Photovoltaic inverter protection device

Abstract

The present invention discloses a photovoltaic inverter protection device, comprising a protection box having a protection chamber and a supporting mechanism disposed at the bottom of the protection chamber, wherein a photovoltaic inverter is placed on the supporting mechanism via a supporting seat; the supporting mechanism comprises a base having a concave cavity, and guide rails are disposed on both sides of the base; a support plate is disposed inside the supporting seat disposed on the concave cavity, and a positioning assembly is disposed on the supporting plate, the positioning assembly comprising a push rod and a blocking rod perpendicular to each other, the push rod and the blocking rod being movably connected at one end thereof close to each other, an inner groove is provided on the inner side of the guide rail, and a limiting hole is disposed in the inner groove that is adapted to the free end of the blocking rod. In the protection device provided by the present invention, the supporting seat is positioned on the base under the positioning action of the positioning assembly, so that the photovoltaic inverter is positioned in a position suitable for maintenance or surveying in the protection box, achieving the effect of facilitating installation and disassembly, greatly improving the maintenance efficiency of the photovoltaic inverter, reducing labor costs, and solving the problem of inconvenience in use.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic inverters, and more particularly to a photovoltaic inverter protection device. Background Art

[0002] A photovoltaic inverter converts the variable DC voltage generated by photovoltaic solar panels into AC power at mains frequency, which can be fed back to commercial power transmission systems or used by off-grid power grids. Currently, most photovoltaic inverters are directly fixed and encapsulated in a relatively simple sealed box, such as Patent 201721209645.1 and Patent 201720386179.8. The photovoltaic inverter is fixed or clamped in the sealed box with bolts. During maintenance, the outer casing needs to be removed. Due to the limited internal space of the sealed box, the disassembly process is cumbersome and the installation after disassembly is not convenient, which brings inconvenience to workers. Summary of the Invention

[0003] To this end, the technical problem to be solved by the present invention is to provide a photovoltaic inverter protection device, in which the base is arranged along the length direction toward the inside of the protection box, and the photovoltaic inverter is loaded on the supporting seat. The supporting seat is positioned at a certain position on the base under the positioning action of the positioning component, so that the photovoltaic inverter is positioned in a position suitable for maintenance or survey in the protection box, so as to achieve the effect of easy installation and disassembly, greatly improve the maintenance efficiency of the photovoltaic inverter, reduce labor costs, and solve the problem of inconvenience in use.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A photovoltaic inverter protection device includes a protection box having a protection chamber and a bearing mechanism disposed at the bottom of the protection chamber, wherein the photovoltaic inverter is placed on the bearing mechanism in the protection chamber via a bearing seat;

[0006] The supporting mechanism includes a base having an inwardly recessed cavity, two parallel guide rails protruding from the cavity on both sides of the base, and the base is displaced along the cavity and the guide rails in the length direction of the base toward the back of the base;

[0007] A support plate is provided inside the bearing seat placed on the concave cavity, and a positioning component for limiting the position of the bearing seat is provided on the support plate. The positioning component includes a push rod and a stop rod that are perpendicular to each other and are provided on the support plate. The push rod and the stop rod are movably connected at one end close to each other. An inner groove arranged along the length direction of the guide rail is provided on the inner side of the guide rail corresponding to the free end of the stop rod, and a limiting hole adapted to the free end of the stop rod is provided in the inner groove, which is formed by two or more baffles arranged at equal intervals.

[0008] Furthermore, the outer side of the guide rail away from the concave cavity has a sliding groove arranged along the length direction of the guide rail, the end of the guide rail corresponding to the support seat is provided with a sliding hole adapted to the guide rail, and the bearing seat corresponding to the sliding groove is provided with a protrusion adapted to the sliding groove.

[0009] Furthermore, the push rod is arranged along the length direction of the base, the blocking rod is arranged along the width direction of the base, the end of the push rod close to the blocking rod is connected to a chuck with a clamping groove, the end of the blocking rod close to the push rod is connected to a plate-shaped partition, the partition is provided with a give way groove passing through the partition, the chuck slides and displaces in the give way groove through a sliding column, and the upper end surface of the support plate corresponds to the connection between the blocking rod and the push rod to accommodate the partition and the chuck;

[0010] The upper end surface of the support plate is also provided with a concave track for the blocking rod and the push rod to slide. The concave track is recessed into the interior of the support plate and is connected to the groove. The push rod and the blocking rod are placed in the concave track and the upper end surface is flush with the upper end surface of the support plate. The two ends of the concave track that wraps the blocking rod are connected to a spring that sleeves the blocking rod.

[0011] The upper end surface of the bearing seat is provided with a locking mechanism for clamping the photovoltaic inverter, and the locking mechanism is connected to the push rod through a pull rod.

[0012] Furthermore, the push rod and pull rod are arranged in parallel and a gear rod 1 and a gear rod 2 are respectively provided on the opposite sides of the push rod and the pull rod. The gear rod 1 and the gear rod 2 are connected by gear meshing. The gear is arranged on the upper end surface of the support plate through a support, and a through groove is provided on the upper end surface of the bearing seat for the displacement of the pull rod.

[0013] Furthermore, the locking mechanism includes a boss 1 connected to the end of the pull rod away from one end of the push rod and sliding relative to the upper end surface of the bearing seat, the end of the pull rod close to the boss 1 is sleeved with a stop plate fixed relative to the pull rod, and two symmetrical fixing seats are provided on the upper end surface of the bearing seat and on both sides corresponding to the boss 1, and both ends of the stop plate corresponding to the two fixing seats are penetrated into the through-platform of the fixing seat through a guide rod;

[0014] The fixing seat is provided with a limit plate at one end close to the stop plate, extending in a direction of the boss and parallel to the stop plate. A stop rod penetrating the limit plate is connected to a side wall of the limit plate corresponding to the boss, one end of the stop rod is arranged toward the stop plate, and the other end of the stop rod is arranged toward the boss.

[0015] A boss 2 symmetrical to boss 1 is connected between the ends of the two fixing seats away from the stop plate. A clamping groove protruding toward boss 1 is provided on the side of the fixing seat facing boss 1. Boss 1, boss 2 and the clamping groove form a clamping cavity for the photovoltaic inverter.

[0016] Furthermore, a guide groove is provided at one end of the penetration platform inside the fixing seat away from the stop plate, one end of the guide rod is fixedly connected to the stop plate, and the other end of the guide rod is connected to the guide groove at a second height via a spring.

[0017] Furthermore, a fixing hole for positioning the protection box is provided at the top of the protection box, and a positioning mechanism for fixing the protection box is adapted to be connected in the fixing hole, and the positioning mechanism includes an outer rod and an inner rod coaxially sleeved in the outer rod and displaced relative to the outer rod;

[0018] The outer rod is provided with a channel 1 and a channel 2 for displacement of the inner rod, and the inner rod is provided with a through rod at one end close to the channel 1, and the through rod of the inner rod passes through the channel 2 and extends into the channel 1. The through rod is provided with a movable ring at one end close to the inner rod, and the movable ring is arranged in contact with the outer side of the channel 2. The movable ring is hinged with two pressure rods on two opposite sides of the outer rod, and an accommodating groove for accommodating the pressure rod is opened at the outer wall of the outer rod corresponding to the pressure rod;

[0019] A spring three is sleeved on the outside of the penetrating rod in the second channel. One end of the spring three is fixedly connected to the movable ring, and the other end of the spring three is fixedly connected to the side wall of the second channel.

[0020] Furthermore, a threaded section is provided at one end of the inner rod away from the outer rod, and the inner rod is connected to a nut via the threaded section.

[0021] The technical solution of the present invention achieves the following beneficial technical effects:

[0022] 1. The present invention provides a photovoltaic inverter protection device, in which the base is arranged along the length direction toward the inside of the protection box, and the photovoltaic inverter is loaded on the bearing seat. The bearing seat is positioned at a certain position on the base under the positioning action of the positioning component, so that the photovoltaic inverter is positioned at a position suitable for maintenance or survey in the protection box, so as to achieve the effect of easy installation and disassembly, greatly improve the maintenance efficiency of the photovoltaic inverter, reduce labor costs, and solve the problem of inconvenience in use.

[0023] 2. The present invention provides a photovoltaic inverter protection device. When the push rod is pushed into the inside of the support plate by an external force, the positioning of the bearing seat is released. At this time, the bearing seat can move, and the pull rod is displaced in the opposite direction to the push rod under the action of the gear rack, driving the locking mechanism to loosen, and the boss one gradually moves away from the boss two until the photovoltaic inverter is completely loosened, which is convenient for the installation or removal of the photovoltaic inverter; when the push rod is pulled out of the support plate by an external force, the bearing seat is positioned and fixed, and the pull rod is displaced in the opposite direction to the push rod under the action of the gear rack, and the boss one gradually approaches the boss two until the photovoltaic inverter is locked, thereby clamping and fixing the photovoltaic inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1A schematic structural diagram of a photovoltaic inverter protection device according to the present invention;

[0025] Figure 2 A schematic diagram of a supporting mechanism of a photovoltaic inverter protection device according to the present invention;

[0026] Figure 3 A schematic diagram of a positioning assembly of a photovoltaic inverter protection device according to the present invention;

[0027] Figure 4 A schematic diagram of the connection between a push rod and a pull rod of a photovoltaic inverter protection device according to the present invention;

[0028] Figure 5 A schematic diagram of a locking mechanism of a photovoltaic inverter protection device according to the present invention;

[0029] Figure 6 A schematic diagram of a limiting mechanism of a photovoltaic inverter protection device according to the present invention.

[0030] The reference numerals in the figures are as follows: 1, protection box; 2, fixing hole; 3, protection chamber; 4, bearing mechanism; 5, base; 51, slide groove; 52, inner groove; 53, baffle; 54, limiting hole; 55, concave cavity; 56, guide rail; 6, bearing seat; 61, slide hole; 62, protrusion; 7, support plate; 8, positioning assembly; 81, push rod; 811, gear rod 1; 82, chuck; 83, baffle; 84, partition; 85, spring 1; 86, clearance groove; 87, groove; 88, concave rail; 9, gear rod 2; 10. Pull rod; 11. Gear; 12. Support; 13. Locking mechanism; 131. Stop plate; 132. Fixed seat; 1321. Through platform; 1322. Clamping groove; 133. Limit plate; 134. Stop rod; 135. Boss one; 136. Boss two; 137. Guide rod; 138. Spring two; 139. Guide groove; 14. Outer rod; 15. Inner rod; 151. Through rod; 16. Press rod; 17. Accommodating groove; 18. Movable ring; 19. Spring three; 20. Channel one; 21. Channel two; 22. Nut. DETAILED DESCRIPTION

[0031] This embodiment provides a photovoltaic inverter protection device, such as Figure 1 and Figure 6 As shown, it includes a protective box 1 with a protective chamber 3 and a supporting mechanism 4 arranged at the bottom of the protective chamber 3. The photovoltaic inverter is placed on the supporting mechanism 4 in the protective chamber 3 through a supporting seat 6. The photovoltaic inverter can adjust its position on the supporting mechanism 4. A fixing hole 2 for positioning the protective box 1 is provided at the top of the protective box 1. A limiting mechanism 2 for fixing the protective box 1 is adapted to be connected in the fixing hole 2. The limiting mechanism 2 passes through the fixing plate for fixing the protective box 1 and the fixing hole 2 on the protective box to fix the entire protective box at a specified position.

[0032] The limiting mechanism 2 includes an outer rod 14 and an inner rod 15 coaxially sleeved in the outer rod 14 and displaced relative to the outer rod 14; a channel 1 20 and a channel 2 21 are provided inside the outer rod 14 for displacement of the inner rod 15, the cross-sectional area of ​​the channel 2 is larger than the cross-sectional area of ​​the channel 1, and the channel 1 forms a closing structure near the channel 2, and a penetrating rod 151 is provided at one end of the inner rod 15 near the channel 1 20, the cross-sectional area of ​​the penetrating rod is smaller than the cross-sectional area of ​​the inner rod, and the cross-sectional area of ​​the penetrating rod can penetrate into the channel 1, and the penetrating rod 151 of the inner rod 15 passes through the channel 2 21 and extends into the channel 1 20, and the penetrating rod 151 is close to the inner rod 15 One end is provided with a movable ring 18, and the movable ring 18 is arranged to abut the outside of the second channel 21. The movable ring 18 is hinged on two sides opposite to the outer rod 14, and the outer wall of the outer rod 14 is provided with an accommodating groove 17 for accommodating the pressure rod 16 corresponding to the pressure rod 16; the outside of the through rod 151 in the second channel 21 is provided with a spring three 19, one end of the spring three 19 is fixedly connected to the movable ring 18, and the other end of the spring three 19 is fixedly connected to the side wall of the second channel 21; the end of the inner rod 15 away from the outer rod 14 is provided with a threaded section, and the inner rod 15 is connected to a nut 22 through the threaded section.

[0033] When fixing the protective box, pinch the pressure rod on the outer rod into the corresponding receiving groove, push and pull the inner rod so that the end of the outer rod passes through the corresponding fixing holes on the fixing plate and the protective box until the free end of the pressure plate passes through. In this process, the penetration rod is squeezed by the spring three and the movable ring and extends into the channel one. When the free end of the pressure plate completely passes through the fixing hole and reaches the outer side of the protective box, release the pressure plate and pull the inner rod backward until the free end of the pressure rod extending out of the receiving groove abuts against the outer side of the protective box. Adjust the distance between the nut on the threaded section until the nut fits with the fixing plate. At this time, the entire outer rod and the fixing hole form a relatively fixed structure, fixing the protective box in the specified position. When disassembly is required, loosen the nut, pinch the pressure plate into the receiving groove, pull the inner rod in the opposite direction, pull the outer rod out of the fixing hole to remove the protective box, and installation and disassembly are convenient.

[0034] Combine Figure 2The carrying mechanism 4 includes a base 5 having an inwardly recessed cavity 55, and two parallel guide rails 56 protruding from the cavity 55 on both sides of the base 5. The base 5 moves along the cavity 55 and the guide rails 56 in the length direction of the base 5 toward the back of the base 5. The guide rail 56 has a slide groove 51 arranged along the length direction of the guide rail 56 on the outer side away from the cavity 55. The end of the supporting seat 6 corresponding to the guide rail 56 is provided with a slide hole 61 adapted to the guide rail 56, and the position of the supporting seat 6 corresponding to the slide groove 51 is provided with a protrusion 62 slidably adapted to the slide groove 51. When the supporting seat is pushed by external force, the bottom of the supporting seat in contact with the other concave cavities displaces along the length direction of the base, and the slide grooves on both sides of the supporting seat displace along the direction of the guide rails, and the protrusions in the slide grooves move accordingly. The slide grooves, guide rails and concave cavities play multiple guiding and anti-deflection roles in the displacement direction of the supporting seat, so as to facilitate the adjustment of the position of the photovoltaic inverter in the protective box. When maintenance is required, the photovoltaic inverter is pulled to the edge of the base for easy inspection. After the maintenance is completed, the photovoltaic inverter is sent to the inside of the protective box for easy fixation, so that the photovoltaic inverter is positioned in a position suitable for maintenance or survey in the protective box.

[0035] Combine Figure 3 , a support plate 7 is provided inside the bearing seat 6 placed on the concave cavity 55, and a positioning assembly 8 for limiting the position of the bearing seat is provided on the support plate. The positioning assembly 8 includes a push rod 81 and a stop rod 83 which are perpendicular to each other and are arranged on the support plate 7. The push rod 81 and the stop rod 83 are movably connected at one end close to each other. The inner side of the guide rail 56 corresponding to the free end of the stop rod 83 is provided with an inner groove 52 arranged along the length direction of the guide rail 56, and the inner groove 52 is provided with a limiting hole 54 which is formed by two or more stop plates 53 arranged at equal intervals and adapted to the free end of the stop rod 83. The push rod 81 is arranged along the length direction of the base 5, and the stop rod 83 is arranged along the width direction of the base 5. The end of the push rod 81 close to the stop rod 83 is connected to a clamping head 82 with a clamping groove 1322, and the end of the stop rod 83 close to the push rod 81 is connected to a plate-shaped partition The cam 83 is pressed against the bottom surface of the support plate 7 so that the cam 83 and the push rod 81 can slide in the cam 83 and the push rod 81.

[0036] The push rod and the baffle rod cooperate with each other and are arranged vertically relative to each other. With the sliding column as the origin, the push rod and the baffle rod are in a two-dimensional rectangular coordinate relationship, and the give way groove is inclined. When the push rod is pulled out, since the push rod is displaced linearly, the baffle rod is also displaced horizontally under the action of the sliding column and the give way groove. At this time, the baffle rod moves outward and extends into the limiting hole in the corresponding position. The baffle rod is positioned so that the entire bearing seat is limited to this position; when the bearing seat needs to move, the push rod is pushed into the inside of the support plate, and the baffle rod cooperates with the push rod to displace into the inside of the support plate. The end of the baffle rod disengages from the limiting hole, and then pushes the entire bearing seat to the specified position, and then repeats the above steps to achieve the positioning of the bearing seat.

[0037] Combine Figure 4 The upper end surface of the supporting seat 6 is provided with a locking mechanism 13 for clamping the photovoltaic inverter. The locking mechanism 13 is connected to the push rod 81 through the pull rod 10. The push rod 81 and the pull rod 10 are arranged in parallel, and the push rod 81 and the pull rod 10 are provided with a gear rod 1 811 and a gear rod 2 9 on the side facing each other. The gear rod 1 811 and the gear rod 2 9 are meshed and connected by a gear 11. The gear 11 is provided on the upper end surface of the support plate 7 through a support 12. The upper end surface of the supporting seat 6 is provided with a through groove for the displacement of the pull rod 10.

[0038] Combine Figure 5 The locking mechanism 13 includes a boss 135 that is connected to the end of the pull rod 10 away from the push rod 81 and slides relative to the upper end surface of the supporting seat 6. The end of the pull rod 10 close to the boss 135 is provided with a stop plate 131 fixed relative to the pull rod 10. Two symmetrical fixing seats 132 are provided on the upper end surface of the supporting seat 6 and on both sides of the corresponding boss 135. The two ends of the stop plate 131 corresponding to the two fixing seats 132 are penetrated into the through-platform 1321 of the fixing seat 132 through a guide rod 137. The through-platform 1321 inside the fixing seat 132 is provided with a guide groove 139 at the end away from the stop plate 131. One end of the guide rod 137 is fixedly connected to the stop plate 131, and the other end of the guide rod 137 is connected to the guide groove through a spring 2 138 139; The fixing seat 132 is provided with a limiting plate 133 extending toward the boss 135 and parallel to the stop plate 131 at one end thereof close to the stop plate 131, and a stop rod 134 passing through the limiting plate 133 is connected to the side wall of the boss 135 corresponding to the limit plate 133, and one end of the stop rod 134 is arranged toward the stop plate 131, and the other end of the stop rod 134 is arranged toward the boss 135; a boss 2 136 symmetrical to the boss 135 is connected between the ends of the two fixing seats 132 away from the stop plate 131, and a clamping groove 1322 protruding toward the boss 135 is provided on the side of the fixing seat 132 facing the boss 135, and the boss 1 135, the boss 2 136 and the clamping groove 1322 form a clamping cavity for the photovoltaic inverter.

[0039] When the push rod is pushed to the inside of the supporting plate by an external force, the positioning of the bearing seat is released, and the bearing seat can move at this time. The pull rod is displaced in the opposite direction to the push rod under the action of the gear rack, driving the locking mechanism to loosen, and the boss one gradually moves away from the boss two until the photovoltaic inverter is completely loosened, which is convenient for installing or removing the photovoltaic inverter; when the push rod is pulled out of the supporting plate by an external force, the bearing seat is positioned and fixed, and the pull rod is displaced in the opposite direction to the push rod under the action of the gear rack, and the boss one gradually approaches the boss two until the photovoltaic inverter is locked, clamping and fixing the photovoltaic inverter, and the locking mechanism is loosened as the bearing seat moves, which is convenient for installing or removing the photovoltaic inverter, and the positioning locking mechanism of the bearing seat can clamp and fix the photovoltaic inverter, thereby fixing the photovoltaic inverter in the protective room of the protective box. In the process of pulling out the photovoltaic inverter, the photovoltaic inverter is firmly fixed in the limited space composed of the boss one, the boss two and the clamping groove, thereby preventing the photovoltaic inverter from tipping over.

[0040] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the claims of this patent application.

Claims

1. A photovoltaic inverter protection device, characterized in that: It includes a protection box with a protection chamber and a bearing mechanism arranged at the bottom of the protection chamber, and the photovoltaic inverter is placed on the bearing mechanism in the protection chamber through a bearing seat; The supporting mechanism includes a base having an inwardly recessed cavity, two parallel guide rails protruding from the cavity on both sides of the base, and the base is displaced along the cavity and the guide rails in the length direction of the base toward the back of the base; A support plate is provided inside the bearing seat placed on the concave cavity, and a positioning assembly for limiting the position of the bearing seat is provided on the support plate, and the positioning assembly includes a push rod and a stop rod perpendicular to each other provided on the support plate, and the push rod and the stop rod are movably connected at one end close to each other, and an inner groove arranged along the length direction of the guide rail is provided on the inner side of the guide rail corresponding to the free end of the stop rod, and a limiting hole adapted to the free end of the stop rod is provided in the inner groove, which is formed by two or more stop plates arranged at equal intervals; The push rod is arranged along the length direction of the base, the blocking rod is arranged along the width direction of the base, the push rod is connected to a chuck with a clamping groove at one end close to the blocking rod, the blocking rod is connected to a plate-shaped partition at one end close to the push rod, the partition is provided with a clearance groove penetrating the partition, the chuck slides and displaces in the clearance groove through a sliding column, and the upper end surface of the support plate corresponds to the connection between the blocking rod and the push rod to accommodate the partition and the chuck; The upper end surface of the support plate is also provided with a concave track for sliding the baffle rod and the push rod, the concave track is recessed into the interior of the support plate and is connected to the groove, the push rod and the baffle rod are placed in the concave track and the upper end surface is flush with the upper end surface of the support plate, and the two ends of the concave track that wraps the baffle rod are connected to a spring that sleeves the baffle rod; The upper end surface of the bearing seat is provided with a locking mechanism for clamping the photovoltaic inverter, and the locking mechanism is connected to the push rod through a pull rod; The locking mechanism includes a boss 1 connected to the end of the pull rod away from one end of the push rod and sliding relative to the upper end surface of the bearing seat, and a stop plate fixed relative to the pull rod is sleeved on the end of the pull rod close to the boss 1. Two symmetrical fixing seats are provided on the upper end surface of the bearing seat and on both sides of the boss 1. The two ends of the stop plate corresponding to the two fixing seats are penetrated into the interior of the through-platform of the fixing seat through a guide rod; The fixing seat is provided with a limit plate at one end close to the stop plate, extending in a direction of the boss and parallel to the stop plate. A stop rod penetrating the limit plate is connected to a side wall of the limit plate corresponding to the boss, one end of the stop rod is arranged toward the stop plate, and the other end of the stop rod is arranged toward the boss. A boss 2 symmetrical to boss 1 is connected between the ends of the two fixing seats away from the stop plate. A clamping groove protruding toward boss 1 is provided on the side of the fixing seat facing boss 1. Boss 1, boss 2 and the clamping groove form a clamping cavity for the photovoltaic inverter.

2. The photovoltaic inverter protection device according to claim 1, characterized in that: The outer side of the guide rail away from the concave cavity has a sliding groove arranged along the length direction of the guide rail, the end of the bearing seat corresponding to the guide rail is provided with a sliding hole adapted to the guide rail, and the bearing seat corresponding to the sliding groove is provided with a protrusion adapted to slide with the sliding groove.

3. The photovoltaic inverter protection device according to claim 1, characterized in that: The push rod and pull rod are arranged in parallel, and a gear rod 1 and a gear rod 2 are respectively provided on the opposite sides of the push rod and the pull rod. The gear rod 1 and the gear rod 2 are connected by gear meshing. The gear is arranged on the upper end surface of the support plate through a support, and a through groove is provided on the upper end surface of the bearing seat for the displacement of the pull rod.

4. The photovoltaic inverter protection device according to claim 1, characterized in that: A guide groove is provided at one end of the penetration platform located inside the fixing seat and away from the stop plate. One end of the guide rod is fixedly connected to the stop plate, and the other end of the guide rod is connected to the guide groove via a second spring.

5. The photovoltaic inverter protection device according to claim 1, characterized in that: The top of the protection box is provided with a fixing hole for positioning the protection box, and a limiting mechanism for fixing the protection box is adapted to be connected in the fixing hole. The limiting mechanism includes an outer rod and an inner rod coaxially sleeved in the outer rod and displaced relative to the outer rod; The outer rod is provided with a channel 1 and a channel 2 for displacement of the inner rod, and the inner rod is provided with a through rod at one end close to the channel 1, and the through rod of the inner rod passes through the channel 2 and extends into the channel 1. The through rod is provided with a movable ring at one end close to the inner rod, and the movable ring is arranged in contact with the outer side of the channel 2. The movable ring is hinged with two pressure rods on two opposite sides of the outer rod, and an accommodating groove for accommodating the pressure rod is opened at the outer wall of the outer rod corresponding to the pressure rod; A spring three is sleeved on the outside of the penetrating rod in the second channel. One end of the spring three is fixedly connected to the movable ring, and the other end of the spring three is fixedly connected to the side wall of the second channel.

6. The photovoltaic inverter protection device according to claim 5, characterized in that: A threaded section is provided on one end of the inner rod away from the outer rod, and the inner rod is connected with a nut via the threaded section.

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