CN115085044A - Photovoltaic power generation exchanges case safety device that is incorporated into power networks - Google Patents

Abstract

The invention discloses a safety device of a photovoltaic power generation alternating current grid-connected box, which comprises: the insulation protection box and the grid-connected box are arranged in the insulation protection box in a vertically sliding mode; an elastic clamping assembly is arranged between the insulating protection box and the top of the grid-connected box and is used for realizing multi-point clamping of the grid-connected box from the upper side and two sides when the grid-connected box moves upwards; the bottom opening of the insulation protection box is provided with a rotating opening component and a linkage component, the rotating opening component is connected with the net cage through the linkage component, and the rotating opening component drives the net cage to lift; the insulation protection box is provided with a clamping assembly, and when the opening assembly is rotated to open the bottom opening of the insulation protection box, the clamping assembly is clamped with the linkage assembly. According to the invention, the grid-connected box is slidably accommodated in the insulating protection box, so that the grid-connected box is prevented from being directly exposed and installed outside, rainwater and dust are effectively prevented from entering the inside of the grid-connected box, the phenomenon of short circuit or circuit aging of the grid-connected box is avoided, and the occurrence of power utilization safety accidents is reduced to a certain extent.

Description

Photovoltaic power generation exchanges case safety device that is incorporated into power networks

Technical Field

The invention relates to the technical field of safety devices, in particular to a safety device of a photovoltaic power generation alternating current grid-connected box.

Background

The photovoltaic power generation is a technology for directly converting light energy into electric energy by utilizing a photovoltaic effect of a semiconductor interface, the photovoltaic power generation device mainly comprises three parts, namely a solar cell panel, a controller and an inverter, solar cells are connected in series and then packaged and protected to form a large-area solar cell module, and the photovoltaic power generation device is formed by matching with components such as a power controller and the like. In the photovoltaic power generation process, a plurality of electrical equipment such as an alternating current grid-connected box safety device are required to be used.

The conventional safety device of the alternating current grid-connected box is fixedly installed in a direct exposure mode, so that rainwater or dust easily enters the interior of the safety device, and the phenomenon of short circuit is easily caused; meanwhile, the circuit aging phenomenon easily occurs due to long-term exposure, so that circuit safety accidents easily occur, the existing safety device is mostly fixed by screwing bolts, and internal elements are easily damaged after strong vibration, so that the normal work cannot be performed.

Disclosure of Invention

The invention provides a safety device of a photovoltaic power generation alternating current grid-connected box, aiming at the problems that in the prior art, safety devices are exposed and installed, rainwater and dust easily enter or safety accidents easily occur due to circuit aging, and internal elements are easily damaged due to strong vibration.

The invention discloses a safety device of a photovoltaic power generation alternating current grid-connected box, which comprises: the insulation protection box and the grid-connected box;

the net combining box is arranged in the insulation protection box in a vertically sliding mode through the lifting assembly;

an elastic clamping assembly is arranged between the insulating protection box and the top of the grid-connected box and is used for realizing multi-point clamping of the grid-connected box from the upper side and two sides when the grid-connected box moves upwards;

the bottom opening of the insulation protection box is provided with a rotary opening component for rotatably opening and closing the bottom opening of the insulation protection box;

the insulation protection box is provided with a linkage assembly, the rotating opening assembly is connected with the grid-connected box through the linkage assembly and is used for driving the grid-connected box to lift through the rotation of the rotating opening assembly;

the insulation protection box is provided with a clamping assembly, and the clamping assembly is clamped with the linkage assembly when the opening assembly is rotated to open the bottom opening of the insulation protection box.

As a further improvement of the present invention, the lifting assembly comprises: the damping telescopic rods are symmetrically arranged on two sides of the guide rod;

the guide rod is vertically arranged at the bottom of the top plate of the insulation protection box and is slidably inserted into the sliding hole of the combined net box;

one end of the damping telescopic rod is installed at the bottom of the top plate of the insulation protection box, and the other end of the damping telescopic rod is installed at the top of the combined net box.

As a further improvement of the invention, the elastic clamping assembly comprises: the piston comprises an upper hole, a piston A, a connecting column A, a spring A, a side hole, a piston B, a connecting column B and a connecting hole;

the top plate of the insulation protection box is provided with the upper hole, two side plates of the insulation protection box are provided with symmetrical side holes, and the upper hole is communicated with the side holes through the connecting holes;

the piston A and the connecting column A which are connected are arranged in the upper hole in a sliding mode, and a spring A for providing compression reset is sleeved on the connecting column A;

and each side hole is internally provided with a piston B and a connecting column B in a sliding manner, and the connecting column B is sleeved with a spring A for providing compression reset.

As a further improvement of the invention, the ends of the connecting column A and the connecting column B are both fixedly provided with rubber chucks.

As a further improvement of the present invention, the rotary opening assembly comprises: a volute spiral spring, a rotating rod and a bottom plate;

the rotating rod is horizontally arranged at the lower ends of two side plates of the insulation protection box, the rotating rod is elastically connected with the two side plates of the insulation protection box through the volute springs, and the outer surface of the rotating rod is positioned at the position of a lower port of the insulation protection box and fixedly sleeved with the bottom plate.

As a further improvement of the present invention, the interlocking member includes: the device comprises a rotating shaft, a belt pulley group, a gear and a rack;

the rotating shaft is horizontally inserted between the two side plates of the insulation protection box in a rotating mode and is positioned above the rotating rod; the rotating shaft is in transmission connection with the rotating rod through the belt pulley group, the gear is fixedly sleeved on the rotating shaft, and the rack meshed with the gear is arranged on the rear side surface of the net cage.

As a further improvement of the present invention, the clamping assembly comprises: the device comprises a rotating disc, a bayonet, a side end box, a sliding block, a spring B and a clamping column;

the rotating disc is fixedly sleeved at one end part of the rotating shaft, and the bayonet is formed in the outer surface of the rotating disc; the side surface of the insulation protection box is positioned above the rotating disc and is fixedly provided with the side end box, the sliding block is arranged in the side end box in a sliding manner, and the spring B is arranged between the upper surface of the sliding block and the inner wall of the side end box; sliding block lower fixed surface installation the card post, just card post tip extends the side box outside with the bayonet socket corresponds the joint cooperation.

As a further improvement of the invention, the method also comprises the following steps: screwing the assembly and the inserting assembly;

the screwing component is arranged on the rotating opening component, and the inserting component is arranged on one side of the screwing component and is positioned in the rotating opening component; the rotary opening assembly is inserted into the insulation protection box through the insertion assembly, and the insertion assembly is unlocked through the screwing assembly.

As a further improvement of the invention, the screwing assembly comprises: the torsion spring is arranged on the through groove;

the bottom surface of the bottom plate is provided with the through groove at the middle position, the rotating shaft is horizontally arranged between the surfaces of the side walls of the through groove, and the rotating shaft is elastically connected with the side walls of the through groove through a torsion spring; the outer surface of the rotating shaft is fixedly sleeved with the oval disc, and the lower surface of the oval disc is fixedly provided with the torsion handle.

As a further improvement of the present invention, the plug assembly comprises: the plug comprises an inner hole, a plug post, a spring C and a jack;

the upper surface of the bottom plate is provided with the inner hole at a position between the side wall of the insulation protection box and the through groove, the inner part of the inner hole is inserted with the inserting column in a sliding manner, and the inserting column is sleeved with a spring C for providing compression reset; the side surface of the insulation protection box is provided with a jack corresponding to one end of the inserting column, the other end of the inserting column is abutted against the oval disc, and the inserting column is inserted into or separated from the jack under the action of the oval disc.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the grid-connected box is slidably accommodated in the insulating protection box through the linkage effect among the rotary opening component, the linkage component and the clamping component, so that the grid-connected box is prevented from being directly exposed and installed outside, rainwater and dust are effectively prevented from entering the inside of the grid-connected box, the phenomenon of short circuit or circuit aging of the grid-connected box is avoided, and the occurrence of power utilization safety accidents is reduced to a certain extent;

2. the structure matching of the screwing component and the inserting component is convenient for opening and closing the bottom plate, and the net cage is convenient to maintain or replace, so that the operation is simple and convenient, and time and labor are saved;

3. according to the invention, by arranging the elastic clamping assembly and the lifting assembly, the problem that the internal elements of the grid-connected box are damaged due to strong vibration in the prior art is effectively solved; meanwhile, under the action of gas pressure in the connecting holes in the device, the rubber chucks can well elastically clamp the grid-connected box, so that internal elements of the net cage are effectively prevented from being damaged due to vibration, and the overall practical service life of the grid-connected box is prolonged to a certain extent.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a safety device of a photovoltaic power generation AC grid-connected box of the invention;

FIG. 2 is a schematic view of the lifting assembly shown in FIG. 1;

FIG. 3 is a schematic view of the elastic clamping assembly of FIG. 1;

FIG. 4 is a schematic view of the rotary aperture assembly of FIG. 1;

FIG. 5 is a schematic view of the linkage assembly shown in FIG. 1;

FIG. 6 is a schematic view of the clamping assembly of FIG. 1;

FIG. 7 is a schematic view of the screwing assembly of FIG. 1;

fig. 8 is a schematic structural diagram of the plug-in assembly in fig. 1.

The reference numbers in the figures illustrate:

1. an insulating protection box; 2. and a net cage; 3. a lifting assembly; 301. a slide hole; 302. a guide bar; 303. damping telescopic rods; 4. an elastic clamping assembly; 401. an upper hole; 402. a piston A; 403. connecting a column A; 404. a spring A; 405. a side hole; 406. a piston B; 407. connecting a column B; 408. connecting holes; 409. a rubber collet; 5. rotating the opening assembly; 501. a volute spiral spring; 502. a rotating rod; 503. a base plate; 6. a linkage assembly; 601. a rotating shaft; 602. a pulley set; 603. a gear; 604. a rack; 7. a clamping assembly; 701. rotating the disc; 702. a bayonet; 703. a side end box; 704. a slider; 705. a spring B; 706. clamping the column; 8. screwing the component; 801. a through groove; 802. a rotating shaft; 803. a torsion spring; 804. an elliptical disk; 805. twisting a handle; 9. a plug-in assembly; 901. an inner bore; 902. inserting a column; 903. a collar; 904. a spring C; 905. and (7) inserting the jack.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The invention is described in further detail below with reference to the attached drawing figures:

as shown in fig. 1, the present invention provides a safety device for a photovoltaic power generation ac grid-connected box, including: the device comprises an insulation protection box 1, a grid-connected box 2, a lifting assembly 3, an elastic clamping assembly 4, a rotary opening assembly 5, a linkage assembly 6, a clamping assembly 7, a screwing assembly 8 and an inserting assembly 9; wherein the content of the first and second substances,

the insulating protection box 1 is of a box body structure with the top, the periphery closed and the bottom opened, and the net box 2 is arranged in the insulating protection box 1 in a sliding manner up and down through the lifting assembly 3; an elastic clamping component 4 is arranged between the insulating protection box 1 and the top of the grid-connected box 2 and is used for realizing multi-point clamping on the grid-connected box 2 from the upper part and two sides when the grid-connected box 2 moves upwards and removing the multi-point clamping on the grid-connected box 2 when the grid-connected box 2 moves downwards; the bottom opening of the insulation protection box 1 is provided with a rotary opening component 5 for rotatably opening and closing the bottom opening of the insulation protection box 1; the insulation protection box 1 is provided with a linkage assembly 6, the rotary opening assembly 5 is connected with the net cage 2 through the linkage assembly 6, and the rotary opening assembly 5 is used for driving the rotation of the rotary opening assembly 5 to lift the net cage 2; the insulation protection box 1 is provided with a clamping component 7, and the clamping component 7 is used for clamping the linkage component 6 when the opening component 5 is rotated to open the bottom opening of the insulation protection box 1; the screwing component 8 is arranged on the rotating opening component 5, and the inserting component 9 is arranged on one side of the screwing component 8 and is positioned in the rotating opening component 5; the rotary opening assembly 5 is plugged on the insulation protection box 1 through the plugging assembly 9, and the plugging assembly 9 is unlocked through the screwing assembly 8.

Specifically, the method comprises the following steps:

as shown in fig. 2, the lifting assembly 3 of the present invention includes a sliding hole 301, a guide rod 302 and a damping telescopic rod 303, the sliding hole 301 is formed through the inside of the grid-connected box 2, the guide rod 302 is fixedly installed on the lower surface of the top of the insulating protection box 1, and the guide rod 302 is slidably inserted into the sliding hole 301, so that the grid-connected box 2 can slide up and down on the guide rod 302; and the damping telescopic rods 303 are symmetrically and fixedly installed on the upper surface of the net cage 2 at the two sides of the guide rod 302, and the end parts of the damping telescopic rods 303 are fixedly connected with the lower surface of the top of the insulation protection box 1. At normal during operation to box with a net 2 can be accomodate in the inside of insulating protection box 1, and damping telescopic link 303 has certain damping effect, has guaranteed the steady removal of case 2 that is incorporated into the power networks.

As shown in fig. 3, the elastic clamping assembly 4 of the present invention includes an upper hole 401, a piston a402, a connection column a403, a spring a404, a side hole 405, a piston B406, a connection column B407, a connection hole 408 and a rubber collet 409, wherein the upper surface of the top of the insulating protection box 1 is located above the net cage 2 and is provided with the upper hole 401, the piston a402 is slidably installed inside the upper hole 401, the connection column a403 is slidably inserted inside the upper hole 401, the upper end surface of the connection column a403 is fixedly connected with the lower surface of the piston a402, the spring a404 is sleeved on the outer surface of the connection column a403, and the connection column a403 is elastically connected with the upper wall of the insulating protection box 1 through the spring a 404; lateral holes 405 are symmetrically formed in two sides of the inner wall of the insulating protection box 1, which are located on the grid connection box 2, connecting holes 408 are symmetrically formed in two sides of the upper hole 401, the upper hole 401 is communicated and connected with the lateral holes 405 through the connecting holes 408, pistons B406 are slidably mounted inside the lateral holes 405, a connecting column B407 is slidably inserted inside the lateral holes 405, the end surface of the connecting column B407 is fixedly connected with the side surface of the piston B406, and rubber chucks 409 are fixedly mounted at the end portions of the connecting column A403 and the connecting column B407. The upper surface of the net cage 2 is in contact with and extrudes the rubber chuck 409, the grid-connected box 2 extrudes the rubber chuck 409 and pushes the connecting column A403 to move upwards, at the moment, the spring A404 is elastically compressed, the piston A402 moves upwards along the side wall of the upper hole 401, through the change of air pressure, the connecting column B407 slides inwards along the side wall of the side hole 405, so that the connecting column B407 is pushed to move, the rubber chuck 409 is in contact with and extrudes the side surface of the grid-connected box 2, when strong vibration is received, the whole net cage 2 slightly shakes, and under the action of the air pressure in the connecting hole 408, the rubber chuck 409 can well elastically clamp the net cage 2, and the internal elements of the net cage 2 are effectively prevented from being damaged due to vibration.

As shown in fig. 4, the rotary opening assembly 5 of the present invention includes a spiral spring 501, a rotary rod 502 and a bottom plate 503, the spiral spring 501 is symmetrically sleeved on the inner wall of the lower end of the insulating protection box 1 near the rear position of the insulating protection box 1, the rotary rod 502 is inserted between the spiral springs 501, the rotary rod 502 is elastically connected with the sidewall of the insulating protection box 1 through the spiral spring 501, and the bottom plate 503 is fixedly sleeved on the outer surface of the rotary rod 502 at the lower port position of the insulating protection box 1. The bottom plate 503 is rotated downwards, at this time, the rotating rod 502 rotates along with the rotating rod, the volute spiral springs 501 at the two ends are elastically wound, and the opening and closing functions of the lower port of the insulation protection box 1 are effectively realized.

As shown in fig. 5, the linkage assembly 6 of the present invention includes a rotation shaft 601, a pulley set 602, a gear 603 and a rack 604, the rotation shaft 601 is rotatably inserted between the side walls of the insulation protection box 1 at a position above the rotation rod 502, the pulley set 602 is disposed between the rotation rod 502 and the end portion of the rotation shaft 601 in a transmission manner, the rotation shaft 601 is connected with the rotation rod 502 in a transmission manner through the pulley set 602, the gear 603 is fixedly sleeved at the middle position of the outer surface of the rotation shaft 601, the rack 604 is fixedly mounted at a position corresponding to the gear 603 on the rear side surface of the grid connection box 2, and the rack 604 is connected with the gear 603 in a meshing manner. Through the transmission effect of pulley assembly 602, pivot 601 can rotate along with bull stick 502 to pivot 601 drives gear 603 and rotates, through the meshing transmission effect of gear 603 and rack 604, can be fine realize and box with a net 2 reciprocate the function.

As shown in fig. 6, the clamping assembly 7 of the present invention includes a rotating disc 701, a bayonet 702, a side end box 703, a sliding block 704, a spring B705 and a clamping column 706, the rotating disc 701 is fixedly sleeved at one side end of the rotating shaft 601, the bayonet 702 is disposed on the outer surface of the rotating disc 701, the side end box 703 is fixedly installed on the side surface of the insulating protection box 1 above the rotating disc 701, the sliding block 704 is slidably installed inside the side end box 703, the spring B705 is installed between the upper surface of the sliding block 704 and the inner wall of the side end box 703, the sliding block 704 is elastically connected with the side end box 703 through the spring B705, the clamping column 706 is fixedly installed on the lower surface of the sliding block 704, and the end of the clamping column 706 extends to the outside of the side end box 703 and is correspondingly clamped and matched with the bayonet 702. When bottom plate 503 rotates to vertical state, under the elastic action of spring B705, sliding block 704 drives card post 706 and moves down, inside card post 706 tip card income bayonet 702, keep the open mode with insulating protection box 1 lower port, when will and box with a net 2 accomodate and place, through pulling bottom plate 503 to one side, bayonet 702 inner wall extrusion card post 706 tip, overcome spring B705's elasticity, card post 706 drives sliding block 704 and shifts up, card post 706 tip follows bayonet 702 port portion roll-off, can effectively guarantee the stability of bottom plate 503 when the open mode.

As shown in fig. 7, the screwing assembly 8 of the present invention includes a through groove 801, a rotation shaft 802, torsion springs 803, an elliptical disk 804 and a twisting handle 805, the through groove 801 is formed in the middle position of the bottom surface of the bottom plate 503, the torsion springs 803 are symmetrically and fixedly mounted on the surface of the side wall of the through groove 801, the rotation shaft 802 is fixedly inserted between the torsion springs 803, the rotation shaft 802 is elastically connected with the side wall of the through groove 801 through the torsion springs 803, the elliptical disk 804 is fixedly sleeved on the outer surface of the rotation shaft 802, and the twisting handle 805 is fixedly mounted on the lower surface of the elliptical disk 804. The twisting handle 805 is pulled to drive the elliptical disk 804 to rotate, the rotating shaft 802 rotates along with the elliptical disk 804, the torsion spring 803 is elastically stressed at the moment, and after the twisting handle 805 is loosened, the rotating shaft 802 drives the elliptical disk 804 to well complete the rotating effect under the elastic resetting action of the torsion spring 803.

As shown in fig. 8, the plug-in component 9 of the present invention includes an inner hole 901, a plug column 902, a collar 903, a spring C904 and a plug hole 905, the inner hole 901 is formed on the upper surface of the bottom plate 503 at a position between the side wall of the insulating protection box 1 and the through groove 801, the plug column 902 is slidably inserted into the inner hole 901, the collar 903 is fixedly sleeved on the outer surface of the plug column 902 near the middle position, the spring C904 is sleeved on the outer surface of the plug column 902 between the collar 903 and the side wall of the inner hole 901, the plug column 902 is elastically connected to the inner hole 901 through the spring C904, the plug hole 905 is formed on the side surface of the insulating protection box 1 at a position corresponding to the end of the plug column 902, the end of the plug column 902 is in plug-in fit with the plug hole 905, the other end of the plug column 902 abuts against the elliptical disk 804, and the plug column 902 is plugged in or separated from the plug hole 905 under the effect of the elliptical disk 804. The twisting handle 805 is pulled downwards, when the bottom plate 503 moves to a horizontal state, the twisting handle 805 is loosened, under the elastic reset action of the torsion spring 803, the rotating shaft 802 drives the elliptical disc 804 to rotate, the protruding part of the elliptical disc 804 extrudes the inserting column 902 to slide outwards along the inner hole 901, the spring C904 is elastically compressed, and finally the end part of the inserting column 902 is inserted into the inserting hole 905, so that the inserting and fixing functions are well realized.

The using method of the invention comprises the following steps:

the net cage 2 can slide up and down in the insulation protection box 1 along the guide rod 302, and the net cage 2 can be accommodated in the insulation protection box 1 during normal work; when the maintenance or closing of the net cage 2 is carried out, the torsion handle 805 is pulled downwards to drive the elliptic disc 804 to rotate, the rotating shaft 802 rotates along with the elliptic disc 804, at the moment, the torsion spring 803 is elastically stressed, the inserting column 902 is separated from the elliptic disc 804 due to the position change of the elliptic disc 804, the inserting column 902 is driven to slide out from the inserting hole 905 under the elastic action of the spring C904, then the bottom plate 503 is rotated downwards, the rotating rod 502 rotates along with the rotating rod 502, the volute springs 501 at the two ends are elastically wound, the rotating shaft 601 can be driven to rotate through the transmission action of the pulley set 602, the gear 603 rotates along with the rotating shaft 601, the rack 604 slides downwards along the guide rod 302 through the meshing transmission action of the gear 603 and the rack 604, and gradually extends out from the lower port of the insulation protection box 1, in the process that the bottom plate 503 rotates from the horizontal state to the vertical state, the end of the clamping column 706 is contacted with and pressed against the surface 701 of the rotating disc 701, and spring B705 is in the elastic compression state, when bottom plate 503 rotates to vertical state, under the elastic action of spring B705, sliding block 704 drives card post 706 to move downwards, and inside bayonet 702 was gone into to card post 706 tip card, kept open state with insulating protection box 1 lower port.

When the grid-connected box 2 is stored and placed, the bottom plate 503 is pulled to one side, the inner wall of the bayonet 702 extrudes the end part of the clamping column 706 to overcome the elastic force of the spring B705, the clamping column 706 drives the sliding block 704 to move upwards, the end part of the clamping column 706 slides out of the port part of the bayonet 702, the bottom plate 503 is driven to integrally and automatically rotate towards the horizontal state under the elastic resetting action of the spiral spring 501, at the moment, the gear 603 is driven to rotate through the transmission action of the belt pulley set 602, the gear 603 is driven to rotate through the meshing transmission action of the gear 603 and the rack 604, the grid-connected box 2 is driven to move upwards along the guide rod 302, at the moment, the damping telescopic rod 303 slowly retracts to play a certain damping effect, the stable movement of the grid-connected box 2 is ensured, when the upper surface of the grid-connected box 2 is gradually contacted and extruded with the rubber chuck 409, the grid-connected box 2 extrudes the rubber chuck 409 and pushes the connecting column A403 to move upwards, at the moment, the spring A404 is elastically compressed, the piston a402 will move up the side wall of the upper bore 401, and by the change in air pressure, the connecting post B407 will slide inboard along the side wall of the side bore 405, thereby advancing the connecting column B407 to move so that the rubber clamp 409 contacts and presses the side surface of the grid-connected box 2, when strong vibration is applied, the whole net cage 2 slightly shakes, the rubber chuck 409 can elastically clamp the net cage 2 well under the action of gas pressure in the connecting hole 408, so as to effectively prevent the internal elements of the net cage 2 from being damaged due to vibration, then the twisting handle 805 is downwards pulled, when the bottom plate 503 moves to the horizontal state, the twisting handle 805 is loosened, under the elastic reset effect of torsion spring 803, drive oval dish 804 through axis of rotation 802 and rotate, oval dish 804 protruding portion will extrude to insert post 902 along hole 901 lateral sliding, spring C904 elastic compression this moment, and the final post 902 end of inserting will insert inside jack 905 to reach the fixed effect of pegging graft.

The invention has the advantages that:

1. according to the invention, the grid-connected box is slidably accommodated in the insulating protection box through the linkage effect among the rotary opening component, the linkage component and the clamping component, so that the grid-connected box is prevented from being directly exposed and installed outside, rainwater and dust are effectively prevented from entering the inside of the grid-connected box, the phenomenon of short circuit or circuit aging of the grid-connected box is avoided, and the occurrence of power utilization safety accidents is reduced to a certain extent;

2. the structure matching of the screwing component and the inserting component is convenient for opening and closing the bottom plate, and the net cage is convenient to maintain or replace, so that the operation is simple and convenient, and time and labor are saved;

3. according to the invention, by arranging the elastic clamping assembly and the lifting assembly, the problem that the internal elements of the grid-connected box are damaged due to strong vibration in the prior art is effectively solved; meanwhile, under the action of gas pressure in the connecting holes in the device, the rubber chucks can elastically clamp the grid-connected box well, so that internal elements of the net cage are effectively prevented from being damaged due to vibration, and the integral practical service life of the grid-connected box is prolonged to a certain extent.

The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a photovoltaic power generation exchanges and is incorporated into power networks case safety device which characterized in that includes: the insulation protection box and the grid-connected box;

the net combining box is arranged in the insulation protection box in a vertically sliding mode through the lifting assembly;

an elastic clamping assembly is arranged between the insulating protection box and the top of the grid-connected box and is used for realizing multi-point clamping of the grid-connected box from the upper part and two sides when the grid-connected box moves upwards;

the bottom opening of the insulation protection box is provided with a rotary opening component for rotatably opening and closing the bottom opening of the insulation protection box;

the insulation protection box is provided with a linkage assembly, the rotating opening assembly is connected with the grid-connected box through the linkage assembly and is used for driving the grid-connected box to lift through the rotation of the rotating opening assembly;

the insulation protection box is provided with a clamping assembly, and the clamping assembly is clamped with the linkage assembly when the opening assembly is rotated to open the bottom opening of the insulation protection box.

2. The pv grid tie safety device of claim 1, wherein the elevator assembly comprises: the damping telescopic rods are symmetrically arranged on two sides of the guide rod;

the guide rod is vertically arranged at the bottom of the top plate of the insulation protection box and is slidably inserted into the sliding hole of the combined net box;

one end of the damping telescopic rod is installed at the bottom of the top plate of the insulation protection box, and the other end of the damping telescopic rod is installed at the top of the combined net box.

3. The pv grid connection box safety device of claim 1, wherein the resilient clamping assembly comprises: the piston comprises an upper hole, a piston A, a connecting column A, a spring A, a side hole, a piston B, a connecting column B and a connecting hole;

the top plate of the insulation protection box is provided with the upper hole, two side plates of the insulation protection box are provided with symmetrical side holes, and the upper hole is communicated with the side holes through the connecting holes;

the piston A and the connecting column A which are connected are arranged in the upper hole in a sliding mode, and a spring A for providing compression reset is sleeved on the connecting column A;

and each side hole is internally provided with a piston B and a connecting column B in a sliding manner, and the connecting column B is sleeved with a spring A for providing compression reset.

4. The photovoltaic power generation AC grid-connected box safety device according to claim 3, wherein rubber chucks are fixedly installed at the ends of the connecting column A and the connecting column B.

5. The pv grid tie box safety device of claim 1, wherein the rotary opening assembly comprises: a volute spiral spring, a rotating rod and a bottom plate;

the rotating rod is horizontally arranged at the lower ends of two side plates of the insulation protection box, the rotating rod is elastically connected with the two side plates of the insulation protection box through the volute spiral spring, and the outer surface of the rotating rod is positioned at the lower port of the insulation protection box and fixedly sleeved on the bottom plate.

6. The photovoltaic power generation grid-connected box safety device according to claim 5, wherein the linkage assembly comprises: the device comprises a rotating shaft, a belt pulley group, a gear and a rack;

the rotating shaft is horizontally inserted between the two side plates of the insulation protection box in a rotating mode and is positioned above the rotating rod; the rotating shaft is in transmission connection with the rotating rod through the belt pulley group, the gear is fixedly sleeved on the rotating shaft, and the rack meshed with the gear is arranged on the rear side surface of the net cage.

7. The pv grid connection box safety device of claim 6, wherein the latch assembly comprises: the device comprises a rotating disc, a bayonet, a side end box, a sliding block, a spring B and a clamping column;

the rotating disc is fixedly sleeved at one end part of the rotating shaft, and the bayonet is formed in the outer surface of the rotating disc; the side surface of the insulation protection box is positioned above the rotating disc and is fixedly provided with the side end box, the sliding block is arranged in the side end box in a sliding manner, and the spring B is arranged between the upper surface of the sliding block and the inner wall of the side end box; sliding block lower fixed surface installation the card post, just card post tip extends the side box outside with the bayonet socket corresponds the joint cooperation.

8. The pv grid-connected box safety device of claim 5, further comprising: screwing the assembly and the inserting assembly;

the screwing component is arranged on the rotating opening component, and the inserting component is arranged on one side of the screwing component and is positioned in the rotating opening component; the rotary opening assembly is inserted into the insulation protection box through the insertion assembly, and the insertion assembly is unlocked through the screwing assembly.

9. The pv grid tie box safety device of claim 8, wherein the twist assembly comprises: the torsion spring is arranged on the through groove;

the bottom surface of the bottom plate is provided with the through groove at the middle position, the rotating shaft is horizontally arranged between the surfaces of the side walls of the through groove, and the rotating shaft is elastically connected with the side walls of the through groove through a torsion spring; the outer surface of the rotating shaft is fixedly sleeved with the oval disc, and the lower surface of the oval disc is fixedly provided with the torsion handle.

10. The pv grid tie box safety device of claim 9, wherein the plug assembly comprises: the plug comprises an inner hole, a plug post, a spring C and a jack;

the upper surface of the bottom plate is provided with the inner hole at a position between the side wall of the insulation protection box and the through groove, the inner part of the inner hole is inserted with the inserting column in a sliding manner, and the inserting column is sleeved with a spring C for providing compression reset; the side surface of the insulation protection box is provided with a jack corresponding to one end of the inserting column, the other end of the inserting column is abutted against the oval disc, and the inserting column is inserted into or separated from the jack under the action of the oval disc.

Images