Synchronous expansion control cabinet

Abstract

The invention discloses a synchronous expansion control cabinet which comprises an outer frame, a component limiting assembly and a heat dissipation assembly are installed on the inner side of the outer frame, the component limiting assembly comprises an inner substrate installed on the inner side of the outer frame, and one side of the inner substrate is provided with an integrated mechanism, a component positioning and clamping part and a wire bunching part. A total integrated circuit is arranged at the position, close to the bottom, of the inner side of the outer frame, the heat dissipation assembly comprises a driving part arranged at the top end of the inner side of the outer frame, the output end of the driving part is connected with an airflow dredging part and a positioning part, and the positioning part moves in a clamping part in a lifting mode. And the positioning plug connector is inserted in the clamping part front and back. Therefore, through a positioning-heat dissipation linkage mechanism and a modular integrated design, the problems that a traditional control cabinet is low in installation precision, low in heat dissipation efficiency, disordered in circuit and unstable in extension are solved, and the control cabinet is suitable for high-density and high-reliability requirement scenes of an industrial control system.

Description

Technical Field

[0001] This application relates to the technical field of control cabinets, and more particularly to a synchronous expansion control cabinet. Background Technology

[0002] With the rapid development of electrical automation technology, synchronous expansion control cabinets, as the core carrier of integrated electrical equipment in industrial control systems, need to meet multiple requirements such as high-density component installation, efficient heat dissipation, and convenient maintenance. Traditional control cabinets typically adopt a fixed frame structure, using simple limit plates or slots to install and position components, but they have the following prominent problems: Firstly, the component installation and positioning accuracy is insufficient. Existing control cabinets mostly use integrated rigid structures for component mounting, making it difficult to adjust the positioning spacing according to different specifications or quantities of components during expansion, easily leading to installation misalignment. Furthermore, the lack of a quick-connect limit connection design with external expansion components makes it prone to misalignment when adding new modules, affecting the reliability of the overall electrical connection. Especially when multiple functional modules need to be expanded simultaneously, traditional mounting systems cannot achieve precise positioning and linkage constraints, resulting in low expansion efficiency.

[0003] Secondly, heat dissipation efficiency and controllability are limited. Traditional control cabinets mostly rely on passive heat dissipation (such as ventilation holes and direct fan blowing), without optimizing airflow paths for the internal heat field distribution. When components operate under high load, heat easily accumulates locally, while the airflow guides of active cooling devices are often fixed structures, unable to dynamically adjust the flow range according to the heat-generating areas, leading to wasted heat dissipation resources or localized overheating. Existing heat dissipation components struggle to achieve intelligent adjustment of airflow paths and cannot form a coordinated heat dissipation mechanism with the component layout.

[0004] Third, the wiring management is chaotic, making maintenance difficult. Existing control cabinets often use simple cable trays for wiring, lacking a layered and organized design between the overall integrated wiring and the branch wiring of individual components. When expanding capacity, new wiring easily becomes entangled with existing wiring, requiring disassembly of each component for troubleshooting or replacement, which is time-consuming and labor-intensive. Furthermore, there is no linkage constraint between the wiring interfaces and component positioning parts, making it easy to pull on the wiring during insertion and removal, leading to poor contact or damage to the insulation layer. The lack of a standardized interface mechanism between the integrated circuit board and components increases the complexity of system debugging.

[0005] Fourth, there is a conflict between expandable functionality and structural stability. Traditional control cabinets typically employ modular designs to achieve expandability, but the connections between modules are mostly secured with bolts or slots, lacking both positioning and locking mechanisms. Vibration during equipment operation can easily cause modules to loosen, affecting system stability. In particular, the lack of reliable limiting connection structures between positioning components and connectors makes them prone to displacement deviations under long-term vibration conditions. Summary of the Invention

[0006] This application aims to at least partially address one of the technical problems in the related art.

[0007] Therefore, the purpose of this application is to propose a synchronous expansion control cabinet, which solves the problems of low installation accuracy, inefficient heat dissipation, messy wiring and unstable expansion of traditional control cabinets through a "positioning-heat dissipation linkage mechanism" and "modular integrated design", and is suitable for high-density and high-reliability requirements of industrial control systems.

[0008] To achieve the above objectives, this application proposes a synchronous expansion control cabinet, including an outer frame, on the inner side of which a component limiting assembly and a heat dissipation assembly are installed; The component limiting assembly includes an inner substrate installed inside the outer frame. One side of the inner substrate is provided with an integration mechanism, a component positioning and mounting part and a wire harness part. The inner side of the outer frame near the bottom is provided with a total integrated circuit. The heat dissipation assembly includes a drive component disposed at the top inner side of the outer frame. The output end of the drive component is connected to an airflow unblocking component and a positioning component. The positioning component moves up and down within the mounting portion. It also includes a positioning connector, which is inserted into the mounting part from the front and back, and the positioning connector is limited to the positioning connector.

[0009] In addition, the synchronous expansion control cabinet proposed in the above application may also have the following additional technical features: Specifically, the positioning element includes a fixing plate disposed at the output of the driving component, and the fixing plate is provided with pins arranged in a linear array on the side near the airflow unblocking component.

[0010] Specifically, the airflow unblocking component includes an airflow unblocking pipe disposed in the outer frame, and a sealing mechanism connected to the output end of the drive component is provided on one side of the airflow unblocking pipe.

[0011] Specifically, the sealing mechanism includes an inner shell disposed inside the airflow dredging pipe, a vent hole is opened on one side of the inner shell, and an upper sealing part, a guide part and a lower sealing part are movably disposed inside the inner shell, the upper sealing part, the guide part and the lower sealing part are connected in sequence from top to bottom.

[0012] Specifically, the guide portion includes an inner partition, a connecting post, and an air hole; The inner partition is connected to the upper sealing part; The two ends of the connecting column are respectively connected to the inner partition and the lower sealing part.

[0013] Specifically, the integrated mechanism includes an outer shell, an integrated circuit board is provided on the inner side of the outer shell, and multiple sets of circuit connectors are linearly arranged on the integrated circuit board.

[0014] Specifically, the component positioning and mounting part includes an outer positioning shell installed inside the outer frame, and an inner positioning part is provided on the inner side of the outer positioning shell.

[0015] Specifically, the inner positioning part includes an inner positioning shell disposed inside the outer positioning shell, and a limiting groove is provided on one side of the inner positioning shell.

[0016] Specifically, the positioning connector includes a positioning block that is movably inserted into the inner side of the outer positioning shell. One side of the positioning block is provided with a protrusion that is inserted into the limiting groove. The same side of the positioning block as the protrusion is provided with a positioning hole. The side of the positioning block away from the outer positioning shell is provided with a screw rod.

[0017] Specifically, a vent pipe is connected between the airflow dredging pipe and the inner substrate, and a vent pipe is connected between two adjacent sets of the inner substrates.

[0018] Compared with the prior art, the synchronous expansion control cabinet of this application has the following advantages: 1. Through the triple limiting of "lateral limiting groove + longitudinal pin + screw locking", the expansion module and the control cabinet body are stably connected, avoiding loosening caused by vibration during equipment operation; 2. During the stable installation of equipment components, the airflow is controlled simultaneously to direct the heat dissipation airflow to areas with dense components, such as under integrated mechanisms or expansion modules, to remove heat and improve the uniformity of the thermal field. 3. Constrain the installation position of components and plan the route of the circuit to avoid the new circuit from getting tangled with the original circuit; the integrated circuit 205 is isolated from the heat dissipation airflow through layered vent pipes to prevent heat from affecting the insulation performance of the circuit.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of the integrated mechanism structure of this application; Figure 3 This is a schematic diagram of the heat dissipation component structure of this application; Figure 4 This is a schematic diagram of the sealing mechanism structure in this application; Figure 5 This is a schematic diagram of the guide section structure of this application; Figure 6 This is a schematic diagram of the component mounting structure of this application; Figure 7 This is a schematic diagram of the positioning connector structure in this application; Figure 8 This is a schematic diagram of the internal positioning part structure of this application.

[0021] As shown in the figure: 10. Outer frame; 20. Component limiting assembly; 201. Inner substrate; 202. Integration mechanism; 2021. Outer protective shell; 2022. Integrated circuit board; 2023. Circuit connector; 203. Component positioning and mounting part; 2031. Outer positioning shell; 2032. Inner positioning part; 20321. Inner positioning shell; 20322. Limiting groove; 204. Wiring part; 205. Overall integrated circuit; 30. Heat dissipation assembly; 301. Drive component; 302. Airflow unblocking component; 3 021. Airflow unblocking pipe; 3022. Sealing mechanism; 30221. Inner shell; 30222. Vent hole; 30223. Upper sealing part; 30224. Guide part; 302241. Inner partition; 302242. Connecting column; 302243. Air hole; 30225. Lower sealing part; 303. Positioning component; 3031. Fixing plate; 3032. Pin; 40. Positioning connector; 401. Positioning block; 402. Protrusion; 403. Positioning hole; 404. Screw rod. Detailed Implementation

[0022] Embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. Rather, embodiments of this application include all variations, modifications, and equivalents falling within the appended spirit and connotation.

[0023] In existing technologies, synchronous expansion control cabinets, as the core carrier of industrial control systems, have long faced problems such as insufficient component installation accuracy, limited heat dissipation efficiency, chaotic wiring management, and poor expansion stability. Traditional control cabinets adopt a fixed frame structure, whose rigid mounting parts are difficult to adapt to the expansion needs of components of different specifications. Passive cooling methods cannot dynamically adjust airflow paths, the lack of layered and orderly design in the wiring section leads to maintenance difficulties, and the modular expansion structure is at risk of vibration and loosening.

[0024] To address these issues, the researchers first considered how to construct an adjustable positioning structure to address component misalignment; explored the possibility of dynamic airflow guidance to address insufficient heat dissipation efficiency; studied layered integration solutions to address circuit entanglement; and designed a dual-limiting connection method to ensure extended stability. By analyzing the thermal field distribution, they proposed a concept that links the heat dissipation mechanism with the positioning mechanism, while also spatially associating circuit integration with component positioning.

[0025] like Figure 1-8 As shown, an embodiment of this application discloses a synchronous expansion control cabinet, including an outer frame 10, with a component limiting assembly 20 and a heat dissipation assembly 30 mounted inside the outer frame 10. The component limiting assembly 20 includes an inner substrate 201 mounted inside the outer frame 10. One side of the inner substrate 201 is respectively provided with an integration mechanism 202, a component positioning and mounting part 203, and a wire harness part 204. A main integrated circuit 205 is provided near the bottom inside the outer frame 10. The heat dissipation assembly 30 includes a driving component 301 disposed at the top of the inner side of the outer frame 10. The output end of the driving component 301 is connected to an airflow dredging component 302 and a positioning component 303. The positioning component 303 moves vertically within the component positioning and mounting part 203.

[0026] It should be noted that the outer frame 10 in this application is a supporting frame for the main structure of the control cabinet, which can be achieved by welding metal profiles or assembling with bolts, providing an installation reference for internal components. The component limiting assembly 20 refers to a device that constrains the spatial position of components, and the functional modules are integrated through the partitioned design of the inner base plate 201. The heat dissipation assembly 30 refers to the heat management system inside the control cabinet, which drives the airflow unblocking component 302 and the positioning component 303 to work together to achieve linkage control of heat dissipation and positioning through the drive component 301.

[0027] It also includes a positioning connector 40, which is inserted into the component positioning and mounting part 203 from the front and back, and the positioning part 303 is limited to the positioning connector 40.

[0028] Among them, the positioning connector 40 refers to the connecting part of the expansion module, which cooperates with the mounting part through front and rear plugging to ensure positioning accuracy during the expansion process.

[0029] In one embodiment of this application, such as Figure 1 and Figure 3 As shown, the positioning member 303 includes a fixing plate 3031 disposed at the output of the driving member 301, and the fixing plate 3031 is provided with pins 3032 in a linear array on the side near the airflow unblocking member 302.

[0030] It should be noted that the fixing plate 3031 refers to the plate-shaped structure used to support the pin 3032. Specifically, it can be made by stamping metal sheet. The fixing plate 3031 is connected to the output end of the drive component 301 and can transmit the power of the drive component 301 to the pin 3032.

[0031] Among them, the pin 3032 refers to the columnar component used for limiting connection, which can be implemented by a cylindrical metal rod. The pins 3032 are linearly arrayed on the fixed plate and form mechanical constraints by being inserted into the positioning holes 403 of the positioning connector 40.

[0032] In one embodiment of this application, such as Figure 1 and Figure 3 As shown, the airflow unblocking component 302 includes an airflow unblocking pipe 3021 disposed in the outer frame 10, and a sealing mechanism 3022 connected to the output end of the drive component 301 is provided on one side of the airflow unblocking pipe 3021.

[0033] It should be noted that the airflow duct 3021 refers to a channel structure used to guide airflow, which can be implemented using a tubular structure made of metal or plastic. Its function is to provide a directional flow path for the heat dissipation airflow. The blocking mechanism 3022 refers to a device that adjusts the opening and closing of the airflow channel through mechanical movement. It can be implemented using layered movable components and is used to dynamically adjust the airflow coverage area according to heat dissipation requirements.

[0034] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, the sealing mechanism 3022 includes an inner shell 30221 disposed inside the airflow dredging pipe 3021. A vent 30222 is opened on one side of the inner shell 30221. An upper sealing part 30223, a guide part 30224 and a lower sealing part 30225 are movably disposed inside the inner shell 30221. The upper sealing part 30223, the guide part 30224 and the lower sealing part 30225 are connected sequentially from top to bottom.

[0035] It should be noted that in this embodiment, the inner shell 30221 refers to the shell structure installed inside the airflow duct 3021, which can be made of metal stamping and serves to provide a moving track and support base for the sealing components. The vent 30222 is opened on one side of the inner shell 30221 to connect the inner and outer spaces of the airflow duct 3021, and can be made of an array of circular or strip-shaped holes to form an airflow exchange channel. The upper sealing part 30223 refers to the movable baffle set at the top of the inner shell 30221, which can be made of a composite structure of a rubber sealing gasket and a metal plate, used to close or open the upper area of ​​the vent 30222. The guide part 30224 refers to the intermediate structure connecting the upper sealing part 30223 and the lower sealing part 30225, which can be made of a combination of a connecting column 302242 with vents 302243 and an inner partition 302241, used to maintain synchronous movement of the upper and lower sealing parts and form an auxiliary airflow channel. The lower sealing part 30225 refers to the movable baffle set at the bottom of the inner shell 30221. Specifically, it can be implemented with a structure symmetrical to the upper sealing part 30223, and is used to close or open the lower area of ​​the vent 30222.

[0036] In one embodiment of this application, such as Figure 5 As shown, the guide section 30224 includes an inner partition 302241, a connecting post 302242, and an air hole 302243.

[0037] The inner partition 302241 is connected to the upper sealing part 30223, and the two ends of the connecting column 302242 are respectively connected to the inner partition 302241 and the lower sealing part 30225.

[0038] It should be noted that the inner baffle 302241 refers to the plate-like structure installed inside the sealing mechanism 3022 to separate airflow channels. It can be made of metal or high-temperature resistant plastic sheeting, forming multiple airflow paths through lateral partitioning to optimize the heat field distribution. The connecting column 302242 refers to the support structure connecting the inner baffle 302241 and the lower sealing part 30225. It can be implemented using a cylindrical metal rod, used to maintain the relative position between the inner baffle 302241 and the lower sealing part 30225 and to transmit driving force.

[0039] Among them, the vent 302243 refers to the through hole opened on the surface of the inner partition 302241, which can be realized by a circular or rectangular hole array. The airflow can be controlled by adjusting the hole diameter and distribution density to achieve dynamic heat dissipation regulation.

[0040] In one embodiment of this application, such as Figure 2 As shown, the integrated mechanism 202 includes an outer housing 2021, an integrated circuit board 2022 is provided inside the outer housing 2021, and multiple sets of line connectors 2023 are linearly arranged on the integrated circuit board 2022.

[0041] It should be noted that the outer casing 2021 refers to the housing structure located outside the integrated circuit board 2022, which can be made of metal or engineering plastic, and is used to protect the internal circuitry from external environmental interference or physical damage. The integrated circuit board 2022 refers to the plate-like structure that carries electrical connections, which can be implemented using a printed circuit board, and is used to centrally arrange the conductive lines required for control signal transmission. The line connector 2023 refers to the interface component that connects to external lines, which can be implemented using plug-in terminals or snap-fit ​​connectors, and is used to achieve quick plugging and unplugging and secure cables.

[0042] In one embodiment of this application, such as Figure 1 and Figure 8 As shown, the component positioning and mounting part 203 includes an outer positioning shell 2031 installed inside the outer frame 10, and an inner positioning part 2032 is provided on the inner side of the outer positioning shell 2031.

[0043] It should be noted that the outer positioning shell 2031 refers to the shell structure fixed inside the control cabinet frame, which can be made of metal stamping or engineering plastic injection molding. Its function is to provide basic support for the internal positioning structure and constrain the installation space. The inner positioning part 2032 refers to the secondary positioning structure nested inside the outer positioning shell 2031. Its function is to improve the accuracy and compatibility of component installation through layered positioning design.

[0044] In one embodiment of this application, such as Figure 8 As shown, the inner positioning part 2032 includes an inner positioning shell 20321 disposed inside the outer positioning shell 2031, and a limiting groove 20322 is provided on one side of the inner positioning shell 20321.

[0045] It should be noted that the inner positioning shell 20321 refers to the secondary positioning structure nested inside the outer positioning shell 2031. Specifically, it can be implemented using a shell made of metal or engineering plastic, and is used to provide layered positioning space for components, avoiding insufficient positioning accuracy caused by a single clamping structure. The limiting groove 20322 refers to the groove structure formed on the side wall of the inner positioning shell 20321, and can be implemented using a rectangular or trapezoidal cross-section groove. It is used to form a plug-in fit with the protrusion 402 of the positioning connector 40, and to mechanically limit the lateral displacement of the connector, thereby enhancing the stability of the module connection.

[0046] In one embodiment of this application, such as Figure 7As shown, the positioning connector 40 includes a positioning block 401 that is movably inserted into the inner side of the outer positioning shell 2031. One side of the positioning block 401 is provided with a protrusion 402 that is inserted into the limiting groove 20322. The same side of the positioning block 401 as the protrusion 402 is provided with a positioning hole 403. The side of the positioning block 401 opposite to the outer positioning shell 2031 is provided with a screw rod 404.

[0047] It should be noted that the positioning block 401 is a rigid component that slides and engages with the inner side of the outer positioning shell 2031. It can be made of metal or high-strength plastic, and its cross-sectional shape matches the inner cavity of the outer positioning shell 2031 to achieve smooth movement. The protrusion 402 is a protruding structure extending from the side of the positioning block 401. It can be designed with a trapezoidal or rectangular cross-section and is used to embed into the limiting groove 20322 to form a lateral constraint. The positioning hole 403 is a through hole penetrating the positioning block 401. It can be a circular or square hole structure and is used to form a longitudinal limit with the pin of the external positioning component. The screw rod 404 is a threaded rod fixed to the outside of the positioning block 401. It can be connected by a pre-embedded nut or welding and is used to pass through the mounting hole of the expansion module and be locked by the nut.

[0048] In one embodiment of this application, such as Figure 1 and Figure 3 As shown, an air vent is connected between the airflow duct 3021 and the inner substrate 201, and an air vent is connected between two adjacent sets of inner substrates 201.

[0049] It should be noted that the airflow dredging pipe 3021 refers to a channel structure used to guide airflow. Specifically, it can be implemented using a tubular structure made of metal or plastic, forming a continuous airflow channel inside, which is used to directionally transport heat dissipation airflow to the target area.

[0050] I. Component Expansion and Precise Positioning: When it is necessary to expand or install new functional modules, the positioning connector 40 at the bottom of the expansion module is horizontally inserted into the outer positioning shell 2031 of the component positioning and mounting part 203. The protrusion 402 of the positioning connector 40 first engages with the limiting groove 20322 of the inner positioning part 2032 to form a lateral mechanical constraint, ensuring the horizontal positioning accuracy of the expansion module. Subsequently, the positioning hole 403 of the positioning connector 40 is longitudinally inserted into the pin 3032 of the positioning member 303 at the output end of the heat dissipation assembly 30 drive component 301, and the screw rod 404 of the positioning connector 40 can be locked with the mounting hole of the expansion module by a nut. Through the triple limiting of "lateral limiting groove + longitudinal pin + screw locking", the expansion module and the control cabinet body are stably connected, avoiding loosening caused by vibration during equipment operation.

[0051] II. Dynamic heat dissipation adjustment: When the control cabinet is running, the drive component 301 synchronously drives the airflow unblocking component 302 and the positioning component 303 to move: Positioning component 303: The pins 3032 of the linear array are raised and lowered by the fixing plate 3031, and cooperate with the positioning hole 403 of the positioning connector 40 to further enhance the vertical stability of the expansion module after it is fixed.

[0052] Airflow unblocking component 302: The driving component 301 drives the sealing mechanism 3022 to move within the inner shell 30221, adjusting the opening and closing state of the vent 30222 through the coordinated action of the upper sealing part 30223, the guide part 30224, and the lower sealing part 30225. Specifically: When enhanced local heat dissipation is required, the upper sealing part 30223 and the lower sealing part 30225 move synchronously when driven by the driving component 301, opening the vent 30222. Airflow enters through the airflow channel 3021 and is directionally transported to densely populated areas such as the integrated mechanism 202 or below the expansion module through the vent pipe between the inner substrate 201 and the airflow channel 3021 and the vent pipe between adjacent inner substrates 201, thereby carrying away heat and improving the uniformity of the thermal field.

[0053] III. Line Integration and Management: The outer casing 2021 of the integrated mechanism 202 protects the internal integrated circuit board 2022, and the line connectors 2023 on it connect with the main integrated circuit 205 and the expansion module lines to achieve centralized transmission of signals and power. The inner positioning part 2032 of the component positioning and mounting part 203 and the wire harness part 204 are designed in coordination. The former constrains the installation position of the components, and the latter plans the route of the lines to avoid the new lines from getting tangled with the existing lines. The main integrated circuit 205 is isolated from the heat dissipation airflow through layered vent pipes to prevent heat from affecting the insulation performance of the lines.

[0054] In summary, the synchronous expansion control cabinet of this application solves the problems of low installation accuracy, inefficient heat dissipation, messy wiring and unstable expansion of traditional control cabinets through the "positioning-heat dissipation linkage mechanism" and "modular integrated design", and is suitable for high-density and high-reliability requirements of industrial control systems.

[0055] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A synchronous expansion control cabinet, comprising an outer frame (10), characterized in that, The component limiting assembly (20) and heat dissipation assembly (30) are installed on the inner side of the outer frame (10). The component limiting assembly (20) includes an inner substrate (201) installed inside the outer frame (10). An integration mechanism (202), a component positioning and mounting part (203) and a wire harness part (204) are respectively provided on one side of the inner substrate (201). A total integrated circuit (205) is provided on the inner side of the outer frame (10) near the bottom. The heat dissipation assembly (30) includes a drive component (301) disposed at the top inner side of the outer frame (10). The output end of the drive component (301) is connected to an airflow unblocking component (302) and a positioning component (303). The positioning component (303) moves up and down within the mounting part (203). It also includes a positioning connector (40), which is inserted into the mounting part (203) from the front and back, and the positioning member (303) is limited to the positioning connector (40).

2. The synchronous expansion control cabinet according to claim 1, characterized in that, The positioning member (303) includes a fixing plate (3031) disposed at the output of the driving component (301), and the fixing plate (3031) is provided with pins (3032) in a linear array on the side near the airflow unblocking component (302).

3. The synchronous expansion control cabinet according to claim 1, characterized in that, The airflow unblocking component (302) includes an airflow unblocking pipe (3021) disposed in the outer frame (10), and a sealing mechanism (3022) connected to the output end of the drive component (301) is provided on one side of the airflow unblocking pipe (3021).

4. A synchronous expansion control cabinet according to claim 3, characterized in that, The sealing mechanism (3022) includes an inner shell (30221) disposed inside the airflow dredging pipe (3021). A vent (30222) is opened on one side of the inner shell (30221). An upper sealing part (30223), a guide part (30224) and a lower sealing part (30225) are movably provided inside the inner shell (30221). The upper sealing part (30223), the guide part (30224) and the lower sealing part (30225) are connected in sequence from top to bottom.

5. A synchronous expansion control cabinet according to claim 4, characterized in that, The guide section (30224) includes an inner partition (302241), a connecting post (302242), and an air hole (302243). The inner partition (302241) is connected to the upper sealing part (30223); The two ends of the connecting column (302242) are respectively connected to the inner partition (302241) and the lower sealing part (30225).

6. A synchronous expansion control cabinet according to claim 1, characterized in that, The integrated mechanism (202) includes an outer shell (2021), an integrated circuit board (2022) is provided inside the outer shell (2021), and multiple sets of line connectors (2023) are arranged linearly on the integrated circuit board (2022).

7. A synchronous expansion control cabinet according to claim 1, characterized in that, The component positioning and mounting part (203) includes an outer positioning shell (2031) installed inside the outer frame (10), and an inner positioning part (2032) is provided on the inner side of the outer positioning shell (2031).

8. A synchronous expansion control cabinet according to claim 7, characterized in that, The inner positioning part (2032) includes an inner positioning shell (20321) disposed inside the outer positioning shell (2031), and a limiting groove (20322) is provided on one side of the inner positioning shell (20321).

9. A synchronous expansion control cabinet according to claim 8, characterized in that, The positioning connector (40) includes a positioning block (401) that is movably inserted into the inner side of the outer positioning shell (2031). One side of the positioning block (401) is provided with a protrusion (402) that is inserted into the limiting groove (20322). The same side of the positioning block (401) as the protrusion (402) is provided with a positioning hole (403). The side of the positioning block (401) away from the outer positioning shell (2031) is provided with a screw rod (404).

10. A synchronous expansion control cabinet according to claim 3, characterized in that, A vent pipe is connected between the airflow dredging pipe (3021) and the inner substrate (201), and a vent pipe is connected between two adjacent sets of the inner substrates (201).

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