A multifunctional protection device for a ship's main distribution board

Abstract

The application provides a multifunctional protection device of a ship main distribution board, and relates to the technical field of electric control cabinets. The box body structure is provided with a heat dissipation assembly on the top, a sliding assembly is arranged in the box body structure, a bearing assembly is slidably arranged on the sliding assembly, the structure of the box body structure can be flame-retardant, the safety in case of accidents can be avoided, the heat dissipation effect is assisted to increase through the heat dissipation assembly arranged on the box body structure, the sliding assembly is arranged in the box body structure, the sliding assembly can be separately slid forward and backward, better maintenance can be realized subsequently, the bearing assembly is arranged on the sliding assembly, a quick connection assembly is arranged on the bearing assembly, the AC contactor of the quick connection assembly can be quickly disassembled and assembled, and better maintenance and replacement can be realized, the operation of the electric control cabinet can generate a large amount of heat, the heat dissipation efficiency of the simple structure is low, if the original part is damaged, the machine needs to be stopped for replacement, and unnecessary safety hidden trouble problems are caused.

Description

Technical Field

[0001] This invention relates to the field of electrical control cabinet technology, and in particular to a multifunctional protective device for a ship's main power distribution board. Background Technology

[0002] With the continuous development of the shipping industry, ships are gradually becoming larger and more intelligent, leading to a continuous increase in the demand for ship power system capacity. The installed capacity of ultra-large container ships, LNG carriers, large cruise ships, and new energy hybrid ships has increased significantly, with some special engineering vessels reaching the 100-megawatt level. This places higher demands on the capacity, operational reliability, and space utilization of ship main switchboards. Existing traditional ship main switchboards mostly adopt a decentralized layout, with independent racks and separate functional modules, occupying a large amount of ship cabin space. The numerous cables and interfaces between equipment also make later maintenance difficult and difficult to adapt to the lightweight, integrated, and intelligent design requirements of modern ships. Furthermore, with the International Maritime Organization continuously raising its standards for ship carbon emissions and energy efficiency management, ship power systems need to rely on higher levels of integration to reduce energy consumption and improve energy dispatch efficiency, driving the development of main switchboards towards integration. my country's shipbuilding industry is at a critical stage of transformation into a shipbuilding powerhouse. As the core hub of the ship's power system, the manufacturing technology of large-capacity integrated main switchboards is still monopolized by foreign companies. Domestic products still lag behind in terms of capacity, integration, and reliability. Therefore, it is urgent to carry out independent research and development, break through relevant technical barriers, realize the localization of core supporting equipment, and ensure the security of the shipbuilding industry chain and supply chain.

[0003] During ship operation, the electrical control cabinet needs to run continuously, which generates a lot of heat. The simple structure has low heat dissipation efficiency. If a component is damaged, it needs to be shut down for maintenance or replacement, which will lead to a long downtime and cause some safety hazards. Summary of the Invention

[0004] This invention provides a multi-functional protective device for a ship's main electrical distribution board. First, the enclosure structure is flame-retardant to ensure safety in case of accidents. Heat dissipation components installed on the enclosure structure further enhance heat dissipation. Sliding components are installed inside the enclosure structure and can slide independently back and forth for better subsequent maintenance. A load-bearing component is installed on the sliding component, and a quick-connect component is installed on the load-bearing component. The AC contactor of the quick-connect component allows for quick disassembly and assembly, facilitating timely maintenance and replacement.

[0005] This invention provides a multi-functional protective device for a ship's main electrical distribution board, specifically comprising: a box structure; a heat dissipation assembly installed at the top of the box structure; a sliding assembly installed inside the box structure; a load-bearing assembly slidably mounted on the sliding assembly; a quick-connect assembly mounted on the load-bearing assembly; an AC contactor fixedly mounted on the quick-connect assembly; a base plate of the quick-connect assembly fixed to the load-bearing assembly; an outer plate installed at the outer end of the base plate; an AC contactor fixedly mounted on the outer plate; a limit block set at the position where the outer plate is mounted on the base plate; the limit block being set in a right-angle shape; holes provided on the outer plate; an outer frame cylinder set at the position of the holes on the base plate corresponding to the holes on the outer plate; outer grooves provided at both ends of the outer frame cylinder; a turbine fan rotatably mounted inside the outer frame cylinder; an outer baffle installed at the outer end of the turbine fan; a wiring harness being introduced through the outer through-hole of the box structure; the wiring harness extending to the back of the load-bearing assembly; the wiring harness extending through a folding groove to the outer wire groove; and finally connecting to the outer groove of the quick-connect assembly.

[0006] Furthermore, the outer casing of the box structure is configured as a double-layer structure, with spacers installed in the interlayer of the outer casing. The spacers are arranged in an inclined manner. A top plate frame is installed at the top outer end of the outer casing. The top plate frame is also inclined. External through holes are provided at both the upper and lower ends of the outer casing. A bottom groove frame is installed at the lower end of the outer casing. Expansion grooves slide at both ends of the bottom groove frame. An auxiliary groove is provided at the outer end of the expansion groove. The auxiliary groove corresponds to the external through hole.

[0007] Furthermore, the support frame of the heat dissipation component is snapped and installed at the top of the box structure. A limit bracket is installed at the outer end of the support frame extending out of the box structure. A dustproof box is installed at the upper end of the support frame, and a cooling fan is installed at the bottom of the support frame, usually to ensure that the heat inside the box structure is dissipated.

[0008] Furthermore, the support frame of the sliding component is fixed on the inner wall of the box structure. The support frame is provided with a groove, and a side slider is slidably installed in the groove of the support frame. The side slider is fixedly installed at the outer end of the bearing component. A synchronization frame is connected and installed at the support frame. A back slide frame is connected and installed at the front end of the synchronization frame. The back slide frame is fixed at the back of the bearing component. The synchronization frame is set as a scissor mechanism, and two sets of synchronization frames are installed symmetrically.

[0009] Furthermore, the support plate of the support component is equipped with an outer frame at both ends, a docking groove is provided on one side of the support plate, a folding groove is connected and installed on the back of the docking groove of the support plate, and external wire grooves are installed on the top and bottom of the support plate.

[0010] Furthermore, the base plate is provided with external grooves at both the upper and lower ends, which are connected to the insertion grooves of the base plate. The external plate is provided with a connector at the position corresponding to the insertion groove, and the connector is connected to the corresponding connecting wire. The connecting wire is connected to the wiring terminal of the AC contactor.

[0011] This invention provides a multifunctional protective device for a ship's main electrical control panel, which has the following beneficial effects: In this invention, the enclosure structure is designed with a double layer to protect the interior and achieve flame retardant effects. A heat dissipation component is installed on the top of the enclosure structure, allowing hot air to be drawn out and exhausted directly through the heat dissipation component for better heat dissipation. A sliding component is located inside the enclosure structure and is designed with a multi-layered structure. A load-bearing component is directly installed on the sliding component, allowing the load-bearing component to slide back and forth, making subsequent maintenance and replacement of the AC contactor more convenient. A quick-connect component is added to the AC contactor mounting location. The base plate of the quick-connect component is connected to the wiring harness, and the outer plate of the quick-connect component is directly connected to the AC contactor. The base plate and the outer plate are interlocked. In case of abnormal damage to the AC contactor, the contactor can be quickly disassembled and reassembled by simply plugging and unplugging the outer plate. A turbine fan is installed inside the quick-connect component to further aid in the heat dissipation of the AC contactor, achieving efficient heat dissipation. Combined with the enclosure structure and the heat dissipation component structure, this achieves further heat dissipation and protection effects.

[0012] Furthermore, to ensure the overall enclosure structure provides fire resistance and heat insulation, it is designed as a double-layer structure with an external through-hole between the two layers. This external through-hole is angled, achieving stable heat insulation and fire resistance through the double-layer enclosure and the external through-hole, thus enhancing protection. The external through-hole on the outer enclosure allows for quick and easy insertion of external wiring harnesses. During installation, bolts and other components may inevitably fall out. A bottom tray frame is installed at the bottom of the enclosure structure, with sliding expansion slots at both ends. This allows the bottom tray frame to adapt to enclosures of any size. The bottom tray frame catches fallen parts for easy cleaning. An auxiliary slot at the outer end of the expansion slot corresponds to the external through-hole, allowing wiring harnesses to pass through the expansion slot, further improving usability.

[0013] In addition, a support frame is directly installed on the top of the enclosure structure. A limiting frame is set on the extended part of the support frame. The limiting frame can lock the support frame in place, so that the support frame is fixed on the top of the enclosure structure. A dustproof box and a cooling fan are installed on the support frame, so that the heat dissipation components can dissipate the hot air, while the dustproof box filters the air and isolates the dust.

[0014] In addition, the support frame is directly installed on the inner wall of the box structure. The support frame has a groove structure, which allows the side slider to slide on the support frame. The side slider is fixed on the load-bearing component, so that the load-bearing component can slide stably on the support frame. When maintenance is required, the AC contactor at the load-bearing component can be inspected and replaced by simply sliding it. The synchronous frame is directly connected to the rear side of the support frame. The front end of the synchronous frame is connected to the back slide frame on the back of the load-bearing component. The synchronous frame is set with a scissor mechanism, so that the synchronous frame assists in connecting and supporting the load-bearing component. The synchronous frame provides auxiliary front and rear sliding support for the load-bearing component, ensuring that the sliding of the load-bearing component is relatively stable.

[0015] In addition, the outer groove of the carrier plate is first set as the combing and fixing structure of the wire harness, and the carrier component is set to slide back and forth on the sliding component. In order to ensure stable connection of the wire harness, a docking groove is directly set on one side of the carrier plate, and then a folding groove is connected and installed at the docking groove, so that the folding groove can install the wire harness, allowing the wire harness to have a certain extension distance, ensuring that the wire harness slides back and forth with the carrier component.

[0016] Furthermore, if the AC contactor is damaged, it needs to be disassembled. However, disassembling the AC contactor as a whole is quite difficult. Therefore, a quick-connect assembly is added to the original mounting component of the AC contactor. An outer plate is installed on the outer end of the base plate of the quick-connect assembly, and the AC contactor is directly installed on the outer end of the outer plate. This allows for quick assembly and disassembly of the AC contactor. A limit block is set at the corresponding position of the base plate and the outer plate. The limit block is set at a right angle to guide the outer plate when it is installed on the base plate, making the installation more convenient. AC contactors usually generate heat during operation, so holes are provided at the outer plate. An outer frame cylinder is set at the corresponding position of the holes in the base plate. At the same time, an outer groove is set on the outer end of the outer frame cylinder. When the turbine fan inside the outer frame cylinder is running, it will circulate air through the outer frame cylinder. The airflow is facilitated by the structure of the outer groove and outer frame cylinder, which better enables airflow. The outer baffle provides auxiliary shielding, and the outer plate also has a groove structure to assist in heat dissipation for the AC contactor. To facilitate quick assembly and disassembly of the base plate and the outer plate, an outer groove is directly provided on the base plate, allowing the external wiring harness to connect directly to the plug slot. When the outer plate is installed on the base plate, the plug of the outer plate will directly plug into the plug slot, connecting the outer groove and the plug. At the same time, the plug and the connecting wire are connected. The connecting wire is designed to connect to the wiring terminal of the AC contactor, enabling stable wiring and use of the AC contactor. Therefore, if the AC contactor is damaged, the outer plate with the AC contactor can be directly removed for quick replacement or subsequent maintenance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this application is shown; Figure 2 A schematic diagram of the outer casing structure of this application is shown; Figure 3 A schematic diagram of the outer casing and spacer structure of this application is shown; Figure 4 A schematic diagram of the heat dissipation component structure of this application is shown; Figure 5 A schematic diagram of the sliding component structure of this application is shown; Figure 6 A schematic diagram of the load-bearing component structure of this application is shown; Figure 7 A schematic diagram of the structure of the carrier component and quick-connect component of this application is shown; Figure 8 A schematic diagram of the base plate and outer plate structure of this application is shown; Figure 9 A schematic diagram of the base plate and turbine fan structure of this application is shown; List of reference numerals 1. Box structure; 101. Outer box; 102. Spacer; 103. External through hole; 104. Top plate frame; 105. Bottom groove frame; 106. Expansion groove; 107. Auxiliary groove; 2. Heat dissipation components; 201. Support frame; 202. Limiting frame; 203. Dustproof box; 204. Cooling fan; 3. Sliding assembly; 301. Support frame; 302. Back slide frame; 303. Synchronizing frame; 304. Side slider; 4. Load-bearing components; 401. Load-bearing plate; 402. External frame; 403. Folding groove; 404. Connecting groove; 405. External cable tray; 5. Quick-connect assembly; 501. Base plate; 502. External groove; 503. Plug-in groove; 504. Limiting block; 505. External groove; 506. External frame cylinder; 507. Turbine fan; 508. External baffle; 509. External plate; 510. Connecting wire; 511. Plug-in connector; 6. AC contactor. Detailed Implementation

[0020] Example 1: Please refer to Figures 1 to 9 : This invention proposes a multi-functional protective device for a ship's main electrical distribution board, comprising: a housing structure 1; a heat dissipation assembly 2 installed at the top of the housing structure 1; a sliding assembly 3 installed inside the housing structure 1; a load-bearing assembly 4 slidably mounted on the sliding assembly 3; a quick-connect assembly 5 mounted on the load-bearing assembly 4; an AC contactor 6 fixedly mounted on the quick-connect assembly 5; a base plate 501 of the quick-connect assembly 5 fixedly mounted on the load-bearing assembly 4; an external plate 509 installed at the outer end of the base plate 501; an AC contactor 6 fixedly mounted on the external plate 509; and a limit block 50 provided at the position where the external plate 509 is mounted on the base plate 501. 4. The limiting block 504 is set in a right-angle shape. If the AC contactor 6 is damaged, it needs to be disassembled. However, the overall disassembly of the AC contactor 6 is difficult. Therefore, a quick-connect component 5 is added to the original mounting component 4 where the AC contactor 6 is installed. An external plate 509 is installed on the outer end of the base plate 501 of the quick-connect component 5. The AC contactor 6 is directly installed on the outer end of the external plate 509, so that the quick-connect component 5 can quickly install and remove the AC contactor 6. The base plate 501 is provided with a limiting block 504 corresponding to the external plate 509. The limiting block 504 is set in a right-angle shape, which allows the external plate 509 to be installed on the base plate. Plate 501 serves as an auxiliary guide, facilitating easier installation. The outer plate 509 has holes, and the base plate 501 has an outer support cylinder 506 corresponding to these holes. The outer support cylinder 506 has outer grooves 505 at both ends, and a turbine fan 507 is rotatably mounted inside it. An outer baffle 508 is installed at the outer end of the turbine fan 507. During operation, the AC contactor 6 generates heat, hence the holes in the outer plate 509. The base plate 501 has the outer support cylinder 506 corresponding to these holes, and the outer end of the outer support cylinder 506 on the base plate 501 has... When the turbine fan 507 inside the outer slot 505 and outer frame cylinder 506 is running, airflow will be carried out through the outer frame cylinder 506. The structure of the outer slot 505 and outer frame cylinder 506 better realizes the airflow. The outer baffle 508 plays an auxiliary role in shielding. The outer connecting plate 509 also has a groove structure to achieve auxiliary heat dissipation for the AC contactor 6 of the outer connecting plate 509. The wiring harness is introduced through the outer through hole 103 of the housing structure 1. The wiring harness extends to the back of the bearing component 4 for installation. The wiring harness will extend through the folding slot 403 to the outer wire slot 405. Finally, the wiring harness is connected to the outer connecting slot 502 of the quick connector component 5.

[0021] Among them, such as Figure 2 Figure 3As shown, the outer casing 101 of the box structure 1 is a double-layer structure. Spacers 102 are installed within the interlayer of the outer casing 101, arranged at an angle. A top plate frame 104 is installed at the top outer end of the outer casing 101, also at an angle. To ensure the overall fireproof and heat-insulating function of the box structure 1, it is directly configured as a double-layer structure. An external through-hole 103 is provided between the interlayers of the outer casing 101, also at an angle. This achieves stable heat insulation and fireproofing through the double-layered outer casing 101 and the external through-hole 103, thereby increasing protection. External through-holes 103 are provided at both the top and bottom ends of the outer casing 101. A bottom groove frame 105 is installed at the lower end of the outer casing 101, with sliding expansion grooves 10 at both ends. 6. An auxiliary slot 107 is provided at the outer end of the expansion slot 106. The auxiliary slot 107 corresponds to the external through hole 103. The external through hole 103 is provided on the outer housing 101 to facilitate the quick introduction of external wire harnesses. When the overall setup is in use and installed, some bolts and other parts may fall off. The bottom slot frame 105 is installed at the bottom of the housing structure 1. At the same time, the expansion slots 106 are slidably installed at both ends of the bottom slot frame 105. The bottom slot frame 105 can adapt to the interior of the housing structure 1 of any size through the expansion slots 106. The bottom slot frame 105 can catch fallen parts for easy cleaning. The auxiliary slot 107 at the outer end of the expansion slot 106 corresponds to the external through hole 103. When the expansion slot 106 is in use, the wire harness can pass through the auxiliary slot 107 to achieve a certain degree of convenience.

[0022] Among them, such as Figure 3 Figure 4 As shown, the support frame 201 of the heat dissipation component 2 is snapped onto the top of the housing structure 1. A limit bracket 202 is installed at the outer end of the support frame 201 extending out of the housing structure 1. A dustproof box 203 is installed on the upper end of the support frame 201, and a cooling fan 204 is installed at the bottom of the support frame 201. Usually, in order to ensure the heat inside the housing structure 1 is dissipated, the support frame 201 is directly installed on the top of the housing structure 1. A limit bracket 202 is set on the top protruding part of the support frame 201. The limit bracket 202 can snap onto the support frame 201, so that the support frame 201 is fixed on the top of the housing structure 1. The dustproof box 203 and the cooling fan 204 are respectively installed on the support frame 201, so that the heat dissipation component 2 can dissipate the hot air, while the dustproof box 203 filters the airflow to isolate dust.

[0023] Among them, such as Figure 5 Figure 6As shown, the support frame 301 of the sliding component 3 is fixed to the inner wall of the housing structure 1. A groove is provided on the support frame 301, and a side slider 304 is slidably installed in the groove. The side slider 304 is fixedly installed at the outer end of the load-bearing component 4. The support frame 301 is directly set on the inner wall of the housing structure 1, and the groove structure on the support frame 301 allows the side slider 304 to slide on the support frame 301. The side slider 304 is fixed to the load-bearing component 4, enabling stable sliding of the load-bearing component 4 on the support frame 301. When maintenance is required, the AC contactor 6 at the load-bearing component 4 can be easily accessed and replaced by simply sliding the slider. A timing frame 303 is connected and installed at the support frame 301. A back slide frame 302 is connected and installed at the front end of the timing frame 303. The back slide frame 302 fixes the back position of the bearing component 4. The timing frame 303 is configured as a scissor mechanism. Two sets of timing frames 303 are installed symmetrically. The timing frame 303 is directly connected and installed at the rear side of the support frame 301. The front end of the timing frame 303 is connected to the back slide frame 302 on the back of the bearing component 4. The timing frame 303 is configured as a scissor mechanism to enable the timing frame 303 to assist in connecting and supporting the bearing component 4, so as to achieve the auxiliary front and rear sliding support of the timing frame 303 for the bearing component 4 and ensure the relative stability of the sliding of the bearing component 4.

[0024] Among them, such as Figure 6 Figure 7 As shown, the support plate 401 of the support assembly 4 has an outer frame 402 installed at both ends. A docking groove 404 is provided on one side of the support plate 401. A folding groove 403 is connected and installed on the back of the docking groove 404 of the support plate 401. External wire grooves 405 are installed on the top and bottom of the support plate 401. First, the external wire grooves 405 of the support plate 401 are set as a wire harness combing and fixing structure. The support assembly 4 is set to slide back and forth on the sliding assembly 3. In order to ensure stable connection of the wire harness, the docking groove 404 is directly provided on one side of the support plate 401. Then, the folding groove 403 is connected and installed at the docking groove 404, so that the folding groove 403 can install the wire harness, allowing the wire harness to have a certain extension distance, ensuring that the wire harness slides back and forth with the support assembly 4.

[0025] Among them, such as Figure 8 Figure 9As shown, the base plate 501 has external grooves 502 at both its upper and lower ends. These external grooves 502 connect to the insertion grooves 503 of the base plate 501. The external plate 509 has a connector 511 at the position corresponding to the insertion groove 503. The connector 511 connects to the corresponding connecting wire 510, which is connected to the wiring terminal of the AC contactor 6. To facilitate quick assembly and disassembly of the base plate 501 and the external plate 509, the external groove 502 is directly provided on the base plate 501, allowing the external wiring harness to connect directly to the insertion groove 503. When the connection board 509 is installed on the base plate 501, the connector 511 of the external connection board 509 will be directly plugged into the connector slot 503, so that the external connector slot 502 and the connector 511 are connected. At the same time, the connector 511 is connected to the connecting wire 510. The connecting wire 510 is set to be connected to the wiring port of the AC contactor 6 to achieve stable wiring of the AC contactor 6. Therefore, when the AC contactor 6 is damaged, the external connection board 509 with the AC contactor 6 can be directly removed to quickly replace the AC contactor 6 or perform subsequent maintenance.

[0026] The working principle of this invention is as follows: During installation, the wire harness is directly introduced from the external through hole 103 of the housing structure 1. Then, the specified wire harness is aligned with the folding groove 403 position of the bearing component 4 and guided into the external wire groove 405. The wire harness is then connected and installed at the external groove 502 of the quick-connect component 5. At this time, the AC contactor 6 is installed on the external plate 509 of the quick-connect component 5. The connecting wire 510 is fixed at the specified position of the AC contactor 6, and the connecting wire 510 corresponds to the specified plug 511. The external plate 509 is plugged into the plug groove 503 of the base plate 501 through the plug 511, thus completing the wire harness arrangement and connection with the quick-connect component 5, and simultaneously realizing the plug-in installation of the AC contactor 6 in the quick-connect component 5. When performing maintenance, if the corresponding AC contactor 6 is damaged, the bearing assembly 4 needs to be slid directly from the sliding assembly 3 toward the front end to make the AC contactor 6 at the bearing assembly 4 easy to inspect and observe. If the specified AC contactor 6 is damaged, the power can be cut off directly and the AC contactor 6 can be removed through the quick-connect assembly 5. There is no need to fix it with bolts, and the replacement and maintenance speed is faster.

Claims

1. A multi-functional protective device for a ship's main electrical control panel, comprising: Box structure (1); a heat dissipation assembly (2) is installed at the top of the box structure (1), characterized in that a sliding assembly (3) is installed inside the box structure (1), a bearing assembly (4) is slidably installed on the sliding assembly (3), a quick-connect assembly (5) is installed on the bearing assembly (4), an AC contactor (6) is fixedly installed on the quick-connect assembly (5), the base plate (501) of the quick-connect assembly (5) is fixed on the bearing assembly (4), an external plate (509) is installed at the outer end of the base plate (501), an AC contactor (6) is fixedly installed on the external plate (509), and a limit block (50) is provided at the position where the external plate (509) is installed on the base plate (501). 4) The limiting block (504) is set in a right angle shape. The outer plate (509) is provided with holes. The base plate (501) is provided with an outer frame cylinder (506) corresponding to the hole position of the outer plate (509). The outer frame cylinder (506) is provided with outer grooves (505) at both ends. The turbine fan (507) is rotatably installed inside the outer frame cylinder (506). The outer baffle (508) is installed at the outer end of the turbine fan (507). The wire harness is introduced through the outer through hole (103) of the box structure (1). The wire harness extends to the back of the bearing component (4). The wire harness will extend to the outer wire groove (405) through the folding groove (403). Finally, the wire harness is connected to the outer groove (502) of the quick connector component (5).

2. The multi-functional protective device for a ship's main electrical distribution board according to claim 1, characterized in that, The outer box (101) of the box structure (1) is configured as a double-layer structure. A spacer (102) is installed in the interlayer of the outer box (101). The spacer (102) is arranged in an inclined manner. A top plate frame (104) is installed at the top outer end of the outer box (101). The top plate frame (104) is arranged in an inclined manner.

3. A multi-functional protective device for a ship's main electrical distribution board according to claim 2, characterized in that, The outer casing (101) is provided with external through holes (103) at both the upper and lower ends. A bottom groove frame (105) is installed at the lower end inside the outer casing (101). Expansion grooves (106) slide at both ends of the bottom groove frame (105). An auxiliary groove (107) is provided at the outer end of the expansion groove (106). The auxiliary groove (107) corresponds to the external through hole (103).

4. A multi-functional protective device for a ship's main electrical control panel according to claim 1, characterized in that, The support frame (201) of the heat dissipation component (2) is snapped on the top of the box structure (1). The support frame (201) extends out of the outer end of the box structure (1) and is equipped with a limit frame (202). A dustproof box (203) is installed on the upper end of the support frame (201), and a heat dissipation fan (204) is installed at the bottom of the support frame (201). This is usually done to ensure that the heat inside the box structure (1) is dissipated.

5. A multi-functional protective device for a ship's main electrical distribution board according to claim 1, characterized in that, The support frame (301) of the sliding component (3) is fixed on the inner wall of the box structure (1). The support frame (301) is provided with a groove. A side slider (304) is slidably installed in the groove of the support frame (301). The side slider (304) is fixedly installed at the outer end of the bearing component (4).

6. A multi-functional protective device for a ship's main electrical distribution board according to claim 5, characterized in that, A timing frame (303) is connected and installed at the support frame (301). A back slide frame (302) is connected and installed at the front end of the timing frame (303). The back slide frame (302) fixes the back position of the bearing component (4). The timing frame (303) is configured as a scissor mechanism. The timing frame (303) is configured as two sets installed symmetrically.

7. A multi-functional protective device for a ship's main electrical distribution board according to claim 1, characterized in that, The bearing assembly (4) has an outer frame (402) installed at both ends of the bearing plate (401), a docking groove (404) is provided on one side of the bearing plate (401), a folding groove (403) is connected and installed on the back of the docking groove (404) of the bearing plate (401), and an outer wire groove (405) is installed on the top and bottom of the bearing plate (401).

8. A multi-functional protective device for a ship's main electrical control panel according to claim 1, characterized in that, The base plate (501) is provided with external grooves (502) at both the upper and lower ends. The external grooves (502) are connected to the plug grooves (503) of the base plate (501). The external plate (509) is provided with plug connectors (511) at the position corresponding to the plug grooves (503). The plug connectors (511) are connected to the corresponding connecting lines (510). The connecting lines (510) are connected to the wiring terminals of the AC contactor (6).

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