Magnetic core performance detection device

Abstract

The invention relates to a magnetic core performance detection device, belongs to the technical field of magnetic core detection, and solves the problems of low efficiency and poor accuracy of magnetic core performance detection in the prior art. The device comprises a workbench, a connecting interface, a propelling body, a fixing body, a feeding part and a positioning sliding block, the positioning slide block is used for fixing a magnetic core to be detected; the pushing body and the fixing body are arranged on the two sides of the positioning sliding block respectively, the pushing body comprises a pushing rod, and the end of the pushing rod can penetrate through the middle of the magnetic core to abut against the end of the fixing body; the feeding component can drive the pushing rod to move back and forth in the direction towards or away from the fixed body. The number of the connecting interfaces is at least two, the first interface is electrically connected with the pushing rod, and the second interface is electrically connected with the fixing body. By accurately positioning the relative position of the magnetic core and the pushing rod, the pushing rod penetrating through the magnetic core can be always located at the central position of the magnetic core, so that the detection accuracy and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic core detection, and in particular to a magnetic core performance detection device. Background Art

[0002] As the core component of the transformer coil, the accuracy and consistency of the performance indicators of the magnetic core have an important impact on the conversion efficiency, power factor and line loss of the transformer product. Therefore, the inductance performance of the magnetic core needs to be tested many times during production and use. In the traditional testing process, a metal conductor is usually passed through the magnetic core and clamped at both ends with a clip to form a closed loop with the tester for testing. Since the entire process is performed manually, the test time is relatively long. At the same time, the uncertainty of the relative position of the magnetic core and the metal conductor will also cause a certain deviation in the test value. In addition, the connection between the traditional detection device and the tester is unstable, and the reliability of signal transmission is poor, which further affects the accuracy of the test. Summary of the invention

[0003] In view of the above analysis, the present invention provides a magnetic core performance detection device to solve the problems of low efficiency and poor accuracy in magnetic core performance detection in the prior art.

[0004] A magnetic core performance detection device of the present invention comprises a workbench and a connection interface, a propulsion body, a fixed body, a feeding component and a positioning slider fixedly arranged on the workbench; the positioning slider is movably arranged in the middle of the upper surface of the workbench, and is used to fix the magnetic core to be detected; the propulsion body and the fixed body are respectively arranged on both sides of the positioning slider, and the propulsion body comprises a propulsion rod, and the end of the propulsion rod facing the fixed body can pass through the middle of the magnetic core and abut against the end of the fixed body facing the propulsion body; the feeding component is arranged on the side of the propulsion body away from the positioning slider, and can drive the propulsion rod to reciprocate in a direction toward or away from the fixed body; the connection interface comprises at least a first interface and a second interface, wherein the first interface is electrically connected to the propulsion rod, and the second interface is electrically connected to the fixed body.

[0005] Furthermore, the connection interface includes a connection shell.

[0006] Furthermore, a plurality of locking grooves are evenly distributed on the circumference of the outer surface of the connection shell, and the locking grooves are used to be locked and fixedly connected with the ports of the transformer tester.

[0007] Furthermore, the connection interface also includes a connection pin and a first insulator.

[0008] Furthermore, the connecting pin is installed in the first insulator, and the first insulator is arranged inside the connecting shell.

[0009] Furthermore, the propulsion body also includes a propulsion shell, a propulsion adapter and a propulsion insulator.

[0010] Furthermore, the propulsion shell is fixedly arranged on the workbench, the propulsion insulator is fixedly arranged in the propulsion shell, the propulsion adapter is reciprocatably arranged in the propulsion insulator, and one end of the propulsion adapter is electrically connected to the propulsion rod.

[0011] Furthermore, the propulsion body also includes a propulsion elastic connecting tube and a propulsion pin.

[0012] Furthermore, the middle portion of the propulsion adapter is electrically connected to one end of the propulsion elastic connecting tube, and the other end of the propulsion elastic connecting tube is electrically connected to the propulsion pin.

[0013] Furthermore, the propulsion body further comprises a propulsion insulator, one end of the propulsion insulator is fixedly connected to an end of the propulsion adapter away from the propulsion rod, and the other end of the propulsion insulator is fixedly connected to the feeding component.

[0014] Furthermore, the feeding component includes a push rod, a push handle, a spring and a feeding seat.

[0015] Furthermore, the feed seat is fixedly arranged on the workbench, one end of the push handle is fixedly arranged on the workbench, one end of the push rod passes through the first push rod through hole on the feed seat, and the other end of the push rod passes through the second push rod through hole on the push handle, the spring is sleeved on the push rod, the push handle can drive the push rod to move in the direction away from the fixed body, and the spring can push the push rod to move in the direction close to the fixed body.

[0016] Furthermore, the fixed body includes a fixed rod, a fixed shell, a fixed adapter, a fixed insulator, a fixed insulator, a fixed elastic connecting tube and a fixed pin.

[0017] Furthermore, the fixed shell is fixedly arranged on the workbench, the fixed insulator is arranged in the fixed shell, and the fixed adapter is arranged in the fixed insulator; one end of the fixed adapter is electrically connected to the fixed rod, the middle part of the fixed adapter is electrically connected to the fixed elastic connecting tube and the fixed pin, and the fixed insulator is arranged between the fixed elastic connecting tube and the fixed shell.

[0018] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0019] (1) The present invention accurately locates the position of the magnetic core by using a positioning slider. By providing a propulsion body and making the propulsion rod reciprocate along a fixed path, the propulsion rod passing through the magnetic core can be kept at the center of the magnetic core at all times, thus breaking through the limitation of the large error of the traditional magnetic core inductance test and eliminating the error of the measuring device itself.

[0020] (2) The present invention adopts an interface locking slide groove structure to ensure a stable connection with the transformer tester interface and improve the reliability of signal transmission.

[0021] (3) In the present invention, the front ends of the propulsion pin and the fixed pin are respectively matched and connected with the propulsion elastic connecting tube and the fixed elastic connecting tube. The larger elastic deformation of the elastic connecting tube makes the contact more firm and the contact resistance smaller. At the same time, it has good impact resistance, ensuring that the high-frequency reciprocating motion of the propulsion body will not affect the measurement accuracy.

[0022] (4) The feeding component of the present invention adopts a spring-propelled structure, making the operation simpler and more efficient.

[0023] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0025] Figure 1 is a structural schematic diagram of Embodiment 1 of the magnetic core performance detection device of the present invention;

[0026] Figure 2 is a structural exploded diagram of the connection interface of the present invention;

[0027] Figure 3 is a structural exploded diagram of the propulsion body of the present invention;

[0028] Figure 4 is a structural exploded diagram of the fixing body of the present invention;

[0029] Figure 5 It is a structural exploded diagram of the feeding component of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the positioning slider of the present invention;

[0031] Figure 7is a schematic structural diagram of a workbench of Embodiment 1 of the present invention;

[0032] Figure 8a , 8b 8a is a schematic diagram of the structure of the connection housing of the present invention, wherein 8a is a main view and 8b is a cross-sectional view;

[0033] Fig. 9 It is a structural schematic diagram of the connection tail cover of the present invention;

[0034] Fig.10 is a cross-sectional schematic diagram of a propulsion housing of the present invention;

[0035] Fig.11 is a cross-sectional schematic diagram of the propulsion adapter of the present invention;

[0036] Fig.12 is a schematic cross-sectional view of a propulsion insulator of the present invention;

[0037] Fig.13 is a schematic cross-sectional view of a propulsion insulator of the present invention;

[0038] Fig.14 is a cross-sectional schematic diagram of a fixed housing of the present invention;

[0039] Fig.15 is a cross-sectional schematic diagram of a fixed adapter of the present invention;

[0040] Fig.16 is a cross-sectional schematic diagram of a fixed insulator of the present invention;

[0041] Fig.17 is a cross-sectional schematic diagram of the push pin / fixing pin of the present invention;

[0042] Fig.18 It is a cross-sectional schematic diagram of the propulsion elastic connecting tube / fixed elastic connecting tube of the present invention;

[0043] Fig.19 is a structural schematic diagram of Embodiment 2 of the magnetic core performance detection device of the present invention;

[0044] Fig. 20 is a schematic structural diagram of a workbench of Embodiment 2 of the present invention;

[0045] Fig.21 is a schematic structural diagram of a protective cover according to Embodiment 2 of the present invention;

[0046] Fig. 22 is a structural schematic diagram of a positioning slider according to Embodiment 2 of the present invention;

[0047] Fig.23 It is a schematic structural diagram of a positioning block according to Embodiment 2 of the present invention.

[0048] Reference numerals:

[0049] 1-connection interface; 11-connection housing; 111-locking slide groove; 112-knurling; 113-circlip groove; 12-circlip; 13-connection pin; 14-first insulator; 15-first elastic connection tube; 16-connection tail cover; 161-circlip shoulder; 162-fixing thread; 2-propelling body; 21-propelling rod; 211-propelling rod front section; 22-propelling housing; 221-first fixing hole; 222-second long groove; 223-first inner cavity; 224-outer peripheral plane of the propulsion housing; 225-transition section; 226-propelling front end; 23-propelling adapter; 231-propelling rod connection cavity; 232-insulator connection cavity; 233-middle cavity; 234-first step; 235-second step ;236-push elastic connecting tube connection cavity;237-outer peripheral surface;24-push insulator;241-first cavity;242-second cavity;243-step;244-third long groove;245-outer surface;25-push insulator;251-front section of insulator;252-rear section of insulator;253-push rod connection cavity;26-push elastic connecting tube;261-first slot;27-push pin;271-first wire connection cavity;272-rear section of push pin;273-push pin shoulder;274-front section of push pin;275-push pin end;3-fixed body;31-fixed rod;311-baffle;32-fixed shell;321-second fixed hole;322-first through hole ;323-second inner cavity;324-installation section;325-connection section;326-fixed front end;33-fixed adapter;331-fixed adapter outer interface;332-fourth inner cavity;333-third through hole;34-fixed insulator;341-fixed insulator outer interface;342-third inner cavity;343-second through hole;35-fixed insulator;36-fixed elastic connecting tube;37-fixed plug pin;371-second wire connection cavity;372-fixed plug pin rear section;373-fixed plug pin shoulder;374-fixed plug pin front section;375-fixed plug pin end;4-feeding component;41-push rod;411-limiting ring;412-push rod front section;413-push rod rear section;42-push handle; 421-bending part; 422-second push rod through hole; 423-push handle mounting hole; 43-spring; 44-feed seat; 441-first push rod through hole; 442-feed seat mounting hole; 5-positioning slider; 51-core placement groove; 52-slide groove; 53-positioning card slot; 6-workbench; 61-first hole; 62-second hole; 63-first long groove; 64-third hole; 65-fourth hole; 66-fifth hole; 67-sixth hole; 68-seventh hole; 69-slide rail; 610-block slide groove; 611-protective cover positioning groove; 7-protective cover; 71-top cover; 711-locking plate; 72-first side wall; 73-second side wall; 74-hinge; 8-positioning card block; 81-sliding end; 82-clamping end. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0051] Example 1

[0052] The magnetic core performance detection device in the present invention refers to a detection device for the magnetic core inductance performance based on a transformer tester. The described examples are only part of the embodiments of the present invention, not all of the embodiments. The present invention can be explained in detail through the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0053] like Figure 1 As shown, the magnetic core performance detection device includes a workbench 6, and a connection interface 1, a propulsion body 2, a fixed body 3, a feeding component 4 and a positioning slider 5 fixed on the workbench 6. Among them, there are four connection interfaces 1, two of which are electrically connected to the propulsion body 2, and the other two are electrically connected to the fixed body 3. At the same time, the other end of the first interface is connected to the positive pole of the transformer tester, and the other end of the second interface is connected to the negative pole of the transformer tester. The magnetic core to be tested is set in the magnetic core placement groove 51 on the positioning slider 5 located between the propulsion body 2 and the fixed body 3. The front section 211 of the propulsion rod 21 of the propulsion body 2 passes through the center of the magnetic core and contacts the baffle 311 of the fixed rod 31 to form a closed loop, and the magnetic core performance test can be performed through the transformer tester. The feeding component 4 is used to drive the propulsion rod 21 in the propulsion body 2 to move back and forth to facilitate loading and unloading of the magnetic core. The positioning slider 5 is used to fix the magnetic core.

[0054] The structure of the workbench 6 is as follows Figure 7 As shown, the workbench 6 is a rectangular box-shaped structure, the inside of the box is used to accommodate the wire, and the outer surface of the box body is used to set the connection interface 1, the propulsion body 2, the fixed body 3, the feeding component 4 and the positioning slider 5. Among them, the connection interface 1 is set on the side of the workbench 6, and the propulsion body 2, the fixed body 3, the feeding component 4 and the positioning slider 5 are set on the top surface of the workbench 6.

[0055] Specifically, two first holes 61 and two second holes 62 are formed on the side of the workbench 6. The first holes 61 and the second holes 62 are of the same size, and a connection interface 1 is fixedly disposed in each hole. A slide rail 69 extending in the width direction is disposed in the middle of the top surface of the workbench 6, and is used to slide with the positioning slider 5 to place the magnetic core and align the center.

[0056] The top surface of the workbench 6 is also provided with two third holes 64 for fixing the propulsion housing 22 of the propulsion body 2. A first long slot 63 is provided between the two third holes 64, through which the propulsion elastic connecting tube 26 passes to connect with the propulsion adapter 23 of the propulsion body 2, and the propulsion elastic connecting tube 26 can move back and forth along the first long slot 63 with the propulsion adapter 23. Two sixth holes 67 are provided outside the third holes 64 for fixing the feed seat 44 of the feed component 4. A seventh hole 68 is provided beside the third hole 64 and the sixth hole 67 for fixing the push handle 42 of the feed component 4.

[0057] The top of the workbench 6 is also provided with two fifth holes 66 for fixing the fixed housing 32 of the fixed body 3. A fourth hole 65 is provided between the two fifth holes 66, and the fixed elastic connecting tube 36 passes through the fourth hole 65 to connect with the fixed adapter 33 of the fixed body 3.

[0058] The connection pin 13 of the connection interface 1 fixed in the first hole 61 is connected to the propulsion pin 27 of the propulsion body 2 through a wire, and the other end of the propulsion pin 27 is inserted into the propulsion elastic connection tube 26. The connection pin 13 of the connection interface 1 fixed in the second hole 62 is connected to the fixed pin 37 of the fixed body 3 through a wire, and the other end of the fixed pin 37 is inserted into the fixed elastic connection tube 36.

[0059] The connection interface 1, the propulsion body 2, the fixing body 3, the feeding component 4, and the positioning slide block 5 are connected in position through the workbench 6, and then the accuracy and reliability of signal transmission are achieved through the wires inside.

[0060] like Figure 2 As shown, the connection interface 1 includes a connection housing 11 , a clamping spring 12 , a connection pin 13 , a first insulator 14 , a first elastic connection tube 15 and a connection tail cover 16 which are sequentially arranged axially.

[0061] The structure of the connecting housing 11 is as follows Figure 8a , 8b As shown, the outer surface of the connection housing 11 is provided with four locking grooves 111 in the circumferential direction, and the connection is fixedly connected with the port of the transformer tester through the locking grooves 111. At the same time, the connection housing 11 is provided with a knurling 112 for easy rotation. The connection housing 11 is provided with a retaining spring groove 113 inside, and the retaining spring groove 113 accommodates the retaining spring 12, and the connection housing 11 and the connection tail cover 16 are connected through the retaining spring 12. The transformer tester involved in the present invention is a general device with a standard port, which will not be further described here.

[0062] The structure of the connection tail cover 16 is as follows Fig. 9As shown, the outer circumference of the connecting tail cover 16 is provided with a circlip shoulder 161 and a fixing thread 162, wherein the circlip shoulder 161 cooperates with the circlip 12, so that one end of the connecting tail cover 16 is fixed in the connecting housing 11. The fixing thread 162 can be fixed with the internal threads of the first hole 61 and the second hole 62 on the workbench 6.

[0063] The connecting pin 13 is installed in the first insulator 14, and the first insulator 14 is arranged inside the first elastic connecting tube 15. The connecting pin 13 and the first elastic connecting tube 15 are insulated by the first insulator 14. The first elastic connecting tube 15 is fixed inside the connecting tail cover 16. The connecting shell 11 is connected to the connecting tail cover 16 through the retaining spring 12. One end of the connecting pin 13 facing the inside of the workbench 6 is connected to the transmission wire, and the other end of the connecting pin 13 is connected to the transformer tester to realize signal transmission between the detection device and the transformer tester.

[0064] The structure of the propulsion body 2 is as follows: Figure 3 As shown, the propulsion body 2 includes a propulsion rod 21, a propulsion shell 22, a propulsion adapter 23, a propulsion insulator 24, a propulsion insulator 25, a propulsion elastic connecting tube 26 and a propulsion pin 27. The propulsion shell 22 is fixed on the workbench 6, the propulsion insulator 24 is fixedly arranged in the propulsion shell 22, the propulsion adapter 23 is slidably arranged in the propulsion insulator 24, and one end of the propulsion adapter 23 is fixedly connected to the propulsion rod 21, and the other end is fixedly connected to the propulsion insulator 25. One end of the propulsion elastic connecting tube 26 passes through the long grooves on the propulsion shell 22 and the propulsion insulator 24 and is fixedly connected to the middle part of the propulsion adapter 23, and the other end of the propulsion elastic connecting tube 26 is fixedly connected to the propulsion pin 27. The tail of the propulsion pin 27 adopts a wire crimping hole to crimp with the wire, which is firmly connected and realizes stable signal transmission. The wire is connected to the connecting pin 13 fixed in the first hole 61 on the workbench 6 to realize signal transmission.

[0065] Through this connection mode, the driving insulator 25 can move back and forth relative to the driving housing 22 and the driving insulator 24 together with the driving adapter 23 , the driving rod 21 , the driving elastic connecting tube 26 and the driving pin 27 .

[0066] See also Figure 3 as well as Fig.10The propulsion shell 22 is cylindrical, and the interior is a first inner cavity 223 that runs through both ends. The first inner cavity 223 can be transitionally matched with the outer surface 245 of the propulsion insulator 24. The axis of the propulsion shell 22 extends in the horizontal direction, and a plane 224 is respectively provided on the top and bottom of its outer circumference to ensure that the propulsion shell 22 and the workbench 6 fit closely. The end of the propulsion shell 22 facing the middle of the workbench 6 is a propulsion front end 226, and a transition section 225 is provided between the propulsion front end 226 and the main body of the propulsion shell 22 provided with the plane 224. Two first fixing holes 221 are provided on the bottom plane 224, and the propulsion shell 22 is fixed to the workbench 6 by fasteners such as screws or pins by matching the two first fixing holes 221 with the two third holes 64 of the workbench 6.

[0067] A second long groove 222 is provided between the two first fixing holes 221 . The second long groove 222 is communicated with the first inner cavity 223 . The second long groove 222 and the first long groove 63 of the workbench 6 have the same shape and size and are matched in position.

[0068] See also Figure 3 as well as Fig.12 The propulsion insulator 24 is in the shape of a circular tube, including an outer surface 245 and an inner cavity, wherein the outer surface 245 is engaged with the first inner cavity 223 of the propulsion shell 22; the inner cavity is divided into two sections with different diameters, namely the first cavity 241 and the second cavity 242, wherein the diameter of the first cavity 241 is smaller than the diameter of the second cavity 242. The first cavity 241 is used to accommodate the propulsion rod 21, and the second cavity 242 is used to accommodate the propulsion adapter 23. A step 243 is provided at the connection between the first cavity 241 and the second cavity 242. The step 243 can limit the axial position of the propulsion adapter 23. After the propulsion rod 21 and the propulsion adapter 23 are fixed, they are inserted into the first cavity 241 of the propulsion insulator 24 and extend out, and the propulsion rod 21 and the first cavity 241 are clearance-matched, which is convenient for the axial movement of the propulsion rod 21; the second cavity 242 and the outer peripheral surface 237 of the propulsion adapter 23 are clearance-matched, which is convenient for the axial movement of the propulsion adapter 23.

[0069] The propulsion insulator 24 is also provided with a third long groove 244, which is connected to the second cavity 242, and has the same shape and size as the second long groove 222 and the first long groove 63, and matches the position. The propulsion elastic connecting tube 26 connected to the propulsion adapter 23 and the propulsion pin 27 connected to the propulsion elastic connecting tube 26 can reciprocate along the axial direction of the first long groove 63, the second long groove 222 and the third long groove 244.

[0070] See also Figure 3 as well as Fig.11The propulsion adapter 23 is in the shape of a circular tube, including an outer peripheral surface 237 and an internal through hole extending axially. The internal through hole is divided into three sections, namely the propulsion rod connecting cavity 231 located at both ends, the insulator connecting cavity 232 and the middle cavity 233 located in the middle. Among them, the diameter of the middle cavity 233 is smaller than the diameter of the propulsion rod connecting cavity 231, and is also smaller than the diameter of the insulator connecting cavity 232. The connection between the middle cavity 233 and the propulsion rod connecting cavity 231 has a first step 234, and the connection between the middle cavity 233 and the insulator connecting cavity 232 has a second step 235. A radially extending propulsion elastic connecting tube connecting cavity 236 is also provided in the middle of the propulsion adapter 23, and the propulsion elastic connecting tube connecting cavity 236 is connected with the middle cavity 233. The push rod connection cavity 231 is fixedly connected to the rear section of the push rod 21, the insulator connection cavity 232 is fixedly connected to the insulator front section 251 of the push insulator 25, and the push elastic connection tube connection cavity 236 is connected to the push elastic connection tube 26. The push rod 21, the push elastic connection tube 26 and the push adapter 23 are metal parts, and the effective transmission of signals is achieved through fixed connection.

[0071] See also Figure 3 as well as Fig.13 The push insulator 25 includes an insulator front section 251 and an insulator rear section 252, and a push rod connection cavity 253 is recessed inwardly at the end of the insulator rear section 252. The insulator front section 251 can extend into the insulator connection cavity 232 of the push adapter 23, the insulator rear section 252 is located in the second cavity 242 of the push insulator 24 and has a clearance fit with the second cavity 242, and the push rod front section 412 is inserted into the push rod connection cavity 253 and fixedly connected to the push insulator 25.

[0072] The structure of the feeding component 4 is as follows Figure 5 As shown, it includes a push rod 41, a push handle 42, a spring 43, and a feed seat 44. Figure 1 and Figure 5 The feed seat 44 is fixedly arranged on one side edge of the workbench 6, and one end of the push handle 42 is fixed on the workbench 6 and is located between the propulsion body 2 and the feed seat 44. The push rod rear section 413 of the push rod 41 passes through the first push rod through hole 441 on the feed seat 44, and the push rod front section 412 of the push rod 41 passes through the second push rod through hole 422 on the push handle 42, and is inserted into the push rod connection cavity 253 on the propulsion insulator 25, and is fixedly connected to the propulsion insulator 25. The spring 43 is sleeved on the push rod 41 and is located between the limit ring 411 in the middle of the push rod 41 and the feed seat 44. The elastic force of the spring 43 keeps the push rod 41 against the push handle 42.

[0073] Specifically, the push rod 41 includes a push rod front section 412, a push rod rear section 413, and a stop ring 411 disposed between the push rod front section 412 and the push rod rear section 413. The stop ring 411 has a diameter greater than that of the push rod front section 412 and the push rod rear section 413, and is used for the spring 43 to abut against so as to provide thrust to the push rod 41.

[0074] The push handle 42 includes a horizontal mounting portion and an elastic support portion. The horizontal mounting portion is arranged at one end of the elastic support portion, and a push handle mounting hole 423 is arranged thereon, and the push handle 42 is fixedly connected to the seventh hole 68 on the workbench 6 through the push handle mounting hole 423. The elastic support portion is an elastic spring extending in the vertical direction, and a bending portion 421 is arranged in the middle of the elastic spring, and a second push rod through hole 422 is arranged in the middle of the bending portion 421, and the push rod front section 412 of the push rod 41 passes through the second push rod through hole 422. The second push rod through hole 422 is a rectangular hole, and its height is greater than the diameter of the push rod front section 412 and smaller than the size of the limit ring 411, so that the limit ring 411 can limit the push rod 41. The length of the second push rod through hole 422 is 2-3 times the height, so that the push rod front section 412 can move freely therein when the push handle 42 is driven to avoid friction or interference. The free end of the push handle 42 is moved toward the feed seat 44 , and the push handle 42 can drive the push rod 41 to retreat under the action of the limit ring 411 . When the push handle 42 is released, the elastic force of the spring 43 can push the push rod 41 to move toward the propulsion body 2 .

[0075] The bending portion 421 can be a bent plane or a curved surface. By providing the bending portion 421, it can be ensured that the spring 43 is also completely pressed against the surface of the push handle 42 during the driving process of the push handle 42, so as to avoid the tilt of the force direction causing the movement direction of the push rod 21 to tilt.

[0076] The push handle 42 is preferably made of stainless steel. In order to ensure that it has appropriate elasticity and rigidity, the thickness of the push handle 42 is in the range of 0.8-1.2 mm, preferably 1 mm. Within this thickness range, the push handle 42 can be easily deformed to push the push rod 41, and the limit ring 411 can also stably limit the push rod 41.

[0077] The feed seat 44 includes a horizontally arranged mounting portion and a vertically arranged supporting portion, the mounting portion is provided with a feed seat mounting hole 442, and the feed seat 44 is fixedly connected to the sixth hole 67 on the workbench 6 through the feed seat mounting hole 442. A first push rod through hole 441 is provided on the supporting portion for supporting the push rod 41.

[0078] Pushing the push handle 42 to move toward the spring 43 can drive the push rod 41, the push insulator 25, the push adapter 23 and the push rod 21 to move synchronously, so that the front section 211 of the push rod is separated from the baffle 311 of the fixed rod 31. At this time, the magnetic core can be placed on the positioning slider 5. Loosening the push handle 42 can allow the front section 211 of the push rod to pass through the center of the magnetic core and contact the baffle 311 of the fixed rod 31 to form a closed loop.

[0079] The structure of the fixed body 3 in the magnetic core performance detection device of the present invention is as follows: Figure 4 As shown, it includes a fixed rod 31, a fixed shell 32, a fixed adapter 33, a fixed insulator 34, a fixed insulator 35, a fixed elastic connecting tube 36 and a fixed pin 37. Among them, the fixed shell 32 is fixedly arranged on the side of the workbench 6 opposite to the propulsion body 2, and the fixed insulator 34 is arranged inside the fixed shell 32 to achieve insulation between its internal components and the fixed shell 32. The fixed adapter 33 is arranged inside the fixed insulator 34. One end of the fixed rod 31 is axially inserted into the fixed adapter 33. One end of the fixed elastic connecting tube 36 radially passes through the fixed shell 32, the fixed insulator 34 and is fixedly connected to the middle part of the fixed adapter 33. The fixed insulator 35 is arranged on the outer surface of the fixed elastic connecting tube 36, and the fixed insulator 35 is used to achieve insulation between the fixed shell 32. The other end of the fixed elastic connecting tube 36 is fixedly connected to one end of the fixed pin 37. A wire is crimped onto the other end of the fixed pin 37 , and the wire is connected to the connecting pin 13 fixed in the second hole 62 on the workbench 6 to achieve signal transmission.

[0080] Specifically, the fixing rod 31 includes a slender rod portion and a baffle 311 disposed at one end of the rod portion, and the baffle 311 can abut against the front section of the push rod 211. Preferably, in the present invention, the push rod 21 and the fixing rod 31 are both nickel-plated, which improves the wear resistance of the push rod 21 and the fixing rod 31, prolongs the service life of the equipment, and at the same time, the better conductivity is more conducive to the test of electrical properties.

[0081] The structure of the fixed housing 32 is as follows: Fig.14 As shown, it is cylindrical and includes a fixed front end 326, a connecting section 325, a mounting section 324, and a second inner cavity 323 that runs through the entire fixed housing 32. A plane is provided at the top and bottom of the mounting section 324 to ensure a close fit with the workbench 6. Two second fixing holes 321 are provided in the mounting section 324, and the fixed body 3 is fixedly connected to the fifth hole 66 on the workbench 6 through the second fixing holes 321. A first through hole 322 is provided between the two second fixing holes 321 for the fixed elastic connecting tube 36 to pass through. The second inner cavity 323 can be transitionally matched with the fixed insulator outer interface 341 of the fixed insulator 34.

[0082] like Fig.16As shown, the fixed insulator 34 is a hollow tube, including a fixed insulator outer surface 341 and a third inner cavity 342 that runs through the entire axial direction of the fixed insulator 34, and a second through hole 343 is radially opened in the middle of the fixed insulator 34. The third inner cavity 342 is transitionally matched with the fixed insulator outer surface 331 of the fixed adapter 33, and the second through hole 343, the first through hole 322 on the fixed housing 32, and the third through hole 333 on the fixed adapter 33 are on the same axis after installation, and the second through hole 343 has the same size as the first through hole 322 on the fixed housing 32, and is larger than the size of the third through hole 333 on the fixed adapter 33.

[0083] The structure of the fixed adapter 33 is as follows: Fig.15 As shown, the fixed adapter 33 is cylindrical and includes a fixed insulator outer surface 331. An axially extending blind hole 332 is recessed inward from one end of the fixed adapter 33. A third through hole 333 is provided in the middle of the fixed adapter 33. The third through hole 333 is connected to the blind hole 332. The fixed rod 31 is inserted into the blind hole 332, and the two are interference fit. The fixed elastic connecting tube 36 is inserted into the third through hole 333, and the two are interference fit.

[0084] The fixed pin 37 is matched and connected with the fixed elastic connecting tube 36, and the fixed elastic connecting tube 36 and the fixed pin 37 pass through the fourth hole 65 on the workbench 6. The tail of the fixed pin 37 adopts a wire crimping hole to crimp the wire, the connection is firm, and stable signal transmission is achieved at the same time.

[0085] The structure of the push pin 27 is as follows Fig.17 As shown, the push pin 27 includes a push pin end 275, a push pin front section 274, a push pin shoulder 273 and a push pin rear section 272. A first wire connection cavity 271 is provided in the push pin rear section 272, and the first wire connection cavity 271 can be connected with a wire to realize signal transmission. The push pin front section 274 extends into the inner cavity of the push elastic connecting tube 26 to achieve contact. The push pin end 275 is rounded or chamfered to facilitate the push pin front section 274 of the push pin 27 to extend into the inner cavity of the push elastic connecting tube 26. The push pin 27 is gold-plated.

[0086] The structure of the fixed pin 37 is completely the same as that of the push pin 27, and will not be described in detail. The second wire connection cavity 371 of the fixed pin 37 can be connected with the wire to realize signal transmission, and the front section 374 of the fixed pin extends into the interior of the fixed elastic connecting tube 36 to achieve contact. The fixed pin end 375 is rounded or chamfered to facilitate the front section 374 of the fixed pin 37 to extend into the interior of the fixed elastic connecting tube 36. The fixed pin 37 is gold-plated.

[0087] The structure of the advancing elastic connecting tube 26 is as follows Fig.18As shown, one end of the push elastic connecting tube 26 is provided with four evenly distributed first slots 261 in the circumferential direction. The first slots 261 have a certain prestress after heat treatment and closing, which can ensure close contact with the push pin 27. The push elastic connecting tube 26 is gold-plated.

[0088] The structure of the fixed elastic connecting tube 36 is completely the same as that of the propulsive elastic connecting tube 26 and will not be described in detail.

[0089] The structure of the positioning slide block 5 is as follows Figure 6 As shown, a slide groove 52 is provided on each side of the bottom of the positioning slider 5, and the slide groove 52 can slide with the slide rail 68 on the workbench 6. A plurality of magnetic core placement grooves 51 are provided on the top of the positioning slider 5, and the magnetic core placement grooves 51 can be set to different depths according to the size of the magnetic core to ensure that the front section 211 of the push rod is located at the center of the magnetic core. The depth of the magnetic core placement groove 51 is preferably 1 / 3 of the height of the magnetic core of the corresponding model. Different magnetic core placement grooves 51 are provided on the top of the positioning slider 5 to realize the performance detection of magnetic cores of different models, and slide grooves 52 are provided on both sides of the bottom to make the loading and unloading of the magnetic core more convenient and quick.

[0090] The positioning slide block 5 is made of non-metallic material, preferably nylon material, which has good wear resistance and anti-skid properties, is non-conductive, and will not affect the magnetic field of the magnetic core.

[0091] The working principle of the present invention is as follows: one port of the transformer tester is connected to the first interface in the connection interface 1, the connection pin 13 of the first interface is connected to the push pin 27 through a wire, the push pin 27 is connected to the push rod 21 through the push elastic connecting tube 26 and the push adapter 23, the front section 211 of the push rod and the baffle 311 of the fixed rod 31 are contacted or separated through the feeding component 4; the fixed rod 31 is connected to the fixed pin 37 through the fixed adapter 33 and the fixed elastic connecting tube 36, the fixed pin 37 is connected to the connection pin 13 of the second interface through a wire, and the second interface is connected to another port of the transformer tester, thereby forming an overall test loop to realize the test of the core performance.

[0092] Pushing the push handle 42 toward the spring 43 can separate the front section 211 of the push rod from the baffle 311 of the fixed rod 31. When separated, the magnetic core can be loaded and unloaded. Loosening the push handle 42 can allow the front section 211 of the push rod to pass through the center of the magnetic core and contact the baffle 311 of the fixed rod 31 to form a closed loop for testing the performance of the magnetic core.

[0093] Compared with the prior art, the magnetic core performance detection device provided in this embodiment has high detection efficiency, high accuracy, stable signal transmission and small error.

[0094] Example 2

[0095] The second embodiment relates to a magnetic core performance detection device, which is further optimized on the basis of the first embodiment.

[0096] See also Fig.19 The magnetic core performance detection device of this embodiment 2 also includes a protective cover 7 and a positioning block 8. The protective cover 7 is used to protect the front section 211 of the push rod, the baffle 311 of the fixed rod 31 and the magnetic core cover, and can also fix the magnetic core in place to prevent it from shaking. The positioning block 8 is used to limit the positioning slider 5 to ensure that the central axis of the magnetic core coincides with the central axis of the push rod 21 and the fixed rod 31 to improve the accuracy of the detection.

[0097] Specifically, see Fig. 20 The workbench 6 also includes a block slide 610, which is perpendicular to the slide rail 69 and is used to place the positioning block 8. The positioning block 8 can reciprocate in the block slide 610. The workbench 6 is also provided with a protective cover positioning groove 611 for positioning the protective cover 7.

[0098] See also Fig.21 The protective cover 7 includes two first side walls 72 and two second side walls 73 in a rectangular shape and a top cover 71. Each first side wall 72 is provided with an opening for passing the push rod 21 or the fixing rod 31. Each second side wall 73 is provided with an opening for passing the positioning slider 5. The bottoms of the four side walls are inserted into the protective cover positioning groove 611.

[0099] One side edge of the top cover 71 is hinged to one of the side walls via a hinge 74. Two locking pieces 711 are protruding downward from the lower surface of the top cover 71. The position and shape of the locking pieces 711 are adapted to fix and lock the magnetic core in the magnetic core placement groove 51 on the positioning slider 5 when the top cover 71 is closed. Preferably, the locking pieces 711 have a certain elasticity to adapt to magnetic cores of different specifications.

[0100] The protective cover 7 can protect the magnetic core, the propulsion rod 21 and the fixing rod 31 to avoid external interference and improve the stability and reliability of the device.

[0101] See also Fig. 22 The side of the positioning slider 5 is also provided with a plurality of positioning slots 53, the number of which is equal to the number of the magnetic core placement slots 51, and they are arranged one by one. When the positioning slider 5 is moved into position, the positioning block 8 is snapped into the corresponding positioning slot 53 under the action of elastic force, so that the central axis of the magnetic core to be detected coincides with the central axis of the push rod 21 and the fixing rod 31.

[0102] The structure of the positioning block 8 is as follows Fig.23As shown, it includes a toggle end 81 and a clamping end 82. The positioning block 8 is set in the clamping block slot 610 of the workbench 6, and an elastic member is set between the toggle end 81 and the clamping block slot 610 to bias the positioning block 8 toward the positioning slider 5. When in use, the toggle end 81 is pushed by hand to make the positioning block 8 retreat away from the positioning slider 5, and then the position of the positioning slider 5 is adjusted. After the adjustment is in place, the elastic member pushes the clamping end 82 of the positioning block 8 to extend into the positioning slot 53 to achieve the positioning of the magnetic core.

[0103] The magnetic core performance detection device of the second embodiment can more accurately position the magnetic core and can ensure that the magnetic core remains in place without shaking due to external forces during the detection process, thereby improving the accuracy and reliability of the detection.

[0104] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A magnetic core performance detection device, characterized in that: It includes a workbench and a connection interface, a propulsion body, a fixed body, a feeding component and a positioning slider fixedly arranged on the workbench; the positioning slider is movably arranged in the middle of the upper surface of the workbench, and is used to fix the magnetic core to be detected; the propulsion body and the fixed body are respectively arranged on both sides of the positioning slider, and the propulsion body includes a propulsion rod, and the end of the propulsion rod facing the fixed body can pass through the middle of the magnetic core and abut against the end of the fixed body facing the propulsion body; the feeding component is arranged on the side of the propulsion body away from the positioning slider, and can drive the propulsion rod to reciprocate in the direction toward or away from the fixed body; the connection interface includes at least a first interface and a second interface, wherein the first interface is electrically connected to the propulsion rod, and the second interface is electrically connected to the fixed body.

2. The magnetic core performance detection device according to claim 1, characterized in that: The connection interface includes a connection housing.

3. The magnetic core performance detection device according to claim 2, characterized in that: The outer surface of the connection shell is evenly distributed with a plurality of locking grooves around its circumference, and the locking grooves are used for locking and fixing the connection with the ports of the transformer tester.

4. The magnetic core performance detection device according to claim 3, characterized in that: The connection interface also includes a connection pin and a first insulator.

5. The magnetic core performance detection device according to claim 4, characterized in that: The connecting pin is installed in the first insulator, and the first insulator is arranged in the connecting housing.

6. The magnetic core performance detection device according to claim 1, characterized in that: The propulsion body further comprises a propulsion shell, a propulsion adapter and a propulsion insulator.

7. The magnetic core performance detection device according to claim 6, characterized in that: The propulsion shell is fixedly arranged on the workbench, the propulsion insulator is fixedly arranged inside the propulsion shell, the propulsion adapter is reciprocatably arranged inside the propulsion insulator, and one end of the propulsion adapter is electrically connected to the propulsion rod.

8. The magnetic core performance detection device according to claim 7, characterized in that: The propulsion body also includes a propulsion elastic connecting tube and a propulsion pin.

9. The magnetic core performance detection device according to claim 8, characterized in that: The middle portion of the propulsion adapter is electrically connected to one end of the propulsion elastic connecting tube, and the other end of the propulsion elastic connecting tube is electrically connected to the propulsion pin.

10. The magnetic core performance detection device according to claim 9, characterized in that: The propulsion body further comprises a propulsion insulator, one end of which is fixedly connected to an end of the propulsion adapter away from the propulsion rod, and the other end of the propulsion insulator is fixedly connected to the feeding component.

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