Transformer Automatic Test System

Abstract

This application relates to the field of test systems, in particular to an automatic test system for transformers, which includes a control cabinet, a manipulator, a first placement rack, a second placement rack, a plurality of high-voltage clamps and a plurality of low-voltage clamps. The first placement rack is for the spaced placement of a plurality of high-voltage clamps, and the second placement rack is for the spaced placement of a plurality of low-voltage clamps. A plurality of the high-voltage clamps and a plurality of the low-voltage clamps are all electrically connected to the control cabinet. The manipulator can hold the high-voltage clamps on the first placement rack and install them on the high-voltage porcelain insulators of the transformer, and the manipulator can hold the low-voltage clamps on the second placement rack and install them on the low-voltage porcelain insulators of the transformer. In this application, the settings of the first placement rack, the second placement rack, the high-voltage clamps and the low-voltage clamps realize the high-voltage detection of the transformer, without the need for staff to move the transformer to the detection equipment for detection multiple times, shortening the detection cycle of the transformer, improving the detection efficiency of the transformer, and thus reducing the detection cost of the transformer.

Description

Technical Field

[0001] The present application relates to the field of testing systems, and in particular to a transformer automated test system. Background Art

[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 conversion and power transmission.

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

[0004] In order to improve the detection efficiency of transformers, the present application provides a transformer automated test system.

[0005] The present application provides a transformer automation test system, which adopts the following technical solutions:

[0006] A transformer automation test system includes a control cabinet, a manipulator, a placement rack 1, a placement rack 2, a plurality of high-voltage fixtures and a plurality of low-voltage fixtures, wherein the placement rack 1 is for placing a plurality of high-voltage fixtures at intervals, and the placement rack 2 is for placing a plurality of low-voltage fixtures at intervals, and the plurality of high-voltage fixtures and the plurality of low-voltage fixtures are electrically connected to the control cabinet, the manipulator can clamp the high-voltage fixture on the placement rack 1 and install it on the high-voltage porcelain bottle on the transformer, and the manipulator can clamp the low-voltage fixture on the placement rack 2 and install it on the low-voltage porcelain bottle on the transformer; the manipulator includes a base, a rotating plate, a clamping cylinder 1 and a rotating part, one end of the rotating part is rotatably connected to the surface of the base, the other end of the rotating part is rotatably connected to the surface of the rotating plate, and the clamping cylinder 1 is connected to the rotating plate surface. Connected to the surface of the rotating plate away from the rotating part, the clamping cylinder can clamp a low-voltage clamp or a high-voltage clamp; the transformer box cover is connected to a tap switch, and the voltage of the transformer is adjusted by changing the resistance of the tap switch. The rotating plate is connected to a voltage regulating assembly, and the voltage regulating assembly includes a voltage regulating motor, a connecting seat and a plurality of clamping rods. The voltage regulating motor is connected to the surface of the rotating plate away from the rotating part, the motor axis of the voltage regulating motor and the rotating axis of the rotating plate are parallel to each other, the connecting seat is connected to the motor shaft of the voltage regulating motor, and the plurality of clamping rods are connected at intervals to the surface of the connecting seat away from the voltage regulating motor, and a clamping space for the tap switch shaft to be embedded is reserved between the plurality of clamping rods, and the outer wall of the tap switch shaft is pressed against the rod surface of the clamping rod to form a limit.

[0007] By adopting the above technical solution, when the transformer is installed, the manipulator clamps the low-voltage clamps on the placement rack two and installs them on the low-voltage porcelain insulators on the transformer one by one. Multiple low-voltage clamps are electrically connected to the control cabinet to realize the low-voltage detection of the transformer. At the same time, the manipulator clamps the high-voltage clamps on the placement rack one and installs them on the high-voltage porcelain insulators on the transformer one by one. Multiple high-voltage clamps are electrically connected to the control cabinet to realize the high-voltage detection of the transformer, eliminating the need for staff to move the transformer to the detection equipment multiple times for detection, shortening the detection cycle of the transformer, improving the detection efficiency of the transformer, and thus reducing the detection cost of the transformer. The bottom of the base abuts against the ground to form a support. The rotating part rotates on the base and drives the rotating plate to approach the placement rack one or the placement rack two. The clamping cylinder one clamps the high-voltage clamps on the placement rack one or the low-voltage clamps on the placement rack two to realize the precise clamping of the low-voltage clamps and the high-voltage clamps. The rotating part drives the rotating plate to approach the transformer on the roller conveyor line, and drives the rotating plate to rotate on the rotating part. The clamping space faces the tap changer on the transformer tank cover. The rotating part drives the rotating plate to approach the transformer tank cover, and the tap changer rotating shaft is embedded in the clamping space. The outer peripheral surface of the tap changer rotating shaft abuts against the rod surface of the clamping rod 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 rotating shaft to form a limit, driving the tap changer rotating shaft to rotate, realizing the precise adjustment of different resistance values of different gears of the tap changer, and completing the precise measurement of the on-off ability and resistance value of each gear of the transformer.

[0008] Optionally, it further includes a roller conveyor line. The surface of the roller conveyor line is for placing the transformer, and the roller conveyor line is located between the placement rack one and the manipulator.

[0009] By adopting the above technical solution, the surface of the roller conveyor line is for placing the transformer. The roller conveyor line drives the transformer to approach the placement rack one. The manipulator clamps the high-voltage clamps on the placement rack one and installs them on the high-voltage porcelain insulators on the transformer one by one, eliminating the need for staff to push the transformer to approach the placement rack one, realizing the automatic loading of the transformer, and thus further improving the detection efficiency of the transformer.

[0010] Optionally, the voltage regulating assembly further includes a slide table cylinder and a clamping cylinder two. The slide table cylinder is connected to the surface of the connecting seat, and the clamping cylinder two is connected to the driving end of the slide table cylinder. The slide table cylinder can drive the clamping cylinder two to approach the clamping space, and the clamping end of the clamping cylinder two can clamp the tap changer dial.

[0011] By adopting the above technical scheme, when it is necessary to adjust the gear position of the tap changer, the slide cylinder drives the clamping cylinder 2 to approach the tap changer paddle, the clamping end of the clamping cylinder 2 clamps the tap changer paddle, the slide cylinder drives the clamping cylinder 2 to move away from the tap changer, the clamping end of the clamping cylinder 2 drives the tap changer paddle to rotate in a direction away from the tap changer resistor slot, the tap changer paddle is separated from the tap changer resistor slot, the voltage regulating motor drives the connecting seat to rotate, drives the tap changer shaft to rotate, makes the tap changer paddle face the corresponding tap changer resistor slot, the slide cylinder drives the clamping cylinder 2 to approach the tap changer, the clamping end of the clamping cylinder 2 clamps the tap changer paddle and drives the tap changer paddle to rotate in a direction close to the tap changer resistor slot, the tap changer paddle is embedded in the resistor slot, and the automatic gear shifting of the tap changer is realized, thereby improving the efficiency of automatic detection of the transformer.

[0012] Optionally, the voltage regulating assembly further includes an infrared sensor, which is connected to the surface of the connecting seat, with the detection end of the infrared sensor facing the tap switch paddle, and the infrared sensor can detect whether the tap switch paddle is opened.

[0013] By adopting the above technical solution, the infrared sensor is connected to the connecting seat, and the detection end of the infrared sensor is facing the tap switch paddle. The infrared sensor can detect whether the tap switch paddle is opened, thereby improving the accuracy of the tap switch shifting.

[0014] Optionally, the rotating plate is connected to a correction component, which includes a camera. The camera is connected to the end surface of the rotating plate close to the rotating part. The camera can photograph the transformer on the roller conveyor line, determine the position of the transformer and perform correction.

[0015] By adopting the above technical solution, when the roller conveyor line drives the transformer close to the placement rack, the rotating plate is driven to rotate on the rotating part, and the camera end faces the transformer on the roller conveyor line. The camera end photographs the transformer on the roller conveyor line to determine the position of the transformer and correct it, so that the clamping cylinder can accurately install the high-voltage clamp and the low-voltage clamp on the high-voltage porcelain bottle and the low-voltage porcelain bottle on the transformer one by one, thereby improving the efficiency of automated detection of the transformer.

[0016] Optionally, the correction component also includes an annular light source, which is connected to the surface of the rotating plate close to the camera shooting end, and the annular light source can provide supplementary light for the transformer on the roller conveyor line.

[0017] By adopting the above technical solution, the annular light source is used to fill in the light for the transformer on the roller conveyor line, so that the camera can accurately photograph the transformer on the roller conveyor line, thereby improving the precise correction of the transformer on the roller conveyor line.

[0018] Optionally, the clamping cylinder 2 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, and when the two clamping parts are close to each other, the two clamping parts clamp both sides of the tap switch paddle to form a limit.

[0019] By adopting the above technical solution, when the tap switch paddle is located between the two clamping parts, the two clamping parts approach each other, and the two clamping parts clamp both sides of the tap switch paddle to form a limit, thereby achieving rapid fixation between the tap switch paddle and the clamping cylinder.

[0020] Optionally, a locking assembly is connected between the two clamping parts, and the locking assembly can limit the tap switch paddle between the two clamping parts.

[0021] By adopting the above technical solution, the locking assembly is connected between the two clamping parts, and the locking assembly can limit the tap switch paddle between the two clamping parts, so that the tap switch paddle is not easy to separate from the clamping cylinder two, thereby improving the firmness of the clamping cylinder two to clamp the tap switch paddle.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] The placement rack 1, the placement rack 2, the high-voltage fixture and the low-voltage fixture are set up to realize the high-voltage detection of the transformer. The staff does not need to move the transformer to the detection equipment for multiple times for detection, which shortens the detection cycle of the transformer, improves the detection efficiency of the transformer, and thus reduces the detection cost of the transformer;

[0024] The setting of the roller conveyor line eliminates the need for workers to push the transformer close to the placement rack, thus realizing automatic loading of the transformer and further improving the efficiency of transformer inspection;

[0025] The base, the rotating plate, the clamping cylinder 1 and the rotating part are arranged, and the clamping cylinder 1 clamps the high-pressure clamp on the placement rack 1 or the low-pressure clamp on the placement rack 2 to achieve precise clamping of the low-pressure clamp and the high-pressure clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure in Example 1 of the present application.

[0027] Figure 2 It is a schematic diagram of the local structure in Example 1 of the present application, mainly showing the high-voltage clamp and the low-voltage clamp.

[0028] Figure 3 It is a schematic diagram of the partial structure of the manipulator in Example 1 of the present application, mainly showing the correction components.

[0029] Figure 4It is a schematic diagram of the partial structure of the manipulator in Embodiment 1 of the present application, mainly showing the voltage regulating component.

[0030] Figure 5 It is a sectional view of the clamping cylinder II in Embodiment 2 of the present application.

[0031] Explanation of reference numerals: 1, control cabinet; 2, manipulator; 21, base; 22, rotating plate; 23, clamping cylinder I; 24, rotating part; 3, placing rack I; 4, placing rack II; 5, roller conveyor line; 6, high-voltage fixture; 7, low-voltage fixture; 8, tap changer; 81, main body; 811, resistance groove; 82, rotating shaft; 83, dial; 9, transformer; 10, voltage regulating component; 101, voltage regulating motor; 102, connecting seat; 103, clamping rod; 1031, clamping space; 104, slide cylinder; 105, clamping cylinder II; 1051, driving part; 1052, clamping part; 1053, sliding cavity; 1054, locking cavity; 1055, locking groove; 106, infrared sensor; 11, correction component; 111, camera; 112, annular light source; 12, locking component; 121, connecting rod I; 122, connecting rod II; 123, slider; 124, elastic member I; 125, elastic member II; 126, electromagnet; 127, magnetic block; 128, contact switch; 129, locking rod. Detailed implementation manners

[0032] The following will Figures 1-5 further describe the present application in detail.

[0033] The embodiment of the present application discloses a transformer automatic test system. Embodiment 1

[0034] Referring to Figure 1 and Figure 2 The transformer automatic test system includes a control cabinet 1, a manipulator 2, a placing rack I 3, a placing rack II 4, a roller conveyor line 5, a plurality of high-voltage fixtures 6 and a plurality of low-voltage fixtures 7. The manipulator 2 includes a base 21, a rotating plate 22, a clamping cylinder I 23 and a rotating part 24. The bottom of the base 21 is fixed to the ground by 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 plate surface of the rotating plate 22. The clamping cylinder I 23 is fixed to the plate surface of the rotating plate 22 facing away from the rotating part 24 by bolts. The clamping end of the clamping cylinder I 23 can clamp the high-voltage fixture 6 or the low-voltage fixture 7 to realize the directional clamping of the high-voltage fixture 6 and the low-voltage fixture 7.

[0035] Referring to Figure 1 and Figure 2, the number of the first placement rack 3 can be one, two or more. In the embodiment of the present application, the number of the first placement racks 3 is two. The two first placement racks 3 are located on both sides of the manipulator 2. The surface of the first placement rack 3 is for multiple high-voltage clamps 6 to be placed at intervals. The number of the second placement racks 4 can be one, two or more. In the embodiment of the present application, the number of the second placement racks 4 is multiple. The multiple second placement racks 4 are divided into two groups. The two groups of second placement racks 4 are located on both sides of the manipulator 2. Each group of second placement racks 4 is located between the two first placement racks 3. The multiple second placement racks 4 in the same group are placed at intervals. The surface of the second placement rack 4 is for multiple low-voltage clamps 7 to be placed at intervals. The bottom of the control cabinet 1 abuts against the ground to form a support. The control cabinet 1 is located on one side of one group of second placement racks 4 away from the manipulator 2. The multiple high-voltage clamps 6 and the multiple low-voltage clamps 7 are both electrically connected to the control cabinet 1.

[0036] Refer to Figure 1 and Figure 2 , the number of the roller conveyor lines 5 can be one or two. In the embodiment of the present application, the number of the roller conveyor lines 5 is two. The two roller conveyor lines 5 are located on both sides of the manipulator 2. The roller conveyor lines 5 correspond to the first placement racks 3 one by one. The roller conveyor lines 5 are located between the first placement racks 3 and the manipulator 2. The surface of the roller conveyor lines 5 is for the transformers 9 to be placed and drive the transformers 9 to pass by the manipulator 2.

[0037] Refer to Figure 2 and Figure 3 , the surface of the roller conveyor line 5 is provided with a low-voltage detection station and a high-voltage detection station at intervals. The low-voltage detection station is located on the surface of the roller conveyor line 5 close to the second placement rack 4, and the high-voltage detection station is located on the surface of the roller conveyor line 5 close to the first placement rack 3; when the transformer 9 is placed on the surface of the roller conveyor line 5 and moves to the low-voltage detection station, the rotating part 24 rotates to drive the rotating plate 22 to approach the second placement rack 4, and the clamping end of the clamping cylinder 23 clamps the low-voltage clamp 7. The rotating part 24 continues to drive the rotating plate 22 to approach the low-voltage detection station, and the clamping end of the clamping cylinder 23 clamps the low-voltage clamp 7 and installs the low-voltage clamp 7 on the low-voltage porcelain bottle of the transformer 9. The control cabinet 1 performs low-voltage detection on the transformer 9 at the low-voltage detection station; when the low-voltage detection is completed, the roller conveyor line 5 drives the transformer 9 to move to the high-voltage detection station, the rotating part 24 rotates to drive the rotating plate 22 to approach the first placement rack 3, the clamping cylinder 23 clamps the high-voltage clamp 6 on the first placement rack 3, the rotating part 24 continues to rotate to drive the rotating plate 22 to approach the high-voltage detection station, and the clamping end of the clamping cylinder 105 clamps the high-voltage clamp 6 and installs the high-voltage clamp 6 on the high-voltage porcelain bottle of the transformer 9. The control cabinet 1 performs high-voltage detection on the transformer 9 at the high-voltage detection station, realizing the automatic test of the transformer 9. There is no need for staff to move the transformer 9 to the detection equipment for detection multiple times, shortening the detection cycle of the transformer 9, improving the detection efficiency of the transformer 9, and thus reducing the detection cost of the transformer 9.

[0038] Refer toFigure 2 and Figure 4 The transformer 9 is provided with a tap changer 8 on its cover. The tap changer 8 comprises a main body 81, a rotating shaft 82 and a paddle 83. The main body 81 is provided on the transformer 9 cover. The rotating shaft 82 is rotatably connected to the surface of the main body 81. The paddle 83 is rotatably connected to the end surface of the rotating shaft 82 protruding from the main body 81. The rotation axis of the paddle 83 and the axis of the rotating shaft 82 are perpendicular to each other. A plurality of resistance grooves 811 are provided at intervals on the surface of the main body 81 facing the paddle 83. The resistance grooves 811 are provided for the ends of the paddle 83 to be embedded in, so as to realize the replacement of the resistance values ​​of different gears of the tap changer 8.

[0039] 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 and the rotating axis of the rotating plate 22 are parallel to each other. The connecting seat 102 is fixed by bolts. On the motor shaft of the voltage-regulating motor 101, the ends of a plurality of clamping rods 103 are fixed at intervals on the surface of the connecting seat 102 away from the voltage-regulating motor 101, the axes of the clamping rods 103 and the axes of the voltage-regulating motor 101 are parallel to each other, and a clamping space 1031 for the rotating shaft 82 of the tap changer 8 to be embedded is reserved between the plurality of clamping rods 103, the outer peripheral surface 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, and the axes of the rotating shaft 82 of the tap changer 8 and the axes of the clamping rod 103 are parallel to each other.

[0040] Reference Figure 2 and Figure 4, the sliding table cylinder 104 is fixed on the surface of the connecting seat 102 by bolts, the clamping cylinder II 105 is fixed on the driving end of the sliding table cylinder 104 by bolts. The sliding table cylinder 104 drives the clamping cylinder II 105 to approach the clamping rod 103, and the clamping end of the clamping cylinder II 105 can clamp the dial 83 of the tap-changer 8. The infrared sensor 106 is fixed on the surface of the connecting seat 102, and the detection end of the infrared sensor 106 faces the dial 83 of the tap-changer 8. The infrared sensor 106 can detect whether the dial 83 of the tap-changer 8 is turned on; when it is necessary to adjust the voltage of the transformer 9, the rotating part 24 rotates to drive the rotating plate 22 to approach the tap-changer 8. The rotating shaft 82 of the tap-changer 8 is embedded in the clamping space 1031, and the rod surface of the clamping rod 103 abuts against the outer peripheral surface of the rotating shaft 82 to form a limit. The sliding table cylinder 104 drives the clamping cylinder II 105 to approach the dial 83 of the tap-changer 8, the clamping cylinder II 105 clamps the dial 83 of the tap-changer 8, the sliding table cylinder 104 drives the clamping cylinder II 105 to move away from the dial 83 of the tap-changer 8, and the clamping cylinder II 105 drives the dial 83 of the tap-changer 8 to rotate in a direction away from the resistance slot 811. The dial 83 of the tap-changer 8 disengages from the resistance slot 811. At the same time, the adjusting motor drives the connecting seat 102 to rotate, drives the rotating shaft 82 of the tap-changer 8 to rotate, and drives the tapping dial 83 to face the corresponding resistance slot 811. The sliding table cylinder 104 drives the clamping cylinder II 105 to approach the tap-changer 8, the clamping cylinder II 105 clamps the dial 83 of the tap-changer 8 and drives the dial 83 of the tap-changer 8 to rotate in a direction close to the resistance slot 811. The dial 83 of the tap-changer 8 is embedded in the resistance slot 811. At the same time, the infrared sensor 106 monitors in real time whether the dial 83 of the tap-changer 8 is opened, improves the detection accuracy of the transformer 9, realizes the automatic adjustment of different resistance positions of the tap-changer 8, and thus completes the automatic detection of the on-off ability and resistance value of each position of the transformer 9.

[0041] Refer to Figure 2 and Figure 3 , the rotating plate 22 is connected with a correction component 11. The correction component 11 can correct the position of the transformer 9 on the roller conveyor line 5. The correction component 11 includes a camera 111 and an annular light source 112. The camera 111 is fixed on the surface of the rotating plate 22 close to the rotating part 24 by bolts, and the annular light source 112 is fixed on the end face of the rotating plate 22 facing the shooting end of the camera 111 by bolts. The annular light source 112 can supplement light to the transformer 9 on the roller conveyor line 5; when the roller conveyor line 5 drives the transformer 9 to approach the manipulator 2, the rotating part 24 rotates to drive the rotating plate 22 to approach 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, the annular light source 112 illuminates the transformer 9, and the shooting end of the camera 111 shoots the transformer 9 on the roller conveyor line 5 to judge the position of the transformer 9 and correct it, thereby improving the efficiency of the automatic detection of the transformer 9.

[0042] The implementation principle of an automatic test system for a transformer in Embodiment 1 of this application is as follows: The AGV feeds the transformer 9 onto the surface of the roller conveyor line 5, and the roller conveyor line 5 drives the transformer 9 to move to the low-voltage detection station. The rotating part 24 rotates to drive the rotating plate 22 to approach the second placement rack 4, and the clamping end of the first clamping cylinder 23 clamps the low-voltage fixture 7. The rotating part 24 continues to drive the rotating plate 22 to approach the low-voltage detection station, and the clamping end of the first clamping cylinder 23 clamps the low-voltage fixture 7 and installs the low-voltage fixture 7 on the low-voltage porcelain bottle of the transformer 9. The control cabinet 1 performs low-voltage detection on the transformer 9 at the low-voltage detection station; when the low-voltage detection is completed, the roller conveyor line 5 drives the transformer 9 to move to the high-voltage detection station. The rotating part 24 rotates to drive the rotating plate 22 to approach the first placement rack 3, and the clamping end of the first clamping cylinder 23 clamps the high-voltage fixture 6 on the first placement rack 3. The rotating part 24 continues to rotate to drive the rotating plate 22 to approach the high-voltage detection station, and the clamping end of the second clamping cylinder 105 clamps the high-voltage fixture 6 and installs the high-voltage fixture 6 on the high-voltage porcelain bottle of the transformer 9. The control cabinet 1 performs high-voltage detection on the transformer 9 at the high-voltage detection station, realizing the automatic test of the transformer 9. There is no need for staff to move the transformer 9 to the detection equipment for multiple detections, shortening the detection cycle of the transformer 9, improving the detection efficiency of the transformer 9, and thus reducing the detection cost of the transformer 9. Embodiment 2

[0043] Refer to Figure 4 and Figure 5, the difference between Embodiment 2 and Embodiment 1 is that the second 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 sliding table 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, the two clamping parts 1052 clamp both sides of the shunt switch 8 paddle 83 to form a limit. A locking assembly 12 is installed between the two clamping parts 1052. The locking assembly 12 can limit the shunt switch 8 paddle 83 between the two clamping parts 1052. The locking assembly 12 includes a first connecting rod 121, a second connecting rod 122, a slider 123, a first elastic member 124, a second elastic member 125, an electromagnet 126, a magnetic block 127, a contact switch 128 and a locking rod 129. A sliding cavity 1053 for the slider 123 to slide is provided on the surface of one clamping part 1052 facing the other clamping part 1052. The sliding direction of the slider 123 is parallel to the sliding direction of the second clamping cylinder 105. One end of the first connecting rod 121 is rotatably connected to the inner wall of the sliding cavity 1053, the other end of the first connecting rod 121 is rotatably connected to the end of the second connecting rod 122, and the other end of the second connecting rod 122 is rotatably connected to the surface of the slider 123. The first elastic member 124 and the second elastic member 125 can be compression springs or tension springs. In the embodiment of the present application, both the first elastic member 124 and the second elastic member 125 are compression springs and have a certain deformation ability. One end of the first elastic member 124 in the direction of its elastic force is connected to the inner wall of the sliding cavity 1053, and the other end of the first elastic member 124 in the direction of its elastic force is connected to the surface of the slider 123. The first elastic member 124 has an elastic force to drive the slider 123 to slide in the direction close to the second connecting rod 122, and the ends of the first connecting rod 121 and the second connecting rod 122 where they rotate protrude from the surface of the clamping part 1052.

[0044] Referring to Figure 4 and Figure 5 , a locking cavity 1054 for the locking rod 129 to slide is provided on the inner wall of the sliding cavity 1053. The sliding direction of the locking rod 129 is perpendicular to the sliding direction of the slider 123. One end of the second elastic member 125 in the direction of its elastic force is connected to the inner wall of the locking cavity 1054, and the other end of the second elastic member 125 in the direction of its elastic force is connected to the rod surface of the locking rod 129. The second elastic member 125 has an elastic force to drive the locking rod 129 to slide in the direction close to the locking cavity 1054. The end surface of the locking rod 129 flush with the inner wall of the sliding cavity 1053 abuts against the end surface of the slider 123 to form a limiting trend.

[0045] Referring to Figure 4 and Figure 5, the electromagnet 126 is connected to the end face of the locking rod 129 facing the slider 123. A locking groove 1055 for the end of the locking rod 129 to be embedded is provided on the end face of the clamping portion 1052 facing the locking cavity 1054. The magnetic block 127 is embedded in the inner wall of the locking groove 1055 facing the locking cavity 1054. The magnetic force of the electromagnet 126 is greater than the elastic force of the second elastic member 125. The contact switch 128 is connected to the inner wall of the sliding cavity 1053 near the first elastic member 124, and the contact switch 128 is electrically connected to the electromagnet 126; when the dial 83 of the tap changer 8 is embedded between the two clamping portions 1052, the two clamping portions 1052 slide towards each other, and the surfaces of the two clamping portions 1052 clamp both sides of the dial 83 of the tap changer 8 to form a limit. At the same time, the surface of the dial 83 of the tap changer 8 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, driving 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, the electromagnet 126 is powered on and has magnetism. At the same time, the abutting effect of the slider 123 on the locking rod 129 disappears. The electromagnet 126 and the magnetic block 127 attract each other with opposite polarities. The locking rod 129 overcomes the elastic force of the second elastic member 125 and slides towards the locking groove 1055. The end of the locking rod 129 is embedded in the locking groove 1055, and 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 portion 1051 and the two clamping portions 1052 surround the outer periphery of the dial 83 of the tap changer 8, so that when the dial 83 of the tap changer 8 rotates, it is not easy to break away from between the two clamping portions 1052, thereby improving the stability of the clamping cylinder clamping the dial 83 of the tap changer 8 and driving the dial 83 of the tap changer 8 to rotate.

[0046] The implementation principle of an automatic test system for a transformer in Embodiment 2 of this application is as follows: When the slider 83 of the tap changer 8 is embedded between the two clamping parts 1052, the two clamping parts 1052 slide towards each other. The surfaces of the two clamping parts 1052 clamp both sides of the slider 83 of the tap changer 8 to form a limit. At the same time, the surface of the slider 83 of the tap changer 8 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, driving 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 is turned on, and the electromagnet 126 is energized and has magnetism. At the same time, the abutting effect of the slider 123 on 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 second elastic member 125 and slides towards the locking groove 1055. The end of the locking rod 129 is embedded in the locking groove 1055, and 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 circumference of the slider 83 of the tap changer 8, so that the slider 83 of the tap changer 8 is not easily separated from between the two clamping parts 1052 when rotating, thereby improving the stability of the clamping cylinder for clamping the slider 83 of the tap changer 8 and driving the slider 83 of the tap changer 8 to rotate.

[0047] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope 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 position;The tap changer (8) comprises a main body (81), a rotating shaft (82) and a paddle (83); the main body (81) is mounted on a transformer (9) box cover; the rotating shaft (82) is rotatably connected to a surface of the main body (81); the paddle (83) is rotatably connected to an end surface of the rotating shaft (82) protruding from the main body (81); a plurality of resistor grooves (811) are provided at intervals on a surface of the main body (81) facing the paddle (83); the resistor grooves (811) are for the ends of the paddles (83) to be embedded in, so as to realize tap changer operation. The resistance value of the connection switch (8) at different gears is replaced, and the voltage 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 connection seat (102), and 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). ; 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 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.

4. 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.

5. The transformer automation test system according to claim 4 is 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).

6. The transformer automation test system according to claim 1, 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.

7. The transformer automation test system according to claim 6, 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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