Power supply square cabin with noise reduction and ventilation structure

Abstract

The invention discloses a power supply shelter with a noise reduction and ventilation structure, a plurality of noise reduction plates are arranged in a mounting cavity at equal intervals, a gap is formed between every two adjacent noise reduction plates to form a ventilation opening, a blockage clearing mechanism for clearing blockage of the noise reduction plates is mounted among the noise reduction plates, a ventilation fan is mounted at the innermost end of the mounting cavity, and the ventilation opening is communicated with the noise reduction plates. A plurality of noise reduction plates are arranged in the fixing frame, a shutter mechanism is arranged on the outermost side of the mounting cavity, a dust isolation net is arranged between the shutter mechanism and the noise reduction plates, the dust isolation net is connected with the inner wall of the fixing frame through screws, a blockage clearing mechanism is arranged in the fixing frame, and a plurality of blockage clearing pieces on the blockage clearing mechanism are located between every two adjacent noise reduction plates correspondingly; the matched expansion piece, the lifting lead screw, the rotating rod and the unblocking piece can move up and down, the sound absorption holes of the noise reduction plate are cleaned in the moving process, the noise reduction plate is prevented from being blocked by dust, and the noise reduction effect cannot be reduced when the noise reduction plate is used outdoors.

Description

Technical Field

[0001] The invention relates to the technical field of power supply cabins, and in particular to a power supply cabin with a noise reduction and ventilation structure. Background Art

[0002] The power supply shelter is a specially designed mobile power supply device that mainly carries a generator set and provides stable power output. It can operate independently without an external power supply, or it can be connected and used when an external power supply is available. In order to avoid damage to the motor due to excessive temperature, the power supply shelter usually needs to be equipped with vents to discharge the heat generated by the motor when it is working. When the motor is working, it will generate loud working noise, intake noise and exhaust noise, causing noise pollution. In order to reduce noise pollution, the existing vents are usually equipped with noise reduction plates parallel to the vents.

[0003] Since power supply shelters are usually used outdoors, some outdoor environments are relatively harsh, especially in dusty areas. The dust will enter the ventilation duct through the air vents, thereby blocking the sound-absorbing holes on the noise reduction board, resulting in a reduction in the overall noise reduction effect. For this reason, we designed a power supply shelter with a noise reduction ventilation structure. Summary of the invention

[0004] The present invention provides a power supply cabin with a noise reduction and ventilation structure, which solves the above-mentioned problem.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A power supply cabin with a noise reduction and ventilation structure comprises a cabin body, wherein a fixing frame is installed on the left and right sides of the cabin body by means of mounting flanges and screws, a support plate is suspended at the lower part of the fixing frame, an installation cavity is formed between the support plate and the upper part of the fixing frame, a plurality of noise reduction plates are arranged at equal intervals in the installation cavity, a vent is formed by a spacing between two adjacent noise reduction plates, a clearing mechanism for clearing blockage of the noise reduction plates is installed between the plurality of noise reduction plates, a ventilation fan is installed at the innermost end of the installation cavity, a shutter mechanism is installed at the outermost end of the installation cavity, a dust screen is arranged between the shutter mechanism and the plurality of noise reduction plates, and the dust screen is connected to the inner wall of the fixing frame by screws.

[0006] Preferably, the noise reduction plate is symmetrically and bent in the middle, and a connecting cavity is formed in the hollow interior of the noise reduction plate, and sound absorbing holes are formed through the surfaces of both sides of the noise reduction plate, and the sound absorbing holes are connected to the inside of the connecting cavity; The noise reduction board is composed of two metal plates spliced ​​together, and the angle between the two metal plates is between 100 and 150 degrees. This allows the noise reduction board to reflect the sound when the airflow passes through the vents, and the sound waves generate more interference between the noise reduction boards, further reducing the propagation intensity of the sound waves; The sound-absorbing holes adopt a resonant sound-absorbing structure. The air in the sound-absorbing holes is similar to a piston and has a certain sound quality. The closed connecting cavity is similar to an air spring and has a certain elasticity. When the sound wave reaches the cavity mouth, the air column vibrates under the action of the sound wave. The friction with the cavity mouth wall during vibration causes part of the sound energy to be converted into heat energy and dissipated. At the same time, due to the sudden change of acoustic impedance, the sound wave is reflected and interfered, resulting in sound energy attenuation. When the natural frequency of the system resonates with the sound wave frequency, the sound energy consumed is the largest and the sound attenuation is the largest.

[0007] Preferably, the blockage clearing mechanism comprises four groups of lifting screws distributed in a rectangular shape, the four groups of lifting screws are rotatably mounted on the top of the fixed frame and the support plate through bearings, a lifting screw seat is arranged on the lifting screw, a mounting guide rod is fixed between the two lifting screw seats on the left and right sides, a plurality of groups of blockage clearing members are slidably arranged between the two mounting guide rods, a group of blockage clearing members is arranged between every two adjacent noise reduction plates, the blockage clearing members comprise two blockage clearing plates, and a plurality of blockage clearing heads are arranged on the side of the two blockage clearing plates close to the corresponding noise reduction plates respectively; An extension guide rod is arranged between the two clearing plates of the same group of clearing blockage members, and the two ends of the extension guide rod are respectively fixed to the two mounting guide rods, and the front and rear ends of the extension guide rod are symmetrically slidably sleeved with two extension guide rings, and two groups of offset plates are rotatably installed on both sides of the extension guide ring through axle pins, and the two groups of offset plates are rotatably connected to the adjacent clearing blocks through axle pins, and an extension piece is slidably arranged on the mounting guide rod, and the extension piece is movably connected to the extension guide ring; The extension piece can make the extension guide ring away from the installation guide rod or close to the installation guide rod. When the extension guide ring slides along the extension guide rod and away from the installation guide rod, the offset plate will pull the two clearing plates closer to each other, so that the clearing plates are away from the corresponding noise reduction plates, and the clearing heads on the clearing plates are away from the sound absorption holes. When the extension guide ring slides along the extension guide rod and approaches the installation guide rod, the offset plate will push the two clearing plates away from each other, so that the clearing plates are close to the corresponding noise reduction plates, and the clearing heads on the clearing plates are inserted into the sound absorption holes to clean the impurities on the inner wall to prevent blockage.

[0008] Preferably, the installation guide rod is hollow inside to form a moving cavity, a plurality of notches 1 distributed at equal intervals are provided above the outer ring surface of the installation guide rod, the plurality of notches 1 are respectively located between two clearing plates of the same group, and a notch 2 is provided on one side of the outer ring surface of the installation guide rod; The extension member includes a moving rod slidably placed in the moving cavity, a plurality of shaft rods distributed at equal intervals are fixed to the outer ring of the moving rod, the shaft rod passes through a notch 1 and is placed outside the moving cavity, and an extension support plate is rotatably installed on the shaft rod, the other end of the extension support plate is rotatably connected to the top of the extension guide ring through an axle pin, a linkage frame is fixed on the moving rod, the other end of the linkage frame passes through a notch 2 and is placed outside the moving cavity, and an abutment wheel is rotatably installed on the linkage frame through an axle pin, when the moving rod moves in a direction away from the notch 2, the extension support plate will make the extension guide ring move away from the installation guide rod, and the two clearing plates will move away from the corresponding noise reduction plates, and vice versa. The clearing plates are close to the corresponding noise reduction plates; A clearing spring is provided at one end of the installation guide rod away from the second gap, and the other end of the clearing spring is in contact with the moving rod. The clearing spring makes the moving rod tend to move toward the second gap, so that the clearing head on the clearing plate can extend into the sound absorption hole, thereby cleaning the sound absorption hole.

[0009] Preferably, two groups of rotating rods are rotatably installed between the top of the fixed frame and the upper end of the support plate through bearings, and the two rotating rods are respectively arranged on the outward side of the two groups of lifting screws close to the second notch, and the rotating rods are slidably sleeved with a driving ring up and down, and the protruding part of the outer ring of the driving ring forms a driving part with an arc structure, and the abutting wheel is in rolling contact with the driving ring and the surface of the driving part; When the driving part contacts with the abutting wheel and rotates, the driving part pushes the abutting wheel to move toward the end away from the rotating rod, thereby making the entire moving rod away from the rotating rod. At this time, the extended guide ring is away from the installation guide rod, and the two clearing plates are away from the corresponding noise reduction plates. When the abutting wheel contacts with the surface of the driving ring, the moving rod is moved toward one side of the rotating rod under the action of the clearing spring, and the two clearing plates are close to the corresponding noise reduction plates. A fixing frame is fixed above the lifting screw seat, a bearing is arranged on the fixing frame, a mounting ring is integrally arranged on the upper end of the driving ring, and the mounting ring is rotatably connected to the fixing frame through the bearing. The lifting screw seat can move up and down under the action of the lifting screw, and then the driving ring can move up and down together, so that the extension piece can swing, so that the clearing piece can clean the corresponding noise reduction plate; The outer ring surface of the rotating rod is provided with three groups of linkage grooves in a circular array, and the inner ring of the mounting ring is provided with three linkage sliders in a ring shape. The linkage sliders are slidably placed in the linkage grooves. When the rotating rod rotates, the driving ring can rotate along with it, and the driving ring can also slide up and down on the rotating rod.

[0010] Preferably, a transmission gear is provided at the lower end of the lifting screw, a driving wheel is provided at the lower end of the rotating rod, a driving tooth portion meshing with the transmission gear is provided on the outer ring surface of the driving wheel, the number of meshing teeth of the driving tooth portion is half of the total number of meshing teeth of the transmission gear, the transmission gear and the driving wheel are of the same size, and the transmission gear rotates half a circle for each rotation of the driving wheel, at which time the entire lifting screw seat descends by a unit distance, which is an integer multiple of the distance between two upper and lower adjacent sound absorbing holes; The arc length of the driving part is greater than half of the circumference of the driving ring, and the driving part is located directly above the driving tooth part. When the driving tooth part is meshed with the transmission gear for transmission, the driving part will first contact the abutment wheel and move it away from one end of the rotating rod. At this time, the clearing head will be outside the sound absorbing hole, and then the lifting screw will rotate, and the entire clearing part will move up and down, thereby not interfering with the normal lifting and lowering of the clearing part.

[0011] Preferably, the lifting screw and the rotating rod all pass through the support plate and are located below it, and the driving ring and the transmission gear are all located in the space below the support plate, and the lower ends of the four lifting screws are installed with toothed pulleys, and the four lifting screws rotate synchronously through the toothed pulleys and the toothed belt, and the two rotating rods are connected through the toothed belt and the toothed pulley, and the bottom end of one of the rotating rods is connected to an external forward and reverse driving motor, and the rotating rod can rotate continuously under the action of the driving motor, and it can make the four lifting screws rotate synchronously intermittently; The direction of the sound absorption hole on the noise reduction plate is designed to be parallel to the installation guide rod, and the direction of the clearing head on the clearing plate is designed to be parallel to the installation guide rod. The clearing plate slides along the installation guide rod, which enables the clearing head to be directly inserted into the sound absorption hole, thereby improving accuracy.

[0012] Preferably, the shutter mechanism comprises a mounting frame fixed in front of the fixing frame, a plurality of linearly distributed shutter plates are rotatably mounted on the inner side of the mounting frame facing outwards through an axle pin, a lower side of each shutter plate away from the end of the noise reduction plate is rotatably connected to a linkage axle plate through an axle pin, a lower end of the linkage axle plate is rotatably connected to the upper surface of the shutter plate below through an axle pin, and a broom is arranged at the upper end of the shutter plate, the broom is in active contact with the outer surface of the dust screen, axle pins are arranged at the front and rear ends of the shutter plate, the axle pins are rotatably plugged into the mounting frame, so that the shutter plate can rotate, and when one of the shutter plates rotates, a plurality of shutter plates will rotate synchronously; A lifting piece is provided at one end of the dust screen close to the rotating rod, one end of the lifting piece is slidably connected to the rotating rod, and the other end of the lifting piece is movably abutted against the lowest louver. When the rotating rod rotates, the louver can swing up and down back and forth through the lifting piece, so that the broom can clean the surface of the dust screen to prevent dust and insects from clogging it and improve the ventilation effect.

[0013] Preferably, the lifting member comprises a fixed guide frame fixed on the dust-proof net, a deflection column is slidably sleeved on the fixed guide frame, an abutment ring is fixed on the deflection column, an abutment spring is sleeved on the deflection column, and the two ends of the abutment spring are respectively connected to the abutment ring and the fixed guide frame, an impact ring is arranged on the rotating rod, and two groups of symmetrically distributed impact parts are arranged on the impact ring, and when the impact ring rotates with the rotating rod, the impact part can intermittently squeeze the deflection column, so that the deflection column moves back and forth, and the deflection column moving back and forth will intermittently cause the louver plate to swing back and forth; An abutment plate is arranged on the inner side of the lowermost louver plate, and the abutment plate contacts the deflection column.

[0014] Beneficial effects of the present invention: 1. A ventilation structure is provided at the left end and the front right of the cabin body, so that convection is formed inside the entire cabin body, and a plurality of noise reduction plates are arranged in parallel in the ventilation structure, and a plurality of evenly distributed sound-absorbing holes are arranged on the surface of the noise reduction plates, so that when the airflow passes through the vents, the noise reduction plates can reflect the sound, and the sound waves generate more interference between the noise reduction plates, further reducing the propagation intensity of the sound waves; 2. By setting a clearing mechanism in the fixed frame, and multiple clearing pieces on the clearing mechanism are respectively located between two adjacent noise reduction plates, the clearing piece can move up and down in coordination with the extended piece, the lifting screw and the rotating rod, and clean the sound-absorbing holes of the noise reduction plate during the movement to prevent them from being blocked by dust, so that the noise reduction effect will not be reduced when used outdoors; 3. By arranging a dust screen in the fixed frame, it can separate larger impurities and effectively prevent the entry of flying insects and debris. In conjunction with the clearing mechanism and the shutter mechanism, the surface of the dust screen can be cleaned to prevent dust and insects from clogging it, thereby improving the ventilation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a power supply cabin with a noise reduction and ventilation structure proposed by the present invention; Figure 2 for Figure 1 Schematic cross-sectional view of ; Figure 3 This is a structural schematic diagram of a fixed frame, a shutter mechanism, and a noise reduction plate in a power supply cabin with a noise reduction ventilation structure proposed by the present invention; Figure 4 for Figure 3 The upper and lower isometric drawings; Figure 5 for Figure 2 The enlarged schematic diagram at A in the middle; Figure 6for Figure 5 Three-dimensional structure diagram of the middle part; Figure 7 for Figure 4 A schematic diagram of a structure in which a dust screen is not provided; Figure 8 for Figure 7 The enlarged schematic diagram of point B in the middle; Fig. 9 This is a structural schematic diagram of a blockage clearing mechanism in a power supply cabin with a noise reduction ventilation structure proposed by the present invention; Fig.10 for Fig. 9 The enlarged schematic diagram at C in the middle; Fig.11 for Fig. 9 A schematic diagram of the structure of the lifting screw and the rotating rod; Fig.12 for Fig.11 Schematic diagram of the transmission structure of the middle transmission gear and the driving wheel; Fig.13 for Fig. 9 Top view of the .

[0016] Numbers in the figure: 1. Cabin body; 2. Shutter mechanism; 21. Mounting frame; 22. Shutter plate; 23. Linkage shaft plate; 24. Broom; 25. Abutment plate; 26. Deflection column; 261. Abutment ring; 27. Impact ring; 271. Impact part; 28. Fixed guide frame; 29. ​​Abutment spring; 3. Fixed frame; 31. Mounting flange; 32. Support plate; 4. Noise reduction plate; 41. Sound absorption hole; 42. Connecting cavity; 5. Dust screen; 6. Clearing mechanism; 61. Clearing plate; 611. Clearing head; 612. Deflection plate; 62. Extension guide rod; 621 , extension guide ring; 63, installation guide rod; 631, lifting screw seat; 632, gap one; 633, gap two; 64, extension piece; 641, moving rod; 642, linkage frame; 643, abutment wheel; 644, extension support plate; 645, shaft rod; 65, lifting screw; 651, fixed frame; 652, toothed pulley; 66, rotating rod; 661, linkage slide groove; 662, driving ring; 663, installation ring; 664, driving part; 67, transmission gear; 68, driving wheel; 681, driving tooth part; 69, clearing spring; 7, ventilation fan. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Reference Figure 1-Figure 13A power supply cabin with a noise reduction and ventilation structure comprises a cabin body 1, a fixing frame 3 is installed on the left and right sides of the cabin body 1 through mounting flanges 31 and screws, a support plate 32 is suspended at the lower part of the fixing frame 3, an installation cavity is formed between the support plate 32 and the upper part of the fixing frame 3, a plurality of noise reduction plates 4 are arranged at equal intervals in the installation cavity, a vent is formed by a spacing between two adjacent noise reduction plates 4, a clearing mechanism 6 for clearing the noise reduction plates 4 is installed between the plurality of noise reduction plates 4, a ventilation fan 7 is installed at the innermost end of the installation cavity, a shutter mechanism 2 is installed at the outermost end of the installation cavity, a dust screen 5 is arranged between the shutter mechanism 2 and the plurality of noise reduction plates 4, and the dust screen 5 is connected to the inner wall of the fixing frame 3 by screws.

[0019] The noise reduction plate 4 is symmetrical and bent in the middle, and a connecting cavity 42 is formed in the hollow inside of the noise reduction plate 4. Sound absorbing holes 41 are formed through the two side surfaces of the noise reduction plate 4, and the sound absorbing holes 41 are connected to the inside of the connecting cavity 42. The noise reduction plate 4 is composed of two metal plates spliced ​​together, and there is an angle between the two metal plates of between 100 and 150 degrees, so that when the airflow passes through the vent, the noise reduction plate 4 can reflect the sound, and the sound waves generate more interference between the noise reduction plates 4, further reducing the propagation intensity of the sound waves; The sound absorption hole 41 is provided with a resonance sound absorption structure. The air in the sound absorption hole 41 is similar to a piston and has a certain sound quality. The closed connecting cavity 42 is similar to an air spring and has a certain elasticity. When the sound wave is transmitted to the cavity mouth, the air column vibrates under the action of the sound wave. The friction with the cavity mouth wall during vibration causes part of the sound energy to be converted into heat energy and dissipated. At the same time, due to the sudden change of acoustic impedance, the sound wave is reflected and interfered, resulting in sound energy attenuation. When the natural frequency of the system resonates with the sound wave frequency, the sound energy consumed is the largest and the sound attenuation is the largest.

[0020] The clearing mechanism 6 includes four groups of lifting screws 65 distributed in a rectangular shape. The four groups of lifting screws 65 are rotatably mounted on the top of the fixed frame 3 and the support plate 32 through bearings. A lifting screw seat 631 is arranged on the lifting screw 65. A mounting guide rod 63 is fixed between the two lifting screw seats 631 on the left and right sides. Multiple groups of clearing members are slidably arranged between the two mounting guide rods 63. A group of clearing members is arranged between every two adjacent noise reduction plates 4. The clearing members include two clearing plates 61. Multiple clearing heads 611 are arranged on one side of the two clearing plates 61 close to the corresponding noise reduction plates 4. An extension guide rod 62 is arranged between two clearing plates 61 of the same clearing member, and the two ends of the extension guide rod 62 are respectively fixed to two mounting guide rods 63, and two extension guide rings 621 are symmetrically slidably sleeved at the front and rear ends of the extension guide rod 62, and two groups of offset plates 612 are rotatably installed on both sides of the extension guide ring 621 through axle pins, and the two groups of offset plates 612 are rotatably connected to the adjacent clearing plates 61 through axle pins, and an extension piece 64 is slidably arranged on the mounting guide rod 63, and the extension piece 64 is movably connected to the extension guide ring 621; The extension piece 64 can make the extension guide ring 621 away from the installation guide rod 63 or close to the installation guide rod 63. When the extension guide ring 621 slides along the extension guide rod 62 and away from the installation guide rod 63, the offset plate 612 will pull the two clearing plates 61 closer to each other, so that the clearing plates 61 are away from the corresponding noise reduction plates 4, and the clearing heads 611 on the clearing plates 61 are away from the sound absorbing holes 41. When the extended guide ring 621 slides along the extended guide rod 62 and approaches the mounting guide rod 63, the offset plate 612 will push the two clearing plates 61 away from each other, so that the clearing plates 61 are close to the corresponding noise reduction plates 4, and the clearing heads 611 on the clearing plates 61 are inserted into the sound absorbing holes 41 to clean the impurities on the inner wall to prevent them from being blocked.

[0021] The installation guide rod 63 is hollow inside to form a moving cavity, and a plurality of evenly spaced notches 632 are provided above the outer ring surface of the installation guide rod 63. The plurality of notches 632 are respectively located between two clearing plates 61 of the same group, and a second notch 633 is provided on one side of the outer ring surface of the installation guide rod 63. The extension member 64 includes a moving rod 641 slidably placed in the moving cavity, a plurality of shafts 645 distributed at equal intervals are fixed to the outer ring of the moving rod 641, the shaft 645 passes through the notch 1 632 and is placed outside the moving cavity, and an extension support plate 644 is rotatably mounted on the shaft 645, the other end of the extension support plate 644 is rotatably connected to the top of the extension guide ring 621 through a pin, a linkage frame 642 is fixed to the moving rod 641, one end of the linkage frame 642 passes through the notch 2 633 and is placed outside the moving cavity, and an abutment wheel is rotatably mounted on the linkage frame 642 through an axle pin. 643, the extension support plate 644 is tilted, and the extension support plate 644 is connected to one end of the shaft rod 645 close to the linkage frame 642. When the moving rod 641 moves along the inside of the moving cavity toward the direction away from the second notch 633, the end of the extension support plate 644 connected to the shaft rod 645 will gradually approach the side of the installation guide rod 63, and the overall length of the extension support plate 644 remains unchanged. At this time, the extension guide ring 621 will be away from the installation guide rod 63, and the two clearing plates 61 will be away from the corresponding noise reduction plate 4, and vice versa. The clearing plates 61 are close to the corresponding noise reduction plates 4; A clearing spring 69 is provided at one end of the installation guide rod 63 away from the second notch 633, and the other end of the clearing spring 69 abuts against the moving rod 641. The clearing spring 69 makes the moving rod 641 tend to move toward the side of the second notch 633, so that the clearing head 611 on the clearing plate 61 can extend into the sound absorption hole 41, thereby cleaning the sound absorption hole 41.

[0022] Two groups of rotating rods 66 are rotatably installed between the top of the fixed frame 3 and the upper end of the support plate 32 through bearings. The two rotating rods 66 are respectively arranged on the outward side of the two groups of lifting screws 65 near the second notch 633. The rotating rods 66 are slidably sleeved with a driving ring 662 up and down. The outer protruding part of the driving ring 662 forms an arc-shaped driving part 664, and the abutting wheel 643 is in rolling contact with the surface of the driving ring 662 and the driving part 664. When the driving part 664 contacts with the abutting wheel 643 and rotates, the driving part 664 pushes the abutting wheel 643 to move toward the end away from the rotating rod 66, so that the entire moving rod 641 is away from the rotating rod 66. At this time, the extended guide ring 621 is away from the installation guide rod 63, and the two clearing plates 61 are away from the corresponding noise reduction plate 4. When the abutting wheel 643 contacts with the surface of the driving ring 662, the moving rod 641 is moved toward the side of the rotating rod 66 under the action of the clearing spring 69, and the two clearing plates 61 are close to the corresponding noise reduction plate 4. A fixing frame 651 is fixed above the lifting screw seat 631, and a bearing is arranged on the fixing frame 651. A mounting ring 663 is integrally arranged on the upper end of the driving ring 662, and the mounting ring 663 is rotatably connected to the fixing frame 651 through the bearing. The lifting screw seat 631 can move up and down under the action of the lifting screw 65, and then the driving ring 662 can move up and down together, so that the extension piece 64 can swing, so that the clearing piece can clean the corresponding noise reduction plate 4; Three groups of linkage grooves 661 are arranged in a circular array on the outer surface of the rotating rod 66, and three linkage sliders are arranged in a ring shape on the inner surface of the mounting ring 663. The linkage sliders are slidably placed in the linkage grooves 661. When the rotating rod 66 rotates, the driving ring 662 can rotate along with it, and the driving ring 662 can also slide up and down on the rotating rod 66.

[0023] A transmission gear 67 is provided at the lower end of the lifting screw 65, and a driving wheel 68 is provided at the lower end of the rotating rod 66. A driving tooth portion 681 meshing with the transmission gear 67 is provided on the outer ring surface of the driving wheel 68. The number of meshing teeth of the driving tooth portion 681 is half of the total number of meshing teeth of the transmission gear 67. The transmission gear 67 and the driving wheel 68 have the same size. For every rotation of the driving wheel 68, the transmission gear 67 rotates half a circle. At this time, the entire lifting screw seat 631 drops a unit distance, which is an integer multiple of the distance between two adjacent sound absorbing holes 41 above and below. The arc length of the driving portion 664 is greater than half of the circumference of the driving ring 662, and the driving portion 664 is located directly above the driving tooth portion 681. When the driving tooth portion 681 is meshed with the transmission gear 67 for transmission, the driving portion 664 will first contact the abutting wheel 643 and move it away from one end of the rotating rod 66. At this time, the clearing head 611 will be outside the sound absorbing hole 41, and then the lifting screw 65 will rotate; When the driving tooth portion 681 is meshing with the transmission gear 67 for transmission, the driving portion 664 will first contact the abutment wheel 643 and move it away from one end of the rotating rod 66. At this time, the clearing head 611 will be outside the sound absorbing hole 41, and then the lifting screw 65 will rotate. After the clearing piece descends a unit distance, the lifting screw 65 does not rotate and the clearing piece descends a unit. After a period of time, the meshing teeth of the driving tooth portion 681 are disengaged from the meshing teeth of the transmission gear 67, and the lifting screw 65 stops rotating. The driving portion 664 will then be disengaged from the abutment wheel 643, and the entire clearing piece moves up and down, thereby not interfering with the normal lifting and lowering of the clearing piece.

[0024] The lifting screw 65 and the rotating rod 66 all pass through the support plate 32 and are located below it, and the driving ring 662 and the transmission gear 67 are all located in the space below the support plate 32. The lower ends of the four lifting screws 65 are all installed with toothed pulleys 652. The four lifting screws 65 rotate synchronously through the toothed pulleys 652 and the toothed belt, and the two rotating rods 66 are connected by the toothed belt and the toothed pulley 652. The lower ends of the two rotating rods 66 are respectively provided with a toothed pulley, and the toothed pulleys on the two rotating rods are connected by a toothed belt, and the bottom end of one of the rotating rods 66 is connected to an external forward and reverse driving motor. The rotating rod 66 can rotate continuously under the action of the driving motor, and it can make the four lifting screws 65 rotate intermittently and synchronously; The direction of the sound absorption hole on the noise reduction plate 4 is designed to be parallel to the installation guide rod 63, and the direction of the clearing head 611 on the clearing plate 61 is designed to be parallel to the installation guide rod 63. The clearing plate 61 slides along the installation guide rod 63, which enables the clearing head 611 to be directly inserted into the sound absorption hole 41, thereby improving accuracy.

[0025] The shutter mechanism 2 includes a mounting frame 21 fixed in front of the fixing frame 3, and a plurality of linearly distributed shutter plates 22 are rotatably mounted on the inner side of the mounting frame 21 facing outwards through an axle pin, and each shutter plate 22 is rotatably connected to a linkage shaft plate 23 at the lower side away from the noise reduction plate 4 through an axle pin, and the lower end of the linkage shaft plate 23 is rotatably connected to the upper surface of the shutter plate 22 below through an axle pin, and a broom 24 is provided at the upper end of the shutter plate 22, and the broom 24 is in active contact with the outer surface of the dust screen 5, and axle pins are provided at the front and rear ends of the shutter plate 22, and the axle pins are rotatably inserted into the mounting frame 21, so that the shutter plate 22 can rotate, and when the lowest shutter plate 22 rotates, the shutter plate 22 will rotate the upper shutter shaft through the linkage shaft plate 23 above it, and so on, so that multiple shutter plates 22 rotate; A lifting piece is provided at one end of the dust screen 5 close to the rotating rod 66, one end of the lifting piece is slidably connected to the rotating rod 66, and the other end of the lifting piece is movably abutted against the lowest louver 22. When the rotating rod 66 rotates, the lifting piece can make the louver 22 swing up and down back and forth, so that the broom 24 can clean the surface of the dust screen 5 to prevent dust and insects from clogging it, thereby improving the ventilation effect.

[0026] The lifting member includes a fixed guide frame 28 fixed on the dust screen 5, a deflection column 26 is slidably sleeved on the fixed guide frame 28, an abutment ring 261 is fixed on the deflection column 26, an abutment spring 29 is sleeved on the deflection column 26, and the two ends of the abutment spring 29 are respectively connected to the abutment ring 261 and the fixed guide frame 28, and an impact ring 27 is provided on the rotating rod 66, and two groups of symmetrically distributed impact parts 271 are provided on the impact ring 27. When the impact ring 27 rotates with the rotating rod 66, the impact part 271 can intermittently squeeze the deflection column 26, so that the deflection column 26 moves back and forth, and the reciprocating deflection column 26 will intermittently make the louver 22 swing back and forth; An abutment plate 25 is provided on the inner side of the lowermost louver 22, and the abutment plate 25 is in contact with the deflection column 26. The lower end of the louver 22 is provided with a corresponding counterweight as needed, so that when the deflection column 26 moves inward and retracts, the louver 22 can swing downward under the action of its own gravity.

[0027] Working principle: A ventilation structure is provided at the left end and the front right of the cabin body 1, so that convection is formed inside the entire cabin body 1, thereby facilitating the circulation of airflow therein, and the corresponding ventilation fan 7 can be turned on as needed to improve the fluidity of the airflow; Since a plurality of noise reduction plates 4 are arranged in parallel in the ventilation structure, and a plurality of evenly distributed sound absorbing holes 41 are arranged on the surface of the noise reduction plates 4, wherein the noise reduction plates 4 are composed of two metal plates spliced ​​together, and there is an angle between the two metal plates, so that when the noise passes through the vent, the noise reduction plates 4 can reflect it, and the sound waves generate more interference between the noise reduction plates 4, further reducing the propagation intensity of the sound waves; The sound absorption hole 41 is provided with a resonant sound absorption structure. The air in the sound absorption hole 41 is similar to a piston and has a certain sound quality. The closed connecting cavity 42 is similar to an air spring and has a certain elasticity. When the sound wave reaches the cavity mouth, the air column vibrates under the action of the sound wave. The friction with the cavity mouth wall during vibration converts part of the sound energy into heat energy and dissipates it. At the same time, due to the sudden change of acoustic impedance, the sound wave is reflected and interfered, resulting in the attenuation of sound energy. When the natural frequency of the system resonates with the sound wave frequency, the sound energy consumed is the largest and the sound attenuation is the largest. Since the power supply cabin is often used outdoors, and the outdoor air may contain dust and other impurities, the airflow may block the sound absorption holes 41 during a long period of flow, resulting in reduced noise reduction effect. At this time, the power supply of the drive motor can be turned on, and the drive motor will cause the two rotating rods 66 to rotate synchronously. Since the rotating rod 66 rotates through the driving wheel 68, the driving gear 681 and the transmission gear 67, this will cause the lifting screw 65 to rotate intermittently. For every rotation of the driving wheel 68, the transmission gear 67 rotates half a circle. At this time, the entire lifting screw seat 631 drops a unit distance, thereby causing multiple clearing parts to drop a unit distance synchronously. Because the arc length of the driving portion 664 is greater than half of the circumference of the driving ring 662, and the driving portion 664 is located directly above the driving tooth portion 681, when the driving tooth portion 681 is meshed with the transmission gear 67, the driving portion 664 will first contact the abutment wheel 643 and move it away from one end of the rotating rod 66. At this time, the clearing head 611 will be outside the sound absorbing hole 41, and then the lifting screw 65 will rotate. After the clearing piece descends a unit distance, the lifting screw 65 does not rotate and the clearing piece descends a unit. After a period of time, the driving tooth portion 68 1 is disengaged from the meshing teeth of the transmission gear 67, and the lifting screw 65 stops rotating, and the driving part 664 is disengaged from the contact with the abutting wheel 643. At this time, the moving rod 641, under the action of the clearing spring 69, makes the moving rod 641 have a tendency to move toward the side of the notch 2 633, so that the clearing head 611 on the clearing plate 61 can extend into the sound absorbing hole 41, so as to clean the sound absorbing hole 41. This cycle is repeated, and the clearing piece moves up and down, so that all the sound absorbing holes 41 on the noise reduction plate 4 can be cleaned. Similarly, when the rotating rod 66 rotates, the impact ring 27 rotates with the rotating rod 66, and the impact part 271 can intermittently squeeze the deflection column 26, so that the deflection column 26 moves back and forth. The reciprocating deflection column 26 will intermittently swing the louver 22 back and forth, so that the broom 24 can clean the surface of the dust screen 5 to prevent dust and insects from clogging it, thereby improving the ventilation effect.

[0028] By arranging a clearing mechanism 6 in the fixed frame 3, and the multiple clearing members on the clearing mechanism 6 are respectively located between two adjacent noise reduction plates 4, and the extension member 64, the lifting screw 65 and the rotating rod 66 are arranged, the clearing member can move up and down, and clean the sound absorbing hole 41 of the noise reduction plate 4 during the movement to prevent it from being blocked by dust, so that the noise reduction effect will not be reduced when it is used outdoors; By arranging a dust-proof net 5 in the fixed frame 3, it is possible to separate larger impurities and effectively prevent the entry of flying insects and debris. In combination with the clearing mechanism 6 and the shutter mechanism 2, the surface of the dust-proof net 5 can be cleaned to prevent dust and insects from clogging it, thereby improving the ventilation effect.

[0029] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power supply shelter with a noise reduction and ventilation structure, characterized in that: The invention comprises a cabin body (1), wherein a fixing frame (3) is installed on the left and right sides of the cabin body (1) by means of a mounting flange (31) and screws, a support plate (32) is suspended at the lower part of the fixing frame (3), an installation cavity is formed between the support plate (32) and the upper part of the fixing frame (3), a plurality of noise reduction plates (4) are arranged at equal intervals in the installation cavity, a vent is formed between two adjacent noise reduction plates (4), a clearing mechanism (6) for clearing the noise reduction plates (4) is installed between the plurality of noise reduction plates (4), a ventilation fan (7) is installed at the innermost end of the installation cavity, a shutter mechanism (2) is installed at the outermost end of the installation cavity, a dust screen (5) is arranged between the shutter mechanism (2) and the plurality of noise reduction plates (4), and the dust screen (5) is connected to the inner wall of the fixing frame (3) by means of screws.

2. The power shelter with noise reduction and ventilation structure according to claim 1, characterized in that: The noise reduction plate (4) is symmetrically and bent in the middle, and a connecting cavity (42) is formed in the hollow interior of the noise reduction plate (4). Sound absorption holes (41) are formed through the surfaces of both sides of the noise reduction plate (4), and the sound absorption holes (41) are connected to the inside of the connecting cavity (42).

3. The power shelter with noise reduction and ventilation structure according to claim 2, characterized in that: The blockage clearing mechanism (6) comprises four groups of lifting screws (65) distributed in a rectangular shape, the four groups of lifting screws (65) are rotatably mounted on the top of the interior of the fixed frame (3) and the support plate (32) via bearings, a lifting screw seat (631) is arranged on the lifting screw (65), a mounting guide rod (63) is fixed between the two left and right lifting screw seats (631), a plurality of groups of blockage clearing members are slidably arranged between the two mounting guide rods (63), a group of blockage clearing members is arranged between each two adjacent noise reduction plates (4), the blockage clearing members comprise two blockage clearing plates (61), and a plurality of blockage clearing heads (611) are arranged on one side of the two blockage clearing plates (61) close to the corresponding noise reduction plates (4); An extension guide rod (62) is arranged between two clearing plates (61) of the same group of clearing members, and two ends of the extension guide rod (62) are respectively fixed to two mounting guide rods (63), and two extension guide rings (621) are symmetrically slidably sleeved on the front and rear ends of the extension guide rod (62), and two groups of offset plates (612) are rotatably mounted on both sides of the extension guide ring (621) through axle pins, and the two groups of offset plates (612) are rotatably connected to adjacent clearing plates (61) through axle pins, and an extension member (64) is slidably arranged on the mounting guide rod (63), and the extension member (64) is movably connected to the extension guide ring (621).

4. The power shelter with noise reduction and ventilation structure according to claim 3, characterized in that: The installation guide rod (63) is hollow inside to form a moving cavity, a plurality of notches (632) distributed at equal intervals are provided above the outer ring surface of the installation guide rod (63), the plurality of notches (632) are respectively located between two clearing plates (61) of the same group, and a second notch (633) is provided on one side of the outer ring surface of the installation guide rod (63); The extension member (64) comprises a moving rod (641) slidably placed in the moving cavity, a plurality of shafts (645) distributed at equal intervals are fixed to the outer ring of the moving rod (641), the shaft (645) passes through the first notch (632) and is placed outside the moving cavity, and an extension support plate (644) is rotatably mounted on the shaft (645), the other end of the extension support plate (644) is rotatably connected to the top of the extension guide ring (621) via an axle pin, a linkage frame (642) is fixed to the moving rod (641), the other end of the linkage frame (642) passes through the second notch (633) and is placed outside the moving cavity, and an abutment wheel (643) is rotatably mounted on the linkage frame (642) via an axle pin; A clearing spring (69) is provided at one end of the installation guide rod (63) away from the second notch (633), and the other end of the clearing spring (69) is in contact with the moving rod (641).

5. The power shelter with noise reduction and ventilation structure according to claim 4, characterized in that: Two groups of rotating rods (66) are rotatably mounted between the top end of the fixed frame (3) and the upper end of the support plate (32) via bearings. The two rotating rods (66) are respectively arranged on the outward side of the two groups of lifting screws (65) near the second notch (633). The rotating rods (66) are slidably sleeved with a driving ring (662) up and down. The protruding portion of the outer ring of the driving ring (662) forms a driving portion (664) with an arc structure. The abutting wheel (643) is in rolling contact with the surfaces of the driving ring (662) and the driving portion (664). A fixing frame (651) is fixed above the lifting screw seat (631), a bearing is provided on the fixing frame (651), a mounting ring (663) is integrally provided at the upper end of the driving ring (662), and the mounting ring (663) is rotatably connected to the fixing frame (651) via the bearing; The outer ring surface of the rotating rod (66) is provided with three groups of linkage sliding grooves (661) in a circular array, and the inner ring of the mounting ring (663) is provided with three linkage sliding blocks in a ring shape, and the linkage sliding blocks are slidably placed in the linkage sliding grooves (661).

6. The power shelter with noise reduction and ventilation structure according to claim 5, characterized in that: A transmission gear (67) is disposed at the lower end of the lifting screw (65), a driving wheel (68) is disposed at the lower end of the rotating rod (66), and a driving tooth portion (681) meshing with the transmission gear (67) is disposed on the outer ring surface of the driving wheel (68), and the number of meshing teeth of the driving tooth portion (681) is half of the total number of meshing teeth of the transmission gear (67); The arc length of the driving portion (664) is greater than half the circumference of the driving ring (662), and the driving portion (664) is located directly above the driving tooth portion (681).

7. The power shelter with noise reduction and ventilation structure according to claim 6, characterized in that: The lifting screws (65) and the rotating rods (66) all pass through the support plate (32) and are located below it, and the driving ring (662) and the transmission gear (67) are all located in the space below the support plate (32). The lower ends of the four lifting screws (65) are all installed with toothed belt wheels (652). The four lifting screws (65) rotate synchronously through the toothed belt wheels (652) and the toothed belt, and the two rotating rods (66) are connected through the toothed belts and the toothed belt wheels (652). The direction of the sound absorbing holes on the noise reduction plate (4) is designed to be parallel to the installation guide rod (63), and the direction of the clearing head (611) on the clearing plate (61) is designed to be parallel to the installation guide rod (63).

8. The power shelter with noise reduction and ventilation structure according to claim 5, characterized in that: The shutter mechanism (2) comprises a mounting frame (21) fixed in front of a fixing frame (3); a plurality of linearly distributed shutter plates (22) are rotatably mounted on an outward side of the mounting frame (21) via an axle pin; a linkage shaft plate (23) is rotatably connected below one end of each shutter plate (22) away from the noise reduction plate (4) via an axle pin; the lower end of the linkage shaft plate (23) is rotatably connected to the upper surface of the shutter plate (22) below via an axle pin; and a broom (24) is provided at the upper end of the shutter plate (22), and the broom (24) is in active contact with the outer surface of the dust screen (5); A lifting member is provided at one end of the dust screen (5) close to the rotating rod (66); one end of the lifting member is slidably connected to the rotating rod (66), and the other end of the lifting member is movably abutted against the lowermost louver plate (22).

9. The power shelter with noise reduction and ventilation structure according to claim 8, characterized in that: The lifting member comprises a fixed guide frame (28) fixed on the dust-proof net (5); a deflection column (26) is slidably sleeved on the fixed guide frame (28) in a forward and backward manner; an abutment ring (261) is fixed on the deflection column (26); an abutment spring (29) is sleeved on the deflection column (26); and two ends of the abutment spring (29) are respectively connected to the abutment ring (261) and the fixed guide frame (28); an impact ring (27) is provided on the rotating rod (66); and two groups of symmetrically distributed impact parts (271) are provided on the impact ring (27); An abutment plate (25) is provided on the inner side of the lowermost louver plate (22), and the abutment plate (25) is in contact with the deflection column (26).

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