Device for testing polarity of current transformer

Abstract

The invention provides a polarity testing device for a current transformer, and relates to the technical field of polarity testing, the polarity testing device comprises a base, a rotating assembly is arranged at the top of the middle of the base, the rotating assembly comprises a gear ring, the gear ring is rotatably mounted on the base, four vertical plates are fixed to the top of the gear ring at equal intervals, and sliding rails are fixed to the tops of the vertical plates; a sliding rail is arranged on one side of the base, a placement frame is fixed to the outer end of the sliding rail, third clamping plates are arranged on the two sides of the placement frame, a mutual inductor body is clamped in the two third clamping plates, and a conveying table is arranged on one side of the base. And in the process, the clamping assembly guides feeding and discharging of the mutual inductor body, so that the testing process is more automatic, the testing efficiency is improved, human intervention is reduced, manpower is saved, and disorder of a testing site is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polarity testing, in particular to a current transformer polarity testing device. BACKGROUND

[0002] The current transformer secondary winding polarity check is an important work in the current transformer acceptance, belongs to the rectifier and inductor manufacturing and intelligent power distribution system in the smart grid industry, and the work is to check whether the secondary circuit polarity is correct after the current transformer is installed. The polarity checking mode in the related art is that one person uses a battery to pass current on the primary side of the current transformer for a short time, and one person connects a pointer type ammeter on the secondary side of the current transformer, and uses the positive and negative bias of the ammeter to judge whether the secondary winding polarity is correct. The polarity tester is a device for polarity testing. The device can test the polarity of large power transformers and line transformers, and can also test the transformation ratio. The red line is connected to the secondary (K1) polarity end of the current transformer. The black line is connected to the secondary (K2) end of the current transformer. The yellow line is connected to the primary (L1) polarity end of the current transformer. The green line is connected to the primary (L2) end of the current transformer. After the lines are connected, the power is plugged in, and the power switch is turned on. Press the panel measurement button, wait for about 10 seconds, and the panel digital tube displays the measurement result (the transformation ratio value is directly displayed, such as 20 for 100 / 5 and 100 for 100 / 1). At the same time, the polarity indicator light of the panel displays the wiring mode and polarity of the current transformer at this time.

[0003] In the existing polarity test of the transformer, a plurality of connection lines need to be connected to the corresponding jack of the transformer. In this process, firstly, the test site is easy to be confused due to too many lines, and secondly, the transformer is tested one by one by human, which is low in efficiency and consumes time and manpower. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application aims to provide a current transformer polarity testing device to solve the problems in the background art. The present application has a novel structure. The transformer is intermittently sent into the placing frame of the rotating assembly by the conveying table, and then rotated to the test end for testing. After the test is completed, the transformer is sent out by the conveying table. The clamping assembly guides the feeding and discharging of the transformer body during the process, so that the testing process is more automated, the testing efficiency is improved, human intervention is reduced, manpower is saved, and the test site is avoided to be confused.

[0005] In order to achieve the above object, the application is realized by the following technical scheme: a current transformer polarity testing device, comprising a base, a rotating assembly is arranged on the middle top of the base, the rotating assembly comprises a gear ring, the gear ring is rotationally installed on the base, and four vertical plates are equidistantly fixed on the top of the gear ring, the top of the vertical plate is fixed with a sliding rail, and the outer end of the sliding rail is fixed with a placing frame, the two sides of the placing frame are provided with third clamping plates, and the transformer body is clamped inside the two third clamping plates, one side of the base is provided with a conveying table, and the other side of the base is provided with a sending table, a testing table is fixed on the side of the base perpendicular to the conveying table and the sending table, and the surface of the testing table is provided with a first plug and a second plug, the first plug is inserted into the rear end of the transformer body, and the second plug is inserted into the front end of the transformer body, a clamping assembly is arranged on the top of the rotating assembly, the clamping assembly comprises a fixed column, the center of the gear ring is provided with a fixed column, and the bottom of the fixed column is fixedly connected with the base, the top of the fixed column is fixed with an oval disc, the upper end of the oval disc is provided with a sliding frame, and the two ends of the sliding frame are slidably provided with first and second clamping plates.

[0006] Further, the top of the testing table is fixed with a fixed plate, and the first plug is arranged at the bottom of the fixed plate, a first electric push rod is fixed on the surface of the fixed plate, and a first threading block is fixed on the elongated end of the first electric push rod, a second electric push rod is fixed on the outer side of the first threading block, and a second threading block is fixed on the elongated end of the second electric push rod, and the first plug passes through the first and second threading blocks and corresponds to the back of the transformer body.

[0007] Further, the second plug is provided with three, and the front end of the three second plugs is fixed with a connecting plate, a third electric push rod is fixed on the surface of the testing table, and the elongated end of the third electric push rod is fixedly connected with the connecting plate, and the three second plugs correspond to the jack of the front end of the transformer body.

[0008] Further, the rotating assembly further comprises a horizontal plate, the horizontal plate is slidably connected on the surface of the sliding rail, the two sides of the horizontal plate are rotationally connected with connecting rods through shafts, the two sides of the placing frame are slidably inserted with inserting columns, one end of the inserting column is fixedly connected with the third clamping plate, the outer end of the inserting column is rotationally connected with the connecting rod through the shaft, and the outer surface of the inserting column penetrating out of the placing frame is sleeved with a reset spring, and the two ends of the reset spring are fixedly connected with the inserting column and the placing frame.

[0009] Further, a gear is rotationally installed on one side of the gear ring of the base, and the gear is meshingly connected with the gear ring, and a driving motor is fixedly installed on the top of the gear of the base, and the output end of the driving motor is fixedly connected with the gear.

[0010] Further, the back surface of the transverse plate is rotatably provided with a buckle frame through a rotating shaft, and the buckle frame is slidably buckled on the edge of the oval disc, and the two protruding ends of the oval disc correspond to the directions of the conveying table and the delivery table respectively.

[0011] Further, the clamping assembly further comprises a first screw rod, the inside of the oval disc is rotatably provided with the first screw rod through a bearing, and the surface of the first screw rod is threadedly provided with a threaded hole plate, and the top of the threaded hole plate is fixedly connected with the middle position of the sliding frame.

[0012] Further, the two ends of the sliding frame are rotatably provided with bidirectional screw rods through bearings, the two bidirectional screw rods are fixedly connected through shaft rods, and the first clamping plate and the second clamping plate are threadedly provided at the two ends of the bidirectional screw rods respectively.

[0013] Further, the conveying table is provided with a limiting plate on both sides, and the outer wall of the conveying table is fixedly provided with a fourth electric push rod, the elongated end of the fourth electric push rod is fixedly connected with the limiting plate, and the side plate of the transformer body is in sliding contact with the limiting plate.

[0014] Further, the outer side of the first clamping plate is fixedly provided with a vertical frame, the bottom of the two ends of the vertical frame is fixedly provided with an inclined block, the outer wall of the conveying table and the delivery table is fixedly provided with an inclined plate at the position corresponding to the inclined block, and the inclined block slides along the inclined surface of the inclined plate, the bottom of the conveying table and the delivery table is fixedly provided with four spring telescopic rods, and the bottom of the spring telescopic rod is fixedly connected with the base.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. After the placing frame is rotated to one side of the test table, the first electric push rod drives the first threading block to move, the second electric push rod adjusts the height of the second threading block, so as to correspond to the jack on the back surface of the transformer body, and the first electric push rod is used for plug-in, the third electric push rod drives the connecting plate and the three second wires to move, and is inserted into the front end of the transformer body, so as to test the polarity of the transformer body, and improve the convenience of plug-in.

[0017] 2. The conveying frame located on one side of the delivery table and the conveying table is located at the protruding position of the oval disc, so that the transverse plate slides forward along the slide rail, the connecting rod pushes the plug post to move outward, the clamping effect of the third clamping plate on the transformer body is released, the subsequent test is facilitated, the delivery of the transformer body is completed, and a new transformer body is placed in the placing frame, the driving motor drives the gear to rotate and engage with the gear ring, the gear ring drives four groups of vertical plates and slide rails to rotate, four placing frames rotate along the outside of the oval disc, the placing frame opposite to the test table moves backward along the slide rail through the transverse plate, the reset spring drives the plug post and the third clamping plate to move into the placing frame, the transformer body is clamped, the stability of the transformer body in the test process is maintained, four groups of placing frames alternately perform the processes of feeding, testing and discharging, and the overall efficiency and smoothness of the device are improved.

[0018] 3. The application is when the test completed mutual inductor body rotates to the side of the delivery table, the two coaxial bidirectional screw rods rotate synchronously, the first clamping plate and the second clamping plate approach each other, in the approaching process, the inclined block slides along the inclined surface of the inclined plate, and then the conveying table and the delivery table move upward to keep the parallel position with the placing frame, at this time, the mutual inductor body on the conveying table also just enters between the first clamping plate and the second clamping plate, the mutual inductor body in the placing frame close to the delivery table and the new mutual inductor body on the conveying table are clamped by the first clamping plate and the second clamping plate at the same time, then the first screw rod rotates, the screw hole plate cooperates with the first screw rod to drive the sliding frame to move horizontally, the test completed mutual inductor body is moved to the delivery table, the new mutual inductor body is placed in the empty placing frame, and preparation for testing is made, so that the mutual inductor body feeding and discharging are synchronously carried out, and the efficiency of the overall operation of the device is improved.

[0019] 4. The application is that the fourth electric push rod pushes the limiting plate to move, limits the two sides of the mutual inductor body, prevents deviation in the conveying process, and affects entering the placing frame, at the beginning, in order to avoid the rotation of the rotating assembly being interfered by the conveying table and the delivery table, the first clamping plate at both ends of the sliding frame is the outermost clamping plate, the first clamping plate and the second clamping plate rotate through the built-in motor driven bidirectional screw rod, when the first clamping plate moves outward, the vertical frame leads the inclined block to slide along the inclined surface of the inclined plate, the conveying table and the delivery table are extruded downward, the spring telescopic rod contracts, the height of the conveying table and the delivery table is lowered, and interference on the rotation of the placing frame is avoided.

[0020] 5. Compared with the prior art, the mutual inductor is intermittently sent into the placing frame of the rotating assembly through the conveying table, then rotates to the test end for testing, and is sent out by the delivery table after the test is completed, the feeding and discharging of the mutual inductor body are guided by the clamping assembly in the process, the test process is more automated, the test efficiency is improved, human intervention is reduced, manpower is saved, and test site confusion is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure schematic diagram of the application for a current transformer polarity testing device;

[0022] Figure 2 It is a test table surface structure schematic diagram of the application for a current transformer polarity testing device;

[0023] Figure 3 It is a conveying table and delivery table position relationship schematic diagram of the application for a current transformer polarity testing device;

[0024] Figure 4 It is a rotating assembly structure schematic diagram of the application for a current transformer polarity testing device;

[0025] Figure 5It is a placing frame for a current transformer polarity testing device and an oval disc connection schematic diagram of the application;

[0026] Figure 6 It is a placing frame internal structure schematic diagram for a current transformer polarity testing device of the application;

[0027] Figure 7 It is a clamping assembly structure schematic diagram for a current transformer polarity testing device of the application;

[0028] Figure 8 It is a sliding frame internal structure schematic diagram for a current transformer polarity testing device of the application.

[0029] In the figure: 1, base; 2, test table; 21, fixed plate; 22, first electric push rod; 23, first plug wire; 24, first threading block; 25, second electric push rod; 26, second threading block; 27, second plug wire; 28, third electric push rod; 29, connecting plate; 3, clamping assembly; 31, fixed column; 32, oval disc; 33, first screw rod; 34, sliding frame; 35, screw hole plate; 36, bidirectional screw rod; 37, vertical frame; 38, inclined block; 39, inclined plate; 310, first clamping plate; 312, second clamping plate; 4, rotating assembly; 41, placing frame; 42, transformer body; 43, driving motor; 44, gear; 45, gear ring; 46, vertical plate; 47, sliding rail; 48, buckle frame; 49, horizontal plate; 410, connecting rod; 411, plug column; 412, third clamping plate; 413, reset spring; 5, conveying table; 51, fourth electric push rod; 52, limiting plate; 6, sending-out table; 7, spring telescopic rod. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the application is further described below in combination with specific embodiments.

[0031] Please refer to Figures 1 to 8The application provides a technical scheme: a current transformer polarity testing device, which comprises a base 1, a rotating assembly 4 is arranged on the middle top of the base 1, the rotating assembly 4 comprises a gear ring 45, the gear ring 45 is rotationally installed on the base 1, four vertical plates 46 are equidistantly fixed on the top of the gear ring 45, a sliding rail 47 is fixed on the top of the vertical plate 46, a placing frame 41 is fixed on the outer end of the sliding rail 47, a third clamping plate 412 is arranged on the two sides of the placing frame 41, a transformer body 42 is clamped in the third clamping plate 412, a conveying table 5 is arranged on one side of the base 1, a sending table 6 is arranged on the other side of the base 1, a testing table 2 is fixed on the side of the base 1 which is perpendicular to the conveying table 5 and the sending table 6, a first plug wire 23 and a second plug wire 27 are arranged on the surface of the testing table 2, the first plug wire 23 is inserted into the rear end of the transformer body 42, and the second plug wire 27 is inserted into the front end of the transformer body 42, a clamping assembly 3 is arranged on the top of the rotating assembly 4, the clamping assembly 3 comprises a fixed column 31, the fixed column 31 is arranged at the center of the gear ring 45, and the bottom of the fixed column 31 is fixedly connected with the base 1, an oval disc 32 is fixed on the top of the fixed column 31, a sliding frame 34 is arranged on the upper end of the oval disc 32, a first clamping plate 310 and a second clamping plate 312 are slidingly arranged on the two ends of the sliding frame 34, when the device is used, the transformer body 42 is placed on the conveying table 5 at intervals, the transformer body 42 is clamped by the clamping assembly 3 and placed in the placing frame 41 of the rotating assembly 4, the placing frame 41 is rotated to one side of the testing table 2 to perform polarity testing, after the testing is completed, the transformer body 42 is sent out by the sending table 6 through the clamping assembly 3, and four groups of placing frames 41 on the rotating assembly 4 alternately perform feeding, testing and discharging, so that the overall testing efficiency is improved.

[0032] The top of the test table 2 is fixed with a fixed plate 21, and a first plug wire 23 is arranged at the bottom of the fixed plate 21. A first electric push rod 22 is fixed on the surface of the fixed plate 21, and a first wire passing block 24 is fixed on the extension end of the first electric push rod 22. A second electric push rod 25 is fixed on the outer side of the first wire passing block 24, and a second wire passing block 26 is fixed on the extension end of the second electric push rod 25. The first plug wire 23 passes through the first wire passing block 24 and the second wire passing block 26 and corresponds to the back of the transformer body 42. Three second plug wires 27 are provided, and the front ends of the three second plug wires 27 are fixed with a connecting plate 29. A third electric push rod 28 is fixed on the surface of the test table 2, and the extension end of the third electric push rod 28 is fixedly connected with the connecting plate 29. The three second plug wires 27 correspond to the jack at the front end of the transformer body 42. In the scheme, the three jacks on the front of the transformer corresponding to the first plug wire 23 are set as P1 on the primary side and S1 and S2 on the secondary side. The jack on the back of the transformer is P2. S1 is the first end, and S2 is the last end, mainly used for connecting secondary loop measuring instruments such as ammeter and electric energy meter. The wiring direction is P1-->P2, S1-->S2. The wiring principle of this part is the same as that of the prior art CN220894507U. After the placing frame 41 is rotated to one side of the test table 2, the first electric push rod 22 drives the first wire passing block 24 to move, the second electric push rod 25 adjusts the height of the second wire passing block 26, so as to correspond to the jack on the back of the transformer body 42, and the first electric push rod 22 is pushed and plugged. The third electric push rod 28 drives the connecting plate 29 and the three second plug wires 27 to move and insert into the front end of the transformer body 42, so as to test the polarity of the transformer body 42.

[0033] The rotating assembly 4 further comprises a horizontal plate 49, the horizontal plate 49 is slidably connected to the surface of the slide rail 47, both sides of the horizontal plate 49 are rotatably connected with connecting rods 410 through pivots, both sides of the placing frame 41 are slidably inserted with insertion columns 411, one end of the insertion column 411 is fixedly connected with a third clamping plate 412, the outer end of the insertion column 411 is rotatably connected with the connecting rod 410 through a pivot, the insertion column 411 penetrates out of the outer surface of the placing frame 41 and is sleeved with a return spring 413, and both ends of the return spring 413 are fixedly connected with the insertion column 411 and the placing frame 41, the base 1 is rotatably installed with a gear 44 on one side of the tooth ring 45, the gear 44 is meshedly connected with the tooth ring 45, the base 1 is fixedly installed with a driving motor 43 on the top of the gear 44, and the output end of the driving motor 43 is fixedly connected with the gear 44, the back surface of the horizontal plate 49 is rotatably installed with a buckle frame 48 through a pivot, and the buckle frame 48 is slidably buckled on the edge of the oval disc 32, the two protruding ends of the oval disc 32 correspond to the directions of the conveying table 5 and the feeding table 6 respectively, the conveying frame located on one side of the feeding table 6 and the conveying table 5 is at the protruding position of the oval disc 32, so the horizontal plate 49 slides forward to the slide rail 47, so that the connecting rod 410 pushes the insertion column 411 to move outward, the clamping effect of the third clamping plate 412 on the mutual inductor body 42 is released, the subsequent testing is facilitated, the mutual inductor body 42 is fed out, and a new mutual inductor body 42 is put into the placing frame 41, the driving motor 43 drives the gear 44 to rotate and mesh with the tooth ring 45, the tooth ring 45 drives the four vertical plates 46 and the slide rail 47 to rotate, the four placing frames 41 rotate along the outside of the oval disc 32, the placing frame 41 opposite to the testing table 2 moves backward along the slide rail 47 through the horizontal plate 49, the insertion column 411 and the third clamping plate 412 are driven by the return spring 413 to move into the placing frame 41, the mutual inductor body 42 is clamped, the stability of the mutual inductor body 42 during the testing process is maintained, the four placing frames 41 alternately perform the processes of feeding, testing and discharging, and the overall efficiency and smoothness of the device are improved.

[0034] The clamping assembly 3 further comprises a first screw rod 33 rotatably installed inside the oval disc 32 through a bearing, and a threaded hole plate 35 is threadedly connected to the surface of the first screw rod 33, the top of the threaded hole plate 35 is fixedly connected to the middle position of the sliding frame 34, both ends of the sliding frame 34 are rotatably installed with bidirectional screw rods 36 through bearings, the two bidirectional screw rods 36 are fixedly connected through shafts, the first clamping plate 310 and the second clamping plate 312 are respectively threadedly connected to both ends of the bidirectional screw rod 36, the both sides of the conveying table 5 are provided with limiting plates 52, and the outer wall of the conveying table 5 is fixedly provided with a fourth electric push rod 51, the elongated end of the fourth electric push rod 51 is fixedly connected to the limiting plate 52, the side plate of the transformer body 42 is in sliding contact with the limiting plate 52, the outer side of the first clamping plate 310 is fixedly provided with a vertical frame 37, and the bottom of both ends of the vertical frame 37 is fixedly provided with an inclined block 38, the outer walls of the conveying table 5 and the conveying-out table 6 are fixedly provided with inclined plates 39 at positions corresponding to the inclined block 38, and the inclined block 38 slides along the inclined surface of the inclined plate 39, the bottom of the conveying table 5 and the conveying-out table 6 is fixedly provided with four spring telescopic rods 7, and the bottom of the spring telescopic rod 7 is fixedly connected to the base 1, the conveying table 5 is in front of the conveying transformer body 42, and the fourth electric push rod 51 pushes the limiting plate 52 to move, thereby limiting the both sides of the transformer body 42, preventing the transformer body 42 from deviating during conveying and affecting the entry into the placing frame 41, at the beginning, in order to avoid the rotation of the rotating assembly 4 being interfered by the conveying table 5 and the conveying-out table 6, the first clamping plate 310 at both ends of the sliding frame 34 is the outermost clamping plate, the first clamping plate 310 and the second clamping plate 312 are driven to rotate by the built-in motor and the bidirectional screw rod 36, when the first clamping plate 310 moves outward, the vertical frame 37 leads the inclined block 38 to slide along the inclined surface of the inclined plate 39, thereby pressing the conveying table 5 and the conveying-out table 6 downward, the spring telescopic rod 7 is contracted, the height of the conveying table 5 and the conveying-out table 6 is lowered, thereby avoiding the interference to the rotation of the placing frame 41, when the tested transformer body 42 is rotated to one side of the conveying-out table 6, the two coaxial bidirectional screw rods 36 are synchronously rotated, the first clamping plate 310 and the second clamping plate 312 are close to each other, during the approaching process, the inclined block 38 slides along the inclined surface of the inclined plate 39, and then the conveying table 5 and the conveying-out table 6 move upward, thereby keeping the parallel position with the placing frame 41, at this time, the transformer body 42 on the conveying table 5 also just enters between the first clamping plate 310 and the second clamping plate 312, the first clamping plate 310 and the second clamping plate 312 simultaneously clamp the transformer body 42 in the placing frame 41 close to one side of the conveying-out table 6 and the new transformer body 42 on the conveying table 5, then the first screw rod 33 is rotated, the threaded hole plate 35 cooperates with the first screw rod 33 to drive the sliding frame 34 to move horizontally, thereby moving the tested transformer body 42 to the conveying-out table 6, and putting the new transformer body 42 into the empty placing frame 41, thereby preparing for testing, so as to realize the synchronous conveying and discharging of the transformer body 42, and improve the overall operation efficiency of the device.

[0035] When the device is used, the mutual inductor body 42 is placed on the conveying table 5, the mutual inductor body 42 is clamped into the placing frame 41 of the rotating assembly 4 by the clamping assembly 3, the placing frame 41 is rotated to one side of the test table 2 for polarity test, after the test is completed, the mutual inductor body 42 is sent out to the sending-out table 6 through the clamping assembly 3, the conveying frame located on one side of the sending-out table 6 and the conveying table 5 is at the position protruding from the elliptical disc 32, all the cross plates 49 slide forward along the slide rails 47, the connecting rod 410 pushes the inserting column 411 to move outward, the third clamping plate 412 releases the clamping effect on the mutual inductor body 42, facilitating the sending-out of the mutual inductor body 42 after the subsequent test is completed and the placing of the new mutual inductor body 42 into the placing frame 41, the driving motor 43 drives the gear 44 to rotate and engage with the gear ring 45, the gear ring 45 drives the four vertical plates 46 and the slide rails 47 to rotate, the four placing frames 41 rotate along the outer side of the elliptical disc 32, the placing frame 41 opposite to the test table 2 moves backward along the slide rails 47 through the cross plate 49, the resetting spring 413 drives the inserting column 411 and the third clamping plate 412 to move into the placing frame 41, clamps the mutual inductor body 42 and keeps the stability of the mutual inductor body 42 during the test, the four placing frames 41 alternately perform the processes of feeding, testing and discharging, improving the overall efficiency and smoothness of the device, before conveying the mutual inductor body 42, the limiting plate 52 is pushed to move by the fourth electric push rod 51, limiting the mutual inductor body 42 on both sides, preventing the mutual inductor body 42 from deviating during the conveying process and affecting the entry into the placing frame 41, at the beginning, in order to avoid the rotation of the rotating assembly 4 being interfered by the conveying table 5 and the sending-out table 6, the first clamping plates 310 at both ends of the sliding frame 34 are the outermost clamping plates, the first clamping plate 310 and the second clamping plate 312 rotate through the built-in motor driving bidirectional screw rod 36, when the first clamping plate 310 moves outward, the vertical frame 37 leads the inclined block 38 to slide along the inclined surface of the inclined plate 39, pressing the conveying table 5 and the sending-out table 6 downward, the spring telescopic rod 7 contracts, the height of the conveying table 5 and the sending-out table 6 is lowered, avoiding the interference with the rotation of the placing frame 41, when the mutual inductor body 42 after the test is rotated to one side of the sending-out table 6, the two coaxial bidirectional screw rods 36 rotate synchronously, the first clamping plate 310 and the second clamping plate 312 approach each other, during the approaching process, the inclined block 38 slides along the inclined surface of the inclined plate 39, and then the conveying table 5 and the sending-out table 6 move upward, keeping parallel with the placing frame 41, at this time, the mutual inductor body 42 on the conveying table 5 also enters between the first clamping plate 310 and the second clamping plate 312, the first clamping plate 310 and the second clamping plate 312 simultaneously clamp the mutual inductor body 42 in the placing frame 41 close to the sending-out table 6 side and the new mutual inductor body 42 on the conveying table 5, then the first screw rod 33 rotates, the screw hole plate 35 cooperates with the first screw rod 33 to drive the sliding frame 34 to move horizontally, moves the mutual inductor body 42 after the test to the sending-out table 6, and places the new mutual inductor body 42 into the empty placing frame 41, preparing for the test, thereby realizing the synchronous feeding and discharging of the mutual inductor body 42 and improving the overall operation efficiency of the device.

[0036] The foregoing merely illustrates the principles of the application and applications of its pref- erred aspects. It will thus be appreciated that those skilled in the art will be able to devise various arrangements which, although not explicitly described or shown herein, embody the principles of the application and are thus within its spirit and scope.

[0037] In addition, it should be understood that although the description herein is based upon embodiments, not every embodiment contains only one independent technical solution, and the description herein is merely for the sake of clarity, and those skilled in the art should consider the description as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A current transformer polarity test device, comprising a base (1), characterized in that: A rotating assembly (4) is provided at the middle top of the base (1), and the rotating assembly (4) includes a gear ring (45), the gear ring (45) is rotatably mounted on the base (1), and four vertical plates (46) are fixed at equal intervals on the top of the gear ring (45), a slide rail (47) is fixed on the top of the vertical plate (46), and a placement frame (41) is fixed on the outer end of the slide rail (47), and a third clamping plate (412) is provided on both sides of the placement frame (41), and the two third clamping plates (412) clamp the mutual inductor body (42) inside, a conveying platform (5) is provided on one side of the base (1), and a sending platform (6) is provided on the other side of the base (1), and a test bench is fixed on one side of the base (1) perpendicular to the conveying platform (5) and the sending platform (6). (2), and a first plug wire (23) and a second plug wire (27) are provided on the surface of the test bench (2), the first plug wire (23) is plugged into the rear end of the transformer body (42), and the second plug wire (27) is plugged into the front end of the transformer body (42), a clamping assembly (3) is provided on the top of the rotating assembly (4), the clamping assembly (3) includes a fixed column (31), a fixed column (31) is provided at the center of the tooth ring (45), and the bottom of the fixed column (31) is fixedly connected to the base (1), an elliptical disk (32) is fixed on the top of the fixed column (31), a sliding frame (34) is provided on the upper end of the elliptical disk (32), and a first clamping plate (310) and a second clamping plate (312) are slidably provided at both ends of the sliding frame (34).

2. The current transformer polarity test device according to claim 1, characterized in that: A fixing plate (21) is fixed on the top of the test bench (2), and a first plug wire (23) is arranged at the bottom of the fixing plate (21); a first electric push rod (22) is fixed on the surface of the fixing plate (21), and a first threading block (24) is fixed to the extended end of the first electric push rod (22); a second electric push rod (25) is fixed to the outside of the first threading block (24), and a second threading block (26) is fixed to the extended end of the second electric push rod (25); the first plug wire (23) passes through the first threading block (24) and the second threading block (26) and corresponds to the back of the transformer body (42).

3. The current transformer polarity test device according to claim 2, characterized in that: Three second plug wires (27) are provided, and a connecting plate (29) is fixed to the front ends of the three second plug wires (27). A third electric push rod (28) is fixed on the surface of the test bench (2), and the extended end of the third electric push rod (28) is fixedly connected to the connecting plate (29). The three second plug wires (27) correspond to the jacks at the front end of the transformer body (42).

4. The current transformer polarity test device according to claim 1, characterized in that: The rotating assembly (4) also includes a transverse plate (49), the surface of the slide rail (47) is slidably connected to the transverse plate (49), both sides of the transverse plate (49) are rotatably connected to the connecting rod (410) through a rotating shaft, and both sides of the placement frame (41) are slidably inserted with a plug-in column (411), one end of the plug-in column (411) is fixedly connected to the third clamping plate (412), the outer end of the plug-in column (411) is rotatably connected to the connecting rod (410) through a rotating shaft, the plug-in column (411) passes through the outer surface of the placement frame (41) and is sleeved with a reset spring (413), and both ends of the reset spring (413) are fixedly connected to the plug-in column (411) and the placement frame (41).

5. The current transformer polarity test device according to claim 4, characterized in that: The base (1) is located on one side of the gear ring (45) and is rotatably mounted with a gear (44), and the gear (44) is meshedly connected with the gear ring (45). The base (1) is located on the top of the gear (44) and is fixedly mounted with a drive motor (43), and the output end of the drive motor (43) is fixedly connected to the gear (44).

6. The current transformer polarity test device according to claim 5, characterized in that: A buckle frame (48) is mounted on the back of the transverse plate (49) through a rotating shaft, and the buckle frame (48) is slidably buckled on the edge of the elliptical plate (32). The two protruding ends of the elliptical plate (32) correspond to the directions of the conveying platform (5) and the sending platform (6).

7. The current transformer polarity test device according to claim 1, characterized in that: The clamping assembly (3) further comprises a first screw (33), the first screw (33) being rotatably mounted inside the elliptical disk (32) via a bearing, and a screw hole plate (35) being threadedly sleeved on the surface of the first screw (33), the top of the screw hole plate (35) being fixedly connected to the middle position of the sliding frame (34).

8. The current transformer polarity test device according to claim 7, characterized in that: Both ends of the sliding frame (34) are rotatably mounted with bidirectional screw rods (36) via bearings. The two bidirectional screw rods (36) are fixedly connected via a shaft. The first clamping plate (310) and the second clamping plate (312) are respectively threadedly sleeved on the two ends of the bidirectional screw rod (36).

9. The current transformer polarity test device according to claim 8, characterized in that: Limiting plates (52) are provided on both sides of the conveying platform (5), and a fourth electric push rod (51) is fixed on the outer wall of the conveying platform (5), the extended end of the fourth electric push rod (51) is fixedly connected to the limiting plates (52), and the side plates of the mutual inductor body (42) are in sliding contact with the limiting plates (52).

10. The current transformer polarity test device according to claim 9, characterized in that: A vertical frame (37) is fixed on the outside of the first clamping plate (310), and inclined blocks (38) are fixed at the bottom of both ends of the vertical frame (37). Inclined plates (39) are fixed at positions corresponding to the inclined blocks (38) on the outer walls of the conveying platform (5) and the delivery platform (6), and the inclined blocks (38) slide along the inclined surfaces of the inclined plates (39). Four spring telescopic rods (7) are fixed at the bottom of the conveying platform (5) and the delivery platform (6), and the bottoms of the spring telescopic rods (7) are fixedly connected to the base (1).

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