Testing device

Abstract

The utility model belongs to the technical field of element performance detection, and discloses a testing device. The device comprises a rack, a driving assembly, a pull pressure sensor, a displacement sensor, a force testing mechanism and a displacement testing mechanism. The driving assembly drives in the first direction. The pull pressure sensor is arranged at the driving end of the driving assembly; the force testing mechanism comprises a first connecting piece connected with the pull pressure sensor, a first shielding piece and a first execution piece, the first execution piece is used for pushing or pulling an armature of the electromagnet, the first shielding piece and the armature can move synchronously, and the displacement sensor can detect the position of the first shielding piece; the displacement testing mechanism comprises a mounting sleeve, a pressing piece and a second execution piece; the second execution piece is used for pushing or pulling an armature of the electromagnet, the second shielding piece and the armature can move synchronously, and the displacement sensor can detect the position of the second shielding piece. The device can test both the dynamic performance and the static performance of the electromagnet, is high in integration degree, and can avoid the influence of transverse friction force at the same time.

Description

Technical Field

[0001] This utility model relates to the field of component performance testing technology, and in particular to testing devices. Background Technology

[0002] An electromagnet is a device that utilizes the phenomenon of electromagnetic induction to generate an electromagnetic effect when an electric current is applied. An electromagnet consists of an iron core and a conductive winding wound around the outside of the core, matching its power rating. When current flows through the conductive winding, the electromagnet acquires magnetism. Electromagnets can be used in various applications where electrical energy is converted into mechanical energy, such as low-voltage electrical appliances like electromagnetic relays or circuit breakers. They are also frequently used in hydraulic components like solenoid valves. Furthermore, the precise control of electro-hydraulic control systems relies heavily on the stable and excellent performance of electromagnets.

[0003] Electromagnet evaluation includes both static and dynamic performance. Static performance further includes current-force and displacement-force characteristics; dynamic performance includes force-current step characteristics, displacement-current step characteristics, force-frequency response characteristics, and displacement-frequency response characteristics. Testing the dynamic and static performance of electromagnets is crucial for ensuring their production quality and performance, and is an essential choice for high-quality development.

[0004] Currently, existing electromagnet performance testing devices use two separate sets of equipment for dynamic and static performance testing, resulting in relatively low integration. Furthermore, the existing horizontal testing structure introduces lateral friction that can cause errors in performance testing. For example, CN114690093A provides a functional testing device for a double-push electromagnet. This device includes motor drive detection units symmetrically arranged on both sides of the electromagnet under test. The two motor drive detection units are positioned corresponding to the output shafts on both sides of the electromagnet. Each motor drive detection unit includes a stepper motor, a lead screw, a slide, a load spring, a contact block, and an infrared time measurement module. One end of the lead screw is connected to the stepper motor, and the other end passes through the slide and connects to one end of the load spring. The other end of the load spring is connected to a push rod, which is connected to the contact block. The contact block is positioned corresponding to the output shaft on the side of the electromagnet under test. The infrared time measurement module is connected to the push rod. This horizontal structure cannot avoid the impact of friction on the accuracy of electromagnet performance testing. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for testing the dynamic and static performance of electromagnets. It has a high degree of integration and can also avoid the influence of lateral friction on the test results.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A testing apparatus for detecting the static and dynamic performance of an electromagnet, comprising:

[0008] frame;

[0009] A drive assembly is disposed on the frame, and the drive assembly drives along a first direction;

[0010] A tension / compression sensor is located at the drive end of the drive assembly;

[0011] Displacement sensor, mounted on the frame;

[0012] The force testing mechanism includes a first connector connected to the tension and compression sensor, a first shielding member disposed on the first connector, and a first actuator connected below the first connector. The first actuator is used to push or pull the armature of the electromagnet. The first shielding member can move synchronously with the armature. The displacement sensor can detect the position of the first shielding member.

[0013] The displacement testing mechanism includes a mounting sleeve disposed on the frame, a pressing member disposed within the mounting sleeve and moving along the first direction, an elastic member drivenly connected to the pressing member, a second connecting member connected to the elastic member, and a second actuating member connected to the second connecting member. The second actuating member is used to push or pull the armature of the electromagnet. The second connecting member is provided with a second blocking member. The second blocking member can move synchronously with the armature. The displacement sensor can detect the position of the second blocking member.

[0014] The first direction is the vertical direction.

[0015] As an optional solution for the testing device, the frame includes a platform and a mounting plate disposed on the platform. The drive assembly is disposed on the mounting plate and includes a motor and a cylinder disposed at one end of the motor. The drive end of the cylinder is provided with a cylinder gasket, and the cylinder gasket is connected to the tension / compression sensor.

[0016] As an alternative to the testing device, the mounting plate is provided with a sliding groove extending along a second direction, and the cylinder is provided with a sliding rod that slides in the sliding groove.

[0017] As an alternative to the testing device, the first connecting member is a threaded rod, which is screwed to the tension / compression sensor, and the first shielding member is a strip baffle, which is connected to the outer wall of the threaded rod.

[0018] As an alternative to the testing device, the first actuator is a rod-shaped member that can abut against the armature or be detachably connected to the armature.

[0019] As an optional solution for the testing device, the testing device further includes a fixing component, which includes a second driving member disposed on the frame and a support base drivenly connected to the second driving member. The second driving member can drive the support base to rise and fall, and the support base is used to fix the electromagnet.

[0020] As an alternative to the testing device, the bottom of the second drive unit is provided with a base, which is movable relative to the frame along a second direction.

[0021] As an optional solution for the testing device, the mounting sleeve is a cylindrical sleeve with an internal thread on its inner wall. The pressing member is screwed into the mounting sleeve, and the pressing member can release the elastic element by rotating it in to compress or rotating it out.

[0022] As an optional solution for the testing device, the pressing component is provided with an "I"-shaped groove, which is used to cooperate with a tool to make the pressing component rotate.

[0023] As an alternative to the testing device, the displacement sensor is mounted on the frame and is movable along a second direction.

[0024] Beneficial effects:

[0025] In this invention, the frame provides a stable connection and support position for other mechanisms in the entire device. The driving component applies the testing force to the electromagnet vertically, avoiding the testing errors caused by lateral friction in existing horizontal testing structures, thus improving the testing accuracy of the device. Furthermore, the first actuator abuts or connects with the armature of the electromagnet to push or pull it. The first connector connects the tension / compression sensor to the first actuator, ensuring accurate acquisition of the electromagnetic force of the electromagnet's armature through the first actuator. The first shield on the first connector acquires the armature displacement, with the first shield moving synchronously with the armature; that is, the armature's movement is directly reflected in the first shield, and the displacement through the first shield can be displaced. The sensor accurately acquires data, enabling the force testing mechanism to participate in the testing of electromagnets' current-force characteristics, displacement-force characteristics, force step characteristics, and force frequency response characteristics. In the displacement testing mechanism, the driving component is no longer used to provide force; instead, a pressing component drives a connected elastic element. This elastic element acts on a second connecting component, which in turn acts on a second actuating component. Similarly, the second actuating component abuts against or connects to the electromagnet's armature, thus pushing or pulling the armature. A second blocking component on the second connecting component accurately reflects the armature's displacement, and a displacement sensor further detects the displacement of the second blocking component. The displacement testing mechanism can be used to test the electromagnet's displacement frequency response characteristics and displacement step characteristics. This device facilitates the combined measurement of the electromagnet's dynamic and static characteristics, offering high integration and testing efficiency. Furthermore, the force is applied vertically, effectively avoiding interference from frictional forces on the test results. Attached Figure Description

[0026] Figure 1 This is a front view of the testing device provided in this embodiment of the utility model;

[0027] Figure 2 This is a front view of the testing device of the hidden displacement testing mechanism provided in this embodiment of the utility model;

[0028] Figure 3 This is an isometric drawing of the displacement testing mechanism provided in this embodiment of the utility model;

[0029] Figure 4 This is an isometric view of the frame provided in this embodiment of the utility model.

[0030] In the picture:

[0031] X, first direction; Y, second direction;

[0032] 100. Electromagnet;

[0033] 1. Frame; 11. Platform; 111. Guide groove; 12. Mounting plate; 121. Slide groove;

[0034] 2. Drive assembly; 21. Motor; 22. Cylinder; 221. Slide rod; 23. Cylinder head gasket;

[0035] 3. Tension / compression sensor;

[0036] 4. Displacement sensor;

[0037] 5. Force testing mechanism; 51. First connecting member; 52. First shielding member; 53. First actuating member;

[0038] 6. Displacement testing mechanism; 61. Mounting sleeve; 62. Pressing component; 621. Groove; 63. Elastic component; 64. Second connecting component; 65. Second actuating component; 66. Second shielding component;

[0039] 7. Fixing component; 71. Second drive component; 72. Support base; 73. Base. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] Please see the appendix Figure 1 -Appendix Figure 4 This embodiment relates to a testing device (hereinafter referred to as the "device"), which is used to detect the static and dynamic performance of an electromagnet 100. The static performance includes current-force characteristics and displacement-force characteristics; the dynamic performance includes force-current step characteristics, displacement-current step characteristics, force frequency response characteristics, and displacement frequency response characteristics. Specifically, the device includes a frame 1, a drive assembly 2, a tension / compression sensor 3, a displacement sensor 4, a force testing mechanism 5, and a displacement testing mechanism 6. The drive assembly 2 is mounted on the frame 1 and drives along a first direction X. The tension / compression sensor 3 is located at the drive end of the drive assembly 2. The displacement sensor 4 is located on the frame 1. The force testing mechanism 5 includes a first connecting member 51 connected to the tension / compression sensor 3, a first blocking member 52 located on the first connecting member 51, and a first actuating member 53 connected below the first connecting member 51. The first actuating member 53 is used to push or pull the armature of the electromagnet 100. The first blocking member 52 can move synchronously with the armature, and the displacement sensor 4 can detect the position of the first blocking member 52. The testing mechanism 6 includes a mounting sleeve 61 disposed on the frame 1, a pressing member 62 disposed within the mounting sleeve 61 and moving along the first direction X, an elastic member 63 drivenly connected to the pressing member 62, a second connecting member 64 connected to the elastic member 63, and a second actuating member 65 connected to the second connecting member 64. The second actuating member 65 is used to push or pull the armature of the electromagnet 100. The second connecting member 64 is provided with a second blocking member 66, which can move synchronously with the armature. The displacement sensor 4 can detect the position of the second blocking member 66. The first direction X is the vertical direction.

[0045] In this embodiment, the frame 1 is a metal frame used to stably connect and support the other mechanisms of the entire device. The drive assembly 2 can provide driving force along the first direction X, which remains vertical, ensuring that the test force on the electromagnet 100 acts vertically. This avoids the lateral friction that can cause certain test errors in performance testing in existing horizontal test structures, thus improving the test accuracy of the device. Furthermore, the tension and compression sensor 3 can accurately collect the force of the armature after the electromagnet 100 is energized. In addition, the device is also equipped with a force testing mechanism 5 and a displacement testing mechanism 6.

[0046] In the force testing mechanism 5, the first actuator 53 abuts or connects with the armature of the electromagnet 100 to push or pull the armature of the electromagnet 100. The first connector 51 connects the tension / compression sensor 3 to the first actuator 53, ensuring that the tension / compression sensor 3 accurately collects the electromagnetic force of the armature of the electromagnet 100 through the first actuator 53. The first shielding member 52 on the first connector 51 collects the displacement of the armature. The first shielding member 52 moves synchronously with the armature, that is, the movement of the armature can be directly reflected by the first shielding member 52. The displacement of the first shielding member 52 can be accurately collected by the displacement sensor 4. In this embodiment, the force testing mechanism 5 can participate in the testing of the current-force characteristics, displacement-force characteristics, force step characteristics, and force frequency response characteristics of the electromagnet 100.

[0047] In the displacement testing mechanism 6, the driving component 2 is no longer used to provide force. Instead, the elastic component 63 is driven by the pressing component 62. The elastic component 63 can act on the second connecting component 64, which in turn acts on the second actuating component 65. Similarly, the second actuating component 65 abuts against or connects with the armature of the electromagnet 100 to push or pull the armature of the electromagnet 100. The displacement of the armature is accurately reflected by the second blocking component 66 on the second connecting component 64, and the displacement of the second blocking component 66 is further detected by the displacement sensor 4. The displacement testing mechanism 6 can be used to test the frequency response characteristics and displacement step characteristics of the electromagnet 100.

[0048] This device allows for convenient joint measurement of the dynamic and static characteristics of the electromagnet 100, with a high degree of integration and higher testing efficiency. At the same time, the force is applied vertically, effectively avoiding interference from friction on the test results.

[0049] Optionally, the frame 1 includes a platform 11 and a mounting plate 12 disposed on the platform 11. The drive assembly 2 is disposed on the mounting plate 12. The drive assembly 2 includes a motor 21 and a cylinder 22 disposed at one end of the motor 21. The drive end of the cylinder 22 is provided with a cylinder gasket 23, and the cylinder gasket 23 is connected to the tension and compression sensor 3.

[0050] In this embodiment, the mounting plate 12 is erected perpendicular to the platform 11, forming a "T"-shaped structure. The mounting plate 12 can be screwed or welded onto the platform 11. The drive assembly 2 is mounted on the mounting plate 12 along the vertical direction. The drive assembly 2 includes a motor 21, which can be a linear motor, used to directly drive the cylinder 22 to adjust its position in the first direction X. The drive end of the cylinder 22 acts on the tension / compression sensor 3 to pre-apply a test force to the armature of the electromagnet 100 to be tested. At the same time, a cylinder gasket 23 is provided on the drive end of the cylinder 22 to protect the tension / compression sensor 3.

[0051] Furthermore, the mounting plate 12 is provided with a sliding groove 121 extending along the second direction Y, and the cylinder 22 is provided with a sliding rod 221, which slides in the sliding groove 121.

[0052] In this embodiment, the mounting plate 12 has two parallel sliding grooves 121 along the second direction Y. The cylinder 22 is provided with a sliding rod 221 for inserting into the sliding groove 121. The cylinder 22 slides along the extension direction of the sliding groove 121 via the sliding rod 221 to adjust the position of the drive assembly 2 relative to the mounting plate 12 in the second direction Y. In this embodiment, a thread can be provided on one side of the sliding rod 221, and it can be locked by a washer and nut structure to fix the drive assembly 2 after the position adjustment is completed.

[0053] Optionally, the first connecting member 51 is a threaded rod, which is screwed to the tension / compression sensor 3, and the first shielding member 52 is a strip baffle, which is connected to the outer wall of the threaded rod.

[0054] In this embodiment, by screwing the first connector 51 to the tension / compression sensor 3, a certain connection rigidity is maintained, thereby ensuring the accuracy of force acquisition. The first shield 52 is fixedly connected to the outer wall of the first connector 51 at one end, which can be in the form of a threaded connection, and the other end extends cantilevered. The first connector 51 is a rectangular strip plate with a certain rigidity. As the first connector 51 moves along the first direction X, it can accurately reflect the displacement of the armature of the electromagnet 100.

[0055] Optionally, the first actuator 53 is a rod-shaped member, which can abut against the armature or be detachably connected to the armature.

[0056] In this embodiment, the first actuator 53 is a cylindrical rod. In reality, the force generated by different types of electromagnets 100 after being energized causes the armature to move in different directions. For example, the force generated by some electromagnets 100 after being energized will push the armature to move upward. When testing such an electromagnet 100, it is only necessary to make one end of the first actuator 53 abut against the armature. The force generated by the electromagnet 100 after being energized will make the armature move upward. The armature will transmit this force to the tension and compression sensor 3 through the first connector 51. The tension and compression sensor 3 can then measure the magnitude of the output force of the electromagnet 100. In addition, the force generated by some electromagnets 100 after being energized will attract the armature to move downward. Therefore, the relationship of one end of the first actuator 53 abutting against the armature is no longer applicable. Therefore, it is necessary to use a connection form that can transmit tension, such as screw connection or snap connection, between the first actuator 53 and the armature. In this embodiment, the connection between the second actuator 65 and the armature has the same problem as the connection between the first actuator 53 and the armature. Therefore, those skilled in the art can adjust the connection structure between the second actuator 65 and the armature by referring to the connection structure between the first actuator 53 and the armature.

[0057] Optionally, the mounting sleeve 61 is a cylindrical sleeve with an internal thread on its inner wall. The pressing member 62 is screwed into the mounting sleeve 61, and the pressing member 62 can release the elastic member 63 by rotating it in to compress or rotating it out.

[0058] In this embodiment, the side wall of the mounting sleeve 61 is provided with a strip groove for the second blocking member 66 to be opened along the first direction X. The pressing member 62 is threadedly engaged with the inner wall of the mounting sleeve 61. The threaded engagement allows for easy adjustment of the pressing displacement. By rotating and screwing the pressing member 62 in, the elastic member 63 can be gradually squeezed, or by rotating and screwing the pressing member 62 out, the elastic member 63 can be released. The elastic member 63 squeezes the second connecting member 64, causing the armature to reach the pre-test position. The elastic member 63 can be a common spring, which has a stable function and is easy to adapt to the mounting sleeve 61. As a common standard component, the cost of using a common spring is relatively low.

[0059] Furthermore, the pressing member 62 is provided with an "I"-shaped groove 621, which is used to cooperate with the tool to make the pressing member 62 rotate.

[0060] To facilitate the rotation of the pressing part 62 using conventional tools, a straight groove 621 can be provided on the end face of the pressing part 62, and the pressing part 62 can be rotated using a conventional straight screwdriver.

[0061] Optionally, the testing device further includes a fixing component 7, which includes a second drive member 71 mounted on the frame 1 and a support base 72 drivenly connected to the second drive member 71. The second drive member 71 can drive the support base 72 to rise and fall, and the support base 72 is used to fix the electromagnet 100.

[0062] In this embodiment, the electromagnet 100 is fixed by the fixing component 7. Specifically, the support base 72 is used to fix the electromagnet 100. The support base 72 is a rectangular plate with a through hole on its surface. The main body of the electromagnet 100 can be installed on the lower side wall of the rectangular plate by screwing, so that the armature of the electromagnet 100 passes upward through the through hole for contact or connection with the first actuator 53 or the second actuator 65. A second driving member 71 is connected to the side of the support base 72 away from the electromagnet 100. The second driving member 71 is fixed on the platform 11, and the driving end of the second driving member 71 is connected to the support base 72 for driving the support base 72 to move up and down along the first direction X.

[0063] Furthermore, the bottom of the second drive unit 71 is provided with a base 73, which can move relative to the frame 1 along the second direction Y.

[0064] In this embodiment, a guide groove 111 along the first direction X can also be provided on the platform 11, and the base 73 is slidably connected to the guide groove 111 by a sliding pin, ensuring that the fixed component 7 can be adjusted in the first direction X. Of course, in other embodiments, a sliding connection can also be achieved by setting a slider in conjunction with a slide rail. This embodiment does not limit the specific form of the sliding connection.

[0065] Optionally, the displacement sensor 4 is mounted on the frame 1, and the displacement sensor 4 can move along the second direction Y.

[0066] In this embodiment, the displacement sensor 4 is a laser sensor. The displacement sensor 4 can be slidably fitted onto the mounting plate 12 of the frame 1. Similarly, the position of the displacement sensor 4 in the second direction Y can be adjusted by using a slider in conjunction with a slide rail or a guide groove in conjunction with a guide shaft. After the position adjustment is completed, it can be fixed onto the mounting plate 12 by bolts and nuts. This embodiment does not limit the specific form of the sliding fit.

[0067] In this embodiment, anchor bolts are provided at the four bottom corners of the platform 11 to adjust the levelness of the entire device.

[0068] The following details the operating principle of this device in static and dynamic testing of electromagnet 100.

[0069] (I) Testing the current-force characteristics of electromagnet 100

[0070] The electromagnet 100 to be tested is fixed on the support base 72 of the fixing assembly 7. The support base 72 is adjusted to a suitable position by the second driving component 71, so that the first actuator 53 is connected to the armature. The displacement sensor 4 is adjusted so that the first blocking component 52 is located directly below the displacement sensor 4. The armature is moved to different working strokes by the motor 21 of the driving assembly 2. Then, the driving assembly 2 is kept stationary, and a detection current is passed through the electromagnet 100 to be tested. The armature moves and transmits the force to the tension and compression sensor 3. The output force of the electromagnet 100 is measured by the tension and compression sensor 3, thereby obtaining the steady-state current-force characteristics of the electromagnet 100 to be tested.

[0071] (II) Testing the displacement-force characteristics of electromagnet 100

[0072] The electromagnet 100 to be tested is fixed on the support base 72 of the fixing assembly 7. The support base 72 is adjusted to a suitable position by the second driving component 71, so that the first actuator 53 is connected to the armature. The displacement sensor 4 is adjusted so that the first blocking component 52 is directly below the displacement sensor 4. At this time, the driving assembly 2, the tension / compression sensor 3, the force testing mechanism 5, and the armature are rigidly connected. Keeping the current flowing through the electromagnet 100 constant, the displacement of the driving assembly 2 is changed. It can be understood that the tension / compression sensor 3, the force testing mechanism 5, and the armature will also produce the same displacement as the driving assembly 2. The displacement of the first blocking component 52 on the force testing mechanism 5 is measured by the displacement sensor 4, which is to indirectly measure the displacement of the armature. At the same time, the output force of the electromagnet 100 is measured by the tension / compression sensor 3, thereby obtaining the steady-state displacement-force characteristics of the electromagnet 100 to be tested. Then, the current magnitude is changed and multiple measurements are performed.

[0073] (III) Testing the force-current step characteristics of electromagnet 100

[0074] The electromagnet 100 under test is fixed on the support base 72 of the fixing assembly 7. The support base 72 is adjusted to a suitable position by the second driving component 71, so that the first actuator 53 is connected to the armature. The displacement sensor 4 is adjusted so that the first blocking component 52 is directly below the displacement sensor 4. The armature is pushed to the initial test position by the driving assembly 2, and then a step current is passed to the electromagnet 100 under test. The armature moves and transmits the force to the tension and compression sensor 3. The output force of the electromagnet 100 is measured by the tension and compression sensor 3, thereby obtaining the force-current step characteristic of the electromagnet 100 under test.

[0075] (iv) Testing the force-frequency response characteristics of electromagnet 100

[0076] The electromagnet 100 to be tested is fixed on the support base 72 of the fixing assembly 7. The support base 72 is adjusted to a suitable position by the second driving component 71, so that the first actuator 53 is connected to the armature. The displacement sensor 4 is adjusted so that the first blocking component 52 is directly below the displacement sensor 4. The armature is pushed to the initial test position by the driving assembly 2, and then sinusoidal signal currents of different frequencies are passed to the electromagnet 100 to be tested. The armature moves and transmits the force to the tension and compression sensor 3. The output force of the electromagnet 100 is measured by the tension and compression sensor 3, thereby obtaining the force frequency response characteristics of the electromagnet 100 to be tested.

[0077] (V) Testing the displacement-current step characteristics of electromagnet 100

[0078] First, the displacement testing mechanism 6 is fixed on the support base 72 of the fixing component 7. The support base 72 is adjusted to a suitable height using the second driving component 71, and further adjusted along the first direction X to a suitable testing position, ensuring that the second shielding component 66 of the displacement testing mechanism 6 is directly below the displacement sensor 4, and that the second actuator 65 is reliably connected to the armature. The pressing component 62 is adjusted to a suitable position using a flathead screwdriver, maintaining a certain preload. This preload can push the armature to the initial testing position, inputting a step current into the electromagnet 100. The displacement of the second actuator 65 of the displacement testing mechanism 6 is measured by the displacement sensor 4, which indirectly measures the displacement of the armature, thus obtaining the electromagnet's displacement-current step characteristics.

[0079] (vi) Testing the displacement frequency response characteristics of electromagnet 100

[0080] First, the displacement testing mechanism 6 is fixed on the support base 72 of the fixing component 7. The support base 72 is adjusted to a suitable height using the second driving component 71, and further adjusted along the first direction X to a suitable testing position, ensuring that the second shielding component 66 of the displacement testing mechanism 6 is directly below the displacement sensor 4, and that the second actuator 65 is reliably connected to the armature. The pressing component 62 is adjusted to a suitable position using a flathead screwdriver, maintaining a certain preload. This preload can push the armature to the initial testing position. Sinusoidal signal currents of different frequencies are input to the electromagnet 100. The displacement of the second actuator 65 of the displacement testing mechanism 6 is measured by the displacement sensor 4, which indirectly measures the displacement of the armature, thereby obtaining the displacement frequency response characteristics.

[0081] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Test device for detecting the static and dynamic properties of an electromagnet (100), characterized in that include: Rack (1); A drive assembly (2) is disposed on the frame (1), and the drive assembly (2) is driven along a first direction (X); A tension / compression sensor (3) is located at the drive end of the drive assembly (2); Displacement sensor (4) is mounted on the frame (1); The force testing mechanism (5) includes a first connector (51) connected to the tension and compression sensor (3), a first shield (52) disposed on the first connector (51), and a first actuator (53) connected below the first connector (51). The first actuator (53) is used to push or pull the armature of the electromagnet (100). The first shield (52) can move synchronously with the armature. The displacement sensor (4) can detect the position of the first shield (52). The displacement testing mechanism (6) includes a mounting sleeve (61) disposed on the frame (1), a pressing member (62) disposed in the mounting sleeve (61) and moving along the first direction (X), an elastic member (63) drivenly connected to the pressing member (62), a second connecting member (64) connected to the elastic member (63), and a second actuating member (65) connected to the second connecting member (64). The second actuating member (65) is used to push or pull the armature of the electromagnet (100). The second connecting member (64) is provided with a second blocking member (66). The second blocking member (66) can move synchronously with the armature. The displacement sensor (4) can detect the position of the second blocking member (66). The first direction (X) is the vertical direction.

2. The test device of claim 1, wherein, The frame (1) includes a platform (11) and a mounting plate (12) disposed on the platform (11). The drive assembly (2) is disposed on the mounting plate (12). The drive assembly (2) includes a motor (21) and a cylinder (22) disposed at one end of the motor (21). The drive end of the cylinder (22) is provided with a cylinder gasket (23). The cylinder gasket (23) is connected to the tension and compression sensor (3).

3. The test device of claim 2, wherein, The mounting plate (12) is provided with a sliding groove (121) extending along the second direction (Y), and the cylinder (22) is provided with a sliding rod (221), which slides in the sliding groove (121).

4. The test device of claim 1, wherein, The first connecting member (51) is a threaded rod, which is screwed to the tension and compression sensor (3). The first shielding member (52) is a strip baffle, which is connected to the outer wall of the threaded rod.

5. The test device of claim 1, wherein, The first actuator (53) is a rod-shaped member, and the first actuator (53) can abut against the armature or be detachably connected to the armature.

6. The testing apparatus according to claim 1, characterized in that, The testing device further includes a fixing component (7), which includes a second drive member (71) disposed on the frame (1) and a support base (72) drivenly connected to the second drive member (71). The second drive member (71) can drive the support base (72) to rise and fall, and the support base (72) is used to fix the electromagnet (100).

7. The test device of claim 6, wherein, The second drive member (71) has a base (73) at its bottom, which is movable relative to the frame (1) along a second direction (Y).

8. The test device of claim 1, wherein, The mounting sleeve (61) is a cylindrical sleeve, and the inner wall of the mounting sleeve (61) is provided with internal threads. The pressing member (62) is screwed into the mounting sleeve (61), and the pressing member (62) can release the elastic member (63) by rotating and screwing it in or rotating and screwing it out.

9. The test device of claim 8, wherein, The pressing member (62) is provided with an "I"-shaped groove (621), which is used to cooperate with the tool to make the pressing member (62) rotate.

10. The test device of claim 1, wherein, The displacement sensor (4) is mounted on the frame (1) and can move along the second direction (Y).

Images