CN216390148U

CN216390148U - Fireproof power distribution cabinet

Info

Publication number: CN216390148U
Application number: CN202122612956.5U
Authority: CN
Inventors: 冯振翔
Original assignee: Shandong Lutong Electromechanical Equipment Co ltd
Current assignee: Shandong Lutong Electromechanical Equipment Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-26
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses a fireproof power distribution cabinet which comprises a fireproof cabinet body, wherein the lower surface of the fireproof cabinet body is fixedly connected with a base, the inner wall of the fireproof cabinet body is rotatably connected with a cabinet door, the side surface of the fireproof cabinet body is provided with a heat dissipation opening, the inner top wall of the fireproof cabinet body is fixedly connected with a flame detector, the inner wall of the fireproof cabinet body is fixedly connected with a partition plate, the lower surface of the partition plate is fixedly connected with a fire extinguishing assembly, the inner bottom wall of the fireproof cabinet body is fixedly connected with a storage tank, and the inner top wall of the storage tank is fixedly connected with an electric cylinder for driving the fire extinguishing assembly. According to the fire-proof power distribution cabinet, whether fire happens in the fire-proof cabinet body is monitored through the flame detector, the fire signal is sent to the external controller, the external controller controls the electric cylinder to start, the fire extinguishing assembly is driven by the electric cylinder to carry out fire extinguishing work, the fire-proof cabinet body is sealed through the sealing assembly, the fire extinguishing efficiency is improved, and therefore the problem that great economic loss is caused due to the fact that a goods source cannot be put out in time is solved.

Description

Fireproof power distribution cabinet

Technical Field

The application relates to the technical field of power distribution cabinets, in particular to a fireproof power distribution cabinet.

Background

The switch board is assembled with switch equipment, measuring instruments, protective electric and auxiliary equipment in a closed or semi-closed metal cabinet according to the electric wiring requirement, is an important part for electric energy distribution, and plays an irreplaceable role in daily life and industrial construction.

The fire prevention of switch board is because the electrical components in the switch board can produce the heat at the moving in-process, along with thermal continuous increase, the heat of backlog can make the internal temperature of cabinet constantly rise, can lead to partial electrical components to damage when the high temperature, thereby lead to the emergence of conflagration, therefore the switch board need ventilate and dispel the heat to it, however current fire prevention switch board is many to adopting fire-proof material to make, only can prevent stretching of the intensity of a fire, can't in time put out its inside fire source, it is serious to make its inside components and parts damage, cause great economic loss.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fireproof power distribution cabinet to solve the problems in the background technology.

The embodiment of the application adopts the following technical scheme:

the utility model provides a switch board of fire prevention, includes the fire prevention cabinet body, the lower fixed surface of the fire prevention cabinet body is connected with the base, the inner wall of the fire prevention cabinet body rotates and is connected with the cabinet door, the thermovent has been seted up to the side of the fire prevention cabinet body, the interior roof fixedly connected with flame detector of the fire prevention cabinet body, the inner wall fixedly connected with baffle of the fire prevention cabinet body, the lower fixed surface of baffle is connected with the subassembly of putting out a fire, the interior diapire fixedly connected with holding vessel of the fire prevention cabinet body, the interior roof fixedly connected with of holding vessel is used for driving the electric jar of the subassembly of putting out a fire.

Preferably, the subassembly of putting out a fire includes the urceolus with baffle lower fixed surface is connected, one side difference fixedly connected with intake pipe and outlet duct of urceolus, the inner wall of urceolus is all run through to the one end of intake pipe and outlet duct, the intake pipe is kept away from the one end of urceolus and the lower fixed surface of baffle and is connected and run through the upper surface of baffle, the one end that the urceolus was kept away from to the outlet duct is external with the inner wall fixed connection of the fireproof cabinet body and extend to the fireproof cabinet, the fixed surface of intake pipe is connected with the check valve that admits air, the fixed surface of outlet duct is connected with the check valve that gives vent to anger.

Preferably, the inner wall fixedly connected with apron of urceolus, one side difference fixedly connected with inlet pipe and discharging pipe of apron, the opposite side of apron is all run through to the one end of inlet pipe and discharging pipe, the inlet pipe is kept away from the one end of apron and the last fixed surface of holding vessel and is connected and run through the interior roof of holding vessel, the one end of apron and the inner wall fixed connection of the fireproof cabinet body are kept away from to the discharging pipe, the fixed surface of inlet pipe is connected with the feeding check valve, the fixed surface of discharging pipe is connected with ejection of compact check valve.

Preferably, the fire extinguishing channel is opened with the corresponding position of discharging pipe in the inner wall of the fire prevention cabinet body, the interior roof of the fire prevention cabinet body is run through to the fire extinguishing channel, and the discharging pipe is linked together with the fire extinguishing channel, the inner wall fixedly connected with nozzle of fire extinguishing channel.

Preferably, the inner wall of the outer cylinder is connected with a piston in a sliding manner, one side of the piston is fixedly connected with a push handle, one side of the cover plate is provided with a sliding hole, the surface of the push handle is connected with the inner wall of the sliding hole in a sliding manner, one end of the push handle, far away from the piston, is fixedly connected with a connecting rod, and one side of the connecting rod is fixedly connected with the output end of the electric cylinder.

Preferably, the inside of the fireproof cabinet body is provided with a sealing assembly, the sealing assembly comprises a concave slideway arranged inside the fireproof cabinet body, the inner wall of the concave slideway is connected with a sealing plate in a sliding manner, the sealing plate corresponds to the position of the heat dissipation port, the back of the sealing plate is fixedly connected with the same connecting rod, the back of the connecting rod is connected with the inner wall of the concave slideway in a sliding manner, and the lower surface of the connecting rod is connected with a supporting rod in a sliding manner.

Preferably, the inner wall of the fireproof cabinet body is provided with a right-angle groove, the right-angle groove is communicated with the concave slideway, the inner wall of the right-angle groove is connected with a sliding rod in a sliding manner, and one end of the sliding rod is fixedly connected with the front surface of the supporting rod.

Preferably, the back of the connecting rod is fixedly connected with a fixing rod, and the height of the fixing rod is equal to that of the sliding rod.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

firstly, in the utility model, the fire detector monitors whether fire is in the fireproof cabinet body, a fire signal is sent to an external controller, the external controller controls the electric cylinder to start, the fire extinguishing component is isolated through the partition plate to avoid the influence of fire, the output end of the electric cylinder drives the connecting rod to move to further drive the push handle to move, further the piston is driven to slide along the inner wall of the outer cylinder, air above the partition plate in the fireproof cabinet body continuously enters the left space of the piston in the outer cylinder through the air inlet pipe through the matching of the air inlet pipe, the air outlet pipe, the air inlet one-way valve and the air outlet one-way valve and is discharged out of the fireproof cabinet body through the air outlet pipe, and the fire extinguishing agent in the storage tank continuously enters the right space of the piston in the outer cylinder through the inlet pipe and enters the fire extinguishing channel through the discharge pipe through the matching of the inlet pipe, the discharge pipe, the feed one-way valve and the discharge one-way valve, and then the fire is extinguished through the spraying of the nozzle, so that the problem that a great economic loss is caused by the fact that a goods source cannot be timely put out is solved.

Secondly, in the utility model, the fixing rod is driven to move through the movement of the connecting rod, so that the fixing rod pushes the sliding rod, so that the sliding rod moves from the horizontal section of the right-angle groove to the vertical section of the right-angle groove, the supporting rod is driven to move through the sliding rod, and under the action of the gravity of the sliding rod, the sliding rod slides downwards along the vertical section of the right-angle groove, so that the supporting rod moves downwards, so that the connecting rod moves downwards, so that the sealing plate moves downwards to seal the heat dissipation port, so that the fireproof cabinet body forms a sealing space, the fire extinguishing efficiency is improved, and the fireproof power distribution cabinet has a quick fire extinguishing effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a diagram: the utility model is a schematic three-dimensional structure;

FIG. 2 is a diagram of: the structure of the interior of the fireproof cabinet body is shown schematically;

FIG. 3 is a diagram of: the fire extinguishing assembly is a three-dimensional (sectional view of a fire-proof cabinet body) structure schematic diagram;

FIG. 4 is a diagram of: FIG. 3 is a schematic view of the fracture structure of the present invention;

FIG. 5 is a diagram: the cross-sectional structure of the outer cylinder of the utility model is shown schematically;

FIG. 6 is a diagram of: the sealing assembly of the utility model has a three-dimensional (sectional view of a fireproof cabinet) structure;

FIG. 7 is a diagram of: the utility model discloses a schematic front view structure diagram of a fireproof cabinet body;

FIG. 8 is a diagram of: the sectional structure of the fireproof cabinet body of the utility model along the line A-A in FIG. 7 is schematically illustrated;

FIG. 9 is a diagram of: the enlarged structure of the utility model at B in FIG. 8 is schematically shown.

In the figure: 1. a fire-proof cabinet body; 2. a cabinet door; 3. a heat dissipation port; 4. a flame detector; 5. a partition plate; 6. a fire extinguishing assembly; 601. an outer cylinder; 602. an air inlet pipe; 603. an air outlet pipe; 604. an air inlet check valve; 605. an air outlet one-way valve; 606. a cover plate; 607. a feed pipe; 608. a discharge pipe; 609. a feed check valve; 610. a discharge one-way valve; 611. a fire extinguishing passage; 612. a nozzle; 613. a piston; 614. a push handle; 615. a connecting rod; 7. a storage tank; 8. an electric cylinder; 9. a seal assembly; 901. a sealing plate; 902. a connecting rod; 903. a support bar; 904. a slide bar; 905. and (5) fixing the rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 9, the present invention provides a technical solution for a fire-proof power distribution cabinet:

the utility model provides a switch board of fire prevention, including the fire prevention cabinet body 1, the lower fixed surface of the fire prevention cabinet body 1 is connected with the base, the inner wall of the fire prevention cabinet body 1 rotates and is connected with cabinet door 2, thermovent 3 has been seted up to the side of the fire prevention cabinet body 1, the interior roof fixedly connected with flame detector 4 of the fire prevention cabinet body 1, the inner wall fixedly connected with baffle 5 of the fire prevention cabinet body 1, the lower fixed surface of baffle 5 is connected with fire extinguishing components 6, the interior bottom wall fixedly connected with holding vessel 7 of the fire prevention cabinet body 1, the interior roof fixedly connected with of holding vessel 7 is used for driving the electricity jar 8 of fire extinguishing components 6.

Specifically, the part of the fire-proof cabinet body 1, which is provided with components, is separated from the fire-extinguishing assembly 6 through the partition plate 5, so that the components are prevented from being ignited to influence the work of the fire-extinguishing assembly 6 along with the spread of fire, a fire-extinguishing agent is stored through the storage tank 7, the fire-extinguishing agent is preferably dry powder or carbon dioxide, whether the fire is ignited in the fire-proof cabinet body 1 is monitored through the flame detector 4, a fire-igniting signal is sent to AN external controller, the external controller controls the electric cylinder 8 to start, the fire-extinguishing assembly 6 is driven to work through the electric cylinder 8, the type of the flame detector 4 is preferably JTGB-UF-7609/X, and the type of the electric cylinder 8 is preferably LEY25DC-50B-S1AN 3.

In the utility model, as shown in fig. 3-5, the fire extinguishing assembly 6 comprises an outer cylinder 601 fixedly connected with the lower surface of a partition board 5, one side of the outer cylinder 601 is fixedly connected with an air inlet pipe 602 and an air outlet pipe 603 respectively, one end of the air inlet pipe 602 and one end of the air outlet pipe 603 both penetrate through the inner wall of the outer cylinder 601, one end of the air inlet pipe 602, which is far away from the outer cylinder 601, is fixedly connected with the lower surface of the partition board 5 and penetrates through the upper surface of the partition board 5, one end of the air outlet pipe 603, which is far away from the outer cylinder 601, is fixedly connected with the inner wall of the fireproof cabinet 1 and extends to the outside of the fireproof cabinet 1, the surface of the air inlet pipe 602 is fixedly connected with an air inlet check valve 604, and the surface of the air outlet pipe 603 is fixedly connected with an air outlet check valve 605.

Inner wall fixedly connected with apron 606 of urceolus 601, one side difference fixedly connected with inlet pipe 607 and discharging pipe 608 of apron 606, the opposite side of apron 606 is all run through to the one end of inlet pipe 607 and discharging pipe 608, the one end of apron 606 and the last fixed surface of holding vessel 7 are kept away from to the inlet pipe 607 and the interior roof of holding vessel 7 is run through, the one end of apron 606 and the inner wall fixed connection of the fire prevention cabinet body 1 are kept away from to discharging pipe 608, the fixed surface of inlet pipe 607 is connected with feeding check valve 609, the fixed surface of discharging pipe 608 is connected with ejection of compact check valve 610.

The inner wall of the fire-proof cabinet body 1 is provided with a fire extinguishing channel 611 at a position corresponding to the discharge pipe 608, the fire extinguishing channel 611 penetrates through the inner top wall of the fire-proof cabinet body 1, the discharge pipe 608 is communicated with the fire extinguishing channel 611, and the inner wall of the fire extinguishing channel 611 is fixedly connected with a nozzle 612.

The inner wall of the outer cylinder 601 is connected with a piston 613 in a sliding manner, one side of the piston 613 is fixedly connected with a push handle 614, one side of the cover plate 606 is provided with a sliding hole, the surface of the push handle 614 is connected with the inner wall of the sliding hole in a sliding manner, one end, far away from the piston 613, of the push handle 614 is fixedly connected with a connecting rod 615, and one side of the connecting rod 615 is fixedly connected with the output end of the electric cylinder 8.

Specifically, the output end of the electric cylinder 8 drives the connecting rod 615 to move, and further drives the push handle 614 to move, and further drives the piston 613 to slide along the inner wall of the outer cylinder 601, through the cooperation of the air inlet pipe 602, the air outlet pipe 603, the air inlet check valve 604 and the air outlet check valve 605, the air above the partition 5 in the fireproof cabinet 1 continuously enters the left space of the piston 613 in the outer cylinder 601 through the air inlet pipe 602, and is discharged out of the fireproof cabinet 1 through the air outlet pipe 603, through the cooperation of the air inlet pipe 607, the air outlet pipe 608, the air inlet check valve 609 and the air outlet check valve 610, the fire extinguishing agent in the storage tank 7 continuously enters the right space of the piston 613 in the outer cylinder 601 through the air inlet pipe 607, and enters the fire extinguishing channel 611 through the air outlet pipe 608, and is sprayed out through the nozzle 612 for fire extinguishing, the flow direction of the air inlet check valve 604 is that the space above the partition 5 in the fireproof cabinet 1 flows to the left space of the piston 613 in the outer cylinder 601, the flow direction of the air outlet check valve 605 is that the left space of the piston 613 in the outer cylinder 601 flows to the outside of the fire-proof cabinet 1, the flow direction of the feeding check valve 609 is that the storage tank 7 flows to the right space of the piston 613 in the outer cylinder 601, and the flow direction of the discharging check valve 610 is that the right space of the piston 613 in the outer cylinder 601 flows to the fire extinguishing passage 611.

In the utility model, as shown in fig. 6-9, a sealing assembly 9 is arranged inside the fire-proof cabinet body 1, the sealing assembly 9 comprises a concave slideway arranged inside the fire-proof cabinet body 1, the inner wall of the concave slideway is connected with a sealing plate 901 in a sliding manner, the sealing plates 901 correspond to the positions of the heat dissipation openings 3, the back surfaces of the two sealing plates 901 are fixedly connected with a same connecting rod 902, the back surfaces of the connecting rods 902 are connected with the inner wall of the concave slideway in a sliding manner, and the lower surface of the connecting rod 902 is connected with a supporting rod 903 in a sliding manner.

The right angle groove has been seted up to the inner wall of the fire prevention cabinet body 1, and the right angle groove is linked together with concave type slide, and the inner wall sliding connection in right angle groove has slide bar 904, the front fixed connection of one end and bracing piece 903 of slide bar 904.

The back of the connecting rod 615 is fixedly connected with a fixing rod 905, and the height of the fixing rod 905 is equal to that of the sliding rod 904.

It is specific, move through connecting rod 615 and drive dead lever 905 and remove, make dead lever 905 promote slide bar 904, make slide bar 904 remove to the vertical section in right angle groove from the horizontal segment in right angle groove, it removes to drive bracing piece 903 through slide bar 904, and under its self action of gravity, the vertical section lapse along the right angle groove of slide bar 904 that makes, and then make bracing piece 903 lapse, and then make connecting rod 902 lapse, and then make closing plate 901 lapse close thermovent 3, and then make the cabinet of preventing fires 1 formation confined space, the efficiency of putting out a fire is improved.

The working principle is as follows: when fire occurs in the use process of the fireproof power distribution cabinet, in a normal state, the right space of the piston 613 in the outer cylinder 601 is filled with a fire extinguishing agent, the flame detector 4 monitors that fire occurs in the fireproof cabinet body 1, a fire signal is sent to an external controller, the external controller controls the electric cylinder 8 to start, the output end of the electric cylinder 8 drives the connecting rod 615 to move rightwards, the connecting rod 615 drives the push handle 614, the push handle 614 drives the piston 613 to slide rightwards along the inner wall of the outer cylinder 601, so that the left space of the piston 613 in the outer cylinder 601 is increased, the internal pressure of the piston 613 is reduced, air above the partition plate 5 in the fireproof cabinet body 1 enters the left space of the piston 613 in the outer cylinder 601 through the air inlet pipe 602, meanwhile, the piston 613 moves, the right space of the piston 613 in the outer cylinder 601 is reduced, the internal pressure of the piston 613 is increased, the fire extinguishing agent in the fire extinguishing channel 611 is injected through the discharge pipe 608, and is sprayed out through the nozzle 612 to extinguish fire, in the process, the connecting rod 615 moves to drive the fixing rod 905 to move, so that the fixing rod 905 pushes the sliding rod 904, the sliding rod 904 moves from the horizontal section of the right-angle groove to the vertical section of the right-angle groove, the supporting rod 903 is driven to move by the sliding rod 904, the sliding rod 904 slides downwards along the vertical section of the right-angle groove under the action of the gravity of the sliding rod 904, the supporting rod 903 further moves downwards, the connecting rod 902 further moves downwards, the sealing plate 901 further moves downwards to seal the heat dissipation opening 3, the fireproof cabinet 1 further forms a sealed space, the fire extinguishing efficiency is improved, when the output end of the electric cylinder 8 drives the connecting rod 615 to move leftwards, the space on the left side of the piston 613 in the outer cylinder 601 becomes small, the pressure becomes large, the air inside the fireproof cabinet 1 is discharged out through the air outlet pipe 603, meanwhile, the space on the right side of the piston 613 in the outer cylinder 601 becomes large and the small, the fire extinguishing agent in the storage tank 7 is sucked through the inlet pipe 607, so, constantly with the interior air escape of the cabinet body of preventing fires 1 and pour into the fire extinguishing agent and put out a fire, through slide bar 904, can stir the horizontal segment to the right angle groove again with it, make closing plate 901 reset and open thermovent 3 to the switch board that makes this fire prevention has solved the problem that can't in time put out the goods source and cause great economic loss.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides a switch board of fire prevention, includes the fire prevention cabinet body (1), the lower fixed surface of the fire prevention cabinet body (1) is connected with the base, the inner wall of the fire prevention cabinet body (1) rotates and is connected with cabinet door (2), thermovent (3), its characterized in that have been seted up to the side of the fire prevention cabinet body (1): the fire prevention cabinet is characterized in that the inner top wall of the fire prevention cabinet body (1) is fixedly connected with a flame detector (4), the inner wall of the fire prevention cabinet body (1) is fixedly connected with a partition plate (5), the lower surface of the partition plate (5) is fixedly connected with a fire extinguishing assembly (6), the inner bottom wall of the fire prevention cabinet body (1) is fixedly connected with a storage tank (7), and the inner top wall of the storage tank (7) is fixedly connected with an electric cylinder (8) used for driving the fire extinguishing assembly (6).

2. Fire-resistant power distribution cabinet according to claim 1, characterized in that: the fire extinguishing assembly (6) comprises an outer barrel (601) fixedly connected with the lower surface of a partition plate (5), one side of the outer barrel (601) is fixedly connected with an air inlet pipe (602) and an air outlet pipe (603) respectively, one ends of the air inlet pipe (602) and the air outlet pipe (603) all penetrate through the inner wall of the outer barrel (601), one end of the air inlet pipe (602) far away from the outer barrel (601) is fixedly connected with the lower surface of the partition plate (5) and penetrates through the upper surface of the partition plate (5), one end of the air outlet pipe (603) far away from the outer barrel (601) is fixedly connected with the inner wall of a fireproof cabinet body (1) and extends out of the fireproof cabinet body (1), the surface of the air inlet pipe (602) is fixedly connected with an air inlet one-way valve (604), and the surface of the air outlet pipe (603) is fixedly connected with an air outlet one-way valve (605).

3. Fire-resistant power distribution cabinet according to claim 2, characterized in that: the inner wall fixedly connected with apron (606) of urceolus (601), one side difference fixedly connected with inlet pipe (607) and discharging pipe (608) of apron (606), the opposite side of apron (606) is all run through to the one end of inlet pipe (607) and discharging pipe (608), the one end of apron (606) and the interior roof of last fixed surface connection and running through holding vessel (7) of holding vessel (7) are kept away from in inlet pipe (607), the one end of apron (606) and the inner wall fixed connection of the fire prevention cabinet body (1) are kept away from in discharging pipe (608), the fixed surface of inlet pipe (607) is connected with feeding check valve (609), the fixed surface of discharging pipe (608) is connected with ejection of compact check valve (610).

4. A fire-resistant electrical distribution cabinet according to claim 3, characterized in that: the fire extinguishing channel (611) is arranged at the position, corresponding to the discharge pipe (608), of the inner wall of the fire prevention cabinet body (1), the fire extinguishing channel (611) penetrates through the inner top wall of the fire prevention cabinet body (1), the discharge pipe (608) is communicated with the fire extinguishing channel (611), and the nozzle (612) is fixedly connected to the inner wall of the fire extinguishing channel (611).

5. A fire-resistant electrical distribution cabinet according to claim 3, characterized in that: the inner wall sliding connection of urceolus (601) has piston (613), one side fixedly connected with of piston (613) pushes away handle (614), the slide opening has been seted up to one side of apron (606), and pushes away the surface of handle (614) and the inner wall sliding connection of slide opening, the one end fixedly connected with connecting rod (615) of piston (613) are kept away from to push away handle (614), one side of connecting rod (615) and the output fixed connection of electric jar (8).

6. Fire-resistant power distribution cabinet according to claim 1, characterized in that: the fireproof cabinet is characterized in that a sealing assembly (9) is arranged inside the fireproof cabinet body (1), the sealing assembly (9) comprises a concave slideway arranged inside the fireproof cabinet body (1), a sealing plate (901) is connected to the inner wall of the concave slideway in a sliding mode, the positions of the sealing plate (901) and the heat dissipation port (3) correspond to each other, the back faces of the two sealing plates (901) are fixedly connected with the same connecting rod (902), the back face of the connecting rod (902) is connected with the inner wall of the concave slideway in a sliding mode, and the lower surface of the connecting rod (902) is connected with a supporting rod (903) in a sliding mode.

7. Fire-resistant switch board of claim 6, characterized in that: the fire prevention cabinet body (1) inner wall has been seted up the right angle groove, and the right angle groove is linked together with concave type slide, the inner wall sliding connection in right angle groove has slide bar (904), the positive fixed connection of the one end of slide bar (904) and bracing piece (903).

8. A fire-resistant power distribution cabinet according to claim 5, characterized in that: the back fixedly connected with dead lever (905) of connecting rod (615), dead lever (905) and slide bar (904) highly equal.