Box-type transformer for on-load capacity-regulating charging pile

Abstract

The invention relates to the technical field of box-type transformers, in particular to an on-load capacity-regulating charging pile box-type transformer which comprises a box body, a heat dissipation structure, a sliding structure, a fixing structure, a limiting structure, a transformer body, a sliding-out structure and a control cabinet. The arrangement of the sliding structure facilitates the extraction of the transformer from the interior of the box body for a certain distance during the maintenance of the transformer, enlarges the operation space, improves the maintenance efficiency, the arrangement of the fixing structure facilitates the adjustment of the position of the transformer in the box body, achieves the rapid fixation of the transformer, avoids the repeated screwing and dismounting of bolts, and improves the maintenance efficiency. The sliding-out structure effectively solves the problem that the cabinet body is difficult to be plugged into the box body due to the narrow installation space or operation channel of the box body, the operation process is simplified, the flexibility is improved, the heat dissipation structure is beneficial to air circulation in the box body, the oil temperature of the transformer is effectively reduced, and the service life of the transformer is prolonged. And the temperature in the box body is always kept in a safe range.

Description

Technical Field

[0001] The invention relates to the technical field of box-type transformers, in particular to a box-type transformer for an on-load capacity-adjusting charging pile. Background Art

[0002] A box-type transformer is a factory-prefabricated indoor and outdoor compact distribution equipment that integrates high-voltage switchgear, distribution transformers and low-voltage distribution devices according to a certain wiring scheme. On-load capacity regulation means that the transformer can adjust its capacity when it is loaded. For the box-type transformer of the charging pile, this on-load capacity regulation function can flexibly adjust the output capacity of the transformer according to the load conditions of the charging pile.

[0003] When installing an oil-immersed transformer inside a traditional box-type transformer, the transformer is usually manually lifted into the internal space of the equipment, so that the high-voltage bushing on the transformer is aligned with the high-voltage busbar or cable terminal of the incoming equipment, and the transformer is fixed with bolts. When the position of the transformer needs to be adjusted, the bolts need to be repeatedly disassembled and tightened, which has low installation efficiency;

[0004] When it is necessary to repair the transformer inside the equipment, the operator is usually required to drill into the empty space inside the equipment and perform maintenance operations. However, due to the limited operating space inside the equipment, it is not convenient for the operator to perform maintenance operations such as disassembly and connection of the transformer, and the flexibility is poor;

[0005] When installing a high-voltage control cabinet or incoming line cabinet inside the equipment, multiple people usually work together to lift the cabinet, and then insert multiple cabinets into the equipment one by one. However, since the box-type transformer needs to integrate multiple parts such as the transformer, high-voltage equipment and low-voltage equipment, the installation space or operation channel of the equipment is narrow, and the cabinet is large in size, which makes it inconvenient to insert the cabinet into the equipment, resulting in low operating efficiency and poor flexibility. Summary of the invention

[0006] In view of the problems in the prior art, the present invention provides a box-type transformer for an on-load capacity-adjusting charging pile.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a box-type transformer for a load-adjustable charging pile includes a box body, a heat dissipation structure installed on the box body, a sliding structure arranged inside the box body, a fixed structure connected to the sliding structure, a limiting structure matched with the sliding structure, a transformer installed on the sliding structure, a slide-out structure installed inside the box body, and a control cabinet connected to the slide-out structure;

[0008] The sliding structure includes two guide rails and four sliding sleeves slidably connected to the guide rails. The guide rails are fixedly connected inside the box. A connecting frame is fixedly connected between two symmetrical sliding sleeves. Two extension plates are fixedly connected between the two connecting frames. Two sliding frames are arranged between the two extension plates. A transformer is fixedly connected between the two sliding frames. A fixing structure is matched on the sliding frame.

[0009] The fixing structure includes a driving block and a roller rotatably connected to the driving block, and both ends of the slide are slidably connected to the driving block, and the upper surfaces of the two extension plates are provided with guide grooves, and the rollers are rotatably connected to the guide grooves, and two first screw rods are threadedly connected to the slide near the outer side, and the bottom ends of the two first screw rods are respectively rotatably connected to the two driving blocks, and the two ends of the other slide are slidably connected to a sliding rod, and the bottom ends of the two sliding rods are respectively fixedly connected to the other two driving blocks, and the top ends of the two sliding rods are fixedly connected to a connecting strip, and the end of the connecting strip is rotatably connected to the first screw rod, and the upper surface of one of the extension plates is fixedly connected to the second rack, and the ends of the two slides close to the second rack are fixedly connected to the first rack, and the first rack and the second rack are meshed with each other.

[0010] Specifically, a rotating handle is fixedly connected to the top end of the first screw rod, and the rotating handle is in an "L"-shaped structure.

[0011] Specifically, the two first screw rods are symmetrically arranged, the two connecting bars are symmetrically arranged, and the driving block is in a "U"-shaped structure.

[0012] Specifically, the two guide rails are symmetrically arranged, the connecting frame and the sliding frame are both in a "U"-shaped structure, and the end of the extension plate close to the inner side is in a "U"-shaped structure.

[0013] Specifically, the limiting structure includes two springs and a connecting plate fixedly connected between the two springs, wherein the two springs are fixedly connected to the inside of one of the guide rails, the connecting plate is slidably connected to the inner wall of the guide rail, one end of the connecting plate close to the inner side is fixedly connected to a limiting block, and limiting grooves are provided on the two sliding sleeves close to the connecting plate.

[0014] Specifically, a cover plate is provided above the connecting plate, the cover plate is fixedly connected to the guide rail, an end of the cover plate is slidably connected to a limiting block, and a driving hole is provided on an end of the cover plate away from the limiting block.

[0015] Specifically, the slide-out structure includes two pairs of first support seats and first guide rods fixedly connected between two adjacent first support seats. The inside of the box body is fixedly connected with two pairs of first support seats, and each of the two first guide rods is slidably connected with a connecting sleeve. A base plate is fixedly connected between the two connecting sleeves, and three control cabinets are fixedly connected to the base plate.

[0016] Specifically, five second support seats are provided between the two first guide rods, the second support seat is fixedly connected to the inner wall of the box, a motor is fixedly connected to the inside of the box, a second screw rod is fixedly connected to the output shaft of the motor, the second screw rod is rotatably connected to one of the second support seats, one end of the base plate is fixedly connected to a driving plate, the driving plate and the second screw rod are threadedly connected, and two driving sleeves are fixedly connected to the other end of the base plate, the two driving sleeves are fixedly connected to the second guide rods, the two second guide rods are respectively slidably connected to the two pairs of second support seats on the outside, and the ends of the second guide rods are fixedly connected to the driving plate.

[0017] Specifically, two guide plates are fixedly connected to the inner wall of the box body, the two guide plates are slidably connected to the bottom plate, and the driving plate is in a "convex" shape.

[0018] Specifically, the heat dissipation structure includes a protective door and a heat dissipation net fixedly connected to the protective door, multiple protective doors are rotatably connected to the outer wall of the box, multiple heat dissipation plates are fixedly connected to the top of the box, and two fans are fixedly connected to the inner wall of the box.

[0019] The beneficial effects of the present invention are:

[0020] (1) The on-load capacity-adjusting charging pile box-type transformer described in the present invention has a sliding structure installed inside the box body. The sliding structure is used in conjunction with the limiting structure. The setting of the sliding structure facilitates the transformer to be pulled out a certain distance from the inside of the box body when repairing the transformer, thereby increasing the operating space and improving the maintenance efficiency.

[0021] (2) The on-load capacity-adjusting charging pile box-type transformer described in the present invention has a fixed structure connected to the sliding structure. The setting of the fixed structure facilitates increasing the distance that the transformer can be pulled out, further increasing the operating space, and at the same time facilitates adjusting the position of the transformer inside the box, so that the high-voltage bushing on the transformer is aligned with the high-voltage busbar or cable terminal of the incoming equipment during installation, and realizes rapid fixing of the transformer, avoiding repeated tightening and disassembly of bolts.

[0022] (3) The on-load capacity-adjusting charging pile box-type transformer described in the present invention has a slide-out structure inside the box body. The setting of the slide-out structure effectively solves the problem that the cabinet is difficult to insert into the box body due to the narrow installation space or operation channel of the box body, simplifies the operation process, and improves flexibility.

[0023] (4) The on-load capacity-adjustable charging pile box-type transformer described in the present invention has a heat dissipation structure installed on the box body. The setting of the heat dissipation structure is conducive to the circulation of air inside the box body, effectively reducing the oil temperature of the transformer, and ensuring that the temperature inside the box body is always maintained within a safe range. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of the on-load capacity-adjusting charging pile box-type transformer provided by the present invention;

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0027] Figure 3 It is a schematic diagram of the connection structure between the guide rail and the sliding sleeve of the present invention;

[0028] Figure 4 It is a schematic diagram of the connection structure between the roller and the guide groove of the present invention;

[0029] Figure 5 It is a schematic diagram of the connection structure between the connection plate and the limit block of the present invention;

[0030] Figure 6 It is a schematic diagram of the connection structure between the box body and the heat dissipation structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the connection structure between the box body and the first support seat of the present invention;

[0032] Figure 8 for Figure 7 An enlarged schematic diagram of the structure of part B is shown;

[0033] Fig. 9 It is a schematic diagram of the connection structure between the base plate and the connecting sleeve of the present invention.

[0034] In the figure: 1, box body; 2, heat dissipation structure; 201, protective door; 202, heat dissipation net; 203, heat dissipation plate; 204, fan; 3, sliding structure; 301, guide rail; 302, sliding sleeve; 303, connecting frame; 304, extension plate; 305, slide frame; 4, fixed structure; 401, driving block; 402, roller; 403, first screw rod; 404, connecting bar; 405, slide rod; 406, rotating handle; 407, first rack; 408, second rack; 409, guide Slot; 5. Limiting structure; 501. Spring; 502. Connecting plate; 503. Cover plate; 504. Limiting block; 505. Limiting slot; 506. Driving hole; 6. Transformer; 7. Slide-out structure; 701. First supporting seat; 702. First guide rod; 703. Connecting sleeve; 704. Bottom plate; 705. Second supporting seat; 706. Second guide rod; 707. Driving plate; 708. Driving sleeve; 709. Motor; 710. Second screw rod; 711. Guide plate; 8. Control cabinet. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] like Figure 1-Figure 7As shown, the on-load capacity-adjusting charging pile box-type transformer of the present invention comprises a box body 1, a heat dissipation structure 2 installed on the box body 1, a sliding structure 3 arranged inside the box body 1, a fixed structure 4 connected to the sliding structure 3, a limiting structure 5 matched with the sliding structure 3, a transformer 6 installed on the sliding structure 3, a slide-out structure 7 installed inside the box body 1, and a control cabinet 8 connected to the slide-out structure 7; the sliding structure 3 comprises two guide rails 301 and four sliding sleeves 3 slidably connected to the guide rails 301. 02, a guide rail 301 is fixedly connected inside the box 1, a connecting frame 303 is fixedly connected between the two symmetrical sliding sleeves 302, two extension plates 304 are fixedly connected between the two connecting frames 303, two slides 305 are arranged between the two extension plates 304, a transformer 6 is fixedly connected between the two slides 305, a fixing structure 4 is matched on the slide 305, the two guide rails 301 are symmetrically arranged, the connecting frame 303 and the slide 305 are both in a "U" shape, and the extension plates 304 are on the The end near the inner side is in a "U"-shaped structure; the wiring on the transformer 6 is removed, and then the transformer 6 is pulled outward, so that the limit block 504 is no longer engaged with the limit groove 505 at the front end. In the process of pulling the transformer 6, the transformer 6 drives the two slides 305 at the bottom to move outward. Since the first rack 407 and the second rack 408 are in a meshing state at this time, the slide 305 drives the extension plate 304 and the connecting frame 303 at the bottom to move outward, and the connecting frame 303 drives the two pairs of sliding sleeves 302 along the guide rail 301 to move outward. The sleeve 302 is then pulled outwards until the inner sleeve 302 slides to just above the limit block 504. The screwdriver is then released and the limit block 504 slides upwards under the resetting action of the spring 501 until it engages with the limit slot 505 just above it. At this point, the sleeve 302 is effectively limited after the transformer 6 is pulled outwards for a certain distance, thereby improving stability. At the same time, by pulling the transformer 6 outwards for a certain distance, the operating space for the staff is increased, preventing the staff from inserting their bodies into the interior of the box body 1 for further maintenance, thereby improving maintenance efficiency.

[0037] Specifically, Figure 2-Figure 4As shown, the fixed structure 4 includes a driving block 401 and a roller 402 rotatably connected to the driving block 401, both ends of the slide 305 are slidably connected to the driving block 401, the upper surfaces of the two extension plates 304 are provided with guide grooves 409, the rollers 402 are rollingly connected to the guide grooves 409, and two first screw rods 403 are threadedly connected to the slide 305 near the outside, and the bottoms of the two first screw rods 403 are respectively rotatably connected to the two driving blocks 401, and the two ends of the other slide 305 are respectively slidably connected to a sliding rod 405, and the bottom ends of the two sliding rods 405 are respectively fixedly connected to the other two driving blocks 401, and the two sliding rods The top of the rod 405 is fixedly connected with a connecting bar 404, and the end of the connecting bar 404 is rotatably connected to the first screw rod 403. The upper surface of one of the extension plates 304 is fixedly connected with a second rack 408, and one end of the two slides 305 close to the second rack 408 is fixedly connected with a first rack 407, and the first rack 407 and the second rack 408 are meshed with each other. The top of the first screw rod 403 is fixedly connected with a rotating handle 406, and the rotating handle 406 is in an "L" shape. The two first screw rods 403 are symmetrically arranged, the two connecting bars 404 are symmetrically arranged, and the driving block 401 is in a "U" shape.If it is found during maintenance that the operating space is still limited, it is only necessary to rotate the rotating handles 406 at both ends of the slide 305, and then the rotating handles 406 drive the first screw rod 403 to rotate. Since the first screw rod 403 and the slide 305 are threadedly connected, the first screw rod 403 drives the bottom driving block 401 to slide downward along the inner wall of the slide 305. At this time, the driving block 401 drives the bottom roller 402 to move downward, and the same operation is repeated at the other end. At the same time, in the process of rotating the rotating handle 406, the first screw rod 403 drives the connecting bar 404 to move downward, and the connecting bar 404 drives the sliding bar 405 at the other end to slide downward, and the sliding bar 405 drives the driving block 401 and the roller 402 on the other slide 305 to move downward. At this time, the four rollers 402 push the slide 305 upward for a distance, so that the first rack 407 at the end of the slide 305 is no longer engaged with the second rack 408 on the extension plate 304, and it can be The position of the transformer 6 is adjusted by rolling the roller 402 in the guide groove 409. At this time, the transformer 6 is further pulled out for a distance, which further increases the operating space and facilitates the maintenance of the transformer 6. After the transformer 6 is further pulled out for a distance, the handle 406 is rotated in the opposite direction to make the first rack 407 mesh with the second rack 408 again, so that the position of the transformer 6 is effectively limited. At the same time, the first rack 407 is meshed with the second rack 408, and the roller 402 rolls in the guide groove 409, so that the transformer 6 can be quickly installed, avoiding the use of bolts for fixing, and solving the problem of difficulty in tightening the bolts due to the limited operating space. At the same time, when the transformer 6 is pushed into the box body 1, the position of the transformer 6 can be adjusted quickly and arbitrarily, which is conducive to aligning the high-voltage bushing on the transformer 6 with the high-voltage busbar or cable terminal head of the incoming line equipment, and has strong flexibility. ;

[0038] Specifically, Figure 2-Figure 5As shown, the limiting structure 5 includes two springs 501 and a connecting plate 502 fixedly connected between the two springs 501, wherein two springs 501 are fixedly connected inside one of the guide rails 301, the connecting plate 502 is slidably connected to the inner wall of the guide rail 301, one end of the connecting plate 502 close to the inner side is fixedly connected to a limiting block 504, and two sliding sleeves 302 close to the connecting plate 502 are provided with limiting grooves 505, a cover plate 503 is provided above the connecting plate 502, the cover plate 503 is fixedly connected to the guide rail 301, the end of the cover plate 503 is slidably connected to the limiting block 504, and a driving hole 506 is provided on the end of the cover plate 503 away from the limiting block 504; in the process of repairing the transformer 6 inside the equipment, in order to solve the problem that the internal space of the box body 1 is limited and it is inconvenient to repair the transformer The limit block 504 is then driven by the connecting plate 302 to slide downwardly, thereby preventing the connecting plate 502 from sliding out of the limiting groove 505. At this time, the limit block 504 no longer blocks the sliding sleeve 302 from sliding on the guide rail 301, thereby facilitating the subsequent extraction of the transformer 6 from the interior of the box body 1. At the same time, the position of the transformer 6 is limited by the engagement of the sliding sleeve 302, thereby preventing the transformer 6 from being displaced under external vibration, thereby improving flexibility.

[0039] Specifically, Figure 1 and Figure 6-Figure 9As shown, the slide-out structure 7 includes two pairs of first support seats 701 and first guide rods 702 fixedly connected between two adjacent first support seats 701, the interior of the box body 1 is fixedly connected with two pairs of first support seats 701, each of the two first guide rods 702 is slidably connected with a connecting sleeve 703, a bottom plate 704 is fixedly connected between the two connecting sleeves 703, three control cabinets 8 are fixedly connected to the bottom plate 704, five second support seats 705 are arranged between the two first guide rods 702, the second support seats 705 are fixedly connected to the inner wall of the box body 1, a motor 709 is fixedly connected to the interior of the box body 1, a second screw rod 710 is fixedly connected to the output shaft of the motor 709, and the second The screw rod 710 is rotatably connected to one of the second support seats 705, one end of the bottom plate 704 is fixedly connected to a driving plate 707, the driving plate 707 and the second screw rod 710 are threadedly connected, the other end of the bottom plate 704 is fixedly connected to two driving sleeves 708, the two driving sleeves 708 are fixedly connected to a second guide rod 706, the two second guide rods 706 are respectively slidably connected to the two pairs of second support seats 705 on the outside, the ends of the second guide rods 706 are fixedly connected to the driving plate 707, the inner wall of the box body 1 is fixedly connected to two guide plates 711, the two guide plates 711 are slidably connected to the bottom plate 704, and the driving plate 707 is in a "convex" shape;When installing the control cabinet 8 inside the box body 1, first, the motor 709 at the bottom of the box body 1 drives the second screw rod 710 to rotate on the second support seat 705. Since the end of the second screw rod 710 is threadedly connected to the driving plate 707, the second screw rod 710 drives the bottom plate 704 to slide outward along the guide plates 711 on both sides through the driving plate 707. In the process of the bottom plate 704 sliding outward, the connecting sleeves 703 at both ends of the bottom surface of the bottom plate 704 slide outward along the first guide rod 702, and since the two ends of the two first guide rods 702 are fixed to the inside of the box body 1 through the first support seat 701, the stability of the bottom plate 704 is improved. At the same time, since two driving sleeves 708 are installed at the center position of the bottom surface of the bottom plate 704, the two driving sleeves 708 are connected to the driving plate 707 through the two second guide rods 706. The second guide rod 706 is supported by two pairs of second support seats 705. When the connection sleeves 703 at both ends of the bottom plate 704 contact the first support seats 701 close to the outside, the bottom plate 704 has slid outward to the maximum extent of the box body 1. The second support seats 705 cooperate with the second guide rod 706 to support the center position of the bottom plate 704 to prevent the outer section of the bottom plate 704 from tilting under the action of gravity, further improving the stability of the bottom plate 704. At the same time, the control cabinet 8 is fixed to the bottom plate 704 by bolts, and then the output shaft of the motor 709 rotates in the opposite direction to drive the bottom plate 704 and the control cabinet 8 to slide into the inside of the box body 1, effectively solving the problem that the control cabinet 8 is difficult to be inserted into the box body 1 due to the effective internal space of the box body 1 and the small volume of the operation channel, simplifying the operation process and improving the installation efficiency. ;

[0040] Specifically, Figure 1 , Figure 6 and Figure 7 As shown, the heat dissipation structure 2 includes a protective door 201 and a heat dissipation net 202 fixedly connected to the protective door 201, a plurality of protective doors 201 are rotatably connected to the outer wall of the box body 1, a plurality of heat dissipation plates 203 are fixedly connected to the top of the box body 1, and two fans 204 are fixedly connected to the inner wall of the box body 1; after the installation of the control cabinet 8 and the maintenance of the transformer 6 are completed, the protective doors 201 on the box body 1 are closed in turn, because the heat dissipation net 202 is installed on the protective door 201, and the heat dissipation plate 203 is installed on the top of the box body 1, which is conducive to the circulation of air inside the box body 1, and cooperates with the fan 204 inside the box body 1, so as to effectively reduce the oil temperature of the transformer 6, and ensure that the temperature in the box body 1 is always kept within a safe range.

[0041] When the present invention is in use, during the process of inspecting the transformer 6 inside the device, in order to solve the problem that the internal space of the box body 1 is limited and it is inconvenient to connect the transformer 6 or disassemble the shell, etc., it is only necessary to first extend the body into the box body 1, and then find the cover plate 503 on one of the guide rails 301, and then use a screwdriver to insert the drive hole 506, at this time the screwdriver presses the connecting plate 502 downward, so that the connecting plate 502 compresses the spring 501 downward, and at the same time the connecting plate 502 drives the end limit block 504 to slide downward, at this time because a sliding sleeve 302 close to the outside is located directly above the limit block 504, and then the connecting plate 502 drives the limit block 504 to slide out of the limit groove 505, and at this time the limit block 504 no longer blocks The sleeve 302 slides on the guide rail 301, which makes it easier to subsequently pull the transformer 6 out of the box body 1. At the same time, the position of the transformer 6 is limited by the engagement of the sleeve 302, which prevents the transformer 6 from being displaced under external vibration and improves flexibility. The wiring on the transformer 6 is removed, and then the transformer 6 is pulled outward so that the limit block 504 is no longer engaged with the limit groove 505 at the front end. In the process of pulling the transformer 6, the transformer 6 drives the two slides 305 at the bottom to move outward. Since the first rack 407 and the second rack 408 are in a meshing state at this time, the slide 305 drives the bottom extension plate 304 and the connecting frame 303 to move outward, and the connecting frame 303 drives the two pairs of sleeves 302 along The guide rail 301 slides outward until the inner sleeve 302 slides to the top of the limit block 504. At this time, the screwdriver is loosened, and the limit block 504 slides upward under the reset action of the spring 501 until it is engaged with the limit groove 505 above. At this time, the sleeve 302 is effectively limited after the transformer 6 is pulled outward for a distance, thereby improving stability. At the same time, by pulling the transformer 6 outward for a distance, the operating space of the staff is increased, avoiding the staff from probing into the interior of the box body 1 for further maintenance, thereby improving the maintenance efficiency. If it is found that the operating space is still limited during maintenance, it is only necessary to rotate the rotating handles 406 at both ends of the slide 305, and then rotating the handles 406 drives the first screw rod 403 to rotate. Because the first screw rod 403 is threadedly connected to the slide 305, the first screw rod 403 drives the driving block 401 at the bottom to slide downward along the inner wall of the slide 305. At this time, the driving block 401 drives the roller 402 at the bottom to move downward, and the other end repeats the same operation. At the same time, in the process of turning the rotating handle 406, the first screw rod 403 drives the connecting bar 404 to move downward, and the connecting bar 404 drives the sliding bar 405 at the other end to slide downward, and the sliding bar 405 drives the driving block 401 and the roller 402 on the other slide 305 to move downward. At this time, the four rollers 402 lift the slide 305 upward for a distance, so that the first rack 407 at the end of the slide 305 is no longer meshed with the second rack 408 on the extension plate 304.The position of the transformer 6 can be adjusted by rolling the roller 402 in the guide groove 409. At this time, the transformer 6 is further pulled out a distance, which further increases the operating space and facilitates the maintenance of the transformer 6. After the transformer 6 is further pulled out a distance, the handle 406 is rotated in the opposite direction to make the first rack 407 mesh with the second rack 408 again, so as to effectively limit the position of the transformer 6. At the same time, the first rack 407 is meshed with the second rack 408, and the roller 402 rolls in the guide groove 409, so that the transformer 6 can be quickly installed, avoiding the use of bolts for fixing, and solving the problem of difficulty in tightening the bolts due to the limited operating space. At the same time, when the transformer 6 is pushed into the box body 1, the position of the transformer 6 can be adjusted quickly and arbitrarily, which is conducive to aligning the high-voltage bushing on the transformer 6 with the high-voltage busbar or cable terminal head of the incoming line equipment, and has strong flexibility.

[0042] When installing the control cabinet 8 inside the box body 1, first, the motor 709 at the bottom of the box body 1 drives the second screw rod 710 to rotate on the second support seat 705. Since the end of the second screw rod 710 is threadedly connected to the driving plate 707, the second screw rod 710 drives the bottom plate 704 to slide outward along the guide plates 711 on both sides through the driving plate 707. In the process of the bottom plate 704 sliding outward, the connecting sleeves 703 at both ends of the bottom surface of the bottom plate 704 slide outward along the first guide rod 702, and since the two ends of the two first guide rods 702 are fixed to the inside of the box body 1 through the first support seat 701, the stability of the bottom plate 704 is improved. At the same time, since two driving sleeves 708 are installed at the center position of the bottom surface of the bottom plate 704, the two driving sleeves 708 are connected to the driving plate 707 through the two second guide rods 706. The second guide rod 706 is supported by two pairs of second support seats 705. When the connecting sleeves 703 at both ends of the bottom plate 704 contact the first support seats 701 close to the outside, the bottom plate 704 has slid outward to the outside of the box body 1 to the maximum extent. The second support seats 705 cooperate with the second guide rod 706 to support the center position of the bottom plate 704 to prevent the outer section of the bottom plate 704 from tilting under the action of gravity, thereby further improving the stability of the bottom plate 704. At the same time, the control cabinet 8 is fixed to the bottom plate 704 by bolts, and then the output shaft of the motor 709 rotates in the opposite direction to drive the bottom plate 704 and the control cabinet 8 to slide into the interior of the box body 1, effectively solving the problem that the control cabinet 8 is difficult to be inserted into the box body 1 due to the effective internal space of the box body 1 and the small volume of the operation channel, thereby simplifying the operation process and improving the installation efficiency.

[0043] After completing the installation of the control cabinet 8 and the inspection of the transformer 6, the protective doors 201 on the box body 1 are closed in turn. Since the protective doors 201 are equipped with heat dissipation nets 202 and the top of the box body 1 is equipped with heat dissipation plates 203, it is beneficial to the circulation of air inside the box body 1. In combination with the fan 204 inside the box body 1, the oil temperature of the transformer 6 is effectively reduced to ensure that the temperature inside the box body 1 is always kept within a safe range.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. On-load capacity-adjusting charging pile box-type transformer, characterized in that: The invention comprises a box (1), a heat dissipation structure (2) installed on the box (1), a sliding structure (3) arranged inside the box (1), a fixed structure (4) connected to the sliding structure (3), a limiting structure (5) matched with the sliding structure (3), a transformer (6) installed on the sliding structure (3), a slide-out structure (7) installed inside the box (1), and a control cabinet (8) connected to the slide-out structure (7); The sliding structure (3) comprises two guide rails (301) and four sliding sleeves (302) slidably connected to the guide rails (301); the guide rails (301) are fixedly connected inside the box body (1); a connecting frame (303) is fixedly connected between two symmetrical sliding sleeves (302); two extension plates (304) are fixedly connected between the two connecting frames (303); two sliding frames (305) are provided between the two extension plates (304); a transformer (6) is fixedly connected between the two sliding frames (305); and a fixed structure (4) is matched on the sliding frame (305); The fixed structure (4) comprises a driving block (401) and a roller (402) rotatably connected to the driving block (401); both ends of the slide (305) are slidably connected to the driving block (401); the upper surfaces of the two extension plates (304) are provided with guide grooves (409); the rollers (402) are rollingly connected to the guide grooves (409); two first screw rods (403) are threadedly connected to the slide (305) near the outer side; the bottoms of the two first screw rods (403) are respectively rotatably connected to the two driving blocks (401); and the two ends of the other slide (305) are respectively slidably connected to the guide grooves (409). There is a slide bar (405), the bottom ends of the two slide bars (405) are fixedly connected to the other two driving blocks (401) respectively, the top ends of the two slide bars (405) are fixedly connected to a connecting bar (404), the end of the connecting bar (404) is rotatably connected to the first screw rod (403), the upper surface of one of the extension plates (304) is fixedly connected to a second rack (408), and one end of the two slides (305) close to the second rack (408) is fixedly connected to a first rack (407), and the first rack (407) and the second rack (408) are meshed with each other.

2. The on-load capacity-adjusting charging pile box-type transformer according to claim 1 is characterized in that: The top end of the first screw rod (403) is fixedly connected with a rotating handle (406), and the rotating handle (406) is in an "L"-shaped structure.

3. The on-load capacity-adjusting charging pile box-type transformer according to claim 1 is characterized in that: The two first screw rods (403) are symmetrically arranged, the two connecting bars (404) are symmetrically arranged, and the driving block (401) is in a "U"-shaped structure.

4. The on-load capacity-adjusting charging pile box-type transformer according to claim 1 is characterized in that: The two guide rails (301) are symmetrically arranged, the connecting frame (303) and the sliding frame (305) are both in a "U"-shaped structure, and the end of the extension plate (304) close to the inner side is in a "U"-shaped structure.

5. The on-load capacity-adjusting charging pile box-type transformer according to claim 4 is characterized in that: The limiting structure (5) comprises two springs (501) and a connecting plate (502) fixedly connected between the two springs (501), wherein the interior of one of the guide rails (301) is fixedly connected with the two springs (501), the connecting plate (502) is slidably connected to the inner wall of the guide rail (301), one end of the connecting plate (502) close to the inner side is fixedly connected to a limiting block (504), and limiting grooves (505) are provided on the two sliding sleeves (302) close to the connecting plate (502).

6. The on-load capacity-adjusting charging pile box-type transformer according to claim 5 is characterized in that: A cover plate (503) is provided above the connecting plate (502); the cover plate (503) is fixedly connected to the guide rail (301); an end of the cover plate (503) is slidably connected to a limit block (504); and a driving hole (506) is provided on one end of the cover plate (503) away from the limit block (504).

7. The on-load capacity-adjusting charging pile box-type transformer according to claim 1 is characterized in that: The slide-out structure (7) comprises two pairs of first support seats (701) and first guide rods (702) fixedly connected between two adjacent first support seats (701); the interior of the box body (1) is fixedly connected with the two pairs of first support seats (701); each of the two first guide rods (702) is slidably connected with a connecting sleeve (703); a bottom plate (704) is fixedly connected between the two connecting sleeves (703); and three control cabinets (8) are fixedly connected to the bottom plate (704).

8. The on-load capacity-adjusting charging pile box-type transformer according to claim 7 is characterized in that: Five second support seats (705) are arranged between the two first guide rods (702), the second support seats (705) are fixedly connected to the inner wall of the box body (1), a motor (709) is fixedly connected inside the box body (1), a second screw rod (710) is fixedly connected to the output shaft of the motor (709), the second screw rod (710) is rotatably connected to one of the second support seats (705), one end of the bottom plate (704) is fixedly connected to a driving plate (707), the driving plate (707) and the second screw rod (710) are threadedly connected, the other end of the bottom plate (704) is fixedly connected to two driving sleeves (708), the two driving sleeves (708) are fixedly connected to the second guide rods (706), the two second guide rods (706) are respectively slidably connected to the two pairs of second support seats (705) on the outside, and the ends of the second guide rods (706) are fixedly connected to the driving plate (707).

9. The on-load capacity-adjusting charging pile box-type transformer according to claim 8 is characterized in that: Two guide plates (711) are fixedly connected to the inner wall of the box body (1); the two guide plates (711) are slidably connected to the bottom plate (704); and the drive plate (707) is in a "convex" shape.

10. The on-load capacity-adjusting charging pile box-type transformer according to claim 1 is characterized in that: The heat dissipation structure (2) comprises a protective door (201) and a heat dissipation net (202) fixedly connected to the protective door (201); a plurality of protective doors (201) are rotatably connected to the outer wall of the box (1); a plurality of heat dissipation plates (203) are fixedly connected to the top of the box (1); and two fans (204) are fixedly connected to the inner wall of the box (1).

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