An electronic voltage transformer

Abstract

The present application relates to the technical field of voltage transformers, and in particular to an electronic voltage transformer, comprising a transformer body and a base, the base comprising a pedestal and a lifting pile, the pedestal being arranged in the soil, the lifting pile being arranged on the pedestal, the lifting pile being connected to a lifting structure for driving the lifting pile to lift, a connecting structure being arranged above the lifting pile, the connecting structure being used to connect to the transformer body, thereby achieving the effect of making the installation of the capacitive voltage transformer more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of voltage transformers, and in particular to an electronic voltage transformer. Background Art

[0002] Electronic voltage transformers measure and transform voltage through electronic components and sensors. They usually use technologies such as capacitor voltage division, resistor voltage division or optical sensing to convert high voltage into low voltage signals, which are then processed and transmitted through electronic circuits. Compared with traditional electromagnetic voltage transformers, electronic voltage transformers have higher measurement accuracy, wider measurement range and better dynamic response performance.

[0003] Capacitor voltage transformer is a voltage transformer that extracts voltage from a series capacitor and then transforms it into a voltage source for meters, relay protection, etc. Capacitor voltage transformer can also couple carrier frequency to transmission lines for long-distance communication, remote measurement, selective line high-frequency protection, remote control, teletypewriting, etc. Therefore, compared with conventional electromagnetic voltage transformers, capacitor voltage transformers can prevent ferromagnetic resonance caused by saturation of the voltage transformer core, and have many advantages in economy and safety.

[0004] When installing the voltage transformer, you need to install the base first, then lift the transformer body with a crane, align the transformer body with the base, and then the staff will connect the transformer body with the base through a flange at a high place.

[0005] The defects of the prior art are: the installation steps of the existing capacitive transformer are complicated, and the workers need to operate in the air when installing the transformer body, which is relatively dangerous. Summary of the invention

[0006] In order to make the installation of a capacitive voltage transformer more convenient and the safety of workers greater, the present application provides an electronic voltage transformer.

[0007] The above technical objectives of this application are achieved through the following technical solutions:

[0008] An electronic voltage transformer comprises a transformer body and a base, wherein the base comprises a pedestal and a lifting pile, wherein the pedestal is arranged in the soil, the lifting pile is arranged on the pedestal, the lifting pile is connected with a lifting structure for driving the lifting pile to lift, and a connecting structure is arranged above the lifting pile, and the connecting structure is used to connect with the transformer body.

[0009] By adopting the above scheme, when it is necessary to install the capacitive voltage transformer, the base is first installed on the ground, and then the transformer body is connected to the top of the lifting pile through the connecting structure, and then the lifting structure is started to drive the lifting pile to move upward, so that the transformer body is raised to the required height, and then the wiring of the transformer body is carried out. Through the above scheme, the installation of the transformer body and the base is carried out on the ground, which not only makes the installation of the transformer body and the base more convenient, but also makes the workers operate on the ground, which makes the workers safer.

[0010] Optionally, a lifting groove is opened above the base, and the lifting pile is arranged in the lifting groove. The lifting structure includes a lifting ring, which is rotatably connected above the base, and a thread is arranged on the inner wall of the lifting ring and the outer side of the lifting pile. The lifting ring and the lifting pile are connected by threads.

[0011] By adopting the above scheme, the operator can rotate the lifting ring to cause relative displacement between the lifting pile and the lifting ring, and since the lifting pile and the lifting ring are connected by threads, the rotation of the lifting ring can move the lifting pile in the vertical direction, thereby driving the transformer body to move to a suitable position.

[0012] Optionally, a square column is fixedly connected to the lower surface of the lifting groove, a square groove is opened on the lower surface of the lifting pile, the square column is inserted into the square groove, and the square column is slidably connected to the lifting pile.

[0013] By adopting the above solution, the square column limits the rotation of the lifting pile, preventing the lifting pile from rotating together with the lifting ring, resulting in the lifting pile not being able to be lifted normally, thereby making the lifting of the lifting pile smoother.

[0014] Optionally, gear teeth are provided on the outside of the lifting ring, and the lifting ring is meshed with a first transmission gear through the gear teeth, the first transmission gear is fixedly connected to a wheel rod, the wheel rod is rotatably connected to the base, and a transmission cavity is opened below the base, the wheel rod is fixedly connected to the second transmission gear at one end facing away from the first transmission gear, the second transmission gear is located in the transmission cavity, a large transmission gear is rotatably connected in the transmission cavity, the second transmission gear is meshed with a third transmission gear, the third transmission gear is meshed with the second transmission gear and the large transmission gear, a plurality of fourth transmission gears are rotatably connected in the transmission cavity, the plurality of fourth transmission gears are all meshed with the large transmission gear, the fourth transmission gear is fixedly connected to a threaded rod, the threaded rod passes through the transmission cavity to reach the lifting slot, a threaded hole is opened on the lower surface of the lifting pile opposite to the threaded rod, and the threaded rod is threadedly connected in the threaded hole.

[0015] By adopting the above scheme, the rotation of the lifting ring drives the first transmission gear to rotate, thereby driving the wheel rod and the second transmission gear to rotate, the second transmission gear is transmitted to the large transmission gear through the third transmission gear, and the large gear simultaneously drives multiple fourth transmission gears to rotate, thereby driving multiple threaded rods to rotate, and the threaded rods and the lifting piles are relatively displaced, so that the threaded rods drive the lifting piles to rise and fall, and the threaded rods and the lifting ring jointly drive the lifting piles to rise and fall, thereby improving the service life of the lifting ring and the threaded rods, and providing more stable support for the lifting piles.

[0016] Optionally, a plurality of driving gears are rotatably connected above the base, the plurality of driving gears are all engaged with the lifting ring, and the plurality of driving gears are evenly arranged in a circular array, the driving gears are fixedly connected to a driving rod, and a hand wheel is connected to one end of the driving rod away from the driving gear.

[0017] By adopting the above scheme, multiple operators can jointly drive the lifting and rotation, and multiple operators can jointly drive the lifting and lowering of the lifting pile, and the diameter of the driving gear is smaller than the diameter of the lifting ring, and the force of rotating the driving gear is smaller, so that it is easier for the operators to drive the lifting and lowering of the lifting pile.

[0018] Optionally, the side wall of the lifting groove is provided with a plurality of pin grooves, a bayonet pin is slidably connected in the pin groove, and a spring is connected in the pin groove, one end of the spring is fixedly connected to the bayonet pin, and the other end of the spring is fixedly connected to the bottom of the pin groove, and a ball is rotatably connected to the end of the bayonet pin away from the spring. When the lifting pile is located in the lifting groove, the ball abuts against the surface of the lifting pile. When the lifting pile rises to the highest point, the spring drives the bayonet pin part to extend out of the pin groove, and makes the bayonet pin abut against the lower surface of the lifting pile.

[0019] By adopting the above solution, when the lifting pile rises to the highest point, the spring rebounds and drives the locking pin to extend out of the pin groove, so that a part of the locking pin is located under the lifting pile, thereby supporting the lifting pile and fixing the lifting pile, while preventing the operator from accidentally touching the hand wheel to cause the lifting pile to drop and cause problems with the transformer.

[0020] Optionally, a through hole connected to the pin groove is opened on the top of the base, and a thread is arranged at the lower end of the through hole. An unlocking rod is connected to the thread in the through hole. The surface of the unlocking rod is arranged with a thread, and the unlocking rod is spherical at the lower end. A slope is arranged above the pin. When the pin is against the lower surface, the unlocking rod is rotated to make the unlocking rod contact with the inclined surface of the pin, driving the pin to move toward the bottom of the pin groove.

[0021] By adopting the above scheme, when the lifting pile needs to be lowered, the unlocking rod is screwed into the through hole so that the unlocking rod latching pin slope contacts, thereby driving the latching pin to move into the pin groove, thereby releasing the limit of the lifting pile by the latching pin, allowing the lifting pile to be lowered, thereby facilitating the maintenance and replacement of the transformer.

[0022] Optionally, the connection structure includes a connector, which is arranged at the lower end of the transformer body, and the connector is connected to a plug rod at the lower end, a slot is provided above the lifting pile, the plug rod is inserted into the slot, and a plurality of reinforcing rods are fixedly connected to the connector at the lower end, and the plurality of reinforcing rods are arranged in a circular array, a circular hole is provided at one end of the reinforcing rod away from the connector, and a reinforcing hole is provided above the lifting pile at a position relative to the reinforcing rod. When the connector is connected to the lifting pile, the plug rod is inserted into the slot, the reinforcing rod is inserted into the reinforcement hole, and a locking device is provided inside the lifting pile. The locking cavity is connected with the reinforcement hole, a disc is rotatably connected in the locking cavity, a plurality of locking rods are connected to the circumferential surface of the disc, the rotation of the disc drives the locking rod to enter the circular hole, the disc is connected with a disc rod, the end of the disc rod away from the disc is fixedly connected with a locking gear, the locking gear is meshed with a rack, there is a space inside the lifting pile to enable the rack to slide, a top block is fixedly connected to one end of the rack, an elastic member is connected to the end of the rack away from the top block, a threaded groove is opened on the circumferential surface of the locking cavity, the top block part is located in the threaded groove, and a fastening bolt is threadedly connected in the threaded groove.

[0023] By adopting the above scheme, when installing the transformer body, the insertion rod is inserted into the slot, the reinforcement rod is inserted into the reinforcement hole, and then the fastening bolt is screwed into the threaded groove, so that the fastening bolt squeezes the top block, thereby causing the rack to drive the locking gear to rotate, thereby driving the locking rod to be inserted into the circular hole, thereby fixing the reinforcement rod in the reinforcement hole, and thus fixing the transformer body and the base.

[0024] Optionally, the locking rod is a locking rod with a conical end.

[0025] By adopting the above solution, the reinforcement rod can enter the circular hole more smoothly, making it more convenient for the locking rod to fix the reinforcement rod.

[0026] Optionally, a limiting groove is provided on the side surface of the slot, and a limiting block is provided on the circumferential surface of the insertion rod. When the connector is connected to the lifting pile, the limiting block is located in the limiting groove.

[0027] By adopting the above solution, the limiting block is set to slide in the limiting groove to limit the rotation of the connecting block, while making it more convenient to insert the insertion rod into the slot and the reinforcement rod into the reinforcement groove.

[0028] In summary, this application has the following technical effects:

[0029] 1. By setting up a connecting structure and a lifting structure, the transformer can be connected to the lifting pile through the connecting structure, and the transformer body is driven to rise to a suitable position through the lifting structure, so that when the transformer is installed, workers can install the transformer on the ground, making the installation of the transformer more convenient and safe;

[0030] 2. The threaded rod makes the lifting pile smoother and reduces the load on the lifting ring, which increases the service life of the lifting ring;

[0031] 3. By setting a bayonet to support the lifting pile, the bearing capacity of the base is made stronger, so that the transformer body is fixed more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of this application;

[0033] Figure 2 This application intends to emphasize the cross-sectional view of the internal structure of the base;

[0034] Figure 3 This is a partial structural diagram of the first transmission gear that this application intends to emphasize;

[0035] Figure 4 This is a partial structural cutaway view of the driving gear that this application intends to emphasize;

[0036] Figure 5 This is a partial structural diagram of the present application intended to emphasize the latch;

[0037] Figure 6 This is a partial structural cross-sectional view of the connector that this application intends to emphasize;

[0038] Figure 7 This is a partial structural cross-sectional view intended to emphasize the disc in this application.

[0039] In the figure, 1. transformer body; 2. base; 21. lifting slot; 211. pin slot; 22. square column; 3. lifting pile; 31. slot; 311. limit slot; 32. reinforcement hole; 33. locking cavity; 4. lifting ring; 5. first transmission gear; 51. second transmission gear; 52. third transmission gear; 54. fourth transmission gear; 55. large transmission gear; 56. threaded rod; 6. driving gear; 61. driving rod; 62. hand wheel; 7. latch; 71. spring; 72. unlocking rod; 8. connector; 81. plug rod; 811. limit block; 812. reinforcement rod; 9. disc; 91. locking rod; 92. locking gear; 93. rack; 931. top block; 932. elastic member; 94. fastening bolt. DETAILED DESCRIPTION

[0040] The present application is further described in detail below with reference to the accompanying drawings.

[0041] Reference Figure 1An electronic voltage transformer includes a transformer body 1 and a base, the base includes a base 2 and a lifting pile 3, the base 2 is set in the soil, the lifting pile 3 is set on the base 2, the lifting pile 3 is connected to a lifting structure for driving the lifting pile 3 to lift, and a connecting structure is set above the lifting pile 3, and the connecting structure is used to connect with the transformer body 1. When the capacitive voltage transformer needs to be installed, the base is first installed on the ground, and then the transformer body 1 is connected to the lifting pile 3 through the connecting structure, and then the lifting structure is started to drive the lifting pile 3 to move upward, so that the transformer body 1 is raised to the required height, and then the transformer body 1 is connected. Through the above scheme, the installation of the transformer body 1 and the base is carried out on the ground, which not only makes the installation of the transformer body 1 and the base more convenient, but also makes the workers operate on the ground, which makes the workers safer.

[0042] Reference Figure 1 and Figure 2 A lifting groove 21 is provided on the top of the base 2, and the lifting pile 3 is arranged in the lifting groove 21. The lifting structure includes a lifting ring 4, and the lifting ring 4 is rotatably connected to the top of the base 2. The inner wall of the lifting ring 4 is provided with a thread, and the outer side of the lifting pile 3 is provided with a thread, and the lifting ring 4 and the lifting pile 3 are connected by threads. A square column 22 is fixedly connected to the lower surface of the lifting groove 21, and a square groove is provided on the lower surface of the lifting pile 3. The square column 22 is inserted into the square groove, and the square column 22 is slidably connected to the lifting pile 3. The operator can rotate the lifting ring 4 to make the lifting pile 3 and the lifting ring 4 relatively displaced, and because the lifting pile 3 and the lifting ring 4 are connected by threads, the square column 22 limits the rotation of the lifting pile 3, so the rotation of the lifting ring 4 can make the lifting pile 3 move in the vertical direction, thereby driving the transformer body 1 to move to a suitable position.

[0043] Reference Figure 2 and Figure 3A ring-shaped shell is arranged above the base 2, and the lifting ring 4 is rotatably connected inside the shell. Gear teeth are arranged on the outer side of the lifting ring 4, and the lifting ring 4 is meshed with a first transmission gear 5 through the gear teeth. The first transmission gear 5 is fixedly connected with a wheel rod, and the wheel rod is rotatably connected with the base 2, and a transmission cavity is opened below the base 2, and a second transmission gear 51 is fixedly connected to the end of the wheel rod away from the first transmission gear 5, and the second transmission gear 51 is located in the transmission cavity, and a large transmission gear 55 is rotatably connected in the transmission cavity, and the second transmission gear 51 is meshed with a third transmission gear 52, and the third transmission gear 52 is meshed with the second transmission gear 51 and the large transmission gear 55. A plurality of fourth transmission gears 54 are rotatably connected in the transmission cavity, and the plurality of fourth transmission gears 54 are all meshed with the large transmission gear 55. The fourth transmission gear 54 is fixedly connected with a threaded rod 56, and the threaded rod 56 passes through the transmission cavity to reach the lifting slot 21. A threaded hole is opened at a position on the lower surface of the lifting pile 3 facing the threaded rod 56, and the threaded rod 56 is threadedly connected in the threaded hole. The rotation of the lifting ring 4 drives the first transmission gear 5 to rotate, thereby driving the wheel rod and the second transmission gear 51 to rotate. The second transmission gear 51 is transmitted to the large transmission gear 55 through the third transmission gear 52. The large transmission gear 55 simultaneously drives multiple fourth transmission gears 54 to rotate, thereby driving multiple threaded rods 56 to rotate. The threaded rods 56 and the lifting pile 3 are relatively displaced, so that the threaded rods 56 drive the lifting pile 3 to rise and fall, and the threaded rods 56 and the lifting ring 4 jointly drive the lifting pile 3 to rise and fall, thereby improving the service life of the lifting ring 4 and the threaded rods 56, and providing more stable support for the lifting pile 3.

[0044] Reference Figure 3 and Figure 4 , multiple driving gears 6 are rotatably connected above the base 2, and multiple driving gears 6 are rotatably connected inside the shell, multiple driving gears 6 are all meshed with the lifting ring 4, and multiple driving gears 6 are evenly arranged in a circular array, and the diameter of the driving gears 6 is smaller than the diameter of the lifting ring 4, and the driving gears 6 are fixedly connected to the driving rod 61, and the end of the driving rod 61 away from the driving gear 6 is connected to a hand wheel 62, and the hand wheel 62 is located outside the shell, and the hand wheel 62 is connected to the driving rod 61 by plugging. When necessary, the hand wheel 62 can be replaced with other parts that are convenient for rotating the driving rod 61. Multiple operators can jointly drive the lifting ring 4 to rotate, and multiple operators can jointly drive the lifting pile 3 to rise and fall, and the diameter of the driving gear 6 is smaller than the diameter of the lifting ring 4, and the force of rotating the driving gear 6 is smaller, so that it is easier for the operator to drive the lifting pile 3 to rise and fall. After the transformer body 1 rises to a suitable height, the hand wheel 62 can be removed to avoid the transformer body 1 from rising and falling due to the accidental rotation of the driving rod 61.

[0045] Reference Figure 5When the lifting pile 3 is located in the lifting groove 21, the ball bearings 7 abut against the surface of the lifting pile 3. When the lifting pile 3 rises to the highest point, the spring 71 drives the bayonet 7 to extend out of the pin groove 211, and causes the bayonet 7 to abut against the lower surface of the lifting pile 3. When the lifting pile 3 rises to a suitable height, the spring 71 rebounds and drives the latch 7 to extend in the pin slot 211, so that a part of the latch 7 is located below the lifting pile 3, thereby supporting the lifting pile 3 and fixing the lifting pile 3, while preventing the operator from accidentally touching the hand wheel 62 and causing the lifting pile 3 to fall and cause problems with the mutual inductor. In order to reduce the friction between the lifting pile 3 and the latch 7, the lifting pile 3 can be first raised to a position higher than the suitable position, and after the latch 7 is extended, the lifting pile 3 can be lowered to a suitable height again, so that the gravity of the lifting pile 3 acts on the latch 7.

[0046] Reference Figure 5 A through hole connected to the pin groove 211 is provided on the top of the base 2, and a thread is provided at the lower end of the through hole. An unlocking rod 72 is connected to the thread in the through hole. The surface of the unlocking rod 72 is provided with a thread, and the unlocking rod 72 is spherical at the lower end. A slope is provided on the top of the bayonet 7. When the bayonet 7 is against the lower surface, the unlocking rod 72 is rotated to make the unlocking rod 72 contact with the inclined surface of the bayonet 7, and drive the bayonet 7 to move toward the bottom of the pin groove 211. When the mutual inductor needs to be repaired or replaced, the unlocking rod 72 is screwed into the through hole, so that the unlocking rod 72 contacts the bayonet 7 slope, thereby driving the bayonet 7 to move into the pin groove 211, so that the limit of the bayonet 7 on the lifting pile 3 is released, so that the lifting pile 3 can be lowered, thereby facilitating the repair and replacement of the mutual inductor. The unlocking rod 72 and the base 2 are of a split design, and the unlocking rod 72 can be inserted into the through hole only when needed.

[0047] Reference Figure 6 and Figure 7The connection structure includes a connector 8, which is arranged at the lower end of the transformer body 1. The connector 8 is connected to a plug rod 81 at the lower end. A slot 31 is provided above the lifting pile 3. The plug rod 81 is inserted into the slot 31. A plurality of reinforcing rods 812 are fixedly connected to the connector 8 at the lower end, and the plurality of reinforcing rods 812 are arranged in a circular array. A circular hole is provided at the end of the reinforcing rod 812 away from the connector 8. A reinforcing hole 32 is provided above the lifting pile 3 at a position relative to the reinforcing rod 812. When the connector 8 is connected to the lifting pile 3, the plug rod 81 is inserted into the slot 31, the reinforcing rod 812 is inserted into the reinforcing hole 32, and a locking cavity 33 is provided inside the lifting pile 3 to lock the reinforcing rod 812. The tightening cavity 33 is communicated with the reinforcement hole 32, and a disc 9 is rotatably connected in the locking cavity 33. A plurality of locking rods 91 are connected to the circumferential surface of the disc 9. The rotation of the disc 9 drives the locking rods 91 to enter the circular holes. The disc 9 is connected to a disc rod, and a locking gear 92 is fixedly connected to the end of the disc rod away from the disc 9. The locking gear 92 is meshed with a rack 93. There is a space inside the lifting pile 3 for the rack 93 to slide, and a top block 931 is fixedly connected to one end of the rack 93, and an elastic member 932 is connected to the end of the rack 93 away from the top block 931. A threaded groove is provided on the circumferential surface of the locking cavity 33, and a portion of the top block 931 is located in the threaded groove, and a fastening bolt 94 is threadedly connected in the threaded groove. When installing the transformer body 1, insert the insertion rod 81 into the slot 31, insert the reinforcement rod 812 into the reinforcement hole 32, and then screw the fastening bolt 94 into the threaded groove so that the fastening bolt 94 squeezes the top block 931, thereby causing the rack 93 to drive the locking gear 92 to move, thereby driving the locking rod 91 to be inserted into the circular hole, thereby fixing the reinforcement rod 812 in the reinforcement hole 32, thereby fixing the transformer body 1 and the base.

[0048] Reference Figure 6 and Figure 7 The end of the locking rod 91 is conical. In order to facilitate the locking rod 91 to be smoothly inserted into the circular hole, even if there is a deviation between the positions of the locking rod 91 and the reinforcing rod 812, the locking rod 91 can be smoothly inserted into the circular hole and drive the reinforcing rod 812 to move to the desired position. In addition, a limiting groove 311 is provided on the side surface of the slot 31, and a limiting block 811 is provided on the circumferential surface of the insertion rod 81. When the connector 8 is connected to the lifting pile 3, the limiting block 811 is located in the limiting groove 311, and the upper surface of the limiting groove 311 is sloped. When the limiting block 811 is released from the sloped position, the limiting block 811 can also be affected by gravity and move along the slope into the limiting groove 311, so that the operator can more easily insert the limiting block 811 into the limiting groove 311 and more easily connect the transformer body 1 to the lifting pile 3.

[0049] The specific implementation principle of the present application is as follows: when the transformer needs to be installed, the base is fixed on the ground, and then the transformer body 1 is lifted above the lifting pile 3, and the insertion rod 81 is inserted into the slot 31, and the reinforcement rod 812 is inserted into the insertion hole, and then the fastening bolt 94 is screwed into the threaded groove, so that the fastening bolt 94 squeezes the top block 931, so that the rack 93 drives the locking gear 92 to move, thereby driving the locking rod 91 to be inserted into the round hole, thereby fixing the reinforcement rod 812 in the reinforcement hole 32, and thus the transformer body 1 and the base are fixedly connected. Then the operator drives the driving gear 6 to rotate through the hand wheel 62, thereby driving the lifting ring 4 to rotate, and the lifting ring 4 drives the lifting pile 3 to rise, and at the same time, the lifting ring 4 rotates to drive the first transmission gear 5, the second transmission gear 51, the third transmission gear 52 and the large transmission gear 55 to rotate, and the large transmission gear 55 drives the fourth transmission gear 54 to rotate, thereby driving the threaded rod 56 to rotate, so that the threaded rod 56 and the lifting ring 4 simultaneously lift the lifting pile 3. When the lifting pile 3 is raised to a suitable height, the latch pin 7 is located below the lifting pile 3, and the spring 71 rebounds to drive the latch pin 7 to partially slide out of the pin slot 211, so that the latch pin 7 is partially located below the lifting pile 3, thereby supporting the lifting pile 3, thereby achieving the installation of the transformer body 1. Compared with the installation of the existing transformer, the present application enables the operator to install the transformer body 1 and the base on the ground by setting the lifting pile 3, and then lift the transformer body 1, so that the installation of the transformer is more convenient and safe.

[0050] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. An electronic voltage transformer, characterized in that: The invention comprises a transformer body (1) and a base, wherein the base comprises a pedestal (2) and a lifting pile (3), wherein the pedestal (2) is arranged in the soil, the lifting pile (3) is arranged on the pedestal (2), the lifting pile (3) is connected to a lifting structure for driving the lifting pile (3) to lift, and a connecting structure is arranged above the lifting pile (3), and the connecting structure is used to connect with the transformer body (1); A lifting groove (21) is provided above the base (2), the lifting pile (3) is arranged in the lifting groove (21), the lifting structure comprises a lifting ring (4), the lifting ring (4) is rotatably connected to the top of the base (2), a thread is provided on the inner wall of the lifting ring (4), and a thread is provided on the outer side of the lifting pile (3), and the lifting ring (4) and the lifting pile (3) are connected by threads; The lower surface of the lifting groove (21) is fixedly connected with a square column (22), the lower surface of the lifting pile (3) is provided with a square groove, the square column (22) is inserted into the square groove, and the square column (22) is slidably connected with the lifting pile (3); The lifting ring (4) is provided with gear teeth on the outside, and the lifting ring (4) is meshed with a first transmission gear (5) through the gear teeth. The first transmission gear (5) is fixedly connected to a wheel rod, which is rotatably connected to the base (2). A transmission cavity is provided below the base (2). An end of the wheel rod facing away from the first transmission gear (5) is fixedly connected to a second transmission gear (51). The second transmission gear (51) is located in the transmission cavity. A large transmission gear (55) is rotatably connected in the transmission cavity. The second transmission gear (51) is meshed with a third transmission gear (52). ), the third transmission gear (52) is meshed with the second transmission gear (51) and the large transmission gear (55), a plurality of fourth transmission gears (54) are rotatably connected in the transmission cavity, the plurality of fourth transmission gears (54) are all meshed with the large transmission gear (55), the fourth transmission gear (54) is fixedly connected with a threaded rod (56), the threaded rod (56) passes through the transmission cavity and reaches the lifting groove (21), a threaded hole is opened at a position on the lower surface of the lifting pile (3) facing the threaded rod (56), and the threaded rod (56) is threadedly connected in the threaded hole; The connection structure comprises a connection body (8), the connection body (8) is arranged at the lower end of the mutual inductor body (1), the connection body (8) is connected to an insertion rod (81) at the lower end, a slot (31) is provided above the lifting pile (3), the insertion rod (81) is inserted into the slot (31), a plurality of reinforcing rods (812) are fixedly connected to the connection body (8) at the lower end, and the plurality of reinforcing rods (812) are arranged in a circular array, a circular hole is provided at one end of the reinforcing rod (812) away from the connection body (8), a reinforcing hole (32) is provided above the lifting pile (3) at a position opposite to the reinforcing rod (812), when the connection body (8) is connected to the lifting pile (3), the insertion rod (81) is inserted into the slot (31), the reinforcing rod (812) is inserted into the reinforcement hole (32), and a locking cavity (33) is provided inside the lifting pile (3). The locking cavity (33) is communicated with the reinforcement hole (32). A disc (9) is rotatably connected in the locking cavity (33). A plurality of locking rods (91) are connected to the circumferential surface of the disc (9). The rotation of the disc (9) drives the locking rods (91) to enter the circular hole. The disc (9) is connected to a disc rod. The end of the disc rod away from the disc (9) is fixedly connected to a locking gear (92). The locking gear (92) is meshed with a rack (93). There is a space inside the lifting pile (3) for the rack (93) to slide. A top block (931) is fixedly connected to one end of the rack (93). An elastic member (932) is connected to the end of the rack (93) away from the top block (931). A threaded groove is provided on the circumferential surface of the locking cavity (33). The top block (931) is partially located in the threaded groove. A fastening bolt (94) is threadedly connected in the threaded groove.

2. An electronic voltage transformer according to claim 1, characterized in that: A plurality of driving gears (6) are rotatably connected to the top of the base (2), the plurality of driving gears (6) are all meshed with the lifting ring (4), and the plurality of driving gears (6) are evenly arranged in a circular array, the driving gear (6) is fixedly connected to a driving rod (61), and the end of the driving rod (61) facing away from the driving gear (6) is connected to a hand wheel (62).

3. An electronic voltage transformer according to claim 1, characterized in that: The side wall of the lifting groove (21) is provided with a plurality of pin grooves (211), a bayonet (7) is slidably connected in the pin groove (211), and a spring (71) is connected in the pin groove (211), one end of the spring (71) is fixedly connected to the bayonet (7), and the other end of the spring (71) is fixedly connected to the bottom of the pin groove (211), and a ball is rotatably connected to the end of the bayonet (7) away from the spring (71). When the lifting pile (3) is located in the lifting groove (21), the ball abuts against the surface of the lifting pile (3), and when the lifting pile (3) rises to the highest point, the spring (71) drives the bayonet (7) to extend partly in the pin groove (211), and causes the bayonet (7) to abut against the lower surface of the lifting pile (3).

4. An electronic voltage transformer according to claim 3, characterized in that: A through hole connected to the pin groove (211) is provided on the top of the base (2), a thread is provided at the lower end of the through hole, an unlocking rod (72) is connected to the thread in the through hole, a thread is provided on the surface of the unlocking rod (72), and the unlocking rod (72) is spherical at the lower end, and a slope is provided above the bayonet (7). When the bayonet (7) abuts against the lower surface, the unlocking rod (72) is rotated to make the unlocking rod (72) contact with the inclined surface of the bayonet (7), thereby driving the bayonet (7) to move toward the bottom of the pin groove (211).

5. An electronic voltage transformer according to claim 1, characterized in that: The locking rod (91) is a locking rod (91) with a conical end.

6. An electronic voltage transformer according to claim 1, characterized in that: A limiting groove (311) is provided on the side surface of the slot (31), and a limiting block (811) is provided on the circumferential surface of the insertion rod (81); when the connecting body (8) is connected to the lifting pile (3), the limiting block (811) is located in the limiting groove (311).

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