Top cover positioning device

Abstract

The utility model provides a top cover positioning device, a top cover in the top cover positioning device comprises a cover plate and a pole assembly arranged on the cover plate, the pole assembly is provided with a via hole structure penetrating through the cover plate, the top cover positioning device specifically comprises a support, a positioning assembly and an elastic piece, the positioning assembly comprises a positioning frame and a positioning column, and the elastic piece is arranged on the support. The positioning frame is provided with a positioning groove for containing the cover plate, the first end of the positioning column is arranged in the positioning groove, the second end of the positioning column extends in the height direction of the support, the positioning column penetrates through the via hole structure, and the elastic piece is arranged between the positioning column and the positioning frame. According to the top cover positioning device, the positioning columns are matched with the elastic pieces, accurate positioning of the top cover in the positioning process can be ensured, the positioning efficiency is effectively improved, and the problem that the development of positioning operation is affected due to the fact that the pole column assembly is prone to interfering with the positioning device is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and more specifically, to a top cover positioning device. Background Technology

[0002] During battery manufacturing, the precision of battery component assembly directly affects the overall performance and safety of the battery. The top cover, as a key component, consists of a cover plate, explosion-proof valve, sealing ring, and terminal assembly.

[0003] In the existing battery cell assembly process, after the cover plate is assembled with the terminal assembly, it is transferred to the battery cell by a transfer device, such as a robot. Due to the separate design of the cover plate and the terminal assembly, the cover plate and the terminal assembly need to be relatively positioned before the top cover is transferred to the battery cell for assembly to meet the subsequent assembly requirements.

[0004] When positioning the cover plate and the pole assembly, the existing positioning device is not fully constrained because the pole assembly is still movable relative to the cover plate. This can easily cause the pole assembly to be pushed out of the cover plate during center positioning, resulting in problems with the top cover positioning operation. This requires manual intervention, which affects the production efficiency of the production line and the production quality of the products.

[0005] As can be seen from the above, in the process of assembling battery cells in the existing technology, the terminal assembly is prone to interference with the positioning device, thereby affecting the positioning operation. Utility Model Content

[0006] The main purpose of this utility model is to provide a top cover positioning device to solve the problem that the pole post assembly is prone to interference with the positioning device, thereby affecting the positioning operation.

[0007] To achieve the above objectives, according to one aspect of the present invention, a top cover positioning device is provided. The top cover includes a cover plate and a pole post assembly disposed on the cover plate. The pole post assembly has a through hole structure penetrating the cover plate. The top cover positioning device includes a bracket, a positioning component, and an elastic element. The positioning component includes a positioning frame and a positioning post. The positioning frame has a positioning groove for accommodating the cover plate. The first end of the positioning post is disposed inside the positioning groove, and the second end of the positioning post extends along the height direction of the bracket. The positioning post penetrates the through hole structure. The elastic element is disposed between the positioning post and the positioning frame to provide a driving force for the positioning post to move along the height direction of the bracket.

[0008] Furthermore, the outer periphery of the second end of the positioning post has a chamfer.

[0009] Further, the positioning frame comprises a bottom plate and a protrusion, the bottom plate is a rectangular plate structure, the protrusion is arranged at four corners of the bottom plate, the protrusion has an arc-shaped guide surface facing the center of the bottom plate, and the protrusion and the bottom plate cooperatively form a positioning groove.

[0010] Further, the positioning groove has a channel communicated with the positioning groove and extending along the height direction of the support, the first end of the positioning column is movably arranged in the channel, and the elastic member is arranged between the inner wall surface of the channel and the first end of the positioning column.

[0011] Further, the channel has a first part and a second part coaxial and communicated, the first part is communicated with the positioning groove, the first end of the positioning column is movably arranged in the first part, the elastic member is arranged between the hole bottom surface of the first part and the positioning column, and the hole diameter of the second part is smaller than the diameter of the positioning column.

[0012] Further, the second part has a first hole section, a second hole section and a third hole section coaxial and communicated in sequence, the top cover positioning device further comprises a limiting member, the limiting member is arranged in the channel, the limiting member comprises a connecting arm section and a limiting arm section, the diameter of the limiting arm section is greater than the diameter of the connecting arm section, one end of the connecting arm section is connected with the positioning column, the other end of the connecting arm section penetrates the first hole section and the second hole section and is connected with the limiting arm section, the limiting arm section is arranged in the third hole section, and the diameter of the limiting arm section is greater than the hole diameter of the second hole section.

[0013] Further, the inner wall surface of the second part and the outer peripheral surface of the connecting arm section are slidingly matched along the height direction of the support.

[0014] Further, the top cover positioning device further comprises a dust removal pipeline, the dust removal pipeline is arranged on the support, the support has a hole structure communicated with the channel, and the dust removal pipeline is communicated with the hole structure.

[0015] Further, the support comprises a first mounting plate and a second mounting plate arranged at intervals along the height direction of the support, and a support column arranged between the first mounting plate and the second mounting plate, an installation space is formed between the first mounting plate and the second mounting plate, the positioning assembly is arranged on the side of the first mounting plate away from the second mounting plate, the hole structure is arranged on the first mounting plate, and part of the dust removal pipeline is arranged in the installation space.

[0016] Further, the top cover positioning device further comprises a correction assembly, the correction assembly comprises a driving member and a connecting plate, the driving member is arranged on the support, the driving member is drivingly connected with the connecting plate, the connecting plate has a positioning block, the positioning block is arranged on one side of the positioning column along the length direction of the support, and the driving member provides a driving force for the positioning block to move towards or away from the pole assembly along the length direction of the support.

[0017] Applying the technical solution of this utility model, the top cover of the top cover positioning device includes a cover plate and a pole post assembly disposed on the cover plate. The pole post assembly has a through hole structure penetrating the cover plate. The top cover positioning device specifically includes a bracket, a positioning component, and an elastic element. The positioning component includes a positioning frame and a positioning post. The positioning frame has a positioning groove for accommodating the cover plate. The first end of the positioning post is disposed inside the positioning groove, and the second end of the positioning post extends along the height direction of the bracket. The positioning post penetrates the through hole structure. The elastic element is disposed between the positioning post and the positioning frame to provide driving force for the positioning post to move along the height direction of the bracket.

[0018] As can be seen from the above, the top cover positioning device of this application adopts the cooperation of a positioning post and an elastic element. During the positioning process between the cover plate and the pole post assembly, the elastic element allows the positioning post to have a floating movement. Therefore, when the pole post assembly is placed towards the cover plate and its position deviates, the pole post assembly will press against the positioning post. The positioning post, while moving along its height, guides the pole post assembly for positioning, thus correcting the position of the pole post assembly. The corrected positioning post passes through the through-hole structure, achieving a press-fit between the cover plate and the pole post assembly. The structural design of this application ensures accurate positioning of the top cover during the positioning process, effectively improving positioning efficiency and accuracy. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A three-dimensional structural schematic diagram of one of the top cover positioning devices provided in this application;

[0021] Figure 2 A three-dimensional structural schematic diagram of another of the top cover positioning devices provided in this application;

[0022] Figure 3 A side view of the top cover positioning device provided in this application;

[0023] Figure 4 A three-dimensional structural diagram of the positioning component provided in this application.

[0024] The above figures include the following reference numerals:

[0025] 10. Bracket; 110. First mounting plate; 120. Second mounting plate; 130. Support column; 20. Positioning assembly; 210. Positioning frame; 211. Base plate; 212. Protrusion; 2121. Guide surface; 213. Positioning groove; 214. Channel; 2141. First part; 2142. Second part; 21421. First hole section; 21422. Second hole section; 21423. Third hole section; 220. Positioning column; 221. Chamfer; 30. Dust removal pipe; 40. Correction assembly; 410. Drive component; 420. Connecting plate; 421. Positioning block; 50. Top cover; 510. Cover plate; 520. Pole column assembly; 60. Elastic component; 70. Limiting component; 710. Connecting arm section; 720. Limiting arm section. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] In order to solve the problem that the electrode assembly is prone to interference with the positioning device during the battery cell assembly process in the prior art, thereby affecting the positioning operation, this application provides a top cover positioning device for the positioning operation of the top cover.

[0030] The top cover 50 includes a cover plate 510 and a pole post assembly 520 disposed on the cover plate 510. There are two pole post assemblies 520, which are arranged in pairs. Each pole post assembly 520 has a through hole structure that penetrates the cover plate 510. That is, the pole post assembly 520 has a through hole structure, and the cover plate 510 has an assembly hole that communicates with the through hole structure on the pole post assembly 520.

[0031] like Figures 1 to 4As shown, the top cover positioning device specifically includes a bracket 10, a positioning component 20, and an elastic element 60. The positioning component 20 includes a positioning frame 210 and a positioning post 220. The positioning frame 210 has a positioning groove 213 for accommodating the cover plate 510. The first end of the positioning post 220 is disposed inside the positioning groove 213, and the second end of the positioning post 220 extends along the height direction of the bracket 10. The positioning post 220 passes through the through hole structure. The elastic element 60 is disposed between the positioning post 220 and the positioning frame 210 to provide driving force for the positioning post 220 to move along the height direction of the bracket 10.

[0032] Among them, the elastic element 60 is a spring. Along the height direction of the bracket 10, one end of the elastic element 60 is connected to the positioning post 220, and the other end of the elastic element 60 is connected to the positioning frame 210, so that the spring provides elastic force along the height direction of the bracket 10.

[0033] The second end of the positioning post 220 extends out of the positioning groove 213 along the height direction of the bracket 10. That is, the extension height of the positioning post 220 is greater than the thickness of the positioning groove 213 and the pole post assembly 520 along the height direction of the bracket 10, thereby ensuring that the pole post assembly 520 is limited by the positioning post 220 and will not be displaced.

[0034] The length direction of bracket 10 is Figure 1 As shown in the X direction, the width direction of the bracket 10 is... Figure 1 As shown in the Y direction, the height direction of the bracket 10 is... Figure 1 The Z direction is shown.

[0035] Specifically, the top cover positioning device of this application employs the cooperation of a positioning post 220 and an elastic element 60. During the installation of the cover plate 510 and the pole post assembly 520, the elastic element 60 allows the positioning post 220 to have a floating movement. When the pole post assembly 520 is placed towards the cover plate 510 and its position shifts, the through-hole structure on the pole post assembly 520 becomes misaligned with the positioning post 220. In this case, the pole post assembly 520 presses against the positioning post 220, driving it downwards. Simultaneously, the positioning post 220 guides the installation of the pole post assembly 520, correcting its position. After correction, the positioning post 220 penetrates the through-hole structure, achieving a press-fit between the cover plate 510 and the pole post assembly 520. This structural design ensures precise alignment of the top cover 50 during the positioning process, effectively improving positioning efficiency and accuracy. It also prevents the rigidly positioned positioning post 220 from pushing the pole post assembly 520 off the cover plate 510, thus avoiding positioning errors.

[0036] In this embodiment, two positioning posts 220 are provided, and each positioning post 220 corresponds to one of the pole post assemblies 520. The specific positions of the two positioning posts 220 are adapted to the structural settings of the pole post assembly 520 of the product model.

[0037] like Figure 1 and Figure 2 As shown, the positioning frame 210 includes a base plate 211 and protrusions 212. The base plate 211 has a rectangular plate structure, and the protrusions 212 are located at the four corners of the base plate 211. The protrusions 212 have an arc-shaped guide surface 2121 facing the center of the base plate 211. The protrusions 212 and the base plate 211 cooperate to form a positioning groove 213.

[0038] Specifically, arc-shaped guide surfaces 2121 are formed on the protrusions 212 at the four corners of the base plate 211, and the four guide surfaces 2121 form positioning grooves 213. During the installation of the cover plate 510, the arc-shaped guide surfaces 2121 at the corners play a role in guiding and limiting the cover plate 510, so as to ensure that the cover plate 510 can be stably installed inside the positioning grooves 213.

[0039] It is understood that the positioning groove 213 formed by the four protrusions 212 in this application is a contour positioning groove 213, that is, the positioning groove 213 forms clearance space along the length and width of the bracket 10, and the cover plate 510 is limited only by the position of the four protrusions 212.

[0040] In this embodiment, the bottom surface of the positioning groove 213 has a channel 214 that communicates with the positioning groove 213 and extends along the height direction of the bracket 10. The first end of the positioning post 220 is movably disposed inside the channel 214, and the elastic member 60 is disposed between the inner wall surface of the channel 214 and the first end of the positioning post 220.

[0041] The first end of the positioning post 220 is placed inside the channel 214, and the other end extends to the outside of the positioning groove 213. The positioning post 220 avoids the installation of the cover plate 510, thus avoiding affecting the installation and positioning of the cover plate 510. At the same time, the structure of the channel 214 provides installation space for the positioning post 220, which facilitates the quick installation of the positioning post 220 during the assembly process and helps to improve installation efficiency.

[0042] In this embodiment, in order to further improve the guiding function of the positioning post 220, the outer periphery of the second end of the positioning post 220 has a chamfer 221. By setting the second end of the positioning post 220 to have a chamfer 221, the chamfer 221 enables the pole post assembly 520 to move along the chamfer 221 when it contacts the pole post assembly 520, thereby improving the positioning efficiency between the pole post assembly 520 and the cover plate 510, and avoiding the phenomenon of component damage caused by hard contact.

[0043] like Figure 3As shown, the channel 214 has a first part 2141 and a second part 2142 that are coaxial and connected. The first part 2141 is connected to the positioning groove 213. The first end of the positioning post 220 is movably disposed inside the first part 2141. The elastic member 60 is disposed between the bottom surface of the hole in the first part 2141 and the positioning post 220. The diameter of the hole in the second part 2142 is smaller than the diameter of the positioning post 220, and is used to limit the positioning post 220 along the height direction of the bracket 10.

[0044] The positioning post 220, which is limited by the aperture, can only be set inside the first part 2141. At the same time, the extension distance of the first part 2141 along the height direction of the bracket 10 is less than the extension height of the positioning post 220. Thus, the bottom surface of the hole in the first part 2141 has the function of abutting against the positioning post 220.

[0045] like Figure 3 As shown, the second part 2142 has a first hole segment 21421, a second hole segment 21422, and a third hole segment 21423 that are coaxial and sequentially connected. The top cover positioning device also includes a limiting member 70, which is disposed inside the channel 214. The limiting member 70 includes a connecting arm segment 710 and a limiting arm segment 720. The diameter of the limiting arm segment 720 is larger than the diameter of the connecting arm segment 710. One end of the connecting arm segment 710 is connected to the positioning post 220, and the other end of the connecting arm segment 710 passes through the first hole segment 21421 and the second hole segment 21422 and is connected to the limiting arm segment 720. The limiting arm segment 720 is disposed inside the third hole segment 21423, and the diameter of the limiting arm segment 720 is larger than the diameter of the second hole segment 21422.

[0046] Specifically, the positioning post 220 is fixedly mounted on the positioning frame 210 by the limiting member 70. The positioning post 220 and the limiting member 70 are connected to form a synchronous movement along the height direction of the bracket 10. The first part 2141 limits the downward movement distance of the positioning post 220, and the third hole section 21423 limits the upward movement distance of the limiting arm section 720. The cooperative structure of the positioning post 220 and the limiting member 70 realizes the limitation of the distance that the positioning post 220 moves along the height of the bracket 10, which is conducive to improving the stability of the structure.

[0047] Furthermore, the inner wall surface of the second part 2142 and the outer peripheral surface of the connecting arm section 710 slide in a sliding fit along the height direction of the bracket 10. The second part 2142 limits the connecting arm section 710, thereby ensuring that the positioning post 220 and the limiting member 70 can only move inside the channel 214 along the height direction of the bracket 10. This avoids the phenomenon that the positioning post 220 will shake and interfere with the pole post assembly 520 and the cover plate 510, resulting in the inability to install the cover plate 510 and the pole post assembly 520. The structural design of the channel 214 in this application is conducive to improving installation efficiency.

[0048] In this embodiment, in order to ensure the stability of the installation of the positioning post 220 and the limiting member 70, a threaded connection is used for fixing. That is, one of the positioning post 220 and the limiting member 70 is provided with an internal thread, and the other is provided with an external thread. The positioning post 220 and the limiting member 70 are fixedly connected by the rotation locking of the internal thread and the external thread.

[0049] like Figures 1 to 3 As shown, the top cover positioning device also includes a dust removal pipe 30, which is mounted on the bracket 10. The bracket 10 has a hole structure that communicates with the channel 214, and the dust removal pipe 30 communicates with the hole structure.

[0050] The hole structure is used to connect the dust removal pipe 30 and the channel 214. When multiple positioning components 20 are provided on the bracket 10, multiple channels 214 are formed on the positioning frame 210. The corresponding bracket 10 has multiple hole structures that correspond one-to-one with the channels 214, so as to facilitate the one-to-one correspondence between the dust removal pipe 30 and the channel 214.

[0051] Specifically, the dust removal pipe 30 is connected to the channel 214 to perform dust removal operation in the area aligned with the pole assembly 520. The dust removal pipe 30 is connected to a negative pressure generator, which can be a fan. Under the action of the negative pressure generator, a negative pressure is formed inside the dust removal pipe 30, thereby realizing the dust removal operation.

[0052] In this embodiment, the bracket 10 includes a first mounting plate 110 and a second mounting plate 120 spaced apart along the height direction of the bracket 10, and a support column 130 disposed between the first mounting plate 110 and the second mounting plate 120. An installation space is formed between the first mounting plate 110 and the second mounting plate 120. The positioning component 20 is disposed on the side of the first mounting plate 110 away from the second mounting plate 120. The first mounting plate 110 is provided with a hole structure. A portion of the dust removal pipe 30 is disposed inside the installation space.

[0053] The use of support columns 130 to form an installation space for accommodating the dust removal pipe 30 between the first mounting plate 110 and the second mounting plate 120 improves the mechanical strength of the bracket 10; and the structure of the first mounting plate 110 provides an installation surface for fixing the positioning frame 210, which is beneficial to the stability of the installation of the positioning component 20.

[0054] The support column 130 is provided in multiple ways, and the multiple support columns 130 achieve multiple support positions, thereby ensuring the stability of the installation of the first mounting plate 110 and the second mounting plate 120.

[0055] like Figures 1 to 4As shown, the top cover positioning device also includes a correction component 40, which includes a drive member 410 and a connecting plate 420. The drive member 410 is mounted on the bracket 10 and is drivenly connected to the connecting plate 420. The connecting plate 420 has a positioning block 421. The positioning block 421 is mounted on one side of the positioning post 220 along the length direction of the bracket 10. The drive member 410 provides driving force for the positioning block 421 to move toward or away from the pole post assembly 520 along the length direction of the bracket 10.

[0056] Among them, the driving component 410 is a structural component such as a motor or cylinder. The driving component 410 drives the positioning block 421 to move towards or away from the pole post assembly 520 by driving the positioning block 421 to extend and retract. The positioning block 421 moves towards the pole post assembly 520 through the clearance space on the positioning groove 213.

[0057] Specifically, the drive member 410 is disposed on the side of the first mounting plate 110 of the bracket 10 facing the second mounting plate 120, and the connecting plate 420 has a bent structure. One end of the connecting plate 420 is connected to the drive member 410, and the other end of the mounting plate is bent and disposed at the end of the first mounting plate 110 away from the second mounting plate 120.

[0058] Both pole post assemblies 520 on the top cover have positioning blocks 421 that are aligned. The two positioning blocks 421 are set on the same section of the mounting plate, and then the two positioning blocks 421 are driven to move by a driving component 410. The two positioning blocks 421 move synchronously, which ensures that the two positioning blocks 421 simultaneously correct the two pole post assemblies 520 and improves the positioning efficiency of the cover plate 510 and the pole post assembly 520.

[0059] In this embodiment, the positioning block 421 has the effect of assisting in positioning the pole post assembly 520. When the pole post assembly 520 is installed onto the cover plate 510, the driving member 410 drives the connecting plate 420 to move. The positioning block 421 on the connecting plate 420 abuts against the pole post assembly 520 to limit the pole post assembly 520, ensuring that the pole post assembly 520 is stably set on the cover plate 510, so as to achieve precise positioning and installation of the pole post assembly 520 and the cover plate 510. The setting of the correction component 40 in this application is beneficial to improving the positioning efficiency of the cover plate 510 and the pole post assembly 520.

[0060] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0061] The top cover positioning device of this application employs the cooperation of a positioning post 220 and an elastic element 60. During the installation of the cover plate 510 and the pole post assembly 520, the elastic element 60 allows the positioning post 220 to float and move. When the pole post assembly 520 is placed towards the cover plate 510 and its position shifts, the through-hole structure on the pole post assembly 520 becomes misaligned with the positioning post 220. In this case, the pole post assembly 520 presses against the positioning post 220, driving it downwards. Simultaneously, the positioning post 220 guides the installation of the pole post assembly 520, correcting its position. After correction, the positioning post 220 penetrates the through-hole structure, achieving relative positioning between the cover plate 510 and the pole post assembly 520. This structural design ensures precise positioning of the top cover 50 during assembly, effectively improving positioning efficiency and accuracy.

[0062] This application provides a correction component 40 that assists in positioning the pole post assembly 520. When the pole post assembly 520 is installed onto the cover plate 510, the drive component 410 drives the connecting plate 420 to move. The positioning block 421 on the connecting plate 420 abuts against the pole post assembly 520 to limit its position, ensuring that the pole post assembly 520 is stably positioned on the cover plate 510. This achieves precise positioning and installation of the pole post assembly 520 and the cover plate 510. The correction component 40 in this application helps improve the positioning efficiency of the cover plate 510 and the pole post assembly 520.

[0063] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0066] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A top cover positioning device, characterized in that, The top cover (50) includes a cover plate (510) and a pole post assembly (520) disposed on the cover plate (510), the pole post assembly (520) having a through hole structure penetrating the cover plate (510), and the top cover positioning device includes: Frame (10); The positioning assembly (20) includes a positioning frame (210) and a positioning post (220). The positioning frame (210) is disposed on the bracket (10). The positioning frame (210) has a positioning groove (213) for accommodating the cover plate (510). The first end of the positioning post (220) is disposed inside the positioning groove (213). The second end of the positioning post (220) extends along the height direction of the bracket (10). The positioning post (220) penetrates the through hole structure. An elastic element (60) is disposed between the positioning post (220) and the positioning frame (210) to provide a driving force for the positioning post (220) to move along the height direction of the bracket (10).

2. The top cover positioning device according to claim 1, characterized in that, The outer periphery of the second end of the positioning post (220) has a chamfer (221).

3. The top cover positioning device according to claim 1, characterized in that, The positioning frame (210) includes: The base plate (211) is a rectangular plate structure; A protrusion (212) is provided at the four corners of the base plate (211). The protrusion (212) has an arc-shaped guide surface (2121) facing the center of the base plate (211). The protrusion (212) and the base plate (211) cooperate to form the positioning groove (213).

4. The top cover positioning device according to claim 1, characterized in that, The bottom surface of the positioning groove (213) has a channel (214) that communicates with the positioning groove (213) and extends along the height direction of the bracket (10). The first end of the positioning post (220) is movably disposed inside the channel (214). The elastic member (60) is disposed between the inner wall surface of the channel (214) and the first end of the positioning post (220).

5. The top cover positioning device according to claim 4, characterized in that, The channel (214) has a first part (2141) and a second part (2142) that are coaxial and connected. The first part (2141) is connected to the positioning groove (213). The first end of the positioning post (220) is movably disposed inside the first part (2141). The elastic element (60) is disposed between the bottom surface of the hole in the first part (2141) and the positioning post (220). The diameter of the hole in the second part (2142) is smaller than the diameter of the positioning post (220).

6. The top cover positioning device according to claim 5, characterized in that, The second part (2142) has a first hole segment (21421), a second hole segment (21422), and a third hole segment (21423) that are coaxial and sequentially connected. The top cover positioning device also includes a limiting member (70), which is disposed inside the channel (214). The limiting member (70) includes a connecting arm segment (710) and a limiting arm segment (720). The diameter of the limiting arm segment (720) is larger than that of the connecting arm segment (710). The diameter of the connecting arm segment (710) is greater than that of the positioning post (220). One end of the connecting arm segment (710) is connected to the positioning post (220), and the other end of the connecting arm segment (710) passes through the first hole segment (21421) and the second hole segment (21422) and is connected to the limiting arm segment (720). The limiting arm segment (720) is disposed inside the third hole segment (21423). The diameter of the limiting arm segment (720) is greater than that of the second hole segment (21422).

7. The top cover positioning device according to claim 6, characterized in that, The inner wall surface of the second part (2142) and the outer peripheral surface of the connecting arm section (710) slide in fit along the height direction of the bracket (10).

8. The top cover positioning device according to claim 4, characterized in that, The top cover positioning device also includes: A dust removal pipe (30) is provided on the support (10), and the support (10) has a hole structure that communicates with the channel (214). The dust removal pipe (30) is connected to the hole structure.

9. The top cover positioning device according to claim 8, characterized in that, The bracket (10) includes a first mounting plate (110) and a second mounting plate (120) spaced apart along the height direction of the bracket (10), and a support column (130) disposed between the first mounting plate (110) and the second mounting plate (120). An installation space is formed between the first mounting plate (110) and the second mounting plate (120). The positioning component (20) is disposed on the side of the first mounting plate (110) away from the second mounting plate (120). The first mounting plate (110) is provided with the hole structure. A portion of the dust removal pipe (30) is disposed inside the installation space.

10. The top cover positioning device according to any one of claims 1 to 9, characterized in that, The top cover positioning device further includes a correction component (40), the correction component (40) comprising: A driving element (410) is disposed on the bracket (10); A connecting plate (420) is provided, and the driving member (410) is drivingly connected to the connecting plate (420). The connecting plate (420) has a positioning block (421). The positioning block (421) is disposed on one side of the positioning post (220) along the length direction of the bracket (10). The driving member (410) provides driving force for the positioning block (421) to move toward or away from the pole post assembly (520) along the length direction of the bracket (10).

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