Sound insulation and noise reduction mechanism for power distribution cabinet

Abstract

A sound insulation and noise reduction mechanism for an electric power distribution cabinet belongs to the technical field of power distribution cabinets, and aims to solve the problem that a sound insulation and noise reduction mechanism of an existing power distribution cabinet is inconvenient to raise the height of the power distribution cabinet when rainfall is large, so that rain prevention of the bottom of the power distribution cabinet is inconvenient. When the rain vigor is too large, under the influence of buoyancy of water, multiple sets of floating balls rise along the lifting rod along with the water level, when the floating balls in the middle rise, a light sliding block is driven to rise through a connecting line, and when the light sliding block rises, a second spring is pushed and extruded in a sliding mode and makes contact with an L-shaped check block; under the combined action of a rotating disc and two sets of push-pull rods, the telescopic air cylinder drives two sets of push plates to guide rotating blocks, so that two sets of wedge-shaped clamping blocks push supporting plates to ascend at the same time, and under the combined action of the four sets of supporting plates, the whole sound insulation shell ascends; therefore, the power distribution cabinet can be lifted when the rainfall is large, and the bottom of the power distribution cabinet is prevented from being submerged by rainwater.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and specifically to a sound insulation and noise reduction mechanism for power distribution cabinets. Background Art

[0002] Power distribution cabinets are divided into power distribution cabinets, lighting distribution cabinets, and metering cabinets, and are the end - level equipment of the power distribution system. Power distribution cabinets are the general term for motor control centers. Power distribution cabinets are used in occasions where the load is relatively dispersed and the number of circuits is small; motor control centers are used in occasions where the load is concentrated and the number of circuits is large. They distribute the electric energy of a certain circuit of the upper - level power distribution equipment to the nearby load. This level of equipment should provide protection, monitoring, and control for the load.

[0003] Currently, there are problems. During the operation of power distribution cabinets, noise is generated due to the vibration of internal motors, which causes trouble to the life and work of people in the surrounding environment. The sound insulation and noise reduction mechanism is not convenient for collecting rainwater for the heat dissipation of the power distribution cabinet itself, and the water inside is not easy to replace by itself. After the water quality deteriorates over a long time, the heat dissipation effect will be reduced. The existing sound insulation and noise reduction mechanism of power distribution cabinets is not convenient for raising the height of the power distribution cabinet during heavy rainfall, thus making it inconvenient to prevent rain at the bottom of the power distribution cabinet. The existing power distribution cabinets are not convenient for lowering the height of the power distribution cabinet after rain, thus making it inconvenient to maintain the overall stability of the power distribution cabinet, and making the power distribution cabinet vulnerable to wind and prone to toppling.

[0004] In view of the above problems, a sound insulation and noise reduction mechanism for power distribution cabinets is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a sound insulation and noise reduction mechanism for power distribution cabinets, which solves the problems in the background art that during the operation of power distribution cabinets, noise is generated due to the vibration of internal motors, causing trouble to the life and work of people in the surrounding environment; the sound insulation and noise reduction mechanism is not convenient for collecting rainwater for the heat dissipation of the power distribution cabinet itself, and the water inside is not easy to replace by itself. After the water quality deteriorates over a long time, the heat dissipation effect will be reduced; the existing sound insulation and noise reduction mechanism of power distribution cabinets is not convenient for raising the height of the power distribution cabinet during heavy rainfall, thus making it inconvenient to prevent rain at the bottom of the power distribution cabinet; the existing sound insulation and noise reduction mechanism is not convenient for lowering the height of the power distribution cabinet after rain, thus making it inconvenient to maintain the overall stability of the power distribution cabinet, and making the power distribution cabinet vulnerable to wind and prone to toppling.

[0006] To achieve the above object, the present invention provides the following technical solution: A sound insulation and noise reduction mechanism for a power distribution cabinet, including a base, a cabinet body is arranged at the upper end of the base, a sound insulation door is hinged to the outside of the cabinet body, a drainer is arranged on the outside of the lower part of the cabinet body, the drainer includes a drain box fixedly connected to the cabinet body, a dust-proof filter cartridge is arranged on the outside of the drain box, a transmission box is arranged on the top of the cabinet body, an accumulator is arranged at the upper end of the transmission box, a sound insulation filter cover is arranged on the top of the accumulator, the cabinet body includes a sound insulation outer shell arranged at the upper end of the base, a power distribution room is opened on one side of the sound insulation outer shell close to the sound insulation door, various electrical components related to the power distribution cabinet are arranged inside the power distribution room, sound insulation inner cavities are opened inside the four walls of the power distribution room, and water is arranged inside the sound insulation inner cavities;

[0007] The transmission box includes a sound insulation outer frame fixedly connected to the top of the sound insulation outer shell, and the sound insulation inner cavity is communicated with the inside of the transmission box. A conversion component is arranged on the inner wall of the sound insulation outer frame of the transmission box. The accumulator includes a water storage tank arranged on the upper end of the conversion component. A siphon is arranged inside the water storage tank, and there are multiple groups of water storage tanks. The water storage tank includes a water tank shell fixedly connected to the sound insulation outer frame of the transmission box. A water storage groove is opened on the upper surface of the water tank shell. Fixed blocks are arranged inside the water storage groove, and there are seven groups of fixed blocks. Each of the seven groups of fixed blocks is provided with a water delivery groove, and there are multiple groups of water delivery grooves. Water storage grooves are arranged inside each of the multiple groups of water delivery grooves. The other end of the water storage groove is located between two adjacent groups of fixed blocks.

[0008] Further, a water collecting cylinder fixedly connected to the inner wall of the fixed block is arranged at the lower end of the siphon pipe. A downcomer is fixedly connected to the center of the bottom of the water collecting cylinder. The siphon includes a siphon cylinder arranged inside the water collecting cylinder. A threaded ring is arranged around the outside of the siphon cylinder, and the threaded ring is fixedly connected to the inner wall of the water collecting cylinder. The siphon pipe penetrates through the upper walls of the water collecting cylinder and the siphon cylinder and extends into the inside of the siphon cylinder, and there is a certain distance between the lower end of the siphon pipe and the bottom wall of the siphon cylinder. Water inlet holes are opened on the upper surfaces of the water collecting cylinder and the siphon cylinder.

[0009] Further, the conversion component includes a deflection shaft fixedly connected to the inner wall of the sound insulation outer frame of the transmission box, and there are seven groups of deflection shafts. Transmission blocks are arranged in the middle of each of the seven groups of deflection shafts. The conversion component includes transmission arms rotatably connected to the lower ends of the transmission blocks through shafts, and there are six groups of transmission arms. Each of the adjacent two groups of transmission blocks is rotatably connected through one group of the transmission arms. A transmission component is arranged at one end of the middle group of deflection shafts. Flip plates are arranged at the other ends of the seven groups of deflection shafts, and the seven groups of flip plates are all located at a position to the right of the lower end of the downcomer. A lifting component is arranged in the middle section of one of the flip plates, and the lifting component is fixedly connected to the left inner wall of the sound insulation outer frame of the transmission box.

[0010] Further, the transmission assembly includes a first bevel gear provided at one end of a set of the offset shafts. A first face gear is meshed and connected to the outside of the first bevel gear. A connecting shaft is provided at one end of the first face gear. A second bevel gear is provided at the other end of the connecting shaft. A second face gear is meshed and connected to the lower end of the second bevel gear. A transmission shaft is provided at the bottom of the second face gear. A spur gear is provided at the lower end of the transmission shaft. A rack is meshed and connected to the outside of the spur gear. The transmission shaft, the spur gear, and the rack are all located inside the sound insulation housing. The drainage tank includes a sound insulation shell fixedly connected to the sound insulation housing. A water delivery pipe is provided inside the sound insulation shell. One end of the water delivery pipe is communicated with the sound insulation cavity. The other end of the water delivery pipe is fixedly connected to the dust-proof filter cartridge.

[0011] Further, the drainage tank further includes a sliding plate slidably connected to the inner wall of the sound insulation shell, and the sliding plate is located above the water delivery pipe. One end of the rack is fixedly connected to the outside of the sliding plate. A clamping plate is provided inside the sliding plate, and there are two sets of clamping plates. Push-pull grooves are provided inside both sets of the clamping plates. An opening and closing device is provided between the two sets of the clamping plates, and the opening and closing device is located inside the water delivery pipe. A waterproof rubber pad is provided on the outside of the opening and closing device, and the waterproof rubber pad is located inside the opening and closing device and is movably connected to the inner wall of the opening and closing device.

[0012] Further, the opening and closing device includes a fixed shaft provided between the two sets of the clamping plates. A first pin shaft is provided on the outside of the top end of the fixed shaft. A first arc-shaped plate fixedly connected to the side surface of the waterproof rubber pad is provided on the outside of the lower end of the first pin shaft. A connecting sleeve is rotatably connected to the outside of the fixed shaft. A second pin shaft is provided on the outside of the top end of the connecting sleeve. A second arc-shaped plate fixedly connected to the side surface of the waterproof rubber pad is provided on the outside of the lower end of the connecting sleeve. The first pin shaft and the second pin shaft are respectively located inside the push-pull grooves of the two sets of the clamping plates.

[0013] Further, the floating and lifting assembly includes a fixing plate provided on the left inner wall of the sound insulation outer frame of the transmission box. A lifting rod is provided at the upper end of the fixing plate, and there are multiple groups of the lifting rods. Floating balls are slidably connected to the outside of all the multiple groups of the lifting rods. The floating and lifting assembly further includes connecting plastic rods fixedly connected to the floating balls, and there are multiple groups of the connecting plastic rods. Adjacent two groups of the floating balls are fixedly connected by one group of the connecting plastic rods. A control assembly is provided at the lower end of the middle group of the floating balls. The control assembly includes a lightweight sliding block slidably provided on the outside of the fixing plate, and the lightweight sliding block is located below the floating ball. Four connecting lines are provided on the outside of the fixing plate. The lightweight sliding block and the floating ball are fixedly connected by the four connecting lines.

[0014] Further, the control assembly further includes an L-shaped stopper provided on the left inner wall of the sound insulation outer frame of the transmission box. A second spring is provided on one side of the L-shaped stopper. A push block is slidably connected to the upper surface of the second spring, and the push block is fixedly connected to the L-shaped stopper by the second spring. The push block is located at the middle position in the vertical direction between the lightweight sliding block and the floating ball. A connecting belt is provided on the outside of the lightweight sliding block, and the other end of the connecting belt is fixedly connected to the upper surface of one group of the flipping plates.

[0015] Furthermore, the base includes a support box slidably connected to the outer wall of the sound insulation housing. Drainage holes are provided in the bottom wall of the support box, and multiple groups of drainage holes are provided. A first spring is provided on the bottom wall of the support box, and multiple groups of first springs are provided. The other ends of the multiple groups of first springs are fixedly connected to the bottom of the sound insulation housing. A lifting seat is further provided on the bottom wall of the support box, and there are four groups of lifting seats. The four groups of lifting seats are all located between the multiple groups of first springs. The lifting seat includes two support columns fixedly connected to the bottom of the sound insulation housing. A support plate is fixedly connected to the bottoms of the two support columns. Wedge-shaped clamping blocks are slidably connected to both ends of the support plate. A clamping assembly is provided at the bottom of the two wedge-shaped clamping blocks, and a fixing assembly is provided at the bottom of the clamping assembly.

[0016] Furthermore, the fixing assembly includes a guide block and a positioning block fixedly connected to the bottom wall of the support box. There are two groups of positioning blocks. The guide block is located at the middle position between the two groups of positioning blocks. The fixing assembly further includes two sliding rods passing through and fixedly connected to the guide block. The two groups of positioning blocks are fixedly connected by the two sliding rods. A telescopic cylinder is provided between the two sliding rods, and the output end of the telescopic cylinder is fixedly connected to the middle of the side surface of the guide block. A fixing column is provided at the center of the top of the guide block. The clamping assembly includes a turntable rotatably connected to the top of the fixing column, and the fixing column is located at the center of the turntable. Push-pull rods are rotatably connected to the edge of the upper surface of the turntable through shafts, and there are two groups of push-pull rods. The other ends of the two groups of push-pull rods are rotatably connected to push plates through shafts. The clamping assembly further includes eight sliding seats fixedly connected to the bottom of the push plates. The eight sliding seats are slidably connected to the two sliding rods. The bottom of the push plate is fixedly connected to the other end of the telescopic cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. A sound insulation and noise reduction mechanism for a power distribution cabinet provided by the present invention uses a sound insulation outer shell, a sound insulation inner cavity, and water inside the sound insulation inner cavity to perform multi-layer sound insulation on the noise generated by vibrations inside the power distribution room. Rainwater enters the water storage tank through the sound insulation filter cover. There is a gap between the water delivery groove of the fixed block and the siphon tube. Part of the rainwater will enter the fixed block through the gap along the outer wall of the siphon tube and finally enter the siphon tube through the water inlet holes on the upper surfaces of the water collection cylinder and the siphon cylinder. Since the other end of the siphon tube is located inside the water storage tank, when both ends of the siphon tube are submerged by rainwater, due to the liquid level difference between the rainwater in the water storage tank and the siphon cylinder, according to the siphon principle, the water in the water storage tank will enter the siphon cylinder through the siphon tube under the action of atmospheric pressure first, then overflow from the upper end of the siphon cylinder and enter the water collection cylinder along with the threaded ring, and form a vortex at the bottom of the water collection cylinder, so as to quickly flow out through the downcomer and fall onto the left half of the flip plate. Under the impact of the rainwater flowing out of multiple groups of downcomers, the left sides of the seven groups of flip plates deflect downward, thereby driving the seven groups of deflection shafts at the same time to make the seven groups of transmission blocks rotate along with the deflection shafts. Thus, the six groups of transmission arms push to make the seven groups of deflection shafts deflect in unison. The deflection of the middle group of deflection shafts makes the first bevel gear rotate. Subsequently, under the linkage of the first end face gear, the connecting shaft, the second bevel gear, the second end face gear, the transmission shaft, and the spur gear, the rack moves, thereby pulling the slide plate. Under the combined action of two groups of clamping plates, the first pin shaft, and the second pin shaft, the fixed shaft and the connecting sleeve deflect, causing the first arc plate and the second arc plate to deflect and drive the waterproof rubber pad to bend. The water inside the sound insulation inner cavity passes through the gap between the waterproof rubber pad and the inner wall of the water delivery pipe and flows out through the dust-proof filter cylinder, thereby reducing the impact on the sound insulation effect when the first arc plate and the second arc plate deflect. At the same time, the water falling onto the flip plate at the lower end of the downcomer will pass through the transmission box and finally enter the sound insulation inner cavity. And the water inflow into the sound insulation inner cavity is greater than the drainage volume, making the sound insulation inner cavity accumulate rainwater to facilitate heat dissipation of the inner wall of the power distribution room, so as to facilitate self-replacement of the water inside the sound insulation inner cavity and avoid reducing the heat dissipation effect after the water quality deteriorates for a long time.

[0019] 2. A sound insulation and noise reduction mechanism for a power distribution cabinet provided by the present invention. After the sound insulation inner cavity is filled with rainwater, the rainwater enters the transmission box. When the rain is heavy, affected by the buoyancy of water, multiple groups of floating balls rise along the lifting rod following the water level. When the middle group of floating balls rises, the light slider is driven to rise through the connecting line. When the light slider rises, it will push the push block to slide along the upper surface of the L-shaped block, causing the push block to squeeze the second spring and contact the L-shaped block. When the push block contacts the L-shaped block, an electrical connection is generated to energize the telescopic cylinder to work. Under the combined action of the turntable and two push rods, the telescopic cylinder drives two push plates to move towards the guide block, causing two wedge-shaped clamping blocks to simultaneously push the support plate to rise. The role of the first spring is to maintain the balance of the sound insulation housing. Under the combined action of four support plates, the entire sound insulation housing rises. At the same time, the other end of the light slider is fixedly connected to the upper surface of the left side of the flip plate through a connecting belt. When the floating ball drives the light slider to rise to a certain height, the connecting belt will cause the flip plate to deflect upward, thereby counteracting the impact of the water flow and keeping the flip plate balanced. Thus, the first arc plate and the second arc plate reset and close, closing the gap between the waterproof rubber pad and the deflection shaft, so that the water in the sound insulation inner cavity cannot be discharged through the dust-proof filter cartridge. The device completes the water replacement process and starts to collect water, and the flip plate is in a horizontal state, so that the floating ball no longer rises with the water level, thus reaching a balanced state, which is convenient for raising the height of the power distribution cabinet when the rainfall is large, and avoiding the bottom of the power distribution cabinet being flooded by rainwater.

[0020] 3. A sound insulation and noise reduction mechanism for a power distribution cabinet provided by the present invention. When the rainfall stops and the downspout no longer has water flowing out to impact the flip plate, since the floating ball is in the water and the buoyancy still exists, that is, the pulling force of the connecting belt on the flip plate still exists, the flip plate no longer maintains balance and begins to deflect upward, causing the first arc plate and the second arc plate to deflect in the reverse direction from the closed position, pushing the waterproof rubber pad to bend in the reverse direction. Thus, the water inside the sound insulation inner cavity can flow out through the dust-proof filter cartridge through the water delivery pipe, causing the water level inside the transmission box to continuously decrease. Thus, the floating ball follows the water level and drops, and thus the light slider drops under its own gravity. Thus, the light slider pushes the push block downward to contact the L-shaped block again, completing the electrical connection to cut off the power supply of the telescopic cylinder. That is, the telescopic cylinder causes two push plates to drive two wedge-shaped clamping blocks to separate, causing four support plates to slide downward under the gravity of the sound insulation housing, thereby reducing the height of the sound insulation housing. When the water level inside the transmission box drops to be flush with the flip plate, the flip plate returns to horizontal, causing the first arc plate and the second arc plate to pull the waterproof rubber pad to return to flat again. Thus, the gap between the waterproof rubber pad and the water delivery pipe is closed, and the water in the sound insulation inner cavity no longer flows out through the dust-proof filter cartridge, which is convenient for lowering the height of the power distribution cabinet after the rain, and is beneficial to maintaining the overall stability of the power distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the sound insulation inner cavity of the present invention;

[0023] Figure 3 It is a schematic cross-sectional plane structural diagram of the cabinet body of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the accumulator of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the water storage tank of the present invention;

[0026] Figure 6 It is a schematic structural diagram of the siphon of the present invention;

[0027] Figure 7 It is a schematic structural diagram of the conversion component of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the transmission component of the present invention;

[0029] Figure 9 It is a schematic structural diagram of the drainage tank of the present invention;

[0030] Figure 10 It is a schematic structural diagram of the waterproof gasket of the present invention;

[0031] Figure 11 It is a schematic structural diagram of the opener of the present invention;

[0032] Figure 12 It is a schematic structural diagram of the lifting component of the present invention;

[0033] Figure 13 It is a schematic structural diagram of the control component of the present invention;

[0034] Figure 14 It is a schematic structural diagram of the base of the present invention;

[0035] Figure 15 It is a schematic structural diagram of the lifting seat of the present invention;

[0036] Figure 16 It is a schematic structural diagram of the fixing component of the present invention;

[0037] Figure 17 It is a schematic structural diagram of the clamping component of the present invention.

[0038] In the figure: 1. Base; 11. Support box; 12. First spring; 13. Drain hole; 2. Cabinet body; 21. Sound insulation housing; 22. Power distribution room; 23. Sound insulation inner cavity; 3. Sound insulation door; 4. Drainage device; 41. Drainage box; 411. Sound insulation shell; 412. Water delivery pipe; 413. Opening and closing device; 4131. First arc plate; 4132. Fixed shaft; 4133. First pin shaft; 4134. Second pin shaft; 4135. Second arc plate; 4136. Connecting sleeve; 414. Slide plate; 415. Clamping plate; 416. Waterproof rubber pad; 42. Dust-proof filter cartridge; 5. Transmission box; 51. Conversion component; 511. Flipping plate; 512. Deflection shaft; 513. Transmission block; 514. Transmission arm; 52. Lifting component; 521. Fixed plate; 522. Lifting rod; 523. Floating ball; 524. Connecting plastic rod; 53. Transmission component; 531. First bevel gear; 532. First face gear; 533. Connecting shaft; 534. Second bevel gear; 535. Second face gear; 536. Transmission shaft; 537. Straight gear; 538. Rack; 54. Control component; 541. Lightweight slider; 542. Connecting wire; 543. Connecting belt; 544. L-shaped stop block; 545. Second spring; 546. Pushing block; 6. Accumulator; 61. Water storage tank; 611. Water tank shell; 612. Water storage groove; 613. Fixed block; 62. Siphon; 621. Siphon tube; 622. Water collecting cylinder; 623. Downcomer; 624. Siphon cylinder; 625. Threaded ring; 7. Sound insulation filter cover; 8. Lifting seat; 81. Support column; 82. Support plate; 83. Wedge-shaped clamping block; 84. Clamping component; 841. Turntable; 842. Push-pull rod; 843. Push plate; 844. Sliding seat; 85. Fixed component; 851. Guide rotating block; 852. Telescopic cylinder; 853. Fixed column; 854. Slide bar; 855. Positioning block. Specific embodiments

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] In order to solve the technical problem that the sound insulation and noise reduction mechanism is not convenient for collecting rainwater and replacing the internal water by itself, which affects the heat dissipation of the power distribution cabinet, as Figures 1 - 11 shown, the following preferred technical solutions are provided:

[0041] A sound insulation and noise reduction mechanism for a power distribution cabinet, including a base 1. At the upper end of the base 1, there is a cabinet body 2. A sound insulation door 3 is hinged to the outside of the cabinet body 2. A drainer 4 is arranged on the outer side of the lower part of the cabinet body 2. The drainer 4 includes a drain box 41 fixedly connected to the cabinet body 2. A dust-proof filter cartridge 42 is arranged on the outside of the drain box 41. A transmission box 5 is arranged on the top of the cabinet body 2. An accumulator 6 is arranged at the upper end of the transmission box 5. A sound insulation filter cover 7 is arranged on the top of the accumulator 6. The cabinet body 2 includes a sound insulation outer shell 21 arranged at the upper end of the base 1. A power distribution room 22 is opened on one side of the sound insulation outer shell 21 close to the sound insulation door 3. Various electrical components related to the power distribution cabinet are arranged inside the power distribution room 22. Sound insulation inner cavities 23 are opened inside the four walls of the power distribution room 22. Water is arranged inside the sound insulation inner cavities 23. The transmission box 5 includes a sound insulation outer frame fixedly connected to the top of the sound insulation outer shell 21. And the sound insulation inner cavity 23 is communicated with the inside of the transmission box 5. A conversion component 51 is arranged on the inner wall of the sound insulation outer frame of the transmission box 5. The accumulator 6 includes a water storage tank 61 arranged on the upper end of the conversion component 51. A siphon 62 is arranged inside the water storage tank 61. And there are multiple groups of the water storage tanks 61. The water storage tank 61 includes a tank shell 611 fixedly connected to the sound insulation outer frame of the transmission box 5. A water storage groove 612 is opened on the upper surface of the tank shell 611. Fixing blocks 613 are arranged inside the water storage groove 612. And there are seven groups of the fixing blocks 613. Multiple groups of water delivery grooves are opened in the seven groups of fixing blocks 613. And multiple groups of water storage grooves 612 are arranged inside the multiple groups of water delivery grooves. The other end of the water storage groove 612 is located between two adjacent groups of fixing blocks 613. The lower end of the siphon tube 621 is fixedly connected to a water collecting cylinder 622 fixedly connected to the inner wall of the fixing block 613. A downcomer 623 is fixedly connected to the center of the bottom of the water collecting cylinder 622. The siphon 62 includes a siphon cylinder 624 arranged inside the water collecting cylinder 622. A threaded ring 625 is arranged around the outside of the siphon cylinder 624. And the threaded ring 625 is fixedly connected to the inner wall of the water collecting cylinder 622. The siphon tube 621 penetrates through the upper walls of the water collecting cylinder 622 and the siphon cylinder 624 and extends into the inside of the siphon cylinder 624. And there is a certain distance between the lower end of the siphon tube 621 and the bottom wall of the siphon cylinder 624. Water inlet holes are opened on the upper surfaces of both the water collecting cylinder 622 and the siphon cylinder 624. The conversion component 51 includes a deflection shaft 512 fixedly connected to the inner wall of the sound insulation outer frame of the transmission box 5. And there are seven groups of the deflection shafts 512. Transmission blocks 513 are arranged in the middle of the seven groups of deflection shafts 512. The conversion component 51 includes a transmission arm 514 rotatably connected to the lower end of the transmission block 513 through a shaft. And there are six groups of the transmission arms 514. Two adjacent groups of transmission blocks 513 are rotatably connected through a group of transmission arms 514. A transmission component 53 is arranged at one end of the middle group of deflection shafts 512. The other ends of the seven groups of deflection shafts 512 are all provided with turning plates 511. And the seven groups of turning plates 511 are all located at the lower right position of the lower end of the downcomer 623. A floating component 52 is arranged in the middle section of a group of turning plates 511. The floating component 52 is fixedly connected to the left inner wall of the sound insulation outer frame of the transmission box 5. The transmission component 53 includes a first bevel gear 531 arranged at one end of a group of deflection shafts 512A first bevel gear 531 is meshed and connected to the outside of a first face gear 532. One end of the first face gear 532 is provided with a connecting shaft 533. The other end of the connecting shaft 533 is provided with a second bevel gear 534. The lower end of the second bevel gear 534 is meshed and connected to a second face gear 535. The bottom of the second face gear 535 is provided with a transmission shaft 536. The lower end of the transmission shaft 536 is provided with a spur gear 537. The outside of the spur gear 537 is meshed and connected to a rack 538. The transmission shaft 536, the spur gear 537 and the rack 538 are all located inside the sound insulation housing 21. The drainage tank 41 includes a sound insulation shell 411 fixedly connected to the sound insulation housing 21. Inside the sound insulation shell 411 is provided a water delivery pipe 412. One end of the water delivery pipe 412 communicates with the sound insulation cavity 23. The other end of the water delivery pipe 412 is fixedly connected to a dust-proof filter cartridge 42. The drainage tank 41 further includes a slide plate 414 slidably connected to the inner wall of the sound insulation shell 411, and the slide plate 414 is located above the water delivery pipe 412. The outside of the slide plate 414 is fixedly connected to one end of the rack 538. Inside the slide plate 414 is provided a clamping plate 415, and there are two groups of clamping plates 415. Push-pull grooves are formed inside both groups of clamping plates 415. An opening and closing device 413 is arranged between the two groups of clamping plates 415, and the opening and closing device 413 is located inside the water delivery pipe 412. A waterproof rubber pad 416 is arranged on the outside of the opening and closing device 413. The waterproof rubber pad 416 is located inside the opening and closing device 413 and is movably connected to the inner wall of the opening and closing device 413. The opening and closing device 413 includes a fixed shaft 4132 arranged between the two groups of clamping plates 415. On the outside of the top end of the fixed shaft 4132 is provided a first pin shaft 4133. On the outside of the lower end of the first pin shaft 4133 is provided a first arc-shaped plate 4131 fixedly connected to the side surface of the waterproof rubber pad 416. The outside of the fixed shaft 4132 is rotatably connected to a connecting sleeve 4136. On the outside of the top end of the connecting sleeve 4136 is provided a second pin shaft 4134. On the outside of the lower end of the connecting sleeve 4136 is provided a second arc-shaped plate 4135 fixedly connected to the side surface of the waterproof rubber pad 416. The first pin shaft 4133 and the second pin shaft 4134 are respectively located inside the push-pull grooves of the two groups of clamping plates 415.,

[0042] Specifically, the sound insulation housing 21, the sound insulation inner cavity 23 and the water inside the sound insulation inner cavity 23 are used to perform multi-layer sound insulation on the noise generated by the vibration inside the power distribution room 22. Rainwater enters the water storage tank 612 through the sound insulation filter cover 7. There is a gap between the water delivery groove of the fixed block 613 and the siphon tube 621. A part of the rainwater will enter the inside of the fixed block 613 along the outer wall of the siphon tube 621 through the gap, and finally enter the inside of the siphon tube 624 through the water inlet holes on the upper surfaces of the water collection cylinder 622 and the siphon cylinder 624. Since the other end of the siphon tube 621 is located inside the water storage tank 612, when both ends of the siphon tube 621 are submerged by rainwater, due to the liquid level difference between the rainwater inside the water storage tank 612 and the siphon cylinder 624, according to the siphon principle, the water inside the water storage tank 612 will enter the inside of the siphon cylinder 624 through the siphon tube 621 under the action of the atmospheric pressure first, and then overflow from the upper end of the siphon cylinder 624 and follow the threaded ring 625 into the inside of the water collection cylinder 622, and form a vortex at the bottom of the water collection cylinder 622, so as to quickly flow out through the downcomer 623 and fall onto the left half of the flip plate 511. Under the impact of the rainwater flowing out of multiple groups of downcomers 623, the left sides of the seven groups of flip plates 511 deflect downward, so as to drive the seven groups of deflection shafts 512 at the same time and make the seven groups of transmission blocks 513 rotate following the deflection shafts 512. Thus, the six groups of transmission arms 514 push to make the seven groups of deflection shafts 512 deflect in unison. The deflection of the middle group of deflection shafts 512 makes the first bevel gear 531 rotate. Subsequently, under the linkage of the first face gear 532, the connecting shaft 533, the second bevel gear 534, the second face gear 535, the transmission shaft 536 and the spur gear 537, the rack 538 moves, so as to pull the sliding plate 414. Under the combined action of the two groups of clamping plates 415, the first pin shaft 4133 and the second pin shaft 4134, the fixed shaft 4132 and the connecting sleeve 4136 deflect, so that the first arc plate 4131 and the second arc plate 4135 deflect and drive the waterproof rubber pad 416 to bend. The water inside the sound insulation inner cavity 23 passes through the gap between the waterproof rubber pad 416 and the inner wall of the water delivery pipe 412 and flows out from the dust-proof filter cylinder 42, so as to reduce the influence on the sound insulation effect when the first arc plate 4131 and the second arc plate 4135 deflect. At the same time, the water falling on the flip plate 511 at the lower end of the downcomer 623 will pass through the transmission box 5 and finally enter the inside of the sound insulation inner cavity 23. And the water inflow of the sound insulation inner cavity 23 is greater than the water drainage, so that the sound insulation inner cavity 23 accumulates rainwater to facilitate the heat dissipation of the inner wall of the power distribution room 22, thus facilitating the self-replacement of the water inside the sound insulation inner cavity 23 and avoiding the reduction of the heat dissipation effect due to the long-term decline of the water quality.

[0043] To solve the technical problem that the sound insulation and noise reduction mechanism is not convenient to raise the height of the power distribution cabinet when the rainfall is large, as Figures 12 - 15 shown, the following preferred technical solutions are provided:

[0044] The lifting assembly 52 includes a fixing plate 521 provided on the left inner wall of the sound insulation outer frame of the transmission box 5. At the upper end of the fixing plate 521, there is a lifting rod 522, and there are multiple groups of the lifting rods 522. A floating ball 523 is slidably connected to the outside of each group of the lifting rods 522. The lifting assembly 52 further includes a connecting plastic rod 524 fixedly connected to the floating ball 523, and there are multiple groups of the connecting plastic rods 524. Adjacent two groups of the floating balls 523 are fixedly connected by a group of the connecting plastic rods 524. At the lower end of the middle group of the floating balls 523, there is a control assembly 54. The control assembly 54 includes a light slider 541 slidably provided on the outside of the fixing plate 521, and the light slider 541 is located at the lower end of the floating ball 523. A connecting line 542 is provided on the outside of the fixing plate 521, and there are four groups of the connecting lines 542. The light slider 541 and the floating ball 523 are fixedly connected by the four groups of the connecting lines 542. The control assembly 54 further includes an L-shaped stopper 544 provided on the left inner wall of the sound insulation outer frame of the transmission box 5. A second spring 545 is provided on one side of the L-shaped stopper 544. A push block 546 is slidably connected to the upper surface of the second spring 545, and the push block 546 and the L-shaped stopper 544 are fixedly connected by the second spring 545. And the push block 546 is located at the middle position in the vertical direction between the light slider 541 and the floating ball 523. A connecting belt 543 is provided on the outside of the light slider 541, and the other end of the connecting belt 543 is fixedly connected to the upper surface of a group of the turning plates 511. The base 1 includes a support box 11 slidably connected to the outer wall of the sound insulation housing 21. Drainage holes 13 are provided in the bottom wall of the support box 11, and there are multiple groups of the drainage holes 13. A first spring 12 is provided on the bottom wall of the support box 11, and there are multiple groups of the first springs 12. The other ends of the multiple groups of the first springs 12 are all fixedly connected to the bottom of the sound insulation housing 21. An elevating seat 8 is further provided on the bottom wall of the support box 11, and there are four groups of the elevating seats 8. The four groups of the elevating seats 8 are all located between the multiple groups of the first springs 12. The elevating seat 8 includes a support column 81 fixedly connected to the bottom of the sound insulation housing 21, and there are two groups of the support columns 81. The bottoms of the two groups of the support columns 81 are fixedly connected with a support plate 82. Wedge-shaped clamping blocks 83 are slidably connected to both ends of the support plate 82. A clamping assembly 84 is provided at the bottom of the two groups of the wedge-shaped clamping blocks 83. A fixing assembly 85 is provided at the bottom of the clamping assembly 84.

[0045] Specifically, after the sound insulation cavity 23 is filled with rainwater, the rainwater enters the transmission box 5. When the rain is too heavy, affected by the buoyancy of the water, multiple groups of floating balls 523 rise along the lifting rod 522 following the water level. When the middle group of floating balls 523 rises, it drives the light slider 541 to rise through the connecting line 542. When the light slider 541 rises, it will push the push block 546 to slide along the upper surface of the L-shaped block 544, so that the push block 546 squeezes the second spring 545 and contacts the L-shaped block 544. When the push block 546 and the L-shaped block 544 are in contact, an electrical connection is generated to make the telescopic cylinder 852 energized and work. Under the combined action of the turntable 841 and the two push-pull rods 842, the telescopic cylinder 852 drives the two push plates 843 to move towards the deflector block 851, so that the two wedge-shaped clamping blocks 83 simultaneously push the support plate 82 to rise. The function of the first spring 12 is to keep the sound insulation housing 21 balanced. Under the combined action of the four support plates 82, the whole sound insulation housing 21 rises. At the same time, the other end of the light slider 541 is fixedly connected to the upper surface of the left side of the flip plate 511 through the connecting belt 543. When the floating ball 523 drives the light slider 541 to rise to a certain height, the connecting belt 543 will cause the flip plate 511 to deflect upward, thereby resisting the impact of the water flow and keeping the flip plate 511 balanced. Thus, the first arc plate 4131 and the second arc plate 4135 are reset and closed, so that the gap between the waterproof rubber pad 416 and the deflection shaft 512 is closed, so that the water in the sound insulation cavity 23 cannot be discharged through the dust-proof filter cartridge 42. The device completes the water replacement process and starts to collect water, and the flip plate 511 is in a horizontal state, so that the floating ball 523 no longer rises with the water level, thus reaching a balanced state, so as to facilitate raising the height of the power distribution cabinet when the rainfall is large and avoid the bottom of the power distribution cabinet being flooded by rainwater.

[0046] To solve the technical problem that the sound insulation and noise reduction mechanism is not convenient to lower the height of the power distribution cabinet after rain, as Figure 16 and Figure 17 shown, the following preferred technical solutions are provided:

[0047] The fixing component 85 includes a guide turning block 851 and a positioning block 855 fixedly connected to the bottom wall of the support box 11. There are two groups of positioning blocks 855, and the guide turning block 851 is located in the middle position between the two groups of positioning blocks 855. The fixing component 85 further includes a sliding rod 854 passing through and fixedly connected to the guide turning block 851. There are two groups of sliding rods 854, and the two groups of positioning blocks 855 are fixedly connected by the two groups of sliding rods 854. An expansion cylinder 852 is arranged between the two groups of sliding rods 854, and the output end of the expansion cylinder 852 is fixedly connected to the middle part of the side surface of the guide turning block 851. A fixing column 853 is arranged at the center of the top of the guide turning block 851. The clamping component 84 includes a turntable 841 rotatably connected to the top of the fixing column 853, and the fixing column 853 is located at the center of the turntable 841. Push-pull rods 842 are rotatably connected to the edge of the upper surface of the turntable 841 through shafts. There are two groups of push-pull rods 842, and the other ends of the two groups of push-pull rods 842 are rotatably connected to push plates 843 through shafts. The clamping component 84 further includes sliding seats 844 fixedly connected to the bottoms of the push plates 843. There are eight groups of sliding seats 844, and the eight groups of sliding seats 844 are slidably connected to the two groups of sliding rods 854. The bottom of the push plate 843 is fixedly connected to the other end of the expansion cylinder 852.

[0048] Specifically, when the rainfall stops and there is no longer water flowing out of the rainwater pipe 623 to impact the turning plate 511, since the floating ball 523 is in the water and the buoyancy still exists, that is, the pulling force of the connecting belt 543 on the turning plate 511 still exists, causing the turning plate 511 to no longer maintain balance and start to deflect upward. As a result, the first arc-shaped plate 4131 and the second arc-shaped plate 4135 deflect in the reverse direction from the closed position, pushing the waterproof rubber pad 416 to bend reversely. Thus, the water inside the sound insulation cavity 23 can flow out from the dust-proof filter cartridge 42 through the water delivery pipe 412, causing the water level inside the transmission box 5 to continuously decrease. Consequently, the floating ball 523 follows the water level and drops, and then the light-weight slider 541 drops under its own gravity. Therefore, the light-weight slider 541 pushes the push block 546 downward to contact the L-shaped stop block 544 again, completing the electrical connection and powering off the expansion cylinder 852. That is, the expansion cylinder 852 causes the two groups of push plates 843 to drive the two groups of wedge-shaped clamping blocks 83 to separate, and the four groups of support plates 82 slide downward under the gravity of the sound insulation housing 21, thereby reducing the height of the sound insulation housing 21. When the water level inside the transmission box 5 drops to be flush with the turning plate 511, the turning plate 511 returns to horizontal, causing the first arc-shaped plate 4131 and the second arc-shaped plate 4135 to pull the waterproof rubber pad 416 to return to flat again. Thus, the gap between the waterproof rubber pad 416 and the water delivery pipe 412 closes, and the water inside the sound insulation cavity 23 no longer flows out through the dust-proof filter cartridge 42. This facilitates lowering the height of the power distribution cabinet after rain, which is beneficial to maintaining the overall stability of the power distribution cabinet.

[0049] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sound insulation and noise reduction mechanism for a power distribution cabinet, comprising a base (1), characterized in that: At the upper end of the base (1), there is a cabinet body (2). A soundproof door (3) is hinged to the outside of the cabinet body (2). A drainer (4) is arranged on the outside of the lower part of the cabinet body (2). The drainer (4) includes a drain box (41) fixedly connected to the cabinet body (2). A dust-proof filter cartridge (42) is arranged on the outside of the drain box (41). A transmission box (5) is arranged on the top of the cabinet body (2). An accumulator (6) is arranged at the upper end of the transmission box (5). A soundproof filter cover (7) is arranged on the top of the accumulator (6). The cabinet body (2) includes a soundproof outer shell (21) arranged at the upper end of the base (1). A power distribution room (22) is opened on one side of the soundproof outer shell (21) close to the soundproof door (3). Various electrical components related to the power distribution cabinet are arranged inside the power distribution room (22). Soundproof inner cavities (23) are opened inside the four walls of the power distribution room (22). Water is arranged inside the soundproof inner cavities (23). The transmission box (5) includes a soundproof outer frame fixedly connected to the top of the soundproof outer shell (21). And the soundproof inner cavity (23) is communicated with the inside of the transmission box (5). A conversion component (51) is arranged on the inner wall of the soundproof outer frame of the transmission box (5). The accumulator (6) includes a water storage tank (61) arranged at the upper end of the conversion component (51). A siphon (62) is arranged inside the water storage tank (61). And there are multiple groups of the water storage tanks (61). The water storage tank (61) includes a tank shell (611) fixedly connected to the soundproof outer frame of the transmission box (5). A water storage groove (612) is opened on the upper surface of the tank shell (611). A fixing block (613) is arranged inside the water storage groove (612). And there are seven groups of the fixing blocks (613). Each of the seven groups of the fixing blocks (613) is provided with a water delivery groove. And there are multiple groups of the water delivery grooves. Water storage grooves (612) are arranged inside each of the multiple groups of the water delivery grooves. The other end of the water storage groove (612) is located between two adjacent groups of the fixing blocks (613).

2. The sound insulation and noise reduction mechanism for a power distribution cabinet according to claim 1, wherein: The lower end of the siphon tube (621) is provided with a water collecting cylinder (622) fixedly connected to the inner wall of the fixing block (613). A downcomer (623) is fixedly connected to the center of the bottom of the water collecting cylinder (622). The siphon (62) includes a siphon cylinder (624) arranged inside the water collecting cylinder (622). A threaded ring (625) is arranged around the outside of the siphon cylinder (624). And the threaded ring (625) is fixedly connected to the inner wall of the water collecting cylinder (622). The siphon tube (621) penetrates through the upper walls of the water collecting cylinder (622) and the siphon cylinder (624) and extends into the inside of the siphon cylinder (624). And there is a certain distance between the lower end of the siphon tube (621) and the bottom wall of the siphon cylinder (624). Water inlet holes are opened on the upper surfaces of both the water collecting cylinder (622) and the siphon cylinder (624).

3. The sound insulation and noise reduction mechanism for a power distribution cabinet according to claim 2, characterized in that: The conversion component (51) includes a deflection shaft (512) fixedly connected to the inner wall of the sound-insulating outer frame of the transmission case (5). There are seven groups of the deflection shafts (512). Transmission blocks (513) are arranged in the middle of the seven groups of the deflection shafts (512). The conversion component (51) includes a transmission arm (514) rotatably connected to the lower end of the transmission block (513) by a shaft. There are six groups of the transmission arms (514). Adjacent two groups of the transmission blocks (513) are rotatably connected by one group of the transmission arms (514). A transmission component (53) is arranged at one end of the middle group of the deflection shafts (512). Flip plates (511) are arranged at the other ends of the seven groups of the deflection shafts (512). And the seven groups of the flip plates (511) are all located at the position slightly to the right of the lower end of the downcomer (623). A lifting component (52) is arranged in the middle section of one group of the flip plates (511). The lifting component (52) is fixedly connected to the left inner wall of the sound-insulating outer frame of the transmission case (5).

4. A sound insulation and noise reduction mechanism for a power distribution cabinet according to claim 3, characterized in that: The transmission component (53) includes a first bevel gear (531) arranged at one end of one group of the deflection shafts (512). A first face gear (532) is meshed and connected to the outside of the first bevel gear (531). A connecting shaft (533) is arranged at one end of the first face gear (532). A second bevel gear (534) is arranged at the other end of the connecting shaft (533). A second face gear (535) is meshed and connected to the lower end of the second bevel gear (534). A transmission shaft (536) is arranged at the bottom of the second face gear (535). A spur gear (537) is arranged at the lower end of the transmission shaft (536). A rack (538) is meshed and connected to the outside of the spur gear (537). The transmission shaft (536), the spur gear (537) and the rack (538) are all located inside the sound-insulating housing (21). The drainage tank (41) includes a sound-insulating shell (411) fixedly connected to the sound-insulating housing (21). A water delivery pipe (412) is arranged inside the sound-insulating shell (411). One end of the water delivery pipe (412) is communicated with the sound-insulating cavity (23). The other end of the water delivery pipe (412) is fixedly connected to the dust-proof filter cartridge (42).

5. The sound insulation and noise reduction mechanism for a power distribution cabinet according to claim 4, characterized in that: The drainage tank (41) further includes a sliding plate (414) slidably connected to the inner wall of the sound-insulating shell (411). And the sliding plate (414) is located above the water delivery pipe (412). One end of the sliding plate (414) is fixedly connected to the rack (538). Clamping plates (415) are arranged inside the sliding plate (414). There are two groups of the clamping plates (415). And push-pull grooves are formed inside the two groups of the clamping plates (415). An opening and closing device (413) is arranged between the two groups of the clamping plates (415). And the opening and closing device (413) is located inside the water delivery pipe (412). A waterproof rubber pad (416) is arranged on the outside of the opening and closing device (413). The waterproof rubber pad (416) is located inside the opening and closing device (413) and is movably connected to the inner wall of the opening and closing device (413).

6. The sound insulation and noise reduction mechanism for a power distribution cabinet according to claim 5, characterized in that: The opener (413) includes a fixed shaft (4132) disposed between two sets of the clamping plates (415). On the outer side of the top end of the fixed shaft (4132), a first pin shaft (4133) is provided. On the outer side of the lower end of the first pin shaft (4133), a first arc-shaped plate (4131) fixedly connected to the side surface of the waterproof rubber pad (416) is provided. The outer part of the fixed shaft (4132) is rotationally connected with a connecting sleeve (4136). On the outer side of the top end of the connecting sleeve (4136), a second pin shaft (4134) is provided. On the outer side of the lower end of the connecting sleeve (4136), a second arc-shaped plate (4135) fixedly connected to the side surface of the waterproof rubber pad (416) is provided. The first pin shaft (4133) and the second pin shaft (4134) are respectively located inside the push-pull grooves of the two sets of the clamping plates (415).

7. A sound insulation and noise reduction mechanism for a power distribution cabinet according to claim 2, characterized in that: The lifting assembly (52) includes a fixing plate (521) disposed on the left inner wall of the sound insulation outer frame of the transmission box (5). At the upper end of the fixing plate (521), a lifting rod (522) is provided, and there are multiple groups of the lifting rods (522). Multiple groups of floating balls (523) are slidably connected to the outer sides of the multiple groups of the lifting rods (522). The lifting assembly (52) further includes a connecting plastic rod (524) fixedly connected to the floating ball (523), and there are multiple groups of the connecting plastic rods (524). Adjacent two groups of the floating balls (523) are fixedly connected through one group of the connecting plastic rods (524). At the lower end of the middle group of the floating balls (523), a control assembly (54) is provided. The control assembly (54) includes a light slider (541) slidably disposed on the outer side of the fixing plate (521), and the light slider (541) is located at the lower end of the floating ball (523). On the outer side of the fixing plate (521), a connecting line (542) is provided, and there are four groups of the connecting lines (542). The light slider (541) and the floating ball (523) are fixedly connected through the four groups of the connecting lines (542).

8. The sound insulation and noise reduction mechanism for a power distribution cabinet according to claim 7, characterized in that: The control assembly (54) further includes an L-shaped stop block (544) disposed on the left inner wall of the sound insulation outer frame of the transmission box (5). On one side of the L-shaped stop block (544), a second spring (545) is provided. On the upper surface of the second spring (545), a push block (546) is slidably connected, and the push block (546) and the L-shaped stop block (544) are fixedly connected through the second spring (545). The push block (546) is located at the middle position in the vertical direction between the light slider (541) and the floating ball (523). On the outer side of the light slider (541), a connecting belt (543) is provided, and the other end of the connecting belt (543) is fixedly connected to the upper surface of one group of the turning plates (511).

9. The sound insulation and noise reduction mechanism for a power distribution cabinet according to claim 1, wherein: The base (1) includes a support box (11) slidably connected to the outer wall of the sound insulation housing (21). The bottom wall of the support box (11) is provided with drain holes (13), and multiple groups of drain holes (13) are provided. The bottom wall of the support box (11) is provided with first springs (12), and multiple groups of first springs (12) are provided. The other ends of the multiple groups of the first springs (12) are fixedly connected to the bottom of the sound insulation housing (21). The bottom wall of the support box (11) is further provided with lifting seats (8), and there are four groups of lifting seats (8). The four groups of the lifting seats (8) are all located between the multiple groups of the first springs (12). The lifting seat (8) includes support columns (81) fixedly connected to the bottom of the sound insulation housing (21), and there are two groups of support columns (81). The bottoms of the two groups of the support columns (81) are fixedly connected with a support plate (82). Wedge-shaped clamping blocks (83) are slidably connected to both ends of the support plate (82). A clamping assembly (84) is provided at the bottom of the two groups of the wedge-shaped clamping blocks (83), and a fixing assembly (85) is provided at the bottom of the clamping assembly (84).

10. A sound insulation and noise reduction mechanism for a power distribution cabinet according to claim 8, characterized in that: The fixing assembly (85) includes a guide rotation block (851) and positioning blocks (855) fixedly connected to the bottom wall of the support box (11), and there are two groups of positioning blocks (855). The guide rotation block (851) is located at the middle position between the two groups of the positioning blocks (855). The fixing assembly (85) further includes sliding rods (854) passing through and fixedly connected to the guide rotation block (851), and there are two groups of sliding rods (854). The two groups of the positioning blocks (855) are fixedly connected by the two groups of the sliding rods (854). A telescopic cylinder (852) is provided between the two groups of the sliding rods (854), and the output end of the telescopic cylinder (852) is fixedly connected to the middle part of the side surface of the guide rotation block (851). A fixing column (853) is provided at the center of the top of the guide rotation block (851). The clamping assembly (84) includes a turntable (841) rotatably connected to the top of the fixing column (853), and the fixing column (853) is located at the center of the turntable (841). Push-pull rods (842) are rotatably connected to the edge of the upper surface of the turntable (841) through shafts, and there are two groups of push-pull rods (842). The other ends of the two groups of the push-pull rods (842) are rotatably connected to push plates (843) through shafts. The clamping assembly (84) further includes sliding seats (844) fixedly connected to the bottom of the push plates (843), and there are eight groups of sliding seats (844). The eight groups of the sliding seats (844) are slidably connected to the two groups of the sliding rods (854). The bottom of the push plate (843) is fixedly connected to the other end of the telescopic cylinder (852).

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