High-voltage current transformer

Abstract

The invention discloses a high-voltage current transformer, and relates to the technical field of current transformers, the high-voltage current transformer comprises a bottom plate, the top of the bottom plate is fixedly provided with a current transformer shell, and the top of the current transformer shell is provided with a wiring mechanism used for connecting a line. According to the high-voltage current transformer, a worm and a worm wheel are matched to drive a first two-way lead screw to rotate, the first two-way lead screw and two movable plates are in threaded fit to drive the two movable plates, two push-pull columns and two movable frames to be close to or away from each other, and in addition, a second wrenching block is rotated to drive a second two-way lead screw to rotate; and two push-pull rods, two square pipes and two fixing seats are driven to be close to or far away from each other through thread fit between a second bidirectional lead screw and two sliding blocks, so that the length distance and the width distance among four fixing holes are adjusted, it is guaranteed that the four fixing holes are aligned with the positions of mounting holes in a mounting table, and smooth mounting is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of current transformers, in particular to a high-voltage current transformer. BACKGROUND

[0002] The high-voltage current transformer is a device for measuring high current, also known as a current transformer, which mainly functions to transform high current into small current for measurement, metering and protection in power systems. The high-voltage current transformer is usually installed on a high-voltage transmission line to monitor the change of current in real time. The high-voltage current transformer is composed of a core, a coil, an insulating sleeve and a terminal box, etc. The core is composed of multiple laminated iron cores to reduce iron loss. The coil is wrapped around the core for electromagnetic induction of the transformer. The insulating sleeve serves to insulate and protect the coil. The terminal box is used to connect the circuit. However, the mounting hole position of the existing current transformer is fixed, and the mounting hole position on the mounting table for installing the current transformer is also fixed, which may cause deviation between the mounting hole on the current transformer and the mounting hole on the mounting table, affecting the smooth installation. In addition, the wiring of the high-voltage current transformer is fixed by screws, which needs to be screwed separately during wiring, and the convenience of installation is poor. At the same time, the screws may be loose, so we propose a high-voltage current transformer. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a high-voltage current transformer to solve the problems raised in the background art.

[0004] To achieve the above purpose, the present application is implemented by the following technical scheme: a high-voltage current transformer, comprising a bottom plate, a current transformer shell is fixedly installed on the top of the bottom plate, a wiring mechanism for connecting the circuit is arranged on the top of the current transformer shell, a protection mechanism for protecting the wiring part is arranged on the top of the bottom plate outside the wiring mechanism, adjusting grooves are arranged on both sides of the bottom plate, moving frames are respectively and slidably connected in the cavities of the two adjusting grooves, two fixed seats are respectively and slidably connected to the inner sides of the two moving frames, fixed holes are arranged on the fixed seats, a transmission groove is arranged on the bottom of the bottom plate, an adjusting mechanism for adjusting the position of the fixed seat is arranged in the cavity of the transmission groove, a length scale is arranged on the top surface of the bottom plate, a length indicating arrow is arranged on the end of the moving frame, a width scale is arranged on the top surface of the moving frame, and a width indicating arrow is arranged on the top surface of the fixed seat. The cavities of the transmission groove and the adjusting grooves are communicated through the through grooves arranged on both sides of the transmission groove.

[0005] As a preferred technical scheme of the present application, the adjusting mechanism comprises a first bidirectional screw rod, a second bidirectional screw rod and a worm connected in the transmission groove cavity, a worm wheel is sleeved on the middle part of the first bidirectional screw rod, the worm wheel and the worm are in meshing connection, the outer sides of the two ends of the first bidirectional screw rod are respectively provided with a moving plate, the end faces of the two moving plates are fixedly connected with a group of push-pull columns, the ends of the two groups of push-pull columns are movably sleeved in the cavities of the adjusting grooves and connected with the side faces of the moving frame, the outer sides of the two ends of the second bidirectional screw rod are provided with a sliding block, the bottom ends of the two sliding blocks are fixedly connected with a push-pull rod, the two ends of the two push-pull rods extend through the grooves and are movably sleeved with a square tube, the side faces of the four square tubes are respectively matched with the side faces of the bottom ends of the four fixed seats, the end of the second bidirectional screw rod extends to the outside of the bottom plate and is fixedly connected with a second turning block, and the end of the worm extends to the outside of the bottom plate and is fixedly connected with a first turning block.

[0006] As a preferred technical scheme of the present application, the wiring mechanism comprises four wiring terminal seats arranged on the top of the current transformer shell and two columns fixedly connected on the top surface of the current transformer shell, the end of the wiring terminal seat is provided with a U-shaped hole, the top surface of the wiring terminal seat is provided with two extrusion holes, the bottom end of the extrusion hole is in communication with the inner cavity of the U-shaped hole, the top end of the column is fixedly connected with a top plate, a screw rod is threadedly sleeved on the top plate, the top end of the screw rod is fixedly connected with a knob, the bottom end of the screw rod is fixedly sleeved with a bearing, the outer side of the bearing is fixedly sleeved with a lifting plate, the bottom end of the lifting plate is fixedly connected with eight insulating extrusion columns, the bottom end of the eight insulating extrusion columns is movably sleeved in the inner cavity of the extrusion hole, and the column and the lifting plate are movably sleeved.

[0007] As a preferred technical scheme of the present application, the protection mechanism comprises a mounting base frame fixedly connected on the top of the current transformer shell, the two sides of the mounting base frame are provided with clamping grooves, one side of the mounting base frame is provided with a screw hole, the outer side of the mounting base frame is sleeved with a plastic terminal protection cover, the two sides of the inner cavity of the plastic terminal protection cover are respectively provided with clamping blocks, the end of the clamping block is movably sleeved in the inner cavity of the clamping groove, one side of the plastic terminal protection cover is provided with a mounting hole, the inner cavity of the mounting hole is sleeved with a butterfly screw, and the end of the butterfly screw is threadedly mounted in the inner cavity of the screw hole.

[0008] As a preferred technical scheme of the present application, the two ends of the mounting base frame are respectively provided with an inner wire penetrating hole, the inner cavity of the inner wire penetrating hole is fixedly sleeved with a rubber sealing ring, and the two ends of the plastic terminal protection cover are respectively provided with an outer wire penetrating groove, the positions of the outer wire penetrating grooves are aligned with the positions of the inner wire penetrating holes.

[0009] The inner wall of the plastic terminal protective cover is attached to the outer side of the mounting base frame, and the top surface of the knob is attached to the top surface of the inner cavity of the plastic terminal protective cover.

[0010] The top surface of the bottom plate is fixedly connected with a plurality of lifting rings, and the bottom surface of the bottom plate is fixedly connected with a rubber pad.

[0011] The top surface of the bottom plate is fixedly connected with a plurality of lifting rings, and the bottom surface of the bottom plate is fixedly connected with a rubber pad.

[0012] The top surface and the bottom surface of the push-pull rod are attached to the top surface and the bottom surface of the through-slot inner cavity, respectively.

[0013] The present application provides a high-voltage current transformer, which has the following advantages:

[0014] 1. The high-voltage current transformer drives the first bidirectional screw rod to rotate through the cooperation of the worm and the worm gear, drives the two moving plates, two push-pull columns and two moving frames to move closer or farther away through the thread cooperation between the first bidirectional screw rod and the two moving plates, adjusts the distance between the two fixed seats on the two moving frames through the cooperation of the length indicating arrow and the length scale, drives the second bidirectional screw rod to rotate through the rotation of the second turning block, drives the two push-pull rods, two square tubes and two fixed seats to move closer or farther away through the thread cooperation between the second bidirectional screw rod and the two sliding blocks, and controls the distance between the two fixed seats on the two moving frames through the cooperation of the width indicating arrow and the width scale, thereby adjusting the length distance and the width distance between the four fixed holes, so as to ensure that the mounting hole position on the mounting table is aligned and the installation is smoothly carried out.

[0015] 2. The high-voltage current transformer is provided with four wiring terminal seats on the top of the current transformer shell, and U-shaped holes are arranged on the wiring terminal seats. When connecting the wires, the ends of the wires are inserted into the inner cavities of the U-shaped holes and are bent in the U-shaped holes, so that the four wires are connected to the four wiring terminal seats. Subsequently, the rotation of the knob drives the screw rod to rotate, drives the lifting plate and the insulating extrusion column to move downward through the thread cooperation between the screw rod and the top plate, and inserts the insulating extrusion column into the inner cavities of the U-shaped holes to extrude and fix the ends of the wires, thereby realizing the function of conveniently connecting the wires. In addition, the bending of the wires in the U-shaped holes can ensure the firmness of the wire connection.

[0016] 3. The high-voltage current transformer, by installing the base frame, the clamping groove, the plastic terminal protective cover and the clamping block, the plastic terminal protective cover can be installed outside the wire connection, using the cooperation of the screw hole, the mounting hole and the butterfly screw to strengthen the fixing of the plastic terminal protective cover, using the plastic terminal protective cover to protect the wire connection, avoiding the influence of the external environment, in addition, the top surface of the inner cavity of the plastic terminal protective cover limits the top surface of the knob, avoiding the knob moving up, thereby ensuring the stability of the insulation extrusion column extruding and fixing the wire in the U-shaped hole. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the present application;

[0018] Figure 2 It is the overhead structure schematic diagram of the bottom plate of the present application;

[0019] Figure 3 It is the bottom view structure schematic diagram of the bottom plate of the present application;

[0020] Figure 4 It is the internal schematic diagram of the adjusting groove of the present application;

[0021] Figure 5 It is the structure schematic diagram of the installation base frame of the present application;

[0022] Figure 6 It is the structure schematic diagram of the wiring terminal seat of the present application;

[0023] Figure 7 It is the structure schematic diagram of the plastic terminal protective cover of the present application;

[0024] Figure 8 It is the structure schematic diagram of the lifting plate of the present application.

[0025] In the figure: 1, bottom plate; 2, current transformer shell; 3, wiring mechanism; 4, protection mechanism; 5, adjusting groove; 6, transmission groove; 7, moving frame; 8, fixed seat; 9, fixed hole; 10, square tube; 11, through slot; 12, adjusting mechanism; 13, first bidirectional screw rod; 14, second bidirectional screw rod; 15, worm; 16, worm wheel; 17, moving plate; 18, push-pull column; 19, sliding block; 20, push-pull rod; 21, second prying block; 22, first prying block; 23, hovering hinge; 24, sealing plate; 25, lifting ring; 26, length scale; 27, length indicating arrow; 28, width scale; 29, width indicating arrow; 30, rubber pad; 31, wiring terminal seat; 32, stand column; 33, U-shaped hole; 34, extrusion hole; 35, top plate; 36, screw rod; 37, knob; 38, bearing; 39, lifting plate; 40, insulating extrusion column; 41, mounting base frame; 42, clamping groove; 43, screw hole; 44, plastic terminal protection cover; 45, clamping block; 46, mounting hole; 47, butterfly screw; 48, outer threading groove; 49, inner threading hole; 50, rubber sealing ring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments of the present application.

[0027] Please refer to Figures 1 to 8The application provides a technical scheme: a high-voltage current transformer, comprising a bottom plate 1, a current transformer shell 2 is fixedly installed on the top of the bottom plate 1, the inside of the current transformer shell 2 is provided with a core, a coil and the like structure, which is prior art and will not be described in detail, the top of the current transformer shell 2 is provided with a wiring mechanism 3 for connecting a line, the top of the bottom plate 1 and outside the wiring mechanism 3 are provided with a protection mechanism 4 for protecting a wiring part, both sides of the bottom plate 1 are provided with adjusting grooves 5, the inner cavities of the two adjusting grooves 5 are respectively slidably connected with moving frames 7, both ends of the adjusting groove 5 are respectively provided with sliding grooves, both ends of the moving frame 7 extend into the sliding grooves, so that the stability of the moving frame 7 slidably installed in the adjusting groove 5 is ensured, the inner sides of the two moving frames 7 are respectively slidably connected with two fixing bases 8, the fixing bases 8 are respectively provided with fixing holes 9, both sides of the inner cavity of the moving frame 7 are respectively provided with sliding grooves, and the two sides of the fixing base 8 are slidably connected in the sliding grooves, so that the stability of the fixing base 8 installed on the moving frame 7 is ensured, the bottom of the bottom plate 1 is provided with a transmission groove 6, the inner cavity of the transmission groove 6 is provided with an adjusting mechanism 12 for adjusting the position of the fixing base 8, the top surface of the bottom plate 1 is provided with a length scale 26, the end of the moving frame 7 is provided with a length indicating arrow 27, the position of the length indicating arrow 27 is aligned with the center of the fixing hole 9 on the fixing base 8, so that the distance between the fixing bases 8 on the two moving frames 7 can be controlled by cooperation of the length indicating arrow 27 and the length scale 26, the top surface of the moving frame 7 is provided with a width scale 28, the top surface of the fixing base 8 is provided with a width indicating arrow 29, the position of the width indicating arrow 29 is aligned with the center of the fixing hole 9, so that the width scale 28 and the width indicating arrow 29 can control the distance between the two fixing bases 8 on the moving frame 7, and both sides of the inner cavity of the transmission groove 6 are respectively provided with through grooves 11, which communicate the inner cavities of the adjusting groove 5 and the transmission groove 6.

[0028] The adjusting mechanism 12 comprises a first bidirectional screw rod 13, a second bidirectional screw rod 14 and a worm 15 rotatably connected in the inner cavity of the transmission groove 6, the middle part of the first bidirectional screw rod 13 is sleeved with a worm wheel 16, the worm wheel 16 and the worm 15 are in meshing connection, the worm 15 and the worm wheel 16 have reverse self-locking property, so that only the worm 15 can drive the worm wheel 16 to rotate, which is prior art and will not be described in detail, the outer sides of the two ends of the first bidirectional screw rod 13 are respectively threadedly and matchingly installed with moving plates 17, the moving plates 17 are provided with screw holes matched with the first bidirectional screw rod 13, so that the moving plates 17 and the first bidirectional screw rod 13 can be smoothly transmitted, the end faces of the two moving plates 17 are fixedly connected with a group of push-pull columns 18, the ends of the two groups of push-pull columns 18 are movably sleeved into the inner cavities of the two adjusting grooves 5 and connected with the side faces of the moving frame 7, the outer sides of the two ends of the second bidirectional screw rod 14 are threadedly and matchingly installed with sliding blocks 19, the sliding blocks 19 are provided with screw holes matched with the second bidirectional screw rod 14, so that the sliding blocks 19 and the second bidirectional screw rod 14 can be smoothly transmitted, the bottom ends of the two sliding blocks 19 are fixedly connected with push-pull rods 20, the two ends of the two push-pull rods 20 extend into the inner cavities of the two adjusting grooves 5 through the slot 11 and are movably sleeved with square tubes 10, the side faces of the four square tubes 10 are respectively matched with the side faces of the bottom ends of the four fixed seats 8, the end of the second bidirectional screw rod 14 extends to the outside of the bottom plate 1 and is fixedly connected with a second prying block 21, the end of the worm 15 extends to the outside of the bottom plate 1 and is fixedly connected with a first prying block 22, the top face and the bottom face of the push-pull rod 20 are respectively matched with the top face and the bottom face of the inner cavity of the slot 11, the push-pull rod 20 is limited by the inner wall of the slot 11, so that the push-pull rod 20 and the sliding block 19 can only move along the axial direction of the second bidirectional screw rod 14.

[0029] The wiring mechanism 3 comprises four wiring terminal seats 31 arranged on the top of the current transformer shell 2 and two upright columns 32 fixedly connected to the top surface of the current transformer shell 2, the four wiring terminal seats 31 are respectively connected with coils in the current transformer shell 2, the end of the wiring terminal seat 31 is provided with a U-shaped hole 33, the top surface of the wiring terminal seat 31 is provided with two extrusion holes 34, the bottom end of the extrusion hole 34 is in communication with the inner cavity of the U-shaped hole 33, the top end of the upright column 32 is fixedly connected with a top plate 35, the top plate 35 is threadedly sleeved with a screw rod 36, the top end of the screw rod 36 is fixedly connected with a knob 37, the bottom end of the screw rod 36 is fixedly sleeved with a bearing 38, the outer side of the bearing 38 is fixedly sleeved with a lifting plate 39, the bottom end of the lifting plate 39 is fixedly connected with eight insulating extrusion columns 40, the bottom end of the eight insulating extrusion columns 40 is movably sleeved into the inner cavity of the extrusion hole 34, and the upright column 32 and the lifting plate 39 are movably sleeved.

[0030] The protection mechanism 4 comprises a mounting base frame 41 fixedly connected to the top of the current transformer shell 2, both sides of the mounting base frame 41 are provided with clamping grooves 42, one side of the mounting base frame 41 is provided with a threaded hole 43, the outer side of the mounting base frame 41 is sleeved with a plastic terminal protection cover 44, both sides of the inner cavity of the plastic terminal protection cover 44 are provided with clamping blocks 45, the end of the clamping block 45 is movably sleeved into the inner cavity of the clamping groove 42, the size of the clamping block 45 is matched with the size of the inner cavity of the clamping groove 42, so as to ensure the stability of the plastic terminal protection cover 44 when the clamping block 45 is inserted into the inner cavity of the clamping groove 42, in addition, both sides of the plastic terminal protection cover 44 are provided with slots, so that the position of the clamping block 45 can be pulled outward, so as to ensure that the clamping block 45 can be clamped into the inner cavity of the clamping groove 42, one side of the plastic terminal protection cover 44 is provided with a mounting hole 46, the inner cavity of the mounting hole 46 is sleeved with a butterfly screw 47, and the end of the butterfly screw 47 is screwed into the inner cavity of the threaded hole 43.

[0031] Both ends of the mounting base frame 41 are respectively provided with inner wire passing holes 49, the inner cavities of the inner wire passing holes 49 are fixedly sleeved with rubber sealing rings 50, and the rubber sealing rings 50 are used to ensure the sealing performance of the wires passing through the inner wire passing holes 49, both ends of the plastic terminal protection cover 44 are respectively provided with outer wire passing grooves 48, and the positions of the outer wire passing grooves 48 are aligned with the positions of the inner wire passing holes 49.

[0032] The inner wall of the plastic terminal protection cover 44 is attached to the outer side of the mounting base frame 41, so as to ensure the firmness and sealing performance of the plastic terminal protection cover 44 sleeved on the outer side of the mounting base frame 41, the top surface of the knob 37 is attached to the top surface of the inner cavity of the plastic terminal protection cover 44, the inner cavity of the plastic terminal protection cover 44 is used to limit the knob 37, so as to avoid the upward movement of the knob 37, thereby ensuring the stability of the insulation extrusion column 40 in fixing the wires inserted into the U-shaped hole 33.

[0033] The top surface of the bottom plate 1 is fixedly connected with a plurality of lifting rings 25, and the bottom surface of the bottom plate 1 is fixedly connected with rubber pads 30, the device is lifted by using the lifting rings 25, and the sealing performance and anti-skid performance between the bottom surface of the bottom plate 1 and the mounting table are ensured by using the rubber pads 30.

[0034] The top surface of the bottom plate 1 and the side part located at the top end of the inner cavity of the adjusting groove 5 are respectively fixedly installed with hovering hinges 23, the end of the hovering hinge 23 is fixedly installed with a cover plate 24, and the cover plate 24 is located at the upper part of the inner cavity of the adjusting groove 5. The top part of the inner cavity of the adjusting groove 5 is sealed by using the cover plate 24, so as to avoid the falling of sundries and leaves into the adjusting groove 5.

[0035] In summary, when the high-voltage current transformer is used, first, the length direction distance and the width direction distance of the mounting hole on the mounting table of the transformer are measured by using a tape measure, and the sealing plate 24 is opened, the first wrenching block 22 is rotated to drive the worm 15 to rotate, the transmission between the worm 15 and the worm gear 16 drives the first bidirectional screw rod 13 to rotate, the screw thread cooperation between the first bidirectional screw rod 13 and the two moving plates 17 drives the two moving plates 17 to move close to or away from each other, thereby adjusting the distance between the two moving frames 7 by using the push-pull column 18 on the side of the moving plate 17, and then adjusting the distance between the fixed seats 8 on the two moving frames 7 by using the cooperation of the length indicating arrow 27 and the length scale 26, so that the distance is equal to the length direction distance of the mounting hole measured by the tape measure, then the second wrenching block 21 is rotated to drive the second bidirectional screw rod 14 to rotate, the screw thread cooperation between the second bidirectional screw rod 14 and the two sliding blocks 19 drives the two push-pull rods 20 to move close to or away from each other, the square tube 10 and the fixed seat 8 are driven to move synchronously by using the push-pull rod 20, and at the same time, the distance between the two fixed seats 8 on the two moving frames 7 is controlled by using the cooperation of the width indicating arrow 29 and the width scale 28, and the distance between the two fixed seats 8 is equal to the width direction distance of the mounting hole measured by the tape measure, then the device is lifted to the mounting table by using the cooperation of the rope, the lifting ring 25 and the lifting machine, and the fixed hole 9 on the fixed seat 8 is aligned with the mounting hole on the mounting table, so that the bolt is inserted into the fixed hole 9 and the mounting hole for fixation, then the wire to be connected is inserted from the inside of the rubber sealing ring 50 in the inner threading hole 49, and the exposed part of the wire end is inserted from one end of the inner cavity of the U-shaped hole 33, and the end of the wire is inserted from the other end of the inner cavity of the U-shaped hole 33, so that the wire is inserted on the four terminal blocks 31 respectively, so as to rotate the knob 37 to drive the screw rod 36 to rotate, the screw thread cooperation between the screw rod 36 and the top plate 35 drives the lifting plate 39 and the insulating extrusion column 40 to move downward, so that the insulating extrusion column 40 is inserted into the inner cavity of the U-shaped hole 33 to extrude and fix the end of the wire, and finally the plastic terminal protection cover 44 is covered on the outside of the terminal block 31, and at the same time, the plastic terminal protection cover 44 is sleeved on the outside of the installation base frame 41, and the clamping block 45 on the inside of the plastic terminal protection cover 44 is clamped into the clamping groove 42 on the side of the installation base frame 41, and in addition, the butterfly screw 47 is inserted into the mounting hole 46, and the end of the butterfly screw 47 is screwed into the screw hole 43 to strengthen the fixation of the plastic terminal protection cover 44, and the connection of the wire is protected by using the plastic terminal protection cover 44, and the connection of the wire is protected.

[0036] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A high voltage current transformer, comprising a base plate (1), characterized in that: A current transformer housing (2) is fixedly mounted on the top of the base plate (1), a wiring mechanism (3) for connecting a line is provided on the top of the current transformer housing (2), a protection mechanism (4) for protecting a wiring portion is provided on the top of the base plate (1) and located outside the wiring mechanism (3), adjustment slots (5) are provided on both sides of the base plate (1), the inner cavities of the two adjustment slots (5) are respectively slidably connected to movable frames (7), the inner sides of the two movable frames (7) are slidably connected to two fixing seats (8), and the fixing seats (8) are each provided with fixing holes (9), A transmission groove (6) is provided at the bottom of the base plate (1), an inner cavity of the transmission groove (6) is provided with an adjustment mechanism (12) for adjusting the position of the fixed seat (8), a length scale (26) is provided on the top surface of the base plate (1), a length indication arrow (27) is provided at the end of the movable frame (7), a width scale (28) is provided on the top surface of the movable frame (7), and a width indication arrow (29) is provided on the top surface of the fixed seat (8), and through grooves (11) are respectively provided on both sides of the inner cavity of the transmission groove (6), and the through grooves (11) communicate with the inner cavities of the adjustment groove (5) and the transmission groove (6).

2. A high-voltage current transformer according to claim 1, characterized in that: The adjusting mechanism (12) includes a first bidirectional screw (13), a second bidirectional screw (14) and a worm (15) which are rotatably connected to the inner cavity of the transmission groove (6); a worm wheel (16) is fixedly sleeved on the middle part of the first bidirectional screw (13); the worm wheel (16) and the worm (15) are meshed with each other; movable plates (17) are respectively installed on the outer sides of both ends of the first bidirectional screw (13); the end faces of the two movable plates (17) are fixedly connected to a group of push-pull columns (18); the ends of the two groups of push-pull columns (18) are respectively movably sleeved to the inner cavity of the adjusting groove (5) and connected to the side of the movable frame (7); the second bidirectional screw (13) is fixedly sleeved on the middle part of the first bidirectional screw (13); the worm wheel (16) and the worm (15) are meshed with each other; movable plates (17) are respectively installed on the outer sides of both ends of the first bidirectional screw (13); the end faces of the two movable plates (17) are fixedly connected to a group of push-pull columns (18); the ends of the two groups of push-pull columns (18) are respectively movably sleeved to the inner cavity of the adjusting groove (5) and connected to the side of the movable frame (7); Slide blocks (19) are installed on the outer sides of both ends of the screw rod (14), and the bottom ends of the two slide blocks (19) are fixedly connected to push-pull rods (20). Both ends of the two push-pull rods (20) pass through the through slots (11) and extend to the inner cavities of the two adjustment slots (5) and are movably sleeved with square tubes (10). The side surfaces of the four square tubes (10) are respectively fitted with the side surfaces of the bottom ends of the four fixed seats (8). The end of the second bidirectional screw rod (14) extends to the outside of the base plate (1) and is fixedly connected to the second pull block (21). The end of the worm (15) extends to the outside of the base plate (1) and is fixedly connected to the first pull block (22).

3. A high-voltage current transformer according to claim 1, characterized in that: The wiring mechanism (3) comprises four wiring terminal blocks (31) arranged on the top of the current transformer housing (2) and two upright posts (32) fixedly connected to the top surface of the current transformer housing (2), the ends of the wiring terminal blocks (31) are each provided with a U-shaped hole (33), the top surface of the wiring terminal blocks (31) is each provided with two extrusion holes (34), the bottom end of the extrusion hole (34) is connected to the inner cavity of the U-shaped hole (33), the top end of the upright post (32) is fixedly connected to a top plate (35), and the A screw rod (36) is threadedly sleeved on the top plate (35), a knob (37) is fixedly connected to the top end of the screw rod (36), a bearing (38) is fixedly sleeved to the bottom end of the screw rod (36), a lifting plate (39) is fixedly sleeved on the outer side of the bearing (38), and eight insulating extrusion columns (40) are fixedly connected to the bottom end of the lifting plate (39), and the bottom ends of the eight insulating extrusion columns (40) are movably sleeved to the inner cavity of the extrusion hole (34), and the column (32) and the lifting plate (39) are movably sleeved.

4. A high-voltage current transformer according to claim 3, characterized in that: The protection mechanism (4) comprises a mounting base frame (41) fixedly connected to the top of the current transformer housing (2), both sides of the mounting base frame (41) are provided with card slots (42), one side of the mounting base frame (41) is provided with a screw hole (43), the outer side of the mounting base frame (41) is provided with a plastic terminal protection cover (44), both sides of the inner cavity of the plastic terminal protection cover (44) are provided with card blocks (45), the ends of the card blocks (45) are movably sleeved into the inner cavity of the card slot (42), one side of the plastic terminal protection cover (44) is provided with a mounting hole (46), the inner cavity of the mounting hole (46) is sleeved with a butterfly screw (47), and the end of the butterfly screw (47) is threadedly mounted into the inner cavity of the screw hole (43).

5. A high-voltage current transformer according to claim 4, characterized in that: The two ends of the mounting base frame (41) are respectively provided with inner threading holes (49), and the inner cavity of the inner threading hole (49) is fixedly sleeved with a rubber sealing ring (50). The two ends of the plastic terminal protection cover (44) are respectively provided with outer threading grooves (48), and the position of the outer threading grooves (48) is aligned with the position of the inner threading hole (49).

6. A high-voltage current transformer according to claim 4, characterized in that: The inner wall of the plastic terminal protection cover (44) is in contact with the outer side surface of the mounting base frame (41), and the top surface of the knob (37) is in contact with the top surface of the inner cavity of the plastic terminal protection cover (44).

7. A high-voltage current transformer according to claim 2, characterized in that: The top surface of the base plate (1) is fixedly connected to a plurality of hanging rings (25), and the bottom surface of the base plate (1) is fixedly connected to a rubber pad (30).

8. A high-voltage current transformer according to claim 1, characterized in that: Suspension hinges (23) are fixedly mounted on the top surface of the bottom plate (1) and on the side portions located at the top end of the inner cavity of the adjustment groove (5). A sealing plate (24) is fixedly mounted on the end portion of the suspension hinge (23). The sealing plate (24) is located at the upper portion of the inner cavity of the adjustment groove (5).

9. A high-voltage current transformer according to claim 2, characterized in that: The top surface and bottom surface of the push-pull rod (20) are respectively fitted with the top surface and bottom surface of the inner cavity of the through slot (11).

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