CN114374151A

CN114374151A - Power distribution cabinet applied to tropical monsoon climate

Info

Publication number: CN114374151A
Application number: CN202210176332.XA
Authority: CN
Inventors: 徐梓巅
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-04-19

Abstract

The invention belongs to the technical field of power distribution cabinets, and particularly relates to a power distribution cabinet applied to tropical monsoon climate, which comprises an outer cabinet body, wherein first sliding grooves are formed in two sides of the top of the inner part of the outer cabinet body, an inner cabinet body is arranged in the outer cabinet body, first sliding blocks are fixedly arranged at positions, corresponding to the first sliding grooves, on two sides of the inner cabinet body, the outer cabinet body and the inner cabinet body are in matched sliding connection through the first sliding grooves and the first sliding blocks, an air bag is fixedly arranged at the bottom of the inner cabinet body, the bottom of the air bag is in contact with the outer cabinet body, and a water inlet pipe is fixedly arranged at the top of a water storage pipe, extends to the outer part of the outer cabinet body. When accumulated water on the ground with large rainfall enters the inner part of the outer cabinet body, the air bag can drive the inner cabinet body to float on the water surface under the action of the air bag, so that the probability of water inflow in the inner cabinet body is reduced, the probability of damage of elements in the inner cabinet body due to water inflow is further reduced, and the normal use of the power distribution cabinet is guaranteed.

Description

Power distribution cabinet applied to tropical monsoon climate

Technical Field

The invention belongs to the technical field of power distribution cabinets, and particularly relates to a power distribution cabinet applied to tropical monsoon climate.

Background

The power distribution cabinet is a general name of a motor control center, and is used in occasions with dispersed loads and less loops; motor control centers are used in load concentration and loop-rich applications, where they distribute the power from a circuit of a higher level of distribution equipment to nearby loads, which provide protection, monitoring and control of the loads.

The problems existing in the prior art are as follows:

some power distribution cabinets also need to be installed in tropical monsoon climate areas due to power distribution requirements, but rainfall is abundant in the tropical monsoon climate areas, the rainfall is large in rainy seasons, accumulated water on the ground surface is increased gradually in the rainy seasons, and the accumulated water can enter the power distribution cabinets installed on the ground or at lower positions, so that some elements in the power distribution cabinets can be damaged due to water entering, and normal use of the power distribution cabinets is affected.

Disclosure of Invention

The invention aims to provide a power distribution cabinet applied to tropical monsoon climate, when accumulated water on the ground with larger rainfall enters the outer cabinet body, the air bag can drive the inner cabinet body to float on the water surface under the action of the air bag, so that the probability of water inflow in the inner cabinet body is reduced, the probability of damage of elements in the inner cabinet body due to water inflow is further reduced, and the normal use of the power distribution cabinet is ensured.

The technical scheme adopted by the invention is as follows:

a power distribution cabinet applied to tropical monsoon climate comprises an outer cabinet body, wherein first sliding grooves are formed in two sides of the top of the inner part of the outer cabinet body, an inner cabinet body is arranged inside the outer cabinet body, first sliding blocks are fixedly arranged at positions, corresponding to the first sliding grooves, of two sides of the inner cabinet body, the outer cabinet body and the inner cabinet body are in matched sliding connection through the first sliding grooves and the first sliding blocks, an air bag is fixedly arranged at the bottom of the inner cabinet body, and the bottom of the air bag is in contact with the outer cabinet body;

the inside of the outer cabinet body is located the fixed standpipe that is provided with in both sides of the inner cabinet body, the top of standpipe extends to the fixed inlet tube that is provided with in outside of the outer cabinet body, logical groove has been seted up to the inside bottom of standpipe, the inside that leads to the groove is provided with sealed piece, the top of sealed piece extends to the outside that leads to the groove, and the top of sealed piece closely covers in the top that leads to the groove, the fixed buoyancy piece that is provided with in top of sealed piece, the fixed buoyancy ball that is provided with in top of buoyancy piece, the fixed guide block that is provided with in both sides of buoyancy ball, the guide way has been seted up to the inside both sides of standpipe, guide block and guide way sliding connection, the outlet has been seted up to the bottom of the inside both sides of standpipe.

The inlet tube is funnel-shaped.

The both sides of the interior cabinet body are equidistant to have seted up the heat dissipation slotted hole, the front and the back of the inside of heat dissipation slotted hole articulate there is the articulated shaft, two the fixed ventilation pipe that is provided with of one end that the articulated shaft is relative, the one end that the interior cabinet body was kept away from to the ventilation pipe extends to the outside of the interior cabinet body, and the fixed weight piece that is provided with of one end that the interior cabinet body was kept away from at the ventilation pipe top, the standpipe outside is fixed with the position department that the ventilation pipe is corresponding and is provided with the baffle, the top of baffle contacts with the bottom of ventilation pipe.

The baffle outside is equidistant to be seted up and runs through the inside through-hole of baffle.

One end of the ventilation pipe, which is far away from the pendant block, extends into the inner cabinet body, and the end of the ventilation pipe is in an upward inclined state.

And a dust screen is fixedly arranged at one end of the inside of the ventilation pipe, which is far away from the drop block.

The dust screen is characterized in that a second sliding block is fixedly arranged at one end, close to the dust screen, of the outer wall of the ventilation pipe, a moving ring is arranged at a position, corresponding to the second sliding block, of the outer side of the ventilation pipe, a second sliding groove is formed in a position, corresponding to the second sliding block, of the inner wall of the moving ring, and the moving ring is in sliding connection with the ventilation pipe through the second sliding groove in a matched mode.

The dustproof net is characterized in that a hinged block is hinged to the position, corresponding to the dustproof net, of the outer side of the ventilation pipe, a knocking rod is fixedly arranged at one end, far away from the ventilation pipe, of the hinged block, the knocking rod is of an L-shaped structure, a pressing rod is fixedly arranged at one end, close to the moving ring, of the knocking rod, one end, far away from the knocking rod, of the pressing rod extends into the moving ring, knocking balls are fixedly arranged at one opposite ends of the knocking rods, and the outer side of the knocking balls is in contact with the dustproof net.

The sum of the masses of all the components on the end, far away from the weight, of the ventilating pipe is smaller than the mass of the weight.

The invention has the technical effects that:

(1) when rainfall is great, the rainwater is stored in the inside of standpipe gradually, the efficiency of outlet drainage is less than the efficiency of the inside water storage of first spout this moment, buoyancy ball and buoyancy piece are submerged gradually to the rainwater this moment, the buoyancy that makes the seal block receive is greater than the gravity of seal block gradually, seal block and first slider phase separation this moment, the rainwater that makes the inside storage of water storage pipe is arranged to the inside of the outer cabinet body through leading to the groove, thereby when rainfall is great, the internal rainfall of the outer cabinet in the twinkling of an eye is increased, along with the increase of the internal rainfall of the outer cabinet, make the gasbag can drive the internal cabinet body float on the surface of water through the effect of gasbag, thereby make the internal cabinet body rise along with the rising of the surface of water, reduce the internal portion probability of intaking, and then reduce the internal portion's component because the probability that intakes and damage, ensure the normal use of switch board.

(2) When the internal cabinet body risees, the internal cabinet body drives the articulated shaft and risees, owing to fall a gravity effect, makes the articulated shaft take place the slope at the in-process ventilation pipe that risees this moment to reduce the probability that the rainwater passes through the ventilation pipe and gets into internal portion of internal portion, further reduce the probability that internal portion of cabinet damaged because intaking, the normal use of guarantee switch board, rainwater accessible through-hole row to the bottom of external portion internal portion simultaneously reduces the probability of rainwater at the inside accumulation of ventilation pipe.

(3) Because this end of ventilation pipe is the tilt up state to further reduce the probability that the rainwater passes through the ventilation pipe and gets into the internal portion of interior cabinet, and then reduce the probability that the internal portion of interior cabinet damaged because of intaking, the normal use of guarantee switch board.

(4) The in-process that the slope took place at the ventilation pipe, the top and the radiating groove hole inner wall in the ventilation pipe outside bump, thereby make the shifting ring take place to make a round trip to slide in the outside of ventilation pipe, the second slider slides in second spout inside, the in-process shifting ring that rocks at the shifting ring is pressed according to the pressure pole, thereby make and press the pressure pole through strikeing the pole and drive articulated piece and take place to rotate, strike the pole at this in-process and drive and strike the ball and carry out striking repeatedly to the dust screen, thereby carry out the clearance of certain degree to the dust of adhesion on the dust screen, thereby the ventilation cooling effect of guarantee dust screen, and then reduce the probability that the inside component of the internal cabinet damaged because of the high temperature, further guarantee the normal use of the internal cabinet body.

(5) Vibrate the inside that the dust that gets off falls to the ventilation pipe this moment, take place to incline and take place the striking with the radiating groove hole inner wall in next time ventilation pipe, the inside dust of ventilation pipe can arrange to the outside of ventilation pipe at this in-process to reduce the inside probability that takes place to block up of ventilation pipe, guarantee ventilation pipe ventilation radiating effect, and then reduce the probability that the inside component of the interior cabinet body damaged because the high temperature, further guarantee the normal use of the interior cabinet body.

Drawings

FIG. 1 is a front view provided by an embodiment of the present invention;

fig. 2 is a schematic view of the internal structure of the outer cabinet according to the embodiment of the present invention;

fig. 3 is a schematic view of the internal structure of the inner cabinet according to the embodiment of the present invention;

fig. 4 is a side view of an inner cabinet provided by an embodiment of the present invention;

FIG. 5 is an enlarged view at A of FIG. 3 provided by an embodiment of the present invention;

FIG. 6 is an enlarged view at B in FIG. 3 provided by an embodiment of the present invention;

FIG. 7 is an enlarged view at C in FIG. 3 provided by an embodiment of the present invention;

fig. 8 is an enlarged view of a portion of the structure of fig. 7 according to an embodiment of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an outer cabinet body; 2. an air bag; 3. an inner cabinet body; 4. a water storage pipe; 5. a water inlet pipe; 6. a first slider; 7. a guide groove; 8. a through groove; 9. a sealing block; 10. a buoyancy block; 11. a buoyant ball; 12. a guide block; 13. a water drain hole; 14. a first chute; 15. a baffle plate; 16. a through hole; 17. a heat dissipation slot; 18. hinging a shaft; 19. a vent pipe; 20. a dust screen; 21. a second slider; 22. a second chute; 23. a moving ring; 24. a pressing lever; 25. a knock bar; 26. a hinged block; 27. knocking and hitting the ball; 28. a pendant block.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

As shown in fig. 1-8, a power distribution cabinet applied to tropical monsoon climate includes an outer cabinet body 1, first sliding grooves 14 are formed on two sides of the top inside the outer cabinet body 1, an inner cabinet body 3 is arranged inside the outer cabinet body 1, first sliding blocks 6 are fixedly arranged at positions on two sides of the inner cabinet body 3 corresponding to the first sliding grooves 14, the outer cabinet body 1 and the inner cabinet body 3 are mutually matched and slidably connected through the first sliding grooves 14 and the first sliding blocks 6, an air bag 2 is fixedly arranged at the bottom of the inner cabinet body 3, and the bottom of the air bag 2 is in contact with the outer cabinet body 1;

the inside of the outer cabinet body 1 is located the fixed standpipe 4 that is provided with in both sides of the internal cabinet body 3, the top of standpipe 4 extends to the fixed inlet tube 5 that is provided with in outside of the external cabinet body 1, logical groove 8 has been seted up to the inside bottom of standpipe 4, the inside that leads to groove 8 is provided with seal block 9, seal block 9's top extends to the outside that leads to groove 8, and seal block 9's top covers closely in the top that leads to groove 8, the fixed buoyancy block 10 that is provided with in top of seal block 9, the fixed buoyancy ball 11 that is provided with in top of buoyancy block 10, the fixed guide block 12 that is provided with in both sides of buoyancy ball 11, guide way 7 has been seted up to the inside both sides of standpipe 4, guide block 12 and guide way 7 sliding connection, outlet 13 has been seted up to the bottom of the inside both sides of standpipe 4.

According to the structure, when the rainfall is large, the rainwater is gradually stored in the water storage pipe 4, the drainage efficiency of the drain hole 13 is lower than that of the water stored in the first sliding groove 14, the buoyancy ball 11 and the buoyancy block 10 are gradually submerged by the rainwater, the buoyancy force borne by the sealing block 9 is gradually higher than the gravity of the sealing block 9, the sealing block 9 is separated from the first sliding block 6, the rainwater stored in the water storage pipe 4 is discharged to the inside of the outer cabinet body 1 through the through groove 8, so that when the rainfall is large, the rainwater amount in the outer cabinet body 1 is instantly increased, along with the increase of the rainwater amount in the outer cabinet body 1, the airbag 2 can drive the inner cabinet body 3 to float on the water surface through the action of the airbag 2, the inner cabinet body 3 is lifted along with the rise of the water surface, the probability of water entering the inner cabinet body 3 is reduced, and the probability of damage of elements in the inner cabinet body 3 caused by water entering is further reduced, the normal use of switch board is ensured.

Referring to fig. 2, the water inlet pipe 5 is funnel-shaped, so that rainwater inside the water storage pipe 4 can be stored conveniently.

Referring to fig. 3 and 7, heat dissipation slotted holes 17 have been seted up at equidistant in the both sides of the inner cabinet body 3, the front and the back of the inside of heat dissipation slotted hole 17 articulate there is articulated shaft 18, the fixed ventilation pipe 19 that is provided with of one end that two articulated shafts 18 are relative, the one end that the inner cabinet body 3 was kept away from to ventilation pipe 19 extends to the outside of the inner cabinet body 3, and the fixed weight piece 28 that is provided with of one end that the inner cabinet body 3 was kept away from at ventilation pipe 19 top, baffle 15 is fixed in the position department in the standpipe 4 outside corresponding with ventilation pipe 19, the tiny rigid lamellar structure outside baffle 15, the top of baffle 15 contacts with the bottom of ventilation pipe 19, baffle 15 outside is equidistant to be seted up through-hole 16 that runs through the inside of baffle 15.

According to above-mentioned structure, when the internal cabinet body 3 risees, the internal cabinet body 3 drives articulated shaft 18 and risees, this moment owing to fall the effect of piece 28 gravity, make articulated shaft 18 take place the slope at the in-process ventilation pipe 19 that risees, thereby reduce the rainwater and pass through the inside probability of ventilation pipe 19 entering internal cabinet body 3, further reduce the inside component of the internal cabinet body 3 and because the probability that the water damage, the normal use of guarantee switch board, rainwater accessible through-hole 16 is arranged to the bottom of external cabinet body 1 inside simultaneously, reduce the probability of rainwater at the inside accumulation of ventilation pipe 19.

Referring to fig. 7, the one end that the pendant 28 was kept away from to ventilation pipe 19 extends to the inside of interior cabinet body 3, and this end of ventilation pipe 19 is the tilt up state, further reduces the probability that the rainwater got into interior cabinet body 3 inside through ventilation pipe 19, and then reduces the probability that the inside component of interior cabinet body 3 damaged because of intaking, ensures the normal use of switch board.

Referring to fig. 7 and 8, a dust screen 20 is fixedly arranged at one end of the inside of the ventilation pipe 19 far away from the drop block 28, a second slider 21 is fixedly arranged at one end of the outside of the ventilation pipe 19 near the dust screen 20, a moving ring 23 is arranged at a position of the outside of the ventilation pipe 19 corresponding to the second slider 21, a second sliding groove 22 is arranged at a position of the inner wall of the moving ring 23 corresponding to the second slider 21, the moving ring 23 is in sliding connection with the ventilation pipe 19 through the second sliding groove 22 in cooperation with the second slider 21, a hinge block 26 is hinged at a position of the outside of the ventilation pipe 19 corresponding to the dust screen 20, a knocking rod 25 is fixedly arranged at one end of the hinge block 26 far away from the ventilation pipe 19, the knocking rod 25 is in an "L" shaped structure, a pressing rod 24 is fixedly arranged at one end of the knocking rod 25 near the moving ring 23, one end of the pressing rod 24 far away from the knocking rod 25 extends into the moving ring 23, a knocking ball 27 is fixedly arranged at the opposite end of the two knocking rods 25, the outer side of the striking ball 27 is in contact with the dust screen 20, and the sum of the masses of all the parts of the vent tube 19 at the end remote from the weight 28 is smaller than the mass of the weight 28.

According to the structure, in the process that the ventilation pipe 19 inclines, the top outside the ventilation pipe 19 collides with the inner wall of the heat dissipation groove hole 17, so that the moving ring 23 slides back and forth outside the ventilation pipe 19, the second sliding block 21 slides inside the second sliding groove 22, the moving ring 23 presses the pressing rod 24 in the shaking process of the moving ring 23, so that the pressing rod 24 drives the hinge block 26 to rotate through the knocking rod 25, the knocking rod 25 drives the knocking rod 27 to repeatedly collide with the dust screen 20 in the process, so that dust adhered to the dust screen 20 is cleaned to a certain degree, the ventilation and heat dissipation effects of the dust screen 20 are guaranteed, the probability that elements inside the inner cabinet body 3 are damaged due to overhigh temperature is reduced, and the normal use of the inner cabinet body 3 is further guaranteed.

The dust that the vibrations got off at this moment falls to the inside of ventilation pipe 19, and when the next time ventilation pipe 19 takes place the slope and takes place the striking with heat dissipation slotted hole 17 inner wall, the inside dust of ventilation pipe 19 can be arranged to the outside of ventilation pipe 19 at this in-process to reduce the inside probability of taking place to block up of ventilation pipe 19, guarantee ventilation cooling's of ventilation pipe 19 effect, and then reduce the inside component of the interior cabinet body 3 because the probability of the too high damage of temperature, further guarantee the normal use of the interior cabinet body 3.

The working principle of the invention is as follows:

(1) when the rainfall is small, the rainwater can drop into the water storage pipe 4 through the water inlet pipe 5, the rainwater in the water storage pipe 4 can be discharged into the outer cabinet body 1 through the water outlet 13, and meanwhile, the rainwater is gradually discharged from the inner part of the outer cabinet body 1;

(2) when the rainfall is large, the rainwater is gradually stored in the water storage pipe 4, at the moment, the drainage efficiency of the drain hole 13 is smaller than that of the water stored in the first sliding groove 14, at the moment, the buoyancy ball 11 and the buoyancy block 10 are gradually submerged by the rainwater, so that the buoyancy borne by the sealing block 9 is gradually larger than the gravity of the sealing block 9, at the moment, the sealing block 9 is separated from the first sliding block 6, and the rainwater stored in the water storage pipe 4 is drained to the inside of the outer cabinet body 1 through the through groove 8, so that when the rainfall is large, the rainwater amount in the outer cabinet body 1 is instantly increased, and along with the increase of the rainwater amount in the outer cabinet body 1, the airbag 2 can drive the inner cabinet body 3 to float on the water surface under the action of the airbag 2, so that the inner cabinet body 3 rises along with the rise of the water surface, and the probability of water entering the inner cabinet body 3 is reduced;

(3) when the inner cabinet body 3 is lifted, the inner cabinet body 3 drives the hinged shaft 18 to be lifted, and at the moment, the ventilation pipe 19 is inclined in the lifting process of the hinged shaft 18 due to the gravity of the falling block 28, so that the probability that rainwater enters the inner cabinet body 3 through the ventilation pipe 19 is reduced;

(4) in-process that takes place the slope at ventilation pipe 19, the top in the ventilation pipe 19 outside collides with heat dissipation slotted hole 17 inner wall, thereby make shift ring 23 take place to make a round trip to slide in the outside of ventilation pipe 19, second slider 21 slides in second spout 22 is inside, in-process shift ring 23 that rocks at shift ring 23 presses down depression bar 24, thereby make depression bar 24 drive articulated piece 26 through knocking the pole 25 and take place to rotate, knocking pole 25 drives and strikes ball 27 and carry out striking repeatedly to dust screen 20 at this in-process, thereby carry out the clearance of certain degree to the dust of adhesion on dust screen 20, thereby guarantee dust screen 20's ventilation cooling effect.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims

1. The utility model provides a be applied to switch board under tropical monsoon climate, includes outer cabinet body (1), its characterized in that: first sliding grooves (14) are formed in two sides of the top of the inner part of the outer cabinet body (1), an inner cabinet body (3) is arranged in the outer cabinet body (1), first sliding blocks (6) are fixedly arranged at positions, corresponding to the first sliding grooves (14), of two sides of the inner cabinet body (3), the outer cabinet body (1) and the inner cabinet body (3) are in matched sliding connection through the first sliding grooves (14) and the first sliding blocks (6), an air bag (2) is fixedly arranged at the bottom of the inner cabinet body (3), and the bottom of the air bag (2) is in contact with the outer cabinet body (1);

the inside of the outer cabinet body (1) is positioned at two sides of the inner cabinet body (3) and is fixedly provided with a water storage pipe (4), the top of the water storage pipe (4) extends to the outside of the outer cabinet body (1) and is fixedly provided with a water inlet pipe (5), the bottom inside the water storage pipe (4) is provided with a through groove (8), the inside of the through groove (8) is provided with a sealing block (9), the top of the sealing block (9) extends to the outside of the through groove (8), the top of the sealing block (9) is tightly covered above the through groove (8), the top of the sealing block (9) is fixedly provided with a buoyancy block (10), the top of the buoyancy block (10) is fixedly provided with a buoyancy ball (11), two sides of the buoyancy ball (11) are fixedly provided with guide blocks (12), two sides inside the water storage pipe (4) are provided with guide grooves (7), and the guide blocks (12) are connected with the guide grooves (7) in a sliding manner, and the bottoms of two sides in the water storage pipe (4) are provided with water drainage holes (13).

2. The power distribution cabinet applied to tropical monsoon climate according to claim 1, characterized in that: the water inlet pipe (5) is funnel-shaped.

3. The power distribution cabinet applied to tropical monsoon climate according to claim 1, characterized in that: heat dissipation slotted hole (17) have been seted up to the both sides equidistant of the interior cabinet body (3), the front and the back of the inside of heat dissipation slotted hole (17) articulate there are articulated shaft (18), two articulated shaft (18) relative one end is fixed and is provided with ventilation pipe (19), the one end that the interior cabinet body (3) was kept away from in ventilation pipe (19) extends to the outside of the interior cabinet body (3), and the fixed weight piece (28) that is provided with of one end that the interior cabinet body (3) was kept away from at ventilation pipe (19) top, the fixed baffle (15) that is provided with in position department that the standpipe (4) outside and ventilation pipe (19) correspond, the top of baffle (15) contacts with the bottom of ventilation pipe (19).

4. The power distribution cabinet applied to tropical monsoon climate according to claim 3, characterized in that: through holes (16) penetrating through the inner part of the baffle plate (15) are formed in the outer side of the baffle plate (15) at equal intervals.

5. The power distribution cabinet applied to tropical monsoon climate according to claim 3, characterized in that: one end of the ventilation pipe (19), which is far away from the drop block (28), extends into the inner cabinet body (3), and the end of the ventilation pipe (19) is in an upward inclined state.

6. The power distribution cabinet applied to tropical monsoon climate according to claim 3, characterized in that: and a dust screen (20) is fixedly arranged at one end of the interior of the ventilation pipe (19) far away from the drop block (28).

7. The power distribution cabinet applied to tropical monsoon climate according to claim 3, characterized in that: the dust screen is characterized in that a second sliding block (21) is fixedly arranged at one end, close to the dust screen (20), of the outer wall of the ventilation pipe (19), a moving ring (23) is arranged at a position, corresponding to the second sliding block (21), of the outer side of the ventilation pipe (19), a second sliding groove (22) is formed in a position, corresponding to the second sliding block (21), of the inner wall of the moving ring (23), and the moving ring (23) is in sliding connection with the ventilation pipe (19) through the matching of the second sliding groove (22) and the second sliding block (21).

8. The power distribution cabinet applied to tropical monsoon climate according to claim 3, characterized in that: the dustproof net is characterized in that a hinged block (26) is hinged to the position, corresponding to the dustproof net (20), of the outer side of the ventilation pipe (19), a knocking rod (25) is fixedly arranged at one end, away from the ventilation pipe (19), of the hinged block (26), the knocking rod (25) is of an L-shaped structure, a pressing rod (24) is fixedly arranged at one end, close to the moving ring (23), of the knocking rod (25), one end, away from the knocking rod (25), of the pressing rod (24) extends into the moving ring (23), knocking balls (27) are fixedly arranged at one opposite ends of the knocking rods (25), and the outer side of the knocking balls (27) is in contact with the dustproof net (20).

9. The power distribution cabinet applied to tropical monsoon climate according to claim 3, characterized in that: the sum of the masses of all components of the ventilation pipe (19) at the end far away from the drop block (28) is smaller than the mass of the drop block (28).