A dry-type transformer

Abstract

The present invention relates to the field of dry-type transformers and discloses a dry-type transformer, comprising a mounting frame and a transformer body, wherein the transformer body is arranged in the mounting frame, and tilting structures are arranged on both sides of the front side of the mounting frame. The tilting structure is used to directly tilt the transformer body on the inner wall of the mounting frame, and the tilting structure uses the "lever" principle to tilt the transformer body, which is more labor-saving when tilting. During the tilting process, the transformer body automatically drives the support structure to move and support the transformer body through the driving structure, and after tilting, the L-shaped plate on the tilting structure can be rotated to tighten the L-shaped plate to the transformer body. In this way, the support structure can be used to realize the installation of the transformer body, the operation is more labor-saving and convenient, and the installation efficiency is higher. In addition, the tilting structure can be used not only to tilt the transformer body, but also to tighten and limit the transformer body on the support structure. The structure is simple and the function is practical.

Description

Technical Field

[0001] The present invention relates to the technical field of dry-type transformers, and in particular to a dry-type transformer. Background Art

[0002] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery and other places. Simply put, dry-type transformers refer to transformers whose cores and windings are not immersed in insulating oil;

[0003] In the prior art dry-type transformer, as the pressure-bearing member moves downward, the limiting member continuously rotates in the placement groove and approaches the high-voltage coil. As the high-voltage coil moves downward, the limiting member rotates and continuously squeezes the high-voltage coil. Multiple limiting members contact the high-voltage coil and simultaneously squeeze the high-voltage coil to prevent the inner ring of the high-voltage coil from deviating from the proper distance from the iron core, which causes the inner ring of the high-voltage coil to be too close to the iron core and affects the installation of the low-voltage coil later.

[0004] Since the transformer body is fixedly installed on the base, it is necessary to move the transformer body to the base during installation. Since the overall weight of the transformer body is heavy, it is time-consuming and labor-intensive to move it directly by manual labor. If it is moved by handling equipment, the installation cost of the transformer body will increase. Therefore, there is room for improvement. Summary of the Invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a dry-type transformer.

[0006] The present invention provides a dry-type transformer adopting the following technical solution:

[0007] A dry-type transformer comprises a mounting frame and a transformer body, wherein the transformer body is arranged in the mounting frame, both sides of the front side of the mounting frame are provided with a tilting structure, and both sides of the left and right sides of the mounting frame are provided with a supporting structure;

[0008] The cam is secured to the bottom of the second support frame by a spring, and the cam is secured to the bottom of the second support frame by a spring.

[0009] Preferably, the rotating structure includes a first groove formed on the inner wall of the right end of the front opening, a rotating shaft rotates through the first groove, and the rotating block is fixedly sleeved on the rotating shaft.

[0010] Preferably, the first positioning structure includes a second groove provided on the inner wall at the left end of the front opening, one end of the second connecting plate is inserted into the second groove, an extrusion portion is provided at the left end of the rear edge of the second connecting plate, a through groove is provided on the mounting frame above the second groove, the first positioning plate is movable through the through groove, the bottom end surface of the first positioning plate is an inclined surface, a fixing rod is movable through both ends of the first positioning plate, the top end of the fixing rod is connected to the top strip, a first spring is sleeved on the fixing rod, the two ends of the first spring are respectively connected to the top strip and the first positioning plate, and the bottom end of the first positioning plate is inserted into the first positioning groove provided on the second connecting plate 17.

[0011] Preferably, the support structure includes a through groove opened in the middle of the left and right side surfaces of the installation frame, a support plate is movable through the through groove, a barrier frame is provided on the part of the support plate inserted into the installation frame, and a limit plate is connected to one end of the support plate passing through the installation frame. A second positioning structure is provided on both sides of the left and right sides of the installation frame, and a driving structure is provided between the support plate and the sleeve plate.

[0012] Preferably, the driving structure includes a fixing bar connected to the front and rear sides of the support plate close to one side of the transformer body, one end of the fixing bar is connected to the driving frame, a driving rod is passed through the end of the sleeve close to the transformer body, one end of the driving rod is movably inserted into the driving frame, and a pulling structure is provided on the L-shaped plate.

[0013] Preferably, the second positioning structure includes third grooves formed on the front and rear sides of the upper groove wall of the through groove. The upper groove wall of the third groove passes through the second positioning plate movably. The top ends of each group of two second positioning plates are connected with a top plate. A plurality of second springs are connected between the lower surface of the top plate and the mounting frame. An extrusion wheel is installed at the bottom end of the second positioning plate. A fixing plate is installed on the upper surface of the support plate near the position of the third groove. One end face of the fixing plate close to the transformer body is an inclined surface. A second positioning groove is formed on the side surface of the fixing plate far from the transformer body.

[0014] Preferably, the adjusting structure includes an insertion plate connected to the end of the L-shaped plate close to the sleeve plate. A slot is formed at one end of the sleeve plate for the insertion plate to movably insert into. Fixed blocks are arranged at the mutually close ends of the sleeve plate and the L-shaped plate. A screw rod is rotatably connected to the front side surface of the fixed block on the sleeve plate. The screw rod passes through a threaded groove formed in the other fixed block. A turntable is fixedly sleeved on the end of the screw rod far from the sleeve plate.

[0015] Preferably, the pulling structure includes a connecting rod movably passing through the L-shaped plate. A pulling bar is installed between the front ends of each group of two connecting rods. The connecting rod movably passes through the insertion plate. The connecting rod movably inserts into the sleeve plate. One end of the connecting rod is fixedly connected to a driving rod. The driving rod movably passes through the sleeve plate. A third spring is sleeved on the part of the connecting rod passing through the L-shaped plate. The two ends of the third spring are respectively connected to the pulling bar and the L-shaped plate.

[0016] In summary, the present invention includes the following beneficial technical effects:

[0017] By providing a tilting structure, a supporting structure and a driving structure, when installing the transformer body on the mounting frame, only need to use the tilting structure to directly tilt the transformer body on the inner wall of the mounting frame, and the tilting structure uses the "lever" principle to tilt the transformer body, which is more labor-saving when tilting. During the tilting process of the transformer body, the supporting structure is automatically driven by the driving structure to move and support on the transformer body. And after tilting, the L-shaped plate on the tilting structure can also be rotated and tightened to the transformer body. In this way, cooperating with the supporting structure, the installation work of the transformer body can be realized, the operation is more labor-saving and convenient, the installation efficiency is higher, and the tilting structure can not only be used to tilt the transformer body, but also can tighten and limit the transformer body on the supporting structure, with simple structure and practical function;

[0018] By providing a rotating structure and a first positioning structure, after releasing the positioning of the second rotating rod by the first positioning structure and then using the rotating structure, the second rotating rod can be directly rotated open on the mounting frame to open the opening on the front side of the mounting frame, which is convenient to move the mounting frame to sleeve on the transformer body for installing the transformer body;

[0019] By providing a second positioning structure, when the support structure supports the transformer main body, the support structure supported on the transformer main body can be positioned on the installation frame through the second positioning structure. By providing an adjustment structure, when one end of the L-shaped plate rotates to the upper surface of the transformer main body, the adjustment structure can be used to tighten one end of the L-shaped plate to the transformer main body to limit the upper surface of the installed transformer main body, making the installation of the transformer main body more firm. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of a dry-type transformer in an embodiment of the present invention;

[0021] Figure 2 is in an embodiment of the present invention Figure 1 Enlarged view of the structure at A;

[0022] Figure 3 is in an embodiment of the present invention Figure 1 Enlarged view of the structure at B;

[0023] Figure 4 is a schematic structural diagram of the installation frame in an embodiment of the present invention;

[0024] Figure 5 is in an embodiment of the present invention Figure 4 Enlarged view of the structure at C;

[0025] Figure 6 is in an embodiment of the present invention Figure 4 Enlarged view of the structure at D;

[0026] Figure 7 is in an embodiment of the present invention Figure 4 Enlarged view of the structure at E;

[0027] Figure 8 is in an embodiment of the present invention Figure 4 Enlarged view of the structure at F.

[0028] Description of the Reference Numerals: 1. Installation frame; 2. Transformer main body; 3. Opening; 4. First rotating rod; 5. Rotating block; 6. Second rotating rod; 7. Sleeve plate; 8. L-shaped plate; 9. Pressing rod; 10. Intermediate sleeve; 11. Tilting plate; 12. Tilting rod; 13. First connecting plate; 14. First groove; 15. Rotating shaft; 16. Second groove;

[0029] 17. Second connecting plate; 18. Extrusion part; 19. Through slot; 20. First positioning plate; 21. Fixed rod; 22. First spring; 23. Top strip; 24. Support plate; 25. Limit plate; 26. Barrier frame; 27. Through slot; 28. Fixed strip; 29. Driving frame; 30. Driving rod; 31. Third groove; 32. Second positioning plate; 33. Top plate; 34. Second spring; 35. Extrusion wheel; 36. Fixed plate; 37. Second positioning slot; 38. Connecting rod; 39. Pulling strip; 40. Third spring; 41. Insert plate; 42. Slot; 43. Fixed block; 44. Screw; 45. Turntable. DETAILED DESCRIPTION

[0030] The following is combined with Figures 1 - 8 The present invention is described in further detail.

[0031] Reference Figures 1 - 8 The embodiment of the present invention discloses a dry-type transformer, comprising a mounting frame 1 and a transformer body 2. The transformer body 2 is arranged in the mounting frame 1. Both sides of the front side of the mounting frame 1 are provided with a warping structure, and both sides of the left and right sides of the mounting frame 1 are provided with a supporting structure.

[0032] The tilting structure includes an opening 3 formed in the middle of the front and rear side surfaces of the mounting frame 1. A first rotating rod 4 is rotatably connected between the inner walls at both ends of the rear opening 3. A rotating block 5 is arranged on the right inner wall of the front opening 3 through a rotating structure. One end of the rotating block 5 is rotatably connected to a second rotating rod 6. One end of the second rotating rod 6 is rotatably connected to a second connecting plate 17. A first positioning structure is arranged between the second connecting plate 17 and the mounting frame 1. Sleeve plates 7 are fixedly sleeved on both ends of the first rotating rod 4 and the second rotating rod 6. One end of the sleeve plate 7 is provided with an L-shaped plate 8 through an adjusting structure. A pressing rod 9 is fixedly connected between each group of two L-shaped plates 8. Intermediate sleeves 10 are fixedly sleeved in the middle of the first rotating rod 4 and the second rotating rod 6. A tilting plate 11 is connected to the intermediate sleeve 10. A tilting rod 12 is installed at one end of the tilting plate 11. The tilting rod 12 is arranged below the transformer body 2. The tilting rod 12 is a cylindrical rod. A first connecting plate 13 is connected to the side of the intermediate sleeve 10 away from the tilting rod 12. Both ends of the first connecting plate 13 are fixedly connected to the sleeve plate 7. When installing the transformer body 2 on the mounting frame 1, move the mounting frame 1 to the location of the transformer body 2. The tilting rods 12 on the two tilting plates 11 are located below the transformer body 2. At this time, two installers respectively hold the two pressing rods 9. By pressing down the two pressing rods 9, the two groups of sleeve plates 7 are driven to rotate respectively around the first rotating rod 4 and the second rotating rod 6, thus driving the tilting plate 11 and the tilting rod 12 to rotate upward as a whole, so as to tilt the transformer body 2 on the ground. Support the tilted transformer body 2 through the support structure, and then the transformer body 2 can be installed on the mounting frame 1. The tilting of the transformer body 2, through the "lever" principle, makes it more labor-saving and convenient to tilt the transformer body 2, improving the installation work efficiency of the transformer body 2.

[0033] See Figure 1 , Figure 4 , Figure 7 and Figure 8 The rotating structure includes a first groove 14 formed in the right inner wall of the front opening 3. A rotating shaft 15 rotatably passes through the first groove 14. The rotating block 5 is fixedly sleeved on the rotating shaft 15.

[0034] The first positioning structure includes a second groove 16 formed in the inner wall at the left end of the front opening 3. One end of the second connecting plate 17 is inserted into the second groove 16. An extrusion portion 18 is provided at the left end of the rear edge on the second connecting plate 17. A through groove 19 is formed in the upper surface of the mounting frame 1 above the second groove 16. A first positioning plate 20 passes through the through groove 19 movably. The bottom end surface of the first positioning plate 20 is an inclined surface. Fixing rods 21 pass through both ends of the upper surface of the first positioning plate 20 movably. The top ends of the fixing rods 21 are connected to a top bar 23. A first spring 22 is sleeved on the fixing rods 21. Both ends of the first spring 22 are connected to the top bar 23 and the first positioning plate 20 respectively. By pulling the first positioning plate 20 upward with the top bar 23, the bottom end of the first positioning plate 20 is inserted into a first positioning groove formed in the upper surface of the second connecting plate 17. When the bottom end of the first positioning plate 20 is pulled out from the first positioning groove on the second connecting plate 17, the positioning of the second connecting plate 17 on the mounting frame 1 is released. Then, with the rotating shaft 15 as the axis, the rotating block 5 is rotated, and the rotating block 5, the second rotating rod 6 and the second connecting plate 17 are rotated out from the mounting frame 1, thereby exposing the opening 3 at the front side of the mounting frame 1. This facilitates moving the mounting frame 1 to the periphery of the transformer body 2, thus facilitating the tilting operation of the transformer body 2.

[0035] See Figure 1 , Figure 4 , Figure 5 and Figure 6 , the support structure includes through grooves 27 formed in the middle of the left and right side surfaces of the mounting frame 1. A support plate 24 passes through the through grooves 27 movably. A shielding frame 26 is provided on the part of the upper surface of the support plate 24 inserted into the mounting frame 1. A limiting plate 25 is connected to the end of the support plate 24 passing through the mounting frame 1. Second positioning structures are provided at both the left and right sides of the mounting frame 1. A driving structure is provided between the support plate 24 and the sleeve plate 7;

[0036] The driving structure includes fixing bars 28 connected to the front and rear side surfaces of the support plate 24 close to the transformer body 2. A driving frame 29 is connected to one end of the fixing bars 28. A driving rod 30 passes through the end of the sleeve plate 7 close to the transformer body 2. One end of the driving rod 30 is inserted into the driving frame 29 movably. A pulling structure is provided on the L-shaped plate 8;

[0037] The second positioning structure includes third grooves 31 opened on the front and rear sides of the upper groove wall of the through groove 27. The upper groove wall of the third groove 31 movably passes through the second positioning plates 32. The tops of each group of two second positioning plates 32 are connected with a top plate 33. A plurality of second springs 34 are connected between the lower surface of the top plate 33 and the mounting frame 1. The bottom ends of the second positioning plates 32 are provided with pressing wheels 35. A fixing plate 36 is installed on the upper surface of the support plate 24 near the position of the third groove 31. The end face of the fixing plate 36 close to one end of the transformer body 2 is an inclined surface. A second positioning groove 37 is opened on the side surface of the fixing plate 36 far from the transformer body 2. When pressing down the pressing rod 9 to drive the sleeve plate 7 to rotate and lift the transformer body 2, the sleeve plate 7 drives one end of the driving rod 30 to slide upward in the driving frame 29. Through the extrusion of the inner wall of the driving frame 29 by the driving rod 30, when the transformer body 2 is lifted, the two support plates 24 can be driven to move in the direction of approaching each other on the mounting frame 1 at the same time. When the two support plates 24 move downward to support under the transformer body 2, the shielding frame 26 on the support plate 24 abuts against the side surface of the transformer body 2, so as to realize the installation of the transformer body 2 on the mounting frame 1. Moreover, the support plates 24 move on the mounting frame 1 in the direction of approaching the transformer body 2, driving one end of the inclined surface of the fixing plate 36 to press against the pressing wheel 35, so as to push the second positioning plate 32 to move upward, driving the second spring 34 to stretch. When the support plates 24 move downward to support on the transformer body 2, the second positioning groove 37 on the fixing plate 36 moves to the position directly below the pressing wheel 35. Under the pulling force of the second spring 34, the pressing wheel 35 and the bottom end of the second positioning plate 32 are pulled into the second positioning groove 37 to position the support plates 24 on the mounting frame 1, increasing the firmness of the installation of the transformer body 2 on the mounting frame 1.

[0038] See Figures 1 - 3 , the adjusting structure includes an insertion plate 41 connected to the end of the L-shaped plate 8 close to the sleeve plate 7. A slot 42 for the insertion plate 41 to movably insert is opened at one end of the sleeve plate 7. Fixed blocks 43 are arranged at the ends of the sleeve plate 7 and the L-shaped plate 8 close to each other. A screw rod 44 is rotatably connected to the front side of the fixed block 43 on the sleeve plate 7. The screw rod 44 passes through a threaded groove opened on the other fixed block 43. A turntable 45 is fixedly sleeved on the end of the screw rod 44 far from the sleeve plate 7;

[0039] The pulling structure includes a connecting rod 38 that movably passes through the L-shaped plate 8. A pulling bar 39 is installed between the front ends of two connecting rods 38 in each group. The connecting rod 38 movably passes through the insertion plate 41 and movably inserts into the sleeve plate 7. One end of the connecting rod 38 is fixedly connected to the driving rod 30, and the driving rod 30 movably passes through the sleeve plate 7. A third spring 40 is sleeved on the part of the connecting rod 38 that passes through the L-shaped plate 8, and both ends of the third spring 40 are respectively connected to the pulling bar 39 and the L-shaped plate 8. When using the pressing rod 9 to drive the tilting rod 12 to rotate and tilt the transformer body 2, when using the pulling bar 39 to pull the driving rod 30 at one end of the connecting rod 38 out of the driving frame 29, the sleeve plate 7 is reversely rotated by using the pressing rod 9, and one end of the L-shaped plate 8 is rotated upwards to abut tightly against the upper surface of the transformer body 2. At the upper surface of the transformer body 2, the transformer body 2 is limited. Then, the rotary table 45 is used to rotate the screw rod 44, driving the insertion plate 41 at the other end of the L-shaped plate 8 to move in the slot 42 on the sleeve plate 7, so as to tighten one end of the L-shaped plate 8 on the transformer body 2, improving the installation firmness of the transformer body 2 on the installation frame 1. And by using the movement of the insertion plate 41 on the sleeve plate 7, the overall length of the sleeve plate 7 and the L-shaped plate 8 can also be adjusted according to actual needs, making it more labor-saving when tilting the transformer body 2.

[0040] The implementation principle of a dry-type transformer in an embodiment of the present invention is as follows: First, move the mounting frame 1 from the front opening 3 of the mounting frame 1 to the outside of the transformer body 2 to be installed. Then, rotate the rotating block 5, the first rotating rod 4, and the second connecting plate 17 as a whole around the rotating shaft 15 towards the mounting frame 1, and insert one end of the second connecting plate 17 into the second groove 16 on the mounting frame 1. During the process of inserting one end of the second connecting plate 17 into the second groove 16, the pressing part 18 on the second connecting plate 17 presses the inclined surface at the bottom of the first positioning plate 20, pushing the first positioning plate 20 to move upward on the mounting frame 1 and compressing the first spring 22. When the second connecting plate 17 is completely inserted into the second groove 16, under the pulling force of the first spring 22, the bottom end of the first positioning plate 20 is pulled into the first positioning groove on the second connecting plate 17 to position the second connecting plate 17, the first rotating rod 4, and the rotating block 5 as a whole that are rotated into the mounting frame 1. Then, two installers respectively hold two pressure rods 9 and drive the two sets of sleeve plates 7 to rotate around the first rotating rod 4 and the second rotating rod 6 by pressing down the two pressure rods 9, driving the lifting plate 11 and the lifting rod 12 to rotate upward as a whole, so as to lift the transformer body 2 on the ground. Through the "lever" principle, it is more labor-saving and convenient to lift the transformer body 2. And during the process of lifting the transformer body 2, the sleeve plate 7 drives one end of the driving rod 30 to slide upward in the driving frame 29. Through the extrusion of the driving rod 30 on the inner wall of the driving frame 29, when the transformer body 2 is lifted, the two support plates 24 can be driven to move in the direction of approaching each other on the mounting frame 1 at the same time. When the two support plates 24 move down and support under the transformer body 2, the shielding frame 26 on the support plates 24 abuts tightly against the side of the transformer body 2, thus realizing the installation work of the transformer body 2 on the mounting frame 1. And when the support plate 24 moves on the mounting frame 1 towards the direction close to the transformer body 2, it will drive the inclined surface at one end of the fixing plate 36 to press the pressing wheel 35, thereby pushing the second positioning plate 32 to move upward and driving the second spring 34 to stretch. When the support plate 24 moves down and supports on the transformer body 2, the second positioning groove 37 on the fixing plate 36 moves to the position directly below the pressing wheel 35. Under the pulling force of the second spring 34, the pressing wheel 35 and the bottom end of the second positioning plate 32 are pulled into the second positioning groove 37 to position the support plate 24 on the mounting frame 1. In this way, the transformer body 2 can be lifted, and the transformer body 2 is supported on the support plate 24. Then, when the driving rod 30 at one end of the connecting rod 38 is pulled out of the driving frame 29 by using the pulling strip 39, the sleeve plate 7 is rotated in the reverse direction by using the pressure rod 9, and one end of the L-shaped plate 8 is rotated upward and abuts tightly against the upper surface of the transformer body 2 to limit the transformer body 2 on the upper surface. Then, the screw 44 is rotated by using the turntable 45, driving the insertion plate 41 at the other end of the L-shaped plate 8 to move in the slot 42 on the sleeve plate 7, so as to tighten one end of the L-shaped plate 8 on the transformer body 2 and increase the installation firmness of the transformer body 2 on the mounting frame 1.In this way, the fixing and installation work of the transformer main body 2 can be carried out on the installation frame 1, and the operation is more labor-saving and convenient, and the installation work efficiency is higher.

[0041] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A dry-type transformer, comprising an installation frame (1) and a transformer body (2), characterized in that: A transformer body (2) is provided in the installation frame (1), both sides of the front side of the installation frame (1) are provided with a tilting structure, and both left and right sides of the installation frame (1) are provided with a supporting structure; The tilting structure comprises an opening (3) provided in the middle of the front and rear sides of the mounting frame (1); a first rotating rod (4) is rotatably connected between the inner walls at both ends of the rear opening (3); a rotating block (5) is provided on the right inner wall of the front opening (3) through a rotating structure; one end of the rotating block (5) is rotatably connected to a second rotating rod (6); one end of the second rotating rod (6) is rotatably connected to a second connecting plate (17); a first positioning structure is provided between the second connecting plate (17) and the mounting frame (1); both ends of the first rotating rod (4) and the second rotating rod (6) are fixedly sleeved with sleeve plates (7); one end of the sleeve plate (7) is adjusted by a locking mechanism. An L-shaped plate (8) is provided, and a pressure rod (9) is fixedly connected between each group of two L-shaped plates (8); an intermediate sleeve (10) is fixedly sleeved on the middle of the first rotating rod (4) and the second rotating rod (6); a tilting plate (11) is connected to the intermediate sleeve (10); a tilting rod (12) is installed at one end of the tilting plate (11); the tilting rod (12) is provided below the transformer body (2); the tilting rod (12) is a cylindrical rod; a first connecting plate (13) is connected to the side of the intermediate sleeve (10) away from the tilting rod (12); and both ends of the first connecting plate (13) are fixedly connected to the sleeve plate (7); The support structure comprises a through slot (27) provided in the middle of the left and right side surfaces of the installation frame (1), a support plate (24) is movably passed through the through slot (27), a barrier frame (26) is provided on the portion of the support plate (24) inserted into the installation frame (1), a limit plate (25) is connected to one end of the support plate (24) passing through the installation frame (1), a second positioning structure is provided on both the left and right sides of the installation frame (1), and a driving structure is provided between the support plate (24) and the sleeve plate (7); The driving structure includes a fixing bar (28) connected to the front and rear side surfaces of the support plate (24) near the transformer body (2), one end of the fixing bar (28) is connected to the driving frame (29), a driving rod (30) is passed through the end of the sleeve plate (7) near the transformer body (2), one end of the driving rod (30) is movably inserted into the driving frame (29), and a pulling structure is provided on the L-shaped plate (8).

2. A dry-type transformer according to claim 1, characterized in that: The rotating structure comprises a first groove (14) formed on the inner wall of the right end of the front opening (3); a rotating shaft (15) rotates through the first groove (14); and the rotating block (5) is fixedly sleeved on the rotating shaft (15).

3. A dry-type transformer according to claim 1, characterized in that: The first positioning structure includes a second groove (16) opened on the inner wall of the left end of the front opening (3). One end of the second connecting plate (17) is inserted into the second groove (16). An extrusion part (18) is arranged at the left end of the rear edge of the upper surface of the second connecting plate (17). A through groove (19) is opened on the upper surface of the mounting frame (1) above the second groove (16). A first positioning plate (20) movably passes through the through groove (19). The bottom end surface of the first positioning plate (20) is an inclined surface. Fixing rods (21) movably pass through both ends of the upper surface of the first positioning plate (20). The top ends of the fixing rods (21) are connected to a top bar (23). A first spring (22) is sleeved on the fixing rod (21). Both ends of the first spring (22) are respectively connected to the top bar (23) and the first positioning plate (20). The bottom end of the first positioning plate (20) is inserted into a first positioning groove opened on the upper surface of the second connecting plate (17).

4. A dry-type transformer according to claim 1, characterized in that: The second positioning structure includes third grooves (31) opened on the front and rear sides of the upper groove wall of the through groove (27). The second positioning plates (32) movably pass through the upper groove walls of the third grooves (31). The top ends of each group of two second positioning plates (32) are connected with a top plate (33). A plurality of second springs (34) are connected between the lower surface of the top plate (33) and the mounting frame (1). An extrusion wheel (35) is installed at the bottom end of the second positioning plate (32). A fixing plate (36) is installed on the upper surface of the support plate (24) near the position of the third groove (31). The end face of the fixing plate (36) close to the transformer body (2) is an inclined surface. A second positioning groove (37) is opened on the side surface of the fixing plate (36) far from the transformer body (2).

5. A dry-type transformer according to claim 1, characterized in that: The adjusting structure includes a plug board (41) connected to one end of the L-shaped plate (8) close to the sleeve plate (7). A slot (42) for the plug board (41) to movably insert is opened at one end of the sleeve plate (7). Fixing blocks (43) are arranged at the mutually close ends of the upper surfaces of the sleeve plate (7) and the L-shaped plate (8). A screw rod (44) is rotatably connected to the front side surface of the fixing block (43) on the sleeve plate (7). The screw rod (44) passes through a threaded groove opened on the other fixing block (43). A turntable (45) is fixedly sleeved on the end of the screw rod (44) far from the sleeve plate (7).

6. A dry-type transformer according to claim 1, characterized in that: The pulling structure includes a connecting rod (38) movably passing through the L-shaped plate (8). A pulling bar (39) is installed between the front ends of each group of two connecting rods (38). The connecting rod (38) movably passes through the plug board (41). The connecting rod (38) movably inserts into the sleeve plate (7). One end of the connecting rod (38) is fixedly connected to a driving rod (30). The driving rod (30) movably passes through the sleeve plate (7). A third spring (40) is sleeved on the part of the connecting rod (38) passing through the L-shaped plate (8). Both ends of the third spring (40) are respectively connected to the pulling bar (39) and the L-shaped plate (8).

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