CN112467569A

CN112467569A - Flood control device for high-voltage power distribution cabinet

Info

Publication number: CN112467569A
Application number: CN202011275919.3A
Authority: CN
Inventors: 孙吉英
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-08
Filing date: 2020-11-16
Publication date: 2021-03-09

Abstract

The invention relates to the technical field of power distribution cabinets, in particular to a flood control device for a high-voltage power distribution cabinet. Comprises an air pressure lifting device, wherein a control device is arranged on the left side of the air pressure lifting device; the control device comprises a first air valve, a second air valve, a floating piece and a transmission mechanism, wherein the first air valve is communicated with the air pressure lifting device and an external air source, the second air valve is communicated with the air pressure lifting device and the atmosphere, a connecting rod mechanism is connected between the first air valve and the second air valve, and the floating piece is connected with the connecting rod mechanism through the transmission mechanism. According to the invention, through the matching of the floating piece, the transmission mechanism and the connecting rod mechanism and depending on the reset force of the spring, the external air source can be switched on or off for the air pressure lifting device in advance and rapidly, so that the air pressure lifting device can respond rapidly, and the power distribution cabinet is prevented from being submerged by flood.

Description

Flood control device for high-voltage power distribution cabinet

Technical Field

The invention relates to the technical field of power distribution cabinets, in particular to a flood control device for a high-voltage power distribution cabinet.

Background

The power distribution cabinet is electrical equipment and is used for reasonably distributing electric energy and facilitating the opening and closing operation of a circuit. The condition of flood and ground ponding can often appear in the lower area of some relief, and the flood can submerge some switch boards that set up subaerial and soak to cause the damage of electric elements, consequently just need come to rise the electrical cabinet temporarily at the flood, in order to avoid it to suffer the damage in the flood.

In the prior art, the lifting of the electric appliance cabinet is realized by adopting a plurality of modes, for example, the application numbers are: 201910045717.0, the authorization notice number is: CN107675801B discloses a flood-control lifting type power distribution cabinet. Wherein, at the top fixedly connected with landing leg guide rail of landing leg, the fixed cylinder that is provided with in both ends of landing leg guide rail, the piston rod of cylinder rotates through the guide pulley and is connected with the lift hinge, the top roll connection of lift hinge has cabinet body guide rail, the top fixedly connected with electricity distribution cabinet body of cabinet body guide rail, the cavity has been seted up in the inside of landing leg, and the bottom of cavity is passed through the blast pipe and is communicated with the air pump, and connecting pipe cylinder intercommunication is passed through at the top of cavity, and the inside of cavity is provided with the piston, and the lateral wall of landing leg is improved level and is provided with the first exhaust hole that link up, the vertical spout that is provided with the first exhaust hole of intercommunication on the lateral wall of landing leg, sliding connection has the seal round pin.

Among the above-mentioned prior art, flood floods the landing leg after coming, and the inflation strip is through the hole that absorbs water inflation on the landing leg, and inflation strip expansion extension promotes the seal pin rebound in order to shelter from first exhaust hole, and the air pump is to the inside conveying gas of landing leg cavity and promote piston upward movement, and when the opening top of connecting pipe was moved to the piston, gas in the cavity entered into inside the cylinder through the connecting pipe and stretches out in order to promote the cylinder pole, and then promoted the lift hinge and fold, so the lift hinge risees the switch board. After the flood is withdrawn, the electric appliance cabinet descends by means of the gravity of the electric appliance cabinet along with the contraction of the expansion strips. However, the legs can be quickly submerged after the arrival of the flood, and the expansion strip takes a certain time to absorb water and expand, so that the response speed is slow, and the electric cabinet can be submerged by the flood without being lifted. The time of the expansion strip that absorbs water inflation simultaneously to and the time of drying shrink is inconsistent, and then makes the air intake and the exhaust velocity of the elevating gear left and right sides inconsistent, leads to the speed of rise inconsistent of switch board down easily, goes up and down unstably.

Disclosure of Invention

According to at least one defect of the prior art, the invention provides a flood control device for a high-voltage power distribution cabinet, which aims to solve the problem that the existing power distribution cabinet is easily submerged by flood due to the fact that the response of a control system is not timely.

The flood control device for the high-voltage power distribution cabinet adopts the following technical scheme:

the device comprises an air pressure lifting device, wherein a power distribution cabinet is arranged on the air pressure lifting device, and a control device is arranged on the left side of the air pressure lifting device;

the control device comprises a first air valve, a second air valve, a floating piece and a transmission mechanism, wherein an air inlet of the first air valve is communicated with an external air source, an air outlet of the first air valve is communicated with the air pressure lifting device, an air inlet of the second air valve is communicated with the air pressure lifting device, and an air outlet of the second air valve is communicated with the atmosphere;

a connecting rod mechanism is connected between the first air valve and the second air valve, the floating piece is connected with the connecting rod mechanism through the transmission mechanism, so that when the floating piece floats upwards under the action of flood, the connecting rod mechanism is driven to move through the transmission mechanism, the second air valve is controlled to be closed by the connecting rod mechanism, meanwhile, the first air valve is controlled to be connected with an external air source and an air pressure lifting device, air enters the air pressure lifting device through the first air valve, and the air pressure lifting device lifts the power distribution cabinet; and when the floating piece falls back, the transmission mechanism drives the connecting rod mechanism to move, so that the connecting rod mechanism controls the first air valve to cut off an external air source and the air pressure lifting device, and simultaneously controls the second air valve to be opened, and air in the air pressure lifting device is discharged through the second air valve, so that the air pressure lifting device drives the power distribution cabinet to fall back to an initial position.

Optionally, the control device further comprises a frame, and the floating piece and the transmission mechanism are both located inside the frame;

the transmission mechanism comprises a gear, a fixed rack, a movable rack and a guide post, the fixed rack and the guide post are respectively and fixedly arranged on the left side and the right side of the frame, and the movable rack is inserted on the guide post in a sliding manner;

the gear is meshed with the fixed rack and the movable rack, is rotatably arranged on the floating piece and moves up and down along the fixed rack along with the floating piece, and drives the movable rack to move up and down; the connecting rod mechanism is connected to the right end face of the movable rack.

Optionally, the link mechanism includes a first crank arm, a second crank arm, a first link, a second link, and a pin, a first air valve rod extending in the vertical direction is slidably disposed inside the first air valve, and a second air valve rod extending in the vertical direction is slidably disposed inside the second air valve;

one end of the first crank arm and one end of the second crank arm are located at the same height and are rotatably mounted on the frame, the other ends of the first crank arm and the second crank arm are hinged to the pin post, one end of the first connecting rod is hinged to the first air valve rod, one end of the second connecting rod is hinged to the second air valve rod, and the other end of the first connecting rod and the other end of the second connecting rod are hinged to the pin post;

the pin post is rotatably provided with a sleeve, the sleeve is positioned between the first connecting rod and the second connecting rod, and the right end face of the movable rack is connected with a spring between the sleeves.

Optionally, the air pressure lifting device comprises a support, an air cylinder and a bearing plate, the air cylinder is vertically fixed on the support, an air cylinder rod is arranged in the air cylinder, the bearing plate is installed at the upper end of the air cylinder rod, and the power distribution cabinet is installed on the bearing plate.

Optionally, the external air source is a pneumatic pump arranged inside the power distribution cabinet, the pneumatic pump is communicated with an air inlet of the first air valve through an air inlet pipe, the external atmosphere is communicated with an air outlet of the second air valve through an air outlet pipe, the air outlet of the first air valve is communicated with an air inlet of the air cylinder through an air delivery pipe assembly, and the air inlet of the second air valve is communicated with an air inlet of the air cylinder through an air delivery pipe assembly;

and the outlet end of the exhaust pipe is provided with a one-way valve.

Optionally, an air inlet window is arranged at the lower part of the power distribution cabinet, and the pneumatic pump is provided with an air relief valve.

Optionally, the right end face of the frame is provided with two crank arm seats, and the first crank arm and the second crank arm are rotatably mounted inside the two crank arm seats through bearings respectively.

Optionally, the frame is enclosed by a strut and a reinforcing frame, the strut is provided with four corners to form the frame, and the two crank arm seats are respectively located on the two struts on the right side;

the two groups of reinforcing frames are respectively positioned at the upper end part and the lower end part of the support columns, each group of reinforcing frames comprises four reinforcing columns, and the four reinforcing columns are sequentially connected among the four support columns;

and a grid rod is arranged between the two groups of reinforcing frames, is connected with the two reinforcing columns which correspond to each other up and down and is attached to the floating piece.

Optionally, the right end face of the movable rack and the sleeve are both provided with a spring hanging ring, and the spring is mounted on the spring hanging ring.

Optionally, the first air valve further has an air overflow channel, one end of the air overflow channel is communicated with the air inlet of the first air valve, and the other end of the air overflow channel is communicated with the atmosphere; the first air valve is configured to: before the connecting rod mechanism controls the air inlet of the first air valve to be communicated with the air pressure lifting device, the air inlet of the first air valve is communicated with the atmosphere through the air overflow channel, and the air inlet and the air outlet of the first air valve are cut off; and cutting off the air overflow channel after the air inlet and the air outlet of the first air valve are communicated.

The invention has the beneficial effects that: the invention relates to a flood control device for a high-voltage power distribution cabinet, wherein a transmission mechanism comprises a fixed rack, a movable rack and a gear, the gear is rotatably installed on a floating piece and moves up and down along the fixed rack along with the floating piece, and drives the movable rack to move up and down, namely the gear rolls on the fixed rack, because the gear drives the movable rack to ascend through meshing transmission in the process of rolling up and down on the fixed rack, the upward moving distance of the movable rack is twice of the upward floating distance of the floating piece, so that the function of triggering an air pressure lifting device to start in advance is achieved, and the power distribution cabinet is prevented from being submerged due to the fact that the flood water level rises too fast.

The invention is provided with a floating piece, a transmission mechanism, a first air valve and a second air valve, wherein a connecting rod mechanism is arranged between the first air valve and the second air valve, and a spring is arranged between the transmission mechanism and the connecting rod mechanism. When the flood water level rose, the piece that floats relied on buoyancy to rise to drive the spring upward movement through drive mechanism, after the spring crossed the relevant position, link mechanism's sleeve relied on the pulling force of spring to be upwards pulled up rapidly, and then made second connecting rod downstream and promoted second air valve pole and close the second pneumatic valve downwards, first connecting rod rebound simultaneously and promote first air valve pole upward movement, first pneumatic valve and atmospheric pressure elevating gear intercommunication, atmospheric pressure elevating gear moves rapidly and rises the switch board. After the flood is withdrawn, the floating part falls back and drives the spring to move downwards through the transmission mechanism, so that the first air valve cuts off an external air source of the air pressure lifting device, meanwhile, the second air valve is opened, gas in the air pressure lifting device is discharged through the second air valve, and the electric appliance cabinet falls back to the initial position. According to the invention, through the matching of the floating piece, the transmission mechanism and the connecting rod mechanism, an external air source can be quickly connected or disconnected for the air pressure lifting device by depending on the reset force of the spring, so that the air pressure lifting device can quickly respond, and the power distribution cabinet is prevented from being submerged by flood.

Drawings

In order to illustrate more clearly the embodiments of the invention or the solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained by those skilled in the art without inventive exercise from these drawings, it being understood that these drawings are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of a flood control device of a high-voltage distribution cabinet according to the present invention;

FIG. 2 is a schematic structural diagram of a control device according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a structural diagram of the placement of the distribution cabinet when the air pressure elevating device is not elevated in the present invention;

FIG. 5 is a cross-sectional structural view of the control device when the float is at the lower end of the present invention;

FIG. 6 is a cross-sectional view showing the placement of the power distribution cabinet when the air pressure elevating device is not lifted;

FIG. 7 is a sectional view showing the structure of the control device after the float member floats;

FIG. 8 is a sectional view showing the arrangement of the power distribution cabinet after the air pressure lifting device is lifted;

FIG. 9 is a cross-sectional structural view of the control device with the float at the lower end in accordance with another embodiment of the present invention;

fig. 10 is a sectional structural view of a control device after a floating member floats in another embodiment of the invention.

In the figure: 1. a first air valve; 2. a float member; 3. a second air valve; 4. a power distribution cabinet; 5. a cylinder; 6. a top plate; 7. a pillar; 8. fixing a rack; 9. a connecting plate; 10. a second crank arm; 11. a gate rod; 12. a base plate; 13. a first flange; 14. an air inlet pipe; 15. a suspension; 16. a guide post; 17. a first gas delivery pipe; 18. a first crank arm; 19. a sleeve; 20. a spring; 21. a pin; 22. a crank arm seat; 23. a fourth gas delivery pipe; 24. an exhaust pipe; 25. a movable rack; 26. a one-way valve; 27. a pneumatic pump; 28. a second gas delivery pipe; 29. a connecting bolt; 30. a column; 31. a third gas delivery pipe; 32. a carrier plate; 33. an air inlet window; 34. a three-way joint; 35. a four-way joint; 36. a second flange; 37. a fixing plate; 38. a reinforcement column; 39. a gear; 40. a rotating shaft; 41. a key; 42. a first air valve stem; 43. a first link; 44. a second link; 45. a spring suspension loop; 46. a second air valve stem; 47. a cylinder rod; 48. connecting columns; 49. a bearing; 50. and an air overflow channel.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 8, the flood control device for the high-voltage power distribution cabinet comprises an air pressure lifting device provided with a power distribution cabinet 4, and a control device is arranged on the left side of the air pressure lifting device. The control device comprises a first air valve 1, a second air valve 3, a floating part 2 and a transmission mechanism, wherein an air inlet of the first air valve 1 is communicated with an external air source, an air outlet of the first air valve 1 is communicated with an air pressure lifting device, an air inlet of the second air valve 3 is communicated with the air pressure lifting device, and an air outlet of the second air valve 3 is communicated with the atmosphere.

A connecting rod mechanism is connected between the first air valve 1 and the second air valve 3, the floating piece 2 is connected with the connecting rod mechanism through a transmission mechanism, so that when the floating piece 2 floats upwards under the action of flood, the transmission mechanism drives the connecting rod mechanism to move, the connecting rod mechanism controls the second air valve 3 to be closed, meanwhile, the first air valve 1 is controlled to be connected with an external air source and an air pressure lifting device, air enters the air pressure lifting device through the first air valve 1, and the air pressure lifting device lifts the power distribution cabinet 4; and when the floating piece 2 falls back, the transmission mechanism drives the connecting rod mechanism to move, so that the connecting rod mechanism controls the first air valve 1 to cut off the air source and the air pressure lifting device, and simultaneously controls the second air valve 3 to be opened, the air in the air pressure lifting device is discharged through the second air valve 3, and the air pressure lifting device drives the power distribution cabinet 4 to fall back to the initial position.

The control device also comprises a frame, and the floating part 2 and the transmission mechanism are positioned inside the frame. The transmission mechanism comprises a gear 39, a fixed rack 8, a movable rack 25 and a guide post 16, the fixed rack 8 and the guide post 16 are respectively and fixedly installed on the left side and the right side inside the frame, and the movable rack 25 is inserted outside the guide post 16 in a sliding mode. The gear 39 is engaged with the fixed rack 8 and the movable rack 25, the gear 39 is rotatably mounted on the float member 2 and moves up and down along the movable rack 8 together with the float member 2, and drives the fixed rack 25 to move up and down, and the link mechanism is connected to the right end surface of the movable rack 25. Specifically, the float member 2 comprises a first buoyancy tank and a second buoyancy tank which are fixedly connected through a connecting plate 9, and the connecting plate 9 is provided with 2 buoyancy tanks which are respectively arranged at the upper end and the lower end of the first buoyancy tank and the second buoyancy tank. The first and second buoyancy chambers are installed to be movable up and down outside the fixed rack 8 and the movable rack 25. A rotating shaft 40 is arranged between the first floating box and the second floating box through a bearing, and a gear 39 is arranged on the rotating shaft 40 and drives the rotating shaft 40 to rotate through a key 41.

The link mechanism includes a first crank arm 18, a second crank arm 10, a first link 43, a second link 44, and a pin 21. The first air valve 1 is provided with a first air valve rod 42 extending in the vertical direction in a sliding manner, and the second air valve 3 is provided with a second air valve rod 46 extending in the vertical direction in a sliding manner. One end of the first crank arm 18 and one end of the second crank arm 10 are at the same height and are rotatably mounted on the frame, and the other ends of the first crank arm 18 and the second crank arm 10 are hinged with the pin 21. One end of the first link 43 is hinged to the first air valve rod 42, one end of the second link 44 is hinged to the second air valve rod 46, the other end of the first link 43 and the other end of the second link 44 are hinged to the pin 21, and the first link 43 and the second link 44 are located between the first crank arm 18 and the second crank arm 10. A sleeve 19 is rotatably mounted on the pin 21 between the first link 43 and the second link 44, a spring 20 is connected between the right end surface of the movable rack 25 and the sleeve 19, and the spring 20 is an extension spring. Specifically, the right end face of the frame is provided with the crank arm base 22, the inside of the crank arm base 22 is provided with the bearing 49, the number of the crank arm bases 22 is two, and the first crank arm 18 and the second crank arm 10 are rotatably mounted inside the two crank arm bases 22 through the bearing 49 respectively.

The floating piece 2 floats upwards under the buoyancy action of flood and drives the gear 39 to move upwards, the gear 39 is meshed with the fixed rack 8 and the movable rack 25 to rotate in the process of moving upwards and simultaneously drives the movable rack 25 to move upwards along the guide column 16, and the movable rack 25 moves upwards to pull the spring 20 to move upwards. When the left end of the spring 20 moves around the sleeve 19 to the fixed point (fixed point) of the spring 20 on the movable rack 25, the fixed rotation point (rotation point) of the first crank arm 18 and the second crank arm 10 on the frame, and the connection lines of the hinge points (hinge points) of the first crank arm 18, the second crank arm 10, the first link 43 and the second link 44 are in the same straight line, the force-bearing direction of the sleeve 19 extends along the same straight line, when the left end of the spring 20 continues to move upwards and crosses the same straight line, namely after the spring 20 passes the first position upwards, the spring 20 generates an upward component force to the pulling force of the sleeve 19, the sleeve 19 is rapidly pulled upwards under the component force, and the tensioning state is kept, during the process that the sleeve 19 is pulled upwards, the second link 44 moves downwards and pushes the second air valve rod 46 to move downwards so as to close the second air valve rod 3, and simultaneously the first link 43 moves upwards and pushes the first air valve rod 42, so that the first air valve 1 is communicated with an external air source and the air pressure lifting device, and the air pressure lifting device lifts the power distribution cabinet 3. When the floating piece 2 falls back, the movable rack 25 moves downwards and pulls the spring 20 to move downwards, when the left end of the spring 20 crosses a new straight line position formed by a new fixed point, a new rotating point and a new hinge point, namely the spring 20 crosses a second position downwards, the spring 20 generates a downward component force to the pulling force of the sleeve 19, the sleeve 19 is pulled back downwards rapidly under the component force, the tensioning state is kept, the first air valve 1 cuts off the air source of the air pressure lifting device, meanwhile, the second air valve 3 is opened, and the air pressure lifting device drives the power distribution cabinet 4 to fall back to the initial position.

Through the cooperation of link mechanism, float piece and drive mechanism, after the flood water level reachd the take the altitude, rely on spring 20's effort, can be rapid for atmospheric pressure elevating gear switch-on outside air supply, make atmospheric pressure elevating gear respond rapidly, avoid the flood to submerge switch board 4. Meanwhile, the gear 39 drives the movable rack 25 to move upwards in the process of floating along with the floating piece 2 and drives the movable rack 25 to move up and down, namely the gear 39 rolls on the fixed rack 8, and the movable rack 25 is driven to ascend through meshing transmission in the process of rolling up and down on the fixed rack 8, so that the upward moving distance of the movable rack 25 is twice of the floating distance of the floating piece 2, the effect of starting the air pressure lifting device in advance can be achieved, and the power distribution cabinet is prevented from being submerged by flood due to the fact that the flood water level rises too fast.

Atmospheric pressure elevating gear includes support, cylinder 5 and loading board 32, and cylinder 5 is vertical to be fixed on the support, and the inside of cylinder 5 is provided with cylinder pole 47, and loading board 32 fixed mounting is in cylinder pole 47's upper end, and loading board 32 is used for installing switch board 4, and loading board 32's position is higher than controlling means's height. The cylinders 5 are four and are respectively positioned at four corners of the bearing plate 32, so that the bearing plate 32 is stressed in a balanced manner, and the power distribution cabinet 4 can be conveniently and stably lifted along with the cylinders 5. Specifically, the upper end surface of the cylinder rod 47 is provided with screw holes, four corners of the carrier plate 32 are provided with through holes, and the carrier plate 32 is mounted to the upper end of the cylinder rod 47 by inserting the connecting bolts 29 into the through holes to be connected to the screw holes. The support includes stand 30 and fixed plate 37, and fixed plate 37 is located the upper end of stand 30, and cylinder 5 is vertical to be connected on fixed plate 37, and stand 30 and fixed plate 37 are corresponding to be provided with four.

The outside air supply is the pneumatic pump 27 that sets up in switch board 4 inside, and pneumatic pump 27 passes through the air inlet of 14 intercommunication first pneumatic valves 1 of intake pipe, and outside atmosphere passes through the gas vent of blast pipe 24 intercommunication second pneumatic valve 3, and the gas vent of first pneumatic valve 1 passes through the air inlet of four cylinders 5 of air pipe subassembly intercommunication, and the air inlet of second pneumatic valve 3 passes through the air inlet of four cylinders 5 of air pipe subassembly intercommunication. Further, the air conveying pipe assembly comprises a first air conveying pipe 17, a second air conveying pipe 28, a third air conveying pipe 31 and a fourth air conveying pipe 23; wherein, the second air pipe 28 communicates the air inlets of the two cylinders 5 on the left side, the third air pipe 31 communicates the air inlets of the two cylinders 5 on the right side, the first air pipe 17 connects the exhaust port of the first air valve 1, the second air pipe 28 and the third air pipe 31 in sequence, and the fourth air pipe 23 communicates the first air pipe 17 and the air inlet of the second air valve 3. Further, the first air duct 17 communicates with the second air duct 28 through a four-way joint 35, and the first air duct 15 communicates with the third air duct 31 and the fourth air duct 23 through two three-way joints 34, respectively.

The outlet end of the exhaust pipe 24 is provided with a one-way valve 26, and the one-way valve 26 can ensure that gas can only be discharged through the second gas valve 3, so that external gas and flood are prevented from entering the interior of the gas transmission pipe assembly.

In this embodiment, the lower part of switch board 3 is provided with air inlet window 33, and air inlet window 33 and air pressure pump 27 cooperate, can give the switch board 4 heat dissipation. The pneumatic pump 27 has a relief valve to ensure reliable operation of the pneumatic pump 27.

In the present embodiment, the frame is formed by enclosing the pillars 7 and the reinforcing frame, and the pillars 7 are provided with four so as to form four corners of the frame. The reinforcing frames are arranged in two groups and are respectively positioned at the upper end part and the lower end part of the supporting columns 7, each group of reinforcing frames comprises four reinforcing columns 38, and the four reinforcing columns 38 are sequentially connected among the four supporting columns 7. A grid rod 11 is arranged between the two groups of reinforcing frames, and the grid rod 11 is connected with the two reinforcing columns 38 which are corresponding up and down and is attached to the floating piece 2. The grid rods 11 are arranged to limit the moving space of the floating piece 2, so that the floating piece 2 is prevented from floating all around after being impacted by flood, and the operation reliability of the transmission mechanism is further ensured. The grid rods 11 are smooth columnar structures, so that the mutual friction between the grid rods 11 and the floating piece 2 can be reduced, and the number of the grid rods 11 can be two, three or other according to needs.

In this embodiment, the top plate 6 is disposed at the bottom of the upper reinforcing frame, the bottom plate 12 is disposed at the bottom of the lower reinforcing frame, two bottom plates 12 are disposed and connected to two reinforcing posts 38, respectively, and the fixed rack 8 and the guide post 16 are disposed between the top plate 6 and the bottom plate 12, respectively. The right end surfaces of the two left struts 7 are respectively provided with a suspension 15, and the first air valve 1 and the second air valve 3 are both arranged on the struts 7 through the suspensions 15. Spring hanging rings 45 are arranged on the right end face of the movable rack 25 and the sleeve 19, and the spring 20 is installed on the spring hanging rings 45. The lower ends of the four supporting columns 7 are provided with first flanges 13, the lower ends of the four upright columns 30 are provided with second flanges 36, and the first flanges 13 and the second flanges 36 are fixedly connected with the ground through foundation bolts.

In the present embodiment, the first air valve 1 and the second air valve 3 are provided with elastic members. The protruding ends of the first air valve rod 42 and the second air valve rod 46 are provided with connecting columns 48, and the first connecting rod 43 and the second connecting rod 44 are hinged to the connecting columns 48 to be connected with the first air valve rod 42 and the second air valve rod 46.

With the above embodiment, the use principle and the working process of the present invention are as follows:

under normal condition, the piece that floats 2 relies on the dead weight to be in the bottommost of frame, and first pneumatic valve 1 cuts off pneumatic pump 27 and pneumatic lifting device's intercommunication passageway, opens second pneumatic valve 3 simultaneously, and pneumatic lifting device is out of work, and switch board 4 is in normal station.

The pneumatic pump 27 is in a normally open state, after flood comes, the floating part 2 floats upwards through buoyancy, the gear 39 is driven to move upwards, the gear 39 rotates in a meshing mode with the fixed rack 8 and the movable rack 25 in the upward movement process, the rack 25 is driven to move upwards along the guide post 16 at a speed twice of the upward movement speed of the floating part 2, the spring 20 is driven to move upwards while the guide post 16 moves upwards, after the spring 20 passes through the first position, the sleeve 19 is rapidly pulled upwards by the acting force of the spring 20, the second air valve 3 is closed, the first air valve 1 is communicated with the pneumatic lifting device through the pneumatic pump 27, an external air source is connected, the air cylinder 5 rapidly works, and the power distribution cabinet 4 is lifted.

After the flood slowly fades, the floating piece 2 slowly descends and drives the movable rack 25 to slide downwards, the spring 20 is driven to move downwards while the movable rack 25 slides downwards, the sleeve 19 is pulled to move downwards after the spring 20 passes through the second position, so that the first air valve rod 42 controls the first air valve 1 to cut off the air pressure lifting device and an external air source, meanwhile, the second air valve rod 46 controls the second air valve 3 to be opened, the air in the air cylinder 5 is discharged, and the power distribution cabinet 4 slowly descends.

In other embodiments of the present invention, as shown in fig. 9 and 10, the first air valve 1 further has an air overflow passage 50, one end of the air overflow passage 50 is communicated with the air inlet of the first air valve 1, and the other end of the air overflow passage 50 is communicated with the atmosphere. The first gas valve 1 is configured to: between the connection of the first air valve 1 and the air pressure lifting device controlled by the link mechanism, the air inlet of the first air valve is communicated with the atmosphere through the air overflow channel 50, the air inlet and the air outlet of the first air valve 1 are cut off, and then the air of the air pressure pump 27 is discharged through the air overflow channel 50; the air inlet and the air outlet of the first air valve 1 are communicated and then the air overflow channel is cut off, air enters the air pressure lifting device through the air inlet and the air outlet of the first air valve 1, and the air pressure lifting device rapidly acts to lift the power distribution cabinet 4. The air overflow channel 50 is arranged to further ensure the normal operation of the pneumatic pump 27 and prolong the service life of the pneumatic pump 27.

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 high voltage distribution cabinet flood control device which characterized in that: the device comprises an air pressure lifting device, wherein a power distribution cabinet is arranged on the air pressure lifting device, and a control device is arranged on the left side of the air pressure lifting device;

2. The flood protection device for the high-voltage power distribution cabinet according to claim 1, wherein: the control device also comprises a frame, and the floating piece and the transmission mechanism are both positioned in the frame;

3. The flood protection device for the high-voltage power distribution cabinet according to claim 2, wherein: the connecting rod mechanism comprises a first crank arm, a second crank arm, a first connecting rod, a second connecting rod and a pin column, a first air valve rod extending in the vertical direction is arranged in the first air valve in a sliding mode, and a second air valve rod extending in the vertical direction is arranged in the second air valve in a sliding mode;

4. The flood protection device for the high-voltage power distribution cabinet according to claim 1, wherein: the air pressure lifting device comprises a support, an air cylinder and a bearing plate, wherein the air cylinder is vertically fixed on the support, an air cylinder rod is arranged in the air cylinder, the bearing plate is arranged at the upper end of the air cylinder rod, and the power distribution cabinet is arranged on the bearing plate.

5. The flood protection device for the high-voltage power distribution cabinet according to claim 4, wherein: the external air source is a pneumatic pump arranged in the power distribution cabinet, the pneumatic pump is communicated with an air inlet of the first air valve through an air inlet pipe, external atmosphere is communicated with an air outlet of the second air valve through an exhaust pipe, the air outlet of the first air valve is communicated with an air inlet of the air cylinder through an air conveying pipe assembly, and the air inlet of the second air valve is communicated with an air inlet of the air cylinder through an air conveying pipe assembly;

and the outlet end of the exhaust pipe is provided with a one-way valve.

6. The flood protection device for the high-voltage power distribution cabinet according to claim 5, wherein: the lower part of the power distribution cabinet is provided with an air inlet window, and the pneumatic pump is provided with an air overflow valve.

7. The flood protection device for the high-voltage power distribution cabinet according to claim 1, wherein: the right end face of the frame is provided with two crank arm seats, and the first crank arm and the second crank arm are rotatably installed on the two crank arm seats through bearings respectively.

8. The flood protection device for the high-voltage power distribution cabinet according to claim 7, wherein: the frame is formed by enclosing a support column and a reinforcing frame, the support column is provided with four corners for forming the frame, and the two crank arm seats are respectively positioned on the two support columns on the right side;

9. The flood protection device for the high-voltage power distribution cabinet according to claim 2, wherein: and the right end surface of the movable rack and the sleeve are both provided with spring hanging rings, and the springs are arranged on the spring hanging rings.

10. The flood protection device for the high-voltage power distribution cabinet according to claim 5, wherein: the first air valve is also provided with an air overflow channel, one end of the air overflow channel is communicated with the air inlet of the first air valve, and the other end of the air overflow channel is communicated with the atmosphere; the first air valve is configured to: before the connecting rod mechanism controls the air inlet of the first air valve to be communicated with the air pressure lifting device, the air inlet of the first air valve is communicated with the atmosphere through the air overflow channel, and the air inlet and the air outlet of the first air valve are cut off; and cutting off the air overflow channel after the air inlet and the air outlet of the first air valve are communicated.