Waterproof and dustproof integrated electric energy metering box shell

Abstract

The present application relates to the technical field of electric energy metering box, especially to a waterproof and dustproof integrated electric energy metering box shell, which comprises a cabinet body, groove body assemblies are arranged on both sides of the cabinet body, a dust filter screen is embedded in each groove body assembly, cleaning assemblies are arranged on both sides of the cabinet body, two shielding assemblies are arranged in the cabinet body, two rotating shafts are rotatably connected to the open part of the cabinet body, and cabinet doors are fixedly connected to the rotating shafts; after the improvement of the prior art, the cleaning assemblies can be automatically lifted by the opening and closing action of the cabinet doors, the dust on the surface of the dust filter screen is uniformly scraped by the silica gel blocks on the surface of the scraper, and the dust that is cleaned off can be directly discharged outside the cabinet body through the storage groove, the ventilation groove and the dust discharge groove that are connected inside the groove body assembly, so that secondary pollution caused by dust accumulation is avoided, manual cleaning is not needed, the degree of automation is high, the dust filter screen is effectively ensured to be long-term permeable, and the heat dissipation and ventilation effect inside the cabinet body is stably maintained.

Description

Technical Field

[0001] This invention relates to the field of electricity metering box technology, and in particular to a waterproof and dustproof integrated electricity metering box housing. Background Technology

[0002] A metering box is a collection of metering instruments and auxiliary equipment necessary for measuring electrical energy, including electricity meters, voltage and current transformers and their secondary circuits, electricity metering panels, cabinets, and boxes. Metering boxes can be installed in a suspended or floor-mounted manner. To ensure installation quality, suspended boxes must be secured with built-in expansion bolts, and the bolt dimensions must meet safety and security requirements, as well as outdoor installation conditions.

[0003] Chinese patent CN121863205A discloses an integrated intelligent electricity metering box. During maintenance, the rain shield can be pulled up to the top of the box door to shield the electrical components inside the box, thereby reducing the possibility of the electrical components getting wet from rain. Maintenance personnel can have more time to repair the internal electrical components and avoid problems caused by emergency repairs.

[0004] The above solution still has the following problems: First, key components such as internal terminal blocks and circuit breakers are exposed to the air for a long time, and dust accumulation and condensation can lead to poor contact, overheating, and even fire hazards; Second, dust will accumulate on the dustproof net after long-term use, requiring regular manual cleaning; Third, in rainy environments, rainwater can directly enter the interior of the outdoor metering box during maintenance, causing short circuits and damage to electrical components.

[0005] Therefore, it is necessary to improve upon the shortcomings of the existing technologies mentioned above. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a waterproof and dustproof integrated power metering box shell to address the shortcomings of the prior art. This solves the problems of long-term exposure of key components such as internal terminal blocks and circuit breakers to the air, which can lead to poor contact, overheating, and even fire hazards due to dust accumulation and condensation. Dustproof nets will accumulate dust during long-term use and require regular manual cleaning. In rainy environments, rainwater can directly enter the box during maintenance, causing short circuits and damage to electrical components.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a waterproof and dustproof integrated power metering box housing, comprising a cabinet, with groove components provided on both sides of the cabinet, each groove component having a dust filter embedded therein, cleaning components provided on both sides of the cabinet, two shielding components provided inside the cabinet, two rotating shafts rotatably connected to the open portion of the cabinet, cabinet doors fixedly connected to each of the two rotating shafts, and protective components for protecting cables and electrical components provided inside the cabinet.

[0008] A control box is fixedly connected to the upper surface of the cabinet. A rain shield is provided above the control box. A swing assembly for moving the rain shield on the control box is provided on the upper surface of the control box. A lifting assembly is provided inside the control box, and the lifting assembly is connected to the swing assembly and the rotating shaft via a transmission.

[0009] Preferably, the tank assembly includes a storage tank, a ventilation tank, and a dust removal tank, and the storage tank, ventilation tank, and dust removal tank are connected to each other, with the dust filter embedded in the ventilation tank.

[0010] Preferably, the cleaning assembly includes a first connecting rod, on which a scraper matching the dust filter is fixedly connected, and a silicone block is fixedly connected to one side of the scraper near the cabinet.

[0011] Preferably, the shielding assembly includes a second connecting plate, on which a shielding block matching the dust filter is fixedly connected, and the shielding block and the scraper are located on both sides of the dust filter.

[0012] Preferably, the lifting assembly includes a linkage shaft rotatably connected to the control box and a fixed base installed in the control box. Both the linkage shaft and the rotating shaft are equipped with transmission wheels, and the two transmission wheels are connected in a transmission manner. A worm gear is installed in the middle of the linkage shaft. A drive shaft is rotatably connected to the fixed base. A turntable is fixedly connected to one end of the drive shaft, and a worm wheel is installed at the other end of the drive shaft, and the worm wheel meshes with the worm gear.

[0013] Preferably, the lifting assembly further includes a lifting block and a fixed base fixedly connected to the control box. The bottom end of the lifting block is fixedly connected to a first lifting rod and a second lifting rod. The bottom end of the first lifting rod is fixedly connected to the cleaning assembly, and the bottom end of the second lifting rod is fixedly connected to the shielding assembly. A linkage block is fixedly connected to one side of the lifting block. A sliding groove is provided on the linkage block. A fixing pin is fixedly connected to the turntable, and the fixing pin is slidably connected in the sliding groove.

[0014] Preferably, the swing assembly includes a swing rod fixedly connected to the linkage shaft, and a round pin is fixedly connected to the end of the swing rod away from the linkage shaft. The rain shield has an extrusion groove, and the round pin is slidably connected in the extrusion groove.

[0015] Preferably, a track is fixedly connected to the upper surface of the control box, a guide block is slidably connected inside the track, and the guide block is fixedly connected to the rain shield.

[0016] Preferably, the protective component includes a wire trough seat fixedly connected to the inner wall of the cabinet and a mounting base installed on the wire trough seat by bolts. The wire trough seat has a wire storage cavity and a wire threading port. The mounting base has a communication port, and the wire storage cavity is connected to the communication port through the wire threading port.

[0017] Preferably, a support base is fixedly connected to the mounting base, a rotating block is rotatably connected to the support base, and a protective cover is fixedly connected to the rotating block, with the protective cover covering the communication port.

[0018] The beneficial effects achieved by this invention are as follows: Firstly, the cleaning component automatically rises and falls with the opening and closing of the cabinet door. The silicone blocks on the scraper surface evenly scrape away dust from the filter screen. Combined with the interconnected storage, ventilation, and dust discharge slots within the trough component, the dust removed during cleaning can be directly discharged outside the cabinet, preventing dust accumulation and secondary pollution. No manual cleaning is required, resulting in a high degree of automation. This effectively ensures the long-term permeability of the filter screen, maintaining stable heat dissipation and ventilation within the cabinet, and eliminating safety hazards such as overheating, poor contact, or even fire caused by filter clogging and dust accumulation. Secondly, by separately installing cleaning and shielding components inside and outside the filter screen, the cleaning component can be easily moved when the cabinet door is open for maintenance. The synchronous drive shielding block moves down to completely seal the ventilation slot, blocking external rainwater, fog, and dust from entering the cabinet at the source. This prevents electrical components from getting damp, short-circuiting, or being damaged by dust accumulation during maintenance. In conjunction with the movable rain shield, the open areas of the cabinet can be fully shielded during maintenance, providing double protection and significantly improving the safety of outdoor maintenance in rainy weather. Thirdly, through the combination of the cable tray, cable storage cavity, and rotatable protective cover, the cables, terminals, and electrical components inside the box can be independently sealed and protected, preventing condensation, dust accumulation, and aging caused by long-term exposure to air. This also organizes the wiring layout, eliminates safety hazards caused by messy wiring, and is suitable for long-term outdoor use in complex working conditions, effectively extending the overall service life of the metering box. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is a cross-sectional view from one perspective of the present invention.

[0021] Figure 3 For the present invention Figure 2 An enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 4 For the present invention Figure 2Enlarged schematic diagram of the structure at point B.

[0023] Figure 5 This is a cross-sectional view of the control box in this invention.

[0024] Figure 6 This is a schematic diagram of the swing component in this invention.

[0025] Figure 7 This is a cross-sectional view from another perspective of the present invention.

[0026] Figure 8 For the present invention Figure 7 An enlarged schematic diagram of the structure at point C.

[0027] Figure 9 This is a schematic diagram showing the connection between the rotating shaft and the cabinet door in this invention.

[0028] Reference numerals: 1. Cabinet body; 2. Rotating shaft; 3. Cabinet door; 4. Cleaning assembly; 41. First connecting rod; 42. Scraper; 43. Silicone block; 5. Covering assembly; 51. Second connecting plate; 52. Shielding block; 6. Lifting assembly; 61. Linkage shaft; 62. Transmission wheel; 63. Fixed seat; 64. Drive shaft; 641. Worm gear; 65. Worm part; 66. Turntable; 661. Fixed pin; 67. Linkage block; 671. Slide groove; 68. Lifting block; 691. First lifting rod; 692. Second lifting rod; 7. Swing assembly; 71. Swing rod; 72. Extrusion groove; 73. Round pin shaft; 74. Track; 75. Guide block; 8. Protective assembly; 81. Wire trough seat; 82. Mounting seat; 83. Support seat; 84. Rotating block; 85. Protective cover; 86. Wire storage cavity; 87. Wire threading port; 88. Connecting port; 9. Tank assembly; 91. Storage tank; 92. Ventilation tank; 93. Dust removal tank; 10. Control box; 11. Rain shield; 12. Dust filter screen. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1-9As shown, a waterproof and dustproof integrated power metering box housing includes a cabinet 1. Both sides of the cabinet 1 are provided with groove components 9, and each groove component 9 is embedded with a dust filter 12. Both sides of the cabinet 1 are provided with cleaning components 4. Two shielding components 5 are provided inside the cabinet 1. The open part of the cabinet 1 is rotatably connected to two rotating shafts 2. Each of the two rotating shafts 2 is fixedly connected to a cabinet door 3. The cabinet 1 is provided with protective components 8 for protecting cables and electrical components.

[0031] The cabinet door 3 is equipped with a lock, which can limit the cabinet door 3 when it is closed.

[0032] A control box 10 is fixedly connected to the upper surface of the cabinet 1. A rain shield 11 is provided above the control box 10. A swing assembly 7 for moving the rain shield 11 on the control box 10 is provided on the upper surface of the control box 10. A lifting assembly 6 is provided inside the control box 10, and the lifting assembly 6 is connected to the swing assembly 7 and the rotating shaft 2 in a transmission connection.

[0033] The rain shield 11, cleaning component 4 and shielding component 5 can be driven simultaneously by a single opening and closing action of the cabinet door 3, without the need for additional power source and control switch.

[0034] When the cabinet door 3 is opened, the lifting component 6 causes the swing component 7 to move the control box 10 to the front of the cabinet 1, and the cleaning component 4 and the shielding component 5 move down synchronously to complete the cleaning of the cleaning component 4 and the sealing of the tank component 9.

[0035] like Figure 1 As shown in the figure, in this embodiment, the tank assembly 9 includes a storage tank 91, a ventilation tank 92 and a dust removal tank 93, and the storage tank 91, the ventilation tank 92 and the dust removal tank 93 are connected to each other, and the dust filter 12 is embedded in the ventilation tank 92.

[0036] The three-layer interconnected trough structure can automatically discharge the swept dust outside the cabinet 1 through the dust discharge trough 93, avoiding dust accumulation in the trough and causing secondary pollution. At the same time, the storage trough 91 can accommodate the cleaning component 4 when it is not in operation, without affecting the ventilation effect.

[0037] like Figure 1 As shown in the figure, in this embodiment, the cleaning component 4 includes a first connecting rod 41, a scraper 42 that matches the dust filter 12 is fixedly connected to the first connecting rod 41, and a silicone block 43 is fixedly connected to one side of the scraper 42 near the cabinet 1.

[0038] By using silicone block 43 to contact the dust filter 12, dust on the surface of the dust filter 12 can be effectively scraped off without damaging the mesh structure of the dust filter 12, thus extending the service life of the dust filter 12.

[0039] like Figure 7As shown in the figure, in this embodiment, the shielding component 5 includes a second connecting plate 51, on which a shielding block 52 matching the dust filter 12 is fixedly connected. The shielding block 52 and the scraper 42 are located on both sides of the dust filter 12, respectively.

[0040] The cleaning and shielding structure that operates simultaneously on both the inner and outer sides can completely seal the ventilation slot 92 when the door is opened for maintenance, preventing rainwater and dust from entering the cabinet 1 from the ventilation opening. At the same time, the scraper 42 cleans the dust filter 12 during its descent.

[0041] like Figures 3-5 As shown in the figure, in this embodiment, the lifting assembly 6 includes a linkage shaft 61 rotatably connected to the control box 10 and a fixed seat 63 installed in the control box 10. Both the linkage shaft 61 and the rotating shaft 2 are equipped with transmission wheels 62, and the two transmission wheels 62 are connected in a transmission manner. If the two transmission wheels 62 are belt pulleys, they are driven by belts; if the two transmission wheels 62 are sprockets, they are driven by chains. A worm gear 65 is installed in the middle of the linkage shaft 61. A drive shaft 64 is rotatably connected to the fixed seat 63. One end of the drive shaft 64 is fixedly connected to a turntable 66, and the other end of the drive shaft 64 is equipped with a worm wheel 641, which meshes with the worm gear 65.

[0042] like Figures 3-5 As shown in the figure, in this embodiment, the lifting assembly 6 also includes a lifting block 68 and a fixed base 63 fixedly connected to the control box 10. The bottom end of the lifting block 68 is fixedly connected to a first lifting rod 691 and a second lifting rod 692. The bottom end of the first lifting rod 691 is fixedly connected to the cleaning assembly 4, and the bottom end of the second lifting rod 692 is fixedly connected to the shielding assembly 5. A linkage block 67 is fixedly connected to one side of the lifting block 68. A sliding groove 671 is provided on the linkage block 67. A fixing pin 661 is fixedly connected to the turntable 66, and the fixing pin 661 is slidably connected in the sliding groove 671.

[0043] The rotational motion of the turntable 66 is converted into the linear reciprocating motion of the lifting block 68, which enables the synchronous lifting of the cleaning component 4 and the shielding component 5. The movement is smooth and the stroke is accurate, ensuring that the shielding block 52 can completely cover the dust filter 12.

[0044] The opening and closing of the cabinet door 3 drives the cleaning component 4 to rise and fall automatically. The silicone block 43 on the surface of the scraper 42 evenly scrapes away the dust on the surface of the dust filter 12. In conjunction with the storage slot 91, ventilation slot 92 and dust discharge slot 93 connected inside the slot component 9, the dust that is swept off can be directly discharged outside the cabinet 1, avoiding dust accumulation and secondary pollution. No manual cleaning is required. The high degree of automation effectively ensures that the dust filter 12 is transparent for a long time, maintains the heat dissipation and ventilation effect inside the cabinet 1, and eliminates safety hazards such as equipment overheating, poor contact or even fire caused by dust accumulation due to filter blockage.

[0045] like Figure 2 , Figure 3 and Figure 6 As shown in the figure, in this embodiment, the swing assembly 7 includes a swing rod 71 fixedly connected to the linkage shaft 61, and a round pin 73 fixedly connected to one end of the swing rod 71 away from the linkage shaft 61. The rain shield 11 is provided with an extrusion groove 72, and the round pin 73 is slidably connected in the extrusion groove 72.

[0046] By cooperating with the swing arm 71 and the pressing groove 72, the rotational motion of the linkage shaft 61 can be converted into the horizontal linear motion of the rain shield 11, so that the rain shield 11 automatically extends to the front of the cabinet 1 when the door is opened, to shield the operator from the sun and rain, and improve the maintenance experience.

[0047] like Figure 2 , Figure 3 and Figure 6 As shown in the figure, in this embodiment, a track 74 is fixedly connected to the upper surface of the control box 10, a guide block 75 is slidably connected inside the track 74, and the guide block 75 is fixedly connected to the rain shield 11.

[0048] The cooperative structure of track 74 and guide block 75 strictly limits the movement trajectory of rain shield 11, preventing it from deviating and shaking, and ensuring the smoothness and reliability of the movement of rain shield 11.

[0049] With cleaning components 4 and shielding components 5 installed inside and outside the dust filter 12 respectively, when the cabinet door 3 is opened for maintenance, the shielding block 52 can be driven to move down to completely seal the ventilation slot 92, blocking external rainwater, fog and dust from entering the cabinet 1 from the source, avoiding electrical components from getting damp and short-circuiting or being damaged by dust accumulation during maintenance. In addition, with the forward-moving rain shield 11, the open area of ​​the cabinet 1 can be fully shielded during maintenance, and the double protection greatly improves the safety of maintenance in outdoor rainy weather.

[0050] like Figure 7 and Figure 8 As shown in the figure, in this embodiment, the protective component 8 includes a wire trough seat 81 fixedly connected to the inner wall of the cabinet 1 and a mounting seat 82 installed on the wire trough seat 81 by bolts. The wire trough seat 81 has a wire storage cavity 86 and a wire passage 87. The mounting seat 82 has a communication port 88, and the wire storage cavity 86 is connected to the communication port 88 through the wire passage 87.

[0051] The cable tray 81 can neatly store the internal cables, avoiding the safety hazards caused by messy and tangled cables. At the same time, the cable storage cavity 86 can reserve a certain length of cable, which facilitates the disassembly, assembly and maintenance of electrical components.

[0052] like Figure 7 and Figure 8As shown in the figure, in this embodiment, a support base 83 is fixedly connected to the mounting base 82, a rotating block 84 is rotatably connected to the support base 83, a protective cover 85 is fixedly connected to the rotating block 84, and the protective cover 85 covers the communication port 88.

[0053] Electrical components are installed inside the protective cover 85. Each connection port 88 is equipped with an independent protective cover 85, which can seal the connection port 88 after the cable is threaded to prevent dust and moisture from entering the cable. At the same time, the rotating protective cover 85 is easy to open and close and does not affect the cable threading and maintenance.

[0054] With the cooperation of the cable tray seat 81, the cable storage cavity 86 and the rotatable protective cover 85, the cables, terminals and electrical components inside the box can be independently sealed and protected, avoiding condensation, dust accumulation and aging caused by long-term exposure to air, tidying up the wiring layout, eliminating safety hazards caused by messy wiring, and making it suitable for long-term outdoor complex working conditions, effectively extending the overall service life of the metering box.

[0055] Working principle: When it is necessary to open the cabinet door 3 for maintenance, pull the cabinet door 3 outward. The cabinet door 3 drives the rotating shaft 2 to rotate, and the rotating shaft 2 drives the linkage shaft 61 to rotate synchronously through the transmission wheel 62 and the chain.

[0056] When the linkage shaft 61 rotates, it drives the swing arm 71 to swing forward. The round pin 73 at the end of the swing arm 71 slides in the pressing groove 72, pushing the rain shield 11 forward along the track 74 until the rain shield 11 is fully extended in front of the cabinet 1, shielding the operator from sunlight and rain. On the other hand, the linkage shaft 61 drives the drive shaft 64 and the turntable 66 to rotate through the meshing of the worm gear 65 and the worm wheel 641. The eccentric fixing pin 661 on the turntable 66 slides in the slide groove 671, pushing the linkage block 67 and the lifting block 68 to move downward.

[0057] When the lifting block 68 moves downward, the first lifting rod 691 drives the first connecting rod 41 and the scraper 42 to move downward. The silicone block 43 on the scraper 42 scrapes away the dust on the outer surface of the dust filter 12, and the dust is discharged outside the cabinet 1 through the dust discharge groove 93. At the same time, the second lifting rod 692 drives the second connecting plate 51 and the shielding block 52 to move downward until the shielding block 52 completely covers the inner surface of the dust filter 12, sealing the ventilation groove 92 and preventing rainwater and dust from entering the cabinet 1 during maintenance.

Claims

1. A waterproof and dustproof integrated power metering box housing, comprising a cabinet (1), characterized in that, Both sides of the cabinet (1) are provided with groove components (9), each groove component (9) is inlaid with a dust filter (12), both sides of the cabinet (1) are provided with cleaning components (4), two shielding components (5) are provided inside the cabinet (1), the open part of the cabinet (1) is rotatably connected to two rotating shafts (2), and cabinet doors (3) are fixedly connected to the two rotating shafts (2). The cabinet (1) is provided with protective components (8) for protecting cables and electrical components. A control box (10) is fixedly connected to the upper surface of the cabinet (1). A rain shield (11) is provided above the control box (10). A swing assembly (7) for moving the rain shield (11) on the control box (10) is provided on the upper surface of the control box (10). A lifting assembly (6) is provided inside the control box (10), and the lifting assembly (6) is connected to the swing assembly (7) and the rotating shaft (2) in a transmission connection.

2. The waterproof and dustproof integrated power metering box housing according to claim 1, characterized in that, The tank assembly (9) includes a storage tank (91), a ventilation tank (92) and a dust removal tank (93), and the storage tank (91), the ventilation tank (92) and the dust removal tank (93) are connected to each other, and the dust filter (12) is embedded in the ventilation tank (92).

3. The waterproof and dustproof integrated power metering box housing according to claim 1, characterized in that, The cleaning assembly (4) includes a first connecting rod (41), on which a scraper (42) matching the dust filter (12) is fixedly connected, and a silicone block (43) is fixedly connected to one side of the scraper (42) near the cabinet (1).

4. The waterproof and dustproof integrated power metering box housing according to claim 3, characterized in that, The shielding assembly (5) includes a second connecting plate (51), on which a shielding block (52) matching the dust filter (12) is fixedly connected. The shielding block (52) and the scraper (42) are located on both sides of the dust filter (12).

5. The waterproof and dustproof integrated power metering box housing according to claim 1, characterized in that, The lifting assembly (6) includes a linkage shaft (61) rotatably connected to the control box (10) and a fixed seat (63) installed in the control box (10). Both the linkage shaft (61) and the rotating shaft (2) are equipped with transmission wheels (62), and the two transmission wheels (62) are connected in a transmission manner. A worm gear (65) is installed in the middle of the linkage shaft (61). A drive shaft (64) is rotatably connected to the fixed seat (63). A turntable (66) is fixedly connected to one end of the drive shaft (64), and a worm wheel (641) is installed at the other end of the drive shaft (64), and the worm wheel (641) meshes with the worm gear (65).

6. The waterproof and dustproof integrated power metering box housing according to claim 5, characterized in that, The lifting assembly (6) further includes a lifting block (68). The bottom end of the lifting block (68) is fixedly connected to a first lifting rod (691) and a second lifting rod (692). The bottom end of the first lifting rod (691) is fixedly connected to the cleaning assembly (4), and the bottom end of the second lifting rod (692) is fixedly connected to the shielding assembly (5). A linkage block (67) is fixedly connected to one side of the lifting block (68). A sliding groove (671) is provided on the linkage block (67). A fixing pin (661) is fixedly connected to the turntable (66), and the fixing pin (661) is slidably connected in the sliding groove (671).

7. The waterproof and dustproof integrated power metering box housing according to claim 6, characterized in that, The swing assembly (7) includes a swing rod (71) fixedly connected to the linkage shaft (61). A round pin (73) is fixedly connected to one end of the swing rod (71) away from the linkage shaft (61). An extrusion groove (72) is provided on the rain shield (11), and the round pin (73) is slidably connected in the extrusion groove (72).

8. The waterproof and dustproof integrated power metering box housing according to claim 7, characterized in that, The upper surface of the control box (10) is fixedly connected to a track (74), and a guide block (75) is slidably connected inside the track (74), and the guide block (75) is fixedly connected to the rain shield (11).

9. The waterproof and dustproof integrated power metering box housing according to claim 1, characterized in that, The protective component (8) includes a wire trough seat (81) fixedly connected to the inner wall of the cabinet (1) and a mounting seat (82) installed on the wire trough seat (81) by bolts. The wire trough seat (81) has a wire storage cavity (86) and a wire passage (87) inside. The mounting seat (82) has a communication port (88), and the wire storage cavity (86) is connected to the communication port (88) through the wire passage (87).

10. The waterproof and dustproof integrated power metering box housing according to claim 9, characterized in that, A support base (83) is fixedly connected to the mounting base (82), a rotating block (84) is rotatably connected to the support base (83), a protective cover (85) is fixedly connected to the rotating block (84), and the protective cover (85) covers the communication port (88).

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