Vibration testing device and vibration testing method

Abstract

The invention relates to the technical field of vehicle testing, in particular to a vibration testing device and a vibration testing method. The vibration testing device comprises a vibration assembly, a first tool assembly, a second tool assembly and a control assembly. The vibration assembly is used for driving the first tool assembly to reciprocate in the first direction, and the vibration amplitude can be adjusted. The first tool assembly comprises a rotating seat which is used for installing a to-be-tested piece. The second tool assembly is detachably mounted on the rotating seat, and the second tool assembly is used for vertically mounting a to-be-tested piece; the control assembly is used for controlling the vibration assembly. In this way, the vibration amplitude of the to-be-tested piece can be adjusted, and the problem that the vibration amplitude is low is solved; the vibration testing direction of the to-be-tested piece can be adjusted, and the problem that the vibration testing direction is single is solved; a to-be-tested piece can be vertically installed, and the vibration testing effect of the vibration testing device is enhanced.

Description

Technical Field

[0001] The present application relates to the field of vehicle testing technology, and in particular to a vibration testing device and a vibration testing method. Background Art

[0002] Before vehicles and their components leave the factory, vibration testing is required. This not only verifies product conformity but also reveals defects, facilitating product improvement. For example, this testing verifies the mechanical strength and fatigue resistance of the vehicle frame, battery pack, and electric drive system. This allows for the elimination of substandard products, reducing product returns and extending product lifespan. Analyzing substandard products can identify defects and facilitate product improvement.

[0003] In the related art, full-function vibration test devices are large in size, expensive to manufacture, and costly to use. Small vibration test devices are usually driven by motors, have low vibration amplitudes, and only test in a single vibration direction. Summary of the Invention

[0004] The embodiments of the present application aim to provide a vibration testing device and a vibration testing method, so as to at least improve the problems of low vibration amplitude and single vibration testing direction of the vibration testing device, and reduce the cost of use.

[0005] In order to solve the above technical problems, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a vibration testing device, which includes a vibration assembly, a first tooling assembly, a second tooling assembly, and a control assembly; the vibration assembly includes a vibration base, a sliding seat, an adjustment seat, a permanent magnet, and an electromagnet, the sliding seat being slidably disposed on the vibration base along a first direction, the adjustment seat being disposed on the vibration base, and the adjustment seat being used to adjust the position of the adjustment seat relative to the vibration base along the first direction; the permanent magnet is disposed on one of the adjustment seat and the sliding seat, and the electromagnet is disposed on the other of the adjustment seat and the sliding seat, and the electromagnet and the permanent magnet are arranged along the first direction; the first tooling assembly includes a first tooling base and a rotating seat, the first tooling base being disposed on the sliding seat, the rotating seat being rotatably disposed on the first tooling base, and the rotating seat being used to mount a test piece; the second tooling assembly is detachably mounted on the rotating seat, and the second tooling assembly is used to vertically mount the test piece; the control assembly is electrically connected to the electromagnet, and the control assembly is used to power the electromagnet to drive the sliding seat to reciprocate relative to the vibration base according to a preset vibration frequency.

[0007] In some embodiments, the vibration base is provided with a threaded hole along the first direction, and the adjustment seat is threadedly connected to the vibration base through the threaded hole.

[0008] In some embodiments, the vibration assembly includes two permanent magnets and two electromagnets, the two electromagnets are respectively arranged on opposite sides of the sliding seat along the first direction, and the two permanent magnets are respectively arranged on opposite sides of the sliding seat along the first direction.

[0009] In some embodiments, the vibration assembly includes two vibration bases and two sliding bases, and the two sliding bases are respectively connected to two ends of the first tooling base along the second direction, and the second direction is perpendicular to the first direction.

[0010] In some embodiments, the vibration base is provided with a slide groove along the first direction, and the sliding seat is slidably provided in the slide groove; the vibration assembly further includes a ball and a limit block, the ball is rollingly supported between the inner wall of the slide groove and the sliding seat, and the limit block is provided on the vibration base, and the limit block is used to prevent the ball from detaching from the vibration base along a direction parallel to the first direction.

[0011] In some embodiments, the vibration assembly further includes a buffer, and the buffer is provided on a side of the electromagnet facing the permanent magnet, or on a side of the permanent magnet facing the electromagnet.

[0012] In some embodiments, the vibration assembly further includes a pressure sensor, and the pressure sensor is disposed on a side of the electromagnet facing the permanent magnet, or on a side of the permanent magnet facing the electromagnet.

[0013] In some embodiments, the vibration assembly further includes an elastic washer and an elastic pad; the elastic washer is provided on a side of the electromagnet facing the permanent magnet, and the elastic pad is provided on a side of the electromagnet facing away from the permanent magnet; the elastic washer is provided on a side of the permanent magnet facing the electromagnet, and the elastic pad is provided on a side of the permanent magnet facing away from the electromagnet.

[0014] In some embodiments, the first tooling base is provided with a first fixing hole, and the rotating base is provided with a second fixing hole. The first fixing hole and the second fixing hole are used for the same fastener to pass through to limit the rotation angle of the rotating base relative to the first tooling base.

[0015] In some embodiments, the rotating seat is provided with a positioning hole, and the positioning hole is adapted to the object to be tested.

[0016] In some embodiments, the rotating base is provided with a third fixing hole, and the rotating base is used to fix the test piece through the third fixing hole.

[0017] In some embodiments, the second tooling assembly includes a second tooling base and a fixing frame, the second tooling base is detachably mounted on the rotating seat, and the fixing frame is mounted on the second tooling base; the fixing frame encloses an installation space, and the installation space is used to accommodate the test piece.

[0018] In a second aspect, an embodiment of the present application provides a vibration testing method, which is applied to the vibration testing device, and the method includes:

[0019] Installing the test piece on the rotating seat or installing it on the rotating seat through the second fixture assembly;

[0020] Adjusting the rotation angle of the rotating seat relative to the first tooling base so that the vibration test direction of the test piece is parallel to the first direction;

[0021] Adjusting the position of the adjustment seat relative to the vibration base along the first direction, thereby adjusting the vibration amplitude of the sliding seat reciprocating relative to the vibration base along the first direction;

[0022] The test data is input into the control component, and the control component supplies power to the electromagnet based on the test data, thereby driving the sliding seat to reciprocate relative to the vibration base at a preset vibration frequency.

[0023] The vibration testing device and the vibration testing method of the embodiments of the present application realize vibration testing of the test piece by arranging a permanent magnet and an electromagnet to drive the sliding seat to reciprocate relative to the vibration base.

[0024] Among them, the position of the adjustment seat relative to the vibration base along the first direction can be adjusted, and then the vibration amplitude of the sliding seat reciprocating relative to the vibration base along the first direction can be adjusted, that is, the vibration amplitude of the test piece is adjusted to improve the problem of low vibration amplitude; the vibration test index of the vibration amplitude is increased, and the vibration test effect of the vibration testing device is enhanced.

[0025] Among them, the test piece is installed on the rotating seat, and the rotating seat is rotatably set on the first tooling base. The vibration test direction of the test piece can be adjusted. The test piece can be vibration tested in multiple vibration test directions, improving the problem of single vibration test direction.

[0026] Furthermore, the test piece can be vertically mounted on the rotating seat through the second fixture assembly, thereby increasing the vibration testing directions of the test piece by the vibration testing device and enhancing the vibration testing effect of the vibration testing device.

[0027] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0029] Figure 1 1 is a schematic structural diagram of a vibration testing device according to an embodiment of the present application;

[0030] Figure 2 is a partial perspective structural diagram of a vibration testing device according to an embodiment of the present application;

[0031] Figure 3 is an exploded view of a vibration testing device according to an embodiment of the present application;

[0032] Figure 4 is a partial perspective structural diagram of the vibration testing device according to an embodiment of the present application with the second tooling assembly removed;

[0033] Figure 5 It is a structural schematic diagram of the vibration testing device of an embodiment of the present application with the second tooling assembly removed.

[0034] The accompanying drawings in the specific implementation manner are as follows:

[0035] 100. Vibration testing device;

[0036] 1. Vibration component;

[0037] 11. Vibration base; 111. Slide groove; 112. Threaded hole; 12. Sliding seat; 13. Adjustment seat; 14. Permanent magnet; 15. Electromagnet; 16. Ball bearing; 17. Stop block; 18. Buffer; 19. Pressure sensor; 1a. Elastic washer; 1b. Elastic pad; 1c. Elastic contact member;

[0038] 2. First tooling assembly; 21. First tooling base; 211. First fixing hole; 22. Rotating seat; 221. Second fixing hole; 222. Positioning hole; 223. Third fixing hole;

[0039] 3. Second tooling assembly; 31. Second tooling base; 32. Fixing frame; 321. Installation space;

[0040] 4. Scale;

[0041] 200, piece to be tested;

[0042] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should be noted that when an element is described as "fixed on" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other, all within the scope of protection of the present application. In addition, although the functional modules are divided in the device schematic and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a different module division than in the device schematic or in the order in the flow chart.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0045] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0046] In the description of the embodiments of this application, the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In the description of the embodiments of this application, the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0047] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0048] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0049] Please refer to 1 to Figure 3 , an embodiment of the present application provides a vibration testing device 100, which includes a vibration assembly 1, a first tooling assembly 2, a second tooling assembly 3 and a control assembly (not shown). The first tooling assembly 2 is provided on the vibration assembly 1, and the first tooling assembly 2 is used to install the test piece 200. The second tooling assembly 3 is detachably mounted on the rotating seat 22, and the second tooling assembly 3 is used to vertically install the test piece 200. The control assembly is electrically connected to the vibration assembly 1, and the control assembly is used to control the vibration assembly 1 to drive the first tooling assembly 2 to reciprocate, thereby performing a vibration test on the test piece 200.

[0050] For the vibration assembly 1 above, refer to 1 to Figure 3 The vibration assembly 1 includes a vibration base 11, a sliding base 12, an adjustment base 13, a permanent magnet 14 and an electromagnet 15.

[0051] The sliding seat 12 is slidably disposed on the vibration base 11 along the first direction X. For example, the vibration base 11 is provided with a slide groove 111 along the first direction X, and the sliding seat 12 is slidably disposed within the slide groove 111. The slide groove 111 extends along the first direction X, and when the sliding seat 12 slides along the slide groove 111, the sliding seat 12 translates relative to the vibration base 11 along the first direction X. The first tooling assembly 2 is disposed on the sliding seat 12, thereby driving the first tooling assembly 2 to translate relative to the vibration base 11 along the first direction X. Optionally, the slide groove 111 is located on the side of the vibration base 11 facing the first tooling assembly 2.

[0052] In some embodiments, see 1 to Figure 3 The vibration assembly 1 further includes a ball 16, which is supported in a rolling manner between the inner wall of the chute 111 and the sliding seat 12. By supporting the ball 16 between the vibration base 11 and the sliding seat 12, the friction between the two can be reduced. Optionally, the ball 16 is a bearing roller, such as a steel ball, which has high hardness and strength. Among them, at least one of the inner wall of the chute 111 and the sliding seat 12 is provided with a groove extending along the first direction X, and the ball 16 is disposed in the groove and protrudes from the groove to define the position of the ball 16.

[0053] In some embodiments, see 1 to Figure 3 The vibration assembly 1 further includes a stopper 17 disposed on the vibration base 11. The stopper 17 is used to prevent the ball 16 from escaping from the vibration base 11 in a direction parallel to the first direction X. For example, the stopper 17 is disposed at both ends of the vibration base 11 in the first direction X. When the ball 16 rolls to the end of the vibration base 11, the stopper 17 abuts against the ball 16 to prevent the ball 16 from continuing to roll, thereby preventing the ball 16 from escaping from the vibration base 11 in a direction parallel to the first direction X. Optionally, the stopper 17 is disposed in a groove.

[0054] For the above adjustment seat 13, please refer to 1 to Figure 3 The adjustment seat 13 is provided on the vibration base 11, and is used to adjust the position of the adjustment seat 13 relative to the vibration base 11 along the first direction X. For example, the vibration base 11 is provided with a threaded hole 112 along the first direction X, and the adjustment seat 13 is threadedly connected to the vibration base 11 through the threaded hole 112. That is, the adjustment seat 13 is provided with an external thread, and the adjustment seat 13 is threadedly installed in the threaded hole 112. By rotating the adjustment seat 13, the position of the adjustment seat 13 relative to the vibration base 11 along the first direction X can be adjusted.

[0055] Regarding the above-mentioned permanent magnet 14 and electromagnet 15, the permanent magnet 14 is arranged on the adjustment seat 13, and the electromagnet 15 is arranged on the sliding seat 12, and the electromagnet 15 and the permanent magnet 14 are arranged along the first direction X. The control component is electrically connected to the electromagnet 15, and the control component is used to supply power to the electromagnet 15 to drive the sliding seat 12 to slide relative to the vibration base 11. When the electromagnet 15 is supplied with power, the electromagnet 15 generates a magnetic field, and a magnetic attraction or repulsion is generated between the electromagnet 15 and the permanent magnet 14, thereby driving the sliding seat 12 to move relative to the vibration base 11 in a direction parallel to the first direction X. Among them, the direction of the current supplied to the electromagnet 15 can be changed. By frequently changing the direction of the current supplied to the electromagnet 15, the sliding seat 12 can be driven to reciprocate relative to the vibration base 11, that is, the test piece 200 can be driven to reciprocate relative to the vibration base 11. It is understood that the positions of the permanent magnet 14 and the electromagnet 15 can be interchanged, that is, the permanent magnet 14 is disposed on one of the adjustment seat 13 and the sliding seat 12, and the electromagnet 15 is disposed on the other of the adjustment seat 13 and the sliding seat 12. Optionally, the permanent magnet 14 is a magnetic steel, a neodymium magnet, etc., and the electromagnet 15 includes an electromagnetic coil.

[0056] One of the permanent magnet 14 and the electromagnet 15 is disposed on the adjustment seat 13, and the position of one of the permanent magnet 14 and the electromagnet 15 relative to the vibration base 11 along the first direction X can be adjusted, thereby adjusting the vibration amplitude of the reciprocating motion of the sliding seat 12 relative to the vibration base 11 along the first direction X, that is, adjusting the vibration amplitude of the test piece 200, thereby improving the problem of low vibration amplitude. In addition, the test piece 200 can be tested with multiple vibration amplitudes, that is, a vibration test indicator of vibration amplitude is added to the vibration test, thereby enhancing the vibration test effect of the vibration testing device 100. Optionally, the vibration amplitude ranges from 0 to 10 mm, or from 0 to 15 mm.

[0057] In some embodiments, see Figure 4 The mounting platform of the vibration base 11 is provided with a scale 4 extending along the first direction X, which facilitates visual observation of the position of the adjustment base 13 relative to the vibration base 11 along the first direction X. The scale values of the scale 4 may be vibration amplitudes. For example, when the adjustment base 13 is aligned with a certain scale mark on the scale 4, the vibration amplitude of the reciprocating motion of the sliding base 12 relative to the vibration base 11 along the first direction X is the same as the vibration amplitude indicated by the scale mark.

[0058] In some embodiments, see Figure 2 The vibration assembly 1 includes two permanent magnets 14 and two electromagnets 15. The two electromagnets 15 are respectively arranged on opposite sides of the sliding base 12 along the first direction X. The two permanent magnets 14 are respectively arranged on opposite sides of the sliding base 12 along the first direction X. It can be understood that the two electromagnets 15 respectively exert magnetic attraction and repulsion on the two permanent magnets 14, cooperatively driving the sliding base 12 to reciprocate relative to the vibration base 11, thereby enhancing the driving force on the sliding base 12, increasing the acceleration of the sliding base 12, and improving the intensity of the vibration test. Moreover, because the two permanent magnets 14 are respectively arranged on opposite sides of the sliding base 12 along the first direction X, when the sliding base 12 reciprocates relative to the vibration base 11, one group of permanent magnets 14 and electromagnets 15 move away from each other, while the other group of permanent magnets 14 and electromagnets 15 move closer to each other. This ensures that the time for the forward and return strokes of the sliding base 12 is the same. That is, the vibrations generated on the test piece 200 during the forward and return strokes of the sliding base 12 are both effective vibrations, thereby enhancing the vibration test effect. In this embodiment, the vibration assembly 1 includes two adjustment seats 13 , and two permanent magnets 14 are respectively disposed on the two adjustment seats 13 ; or one permanent magnet 14 is disposed on the adjustment seat 13 , and the other permanent magnet 14 is disposed on the vibration base 11 .

[0059] In some embodiments, see Figure 2The vibration assembly 1 further includes a buffer 18, which is provided on the side of the permanent magnet 14 facing the electromagnet 15. It is understandable that the buffer 18 can also be provided on the side of the electromagnet 15 facing the permanent magnet 14, or both the permanent magnet 14 and the electromagnet 15 are provided with a buffer 18. By providing the buffer 18, the collision between the permanent magnet 14 and the electromagnet 15 can be mitigated, noise can be reduced, and the service life of the permanent magnet 14 and the electromagnet 15 can be extended. Optionally, the buffer 18 is a straight spring. Optionally, the buffer 18 is mounted on the permanent magnet 14 or the electromagnet 15 by screws or bolts.

[0060] In some embodiments, see Figure 2 The vibration component 1 further includes a pressure sensor 19, which is disposed on a side of the electromagnet 15 facing the permanent magnet 14. It is understandable that the pressure sensor 19 may also be disposed on a side of the permanent magnet 14 facing the electromagnet 15. The pressure sensor 19 is used to detect the pressure between the electromagnet 15 and the permanent magnet 14. The control component obtains the pressure between the electromagnet 15 and the permanent magnet 14 through the pressure sensor 19. When the pressure is too high, the vibration test can be suspended to improve the problem of damage to the electromagnet 15 and the permanent magnet 14 caused by the excessive pressure between the electromagnet 15 and the permanent magnet 14, thereby extending the service life of the electromagnet 15 and the permanent magnet 14.

[0061] In some embodiments, see Figure 2 The buffer member 18 is disposed on the side of the permanent magnet 14 facing the electromagnet 15, and the pressure sensor 19 is disposed on the side of the electromagnet 15 facing the permanent magnet 14. The buffer member 18 and the pressure sensor 19 are disposed opposite each other. This alleviates the problem of the permanent magnet 14 striking the pressure sensor 19 and causing damage to the pressure sensor 19.

[0062] In some embodiments, see Figure 2The vibration assembly 1 also includes an elastic washer 1a and an elastic pad 1b. The elastic washer 1a is provided on the side of the electromagnet 15 facing the permanent magnet 14, and the elastic pad 1b is provided on the side of the electromagnet 15 facing away from the permanent magnet 14. The elastic washer 1a is provided on the side of the permanent magnet 14 facing the electromagnet 15, and the elastic pad 1b is provided on the side of the permanent magnet 14 facing the electromagnet 15. When a force is generated between the permanent magnet 14 and the electromagnet 15, the permanent magnet 14 exerts a force on the adjustment seat 13, and the electromagnet 15 exerts a force on the sliding seat 12. The frequent switching between magnetic attraction and repulsion between the permanent magnet 14 and the electromagnet 15 causes the permanent magnet 14 to vibrate relative to the adjustment seat 13, and the electromagnet 15 to vibrate relative to the sliding seat 12. Over time, both the permanent magnet 14 and the electromagnet 15 will become loose, generating noise and affecting the results of the vibration test, while also shortening the service life of the permanent magnet 14 and the electromagnet 15. In this embodiment, the permanent magnet 14 and the electromagnet 15 are elastically mounted on the adjustment seat 13 and the sliding seat 12, respectively, via an elastic washer 1a and an elastic pad 1b. For example, the sides of the elastic washer 1a and the elastic pad 1b facing away from the electromagnet 15 are both abutted against the sliding seat 12, while the sides of the elastic washer 1a and the elastic pad 1b facing away from the permanent magnet 14 are both abutted against the adjustment seat 13. This helps to alleviate the problem of the permanent magnet 14 and the electromagnet 15 being easily loosened. Optionally, the elastic washer 1a and the elastic pad 1b are made of rubber.

[0063] In some embodiments, see Figure 2 The elastic washer 1a provided on the permanent magnet 14 avoids the buffer 18, while the elastic washer 1a provided on the electromagnet 15 avoids the pressure sensor 19. For example, the elastic washer 1a provided on the permanent magnet 14 surrounds the buffer 18 and is spaced apart from it, while the elastic washer 1a provided on the electromagnet 15 surrounds the pressure sensor 19 and is spaced apart from it. As a result, the elastic washer 1a, pressure sensor 19, and buffer 18 do not interfere with each other.

[0064] In some embodiments, see Figure 2 The vibration assembly 1 further includes an elastic contact member 1c, which is disposed on the side of the buffer member 18 facing away from the permanent magnet 14. The elastic contact member 1c is used to contact the pressure sensor 19, thereby increasing the contact area with the pressure sensor 19 and improving the problem of the pressure sensor 19 being easily damaged due to the small contact area between the buffer member 18 and the pressure sensor 19. Furthermore, the hardness of the elastic contact member 1c is lower than that of the buffer member 18. For example, the elastic contact member 1c is made of rubber and the buffer member 18 is a metal spring, which helps to reduce the probability of damage to the pressure sensor 19.

[0065] For the first tooling component 2 above, see Figures 1 to 3The first tooling assembly 2 includes a first tooling base 21 and a rotating base 22. The first tooling base 21 is provided on the sliding base 12, and the rotating base 22 is rotatably provided on the first tooling base 21. The rotating base 22 is used to mount the test piece 200. By rotating the rotating base 22, the vibration test direction of the test piece 200 can be adjusted, and the vibration test of the test piece 200 can be performed in multiple vibration test directions, thereby improving the problem of a single vibration test direction. Optionally, the first tooling base 21 is detachably connected to the sliding base 12 by screws or bolts. Optionally, the rotating base 22 is rotatably mounted on the first tooling base 21 by a bearing. Optionally, the rotation axis of the rotating base 22 is perpendicular to the first direction X.

[0066] In some embodiments, see 3 and Figure 5 The first tooling base 21 is provided with a first fixing hole 211, and the rotating base 22 is provided with a second fixing hole 221. The first fixing hole 211 and the second fixing hole 221 are used to pass through the same fastener to limit the rotation angle of the rotating base 22 relative to the first tooling base 21. For example, the first fixing hole 211 is a threaded hole, the second fixing hole 221 is a through hole, and the fastener is a screw. The fastener passes through the second fixing hole 221 and is threadedly connected to the first tooling base 21 through the first fixing hole 211, thereby limiting the rotation angle of the rotating base 22 relative to the first tooling base 21, and improving the problem of the rotating base 22 rotating relative to the first tooling base 21 during the vibration test. It is understandable that the number of the first fixing hole 211 and / or the second fixing hole 221 is multiple, and they are arranged around the rotation axis of the rotating base 22. When it is necessary to adjust the rotation angle of the rotating base 22 relative to the first tooling base 21, the fasteners passing through both the first fixing holes 211 and the second fixing holes 221 are removed, and the rotating base 22 can rotate freely relative to the first tooling base 21. After the rotation angle is adjusted, the fasteners are passed through the interconnected first fixing holes 211 and the second fixing holes 221 to further define the rotation angle of the rotating base 22 relative to the first tooling base 21. It will be understood that the limited rotation angle of the rotating base 22 relative to the first tooling base 21 depends on the number and position of the first fixing holes 211 and the second fixing holes 221, which will not be further described here.

[0067] In some embodiments, see Figure 4 and Figure 5 The rotating base 22 is provided with a positioning hole 222 that is adapted to the test piece 200. For example, the test piece 200 has two cylindrical portions, and the rotating base 22 is provided with two positioning holes 222 corresponding to the two cylindrical portions. When the two cylindrical portions are respectively inserted into the two positioning holes 222, the angle of the test piece 200 relative to the rotating base 22 is unique, making it easy to quickly install the test piece 200 on the rotating base 22 at the correct angle.

[0068] In some embodiments, see Figure 5 The rotating base 22 is provided with a third fixing hole 223, and the rotating base 22 is used to fix the test piece 200 through the third fixing hole 223. For example, the third fixing hole 223 is a screw hole. After passing through the test piece 200, a screw is threadedly connected to the rotating base 22 through the third fixing hole 223, thereby fixing the test piece 200 to the rotating base 22, thereby improving the problem of the test piece 200 being separated from the rotating base 22 during vibration testing.

[0069] In some embodiments, see Figure 1 The vibration assembly 1 includes two vibration bases 11 and two sliding bases 12. The two sliding bases 12 are respectively connected to the ends of the first tooling base 21 along the second direction Y, which is perpendicular to the first direction X. The first tooling base 21 is slidably mounted on the mounting platform of the vibration base 11 by the two sliding bases 12, thereby enhancing the stability of the reciprocating motion of the first tooling assembly 2. It is understood that both vibration assemblies 1 can include permanent magnets 14 and electromagnets 15 to enhance the driving force of the first tooling assembly 2. Optionally, the rotation axis of the rotating base 22 is perpendicular to the first direction X and the second direction Y.

[0070] In some embodiments, see Figure 3 The second tooling assembly 3 includes a second tooling base 31 and a fixing frame 32. The second tooling base 31 is detachably mounted on the rotating base 22, and the fixing frame 32 is provided on the second tooling base 31. The fixing frame 32 encloses an installation space 321 for accommodating the test piece 200. It will be appreciated that the installation space 321 is adapted to accommodate the test piece 200. When the test piece 200 is placed in the installation space 321, the test piece 200 is positioned at a unique angle relative to the fixing frame 32, facilitating quick installation of the test piece 200 at the correct angle on the fixing frame 32. Optionally, the second tooling base 31 is detachably connected to the rotating base 22 via screws or bolts. Optionally, the test piece 200 is fixed to the second tooling assembly 3 via screws or bolts.

[0071] The second fixture assembly 3 is used to vertically mount the test piece 200. Specifically, when the test piece 200 is mounted on the second fixture assembly 3, compared to when mounted on the first fixture assembly 2, the test piece 200 rotates relative to the rotating base 22 about an axis perpendicular to the rotating base 22's rotational axis. For example, when transferring the test piece 200 from the first fixture assembly 2 to the second fixture assembly 3, the test piece 200 must rotate 90 degrees about the horizontal axis. By vertically mounting the test piece 200, the vibration testing apparatus 100 increases the number of vibration testing directions for the test piece 200, enhancing the vibration testing effectiveness of the vibration testing apparatus 100.

[0072] In some embodiments, the first tooling assembly 2 and the second tooling assembly 3 include multiple models. Different models of the first tooling assembly 2 and the second tooling assembly 3 are matched with different pieces to be tested 200, so as to be able to adapt to multiple pieces to be tested 200.

[0073] The control assembly is configured to drive the sliding base 12 to reciprocate relative to the vibration base 11 at a preset vibration frequency. For example, by controlling the frequency at which the current supplied to the electromagnet 15 changes direction, the control assembly can drive the sliding base 12 to reciprocate relative to the vibration base 11 at a preset vibration frequency, thereby driving the sliding base 12 to reciprocate relative to the vibration base 11 at a preset vibration frequency. Optionally, the control assembly is a computer, single-chip microcomputer, or other microcontroller. Optionally, the preset vibration frequency is 5 to 2000 Hz.

[0074] Among them, the voltage and current supplied to the electromagnet 15 need to be compatible with the vibration frequency, vibration amplitude and the mass of the test piece 200. To ensure that the vibration test is carried out according to the preset vibration frequency and preset vibration amplitude, a comparison table of the supply voltage, supply current, vibration frequency, vibration amplitude and the mass of the test piece 200 can be pre-stored. By inputting the vibration frequency, vibration amplitude and the mass of the test piece 200 into the control component, the control component finds the corresponding supply voltage and supply current according to the comparison table, and supplies power to the electromagnet 15 according to the supply voltage, supply current and vibration frequency, so as to ensure that the vibration test is carried out according to the preset vibration frequency and preset vibration amplitude. The vibration frequency supplied to the electromagnet 15 is the frequency of the change in the direction of the current. The comparison table can be obtained through laboratory testing, and the vibration frequency, vibration amplitude and the mass of the test piece 200 in the comparison table can all be range data. Optionally, the mass range of the test piece 200 is 0.5 to 50 kg.

[0075] In a second aspect, an embodiment of the present application provides a vibration testing method, which is applied to a vibration testing device 100, and the method includes:

[0076] S100 : Mounting the test piece 200 on the rotating seat 22 or mounting it on the rotating seat 22 through the second fixture assembly 3 .

[0077] Depending on the test requirements, the test piece 200 is mounted on the rotating base 22 or vertically mounted on the second fixture assembly 3. For example, if the test piece 200 is placed horizontally, when a vibration test is required on the test piece 200 in the horizontal direction, the second fixture assembly 3 is removed from the rotating base 22 and the test piece 200 is mounted on the rotating base 22. When a vibration test is required on the test piece 200 in the vertical direction, the second fixture assembly 3 is mounted on the rotating base 22 and the test piece 200 is mounted on the second fixture assembly 3.

[0078] S200 : adjusting the rotation angle of the rotating seat 22 relative to the first tooling base 21 so that the vibration test direction of the test piece 200 is parallel to the first direction X.

[0079] Remove the fasteners that are inserted through the first fixing hole 211 and the second fixing hole 221 at the same time; rotate the rotating seat 22 relative to the first tooling base 21 until the vibration test direction of the test piece 200 is parallel to the first direction X; find the first fixing hole 211 and the second fixing hole 221 that are connected to each other, and insert the fasteners through the first fixing hole 211 and the second fixing hole 221 that are connected to each other. During this process, the rotating seat 22 can be slightly rotated.

[0080] S300 : adjusting the position of the adjustment seat 13 relative to the vibration base 11 along the first direction X, thereby adjusting the vibration amplitude of the sliding seat 12 reciprocating along the first direction X relative to the vibration base 11 .

[0081] Rotate the adjustment base 13 and observe the scale 4. When the adjustment base 13 is aligned with the target scale, the vibration amplitude of the sliding base 12 reciprocating relative to the vibration base 11 along the first direction X is the vibration amplitude indicated by the target scale.

[0082] S400: inputting the test data into the control component, the control component supplies power to the electromagnet 15 based on the test data, and then drives the sliding seat 12 to reciprocate relative to the vibration base 11 at a preset vibration frequency.

[0083] The test data includes a preset vibration frequency, a preset vibration amplitude, and the mass of the test piece 200. After the test data is input, the control component searches the corresponding supply voltage and supply current according to the comparison table, and powers the electromagnet 15 based on the supply voltage, supply current, and preset vibration frequency, causing the sliding seat 12 to vibrate relative to the vibration base 11 at the preset vibration amplitude and preset vibration frequency. This, in turn, drives the sliding seat 12 to reciprocate relative to the vibration base 11 at the preset vibration frequency. This, in turn, drives the test piece 200 to vibrate at the preset vibration frequency and preset vibration frequency. The preset vibration amplitude is the vibration amplitude in step S300.

[0084] During the test, the test can be paused at any time, and the vibration test direction of the test piece 200 can be changed, or the test data can be changed to perform a new round of vibration testing. If the actual vibration frequency of the test piece 200 is different from the preset vibration frequency, the test data can be modified, and the first fixture assembly 2, the second fixture assembly 3, and the test piece 200 can be checked for correct installation to correct the actual vibration frequency of the test piece 200.

[0085] In some embodiments, the test data also includes acceleration. This acceleration refers to the acceleration of the test piece 200. By limiting the acceleration, the problem of excessive force between the test piece 200 and the first fixture assembly 2 or the second fixture assembly 3 due to excessive acceleration can be alleviated, thereby extending the service life of the first fixture assembly 2 or the second fixture assembly 3. It can also alleviate the problem of poor vibration test results due to insufficient acceleration. Optionally, the acceleration range can be 0.2 to 2 g.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Based on the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present application as described above. For the sake of simplicity, they are not provided in detail. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vibration testing device, characterized in that: include: A vibration assembly includes a vibration base, a sliding base, an adjustment base, a permanent magnet, and an electromagnet. The sliding base is slidably disposed on the vibration base along a first direction. The adjustment base is disposed on the vibration base, and the adjustment base is used to adjust the position of the adjustment base relative to the vibration base along the first direction. The permanent magnet is disposed on one of the adjustment base and the sliding base, and the electromagnet is disposed on the other of the adjustment base and the sliding base. The electromagnet and the permanent magnet are arranged along the first direction. A first tooling assembly includes a first tooling base and a rotating base, wherein the first tooling base is provided on the sliding base, and the rotating base is rotatably provided on the first tooling base, and the rotating base is used to mount the test piece; A second tooling assembly is detachably mounted on the rotating seat, and the second tooling assembly is used for vertically mounting the test piece; A control component is electrically connected to the electromagnet, and the control component is used to supply power to the electromagnet to drive the sliding seat to reciprocate relative to the vibration base at a preset vibration frequency.

2. The vibration testing device according to claim 1, characterized in that: The vibration base is provided with a threaded hole along the first direction, and the adjustment seat is threadedly connected to the vibration base through the threaded hole.

3. The vibration testing device according to claim 1, wherein: The vibration assembly includes two permanent magnets and two electromagnets. The two electromagnets are respectively arranged on two opposite sides of the sliding seat along the first direction. The two permanent magnets are respectively arranged on two opposite sides of the sliding seat along the first direction.

4. The vibration testing device according to claim 1, wherein: The vibration assembly includes two vibration bases and two sliding bases. The two sliding bases are respectively connected to two ends of the first tooling base along a second direction, and the second direction is perpendicular to the first direction.

5. The vibration testing device according to claim 1, characterized in that: The vibration base is provided with a slide groove along the first direction, and the sliding seat is slidably arranged in the slide groove; The vibration assembly also includes a ball and a limit block. The ball is rolled and supported between the inner wall of the slide groove and the sliding seat. The limit block is arranged on the vibration base. The limit block is used to prevent the ball from escaping from the vibration base along the first direction parallel to the first direction.

6. The vibration testing device according to claim 1, characterized in that: The vibration assembly further includes a buffer member, which is provided on a side of the electromagnet facing the permanent magnet, or on a side of the permanent magnet facing the electromagnet; And / or, the vibration component further includes a pressure sensor, and the pressure sensor is provided on a side of the electromagnet facing the permanent magnet, or on a side of the permanent magnet facing the electromagnet.

7. The vibration testing device according to claim 1, characterized in that: The vibration assembly also includes an elastic washer and an elastic pad; The elastic washer is provided on one side of the electromagnet facing the permanent magnet, and the elastic pad is provided on one side of the electromagnet facing away from the permanent magnet; The elastic washer is provided on one side of the permanent magnet facing the electromagnet, and the elastic pad is provided on one side of the permanent magnet facing away from the electromagnet.

8. The vibration testing device according to claim 1, characterized in that: The first tooling base is provided with a first fixing hole, and the rotating base is provided with a second fixing hole. The first fixing hole and the second fixing hole are used for the same fastener to pass through to limit the rotation angle of the rotating base relative to the first tooling base.

9. The vibration testing device according to claim 1, characterized in that: The rotating seat is provided with a positioning hole, and the positioning hole is adapted to the piece to be tested; And / or, the rotating base is provided with a third fixing hole, and the rotating base is used to fix the test piece through the third fixing hole.

10. The vibration testing device according to claim 1, characterized in that: The second tooling assembly includes a second tooling base and a fixing frame, the second tooling base is detachably mounted on the rotating base, and the fixing frame is mounted on the second tooling base; The fixing frame encloses an installation space, and the installation space is used to accommodate the test piece.

11. A vibration testing method, applied to the vibration testing device according to any one of claims 1 to 10, characterized in that: The method comprises: Installing the test piece on the rotating seat or installing it on the rotating seat through the second fixture assembly; Adjusting the rotation angle of the rotating seat relative to the first tooling base so that the vibration test direction of the test piece is parallel to the first direction; Adjusting the position of the adjustment seat relative to the vibration base along the first direction, thereby adjusting the vibration amplitude of the sliding seat reciprocating relative to the vibration base along the first direction; The test data is input into the control component, and the control component supplies power to the electromagnet based on the test data, thereby driving the sliding seat to reciprocate relative to the vibration base at a preset vibration frequency.

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