Adjustable transformer

Abstract

The invention discloses an adjustable transformer, and particularly relates to the technical field of transformers, the adjustable transformer comprises a plurality of transformation windings, a low-voltage terminal, a contact end strip, an electric equipment end strip and an internal synchronous constant-force conductive adjusting mechanism; wherein the internal synchronous constant-force conductive adjusting mechanism comprises a conductive rotating ring, a conductive upper elastic sheet, a conductive lower elastic sheet and an insulating rod. According to the invention, through the internal synchronous constant-force conductive adjusting mechanism, conductive connection between the contact end strip inner wall point position and the electric equipment end strip inner wall point position can be realized through synchronous constant force, double-point synchronous constant-force conductive adjustment can be realized according to the interiors of the contact end strip and the electric equipment end strip, and the transformer is better in adjustable applicability; therefore, the problems that normal transformation operation of the transformer is affected due to poor contact of the transformer, double-point synchronous constant-force adjustment conduction is difficult to realize between a low-voltage terminal of the transformer and a terminal of electric equipment according to the inside, and the adjustable applicability of the transformer is poor are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and more specifically, the present invention relates to an adjustable transformer. Background Art

[0002] An adjustable transformer can adjust the voltage magnitude to adapt to different power demands. This adjustment function is mainly applied to urban power grids. In urban power grids, the voltage is usually 220V or 110V, and a higher voltage is reduced to a normal voltage. This requires an adjustable transformer to lower the voltage to ensure the normal operation of these devices.

[0003] In the existing published literature, the patent with the patent publication number CN204270783U discloses a dry-type transformer for dual-voltage conversion. This technology includes a high-voltage coil A, a high-voltage coil B, and a high-voltage coil C. When the voltage is 6kV, it forms a D-type connection, and when the voltage is 10.5kV, it forms a Y-type connection. By changing the high-voltage phase connection wires, the wiring method of the transformer is changed, thereby realizing the dual-voltage conversion between 6kV and 10.5kV. However, this patent has the following defects.

[0004] During the voltage transformation process of an adjustable transformer, the low-voltage terminals of the transformer need to be locked and fixed to the terminals of the electrical equipment through bolts. After locking, due to the influence of the operating temperature of the transformer and environmental factors, the bolts will loosen due to thermal expansion and contraction factors, resulting in loosening between the low-voltage terminals of the transformer and the terminals of the electrical equipment, leading to poor contact problems of the transformer, affecting the normal voltage transformation operation of the transformer. It is difficult to achieve two-point synchronous fixed-force conductive adjustment inside between the low-voltage terminals of the transformer and the terminals of the electrical equipment, and the adjustable applicability of the transformer is poor. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solution: An adjustable transformer includes a plurality of voltage transformation windings. The top end of each voltage transformation winding is fixedly connected with a low-voltage terminal. The top end of the low-voltage terminal is fixedly connected with a contact end bar. An electrical equipment end bar is slidably arranged on one side of the contact end bar. An internal synchronous fixed-force conductive adjustment mechanism is arranged between the contact end bar and the electrical equipment end bar; the internal synchronous fixed-force conductive adjustment mechanism includes a conductive rotating ring, a conductive upper elastic sheet, a conductive lower elastic sheet, an insulating rod, a reduction motor, and a torque sensor; the conductive rotating ring rotates between the electrical equipment end bar and the contact end bar. The conductive upper elastic sheet is fixed at the top end of the outer wall of the conductive rotating ring. The conductive lower elastic sheet is fixed at the bottom end of the outer wall of the conductive rotating ring. The insulating rod is fixedly installed inside the conductive rotating ring. The reduction motor is installed at one end of the insulating rod, and the reduction motor is used to drive the insulating rod to rotate. The torque sensor is installed at the other end of the insulating rod.

[0006] Preferably, the conductive upper spring sheet is slidably connected to the contact end bar, and the conductive lower spring sheet is slidably connected to the end bar of the electrical equipment. The output end of the reduction motor is fixedly connected to the insulating rod, and the sensing end of the torque sensor is fixedly connected to the insulating rod. A plurality of mounting bolts are inserted on one side of the end bar of the electrical equipment, and the contact end bar is fixedly connected to the end bar of the electrical equipment by mounting bolts. A support bar is fixedly connected to the lower surface of the reduction motor, and a controller is fixedly installed on the upper inclined surface of the support bar and located on one side of the reduction motor. The reduction motor and the torque sensor are both electrically connected to the controller. A reinforcement bar is provided on one side of the support bar, and the reinforcement bar is fixedly connected to the transformer winding. Two support frames are provided above the support bar, and the support bar is fixedly connected to the support frame. A plurality of iron cores are fixedly connected between the two support frames, and the iron cores are fixedly connected to the transformer winding; a plurality of high-voltage terminals are fixedly installed on one side of the other support frame, and a connecting wire is fixedly connected to the outer wall of each high-voltage terminal, and the connecting wire is fixedly connected to the transformer winding. A support bar is installed at the bottom end of the torque sensor, and the support frame is fixedly connected to the support bar.

[0007] When this technology is used, when the gap between the contact end strip and the end strip of the electrical equipment becomes larger, a gap is generated between the conductive lower spring sheet and the end strip of the electrical equipment, and the torque force on the conductive swivel becomes smaller. The torque force sensing of the insulating rod is realized through the torque sensor. When the torque force value sensed by the torque sensor is lower than the torque force value set by the controller, the reduction motor is started by the controller, and the reduction motor drives the insulating rod to rotate counterclockwise. The conductive swivel drives the conductive lower spring sheet to rotate counterclockwise, and the conductive upper spring sheet is squeezed on one side of the inner wall of the contact end strip. At the same time, the conductive lower spring sheet is squeezed on one side of the inner wall of the end strip of the electrical equipment. When the torque force value sensed by the torque sensor is the same as the torque force set by the controller, the inner wall points of the contact end strip and the inner wall points of the end strip of the electrical equipment can be synchronously fixed to achieve conductive connection.

[0008] Preferably, a conductive block is fixedly connected to the other side of the contact end bar, and an external conductive adjustment component is installed on one side of the conductive block; the external conductive adjustment component includes an external conductive bar, a conductive voltage bar, an arc-shaped conductive bar and a V-shaped conductive bar; the external conductive bar is fixed to one end of the conductive block, and the conductive voltage bar is fixedly located on one side of the inner wall of the external conductive bar, the arc-shaped conductive bar is fixedly connected to one side of the conductive voltage bar, and the arc-shaped conductive bar is slidably connected to the end bar of the electrical equipment, the V-shaped conductive bar is located below the arc-shaped conductive bar, and the V-shaped conductive bar is fixedly connected to the external conductive bar, and the V-shaped conductive bar is slidably connected to the end bar of the electrical equipment. The vertical cross-section of the arc-shaped conductive bar is an arc, and the vertical cross-section of the V-shaped conductive bar is V-shaped.

[0009] When this technology is in use, when the terminal bar of the electrical equipment is subjected to the extrusion force of the conductive lower elastic piece, the terminal bar of the electrical equipment is squeezed and pressed on the arc-shaped conductive bar, and the terminal bar of the electrical equipment is squeezed and pressed on the V-shaped conductive bar. The conductive block supports the outer conductive bar, the outer conductive bar supports the V-shaped conductive bar, the voltage-conducting bar supports the arc-shaped conductive bar, and the outside of the terminal bar of the electrical equipment can achieve conductive contact with the arc-shaped conductive bar and the V-shaped conductive bar.

[0010] Preferably, a limiting ring is slidably connected to one side of the conductive rotating ring, and the limiting ring is slidably connected to the insulating rod. A guiding and limiting assembly is installed at the bottom end of the outer wall of the limiting ring; The guiding and limiting assembly includes a connecting bar fixedly installed at the bottom end of the outer wall of the limiting ring. The bottom end of the connecting bar is fixedly connected with a guiding bar. Both the terminal bar of the electrical equipment and the contact terminal bar are slidably connected to the guiding bar. A reinforcing support bar is fixedly installed at one end of the guiding bar, and one end of the reinforcing support bar is fixedly connected with a limiting guiding bar. An inclined support bar is fixedly connected to the upper surface of the guiding bar and at a position on one side of the connecting bar. Both the contact terminal bar and the terminal bar of the electrical equipment are slidably connected to the limiting guiding bar. The outer walls of both the limiting guiding bar and the guiding bar are smooth surfaces.

[0011] When this technology is in use, when the terminal bar of the electrical equipment is subjected to the extrusion force of the conductive lower elastic piece, the inclined support bar supports the guiding bar, and the reinforcing support bar supports the limiting guiding bar. In this way, the terminal bar of the electrical equipment will achieve guiding and limiting sliding along the limiting guiding bar, and the terminal bar of the electrical equipment will achieve guiding and limiting sliding along the guiding bar.

[0012] Technical effects and advantages of the present invention: 1. Through the internal synchronous fixed-force conductive adjustment mechanism of the present invention, when thermal expansion and contraction looseness occurs between the terminal bar of the electrical equipment and the contact terminal bar, when the torque force value sensed by the torque sensor is lower than the torque force value set by the controller, the controller starts the reduction motor. The reduction motor drives the insulating rod to rotate counterclockwise, the conductive rotating ring drives the conductive upper elastic piece to rotate counterclockwise, and the conductive rotating ring also drives the conductive lower elastic piece to rotate counterclockwise. When the torque force value sensed by the insulating rod is the same as the torque force set by the controller, the inner wall points of the contact terminal bar and the inner wall points of the terminal bar of the electrical equipment can achieve conductive connection with synchronous fixed force, and double-point synchronous fixed-force adjustment of conduction can be realized inside the contact terminal bar and the terminal bar of the electrical equipment, and the adjustable applicability of the transformer is better.

[0013] 2. By using the external conductive adjustment component of the present invention, when the terminal bar of the electrical equipment is subjected to the extrusion force of the conductive lower elastic piece, the terminal bar of the electrical equipment is squeezed and pressed on the arc-shaped conductive bar, the arc-shaped conductive bar is squeezed and pressed on the voltage-conducting bar, the V-shaped conductive bar is squeezed on the outer conductive bar, and the outer conductive bar will also provide a supporting force for the voltage-conducting bar. The outside of the terminal bar of the electrical equipment can achieve double-point synchronous fixed-force adjustment of conduction with the arc-shaped conductive bar and the V-shaped conductive bar.

[0014] 3. The present invention adopts a guiding and limiting component. When the terminal bar of the electrical equipment is subjected to the extrusion force of the conductive lower elastic sheet, the inclined support bar is supported by the support frame, the reinforcing bar is supported by the guiding bar, and the limiting guiding bar is supported by the reinforcing bar. The terminal bar of the electrical equipment will realize guiding and limiting sliding along the limiting guiding bar, and the terminal bar of the electrical equipment will realize guiding and limiting sliding along the guiding bar, so as to realize guiding adjustment of conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of the adjustable transformer of the present invention.

[0016] Figure 2 It is a partial structural schematic diagram of the cut-off connection between the transformer winding and the low-voltage terminal of the present invention.

[0017] Figure 3 For the present invention Figure 2 The enlarged structural schematic diagram at position A.

[0018] Figure 4 It is a partial structural schematic diagram of the cut-off connection between the torque sensor and the support bar of the present invention.

[0019] Figure 5 It is a rear view structural schematic diagram of the adjustable transformer of the present invention.

[0020] Figure 6 It is a top view structural schematic diagram of the cross-section of the adjustable transformer of the present invention.

[0021] Figure 7 It is a partial structural schematic diagram of the cut-off connection between the terminal bar of the electrical equipment and the contact terminal bar of the present invention.

[0022] Figure 8 For the present invention Figure 6 The enlarged structural schematic diagram at position B.

[0023] Figure 9 It is a front view structural schematic diagram of the guiding and limiting component of the present invention.

[0024] Reference numerals are: 1, transformer winding; 2, low-voltage terminal; 3, contact terminal bar; 4, terminal bar of electrical equipment; 5, conductive rotating ring; 6, conductive upper elastic sheet; 7, conductive lower elastic sheet; 8, insulating rod; 9, reduction motor; 10, torque sensor; 11, mounting bolt; 12, support bar; 13, controller; 14, reinforcing bar; 15, support frame; 16, iron core; 17, connecting wire; 18, high-voltage terminal; 19, conductive block; 20, external conductive bar; 21, voltage-conducting bar; 22, arc-shaped conductive bar; 23, V-shaped conductive bar; 24, limiting ring; 25, connecting bar; 26, guiding bar; 27, inclined support bar; 28, reinforcing support bar; 29, limiting guiding bar; 30, support bar. DETAILED DESCRIPTION OF THE INVENTION

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] As shown in the attached Figure 1 -attached Figure 9 Shown is an adjustable transformer. An internal synchronous fixed-force conductive adjustment mechanism, an external conductive adjustment component, and a guiding and limiting component are provided on the adjustable transformer. The settings of each mechanism and component can enable the inner wall points of the contact terminal strip 3 and the inner wall points of the electrical equipment terminal strip 4 to achieve conductive connection with synchronous fixed force, and can adjust the conduction with double-point synchronous fixed force inside the contact terminal strip 3 and the electrical equipment terminal strip 4. The adjustable applicability of the transformer is better. The specific structural settings of each mechanism and component are as follows.

[0027] In this embodiment, as shown in the attached Figure 1 -attached Figure 4 Shown, the top end of each transformer winding 1 is fixedly connected with a low-voltage terminal 2. The top end of the low-voltage terminal 2 is fixedly connected with a contact terminal strip 3. An electrical equipment terminal strip 4 is slidably arranged on one side of the contact terminal strip 3. An internal synchronous fixed-force conductive adjustment mechanism is arranged between the contact terminal strip 3 and the electrical equipment terminal strip 4; the internal synchronous fixed-force conductive adjustment mechanism includes a conductive rotating ring 5, a conductive upper elastic sheet 6, a conductive lower elastic sheet 7, an insulating rod 8, a reduction motor 9, and a torque sensor 10.

[0028] The conductive rotating ring 5 rotates between the electrical equipment terminal strip 4 and the contact terminal strip 3. The conductive upper elastic sheet 6 is fixed to the top end of the outer wall of the conductive rotating ring 5. The conductive lower elastic sheet 7 is fixed to the bottom end of the outer wall of the conductive rotating ring 5. The insulating rod 8 is fixedly installed inside the conductive rotating ring 5. The reduction motor 9 is installed at one end of the insulating rod 8, and the reduction motor 9 is used to drive the insulating rod 8 to rotate. The torque sensor 10 is installed at the other end of the insulating rod 8. The conductive upper elastic sheet 6 is slidably connected with the contact terminal strip 3, and the conductive lower elastic sheet 7 is slidably connected with the electrical equipment terminal strip 4. The output end of the reduction motor 9 is fixedly connected with the insulating rod 8, and the sensing end of the torque sensor 10 is fixedly connected with the insulating rod 8. A plurality of mounting bolts 11 are inserted on one side of the electrical equipment terminal strip 4. The contact terminal strip 3 and the electrical equipment terminal strip 4 are fixedly connected through the mounting bolts 11.

[0029] In this embodiment, as shown in the attached Figure 1 -attached Figure 5As shown, a support bar 12 is fixedly connected to the lower surface of the reduction motor 9. A controller 13 is fixedly installed on the upper inclined surface of the support bar 12 and on one side of the reduction motor 9. Both the reduction motor 9 and the torque sensor 10 are electrically connected to the controller 13. In order to support the support bar 12 by the support frame 15 and the controller 13 by the support bar 12. When the torque force value sensed by the torque sensor 10 is lower than the torque force value set by the controller 13, the reduction motor 9 is started by the controller 13. A reinforcing bar 14 is provided on one side of the support bar 12, and the reinforcing bar 14 is fixedly connected to the transformer winding 1. Two support frames 15 are provided above the support bar 12, and the support bar 12 is fixedly connected to the support frames 15. In order to enable the reinforcing bar 14 to provide a reinforcing support force to the tops of multiple transformer windings 1, and the support frames 15 support the iron core 16 to increase the stability of the iron core 16. A plurality of iron cores 16 are fixedly connected between the two support frames 15, and the iron cores 16 are fixedly connected to the transformer winding 1; A plurality of high-voltage terminals 18 are fixedly installed on one side of another support frame 15. A connection wire 17 is fixedly connected to the outer wall of each high-voltage terminal 18, and the connection wire 17 is fixedly connected to the transformer winding 1. In order to connect the end bar 4 of the electrical equipment to the low-voltage electrical equipment, the high-voltage wire harness is connected to the high-voltage terminal 18, and the high-voltage terminal 18 delivers the high voltage to the connection wire 17, and the connection wire 17 realizes the step-down operation through the transformer winding 1. A support bar 30 is installed at the bottom end of the torque sensor 10, and the support frame 15 is fixedly connected to the support bar 30. In order to enable the support frame 15 to support the support bar 30 and the support bar 30 to support the torque sensor 10 to increase the stability of the torque sensor 10.

[0030] In this embodiment, as shown in the attached Figure 3 -attached Figure 7 figure, on the other side of the contact end bar 3, a conductive block 19 is fixedly connected, and an external conductive adjustment component is installed on one side of the conductive block 19; The external conductive adjustment component includes an external conductive bar 20, a voltage-conducting bar 21, an arc-shaped conductive bar 22, and a V-shaped conductive bar 23.

[0031] The external conductive bar 20 is fixed to one end of the conductive block 19, and the voltage-conducting bar 21 is fixed on one side of the inner wall of the external conductive bar 20. The arc-shaped conductive bar 22 is fixedly connected to one side of the voltage-conducting bar 21, and the arc-shaped conductive bar 22 is slidably connected to the end bar 4 of the electrical equipment. The V-shaped conductive bar 23 is located below the arc-shaped conductive bar 22, and the V-shaped conductive bar 23 is fixedly connected to the external conductive bar 20, and the V-shaped conductive bar 23 is slidably connected to the end bar 4 of the electrical equipment. The vertical cross-sectional shape of the arc-shaped conductive bar 22 is circular arc-shaped, and the vertical cross-sectional shape of the V-shaped conductive bar 23 is V-shaped.

[0032] In this embodiment, as shown in the attached Figure 8 -attached Figure 9As shown in the figure, one side of the conductive slip ring 5 is slidably connected with a limit ring 24, and the limit ring 24 is slidably connected with the insulating rod 8. A guiding and limiting component is installed at the bottom end of the outer wall of the limit ring 24. The guiding and limiting component includes a connecting strip 25 fixedly installed at the bottom end of the outer wall of the limit ring 24. The bottom end of the connecting strip 25 is fixedly connected with a guiding strip 26. Both the end strip 4 of the electrical equipment and the contact end strip 3 are slidably connected with the guiding strip 26. A reinforcing support strip 28 is fixedly installed at one end of the guiding strip 26. One end of the reinforcing support strip 28 is fixedly connected with a limiting guide strip 29. An inclined support strip 27 is fixedly connected to the upper surface of the guiding strip 26 and at a position on one side of the connecting strip 25. Both the contact end strip 3 and the end strip 4 of the electrical equipment are slidably connected with the limiting guide strip 29. The outer walls of both the limiting guide strip 29 and the guiding strip 26 are smooth surfaces.

[0033] The working principle of the adjustable transformer of the present invention is as follows: First, when the present invention is used for voltage transformation, the end strip 4 of the electrical equipment is docked on the low-voltage electrical equipment, and the high-voltage wire harness is docked on the high-voltage terminal 18. The high voltage is transmitted to the connecting wire 17 through the high-voltage terminal 18. The connecting wire 17 realizes voltage reduction through the voltage transformation winding 1, and the iron core 16 plays a role in reducing eddy current loss. It is transmitted to the low-voltage terminal 2 through the voltage transformation winding 1 at a low voltage, then to the contact end strip 3 through the low-voltage terminal 2 at a low voltage, and then to the end strip 4 of the electrical equipment through the contact end strip 3 at a low voltage. The end strip 4 of the electrical equipment can supply power to the electrical equipment at a low voltage.

[0034] Second, when the present invention conducts internal synchronous fixed-force conductive adjustment, when the end strip 4 of the electrical equipment and the contact end strip 3 become loose due to thermal expansion and contraction, the mounting bolt 11 will also become loose. In this way, a gap is generated between the end strip 4 of the electrical equipment and the contact end strip 3, resulting in a poor connection firmness between the contact end strip 3 and the end strip 4 of the electrical equipment. The support frame 15 supports the support strip 12, and the support strip 12 supports the controller 13. When the gap between the contact end strip 3 and the end strip 4 of the electrical equipment becomes larger, a gap is generated between the conductive lower elastic piece 7 and the end strip 4 of the electrical equipment. The torque force for the conductive lower elastic piece 7 to rotate becomes smaller, so the torque force on the conductive slip ring 5 becomes smaller, and the torque force on the insulating rod 8 becomes smaller. The torque sensor 10 senses the torque force on the insulating rod 8. At the same time, the support frame 15 supports the support strip 30, and the support strip 30 supports the torque sensor 10.

[0035] In this way, the torque sensor 10 senses the torque force on the insulating rod 8. When the torque force value sensed by the torque sensor 10 is lower than the torque force value set by the controller 13, the reduction motor 9 is started by the controller 13. The reduction motor 9 drives the insulating rod 8 to rotate counterclockwise. The insulating rod 8 drives a plurality of conductive rotating rings 5 to rotate counterclockwise. The conductive rotating rings 5 drive the conductive upper elastic sheet 6 to rotate counterclockwise, and the conductive rotating rings 5 also drive the conductive lower elastic sheet 7 to rotate counterclockwise. The conductive upper elastic sheet 6 is pressed against one side of the inner wall of the contact terminal bar 3. At the same time, the conductive lower elastic sheet 7 is pressed against one side of the inner wall of the electrical equipment terminal bar 4. The torque sensor 10 senses the torque force on the insulating rod 8. When the torque force value sensed by the torque sensor 10 is the same as the torque force set by the controller 13, the positions on the inner wall of the contact terminal bar 3 and the positions on the inner wall of the electrical equipment terminal bar 4 can achieve conductive connection with synchronous fixed force. The moving directions described above mainly refer to the Figure 3 view directions.

[0036] Then, when the present invention performs external conductive adjustment, when the electrical equipment terminal bar 4 is subjected to the extrusion force of the conductive lower elastic sheet 7, the electrical equipment terminal bar 4 is pressed against the arc-shaped conductive bar 22 under force. The arc-shaped conductive bar 22 is pressed against the voltage-conducting bar 21 under force. At the same time, the electrical equipment terminal bar 4 is pressed against the V-shaped conductive bar 23. The V-shaped conductive bar 23 is pressed against the outer conductive bar 20. The outer conductive bar 20 is supported by the conductive block 19. The outer conductive bar 20 supports the V-shaped conductive bar 23, and the outer conductive bar 20 also provides a supporting force for the voltage-conducting bar 21. The voltage-conducting bar 21 supports the arc-shaped conductive bar 22. In this way, the outside of the electrical equipment terminal bar 4 can achieve conductive contact with the arc-shaped conductive bar 22 and the V-shaped conductive bar 23.

[0037] Finally, when the present invention performs guiding and limiting, when the electrical equipment terminal bar 4 is subjected to the extrusion force of the conductive lower elastic sheet 7, the inclined support bar 27 is supported by the support frame 15. The inclined support bar 27 supports the guiding bar 26. The guiding bar 26 supports the reinforcing bar 28. The reinforcing bar 28 supports the limiting guiding bar 29. In this way, the electrical equipment terminal bar 4 will achieve guiding and limiting sliding along the limiting guiding bar 29. At the same time, the electrical equipment terminal bar 4 will achieve guiding and limiting sliding along the guiding bar 26.

[0038] Contents not described in detail in the specification belong to the prior art well-known to those skilled in the art. The model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art, and will not be described here either.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable transformer, comprising a plurality of transformer windings (1), each transformer winding (1) having a top end fixedly connected to a low voltage terminal (2), and a top end of the low voltage terminal (2) having a contact terminal bar (3), characterized in that: An electrical equipment end strip (4) is slidably provided on one side of the contact end strip (3), and an internal synchronous constant force conductive adjustment mechanism is provided between the contact end strip (3) and the electrical equipment end strip (4); The internal synchronous constant force conductive adjustment mechanism comprises a conductive rotating ring (5), a conductive upper spring sheet (6), a conductive lower spring sheet (7), an insulating rod (8), a reduction motor (9) and a torque sensor (10); The conductive rotating ring (5) is rotatably located between the end bar (4) of the electrical equipment and the contact end bar (3); the conductive upper spring sheet (6) is fixed to the top end of the outer wall of the conductive rotating ring (5); the conductive lower spring sheet (7) is fixed to the bottom end of the outer wall of the conductive rotating ring (5); the insulating rod (8) is fixedly mounted inside the conductive rotating ring (5); the reduction motor (9) is mounted on one end of the insulating rod (8), and the reduction motor (9) is used to drive the insulating rod (8) to rotate; and the torque sensor (10) is mounted on the other end of the insulating rod (8).

2. The adjustable transformer according to claim 1, characterized in that: The conductive upper spring sheet (6) is slidably connected to the contact terminal strip (3), and the conductive lower spring sheet (7) is slidably connected to the electrical equipment terminal strip (4).

3. The adjustable transformer according to claim 1, characterized in that: The output end of the reduction motor (9) is fixedly connected to the insulating rod (8), and the sensing end of the torque sensor (10) is fixedly connected to the insulating rod (8).

4. The adjustable transformer according to claim 1, characterized in that: A plurality of mounting bolts (11) are inserted into one side of the electrical equipment end bar (4), and the contact end bar (3) and the electrical equipment end bar (4) are fixedly connected via the mounting bolts (11).

5. The adjustable transformer according to claim 1, characterized in that: A support bar (12) is fixedly connected to the lower surface of the reduction motor (9); a controller (13) is fixedly installed on the upper inclined surface of the support bar (12) and located on one side of the reduction motor (9); the reduction motor (9) and the torque sensor (10) are both electrically connected to the controller (13); a reinforcement bar (14) is provided on one side of the support bar (12); the reinforcement bar (14) is fixedly connected to the transformer winding (1); two support frames (15) are provided above the support bar (12); the support bar (12) and the support frame (15) are fixedly connected; a plurality of iron cores (16) are fixedly connected between the two support frames (15); and the iron cores (16) are fixedly connected to the transformer winding (1); A plurality of high-voltage terminals (18) are fixedly mounted on one side of another of the support frames (15), and a connecting wire (17) is fixedly connected to the outer wall of each of the high-voltage terminals (18), and the connecting wire (17) is fixedly connected to the transformer winding (1).

6. The adjustable transformer according to claim 5, characterized in that: A support bar (30) is installed at the bottom end of the torque sensor (10), and the support frame (15) and the support bar (30) are fixedly connected.

7. The adjustable transformer according to claim 1, characterized in that: A conductive block (19) is fixedly connected to the other side of the contact end strip (3), and an external conductive adjustment component is installed on one side of the conductive block (19); The external conductive adjustment component comprises an outer conductive strip (20), a conductive voltage strip (21), an arc-shaped conductive strip (22) and a V-shaped conductive strip (23); The outer conductive strip (20) is fixed to one end of the conductive block (19), and the conductive strip (21) is fixedly located on one side of the inner wall of the outer conductive strip (20); the arc-shaped conductive strip (22) is fixedly connected to one side of the conductive strip (21), and the arc-shaped conductive strip (22) is slidably connected to the end strip (4) of the electrical equipment; the V-shaped conductive strip (23) is located below the arc-shaped conductive strip (22), and the V-shaped conductive strip (23) is fixedly connected to the outer conductive strip (20), and the V-shaped conductive strip (23) is slidably connected to the end strip (4) of the electrical equipment.

8. The adjustable transformer according to claim 7, characterized in that: The vertical cross-section shape of the arc-shaped conductive strip (22) is an arc shape, and the vertical cross-section shape of the V-shaped conductive strip (23) is a V shape.

9. The adjustable transformer according to claim 1, characterized in that: One side of the conductive rotating ring (5) is slidably connected to a limit ring (24), and the limit ring (24) is slidably connected to the insulating rod (8), and a guide limit assembly is installed at the bottom end of the outer wall of the limit ring (24); The guide and limit assembly comprises a connecting bar (25) fixedly mounted on the bottom end of the outer wall of the limit ring (24); the bottom end of the connecting bar (25) is fixedly connected to a guide bar (26); the electrical equipment end bar (4) and the contact end bar (3) are both slidably connected to the guide bar (26); a reinforcing support bar (28) is fixedly mounted on one end of the guide bar (26); one end of the reinforcing support bar (28) is fixedly connected to a limit guide bar (29); and an inclined support bar (27) is fixedly connected to the upper surface of the guide bar (26) and located at a position on one side of the connecting bar (25).

10. The adjustable transformer according to claim 9, characterized in that: The contact end bar (3) and the electrical equipment end bar (4) are both slidably connected to the limiting guide bar (29), and the outer wall of the limiting guide bar (29) and the outer wall of the guide bar (26) are both smooth surfaces.

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