Integrated current transformer

Abstract

The invention provides an integrated current transformer which comprises a mounting plate, two sets of shells are arranged on the surface of the mounting plate, a transformer body is mounted in the shells in an inserted mode, exposed grooves are formed in the front faces of the shells, wire inserting ends are arranged at the positions, corresponding to the exposed grooves, of the transformer body, and a translation assembly is arranged on the surface of the mounting plate. The translation assembly comprises a bidirectional screw, two ends of the bidirectional screw are rotatably mounted on the middle surface of the mounting plate through bearing seats, and compared with the prior art, the distance between the two groups of mutual inductors can be adjusted through the translation assembly, so that wiring is facilitated; the two mutual inductors parallel to the mounting plate can be rotated to be perpendicular to the mounting plate through the rotating assembly, so that different mounting requirements are met, in addition, the translation assembly can independently drive the mutual inductors to rotate, different positions face the front face, the interiors of the mutual inductors can be conveniently overhauled through maintenance windows at different positions, and the maintenance efficiency is improved. And the convenience in maintenance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of current transformers, in particular to a coupled current transformer. Background Art

[0002] The current transformer is an instrument that converts the primary side large current into the secondary side small current for measurement based on the principle of electromagnetic induction. The current transformer is composed of a closed iron core and a winding. Its primary side winding has very few turns and is connected in series in the circuit of the current to be measured. The combined current transformer is generally composed of multiple current transformer units. The high AC current conversion is very convenient and has strong functionality.

[0003] The coupled current transformers in the prior art are generally installed on a plane, mostly in a fixed manner. There are also some technologies that can separate the transformers by a certain distance, so as to facilitate wiring with cables in different positions and achieve convenience in wiring. However, this method still has limitations for the use of coupled current transformers and cannot meet the convenience in more directions and maintenance. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a combined current transformer to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. The distance between the two groups of transformers can be adjusted by a translation component to facilitate wiring. The two transformers parallel to the mounting plate can be rotated to be perpendicular to the mounting plate by a rotation component to meet different installation requirements. In addition, the translation component can independently drive the rotation of the transformer itself, with different positions facing the front, so as to facilitate the inspection of the interior through maintenance windows at different positions, thereby improving the convenience during maintenance.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a combined current transformer, including a mounting plate, two groups of shells are provided on the surface of the mounting plate, and the transformer body is plugged and installed inside the shell, an exposure groove is provided on the front of the shell, and a plug-in terminal is provided at the position corresponding to the exposure groove of the transformer body, a translation component is provided on the surface of the mounting plate, the translation component includes a bidirectional screw, both ends of the bidirectional screw are rotatably mounted on the middle surface of the mounting plate through a bearing seat, and two moving blocks are slidably sleeved on the surface of the bidirectional screw, a rotating component is installed on the top and bottom of the moving block, the rotating component includes a slider, an arc-shaped slide rail is fixed to the bottom of the moving block, and a slider is slidably connected inside the arc-shaped slide rail, an insert ring is fixed on the outer surface of the slider, a slide rod is slidably inserted between the two insert rings, a bottom block is rotatably mounted on the bottom of the shell through a bearing, and a connecting plate is fixed to one side of the bottom block, and the other end of the connecting plate is fixedly connected to the slider.

[0006] Furthermore, a gear is installed at the rotation connection between the shell and the bottom block, a sliding frame is fixed to one side of the bottom of the shell, and a toothed plate is slidably connected inside the sliding frame, and the toothed plate is meshed with the gear.

[0007] Furthermore, the translation assembly also includes a screw block, two screw blocks are symmetrically threaded on the surface of the bidirectional screw, and a connecting frame is fixed to the bottom of the screw block, and the connecting frame is L-shaped.

[0008] Furthermore, a first electric push rod is fixed to a position of the toothed plate on the horizontal surface of the bottom of the connecting frame, a plug hole is provided on the toothed plate at a position corresponding to the first electric push rod, and an extended end of the first electric push rod is inserted into the plug hole.

[0009] Furthermore, a second electric push rod is fixed on the front side of the screw block, and the position of the second electric push rod corresponds to the insertion hole of the tooth plate when the shell is rotated to be horizontal.

[0010] Furthermore, a moving groove is provided on the outer side of the arc-shaped slide rail, and the connecting plate slides along the moving groove.

[0011] Furthermore, a rod is threadedly inserted on the surface of the screw block, a threaded head is fixed on one end of the rod facing the moving block, and a screw hole is fixed at the position of the moving block corresponding to the threaded head of the rod, and the rod can be threadedly inserted on the surface of the moving block.

[0012] Furthermore, the rotating assembly also includes a vertical screw rod, the mounting plate is located at the top of the middle position of the bidirectional screw rod and is rotatably mounted with the vertical screw rod through a bearing seat, and a vertical block is threadedly sleeved on the surface of the vertical screw rod.

[0013] Furthermore, a connecting rod is rotatably mounted on the outer surface of the vertical block via a rotating shaft, and the other end of the connecting rod is rotatably mounted on the surface of the sliding rod located between the two insert rings via the rotating shaft.

[0014] Furthermore, maintenance windows are fixed on both sides of the shell by screws, and there is a rotation space between the shell and the mounting plate.

[0015] Beneficial effects of the present invention:

[0016] 1. The multiple maintenance windows of the present invention can cooperate with the rotation of the shell itself to realize the maintenance of the transformer body installed inside from different directions and positions. When the position of the shell is moved along the arc-shaped slide rail by the slider, the transformer body can be changed from a vertical state to a horizontal state. In this state, the transformer can be rotated again, exposing the slot and the opening of the plug-in terminal facing upward, so that the transformer can be used horizontally, or the mounting plate can be placed horizontally. According to different installation positions, the appropriate installation method is selected, and in the process of rotation and movement of the transformer body, the positions of the arc-shaped slide rail, the connecting frame and other structures can avoid the rotation of the shell, and there is enough rotation space to avoid the problem of rotation interference.

[0017] 2. When the bidirectional screw is rotated, only the screw block cooperates with the thread of the bidirectional screw. At this time, the movement of the screw block only drives the tooth plate to slide along the slide frame and mesh with the gear, driving the housing and the transformer body to rotate and adjust the angle. When it is necessary to adjust the distance between the two housings and the transformer, the long rod is rotated to fix one end of its threaded head on the moving block, and then the bidirectional screw is rotated again. The moving block is still driven to move together through the thread cooperation of the screw block and the bidirectional screw. The moving block will drive the arc-shaped slide rail at the bottom to move synchronously, maintain the stability of the connection between the connecting plate, the slide frame and the bottom block, and separate the two groups of transformers.

[0018] 3. The present invention inserts the connecting frame at the bottom of the screw block and the extended end of the first electric push rod into the socket of the tooth plate. At this time, the connecting frame can play a certain auxiliary supporting role on the bottom of the shell. When the bidirectional screw is rotated, the movement of the screw block will drive the movement of the tooth plate and engage with the gear, thereby changing the rotation direction of the mutual inductor, and the two groups of mutual inductor bodies can be rotated in opposite directions at the same time, with the exposed groove facing outward. When the mutual inductor rotates to a horizontal state, the position of the second electric push rod replaces the first electric push rod and corresponds to the position of the tooth plate socket. By inserting the second electric push rod into the tooth plate socket, the distance between the two mutual inductor bodies can still be adjusted by the bidirectional screw.

[0019] 4. Compared with the prior art, the present invention can adjust the distance between the two groups of mutual inductors through the translation component, thereby facilitating wiring, and can rotate the two mutual inductors parallel to the mounting plate to be perpendicular to the mounting plate through the rotation component, thereby meeting different installation requirements. In addition, the translation component can independently drive the rotation of the mutual inductor itself, with different positions facing the front, so as to facilitate the inspection of the interior through the maintenance windows at different positions, thereby improving the convenience during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a current transformer body and a mounting plate of a coupled current transformer of the present invention being arranged in parallel;

[0021] Figure 2A schematic diagram of a transformer body and a mounting plate of a coupled current transformer of the present invention being arranged vertically;

[0022] Figure 3 It is a schematic diagram of the structure of a rotating assembly of a coupled current transformer of the present invention;

[0023] Figure 4 It is a schematic diagram of the connection between the translation assembly and the bottom block of a coupled current transformer of the present invention;

[0024] Figure 5 This is a schematic diagram of the bottom structure of a shell of a coupled current transformer of the present invention;

[0025] Figure 6 It is a schematic structural diagram of a translation assembly of a coupled current transformer of the present invention;

[0026] Figure 7 A schematic diagram of the connection between a screw block and a bidirectional screw rod of a combined current transformer of the present invention;

[0027] Figure 8 The present invention is a schematic diagram of the connection between a screw block and a moving block of a coupled current transformer.

[0028] In the figure: 1. mounting plate; 2. housing; 21. exposed groove; 22. plug-in terminal; 23. maintenance window; 24. transformer body; 25. bottom block; 26. gear; 27. slide frame; 28. tooth plate; 3. translation assembly; 31. bidirectional screw; 32. arc-shaped slide rail; 33. connecting frame; 34. connecting plate; 35. moving groove; 36. screw block; 37. moving block; 38. first electric push rod; 39. second electric push rod; 310. plug-in rod; 4. rotating assembly; 41. vertical screw; 42. vertical block; 43. connecting rod; 44. slider; 45. plug-in ring; 46. slide rod. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figures 1 to 8The present invention provides a technical solution: a combined current transformer, comprising a mounting plate 1, two sets of housings 2 are arranged on the surface of the mounting plate 1, and a transformer body 24 is plugged and installed inside the housing 2, an exposure groove 21 is arranged on the front of the housing 2, and a plug-in terminal 22 is arranged at a position corresponding to the exposure groove 21 of the transformer body 24, a translation component 3 is arranged on the surface of the mounting plate 1, and the translation component 3 comprises a bidirectional screw 31, both ends of the bidirectional screw 31 are rotatably mounted on the middle surface of the mounting plate 1 through a bearing seat, and two moving blocks 37 are slidably sleeved on the surface of the bidirectional screw 31, a rotating component 4 is installed on the top and bottom of the moving block 37, and the rotating component 4 comprises a slider 44, an arc-shaped slide rail 32 is fixed to the bottom of the moving block 37, and a slider 44 is slidably connected inside the arc-shaped slide rail 32, and an insert ring 45 is fixed on the outer surface of the slider 44, A slide rod 46 is slidably inserted between the two plug rings 45, and a bottom block 25 is rotatably installed at the bottom of the shell 2 through a bearing, and a connecting plate 34 is fixed to one side of the bottom block 25, and the other end of the connecting plate 34 is fixedly connected to the slider 44. When using the device, the transformer body 24 is installed inside the shell 2, and the plug-in end 22 is located at a position where the groove 21 is exposed. It is fixedly installed on a wall or a horizontal plane through the mounting plate 1. The spacing between the two groups of transformer bodies 24 can be adjusted by the translation component 3 to meet the needs of plugging in the transformer body 24. The direction of the transformer can be rotated and exchanged by the rotation component 4, and it can be switched from vertical to horizontal. The angle can also be adjusted by rotating the shell 2 along the bottom block 25 to rotate the transformer body 24. It is suitable for installation in different environments. At the same time, the provision of multiple maintenance windows 23 can facilitate the maintenance of the transformer body 24 from different directions.

[0031] In this embodiment, a gear 26 is installed at the rotation connection between the shell 2 and the bottom block 25, a sliding frame 27 is fixed to one side of the bottom of the shell 2, and a toothed plate 28 is slidably connected inside the sliding frame 27, and the toothed plate 28 is meshed with the gear 26. The translation assembly 3 also includes a screw block 36, and two screw blocks 36 are symmetrically threaded on the surface of the bidirectional screw 31, and a connecting frame 33 is fixed to the bottom of the screw block 36. The connecting frame 33 is L-shaped, and a first electric push rod 38 is fixed to the position of the toothed plate 28 at the bottom horizontal surface of the connecting frame 33 corresponding to the position of the toothed plate 28. The toothed plate 28 is provided with a socket corresponding to the position of the first electric push rod 38, and the extended end of the first electric push rod 38 is inserted into the socket, and a second electric push rod 39 is fixed to the front of the screw block 36. The position of the second electric push rod 39 is the same as that of the toothed plate 28 when the shell 2 rotates to the horizontal position. The socket of the plate 28 corresponds to that of the transformer body 24. When the transformer body 24 is in a vertical state, the connecting frame 33 at the bottom of the screw block 36 and the extended end of the first electric push rod 38 are inserted into the socket of the tooth plate 28. At this time, the connecting frame 33 can play a certain auxiliary supporting role on the bottom of the shell 2. When the bidirectional screw 31 is rotated, the movement of the screw block 36 will drive the movement of the tooth plate 28 and engage with the gear 26, thereby changing the direction of rotation of the transformer, and the two groups of transformer bodies 24 can be rotated in opposite directions at the same time, with the position of the exposed groove 21 facing outward. When the transformer rotates to a horizontal state, the position of the second electric push rod 39 replaces the first electric push rod 38 and corresponds to the position of the socket of the tooth plate 28. By inserting the second electric push rod 39 into the socket of the tooth plate 28, the spacing between the two transformer bodies 24 can still be adjusted by the bidirectional screw 31.

[0032] In this embodiment, a movable groove 35 is opened on the outer side of the arc-shaped slide rail 32, and the connecting plate 34 slides along the movable groove 35. The rotating assembly 4 also includes a vertical screw 41. The mounting plate 1 is located at the top of the middle position of the bidirectional screw 31 and is rotatably mounted with the vertical screw 41 through a bearing seat, and a vertical block 42 is threadedly sleeved on the surface of the vertical screw 41. A connecting rod 43 is rotatably mounted on the outer surface of the vertical block 42 through a rotating shaft. The other end of the connecting rod 43 is rotatably mounted on the surface of the slide rod 46 located between the two insert rings 45 through a rotating shaft. The vertical screw 41 is rotated, and the vertical block 42 moves in the vertical direction in threaded cooperation with the vertical screw 41, and is pulled by the connecting rod 43 and the slide rod 46. The slider 44 moves inside the arc-shaped slide rail 32 because the two ends of the connecting plate 34 are fixedly connected to the bottom block 25 and the slider 44 and can slide along the movable groove 35. Then, when the vertical block 42 moves upward along the vertical screw 41, the connecting rod 43 will pull the slider 44 to move along the arc-shaped slide rail 32. At this time, the bottom block 25 and the outer shell 2 will also rotate synchronously, and the direction of the mutual inductor will be reversed. The bottom and top of the arc-shaped slide rail 32 correspond to the mutual inductor in the vertical state and the mutual inductor in the horizontal state respectively. The slide rod 46 connecting the plug rod 310 can allow the arc-shaped slide rail 32 to move with the bidirectional screw 31, and the plug rod 310 can move along the surface of the slide rod 46, thereby not causing the slider 44 to separate from the connecting rod 43.

[0033] In this embodiment, a plug rod 310 is threadedly inserted on the surface of the screw block 36, and a threaded head is fixed on one end of the plug rod 310 facing the moving block 37, and a screw hole is fixed on the moving block 37 at a position corresponding to the threaded head of the plug rod 310. The plug rod 310 can be threadedly inserted on the surface of the moving block 37. In this partial structure, the threaded head at one end of the plug rod 310 and the screw block 36 are threadedly inserted into a common threaded connection structure, so it is not shown in the figure. The plug rod 310 is actually equivalent to a long screw, and one end is inserted into the inside of the screw block 36. Because the screw block 36 moves in translation with the bidirectional screw 31, it will not be interfered by the existence of the plug rod 310. It only needs to rotate the shell 2 itself to move the first electric push rod 38 or the second electric push rod 38 at the outer end of the screw block 36. After the electric push rod 39 is connected to the toothed plate 28, when the bidirectional screw 31 is rotated, because only the screw block 36 is threadedly matched with the bidirectional screw 31, the movement of the screw block 36 only drives the toothed plate 28 to slide along the slide frame 27, meshing with the gear 26, and driving the housing 2 and the transformer body 24 to rotate and adjust the angle. When it is necessary to adjust the distance between the two housings 2 and the transformer, the long rod is rotated to fix one end of its threaded head on the moving block 37, and then the bidirectional screw 31 is rotated again. The moving block 37 is still driven to move together through the threaded match of the screw block 36 and the bidirectional screw 31. The moving block 37 will drive the arc-shaped slide rail 32 at the bottom to move synchronously, maintain the stability of the connection between the connecting plate 34 and the slide frame 27 and the bottom block 25, and separate the two groups of transformers.

[0034] In this embodiment, maintenance windows 23 are fixed on both sides of the shell 2 by screws, and there is a rotation space between the shell 2 and the mounting plate 1. The multiple maintenance windows 23 can cooperate with the rotation of the shell 2 itself to realize the maintenance of the transformer body 24 installed inside from different directions and positions. When the position of the shell 2 is moved along the arc-shaped slide rail 32 by the slider 44, the transformer body 24 can be changed from a vertical state to a horizontal state. In this state, the transformer can be rotated again, exposing the opening of the groove 21 and the plug-in terminal 22 facing upward, so that the transformer can be used horizontally, or the mounting plate 1 can be placed horizontally. According to different installation positions, an appropriate installation method is selected, and in the process of rotation and movement of the transformer body 24, the positions of the arc-shaped slide rail 32, the connecting frame 33 and other structures can avoid the rotation of the shell 2, and there is enough rotation space to avoid the problem of rotation interference.

[0035] When using the device, the transformer body 24 is installed inside the housing 2, and the plug-in end 22 is located at the position where the slot 21 is exposed. When the transformer body 24 is in a vertical state, the connecting frame 33 at the bottom of the screw block 36 and the extended end of the first electric push rod 38 are inserted into the socket of the toothed plate 28. At this time, the connecting frame 33 can play a certain auxiliary supporting role on the bottom of the housing 2. When the bidirectional screw 31 is rotated, the movement of the screw block 36 will drive the movement of the toothed plate 28 and engage with the gear 26, thereby changing the direction of rotation of the transformer, and the two groups of transformer bodies 24 can be rotated in opposite directions at the same time, so that the position of the exposed slot 21 is facing outward. When the transformer rotates to a horizontal state, the position of the second electric push rod 39 replaces the first electric push rod 38 and corresponds to the position of the socket of the toothed plate 28. , the spacing between the two transformer bodies 24 can still be adjusted by the bidirectional screw 31 through the insertion hole of the tooth plate 28 by inserting the second electric push rod 39 into the tooth plate 28, and it is fixedly installed on the wall or horizontal plane through the mounting plate 1, and the vertical screw 41 is rotated, and the vertical block 42 and the vertical screw 41 are threadedly matched to move in the vertical direction, and the slider 44 is pulled to move along the arc-shaped slide rail 32 through the connecting rod 43 and the slide rod 46. Because the two ends of the connecting plate 34 are fixedly connected to the bottom block 25 and the slider 44, and can slide along the moving groove 35, when the vertical block 42 moves upward along the vertical screw 41, the connecting rod 43 will pull the slider 44 to move along the arc-shaped slide rail 32. At this time, the bottom block 25 and the housing 2 will also rotate synchronously, and the direction of the transformer will be changed. The bottom and the top correspond to the mutual inductor in the vertical state and the mutual inductor in the horizontal state respectively. The slide bar 46 connected to the plug rod 310 can allow the arc-shaped slide rail 32 to move with the two-way screw rod 31. The plug rod 310 moves along the surface of the slide bar 46, which will not cause the slider 44 to separate from the connecting rod 43. After the first electric push rod 38 or the second electric push rod 39 at the outer end of the screw block 36 is connected to the toothed plate 28, when the two-way screw rod 31 is rotated, because only the screw block 36 is threadedly matched with the two-way screw 31, the movement of the screw block 36 only drives the toothed plate 28 to slide along the slide frame 27 and mesh with the gear 26, driving the housing 2 and the mutual inductor body 24 to rotate and adjust the angle. When it is necessary to adjust the distance between the two housings 2 and the mutual inductor, the long rod is rotated to fix one end of its threaded head on The moving block 37 is then rotated, and the moving block 37 is still driven to move together through the thread cooperation of the screw block 36 and the two-way screw 31. The moving block 37 will drive the arc-shaped slide rail 32 at the bottom to move synchronously, and maintain the stability of the connection between the connecting plate 34 and the slide frame 27 and the bottom block 25, and separate the two groups of mutual inductors. It is suitable for installation in different environments. Multiple maintenance windows 23 can cooperate with the rotation of the shell 2 itself to realize the maintenance of the internally installed mutual inductor body 24 from different directions and positions. When the position of the shell 2 is moved along the arc-shaped slide rail 32 by the slider 44, the mutual inductor body 24 can be changed from a vertical state to a horizontal state. In this state, the mutual inductor can be rotated again, exposing the opening of the slot 21 and the plug-in terminal 22 facing upward.Therefore, the transformer can be used horizontally, and the mounting plate 1 can also be placed horizontally. According to different installation positions, an appropriate installation method can be selected, and during the rotation and movement of the transformer body 24, the positions of the arc-shaped slide rail 32, the connecting frame 33 and other structures can avoid the rotation of the housing 2, and there is enough rotation space to avoid the problem of rotation interference.

[0036] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0037] 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. A combined current transformer, comprising a mounting plate (1), characterized in that: Two sets of shells (2) are provided on the surface of the mounting plate (1), and a transformer body (24) is plugged and installed inside the shell (2). An exposure groove (21) is provided on the front of the shell (2), and a plug-in terminal (22) is provided at a position corresponding to the exposure groove (21) of the transformer body (24). A translation assembly (3) is provided on the surface of the mounting plate (1), and the translation assembly (3) includes a bidirectional screw rod (31). Both ends of the bidirectional screw rod (31) are rotatably mounted on the middle surface of the mounting plate (1) through a bearing seat, and two moving blocks (37) are slidably sleeved on the surface of the bidirectional screw rod (31). A rotating assembly (4) is installed at the top and bottom of the moving block (37), and the rotating assembly (4) includes a slider (44). An arc-shaped slide rail (32) is fixed at the bottom of the moving block (37), and a slider (44) is slidably connected inside the arc-shaped slide rail (32). An insert ring (45) is fixed on the outer surface of the slider (44), and a slide rod (46) is slidably inserted between the two insert rings (45). A bottom block (25) is rotatably installed at the bottom of the housing (2) through a bearing, and a connecting plate (34) is fixed on one side of the bottom block (25), and the other end of the connecting plate (34) is fixedly connected to the slider (44).

2. A combined current transformer according to claim 1, characterized in that: A gear (26) is installed at the rotation connection between the housing (2) and the bottom block (25), a sliding frame (27) is fixed to one side of the bottom of the housing (2), and a toothed plate (28) is slidably connected inside the sliding frame (27), and the toothed plate (28) is meshedly connected with the gear (26).

3. A combined current transformer according to claim 2, characterized in that: The translation assembly (3) further comprises a screw block (36), two screw blocks (36) are symmetrically threadedly sleeved on the surface of the bidirectional screw rod (31), and a connecting frame (33) is fixed at the bottom of the screw block (36), and the connecting frame (33) is L-shaped.

4. A combined current transformer according to claim 3, characterized in that: A first electric push rod (38) is fixed to the bottom horizontal surface of the connecting frame (33) at a position corresponding to the tooth plate (28); a plug hole is provided on the tooth plate (28) at a position corresponding to the first electric push rod (38), and an extended end of the first electric push rod (38) is inserted into the plug hole.

5. A combined current transformer according to claim 4, characterized in that: A second electric push rod (39) is fixed on the front side of the screw block (36), and the position of the second electric push rod (39) corresponds to the insertion hole of the toothed plate (28) when the housing (2) rotates to be horizontal.

6. A combined current transformer according to claim 5, characterized in that: A moving groove (35) is provided on the outer side of the arc-shaped slide rail (32), and the connecting plate (34) slides along the moving groove (35).

7. A combined current transformer according to claim 6, characterized in that: An insertion rod (310) is threadedly inserted on the surface of the screw block (36); a threaded head is fixed to one end of the insertion rod (310) facing the moving block (37); and a screw hole is fixed on the moving block (37) at a position corresponding to the threaded head of the insertion rod (310); the insertion rod (310) can be threadedly inserted on the surface of the moving block (37).

8. The combined current transformer according to claim 1, characterized in that: The rotating assembly (4) also includes a vertical screw (41), and the mounting plate (1) is located at the top of the middle position of the bidirectional screw (31) and is rotatably mounted with the vertical screw (41) through a bearing seat, and a vertical block (42) is threadedly sleeved on the surface of the vertical screw (41).

9. A combined current transformer according to claim 8, characterized in that: A connecting rod (43) is rotatably mounted on the outer surface of the vertical block (42) via a rotating shaft, and the other end of the connecting rod (43) is rotatably mounted on the surface of the sliding rod (46) located between the two inserting rings (45) via a rotating shaft.

10. A combined current transformer according to claim 1, characterized in that: Maintenance windows (23) are fixed on both sides of the shell (2) by means of screws, and there is a rotation space between the shell (2) and the mounting plate (1).

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