Noise reduction device for charging pile

Abstract

The invention discloses a charging pile noise reduction device, and relates to the technical field of charging pile noise reduction devices. The noise reduction mechanism comprises a sound insulation cover fixedly connected to the side wall of the charging pile body, a plurality of mounting rods are slidably connected to the inner wall of the sound insulation cover, two mounting plates are symmetrically and rotatably connected to the side walls of the mounting rods, mounting grooves are formed in the side walls of the mounting plates, and a plurality of first springs are fixedly connected to the inner walls of the mounting grooves; the other ends of the multiple first springs are jointly and fixedly connected with a noise reduction plate. Noise can be transmitted in the sound insulation cover in a sound wave mode, when sound waves are transmitted to the surfaces of the noise reduction plates, the sound waves can be reflected on the surfaces of the noise reduction plates, the multiple noise reduction plates are arranged in an up-down staggered mode, the sound waves can be repeatedly reflected between every two adjacent noise reduction plates, and therefore the length of a sound wave propagation path is increased; the sound waves are gradually consumed in the propagation process, so that the noise intensity is reduced by increasing the length of a sound wave propagation path.

Description

Technical Field

[0001] This invention relates to the field of noise reduction devices for charging piles, and more particularly to a noise reduction device for charging piles. Background Technology

[0002] Charging piles are devices that provide charging services for electric vehicles and hybrid vehicles. With the rapid development of the new energy vehicle market, charging piles have also become widely used.

[0003] Currently, charging piles typically use ventilation to dissipate heat during use, employing a motor-driven fan to increase airflow within the charging pile. However, the motor itself generates noise due to vibration during operation, causing noise pollution. Additionally, some motors are installed and secured with bolts, and the vibration generated by the motor over a long period can cause the bolts to loosen. Loose bolts will produce stronger vibrations, resulting in even greater noise.

[0004] Based on this, we propose a noise reduction device for charging piles. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a noise reduction device for charging piles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A noise reduction device for a charging pile includes the charging pile body; The noise reduction mechanism includes a soundproof cover fixedly connected to the side wall of the charging pile body. Multiple mounting rods are slidably connected to the inner wall of the soundproof cover. Two mounting plates are symmetrically rotatably connected to the side walls of the mounting rods. Mounting grooves are formed on the side walls of the mounting plates. Multiple first springs are fixedly connected to the inner walls of the mounting grooves. A noise reduction plate is fixedly connected to the other ends of the multiple first springs. Multiple sliding grooves are formed on the inner wall of the soundproof cover. Two sliders are symmetrically slidably connected to the inner walls of the sliding grooves. The other end of each mounting plate is rotatably connected to the corresponding slider. A sliding rod is fixedly connected to the inner wall of the sliding groove. The side walls of the sliding rods are slidably connected to the sliders. A second spring is sleeved on the side walls of the sliding rods. The two ends of the second spring are respectively fixedly connected to the side walls of the two sliders. The soundproof cover is equipped with a drive mechanism that drives the slider to slide.

[0007] Preferably, the charging pile body has a ventilation opening on its side wall, a vertical plate is fixedly connected to the inner wall of the ventilation opening, a rotating shaft is rotatably connected to the side wall of the vertical plate, a plurality of fan blades are fixedly connected to the side wall of the rotating shaft, and a motor is fixedly connected to the inner wall of the soundproof cover through a bracket, and the output end of the motor passes through the side wall of the vertical plate and is fixedly connected to the rotating shaft.

[0008] Preferably, the drive mechanism includes multiple cavities formed inside the soundproof enclosure, with a sliding plate slidably connected to the inner wall of each cavity, a connecting rod fixedly connected to the side wall of the sliding plate, and the other end of the connecting rod extending into the cavity and fixedly connected to the sliding plate.

[0009] Preferably, the drive mechanism further includes a sound-reducing groove formed on the inner wall of the soundproof cover. A sliding plug is slidably connected to the inner wall of the sound-reducing groove. A third spring is fixedly connected between the sliding plug and the inner wall of the sound-reducing groove. The sound-reducing groove is connected to the cavity through a one-way air supply pipe. The sound-reducing groove is connected to the inside of the charging pile body through a one-way air intake pipe. An exhaust hole is formed on the inner wall of the cavity.

[0010] Preferably, the diameter of the exhaust port is smaller than the diameter of the one-way air supply pipe.

[0011] Preferably, a sound-absorbing mechanism is installed inside the sound-reducing groove. The sound-absorbing mechanism includes a vibrating diaphragm plate fixedly connected to the inner wall of the sound-reducing groove, a vertical rod fixedly connected to the upper end of the vibrating diaphragm plate, a glass plate slidably connected to the inner wall of the sound-reducing groove, and the upper end of the vertical rod fixedly connected to the glass plate.

[0012] Preferably, an electromagnet is fixedly connected to the inner wall of the mounting groove, the noise reduction plate is made of magnetic material, a piezoelectric ceramic sheet is fixedly connected to the lower end of the sliding plug, and the piezoelectric ceramic sheet and the electromagnet are electrically connected by a wire.

[0013] Preferably, a first dustproof net is fixedly connected to the inner wall of the soundproof cover, and an exhaust vent is opened on the side wall of the charging pile body. A second dustproof net is fixedly connected to the inner wall of the exhaust vent. Both the first dustproof net and the second dustproof net are made of metal materials.

[0014] Preferably, the inner wall of the sound-reducing groove is embedded with a silk layer, and the glass plate, the first dustproof net and the second dustproof net are connected by a wire.

[0015] The present invention has the following beneficial effects: 1. By setting up a noise reduction mechanism, noise will be transmitted in the form of sound waves inside the soundproof enclosure. When the sound waves are transmitted to the surface of the noise reduction plate, they will be reflected on the surface of the noise reduction plate. By setting up multiple noise reduction plates in an alternating manner, the sound waves will be reflected repeatedly between two adjacent noise reduction plates, thereby increasing the length of the sound wave propagation path. The sound waves will be gradually consumed during the propagation process, thereby reducing the noise intensity by increasing the length of the sound wave propagation path. 2. By setting up a drive mechanism and a sound absorption mechanism, the greater the noise inside the soundproof enclosure, the greater the amplitude of the vibration of the diaphragm plate, and consequently the greater the amplitude of the sliding of the slider, the more air is pumped into the cavity, the greater the sliding distance of the two sliders, and the greater the angle between the two noise reduction plates. At this time, the reflection angle generated by the sound wave transmitted to the surface of the noise reduction plate will be smaller, and the sound wave will reflect more times between the two adjacent noise reduction plates, the sound wave propagation path will be longer, and the more sound wave is consumed, which can enhance the noise elimination effect. Therefore, the noise reduction intensity can be automatically adjusted according to the noise level generated inside the soundproof enclosure. 3. By setting up a piezoelectric ceramic sheet and an electromagnet, the piezoelectric ceramic sheet is struck each time the glass plate pushes the slider, causing the piezoelectric ceramic sheet to generate a momentary current. This momentary current then flows into the electromagnet, causing it to generate a momentary magnetic attraction force that attracts the noise reduction plate to move. When the electromagnet's magnetic force disappears, the noise reduction plate will return to its original position under the action of the first spring. Since the first spring has a flexible tension, the noise reduction plate will vibrate continuously when it returns to its original position. Therefore, the vibration frequency generated by the noise reduction plate can cancel out part of the sound wave frequency, thereby reducing the sound wave intensity to a certain extent and further enhancing the noise reduction effect. 4. By setting a silk layer, the glass plate will rub against the silk layer when it slides back and forth, making the silk layer negatively charged and the glass plate positively charged. The glass plate is connected to the first and second dustproof nets through wires. In order to balance the charges, the negative charges on the first and second dustproof nets will be transferred to the glass plate through the wires, thus making the first and second dustproof nets positively charged. Since most dust carries a negative charge, the dust will be adsorbed by the first and second dustproof nets when it passes through them, thereby enhancing the dust blocking effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a charging pile noise reduction device proposed in this invention; Figure 2 for Figure 1 Side view of the middle structure; Figure 3 for Figure 1 Cross-sectional view of the middle structure; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the diagram; Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B in the diagram; Figure 6 for Figure 3 A magnified schematic diagram of the structure at point C.

[0017] In the diagram: 1. Charging pile body; 2. Soundproof cover; 3. Ventilation opening; 4. Vertical plate; 5. Rotating shaft; 6. Fan blade; 7. Motor; 8. Mounting rod; 9. Mounting plate; 10. Mounting groove; 11. Noise reduction plate; 12. First spring; 13. Slide groove; 14. Slider; 15. Slide rod; 17. Cavity; 18. Slide plate; 19. Connecting rod; 20. Noise reduction groove; 21. Slide plug; 22. One-way air supply pipe; 23. One-way air intake pipe; 24. Second spring; 25. Vibrating diaphragm plate; 26. Vertical rod; 27. Glass plate; 28. Electromagnet; 29. ​​Piezoelectric ceramic plate; 30. Exhaust hole; 31. First dustproof net; 32. Exhaust vent; 33. Second dustproof net; 34. Silk layer; 35. Third spring. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Reference Figure 1 - Figure 6 A noise reduction device for a charging pile includes a charging pile body 1. The noise reduction mechanism includes a soundproof cover 2 fixedly connected to the side wall of the charging pile body 1. The soundproof cover 2 is made of soundproof material, such as... Figure 3 As shown, multiple mounting rods 8 are slidably connected to the inner wall of the soundproof enclosure 2. Two mounting plates 9 are symmetrically rotatably connected to the side walls of the mounting rods 8. Mounting grooves 10 are formed on the side walls of the mounting plates 9. Multiple first springs 12 are fixedly connected to the inner wall of the mounting grooves 10. A noise reduction plate 11 is fixedly connected to the other end of each of the multiple first springs 12. Figure 5 As shown, the inner wall of the soundproof cover 2 is provided with multiple sliding grooves 13. Two sliders 14 are symmetrically slidably connected to the inner wall of the sliding groove 13. The other end of each mounting plate 9 is rotatably connected to the corresponding slider 14. A sliding rod 15 is fixedly connected to the inner wall of the sliding groove 13. The side wall of the sliding rod 15 is slidably connected to the slider 14. A second spring 24 is sleeved on the side wall of the sliding rod 15. The two ends of the second spring 24 are fixedly connected to the side walls of the two sliders 14 respectively. The soundproof enclosure 2 is equipped with a drive mechanism that drives the slider 14 to slide.

[0020] The charging pile body 1 has a ventilation opening 3 on its side wall. A vertical plate 4 is fixedly connected to the inner wall of the ventilation opening 3. A rotating shaft 5 is rotatably connected to the side wall of the vertical plate 4. Multiple fan blades 6 are fixedly connected to the side wall of the rotating shaft 5. A motor 7 is fixedly connected to the inner wall of the soundproof cover 2 through a bracket. The output end of the motor 7 passes through the side wall of the vertical plate 4 and is fixedly connected to the rotating shaft 5.

[0021] Furthermore, the noise generated by the motor 7 during operation will be blocked by the soundproof cover 2, which can achieve a certain noise reduction effect. In addition, the noise generated by the motor 7 will be transmitted in the form of sound waves inside the soundproof cover 2. When the sound waves are transmitted to the surface of the noise reduction plate 11, they will be reflected on the surface of the noise reduction plate 11. Through the staggered arrangement of multiple noise reduction plates 11, the sound waves will be repeatedly reflected between two adjacent noise reduction plates 11, thereby increasing the length of the sound wave propagation path. The sound waves will be gradually consumed during the propagation process, thereby reducing the noise intensity by increasing the length of the sound wave propagation path.

[0022] It should be noted that the number of noise reduction panels 11 can be set according to actual needs, which can achieve different levels of noise reduction.

[0023] The drive mechanism includes multiple cavities 17 opened inside the soundproof enclosure 2. A slide plate 18 is slidably connected to the inner wall of the cavity 17. A connecting rod 19 is fixedly connected to the side wall of the slider 14. The other end of the connecting rod 19 extends into the cavity 17 and is fixedly connected to the slide plate 18.

[0024] The drive mechanism also includes a sound-reducing groove 20 formed on the inner wall of the soundproof cover 2. A sliding plug 21 is slidably connected to the inner wall of the sound-reducing groove 20. A third spring 35 is fixedly connected between the sliding plug 21 and the inner wall of the sound-reducing groove 20. The sound-reducing groove 20 is connected to the cavity 17 through a one-way air supply pipe 22. The one-way air supply pipe 22 only allows air from the sound-reducing groove 20 to enter the cavity 17. The sound-reducing groove 20 is connected to the interior of the charging pile body 1 through a one-way air intake pipe 23. The one-way air intake pipe 23 only allows air from the charging pile body 1 to enter the sound-reducing groove 20. An exhaust hole 30 is formed on the inner wall of the cavity 17.

[0025] The diameter of the exhaust port 30 is smaller than the diameter of the one-way air supply pipe 22, so that the exhaust speed in the cavity 17 is less than the intake speed. Therefore, when air enters the cavity 17, it can push the slide plate 18 to slide.

[0026] The sound-absorbing mechanism is installed inside the sound-absorbing groove 20. The sound-absorbing mechanism includes a vibrating diaphragm plate 25 fixedly connected to the inner wall of the sound-absorbing groove 20, a vertical rod 26 fixedly connected to the upper end of the vibrating diaphragm plate 25, and a glass plate 27 slidably connected to the inner wall of the sound-absorbing groove 20. The upper end of the vertical rod 26 is fixedly connected to the glass plate 27.

[0027] Furthermore, the vibration generated by the motor 7 during operation is transmitted in the form of sound waves. These sound waves are absorbed by the diaphragm 25 within the sound-reducing groove 20, causing the diaphragm 25 to vibrate. The diaphragm 25, via the vertical rod 26, drives the glass plate 27 to slide back and forth on the inner wall of the sound-reducing groove 20. Consequently, the glass plate 27 pushes the sliding plug 21 to slide back and forth. In conjunction with the third spring 35, the sliding plug 21 slides back and forth in a sealing manner on the inner wall of the sound-reducing groove 20. As a result, the air inside the charging pile body 1 is drawn into the sound-reducing groove 20 through the one-way air intake pipe 23. Then, the air in the sound-reducing groove 20 enters the cavity 17 through the one-way air supply pipe 22, increasing the pressure inside the cavity 17. This increases the pressure inside the cavity 17, thereby pushing the slide plate 18 to slide within the cavity 17. The slide plate 18, via the connecting rod 19, drives the two sliders 14 in the slide groove 13 to slide away from each other. The two mounting plates 9 move downwards and rotate synchronously to both sides, increasing the angle between them. Consequently, the angle between the two noise-reducing plates 11 also increases synchronously, thus changing the sound wave reflection angle. The greater the noise inside the soundproof enclosure 2, the greater the vibration amplitude of the diaphragm plate 25, and the greater the reciprocating sliding amplitude of the slider 21. This results in more air being pumped into the cavity 17, a greater sliding distance for the two sliders 14, and a larger angle between the two noise-reducing plates 11. At this time, the reflection angle generated by the sound wave reaching the surface of the noise-reducing plate 11 is smaller, resulting in more reflections of the sound wave between adjacent noise-reducing plates 11, a longer sound wave propagation path, and more sound wave consumption. This enhances the noise reduction effect. Therefore, the noise reduction intensity can be automatically adjusted according to the noise level generated inside the soundproof enclosure 2.

[0028] It is worth mentioning that when the one-way air intake pipe 23 draws out the air inside the charging pile body 1, it can draw out the hot air inside the charging pile body 1, thereby enhancing the heat dissipation effect.

[0029] An electromagnet 28 is fixedly connected to the inner wall of the mounting slot 10. The noise reduction plate 11 is made of magnetic material. A piezoelectric ceramic sheet 29 is fixedly connected to the lower end of the slide plug 21. The piezoelectric ceramic sheet 29 and the electromagnet 28 are electrically connected by a wire.

[0030] Furthermore, each time the glass plate 27 pushes the slider 21, it impacts the piezoelectric ceramic sheet 29, causing the piezoelectric ceramic sheet 29 to generate a momentary current. Consequently, a momentary current is passed through the electromagnet 28, causing the electromagnet 28 to generate a momentary magnetic attraction force, which attracts the noise reduction plate 11 to move. When the magnetic force of the electromagnet 28 disappears, the noise reduction plate 11 will reset under the action of the first spring 12. Since the first spring 12 has a flexible tension, the noise reduction plate 11 will generate continuous vibration when it resets and moves. Therefore, the vibration frequency generated by the noise reduction plate 11 can cancel out part of the sound wave frequency, thereby reducing the sound wave intensity to a certain extent and further enhancing the noise reduction effect.

[0031] The inner wall of the soundproof cover 2 is fixedly connected to a first dustproof net 31, and the side wall of the charging pile body 1 is provided with an exhaust vent 32. The inner wall of the exhaust vent 32 is fixedly connected to a second dustproof net 33. Both the first dustproof net 31 and the second dustproof net 33 are made of metal materials.

[0032] The inner wall of the sound-reducing groove 20 is embedded with a silk layer 34, and the glass plate 27, the first dustproof net 31 and the second dustproof net 33 are connected by a wire.

[0033] Furthermore, as the glass plate 27 slides back and forth, it will generate friction with the silk layer 34, causing the silk layer 34 to become negatively charged and the glass plate 27 to become positively charged. The glass plate 27 is connected to the first dustproof net 31 and the second dustproof net 33 through wires. In order to balance the charges, the negative charges on the first dustproof net 31 and the second dustproof net 33 will be transferred to the glass plate 27 through the wires, thereby making the first dustproof net 31 and the second dustproof net 33 positively charged. Since most dust carries a negative charge, when dust passes through the first dustproof net 31 and the second dustproof net 33, it will be adsorbed by the first dustproof net 31 and the second dustproof net 33, thereby enhancing the dust blocking effect.

[0034] In this invention, the drive motor 7 drives the rotating shaft 5 to rotate, which in turn drives multiple fan blades 6 to rotate. Under the action of the fan blades 6, external cold air will enter the charging pile body 1 through the sound insulation cover 2 and the ventilation port 3. Then, the air inside the charging pile body 1 will be discharged through the exhaust port 32, thereby increasing the air circulation speed inside the charging pile body 1 and achieving a heat dissipation effect. In addition, the dust in the air will be blocked by the first dustproof net 31 and the second dustproof net 33, thereby preventing dust from entering the charging pile body 1 and causing a short circuit in the electrical equipment inside the charging pile body 1.

[0035] The noise generated by the motor 7 during operation will be blocked by the soundproof cover 2, which can achieve a certain noise reduction effect. In addition, the noise generated by the motor 7 will be transmitted in the form of sound waves inside the soundproof cover 2. When the sound waves are transmitted to the surface of the noise reduction plate 11, they will be reflected on the surface of the noise reduction plate 11. By staggering the upper and lower parts of multiple noise reduction plates 11, the sound waves will be repeatedly reflected between two adjacent noise reduction plates 11, thereby increasing the length of the sound wave propagation path. The sound waves will be gradually consumed during the propagation process, thereby reducing the noise intensity by increasing the length of the sound wave propagation path.

[0036] The vibration generated by the motor 7 during operation is transmitted in the form of sound waves. These sound waves are absorbed by the diaphragm 25 within the sound-reducing groove 20, causing the diaphragm 25 to vibrate. The diaphragm 25, via the vertical rod 26, drives the glass plate 27 to slide back and forth on the inner wall of the sound-reducing groove 20. This, in turn, pushes the sliding plug 21 to slide back and forth. Combined with the third spring 35, the sliding plug 21 reciprocates and seals the inner wall of the sound-reducing groove 20. Air inside the charging pile body 1 is then drawn into the sound-reducing groove 20 through the one-way air intake pipe 23. The air in the sound-reducing groove 20 then enters the cavity 17 through the one-way air supply pipe 22, increasing the pressure within the cavity 17. This increases the pressure on the sliding plate 18, causing it to slide within the cavity 17. The sliding plate 18, via the connecting rod 19, drives the two sliders 14 in the sliding groove 13 to slide away from each other. Consequently, the two mounting plates 9 move downwards and rotate synchronously to both sides, causing the two mounting plates 9 to... As the angle increases, the angle between the two noise-reducing plates 11 will increase synchronously, thereby changing the reflection angle of the sound waves. When the noise inside the soundproof enclosure 2 is greater, the vibration amplitude of the diaphragm plate 25 will be greater, and the reciprocating amplitude of the slider 21 will be greater, resulting in more air being pumped into the cavity 17. The sliding distance of the two sliders 14 will be greater, and the angle between the two noise-reducing plates 11 will be greater. At this time, the reflection angle generated by the sound waves transmitted to the surface of the noise-reducing plate 11 will be smaller, resulting in more reflections of the sound waves between the two adjacent noise-reducing plates 11, a longer sound wave propagation path, and more sound wave consumption, which can enhance the noise elimination effect. Therefore, the noise reduction intensity can be automatically adjusted according to the noise level generated inside the soundproof enclosure 2. Each time the pumping of air into the cavity 17 stops, the air inside the cavity 17 will be discharged through the exhaust port 30, and the slider 14 will be reset under the action of the second spring 24, so that the noise-reducing plate 11 is reset.

[0037] In addition, each time the glass plate 27 pushes the slider 21, it will strike the piezoelectric ceramic plate 29, causing the piezoelectric ceramic plate 29 to generate a momentary current. In turn, the electromagnet 28 will be supplied with a momentary current, causing the electromagnet 28 to generate a momentary magnetic attraction force, attracting the noise reduction plate 11 to move. When the magnetic force of the electromagnet 28 disappears, the noise reduction plate 11 will return to its original position under the action of the first spring 12. Since the first spring 12 has a flexible tension, the noise reduction plate 11 will generate continuous vibration when it returns to its original position. Therefore, the vibration frequency generated by the noise reduction plate 11 can cancel out part of the sound wave frequency, which can reduce the sound wave intensity to a certain extent, thereby further enhancing the noise reduction effect.

[0038] When the glass plate 27 slides back and forth, it will rub against the silk layer 34, causing the silk layer 34 to become negatively charged and the glass plate 27 to become positively charged. The glass plate 27 is connected to the first dustproof net 31 and the second dustproof net 33 through wires. In order to balance the charges, the negative charges on the first dustproof net 31 and the second dustproof net 33 will be transferred to the glass plate 27 through the wires, thereby making the first dustproof net 31 and the second dustproof net 33 positively charged. Since most dust carries a negative charge, when dust passes through the first dustproof net 31 and the second dustproof net 33, it will be adsorbed by the first dustproof net 31 and the second dustproof net 33, thereby enhancing the dust blocking effect.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A charging pile noise reduction device, characterized in that, Include: Charging pile body (1); Noise reduction mechanism, the noise reduction mechanism includes sound insulation cover (2) fixedly connected on the side wall of the charging pile body (1), a plurality of mounting rods (8) are slidably connected to the inner wall of the sound insulation cover (2), two mounting plates (9) are symmetrically rotatably connected to the side wall of the mounting rod (8), a mounting groove (10) is formed in the side wall of the mounting plate (9), a plurality of first springs (12) are fixedly connected to the inner wall of the mounting groove (10), a plurality of the first springs (12) are fixedly connected to the other end of the noise reduction plate (11), a plurality of sliding grooves (13) are formed in the inner wall of the sound insulation cover (2), two sliding blocks (14) are symmetrically slidably connected to the inner wall of the sliding groove (13), the other end of each mounting plate (9) is rotatably connected to the corresponding sliding block (14), a slide rod (15) is fixedly connected to the inner wall of the sliding groove (13), the slide rod (15) is slidably connected to the sliding block (14), the slide rod (15) is sleeved with a second spring (24), and the second spring (24) is fixedly connected to the side wall of the two sliding blocks (14). The sound insulation cover (2) is provided with a driving mechanism for driving the sliding block (14) to slide.

2. The charging pile noise reduction device according to claim 1, characterized in that, Wherein: The side wall of the charging pile body (1) is provided with a ventilation opening (3), the inner wall of the ventilation opening (3) is fixedly connected with a vertical plate (4), the side wall of the vertical plate (4) is rotatably connected with a rotating shaft (5), a plurality of fan leaves (6) are fixedly connected to the side wall of the rotating shaft (5), the inner wall of the sound insulation cover (2) is fixedly connected with a motor (7) through a support, and the output end of the motor (7) penetrates the side wall of the vertical plate (4) and is fixedly connected with the rotating shaft (5).

3. The charging pile noise reduction device according to claim 1, characterized in that, Wherein: The driving mechanism includes a plurality of cavities (17) formed in the sound insulation cover (2), the inner wall of the cavity (17) is sealingly slidably connected with a sliding plate (18), the side wall of the sliding block (14) is fixedly connected with a connecting rod (19), and the other end of the connecting rod (19) extends into the cavity (17) and is fixedly connected with the sliding plate (18).

4. The charging pile noise reduction device according to claim 3, characterized in that, Wherein: The driving mechanism further includes a sound reduction groove (20) formed in the inner wall of the sound insulation cover (2), the inner wall of the sound reduction groove (20) is sealingly slidably connected with a sliding plug (21), the sliding plug (21) and the inner wall of the sound reduction groove (20) are fixedly connected with a third spring (35), the sound reduction groove (20) is communicated with the cavity (17) through a one-way air supply pipe (22), the sound reduction groove (20) is communicated with the inside of the charging pile body (1) through a one-way air inlet pipe (23), and the inner wall of the cavity (17) is provided with an air exhaust hole (30).

5. The charging pile noise reduction device according to claim 4, characterized in that, Wherein: The diameter of the air exhaust hole (30) is smaller than the diameter of the one-way air supply pipe (22).

6. The charging pile noise reduction device according to claim 4, characterized in that, Wherein: The sound reduction groove (20) is provided with a sound absorption mechanism, the sound absorption mechanism includes a vibrating diaphragm (25) fixedly connected to the inner wall of the sound reduction groove (20), the upper end of the vibrating diaphragm (25) is fixedly connected with a vertical rod (26), the inner wall of the sound reduction groove (20) is slidably connected with a glass plate (27), and the upper end of the vertical rod (26) is fixedly connected with the glass plate (27).

7. The charging pile noise reduction device according to claim 4, characterized in that, Wherein: The inner wall of the mounting groove (10) is fixedly connected with an electromagnet (28), the noise reduction plate (11) is made of magnetic material, the lower end of the sliding plug (21) is fixedly connected with a piezoelectric ceramic sheet (29), and the piezoelectric ceramic sheet (29) and the electromagnet (28) are electrically connected through wires.

8. The charging pile noise reduction device according to claim 7, characterized in that, Wherein: The inner wall of the soundproof cover (2) is fixedly connected with a first dust screen (31), the side wall of the charging pile body (1) is provided with an air outlet (32), the inner wall of the air outlet (32) is fixedly connected with a second dust screen (33), and the first dust screen (31) and the second dust screen (33) are both made of metal material.

9. The charging pile noise reduction device according to claim 8, characterized in that, Wherein: The inner wall of the sound reduction groove (20) is embedded with a silk layer (34), and the glass plate (27), the first dust screen (31) and the second dust screen (33) are connected through wires.

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