Low voltage terminal block connection structure of distribution transformer

Abstract

The present invention discloses a low-voltage terminal block connection structure for a distribution transformer, and specifically relates to the field of conductive connection technology, including an insulating mounting plate, a conductive plate, a conductive terminal head, a bolt, a rotating cap, and a conductive connection tightening assembly; wherein the conductive connection tightening assembly includes a slot column, a pressure block, a reduction motor, a support ring, a misalignment distance sensor, and a positioning distance sensor, and also includes a conductive docking tightening assembly and a conductive loosening sensor assembly. The present invention has the advantages of timely detecting loosening of a conductive wire harness, being able to automatically lock the bolts in time, and greatly improving the self-maintenance effect of the conductive connection through the conductive connection tightening assembly, thereby solving the problem that after the bolts produced by conductive extrusion become loose, it is easy to cause them to fall off and power off, it is difficult to timely detect loosening of the conductive wire harness, it is difficult to timely realize automatic locking, and the self-maintenance effect of the conductive connection is poor.

Description

Technical Field

[0001] The present invention relates to the field of conductive connection technology, and more specifically, to a low-voltage terminal piece connection structure for a distribution transformer. Background Art

[0002] The conductive connection structure of the low-voltage terminal of the distribution transformer is mainly a bridge conductive technology between the transformer and the low-voltage distribution system, responsible for stably and reliably transmitting the power output of the transformer to the low-voltage distribution system. Through this structure, the transformer can achieve connection with the external load, thereby completing the conversion and transmission of power.

[0003] In the existing public documents, the patent with patent announcement number CN218867393U discloses a low-voltage terminal lug connection structure for a distribution transformer. This technology uses bolts to pass through the first mounting hole provided on the longitudinal fixing part and the second mounting hole provided on the copper busbar in sequence, and locks them with nuts. In the low-voltage terminal lug connection structure for a distribution transformer of this utility model, the low-voltage bushing and the terminal lug are connected by fasteners, and the terminal lug and the copper busbar are connected by bolts. The structural design is reasonable, the reliability of use is high, and it can also avoid the damage to the lead encapsulation insulation caused by the high temperature generated during the original welding process. However, this technology still has the following defects.

[0004] When connecting the low-voltage conductive wire harness of the distribution transformer, a low-voltage terminal block is required to connect the two conductive wire harnesses to achieve low-voltage power distribution and power supply operation. The conductive wire harness needs to be squeezed by bolts during the power distribution process. During the use of the transformer, the mechanical vibration of the transformer and temperature changes may cause the conductive squeezing bolts to loosen, resulting in falling off and power outages. It is difficult to detect the looseness of the conductive wire harness in time, and it is difficult to achieve automatic locking in time, and the self-maintenance effect of the conductive connection 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 solutions: a low-voltage terminal piece connection structure of a distribution transformer, comprising an insulating mounting plate, a conductive sheet is fixedly connected to the top of the insulating mounting plate, and a conductive terminal head is fixedly connected to the top and bottom of the conductive sheet, and a threaded bolt is provided on the inner wall of the conductive terminal head, and a rotating cap is fixedly connected to one end of the bolt, and a conductive connection calibration assembly is provided on one side of the rotating cap; the conductive connection calibration assembly comprises a slot column arranged on one side of the rotating cap, a pressure block is fixedly connected to one side of the outer wall of the slot column, a reduction motor is installed on one end of the slot column, and the output end of the reduction motor is fixedly connected to the slot column, and a support ring is fixedly connected to the outer wall of the reduction motor; a misalignment distance sensor is fixedly installed inside the pressure block, and a positioning distance sensor is fixedly connected to the inner wall of the slot column; a conductive docking calibration assembly is provided on the outer wall of the support ring; and a conductive looseness sensor assembly is provided on one end face of the rotating cap.

[0006] Preferably, the two conductive terminals are symmetrically arranged about the conductive sheet, and the insulating mounting plate is used to support the conductive sheet. The reduction motor is used to drive the slot column to rotate, and one end face of the misalignment distance sensor and one end face of the positioning distance sensor are in the same vertical plane. A controller is fixedly installed on one side of the insulating mounting plate, and a plurality of mounting holes are opened at the bottom end of the insulating mounting plate; the plurality of mounting holes are arranged in a rectangular and equidistant manner.

[0007] When this technology is used for electrical conduction, the reduction motor drives the slot column to rotate, and the pressure block drives the misaligned distance sensor to rotate. When the distance value sensed by the misaligned distance sensor is the same as the distance value set by the controller, the reduction motor is turned off by the controller, which causes the pressure block to be misaligned with the calibration turn block. The linkage bar is pushed to the right by the micro-electric cylinder, and the push bar drives the sleeve block to move right. The sleeve block slides right along the inner wall of the guide frame, and the support ring drives the reduction motor to move right. The slot column causes the positioning distance sensor to move right. When the distance value sensed by the positioning distance sensor is the same as the distance value set by the controller, the micro-electric cylinder is turned off by the controller, so that the pressure block moves right to one side of the calibration turn block. The reduction motor drives the slot column to rotate clockwise, and the clockwise rotation of the pressure block drives the calibration turn block to rotate clockwise. The bolt and the conductive terminal are threadedly connected and rotated, so that the bolt drives the induction ring to move right. When the distance value sensed by the second infrared distance sensor is the same as the distance value set by the controller, the bolt automatically tightens and restores the transformer low-voltage wiring harness inside the conductive terminal.

[0008] Preferably, the conductive docking tightening assembly includes a push bar fixedly arranged on the outer wall of the support ring; the conductive docking tightening assembly also includes a socket block, a guide rod, a guide frame, a linkage bar and a micro-electric cylinder; the socket block is fixed to one end of the push bar, the guide rod is slidably located on the inner wall of the socket block, the guide frame is fixedly installed on one end of the guide rod, the linkage bar is fixed on the upper surface of the push bar, and the micro-electric cylinder is fixedly installed on the upper surface of the guide frame, and the output end of the micro-electric cylinder is fixedly connected to the linkage bar; the conductive docking tightening assembly also includes a threaded socket block, a screw, a support frame, a drive motor, a first infrared distance sensor and a support bar.

[0009] The threaded sleeve is fixed on one side of the guide frame, the screw is threadedly connected to the inner wall of the threaded sleeve, the support frame is slidably connected to the outer wall of the threaded sleeve, the drive motor is fixedly installed on the top of the support frame, and the drive motor is used to drive the screw to rotate. The first infrared distance sensor is located on one side of the screw; the support bar is fixed on one side of the support frame, and the support bar is fixedly installed between the insulating mounting plate. The screw is rotatably connected to the support frame, and the outer wall of the threaded sleeve and the inner wall of the support frame are both smooth surfaces. The micro-electric cylinder and the guide frame are both slidably connected to the support frame, and the output end of the drive motor is fixedly connected to the screw.

[0010] The first infrared distance sensor is fixedly connected to the support frame, and a gap is provided between the first infrared distance sensor and the screw rod.

[0011] When this technology is used for electrical conduction, the drive motor drives the screw to rotate, and at the same time, the threaded sleeve drives the guide frame to move downward, the guide rod drives the sleeve block to move downward, the push rod drives the support ring to move downward, the reduction motor drives the slot column to move downward, and the pressure block drives the misaligned distance sensor to move downward. When the distance value sensed by the first infrared distance sensor is the same as the distance value set by the controller, the drive motor is turned off by the controller. At this time, the center point of the slot column and the center point of the bolt are at the same horizontal line position.

[0012] Preferably, the conductive looseness sensor assembly includes a calibration rotary block fixedly arranged on one end face of the rotary cap; an induction ring is fixedly connected to the outer wall of the bolt, a second infrared distance sensor is arranged on one side of the induction ring, a socket is fixedly connected to the outer wall of the second infrared distance sensor, and the socket is fixedly connected to the conductive terminal; each conductive terminal is provided with a connecting wire hole inside. The vertical cross-section of the induction ring is circular, and the socket is used to support the second infrared distance sensor.

[0013] When this technology is used for electrical conduction, the transformer low-voltage wiring harness is inserted into the connecting wire hole inside the conductive terminal head. The turning cap drives the bolt to rotate, and the bolt is squeezed on the transformer low-voltage wiring harness inside the conductive terminal head. The second infrared distance sensor realizes distance sensing of the induction ring. When the distance value sensed by the second infrared distance sensor is the same as the distance set by the controller, the bolt is squeezed on the transformer low-voltage wiring harness inside the conductive terminal head according to the specified position to realize the locking operation. At the same time, another transformer low-voltage wiring harness is inserted into another conductive terminal head, and another turning cap drives another bolt to rotate. When the sensed distance value is the same as the distance value set by the controller, the locking operation of the specified position of the other transformer low-voltage wiring harness is realized.

[0014] Technical effects and advantages of the present invention:

[0015] 1. The present invention connects the tightening component through the conductive connection, and the reduction motor drives the slot column to rotate. When the distance value sensed by the misaligned distance sensor is the same as the distance value set by the controller, the reduction motor is closed by the controller, so that the pressure block and the proofreading rotating block are misaligned, so that the proofreading rotating block will not block the right movement of the pressure block, and the slot column causes the positioning distance sensor to move right. At the same time, the slot column drives the pressure block to move right. The pressure block moves right and is located on one side of the proofreading rotating block. The reduction motor drives the slot column to rotate clockwise, and the clockwise rotation of the pressure block drives the proofreading rotating block to rotate clockwise. When the distance value sensed by the second infrared distance sensor is the same as the distance value set by the controller, the bolt realizes automatic tightening and recovery of the transformer low-voltage wiring harness inside the conductive terminal head, and the looseness of the conductive wiring harness can be discovered in time, and the bolt can be automatically tightened in time, which greatly improves the self-maintenance effect of the conductive connection.

[0016] 2. The present invention utilizes a conductive docking and tightening assembly to detect when a bolt becomes loose. Thus, the driving motor is immediately started through the controller, and the screw drives the threaded sleeve block to move downward under the action of the thread transmission force, and the guide rod drives the sleeve block to move downward. The sleeve block causes the push bar to move downward, and the pressure block drives the misaligned distance sensor to move downward. When the distance value sensed by the first infrared distance sensor is the same as the distance value set by the controller, the center point of the slot column and the center point of the bolt are at the same horizontal line position, and the linkage bar is pushed to the right by the micro-electric cylinder. When the distance value sensed by the positioning distance sensor is the same as the distance value set by the controller, the pressure block is moved to the right to one side of the proofreading rotating block for rotation proofreading and locking. Therefore, the looseness of the conductive harness can be discovered in time, and the bolt can be automatically tightened in time.

[0017] 3. The present invention adopts a conductive looseness sensing component, and inserts the transformer low-voltage wiring harness into the connecting wire hole inside the conductive terminal head. The turning cap drives the bolt to rotate. The bolt and the conductive terminal head move right under the action of the thread transmission force, and the bolt is squeezed on the transformer low-voltage wiring harness inside the conductive terminal head. The second infrared distance sensor realizes distance sensing of the induction ring. When the distance value sensed by the second infrared distance sensor is the same as the distance set by the controller, the bolt is squeezed on the transformer low-voltage wiring harness inside the conductive terminal head according to the specified position. Another second infrared distance sensor realizes distance sensing of another induction ring. When the sensed distance value is the same as the distance value set by the controller, the locking operation of the specified position of the other transformer low-voltage wiring harness is realized. When the bolt is loose, the distance value sensed by the second infrared distance sensor to the induction ring changes, then it is known that the bolt is loose, and the looseness of the conductive wiring harness is discovered in time.

[0018] The above multiple effects interact with each other. First, when the bolt is loose, the distance value sensed by the second infrared distance sensor to the induction ring changes, and then the center point of the slot column and the center point of the bolt are on the same horizontal line. Finally, the pressure block moves right to one side of the calibration block, and the pressure block moves right to one side of the calibration block for rotation calibration and locking. In summary, the looseness of the conductive wire harness and the looseness of the bolt can be discovered in time, and the bolt can be automatically locked in time, which greatly improves the self-maintenance effect of the conductive connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the low-voltage terminal lug connection structure of the distribution transformer of the present invention.

[0020] Figure 2 It is a schematic diagram of the partial structure of the connection between the push bar and the support ring of the present invention.

[0021] Figure 3 It is a schematic diagram of the local structure of the connection between the support ring and the reduction motor of the present invention.

[0022] Figure 4 It is a schematic diagram of the partial structure of the conductive docking and tightening assembly of the present invention from a front view.

[0023] Figure 5 It is a schematic diagram of the partial structure of the connection between the screw rod and the threaded sleeve block of the present invention.

[0024] Figure 6 It is a schematic diagram of the partial structure of the connection between the support frame and the support bar of the present invention.

[0025] Figure 7 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0026] Figure 8It is a bottom view structural schematic diagram of the low-voltage terminal lug connection structure of the distribution transformer of the present invention.

[0027] Fig. 9 It is a schematic diagram of a partial structure of a conductive terminal of the present invention when viewed from above.

[0028] The accompanying drawings are marked as follows: 1. Insulating mounting plate; 2. Conductive sheet; 3. Conductive terminal; 4. Bolt; 5. Turning cap; 6. Slot column; 7. Pressure block; 8. Reduction motor; 9. Support ring; 10. Dislocation distance sensor; 11. Positioning distance sensor; 12. Controller; 13. Mounting hole; 14. Push bar; 15. Socket block; 16. Guide rod; 17. Guide frame; 18. Linkage bar; 19. Micro electric cylinder; 20. Threaded sleeve block; 21. Screw; 22. Support frame; 23. Drive motor; 24. First infrared distance sensor; 25. Support bar; 26. Proofing turning block; 27. Induction ring; 28. Second infrared distance sensor; 29. ​​Socket seat; 30. Connection wire hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] As attached Figure 1 - Attachment Fig. 9 A distribution transformer low-voltage terminal lug connection structure is shown, and a conductive connection tightening component, a conductive docking tightening component, and a conductive looseness sensing component are arranged on the distribution transformer low-voltage terminal lug connection structure. The arrangement of each component can timely detect the looseness of the conductive wire harness and the looseness of the bolt 4, and can automatically tighten the bolt 4 in time, thereby greatly improving the self-maintenance effect of the conductive connection. The specific structural arrangement of each component is as follows.

[0031] In this technical solution, as shown in the attached Figure 1 - Attachment Figure 3 As shown, the top and bottom ends of the conductive sheet 2 are fixedly connected with a conductive terminal 3, the inner wall of the conductive terminal 3 is provided with a threaded bolt 4, one end of the bolt 4 is fixedly connected with a rotating cap 5, and one side of the rotating cap 5 is provided with a conductive connection tightening assembly; the conductive connection tightening assembly includes a slot column 6 arranged on one side of the rotating cap 5, and one side of the outer wall of the slot column 6 is fixedly connected with a pressure block 7.

[0032] A reduction motor 8 is installed at one end of the slot column 6, and the output end of the reduction motor 8 is fixedly connected to the slot column 6, and a support ring 9 is fixedly connected to the outer wall of the reduction motor 8; a misalignment distance sensor 10 is fixedly installed inside the pressure block 7, and a positioning distance sensor 11 is fixedly connected to the inner wall of the slot column 6; a conductive docking and tightening component is provided on the outer wall of the support ring 9; and a conductive looseness sensor component is provided on one end face of the rotating cap 5.

[0033] In this technical solution, as shown in the attached Figure 1 As shown, a controller 12 is fixedly mounted on one side of the insulating mounting plate 1, so that the driving motor 23 can be immediately started by the controller 12 to realize the driving operation of the driving motor 23. A plurality of mounting holes 13 are provided at the bottom end of the insulating mounting plate 1; the plurality of mounting holes 13 are arranged in a rectangular and equidistant manner, so that the insulating mounting plate 1 can be fixedly mounted at the installation position of the distribution transformer by inserting bolts into the mounting holes 13.

[0034] In this technical solution, as shown in the attached Figure 4 - Attachment Figure 7 As shown, the conductive docking tightening assembly includes a push bar 14 fixedly arranged on the outer wall of the support ring 9; the conductive docking tightening assembly also includes a sleeve block 15, a guide rod 16, a guide frame 17, a linkage bar 18 and a micro-electric cylinder 19. The sleeve block 15 is fixed to one end of the push bar 14, the guide rod 16 is slidably located on the inner wall of the sleeve block 15, the guide frame 17 is fixedly installed on one end of the guide rod 16, the linkage bar 18 is fixedly located on the upper surface of the push bar 14, and the micro-electric cylinder 19 is fixedly installed on the upper surface of the guide frame 17, and the output end of the micro-electric cylinder 19 is fixedly connected to the linkage bar 18; the conductive docking tightening assembly also includes a threaded sleeve block 20, a screw rod 21, a support frame 22, a drive motor 23, a first infrared distance sensor 24 and a support bar 25. The threaded sleeve block 20 is fixed on one side of the guide frame 17.

[0035] The screw 21 is threadedly connected to the inner wall of the threaded sleeve 20, the support frame 22 is slidably connected to the outer wall of the threaded sleeve 20, the drive motor 23 is fixedly installed at the top of the support frame 22, and the drive motor 23 is used to drive the screw 21 to rotate. The first infrared distance sensor 24 is located on one side of the screw 21; the support bar 25 is fixed on one side of the support frame 22, and the support bar 25 is fixedly installed between the insulating mounting plate 1. The screw 21 is rotatably connected to the support frame 22, and the outer wall of the threaded sleeve 20 and the inner wall of the support frame 22 are both smooth surfaces. The micro-electric cylinder 19 and the guide frame 17 are both slidably connected to the support frame 22, and the output end of the drive motor 23 is fixedly connected to the screw 21. The first infrared distance sensor 24 is fixedly connected to the support frame 22, and a gap is provided between the first infrared distance sensor 24 and the screw 21.

[0036] In this technical solution, as shown in the attached Figure 1 - Attachment Fig. 9As shown, the conductive looseness sensor assembly includes a calibration rotating block 26 fixedly arranged on one end surface of the rotating cap 5; an induction ring 27 is fixedly connected to the outer wall of the bolt 4, a second infrared distance sensor 28 is arranged on one side of the induction ring 27, a socket 29 is fixedly connected to the outer wall of the second infrared distance sensor 28, and the socket 29 is fixedly connected to the conductive terminal 3; each conductive terminal 3 is provided with a connecting wire hole 30. The vertical cross-section of the induction ring 27 is annular, and the socket 29 is used to support the second infrared distance sensor 28.

[0037] The working principle of the low voltage terminal lug connection structure of the distribution transformer of the present invention is as follows:

[0038] First, when the present invention is used for wiring, the bolt is inserted into the mounting hole 13 to fix the insulating mounting plate 1 at the mounting position of the distribution transformer. At the same time, the insulating mounting plate 1 supports the conductive sheet 2 to increase the stability of the conductive sheet 2, and the transformer low-voltage wiring harness is inserted into the connecting wire hole 30 inside the conductive terminal 3. The turning cap 5 is rotated by a wrench, and the turning cap 5 drives the bolt 4 to rotate. The bolt 4 and the conductive terminal 3 move rightward under the action of the thread transmission force. At the same time, the bolt 4 is squeezed on the transformer low-voltage wiring harness inside the conductive terminal 3, and the socket 29 is supported by the conductive terminal 3. The socket 29 supports the second infrared distance sensor 28, and the second infrared distance sensor 28 realizes distance sensing of the induction ring 27. When the distance value sensed by the second infrared distance sensor 28 is the same as the distance set by the controller 12, the bolt 4 is squeezed on the transformer low-voltage wiring harness inside the conductive terminal 3 according to the specified position to realize the locking operation.

[0039] At the same time, another transformer low-voltage wire harness is inserted into another conductive terminal 3, and another rotating cap 5 rotates, and another rotating cap 5 drives another bolt 4 to rotate, and another bolt 4 is squeezed on another transformer low-voltage wire harness, and another second infrared distance sensor 28 realizes distance sensing for another induction ring 27. When the sensed distance value is the same as the distance value set by the controller 12, the locking operation of the specified position of another transformer low-voltage wire harness is realized, and the low-voltage end of the transformer conducts electricity to another transformer low-voltage wire harness, and another transformer low-voltage wire harness conducts electricity to another conductive terminal 3, and another conductive terminal 3 conducts electricity to the conductive sheet 2, and conducts electricity to the conductive terminal 3 along the conductive sheet 2, so as to realize the conductive connection operation.

[0040] Secondly, when the present invention performs conductive looseness sensing, when the bolt 4 is loose, the second infrared distance sensor 28 will be supported by the socket 29. The distance value sensed by the second infrared distance sensor 28 to the induction ring 27 changes, and it is known that the bolt 4 is loose, so the drive motor 23 is immediately started through the controller 12.

[0041] Then, when the present invention performs conductive docking and tightening, the driving motor 23 drives the screw rod 21 to rotate, and the screw rod 21 drives the threaded sleeve block 20 to move downward under the action of the thread transmission force, and at the same time, the threaded sleeve block 20 drives the guide frame 17 to move downward, the guide frame 17 makes the guide rod 16 move downward, the guide rod 16 drives the sleeve block 15 to move downward, the sleeve block 15 makes the push bar 14 move downward, the push bar 14 drives the support ring 9 to move downward, the support ring 9 drives the reduction motor 8 to move downward, the reduction motor 8 drives the slot column 6 to move downward, the slot column 6 drives the pressure block 7 to move downward, and the pressure block 7 drives the misalignment distance sensor 10 to move downward. At the same time, the first infrared distance sensor 24 realizes distance sensing of the upper surface of the threaded sleeve block 20. When the distance value sensed by the first infrared distance sensor 24 is the same as the distance value set by the controller 12, the driving motor 23 is turned off by the controller 12. At this time, the center point of the slot column 6 and the center point of the bolt 4 are at the same horizontal line position.

[0042] Finally, when the present invention performs conductive connection calibration, the controller 12 is used to start the reduction motor 8 to rotate, the reduction motor 8 drives the slot column 6 to rotate, the slot column 6 drives the pressure block 7 to rotate, the pressure block 7 drives the misalignment distance sensor 10 to rotate, and the misalignment distance sensor 10 performs distance sensing on the rotary cap 5. When the distance value sensed by the misalignment distance sensor 10 is the same as the distance value set by the controller 12, the reduction motor 8 is turned off by the controller 12, so that the misalignment distance sensor 10 no longer senses the calibration rotary block 26, so that the pressure block 7 and the calibration rotary block 26 are misaligned, so that the calibration rotary block 26 will not block the pressure block 7 from moving right.

[0043] The linkage bar 18 is pushed to move rightward by the micro-electric cylinder 19, and the linkage bar 18 drives the push bar 14 to move rightward, and the push bar 14 drives the sleeve block 15 to move rightward, and the sleeve block 15 slides rightward along the outer wall of the guide rod 16, and the sleeve block 15 slides rightward along the inner wall of the guide frame 17, and the push bar 14 causes the support ring 9 to move rightward, and the support ring 9 drives the reduction motor 8 to move rightward, and the reduction motor 8 drives the slot column 6 to move rightward, and the slot column 6 causes the positioning distance sensor 11 to move rightward. At the same time, the slot column 6 drives the pressure block 7 to move rightward, and the distance sensing of the rotating cap 5 is realized by the positioning distance sensor 11. When the distance value sensed by the positioning distance sensor 11 is the same as the distance value set by the controller 12, the micro-electric cylinder 19 is closed by the controller 12, so that the pressure block 7 moves rightward and is located at one side of the calibration rotating block 26.

[0044] In this way, the reduction motor 8 drives the slot column 6 to rotate clockwise, the slot column 6 drives the pressure block 7 to rotate clockwise, the clockwise rotation of the pressure block 7 drives the calibration rotating block 26 to rotate clockwise, the bolt 4 and the conductive terminal head 3 are threadedly connected and rotated, so that the bolt 4 drives the induction ring 27 to move right, and the distance sensing of the induction ring 27 is realized by the second infrared distance sensor 28. When the distance value sensed by the second infrared distance sensor 28 is the same as the distance value set by the controller 12, the bolt 4 automatically tightens and restores the transformer low-voltage wiring harness inside the conductive terminal head 3 to prevent the bolt 4 from loosening. In this way, the conductive wire is immediately restored and locked after loosening.

[0045] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and 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.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-voltage terminal lug connection structure for a distribution transformer, comprising an insulating mounting plate (1), a conductive sheet (2) being fixedly connected to the top of the insulating mounting plate (1), a conductive terminal (3) being fixedly connected to the top and bottom of the conductive sheet (2), a threaded bolt (4) being provided on the inner wall of the conductive terminal (3), a rotating cap (5) being fixedly connected to one end of the bolt (4), and characterized in that: A conductive connection and tightening assembly is provided on one side of the rotating cap (5); The conductive connection calibration assembly comprises a slot column (6) arranged on one side of the rotating cap (5), a pressure block (7) is fixedly connected to one side of the outer wall of the slot column (6), a reduction motor (8) is installed at one end of the slot column (6), and the output end of the reduction motor (8) is fixedly connected to the slot column (6), and a support ring (9) is fixedly connected to the outer wall of the reduction motor (8); A misalignment distance sensor (10) is fixedly installed inside the pressing block (7), a positioning distance sensor (11) is fixedly connected to the inner wall of the slot column (6), the reduction motor (8) is used to drive the slot column (6) to rotate, and one end face of the misalignment distance sensor (10) and one end face of the positioning distance sensor (11) are in the same vertical plane; the outer wall of the support ring (9) is provided with a conductive docking and tightening component; one end face of the rotating cap (5) is provided with a conductive loosening sensor component, and the conductive loosening sensor component includes a calibration rotating block (26) fixedly arranged on one end face of the rotating cap (5); the outer wall of the bolt (4) is fixedly connected with an induction ring (27), and a second infrared distance sensor (28) is provided on one side of the induction ring (27); a socket (29) is fixedly connected to the outer wall of the second infrared distance sensor (28), and the socket (29) is fixedly connected to the conductive terminal (3); each conductive terminal (3) is provided with a connecting wire hole (30) inside.

2. The low voltage terminal lug connection structure of the distribution transformer according to claim 1, characterized in that: The two conductive terminals (3) are symmetrically arranged with respect to the conductive sheet (2), and the insulating mounting plate (1) is used to support the conductive sheet (2).

3. The low voltage terminal lug connection structure of the distribution transformer according to claim 1, characterized in that: A controller (12) is fixedly mounted on one side of the insulating mounting plate (1), and a plurality of mounting holes (13) are formed at the bottom end of the insulating mounting plate (1); The plurality of mounting holes (13) are arranged in a rectangular and equidistant manner.

4. The low voltage terminal lug connection structure of a distribution transformer according to claim 1, characterized in that: The conductive docking and tightening assembly comprises a push bar (14) fixedly arranged on the outer wall of the support ring (9); The conductive docking and tightening assembly further comprises a sleeve block (15), a guide rod (16), a guide frame (17), a linkage bar (18) and a micro electric cylinder (19); The sleeve block (15) is fixed to one end of the push bar (14), the guide rod (16) is slidably located on the inner wall of the sleeve block (15), the guide frame (17) is fixedly mounted on one end of the guide rod (16), the linkage bar (18) is fixedly located on the upper surface of the push bar (14), and the micro-electric cylinder (19) is fixedly mounted on the upper surface of the guide frame (17), and the output end of the micro-electric cylinder (19) is fixedly connected to the linkage bar (18); The conductive docking and tightening assembly further comprises a threaded sleeve (20), a screw rod (21), a support frame (22), a drive motor (23), a first infrared distance sensor (24), and a support bar (25); The threaded sleeve (20) is fixed on one side of the guide frame (17); the screw rod (21) is threadedly connected to the inner wall of the threaded sleeve (20); the support frame (22) is slidably connected to the outer wall of the threaded sleeve (20); the drive motor (23) is fixedly mounted on the top of the support frame (22); the drive motor (23) is used to drive the screw rod (21) to rotate; and the first infrared distance sensor (24) is located on one side of the screw rod (21); The support bar (25) is fixed to one side of the support frame (22), and the support bar (25) is fixedly mounted to the insulating mounting plate (1).

5. The low voltage terminal lug connection structure of the distribution transformer according to claim 4, characterized in that: The screw rod (21) is rotatably connected to the support frame (22), and the outer wall of the threaded sleeve block (20) and the inner wall of the support frame (22) are both smooth surfaces.

6. The low voltage terminal lug connection structure of distribution transformer according to claim 4, characterized in that: The micro electric cylinder (19) and the guide frame (17) are both slidably connected to the support frame (22), and the output end of the drive motor (23) is fixedly connected to the screw rod (21).

7. The low voltage terminal lug connection structure of a distribution transformer according to claim 4, characterized in that: The first infrared distance sensor (24) is fixedly connected to the support frame (22), and a gap is provided between the first infrared distance sensor (24) and the screw rod (21).

8. The low voltage terminal lug connection structure of a distribution transformer according to claim 1, characterized in that: The vertical cross-section of the induction ring (27) is in the shape of a circular ring, and the socket (29) is used to support the second infrared distance sensor (28).

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