Automatic test system for transformer

Abstract

The invention relates to the field of test systems, in particular to an automatic transformer test system which comprises a control cabinet, a manipulator, a first placing frame, a second placing frame, a plurality of high-voltage clamps and a plurality of low-voltage clamps, the first placing frame is used for placing the high-voltage clamps at intervals, and the second placing frame is used for placing the low-voltage clamps at intervals. The multiple high-voltage clamps and the multiple low-voltage clamps are electrically connected with the control cabinet, the mechanical arm can clamp the high-voltage clamps on the first placing frame to be installed on a high-voltage porcelain bottle on the transformer, and the mechanical arm can clamp the low-voltage clamps on the second placing frame to be installed on a low-voltage porcelain bottle on the transformer. Through arrangement of the first placing frame, the second placing frame, the high-voltage clamp and the low-voltage clamp, high-voltage detection of the transformer is realized, a worker does not need to move the transformer to detection equipment for multiple times for detection, the detection period of the transformer is shortened, the detection efficiency of the transformer is improved, and the detection cost of the transformer is reduced.

Description

Technical Field

[0001] This application relates to the field of testing systems, and in particular to an automated transformer testing system. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Transformers are widely used in power systems, mainly for voltage transformation and power transmission.

[0003] After the transformer is installed, it needs to be tested. The existing automated testing equipment is set up separately, requiring staff to move the transformer to the testing equipment multiple times for testing. This prolongs the testing cycle, reduces the testing efficiency, and thus increases the testing cost. Summary of the Invention

[0004] To improve the efficiency of transformer testing, this application provides an automated transformer testing system.

[0005] This application provides an automated testing system for transformers, which adopts the following technical solution: An automated transformer testing system includes a control cabinet, a robotic arm, a first placement rack, a second placement rack, multiple high-voltage clamps, and multiple low-voltage clamps. The first placement rack houses multiple high-voltage clamps spaced apart, and the second placement rack houses multiple low-voltage clamps spaced apart. All high-voltage and low-voltage clamps are electrically connected to the control cabinet. The robotic arm can grip the high-voltage clamps on the first placement rack and mount them onto high-voltage insulators on the transformer, and the robotic arm can grip the low-voltage clamps on the second placement rack and mount them onto low-voltage insulators on the transformer. The robotic arm includes a base, a rotating plate, a clamping cylinder, and a rotating part. One end of the rotating part is rotatably connected to the surface of the base, and the other end is rotatably connected to the surface of the rotating plate. The clamping cylinder is connected to... The clamping cylinder is attached to the surface of the rotating plate away from the rotating part and can clamp either a low-voltage clamp or a high-voltage clamp. The transformer tank cover is connected to a tap changer, and the voltage of the transformer is adjusted by changing the resistance of the tap changer. The rotating plate is connected to a voltage regulating assembly, which includes a voltage regulating motor, a connecting seat, and multiple clamping rods. The voltage regulating motor is connected to the surface of the rotating plate away from the rotating part, and the motor axis of the voltage regulating motor is parallel to the rotation axis of the rotating plate. The connecting seat is connected to the motor shaft of the voltage regulating motor. Multiple clamping rods are connected at intervals to the surface of the connecting seat away from the voltage regulating motor, and a clamping space is left between the multiple clamping rods for the tap changer shaft to be embedded. The outer wall of the tap changer shaft abuts against the surface of the clamping rod to form a limit.

[0006] By adopting the above technical solution, when the transformer installation is completed, the low-voltage clamps on the second robotic arm gripping rack correspond one-to-one with the low-voltage porcelain insulators installed on the transformer. Multiple low-voltage clamps are electrically connected to the control cabinet to achieve low-voltage testing of the transformer. Simultaneously, the high-voltage clamps on the first robotic arm gripping rack correspond one-to-one with the high-voltage porcelain insulators installed on the transformer. Multiple high-voltage clamps are electrically connected to the control cabinet to achieve high-voltage testing of the transformer. This eliminates the need for personnel to repeatedly move the transformer to the testing equipment for testing, shortening the transformer testing cycle, improving testing efficiency, and thus reducing testing costs. The base abuts against the ground to form support. The rotating part rotates on the base and drives the rotating plate closer to either the first or second robotic arm. The clamping cylinder clamps the high-voltage insulator on the first robotic arm. The pressure clamp or the low-voltage clamp on the second mounting frame enables precise clamping of both low-voltage and high-voltage clamps. The rotating part drives the rotating plate closer to the transformer on the roller conveyor line, causing the rotating plate to rotate on the rotating part, with the clamping space facing the tap changer on the transformer tank cover. The rotating part drives the rotating plate closer to the transformer tank cover, and the tap changer shaft is embedded in the clamping space. The outer circumference of the tap changer shaft abuts against the clamping rod surface to form a limit. When it is necessary to adjust the resistance value of the tap changer, the voltage regulating motor drives the connecting seat to rotate. One end of the clamping rod is connected to the surface of the connecting seat, and the other end of the clamping rod abuts against the outer wall of the tap changer shaft to form a limit, driving the tap changer shaft to rotate. This enables precise adjustment of the resistance values ​​of different tap changer positions, and completes the precise measurement of the switching capacity and resistance of each tap of the transformer.

[0007] Optionally, it also includes a roller conveyor line, the surface of which is provided for placing the transformer, and the roller conveyor line is located between the placement frame and the robot arm.

[0008] By adopting the above technical solution, the surface of the roller conveyor line is used to place the transformer. The roller conveyor line drives the transformer to move closer to the first placement rack. The robot arm holds the high voltage clamp on the first placement rack and installs it one by one on the high voltage porcelain insulator on the transformer. There is no need for the staff to push the transformer closer to the first placement rack, realizing automated feeding of the transformer, thereby further improving the testing efficiency of the transformer.

[0009] Optionally, the pressure regulating assembly further includes a slide cylinder and a clamping cylinder II. The slide cylinder is connected to the surface of the connecting seat, and the clamping cylinder II is connected to the drive end of the slide cylinder. The slide cylinder can drive the clamping cylinder II to approach the clamping space, and the clamping end of the clamping cylinder II can clamp the tap changer.

[0010] By adopting the above technical solution, before adjusting the tap changer position, the slide cylinder drives the clamping cylinder two to approach the tap changer lever, and the clamping end of the clamping cylinder two clamps the tap changer lever. The slide cylinder drives the clamping cylinder two to move away from the tap changer, and the clamping end of the clamping cylinder two drives the tap changer lever to rotate away from the tap changer resistor slot. The tap changer lever disengages from the tap changer resistor slot. The voltage regulating motor drives the connecting seat to rotate, which in turn drives the tap changer shaft to rotate, so that the tap changer lever faces the corresponding tap changer resistor slot. The slide cylinder drives the clamping cylinder two to approach the tap changer, and the clamping end of the clamping cylinder two clamps the tap changer lever and drives the tap changer lever to rotate towards the tap changer resistor slot. The tap changer lever is then embedded in the resistor slot, realizing automatic tap changer shifting, thereby improving the efficiency of automatic transformer detection.

[0011] Optionally, the voltage regulating assembly further includes an infrared sensor connected to the surface of the connector, with the detection end of the infrared sensor facing the tap changer. The infrared sensor can detect whether the tap changer is open.

[0012] By adopting the above technical solution, the infrared sensor is connected to the connector, and the detection end of the infrared sensor faces the tap changer. The infrared sensor can detect whether the tap changer is opened, thereby improving the accuracy of tap changer shifting.

[0013] Optionally, the rotating plate is connected to a correction assembly, which includes a camera connected to the end face of the rotating plate near the rotating part. The camera can photograph the transformer on the roller conveyor line, determine the position of the transformer, and perform correction.

[0014] By adopting the above technical solution, when the roller conveyor drives the transformer close to the placement frame, it drives the rotating plate to rotate in the rotating part. The camera end faces the transformer on the roller conveyor, and the camera end takes pictures of the transformer on the roller conveyor to determine the transformer position and make corrections. This allows the clamping cylinder to accurately install the high-voltage clamp and the low-voltage clamp one-to-one on the high-voltage porcelain insulator and the low-voltage porcelain insulator on the transformer, thereby improving the efficiency of automated transformer detection.

[0015] Optionally, the correction assembly also includes a ring light source connected to the surface of the rotating plate near the camera's shooting end, which can provide supplemental lighting for the transformer on the roller conveyor line.

[0016] By adopting the above technical solution, the ring light source provides supplementary lighting for the transformer on the roller conveyor line, enabling the camera to accurately photograph the transformer on the roller conveyor line, thereby improving the accuracy of the correction of the transformer on the roller conveyor line.

[0017] Optionally, the clamping cylinder includes a driving part and two clamping parts. The driving part is connected to the driving end of the slide cylinder, and the two clamping parts are slidably connected to the surface of the driving part facing the clamping space. When the two clamping parts approach each other, the two clamping parts clamp the two sides of the tap changer to form a limit.

[0018] By adopting the above technical solution, when the tap changer is located between the two clamping parts, the two clamping parts approach each other and clamp the two clamping parts on both sides of the tap changer to form a limit, thereby realizing the rapid fixation between the tap changer and the clamping cylinder.

[0019] Optionally, a locking assembly is connected between the two clamping portions, the locking assembly being able to limit the tap changer lever between the two clamping portions.

[0020] By adopting the above technical solution, the locking assembly is connected between the two clamping parts, and the locking assembly can limit the tap changer to be between the two clamping parts, making it difficult for the tap changer to disengage from the clamping cylinder two, thereby improving the firmness of the clamping cylinder two in clamping the tap changer.

[0021] In summary, this application includes at least one of the following beneficial technical effects: The placement rack 1, placement rack 2, high-voltage clamp and low-voltage clamp are set up to realize high-voltage testing of transformers, eliminating the need for staff to move the transformer to the testing equipment multiple times, shortening the transformer testing cycle, improving the transformer testing efficiency, and thus reducing the transformer testing cost. The installation of roller conveyor lines eliminates the need for staff to push transformers close to the placement rack, enabling automated loading of transformers and further improving transformer testing efficiency. The base, rotating plate, clamping cylinder one, and rotating part are configured so that clamping cylinder one can clamp the high-pressure clamp on the first placement frame or the low-pressure clamp on the second placement frame, thereby achieving precise clamping of the low-pressure clamp and the high-pressure clamp. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of this application.

[0023] Figure 2 This is a partial structural diagram of Embodiment 1 of this application, mainly showing the high-pressure fixture and the low-pressure fixture.

[0024] Figure 3 This is a partial structural diagram of the robotic arm in Embodiment 1 of this application, mainly showing the correction components.

[0025] Figure 4 This is a partial structural diagram of the robotic arm in Embodiment 1 of this application, mainly showing the voltage regulating component.

[0026] Figure 5 This is a cross-sectional view of the clamping cylinder 2 in Embodiment 2 of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Control cabinet; 2. Robotic arm; 21. Base; 22. Rotating plate; 23. Clamping cylinder one; 24. Rotating part; 3. Placement rack one; 4. Placement rack two; 5. Roller conveyor line; 6. High-voltage clamp; 7. Low-voltage clamp; 8. Tap changer; 81. Main body; 811. Resistor groove; 82. Rotating shaft; 83. Paddle; 9. Transformer; 10. Voltage regulating assembly; 101. Voltage regulating motor; 102. Connecting seat; 103. Clamping rod; 1031. Clamping space; 104. Slide table. 105. Cylinder; 1051. Clamping cylinder II; 1052. Drive unit; 1053. Clamping unit; 1054. Sliding cavity; 1055. Locking cavity; 1056. Locking groove; 107. Infrared sensor; 11. Correction assembly; 118. Camera; 119. Ring light source; 120. Locking assembly; 121. Connecting rod I; 122. Connecting rod II; 123. Slider; 124. Elastic element I; 125. Elastic element II; 126. Electromagnet; 127. Magnetic block; 128. Contact switch; 129. Locking rod. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses an automated testing system for transformers. Example 1

[0030] Reference Figure 1 and Figure 2 The transformer automated testing system includes a control cabinet 1, a robotic arm 2, a placement rack 1 3, a placement rack 2 4, a roller conveyor line 5, multiple high-voltage clamps 6 and multiple low-voltage clamps 7. The robotic arm 2 includes a base 21, a rotating plate 22, a clamping cylinder 1 23 and a rotating part 24. The bottom of the base 21 is fixed to the ground with bolts. One end of the rotating part 24 is rotatably connected to the top of the base 21, and the other end of the rotating part 24 is rotatably connected to the surface of the rotating plate 22. The clamping cylinder 1 23 is fixed to the surface of the rotating plate 22 opposite to the rotating part 24 with bolts. The clamping end of the clamping cylinder 1 23 can clamp the high-voltage clamp 6 or the low-voltage clamp 7, realizing the directional clamping of the high-voltage clamp 6 and the low-voltage clamp 7.

[0031] Reference Figure 1 and Figure 2The number of placement racks 3 can be one, two, or more. In this embodiment, there are two placement racks 3, located on both sides of the robot arm 2. The surface of the placement racks 3 is used to place multiple high-voltage clamps 6 at intervals. The number of placement racks 4 can be one, two, or more. In this embodiment, there are multiple placement racks 4, which are divided into two groups. The two groups of placement racks 4 are located on both sides of the robot arm 2. Each group of placement racks 4 is located between two placement racks 3. Multiple placement racks 4 in the same group are placed at intervals. The surface of the placement racks 4 is used to place multiple low-voltage clamps 7 at intervals. The bottom of the control cabinet 1 abuts against the ground to form a support. The control cabinet 1 is located on the side of one of the groups of placement racks 4 away from the robot arm 2. The multiple high-voltage clamps 6 and the multiple low-voltage clamps 7 are all electrically connected to the control cabinet 1.

[0032] Reference Figure 1 and Figure 2 The number of roller conveyor lines 5 can be one or two. In this embodiment, the number of roller conveyor lines 5 is two. The two roller conveyor lines 5 are located on both sides of the robot arm 2. The roller conveyor lines 5 correspond one-to-one with the placement frame 3. The roller conveyor lines 5 are located between the placement frame 3 and the robot arm 2. The surface of the roller conveyor lines 5 is used to place the transformer 9 and drive the transformer 9 through the robot arm 2.

[0033] Reference Figure 2 and Figure 3 The roller conveyor 5 has low-voltage and high-voltage testing stations spaced apart on its surface. The low-voltage testing station is located on the surface of the roller conveyor 5 near the second placement frame 4, and the high-voltage testing station is located on the surface of the roller conveyor 5 near the first placement frame 3. When the transformer 9 is placed on the surface of the roller conveyor 5 and moved to the low-voltage testing station, the rotating part 24 rotates, causing the rotating plate 22 to move closer to the second placement frame 4. The clamping cylinder 23 clamps the low-voltage fixture 7. The rotating part 24 continues to drive the rotating plate 22 closer to the low-voltage testing station, and the clamping cylinder 23 clamps the low-voltage fixture 7 and installs the low-voltage fixture 7 on the low-voltage porcelain insulator of the transformer 9. The control cabinet 1 performs low-voltage testing on the transformer 9 at the low-voltage testing station. When the low-voltage testing is completed... The roller conveyor 5 moves the transformer 9 to the high-voltage testing station. The rotating part 24 rotates, causing the rotating plate 22 to approach the placement frame 3. The clamping cylinder 23 clamps the high-voltage fixture 6 on the placement frame 3. The rotating part 24 continues to rotate, causing the rotating plate 22 to approach the high-voltage testing station. The clamping cylinder 105 clamps the high-voltage fixture 6 and installs it on the high-voltage porcelain insulator of the transformer 9. The control cabinet 1 performs high-voltage testing on the transformer 9 at the high-voltage testing station, realizing automated testing of the transformer 9. This eliminates the need for personnel to move the transformer 9 to the testing equipment multiple times, shortening the testing cycle of the transformer 9, improving the testing efficiency of the transformer 9, and thus reducing the testing cost of the transformer 9.

[0034] Reference Figure 2 and Figure 4 The transformer 9 tank cover is equipped with a tap changer 8. The tap changer 8 includes a main body 81, a rotating shaft 82, and a lever 83. The main body 81 is installed on the transformer 9 tank cover. The rotating shaft 82 is rotatably connected to the surface of the main body 81. The lever 83 is rotatably connected to the end face of the rotating shaft 82 that protrudes from the main body 81. The rotation axis of the lever 83 is perpendicular to the axis of the rotating shaft 82. Multiple resistance grooves 811 are spaced apart on the surface of the main body 81 facing the lever 83. The resistance grooves 811 are for the end of the lever 83 to be inserted, so as to realize the replacement of the resistance value of different positions of the tap changer 8.

[0035] Reference Figure 2 and Figure 4 The rotating plate 22 is equipped with a voltage regulating assembly 10, which can adjust the voltage of the transformer 9. The voltage regulating assembly 10 includes a voltage regulating motor 101, a connecting seat 102, a clamping rod 103, a slide cylinder 104, a clamping cylinder 105, and an infrared sensor 106. The voltage regulating motor 101 is fixed to the surface of the rotating plate 22 away from the rotating part 24 by bolts. The motor axis of the voltage regulating motor 101 is parallel to the rotation axis of the rotating plate 22. The connecting seat 102 is fixed by bolts. On the motor shaft of the voltage regulating motor 101, the ends of multiple clamping rods 103 are fixed at intervals on the surface of the connecting seat 102 away from the voltage regulating motor 101. The axis of the clamping rods 103 is parallel to the axis of the voltage regulating motor 101. A clamping space 1031 is left between the multiple clamping rods 103 for the tap changer 8 shaft 82 to be embedded. The outer peripheral surface of the tap changer 8 shaft 82 abuts against the surface of the clamping rods 103 to form a limit, and the axis of the tap changer 8 shaft 82 is parallel to the axis of the clamping rods 103.

[0036] Reference Figure 2 and Figure 4The slide cylinder 104 is fixed to the surface of the connecting seat 102 by bolts. The clamping cylinder 105 is fixed to the driving end of the slide cylinder 104 by bolts. The slide cylinder 104 drives the clamping cylinder 105 to approach the clamping rod 103, and the clamping end of the clamping cylinder 105 can clamp the tap changer 8 lever 83. The infrared sensor 106 is fixed to the surface of the connecting seat 102, and the detection end of the infrared sensor 106 faces the tap changer 8 lever 83. It can detect whether the tap changer 8's lever 83 is open; when it is necessary to adjust the voltage of the transformer 9, the rotating part 24 rotates, driving the rotating plate 22 to approach the tap changer 8. The tap changer 8's rotating shaft 82 is embedded in the clamping space 1031, and the clamping rod 103's rod surface presses against the outer circumference of the rotating shaft 82 to form a limit. The slide cylinder 104 drives the second clamping cylinder 105 to approach the tap changer 8's lever 83, and the second clamping cylinder 105 clamps the tap changer 8's lever 83. The clamping cylinder 105 is driven away from the tap changer 8 lever 83, causing the tap changer 8 lever 83 to rotate away from the resistor slot 811. The tap changer 8 lever 83 disengages from the resistor slot 811. Simultaneously, the adjusting motor drives the connecting seat 102 to rotate, which in turn drives the tap changer 8 shaft 82 to rotate, causing the tap changer lever 83 to move towards the corresponding resistor slot 811. The sliding cylinder 104 drives the clamping cylinder 105 to approach the tap changer 8, clamping the tap changer 8 lever 83 and causing it to rotate towards the resistor slot 811. The tap changer 8 lever 83 is then embedded in the resistor slot 811. At the same time, the infrared sensor 106 monitors in real time whether the tap changer 8 lever 83 has been pried open, improving the detection accuracy of the transformer 9 and realizing the automatic adjustment of different resistance levels of the tap changer 8. This allows for the automatic detection of the switching capacity and resistance value of each level of the transformer 9.

[0037] Reference Figure 2 and Figure 3 The rotating plate 22 is connected to a correction component 11, which can correct the position of the transformer 9 on the roller conveyor line 5. The correction component 11 includes a camera 111 and a ring light source 112. The camera 111 is fixed to the surface of the rotating plate 22 near the rotating part 24 by bolts. The ring light source 112 is fixed to the end face of the rotating plate 22 facing the shooting end of the camera 111 by bolts. The ring light source 112 can provide supplementary lighting for the transformer 9 on the roller conveyor line 5. When the roller conveyor line 5 drives the transformer 9 closer to the robot arm 2, the rotating part 24 rotates, driving the rotating plate 22 closer to the transformer 9. The rotating plate 22 rotates on the surface of the rotating part 24, the shooting end of the camera 111 faces the top of the transformer 9, and the ring light source 112 illuminates the transformer 9. The shooting end of the camera 111 shoots the transformer 9 on the roller conveyor line 5 to determine the position of the transformer 9 and perform correction, thereby improving the efficiency of automated detection of the transformer 9.

[0038] The implementation principle of the transformer automated testing system in Embodiment 1 of this application is as follows: An AGV loads a transformer 9 onto the surface of a roller conveyor 5. The roller conveyor 5 moves the transformer 9 to the low-voltage testing station. The rotating part 24 rotates, causing the rotating plate 22 to approach the placement frame 4. The clamping cylinder 23 clamps the low-voltage fixture 7. The rotating part 24 continues to move the rotating plate 22 closer to the low-voltage testing station, and the clamping cylinder 23 clamps the low-voltage fixture 7 and installs it on the low-voltage porcelain insulator of the transformer 9. The control cabinet 1 performs low-voltage testing on the transformer 9 at the low-voltage testing station. When the low-voltage testing is completed, the roller conveyor 5 moves the transformer 9 to the high-voltage testing station. At the high-voltage testing station, the rotating part 24 rotates, causing the rotating plate 22 to approach the placement frame 3. The clamping cylinder 23 clamps the high-voltage fixture 6 on the placement frame 3. The rotating part 24 continues to rotate, causing the rotating plate 22 to approach the high-voltage testing station. The clamping cylinder 105 clamps the high-voltage fixture 6 and installs it on the high-voltage porcelain insulator of the transformer 9. The control cabinet 1 performs high-voltage testing on the transformer 9 at the high-voltage testing station, realizing automated testing of the transformer 9. This eliminates the need for personnel to move the transformer 9 to the testing equipment multiple times, shortening the testing cycle of the transformer 9, improving the testing efficiency of the transformer 9, and thus reducing the testing cost of the transformer 9. Example 2

[0039] Reference Figure 4 and Figure 5The difference between Embodiment 2 and Embodiment 1 is that the clamping cylinder 105 includes a driving part 1051 and two clamping parts 1052. The driving part 1051 is connected to the driving end of the slide cylinder 104. The two clamping parts 1052 are slidably connected to the surface of the driving part 1051 facing the clamping space 1031. When the two clamping parts 1052 approach each other, they clamp the two sides of the tap changer 8 lever 83 to form a limit. A locking assembly 12 is installed between the two clamping parts 1052. The locking assembly 12 can limit the tap changer 8 lever 83 between the two clamping parts 1052. The locking assembly 12 includes a connecting rod 121, a connecting rod 122, a slider 123, an elastic element 124, an elastic element 125, an electromagnet 126, a magnetic block 127, a contact switch 128, and a locking rod 129. One of the clamping parts 1052 faces the surface of the other clamping part 1052. A sliding cavity 1053 is provided for the slider 123 to slide. The sliding direction of the slider 123 is parallel to the sliding direction of the clamping cylinder 105. One end of the connecting rod 121 is rotatably connected to the inner wall of the sliding cavity 1053, and the other end of the connecting rod 121 is rotatably connected to the end of the connecting rod 122. The other end of the connecting rod 122 is rotatably connected to the surface of the slider 123. The elastic element 124 and the elastic element 125 can be compression springs or tension springs. In this embodiment, the elastic element 124 and the elastic element 125 are both compression springs with a certain deformation capability. One end of the elastic element 124 in the elastic force direction is connected to the inner wall of the sliding cavity 1053, and the other end of the elastic element 124 in the elastic force direction is connected to the surface of the slider 123. The elastic element 124 has the elastic force to drive the slider 123 to slide closer to the connecting rod 122, and the rotating ends of the connecting rod 121 and the connecting rod 122 tend to protrude from the surface of the clamping part 1052.

[0040] Reference Figure 4 and Figure 5 The inner wall of the sliding cavity 1053 is provided with a locking cavity 1054 for the locking rod 129 to slide. The sliding direction of the locking rod 129 is perpendicular to the sliding direction of the slider 123. One end of the elastic element 125 in the elastic direction is connected to the inner wall of the locking cavity 1054, and the other end of the elastic element 125 in the elastic direction is connected to the rod surface of the locking rod 129. The elastic element 125 has the elasticity to drive the locking rod 129 to slide towards the locking cavity 1054. The end face of the locking rod 129 flush with the inner wall of the sliding cavity 1053 abuts against the end face of the slider 123 to form a limiting tendency.

[0041] Reference Figure 4 and Figure 5Electromagnet 126 is connected to the end face of locking rod 129 facing slider 123. A locking groove 1055 is provided on the end face of clamping part 1052 facing locking cavity 1054 for the end of locking rod 129 to be inserted. Magnetic block 127 is embedded in locking groove 1055 facing the inner wall of locking cavity 1054. The magnetic force of electromagnet 126 is greater than the elastic force of elastic element 125. Contact switch 128 is connected to the inner wall of sliding cavity 1053 near elastic element 124. The contact switch 128 is electrically connected to the electromagnet 126. When the tap switch 8 lever 83 is inserted between the two clamping parts 1052, the two clamping parts 1052 slide towards each other, and the surfaces of the two clamping parts 1052 clamp the two sides of the tap switch 8 lever 83 to form a limit. At the same time, the surface of the tap switch 8 lever 83 abuts against the rotating ends of the first connecting rod 121 and the second connecting rod 122 and drives the first connecting rod 121 and the second connecting rod 122 to move away from each other. The sliding motion of the slider 123 along the inner wall of the sliding cavity 1053 moves it closer to the contact switch 128. The contact switch 128 abuts against the slider 123 and conducts, energizing the electromagnet 126 and making it magnetic. At the same time, the abutment effect of the slider 123 on the locking rod 129 disappears, and the opposite poles of the electromagnet 126 and the magnetic block 127 attract each other. The locking rod 129 overcomes the elastic force of the elastic element 125 and slides closer to the locking groove 1055, locking... The end of the clamping rod 129 is embedded in the locking groove 1055, and the rod surface of the clamping rod 129 abuts against the inner wall of the locking groove 1055 to form a limit. The clamping rod 129, the driving part 1051 and the two clamping parts 1052 surround the outer periphery of the tap changer 8 lever 83, so that the tap changer 8 lever 83 is not easy to disengage from the two clamping parts 1052 when it rotates, thereby improving the stability of the clamping cylinder clamping the tap changer 8 lever 83 and driving the tap changer 8 lever 83 to rotate.

[0042] The implementation principle of the transformer automated testing system in Embodiment 2 of this application is as follows: When the tap changer 8 lever 83 is embedded between the two clamping parts 1052, the two clamping parts 1052 slide towards each other, and the surfaces of the two clamping parts 1052 clamp the two sides of the tap changer 8 lever 83 to form a limit. At the same time, the surface of the tap changer 8 lever 83 abuts against the rotating ends of the first connecting rod 121 and the second connecting rod 122 and drives the first connecting rod 121 and the second connecting rod 122 to slide away from each other. This causes the slider 123 to slide along the inner wall of the sliding cavity 1053 towards the contact switch 128. The contact switch 128 abuts against the slider 123 and conducts, energizing the electromagnet 126. The device is magnetic, and the contact effect of the slider 123 with the locking rod 129 disappears. The electromagnet 126 and the magnetic block 127 attract each other with opposite poles. The locking rod 129 overcomes the elastic force of the elastic element 125 and slides towards the locking groove 1055. The end of the locking rod 129 is embedded in the locking groove 1055. The rod surface of the locking rod 129 abuts against the inner wall of the locking groove 1055 to form a limit. The locking rod 129, the driving part 1051 and the two clamping parts 1052 surround the outer periphery of the tap changer 8 lever 83, so that the tap changer 8 lever 83 is not easy to disengage from the two clamping parts 1052 when it rotates, thereby improving the stability of the clamping cylinder clamping the tap changer 8 lever 83 and driving the tap changer 8 lever 83 to rotate.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. Transformer automated test system, characterized by: The invention comprises a control cabinet (1), a manipulator (2), a placement rack 1 (3), a placement rack 2 (4), a plurality of high-voltage clamps (6) and a plurality of low-voltage clamps (7), wherein the placement rack 1 (3) is used to place the plurality of high-voltage clamps (6) at intervals, the placement rack 2 (4) is used to place the plurality of low-voltage clamps (7) at intervals, the plurality of high-voltage clamps (6) and the plurality of low-voltage clamps (7) are electrically connected to the control cabinet (1), and the manipulator (2) can clamp the high-voltage clamps (6) on the placement rack 1 (3) and install them on the high-voltage porcelain bottle on the transformer (9). , and the manipulator (2) can clamp the low-voltage fixture (7) on the placement rack (4) and install it on the low-voltage porcelain bottle on the transformer (9); the manipulator (2) includes a base (21), a rotating plate (22), a clamping cylinder (23) and a rotating part (24), one end of the rotating part (24) is rotatably connected to the surface of the base (21), the other end of the rotating part (24) is rotatably connected to the plate surface of the rotating plate (22), the clamping cylinder (23) is connected to the surface of the rotating plate (22) away from the rotating part (24), The clamping cylinder (23) can clamp a low-voltage clamp (7) or a high-voltage clamp (6); the transformer (9) cover is connected to a tap switch (8), and the voltage of the transformer (9) is adjusted by changing the resistance value of the tap switch (8); the rotating plate (22) is connected to a voltage regulating assembly (10), and the voltage regulating assembly (10) includes a voltage regulating motor (101), a connecting seat (102) and a plurality of clamping rods (103); the voltage regulating motor (101) is connected to a surface of the rotating plate (22) away from the rotating part (24); and the voltage regulating motor (101) is connected to a surface of the rotating plate (22) away from the rotating part (24). The motor axis of the pressure motor (101) and the rotation axis of the rotating plate (22) are parallel to each other, the connecting seat (102) is connected to the motor shaft of the pressure regulating motor (101), a plurality of clamping rods (103) are connected at intervals to the surface of the connecting seat (102) away from the pressure regulating motor (101), and a clamping space (1031) for embedding the rotating shaft (82) of the tap changer (8) is reserved between the plurality of clamping rods (103), and the outer wall of the rotating shaft (82) of the tap changer (8) is pressed against the rod surface of the clamping rod (103) to form a limit.

2. The transformer automation test system according to claim 1 is characterized in that: It also includes a roller conveyor line (5), the surface of which is used to place the transformer (9), and the roller conveyor line (5) is located between the placement rack (3) and the robot (2).

3. The transformer automation test system according to claim 1 is characterized in that: The pressure regulating assembly (10) further comprises a slide cylinder (104) and a clamping cylinder (105); the slide cylinder (104) is connected to the surface of the connecting seat (102); the clamping cylinder (105) is connected to the driving end of the slide cylinder (104); the slide cylinder (104) can drive the clamping cylinder (105) to approach the clamping space (1031); and the clamping end of the clamping cylinder (105) can clamp the paddle (83) of the tap changer (8).

4. The transformer automation test system according to claim 1 is characterized in that: The voltage regulating assembly (10) further comprises an infrared sensor (106), wherein the infrared sensor (106) is connected to the surface of the connection seat (102), the detection end of the infrared sensor (106) faces the paddle (83) of the tap switch (8), and the infrared sensor (106) can detect whether the paddle (83) of the tap switch (8) is opened.

5. The transformer automation test system according to claim 1 is characterized in that: The rotating plate (22) is connected to a correction component (11), and the correction component (11) includes a camera (111). The camera (111) is connected to the end surface of the rotating plate (22) close to the rotating part (24). The camera (111) can photograph the transformer (9) on the roller conveyor line (5), determine the position of the transformer (9), and perform correction.

6. The transformer automation test system according to claim 5, characterized in that: The correction component (11) further comprises an annular light source (112), wherein the annular light source (112) is connected to a surface of the rotating plate (22) close to a shooting end of the camera (111), and the annular light source (112) can provide supplementary light for the transformer (9) on the roller conveyor line (5).

7. The transformer automation test system according to claim 3 is characterized in that: The clamping cylinder (105) comprises a driving part (1051) and two clamping parts (1052); the driving part (1051) is connected to the driving end of the slide cylinder (104); the two clamping parts (1052) are slidably connected to the surface of the driving part (1051) facing the clamping space (1031); when the two clamping parts (1052) are close to each other, the two clamping parts (1052) clamp the two sides of the paddle (83) of the tap changer (8) to form a limit.

8. The transformer automation test system according to claim 7, characterized in that: A locking assembly (12) is connected between the two clamping portions (1052), and the locking assembly (12) can limit the paddle (83) of the tap changer (8) between the two clamping portions (1052).

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