A current transformer production and testing equipment

Abstract

The present invention provides a current transformer production and testing device, which belongs to the technical field of current transformer current ratio detection. It includes a detection base, a first slide groove with one end connected to the outside is provided on the top of the detection base, and three second slide grooves are evenly distributed on one side of the first slide groove. The inner wall of each second slide groove is fixedly connected to a group of plug-in structures distributed vertically, and each group of plug-in structures is composed of two plug-in units. The present invention sets a limit detection device, which is used to limit and fix the current transformer to be detected. The limit detection device can realize rapid fixation and rapid disassembly of the current transformer, making it convenient for staff to disassemble the current transformer and convenient for detecting the next current transformer to be detected. At the same time, the limit detection device is used to cooperate with the detection base and the detection coil to realize the detection of the current ratio of the current transformer.

Description

Technical Field

[0001] The present invention relates to the technical field of current transformer current ratio, and in particular to a current transformer production and detection device. Background Art

[0002] Open-type current transformers are easy to install and use, and are typically used for contactless current measurement. Their design makes installation and removal very simple, making them particularly suitable for current measurement when connected to a circuit.

[0003] The current ratio of a current transformer refers to the proportional relationship between the current transformer current and the current. This ratio is an important parameter of the current transformer and is used to describe the ratio of its conversion.

[0004] The current ratio of existing current transformers is usually detected using an AC bridge. During the detection, the wiring needs to be carried out one by one, and the detection can only be carried out after the wiring is completed. This is not suitable for the detection of current transformers that have just been produced in large quantities. In addition, the power is connected during the detection process, which may easily cause accidental injury to workers. Therefore, this application provides a current transformer production detection equipment to meet the needs. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a current transformer production detection equipment to solve the problem that the current ratio of the existing current transformer is usually detected using an AC bridge. During the detection, the wiring needs to be carried out one by one, and the detection can only be carried out after the wiring is completed. It is not suitable for the detection of current transformers that have just been produced in large quantities. In addition, the power connection operation is in progress during the detection process, which is easy to injure the staff accidentally.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A current transformer production and detection equipment includes a detection base, a first slide groove with one end connected to the outside is provided on the top of the detection base, three second slide grooves are evenly distributed on one side of the first slide groove, and the inner wall of each second slide groove is fixedly connected to a group of vertically distributed plug-in structures, and each group of the plug-in structures is composed of two plug-in units; the second side plate and the first side plate are fixedly connected at both ends of the top of the detection base, and a detection coil is connected between the second side plate and the first side plate; a limit detection device is located at the bottom of the first slide groove, and the limit detection device is used to limit the current transformer and cooperate with the detection base to detect the current transformer, and the limit detection device includes a sliding base slidably connected to the bottom of the first slide groove; and also includes a power connection unit for realizing power connection between the sliding base and the detection base.

[0008] Optionally, the first side panel is located on one side of the opening end of the first chute, and the first side panel is an L-shaped structure, and a control switch is provided on one side of the first side panel; the detection coil is composed of three groups of winding segments, two groups of winding segments and one group of winding segments connected in sequence, and the positions of the three groups of winding segments, two groups of winding segments and one group of winding segments correspond to the three second chute respectively.

[0009] Optionally, the second slide groove is connected to the first slide groove; a first slide plate and a second slide plate are fixedly connected on both sides of the open end of the second slide groove, and the first slide plate and the second slide plate are consistent in size and structure; the second slide plate is formed by the first guide section, the sliding section and the first connecting section being fixedly connected in sequence, and the first connecting section is fixedly connected to one side of the second slide groove, and weakened grooves are provided on both sides of the first connecting section, the first guide section is an inward-turned structure, the length of the second slide groove is consistent with the length of the sliding base and the sum of the height of the two sliding sections, and hidden grooves are provided on both sides of the second slide groove, and the hidden grooves are adapted to the first guide section; it also includes a positioning unit for positioning the sliding base.

[0010] Optionally, the positioning unit includes a release groove opened on one side of the sliding section, and the release groove is fixedly connected to a positioning piece near one end of the first guide section; the positioning piece is formed by the second connecting section, the first deformation section and the positioning section fixedly connected in sequence, one end of the second connecting section is fixedly connected to one side of the release groove, the first deformation section is an outward-turned arc structure, and when the positioning piece is in an initial state, its surface is adapted to the surface of the sliding base for positioning the sliding base.

[0011] Optionally, a transformer slot is provided on one side of the sliding base, and two second clamping columns adapted to the bottom of the current transformer are provided at the bottom of the transformer slot. The sliding base is fixedly connected with a slide, a transformer baffle and a rotating seat at the edge positions of the two long sides and one short side of the transformer slot respectively. The transformer baffle is connected with docking cards at positions corresponding to the two terminal ends on the current transformer. The inner walls of the transformer slot are fixedly connected with symmetrical elastic cards at both ends. An ammeter slot is provided on the side of the sliding base close to the rotating seat, and an ammeter is fixedly connected to the ammeter slot.

[0012] Optionally, the elastic card is composed of a groove section, a rotating section, a side limit section, a second deformation section, a top limit section and a second guide section that are fixedly connected in sequence, and one side of the rotating section is rotatably connected to the inner wall of the transformer groove through a rotating shaft; the groove section is in contact with the inner wall of the transformer groove in a working state, the rotating section is a Z-shaped structure, the side limit section and the groove section are parallel to each other, the second deformation section is a quarter-circular arc structure, and its thickness gradually changes from thin to thick from the middle to the two ends, the top limit section and the side limit section are arranged perpendicular to each other, and the second guide section is an outward-turned structure.

[0013] Optionally, a rotating plate is rotatably connected to the rotating seat, and a clamping plate is connected to one side of the rotating plate, and the clamping plate is used to fix the upper and lower shells of the current transformer; the clamping plate includes a U-shaped section fixedly connected to one side of the rotating plate, and both ends of the U-shaped section are fixedly connected to clamping sections.

[0014] Optionally, a socket is provided on the side of the transformer baffle corresponding to the docking card, and a reset spring is fixedly connected to the bottom of the socket; the docking card is composed of a wrapping segment and two third guide segments, and two ends of the wrapping segment are fixedly connected to two symmetrical third guide segments. The wrapping segment is a three-quarter circular ring structure, and a docking groove is provided on the inner surface wall of the wrapping segment, and a docking connector is nested and fixed inside the docking groove.

[0015] Optionally, the power connection unit includes two power connection limit holes opened on one side of the sliding base, the positions of the two power connection limit holes correspond to the plug-in unit, and the sliding base is provided with a power connection groove near the power connection limit holes; the plug-in unit includes a connecting column fixedly connected to the surface wall of the second slide groove, a power connection rod is fixedly connected at the center position of one side of the connecting column, a power connection ring is fixedly connected to the outer wall of the power connection rod, and a plurality of power connection elastic parts evenly distributed in a ring shape are fixedly connected to one side of the connecting column, and a rubber strip is fixedly connected between every two power connection elastic parts; the shape of the power connection groove is consistent with the shape of the plurality of power connection elastic parts distributed in a ring shape, and the outer dimensions of the power connection groove are slightly smaller than the outer dimensions of the plurality of power connection elastic parts distributed in a ring shape.

[0016] Optionally, the power connection elastic member is formed by sequentially connecting a first elastic piece, a power connection piece, and a second elastic piece, the power connection piece is a V-shaped structure, and the two ends of the power connection piece are fixedly connected to the first elastic piece and the second elastic piece respectively; the second elastic piece is formed by sequentially fixing the fourth elastic segment and the third elastic segment, the power connection piece is formed by fixedly connecting two hard segments and a power connection docking segment, the first elastic piece is formed by sequentially fixing the second elastic segment, the first elastic segment, and the third connection segment; one end of the fourth elastic segment is fixedly connected to one end of the fourth elastic segment It is fixedly connected to one side of the connecting column, the end of the third elastic section away from the fourth elastic section is fixedly connected to one end of the hard section, one end of the third connecting section is fixedly connected to one end of the power connection pole, the end of the second elastic section away from the first elastic section is fixedly connected to one end of the hard section, the two hard sections are respectively fixedly connected to the two ends of the power connection docking section, the structure of the third elastic section is consistent with that of the second elastic section, the end of the third elastic section close to the fourth elastic section is a convex structure, and the end of the third elastic section close to the hard section is a concave structure.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above scheme, a limit detection device is set up, which is used to limit and fix the current transformer to be tested. The limit detection device can realize rapid fixation and rapid disassembly of the current transformer, which is convenient for the staff to disassemble the current transformer and facilitate the detection of the next current transformer to be tested. At the same time, the limit detection device is used to cooperate with the detection base and the detection coil to realize the detection of the current ratio of the current transformer. It is installed on the assembly line through the detection base and the limit detection device, which is suitable for assembly line detection and convenient for quality detection of large quantities of current transformers to be tested.

[0019] By setting up the power connection slot and the plug-in unit to cooperate with each other, the connection and closure of the detection coil circuit are realized. It is opened in real time during the detection process and disconnected after the detection is completed, ensuring the safety of the detection personnel and avoiding electric shock. At the same time, the power connection elastic part and the power connection ring are in contact to achieve connection, ensuring that the connection between the two plug-in units will not be achieved due to accidental touch by workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the current transformer production and testing equipment;

[0022] Figure 2 A schematic diagram of the three-dimensional structure of the detection base and the limit detection device;

[0023] Figure 3 Schematic diagram of the three-dimensional structure of the first sliding plate and the second sliding plate;

[0024] Figure 4 This is a schematic diagram of the exploded three-dimensional structure of the second sliding piece and the positioning piece;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the plug-in unit;

[0026] Figure 6 It is a schematic diagram of the cutaway three-dimensional structure of the plug-in unit;

[0027] Figure 7 A schematic diagram of the three-dimensional structure of the first state of the limit detection device and the current transformer assembly;

[0028] Figure 8 A schematic diagram of the third-dimensional structure of the limit detection device and the current transformer in the second state;

[0029] Figure 9 for Figure 8 Schematic diagram of the three-dimensional structure at A in the middle;

[0030] Figure 10 It is a schematic diagram of the three-dimensional structure of the limit detection device;

[0031] Figure 11 This is a partially cutaway schematic diagram of the first-perspective three-dimensional structure of the limit detection device;

[0032] Figure 12 A schematic diagram of the third perspective structure of the position limit detection device partially cut away from the second perspective;

[0033] Figure 13 A partially cutaway diagram of the third-view perspective structure of the limit detection device;

[0034] Figure 14 for Figure 12 Schematic diagram of the three-dimensional structure at B in the middle;

[0035] Figure 15 It is a schematic diagram of the three-dimensional structure of the docking card;

[0036] Figure 16 A schematic diagram of the three-dimensional structure of the docking card;

[0037] Figure 17 for Figure 16 Schematic diagram of the three-dimensional structure at point C in the middle.

[0038] Reference numerals:

[0039] 1. Detection base; 11. First slide; 12. Second slide; 121. Hidden groove; 13. First slide; 14. Second slide; 141. First guide section; 142. Sliding section; 143. First connecting section; 144. Weakened groove; 145. Release groove; 15. Positioning piece; 151. Second connecting section; 152. First deformation section; 153. Positioning section; 2. Positioning limit detection device; 21. Sliding base; 21 1. Slide plate; 212. Rotating seat; 213. Ammeter slot; 22. Power supply limit hole; 221. Power supply slot; 23. Ammeter; 24. Rotating plate; 25. Clamping plate; 251. U-shaped section; 252. Clamping section; 26. Elastic card; 262. Rotating shaft; 263. Abutting groove section; 264. Rotating section; 265. Side limiting section; 266. Second deformation section; 267. Top limiting section; 268. Second guide section; 27 , transformer baffle; 271, jack; 272, reset spring; 28, docking card; 281, third guide section; 282, wrapping section; 283, docking slot; 284, docking connector; 29, transformer slot; 291, second clamping column; 3, current transformer; 4, second side plate; 5, first side plate; 6, detection coil; 61, three groups of winding segments; 62, two groups of winding segments; 63, one group of winding segments; 7, plug Unit; 71, connecting column; 72, electrical elastic member; 721, first elastic piece; 7211, second elastic section; 7212, first elastic section; 7213, third connecting section; 722, electrical connecting piece; 7221, electrical docking section; 7222, hard section; 723, second elastic piece; 7231, fourth elastic section; 7232, third elastic section; 73, rubber strip; 74, electrical pole; 75, electrical ring.

[0040] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0041] The following describes in detail a current transformer production and testing device provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, to provide a more detailed description, the following embodiments are optimal and preferred embodiments, and those skilled in the art may employ alternative implementations for known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0042] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0043] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0044] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0045] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0046] like Figures 1 to 17As shown, an embodiment of the present invention provides a current transformer production and testing device, including a testing base 1, which is installed on a testing assembly line to test the produced current transformer 3. The top of the testing base 1 is provided with a first slide groove 11 having one end connected to the outside, and the first slide groove 11 is used to provide a sliding track for the sliding base 21. At the same time, the sliding base 21 slides on the first slide groove 11, and can correspondingly select the detection coil 6 to be tested. Three evenly distributed second slide grooves 12 are provided on one side of the first slide groove 11, and the inner wall of each second slide groove 12 is fixedly connected to a group of plug-in structures distributed vertically, and each group of plug-in structures consists of two plug-in units 7. Both ends of the detection coil 6 are connected to the external power supply. The three groups of plug-in structures are connected in parallel to the detection coil 6, so that the three groups of plug-in structures can independently control the closing of the detection coil 6. The second slide 12 corresponds to the detection coil 6. When detecting the current transformer 3, the second slide 12 can be selected according to the current ratio to be detected. The current transformer 3 is detected by cooperating with the plug-in unit 7 inside the second slide 12 through the sliding base 21, so as to detect whether the current transformer 3 meets the design requirements; the second side plate 4 and the first side plate 5 are fixedly connected to the top two ends of the detection base 1 respectively, and the second side plate 4 and the first side plate 5 are used to provide an installation position for the detection coil 6. The first side plate 5 is located on one side of the open end of the first slide 11, and the first side plate 5 is an L-shaped structure. The first side plate 5 of the type structure will not prevent the sliding base 21 from sliding into the first slide groove 11. A control switch is provided on one side of the first side plate 5, and the control switch is also used to control the connection and disconnection of the detection coil 6; a detection coil 6 is connected between the second side plate 4 and the first side plate 5, and the detection coil 6 is composed of three groups of winding segments 61, two groups of winding segments 62 and one group of winding segments 63 connected in sequence. The positions of the three groups of winding segments 61, the two groups of winding segments 62 and the one group of winding segments 63 correspond to the three second slide grooves 12 respectively, and the current ratio of the current transformer 3 is detected by the different numbers of winding coils of the three groups of winding segments 61, the two groups of winding segments 62 and the one group of winding segments 63; the limit detection device 2 is located at the bottom of the first slide groove 11, and the limit detection device 2 It is used to limit the current transformer 3 and cooperate with the detection base 1 to detect the current transformer 3. The limit detection device 2 is used to limit and fix the current transformer 3 to be detected. The limit detection device 2 can realize rapid fixation and rapid disassembly of the current transformer 3, which is convenient for the staff to disassemble the current transformer 3 and facilitate the detection of the next current transformer 3 to be detected. At the same time, the limit detection device 2 is used to cooperate with the detection base 1 and the detection coil 6 to realize the detection of the current ratio of the current transformer 3. The limit detection device 2 includes a sliding base 21 slidably connected to the bottom of the first slide groove 11; it also includes a power connection unit for realizing power connection between the sliding base 21 and the detection base 1.

[0047] like Figures 1 to 4As shown, the second slide groove 12 is connected to the first slide groove 11, the width of the first slide groove 11 is consistent with the length of the sliding base 21, the length of the second slide groove 12 is consistent with the width of the sliding base 21, and the height of the sliding base 21 is greater than the depth of the first slide groove 11; the first slide plate 13 and the second slide plate 14 are fixedly connected on both sides of the open end of the second slide groove 12, and the first slide plate 13 and the second slide plate 14 are consistent in size and structure. The first slide plate 13 and the second slide plate 14 are located at the connection position of the second slide groove 12 and the first slide groove 11, and the first slide plate 13 and the second slide plate 14 serve as rails to facilitate the sliding base 21 to slide in the first slide groove 11; the second slide plate 14 is fixedly connected in sequence by a first guide section 141, a sliding section 142 and a first connecting section 143, and the first connecting section 143 is fixedly connected to one side of the second slide groove 12, and both sides of the first connecting section 143 are opened. There is a weakened groove 144, the first guide section 141 is an inward-turned structure, the length of the second slide groove 12 is consistent with the sum of the length of the sliding base 21 and the height of the two sliding sections 142, and hidden grooves 121 are provided on both sides of the second slide groove 12, which are adapted to the first guide section 141; it also includes a positioning unit for positioning the sliding base 21; the positioning unit includes a release groove 145 provided on one side of the sliding section 142, and the release groove 145 is fixedly connected to the positioning piece 15 at one end near the first guide section 141; the positioning piece 15 is composed of a second connecting section 151, a first deforming section 152 and a positioning section 153 fixedly connected in sequence, one end of the second connecting section 151 is fixedly connected to one side of the release groove 145, and the first deforming section 152 is an outward-turned arc-shaped structure. When the positioning piece 15 is in the initial state, its surface is adapted to the surface of the sliding base 21 for positioning the sliding base 21.

[0048] When the current transformer 3 needs to be tested, the sliding base 21 needs to be inserted into the corresponding second slide groove 12, and the sliding base 21 needs to be slid on the first slide groove 11 until it slides to the first slide piece 13 and the second slide piece 14 on the corresponding second slide groove 12, until one side of the sliding base 21 is in contact with the positioning piece 15, and then the sliding base 21 is pushed toward the second slide groove 12. When pushing, the sliding base 21 will squeeze the sliding sections 142 on the first slide piece 13 and the second slide piece 14. When the sliding section 142 is squeezed by the sliding base 21, it will drive the sliding section 142 to deviate to the side of the second slide groove 12 under the action of the weakening groove 144, until the entire sliding section 142 is aligned with the second slide groove 12. The inner walls fit together, and the first guide section 141 is stuck in the hidden groove 121, so that the entire sliding base 21 enters the second sliding groove 12. When the detection is completed and the next current ratio detection is required, the sliding base 21 is pulled out until the first slide 13 and the second slide 14 return to their initial positions, pushing the sliding base 21 to slide in the direction of the next second sliding groove 12. During the sliding process, the sliding base 21 will squeeze the positioning section 153, so that the positioning section 153 enters the release groove 145 under the deformation of the first deformation section 152, thereby not affecting the sliding of the sliding base 21, until the entire sliding base 21 slides over the positioning piece 15, and the positioning section 153 returns to its initial position under the action of the first deformation section 152.

[0049] like Figure 2 、 Figure 7 、 Figure 8 and Figure 10As shown, a transformer slot 29 is provided on one side of the sliding base 21, and the transformer slot 29 is adapted to the size of the base of the current transformer 3 to be detected. Two second clamping columns 291 adapted to the bottom of the current transformer 3 are provided at the bottom of the transformer slot 29. The second clamping columns 291 are adapted to the base mounting holes of the current transformer 3 to be detected, so that when the current transformer 3 is inserted into the transformer slot 29, the second clamping columns 291 can limit the base of the current transformer 3 to prevent it from shaking, and at the same time will not affect the removal of the current transformer 3. The sliding base 21 is fixedly connected to the edge positions of the two long sides and one short side of the transformer slot 29 with a slide plate 211, a transformer baffle 27 and a rotating seat 212 respectively. The distance between the slide plate 211 and the transformer baffle 27 is consistent with the thickness of the current transformer 3. When the current transformer 3 needs to be inserted, the current transformer 3 is placed on the slide plate 21. 1, slide on it until it slides to fit with the transformer baffle 27, and then press the current transformer 3 vertically to snap the current transformer 3 into the transformer slot 29. At the same time, the base of the current transformer 3 is limited by the elastic card 26, so that the current transformer 3 is fixed on the sliding base 21. The transformer baffle 27 and the two terminal blocks on the current transformer 3 are connected with docking cards 28 at corresponding positions. The docking card 28 is electrically connected to the ammeter 23. When the current transformer 3 is inserted into the transformer slot 29, the two terminal blocks of the current transformer 3 are just snapped into the docking cards 28. Therefore, the conversion current of the current transformer 3 can be detected by the ammeter 23. The inner walls of the transformer slot 29 are respectively fixedly connected with mutually symmetrical elastic cards 26. An ammeter slot 213 is provided on the side of the sliding base 21 close to the rotating seat 212, and the ammeter slot 213 is fixedly connected with the ammeter 23.

[0050] like Figure 8 、 Figure 10 、 Figures 12 to 14As shown, the elastic card 26 is composed of a groove section 263, a rotating section 264, a side limit section 265, a second deformation section 266, a top limit section 267 and a second guide section 268 that are fixedly connected in sequence. One side of the rotating section 264 is rotatably connected to the inner wall of the mutual inductor slot 29 through a rotating shaft 262. A torsion spring is sleeved inside the rotating shaft 262. One end of the torsion spring fits with the surface of the rotating section 264, and the other end fits with the inner wall of the mutual inductor slot 29. When the elastic card 26 is in the initial position through the rotating shaft 262, the top of the rotating section 264 fits with the top of the mutual inductor slot 29, so that the entire elastic card 26 is in the initial position. The card 26 unfolds to both sides of the transformer slot 29; the slot-abutting section 263 fits against the inner wall of the transformer slot 29 in the working state, and the slot-abutting section 263 is used to fit and limit the side of the base of the current transformer 3. The rotating section 264 is a Z-shaped structure, the side limit section 265 is parallel to the slot-abutting section 263, and the second deformation section 266 is a quarter-circular arc structure, and its thickness gradually changes from thin to thick from the middle to the two ends. The top limit section 267 and the side limit section 265 are arranged perpendicular to each other. The top limit section 267 is used to fit and limit the top of the base of the current transformer 3, and the second guide section 268 is an outward-turned structure.

[0051] When the current transformer 3 slides along the slide plate 211 until the transformer baffle 27 is in contact, the base of the current transformer 3 is just located on the second guide section 268 of the two elastic cards 26. Since the second guide section 268 is an outward-turned structure, when the current transformer 3 is pressed, the base of the current transformer 3 will squeeze the second guide section 268, so that after the second guide section 268 is squeezed, it slides along the edge of the base of the current transformer 3 under the deformation of the second deformation section 266 until the current transformer 3 is in contact with the second guide section 268. The base of the current transformer 3 slides under the second guide section 268 and contacts the groove section 263, and then continues to press the current transformer 3 downward. The base of the current transformer 3 will drive the groove section 263 to deflect until the groove section 263 deflects and fits into the transformer groove 29. Then, as the base of the current transformer 3 descends, the second guide section 268 slides to the top of the base of the current transformer 3, and then fits into the top of the base of the current transformer 3 under the action of the second deformation section 266 restoring the deformation.

[0052] like Figures 7 to 10 As shown, a rotating plate 24 is rotatably connected to the rotating seat 212, and a rotating shaft is fixedly connected to the bottom end of the rotating plate 24. The rotating shaft is rotatably connected to the rotating seat 212, and a clamping plate 25 is connected to one side of the rotating plate 24. The clamping plate 25 is used to fix the upper and lower shells of the current transformer 3; the clamping plate 25 includes a U-shaped section 251 fixedly connected to one side of the rotating plate 24. The U-shaped section 251 is the existing technology, and its two ends have a clamping force. The two ends of the U-shaped section 251 are fixedly connected to the clamping sections 252, and the outer sides of the two clamping sections 252 are outward-turned structures.

[0053] When the current transformer 3 with the upper and lower shells not closed is moved to the bottom of the detection coil 6, the upper shell is rotated so that the upper shell passes through the detection coil 6 and fits with the lower shell. Then the rotating plate 24 is rotated so that the clamping plate 25 on the rotating plate 24 is aligned between the upper and lower shells. The upper and lower shells are clamped and fixed by the two clamping sections 252. Therefore, during the process of detecting the current ratio, the upper and lower shells of the current transformer 3 are always in a closed state. At the same time, when the detection is completed, the rotating plate 24 is directly rotated to cancel the limit of the upper and lower shells of the current transformer 3 by the clamping plate 25.

[0054] like Figure 10 、 Figures 15 to 17 As shown, the transformer baffle 27 is provided with a socket 271 on one side corresponding to the docking card 28, and a reset spring 272 is fixedly connected to the bottom of the socket 271. A plug rod is fixedly connected to the bottom of the socket 271, and the plug rod extends through the socket 271 to the top of the transformer baffle 27. The reset spring 272 is sleeved on the outer wall of the plug rod, and one end of the reset spring 272 is fixed to the bottom of the socket 271, and the other end is fixedly connected to the bottom of the wrapping section 282; the docking card 28 is connected by a wrapping section 282 and two third guide sections 281, and the two ends of the wrapping section 282 are fixedly connected to each other. The two symmetrical third guide sections 281 and the wrapping section 282 are three-quarter circular structures. The inner surface wall of the wrapping section 282 is provided with a docking groove 283, which penetrates the wrapping section 282. A docking connector 284 is nested and fixed inside the docking groove 283. When the current transformer 3 is inserted into the transformer slot 29, the terminal of the current transformer 3 squeezes the two third guide sections 281 open until the terminal is stuck into the interior of the wrapping section 282 and fits with the surface of the docking connector 284. The terminal of the current transformer 3 is electrically connected to the ammeter 23 through the two docking connectors 284.

[0055] like Figure 2 、 Figures 5 to 7 and Figure 11As shown, the power connection unit includes two power connection limit holes 22 opened on one side of the sliding base 21, the positions of the two power connection limit holes 22 correspond to the plug-in unit 7, and the sliding base 21 is provided with a power connection groove 221 near the power connection limit hole 22. The two power connection grooves 221 are connected by a copper sheet; the plug-in unit 7 includes a connecting column 71 fixedly connected to the surface wall of the second slide groove 12, and the connecting column 71 is used to provide an installation position for the power connection elastic member 72. A power connection rod 74 is fixedly connected to the center position of one side of the connecting column 71. The power connection rod 74 is used to provide an installation position for the power connection ring 75. The outer wall of the power connection rod 74 is fixedly connected to the power connection ring 75, and the surface wall of the power connection ring 75 is opened. There is an annular inner groove, and one side of the connecting column 71 is fixedly connected to a plurality of power-connecting elastic members 72 evenly distributed in an annular shape. The power-connecting elastic members 72 are used to generate deformation and be inserted into the power-connecting slot 221 to realize the connection between the two plug-in units 7. A rubber strip 73 is fixedly connected between each two power-connecting elastic members 72. The rubber strip 73 has good ductility and can close the gap between each two power-connecting elastic members 72. The shape of the power-connecting slot 221 is consistent with the shape of the plurality of power-connecting elastic members 72 distributed in an annular shape, and the outer dimensions of the power-connecting slot 221 are slightly smaller than the outer dimensions of the plurality of power-connecting elastic members 72 distributed in an annular shape. The power-connecting elastic member 72 is composed of a first elastic piece 721 and a power-connecting connecting piece 721. 22 and the second elastic piece 723 are connected in sequence, the electrical connection piece 722 is a V-shaped structure, and the two ends of the electrical connection piece 722 are fixedly connected to the first elastic piece 721 and the second elastic piece 723 respectively; the second elastic piece 723 is fixedly connected by the fourth elastic segment 7231 and the third elastic segment 7232 in sequence, the electrical connection piece 722 is fixedly connected by two hard segments 7222 and an electrical docking segment 7221, and the first elastic piece 721 is fixedly connected by the second elastic segment 7211, the first elastic segment 7212 and the third connecting segment 7213 in sequence; one end of the fourth elastic segment 7231 and one end of the fourth elastic segment 7231 are fixedly connected to the connecting column 71 One side is fixedly connected, one end of the third elastic section 7232 away from the fourth elastic section 7231 is fixedly connected to one end of the rigid section 7222, one end of the third connecting section 7213 is fixedly connected to one end of the power connection pole 74, one end of the second elastic section 7211 away from the first elastic section 7212 is fixedly connected to one end of the rigid section 7222, and the two rigid sections 7222 are respectively fixedly connected to the two ends of the power connection docking section 7221, and the structure of the third elastic section 7232 is consistent with that of the second elastic section 7211. The end of the third elastic section 7232 close to the fourth elastic section 7231 is a convex structure, and the end of the third elastic section 7232 close to the rigid section 7222 is a concave structure.

[0056] When detecting the current ratio of the current transformer 3, the detection coil 6 needs to be electrically connected during the detection. The two plug-in units 7 can be electrically connected through the two power connection slots 221, so that the connection and disconnection of the detection coil 6 can be controlled by the two power connection slots 221 and the two plug-in units 7 as switches. During the detection, the sliding base 21 is pushed to slide on the second slide slot 12. During the sliding process, the connection position of the third connecting segment 7213 and the first elastic segment 7212 is inserted into the power connection limit hole 22. During the continuous insertion process, the first elastic segment 7212 is compressed and deformed under the extrusion of the power connection limit hole 22. When the first elastic segment 7212 is compressed and deformed, it will drive the hard segment 7222 to deflect, thereby driving the fourth elastic segment 7231 inward through the hard segment 7222 on the other side. The third elastic section 7232 is squeezed into the power connection groove 221 by the power connection limit hole 22, and the fourth elastic section 7231 is squeezed into the inner wall of the power connection groove 221 by the power connection limit hole 22, so that the entire power connection elastic member 72 is fitted with the inner wall of the power connection groove 221. At the same time, since the delay of the power connection groove 221 is smaller than the size of the power connection elastic member 72, the inner wall of the power connection groove 221 will squeeze the power connection elastic member 72, so that the power connection docking section 7221 is fitted with the power connection ring 75. The two power connection grooves 221 are electrically connected through the corresponding power connection docking sections 7221 and the power connection ring 75, and then the detection coil 6 is connected through the copper sheet between the two power connection grooves 221.

[0057] The working principle of the technical solution provided by the present invention is as follows: when the current ratio of the current transformer 3 to be detected is detected, the current transformer 3 is first inserted into the limit detection device 2, and the current transformer 3 slides along the slide 211 until the transformer baffle 27 is in contact with it. The base of the current transformer 3 is just located on the second guide section 268 of the two elastic cards 26. Since the second guide section 268 is an outward-turned structure, when the current transformer 3 is pressed, the base of the current transformer 3 will squeeze the second guide section 268, so that after the second guide section 268 is squeezed, the second guide section 268 is in the second shape. Under the deformation of the variable section 266, it slides along the edge of the base of the current transformer 3 until the base of the current transformer 3 slides under the second guide section 268 and contacts the groove section 263, and then continues to press the current transformer 3 downward. The base of the current transformer 3 will drive the groove section 263 to deflect until the groove section 263 deflects and fits into the transformer groove 29. Then, as the base of the current transformer 3 descends, the second guide section 268 slides to the top of the base of the current transformer 3, and then fits into the top of the base of the current transformer 3 under the action of the second deformation section 266 to restore the deformation.

[0058] When the current transformer 3 is inserted into the transformer slot 29, the terminal of the current transformer 3 squeezes the two third guide sections 281 apart until the terminal is inserted into the interior of the wrapping section 282 and fits into the surface of the docking terminal 284. The terminal of the current transformer 3 is electrically connected to the ammeter 23 through the two docking terminal sheets 284.

[0059] When the current transformer 3 needs to be tested, the sliding base 21 needs to be inserted into the corresponding second slide groove 12, and the sliding base 21 needs to be slid on the first slide groove 11 until it slides to the first slide 13 and the second slide 14 on the corresponding second slide groove 12, until one side of the sliding base 21 is in contact with the positioning piece 15. When the current transformer 3 with the upper and lower shells not closed is moved to the bottom of the detection coil 6, the upper shell is rotated so that the upper shell passes through the detection coil 6 and is in contact with the lower shell. Then, the rotating plate 24 is rotated so that the clamping plate 25 on the rotating plate 24 is aligned between the upper and lower shells, and the upper and lower shells are clamped and fixed by the two clamping sections 252, so that the upper and lower shells of the current transformer 3 are always in a closed state during the process of detecting the current ratio.

[0060] Then the sliding base 21 is pushed toward the second slide groove 12. When pushing, the sliding base 21 will squeeze the sliding section 142 on the first slide plate 13 and the second slide plate 14. When the sliding section 142 is squeezed by the sliding base 21, it will drive the sliding section 142 to deviate to the side of the second slide groove 12 under the action of the weakened groove 144 until the entire sliding section 142 fits against the inner wall of the second slide groove 12. At the same time, the first guide section 141 is stuck in the hidden groove 121, so that the entire sliding base 21 enters the second slide groove 12.

[0061] The sliding base 21 is pushed to slide on the second sliding groove 12. During the sliding process, the third connecting section 7213 and the first elastic section 7212 are inserted into the power connection limit hole 22 at the connection position. During the continuous insertion process, the first elastic section 7212 is compressed and deformed under the extrusion of the power connection limit hole 22. When the first elastic section 7212 is compressed and deformed, it will drive the hard section 7222 to deflect, thereby driving the fourth elastic section 7231 to deflect inward through the hard section 7222 on the other side until the power connection limit hole 22 contacts the third elastic section 7232. The third elastic section 7232 enters the power connection slot 221 under the extrusion of the power connection limit hole 22 until the third elastic section 7232 is pressed by the power connection limit hole 22. The four elastic sections 7231 enter the inner wall of the power connection slot 221 under the pressure of the power connection limit hole 22, so that the entire power connection elastic member 72 fits against the inner wall of the power connection slot 221. At the same time, since the delay of the power connection slot 221 is smaller than the size of the power connection elastic member 72, the inner wall of the power connection slot 221 will squeeze the power connection elastic member 72, so that the power connection docking section 7221 fits against the power connection ring 75. The two power connection slots 221 are electrically connected through the corresponding power connection docking sections 7221 and the power connection ring 75. When the power connection slot 221 connects the entire detection coil 6, the ammeter 23 is used to measure the degree, thereby judging whether the current transformer 3 meets the production requirements.

[0062] When the detection is completed and the next current ratio detection is required, the sliding base 21 is pulled out until the first slide 13 and the second slide 14 return to their initial positions, and the sliding base 21 is pushed to slide in the direction of the next second slide groove 12. During the sliding process, the sliding base 21 will squeeze the positioning section 153, so that the positioning section 153 enters the release groove 145 under the deformation of the first deformation section 152, thereby not affecting the sliding of the sliding base 21, until the entire sliding base 21 slides over the positioning piece 15, and the positioning section 153 returns to its initial position under the action of the first deformation section 152, and the above operation is repeated.

[0063] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A current transformer production and testing equipment, characterized in that: The detection base comprises a detection base, wherein a first chute is formed on the top of the detection base, one end of which is connected to the outside, and three second chute are formed on one side of the first chute, and a group of plug-in structures distributed vertically are fixedly connected to the inner wall of each second chute, and each group of the plug-in structures is composed of two plug-in units; A first sliding plate and a second sliding plate are fixedly connected to the two sides of the opening end of the second sliding groove, and the second sliding plate is formed by fixing a first guide section, a sliding section and a first connecting section in sequence; The plug-in unit includes a connecting column fixedly connected to the surface wall of the second chute, a power connection rod fixedly connected to the center position of one side of the connecting column, a power connection ring fixedly connected to the outer wall of the power connection rod, and a plurality of power connection elastic members evenly distributed in a ring shape fixedly connected to one side of the connecting column, and a rubber strip fixedly connected between every two of the power connection elastic members; The second side plate and the first side plate are fixedly connected to the top ends of the detection base respectively, and a detection coil is connected between the second side plate and the first side plate; a position limit detection device, located at the bottom of the first chute, the position limit detection device being used to limit the current transformer and simultaneously cooperate with the detection base to detect the current transformer, the position limit detection device comprising a sliding base slidably connected to the bottom of the first chute; A transformer slot is provided on one side of the sliding base, and two second clamping columns adapted to the bottom of the current transformer are provided at the bottom of the transformer slot. The sliding base is fixedly connected to a slide plate, a transformer baffle and a rotating base at edge positions close to two long sides and one short side of the transformer slot, respectively. The transformer baffle is connected to docking cards at positions corresponding to the two terminal ends on the current transformer, and mutually symmetrical elastic cards are fixedly connected to the two ends of the inner wall of the transformer slot. An ammeter slot is provided on one side of the sliding base close to the rotating base, and an ammeter is fixedly connected to the ammeter slot; Also included is a positioning unit for positioning the sliding base; The positioning unit includes a release groove formed on one side of the sliding section, and a positioning piece is fixedly connected to one end of the release groove close to the first guide section; It also includes a power connection unit for realizing power connection between the sliding base and the detection base; The power connection unit includes two power connection limit holes opened on one side of the sliding base. The positions of the two power connection limit holes correspond to the plug-in unit. The sliding base is provided with a power connection groove near the power connection limit holes.

2. The current transformer production and testing equipment according to claim 1, characterized in that: The first side plate is located on one side of the opening end of the first chute, and the first side plate is an L-shaped structure, and a control switch is provided on one side of the first side plate; The detection coil is formed by sequentially connecting three groups of winding segments, two groups of winding segments and one group of winding segments, and the positions of the three groups of winding segments, two groups of winding segments and one group of winding segments respectively correspond to the three second chutes.

3. The current transformer production and testing equipment according to claim 1, characterized in that: The second chute is connected to the first chute; The first sliding sheet and the second sliding sheet are consistent in size and structure; The first connecting section is fixedly connected to one side of the second slide groove, weakened grooves are provided on both sides of the first connecting section, the first guide section is an inward-turned structure, the length of the second slide groove is consistent with the sum of the length of the sliding base and the height of the two sliding sections, hidden grooves are provided on both sides of the second slide groove, and the hidden grooves are adapted to the first guide section.

4. The current transformer production and testing equipment according to claim 3, characterized in that: The positioning piece is formed by the second connecting section, the first deformation section and the positioning section being fixedly connected in sequence. One end of the second connecting section is fixedly connected to one side of the release groove. The first deformation section is an outward-turned arc structure. When the positioning piece is in the initial state, its surface is adapted to the surface of the sliding base for positioning the sliding base.

5. The current transformer production and testing equipment according to claim 1, characterized in that: The elastic card is composed of a groove-supporting section, a rotating section, a side limit section, a second deformation section, a top limit section, and a second guide section, which are fixedly connected in sequence. One side of the rotating section is rotatably connected to the inner wall of the mutual inductor slot via a rotating shaft. The groove-abutting section fits with the inner wall of the transformer groove in the working state, the rotating section is a Z-shaped structure, the side limit section and the groove-abutting section are parallel to each other, the second deformation section is a quarter-circular arc structure, and its thickness gradually changes from thin to thick from the middle to the two ends, the top limit section and the side limit section are arranged perpendicular to each other, and the second guide section is an outward-turned structure.

6. The current transformer production and testing equipment according to claim 1, characterized in that: A rotating plate is rotatably connected to the rotating seat, and a clamping plate is connected to one side of the rotating plate, and the clamping plate is used to fix the upper and lower shells of the current transformer; The clamping plate includes a U-shaped section fixedly connected to one side of the rotating plate, and both ends of the U-shaped section are fixedly connected with clamping sections.

7. The current transformer production and testing equipment according to claim 1, characterized in that: A socket is provided on one side of the mutual inductor baffle corresponding to the docking card, and a reset spring is fixedly connected to the bottom of the socket; The docking card is composed of a wrapping segment and two third guide segments. Two third guide segments are fixedly connected at both ends of the wrapping segment to form a symmetrical structure. The wrapping segment is a three-quarter ring structure. The inner surface wall of the wrapping segment is provided with a docking groove. A docking connector is nested and fixed inside the docking groove.

8. The current transformer production and testing equipment according to claim 1, characterized in that: The shape of the power connection slot is consistent with the shape of the plurality of power connection elastic members distributed in a ring shape, and the outer dimensions of the power connection slot are slightly smaller than the outer dimensions of the plurality of power connection elastic members distributed in a ring shape.

9. The current transformer production and testing equipment according to claim 8, characterized in that: The electrical connection elastic member is formed by sequentially connecting a first elastic piece, an electrical connection piece, and a second elastic piece. The electrical connection piece is a V-shaped structure, and the two ends of the electrical connection piece are fixedly connected to the first elastic piece and the second elastic piece respectively. The second elastic piece is formed by the fourth elastic segment and the third elastic segment being fixedly connected in sequence, the electrical connection piece is formed by two rigid segments and an electrical connection segment being fixedly connected in sequence, and the first elastic piece is formed by the second elastic segment, the first elastic segment and the third connection segment being fixedly connected in sequence; One end of the fourth elastic section and one end of the fourth elastic section are fixedly connected to one side of the connecting column, one end of the third elastic section away from the fourth elastic section is fixedly connected to one end of the hard section, one end of the third connecting section is fixedly connected to one end of the power connection pole, one end of the second elastic section away from the first elastic section is fixedly connected to one end of the hard section, and the two hard sections are respectively fixedly connected to the two ends of the power connection docking section. The structure of the third elastic section is consistent with that of the second elastic section. The end of the third elastic section close to the fourth elastic section is a convex structure, and the end of the third elastic section close to the hard section is a concave structure.

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