Core performance test device

Abstract

The present invention relates to the technical field of testing equipment, and discloses a core performance testing device. The core performance testing device includes a downward pressure driving component, a first probe, a second probe, a first conductive member, a second conductive member, and a resistor. The first probe and the second probe are both connected to the output end of the downward pressure driving component. The downward pressure driving component can drive the first probe to penetrate the core and contact the first conductive member, and drive the second probe to penetrate the core and contact the second conductive member; the first probe is connected to one of the positive and negative poles of an external power supply through a wire, and the first conductive member is connected to the other of the positive and negative poles of the external power supply through a wire to form a primary circuit; the second probe is connected to the first access terminal of an external instrument through a wire, and the second conductive member is connected to the second access terminal of the external instrument through a wire via a resistor to form a secondary circuit. The core performance testing device described above is simple to operate, highly efficient, and has good accuracy in test results when testing the core.

Description

Technical Field

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

[0002] The current transformer is an instrument that converts a large current on the primary side into a small current on the secondary side for measurement based on the principle of electromagnetic induction. The current transformer consists of a closed iron core, a primary winding and a secondary winding wound on the iron core. When current flows into the primary winding, the secondary winding will generate an induced current. The performance of the current transformer iron core directly determines the performance of the transformer product, so the performance of the iron core needs to be tested during the research and development process.

[0003] In order to test the iron core, two circuits are usually passed through the iron core, one of which is used to pass current (hereinafter referred to as the primary circuit), and a test resistor is set in the other circuit (hereinafter referred to as the secondary circuit). The secondary circuit is connected to an external instrument, and the instrument can obtain test data for operators to analyze data and evaluate the performance of the iron core.

[0004] In the prior art, when testing different iron cores, it is necessary to frequently connect and disconnect wires, which is not only cumbersome and inefficient, but also causes problems such as line distortion and deformation, and line end damage during frequent operations, thereby affecting the accuracy of the test results. Summary of the invention

[0005] The purpose of the present invention is to provide a core performance testing device, which is simple to operate, high in efficiency and has good test result accuracy when testing the core.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An iron core performance testing device, comprising a downward pressure driving assembly, a first probe, a second probe, a first conductive member, a second conductive member and a resistor;

[0008] One end of the first probe is connected to the output end of the downward driving component, and one end of the second probe is connected to the output end of the downward driving component. The downward driving component can drive one end of the first probe to pass through the iron core and contact the first conductive member, and drive one end of the second probe to pass through the iron core and contact the second conductive member;

[0009] The other end of the first probe is connected to one of the positive and negative poles of the external power source through a wire, and the first conductive member is connected to the other of the positive and negative poles of the external power source through a wire to form a primary circuit;

[0010] The other end of the second probe is connected to the first access end of the external instrument through a wire, and the second conductive member is connected to the second access end of the external instrument through the wire via the resistor to form a secondary loop.

[0011] As an optional solution, the core performance testing device further includes:

[0012] A first pressure applying component is connected to the output end of the downward pressure driving component, and the downward pressure driving component can drive the first pressure applying component to apply pressure to the iron core in a first direction;

[0013] The first pressure sensor is used to detect a first pressure applied to the iron core in the first direction.

[0014] As an optional solution, the core performance testing device further includes a connecting component, the connecting component is connected to the output end of the downward pressure driving component, and the first pressure applying component, the first probe and the second probe are all connected to the connecting component;

[0015] The connecting assembly is at least partially elastically deformable to move the first pressure applying assembly relative to the first probe in a direction of movement of the first probe and to move the first pressure applying assembly relative to the second probe in a direction of movement of the second probe.

[0016] As an optional solution, the connection component includes:

[0017] A first support member is transmission-connected to the output end of the downward-pressing driving assembly, and the first pressure-applying assembly is connected to the first support member;

[0018] A second support member, slidably matched with the first support member, the first probe and the second probe are both connected to the second support member;

[0019] An elastic member is connected between the first supporting member and the second supporting member, and the elastic member is configured to elastically press the first probe against the first conductive member, and to elastically press the second probe against the second conductive member.

[0020] As an optional solution, a sliding cavity is provided in the first support member, at least part of the second support member is provided in the sliding cavity and slidably cooperates with the sliding cavity, and the elastic member is provided in the sliding cavity and is respectively connected to the inner wall of the sliding cavity and the second support member.

[0021] As an optional solution, the second support member includes:

[0022] A piston is disposed in the sliding cavity and slidably cooperates with the sliding cavity;

[0023] A connecting piece has one end connected to the piston and the other end extending out of the sliding cavity. Both the first probe and the second probe are connected to the connecting piece.

[0024] As an optional solution, the second support member is at least partially insulated, and the core performance testing device further includes:

[0025] a third conductive member, the first probe being connected to the third conductive member, the third conductive member being connected to one side of the second supporting member and being connected to a wire constituting the primary circuit;

[0026] A fourth conductive member, the second probe is connected to the fourth conductive member, the fourth conductive member is connected to the other side of the second supporting member, and is connected to the conducting wire constituting the secondary circuit.

[0027] As an optional solution, the core performance testing device further includes a mounting seat, and the downward pressure driving assembly includes:

[0028] A driving source connected to the mounting seat;

[0029] A transmission wheel connected to the output end of the driving source, and the driving source can drive the transmission wheel to rotate;

[0030] The transmission rod is slidably matched with the mounting seat and meshed with the transmission wheel, and the first support member is connected to the transmission rod.

[0031] As an optional solution, the mounting base is provided with:

[0032] a first through hole, the first support member slidably engaging with the first through hole; and / or

[0033] The second through hole is slidably matched with the transmission rod.

[0034] As an optional solution, the first support member includes:

[0035] A main body portion, slidably matched with the first through hole;

[0036] A first connection portion, connected to one end of the main body, and one end of the transmission rod is connected to the first connection portion;

[0037] The second connecting part is connected to the other end of the main body, the other end of the transmission rod is connected to the second connecting part, and the first pressure applying assembly is connected to the second connecting part.

[0038] As an optional solution, the core performance testing device further includes:

[0039] a second pressure applying assembly, for applying pressure to the core in a second direction;

[0040] The second pressure sensor is used to detect a second pressure exerted on the iron core in the second direction.

[0041] As an optional solution, the second pressure applying assembly includes a telescopic driving member and a pressing member, the pressing member is connected to the output end of the telescopic driving member, the second pressure sensor and the pressing member are arranged opposite to each other along the second direction, and respectively press against the iron core.

[0042] As an optional solution, the core performance testing device further includes a slider, and the second pressure sensor is mounted on the slider, and the slider can drive the second pressure sensor to move in the second direction.

[0043] As an optional solution, the core performance testing device further includes:

[0044] The mounting member, the slider and the mounting member are slidably matched:

[0045] A screw rod is rotatably mounted on the mounting member, and the slider is drivingly connected to the screw rod;

[0046] The handle can drive the screw rod to rotate, so as to drive the slider to move along the screw rod.

[0047] As an optional solution, the core performance testing device further includes a base, wherein:

[0048] The base is provided with a groove, and part of the mounting member and the sliding block are arranged in the groove; and / or

[0049] The base is provided with an avoidance hole, and the first conductive member and the second conductive member are both connected to the lower side of the base and are opposite to the avoidance hole; and / or

[0050] The downward pressing driving assembly and the second pressure applying assembly are both arranged on the upper side of the base.

[0051] The beneficial effects of the present invention are:

[0052] The core performance test device of the present invention comprises a downward pressure driving component, a first probe, a second probe, a first conductive member, a second conductive member and a resistor. After the downward pressure driving component drives the first probe to pass through the core and contact the first conductive member, and the second probe to pass through the core and contact the second conductive member, the primary circuit connected to the external power supply is closed, and the secondary circuit connected to the external instrument is closed. The primary circuit generates current through the external power supply, and the secondary circuit generates induced current due to the action of the core. The instrument collects parameters such as current and voltage in the secondary circuit, so that the operator can evaluate the performance of the core. During the core performance test, the downward pressure driving component only needs to complete the downward pressure or lifting action to realize the connection or disconnection of the two circuits, which is simple to operate and efficient. Through the pressure of the downward pressure driving component, the first probe and the first conductive member can be reliably contacted, and the second probe and the second conductive member can be reliably contacted, so as to ensure the reliability of the test data. In addition, during the test, it is not necessary to repeatedly operate the wires in the two circuits, so as to avoid the problem of inaccurate test results caused by damage to the wires or the ends of the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a structural schematic diagram of an iron core performance testing device provided in a specific embodiment of the present invention;

[0054] Figure 2 It is a partial structural schematic diagram of an iron core performance testing device provided in a specific embodiment of the present invention;

[0055] Figure 3 is a top view of an iron core performance testing device provided in a specific embodiment of the present invention;

[0056] Figure 4 yes Figure 3 BB section view in;

[0057] Figure 5 It is a bottom view of a part of the structure of the core performance testing device provided by a specific embodiment of the present invention;

[0058] Figure 6 yes Figure 2 A in the enlarged view;

[0059] Figure 7 yes Figure 3 CC section view in;

[0060] Figure 8 yes Figure 7 Enlarged view of point D in .

[0061] In the figure:

[0062] 10. Pressing drive assembly; 11. Driving source; 12. Transmission wheel; 13. Transmission rod;

[0063] 21. a first probe; 22. a first conductive member; 23. a third conductive member;

[0064] 31. second probe; 32. second conductive member; 33. fourth conductive member; 34. resistor; 36. rivet;

[0065] 41. a first pressure applying assembly; 42. a first pressure sensor;

[0066] 50. Connecting assembly; 51. First supporting member; 511. Main body; 5111. Sliding cavity; 512. First connecting portion; 513. Second connecting portion; 52. Second supporting member; 521. Piston; 522. Connecting member; 53. Elastic member;

[0067] 60. mounting seat; 61. first through hole; 62. second through hole;

[0068] 71. second pressure applying assembly; 711. telescopic driving member; 712. pressing member; 72. second pressure sensor; 73. slider; 74. mounting member; 75. screw rod; 76. handle; 77. guide column;

[0069] 80. base; 81. groove; 82. avoidance hole; 83. horizontal support plate; 84. installation space; 85. insulating connecting plate; 851. plate body; 852. convex rib;

[0070] 90. height adjustment mechanism; 91. screw rod; 92. threaded part;

[0071] 100. Instrument; 200. Computer. DETAILED DESCRIPTION

[0072] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0073] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0075] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0076] This embodiment provides a core performance test device, which can be used to test the performance of the core without windings in a current transformer. The core is in the shape of a ring-shaped cylinder. In this embodiment, the cross-sectional shape of the core is a ring. In other embodiments, the cross-sectional shape of the core is not limited. Figure 1 As shown, when the core performance test device is used, it is necessary to cooperate with an external power supply, an instrument 100 and a computer 200. Specifically, the power supply supplies power to the core performance test device, the instrument 100 obtains test data and transmits the data to the computer 200, and the computer 200 can output the test results. In this embodiment, the power supply is integrated inside the instrument 100. In other embodiments, the power supply and the instrument 100 can also be a separate structure, which is not specifically limited here.

[0077] like Figure 1-Figure 4As shown, the core performance test device includes a downward pressure drive assembly 10, a first probe 21, a second probe 31, a first conductive member 22, a second conductive member 32 and a resistor 34. Further, optionally, the core performance test device also includes a base 80 and a mounting seat 60. Wherein, the first conductive member 22 and the second conductive member 32 are both mounted on the base 80. When the core is tested, the core is placed on the upper side of the first conductive member 22 and the second conductive member 32, and at least part of the first conductive member 22 and at least part of the second conductive member 32 are opposite to the center hole of the core. The mounting seat 60 is arranged above the base 80, and the downward pressure drive assembly 10 is mounted on the mounting seat 60. The first probe 21 and the second probe 31 are both connected to the output end of the downward pressure drive assembly 10. Specifically, the first probe 21 is located directly above the first conductive member 22, and the second probe 31 is located directly above the second conductive member 32. The downward driving assembly 10 can drive the first probe 21 and the second probe 31 to move downward, so that one end of the first probe 21 is penetrated by the iron core and contacts the first conductive member 22, and one end of the second probe 31 is penetrated by the iron core and contacts the second conductive member 32. The other end of the first probe 21 is connected to one of the positive and negative poles of the external power supply through a wire, and the first conductive member 22 is connected to the other of the positive and negative poles of the external power supply through a wire to form a primary circuit. The other end of the second probe 31 is connected to the first access terminal of the external instrument 100 through a wire, and the second conductive member 32 is connected to the second access terminal of the external instrument 100 through a wire via a resistor 34 to form a secondary circuit. It should be noted that the resistance of the resistor 34 in this embodiment is much greater than the resistance of the wire in the secondary circuit. Since the external instrument 100 needs to detect the voltage change at both ends of the resistor 34, by setting the resistance of the resistor 34 to have a large difference from the resistance of the above-mentioned wire itself, the detected voltage change can be made more sensitive, thereby improving the accuracy of the test. Optionally, the resistance of the resistor 34 can be 210mΩ.

[0078] During the test, the primary circuit generates current through the power supply of an external power source, and the secondary circuit generates an induced current due to the action of the iron core. The instrument 100 collects the current, voltage and other parameters in the secondary circuit, so that the operator can evaluate the performance of the iron core. During the iron core performance test, the downward pressure drive component 10 only needs to complete the downward pressure or lifting action to achieve the connection or disconnection of the two circuits, which is simple to operate and efficient. Through the pressure of the downward pressure drive component 10, the first probe 21 and the first conductive member 22 can be reliably contacted, and the second probe 31 and the second conductive member 32 can be reliably contacted, ensuring the reliability of the test data. In addition, during the test, there is no need to repeatedly operate the wires in the two circuits, thereby avoiding the problem of inaccurate test results caused by damage to the wires or the ends of the wires.

[0079] like Figure 1 , Figure 3 and Figure 4As shown, the base 80 is constructed as a shell structure, and the base 80 has a horizontal support plate 83 and an installation space 84 located below the horizontal support plate 83. The horizontal support plate 83 is provided with an avoidance hole 82, and the first conductive member 22 and the second conductive member 32 are located in the installation space 84 on the lower side of the base 80 and are opposite to the avoidance hole 82. The first probe 21 is passed through the iron core downward and then the avoidance hole 82 is passed through to contact the first conductive member 22, and the second probe 31 is passed through the iron core downward and then the avoidance hole 82 is passed through to contact the second conductive member 32. The installation space 84 on the lower side of the base 80 can accommodate the first conductive member 22, the second conductive member 32, and the wires constituting the primary circuit and the secondary circuit, so as to prevent the above-mentioned components from being exposed to the outside and being damaged or misoperated.

[0080] Specifically, Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment, the wire (wire a) connected to the first probe 21 is directly connected to the negative electrode (or positive electrode) of the external power supply, and the wire (wire b) connected to the first conductive member 22 is partially located in the above-mentioned installation space 84, and is connected to the positive electrode (or negative electrode) of the external power supply after being passed through the outside of the base 80. The wire (wire c) directly connected to the second probe 31 is passed downward to the installation space 84 below the horizontal support plate 83, and is connected to one end of the resistor 34. The wire (wire d) connected to the second conductive member 32 is connected to the other end of the resistor 34, and wires e and wire f are respectively led out of the two ends of the resistor 34. After the wires e and wire f pass through the outside of the base 80, they are respectively connected to the first contact end and the second contact end of the external instrument 100. It can be understood that the above is only one embodiment of the wire arrangement. In other embodiments, the wires can be flexibly arranged according to actual needs.

[0081] like Figure 6 As shown, the core performance test device further includes an insulating connecting plate 85, which includes a plate body 851 and a convex rib 852. The plate body 851 is connected to the base 80, and the convex rib 852 is arranged on the upper side of the plate body 851. The first conductive member 22 and the second conductive member 32 are both fixed on the plate body 851 and located on both sides of the convex rib 852. On the one hand, the insulating connecting plate 85 can be used to fix the first conductive member 22 and the second conductive member 32; on the other hand, the convex rib 852 can not only position the first conductive member 22 and the second conductive member 32, but also insulate the first conductive member 22 and the second conductive member 32.

[0082] In this embodiment, the first probe 21, the second probe 31, the first conductive member 22, and the second conductive member 32 can all be made of chromium-zirconium-copper material, which not only has good electrical conductivity but also good wear resistance, thereby reducing wear during frequent use and improving the service life of the core performance test device and the reliability of the test results. Optionally, the cross-sectional shape of the first probe 21 and the second probe 31 are both rectangular and the size is the same, both of which are 60 mm long and 3 mm wide, and the thickness can be flexibly adjusted as needed.

[0083] In some cases, it is necessary to evaluate the performance of the iron core under stress. In the prior art, pressure is usually applied to the iron core first, and then the performance of the iron core after the pressure is applied is tested. This testing method can only compare the performance of the iron core before and after the stress is applied, and cannot obtain the performance change process of the iron core during the stress process.

[0084] In this regard, Figure 2 and Figure 4 As shown, the core performance test device also includes a first pressure applying component 41 and a first pressure sensor 42. Among them, the first pressure applying component 41 is connected to the output end of the downward pressure driving component 10, and the downward pressure driving component 10 can drive the first pressure applying component 41 to apply pressure to the core in the first direction, and the first pressure sensor 42 is used to detect the first pressure applied to the core in the first direction. In this embodiment, the first pressure sensor 42 can be connected to the external instrument 100 through a wire. On the one hand, the external instrument 100 simultaneously obtains the current force magnitude of the core in the first direction and the test parameters of the secondary circuit, so as to test the performance changes of the core during the force process. On the other hand, the downward pressure driving component 10 is used to drive the first probe 21 and the second probe 31, and is also used to drive the first pressure applying component 41 to apply pressure to the core, so as to simplify the structure of the core performance test device and reduce the manufacturing cost of the core performance test device.

[0085] like Figure 4 As shown, the first pressure applying component 41 is located on the upper side of the iron core, and the first pressure sensor 42 is supported on the lower side of the iron core. The shapes of the first pressure applying component 41, the first pressure sensor 42 and the iron core match, thereby ensuring that the first pressure applying component 41 applies pressure to the iron core evenly, and ensuring that the first pressure sensor 42 accurately detects the pressure on the iron core in the first direction. It should be noted that the shape matching mentioned above means that the first pressure applying component 41 can cover the upper surface of the iron core, and is provided with an avoidance hole relative to the center hole of the iron core. The cross-section of the first pressure sensor 42 is also circular, which can ensure that it is evenly supported under the iron core and can avoid the movement of the probe. As shown Figure 4As shown, in this embodiment, the first pressure sensor 42 is disposed in the avoidance hole 82 of the base 80, and the upper surface of the first pressure sensor 42 is not lower than the upper surface of the base 80, thereby making the process of placing the iron core on the first pressure sensor 42 more convenient.

[0086] In order to make the core performance test device capable of testing the performance of the core under two conditions: the core is not under pressure and the core is under pressure in the first direction, such as Figure 2 and Figure 4 As shown, the core performance testing device further includes a connecting assembly, the connecting assembly 50 is connected to the output end of the downward pressure driving assembly 10, and the first pressure applying assembly 41, the first probe 21 and the second probe 31 are all connected to the connecting assembly 50. The connecting assembly 50 can enable the first pressure applying assembly 41 to move relative to the first probe 21 in the movement direction of the first probe 21, and enable the first pressure applying assembly 41 to move relative to the second probe 31 in the movement direction of the second probe 31.

[0087] When the core performance test device is working, the core is first placed on the first pressure sensor 42, and then the driving assembly 10 is pressed down to drive the connecting assembly 50 to move downward. At this time, the first probe 21, the second probe 31 and the first pressure applying assembly 41 move downward synchronously. After the first probe 21 contacts the first conductive member 22 and the second probe 31 contacts the second conductive member 22, the first pressure applying assembly 41 has not yet abutted against the upper surface of the core. At this time, the performance of the core under no pressure can be tested. It should be noted that when testing the core under no stress, the elastic member 53 can have a certain amount of deformation to ensure that the first probe 21 and the first conductive member 22 are in reliable contact, and the second probe 31 and the second conductive member 32 are in reliable contact, as long as the first pressure applying assembly 41 is not in contact with the core.

[0088] Next, the downward driving component 10 continues to drive the connecting component 50 to move downward. At this time, since the first probe 21 contacts the first conductive member 22 and the second probe 31 contacts the second conductive member 32, the first probe 21, the second probe 31 and the second supporting member 52 cannot continue to move downward. At this time, the internal structure of the connecting component 50 moves, so that the first pressure applying component 41 can smoothly contact the upper surface of the iron core downward and apply the first pressure to the iron core. At this time, the iron core performance testing device can test the performance of the iron core under the pressure state in the first direction. In other words, by setting the above-mentioned connecting component 50, the performance test of the iron core in two states can be achieved.

[0089] In this embodiment, the connecting assembly 50 includes a first support member 51, a second support member 52 and an elastic member 53. The first support member 51 is transmission-connected to the output end of the downward-pressing driving assembly 10, and the downward-pressing driving assembly 10 can drive the first support member 51 to move up and down. The first pressure applying assembly 41 is connected to the first support member 51. The second support member 52 is slidably matched with the first support member 51, the first probe 21 and the second probe 31 are both connected to the second support member 52, and the elastic member 53 is connected between the first support member 51 and the second support member 52. The elastic member 53 is configured to elastically press the first probe 21 against the first conductive member 22, and to elastically press the second probe 31 against the second conductive member 32.

[0090] After the downward driving assembly 10 drives the first support assembly 51 to move downward, and the first probe 21 contacts the first conductive member 22, and the second probe 31 contacts the second conductive member 32, when the downward driving assembly 10 continues to drive the first support assembly 51 to move downward, the elastic member 53 is compressed under the action of the first support member 51 and the second support member 52, so that the first pressure applying assembly 41 continues to move downward relative to the first probe 21 and the second probe 31 to apply the first pressure to the iron core. In addition, the elastic member 53 can also ensure that the first probe 21 is in reliable contact with the first conductive member 22, and the second probe 31 is in reliable contact with the second conductive member 32, thereby ensuring the reliability of the detection result.

[0091] In this embodiment, the elastic member 53 is a spring, and the elastic coefficient of the spring needs to be less than a certain threshold value. Therefore, when the iron core is tested under a first direction pressure, damage caused by excessive pressure between the first probe 21 and the first conductive member 22 and between the second probe 31 and the second conductive member 32 can be avoided.

[0092] In other embodiments (not shown in the figure), the connection assembly 50 includes a rigid part and a flexible part, the rigid part is connected to the output end of the downward pressure driving assembly 10, and the first pressure applying assembly 41 is connected to the rigid part. The flexible part is connected to the rigid part, and the first probe 21 and the second probe 31 are both connected to the flexible part. After the downward pressure driving assembly 10 drives the rigid part to move downward, and the first probe 21 contacts the first conductive part 22, and the second probe 31 contacts the second conductive part 32, when the downward pressure driving assembly 10 continues to drive the rigid part to move downward, the flexible part undergoes elastic deformation, so that the first pressure applying assembly 41 continues to move downward relative to the first probe 21 and the second probe 31 to apply the first pressure to the iron core.

[0093] like Figure 4As shown, in this embodiment, a sliding cavity 5111 is provided in the first support member 51, at least part of the second support member 52 is provided in the sliding cavity 5111 and slidably cooperates with the sliding cavity 5111, and the elastic member 53 is provided in the sliding cavity 5111 and is respectively connected to the inner wall of the sliding cavity 5111 and the second support member 52. The sliding cavity 5111 can not only guide the relative movement between the first support member 51 and the second support member 52, but also protect the elastic member 53.

[0094] like Figure 4 and Figure 7 As shown, the second support member 52 includes a piston 521 and a connector 522, wherein the piston 521 is disposed in the sliding cavity 5111 and slides with the sliding cavity 5111, one end of the connector 522 is connected to the piston 521, and the other end extends out of the sliding cavity 5111, and the first probe 21 and the second probe 31 are both connected to the connector 522. In this embodiment, the connector 522 is made of high-strength insulating material. On the one hand, it can prevent the connector 522 from being deformed due to force during the test, thereby preventing the first probe 21 from being unable to contact the first conductive member 22, and the second probe 31 from being unable to contact the second conductive member 32; on the other hand, it can prevent the primary circuit and the secondary circuit from being short-circuited due to the contact between the first probe 21 and the second probe 31. Optionally, the connector 522 can be a carbon fiber plate.

[0095] like Figure 8 As shown, in order to realize the connection between the first probe 21 and the second probe 31 and the connecting member 522 respectively, the core performance testing device also includes a third conductive member 23 and a fourth conductive member 33. The upper end of the first probe 21 is connected to the third conductive member 23, and the third conductive member 23 is connected to one side of the connecting member 522 and is connected to the wire a. The fourth conductive member 33 is connected to the upper end of the second probe 31, and the fourth conductive member 33 is connected to the other side of the connecting member 522 and is connected to the wire c. Optionally, the third conductive member 23 can be connected to the first conductive member 22 by welding, or it can be directly formed integrally with the first conductive member 22. The fourth conductive member 33 can be connected to the second conductive member 32 by welding, or it can be directly formed integrally with the second conductive member 32. As shown Figure 6 and Figure 7As shown, the third conductive member 23 and the fourth conductive member 33 can be riveted to the two sides of the connecting member 522 by an insulating rivet 36. Before riveting, the terminal at the end of the wire a and the terminal at the end of the wire c are correspondingly sleeved on the two sides of the rivet 36, so that the connection between the third conductive member 23 and the connecting member 522, the connection between the fourth conductive member 33 and the connecting member 522, the connection between the wire a and the third conductive member 23, and the connection between the wire c and the fourth conductive member 33 can be achieved by a rivet 36, which has a simple structure and low cost. Of course, in other embodiments, the wire a and the third conductive member 23 can be connected to the connecting member 522 by a bolt, and the wire c and the fourth conductive member 33 can be connected to the connecting member 522 by another bolt, which is not specifically limited here.

[0096] like Figure 2 and Figure 4 As shown, the downward pressure driving assembly 10 includes a driving source 11, a transmission wheel 12 and a transmission rod 13, wherein the driving source 11 is connected to the mounting seat 60, the transmission wheel 12 is connected to the output end of the driving source 11, the driving source 11 can drive the transmission wheel 12 to rotate, the transmission rod 13 is slidably matched with the mounting seat 60, and meshed with the transmission wheel 12, and the connecting assembly 50 is connected to the transmission rod 13. Specifically, the first support member 51 is connected to the transmission rod 13. When the driving source 11 drives the transmission wheel 12 to rotate, the transmission rod 13 moves up and down, thereby driving the first support member 51 to move up and down, and then driving the first probe 21, the second probe 31 and the first pressure applying assembly 41 to move up and down. Through the cooperation of the transmission wheel 12 and the transmission rod 13, not only can the rotational motion be converted into linear motion, but also a deceleration effect can be played, thereby better controlling the pressure applied by the first pressure applying assembly 41 to the iron core. In this embodiment, the transmission wheel 12 is a gear and the transmission rod 13 is a rack. In other embodiments, the transmission wheel 12 can also be a turbine and the transmission rod 13 can be a worm.

[0097] like Figure 2 and Figure 4 As shown, the mounting seat 60 is provided with a first through hole 61, and the first support member 51 is slidably matched with the first through hole 61, thereby guiding the lifting and lowering of the first support member 51, thereby ensuring the accuracy of the motion trajectory of the first probe 21, the second probe 31 and the first pressure applying assembly 41. The mounting seat 60 is also provided with a second through hole 62, the axial direction of the second through hole 62 is parallel to the axial direction of the first through hole 61, and the transmission rod 13 is slidably matched with the second through hole 62, thereby guiding the lifting and lowering movement of the transmission rod 13, thereby further ensuring the accuracy of the motion trajectory of the first probe 21, the second probe 31 and the first pressure applying assembly 41.

[0098] Specifically, Figure 4As shown, the first support member 51 includes a main body 511, a first connection portion 512 and a second connection portion 513, wherein the main body 511 is slidably matched with the first through hole 61, the sliding cavity 5111 is arranged in the main body 511, and the connection member 522 extends to the bottom of the main body 511 and is connected to the first probe 21 and the second probe 31. The first connection portion 512 is connected to the upper end of the main body 511, the upper end of the transmission rod 13 is connected to the first connection portion 512, the second connection portion 513 is connected to the lower end of the main body 511, the lower end of the transmission rod 13 is connected to the second connection portion 513, and the first pressure applying assembly 41 is connected to the second connection portion 513. In this embodiment, the upper and lower ends of the transmission rod 13 are connected to the first support member 51, which can not only ensure the reliability of the connection between the first support member 51 and the transmission rod 13, but also the first support member 51 can limit the lifting stroke of the transmission rod 13. Optionally, in this embodiment, the main body 511 and the second connection portion 513 are integrally formed, and the first connection portion 512 is connected to the main body 511 via a fastener. Figure 4 As shown, the second connection part 513 includes a horizontal section and a vertical section, wherein the horizontal section is connected to the main body 511, the transmission rod 13 is connected to the horizontal section, the vertical section is connected to the lower side of the horizontal section, and the first pressure applying assembly 41 is connected to the vertical section. In other embodiments, the main body 511 and the first connection part 512 can also be set to be integrally formed, and the second connection part 513 is connected to the main body 511 through a fastener. In another implementation, the three can also be formed separately and connected by fasteners.

[0099] like Figure 1 , Figure 2 and Figure 7 As shown, the core performance test device also includes a second pressure applying component 71 and a second pressure sensor 72. The second pressure applying component 71 is used to apply pressure to the core in a second direction, and the second direction is perpendicular to the first direction. The second pressure sensor 72 is used to detect the second pressure exerted on the core in the second direction. In this embodiment, the second pressure sensor 72 is connected to the external instrument 100. The external instrument 100 can simultaneously obtain the current force magnitude of the core in the second direction and the test parameters of the secondary circuit, so that the core performance test device can test the performance of the core under the force state in the second direction, thereby increasing the function of the core performance test device. It should be noted that, without violating the inventive concept of the present application, the second pressure sensor 72 can be one of the prior art.

[0100] like Figure 7As shown, the second pressure applying assembly 71 includes a telescopic driving member 711 and a pressing member 712, the pressing member 712 is connected to the output end of the telescopic driving member 711, and the second pressure sensor 72 and the pressing member 712 are arranged opposite to each other along the second direction and respectively abut against the iron core. In this embodiment, the telescopic driving member 711 is installed on the upper side of the base 80, and can be a component such as a cylinder or an electric cylinder that can output linear motion. The pressing member 712 is a plate, which is arranged perpendicular to the second direction.

[0101] In this embodiment, Figure 7 As shown, the core performance test device also includes a slider 73, which is mounted on a base 80 and can move relative to the base 80 in a second direction. The second pressure sensor 72 is mounted on the slider 73, so the slider 73 can drive the second pressure sensor 72 to move in the second direction. The position of the second pressure sensor 72 can be adjusted by setting the slider 73, and then the position of the core in the second direction can be adjusted, so as to ensure that during the test, the center hole of the core is aligned with the first pressure sensor 42, and the center hole of the core is aligned with the first probe 21 and the second probe 31, so as to ensure the reliability of the test results.

[0102] like Figure 7 As shown, the core performance test device also includes a mounting member 74, a screw rod 75 and a handle 76. The mounting member 74 is mounted on the base 80, the slider 73 is slidably matched with the mounting member 74, the screw rod 75 is rotatably mounted on the mounting member 74, and the slider 73 is transmission-connected with the screw rod 75. The handle 76 is used for operation by the operator, and the handle 76 can drive the screw rod 75 to rotate, thereby driving the slider 73 to move along the screw rod 75, and then driving the second pressure sensor 72 to move to an appropriate position along the second direction. In this embodiment, the handle 76 can be directly connected to the screw rod 75, or it can be connected to the screw rod 75 through a gear transmission structure, as long as it is ensured that the operating handle 76 can drive the screw rod 75 to rotate. The slider 73 is directly threadedly connected to the screw rod 75, thereby driving the slider 73 to move along the screw rod 75. In other embodiments, the slider 73 can be indirectly connected to the screw rod 75 through a nut or other structure.

[0103] like Figure 6 As shown, the core performance testing device also includes a guide column 77, which is connected to the mounting member 74 and extends along the second direction. The slider 73 is sleeved on the guide column 77. The guide column 77 can guide the movement direction of the slider 73, thereby ensuring the movement accuracy of the slider 73 and the second pressure sensor 72 on the slider 73.

[0104] In this embodiment, Figure 7As shown, a groove 81 is provided on the base 80, and part of the mounting member 74 and the slider 73 are provided in the groove 81. Such a configuration can not only enable the base 80 to protect the structure located in the groove 81, but also ensure that the height of the second pressure sensor 72 matches the height of the iron core.

[0105] like Figure 1 and Figure 4 As shown, the core performance test device also includes a height adjustment mechanism 90, which is used to adjust the initial distance between the first probe 21 and the first conductive member 22, and the initial distance between the second probe 31 and the second conductive member 32. It should be noted that the initial distance between the first probe 21 and the first conductive member 22 refers to: the maximum distance between the lower end of the first probe 21 and the first conductive member 22. The initial distance between the second probe 31 and the second conductive member 32 refers to the maximum distance between the lower end of the second probe 31 and the second conductive member 32. By setting the height adjustment mechanism 90, the initial distance between the first probe 21 and the first conductive member 22, and the initial distance between the second probe 31 and the second conductive member 32 can be matched with the model of the core, thereby ensuring that during the test, the pressure of the first probe 21 on the first conductive member 22 is appropriate, and the pressure of the second probe 31 on the second conductive member 32 is appropriate.

[0106] In this embodiment, Figure 4 As shown, the height adjustment mechanism 90 includes a screw 91 and a threaded member 92, wherein the screw 91 is fixed on the base 80, the mounting seat 60 is sleeved on the screw 91, the threaded member 92 is threadedly matched with the screw 91, and the mounting seat 60 is supported on the threaded member 92. When the threaded member 92 is rotated, the threaded member 92 moves up and down along the screw 75, and supports the mounting seat 60, the downward driving assembly 10, the first probe 21 and the second probe 31 to move up and down. It can be understood that after the position of the mounting seat 60 is adjusted, the position of the threaded member 92 and the mounting seat 60 can be further locked by a bolt or other structure. In other embodiments, the specific implementation method of the height adjustment mechanism 90 is not limited.

[0107] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope, and the content of this specification should not be understood as limiting the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The core performance testing device is characterized by: It comprises a downward pressure driving component (10), a first probe (21), a second probe (31), a first conductive member (22), a second conductive member (32), a resistor (34), a first pressure applying component (41), a first pressure sensor (42) and a connecting component (50); The connecting component (50) is connected to the output end of the downward pressure driving component (10), one end of the first probe (21) is connected to the connecting component (50), and one end of the second probe (31) is connected to the connecting component (50), and the downward pressure driving component (10) can drive one end of the first probe (21) to pass through the iron core and contact the first conductive member (22), and drive one end of the second probe (31) to pass through the iron core and contact the second conductive member (32); The other end of the first probe (21) is connected to one of the positive and negative poles of an external power source through a wire, and the first conductive member (22) is connected to the other of the positive and negative poles of the external power source through a wire to form a primary circuit; The other end of the second probe (31) is connected to a first access terminal of an external instrument through a wire, and the second conductive member (32) is connected to a second access terminal of the external instrument through a wire via the resistor (34) to form a secondary circuit; The first pressure applying component (41) is connected to the connecting component (50), the downward pressing driving component (10) can drive the first pressure applying component (41) to apply pressure to the iron core in a first direction, and the first pressure sensor (42) is used to detect a first pressure applied to the iron core in the first direction; The connecting assembly (50) is at least partially elastically deformable so as to enable the first pressure applying assembly (41) to move relative to the first probe (21) in the direction of movement of the first probe (21), and to enable the first pressure applying assembly (41) to move relative to the second probe (31) in the direction of movement of the second probe (31).

2. The core performance testing device according to claim 1, characterized in that: The connection assembly (50) comprises: A first support member (51) is drivingly connected to an output end of the downward pressing drive assembly (10), and the first pressure applying assembly (41) is connected to the first support member (51); A second support member (52) is slidably matched with the first support member (51), and the first probe (21) and the second probe (31) are both connected to the second support member (52); An elastic member (53) is connected between the first support member (51) and the second support member (52), and the elastic member (53) is configured to elastically press the first probe (21) against the first conductive member (22), and to elastically press the second probe (31) against the second conductive member (32).

3. The core performance testing device according to claim 2, characterized in that: A sliding cavity (5111) is provided in the first support member (51), at least a portion of the second support member (52) is provided in the sliding cavity (5111) and slidably cooperates with the sliding cavity (5111), and the elastic member (53) is provided in the sliding cavity (5111) and is respectively connected to the inner wall of the sliding cavity (5111) and the second support member (52).

4. The core performance testing device according to claim 3, characterized in that: The second supporting member (52) comprises: A piston (521) is disposed in the sliding cavity (5111) and is slidably matched with the sliding cavity (5111); A connecting piece (522) has one end connected to the piston (521) and the other end extending out of the sliding cavity (5111), and the first probe (21) and the second probe (31) are both connected to the connecting piece (522).

5. The core performance testing device according to claim 2, characterized in that: The second support member (52) is at least partially insulated, and the core performance testing device further comprises: a third conductive member (23), the first probe (21) being connected to the third conductive member (23), the third conductive member (23) being connected to one side of the second support member (52) and connected to a conductor constituting the primary circuit; A fourth conductive member (33), the second probe (31) is connected to the fourth conductive member (33), the fourth conductive member (33) is connected to the other side of the second support member (52), and is connected to a conductor constituting the secondary circuit.

6. The core performance testing device according to claim 2, characterized in that: The core performance testing device further comprises a mounting seat (60), and the downward pressing driving assembly (10) comprises: A driving source (11) connected to the mounting seat (60); A transmission wheel (12) connected to an output end of the driving source (11), wherein the driving source (11) is capable of driving the transmission wheel (12) to rotate; The transmission rod (13) is slidably matched with the mounting seat (60) and meshed with the transmission wheel (12), and the connecting assembly (50) is connected to the transmission rod (13).

7. The core performance testing device according to claim 6, characterized in that: The mounting seat (60) is provided with: a first through hole (61), the first support member (51) being slidably matched with the first through hole (61); and / or A second through hole (62), the transmission rod (13) slidingly cooperates with the second through hole (62).

8. The core performance testing device according to claim 7, characterized in that: The first supporting member (51) comprises: A main body (511) slidably matched with the first through hole (61); A first connecting portion (512) connected to one end of the main body (511), and one end of the transmission rod (13) is connected to the first connecting portion (512); The second connecting portion (513) is connected to the other end of the main body (511), the other end of the transmission rod (13) is connected to the second connecting portion (513), and the first pressure applying assembly (41) is connected to the second connecting portion (513).

9. The core performance testing device according to any one of claims 1 to 8, characterized in that: The core performance testing device also includes: a second pressure applying assembly (71), used for applying pressure to the iron core in a second direction; A second pressure sensor (72) is used to detect a second pressure applied to the iron core in the second direction.

10. The core performance testing device according to claim 9, characterized in that: The second pressure applying component (71) comprises a telescopic driving member (711) and a pressing member (712), wherein the pressing member (712) is connected to the output end of the telescopic driving member (711), and the second pressure sensor (72) and the pressing member (712) are arranged opposite to each other along the second direction and respectively press against the iron core.

11. The core performance testing device according to claim 10, characterized in that: The core performance testing device further comprises a slider (73), the second pressure sensor (72) being mounted on the slider (73), and the slider (73) being capable of driving the second pressure sensor (72) to move in the second direction.

12. The core performance testing device according to claim 11, characterized in that: The core performance testing device also includes: The mounting member (74), the sliding block (73) and the mounting member (74) are slidably matched: A screw rod (75) is rotatably mounted on the mounting member (74), and the slider (73) is drivingly connected to the screw rod (75); The handle (76) can drive the screw rod (75) to rotate, so as to drive the slider (73) to move along the screw rod (75).

13. The core performance testing device according to claim 12, characterized in that: The core performance testing device further comprises a base (80), wherein: The base (80) is provided with a groove (81), and part of the mounting member (74) and the sliding block (73) are arranged in the groove (81); and / or The base (80) is provided with an avoidance hole (82), and the first conductive member (22) and the second conductive member (32) are both connected to the lower side of the base (80) and are opposite to the avoidance hole (82); and / or The downward pressing driving assembly (10) and the second pressure applying assembly (71) are both arranged on the upper side of the base (80).

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