B15-A fireproof bulkhead box

Abstract

The utility model belongs to the technical field of marine flame-retardant equipment, and relates to a B15-A fireproof bulkhead box. Comprising a box outer shell, a box inner shell, a supporting base, preformed holes, fixing nail groove structures and the like. Preformed holes are formed in the four end corners of the side wall of the upper portion of the box outer shell, the box outer shell is nested outside the box inner shell, a supporting base is arranged on the lower portion of the box inner shell, a set of inner fixing hole grooves are formed in the two short side walls in the box inner shell in an axial symmetry mode, a set of outer fixing grooves are formed in the two long side walls in the box inner shell in a central symmetry mode, and the outer fixing grooves are close to the end corners of the box inner shell. The outer fixing groove is composed of a cylindrical groove cavity at the lower end and a sunken semi-cylindrical groove cavity in the upper middle portion of the box shell, the box body is installed in the thin wall through a fastening screw, a metal clamping plate, the outer fixing groove and a buckle fastening plate, the box shell is provided with an aluminum strip sheet grid, and the box body is made of fireproof flame-retardant materials in an injection molding mode. According to the device, the internal groove cavity space is expanded, and the device can be suitable for switching of multiple lines, and is firm in installation, flame-retardant, high-temperature-resistant and high in safety.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of marine flame -retardant equipment, relates to a marine fire -resistant bulkhead box with high temperature resistance and excellent flame -retardant performance has high temperature resistance and the function of flame -retardant reaches B15 grade ship fire -resistant grade, especially a B15-A fire -resistant bulkhead box. BACKGROUND

[0002] The ship structure should meet the requirements of stability, strength, stiffness, vibration and noise reduction. Marine plastic devices should be made of corrosion-resistant, wear-resistant and high-temperature-resistant plastic materials, such as polyethylene and polypropylene. At the same time, the material of the device should have sufficient strength and stiffness to withstand the influence of ship rocking and vibration, and ensure that the device will not be deformed or damaged.

[0003] For the plastic of the ship fireproof area, fireproof insulation material needs to be used. According to the General Specification for Ships and the Fire Protection Requirements for Ships, the fire resistance level of the ship is divided into A, B and C. The structural fireproof design needs to meet the fire resistance level requirements of the ship fireproof area and the cabin fireproof boundary specified in the specification. Thermal conductivity is the main indicator to measure the performance of fire-resistant materials, and is an important physical parameter of fire-resistant materials. The smaller the thermal conductivity, the better the fire resistance.

[0004] The junction box is one of the auxiliary materials for circuit layout. When installing the wire, the junction box is often used as a transition at the joint of the wire. The wire is connected and tapped in the junction box, and the junction box plays a role in protecting the safety of the wire connection, preventing electric shock and ensuring the stability of the connection. When the ship sails on the sea, the sea environment is relatively harsh, the humidity is high, the salt spray corrosion ability is strong, and the ship swings and shakes obviously. Therefore, the marine junction box used on the ship requires light weight, high strength, corrosion resistance, stable connection, and in the ship cabin protection area, the marine junction box also requires fireproof and flame retardant characteristics.

[0005] However, the current marine junction box has poor high temperature resistance, poor flame retardant effect, and is not firmly installed. After ignition, it cannot effectively prevent the spread of fire, and the production cost is high. When there are many lines, the conventional junction box cavity is small, which is difficult to meet the use demand. SUMMARY

[0006] The purpose of the present application is to overcome the shortcomings of the prior art, and to design a B15-A fireproof bulkhead box that overcomes the shortcomings of the prior art, such as poor high temperature resistance, poor flame retardant effect, and poor installation.

[0007] In order to achieve the above-mentioned purpose, the application relates to a B15-A fireproof bulkhead box, and the main structure comprises a box shell, a box inner shell, a supporting base, a reserved hole, a fixed plate groove, a fastening screw, a metal clamping plate, an outer fixed groove, a buckle fastening plate, an inner fixed hole groove and a fixed screw; the box shell is an integrated structure with an oval cylinder shape at the lower part and an oval table shape at the upper part; the four end corners of the upper side wall of the box shell are provided with reserved holes, which are used for passing through wires after being punched through; the box shell is fixedly connected outside the box inner shell, the box inner shell is integrally provided with the supporting base at the lower part, the supporting base is composed of four end corners and circular arcs between every two end corners, the four protruding end corners of the supporting base increase the contact area of the box body and the thin wall, and installation is more stable; a group of inner fixed hole grooves are symmetrically arranged on the two short side walls inside the box inner shell, the fixed hole groove is in a cylindrical shape as a whole, and the fixed screw is threadedly connected with the inner fixed hole groove; a group of outer fixed grooves are symmetrically arranged on the two long side walls inside the box inner shell, the outer fixed groove is located close to the end corner of the box inner shell, the outer fixed groove is arranged at intervals with the fixed hole groove, the outer fixed groove penetrates out of the box inner shell and communicates with the box shell, and the outer fixed groove is composed of a lower cylindrical groove cavity and a semicylindrical groove cavity which is recessed in the upper part of the box shell; the fastening screw penetrates into the outer fixed groove, the metal clamping plate is sleeved on the front middle part of the fastening screw, one end of the metal clamping plate is provided with a through hole, the metal clamping plate is sleeved on the fastening screw through the through hole, the other end of the metal clamping plate is in a sharp shape, the sharp end of the metal clamping plate can be combined more closely with the thin wall during installation, the front end of the fastening screw is threadedly installed with the buckle fastening plate, the buckle fastening plate can abut against the through hole end of the metal clamping plate during installation, and the buckle fastening plate limits and fixes the metal clamping plate; the outer fixed groove is provided with the fixed plate groove at the front end, and the fixed plate groove is located at the top end of the box shell; according to the number of lines connected with the B15-A fireproof bulkhead box, the box inner shell is not provided with a partition plate or is provided with a partition plate which is combined in the form of a long clamping plate and a short clamping plate.

[0008] The side wall of the box shell is further provided with an expansion expansion groove, which provides a certain expansion space when an explosion occurs inside the B15-A fireproof bulkhead box, and reduces the risk of explosion of the B15-A fireproof bulkhead box.

[0009] In order to improve the stability and strength of the B15-A fireproof bulkhead box, the inner top edge of the box inner shell is symmetrically provided with a reinforcing rib.

[0010] The box shell and the box inner shell of the B15-A fireproof bulkhead box are made of fireproof and flame-retardant materials by injection molding.

[0011] The box shell is provided with a grid composed of two or more aluminum strip pieces, and the grid has the effects of preventing static electricity and resisting combustion when the product is on fire.

[0012] The B15-A fireproof bulkhead box is installed in the thin-wall opening wall through slot, the rotating fastening screw is used for tightly combining the metal clamping plate pointed end with one side of the thin wall, the fastening plate is used for limiting and fixing the metal clamping plate, the supporting base is tightly combined with the other side of the thin wall, and the B15-A fireproof bulkhead box is fixed on the thin wall; the fixing screw is connected with the inner fixing hole groove, and the circuit device is fixedly connected with the B15-A fireproof bulkhead box.

[0013] Further, the box inner shell is provided with one or more than one partition plate, the partition plate is fixed in the box inner shell, the partition plate divides the groove cavity of the box inner shell, and the clamping plate reserved hole is arranged on the partition plate.

[0014] Further, the box inner shell is provided with one or more than one partition plate, the partition plate is fixed in the box inner shell, the partition plate divides the groove cavity of the box inner shell, and the clamping plate reserved hole is arranged on the partition plate.

[0015] The technical effects achieved by the application are as follows:

[0016] (1) The B15-A fireproof bulkhead box expands the space of the box cavity, improves the structural stability and installation stability through the unique structural design, the grid formed by the peripheral aluminum sheet not only plays a role in preventing static electricity when the product is burning, but also tightly wraps the product, slows down the spread of fire, and prolongs the escape time.

[0017] (2) The combination design of the fastening screw, the metal clamping plate, the outer fixed groove and the fastening plate better fixes the product, and firmly locks the product and does not easily loosen.

[0018] (3) The combination of the integrally formed box outer shell and the box outer shell enhances the fireproof performance, the multiple inner fixing hole grooves and the corresponding fixing screws simplify the installation and maintenance process, the reinforcing ribs on the inner side of the box enhance the mechanical strength, the wiring reserved hole improves the safety, the overall design meets the functionality while also considering the aesthetics, and provides a safe, efficient, durable and beautiful electrical installation solution for users. The B15-A fireproof bulkhead box can be applied to thin-wall places such as ship bulkhead, indoor partition thin wall, temporary housing wall (construction site shed, office, etc.), and has wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1This is a schematic diagram of the external structure of the B15-A fireproof cabin wall box involved in the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of the B15-A fireproof cabin wall box involved in the present invention.

[0021] Figure 3 This is a schematic diagram of the installation of the B15-A fireproof cabin wall box involved in this invention.

[0022] Figure 4 This is a schematic diagram of the partition plate involved in the present invention.

[0023] Figure 5 This is a schematic diagram of the slotted partition plate involved in the present invention.

[0024] Figure 6 This is a schematic diagram of the short plate groove and the long plate groove involved in the present invention. Detailed implementation method:

[0025] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0026] Example 1:

[0027] This embodiment relates to a B15-A fireproof cabin wall box, including an outer shell 1, an inner shell 2, a support base 3, reinforcing ribs 4, expansion grooves 5, pre-drilled holes 6, a fixing plate groove 7, fastening screws 8, a metal clip 9, an outer fixing groove 10, a fastening plate 11, an inner fixing hole groove 12, and fixing screws 13; Figure 1 As shown, the outer shell of the box is a single-piece structure with an elliptical cylindrical lower part and an elliptical frustum upper part. Pre-drilled holes 6 are provided at the four corners of the upper side wall of the outer shell 1, which are then opened to allow electrical wires to pass through. The outer shell 1 is nested inside the inner shell 2 and fixedly connected. A support base 3 is integrally formed at the lower part of the inner shell 2. Figure 2As shown, the support base 3 is composed of four end corners and circular arc edges between each two end corners, the four protruding end corners of the support base 3 increase the contact area between the box and the thin wall (such as the cabin wall), and the installation is more stable; a set of inner fixing hole grooves 12 are symmetrically arranged on the two short side walls inside the box inner shell 2, the inner fixing hole grooves 12 are in a cylindrical shape as a whole, and the fixing screws 13 are threadedly connected with the inner fixing hole grooves 12; a set of outer fixing grooves 10 are symmetrically arranged at the centers of the two long side walls inside the box inner shell 2, the outer fixing grooves 10 are located close to the end corners of the box inner shell 2, the outer fixing grooves 10 are arranged in a spaced manner with the inner fixing hole grooves 12, the outer fixing grooves 10 pass through the box inner shell 2 and are in communication with the box outer shell 1, and the outer fixing grooves 10 are composed of a lower end cylindrical groove cavity and a semi-cylindrical groove cavity which is recessed in the upper part of the box outer shell 1; the fastening screws 8 pass into the outer fixing grooves 10, the metal clamping plates 9 are sleeved on the front middle parts of the fastening screws 8, one end of each metal clamping plate 9 is provided with a through hole, the metal clamping plate 9 is sleeved on the fastening screw 8 through the through hole, the other end of each metal clamping plate 9 is in a sharp shape, the sharp end of the metal clamping plate 9 can be combined more closely with the thin wall during installation (according to the different materials of the thin wall, the sharp end of the metal clamping plate 9 penetrates into the thin wall to different degrees), the front end of each fastening screw 8 is threadedly installed with a buckle fastening plate 11, the buckle fastening plate 11 can abut against the through hole end of the metal clamping plate 9 during installation, and the buckle fastening plate 11 limits and fixes the metal clamping plate 9; the outer fixing grooves 10 are provided with a fixed plate groove 7 at the front end, as shown in the figure, the fixed plate groove 7 is located at the top end of the box outer shell 1, and the fixed plate groove 7 is used for placing the buckle fastening plate 11 when the B15-A fireproof cabin wall box is packaged and transported, the fixed plate groove 7 fixes the buckle fastening plate 11 by relying on the friction force, and the fastening screw 8, the metal clamping plate 9 and the buckle fastening plate 11 are prevented from moving greatly. Figure 1 As shown in the figure, the fixed plate groove 7 is located at the top end of the box outer shell 1, and the fixed plate groove 7 is used for placing the buckle fastening plate 11 when the B15-A fireproof cabin wall box is packaged and transported, the fixed plate groove 7 fixes the buckle fastening plate 11 by relying on the friction force, and the fastening screw 8, the metal clamping plate 9 and the buckle fastening plate 11 are prevented from moving greatly.

[0028] The side wall of the box outer shell 1 is further provided with an expansion and contraction groove 5, which provides a certain expansion space when an explosion occurs inside the B15-A fireproof cabin wall box, so as to reduce the risk of explosion of the B15-A fireproof cabin wall box.

[0029] In order to improve the stability and strength of the B15-A fireproof cabin wall box, the reinforcing ribs 4 are symmetrically arranged at the top edges inside the box inner shell 2.

[0030] The box outer shell 1 and the box inner shell 2 of the B15-A fireproof cabin wall box are made of fireproof and flame-retardant materials and are injection molded, the B15-A fireproof cabin wall box expands the internal space and can be applied to a large number of line switching; the B15-A fireproof cabin wall box realizes the stability of its own structure and the firmness of installation through its unique structural design, has high safety and beautiful structure, and can be applied to thin wall places such as cabin walls, indoor partition thin walls and temporary housing walls.

[0031] Example 2:

[0032] The B15-A fireproof bulkhead box of embodiment 1, the box shell 1 is provided with a mesh formed by interlacing two or more aluminum strips, which not only plays a role in preventing static electricity when the product is burning, but also tightly wraps the B15-A fireproof bulkhead box. Once burning occurs, it reduces the burning and dripping of the B15-A fireproof bulkhead box, and the splashing of fragments after the explosion, thereby increasing the fire retardant effect.

[0033] Embodiment 3:

[0034] As shown in Figure 3 , the specific installation method of the B15-A fireproof bulkhead box of embodiment 1 is as follows:

[0035] (1) Junction box fixing: a wall through groove is formed on the thin wall of the cabin plate, indoor partition thin wall, temporary housing (construction site shed, office, etc.), and the B15-A fireproof bulkhead box is installed in the wall through groove. Rotate the fastening screw 8 to tightly combine the pointed end of the metal clamping plate 9 with one side of the thin wall, and buckle the fastening plate 11 to limit and fix the metal clamping plate 9, and the supporting base 3 is tightly combined with the other side of the thin wall. The B15-A fireproof bulkhead box is fixed on the thin wall.

[0036] (2) Line introduction: according to the number of line access, use a drill bit to pass through the reserved hole 6 of the B15-A fireproof bulkhead box, and pass the pipeline into the internal groove of the B15-A fireproof bulkhead box through the reserved hole 6.

[0037] (3) Connection of circuit devices: connect switches, plug-in sockets, lamps and other circuit devices with pipelines, and connect circuit devices with B15-A fireproof bulkhead box through fixed screw 13 and internal fixed hole groove 12. In the thin wall circuit installation environment, the B15-A fireproof bulkhead box avoids the exposure of the line introduction connection end, ensures the safety of electricity use, and effectively delays the spread of fire when the fire occurs outside or inside the line connection end.

[0038] Embodiment 4:

[0039] The B15-A fireproof bulkhead box of embodiment 1, the box inner shell 2 is provided with one or more partition plates 14, which are fixed in the box inner shell 2. When multiple lines enter the B15-A fireproof bulkhead box for connection, the partition plate 14 can reduce the mutual influence of multiple connection lines and improve safety.

[0040] As shown in Figure 4 , the partition plate 14 is provided with a clamping plate reserved hole 15. When the lines entering the internal groove of the junction box need to be divided into two branches for connection, the clamping plate reserved hole 15 is passed through, so that one branch of the groove on one side of the partition plate 14 enters the groove on the other side of the partition plate 14 through the clamping plate reserved hole, and the circuit is connected.

[0041] Example 5:

[0042] Because the B15-A fireproof cabin wall box sometimes needs to connect too many lines (such as in a temporary office on a construction site, where network cables, electrical circuits, and other wiring need to be installed), in order to rationally plan the application of the B15-A fireproof cabin wall box's slots and reduce the interference between lines; the B15-A fireproof cabin wall box described in Example 1, such as Figure 5 As shown, the inner shell 2 of the box is provided with one or more partition plates 14. The partition plate 14 is composed of short card plates 16 and long card plates 17. The short card plate 16 is provided with a short card slot 18 in the middle, and the long card plate 17 is provided with long card slots 19 at equal intervals. The short card plate 16 and the long card plate 17 are fixedly connected by inserting a card through the short card slot 18 and the long card slot 19. After connection, the top and bottom surfaces of the short card plate 16 and the long card plate 17 are flush. Figure 6 As shown, a short plate slot 20 and a long plate slot 21 are provided inside the inner shell 2 of the box. The short plate slot 20 is fixedly connected to the short card plate 16 by a plug-in type, thereby fixing the short card plate 16 in the inner shell 2 of the box. The long plate slot 21 is fixedly connected to the long card plate 17 by a plug-in type, thereby fixing the long card plate 17 in the inner shell 2 of the box. The partition plate 14 divides the cavity of the inner shell 2 of the box. When multiple lines enter the B15-A fireproof cabin wall box for connection, the long card plate 17 and the short card plate 16, as well as the number of short card plates 16, are set according to the number of lines connected to the B15-A fireproof cabin wall box. The application of the cavity of the B15-A fireproof cabin wall box is reasonably planned to reduce the mutual influence of multiple connection lines and improve the safety of line connection.

Claims

1. A B15-A fire rated bulkhead box characterized by: The main structure comprises a box shell, a box inner shell, a support base, a reserved hole, a fixed plate groove, a fastening screw, a metal clamping plate, an outer fixed groove, a buckle fastening plate, an inner fixed hole groove and a fixed screw; the box shell is an integrated structure with an elliptical cylinder shape at the lower part and an elliptical table shape at the upper part, and the upper part of the box shell is provided with four reserved holes at the four corners of the side wall; the box shell is fixedly connected outside the box inner shell, the box inner shell is integrally provided with a support base at the lower part, and the support base is composed of four corners and arcs between every two corners; a group of inner fixed hole grooves are symmetrically arranged in the two short side walls inside the box inner shell, the fixed hole groove is in a cylindrical shape as a whole, and the fixed screw is threadedly connected with the inner fixed hole groove; a group of outer fixed grooves are symmetrically arranged in the two long side walls inside the box inner shell, the outer fixed groove is located close to the corner of the box inner shell, the outer fixed groove is arranged at intervals with the fixed hole groove, the outer fixed groove penetrates out of the box inner shell and communicates with the box shell, and the outer fixed groove is composed of a lower cylindrical groove cavity and a semi-cylindrical groove cavity which is recessed in the upper part of the box shell; the fastening screw penetrates into the outer fixed groove, the metal clamping plate is sleeved on the front middle part of the fastening screw, and the front end of the fastening screw is threadedly installed with the buckle fastening plate; according to the number of the B15-A fireproof bulkhead box connecting lines, the box inner shell is not provided with a partition plate or is provided with a partition plate which is combined with the long clamping plate and the short clamping plate in the form of a clamping groove.

2. The B15-A fire rated bulkhead box of claim 1, wherein: One end of the metal clamping plate is provided with a through hole, the metal clamping plate is sleeved on the fastening screw through the through hole, the other end of the metal clamping plate is in the form of a sharp end, the sharp end of the metal clamping plate can be combined more closely with the thin wall during installation, the buckle fastening plate can abut against the through hole end of the metal clamping plate, and the buckle fastening plate limits and fixes the metal clamping plate.

3. The B15-A fire rated bulkhead box of claim 2, wherein: The side wall of the box shell is further provided with an expansion and contraction groove; the front end of the outer fixed groove is provided with a fixed plate groove, and the fixed plate groove is located at the top end of the box shell.

4. The B15-A fire rated bulkhead box of claim 3, wherein: The top end edge inside the box inner shell is symmetrically provided with a reinforcing rib.

5. The B15-A fire rated bulkhead box of claim 4, wherein: The box shell and the box inner shell are made of fireproof and flame-retardant materials and are injection-molded.

6. The B15-A fire rated bulkhead box of claim 5, wherein: The box shell is provided with a grid which is composed of two or more aluminum strips.

7. The B15-A fire rated bulkhead box of claim 6, wherein: The B15-A fireproof bulkhead box is installed in the wall through groove of the thin wall, the fastening screw is rotated, the sharp end of the metal clamping plate is closely combined with one side of the thin wall, the buckle fastening plate limits and fixes the metal clamping plate, the support base is closely combined with the other side of the thin wall, and the B15-A fireproof bulkhead box is fixed on the thin wall; the circuit device is fixedly connected with the B15-A fireproof bulkhead box through the cooperation of the fixed screw and the inner fixed hole groove.

8. The B15-A fire rated bulkhead box of claim 7, wherein: The box inner shell is provided with one or more partition plates, the partition plates are fixed in the box inner shell, the partition plates divide the groove cavity of the box inner shell, and the partition plates are provided with clamping plate reserved holes.

9. A B15-A fire rated bulkhead box according to claim 1 or claim 6, characterised in that: The box inner shell is provided with one or more partition plates, the partition plates are composed of short clamping plates and long clamping plates, the middle part of the short clamping plate is provided with a short plate clamping groove, the long clamping plate is provided with long plate clamping grooves at equal intervals, the short clamping plate and the long clamping plate are fixedly connected through the short plate clamping groove and the long plate clamping groove in the form of clamping, and the short clamping plate and the long clamping plate after being connected are flush with each other; the box inner shell is provided with a short plate groove and a long plate groove, the short plate groove is fixedly connected with the short clamping plate in the form of clamping, so that the short clamping plate is fixed in the box inner shell, the long plate groove is fixedly connected with the long clamping plate in the form of clamping, so that the long clamping plate is fixed in the box inner shell, and the partition plates divide the groove cavity of the box inner shell.

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