CN112968371A

CN112968371A - Switch board with heat dissipation fire extinguishing function

Info

Publication number: CN112968371A
Application number: CN202110185977.5A
Authority: CN
Inventors: 谢满英
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-13
Filing date: 2021-02-13
Publication date: 2021-06-15

Abstract

The invention discloses a power distribution cabinet with a heat dissipation and fire extinguishing function, which comprises a cabinet body, wherein stepped vents are symmetrically formed in two sides of the cabinet body, each vent consists of an inner vent and an outer vent which are communicated from inside to outside, a rain shielding plate is rotatably arranged on the inner wall of the upper end of one side, away from the inner vent, of the outer vent through a rotating shaft, the rain shielding plate and the inner wall of the lower end of one side of the outer vent are jointly and hermetically connected with an arc corrugated pipe, one side, close to the inner vent, of the rain shielding plate is fixedly connected with a sealing gasket which is larger than the inner vent in shape and size and is in a frame shape in a gluing mode, the arc corrugated pipe is. Has the advantages that: the invention has multiple purposes by one power source, flexibly utilizes the arrangement direction of the fan blades and the one-way bearing to separate heat dissipation and vibration removal of impurities on meshes, and opens the rain shielding plate through the arc corrugated pipe to dissipate heat or closes the rain shielding plate to extinguish fire, thereby having stronger creativity.

Description

Switch board with heat dissipation fire extinguishing function

Technical Field

The invention relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet with a heat dissipation and fire extinguishing function.

Background

Present switch board is as distribution system's final stage equipment, and its internal circuit structure is complicated, and calorific capacity is great, and current switch board is generally seted up the vent in cabinet body both sides, and two vents are one as the air intake, one as the air outlet to at vent installation dust screen in order to play dustproof effect, nevertheless have following defect: after long-time use, the side of the dustproof net facing the outside is always adhered or blocked with meshes, so that the air flow and the heat dissipation effect are reduced; some switch boards are internal in order to prevent that the rainwater from gradually getting into the cabinet through the vent, and set up the dash board in the cabinet body outside and the upside at the vent, in case the internal heat dissipation efficiency of cabinet is not enough or heat-radiating equipment breaks down, will lead to the heat siltation, thereby cause the conflagration, the vent at this moment constantly gets into oxygen, be undoubtedly the help and the fierce of conflagration, and the current cabinet body can only report to the police when meetting the conflagration, does not put out a fire the measure, when technical staff discovery again to rescue, probably damaged completely.

In order to solve the problem, a power distribution cabinet with a heat dissipation and fire extinguishing function is provided.

Disclosure of Invention

The invention aims to solve the problems in the background art, and provides a power distribution cabinet with a heat dissipation and fire extinguishing function.

In order to achieve the purpose, the invention adopts the following technical scheme: a power distribution cabinet with a heat dissipation and fire extinguishing function comprises a cabinet body, stepped vents are symmetrically formed in two sides of the cabinet body, each vent consists of an inner vent and an outer vent which are communicated from inside to outside, a flashing plate is rotatably installed on the inner wall of the upper end of one side, far away from the inner vent, of the outer vent through a rotating shaft, the flashing plate and the inner wall of the lower end of one side of the outer vent are jointly and hermetically connected with an arc corrugated pipe, one side, close to the inner vent, of the flashing plate is fixedly connected with a sealing gasket which is larger than the inner vent in shape and size and is in a frame shape, the arc corrugated pipe is connected with an air discharging pipe, and; the inner wall of the inner vent is fixedly connected with a dust screen and a fixed plate from inside to outside in sequence, one side of the fixed plate, which is far away from the dust screen, is provided with a chute, a linkage rod which is rotationally connected with the two dust screens is arranged in the cabinet body, the end part of the linkage rod penetrates through the dust screen and is connected with a cam through a one-way bearing, the one-way bearing is fixedly connected with the inner wall of the chute, the cam is in an elliptical shape, a slide block is symmetrically and slidably connected in the chute relative to the linkage rod, one side of the slide block, which is far away from the linkage rod, and the inner wall of the chute are jointly and fixedly connected with a spring, the upper inner wall and the lower inner wall of the inner vent are symmetrically articulated with swing rods at one side of the fixed plate, which is far away from the dust screen, one end, the air draft mechanisms comprise a plurality of fan blades which are circumferentially and fixedly connected to the linkage rod, and the fan blades in the two air draft mechanisms are symmetrically arranged one by one; the inner wall of the cabinet body corresponding to the vent position is fixedly connected with a fixed block, an installation cavity is formed in the fixed block, a linkage rod penetrates through the installation cavity and is connected with the fixed block in a rotating mode, a top groove is formed in the inner top wall of the installation cavity, a sliding permanent magnet is connected in the top groove in a sliding mode, a motor is fixedly installed at the lower end of the sliding permanent magnet, a third bevel gear is fixedly connected to the output end of the motor, a first electromagnetic block and a second electromagnetic block are fixedly embedded in the inner walls of the two sides of the top groove respectively, the first electromagnetic block and the second electromagnetic block are attracted with the sliding permanent magnet, a first bevel gear is coaxially and fixedly sleeved on the left side of the third bevel gear at the position, located in the installation cavity, of the linkage rod, a fixed shaft is fixedly connected to the inner wall of the left side of the installation cavity, the fixed shaft is parallel to the axis of the linkage, a gap is formed between the turntable and the right inner wall of the mounting cavity and is connected with an air inlet mechanism; the right side inner wall fixed mounting of the cabinet body has control panel and fire monitor, motor, first electromagnetism piece, second electromagnetism piece, solenoid valve all with control panel electric connection.

In the above-mentioned switch board that has the heat dissipation function of putting out a fire, be connected with clockwork spring device between pivot and the outer vent.

In the power distribution cabinet with the heat dissipation and fire extinguishing functions, the knocking balls are arranged in a staggered manner with the first connecting rod and the fixing plate.

In the power distribution cabinet with the heat dissipation and fire extinguishing functions, the side faces of the sliding block and the sliding permanent magnet block are both in a dovetail shape, and the sliding groove and the top groove are both dovetail grooves.

In foretell switch board with heat dissipation fire extinguishing function, the piston groove has been seted up including seting up roof and on the right side of apical groove in the installation cavity to the air inlet mechanism, the vertical sliding connection in piston groove has the piston board, the eccentric department in one side that second bevel gear was kept away from to the lower extreme of piston board and carousel articulates jointly has the second connecting rod, the inner wall intercommunication in piston groove has one-way intake pipe and one-way outlet duct, the one end and the external intercommunication in piston groove are kept away from to one-way intake pipe, the one end and the arc bellows intercommunication in piston groove are kept away from to one-way outlet duct.

In the above power distribution cabinet with the heat dissipation and fire extinguishing functions, the motor is a servo motor.

In foretell switch board that has heat dissipation fire extinguishing function, the sealed cabinet door that is equipped with in front of the cabinet body, support between the rear side inner wall of the cabinet body and the cabinet door and have the baffle, there is the space between the upper end of baffle and the interior roof of the cabinet body.

Compared with the prior art, this switch board with heat dissipation function of putting out a fire's advantage lies in:

1. when the cabinet is normally used, the arc corrugated pipe is in an inflated state, the third bevel gear and the first bevel gear are in a meshed state, the motor drives the two air draft mechanisms to rotate at high speed through the linkage rod, the linkage rod and the two air draft mechanisms form an exhaust fan, the linkage rod and the two air draft mechanisms form an air outlet machine, and an air channel is formed in the cabinet body to dissipate heat;

2. after long-time use, the side of the dust screen facing the outside cannot be prevented from being blocked, the air intake is influenced, the motor is driven reversely, the motor rotates slowly to enable the two sliding blocks to be located at the farthest points away from the center on the cam, the spring is compressed, the motor rotates rapidly and highly, the two sliding blocks return back instantly under the elastic force of the spring, the swing rod is driven to swing within a certain angle through the first connecting rod, the knocking ball knocks the dust screen continuously, the operation is repeated for multiple times, the impurities blocked on the meshes of the dust screen can be knocked out, the motor rotates at high speed and does not change speed, the impurities can be blown away from the ventilation opening, and the heat dissipation of the dust screen is prevented from being influenced by the blockage for a long time;

3. when a fire occurs in the cabinet body, the electromagnetic valve is opened to release air in the arc-shaped corrugated pipe, the sealing gasket is tightly attached to the inner wall of the outer ventilation opening under the self weight of the rain shielding plate and the restoring force of the clockwork spring device, a sealing space is formed in the cabinet body, negative pressure is formed in the cabinet body after oxygen in the cabinet body is consumed due to combustion, the fire in the cabinet body can be automatically extinguished due to an anaerobic condition, and the condition that the power distribution assembly is scrapped due to too fast combustion is avoided;

4. the invention has multiple purposes by one power source, flexibly utilizes the arrangement direction of the fan blades and the one-way bearing to separate heat dissipation and vibration removal of impurities on meshes, and opens the rain shielding plate through the arc corrugated pipe to dissipate heat or closes the rain shielding plate to extinguish fire, thereby having stronger creativity.

Drawings

Fig. 1 is a perspective structural view of a front surface of a power distribution cabinet with a heat dissipation and fire extinguishing function according to the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 2;

FIG. 4 is an enlarged view of the structure of FIG. 2 at C;

fig. 5 is a schematic structural view of the front side of a power distribution cabinet fixing block with a heat dissipation and fire extinguishing function provided by the invention.

In the figure: 1 cabinet body, 2 internal ventilation openings, 3 external ventilation openings, 4 rotating shafts, 5 rain shielding plates, 6 sealing gaskets, 7 arc corrugated pipes, 8 dustproof nets, 9 fixing plates, 10 linkage rods, 11 fan blades, 12 one-way bearings, 13 sliding grooves, 14 cams, 15 sliding blocks, 16 springs, 17 first connecting rods, 18 swinging rods, 19 knocking balls, 20 fixing blocks, 21 mounting cavities, 22 first bevel gears, 23 second bevel gears, 24 rotating discs, 25 top grooves, 26 sliding permanent magnetic blocks, 27 first electromagnetic blocks, 28 second electromagnetic blocks, 29 piston grooves, 30 second connecting rods, 31 piston plates, 32 one-way air inlet pipes, 33 one-way air outlet pipes, 34 control panels, 35 fire monitors, 36 partition plates, 37 motors and 38 third bevel gears.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Examples

Referring to fig. 1-5, a power distribution cabinet with heat dissipation and fire extinguishing functions comprises a cabinet body 1, step-shaped vents are symmetrically formed in two sides of the cabinet body 1, each vent is composed of an inner vent 2 and an outer vent 3 which are communicated from inside to outside, a flashing 5 is rotatably mounted on the inner wall of the upper end of one side, away from the inner vent 2, of each outer vent 3 through a rotating shaft 4, the flashing 5 and the inner wall of the lower end of one side of each outer vent 3 are jointly and hermetically connected with an arc corrugated pipe 7, the corrugated pipe 7 forms an arc shape after being inflated, one side, close to the inner vent 2, of the flashing 5 is fixedly connected with a frame-shaped sealing gasket 6 which is larger than the inner vent 2 in shape and size in a gluing mode, the arc corrugated;

the inner wall of the inner vent 2 is fixedly connected with a dust screen 8 and a fixed plate 9 from inside to outside in sequence, one side of the fixed plate 9 far away from the dust screen 8 is provided with a chute 13, a linkage rod 10 rotationally connected with the two dust screens 8 is arranged in the cabinet body 1, the end part of the linkage rod 10 penetrates through the dust screen 8 and is connected with a cam 14 through a one-way bearing 12, the principle of the one-way bearing 12 is similar to that of a ratchet device, the one-way bearing 12 is fixedly connected with the inner wall of the chute 13, the cam 14 is in an oval shape, the distance between the two farthest ends far away from the center is far larger than the distance between the two nearest ends far away from the center on the cam 14, the fall is increased, a slide block 15 is symmetrically and slidably connected with the linkage rod 10 in the chute 13, one side of the slide block 15 far away from the linkage rod 10 and the inner wall of the, one end of the oscillating bar 18 is fixedly connected with a knocking ball 19, the middle part of the oscillating bar 18 and the slide block 15 are hinged together to form a first connecting rod 17, two air draft mechanisms are symmetrically arranged on the part, located in the cabinet body 1, of the linkage rod 10, each air draft mechanism comprises a plurality of fan blades 11 which are circumferentially and fixedly connected to the linkage rod 10, and the fan blades 11 in the two air draft mechanisms are symmetrically arranged one by one;

the inner wall of the cabinet body 1 corresponding to the position of the vent is fixedly connected with a fixed block 20, a mounting cavity 21 is arranged in the fixed block 20, a linkage rod 10 penetrates through the mounting cavity 21 and is rotatably connected with the fixed block 20, the inner top wall of the mounting cavity 21 is provided with a top groove 25, a sliding permanent magnet 26 is slidably connected in the top groove 25, the lower end of the sliding permanent magnet 26 is fixedly provided with a motor 37, the output end of the motor 37 is fixedly connected with a third bevel gear 38, the inner walls of the two sides of the top groove 25 are respectively and fixedly embedded with a first electromagnetic block 27 and a second electromagnetic block 28, the first electromagnetic block 27 and the second electromagnetic block 28 are respectively attracted with the sliding permanent magnet 26, when in use, only one of the first electromagnetic block 27 and the second electromagnetic block 28 is in an electrified state, the position of the linkage rod 10 in the mounting cavity 21 is coaxially connected with a first bevel gear 22 on the left side of the third bevel gear 38, the inner wall of the mounting cavity 21, the fixed shaft is parallel to the axis of the linkage rod 10, a second bevel gear 23 and a rotary table 24 are sequentially coaxially and fixedly connected to the right end of the fixed shaft, and a gap is formed between the rotary table 24 and the inner wall of the right side of the mounting cavity 21 and connected with an air inlet mechanism;

the right inner wall of the cabinet body 1 is fixedly provided with a control panel 34 and a fire monitor 35, and the fire monitor 35, the motor 37, the first electromagnetic block 27, the second electromagnetic block 28 and the electromagnetic valve are all electrically connected with the control panel 34.

A clockwork device is connected between the rotating shaft 4 and the outer vent 3, the positive pressure of the rain shielding plate 5 on the outer vent 3 is increased, and the sealing performance of the cabinet body 1 is improved.

The hitting ball 19 is arranged in a staggered manner with the first connecting rod 17 and the fixing plate 9, and the fixing plate 9 cannot obstruct the swinging of the hitting ball 19.

The side surfaces of the sliding block 15 and the sliding permanent magnet 26 are both in a dovetail shape, the sliding groove 13 and the top groove 25 are both in a dovetail groove, and the sliding block 15 and the sliding groove 13 as well as the sliding permanent magnet 26 and the top groove 25 slide in a limiting mode so as to be prevented from being separated.

The mechanism of admitting air has seted up piston groove 29 including seting up in installation cavity 21 roof and on the right side of apical groove 25, vertical sliding connection has piston plate 31 in the piston groove 29, the eccentric department in one side that second bevel gear 23 was kept away from to piston plate 31's lower extreme and carousel 24 articulates jointly has second connecting rod 30, the inner wall intercommunication of piston groove 29 has one-way intake pipe 32 and one-way outlet duct 33, one-way intake pipe 32 and one-way outlet duct 33 comprise the pipeline with the check valve of installing on the pipeline, flow direction with this restriction air, the one end and the external intercommunication of piston groove 29 are kept away from to one-way intake pipe 32, the one end and the arc bellows 7 intercommunication of piston groove 29 are kept away from to one.

The motor 37 is a servo motor, which is prior art.

The sealed cabinet door (not shown in the figure) that is equipped with in the front of the cabinet body 1, support between the rear side inner wall of the cabinet body 1 and the cabinet door to have baffle 36, have the space between the upper end of baffle 36 and the interior roof of the cabinet body 1, add baffle 36, make two vents in the cabinet body 1 not the through, reinforcing hot-air's flow efficiency.

Before the invention is used, what needs to be explained in advance is that: the motor 37 is electrically connected with a servo driver matched with the motor, the servo driver is controlled by the control panel 34, and the other fire monitor 35 is in the prior art and can monitor whether a fire exists in the cabinet body 1 in real time; the motor 37, the first magnet block 27, the second magnet block 28, the opening and closing of the solenoid valves, and the change of the rotation speed of the motor 37 are controlled by the control panel 34, and the control panel 34 is not required to be repeatedly proposed in the following description of the operation principle.

The invention can determine the working mode of the mobile phone according to different environments, and the working mode is as follows:

1. when the cabinet normally works and a heat dissipation state generated by the work of a power distribution assembly in the cabinet body 1 is needed, the second electromagnetic block 28 is electrified and generates magnetic attraction force on the sliding permanent magnetic block 26, the third bevel gear 38 is meshed with the second bevel gear 23, the motor 37 is driven at high speed and transmits torque to the fixed shaft through the third bevel gear 38 and the second bevel gear 23 which are meshed with each other, the rotary table 34, the second connecting rod 30 and the piston plate 31 form a crank-slider mechanism to drive the piston plate 31 to reciprocate in the piston groove 29, under the limitation of the air flowing directions of the one-way air inlet pipe 32 and the one-way air outlet pipe 33, external air is continuously transferred through the piston groove 29 and transmitted to the arc-shaped corrugated pipe 7, and the rain shielding plate 5 is gradually jacked up by the arc-shaped corrugated pipe 7, which;

the second electromagnetic block 28 is powered off, the first electromagnetic block 27 is powered on and generates magnetic attraction force on the sliding permanent magnet 26, the third bevel gear 38 is meshed with the first bevel gear 22, the motor 37 is driven at high speed and transmits torque to the linkage rod 10 through the third bevel gear 38 and the first bevel gear 22 which are meshed with each other, and at the moment, under the action of the one-way bearing 12, the cam 14 has no driving force;

as is well known to the skilled person: in the prior art, the wind direction of a fan in the rotation process is related to the driving direction of a motor and the arrangement direction of fan blades, and the fan blades 11 in the two air draft mechanisms are symmetrically arranged, so that the linkage rod 10 and the two air draft mechanisms form an exhaust fan and an air outlet fan, an air channel is formed in the cabinet body 1 for heat dissipation, and the left air outlet fan and the right air exhaust fan are taken as examples.

2. After long-term use, the side of the dust screen 8 facing the outside cannot be blocked to affect the air intake, which is the same as the description of the point 1, in that the third bevel gear 38 and the first bevel gear 22 are in a meshed state, because the cam 14 is in an elliptical structure, the motor 37 is driven in reverse direction, the motor 37 rotates slowly to make the two sliders 15 and the farthest point on the cam 14 away from the center, the spring 16 is compressed, the rear motor 37 rotates rapidly and highly, the two sliders 15 return instantaneously under the elastic force of the spring 16, the swing rod 18 is driven by the first connecting rod 17 to swing within a certain angle, the knocking ball 19 knocks the dust screen 8 continuously, the operation is repeated for many times, the impurities blocked on the dust screen 8 can be knocked out, the rear motor 37 rotates at high speed without changing speed, according to the description of the point 1, the left side is the air intake machine, the right side is the air-out machine, and the wind direction is opposite, can blow away impurity from the vent, avoids dust screen 8 to influence the heat dissipation because of blockking up for a long time.

3. When the internal condition of a fire that takes place of cabinet, then the solenoid valve is opened, emit the air in the arc bellows 7, under the dead weight of dash board 5 and clockwork spring device's restoring force, make sealed 6 inner wall of hugging closely outer vent 3 of packing, the internal confined space that forms of cabinet, after the internal oxygen of cabinet has consumed because of the burning, the internal negative pressure that forms of cabinet, the internal condition of a fire of cabinet 1 just can extinguish because of the anaerobic condition is automatic, avoid the too fast condemned condition of distribution assembly burning.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a switch board with heat dissipation function of putting out a fire, includes the cabinet body (1), its characterized in that, the notch of notch cuttype is seted up to the bilateral symmetry of the cabinet body (1), the vent comprises from inside to outside communicating interior vent (2) and outer vent (3), one side upper end inner wall that interior vent (2) were kept away from in outer vent (3) is rotated through pivot (4) and is installed dash board (5), dash board (5) and one side lower extreme inner wall of outer vent (3) joint have arc bellows (7) jointly, one side veneer fixedly connected with shape size that dash board (5) are close to interior vent (2) is greater than interior vent (2) and is the sealed pad (6) of frame shape, arc bellows (7) are connected with the bleed pipe, and install on the bleed pipe;

the inner wall of the inner vent (2) is fixedly connected with a dust screen (8) and a fixed plate (9) from inside to outside in sequence, one side, away from the dust screen (8), of the fixed plate (9) is provided with a sliding chute (13), a linkage rod (10) rotatably connected with the two dust screens (8) is arranged in the cabinet body (1), the end part of the linkage rod (10) penetrates through the dust screen (8) and is connected with a cam (14) through a one-way bearing (12), the one-way bearing (12) is fixedly connected with the inner wall of the sliding chute (13), the cam (14) is in an oval shape, a sliding block (15) is symmetrically and slidably connected with the linkage rod (10) in the sliding chute (13), one side, away from the linkage rod (10), of the sliding block (15) and the inner wall of the sliding chute (13) are fixedly connected with a spring (16) together, the upper inner wall and the lower inner wall of the inner vent (2) are symmetrically hinged with, one end of the swing rod (18) is fixedly connected with a knocking ball (19), the middle part of the swing rod (18) and the sliding block (15) are hinged to form a first connecting rod (17), two air draft mechanisms are symmetrically arranged on the part, located in the cabinet body (1), of the linkage rod (10), each air draft mechanism comprises a plurality of fan blades (11) which are circumferentially and fixedly connected to the linkage rod (10), and the fan blades (11) in the two air draft mechanisms are symmetrically arranged one by one;

the cabinet body (1) is fixedly connected with a fixed block (20) on the inner wall corresponding to the position of the ventilation opening, an installation cavity (21) is formed in the fixed block (20), a linkage rod (10) penetrates through the installation cavity (21) and is rotationally connected with the fixed block (20), a top groove (25) is formed in the inner top wall of the installation cavity (21), a sliding permanent magnet (26) is connected in the top groove (25) in a sliding mode, a motor (37) is fixedly installed at the lower end of the sliding permanent magnet (26), a third bevel gear (38) is fixedly connected with the output end of the motor (37), first electromagnetic blocks (27) and second electromagnetic blocks (28) are fixedly embedded in the inner walls of the two sides of the top groove (25) respectively, the first electromagnetic blocks (27) and the second electromagnetic blocks (28) are arranged in an absorbing mode with the sliding permanent magnet (26), the position of the linkage rod (10) in the installation cavity (21) is coaxially fixed with the first bevel gear (22) on the left side of the third bevel gear (38), a fixed shaft is fixedly connected to the inner wall of the left side of the mounting cavity (21), the fixed shaft is parallel to the axis of the linkage rod (10), a second bevel gear (23) and a rotary table (24) are sequentially and coaxially and fixedly connected to the right end of the fixed shaft, and a gap is reserved between the rotary table (24) and the inner wall of the right side of the mounting cavity (21) and connected with an air inlet mechanism;

the right side inner wall fixed mounting of the cabinet body (1) has control panel (34) and fire monitor (35), motor (37), first electromagnetism piece (27), second electromagnetism piece (28), solenoid valve all with control panel (34) electric connection.

2. The power distribution cabinet with the heat dissipation and fire extinguishing functions according to claim 1, wherein a clockwork is connected between the rotating shaft (4) and the outer ventilation opening (3).

3. The power distribution cabinet with the heat dissipation and fire extinguishing functions as claimed in claim 1, wherein the knocking balls (19) are arranged in a staggered manner with the first connecting rod (17) and the fixing plate (9).

4. The power distribution cabinet with the heat dissipation and fire extinguishing functions as claimed in claim 1, wherein the side surfaces of the sliding block (15) and the sliding permanent magnet block (26) are both in a dovetail shape, and the sliding groove (13) and the top groove (25) are both in a dovetail groove shape.

5. The power distribution cabinet with the heat dissipation and fire extinguishing functions according to claim 1, wherein the air inlet mechanism comprises a top wall arranged in the installation cavity (21) and a piston groove (29) arranged on the right side of the top groove (25), a piston plate (31) is vertically connected in the piston groove (29) in a sliding manner, a second connecting rod (30) is hinged to the lower end of the piston plate (31) and the eccentric position of one side, away from the second bevel gear (23), of the turntable (24) at the same time, the inner wall of the piston groove (29) is communicated with a one-way air inlet pipe (32) and a one-way air outlet pipe (33), one end, away from the piston groove (29), of the one-way air inlet pipe (32) is communicated with the outside, and one end, away from the piston groove (29), of the one-way air outlet pipe (.

6. The switch board with heat dissipation and fire extinguishing functions according to claim 1, wherein the motor (37) is a servo motor.

7. The power distribution cabinet with the heat dissipation and fire extinguishing functions according to claim 1, characterized in that a cabinet door is hermetically installed on the front side of the cabinet body (1), a partition plate (36) is abutted between the inner wall of the rear side of the cabinet body (1) and the cabinet door, and a gap is formed between the upper end of the partition plate (36) and the inner top wall of the cabinet body (1).