprises: A first main body portion (121), wherein a plurality of long strip-shaped holes (122) are arranged on the first main body portion (121); A plurality of first clamping blocks (123) are alternately distributed at the bottom of the first main body (121), and a slideway (124) is formed between two adjacent first clamping blocks (123); and a reserved area of ​​the first clamping block (123) extends into the long strip hole to form a supporting step (125).

3. The electrolytic cell crimping and fastening tool according to claim 2, characterized in that: The movable plate (130) comprises: A second main body portion (131), wherein a plurality of notches (132) are provided on the first main body portion (121), and the first clamping block (123) is embedded in the notches (132); A plurality of second clamping blocks (133) are formed inside the notch (132) and are arranged opposite to the first clamping blocks (123); A push plate (134) is arranged at one end of the second body portion (131).

4. The electrolytic cell crimping and fastening tool according to claim 1, characterized in that: A positioning plate (140) is fixedly mounted on the fixing plate (120), and an inner frame (141) of the positioning plate (140) is adapted to an end plate of the electrolytic cell (200).

5. The electrolytic cell crimping and fastening tool according to claim 3, characterized in that: An elastic member (150) is disposed between one end of the push plate (134) and the fixing plate (120).

6. The electrolytic cell crimping and fastening tool according to claim 5, characterized in that: Also includes: A first lever structure comprises a rotating pressure rod (161) horizontally arranged on the connecting plate (110); a resistance arm of the rotating pressure rod (161) is located at the pushing plate (134), and a power arm of the rotating pressure rod (161) extends to one end of the connecting plate (110); The second lever structure comprises a mounting plate (171) arranged at the outer edge of the connecting plate (110), and a quick clamp (172) arranged on the mounting plate, wherein the resistance arm of the clamp is located at the power arm of the rotating pressure rod (161).

7. The electrolytic cell crimping and fastening tool according to claim 6, characterized in that: The resistance arm of the clamp is provided with an adjustment screw.

8. A crimping and fastening device for an electrolytic cell, characterized in that: include: A servo press, a tooling arranged on the servo press, having the electrolytic cell crimping and fastening tooling according to any one of claims 1 to 7, and a movable pressing plate arranged on the upper part of the fastening tooling.

9. The electrolytic cell crimping and fastening device according to claim 8, characterized in that: The movable pressing plate is adapted to the contact surface of the end plate of the electrolytic cell (200) and the end plate of the electrolytic cell (200).

10. The electrolytic cell crimping and fastening device according to claim 8, characterized in that: The movable pressing plate is provided with a plurality of avoidance holes.

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