A combined transformer that is convenient for disassembly, assembly and maintenance

Abstract

The present invention relates to the technical field of transformers, and specifically to a combined transformer that is convenient for disassembly, assembly and maintenance, including a combined box, a transformer box arranged inside the combined box, and a box cover installed at the upper end of the transformer box. Steel frames are symmetrically and fixedly connected to the lower end of the transformer box. The transformer in the combined transformer can be quickly and stably removed outside the combined box. At this time, the operation space for disassembly and assembly is expanded, and the field of vision is wide, thus facilitating disassembly, assembly and maintenance. After the transformer is disassembled, when the box cover, iron core and winding are lifted together by a crane, first, the box cover, iron core and winding will be supported and do not need to be placed on the ground. Second, during the maintenance process, the box cover, iron core and winding will not shake, which is beneficial to maintenance. After the maintenance is completed, the box cover, iron core and winding can be quickly and accurately reinstalled without the need for staff to control the positioning, that is, the accurate installation operation after the disassembly of the box cover, iron core and winding is very convenient, bringing convenience.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and particularly to a combined transformer that is convenient for disassembly, assembly, inspection and repair. Background Technique

[0002] A combined transformer is a power equipment that combines a transformer, high-voltage switchgear, a fuse, etc., and is centrally installed inside a combined box composed of multiple box plates. The combined box has multiple compartments to separate different equipment for easy management.

[0003] The transformer in the combined transformer mainly consists of a box body, a box cover, an iron core and windings, etc. The iron core and windings are both connected to the box cover, and the box cover and the box body are connected by multiple screws and nuts. When a fault occurs in the transformer in the combined transformer, it is necessary to remove the screws between the box cover and the box body one by one, and it is necessary to use a crane to lift the box cover, so as to drive the iron core and windings out of the box body for comprehensive inspection and repair.

[0004] However, the transformer in the combined transformer is installed in the box. The operation space for disassembly and assembly is not only narrow, but also the field of vision is not wide. Moreover, the transformer is relatively heavy and difficult to be quickly and stably moved out of the box, so it is not convenient for disassembly, assembly, inspection and repair. At the same time, when the box cover of the transformer in the combined transformer is lifted and the iron core and windings are driven out of the box body together, at this time, it is necessary to lift the box cover, the iron core and the windings to the ground for inspection and repair. After the inspection and repair are completed, it is necessary to use a crane again to lift the box cover, the iron core and the windings and assemble them on the box body, which is time-consuming. And during this process, the positioning between the box cover, the iron core, the windings and the box body needs to be controlled by the staff, which determines whether the position of the iron core and windings inside the box body is accurate and whether the screw holes between the box cover and the box body correspond. And it is easy for the staff to install incorrectly and the operation is not convenient, which is easy to cause inconvenience. Summary of the Invention

[0005] The purpose of the present invention is to provide a combined transformer that is convenient for disassembly, assembly, inspection and repair, so as to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solution: A combined transformer that is convenient for disassembly, assembly and maintenance, including a combined box, a transformer box arranged inside the combined box, and a box cover installed at the upper end of the transformer box. The lower end of the transformer box is symmetrically and fixedly connected with steel frames. The lower ends of the two steel frames are jointly and fixedly connected with a sliding plate. A groove is opened at the bottom end inside the combined box corresponding to the sliding plate. The groove and the sliding plate are in sliding fit. A driving mechanism is arranged between the sliding plate and the combined box. One side edge at the lower end of the sliding plate is fixedly connected with a concave plate. The other side edge at the lower end of the sliding plate is attached to a concave-shaped plate. Rolling columns are rotatably connected to the inner walls of both the concave-shaped plate and the concave plate. Both of the two rolling columns are in contact with the bottom of the groove. Self-adjusting mechanisms are arranged between the front and rear edge parts at the upper end of the concave-shaped plate and the sliding plate. A positioning mechanism is arranged between the box cover and the transformer box.

[0007] Preferably, the edge of the groove close to the box door of the combined box is inclined.

[0008] Preferably, the driving mechanism includes a motor and a limiting column. The motor is fixedly installed at the bottom end inside the combined box close to the concave plate. One end of the limiting column is fixedly connected to the inner wall of the combined box far from the motor. The output shaft end of the motor is fixedly connected with a screw rod. The transformer box is located between the screw rod and the limiting column. The positions of the screw rod and the limiting column correspond to each other. U-shaped blocks are rotatably connected to one end of the screw rod and the limiting column close to the box door of the combined box. The lower ends of the two U-shaped blocks are fixedly connected to the bottom end inside the combined box. A connecting plate is commonly threadedly sleeved on the outer wall of the screw rod close to the motor. The limiting column movably penetrates through the connecting plate. The lower end of the connecting plate is fixedly connected to the upper end of the sliding plate.

[0009] Preferably, the self-adjusting mechanism includes a connecting rod. The connecting rod is fixedly connected to the upper end of the concave-shaped plate. The connecting rod movably penetrates through the upper end of the sliding plate. The upper end of the connecting rod is fixedly connected with a limiting plate. A first spring is fixedly connected to the upper end of the limiting plate. The upper end of the first spring is fixedly connected with a square tube. The lower end of the square tube is fixedly connected to the upper end of the sliding plate. The limiting plate is slidably attached to the inside of the square tube. A limiting mechanism is arranged between the connecting rod and the sliding plate.

[0010] Preferably, the limiting mechanism includes two square grooves and four triangular grooves. The two square grooves are symmetrically opened on the inner wall of the sliding plate corresponding to the connecting rod. Fixed blocks are fixedly connected to the inner walls of the two square grooves. Connecting columns are slidably inserted through the inner walls of the two fixed blocks. Elastic components are elastically connected to the corresponding ends of the two connecting columns with trapezoidal blocks. Two of the triangular grooves are symmetrically opened at the front end of the connecting rod up and down. The other two triangular grooves are symmetrically opened at the rear end of the connecting rod up and down. The two trapezoidal blocks are respectively in sliding fit with the two triangular grooves located below.

[0011] Preferably, the limiting mechanism further includes two L-shaped rods and two L-shaped grooves. The two L-shaped rods are respectively fixedly connected to the ends of the two connecting columns away from each other. The two L-shaped grooves are respectively formed in the inner wall of the sliding plate corresponding to the two L-shaped rods. The two L-shaped grooves are respectively communicated with the two square grooves. The two L-shaped rods are respectively in sliding fit with the two L-shaped grooves. Magnets are fixedly connected to the tops of the two L-shaped rods. Magnetic force components are arranged on the moving paths of the two magnets.

[0012] Preferably, the elastic component includes a sliding block. The sliding block is fixedly connected to one end of the connecting column corresponding to the trapezoidal block. The sliding block is in sliding fit with the square groove. A second spring is fixedly connected between the sliding block and the fixed block. The second spring is slidably sleeved on the outer wall of the connecting column.

[0013] Preferably, the magnetic force component includes a splicing plate. The splicing plate is fixedly connected to the inner vertical surface of the combined box near the lower edge. Magnets are symmetrically fixedly connected to the lower end of the splicing plate. The two magnets correspond to the two magnets in position.

[0014] Preferably, the positioning mechanism includes two triangular plates and four guide columns. The two triangular plates are respectively fixedly connected to the front and rear ends of the transformer box near the upper edge. The four guide columns are paired in twos and are respectively fixedly connected to the front and rear edges of the lower end of the box cover. The four guide columns all movably penetrate through the outer extension of the upper end of the transformer box. Square shells are respectively fixedly connected to the lower ends of the two guide columns in the front and the two guide columns in the rear. Trapezoidal plates are slidably installed in the two square shells through elastic force mechanisms. The two trapezoidal plates correspond to the two triangular plates in position.

[0015] Preferably, the elastic force mechanism includes two splicing columns. The two splicing columns are symmetrically slidably inserted into the inner walls of the square shells away from the trapezoidal plates. One ends of the two splicing columns inside the square shells are fixedly connected to the vertical surfaces of the trapezoidal plates. The other ends of the two splicing columns are jointly fixedly connected to a square frame. The outer walls of the two splicing columns are slidably sleeved with third springs. The two third springs are fixedly connected between the vertical surfaces of the trapezoidal plates and the inner walls of the square shells.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. Through the mutual cooperation of the sliding plate, the groove, the driving mechanism, the concave plate, the concave-shaped plate, the roller, the self-adjusting mechanism, the limiting mechanism, the elastic component and the magnetic force component, the transformer in the combined transformer can be quickly and stably moved out of the combined box. At this time, the disassembly and assembly operation space is enlarged and the field of vision is wide, so as to facilitate disassembly, assembly and maintenance.

[0018] 2. Through the mutual cooperation of the positioning mechanism and the elastic mechanism, after the transformer in the combined transformer is disassembled, and when the cover, iron core and winding are lifted together by a crane, first, the cover, iron core and winding will be supported and do not need to be placed on the ground. Second, during the maintenance process, the cover, iron core and winding will not shake, which is beneficial to maintenance. After the maintenance is completed, the cover, iron core and winding can be quickly and accurately reinstalled without the need for staff to control the positioning, that is, the accurate installation operation after the disassembly of the cover, iron core and winding is very convenient, bringing convenience. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 is a partial cross-sectional view at the combined box of the present invention;

[0021] Figure 3 is of the present invention Figure 2 enlarged view of the structure at A;

[0022] Figure 4 is a partial cross-sectional view of the slide plate and the square tube of the present invention;

[0023] Figure 5 is of the present invention Figure 4 enlarged view of the structure at B;

[0024] Figure 6 is a bottom view of the transformer box and the slide plate of the present invention and a partial cross-sectional view of the square shell;

[0025] Figure 7 is of the present invention Figure 6 enlarged view of the structure at C;

[0026] Figure 8 is a partial cross-sectional view of the slide plate, the square tube and the connecting rod of the present invention;

[0027] Figure 9 is a partial cross-sectional view of the square shell, the square frame and the trapezoidal plate of the present invention.

[0028] In the attached drawings, the list of components represented by each reference number is as follows: 1. Combination box; 2. Transformer box; 3. Steel frame; 4. Groove; 5. Slide plate; 6. Roller; 7. Stud; 8. Connecting plate; 9. Motor; 10. Guide post; 11. Box cover; 12. U-shaped block; 13. Magnet block; 14. Splicing plate; 15. Square tube; 16. Magnet rod; 17. L-shaped groove; 18. Square shell; 19. First spring; 20. Fixed block; 21. Square groove; 22. L-shaped rod; 23. Concave plate; 24. Connecting rod; 25. Trapezoidal block; 26. Sliding block; 27. Second spring; 28. Connecting column; 29. Triangular groove; 30. Limiting plate; 31. Square frame; 32. Concave plate; 33. Triangular plate; 34. Trapezoidal plate; 35. Third spring; 36. Splicing column; 37. Limiting column. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1: Please refer to Figure 1 - Figure 9 , a combined transformer that is convenient for disassembly, assembly and maintenance, including a combination box 1, a transformer box 2 arranged inside the combination box 1, and a box cover 11 installed at the upper end of the transformer box 2. The lower ends of the transformer box 2 are symmetrically and fixedly connected with steel frames 3. The lower ends of the two steel frames 3 are jointly and fixedly connected with a slide plate 5. A groove 4 is opened at the bottom end inside the combination box 1 corresponding to the slide plate 5. The groove 4 and the slide plate 5 are slidably matched. A driving mechanism is provided between the slide plate 5 and the combination box 1. A concave plate 32 (as shown in Figure 6 ) is fixedly connected to one side edge of the lower end of the slide plate 5. A concave plate 23 is attached to the other side edge of the lower end of the slide plate 5. Rollers 6 are rotatably connected to the inner walls of both the concave plate 23 and the concave plate 32. Both rollers 6 are in contact with the bottom of the groove 4. Self-adjusting mechanisms are provided between the front and rear edge portions of the upper end of the concave plate 23 and the slide plate 5. A positioning mechanism is provided between the box cover 11 and the transformer box 2.

[0031] The edge of the groove 4 close to the box door of the combination box 1 is inclined.

[0032] The driving mechanism includes a motor 9 and a limit post 37. The motor 9 is fixedly installed at the inner bottom end of the combined box 1 near the concave plate 32. One end of the limit post 37 is fixedly connected to the inner wall of the combined box 1 away from the motor 9. The output shaft end of the motor 9 is fixedly connected with a stud 7. The transformer box 2 is located between the stud 7 and the limit post 37. The positions of the stud 7 and the limit post 37 correspond to each other. At one end of the stud 7 and the limit post 37 close to the door of the combined box 1, U-shaped blocks 12 are rotatably connected. The lower ends of the two U-shaped blocks 12 are fixedly connected to the inner bottom end of the combined box 1. A connecting plate 8 is commonly threadedly sleeved on the outer wall of the stud 7 near the motor 9. The limit post 37 movably penetrates through the connecting plate 8. The lower end of the connecting plate 8 is fixedly connected to the upper end of the sliding plate 5.

[0033] The self-adjusting mechanism includes a connecting rod 24 (as Figure 5 shown), the connecting rod 24 is fixedly connected to the upper end of the concave plate 23. The connecting rod 24 movably penetrates through the upper end of the sliding plate 5. The upper end of the connecting rod 24 is fixedly connected with a limit plate 30. The upper end of the limit plate 30 is fixedly connected with a first spring 19. The upper end of the first spring 19 is fixedly connected with a square tube 15. The lower end of the square tube 15 is fixedly connected to the upper end of the sliding plate 5. The limit plate 30 is slidably fitted inside the square tube 15. A limiting mechanism is provided between the connecting rod 24 and the sliding plate 5.

[0034] The limiting mechanism includes two square grooves 21 and four triangular grooves 29. The two square grooves 21 are symmetrically opened on the inner wall of the sliding plate 5 corresponding to the connecting rod 24. Fixed blocks 20 are fixedly connected to the inner walls of the two square grooves 21. Connecting columns 28 are slidably inserted through the inner walls of the two fixed blocks 20. The corresponding ends of the two connecting columns 28 are elastically connected with trapezoidal blocks 25 through elastic components. Two of the triangular grooves 29 are symmetrically opened at the front end of the connecting rod 24 up and down, and the other two triangular grooves 29 are symmetrically opened at the rear end of the connecting rod 24 up and down. The two trapezoidal blocks 25 are respectively in sliding fit with the two triangular grooves 29 located below.

[0035] The limiting mechanism further includes two L-shaped rods 22 and two L-shaped grooves 17 (in combination with Figure 3 and Figure 8 ), the two L-shaped rods 22 are respectively fixedly connected to the far ends of the two connecting columns 28. The two L-shaped grooves 17 are respectively opened on the inner wall of the sliding plate 5 corresponding to the two L-shaped rods 22. The two L-shaped grooves 17 are respectively communicated with the two square grooves 21. The two L-shaped rods 22 are respectively in sliding fit with the two L-shaped grooves 17. The tops of the two L-shaped rods 22 are fixedly connected with magnetic rods 16. Magnetic force components are provided on the movement paths of the two magnetic rods 16.

[0036] The elastic component includes a sliding block 26, which is fixedly connected to one end of the connecting column 28 corresponding to the trapezoidal block 25. The sliding block 26 is slidably engaged with the square groove 21. A second spring 27 is fixedly connected between the sliding block 26 and the fixed block 20. The second spring 27 is slidably sleeved on the outer wall of the connecting column 28.

[0037] The magnetic component includes a splicing plate 14, which is fixedly connected to the inner vertical surface of the combined box 1 near the lower edge. Symmetrically fixed to the lower end of the splicing plate 14 are magnetic blocks 13, and the positions of the two magnetic blocks 13 correspond to those of the two magnetic rods 16.

[0038] In this embodiment, when a fault occurs in the transformer box 2 inside the combined box 1, first open the corresponding box door, and then start the motor 9. The motor 9 can drive the screw column 7 to rotate on the corresponding U-shaped block 12. The screw column 7 can drive the connecting plate 8 to move out of the combined box 1. Moreover, the connecting plate 8 will also slide on the outer wall of the limiting column 37. The connecting plate 8 can drive the sliding plate 5 to slide in the groove 4 inside the combined box 1. The sliding plate 5 can drive the transformer box 2, the concave plate 32, the concave-shaped plate 23, and the four magnetic rods 16 and other components connected to the sliding plate 5 to move out of the combined box 1 together. The rollers 6 on the concave plate 32 and the concave-shaped plate 23 will roll in the groove 4 accordingly.

[0039] Among the four magnetic rods 16, each adjacent pair of magnetic rods 16 will pass outside the corresponding two magnetic blocks 13, and each adjacent pair of magnetic rods 16 will pass outside the corresponding two magnetic blocks 13 (as Figure 3As shown in the figure, when two adjacent magnetic rods 16 at each location move outside the corresponding two magnetic blocks 13, the two magnetic rods 16 repel the two magnetic blocks 13 magnetically respectively. Then, the two adjacent magnetic rods 16 at each location will move away from each other and slide in the corresponding L-shaped grooves 17. Then, the two adjacent magnetic rods 16 at each location will drive the connecting columns 28 connected thereto to slide away from the corresponding connecting rods 24 in the corresponding fixing blocks 20. Each connecting column 28 will drive the sliding block 26 connected thereto to slide away from the corresponding connecting rod 24 in the corresponding square groove 21. Each sliding block 26 will squeeze the second spring 27 connected to the corresponding fixing block 20, and each sliding block 26 will drive the trapezoidal block 25 connected thereto to leave the corresponding triangular groove 29 on the connecting rod 24. Then, at this time, the two connecting rods 24 will both lose the restriction of the corresponding two trapezoidal blocks 25. Then, the two first springs 19 in the compressed state will automatically expand, and the two first springs 19 will push the corresponding limit plates 30 connected thereto downward until they fit on the upper end of the sliding plate 5. Then, the connecting rods 24 connected under the two limit plates 30 will slide downward in the inner wall of the sliding plate 5, and drive the concave plates 23 connected to the lower ends of the two connecting rods 24 to move downward. And at this time, the rollers 6 on the concave plate 23 also just move outside the combination box 1. Then, the rollers 6 on the concave plate 23 will just closely fit on the external ground, and at this time, the two triangular grooves 29 located above each connecting rod 24 will respectively correspond to the corresponding two trapezoidal blocks 25.

[0040] When two adjacent magnetic rods 16 at each location have both moved past the corresponding two magnetic blocks 13, then, under the action of the second spring 27 at this time, the two adjacent magnetic rods 16 at each location, the two adjacent connecting columns 28, the two adjacent sliding blocks 26, and the two adjacent trapezoidal blocks 25 will automatically move closer to each other. And the two adjacent trapezoidal blocks 25 at each location will automatically insert into the two triangular grooves 29 located above the corresponding connecting rod 24. Then, the downward movement of the sliding plate 5 will be restricted by the four trapezoidal blocks 25. And at this time, one side of the lower end of the sliding plate 5 is supported on the ground by a roller 6, and the other side of the lower end of the sliding plate 5 is supported on the combination box 1 by another roller 6. Then, the load-bearing capacity and stability of the sliding plate 5 moving out of the combination box 1 will be greatly improved, avoiding the difficulty of the sliding plate 5 stably bearing the weight of the transformer box 2 due to a single support point. The two support points can stably support the heavy transformer box 2. Finally, until the sliding plate 5 drives the transformer box 2 to move to the maximum distance outside the combination box 1. Then, the operation space for disassembly and assembly is expanded at this time, and the field of vision is wide, thus facilitating disassembly, assembly and maintenance.

[0041] It should be noted that after the transformer box 2 is disassembled, repaired and reinstalled, the two motors 9 are used to drive the two studs 7 to reverse. Then, the sliding plate 5 can drive the components connected to the sliding plate 5, such as the transformer box 2, the concave plate 32, the concave-shaped plate 23 and the four magnetic rods 16, etc., to move into the combination box 1 together. By the same token, every two adjacent magnetic rods 16 will pass outside the corresponding two magnetic blocks 13, and will move away from each other to drive the two adjacent trapezoidal blocks 25 at each place to leave the two triangular grooves 29 located above on the corresponding connecting rods 24 respectively. And at this time, the rollers 6 on the concave-shaped plate 23 will roll upward along the groove 4 close to the inclined edge of the door of the combination box 1, so as to drive the concave-shaped plate 23 and the two connecting rods 24 to move upward. Then, the two connecting rods 24 will drive the limit plates 30 they are connected to squeeze the first springs 19 connected to the corresponding square tubes 15. And at this time, the two triangular grooves 29 located below on the two connecting rods 24 will correspond to the corresponding two trapezoidal blocks 25 respectively. Until the rollers 6 on the concave-shaped plate 23 roll into the groove 4, at this time, every two adjacent magnetic rods 16 will move past the corresponding two magnetic blocks 13, then every two adjacent magnetic blocks 13 will automatically insert into the two triangular grooves 29 located below on each connecting rod 24. Until the sliding plate 5 drives the transformer box 2 to completely move into the combination box 1, at this time, all the components will return to their original positions, as Figure 1 - Figure 8 shown.

[0042] Embodiment 2: Please refer to Figure 2 、 Figure 4 、 Figure 6 、 Figure 7 and Figure 9 . The positioning mechanism includes two triangular plates 33 and four guide posts 10. The two triangular plates 33 are respectively fixedly connected to the front and rear ends of the transformer box 2 near the upper edge. The four guide posts 10 are paired in two and are respectively fixedly connected to the front and rear edges of the lower end of the box cover 11. The four guide posts 10 all movably penetrate through the outer extension of the upper end of the transformer box 2. The lower ends of the two guide posts 10 located in the front and the lower ends of the two guide posts 10 located in the rear are respectively fixedly connected with square shells 18. Inside the two square shells 18, trapezoidal plates 34 are slidably installed through elastic mechanisms. The two trapezoidal plates 34 correspond to the two triangular plates 33 in position.

[0043] The elastic mechanism includes two splicing columns 36 (as Figure 7 shown), the two splicing columns 36 are symmetrically slidably inserted into the inner walls of the square shells 18 far from the trapezoidal plates 34. One ends of the two splicing columns 36 located inside the square shells 18 are fixedly connected to the vertical surfaces of the trapezoidal plates 34. The other ends of the two splicing columns 36 are fixedly connected to a square frame 31 together. Spring three 35 are slidably sleeved on the outer walls of the two splicing columns 36. The two spring three 35 are fixedly connected between the vertical surfaces of the trapezoidal plates 34 and the inner walls of the square shells 18.

[0044] In this embodiment, when the transformer box 2 is moved out of the combined box 1 to the maximum distance, the screws connecting the box cover 11 and the transformer box 2 can be removed one by one at this time (the screws are not shown in the figure, which is a well-known prior art and will not be elaborated here). Subsequently, with the help of a crane, the box cover 11 is lifted, and the box cover 11 will drive the iron core and the winding to move upward together. Moreover, the box cover 11 will drive the four guide posts 10 to slide upward within the upper extension part of the transformer box 2. Among the four guide posts 10, each adjacent pair of guide posts 10 will drive a square shell 18 and the trapezoidal plate 34 inside the square shell 18 to move upward together. The inclined surfaces of the two trapezoidal plates 34 will move upward to respectively press against the inclined surfaces of the two triangular plates 33 on the transformer box 2. Then, under the action of the pressing force, each trapezoidal plate 34 will slide into the corresponding square shell 18, and drive the two splicing columns 36 connected thereto to slide away from the transformer box 2 within the corresponding square shell 18, and will press the two springs three 35 connected correspondingly. Moreover, the two splicing columns 36 will drive the square frame 31 to move together until the two trapezoidal plates 34 move past their respective corresponding triangular plates 33. Then, at this time, under the action of the spring three 35, the two trapezoidal plates 34 will reset and move out of the corresponding square shells 18, and at this time, the lower ends of the two trapezoidal plates 34 will respectively fit against the upper ends of the two triangular plates 33. At this time, with the support of the two trapezoidal plates 34 and the two triangular plates 33, the box cover 11 can support the box cover 11, the iron core and the winding. At this time, it is convenient to carry out the maintenance operation. Moreover, under the action of the four guide posts 10, the box cover 11, the iron core and the winding will not shake during the maintenance process, which is beneficial to the maintenance operation.

[0045] After the maintenance is completed, only two staff members need to pull the two square frames 31 outwards respectively to drive the lower ends of the two trapezoidal plates 34 to leave the upper ends of the two triangular plates 33 respectively. Subsequently, the box cover 11, the iron core and the winding are lowered by the crane. Then, under the guiding action of the four guide posts 10, the box cover 11, the iron core and the winding can be accurately reinstalled without the need for the staff to control the positioning, that is, the accurate installation operation after the box cover 11, the iron core and the winding are disassembled is very convenient and brings convenience.

[0046] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined transformer that is easy to disassemble and overhaul, comprising a combined box (1), a transformer box (2) arranged inside the combined box (1), and a box cover (11) installed on the upper end of the transformer box (2), characterized in that: The lower end of the transformer box (2) is symmetrically fixedly connected to a steel frame (3), and the lower ends of the two steel frames (3) are commonly fixedly connected to a slide plate (5). A groove (4) is provided at the inner bottom end of the combined box (1) corresponding to the slide plate (5), and the groove (4) and the slide plate (5) are slidably matched. A driving mechanism is provided between the slide plate (5) and the combined box (1). A concave plate (32) is fixedly connected to the edge of one side of the lower end of the slide plate (5), and a concave plate (23) is fitted to the edge of the other side of the lower end of the slide plate (5). The inner walls of the concave plate (23) and the concave plate (32) are rotatably connected to rollers (6), and the two rollers (6) are fitted to the bottom of the groove (4). Self-adjusting mechanisms are provided between the front and rear edges of the upper end of the concave plate (23) and the slide plate (5), and a positioning mechanism is provided between the box cover (11) and the transformer box (2); The self-adjusting mechanism comprises a connecting rod (24), wherein the connecting rod (24) is fixedly connected to the upper end of the concave plate (23), the connecting rod (24) movably passes through the upper end of the slide plate (5), the upper end of the connecting rod (24) is fixedly connected to a limiting plate (30), the upper end of the limiting plate (30) is fixedly connected to a spring 1 (19), the upper end of the spring 1 (19) is fixedly connected to a square tube (15), the lower end of the square tube (15) is fixedly connected to the upper end of the slide plate (5), the limiting plate (30) is slidably fitted inside the square tube (15), and a limiting mechanism is provided between the connecting rod (24) and the slide plate (5).

2. A combined transformer that is easy to disassemble and repair according to claim 1, characterized in that: The groove (4) is arranged obliquely near the edge of the door of the combined box (1).

3. The combined transformer that is easy to disassemble and repair according to claim 1 is characterized in that: The driving mechanism comprises a motor (9) and a limiting column (37); the motor (9) is fixedly mounted at the bottom end of the assembly box (1) near the concave plate (32); one end of the limiting column (37) is fixedly connected to the inner wall of the assembly box (1) away from the motor (9); a stud (7) is fixedly connected to the output shaft end of the motor (9); the transformer box (2) is located between the stud (7) and the limiting column (37); and the stud (7) and the limiting column (37) are located between the stud (7) and the limiting column (37). The studs (7) and the limiting columns (37) are arranged to correspond to each other, one end of the stud (7) and the limiting column (37) near the door of the combined box (1) are both rotatably connected to a U-shaped block (12), the lower ends of the two U-shaped blocks (12) are both fixedly connected to the inner bottom end of the combined box (1), the outer wall of the studs (7) near the motor (9) is commonly threadedly sleeved with a connecting plate (8), the limiting column (37) movably penetrates the connecting plate (8), and the lower end of the connecting plate (8) is fixedly connected to the upper end of the slide plate (5).

4. The combined transformer that is easy to disassemble and repair according to claim 1 is characterized in that: The limiting mechanism comprises two square grooves (21) and four triangular grooves (29), wherein the two square grooves (21) are symmetrically arranged on the inner wall of the slide plate (5) corresponding to the connecting rod (24), the inner walls of the two square grooves (21) are fixedly connected with a fixing block (20), the inner walls of the two fixing blocks (20) are slidably interspersed with a connecting column (28), and the corresponding ends of the two connecting columns (28) are elastically connected with a trapezoidal block (25) through an elastic component, wherein two triangular grooves (29) are symmetrically arranged on the front end of the connecting rod (24) in the upper and lower parts, and the other two triangular grooves (29) are symmetrically arranged on the rear end of the connecting rod (24) in the upper and lower parts, and the two trapezoidal blocks (25) are respectively slidably matched with the two triangular grooves (29) located below.

5. The combined transformer that is easy to disassemble and repair according to claim 4 is characterized in that: The limiting mechanism further comprises two L-shaped rods (22) and two L-shaped grooves (17); the two L-shaped rods (22) are respectively fixedly connected to the ends of the two connecting columns (28) that are away from each other; the two L-shaped grooves (17) are respectively arranged on the inner wall of the slide plate (5) corresponding to the two L-shaped rods (22); the two L-shaped grooves (17) are respectively connected to the two square grooves (21); the two L-shaped rods (22) are respectively slidably matched with the two L-shaped grooves (17); the top ends of the two L-shaped rods (22) are both fixedly connected to magnetic rods (16); and magnetic components are respectively arranged on the movement paths of the two magnetic rods (16).

6. The combined transformer that is easy to disassemble and repair according to claim 4 is characterized in that: The elastic component comprises a sliding block (26), the sliding block (26) is fixedly connected to one end of the connecting column (28) corresponding to the trapezoidal block (25), the sliding block (26) and the square groove (21) are slidably matched, a second spring (27) is fixedly connected between the sliding block (26) and the fixed block (20), and the second spring (27) is slidably sleeved on the outer wall of the connecting column (28).

7. The combined transformer that is easy to disassemble and repair according to claim 5 is characterized in that: The magnetic assembly comprises a splicing plate (14), the splicing plate (14) being fixedly connected to the inner vertical surface of the combined box (1) near the lower edge, the lower end of the splicing plate (14) being symmetrically fixedly connected with a magnetic block (13), and the positions of the two magnetic blocks (13) and the two magnetic rods (16) corresponding to each other.

8. The combined transformer that is easy to disassemble and repair according to claim 1 is characterized in that: The positioning mechanism comprises two triangular plates (33) and four guide pillars (10), the two triangular plates (33) are respectively fixedly connected to the front and rear ends of the transformer box (2) near the upper edge, the four guide pillars (10) are respectively fixedly connected to the front and rear edges of the lower end of the box cover (11) in pairs, the four guide pillars (10) are all movably passed through the upper extension of the transformer box (2), the lower ends of the two guide pillars (10) located in the front and the lower ends of the two guide pillars (10) located in the rear are respectively fixedly connected to a square shell (18), the interiors of the two square shells (18) are both slidably mounted with a trapezoidal plate (34) through an elastic mechanism, and the two trapezoidal plates (34) correspond to the positions of the two triangular plates (33) respectively.

9. The combined transformer that is easy to disassemble and repair according to claim 8 is characterized in that: The elastic mechanism comprises two splicing columns (36), the two splicing columns (36) are symmetrically slidably inserted into the inner wall of the square shell (18) away from the trapezoidal plate (34), one end of the two splicing columns (36) located on the inner side of the square shell (18) is fixedly connected to the vertical surface of the trapezoidal plate (34), and the other ends of the two splicing columns (36) are commonly fixedly connected to the square frame (31), and springs (35) are slidably sleeved on the outer walls of the two splicing columns (36), and the two springs (35) are fixedly connected between the vertical surface of the trapezoidal plate (34) and the inner wall of the square shell (18).

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