A quick assembly positioning structure for a fuel cell stack module

Abstract

The utility model discloses a kind of quick assembly positioning structure of fuel cell stack module, it is related to fuel cell stack module technical field, including locating seat and support frame, the top of the locating seat is installed with support frame, and the top of support frame is connected and installed with combination seat, and the front and rear sides of combination seat are connected and installed with first bracket, and the left and right sides of combination seat are connected and installed with second bracket.The quick assembly positioning structure of fuel cell stack module, by locating seat, support frame, combination seat, first bracket and second bracket between each other with modular structure setting, so that each component can be quickly positioned and closely connected in assembly process, this modular design not only improves assembly efficiency, but also is convenient for subsequent maintenance and replacement, reduce use cost, in addition, the quick assembly positioning structure also has good versatility and expansibility, can adapt to the assembly demand of fuel cell stack module of different specifications and models.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell stack module technology, specifically a rapid assembly and positioning structure for a fuel cell stack module. Background Technology

[0002] A fuel cell stack module is a core power generation device formed by stacking multiple individual cells in series. It is the core power generation unit of a hydrogen fuel cell system, directly converting the chemical energy of hydrogen into electrical energy through an electrochemical reaction. As the heart of the fuel cell system, the stack achieves the required power output by superimposing the individual cell voltages (typically 0.6-0.8V). It is widely used in new energy vehicles, distributed energy, and other fields, and features high efficiency and low pollution.

[0003] Conventional rapid assembly and positioning structures for fuel cell stack modules often require significant time and manpower for debugging and calibration during assembly due to the imprecise and inconvenient positioning and connection methods between components. This not only reduces assembly efficiency but also increases production costs. Furthermore, conventional rapid assembly and positioning structures have limitations in terms of versatility and scalability, making it difficult to adapt to the assembly requirements of fuel cell stack modules of different specifications and models. This, to some extent, restricts the promotion and application of fuel cell technology. Utility Model Content

[0004] The purpose of this invention is to provide a rapid assembly and positioning structure for a fuel cell stack module to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid assembly and positioning structure for a fuel cell stack module, comprising a positioning seat and a support frame. The support frame is mounted on the top of the positioning seat, and a combination seat is connected to the top of the support frame. First brackets are connected to the front and rear sides of the combination seat, and second brackets are connected to the left and right sides of the combination seat. The support frame includes a main frame body, docking holes, limiting insertion holes, support corner plates, and docking blocks. The left and right ends of the main frame body are symmetrically and vertically provided with docking holes, and the middle of the left and right ends of the main frame body is vertically provided with limiting insertion holes. Support corner plates are symmetrically arranged at the front and rear ends of the upper bottom of the main frame body, and docking blocks are provided at the middle of the front and rear ends of the upper bottom of the main frame body.

[0006] Furthermore, the positioning seat includes a base, fixing holes, limiting corner blocks, and limiting stakes. The base has four vertically opened fixing holes at the four opposite corners near the middle position, and two sets of limiting corner blocks are provided on each side of the top surface of the base near the middle position. The top two ends of the base are symmetrically and vertically provided with limiting stakes.

[0007] Further, the base, the limiting corner blocks and the limiting insertion piles are arranged in an integrated structure, and both ends of the base are provided with hole structures that match the position and structure of the butt joint holes for connecting and assembling the positioning seat and the support frame. The inner surface structure of the limiting insertion hole matches the outer surface structure of the limiting insertion pile, and the base, the limiting corner blocks and the limiting insertion piles are arranged in an integrated structure.

[0008] Further, the combination seat comprises a main seat body, combination holes and combination insertion rods, wherein the combination holes are vertically opened at four diagonal positions of the main seat body, and two groups of combination insertion rods are horizontally arranged on each of four side edges of the main seat body.

[0009] Further, the bottom of the main seat body is mounted on the top middle of the main frame body in an embedded structure, the main frame body is arranged in a "-shaped structure, and hole structures matching the structure of the combination holes are vertically opened at four diagonal positions on the top of the main frame body.

[0010] Further, the first bracket comprises a first frame plate, first assembly holes, first insertion holes, a first support block and first reinforcing angle plates. Two groups of first assembly holes are horizontally opened on one side of the first frame plate close to the combination seat, four groups of first insertion holes are vertically opened in an equidistant array on the top of the first frame plate, the first support block is arranged in the middle of the bottom of a section of the first frame plate close to the combination seat, the first reinforcing angle plates are respectively arranged on the left and right sides of the first support block, and the first frame plate, the first support block and the first reinforcing angle plates are arranged in an integrated structure.

[0011] Further, the second bracket comprises a second frame plate, second assembly holes, second insertion holes, a second support block and second reinforcing angle plates. Two groups of second assembly holes are horizontally opened on one side of the second frame plate close to the combination seat, four groups of second insertion holes are vertically opened in an equidistant array on the top of the second frame plate, the second support block is arranged in the middle of the bottom of a section of the second frame plate close to the combination seat, the second reinforcing angle plates are respectively arranged on the left and right sides of the second support block, and the second frame plate, the second support block and the second reinforcing angle plates are arranged in an integrated structure.

[0012] Further, the first insertion holes and the second insertion holes have the same structure and both match the outer surface structure of the combination insertion rods. Four groups of hole structures for assembly are respectively opened at the joints between the first support block and the front and rear sides of the main frame body, and four groups of hole structures for assembly are respectively opened at the joints between the second support block, the left and right sides of the main frame body and the butt joint block.

[0013] The present utility model provides a rapid assembly and positioning structure for a fuel cell stack module, which has the following beneficial effects: 1. The present utility model adopts the structural arrangement between the support frame and the combination base, wherein the main frame body is in a "Ω"-shaped structure, which provides a stable and reliable support foundation for the combination base. The main base body is closely connected with the middle of the top of the main frame body through the embedded structure at the bottom of the main base body. Meanwhile, hole structures matching the combination hole structures are provided at four diagonal positions of the top of the main frame body, so as to ensure accurate positioning and firm connection between the combination base and the support frame in the vertical direction, effectively avoid offset or loosening that may occur during assembly, and improve the stability and reliability of the overall structure. Meanwhile, this design also facilitates quick disassembly and reassembly, greatly improving the assembly efficiency and maintenance convenience of the fuel cell stack module. In addition, modular structural arrangements are adopted among the positioning base, the support frame, the combination base, the first bracket and the second bracket, so that each component can be quickly positioned and closely connected during the assembly process. Through the limit corner blocks and limit inserting posts on the positioning base, which cooperate with the abutting holes and limit inserting holes on the support frame, accurate abutting between the positioning base and the support frame is realized. Meanwhile, the combination inserting rods on the combination base match the first inserting holes and the second inserting holes on the first bracket and the second bracket, further ensuring the firm connection among all components. This modular design not only improves the assembly efficiency, but also facilitates subsequent maintenance and replacement, reducing the use cost. Furthermore, the rapid assembly positioning structure also has good versatility and expandability, and can adapt to the assembly requirements of fuel cell stack modules of different specifications and models. By adjusting the combined use of the positioning base, the support frame, the combination base, the first bracket and the second bracket, the assembly of fuel cell stack modules of different sizes can be easily realized, meeting the diversified demands of the market. Therefore, through its unique structural design and modular concept, efficient, stable and reliable assembly of the fuel cell stack module is realized, which provides strong support for the large-scale production and application of fuel cell stack modules.

[0014] 2. The present utility model adopts the structural arrangement between the positioning base and the support frame, wherein by means of the hole structures provided at both ends of the base that match the position structure of the abutting holes, and the matching design between the limit inserting holes and the outer surface of the limit inserting posts, the positioning base and the support frame can realize accurate abutting and firm fixation in both horizontal and vertical directions. This structural arrangement not only enhances the bearing capacity of the entire positioning structure, but also ensures the accuracy and stability of the fuel cell stack module during the assembly process, effectively preventing performance degradation or potential safety hazards caused by inaccurate abutting. Meanwhile, the above structure also simplifies the assembly process and reduces the demand for manual adjustment, thereby further improving the assembly efficiency and product quality. In addition, the integrated structural design of the positioning base and the support frame respectively makes the entire positioning structure more compact and firm, and can better adapt to various complex working environments and use requirements. This design not only improves the assembly accuracy and efficiency of the fuel cell stack module, but also provides a strong guarantee for its long-term stable operation.

[0015] 3. This utility model, by providing a first bracket and a second bracket on the front and rear sides and the left and right sides of the assembly base respectively, wherein the first bracket has two sets of first mounting holes horizontally opened on its first plate near the assembly base, and the second bracket has two sets of second mounting holes horizontally opened on its second plate near the assembly base, can be easily connected and fixed to other components of the fuel cell stack module. Simultaneously, the two sets of first insertion holes and the two sets of second insertion holes on the side of the first and second brackets match the outer surface structure of the horizontally arranged assembly rod on the assembly base. This design makes the first bracket… The first and second brackets can be quickly and securely connected to the assembly base, further enhancing the stability and reliability of the entire positioning structure. In addition, the first and second support blocks provide additional support points for the first and second brackets, enhancing their load-bearing capacity. The first and second reinforcing corner plates further improve the structural strength of the first and second brackets, enabling them to better withstand various forces and vibrations generated by the fuel cell stack module during operation. This design not only improves the assembly efficiency of the fuel cell stack module but also provides a more reliable guarantee for its long-term stable operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main body axis of the rapid assembly and positioning structure of a fuel cell stack module according to the present invention. Figure 2 This is an exploded view of the main body of a rapid assembly and positioning structure for a fuel cell stack module according to the present invention. Figure 3 This is a three-dimensional structural diagram of the positioning seat of a rapid assembly and positioning structure for a fuel cell stack module according to the present invention. Figure 4 This is a three-dimensional structural diagram of the support frame for a rapid assembly and positioning structure of a fuel cell stack module according to the present invention. Figure 5 This is a three-dimensional structural diagram of a combination seat for a rapid assembly and positioning structure of a fuel cell stack module according to the present invention. Figure 6 This is a three-dimensional structural diagram of the first bracket of the rapid assembly and positioning structure for a fuel cell stack module according to the present invention. Figure 7 This is a three-dimensional structural diagram of the second bracket of a rapid assembly and positioning structure for a fuel cell stack module according to the present invention.

[0017] In the diagram: 1. Positioning seat; 101. Base; 102. Fixing hole; 103. Limiting corner block; 104. Limiting stake; 2. Support frame; 201. Main frame body; 202. Docking hole; 203. Limiting insertion hole; 204. Supporting corner plate; 205. Docking block; 3. Combination seat; 301. Main seat body; 302. Combination hole; 303. Combination insertion rod; 4. First bracket; 401. First frame plate; 402. First assembly hole; 403. First insertion hole; 404. First support block; 405. First reinforcing corner plate; 5. Second bracket; 501. Second frame plate; 502. Second assembly hole; 503. Second insertion hole; 504. Second support block; 505. Second reinforcing corner plate. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0019] like Figures 1 to 7As shown in the figure, a rapid assembly and positioning structure for a fuel cell stack module comprises a positioning seat 1 and a support frame 2. The support frame 2 is mounted on the top of the positioning seat 1, a combination seat 3 is connected and mounted on the top of the support frame 2, first brackets 4 are connected and mounted on both the front and rear sides of the combination seat 3, and second brackets 5 are connected and mounted on both the left and right sides of the combination seat 3. The support frame 2 comprises a main frame body 201, docking holes 202, limiting insertion holes 203, supporting angle plates 204 and docking blocks 205, the docking holes 202 are vertically symmetrically opened at front and rear on both the left and right ends of the main frame body 201, the limiting insertion holes 203 are vertically opened in the middle of both the left and right ends of the main frame body 201, the supporting angle plates 204 are symmetrically arranged at left and right on both the front and rear ends of the upper bottom of the main frame body 201, and the docking blocks 205 are arranged in the middle of the front and rear of the upper bottom of the main frame body 201. The positioning seat 1 comprises a base 101, fixing holes 102, limiting angle blocks 103 and limiting insertion piles 104, the fixing holes 102 are vertically opened at four diagonal positions near the middle of the base 101, two groups of limiting angle blocks 103 are respectively arranged on the left and right at the position near the middle of the top surface of the base 101, and the limiting insertion piles 104 are vertically symmetrically arranged at left and right on both ends of the top of the base 101. The base 101, the limiting angle blocks 103 and the limiting insertion piles 104 are arranged in an integrated structure, and hole structures matching the position and structure of the docking holes 202 are opened at both ends of the base 101 for connecting and combining the positioning seat 1 and the support frame 2. The inner surface structure of the limiting insertion holes 203 matches the outer surface structure of the limiting insertion piles 104. The base 101, the limiting angle blocks 103 and the limiting insertion piles 104 are arranged in an integrated structure. Through the fixing holes 102 arranged on the base 101, fasteners such as bolts can be used to stably fix the positioning seat 1 on a required working platform, ensuring the stability of the entire rapid assembly and positioning structure during use and avoiding shaking or displacement caused by external factors. The design of the limiting angle blocks 103 and the limiting insertion piles 104 can achieve accurate guiding and limiting effects when the positioning seat 1 and the support frame 2 are assembled. The limiting angle blocks 103 can prevent the support frame 2 from shifting in the horizontal direction, ensuring that the support frame 2 is accurately placed at the designated position of the positioning seat 1. When the limiting insertion piles 104 are inserted into the limiting insertion holes 203 of the main frame body 201, stable connection between the positioning seat 1 and the support frame 2 in the vertical direction is realized, and vertical looseness between the two is avoided. This double limiting design greatly improves the accuracy and stability during the assembly process, reduces the problem of performance degradation of the fuel cell stack module that may be caused by assembly errors, and meanwhile provides convenience for subsequent maintenance and repair work. When components need to be disassembled or replaced, operation can be performed quickly and accurately. The main frame body 201 of the support frame 2 is in a "Ω"-shaped structure. This unique shape not only provides a stable and reliable supporting foundation for the combination seat 3, but also enables the entire structure to disperse force more uniformly when stressed, and enhances the overall bearing capacity.The abutting holes 202 and the abutting blocks 205 arranged on the main frame body 201 can further ensure the tightness and stability of the connection when connecting with the positioning base 1 and other components.

[0020] As Figures 1 to 7 shown, the combination base 3 comprises a main base body 301, combination holes 302 and combination inserting rods 303. The combination holes 302 are vertically opened at four opposite corners of the main base body 301, and two sets of the combination inserting rods 303 are horizontally arranged on four side edges of the main base body 301. The bottom of the main base body 301 is mounted at the middle of the top of the main frame body 201 by adopting an embedded structure, the main frame body 201 is arranged in a n-shaped structure, hole structures structurally matched with the combination holes 302 are vertically opened at four opposite corners of the top of the main frame body 201, the combination base 3 is tightly connected with the middle of the top of the main frame body 201 through the embedded structure at the bottom thereof, and the hole structures structurally matched with the combination holes 302 opened at four opposite corners of the top of the main frame body 201 enable the combination base 3 and the supporting frame 2 to realize accurate positioning and stable connection in the vertical direction.

[0021] As Figures 1 to 7As shown, the first bracket 4 includes a first frame plate 401, first mounting holes 402, first insertion holes 403, a first support block 404, and a first reinforcing angle plate 405. Two sets of first mounting holes 402 are horizontally formed on the side of the first frame plate 401 near the assembly base 3, and four sets of first insertion holes 403 are vertically formed in an equidistant array on the top of the first frame plate 401. A first support block 404 is located in the middle of the bottom section of the first frame plate 401 near the assembly base 3, and first reinforcing angle plates 405 are provided on both the left and right sides of the first support block 404. The first frame plate 401, the first support block 404, and the first reinforcing angle plate 405 are integrally formed. The second bracket 5 includes a second bracket plate 501, second mounting holes 502, second insertion holes 503, a second support block 504, and a second reinforcing angle plate 505. Two sets of second mounting holes 502 are horizontally formed on the side of the second bracket plate 501 near the assembly base 3, and four sets of second insertion holes 503 are vertically formed in an equidistant array on the top of the second bracket plate 501. A second support block 504 is located in the middle of the bottom section of the second bracket plate 501 near the assembly base 3, and second reinforcing angle plates 505 are provided on both sides of the second support block 504. The second bracket plate 501, the second support block 504, and the second reinforcing angle plate 505 are integrally formed. The first insertion hole 4... The first support block 404 and the second insertion hole 503 have the same structure and both match the outer surface structure of the combined insertion rod 303. Four sets of holes for assembly are provided at the connection points between the first support block 404 and the front and rear sides of the main frame 201. Similarly, four sets of holes for assembly are provided at the connection points between the second support block 504 and the left and right sides of the main frame 201 and the connecting block 205. The combined insertion rod 303 on the combined base 3 matches the first insertion hole 403 and the second insertion hole 503 on the first bracket 4 and the second bracket 5. During assembly, simply inserting the combined insertion rod 303 into the corresponding insertion hole quickly completes the connection between the bracket and the combined base 3. This design not only... This improves assembly efficiency and ensures the connection strength between components. The first bracket 4 and the second bracket 5 can be easily connected and fixed to other components of the fuel cell stack module through the first mounting hole 402 and the second mounting hole 502. At the same time, the first support block 404 and the second support block 504 provide additional support points for the bracket, enhancing its load-bearing capacity. The first reinforcing corner plate 405 and the second reinforcing corner plate 505 further improve the structural strength of the bracket, enabling it to better withstand various forces and vibrations generated by the fuel cell stack module during operation, ensuring the stability and reliability of the entire rapid assembly positioning structure during long-term use.

[0022] In summary, such as Figures 1 to 7As shown, the quick assembly and positioning structure of the fuel cell stack module is used by first fixing the positioning seat 1 to the required working platform through the fixing hole 102 on the base 101 and using fasteners such as bolts to ensure that it will not shake or shift due to external factors during use. Next, align the main frame 201 of the support frame 2 with the hole structure on the positioning seat 1, so that the limiting pin 104 is inserted into the limiting insertion hole 203 of the main frame 201. At the same time, the limiting corner block 103 plays a guiding and limiting role in the horizontal direction, ensuring that the support frame 2 is accurately placed in the designated position of the positioning seat 1. With the combined use of the docking hole 202 and bolts and other structures, the positioning seat 1 and the support frame 2 are accurately docked and firmly fixed in the horizontal and vertical directions. Then, the combination seat 3 is installed in the middle of the top of the main frame 201 through its bottom embedded structure, and the combination seat 3 and the support frame 2 are precisely positioned and stably connected in the vertical direction by using the holes that match the structure of the combination hole 302 opened at the four opposite corners of the top of the main frame 201. Subsequently, the first bracket 4 and the second bracket 5 are placed on the front and rear sides and the left and right sides of the combination base 3, respectively, so that the combination plug 303 on the combination base 3 is inserted into the first plug hole 403 and the second plug hole 503 on the first bracket 4 and the second bracket 5, thus completing the quick connection between the bracket and the combination base 3. Meanwhile, by utilizing the first mounting hole 402 on the first bracket 4 and the second mounting hole 502 on the second bracket 5, it is possible to easily connect and fix with other components at the bottom of the fuel cell stack module, thereby enabling multiple fuel cell stack modules to be spliced ​​and combined with each other at the four opposite corners at the bottom, thus constructing a larger-scale fuel cell stack system to meet the power output requirements in different scenarios. During assembly, the first support block 404 and the second support block 504 provide additional support points for the bracket, enhancing its load-bearing capacity. The first reinforcing corner plate 405 and the second reinforcing corner plate 505 further improve the structural strength of the bracket, enabling it to better withstand various forces and vibrations generated by the fuel cell stack module during operation. Ultimately, through this rapid assembly positioning structure, the assembly of the fuel cell stack module can be completed efficiently, stably, and reliably, providing strong support for the large-scale production and application of fuel cell stack modules.

[0023] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A rapid assembly and positioning structure for a fuel cell stack module, comprising a positioning base (1) and a support frame (2), characterized in that: A support frame (2) is installed on the top of the positioning seat (1), a combination seat (3) is connected and installed on the top of the support frame (2), first brackets (4) are connected and installed on both the front and rear sides of the combination seat (3), and second brackets (5) are connected and installed on both the left and right sides of the combination seat (3). The support frame (2) comprises a main frame body (201), butt joint holes (202), limiting insertion holes (203), supporting angle plates (204) and butt joint blocks (205), the butt joint holes (202) are vertically formed symmetrically front and back at both the left and right ends of the main frame body (201), the limiting insertion holes (203) are vertically formed in the middle of both the left and right ends of the main frame body (201), the supporting angle plates (204) are symmetrically arranged left and right at the front and rear ends of the upper bottom of the main frame body (201), and the butt joint blocks (205) are arranged in the middle of the front and rear of the upper bottom of the main frame body (201).

2. The rapid assembly and positioning structure for a fuel cell stack module according to claim 1, characterized in that, The positioning seat (1) comprises a base (101), fixing holes (102), limiting angle blocks (103) and limiting insertion piles (104), the fixing holes (102) are vertically formed at four diagonal positions near the middle of the base (101), two groups of the limiting angle blocks (103) are respectively arranged on the left and right at the position near the middle of the top surface of the base (101), and the limiting insertion piles (104) are vertically arranged symmetrically left and right at both ends of the top of the base (101).

3. The rapid assembly and positioning structure for a fuel cell stack module according to claim 2, characterized in that, The base (101), the limiting angle blocks (103) and the limiting insertion piles (104) are arranged in an integrated structure, hole structures matched with the butt joint holes (202) in position and structure are formed at both ends of the base (101) for connecting and assembling the positioning seat (1) and the support frame (2), the inner surface structure of the limiting insertion holes (203) is matched with the outer surface structure of the limiting insertion piles (104), and the base (101), the limiting angle blocks (103) and the limiting insertion piles (104) are arranged in an integrated structure.

4. The rapid assembly and positioning structure for a fuel cell stack module according to claim 1, characterized in that, The combination seat (3) comprises a main seat body (301), combination holes (302) and combination insertion rods (303), the combination holes (302) are vertically formed at four diagonal positions of the main seat body (301), and two groups of the combination insertion rods (303) are horizontally arranged on four side edges of the main seat body (301).

5. The rapid assembly and positioning structure for a fuel cell stack module according to claim 4, characterized in that, The bottom of the main seat body (301) is installed in the middle of the top of the main frame body (201) through an embedded structure, the main frame body (201) is arranged in a -shaped structure, and hole structures matched with the combination holes (302) in structure are vertically formed at four diagonal positions of the top of the main frame body (201).

6. The rapid assembly and positioning structure for a fuel cell stack module according to claim 1, characterized in that, The first bracket (4) includes a first frame plate (401), a first mounting hole (402), a first insertion hole (403), a first support block (404), and a first reinforcing corner plate (405). The first frame plate (401) has two sets of first mounting holes (402) horizontally opened on one side near the assembly base (3), and four sets of first insertion holes (403) are vertically arranged in an equidistant array on the top of the first frame plate (401). The first support block (404) is provided in the middle of the bottom section of the first frame plate (401) near the assembly base (3), and the first reinforcing corner plate (405) is provided on both the left and right sides of the first support block (404). The first frame plate (401), the first support block (404), and the first reinforcing corner plate (405) are integrated into one structure.

7. The rapid assembly and positioning structure for a fuel cell stack module according to claim 6, characterized in that, The second bracket (5) includes a second frame plate (501), a second mounting hole (502), a second insertion hole (503), a second support block (504), and a second reinforcing corner plate (505). The second frame plate (501) has two sets of second mounting holes (502) horizontally opened on one side near the assembly base (3), and four sets of second insertion holes (503) are vertically arranged in an equidistant array on the top of the second frame plate (501). The second support block (504) is provided in the middle of the bottom section of the second frame plate (501) near the assembly base (3), and the second reinforcing corner plate (505) is provided on both the left and right sides of the second support block (504). The second frame plate (501), the second support block (504), and the second reinforcing corner plate (505) are integrated into one structure.

8. The rapid assembly and positioning structure for a fuel cell stack module according to claim 7, characterized in that, The first insertion hole (403) and the second insertion hole (503) have the same structure and are matched with the outer surface structure of the combined insertion rod (303). The first support block (404) and the front and rear sides of the main frame (201) are provided with four sets of holes for assembly. The second support block (504) and the connection with the left and right sides of the main frame (201) and the docking block (205) are also provided with four sets of holes for assembly.

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