A solar photovoltaic cable installation device

Abstract

The present invention belongs to the technical field of photovoltaic junction boxes, and discloses a solar photovoltaic cable installation device, including a shell and a top cover, wherein a first rotating shaft is rotatably installed inside the top cover. In the present invention, when installing the cable, the terminal part of the cable is stuck in the installation groove and the fixed card and the handle is turned, and the terminal in the sliding block is finally stuck in the elastic sleeve to prevent the staff from operating with power on during wiring; secondly, as the handle is turned, the top of the pressing block on the third rotating shaft abuts against the top surface of the fastening clamp to prevent it from being separated from the elastic clip and the wire clamp seat, causing virtual connection and missing connection, and avoiding live connection of photovoltaic panels; finally, when the temperature of the cable and other components in the shell rises, the fire-fighting liquid in the fire-fighting box is sprayed out, and the fire-fighting liquid is vaporized by heat, squeezing out the air in the shell, thereby avoiding fire, and while the air is squeezed out, it takes away the heat of the cable and other components to cool them down.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic junction boxes, and in particular relates to a solar photovoltaic cable installation device. Background Art

[0002] As a clean energy, solar photovoltaic is vigorously developed by various countries. As a cable connection installer for connecting multiple photovoltaic panels in series, photovoltaic junction boxes are widely used. They are roughly composed of cables, connectors, casings and busbars. The busbars are responsible for connecting the cables and the cables of the photovoltaic panels, while the connectors are responsible for connecting multiple photovoltaic junction boxes in series.

[0003] When connecting the existing photovoltaic junction box to the lead-out terminal of the photovoltaic panel, an electric soldering iron is usually used to melt the tin wire and weld the photovoltaic lead-out terminal to the terminal of the photovoltaic junction box. However, in the actual installation and layout process, when the photovoltaic junction box is installed on the photovoltaic panel installed on the photovoltaic rack, the photovoltaic panel is in a working state. Welding at this time is live welding, which is easy to generate electric arcs and endanger the health of the workers. When the gloves of the workers are damaged, even if they are exposed to current within the safe voltage range, they will still cause muscle spasms, causing the workers to have cold welds during the welding process, causing the above-mentioned problems; and during use, when the interior of the photovoltaic junction box is damaged, the replacement of the photovoltaic junction box is very cumbersome, and the photovoltaic panel lead-out terminal is cleaned out and welded in the new photovoltaic junction box, and it is also easy to cause cold welds and empty welds due to operational errors during welding, resulting in increased internal resistance of the related lines, increased heat, and reduced service life of the photovoltaic panel. Summary of the invention

[0004] The object of the present invention is to provide a solar photovoltaic cable installation device to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a solar photovoltaic cable installation device comprises an outer shell and a top cover, symmetrical threading holes are provided on both sides of the outer shell, a first rotating shaft is rotatably installed inside the top cover, one end of the first rotating shaft extending out of the top surface of the top cover is fixedly connected to a handle, a push block is fixedly sleeved on the first rotating shaft, a plurality of threading grooves are provided on the inner bottom surface of the outer shell, two mirror-arranged wiring seats and connecting seats are fixedly connected to the inner bottom surface of the outer shell, a wire clamp seat is fixedly connected to the inner bottom surface of the outer shell, a plurality of fastening clips are hinged on the side of the wire clamp seat, a second rotating shaft and a third rotating shaft with axes perpendicular to each other are rotatably installed on the inner side surface of the top cover, the sides at both ends of the third rotating shaft are fixedly sleeved with symmetrically arranged first gears, the first rotating shaft, the second rotating shaft and the third rotating shaft are fixedly sleeved with transmission bevel gears, and the first rotating shaft, the second rotating shaft and the third rotating shaft are transmission-connected by mutually meshing transmission bevel gears, and a symmetrical pressing block is fixedly sleeved on the third rotating shaft.

[0006] Preferably, the left and right inner sides of the shell are provided with limit sliding grooves and are slidably connected to a sliding frame, a rack is fixedly connected to the interior of the sliding frame, and the left and right inner sides of the shell are rotatably mounted with symmetrical second gears, the second gear is located above the rack and meshes with the rack, a locking rod is fixedly sleeved on the top surface of the sliding frame, the left and right inner sides of the shell are fixedly connected with a first locking block, the front section of the locking rod is slidably sleeved inside a first locking block, the inner side surface of the top cover is fixedly connected with a second locking block, and when the top cover covers the opening of the shell, the second locking block is located between the two first locking blocks.

[0007] Preferably, a fire extinguisher box is fixedly connected to the inner side surface of the shell, and the fire extinguisher box is located between the two threading holes. A sliding rod is fixedly connected between the left and right inner sides of the shell, and symmetrical sliding blocks are slidably sleeved on the sliding rod. Multi-stage telescopic rods are fixedly connected to both sides of the fire extinguisher box, and the protruding ends of the multi-stage telescopic rods are fixedly connected to the sides of the sliding block. A first spring sleeved on the sliding rod is elastically connected between one side of the sliding block and the inner side surface of the shell.

[0008] Preferably, a mounting groove is provided on the top surface of the sliding block, and a plurality of fixing cards are fixedly connected to the top surface of the sliding block. The mounting groove is concentric with the center of the fixing card, a limiting groove is provided on the top surface of the sliding block, and a symmetrical limiting fixing rod is fixedly connected to the inner bottom surface of the shell.

[0009] Preferably, the limiting fixing rod is in an "L" shape, and after the sliding block abuts against one side of the limiting fixing rod, the protruding end of the limiting fixing rod is clamped in the limiting groove.

[0010] Preferably, a diode is fixedly connected between the wiring seat and the connecting seat, a notch is provided on the connecting seat, a guide notch is provided on the side of the wiring seat facing the center of the shell, an elastic sleeve is fixedly connected in the guide notch, and the elastic sleeve has a notch.

[0011] Preferably, a one-way air valve is fixedly connected to the outer top surface of the shell, and the one-way air valve blocks external air from entering the shell. The inner side surface of the top cover is fixedly connected to a sealing rubber ring, and when the top cover covers the opening of the shell, the sealing rubber ring prevents external air from entering the shell.

[0012] Preferably, a sliding plate is slidably connected to one side of the fire fighting box facing the first rotating shaft, and the sliding plate is pushed into the fire fighting box by the pushing block after contacting the pushing block, and the interior of the fire fighting box is filled with fire fighting liquid.

[0013] Preferably, the inner bottom surface of the shell is fixedly connected to a limit seat, the limit seat has a notch on one side facing the fire box, and one end of the first rotating shaft is located in the limit seat when the top cover is in a closed state.

[0014] Preferably, a plurality of parallel clamping grooves are provided on the inner top surface of the wire clamp seat, an elastic clip is fixedly connected to the side of the wire clamp seat, one end of the elastic clip is bent and located above the clamping groove, the elastic clip is located between the wire clamp seat and the fastening clamp, and the fastening clamp is electrically connected to adjacent wiring seats and connection seats respectively.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, when installing the cable, the terminal part of the cable is stuck in the installation groove and the fixing card, and the lead-out end of the photovoltaic panel is pressed under the elastic clip, then the top cover is closed and the handle is turned, at this time, with the rotation of the handle, the push block rotates and pushes the sliding plate into the fire box, at this time, the fire-fighting liquid in the fire box is squeezed, driving the multi-stage telescopic rod to extend, and the multi-stage telescopic rod pushes the sliding block to move to both sides, and with the push of the multi-stage telescopic rod, the terminal in the sliding block is finally stuck in the elastic sleeve to connect the photovoltaic panel and the cable, preventing the staff from operating with power on during wiring; secondly, as the handle drives the first rotating shaft to rotate, the first rotating shaft drives the third rotating shaft to rotate, at this time, the pressing block on the third rotating shaft switches from being parallel to the top cover to being perpendicular to the top cover, and its top end abuts against the top surface of the fastening clamp, at this time, the fastening clamp clamps the lead-out end of the photovoltaic panel to prevent it from detaching from between the elastic clip and the wire clamp seat, causing virtual connection and missed connection, and at the same time avoiding live connection of the photovoltaic panel;

[0017] 2. At the same time, when the temperature of the cables and other components in the housing rises and a fire is about to occur or has already occurred, the sliding plate is softened by the heat and deformed under the action of the push block, so that the fire box is no longer sealed, so that the fire-fighting liquid in the fire-fighting box is sprayed out. At the same time, the fire-fighting liquid is vaporized by the heat and the air in the housing is squeezed out, thereby avoiding fire. When the air is squeezed out, the heat of the cables and other components is taken away to cool them down.

[0018] 3. Finally, in the present invention, the first rotating shaft, the second rotating shaft and the third rotating shaft are all located on the bottom surface of the top cover. When the top cover is lifted, the first rotating shaft, the second rotating shaft and the third rotating shaft and their related auxiliary parts are lifted together with the top cover. At this time, the terminal block and the connecting block can be directly contacted, which is convenient for installing and replacing diodes and installing cables and terminal blocks, and preventing the above-mentioned related structures from causing trouble to operators during installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention without the top cover;

[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the housing of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0024] Figure 6 For the present invention Figure 4 Another perspective structural diagram;

[0025] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle;

[0026] Figure 8 This is a schematic diagram of the bottom surface structure of the top cover of the present invention;

[0027] Fig. 9 This is a schematic diagram of the structure of the present invention after removing the top cover and its attached parts.

[0028] In the figure: 1, shell; 2, top cover; 3, one-way air valve; 4, threading hole; 5, handle; 6, first rotating shaft; 7, push block; 8, threading groove; 9, fire box; 10, wiring seat; 11, connecting seat; 12, diode; 13, second rotating shaft; 14, third rotating shaft; 15, pressure block; 16, wire clamp seat; 17, fastening clamp; 18, slide rod; 19, slide block; 20, first spring; 21, installation groove; 22, Fixing card; 23, limiting groove; 24, limiting fixing rod; 25, multi-stage telescopic rod; 26, transmission bevel gear; 27, limiting seat; 28, elastic clip; 29, limiting slide groove; 30, sliding frame; 31, rack; 32, first gear; 33, second gear; 34, first locking block; 35, second locking block; 36, locking rod; 37, sliding plate; 38, clamping groove; 39, guide notch; 40, elastic sleeve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 8As shown, an embodiment of the present invention provides a solar photovoltaic cable installation device, including an outer shell 1 and a top cover 2. Symmetrical threading holes 4 are opened on both sides of the outer shell 1. A first rotating shaft 6 is rotatably installed inside the top cover 2. One end of the first rotating shaft 6 extending out of the top surface of the top cover 2 is fixedly connected to a handle 5. A push block 7 is fixedly sleeved on the first rotating shaft 6. A plurality of threading grooves 8 are opened on the inner bottom surface of the outer shell 1. Two mirror-set wiring seats 10 and a connecting seat 11 are fixedly connected to the inner bottom surface of the outer shell 1. It can be seen from the figure that the two connecting seats 11 are located between the wiring seats 10, and the inner bottom surface of the outer shell 1 A wire clamp seat 16 is fixedly connected to the surface, and a plurality of fastening clips 17 are hinged on the side of the wire clamp seat 16. The second rotating shaft 13 and the third rotating shaft 14 whose axes are perpendicular to each other are rotatably installed on the inner side surface of the top cover 2. The sides at both ends of the third rotating shaft 14 are fixedly sleeved with symmetrically arranged first gears 32. The first rotating shaft 6, the second rotating shaft 13 and the third rotating shaft 14 are fixedly sleeved with transmission bevel gears 26, and the first rotating shaft 6, the second rotating shaft 13 and the third rotating shaft 14 are transmission connected by the mutually meshing transmission bevel gears 26. A symmetrical pressing block 15 is fixedly sleeved on the third rotating shaft 14.

[0031] In the present invention, when installing the cable, the wiring terminal part of the cable is stuck in the installation groove 21 and the fixing card 22, and the lead-out end of the photovoltaic panel is pressed under the elastic clip 28, then the top cover 2 is closed and the handle 5 is turned. At this time, as the handle 5 is turned, the push block 7 rotates and pushes the sliding plate 37 into the fire box 9. At this time, the fire-fighting liquid in the fire box 9 is squeezed, driving the multi-stage telescopic rod 25 to extend, and the multi-stage telescopic rod 25 pushes the sliding block 19 to move to both sides. As the multi-stage telescopic rod 25 is pushed, the wiring terminal in the sliding block 19 is finally stuck in the elastic sleeve 40 to connect the photovoltaic panel and the cable, so as to prevent the staff from operating with power on during wiring; secondly, as the handle 5 drives the first rotating shaft 6 to rotate, the first rotating shaft 6 drives the third rotating shaft 14 Rotate, at this time, the pressure block 15 on the third rotating shaft 14 switches from being parallel to the top cover 2 to being perpendicular to the top cover 2, and its top end abuts against the top surface of the fastening clamp 17. At this time, the fastening clamp 17 clamps the lead-out end of the photovoltaic panel to prevent it from being detached from between the elastic clip 28 and the wire clamp seat 16, causing virtual connection and missed connection, and at the same time avoiding the live connection of the photovoltaic panel; finally, when the temperature of the cables and other components in the outer casing 1 rises and is about to catch fire or has already caught fire, the sliding plate 37 is softened by the heat and deformed under the action of the push block 7, so that the fire box 9 is no longer closed, so that the fire-fighting liquid in the fire-fighting box 9 is sprayed out, and the fire-fighting liquid is vaporized by heat, squeezing out the air in the outer casing 1, thereby avoiding fire, and while the air is squeezed out, it takes away the heat of the cables and other components to cool them down.

[0032] Secondly, in the present invention, the first rotating shaft 6, the second rotating shaft 13 and the third rotating shaft 14 are all located on the bottom surface of the top cover 2. When the top cover 2 is lifted up, the first rotating shaft 6, the second rotating shaft 13 and the third rotating shaft 14 and their related accessories are lifted up together with the top cover 2. At this time, the terminal block 10 and the connecting block 11 can be directly contacted, which is convenient for installing and replacing the diode 12 and installing cables and terminal blocks, and preventing the above-mentioned related structures from causing trouble to the operator during installation and maintenance.

[0033] Among them, the left and right inner sides of the shell 1 are both provided with limited sliding grooves 29 and are slidably connected with a sliding frame 30, the interior of the sliding frame 30 is fixedly connected with a rack 31, and the left and right inner sides of the shell 1 are rotatably installed with symmetrical second gears 33, the second gear 33 is located above the rack 31 and meshes with it, and the top surface of the sliding frame 30 is fixedly sleeved with a locking rod 36, and the left and right inner sides of the shell 1 are both fixedly connected with a first locking block 34, and the front section of the locking rod 36 is slidably sleeved inside a first locking block 34, and the inner side of the top cover 2 is fixedly connected with a second locking block 35, and when the top cover 2 covers the opening of the shell 1, the second locking block 35 is located between the two first locking blocks 34.

[0034] like Figures 2 to 6 As shown, when the handle 5 is turned, the first rotating shaft 6 is driven to rotate. At this time, the rotation of the first rotating shaft 6 drives the third rotating shaft 14 to rotate through the transmission bevel gear 26, and the third rotating shaft 14 drives the first gear 32 and the second gear 33 to rotate, thereby driving the rack 31 to move, and the rack 31 drives the sliding frame 30 to move in the direction of the first locking block 34. At this time, the locking rod 36 passes through the first locking block 34 and the second locking block 35, so that the top cover 2 covers the outer shell 1 to prevent it from being naturally opened due to vibration or strong wind, causing the wiring point to be damaged prematurely due to weathering and other problems.

[0035] Among them, a fire box 9 is fixedly connected to the inner side of the outer shell 1, and the fire box 9 is located between the two threading holes 4. A sliding rod 18 is fixedly connected between the left and right inner sides of the outer shell 1, and a symmetrical sliding block 19 is slidably sleeved on the sliding rod 18. Both sides of the fire box 9 are fixedly connected to a multi-stage telescopic rod 25, and the protruding end of the multi-stage telescopic rod 25 is fixedly connected to the side of the sliding block 19. A first spring 20 sleeved on the sliding rod 18 is elastically connected between one side of the sliding block 19 and the inner side of the outer shell 1.

[0036] like Figures 2 to 6As shown, the fire extinguishing box 9 is arranged so that after the temperature in the outer shell 1 reaches the trigger temperature, the fire extinguishing liquid in the fire extinguishing box 9 is vaporized and sprayed out to push the air in the outer shell 1 out of the one-way air valve 3, and the heat in the outer shell 1 is taken away during the gas flow, while the non-combustible gas fills the outer shell 1, thereby cooling the device in the outer shell 1 and preventing it from catching fire. After the fire extinguishing liquid in the fire extinguishing box 9 is vaporized, the multi-stage telescopic rod 25 lacks liquid drive, and the sliding block 19 is pushed back to the initial installation position by the first spring 20, thereby disconnecting the cable from the photovoltaic panel.

[0037] Among them, the top surface of the sliding block 19 is provided with an installation groove 21, and the top surface of the sliding block 19 is also fixedly connected with multiple fixing cards 22. The installation groove 21 is concentric with the center of the fixing card 22. The top surface of the sliding block 19 is provided with a limiting groove 23, and the inner bottom surface of the outer shell 1 is fixedly connected with a symmetrical limiting fixing rod 24. The limiting fixing rod 24 is "L" shaped. After the sliding block 19 abuts against one side of the limiting fixing rod 24, the protruding end of the limiting fixing rod 24 is clamped in the limiting groove 23.

[0038] like Figures 2 to 6 As shown, after the wiring terminal of the cable is inserted into the elastic sleeve 40, its other end needs to be connected to other circuit devices. At this time, dragging the cable is likely to cause the cable stuck in the installation groove 21 to fall off. Continuing to drag will cause the cable to be pulled out of the housing 1, resulting in connection failure. By setting a limit fixing rod 24, when the cable is dragged externally, the limit fixing rod 24 presses down the cable in the installation groove 21 to prevent the cable from falling out, thereby preventing the wiring terminal stuck in the elastic sleeve 40 from falling out, thereby ensuring the connection of the cable.

[0039] A diode 12 is fixedly connected between the wiring base 10 and the connecting base 11. A notch is provided on the connecting base 11. A guide notch 39 is provided on the side of the wiring base 10 facing the center of the housing 1. An elastic sleeve 40 is fixedly connected in the guide notch 39. The elastic sleeve 40 has a notch.

[0040] like Figures 2 to 6 As shown, when the wiring terminals of the cable are stuck in the installation groove 21 and the fixing card 22, as the multi-stage telescopic rod 25 is extended, the sliding block 19 is pushed to both sides, and as the sliding block 19 moves, when it moves along the guide notch 39 to contact the elastic sleeve 40, it continues to move forward to open the elastic sleeve 40, so that the wiring terminals of the cable enter the elastic sleeve 40, and then the elastic sleeve 40 rebounds, so that the elastic sleeve 40 holds the wiring terminals to connect the photovoltaic panel and the cable. When it is necessary to disconnect, it is only necessary to retract the multi-stage telescopic rod 25, and the sliding block 19 will be reset under the push of the first spring 20, and the cable will automatically disconnect from the circuit of the photovoltaic panel.

[0041] Among them, the outer top surface of the shell 1 is fixedly connected with a one-way air valve 3, which blocks external air from entering the shell 1. The inner side of the top cover 2 is fixedly connected with a sealing rubber ring. When the top cover 2 covers the opening of the shell 1, the sealing rubber ring prevents external air from entering the shell 1. The fire box 9 is slidably connected to the side of the first rotating shaft 6 with a sliding plate 37. The sliding plate 37 is a thermoplastic plastic plate. After the sliding plate 37 contacts with the push block 7, it is pushed into the fire box 9. The interior of the fire box 9 is filled with fire-fighting liquid.

[0042] like Figures 2 to 8 As shown, the sliding plate 37 is located on the side of the fire box 9 facing the first rotating shaft 6. When the staff operates the handle 5 to rotate it, the handle 5 drives the first rotating shaft 6 to rotate, and the first rotating shaft 6 drives the push block 7 to rotate. The push block 7 slides the sliding plate 37 into the fire box 9, and pushes the fire liquid in the fire box 9 to the multi-stage telescopic rods 25 on both sides thereof. At this time, the multi-stage telescopic rods 25 are injected with liquid inside, so that the protruding ends extend outward and push the sliding block 19 to slide to both sides. At this time, the connecting terminals of the cable in the sliding block 19 will be stuck in the elastic sleeve 40 in the wiring seat 10 as the sliding block 19 is pushed, and when the housing 1 occurs When there are other problems that cause temperature rise, such as fire, overheating, etc., the plastic plate is deformed under the action of heat and the push block 7, and the fire box 9 cannot be sealed. At this time, the fire-fighting liquid in the fire-fighting box 9 evaporates into gas, squeezing out the original air in the outer shell 1 to prevent fire or continued burning in the outer shell 1. At the same time, as the fire-fighting liquid in the fire-fighting box 9 evaporates, the sliding block 19 loses the thrust provided by the multi-stage telescopic rod 25. At this time, the sliding block 19 returns under the action of the first spring 20. At this time, under the traction of the sliding block 19, the connecting terminal of the cable is separated from the elastic sleeve 40, and no longer forms a loop with the photovoltaic panel, automatically disconnects and prevents fire.

[0043] The inner bottom surface of the housing 1 is fixedly connected to a limit seat 27 , and a notch is provided on the side of the limit seat 27 facing the fire box 9 . One end of the first rotating shaft 6 is located in the limit seat 27 when the top cover 2 is in a closed state.

[0044] like Figures 2 to 6 As shown, after the top cover 2 is rotated and covered on the outer shell 1, the first rotating shaft 6 enters the interior of the outer shell 1 as the top cover 2 rotates. At this time, one end of the first rotating shaft 6 is stuck in the interior of the limiting seat 27, thereby positioning the first rotating shaft 6; and when the handle 5 is rotated, the setting of the limiting seat 27 also prevents the reaction force when the push block 7 pushes the sliding plate 37 from causing the first rotating shaft 6 to deviate from the original axis, resulting in the inability to push the sliding plate 37, and then causing the sliding block 19 to not move, and the cable terminal cannot be stuck in the elastic sleeve 40.

[0045] Among them, the inner top surface of the wire clamp seat 16 is provided with a plurality of parallel clamping grooves 38, and the side of the wire clamp seat 16 is fixedly connected with an elastic clip 28, one end of the elastic clip 28 is bent and located above the clamping groove 38, and the elastic clip 28 is located between the wire clamp seat 16 and the fastening clip 17, and the fastening clip 17 is electrically connected to the adjacent wiring seat 10 and connecting seat 11 respectively. The specific wiring method is the existing technology and will not be repeated here.

[0046] like Figures 4 to 7 As shown, after the staff passes the lead-out end of the photovoltaic panel through the wire threading groove 8, the lead-out end is clamped between the elastic clip 28 and the wire clamp seat 16 to prevent the lead-out end from shifting and detaching before the subsequent fastening clamp 17 clamps the lead-out end of the photovoltaic panel, resulting in virtual connection and missing connection.

[0047] Working principle:

[0048] When using the device to install cables, first pass the cable with the terminal blocks through the threading hole 4, then clamp the terminal blocks in the fixing clamp 22, and at the same time extend the front end of the terminal blocks to ensure that they can be clamped in the elastic sleeve 40, and then fill the cable into the installation groove 21 to complete the installation of the cable; then pass the lead-out end of the photovoltaic panel through the threading groove 8 and crimp it under the elastic clip 28 to complete the installation of the lead-out end of the photovoltaic panel.

[0049] Then close the top cover 2 and turn the handle. As the handle rotates, the first rotating shaft 6 rotates synchronously, and then the first rotating shaft 6 rotates the third rotating shaft 14 through the second rotating shaft 13 and the transmission bevel gear 26. After the first rotating shaft 6 rotates, the push block 7 pushes the sliding plate 37 into the fire box 9, so that the fire-fighting liquid in the fire box 9 enters the multi-stage telescopic rod 25. At this time, the multi-stage telescopic rod 25 extends and pushes the sliding block 19. As the sliding block 19 moves, the wiring terminal is inserted into the elastic sleeve 40, so that the photovoltaic panel and the cable circuit are connected; and as the third rotating shaft 14 rotates, the pressing block 15 on the third rotating shaft 14 rotates, and the fastening clamp 17 is pressed against the wire clamp seat 16 to prevent the lead-out end of the photovoltaic panel from falling off.

[0050] When the third rotating shaft 14 rotates, the first gear 32 also rotates together, and the rack 31 is moved through the transmission of the second gear 33, thereby driving the sliding frame 30 to move in the direction of the first locking block 34, thereby driving the locking rod 36 to insert into the second locking block 35 and the other first locking block 34, so that the top cover 2 is fixed on the housing 1.

[0051] When the temperature inside the shell 1 rises to a point where a fire is about to occur, the sliding plate 37 softens and deforms due to the heat, and bends under the thrust of the push block 7, thereby causing the fire-fighting liquid in the fire-fighting box 9 to spray out. At this time, the fire-fighting liquid is vaporized by the heat, and the gas in the shell 1 is quickly squeezed out, thereby cooling the shell 1 and preventing fire.

[0052] When it is necessary to measure the photovoltaic panel and replace the diode 12 , it is only necessary to reversely rotate the handle 5 to reset it, and then open the top cover 2 .

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solar photovoltaic cable installation device, comprising a housing (1) and a top cover (2), wherein symmetrical threading holes (4) are provided on both sides of the housing (1), and the device is characterized in that: A first rotating shaft (6) is rotatably mounted inside the top cover (2); one end of the first rotating shaft (6) extending out of the top surface of the top cover (2) is fixedly connected to a handle (5); a push block (7) is fixedly sleeved on the first rotating shaft (6); a plurality of wire threading grooves (8) are provided on the inner bottom surface of the outer shell (1); two wiring seats (10) and a connecting seat (11) arranged in mirror images are fixedly connected to the inner bottom surface of the outer shell (1); a wire clamp seat (16) is fixedly connected to the inner bottom surface of the outer shell (1); a plurality of fastening clips (17) are hingedly connected to the side surface of the wire clamp seat (16); and the top cover (2) is provided with a plurality of wire threading grooves (8) and a plurality of wire threading grooves (8) are fixedly connected to the inner bottom surface of the outer shell (1). A second rotating shaft (13) and a third rotating shaft (14) whose axes are perpendicular to each other are rotatably mounted on the inner side surface of the cover (2); symmetrically arranged first gears (32) are fixedly sleeved on the side surfaces at both ends of the third rotating shaft (14); transmission bevel gears (26) are fixedly sleeved on the first rotating shaft (6), the second rotating shaft (13) and the third rotating shaft (14); the first rotating shaft (6), the second rotating shaft (13) and the third rotating shaft (14) are transmission-connected via the mutually meshing transmission bevel gears (26); and symmetrical pressing blocks (15) are fixedly sleeved on the third rotating shaft (14).

2. A solar photovoltaic cable installation device according to claim 1, characterized in that: The left and right inner sides of the housing (1) are provided with limit sliding grooves (29) and are slidably connected to a sliding frame (30); a rack (31) is fixedly connected inside the sliding frame (30); symmetrical second gears (33) are rotatably mounted on the left and right inner sides of the housing (1); the second gear (33) is located above the rack (31) and meshes with the rack; a locking rod (36) is fixedly sleeved on the top surface of the sliding frame (30); the left and right inner sides of the housing (1) are fixedly connected to a first locking block (34); a front section of the locking rod (36) is slidably sleeved inside a first locking block (34); a second locking block (35) is fixedly connected to the inner side of the top cover (2); when the top cover (2) covers the opening of the housing (1), the second locking block (35) is located between the two first locking blocks (34).

3. A solar photovoltaic cable installation device according to claim 2, characterized in that: A fire box (9) is fixedly connected to the inner side surface of the shell (1), and the fire box (9) is located between the two threading holes (4). A slide rod (18) is fixedly connected between the left and right inner side surfaces of the shell (1), and a symmetrical slide block (19) is slidably sleeved on the slide rod (18). Both sides of the fire box (9) are fixedly connected to multi-stage telescopic rods (25), and the extended ends of the multi-stage telescopic rods (25) are fixedly connected to the side surfaces of the slide block (19). A first spring (20) sleeved on the slide rod (18) is elastically connected between one side of the slide block (19) and the inner side surface of the shell (1).

4. A solar photovoltaic cable installation device according to claim 3, characterized in that: The top surface of the sliding block (19) is provided with a mounting groove (21), and the top surface of the sliding block (19) is also fixedly connected to a plurality of fixing clips (22), the mounting groove (21) and the center of the fixing clips (22) are concentric, the top surface of the sliding block (19) is provided with a limiting groove (23), and the inner bottom surface of the housing (1) is fixedly connected to symmetrical limiting fixing rods (24).

5. A solar photovoltaic cable installation device according to claim 4, characterized in that: The limiting fixing rod (24) is in an "L" shape, and after the sliding block (19) abuts against one side of the limiting fixing rod (24), the protruding end of the limiting fixing rod (24) is clamped in the limiting groove (23).

6. A solar photovoltaic cable installation device according to claim 5, characterized in that: A diode (12) is fixedly connected between the wiring seat (10) and the connecting seat (11); a notch is provided on the connecting seat (11); a guide notch (39) is provided on a side of the wiring seat (10) facing the center of the housing (1); an elastic sleeve (40) is fixedly connected in the guide notch (39); and the elastic sleeve (40) has a notch.

7. A solar photovoltaic cable installation device according to claim 6, characterized in that: A one-way air valve (3) is fixedly connected to the outer top surface of the outer shell (1), and the one-way air valve (3) blocks external air from entering the inner side surface of the outer shell (1). A sealing rubber ring is fixedly connected to the inner side surface of the top cover (2), and when the top cover (2) covers the opening of the outer shell (1), the sealing rubber ring prevents external air from entering the inner side surface of the outer shell (1).

8. A solar photovoltaic cable installation device according to claim 7, characterized in that: A sliding plate (37) is slidably connected to one side of the fire fighting box (9) facing the first rotating shaft (6); the sliding plate (37) is pushed into the fire fighting box (9) by the pushing block (7) after contacting the pushing block (7); and the interior of the fire fighting box (9) is filled with fire fighting liquid.

9. A solar photovoltaic cable installation device according to claim 8, characterized in that: The inner bottom surface of the housing (1) is fixedly connected to a limit seat (27), and a notch is provided on a side of the limit seat (27) facing the fire box (9). One end of the first rotating shaft (6) is located in the limit seat (27) when the top cover (2) is in a closed state.

10. A solar photovoltaic cable installation device according to claim 9, characterized in that: The inner top surface of the wire clamp seat (16) is provided with a plurality of parallel clamping grooves (38); the side surface of the wire clamp seat (16) is fixedly connected with an elastic clip (28); one end of the elastic clip (28) is bent and located above the clamping groove (38); the elastic clip (28) is located between the wire clamp seat (16) and the fastening clip (17); the fastening clip (17) is electrically connected to adjacent wiring seats (10) and connecting seats (11), respectively.

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