B15-D fireproof bulkhead box

Abstract

The utility model belongs to the technical field of marine flame-retardant equipment, and relates to a B15-D fireproof bulkhead box. Comprising a box outer shell, a box inner shell, a supporting base, preformed holes, fastening screws, a metal clamping plate and the like, the four or more preformed holes are formed in the long side wall of the upper portion of the box outer shell, the box outer shell is fixedly connected with the box inner shell, the supporting base is arranged on the lower portion of the box inner shell, and two or more sets of inner fixing hole grooves are axially symmetrically formed in the two long side walls in the box inner shell; the fixing screw is in threaded connection with the inner fixing hole groove; two groups of outer fixing grooves are axially symmetrically formed in the middles of the short side walls and the long side walls in the box inner shell respectively; the fastening screws penetrate into the outer fixing grooves and are sequentially connected with the metal clamping plates and the buckling fastening plates, and the box outer shell and the box inner shell are made of fireproof flame-retardant materials in an injection molding mode. The device expands the space of the internal groove cavity, is suitable for the switching of a large number of lines, is stable in structure, is firm in installation, is resistant to high temperature, is excellent in flame-retardant performance, is high in safety, and can be applied to cabin walls, indoor partition thin walls, temporary housing walls and other thin-wall places.

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-D 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 enough 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 of the ship is divided into A, B and C levels. The structural fireproof design needs to meet the fire resistance level requirements of the ship fireproof area and the cabin fireproof boundary. Thermal conductivity is the main indicator to measure the performance of fire-resistant materials, and it 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 environment is harsh, the humidity is high, the salt spray corrosion ability is strong, and the ship swings 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, is not firm, cannot effectively prevent fire spread after ignition, and has high production cost. When there are many lines, the conventional junction box cavity is small, which is difficult to meet the use demand, and the fixed and separated junction box cavity cannot be adjusted according to the application demand, which is not convenient to apply. SUMMARY

[0006] The purpose of the present application is to overcome the shortcomings of the prior art, and to design a B15-D fireproof bulkhead box which has poor high temperature resistance, fixed box cavity space layout and is not firm in installation, while ensuring convenient use.

[0007] In order to achieve the above-mentioned purpose, the application relates to a B15-D fireproof bulkhead box, and the main structure comprises a box shell, a box inner shell, a supporting base, a reserved hole, a fastening screw, a metal clamping plate, an outer fixing groove, a buckle fastening plate, an inner fixing hole groove and a fixing 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, four or more reserved holes are arranged on the upper part of the long side wall of the box shell, the box shell is nested and arranged outside the box inner shell, and the supporting base is arranged at the lower part of the box inner shell; two groups of inner fixing hole grooves are arranged on the two long side walls of the box inner shell in an axisymmetric mode; due to the large volume of the box groove cavity, the installation stability is improved, and one group of outer fixing grooves is arranged on the middle part of the short side wall and the middle part of the long side wall of the box inner shell in an axisymmetric mode; the B15-D fireproof bulkhead box is fixed in the thin wall through the combination structure of the supporting base, the fastening screw, the metal clamping plate, the outer fixing groove and the buckle fastening plate; the B15-D fireproof bulkhead box is fixedly connected with the circuit device through the cooperation of the fixing screw and the inner fixing hole groove; according to the number of line access, the box inner shell is not provided with a partition plate or is provided with a partition plate capable of flexibly adjusting the space layout of the box inner shell groove cavity.

[0008] The outer fixing groove penetrates out of the box inner shell and communicates with the box shell, and the outer fixing groove is composed of a lower end cylindrical cavity and a semicylindrical cavity which is recessed in the upper part of the box shell; the fastening screw penetrates into the outer fixing 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 the shape 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 is threadedly installed on the front end of the fastening screw, 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 fixing groove is provided with a plate fixing groove at the front end, and the plate fixing groove is located at the top end of the box shell.

[0009] The supporting base is composed of four end angles and an arc edge between every two end angles, the four protruding end angles of the supporting base increase the contact area of the box body and the thin wall, and the installation is more stable; the fixing hole groove is in the shape of a cylinder as a whole, and the fixing screw is threadedly connected with the inner fixing hole groove.

[0010] The side wall of the box shell is also provided with an expansion expansion groove, which provides a certain expansion space when an explosion occurs in the B15-D fireproof bulkhead box, and reduces the risk of explosion and splashing of the B15-D fireproof bulkhead box.

[0011] In order to improve the stability and strength of the B15-D fireproof bulkhead box, the reinforcing ribs are symmetrically arranged on the top edge of the box inner shell.

[0012] The box shell and the box inner shell of the B15-D fireproof bulkhead box are made of fireproof and flame-retardant materials by injection molding. The box shell is provided with a grid composed of two or more interwoven aluminum strips.

[0013] Further, in order to freely adjust the partition in the box cavity of the B15-D fire bulkhead box according to the wiring needs, and reasonably plan the slot cavity application of the B15-A fire bulkhead box, the box inner shell is provided with more than one partition plate, the partition plate is composed of a short card plate and a long card plate, the middle part of the short card plate is provided with a short plate clamping groove, the short card plate and the long card plate are fixedly connected by clamping the short plate clamping groove, and the upper end surfaces of the connected short card plate and long card plate are flush; the long card plate is fixed inside the box inner shell, and the fixing position of the short card plate can be freely adjusted.

[0014] Further, a set of clamping devices is symmetrically arranged on the two sides of the short card plate, the clamping device is provided with a spring box, the spring box is fixed on the side wall of the short card plate, a spring is installed in the inner chamber of the spring box, the front end of the spring abuts against the front wall of the spring box, the rear end of the spring abuts against and is connected with the front end of the push-pull plate, the push-pull plate extends out of the slot opening arranged at the rear end of the spring box, the upper and lower side walls of the spring box are respectively provided with push-pull slots, and the push-pull rod is connected with the push-pull plate by penetrating through the push-pull slots; the rear end of the push-pull plate is fixedly connected with the middle part of the longitudinal plate, the upper and lower ends of the longitudinal plate are symmetrically provided with transverse abutting plates, the transverse abutting plates are limited in the slot openings of the limiting frame, the limiting frame is fixed on the side wall of the short card plate, the rear end of the transverse abutting plate abuts against the side wall of the long card plate; the short card plate and the long card plate are fixed by the friction force between the rear end of the transverse abutting plate and the side wall of the long card plate; the rear half of the transverse abutting plate is further provided with a longitudinal abutting plate, the longitudinal abutting plate on the upper side of the clamping device abuts against the upper wall of the box inner shell, and the longitudinal abutting plate on the lower side of the clamping device abuts against the wall of the connected circuit device.

[0015] Further, in order to simplify the structure, the box inner shell is provided with more than one partition plate, the partition plate is fixed in the box inner shell, and the slot cavity of the box inner shell is evenly divided by the partition plate; when a plurality of lines enter the B15-D fire bulkhead box for connection, the partition plate can reduce the mutual influence of the plurality of connection lines and improve safety; the partition plate is provided with a clamping plate reserved hole.

[0016] The technical effects achieved by the application are:

[0017] (1) The B15-D fire bulkhead box expands the space of the box cavity, and the box cavity space can be adjusted according to the needs of the number of wiring. The unique structure design improves the structural stability and installation stability, and 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.

[0018] (2) The combination design of the fastening screw, the metal clamping plate, the outer fixed slot and the fastening plate tightly locks the product and does not easily loosen; the middle sharp iron sheet of the metal clamping plate better increases the locking force of the product, so that the product is not easily loosened and fallen under the change of external environment.

[0019] (3) The integrated box shell and the box shell combination 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 inside of the box enhance the mechanical strength, the wiring reserved holes improve the safety, the overall design meets the functionality while also considering the aesthetics, thereby providing a safe, efficient, durable and beautiful electrical installation solution for users. The B15-D fireproof bulkhead box can be applied to thin-walled places such as ship bulkheads, indoor partition thin walls, temporary housing walls (construction site sheds, offices, etc.), and has a wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an external structure principle schematic view of the B15-D fireproof bulkhead box involved in the present application.

[0021] Figure 2 It is an internal structure principle schematic view of the B15-D fireproof bulkhead box involved in the present application.

[0022] Figure 3 It is an installation schematic view of the B15-D fireproof bulkhead box involved in the present application.

[0023] Figure 4 It is a schematic view of a partition plate involved in the present application.

[0024] Figure 5 It is a schematic view of an adjustable partition plate involved in the present application. DETAILED DESCRIPTION

[0025] The present application will be further described below by means of examples and in conjunction with the drawings.

[0026] Example 1

[0027] The B15-D fireproof bulkhead box involved in the present embodiment comprises a box shell 1, a box inner shell 2, a supporting base 3, a reinforcing rib 4, an expansion and contraction groove 5, a reserved hole 6, a fixed plate groove 7, a fastening screw 8, a metal clamping plate 9, an outer fixing groove 10, a buckle fixing plate 11, an inner fixing hole groove 12, and a fixing screw 13. Figure 1 As shown in the drawings, 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 upper part of the box shell 1 is provided with four or more reserved holes 6, and the reserved holes 6 are used for passing through wires after being punched through; the box shell 1 is nested and fixedly connected outside the box inner shell 2, and the box inner shell 2 is integrally provided with a supporting base 3 at the lower part. 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 of the box body with the thin wall (such as the cabin wall), and the installation is more stable; two long side walls inside the box inner shell 2 are axially symmetrically provided with two groups of inner fixing hole grooves 12, 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; due to the large volume of the box groove cavity, the installation stability is increased, and a group of outer fixing grooves 10 are axially symmetrically provided in the middle of the short side wall and the middle of the long side wall inside the box inner shell 2; the outer fixing grooves 10 pass out of the box inner shell 2 and communicate 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 recessed in the upper middle of the box outer shell 1; the fastening screws 8 pass into the outer fixing grooves 10, the metal clamping plate 9 is sleeved on the front middle part of the fastening screw 8, one end of the 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 the metal clamping plate 9 is in the shape of a sharp tip, and the sharp tip 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 tip end of the metal clamping plate 9 penetrates into the thin wall to different degrees), the front end of the 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 front end of the outer fixing groove 10 is provided with a fixed plate groove 7, 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-D fireproof bulkhead box is packaged and transported, the fixed plate groove 7 fixes the buckle fastening plate 11 by relying on friction, and prevents the fastening screw 8, the metal clamping plate 9 and the buckle fastening plate 11 from moving greatly. Figure 1

[0028] The side wall of the box outer shell 1 is further provided with an expansion expansion groove 5, which provides a certain expansion space when an explosion occurs inside the B15-D fireproof bulkhead box, thereby reducing the risk of explosion and splashing of the B15-D fireproof bulkhead box.

[0029] In order to improve the stability and strength of the B15-D fireproof bulkhead box, a reinforcing rib 4 is symmetrically arranged at the top edge inside the box inner shell 2.

[0030] The B15-D fireproof bulkhead box is fixedly connected with the circuit device through the cooperation of the fixing screws 13 and the inner fixing hole grooves 12.

[0031] The box outer shell 1 and the box inner shell 2 of the B15-D fireproof bulkhead box are made of fireproof and flame-retardant materials by injection molding, the B15-D fireproof bulkhead box expands the internal groove cavity space and can be applied to a large number of line switching; the B15-D fireproof bulkhead 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.

[0032] Example 2: ​

[0033] The box shell 1 of the B15-D fireproof bulkhead box is provided with a mesh formed by interweaving two or more aluminum strips, which not only plays a role of preventing static electricity when the product is burning, but also tightly wraps the B15-D fireproof bulkhead box, reduces the burning dripping and the splashing of fragments after explosion of the B15-D fireproof bulkhead box, and increases the fire retardant effect;

[0034] Embodiment 3:

[0035] As shown in Figure 3 , the specific installation method of the B15-D fireproof bulkhead box in Embodiment 1 is as follows:

[0036] (1) Junction box fixing: a wall through groove is formed on a thin wall such as a cabin plate, an indoor partition thin wall, a temporary house (a construction site shed, an office, etc.), and the B15-D fireproof bulkhead box is installed in the wall through groove. The rotating fastening screw 8 is used to tightly combine the pointed end of the metal clamping plate 9 with one side of the thin wall, and the fastening plate 11 is used to limit and fix the metal clamping plate 9, so that the supporting base 3 is tightly combined with the other side of the thin wall, and the B15-D fireproof bulkhead box is fixed on the thin wall.

[0037] (2) Line introduction: according to the number of line access, the drill bit and other instruments are used to pass through the reserved hole 6 of the B15-D fireproof bulkhead box, and the pipeline is introduced into the internal groove of the B15-D fireproof bulkhead box through the reserved hole 6.

[0038] (3) Connection of circuit devices: the switches, plug-in sockets, lamps and other circuit devices are connected with the pipelines, and the circuit devices are fixedly connected with the B15-D fireproof bulkhead box through the fixed screw 13 and the internal fixed hole groove 12. In the thin wall circuit installation environment, the B15-D 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.

[0039] Embodiment 4:

[0040] Because the B15-D fireproof bulkhead box sometimes needs to access too many lines (such as a temporary office at a construction site, which needs to install network cables, circuit lines, etc.), in order to freely adjust the internal partition of the box cavity of the B15-D fireproof bulkhead box according to the needs of wiring, reasonably plan the application of the groove cavity of the B15-A fireproof bulkhead box, and reduce the influence between the lines; the B15-D fireproof bulkhead box in Embodiment 1 is as follows: Figure 5As shown, the box inner shell 2 is provided with more than one partition plate 14, the partition plate 14 is composed of a short card plate 16 and a long card plate 17, the short card plate 16 is provided with a short plate card slot in the middle part, the short card plate 16 and the long card plate 17 are fixedly connected by inserting the short plate card slot, and the upper end surfaces of the short card plate 16 and the long card plate 17 after connection are flush; the long card plate 17 is fixed inside the box inner shell 2, and the fixed position of the short card plate 16 can be freely adjusted.

[0041] A set of clamping devices is symmetrically arranged on both sides of the short card plate 16, the clamping device is provided with a spring box 18, the spring box 18 is fixed on the side wall of the short card plate 16, a spring is installed in the inner chamber of the spring box 18, the front end of the spring abuts against the front wall of the spring box 18, the rear end of the spring abuts against and connects with the front end of a push-pull plate 25, the push-pull plate 25 extends out of the notch set at the rear end of the spring box 18, the upper and lower side walls of the spring box 18 are respectively provided with a push-pull slot 19, a push-pull rod 20 passes through the push-pull slot 19 and is connected with the push-pull plate 25; the rear end of the push-pull plate 25 is fixedly connected with the middle part of a longitudinal plate 21, the upper and lower ends of the longitudinal plate 21 are symmetrically provided with a transverse abutting plate 24, the transverse abutting plate 24 is limited in the notch of a limiting frame 22, the limiting frame 22 is fixed on the side wall of the short card plate 16, and the rear end of the transverse abutting plate 24 abuts against the side wall of the long card plate 17; the short card plate 16 and the long card plate 17 are fixed through the friction force between the rear end of the transverse abutting plate 24 and the side wall of the long card plate 17; the rear half of the transverse abutting plate 24 is further provided with a longitudinal abutting plate 23, the longitudinal abutting plate 23 on the upper side of the clamping device abuts against the upper wall of the box inner shell 2, and the longitudinal abutting plate 23 on the lower side of the clamping device abuts against the wall of the connected circuit device.

[0042] When multiple lines enter the B15-D fireproof bulkhead box for connection, according to the number of lines connected to the B15-D fireproof bulkhead box, the push-pull rod 20 is pulled, so as to drive the push-pull plate 25 to move, the rear end of the transverse abutting plate 24 is separated from the side wall of the long card plate 17, the fixed position of the short card plate 16 and the long card plate 17 is adjusted, the partition layout of the groove cavity of the box inner shell 2 is changed, different wiring space requirements are adapted, the mutual influence of multiple connection lines can be reduced by the partition plate 14, and the safety of line connection is improved.

[0043] Embodiment 5:

[0044] The B15-D fireproof bulkhead box in embodiment 1 is provided with more than one partition plate 14 in the box inner shell 2, the partition plate 14 is fixed in the box inner shell 2, and the groove cavity of the box inner shell 2 is equally divided by the partition plate 14; when multiple lines enter the B15-D fireproof bulkhead box for connection, the mutual influence of multiple connection lines can be reduced by the partition plate 14, and the safety is improved; for example Figure 4As shown, the partition plate 14 is provided with a card plate reserved hole. When the line entering the internal slot cavity of the junction box needs to be divided into two branches for connection, the card plate reserved hole is punched through, so that one branch of the slot cavity on one side of the partition plate 14 passes through the card plate reserved hole to enter the slot cavity on the other side of the partition plate 14, and circuit connection is performed. The mutual influence of the connection line branches is reduced, and the safety is improved.

Claims

1. A B15-D fireproof bulkhead box characterized in that: The main structure comprises a box shell, a box inner shell, a support base, a reserved hole, a fastening screw, a metal clamping plate, an outer fixing groove, a buckle fastening plate, an inner fixing hole groove and a fixing 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, four or more reserved holes are arranged on the upper part of the long side wall of the box shell, the box shell is nested and installed outside the box inner shell, and the lower part of the box inner shell is provided with a support base; two groups of inner fixing hole grooves are arranged on the two long side walls inside the box inner shell in an axisymmetric manner; an outer fixing groove is arranged on the middle part of the short side wall inside the box inner shell and the middle part of the long side wall in an axisymmetric manner; the B15-D fireproof bulkhead box is fixed in the thin wall through the combination structure of the support base, the fastening screw, the metal clamping plate, the outer fixing groove and the buckle fastening plate; the B15-D fireproof bulkhead box is fixedly connected with the circuit device through the fixing screw and the inner fixing hole groove; according to the number of line connections, the box inner shell is not provided with a partition plate or is provided with a partition plate capable of flexibly adjusting the space layout of the groove cavity of the box inner shell.

2. The B15-D fire protected bulkhead box of claim 1, wherein: The outer fixing groove penetrates out of the box inner shell and communicates with the box shell, and the outer fixing groove is composed of a lower end cylindrical groove cavity and a semi-cylindrical groove cavity recessed in the upper part of the box shell; the fastening screw penetrates into the outer fixing 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 the shape of a sharp tip, the sharp tip end of the metal clamping plate can be combined more closely with the thin wall during installation, the buckle fastening plate is threadedly installed on the front end of the fastening screw, and the buckle fastening plate can abut against the through hole end of the metal clamping plate during installation, so that the metal clamping plate is fixed in position by the buckle fastening plate; the front end of the outer fixing groove is provided with a plate fixing groove, and the plate fixing groove is located at the top end of the box shell.

3. The B15-D fire protected bulkhead box of claim 2, wherein: The support base is composed of four end corners and an arc edge between every two end corners, the four protruding end corners of the support base increase the contact area of the box body and the thin wall, and installation is more stable; the fixing hole groove is in the shape of a cylinder as a whole, and the fixing screw is threadedly connected with the inner fixing hole groove.

4. The B15-D fire protected bulkhead box of claim 3, wherein: An expansion expansion groove is arranged on the side wall of the box shell.

5. The B15-D fire protection bulkhead box of claim 1, wherein: A reinforcing rib is symmetrically arranged on the top end edge inside the box inner shell.

6. The B15-D fire protection bulkhead box of claim 1, wherein: The box shell and the box inner shell are injection molded by using a fireproof and flame-retardant material; the box shell is provided with a grid composed of two or more interwoven aluminum strips.

7. A B15-D 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 plate is composed of a short clamping plate and a long clamping plate, a short plate clamping groove is arranged in the middle part of the short clamping plate, the short clamping plate and the long clamping plate are fixedly connected by being inserted into the short plate clamping groove, and the upper end surfaces of the connected short clamping plate and long clamping plate are flush; the long clamping plate is fixed inside the box inner shell, and the fixed position of the short clamping plate can be freely adjusted.

8. The B15-D fire protected bulkhead box of claim 7, wherein: The short clamping plate is symmetrically provided with a group of clamping devices on both sides, the clamping device is provided with a spring box, the spring box is fixed on the side wall of the short clamping plate, a spring is installed in the inner chamber of the spring box, the front end of the spring abuts against the front wall of the spring box, the rear end of the spring abuts against and is connected with the front end of a push-pull plate, the push-pull plate extends out of the notch provided at the rear end of the spring box, the upper and lower side walls of the spring box are respectively provided with push-pull notches, a push-pull rod passes through the push-pull notches and is connected with the push-pull plate; the rear end of the push-pull plate is fixedly connected with the middle part of a longitudinal plate, the upper and lower ends of the longitudinal plate are symmetrically provided with transverse abutting plates, the transverse abutting plates are limited in the notches of a limiting frame, the limiting frame is fixed on the side wall of the short clamping plate, the rear end of the transverse abutting plate abuts against the side wall of the long clamping plate; the short clamping plate and the long clamping plate are fixed through the friction force between the rear end of the transverse abutting plate and the side wall of the long clamping plate; the rear half of the transverse abutting plate is further provided with a longitudinal abutting plate, the longitudinal abutting plate on the upper side of the clamping device abuts against the upper wall of the inner shell of the box, and the longitudinal abutting plate on the lower side of the clamping device abuts against the wall of the connected circuit device.

9. The B15-D fire protection bulkhead box of claim 1, wherein: The inner shell of the box is provided with one or more than one partition plate, the partition plate is fixed in the inner shell of the box, the partition plate divides the groove cavity of the inner shell of the box, and the partition plate is provided with a clamping plate reserved hole.

Images