A lightning protection combiner box structure

Abstract

The invention discloses a lightning protection type junction box structure, which belongs to the technical field of photovoltaic junction boxes; the junction box structure comprises a box body, in which a lightning protection component is installed; the box body is connected to a lightning rod; a mounting tube is connected to the side of the box body, and teeth are arranged in the mounting tube; a screw is rotatably connected to the box body, and the screw is connected to a connecting rod; the connecting rod is hinged to the lightning rod, and when the connecting rod moves to the inside of the mounting tube, the lightning rod is driven from a horizontal state to a vertical state through gear driving; a lightning receptor is connected to the top surface of the lightning rod, and the lightning receptor is detachably connected to the lightning rod through a guide rod, a spring, etc., a roller is rotatably connected to the bottom of the guide rod, and special-shaped grooves are provided on both sides of the inner wall of the lightning rod, and the roller is placed in the special-shaped groove; the roller is clamped by the special-shaped groove; the invention solves the problem that the telescopic lightning rod structure of the lightning protection type junction box is easy to get water in, which affects the normal operation of the internal circuit structure.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic combiner boxes and relates to a lightning protection combiner box structure. Background Art

[0002] In solar photovoltaic power generation systems, in order to reduce the number of connections between solar photovoltaic cell arrays and inverters, a combiner box is usually used; users can connect a certain number of photovoltaic cells of the same specifications in series to form multiple photovoltaic arrays; then, these photovoltaic arrays can be connected in parallel to the lightning protection photovoltaic combiner box; in the combiner box, after the photovoltaic current is merged, it is built through components such as the controller, DC distribution cabinet, photovoltaic inverter and AC distribution cabinet to build a complete photovoltaic power generation system, thereby achieving grid connection with the mains.

[0003] The existing lightning protection combiner box is generally composed of positive and negative DC fuses, surge protectors, grounding connectors and DC arc extinguishing switches. When lightning strikes, the current is conducted underground through the surge protector and grounding connector, and then the positive and negative DC fuses are quickly blown to cut off the current, preventing fire and equipment damage; and the DC arc extinguishing switch can respond quickly to cut off the current, thereby avoiding fire; however, when the combiner box is installed in a certain position for a long time, its dust and water vapor will cause a short circuit in the internal device, especially affecting the lightning rod set outside. The existing lightning protection combiner box also has a telescopic structure designed for the lightning rod; when a thunderstorm is expected, the lightning rod is extended; when there is no risk of lightning, the lightning rod is retracted into the box. However, this telescopic structure is often set at the top of the box. Due to poor sealing or to facilitate the extension of the lightning rod, rainwater often leaks into the box from the telescopic structure, affecting the internal circuit structure; therefore, it is necessary to improve and deal with the above problems. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and provides a lightning protection type combiner box structure; it solves the problem that the telescopic lightning rod structure of the lightning protection type combiner box is easily infiltrated with water, thus affecting the normal operation of the internal circuit structure.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions.

[0006] A lightning protection type junction box structure, comprising a box body, wherein a lightning protection component is installed in the box body; a lightning rod is connected to the box body; a mounting tube is connected to the side of the box body, a baffle cover is movably hinged on one side of the mounting tube, the baffle cover is located outside the box body, and a torsion spring is provided at the connection between the baffle cover and the mounting tube; equidistant teeth are provided in the mounting tube;

[0007] A screw rod is connected to the box body for horizontal rotation, and the screw rod is threadedly connected to a connecting rod; the connecting rod is movably hinged to the bottom of the lightning rod, and the connecting rod is rotatably connected to a driving gear; the lightning rod is fixedly connected to a driven gear, and the driven gear is meshed with the driving gear for transmission; when the connecting rod moves to the inside of the installation tube, the driving gear is meshed with the teeth for transmission, so that the driven gear rotates, thereby driving the lightning rod from a horizontal state to a vertical state;

[0008] A mounting groove is provided on the top surface of the lightning rod, a lightning receptor is provided in the mounting groove, mounting cavities are provided on both sides of the lightning receptor, a guide rod is vertically penetrated in the mounting cavity, a baffle is fixedly connected to the upper end of the guide rod, the baffle is placed in the mounting cavity, and a baffle ring is fixedly connected to the guide rod, a spring is vertically provided between the baffle ring and the lightning receptor, a roller is rotatably connected to the bottom of the guide rod, special-shaped grooves are provided on both sides of the inner wall of the lightning rod, and the rollers are placed in the special-shaped grooves; the rollers are clamped in the special-shaped grooves.

[0009] Furthermore, one end of the screw is rotatably connected to the inner wall of the box, and the other end of the screw is connected to the output shaft of the stepper motor, and the stepper motor is installed on the inner wall of the box.

[0010] Furthermore, a guide opening is opened on the bottom surface of the box body, and a one-piece clamping claw is arranged in the guide opening, and a locking nut is threadedly connected to the upper end of the one-piece clamping claw, and the bottom surface of the locking nut abuts against the bottom surface of the box body; a washer is arranged inside the lower end of the one-piece clamping claw, and a clamping head is arranged at the lower end of the one-piece clamping claw, and the clamping head is threadedly connected to the one-piece clamping claw; the wire connected to the bottom of the lightning protection component passes through the one-piece clamping claw and locks the one-piece clamping claw through the clamping head.

[0011] Furthermore, an air duct is provided on the bottom surface of the box body, a waterproof breathable valve is installed in the air duct, a plurality of equidistant air duct holes are provided on the outer side of the lower end of the waterproof breathable valve, a waterproof breathable membrane is installed inside the waterproof breathable valve, a fan is installed on the inner bottom surface of the box body, and the fan is located at the upper end of the waterproof breathable valve.

[0012] Furthermore, positioning plates are provided in the middle of both sides of the inner wall of the box, a plurality of equidistant positioning openings are opened on the top surface of the positioning plates, and connecting plates are laterally provided at the upper and lower ends of the two positioning plates. The two sides of the connecting plates are connected to the corresponding positioning openings on the positioning plates on both sides by bolts, and the front ends of the two connecting plates are fixedly connected with mounting plates, and the lightning protection assembly is connected to the mounting plates.

[0013] Furthermore, the lightning protection assembly includes a grounding connector, a positive DC fuse, a surge protector, a negative DC fuse and a DC arc-extinguishing switch; the grounding connector, the positive DC fuse, the surge protector, the negative DC fuse and the DC arc-extinguishing switch are sequentially connected to the front end surface of the mounting plate through bolts; the top surface of the grounding connector is connected to the surge protector through the upper wire, and the lower end of the grounding connector is connected to the lower wire, the lower wire passes through the one-piece clamping claw, and the positive DC fuse and the negative DC fuse are respectively connected to the DC arc-extinguishing switch through wires.

[0014] Furthermore, the front end face of the box is sealed and connected to a shell; a box door is hinged on the front side of the shell, and an installation opening is opened on the rear end face of the shell; a part of the front end of the positive DC fuse, surge protector, negative DC fuse and DC arc extinguishing switch is exposed from the installation opening opened at the rear end of the shell.

[0015] Furthermore, a sealing groove is provided on the front end face of the box body, and a sealing frame is connected to the rear end face of the shell body; the sealing frame is placed in the sealing groove, and positioning blocks are installed on both sides of the inner wall of the box body, and an internal thread groove is provided on the front end face of the positioning block. The shell body is connected to the positioning block by bolts so that the rear end face of the shell body abuts against the front end face of the box body.

[0016] Furthermore, fixing seats are installed at the four ends of the rear side of the box.

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

[0018] 1. The present invention facilitates the conduction of lightning current into the ground through the cooperation of the surge protector and the grounding connector, thereby avoiding fire in the device; through the cooperation of the positive DC fuse, the negative DC fuse and the DC arc extinguishing switch, the fuse can be quickly blown when the current is too high, thereby cutting off the current and avoiding fire.

[0019] 2. The present invention facilitates waterproof sealing when external wires are connected through the cooperation of the one-piece clamping claw and the clamping head; and prevents dust and water from entering through the cooperation of the waterproof breathable valve and the sealing frame, thereby avoiding short circuit of the device and extending the service life of the device.

[0020] 3. The present invention facilitates the control of the lightning rod from a horizontal state to a vertical state through the cooperation of the driving gear and the teeth, thereby facilitating the storage of the lightning rod; such a telescopic structure is opened on the side of the box body to avoid the problem of water inflow from the top, and at the same time, through the cooperation of the connecting rod and the screw, it is convenient to quickly unfold the lightning rod, thereby improving the lightning protection effect of the device.

[0021] 4. The present invention facilitates the rapid replacement of lightning rods through the cooperation of the roller block and the special-shaped groove. Moreover, when the lightning rod connected to the outer end of the lightning rod moving outward is in a horizontal state, there is a buffer distance between the lightning rod and the lightning rod, and the roller block will not reach the bottom of the special-shaped groove, thereby avoiding a rigid collision between the lightning rod and the blocking cover, thereby improving the use effect of the lightning rod; the device increases the service life of the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall side cross-sectional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal three-dimensional structure of the housing of the present invention;

[0025] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the box body of the present invention;

[0026] Figure 5 It is a schematic diagram of the front cross-sectional structure of the box body of the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the one-piece clamping claw of the present invention;

[0028] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the waterproof breathable valve of the present invention;

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the lightning receptor of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the lightning rod of the present invention;

[0031] Fig.10 For the present invention Figure 2 A schematic diagram of the enlarged structure of the middle A part;

[0032] Fig.11 For the present invention Figure 4 A schematic diagram of the structure of the middle B part;

[0033] Fig.12 For the present invention Figure 5 A magnified schematic diagram of the structure of the middle C part;

[0034] Serial numbers in the figure: 1, box body; 2, fixing seat; 3, shell; 4, box door; 5, sealing frame; 6, sealing groove; 7, positioning block; 8, one-piece clamping claw; 9, locking nut; 10, washer; 11, clamping head; 12, waterproof breathable valve; 13, air guide hole; 14, waterproof breathable membrane; 15, positioning plate; 16, connecting plate; 17, mounting plate; 18, grounding connector; 19, positive DC fuse ; 20. Surge protector; 21. Negative DC fuse; 22. DC arc extinguishing switch; 23. Fan; 24. Mounting tube; 25. Cover; 26. Torsion spring; 27. Teeth; 28. Connecting rod; 29. ​​Lightning rod; 30. Driving gear; 31. Driven gear; 32. Screw; 33. Stepping motor; 34. Lightning arrester; 35. Guide rod; 36. Spring; 37. Roller; 38. Special-shaped groove. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0036] See also Figures 1 to 12 This embodiment proposes a lightning protection type junction box structure, including a box body 1 and a shell 3. The box body 1 is fixed with a fixing seat 2 at the four corners of the rear side, and the box body 1 is fixed by the fixing seat 2; the front end face of the box body 1 is connected to the rear end face of the shell 3 through a sealing frame 5; specifically, a sealing groove 6 is provided on the front end face of the box body 1, and the sealing frame 5 is placed in the sealing groove 6, and positioning blocks 7 are installed on both sides of the inner wall of the box body 1, and the front end face of the positioning block 7 is provided with an internal thread groove, and the shell 3 is connected to the positioning block 7 by bolts, so that the rear end face of the shell 3 is abutted against the front end face of the box body 1. A box door 4 is provided on the front side of the shell 3, and one side of the box door 4 is movably hinged with the shell 3; the rear end face of the shell 3 is provided with a mounting opening.

[0037] A plurality of equidistant guide openings are provided in the middle of the bottom surface of the box body 1, and a one-piece clamping claw 8 is provided in the guide opening, and a locking nut 9 is threadedly connected to the upper end of the one-piece clamping claw 8, and the bottom surface of the locking nut 9 abuts against the bottom surface of the box body 1; the one-piece clamping claw 8 is fixed by the locking nut 9; a washer 10 is provided inside the lower end of the one-piece clamping claw 8, and the washer 10 abuts against the wire, thereby achieving a sealing and waterproofing effect; a clamping head 11 is provided at the lower end of the one-piece clamping claw 8, and the clamping head 11 is threadedly connected to the one-piece clamping claw 8, and the one-piece clamping claw 8 is locked by the clamping head 11. Air guide ports are provided on both sides of the rear end of the bottom surface of the box body 1, and a waterproof breathable valve 12 is installed in the air guide port. A plurality of equidistant air guide holes 13 are provided on the outer side of the lower end of the waterproof breathable valve 12, and air is guided through the air guide holes 13; a waterproof breathable membrane 14 is installed inside the waterproof breathable valve 12, and the box body 1 is made waterproof and breathable through the waterproof breathable valve 12. Fans 23 are installed on both sides of the bottom surface of the box body 1, and the fans 23 are located at the upper end of the waterproof breathable valve 12; the fans 23 are used to facilitate air circulation.

[0038] A positioning plate 15 is provided in the middle of both sides of the inner wall of the box body 1, and a plurality of equidistant positioning holes are opened on the top surface of the positioning plate 15, and a connecting plate 16 is horizontally provided between the upper and lower ends of the two positioning plates 15, and the two sides of the connecting plate 16 are connected to the corresponding positioning holes on the positioning plates 15 on both sides by bolts, and the front ends of the two connecting plates 16 are fixedly connected with a mounting plate 17, and the upper and lower ends of the mounting plate 17 are opened with mounting grooves, and the mounting plate 17 is connected to the lightning protection component; the front and rear positions of the connecting plates 16 can be adjusted through the plurality of equidistant positioning holes, thereby adjusting the position of the lightning protection component in the box body 1.

[0039] The lightning protection assembly includes a grounding connector 18, a positive DC fuse 19, a surge protector 20, a negative DC fuse 21 and a DC arc-extinguishing switch 22; the grounding connector 18, the positive DC fuse 19, the surge protector 20, the negative DC fuse 21 and the DC arc-extinguishing switch 22 are sequentially connected to the front end surface of the mounting plate 17 by bolts; the top surface of the grounding connector 18 is connected to the surge protector 20 through the upper wire, and the lower end of the grounding connector 18 is connected to the lower wire, the lower wire passes through the one-piece clamping claw 8, and the positive DC fuse 19 and the negative DC fuse 21 are respectively connected to the DC arc-extinguishing switch 22 through wires.

[0040] A mounting tube 24 is fixedly connected to the mounting opening at the upper end of the side of the box body 1, and a baffle 25 is movably hinged on one side of the mounting tube 24. The baffle 25 is located outside the box body 1, and the mounting tube 24 is sealed by the baffle 25; a torsion spring 26 is provided at the connection between the baffle 25 and the mounting tube 24; one end of the torsion spring 26 is connected to the baffle 25, and the other end of the torsion spring 26 is connected to the mounting tube 24; a plurality of equidistant teeth 27 are fixedly connected to the inner bottom surface of the mounting tube 24, and a connecting rod 28 is provided inside the mounting tube 24, one end of the connecting rod 28 is movably hinged to the bottom end of the lightning rod 29, and the connecting rod 28 is rotatably connected to a driving gear 30, which drives the driving gear 30. The driven gear 30 meshes with the teeth 27 for transmission; a driven gear 31 is provided on one side of the driving gear 30, and the driven gear 31 meshes with the driving gear 30 for transmission, the driven gear 31 is fixedly connected to the lightning rod 29, and a connecting block is fixedly connected to the other end of the connecting rod 28; the connecting block is placed inside the box body 1, and a screw 32 is horizontally provided at the upper end of the inside of the box body 1, the connecting block is threadedly connected to the screw 32, one end of the screw 32 is rotatably connected to the inner wall of the box body 1, and the other end of the screw 32 is connected to the output shaft of the stepper motor 33, and the stepper motor 33 is installed on the inner wall of the box body 1; the rotation of the screw 32 is controlled by the stepper motor 33. Initially, the connecting rod 28 is located at the leftmost end of the screw rod 32, and the lightning rod 29 is horizontally located in the box body 1; when thunderstorm occurs, the stepper motor 33 is controlled to start through the cloud monitoring platform, and then the screw rod 32 is rotated by the stepper motor 33, thereby controlling the connecting rod 28 to move to the right, and then controlling the lightning rod 29 to move horizontally out to the outside of the box body 1. When the lightning rod 29 moves outward, the blocking cover 25 is pushed, and the torsion spring 26 is in a compressed state at this time. When one end of the connecting rod 28 moves to the inside of the mounting tube 24, the driving gear 30 abuts against the teeth 27. With the movement of the connecting rod 28, the driving gear 30 is controlled to rotate, and the driving gear 30 is meshed with the driven gear 31 for transmission, thereby controlling the driven gear 31 to rotate, and then controlling the lightning rod 29 to change from a horizontal state to a vertical state; when the lightning rod 29 is not needed, the stepper motor 33 is controlled to rotate in the opposite direction, thereby controlling the lightning rod 29 to retract, and the blocking cover 25 is closed by the torsion spring 26. Such a telescopic structure is provided on the side of the box body 1, thereby avoiding the problem of water ingress to the top of the telescopic lightning rod of the existing junction box. At the same time, through the cooperation of the connecting rod 28 and the rotating screw 32, the lightning rod 29 can be quickly extended, thereby improving the lightning protection effect of the device.

[0041] A lightning rod 34 is arranged in the installation groove provided on the top surface of the lightning rod 29, and the junction box is prevented from being connected to electricity by the lightning rod 34; installation cavities are provided on both sides of the lightning rod 34, and a guide rod 35 is vertically penetrated in the installation cavity, a baffle is fixedly connected to the upper end of the guide rod 35, the baffle is placed in the installation cavity, and a baffle ring is fixedly connected to the lower end of the guide rod 35, and a spring 36 is vertically arranged between the baffle ring and the lightning rod 34, one end of the spring 36 is connected to the lightning rod 34, and the other end of the spring 36 is connected to the baffle ring, and the guide rod 35 is easily pulled by the spring 36; a roller 37 is provided below the baffle ring, and the roller 37 is rotatably connected to the bottom of the guide rod 35, and special-shaped grooves 38 are provided on both sides of the inner wall of the top of the lightning rod 29, and the roller 37 is placed in the special-shaped grooves 38; the roller 37 is clamped by the special-shaped grooves 38.

[0042] Working principle of a lightning protection combiner box structure:

[0043] First, install the fixing base 2 on both sides of the box body 1 at a certain position by bolts, and then install the two sides of the connecting plate 16 on the positioning plate 15 by bolts, and then fix the grounding connector 18, positive DC fuse 19, surge protector 20, negative DC fuse 21 and DC arc extinguishing switch 22 on the mounting plate 17 in sequence, and connect the lightning protection components to each other with wires, and then insert the upper end of the one-piece clamping claw 8 into the guide port opened on the bottom surface of the box body 1, and then thread the upper end of the one-piece clamping claw 8 to the locking nut 9, and then insert the wire from the lower end of the one-piece clamping claw 8 to connect with the grounding connector 18. When the wire is connected, rotate the clamping head 11 to squeeze the lower end of the one-piece clamping claw 8, and then squeeze the gasket 10, so that the gasket 10 abuts against the wire, thereby achieving sealing and waterproofing.

[0044] After the lightning protection component is installed, the waterproof breathable valve 12 is installed in the air guide port opened at the rear end of the bottom surface of the box body 1, and then fans 23 are installed on both sides of the inside of the box body 1, respectively placed directly above the waterproof breathable valves 12 on both sides; then the shell 3 is installed on the positioning block 7 by bolts, and at this time, the sealing frame 5 is placed in the sealing groove 6 opened at the front end of the box body 1, and a part of the front end of the positive DC fuse 19, the surge protector 20, the negative DC fuse 21 and the DC arc extinguishing switch 22 are exposed from the installation port opened at the rear end of the shell body 3, and then one side of the box door 4 is installed on the shell body 3.

[0045] After the device is installed, start the device. When the device works for a long time and its internal temperature is too high, start the fan 23, and control the air intake and air outlet of the fans 23 on both sides respectively, so as to achieve the effect of lowering the internal temperature of the device, thereby increasing the use time of the device. When lightning strikes the box 1, the current is introduced into the grounding connector 18 through the surge protector 20, and the current is introduced into the ground through the grounding connector 18. When a short circuit occurs in the device, the current will increase instantly, and the positive DC fuse 19 and the negative DC fuse 21 can be quickly blown. At this time, the DC arc extinguishing switch 22 can respond quickly, cut off the current, and avoid damage to the device.

[0046] When the surge protector 20 and the positive DC fuse 19 and the negative DC fuse 21 are triggered, the lightning protection module inside the surge protector 20 needs to be replaced, the fuses inside the positive DC fuse 19 and the negative DC fuse 21 need to be replaced, and the DC arc extinguishing switch 22 needs to be opened to keep the device working normally, so as to protect against the next lightning strike.

[0047] When thunderstorm occurs, the stepper motor 33 is started by controlling the cloud monitoring platform, and then the screw 32 is rotated by the stepper motor 33. Initially, the connecting rod 28 is located at the leftmost end of the rotating screw 32, and the lightning rod 29 is horizontally located in the box body 1; it is threadedly connected to the screw 32 through the connecting block, and then connected to the connecting rod 28 through the connecting block. When the screw 32 rotates, the connecting rod 28 is controlled to move right, and then the lightning rod 29 is controlled to move out of the box body 1. When the lightning rod 29 moves outward, the blocking cover 25 is pushed. At this time, the torsion spring 26 is in a compressed state. When one end of the connecting rod 28 moves To the inside of the mounting tube 24, at this time, the driving gear 30 is in contact with the teeth 27, and with the movement of the connecting rod 28, the driving gear 30 is controlled to rotate, and the driving gear 30 is meshed with the driven gear 31 to control the rotation of the driven gear 31, thereby controlling the lightning rod 29 to change from a horizontal state to a vertical state; when lightning strikes, the current is introduced into the ground through the grounding wire through the lightning rod 29, thereby avoiding damage to the components in the box 1; when the lightning rod 29 is not needed, the stepper motor 33 is controlled to rotate in the opposite direction, thereby controlling the lightning rod 29 to retract, and the cover 25 is closed by the torsion spring 26.

[0048] When it is necessary to replace the lightning rod 34 inside the lightning rod 29, it is only necessary to rotate the upper end of the lightning rod 34 counterclockwise. At this time, the roller 37 will slide out along the special-shaped groove 38, and the spring 36 will be in a compressed state. The old lightning rod 34 can be taken out, and then the new lightning rod 34 can be installed and rotated clockwise to install the new lightning rod 34.

[0049] During the horizontal outward movement of the lightning rod 29, since the lightning receptor 34 connected to the top of the lightning rod 29 is in a horizontal state, there is a buffer distance between the lightning receptor 34 and the lightning rod 29, and the roller 37 will not reach the bottom of the special-shaped groove 38. Therefore, when the connector 34 abuts against the baffle 25, the spring 36 and the guide rod 35 in the horizontal state will play a lateral buffering role on the lightning receptor 34, avoiding a rigid collision between the lightning receptor 34 and the baffle 25, thereby pushing the baffle 25 open through the lightning receptor 34. During the process of opening the baffle 25, the lightning receptor 24 will not be affected.

[0050] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A lightning protection combiner box structure, comprising a box body (1), wherein a lightning protection component is installed in the box body (1); the box body (1) is connected to a lightning rod (29); It is characterized in that A mounting tube (24) is connected to the side of the box body (1), a blocking cover (25) is movably hinged on one side of the mounting tube (24), the blocking cover (25) is located outside the box body (1), and a torsion spring (26) is provided at the connection between the blocking cover (25) and the mounting tube (24); and teeth (27) with equal spacing are provided inside the mounting tube (24); A screw rod (32) is rotatably connected in the box body (1), and the screw rod (32) is threadedly connected to a connecting rod (28); the connecting rod (28) is movably hinged to the bottom of the lightning rod (29), and the connecting rod (28) is rotatably connected to a driving gear (30); the lightning rod (29) is fixedly connected to a driven gear (31), and the driven gear (31) and the driving gear (30) are meshed for transmission; when the connecting rod (28) moves to the inside of the mounting tube (24), the driving gear (30) and the teeth (27) are meshed for transmission, so that the driven gear (31) rotates, thereby driving the lightning rod (29) to change from a horizontal state to a vertical state; The top surface of the lightning rod (29) is provided with an installation groove, a lightning receptor (34) is provided in the installation groove, installation cavities are provided on both sides of the lightning receptor (34), a guide rod (35) vertically penetrates the installation cavity, a baffle is fixedly connected to the upper end of the guide rod (35), the baffle is placed in the installation cavity, and a baffle ring is fixedly connected to the guide rod (35), a spring (36) is vertically provided between the baffle ring and the lightning receptor (34), a roller (37) is rotatably connected to the bottom of the guide rod (35), special-shaped grooves (38) are provided on both sides of the inner wall of the lightning rod (29), and the roller (37) is placed in the special-shaped groove (38); the roller (37) is clamped through the special-shaped groove (38); The bottom surface of the box body (1) is provided with a guide opening, and a one-piece clamping claw (8) is provided in the guide opening, and a locking nut (9) is threadedly connected to the upper end of the one-piece clamping claw (8), and the bottom surface of the locking nut (9) abuts against the bottom surface of the box body (1); a washer (10) is provided inside the lower end of the one-piece clamping claw (8), and a clamping head (11) is provided at the lower end of the one-piece clamping claw (8), and the clamping head (11) is threadedly connected to the one-piece clamping claw (8); the wire connected to the bottom of the lightning protection component passes through the one-piece clamping claw (8) and is locked by the clamping head (11); Positioning plates (15) are provided at the middle of both sides of the inner wall of the box body (1), and a plurality of equally spaced positioning openings are provided on the top surface of the positioning plates (15), and a connecting plate (16) is transversely provided between the upper and lower ends of the two positioning plates (15), and both sides of the connecting plate (16) are connected to the corresponding positioning openings on the positioning plates (15) on both sides by bolts, and the front ends of the two connecting plates (16) are fixedly connected to mounting plates (17), and the lightning protection assembly is connected to the mounting plates (17); The lightning protection assembly comprises a grounding connector (18), a positive DC fuse (19), a surge protector (20), a negative DC fuse (21) and a DC arc extinguishing switch (22); the grounding connector (18), the positive DC fuse (19), the surge protector (20), the negative DC fuse (21) and the DC arc extinguishing switch (22) are sequentially connected to the front end surface of the mounting plate (17) by bolts; the top surface of the grounding connector (18) is connected to the surge protector (20) by an upper wire, and the lower end of the grounding connector (18) is connected to the lower wire, the lower wire passes through the one-piece clamping claw (8), and the positive DC fuse (19) and the negative DC fuse (21) are respectively connected to the DC arc extinguishing switch (22) by wires.

2. A lightning protection combiner box structure according to claim 1, It is characterized in that One end of the screw rod (32) is rotatably connected to the inner wall of the box body (1), and the other end of the screw rod (32) is connected to the output shaft of the stepper motor (33), and the stepper motor (33) is mounted on the inner wall of the box body (1).

3. A lightning protection combiner box structure according to claim 1, It is characterized in that The bottom surface of the box body (1) is provided with an air guide port, a waterproof breathable valve (12) is installed in the air guide port, a plurality of equidistant air guide holes (13) are provided on the outer side of the lower end of the waterproof breathable valve (12), a waterproof breathable membrane (14) is installed inside the waterproof breathable valve (12), and a fan (23) is installed on the inner bottom surface of the box body (1), and the fan (23) is located at the upper end of the waterproof breathable valve (12).

4. A lightning protection combiner box structure according to claim 1, It is characterized in that The front end face of the box body (1) is sealedly connected to a housing (3); a box door (4) is hingedly connected to the front side of the housing (3); a mounting opening is provided on the rear end face of the housing (3); a front end portion of the positive DC fuse (19), the surge protector (20), the negative DC fuse (21) and the DC arc extinguishing switch (22) is exposed from the mounting opening provided at the rear end of the housing (3).

5. A lightning protection combiner box structure according to claim 4, It is characterized in that The front end surface of the box body (1) is provided with a sealing groove (6), and the rear end surface of the shell body (3) is connected to a sealing frame (5); the sealing frame (5) is placed in the sealing groove (6), and positioning blocks (7) are installed on both sides of the inner wall of the box body (1), and the front end surface of the positioning blocks (7) is provided with an internal thread groove, and the shell body (3) is connected to the positioning blocks (7) by bolts, so that the rear end surface of the shell body (3) abuts against the front end surface of the box body (1).

6. A lightning protection combiner box structure according to claim 1, It is characterized in that The four rear corners of the box body (1) are all equipped with fixing seats (2).

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