A photovoltaic grid-connected access box that is easy to install

Abstract

The present invention belongs to the technical field of photovoltaic grid-connected access boxes, and relates to a photovoltaic grid-connected access box that is easy to install, including a grid-connected box, a placement rack is arranged at the bottom of the grid-connected box, two mounting racks are rotatably arranged on both sides of the placement rack, and both mounting racks are provided with a fixing mechanism capable of fixing the mounting rack on two connecting rods, and the fixing mechanism includes a fixing plate, a first arc-shaped clamp, a second arc-shaped clamp, two pushing components for pushing the first arc-shaped clamp and the second arc-shaped clamp to close and clamp, two locking components for locking the connection between the mounting rack and the placement rack, and a driving component for driving the pushing component and the locking component to rotate. The present invention can hoist the grid-connected box after fixing it on the ground through the setting of the fixing mechanism, and install and fix it with the electric pole when it is lifted to a high altitude at a suitable position, so that the staff no longer need to climb to the high altitude for operation, and the safety can be improved while the installation can be carried out quickly, thereby improving the installation efficiency of the grid-connected box.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic grid-connected access boxes, and in particular to a photovoltaic grid-connected access box which is easy to install. Background Art

[0002] Photovoltaic is the abbreviation of solar photovoltaic power generation system. It is a new type of power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy. It has two modes of operation: independent operation and grid-connected operation. Grid connection refers to the transmission line of the generator set being connected to the transmission network and starting to transmit electricity. In the solar photovoltaic power generation system, in order to reduce the connection between the solar photovoltaic cell array and the inverter, a photovoltaic grid-connected access box is added to achieve grid connection with the city power. The traditional grid-connected box is installed by installing a bracket on two poles and then fixing the grid-connected box on the bracket. However, due to the large size of the grid-connected box and the need for multiple workers to install it at high altitude, it is difficult to install and requires the cooperation of multiple people to install it.

[0003] The Chinese invention patent with announcement number CN209029926U discloses a photovoltaic grid-connected access box, including a shell, a rain cover, a door cover, a dust cover, a connecting plate, a mounting plate, a mounting port, a threaded groove, a fixing plate, a first arc clamping plate, a second arc clamping plate, a fastening screw, a fastening screw hole, a groove, a guide rail, a pulley, a connecting shaft, a sealing plate, a fastening plate, a slider, a slide groove, a fixing nut and a fastening knob. A rain cover is installed on the top of the shell, and dust covers are provided at both ends of the shell. One side of the shell is movably connected with the door cover through a hinge, and a connecting plate is connected to the inner wall of the shell. A mounting plate is installed on the upper end of the connecting plate. A mounting port is opened inside the mounting plate, and threaded grooves are opened on the inner walls on both sides of the mounting port. A fixing plate is provided on the outer wall of the other side of the shell, and one end of the fixing plate is connected with the first arc clamping plate. The utility model has the characteristics of easy installation and maintenance and detection.

[0004] However, the above patent still has some shortcomings: although the patent can clamp and fix the installation column through the first arc clamp and the second arc clamp, since the existing grid-connected boxes are usually installed at high altitudes, the patent also requires workers to move the grid-connected boxes to high altitudes during installation, and then install them through the first arc clamp and the second arc clamp, which is not only time-consuming and labor-intensive, but also has poor installation efficiency. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in order to solve the problem that the existing grid-connected boxes are inconvenient to install at high altitudes, the present invention provides an easy-to-install photovoltaic grid-connected access box to solve the above problem.

[0006] The present invention provides a photovoltaic grid-connected access box that is easy to install, including a grid-connected box, a placement rack is arranged at the bottom of the grid-connected box, two mounting racks are rotatably arranged on both sides of the placement rack, and a fixing mechanism capable of fixing the mounting rack on two connecting rods is arranged on the two mounting racks, the fixing mechanism includes a fixing plate, a first arc clamp, a second arc clamp, two pushing components for pushing the first arc clamp and the second arc clamp to close and clamp, two locking components for locking the connection between the mounting rack and the placement rack, and a driving component for driving the pushing component and the locking component to rotate, the fixing plate is arranged on the mounting rack, the first arc clamp and the second arc clamp are symmetrically arranged at the rear end of the mounting rack, the driving component is installed on the fixing plate, the pushing component and the locking component are symmetrically arranged in the mounting groove, and are transmission-connected with the driving component, a plurality of mounting grooves are opened on the inner walls on both sides of the two mounting racks, the first arc clamp and the second arc clamp 43 are slidably connected to the two mounting grooves on both sides, and an installation mechanism for installing and repairing electrical components is arranged inside the grid-connected box.

[0007] In some embodiments, the pushing assembly includes a first fixed block, a first rotating cylinder, a rotating screw and a first steering gear, wherein the first fixed block is located in the mounting groove at one end close to the fixed plate, the first rotating cylinder is rotatably arranged inside the first fixed block, one end of the rotating screw is rotatably connected to the first arc clamp through a rotating shaft, the other end of the rotating screw is threadedly connected to the inside of the first rotating cylinder, and the first steering gear is fixedly connected to the head end of the first rotating cylinder.

[0008] In some embodiments, the locking assembly includes a second fixed block, a second rotating cylinder, a locking rod and a second steering gear, the second fixed block is fixed in the installation groove at one end close to the placement frame, the second rotating cylinder is rotatably arranged in the second fixed block, the locking rod is threadedly connected to the inside of the second rotating cylinder, and the second steering gear is arranged at the head end of the second rotating cylinder, and all the installation grooves are provided with two limiting members for limiting the locking rod and the rotating screw, and the two limiting members are respectively slidably connected to the locking rod and the rotating screw.

[0009] In some embodiments, the drive assembly includes a dual-drive motor and two bevel gears. The dual-drive motor is mounted on a fixed plate. The two bevel gears are fixedly connected to the two output shafts of the dual-drive motor, and the bevel gears are respectively meshed with the first steering gear and the second steering gear.

[0010] In some embodiments, movable grooves for accommodating two mounting frames are provided at the four corners of the placement rack, locking bolts are inserted into all the movable grooves, all the locking bolts pass through the two mounting frames respectively, and are respectively threadedly connected to the thread grooves and all the mounting frames, and through grooves for inserting locking rods are provided inside all the locking bolts.

[0011] In some embodiments, two mounting bolts are threadedly connected to both ends of the two mounting brackets, and all the mounting bolts pass through the second arc-shaped clamp and are threadedly connected to the second arc-shaped clamp.

[0012] In some embodiments, the placement rack is provided with a placement slot for accommodating the grid-connected box, two limiting slot plates are symmetrically arranged at one end of the top of the placement rack, two clamping rods symmetrically arranged on the back of the grid-connected box are slidably connected to the limiting slot plates, and two cross-arranged reinforcing ribs are arranged between the two limiting slot plates.

[0013] In some embodiments, the mounting mechanism includes two mounting parts arranged in parallel inside the grid-connected box, the mounting parts include two guide sliders and a mounting plate, the mounting plate is located between the two guide sliders and is slidably connected to the two guide sliders, guide grooves are provided inside the two guide sliders, guide balls are fixed at the head ends on both sides of the mounting plate, the two guide balls are respectively slidably connected to the two guide grooves, and a baffle is provided on the rear end of the mounting plate.

[0014] In some embodiments, the mounting plate is provided with grooves on both sides close to the baffle, and a clamping sleeve is slidably connected in the groove. A spring is fixedly connected between the clamping sleeve and the groove. Two sockets are provided on both sides of the grid-connected box, and mounting screw sleeves are inserted in the sockets, and the mounting screw sleeves are threadedly connected to the clamping sleeve.

[0015] In some embodiments, both of the fixing plates are fixedly connected with hanging rings for hoisting the mounting frame to high altitudes, and pulleys are provided at the four corners of the bottom of the placement frame.

[0016] The beneficial effects of the present invention are:

[0017] Firstly, the photovoltaic grid-connected access box of the present invention is easy to install. By arranging a placing frame and two rotatably arranged mounting frames, it is easy to store the mounting frames and reduce the occupied space. The pulley arranged at the bottom thereof can facilitate the transportation and installation of the grid-connected box, thereby improving the practicality.

[0018] Secondly, the photovoltaic grid-connected access box of the present invention is easy to install. Through the setting of a fixing mechanism, the grid-connected box can be fixed on the ground and then hoisted, and when the mounting frame is raised to a high altitude at a suitable position, it can be installed and fixed to the electric pole. Compared with the existing grid-connected box installation, the workers no longer need to climb to high altitudes for work, which improves safety and can be installed quickly, thereby improving the installation efficiency of the grid-connected box and making it convenient and quick.

[0019] Thirdly, the photovoltaic grid-connected access box of the present invention is easy to install. Through the setting of the locking component, it can drive the locking rod inside it to move to the locking bolt and insert it into the through groove, so as to lock the locking bolt to improve the stability of the connection between the placement frame and the installation frame, and prevent the locking bolt from loosening and causing the placement frame to fall.

[0020] Fourthly, the photovoltaic grid-connected access box of the present invention is easy to install. Through the setting of the installation mechanism, it is convenient for workers to install and repair the electrical components inside the grid-connected box, avoiding the maintenance personnel's hands from being inserted into the box for a long time when working at high altitudes, thereby facilitating maintenance and inspection while also improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure from a first viewing angle of the present invention;

[0023] Figure 2 is a schematic diagram of a second viewing angle stereoscopic structure of the present invention;

[0024] Figure 3 is a partial cross-sectional schematic diagram of the fixing mechanism;

[0025] Figure 4 for Figure 3 A magnified view of the structure at A;

[0026] Figure 5 It is a schematic diagram of the local structure of the mounting frame;

[0027] Figure 6 It is a schematic diagram of the local structure of the placement rack;

[0028] Figure 7 A bottom view of the placement rack;

[0029] Figure 8 It is a schematic diagram of the internal structure of the grid-connected box;

[0030] Fig. 9 It is a schematic diagram of the split structure of the installation part;

[0031] Fig.10 This is a top view of the structural section of the grid-connected box.

[0032] Figure numerals: 1, grid-connected box; 2, placement frame; 21, movable slot; 22, locking bolt; 221, through slot; 23, placement slot; 24, limit slot plate; 25, clamping rod; 26, reinforcing rib; 27, pulley; 3, mounting frame; 31, mounting slot; 32, limiter; 33, mounting bolt; 4, fixing mechanism; 41, fixing plate; 411, hanging ring; 42, first arc clamp; 43, second arc clamp; 44, pushing assembly; 441, first fixing block; 442, first rotating drum; 443, rotating screw ;444, first steering gear;45, locking assembly;451, second fixed block;452, second rotating drum;453, locking rod;454, second steering gear;46, driving assembly;461, dual-drive motor;462, bevel gear;5, mounting mechanism;51, mounting part;511, guide slider;512, mounting plate;513, guide groove;514, guide ball;515, baffle;516, groove;517, ferrule;518, spring;519, socket;520, mounting screw sleeve. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0034] In this embodiment, if Figures 1 to 10 As shown, a photovoltaic grid-connected access box that is easy to install includes a grid-connected box 1, a placement frame 2 is arranged at the bottom of the grid-connected box 1, two mounting frames 3 are rotatably arranged on both sides of the placement frame 2, and the two mounting frames 3 are each provided with a fixing mechanism 4 that can fix the mounting frame 3 on two connecting rods, and movable grooves 21 for accommodating the two mounting frames 3 are opened at the four corners of the placement frame 2, and locking bolts 22 are inserted inside all the movable grooves 21, and all the locking bolts 22 respectively penetrate the two mounting frames 3, and are respectively threadedly connected with the thread groove and all the mounting frames 3, and before installation, the mounting frame 3 is fixed inside the movable grooves 21 at the four corners of the placement frame 2 by the locking bolts 22, and the mounting frame 3 can be rotated inside it, so that the mounting frame 3 can be rotated and folded for storage, reducing the occupied space, and pulleys 27 are arranged at the four corners of the bottom of the placement frame 2, and the setting of the pulleys 27 can facilitate the transportation and installation of the grid-connected box 1, thereby improving practicality;

[0035] The fixing mechanism 4 includes a fixing plate 41, a first arc-shaped clamp 42, a second arc-shaped clamp 43, two pushing components 44 for pushing the first arc-shaped clamp 42 and the second arc-shaped clamp 43 to close and clamp, two locking components 45 for locking the connection between the mounting frame 3 and the placement frame 2, and a driving component 46 for driving the pushing component 44 and the locking component 45 to rotate. The fixing plate 41 is arranged on the mounting frame 3, and the two fixing plates 41 are fixedly connected with a hanging ring 411 for hoisting the mounting frame 3 to a high altitude. Two mounting bolts 33 are threadedly connected at both ends of the two mounting frames 3, and all the mounting bolts 33 pass through the second arc-shaped clamp 43 and are threadedly connected to the second arc-shaped clamp 43. A placement groove 23 for accommodating the grid-connected box 1 is provided on the placement frame 2, and two limiting slot plates 24 are symmetrically arranged at one end of the top of the placement frame 2, and two clamping rods 2 slidably connected to the limiting slot plates 24 are symmetrically arranged on the back of the grid-connected box 1. 5. Two cross-arranged reinforcing ribs 26 are arranged between the two limit slot plates 24 to improve the stability between the two limit slot plates 24. Since the height of the limit slot plate 24 is two-thirds of the height of the grid-connected box 1, when the clamping rod 25 is inserted into the limit slot plate 24, the grid-connected box 1 can be firmly fixed on its side wall, and cooperate with the arrangement of the placement slot 23 to prevent the grid-connected box 1 from shaking during installation. The first arc clamp 42 and the second arc clamp 43 are symmetrically arranged at the tail end of the mounting frame 3. The driving assembly 46 is installed on the fixing plate 41. The pushing assembly 44 and the locking assembly are symmetrically arranged in the mounting groove 31 and are transmission-connected with the driving assembly 46. A plurality of mounting grooves 31 are provided on the inner walls on both sides of the two mounting frames 3. Both sides of the first arc clamp 42 and the second arc clamp 43 are slidably connected to the two mounting grooves 31. An installation mechanism 5 for installing and repairing electrical components is arranged inside the grid-connected box 1.

[0036] When installing the grid-connected box 1, first unscrew the locking bolts 22 and the mounting bolts 33, then rotate the two mounting frames 3 to expand them to be parallel to the placement frame 2, and insert the first arc clamp 42 into the outside of the electric pole, and then push the second arc clamp 43 into the installation groove 31 and be located on the other side of the electric pole, and then fix the mounting frame 3 and the second arc clamp 43 respectively by the locking bolts 22 and the mounting bolts 33, and then the staff inserts the two clamping rods 25 on the back of the grid-connected box 1 into the limiting slot plate 24 to limit it and then places the grid-connected box 1 in the placement slot 23, so that the grid-connected box 1 is firmly fixed on the placement frame 2, and the staff The lifting rope is tied to the hanging ring 411 to lift it. When the mounting frame 3 is moved to a suitable height, the driving assembly 46 drives the pushing assembly 44 to move, thereby pushing the first arc clamp 42 to the second arc clamp 43 to clamp and fix the electric pole. From the above structure, it can be known that the present invention can lift the grid-connected box 1 after fixing it on the ground, and install and fix it to the electric pole when the mounting frame 3 is raised to a suitable height in the air. Compared with the existing grid-connected box 1 installation, the staff no longer need to climb to a high altitude to work, which improves safety and can be installed quickly, thereby improving the installation efficiency of the grid-connected box 1 and making it convenient and quick.

[0037] The pushing assembly 44 includes a first fixed block 441, a first rotating drum 442, a rotating screw 443 and a first steering gear 444. The first fixed block 441 is located in the mounting groove 31 at one end close to the fixed plate 41. The first rotating drum 442 is rotatably arranged inside the first fixed block 441. One end of the rotating screw 443 is rotatably connected to the first arc-shaped clamp 42 through a rotating shaft. The other end of the rotating screw 443 is threadedly connected to the inside of the first rotating drum 442. The first steering gear 444 is fixedly connected to the head end of the first rotating drum 442. The driving assembly 46 drives the pushing assembly 44 to move. The driving assembly 46 includes a dual-drive motor 461 and two bevel gears 462. The dual-drive motor 461 is installed on the fixed plate 41. The two bevel gears 462 are fixedly connected to the two output shafts of the dual-drive motor 461 respectively. The bevel gears 462 are respectively meshed with the first steering gear 444 and the second steering gear 454. When the mounting frame 3 rises to a high altitude mounting position, the mounting frame 3 is moved. When the mounting position is reached, the dual-drive motor 461 is started, and the output shaft of the dual-drive motor 461 drives the bevel gear 462 to rotate, thereby rotating the first steering gear 444 meshing with the bevel gear 462, and the rotation of the first rotating gear drives the first rotating drum 442 to rotate inside the first fixed block 441, so that the rotating screw 443 inside it moves out, and when the rotating screw 443 moves, it can push the first arc clamp 42 to move to the second arc clamp 43, thereby clamping the electric pole between the two, thereby fixing the mounting frame 3 and its grid-connected box 1 on the outside of the electric pole. Compared with the traditional high-altitude installation of the grid-connected box 1, the present invention not only improves the safety performance and convenience of use, but also can be installed, fixed and adjusted according to its height, which is convenient for the staff to install and disassemble, and also improves the installation efficiency. Furthermore, in order to improve its stability effect, anti-skid pads can be added to the contact surfaces of the first arc clamp 42 and the second arc clamp 43 with the electric pole to improve the anti-skid effect.

[0038] Since the grid-connected box 1 has a certain weight and it will shake slightly in the air, in order to prevent the locking bolt 22 from loosening when the mounting frame 3 shakes, the locking assembly 45 includes a second fixed block 451, a second rotating cylinder 452, a locking rod 453 and a second steering gear 454. The second fixed block 451 is fixedly located in the mounting groove 31 at one end close to the placement frame 2, the second rotating cylinder 452 is rotatably arranged in the second fixed block 451, the locking rod 453 is threadedly connected to the inside of the second rotating cylinder 452, and the second steering gear 454 is arranged at the head end of the second rotating cylinder 452. All the locking bolts 22 are provided with a through slot 221 for the locking rod 453 to be inserted, and all the mounting grooves 31 are provided with There are two limit members 32 for limiting the locking rod 453 and the rotating screw 443. The two limit members 32 are slidably connected to the locking rod and the rotating screw 443 respectively. When the dual-drive motor 461 drives the bevel gear 462 to rotate, the second steering gear 454 rotates synchronously, thereby causing the second rotating cylinder 452 to rotate, and driving the locking rod 453 inside it to move to the locking bolt 22 and insert into the through groove 221, thereby locking the locking bolt 22 to improve the stability of the connection between the placement frame 2 and the mounting frame 3. Even if the placement frame 2 and the mounting frame 3 shake, it will not affect the fixing effect of the locking bolt 22, thereby avoiding bending of the placement frame 2, thereby improving the overall stability of the placement frame 2 after being connected to the mounting frame 3.

[0039] When the grid-connected box 1 is installed in the air, it is very inconvenient for the staff to reach into the box to repair the electrical components inside it. The installation mechanism 5 includes two installation parts 51 arranged in parallel inside the grid-connected box 1, and the installation part 51 includes two guide sliders 511 and a mounting plate 512. The mounting plate 512 is located between the two guide sliders 511 and is slidably connected to the two guide sliders 511. Guide grooves 513 are provided inside the two guide sliders 511. Guide balls 514 are fixed to the head ends of both sides of the installation plate 512. The two guide balls 514 are slidably connected to the two guide grooves 513 respectively. A baffle 515 is provided on the rear end of the installation plate 512. The installation plate 512 is provided with grooves 516 on both sides close to the baffle 515. A clamping sleeve 517 is slidably connected in the groove 516. A spring 518 is fixedly connected between the clamping sleeve 517 and the groove 516. Two jacks 519 are provided on both sides of the grid-connected box 1, and mounting screw sleeves 520 are inserted in the jacks 519, and the mounting screw sleeves 520 are threadedly connected with the clamping sleeve 517. When the staff repairs the electrical components inside the grid-connected box 1, they set up a ladder, then open the box door, and then rotate the mounting screw sleeve 520 to disengage the mounting screw sleeve 520 from the clamping sleeve 517. After the clamping sleeve 517 is disengaged, it is retracted into the groove 516 by the spring 518. At this time, the staff holds the baffle 515 and pulls out the mounting plate 512. At this time, the guide ball 514 slides along the guide groove 513 to near the box door, and the mounting plate 512 is rotated to 90 degrees. At this time, the electrical components can be pulled out to the outside for the staff to repair, so as to avoid the maintenance personnel from putting their hands into the box for a long time during high-altitude operations. When the maintenance is completed, it can be reset and the mounting plate 512 can be fixed, which makes the installation of components more concise and clear, and is convenient for maintenance and detection.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic grid-connected access box that is easy to install, comprising a grid-connected box (1), characterized in that: The grid-connected box (1) is provided with a placement frame (2) at the bottom, and two mounting frames (3) are rotatably provided on both sides of the placement frame (2). Both mounting frames (3) are provided with a fixing mechanism (4) capable of fixing the mounting frame (3) on two connecting rods, and the fixing mechanism (4) comprises a fixing plate (41), a first arc-shaped clamp (42), a second arc-shaped clamp (43), two pushing components (44) for pushing the first arc-shaped clamp (42) and the second arc-shaped clamp (43) to close and clamp, two locking components (45) for locking the connection between the mounting frame (3) and the placement frame (2), and a driving component (45) for driving the pushing component (44) and the locking component (45) to rotate. 46), the fixing plate (41) is arranged on the mounting frame (3), the first arc-shaped clamp (42) and the second arc-shaped clamp (43) are symmetrically arranged at the rear end of the mounting frame (3), the driving assembly (46) is mounted on the fixing plate (41), the pushing assembly (44) and the locking assembly are symmetrically arranged in the mounting groove (31), and are drivingly connected to the driving assembly (46), a plurality of mounting grooves (31) are formed on the inner walls of both sides of the two mounting frames (3), both sides of the first arc-shaped clamp (42) and the second arc-shaped clamp (43) are slidably connected to the two mounting grooves (31), and a mounting mechanism (5) for mounting and repairing electrical components is arranged inside the grid-connected box (1).

2. The photovoltaic grid-connected access box that is easy to install according to claim 1 is characterized in that: The pushing assembly (44) comprises a first fixed block (441), a first rotating cylinder (442), a rotating screw (443) and a first steering gear (444), wherein the first fixed block (441) is located in the mounting groove (31) at one end close to the fixed plate (41), the first rotating cylinder (442) is rotatably arranged inside the first fixed block (441), one end of the rotating screw (443) is rotatably connected to the first arc-shaped clamp (42) via a rotating shaft, the other end of the rotating screw (443) is threadedly connected to the inside of the first rotating cylinder (442), and the first steering gear (444) is fixedly connected to the head end of the first rotating cylinder (442).

3. The photovoltaic grid-connected access box that is easy to install according to claim 2 is characterized in that: The locking assembly (45) comprises a second fixed block (451), a second rotating cylinder (452), a locking rod (453) and a second steering gear (454); the second fixed block (451) is fixedly located in the mounting groove (31) at one end close to the placement rack (2); the second rotating cylinder (452) is rotatably arranged in the second fixed block (451); the locking rod (453) is threadedly connected to the inside of the second rotating cylinder (452); the second steering gear (454) is arranged at the head end of the second rotating cylinder (452); and all the mounting grooves (31) are provided with two limiting members (32) for limiting the locking rod (453) and the rotating screw (443); the two limiting members (32) are slidably connected to the locking rod and the rotating screw (443) respectively.

4. The photovoltaic grid-connected access box that is easy to install according to claim 3 is characterized in that: The driving assembly (46) comprises a dual-drive motor (461) and two bevel gears (462); the dual-drive motor (461) is mounted on a fixed plate (41); the two bevel gears (462) are respectively fixedly connected to two output shafts of the dual-drive motor (461); and the bevel gears (462) are respectively meshed with a first steering gear (444) and a second steering gear (454).

5. The photovoltaic grid-connected access box that is easy to install according to claim 1 is characterized in that: The four corners of the placement frame (2) are provided with movable grooves (21) for accommodating the two mounting frames (3), and locking bolts (22) are inserted into the inside of all the movable grooves (21). All the locking bolts (22) respectively penetrate the two mounting frames (3) and are respectively threadedly connected to the thread grooves and all the mounting frames (3), and all the locking bolts (22) are provided with through grooves (221) for inserting locking rods (453).

6. The photovoltaic grid-connected access box that is easy to install according to claim 1 is characterized in that: Two mounting bolts (33) are threadedly connected to both ends of the two mounting frames (3), and all the mounting bolts (33) pass through the second arc-shaped clamp (43) and are threadedly connected to the second arc-shaped clamp (43).

7. The photovoltaic grid-connected access box that is easy to install according to claim 1 is characterized in that: The placement rack (2) is provided with a placement slot (23) for accommodating the grid-connected box (1); two limit slot plates (24) are symmetrically arranged at one end of the top of the placement rack (2); two clamping rods (25) slidably connected to the limit slot plates (24) are symmetrically arranged on the back of the grid-connected box (1); and two cross-arranged reinforcing ribs (26) are arranged between the two limit slot plates (24).

8. The photovoltaic grid-connected access box that is easy to install according to claim 1 is characterized in that: The mounting mechanism (5) comprises two mounting parts (51) arranged in parallel inside the grid-connected box (1); the mounting part (51) comprises two guide sliders (511) and a mounting plate (512); the mounting plate (512) is located between the two guide sliders (511) and is slidably connected to the two guide sliders (511); guide grooves (513) are provided inside the two guide sliders (511); guide balls (514) are fixed to the head ends of both sides of the mounting plate (512); the two guide balls (514) are slidably connected to the two guide grooves (513) respectively; and a baffle (515) is provided on the rear end of the mounting plate (512).

9. The photovoltaic grid-connected access box that is easy to install according to claim 8 is characterized in that: The mounting plate (512) is provided with grooves (516) on both sides close to the baffle (515), and a clamping sleeve (517) is slidably connected in the groove (516), and a spring (518) is fixedly connected between the clamping sleeve (517) and the groove (516). Two insertion holes (519) are provided on both sides of the grid connection box (1), and a mounting screw sleeve (520) is inserted in the insertion hole (519), and the mounting screw sleeve (520) is threadedly connected to the clamping sleeve (517).

10. The photovoltaic grid-connected access box that is easy to install according to claim 1, characterized in that: The two fixing plates (41) are both fixedly connected with a hanging ring (411) for hoisting the mounting frame (3) to a high altitude, and pulleys (27) are provided at the four corners of the bottom of the placement frame (2).

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