阅读说明：本技术 一种能够自启防火扩散的开关柜及其使用方法 (Switch cabinet capable of automatically starting and preventing fire diffusion and use method thereof ) 是由 赵如杰 荣勇 陈雨 李连召 刘泉 崔倩倩 荣庆玉 于 2021-08-27 设计创作，主要内容包括：本发明涉及开关柜技术领域,具体为一种能够自启防火扩散的开关柜及其使用方法,包括柜身,所述柜身内部的底面固定安装有嵌合底座。该种能够自启防火扩散的开关柜及其使用方法,通过热敏玻管感热碎裂自启隔火罩垫封闭柜身内部安装的设备,如火点位于设备上,可隔绝火势外延,并封闭区域加快内部氧气消耗,以此实现对火势的抑制和自熄灭,如火点位于柜身上,则可将火势与主要设备隔开,避免外部火情传递至电力设备上,可有效降低火情造成的损失,钢缆被嵌合矩环牵引拉动时可通过拉臂同步带动横条上移,并以此拉出卷轴表面收卷的亮色示警垫,以此通过示警色被动向外界示警,进一步提高人们得知的火情的速率。(The invention relates to the technical field of switch cabinets, in particular to a switch cabinet capable of being automatically started and preventing fire diffusion and a using method thereof. This kind of can be from starting cubical switchboard and application method that prevents fire diffusion, through the cracked equipment of isolating the internal installation of hood pad sealing cabinet body from opening of heat-sensitive glass tube sensible heat, if the fire point is located on the equipment, can isolate the fire trend epitaxy, and the closed area accelerates inside oxygen consumption, with this suppression and self-extinguishment to the fire trend of realization, if the fire point is located on the cabinet body, then can separate the fire trend and main equipment, avoid outside condition of a fire to transmit to power equipment on, can effectively reduce the loss that the condition of a fire caused, accessible single arm-drag synchronous drives the horizontal bar and shifts up when the steel cable is pulled by gomphosis square ring pulling, and with this pull out the bright color warning pad of spool surface rolling, with this through warning the bright color passive outside warning of warning, further improve the speed of the condition of a fire that people know.)

1. The utility model provides a can be from starting cubical switchboard that fire prevention spreads, includes cabinet body (1), its characterized in that: the bottom surface fixed mounting of cabinet body (1) inside has gomphosis base (2), the top of gomphosis base (2) is provided with equipment fixing frame (3), the top of cabinet body (1) is provided with gomphosis base (2) matched with closing mechanism (4), and the bottom of cabinet body (1) is provided with closing mechanism (4) matched with passive warning mechanism (5).

2. The switch cabinet capable of self-starting fire diffusion prevention according to claim 1, wherein: the closing mechanism (4) comprises a guiding edge (401), the guiding edge (401) is fixedly connected to the top of the inner side of the cabinet body (1), an embedded rectangular ring (402) matched with the embedded base (2) is slidably clamped inside the guiding edge (401), and a fire shield pad (403) is fixedly connected between the embedded rectangular ring (402) and the cabinet body (1);

the top of the cabinet body (1) is provided with two longitudinal grooves (404), the two longitudinal grooves (404) are symmetrically arranged along the top of the cabinet body (1), the front side and the rear side of the inner wall of each longitudinal groove (404) are rotatably connected with a medium shaft (405), the surface of each medium shaft (405) is fixedly sleeved with a wire wheel (406), each wire wheel (406) is provided with a steel cable (407), the number of the wire wheels (406) and the number of the steel cables (407) are four, the positions of the four wire wheels (406) and the positions of the steel cables (407) correspond to the four corners of the embedded rectangular ring (402), the inner wall of each longitudinal groove (404) is provided with wire holes (408) communicated with the inner part of the guide edge (401), and one end of each steel cable (407) penetrates through the wire holes (408) and is fixedly connected to the embedded rectangular ring (402);

the top of the cabinet body (1) and the interior of the longitudinal groove (404) are provided with active warning devices (409) matched with the medium shaft (405) and the steel cable (407), and the passive warning mechanism (5) is arranged at the bottom of the cabinet body (1) and matched with the steel cable (407);

the bottom of the side wall of the cabinet body (1) is fixedly connected with a convex seat (410), the convex seat (410) is rotatably connected with a rotating shaft (411), the surface of the rotating shaft (411) is respectively and fixedly connected with a limiting head (412) and a shifting arm (413), the surface of the rotating shaft (411) is movably sleeved with a torsion spring (414), and two ends of the torsion spring (414) are respectively clamped on the convex seat (410) and the shifting arm (413);

the number of the rotary shafts (411) is two, the two rotary shafts (411) are symmetrically arranged along the inner wall of the cabinet body (1), the front surface of the inner wall of the cabinet body (1) is rotatably connected with a connecting shaft (415) through a convex seat (410), and two ends of the connecting shaft (415) and the corresponding end of the rotary shaft (411) are fixedly sleeved with transmission gears (416) which are meshed with each other;

cable way (417) with vertical groove (404) intercommunication is seted up in the inside of cabinet body (1) lateral wall, dial arm (413), spiral shaft (411) and surface of cabinet body (1) and seted up slot (418) with cable way (417) intercommunication, the inside card insertion of slot (418) has heat-sensitive glass tube (419), the remaining one end of steel cable (407) is located cable way (417) and fixedly connected with lantern ring (420), lantern ring (420) cover card is on heat-sensitive glass tube (419).

3. The switch cabinet capable of self-starting fire diffusion prevention according to claim 2, characterized in that: the active warning device (409) comprises a housing (40901), the housing (40901) is fixed on the top surface of the cabinet body (1), a through groove (40902) which is communicated with the housing (40901) and a longitudinal groove (404) is formed in the surface of the cabinet body (1), the front side and the rear side of the inner wall of the housing (40901) are rotatably connected with a co-location shaft (40903), chain wheels (40904) are fixedly sleeved on the surfaces of the co-location shaft (40903) and a middle shaft (405), and the two chain wheels (40904) are in transmission connection through chains (40905);

the surface of the same-position shaft (40903) is clamped with a coil spring (40906), the surface of the outer end of the coil spring (40906) is welded with a convex hammer (40907), and the inner wall of the housing (40901) is welded with a bell plate (40908) matched with the convex hammer (40907).

4. The switch cabinet capable of self-starting fire diffusion prevention according to claim 2, characterized in that: the passive warning mechanism (5) comprises a winding cavity (501), the winding cavity (501) is arranged at the bottom of the cabinet body (1) and communicated with the cable channel (417), a winding shaft (502) is rotatably connected inside the winding cavity (501), and a bright warning pad (503) is wound on the surface of the winding shaft (502);

the outer end of bright color warning pad (503) runs through cabinet body (1) and outside fixedly connected with horizontal bar (504), guide way (505) with cableway (417) intercommunication is seted up on the surface of cabinet body (1), the surface of horizontal bar (504) and fixedly connected with single arm-drag (506) in guide way (505), single arm-drag (506) and the bottom fixed connection of steel cable (407).

5. The switch cabinet capable of self-starting fire diffusion prevention according to claim 2, characterized in that: the surface of the wire wheel (406) is provided with clamping grains matched with the steel cable (407), and the top of the longitudinal groove (404) is provided with a pressing wheel matched with the steel cable (407) and the clamping grains.

6. The switchgear cabinet capable of self-starting fire diffusion prevention according to claim 3, wherein: two ring clapboards are symmetrically and fixedly connected to the inner wall of the housing (40901) along the coil spring (40906).

7. The switch cabinet capable of self-starting fire diffusion prevention according to claim 4, wherein: the front end of the reel (502) penetrates through the cabinet body (1) and extends to the outside, and the front end of the reel (502) is fixedly sleeved with the rotary disc.

8. The use method of the self-starting fireproof diffusion switch cabinet according to claim 1, comprising the following steps:

s1, when the interior of the switch cabinet is on fire, the temperature inside the switch cabinet rises, the temperature sensing of the heat-sensitive glass tube (419) is broken, and when only one heat-sensitive glass tube (419) is started, the corresponding torsion spring (414) can drive the shifting arm (413) and the rotating shaft (411) to rotate upwards, and the connecting shaft (415) drives the other rotating shaft (411) to rotate upwards, so that other heat-sensitive glass tubes (419) are broken through bending, and the effective starting of relevant equipment is ensured;

s2, the steel cable (407) is unlocked and locked by a lantern ring (420) at the bottom end of the steel cable (407) due to the fragmentation of the heat-sensitive glass tube (419), the steel cable (407) cannot pull and lock the embedded rectangular ring (402), so that the embedded rectangular ring descends through self gravity, the folded fire barrier gasket (403) is pulled to expand downwards until the embedded rectangular ring (402) is embedded with the embedded base (2), and at the moment, the fire barrier gasket (403) can seal equipment arranged inside the cabinet body (1), if the fire point is positioned on the equipment, the fire extension can be isolated, the internal oxygen consumption is accelerated in the sealed area, so that the suppression and self-extinguishing of the fire are realized, if the fire point is positioned on the cabinet body (1), the fire can be isolated from main equipment, the external fire is prevented from being transmitted to electric equipment, and the loss caused by the fire can be effectively reduced;

s3, in the process of S2, the steel cable (407) is pulled by the embedded torque ring (402) to synchronously pull the wire wheel (406) and the middle shaft (405) to rotate, and the top homonymy shaft (40903) is driven to rotate by the chain (40905) so as to tighten the coil spring (40906) to apply strength, and the coil spring (40906) in the strength state continuously drives the convex hammer (40907) to move along the housing (40901) to stir and strike the bell plate (40908), so that people can be warned to the outside by the bell actively;

s4, in the process of the S2, the steel cable (407) is pulled by the embedded rectangular ring (402) to synchronously drive the cross bar (504) to move upwards through the pull arm (506), and the bright warning pad (503) on the surface of the reel (502) is pulled out, so that the warning is moved outwards through the warning color, and the speed of the fire known by people is further improved.

Technical Field

The invention relates to the technical field of switch cabinets, in particular to a switch cabinet capable of being automatically started and preventing fire diffusion and a using method thereof.

Background

The switch cabinet is an electrical device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch is arranged according to the requirement; such as meters, automatic controls, magnetic switches of motors, various alternating current contactors, and the like, some of which are also provided with high-voltage chambers and low-voltage chamber switch cabinets, and high-voltage buses, such as power plants, and some of which are also provided with low-frequency load shedding for keeping main equipment. The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system. The components in the switch cabinet mainly comprise a circuit breaker, a disconnecting switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like. The classification methods of the switch cabinets are various, for example, the switch cabinets can be divided into movable switch cabinets and fixed switch cabinets by the installation mode of the circuit breaker; or according to different cabinet body structures, the cabinet body can be divided into an open type switch cabinet, a metal closed switch cabinet and a metal closed armored switch cabinet; the high-voltage switch cabinet, the medium-voltage switch cabinet, the low-voltage switch cabinet and the like can be divided according to different voltage grades; the switch cabinet is mainly suitable for various occasions such as power plants, transformer substations, petrochemical industry, metallurgical steel rolling, light textile industry, factories and mines, residential districts, high-rise buildings and the like.

At present, most of common switch cabinets are simple iron sheet cabinets, and then relevant equipment is installed in a cabinet body. The inventor finds that the prior art has the following problems in the process of researching common switch cabinets: the existing switch cabinet lacks control measures aiming at fire conditions, and can not provide related warning information to the outside, so that the emergency rescue efficiency is influenced.

In view of the above, we propose a self-starting fire diffusion prevention switch cabinet and a using method thereof.

Disclosure of Invention

The invention aims to provide a self-starting fireproof diffusion switch cabinet and a using method thereof, and aims to solve the problems that the switch cabinet provided in the background art lacks control measures for fire conditions, cannot provide relevant warning information to the outside and influences emergency rescue efficiency. In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a can be from opening cubical switchboard of fire prevention diffusion, includes the cabinet body, the inside bottom surface fixed mounting of cabinet body has the gomphosis base, the top of gomphosis base is provided with equipment fixing frame, the top of cabinet body is provided with the closing mechanism with gomphosis base matched with, and the bottom of cabinet body is provided with the passive warning mechanism with closing mechanism matched with.

Preferably, the closing mechanism includes leading the position limit, leading position limit fixed connection in the inboard top of cabinet body, and the inside sliding card on leading the position limit has the gomphosis square ring with gomphosis base matched with, fixedly connected with separates the fire hood pad between gomphosis square ring and the cabinet body.

Vertical groove has been seted up at the top of cabinet body, the quantity in vertical groove is two, and two vertical grooves are the symmetry setting along the top of cabinet body, both sides are rotated around vertical inslot wall and are connected with the meson, the fixed surface of meson has cup jointed line wheel, the line takes turns to and is provided with the steel cable, the quantity of line wheel and steel cable is four, and the position of four line wheels and steel cable corresponds with the four corners of gomphosis square ring, the line hole with leading the inside intercommunication in position limit is seted up to the inner wall in vertical groove, the one end of steel cable is passed line hole fixed connection and is being on the gomphosis square ring.

The top of cabinet body and vertical inslot portion are provided with intermediary axle and steel cable matched with initiative warning device, passive warning mechanism sets up in the bottom of cabinet body and cooperatees with the steel cable.

The bottom fixedly connected with convex seat of cabinet body lateral wall, and rotate on the convex seat and be connected with the pivot, the surface difference fixed connection of pivot has spacing head and dials the arm, and the surface activity of pivot has cup jointed the torsional spring, the both ends difference joint of torsional spring is on convex seat and group arm.

The quantity of the pivot is two, two the pivot is the symmetry setting along the inner wall of cabinet body, and the front of cabinet body inner wall is rotated through the convex seat and is connected with even axle, the both ends of linking the axle all fixedly cup joints intermeshing's drive gear with the corresponding end of pivot.

The cable channel communicated with the longitudinal groove is formed in the side wall of the cabinet body, the surface of the shifting arm, the rotary shaft and the cabinet body is provided with a slot communicated with the cable channel, a heat-sensitive glass tube is inserted into the slot, the remaining end of the steel cable is positioned in the cable channel and is fixedly connected with a lantern ring, and the lantern ring is clamped on the heat-sensitive glass tube.

Preferably, the active warning device comprises a housing, the housing is fixed on the top surface of the cabinet body, the surface of the cabinet body is provided with a through groove for communicating the housing with the longitudinal groove, the front side and the rear side of the inner wall of the housing are rotatably connected with a synchronizing shaft, and the surface of the synchronizing shaft and the surface of the intermediate shaft are fixedly sleeved with chain wheels, two of which are connected through chain transmission.

The surface of the same-position shaft is clamped and sleeved with a coil spring, the surface of the outer end of the coil spring is welded with a convex hammer, and the inner wall of the housing is welded with a bell plate matched with the convex hammer.

Preferably, passive warning mechanism is including rolling up the chamber, it sets up in the bottom of cabinet body and communicates with the cableway to roll up the chamber, and rolls up the inside rotation in chamber and be connected with the spool, the surface rolling of spool has bright color to warn and fills up.

The outer end of the bright warning pad penetrates through the cabinet body and is fixedly connected with a cross bar outside, a guide groove communicated with the cable channel is formed in the surface of the cabinet body, a pull arm is fixedly connected to the surface of the cross bar in the guide groove, and the pull arm is fixedly connected with the bottom end of the steel cable.

Preferably, the surface of the wire wheel is provided with clamping lines matched with the steel cable, and the top of the longitudinal groove is provided with a pressing wheel matched with the steel cable and the clamping lines.

Preferably, two ring partition plates are fixedly connected to the inner wall of the housing symmetrically along the coil spring.

Preferably, the front end of the reel penetrates through the cabinet body and extends to the outside, and the front end of the reel is fixedly sleeved with the turntable.

A use method of a self-starting fireproof diffusion switch cabinet comprises the following steps:

s1, when the switch cabinet is on fire, the temperature inside the switch cabinet rises, the temperature sensing of the heat-sensitive glass tubes is broken, and when only a single heat-sensitive glass tube is started, the corresponding torsion spring can drive the shifting arm and the rotary shaft to rotate upwards and drive the other rotary shaft to rotate upwards through the connecting shaft, so that other heat-sensitive glass tubes are broken through bending, and the effective starting of related equipment is ensured.

S2, the fragmentation of the heat-sensitive glass tube makes the lantern ring at the bottom end of the steel cable lose the locking and unlock the steel cable, the steel cable can not pull the tabling square ring, the steel cable descends by self gravity, the tabling square ring in the pulling folding state is expanded downwards until the tabling square ring is tabling with the tabling base, at the moment, the tabling square ring can seal the equipment installed inside the cabinet body, if the fire point is located on the equipment, the fire extension can be isolated, and the enclosed area accelerates the internal oxygen consumption, so as to realize the inhibition and self-extinguishment of the fire, if the fire point is located on the cabinet body, the fire point can be isolated from the main equipment, the external fire is prevented from being transmitted to the power equipment, and the loss caused by the fire can be effectively reduced.

S3, in the process of S2, the steel cable is dragged by the embedded rectangular ring to synchronously pull the wire wheel and the middle shaft to rotate, the top homothetic shaft is driven to rotate through the chain, the coil spring is tightened to apply the force, the convex hammer is driven by the coil spring in the force applying state to move along the housing to stir and strike the bell plate, and the bell plate is actively warned to the outside through the bell, so that people can know the fire.

S4, in the process of S2, the steel cable is pulled by the embedded rectangular ring and can synchronously drive the horizontal bar to move upwards through the pull arm, and the bright warning pad on the surface of the scroll is pulled out, so that the steel cable is moved to the outside to warn through the warning color, and the rate of the fire known by people is further improved.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, by arranging the closing mechanism, the equipment arranged in the cabinet body can be sealed by the heat-sensitive glass tube thermal-cracking self-opening fire-isolating cover pad, if the fire point is positioned on the equipment, the fire extension can be isolated, and the internal oxygen consumption is accelerated in the sealed area, so that the fire can be inhibited and self-extinguished, if the fire point is positioned on the cabinet body, the fire can be isolated from the main equipment, the external fire is prevented from being transmitted to the power equipment, and the loss caused by the fire can be effectively reduced.

In the invention, the active warning device is arranged on the closing mechanism, so that the homonymous shaft is pulled to rotate by the traction of the steel cable, the coil spring is tightened to apply strength, the coil spring in the stressed state continuously drives the convex hammer to move along the housing to stir and strike the bell plate, and the bell is actively warned to the outside by the bell, so that people can know the fire condition conveniently.

In the invention, the passive warning mechanism linked with the closing mechanism is arranged, so that when the steel cable is pulled and pulled by the embedded rectangular ring, the cross bar can be synchronously driven to move upwards through the pull arm, and the bright warning pad wound on the surface of the scroll is pulled out, so that the warning is passively warned to the outside through the warning color, and the fire rate known by people is further improved.

According to the invention, the clamping lines are arranged on the wire wheel, and the pinch roller is arranged at the top of the longitudinal groove, so that better friction force can be generated between the wire wheel and the steel cable, and the wire wheel and the middle shaft can be ensured to effectively rotate along with the drawing of the steel cable.

In the invention, the turntable is arranged to facilitate the rotation of the scroll, so that maintenance personnel can conveniently wind the bright warning pad, pull the steel cable and the embedded torque to return to the original position and refill the thermosensitive glass tube for reuse.

Drawings

FIG. 1 is a front sectional view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of FIG. 1 at B in accordance with the present invention;

FIG. 4 is a partial front sectional view of the present invention;

FIG. 5 is a partial cross-sectional front view of FIG. 4 in accordance with the present invention;

FIG. 6 is a partial front cross-sectional view of FIG. 4 in accordance with the present invention;

fig. 7 is a top sectional view of the present invention.

In the figure: 1. a cabinet body; 2. a fitting base; 3. an equipment mounting rack; 4. a closing mechanism; 401. a guide edge; 402. embedding a rectangular ring; 403. a fire-proof cover pad; 404. a longitudinal slot; 405. an intermediate shaft; 406. a wire wheel; 407. a wire rope; 408. a wire hole; 409. an active warning device; 40901. a housing; 40902. a through groove; 40903. a co-located axis; 40904. a sprocket; 40905. a chain; 40906. a coil spring; 40907. a convex hammer; 40908. a weight plate; 410. a boss; 411. rotating the shaft; 412. a limiting head; 413. a shifting arm; 414. a torsion spring; 415. a connecting shaft; 416. a transmission gear; 417. a cableway; 418. a slot; 419. a heat-sensitive glass tube; 420. a collar; 5. a passive warning mechanism; 501. a roll cavity; 502. a reel; 503. a bright color warning pad; 504. a horizontal bar; 505. a guide groove; 506. and pulling the arm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by workers skilled in the art without any inventive work based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides a can be from opening cubical switchboard of fire prevention diffusion and application method thereof, includes cabinet body 1, and the bottom surface fixed mounting in cabinet body 1 has gomphosis base 2, and the top of gomphosis base 2 is provided with equipment fixing frame 3, and the top of cabinet body 1 is provided with closing mechanism 4 with gomphosis base 2 matched with, and the bottom of cabinet body 1 is provided with and closes mechanism 4 matched with passive warning mechanism 5.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, the closing mechanism 4 includes a guiding edge 401, the guiding edge 401 is fixedly connected to the top of the inner side of the cabinet body 1, an engaging rectangular ring 402 engaged with the engaging base 2 is slidably engaged inside the guiding edge 401, a fire-proof cover pad 403 is fixedly connected between the engaging rectangular ring 402 and the cabinet body 1, and the fire-proof cover pad 403 is in a folded state and is a flexible fire-proof cloth made of non-flammable material, such as glass fiber, asbestos fiber, etc.;

the top of the cabinet body 1 is provided with two longitudinal grooves 404, the two longitudinal grooves 404 are symmetrically arranged along the top of the cabinet body 1, the front side and the rear side of the inner wall of the longitudinal groove 404 are rotatably connected with a medium shaft 405, a bearing is embedded at the joint of the medium shaft 405 and the longitudinal groove 404, the bearing can effectively reduce the friction coefficient of the medium shaft 405 in the motion process, and can limit the position, the rotating precision is ensured, the surface of the intermediate shaft 405 is fixedly sleeved with a wire wheel 406, the wire wheel 406 is provided with a steel cable 407, the number of the wire wheels 406 and the number of the steel cables 407 are four, and the four wire wheels 406 and the steel cable 407 are positioned at the four corners of the fitting rectangular ring 402, namely, the two medium shafts 405 are symmetrically arranged at the front side and the rear side of the two medium shafts, the inner wall of the longitudinal groove 404 is provided with wire holes 408 communicated with the interior of the guide edge 401, and one end of the steel cable 407 penetrates through the wire holes 408 to be fixedly connected to the embedded torque ring 402;

the top of the cabinet body 1 and the interior of the longitudinal groove 404 are provided with an active warning device 409 matched with the medium shaft 405 and the steel cable 407, and the passive warning mechanism 5 is arranged at the bottom of the cabinet body 1 and matched with the steel cable 407;

the bottom of the side wall of the cabinet body 1 is fixedly connected with a convex seat 410, the convex seat 410 is rotatably connected with a rotating shaft 411, the surface of the rotating shaft 411 is respectively and fixedly connected with a limiting head 412 and a shifting arm 413, the surface of the rotating shaft 411 is movably sleeved with a torsion spring 414, two ends of the torsion spring 414 are respectively clamped on the convex seat 410 and the shifting arm 413, the torsion spring 414 normally pushes the rotating shaft 411 and the shifting arm 413 to rotate upwards, the limiting head 412 can be abutted against the cabinet body 1 to limit the maximum upward rotating angle, and certain buffering can be carried out on the falling embedded torque ring 402;

the number of the rotary shafts 411 is two, the two rotary shafts 411 are symmetrically arranged along the inner wall of the cabinet body 1, the front surface of the inner wall of the cabinet body 1 is rotatably connected with a connecting shaft 415 through a convex seat 410, two ends of the connecting shaft 415 and the corresponding end of the rotary shaft 411 are fixedly sleeved with transmission gears 416 which are meshed with each other, and when the single-side rotary shaft 411 rotates, the other rotary shaft 411 can be driven to synchronously rotate through the connecting shaft 415;

the inner part of the side wall of the cabinet body 1 is provided with a cable channel 417 communicated with the longitudinal groove 404, the dial arm 413, the rotary shaft 411 and the surface of the cabinet body 1 are provided with a slot 418 communicated with the cable channel 417, a heat-sensitive glass tube 419 is inserted in the slot 418, the glass tube is used on a fire nozzle, liquid such as alcohol or ether is filled in the glass tube, the glass tube is broken when the glass tube is expanded when meeting high temperature, the rest end of the steel cable 407 is positioned in the cable channel 417 and is fixedly connected with a lantern ring 420, the lantern ring 420 is sleeved and clamped on the heat-sensitive glass tube 419, the heat-sensitive glass tube 419 is locked through the lantern ring 420 at the bottom end of the steel cable 407, and the steel cable 407 is embedded with the torque ring 402 through pulling and locking.

In this embodiment, as shown in fig. 1, fig. 2, fig. 4, fig. 5 and fig. 6, the active warning device 409 includes a housing 40901, the housing 40901 is fixed on the top surface of the cabinet body 1, a through groove 40902 communicating the housing 40901 with the longitudinal groove 404 is formed on the surface of the cabinet body 1, the front and rear sides of the inner wall of the housing 40901 are rotatably connected with a parity shaft 40903, the surfaces of the parity shaft 40903 and the middle shaft 405 are both fixedly sleeved with chain wheels 40904, and the two chain wheels 40904 are in transmission connection through the chain 40905;

the surface of the coaxial shaft 40903 is clamped with a coil spring 40906, the surface of the outer end of the coil spring 40906 is welded with a convex hammer 40907, and the inner wall of the housing 40901 is welded with a weight plate 40908 matched with the convex hammer 40907.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 7, the passive warning mechanism 5 includes a winding cavity 501, the winding cavity 501 is opened at the bottom of the cabinet body 1 and is communicated with the cable channel 417, a winding shaft 502 is rotatably connected inside the winding cavity 501, and a bright warning pad 503 is wound on the surface of the winding shaft 502;

the outer end of the bright warning pad 503 penetrates the cabinet body 1 and is fixedly connected with a cross bar 504 outside, a guide groove 505 communicated with the cable way 417 is formed in the surface of the cabinet body 1, a pull arm 506 is fixedly connected to the surface of the cross bar 504 in the guide groove 505, and the pull arm 506 is fixedly connected with the bottom end of the steel cable 407.

In this embodiment, as shown in fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6, the surface of the pulley 406 is provided with a texture matching with the steel cable 407, and the top of the longitudinal groove 404 is provided with a pressing wheel matching with the steel cable 407 and the texture, so that a better friction force is provided between the pulley 406 and the steel cable 407, and it is ensured that the pulley 406 and the neutral shaft 405 can rotate effectively following the drawing of the steel cable 407.

In this embodiment, as shown in fig. 6, two ring partitions are symmetrically and fixedly connected to an inner wall of the housing 40901 along the coil spring 40906, so as to limit two sides of the coil spring 40906 to a certain extent and ensure that the coil spring can be rolled and knocked in order.

In this embodiment, as shown in fig. 7, the front end of the reel 502 penetrates through the cabinet body 1 and extends to the outside, and the front end of the reel 502 is fixedly sleeved with a turntable, so that the maintenance personnel can roll the bright warning pad 503, pull the steel cable 407 and the embedded rectangular ring 402 to return to the original position, and refill the heat-sensitive glass tube 419 for reuse.

A use method of a self-starting fireproof diffusion switch cabinet comprises the following steps:

s1, when the inside of the switch cabinet is on fire, the temperature inside the switch cabinet rises, the temperature sensing of the heat-sensitive glass tube 419 is broken, and when only one heat-sensitive glass tube 419 is started, the corresponding torsion spring 414 can drive the shifting arm 413 and the rotating shaft 411 to rotate upwards, and drive the other rotating shaft 411 to rotate upwards through the connecting shaft 415, so that the other heat-sensitive glass tubes 419 are broken through bending, and the effective starting of related equipment is ensured;

s2, the steel cable 407 is unlocked by breaking the heat-sensitive glass tube 419, so that the steel cable 407 cannot lock the embedded rectangular ring 402, the steel cable descends by self gravity, the folded fire shield cushion 403 is pulled to expand downwards until the embedded rectangular ring 402 is embedded with the embedded base 2, at the moment, the fire shield cushion 403 can seal equipment arranged inside the cabinet body 1, if the fire point is positioned on the equipment, the fire epitaxy can be isolated, the closed area accelerates the consumption of internal oxygen, so that the fire is inhibited and self-extinguished, if the fire point is positioned on the cabinet body 1, the fire can be isolated from main equipment, the external fire is prevented from being transmitted to electric equipment, and the loss caused by the fire can be effectively reduced;

s3, in the process of S2, the wire cable 407 is pulled by the embedded torque ring 402 to synchronously pull the wire wheel 406 and the middle shaft 405 to rotate, and the chain 40905 drives the top homothetic shaft 40903 to rotate so as to tighten the coil spring 40906 for strengthening, and the coil spring 40906 in the strengthened state continuously drives the convex hammer 40907 to move along the housing 40901 to stir and strike the bell sheet 40908, so that people can actively warn outwards through the bell sound, and can know the fire;

s4, in the process of the above-mentioned S2, the steel cable 407 is pulled by the engaging rectangular ring 402 to move up the horizontal bar 504 synchronously by the pulling arm 506, and the bright warning pad 503 on the surface of the reel 502 is pulled out, so that the warning is made to the outside by the warning color, further increasing the rate of the fire.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.