Flame-retardant low-voltage draw-out switch cabinet

Abstract

The invention discloses a flame-retardant low-voltage draw-out type switch cabinet which comprises a cabinet body, a cabinet cover arranged at the top of the cabinet body, a collecting device for collecting water and a melting device for melting freezing rain. The cabinet cover is arranged to be inverted V-shaped, so that snow water is convenient to leave; the collecting device comprises a spreading mechanism arranged on the top of the cabinet cover, a collecting box arranged on the side wall of the cabinet body, a control mechanism and a beating mechanism used for beating the cabinet cover. The spreading mechanism is used for spreading salt towards the surface of the cabinet cover and accelerating snow melting, a water inlet is formed in the side wall of the collecting box, and the control mechanism is used for controlling opening / closing of the water inlet. The switch cabinet has the effect of melting freezing rain on the side wall of the cabinet body, and the performance of adapting to severe environments of the switch cabinet is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric drive switch cabinet equipment, and in particular to a flame retardant low-voltage withdrawable switch cabinet. Background Art

[0002] At present, low-voltage withdrawable switchgear is widely used in power distribution centers PC and motor control centers MCC in power plants, substations, factories, mines and high-rise buildings, as low-voltage complete distribution devices used for power distribution, motor centralized control and reactive power compensation in power generation and power supply systems with AC 50-60Hz, rated working voltage of 660V and below, and rated current of 4000A and below. The existing low-voltage withdrawable switchgear has relatively simple functions, and the internal equipment is often damaged due to the infiltration of rainwater. At the same time, due to the excessive number of parts inside the low-voltage withdrawable switchgear, the heat generated cannot be dissipated in time, which seriously affects the service life of the low-voltage withdrawable switchgear.

[0003] In the related art, a Chinese patent with application number CN201621410841.0 proposes a practical low-voltage withdrawable switch cabinet, including a switch cabinet housing, a drawer is installed on the switch cabinet housing, an electronic fingerprint anti-theft lock is fixed at the center of the surface of the drawer, a rainwater collection tank is installed on the top of the switch cabinet housing, a water outlet pipe is connected to one side of the rainwater collection tank, a supporting bottom plate is installed at the bottom of the switch cabinet housing, and a horizontal busbar room, a cable inlet and outlet room and an electrical room are installed inside the switch cabinet housing, the electrical room is located on one side of the cable inlet and outlet room, and the horizontal busbar room is located above the cable inlet and outlet room. A high-strength flame-retardant insulating board is provided between the horizontal busbar room, the cable inlet and outlet room and the electrical room, and the high-strength flame-retardant insulating board can isolate the three rooms to prevent damage to the internal parts of other rooms caused by a fire caused by a short circuit in one room, making it safer and more reliable to use.

[0004] With respect to the above-mentioned related technologies, the inventors believe that there are the following defects: since the switch cabinet is set outdoors, if there is bad weather, such as freezing rain and snow, the cabinet body of the switch cabinet is prone to freezing rain. If the freezing rain or ice is not cleaned up in time, it will affect the normal operation of the switch cabinet itself. Summary of the invention

[0005] In order to improve the problem that freezing rain and ice on the side walls of the cabinet affect normal use, the present application provides a flame-retardant low-voltage withdrawable switch cabinet.

[0006] The flame-retardant low-voltage withdrawable switchgear provided in this application adopts the following technical solution: A flame-retardant low-voltage withdrawable switch cabinet, comprising a cabinet body, a cabinet cover arranged on the top of the cabinet body, a collection device for collecting water, and a melting device for melting freezing rain; the cabinet cover is arranged in an inverted V shape to facilitate the retention of snow and water; The collecting device comprises a spreading mechanism arranged on the top of the cabinet cover, a collecting box arranged on the side wall of the cabinet, a control mechanism and a knocking mechanism for knocking the cabinet cover; The spreading mechanism is used for spreading salt toward the cabinet cover surface to accelerate snow melting. The side wall of the collection box is provided with a water inlet, and the control mechanism is used for controlling the opening / closing of the water inlet.

[0007] Optionally, the spreading mechanism includes a storage cylinder, an arc-shaped plate, and a power motor for controlling the rotation of the arc-shaped plate. The storage cylinder is fixed at the highest point of the cabinet cover. The storage cylinder is provided with two discharge ports relative to the symmetrical plane of the cabinet cover. The arc-shaped plate is rotatably provided on the cabinet cover and fits the storage cylinder.

[0008] Optionally, the knocking assembly includes a knocking rod and a reciprocating part, wherein two knocking rods are provided and elastically arranged on both sides of the cabinet cover respectively, and when the arc plate rotates toward the corresponding side of the cabinet cover, the knocking rod knocks the corresponding side wall of the cabinet cover, and the reciprocating part realizes the reciprocating motion of the knocking rod.

[0009] Optionally, the reciprocating part includes an arc gear, two racks, two reciprocating plates and two electromagnets for adsorbing the knocking rod, the arc gear is fixedly connected to the outer wall of the arc plate, the rack is meshingly connected to the arc gear, the electromagnet adsorbs the reciprocating plate, the rack is fixedly connected to the electromagnet, and the reciprocating plate is fixedly connected to the corresponding knocking rod.

[0010] Optionally, the melting device includes an adjusting mechanism for providing a heating agent, a melting box, a bladder, and a traction mechanism for pulling the bladder. The bladder receives water or a heating agent. A temperature sensor is also provided in the bladder. A water outlet valve electrically connected to the temperature sensor is also provided at the bottom of the bladder. The melting box is fixed on the cabinet and is located above the collection box.

[0011] Optionally, the adjustment mechanism includes multiple non-woven bags, an adjustment rope, a winding roller, a winding motor, and a cutting assembly for cutting the adjustment rope, the multiple non-woven bags are arranged on the adjustment rope, one end of the adjustment rope is fixedly connected to the outer peripheral wall of the winding roller, the winding motor controls the rotation of the winding roller, the melting box is provided with a feeding port, the leather bag is initially positioned directly below the feeding port, the non-woven bag is filled with a heating agent, and the cutting assembly is arranged at the feeding port close to the end of the melting box.

[0012] Optionally, the cutting assembly includes a plurality of cloth strips, an extrusion plate and an extrusion electric push rod, the cloth strips are provided with a plurality of tear holes, the cloth strips are used to connect the adjustment rope and the non-woven bag, and the extrusion electric push rod is arranged in the melting box.

[0013] Optionally, the collecting box is provided with a water outlet, the tail end of the water outlet is vertically connected with a vertical port, the water outlet is slidably adapted in the collecting box, the vertical port is provided with two relatively movable support plates, the vertical port is provided with a transmission assembly for realizing the relative movement of the two support plates, and the vertical port is provided with a solenoid valve.

[0014] Optionally, the transmission assembly includes a double-headed threaded rod, a transmission motor, a sliding rod and two sliders. The double-headed threaded rod is rotatably arranged on the outer wall of the vertical opening, the sliding rod is fixedly connected to the outer wall of the vertical opening, the transmission motor controls the rotation of the double-headed threaded rod, the two sliders are slidably sleeved outside the sliding rod, and the two sliders are respectively screwed together at the two ends of the double-headed threaded rod, and the two sliders are respectively fixedly connected to the two support plates.

[0015] Optionally, the cabinet is also slidably provided with a guide roller, the interior of the guide roller is filled with antifreeze liquid, a plurality of fine holes are provided on the peripheral wall of the guide roller, an adsorption piece is provided outside the fine holes of the guide roller, and the traction rope rubs against the adsorption piece.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. In the initial state, the arc gear is meshed with the two racks. When the arc plate rotates in one direction, the rack in the corresponding opposite direction moves upward. At this time, the electromagnet is adsorbed on the reciprocating plate, and the knocking rod also moves upward and squeezes and deforms the spring. After the electromagnet is powered off, the knocking rod is driven to move in the direction under the elastic force of the spring. The end of the knocking rod is set as a tip, which is convenient for the knocking rod to break the ice on the corresponding side wall of the cabinet cover; and the rack in the same direction moves downward. The knocking rod in this direction contacts the corresponding side wall of the cabinet cover in the initial state. At this time, the electromagnet follows the rack to move downward until it moves to the position adsorbed with the reciprocating plate, and then when the arc plate rotates in the other direction, the knocking rod can be pulled upward, which is convenient for the subsequent knocking of the corresponding side wall of the cabinet cover; at the same time, the salt rolls down from the discharge port and slides down along the inclined side of the cabinet cover, thereby achieving the effect of spreading salt and accelerating melting; 2. When the non-woven bag falls to the leather bag, the traction roller starts to release the traction rope. When the leather bag falls below the vertical port, the water outlet extends. After the vertical port is located below the leather bag, the leather bag is controlled to move upward, and the traction rope is wound by the traction roller until the lower end of the vertical port is close to the opening of the leather bag. The transmission motor starts to work, and the two sliders on the double-headed threaded rod move away from each other along the slide rod. The opening plate opens the leather bag so that the vertical port can completely enter the leather bag. The solenoid valve on the vertical port is started, and water begins to enter the solenoid valve. After the water in the leather bag contacts with quicklime, it begins to release a large amount of heat. The leather bag and the hot water in the leather bag continue to be controlled to move downward and contact with the side wall of the cabinet. After the hot water in the leather bag contacts with the cabinet, the freezing rain on the side wall of the cabinet is quickly melted; 3. After multiple contacts with the cabinet, the position of the bracket can also be adjusted to melt the freezing rain in other parts of the cabinet until the temperature sensor detects that the water temperature in the bag is lower than the temperature that can melt the ice. At this time, it is necessary to control the water outlet valve to open and reheat the non-woven bag and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 yes Figure 1 A magnified schematic diagram of part A; Figure 3 is a schematic diagram of a storage cylinder and an arc-shaped plate in an embodiment of the present application; Figure 4 yes Figure 1 A magnified schematic diagram of part B; Figure 5 Schematic diagram of a non-woven fabric strip and a non-woven fabric bag in an embodiment of the present application; Figure 6 is a schematic diagram of an adsorption member and a guide roller in an embodiment of the present application; Figure 7 It is a schematic diagram of the support plate and the transmission assembly in the embodiment of the present application.

[0018] 1. Cabinet body; 2. Cabinet cover; 3. Water inlet; 4. Control panel; 5. Arc plate; 6. Storage cylinder; 7. Power motor; 8. Beating rod; 9. Arc gear; 10. Slide cylinder; 11. Spring; 12. Rack; 13. Reciprocating plate; 14. Electromagnet; 15. Melting box; 16. Leather bag; 17. Traction roller; 18. Traction rope; 19. Temperature sensor; 20. Water outlet valve; 21. Non-woven bag; 22. Adjusting rope; 23. Winding roller; 24. Feeding port; 25. Cloth strip; 26. Extrusion plate; 27. Extrusion electric push rod; 28. Water outlet; 29. ​​Vertical port; 30. Opening plate; 31. Double-headed threaded rod; 32. Transmission motor; 33. Slide rod; 34. Sliding block; 35. Guide roller; 36. Fine hole; 37. Adsorption part; 38. Collection box; 39. Tearing port. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-7 This application is described in further detail.

[0020] The embodiment of the present application discloses a flame retardant low voltage withdrawable switch cabinet. Figure 1-Figure 7A flame-retardant low-voltage withdrawable switch cabinet includes a cabinet body 1, a cabinet cover 2 arranged on the top of the cabinet body 1, a collection device for collecting water, and a melting device for melting freezing rain; For electrical protection, the following should be noted: (1) Preventing the wrong opening and closing of circuit breakers: At present, due to technical reasons, suggestive measures can be taken to prevent misoperation. Prevent pulling and closing the disconnector or trolley contact under load: In the operation of the power system, the function of the disconnector is to isolate the high-voltage power supply to ensure the safety of maintenance personnel. If the disconnector is operated under load, it will cause arc burning and cause a short circuit fault; (2) Prevent hanging (closing) the grounding wire (grounding knife switch) under power: The function of the grounding switch is to connect the equipment to the ground during equipment maintenance to ensure the safety of maintenance personnel. If the grounding switch is mistakenly closed when powered, it will cause a short circuit fault and may even cause a fire. Therefore, high-voltage switchgear should have the function of preventing such erroneous operation; (3) Prevent closing the circuit breaker (disconnector) with the grounding wire (grounding knife): If other switches are closed when the grounding switch is in the closed position, a short circuit fault may occur, and may even cause an explosion. Therefore, high-voltage switchgear should have the function of preventing such erroneous operation; (4) Prevent mistaken entry into the live compartment: There may be high voltage in the compartments inside the high-voltage switchgear. If maintenance personnel mistakenly enter these areas, it may cause electric shock accidents. Therefore, high-voltage switchgear should have the function of preventing mistaken entry into the live compartment to ensure the safety of maintenance personnel. In addition, the degree of protection of the switchgear casing, partitions and other related parts to prevent people from approaching live parts, touching moving parts, and preventing external objects from invading internal equipment is called the enclosure protection level. GB / T 4208-2017 Enclosure Protection Level (IP Code) Test specifies the protection levels of various types of electrical equipment. The IP code consists of the letters IP, the first characteristic numeral, the second characteristic numeral, additional letters and supplementary letters. Among them: The first characteristic numeral: indicates the protection level against approaching dangerous parts and preventing solid foreign objects from entering, that is, the dustproof level. The numbers range from 0 to 6, and the higher the level, the better the dustproof performance. The second characteristic number: indicates the protection level to prevent harmful effects on the equipment due to water ingress, that is, the waterproof level. The numbers range from 0 to 8, and the higher the level, the better the waterproof performance. When selecting the protection level of the switch cabinet, factors such as the working environment, usage scenarios, and equipment performance requirements need to be considered. For example, a control cabinet working outdoors or in harsh environments needs to choose an electrical control cabinet with a higher dustproof and waterproof level.

[0021] The cabinet cover 2 is set to an inverted V shape to facilitate the retention of snow and water; setting the cabinet cover 2 to an inverted V shape also reduces the residue of snow and water or rain. When encountering severe weather such as freezing rain, the cabinet cover 2 is frozen over a large area, causing the cabinet cover 2 to bear a large load, affecting the normal use of the cabinet body 1 set with the cabinet cover 2. The embodiment of the present application collects snow and water or rain water through a collecting device, and then uses the melting agent in the melting device to generate heat to process the side walls of the cabinet body 1. Therefore, the collecting device and the melting device are both set to two groups, which melt the freezing rain on the two side walls of the cabinet body 1 respectively.

[0022] The collecting device includes a spreading mechanism arranged on the top of the cabinet cover 2, a collecting box 38 arranged on the side wall of the cabinet body 1, a control mechanism and a knocking mechanism for knocking the cabinet cover 2. The spreading mechanism is used to spread salt toward the surface of the cabinet cover 2 to accelerate the melting of snow. The side wall of the collecting box 38 is provided with a water inlet 3. The bottom end of the cabinet cover 2 is located within the range of the water inlet 3. The control mechanism is used to control the opening / closing of the water inlet 3. Other de-icing agents can also be used in the embodiment of the present application. Since table salt is relatively low in cost and easy to transport and store, it is preferred to melt snow or ice. In order to accelerate the melting and obtain water, the embodiment of the present application also uses a knocking mechanism to knock on the agglomerated snow or ice to accelerate the melting speed.

[0023] The control mechanism includes a control panel 4 and a control motor. The control panel 4 rotates to the position of the water inlet 3. The rotation axes of the control panel 4 and the water inlet 3 are located on the symmetric plane of the control panel 4. Therefore, when the control motor drives the control panel 4 to be in a vertical state, the water inlet 3 is closed. If the control panel 4 rotates, the water inlet 3 is opened, and the melted water enters the collection box 38. In this embodiment, the control panel 4 does not need to be rotated to a horizontal state, but only needs to be kept open.

[0024] The spreading mechanism includes a storage cylinder 6, an arc plate 5 and a power motor 7 for controlling the rotation of the arc plate 5. The storage cylinder 6 is fixed at the highest point of the cabinet cover 2. The storage cylinder 6 is provided with two discharge ports relative to the symmetric plane of the cabinet cover 2. The arc plate 5 is rotatably arranged on the cabinet cover 2 and fits the storage cylinder 6. The length directions of the arc plate 5 and the storage cylinder 6 are both square along the width of the cabinet cover 2. Salt is contained in the storage cylinder 6, and the position where the storage cylinder 6 adds salt is located at the end of the storage cylinder 6 away from the power motor 7. The cross-sectional circle of the arc plate 5 and the cross-sectional circle of the storage cylinder 6 are cocentrically arranged. A rotating plate is fixedly connected to one end of the arc plate 5, and the rotating plate is rotatably connected to the cabinet cover 2. Therefore, the power motor 7 controls the rotating plate to rotate to achieve the rotation effect of the arc plate 5. The arc plate 5 adopts a three-quarter arc, and the storage cylinder 6 and the cabinet cover 2 are in line contact, that is, the position where the cabinet cover 2 and the outer wall of the storage cylinder 6 are connected is also greater than three-quarters, which is convenient for the movement of the arc plate 5; the two discharge ports are also close to the position of the cabinet cover 2.

[0025] In the initial position, the arc plate 5 can block the two discharge ports, and the length direction of the discharge ports is also set along the length direction of the storage tube 6. When the power motor 7 drives the arc plate 5 to rotate, the discharge port corresponding to the opposite direction of the rotation of the arc plate 5 is opened. At this time, the salt rolls down from the discharge port and slides down along the inclined side of the cabinet cover 2, thereby achieving the effect of spreading salt to accelerate melting.

[0026] The knocking assembly includes a knocking rod 8 and a reciprocating part. The knocking rod 8 is provided with two and elastically arranged on both sides of the cabinet cover 2. When the arc plate 5 rotates toward the corresponding side of the cabinet cover 2, the knocking rod 8 knocks the corresponding side wall of the cabinet cover 2. The reciprocating part realizes the reciprocating motion of the knocking rod 8. The cabinet cover 2 is fixedly connected with a slide cylinder 10. The knocking rod 8 slides in the slide. A spring 11 is fixedly connected between the inner walls of the end of the slide cylinder 10. The other end of the spring 11 is fixedly connected to the knocking rod 8. The position of the knocking rod 8 is adjustable, which is specifically adjusted according to the size of the cabinet cover 2; the reciprocating part includes an arc The arc gear 9, two racks 12, two reciprocating plates 13 and two electromagnets 14 for adsorbing the knocking rod 8, the arc gear 9 is fixedly connected to the outer wall of the arc plate 5, the rack 12 is meshed with the arc gear 9, the electromagnet 14 adsorbs the reciprocating plate 13, the rack 12 is fixedly connected to the electromagnet 14, the reciprocating plate 13 is fixedly connected to the corresponding knocking rod 8, the arc rack 12 also adopts three-quarters or greater than three-quarters and less than the full arc, because the arc gear 9 will not interfere with the discharge port, the rack 12 slides on the cabinet cover 2 and moves in the vertical direction.

[0027] In the initial state, the arc gear 9 is meshed and connected with the two racks 12. When the arc plate 5 rotates in one direction, the rack 12 in the corresponding opposite direction moves upward. At this time, the electromagnet 14 is adsorbed on the reciprocating plate 13, and the knocking rod 8 also moves upward and squeezes and deforms the spring 11. After the electromagnet 14 is powered off, the knocking rod 8 is driven to move in the direction under the elastic force of the spring 11. The end of the knocking rod 8 is set to be a tip, which is convenient for the knocking rod 8 to break the ice on the corresponding side wall of the cabinet cover 2; and the rack 12 in the same direction moves downward. The knocking rod 8 in this direction contacts the corresponding side wall of the cabinet cover 2 in the initial state. At this time, the electromagnet 14 follows the rack 12 to move downward until it moves to the position adsorbed with the reciprocating plate 13. Then, when the arc plate 5 rotates in the other direction, the knocking rod 8 can be pulled upward, which is convenient for the subsequent knocking of the corresponding side wall of the cabinet cover 2.

[0028] The melting device includes an adjustment mechanism for providing a heating agent, a melting box 15, a bladder 16, and a traction mechanism for traction of the bladder 16. The bladder needs to be made of anti-corrosion and antifreeze materials, and fluororubber or hydrogenated nitrile rubber can be considered. Both materials have good corrosion resistance and low temperature resistance, and can maintain stable performance in harsh environments. At the same time, they also have certain mechanical strength and wear resistance, which can meet the use requirements of the bladder. Among them, the characteristics of fluororubber: fluororubber has excellent corrosion resistance and can resist the erosion of a variety of strong acids, strong alkalis and organic solvents. At the same time, it also has good high temperature resistance and low temperature resistance, and can maintain stable performance in a wide temperature range; and the characteristics of hydrogenated nitrile rubber: hydrogenated nitrile rubber has excellent temperature resistance and can maintain stable performance in a temperature range of -40°C to 150°C. At the same time, it also has good oil resistance and wear resistance.

[0029] The bladder 16 receives water or a heating agent, a temperature sensor 19 is also provided in the bladder 16, and a water outlet valve 20 electrically connected to the temperature sensor 19 is also provided at the bottom of the bladder 16. The melting box 15 is fixed on the cabinet 1 and is located above the collection box 38. The bladder 16 is made of a material with high strength and good heat transfer performance. In the embodiment of the present application, a large amount of heat is generated after the water in the bladder 16 reacts with the heating agent. As the bladder 16 slides on the side wall of the cabinet 1, the ice flakes on the side wall of the cabinet 1 can be melted; adjusting The mechanism includes a bracket slidably arranged in the melting box 15, a traction rope 18, a traction roller 17 rotatably arranged in the melting box 15, and a traction click for controlling the rotation of the traction roller 17. One end of the traction rope 18 is fixedly connected to the peripheral wall of the traction roller 17, and the other end of the traction rope 18 is set to four thread ends, and the four thread ends are respectively fixedly connected to the four corners of the leather bag 16; the length direction of the melting box 15 is set along the width direction of the cabinet cover 2, and the movement direction of the bracket moves along the length direction of the melting box 15, and is realized by an electric push rod. In the embodiment of the present application, the heat-generating agent is not only quicklime, but also metallic sodium, potassium or borane, etc., as long as it can react with water to release heat. According to the actual application scenario, corrosive and low-cost quicklime is preferably used.

[0030] In the embodiment of the present application, quicklime is selected as the exothermic agent, because quicklime generates a large amount of heat when it reacts with water, and the cost of quicklime is low. The adjustment mechanism includes a plurality of non-woven bags 21, an adjustment rope 22, a winding roller 23, a winding motor, and a cutting assembly for cutting the adjustment rope 22. The plurality of non-woven bags 21 are arranged on the adjustment rope 22, and the melting box 15 is provided with an outlet for the leather bag 16 to pass through. One end of the adjustment rope 22 is fixedly connected to the outer peripheral wall of the winding roller 23, and the winding motor controls the winding roller 23 to rotate. The melting box 15 is provided with a feeding port 24, and the leather bag 16 The initial position is directly below the discharge port 24, the non-woven bag 21 is filled with a heating agent, the cutting assembly is arranged at the discharge port 24 close to the end of the melting box 15, the non-woven bag 21 is filled with quicklime, the discharge port 24 is inclined, and the size of the discharge port 24 is smaller than the opening size of the leather bag 16, and the size of the non-woven bag 21 is smaller than the volume of the leather bag 16, so a plurality of non-woven bags 21 can be installed in the leather bag 16, until the side wall of the cabinet 1 is completely melted, the staff needs to take out the non-woven bag 21 and the product of the quicklime reaction from the leather bag 16.

[0031] The cutting assembly includes a plurality of cloth strips 25, a squeezing plate 26 and a squeezing electric push rod 27. The cloth strips 25 are provided with a plurality of tear holes. The cloth strips 25 are used to connect the adjustment rope 22 and the non-woven bag 21. The squeezing electric push rod 27 is arranged in the melting box 15. The tail end of the adjustment rope 22 moves into the feeding port 24. At this time, the non-woven bag 21 is also guided to the position of the feeding port 24. The squeezing electric push rod 27 starts to work and squeezes the non-woven cloth strips. In the embodiment of the present application, the length of the cloth strips 25 is set to be larger, thereby ensuring the squeezing. The plate 26 can stably squeeze the cloth strip 25, and as long as the squeezing plate 26 does not squeeze at the position of the tear hole, at this time, one non-woven bag 21 is located in the discharge port 24, and the other non-woven bags 21 are located in the melting box 15 and above the squeezing plate 26. The winding roller 23 is controlled to start reversing and wind the adjustment rope 22. Under the squeezing of the squeezing plate 26 and the pulling action of the winding roller 23, the cloth strip 25 is broken, and the non-woven bag 21 falls from the discharge port 24 into the leather bag 16.

[0032] The collecting box 38 is provided with a water outlet 28, and the tail end of the water outlet 28 is vertically connected with a vertical port 29. The water outlet 28 is slidably adapted in the collecting box 38. The vertical port 29 is also provided with a solenoid valve. The vertical port 29 is provided with two relatively movable expansion plates 30. Since the opening of the leather bag 16 is elastic, the vertical port 29 is provided with a transmission component for realizing the relative movement of the two expansion plates 30. The collecting box 38 is located below the melting box 15, which is convenient for the subsequent leather bag 16 to take water. One end of the water outlet 28 is located in the collecting box 38, and the other end is located outside the collecting box 38. The movement of the water outlet 28 is also realized by an electric push rod, and the electric push rod is located on the outer wall of the collecting box 38. The bottom end of the expansion plate 30 is located lower than the vertical port 29, which is convenient for the expansion plate 30 to expand the opening of the leather bag 16 to prevent water from splashing to the outside of the leather bag 16.

[0033] The transmission assembly includes a double-headed threaded rod 31, a transmission motor 32, a sliding rod 33 and two sliding blocks 34. The double-headed threaded rod 31 is rotatably arranged on the outer wall of the vertical opening 29, and the sliding rod 33 is fixedly connected to the outer wall of the vertical opening 29. The transmission motor 32 controls the rotation of the double-headed threaded rod 31. The two sliding blocks 34 are slidingly sleeved outside the sliding rod 33, and the two sliding blocks 34 are respectively spirally matched at the two ends of the double-headed threaded rod 31. The two sliding blocks 34 are respectively fixedly connected to the two support plates 30. A protective box needs to be set on the outer wall of the transmission click to protect it. Of course, the electrical energy required by the components in this embodiment can be provided by a photovoltaic mechanism; when the non-woven bag 21 falls to the leather bag 16, the traction roller 17 starts to release the traction rope 18. When the leather bag 16 falls below the vertical opening 29, the water outlet 2 8 is extended, and after the vertical opening 29 is located below the bladder 16, the bladder 16 is controlled to move upward, and the traction rope 18 is wound by the traction roller 17 until the lower end of the vertical opening 29 is close to the opening of the bladder 16, the transmission motor 32 starts to work, and the two sliders 34 on the double-headed threaded rod 31 move along the slide rod 33 in the direction away from each other, and the opening plate 30 opens the bladder 16 so that the vertical opening 29 can completely enter the bladder 16, and the solenoid valve on the vertical opening 29 is started, and water begins to enter the solenoid valve. After the water in the bladder 16 contacts with quicklime, it begins to release a large amount of heat, and the bladder 16 and the hot water in the bladder 16 are continuously controlled to move downward and contact with the side wall of the cabinet 1. After the hot water in the bladder 16 contacts with the cabinet 1, the freezing rain on the side wall of the cabinet 1 is quickly melted.

[0034] The cabinet 1 is also provided with a guide roller 35 for sliding movement. The guide roller 35 is filled with antifreeze liquid. The peripheral wall of the guide roller 35 is provided with a plurality of fine holes 36. The guide roller 35 is provided with an adsorption member 37 outside the fine holes 36. The traction rope 18 rubs against the adsorption member 37. The guide roller 35 moves in the horizontal direction. The movement is also achieved by the electric push rod. The guide roller 35 pulls the traction rope 18 toward the cabinet 1. At this time, the leather bag 16 can always keep in contact with the side wall of the cabinet 1 under the action of its gravity to accelerate the melting speed of the freezing rain. In addition, the antifreeze liquid in the guide roller 35 is The adsorbent 37 absorbs, and under the action of the gravity of the bladder 16, after the traction rope 18 contacts the adsorbent 37, the antifreeze can be coated on its surface to prevent the traction rope 18 from being frozen and affecting the normal movement of the bladder 16; after multiple contacts with the cabinet 1, the position of the bracket can also be adjusted to melt the freezing rain at other positions of the cabinet 1 until the temperature sensor 19 detects that the water temperature in the bladder 16 is lower than the temperature that can melt the ice. At this time, it is necessary to control the water outlet valve 20 to open, and reheat the non-woven bag 21 and the water.

[0035] The implementation principle of a flame-retardant low-voltage withdrawable switch cabinet in the embodiment of the present application is as follows: in the initial state, the arc gear 9 is meshed and connected with the two racks 12. When the arc plate 5 rotates in one direction, the rack 12 in the corresponding opposite direction moves upward. At this time, the electromagnet 14 is adsorbed on the reciprocating plate 13, and the knocking rod 8 also moves upward and squeezes and deforms the spring 11. After the electromagnet 14 is powered off, the knocking rod 8 is driven to move in the direction under the elastic force of the spring 11. The end of the knocking rod 8 is set to a tip, which is convenient for the knocking rod 8 to move the cabinet cover 2 to the opposite direction. The ice on the side wall should be broken; and the corresponding rack 12 in the same direction moves downward, and the knocking rod 8 in this direction contacts the corresponding side wall of the cabinet cover 2 in the initial state. At this time, the electromagnet 14 follows the rack 12 to move downward until it moves to the position adsorbed with the reciprocating plate 13, and then when the arc plate 5 rotates in the other direction, the knocking rod 8 can be pulled upward, which is convenient for the subsequent knocking of the corresponding side wall of the cabinet cover 2; at the same time, the salt rolls down from this discharge port and slides down along the inclined side of the cabinet cover 2, thereby achieving the effect of spreading salt to accelerate melting.

[0036] When the non-woven bag 21 falls to the leather bag 16, the traction roller 17 starts to release the traction rope 18. When the leather bag 16 falls below the vertical opening 29, the water outlet 28 extends out. After the vertical opening 29 is located below the leather bag 16, the leather bag 16 is controlled to move upward, and the traction rope 18 is wound by the traction roller 17 until the lower end of the vertical opening 29 is close to the opening of the leather bag 16. The transmission motor 32 starts to work, and the two sliders 34 on the double-headed threaded rod 31 move along the slide rod 33 toward The two sides move away from each other, and the opening plate 30 opens the bladder 16 so that the vertical opening 29 can completely enter the bladder 16. The solenoid valve on the vertical opening 29 is started, and water begins to enter the solenoid valve. After the water in the bladder 16 contacts with quicklime, it begins to release a large amount of heat. The bladder 16 and the hot water in the bladder 16 are continuously controlled to move downward and contact with the side wall of the cabinet 1. After the hot water in the bladder 16 contacts with the cabinet 1, the freezing rain on the side wall of the cabinet 1 is quickly melted.

[0037] After multiple contacts with the cabinet 1, the position of the bracket can also be adjusted to melt the freezing rain at other positions of the cabinet 1 until the temperature sensor 19 detects that the water temperature in the leather bag 16 is lower than the temperature that can melt the ice. At this time, it is necessary to control the water outlet valve 20 to open and reheat the non-woven bag 21 and the water.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flame retardant low voltage withdrawable switch cabinet, characterized in that: It comprises a cabinet body (1), a cabinet cover (2) arranged on the top of the cabinet body (1), a collection device for collecting water, and a melting device for melting freezing rain; the cabinet cover (2) is arranged in an inverted V shape to facilitate the retention of snow and water; The collecting device comprises a spreading mechanism arranged on the top of the cabinet cover (2), a collecting box (38) arranged on the side wall of the cabinet body (1), a control mechanism, and a knocking mechanism for knocking the cabinet cover (2); The spreading mechanism is used to spread salt toward the surface of the cabinet cover (2) to accelerate snow melting. The side wall of the collection box (38) is provided with a water inlet (3), and the control mechanism is used to control the opening / closing of the water inlet (3).

2. The flame-retardant low-voltage withdrawable switch cabinet according to claim 1, characterized in that: The spreading mechanism comprises a storage cylinder (6), an arc-shaped plate (5) and a power motor (7) for controlling the rotation of the arc-shaped plate (5); the storage cylinder (6) is fixed at the highest point of the cabinet cover (2); the storage cylinder (6) is provided with two discharge ports relative to the symmetric surface of the cabinet cover (2); the arc-shaped plate (5) is rotatably arranged on the cabinet cover (2) and is in contact with the storage cylinder (6).

3. A flame-retardant low-voltage withdrawable switch cabinet according to claim 2, characterized in that: The knocking assembly comprises a knocking rod (8) and a reciprocating portion. Two knocking rods (8) are provided and are elastically arranged on both sides of the cabinet cover (2). When the arc-shaped plate (5) rotates toward the corresponding side of the cabinet cover (2), the knocking rod (8) knocks the corresponding side wall of the cabinet cover (2), and the reciprocating portion realizes the reciprocating motion of the knocking rod (8).

4. The flame-retardant low-voltage withdrawable switch cabinet according to claim 3 is characterized in that: The reciprocating part comprises an arc gear (9), two racks (12), two reciprocating plates (13) and two electromagnets (14) for adsorbing the knocking rod (8); the arc gear (9) is fixedly connected to the outer wall of the arc plate (5); the rack (12) is meshedly connected to the arc gear (9); the electromagnet (14) adsorbs the reciprocating plate (13); the rack (12) is fixedly connected to the electromagnet (14); and the reciprocating plate (13) is fixedly connected to the corresponding knocking rod (8).

5. The flame-retardant low-voltage withdrawable switch cabinet according to claim 3 is characterized in that: The melting device comprises an adjusting mechanism for providing a heating agent, a melting box (15), a bladder (16), and a traction mechanism for traction of the bladder (16); the bladder (16) receives water or a heating agent; a temperature sensor (19) is also arranged in the bladder (16); a water outlet valve (20) electrically connected to the temperature sensor (19) is also arranged at the bottom of the bladder (16); the melting box (15) is fixed on the cabinet (1) and is located above the collection box (38).

6. The flame-retardant low-voltage withdrawable switch cabinet according to claim 5, characterized in that: The adjustment mechanism comprises a plurality of non-woven bags (21), an adjustment rope (22), a winding roller (23), a winding motor, and a cutting assembly for cutting the adjustment rope (22); the plurality of non-woven bags (21) are arranged on the adjustment rope (22); one end of the adjustment rope (22) is fixedly connected to the outer peripheral wall of the winding roller (23); the winding motor controls the rotation of the winding roller (23); the melting box (15) is provided with a discharge port (24); the leather bag (16) is located directly below the discharge port (24) in an initial position; the non-woven bag (21) is filled with a heating agent; and the cutting assembly is arranged at the discharge port (24) close to the end of the melting box (15).

7. The flame-retardant low-voltage withdrawable switch cabinet according to claim 6, characterized in that: The cutting assembly comprises a plurality of cloth strips (25), an extrusion plate (26) and an extrusion electric push rod (27), wherein the cloth strips (25) are provided with a plurality of tear holes, the cloth strips (25) are used to connect the adjustment rope (22) and the non-woven bag (21), and the extrusion electric push rod (27) is arranged in the melting box (15).

8. The flame-retardant low-voltage withdrawable switch cabinet according to claim 7, characterized in that: The collection box (38) is provided with a water outlet (28), the tail end of the water outlet (28) is vertically connected to a vertical port (29), the water outlet (28) is slidably adapted in the collection box (38), the vertical port (29) is provided with two relatively movable support plates (30), the vertical port (29) is provided with a transmission component for realizing the relative movement of the two support plates (30), and the vertical port (29) is provided with a solenoid valve.

9. The flame-retardant low-voltage withdrawable switch cabinet according to claim 8, characterized in that: The transmission assembly comprises a double-headed threaded rod (31), a transmission motor (32), a sliding rod (33) and two sliding blocks (34); the double-headed threaded rod (31) is rotatably arranged on the outer wall of the vertical opening (29); the sliding rod (33) is fixedly connected to the outer wall of the vertical opening (29); the transmission motor (32) controls the rotation of the double-headed threaded rod (31); the two sliding blocks (34) are slidably sleeved outside the sliding rod (33); the two sliding blocks (34) are respectively screw-fitted to the two ends of the double-headed threaded rod (31); and the two sliding blocks (34) are respectively fixedly connected to the two support plates (30).

10. The flame-retardant low-voltage withdrawable switch cabinet according to claim 5, characterized in that: The cabinet (1) is also provided with a guide roller (35) for sliding movement. The guide roller (35) is filled with antifreeze liquid. The peripheral wall of the guide roller (35) is provided with a plurality of fine holes (36). The guide roller (35) is provided with an adsorption member (37) outside the fine holes (36). The traction rope (18) rubs against the adsorption member (37).

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