Vibration test fixture

Abstract

The present invention discloses a vibration test fixture, comprising: a vibration table with a plurality of fixed positions, each of which is suitable for mounting a test object; a frame, one end of which is detachably connected to some of the fixed positions, forming a clamping space for accommodating the test object and provided with two first fastening mechanisms, the two first fastening mechanisms being respectively provided at both ends of the clamping space along an X direction parallel to the vibration table, each of the first fastening mechanisms being provided with two second fastening mechanisms suitable for clamping the test object, the two first fastening mechanisms being suitable for adjusting their positions closer to and further away from each other in the X direction and being capable of being locked. The present invention can adjust the clamping force by clamping the test object through the first fastening mechanism and adjusting the position of the second fastening mechanism in the Y direction, can firmly clamp the test object, can adapt to different test objects, facilitates the disassembly and assembly of the test object, and has high vibration transmission efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of test fixtures, and in particular to a vibration test fixture. Background Art

[0002] Vibration tests can simulate the actual state of a product under vibration conditions. Various vibration tests are performed on products during research and development, production, and before use. When conducting vibration environment tests on a product, it is necessary to connect the product to the vibration table with the help of a fixture, and transfer the excitation from the vibration table to the tested product through the fixture. In order to simulate the vibration environment more realistically and transfer the excitation to the tested product as much as possible, the design of the test fixture is particularly important. The tooling fixtures used for vibration tests in related technologies mostly adopt plate forming and welding structures, which have disadvantages such as poor versatility, poor clamping effect, and low vibration transmission efficiency. Summary of the Invention

[0003] In response to the above problems, the purpose of the present invention is to provide a vibration test fixture, which is designed to clamp the test object through a first fastening mechanism, and the second fastening mechanism can adjust the clamping force by adjusting the position in the Y direction, can firmly clamp the test object, and can adapt to different test objects, facilitate the disassembly and assembly of the test object, and have high vibration transmission efficiency.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A vibration test fixture comprises: a vibration table having a plurality of fixed positions arranged in an array, some of the fixed positions being suitable for mounting a test object; a frame having one end detachably connected to some of the fixed positions, a clamping space for accommodating the test object formed therein and provided with two first fastening mechanisms, the two first fastening mechanisms being respectively arranged at two ends of the clamping space along an X direction parallel to the vibration table, each of the first fastening mechanisms being provided with two second fastening mechanisms suitable for clamping the test object, the two first fastening mechanisms being suitable for adjusting their positions closer to and farther away from each other in the X direction and being capable of being locked.

[0006] According to some embodiments of the present invention, the two second fastening mechanisms are adapted to adjust their positions closer to and farther from each other in a Y direction parallel to the vibration table and can be locked, and the X direction is orthogonal to the Y direction.

[0007] According to some embodiments of the present invention, the first fastening mechanism is configured as a first fastening beam, and both ends of the first fastening beam are movably connected to the frame along the X direction. The second fastening mechanism includes a first plate and a second plate fixedly connected to each other perpendicularly. One side of the first plate is movably connected to the inner side of the first fastening beam along the Y direction, and the other side is suitable for abutting the test object in the X direction. The second plate extends into the clamping space and is suitable for abutting the test object in the Y direction. At least two of the first fastening beams are provided at opposite ends of the frame along the X direction and spaced apart along the Z direction perpendicular to the vibration table.

[0008] According to some embodiments of the present invention, two first fastening beams located in the same moving plane are connected with a first tightening screw, and the first tightening screw is used to tighten the two first fastening beams in the X direction.

[0009] According to some embodiments of the present invention, there are at least two first tightening screws and the first tightening screws are divided into two groups. The two groups of first tightening screws are respectively located at two ends of the clamping space along the Y direction.

[0010] According to some embodiments of the present invention, the frame includes at least four support columns extending along the Z direction and two groups of transverse fixed beams extending along the X direction. Four of the at least four support columns are distributed in a rectangular shape, the length direction of the rectangle is consistent with the X direction, and the width direction is consistent with the Y direction. Two support columns located on the same straight line along the X direction are connected by a group of transverse fixed beams. The side of the transverse fixed beam close to the clamping space is connected to the end of the first fastening beam, and the two transverse fixed beams connected to the same first fastening beam are located on the same plane parallel to the vibration table surface. The transverse fixed beam is connected to the support columns and the first fastening beam at each connection position through a bracket angle.

[0011] According to some embodiments of the present invention, the support column, the transverse fixing beam and the first fastening beam are all made of square aluminum profiles, and a strip opening extending along the length direction is opened in the middle position of the outer peripheral side surface, and the transverse fixing beam is respectively connected to the support column and the first fastening beam by passing bolts through the bracket corners and the strip opening; each first plate is connected to a sliding ring that can be slidably mounted on the first fastening beam, and the sliding ring is connected to the strip opening on the side of the first fastening beam away from the clamping space by bolts.

[0012] According to some embodiments of the present invention, a second fastening beam suitable for adjusting the position in the Z direction and capable of being locked is provided at one end of the frame away from the vibration table, and the second fastening beam is used to abut against the side of the test object away from the vibration table to clamp the test object.

[0013] According to some embodiments of the present invention, the second fastening beam includes two first movable beams extending along the X direction, the two ends of the first movable beams are movably connected to the two support columns along the Z direction, and the two first movable beams are connected by a plurality of second movable beams on one side close to the clamping space.

[0014] According to some embodiments of the present invention, the first movable beam and the second fastening beam are made of square aluminum profiles, and a strip opening extending along the length direction is opened in the middle position of the outer side surface. Bolts are used to pass through the bracket corners and the strip opening to connect the first movable beam to the support column and the second movable beam respectively.

[0015] According to some embodiments of the present invention, the first movable crossbeam and the transverse fixed beam located in the same movable plane are connected with a second tightening screw, and the second tightening screw is used to apply a force toward the test object to the first movable crossbeam in the Z direction and lock the two first movable crossbeams moved into place.

[0016] According to some embodiments of the present invention, there are at least two second tightening screws divided into two groups, and the two groups of second tightening screws are respectively located at two ends of the clamping space along the X direction.

[0017] According to some embodiments of the present invention, the lower end of the frame is connected to the fixing position by connecting multiple sheet metal parts; the fixing position is configured as a threaded fixing hole, the sheet metal parts and the test object are detachably connected to the threaded fixing holes by bolts, and the sizes of all the threaded fixing holes and the bolts used are consistent.

[0018] According to some embodiments of the present invention, two base adapters are detachably arranged at intervals through a plurality of threaded fixing holes suitable for installing the test object, and a plurality of guide rail members are detachably connected between the two base adapters on one side close to the clamping space, wherein the extension direction of the guide rail members is orthogonal to the extension direction of the base adapter, and the guide rail members are suitable for installing the test object and for moving along the extension direction of the base adapter.

[0019] According to some embodiments of the present invention, the guide rail component is detachably connected to the base adapter component via bolts.

[0020] According to some embodiments of the present invention, an extending direction of the base adapter is consistent with the Y direction, and an extending direction of the guide rail is consistent with the X direction.

[0021] The present invention has at least the following advantages due to the adoption of the above technical solution:

[0022] 1. Multiple fixing positions on the vibration plane are arranged in an array. By spacing the fixing positions at different distances, test objects of various sizes can be installed.

[0023] 2. The frame and the vibration table are detachable. By detaching the frame, the test object can be easily installed in place, especially for large test objects;

[0024] Third, the two first fastening mechanisms are adapted to adjust their positions in the X direction so as to be closer to or farther from each other. When the two first fastening mechanisms are sufficiently moved closer to each other, they can apply a force in the X direction to effectively clamp the test object. The two second fastening mechanisms are adapted to adjust their positions in the Y direction so as to be closer to or farther from each other. When the two second fastening mechanisms are sufficiently moved closer to each other, they can also effectively clamp the test object and apply a force in the Y direction to the object to achieve auxiliary fixation in the Y direction. That is, the present invention can effectively clamp the test object in the orthogonal X and Y directions, and the clamping force is adjustable. Therefore, it has the beneficial effects of adapting to the needs of vibration tests of different scales, having a low first-order resonant frequency, good vibration transfer characteristics, and effectively controlling test quality and test costs.

[0025] Fourth, the present invention can sequentially perform vibration tests on the test object in the X and Y directions. After the X-direction vibration test, the test object is loosened by adjusting the position of the first fastening mechanism, and then the test object is rotated 90 degrees and re-clamped and fixed, and then the Y-direction vibration test can be performed.

[0026] 5. Since the clamping position is adjustable, it can adapt to test objects of various sizes, thus having the beneficial effect of strong versatility;

[0027] 6. The test object can be clamped and released by moving the first and second fastening mechanisms, which has the beneficial effect of convenient operation;

[0028] 7. Since the vibration test fixture provided by the present invention has high versatility, it is unnecessary to manufacture vibration test fixtures of various specifications, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of a vibration test fixture according to some embodiments of the present invention;

[0030] Figure 2 is a schematic structural diagram of a vibration test fixture from another perspective in some embodiments of the present invention;

[0031] Figure 3 Schematic diagram of the structure of the base adapter, guide rail and vibration table of the vibration test fixture of some embodiments of the present invention;

[0032] Figure 4 yes Figure 1 Enlarged view of point A in the middle.

[0033] Markings in the accompanying drawings:

[0034] 1 is a sheet metal part;

[0035] 2 is the vibration table;

[0036] 3 is the second tightening screw;

[0037] 4 is the first tightening screw;

[0038] 5 is a second fastening mechanism;

[0039] 6 is the bracket angle;

[0040] 7 is a first fastening beam;

[0041] 8 is a second fastening beam;

[0042] 9 is a base adapter;

[0043] 10 is a guide rail member;

[0044] 11 is a threaded fixing hole;

[0045] 12 is the frame;

[0046] 13 is the direction identifier. DETAILED DESCRIPTION

[0047] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0049] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "assembly," "disposition," and "connection" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0050] In related technologies, the tooling fixtures used for vibration testing mostly adopt plate forming and welding structures, which have disadvantages such as poor versatility, poor clamping effect and low vibration transmission efficiency.

[0051] In view of this, the present invention provides a vibration test fixture, which is designed to clamp the test object through a first fastening mechanism, and the second fastening mechanism can adjust the clamping force by adjusting the position in the Y direction. It can firmly clamp the test object, adapt to different test objects, facilitate the disassembly and assembly of the test object, and has high vibration transmission efficiency.

[0052] Reference Figures 1 to 4 As shown, the vibration test fixture provided by the embodiment of the present invention is suitable for clamping and fixing the vibration and impact tests of complete equipment and electrical components. The vibration test fixture includes a vibration table 2 and a frame 12. The vibration table 2 is provided with a plurality of fixed positions arranged in an array, and some of the fixed positions are suitable for installing the test object; one end of the frame 12 is detachably connected to some of the fixed positions, and a clamping space for accommodating the test object is formed inside and is provided with two first fastening mechanisms. The two first fastening mechanisms are respectively provided at the two ends of the clamping space along an X direction parallel to the vibration table 2. Each first fastening mechanism is provided with two second fastening mechanisms 5. The second fastening mechanisms 5 are suitable for clamping the test object. The two second fastening mechanisms 5 are suitable for adjusting their positions closer to and farther away from each other in a Y direction parallel to the vibration table 2 and can be locked.

[0053] In the above embodiment, the multiple fixing positions of the vibration plane are arranged in an array. By spacing the fixing positions at different distances, test objects of various sizes can be installed. The frame 12 is detachably connected to the vibration table 2. By detaching the frame 12, the test object can be easily installed, especially larger test objects.

[0054] The two first fastening mechanisms are adapted to adjust their positions in the X-direction toward and away from each other. When they are sufficiently close together, they can exert a force in the X-direction that effectively holds the test object. The two second fastening mechanisms 5 are adapted to clamp the test object. The present invention can adjust its positions in the orthogonal X-direction to effectively hold the test object, and the clamping force is adjustable. Therefore, it has the beneficial effects of adapting to the needs of vibration tests of varying scales, achieving a low first-order resonant frequency, excellent vibration transmission characteristics, and effectively controlling test quality and costs.

[0055] Because the clamping position is adjustable, it can accommodate test objects of various sizes, thus offering the beneficial effect of high versatility. Furthermore, the test object can be clamped and released simply by moving the first and second fastening mechanisms 5, resulting in convenient operation. Due to the high versatility of the vibration test fixture provided by the present invention, the manufacture of various vibration test fixtures can be avoided, thereby reducing production costs.

[0056] When the two first fastening mechanisms are moved into position and can be locked, and the two second fastening mechanisms 5 are moved into position and locked, the vibration test in the X direction can be carried out.

[0057] When it is necessary to perform a vibration test on the test object in the Y direction, the test object can be rotated 90 degrees along the plane direction parallel to the vibration table 2 on the basis of the vibration test in the X direction, and after the test object is fixed, the vibration test on the test object in the Y direction can be started.

[0058] It should be noted that the vibration table 2 in the vibration test fixture provided in the embodiment of the present invention is a part of the vibration test device, which is used to complete vibration tests in the X and Y directions, for example but not limited to. It is mainly composed of a slide support, a support guide structure, a slide plate, an oil tank, a hydraulic system, connecting parts and other parts.

[0059] Furthermore, in one embodiment, the two second fastening mechanisms 5 are adapted to be positioned closer to or further from each other in a Y direction parallel to the vibration table 2 and are lockable, with the X direction being orthogonal to the Y direction. Because the two second fastening mechanisms 5 are adapted to be positioned closer to or further from each other in the Y direction, when they are moved sufficiently close together, they can effectively clamp the test object in the Y direction and apply a force in the Y direction. That is, the present invention can adapt to and effectively clamp different test objects in the orthogonal X and Y directions, and the clamping force is adjustable. In the present invention, the two second fastening mechanisms 5 serve to assist in securing the test object in the Y direction.

[0060] Optionally, in one embodiment, the first fastening mechanism is configured as a first fastening beam 7, with both ends of the first fastening beam 7 movably connected to the frame 12 along the X-direction. The second fastening mechanism 5 includes a first plate and a second plate fixedly connected perpendicularly thereto. One side of the first plate is movably connected to the inner side of the first fastening beam 7 along the Y-direction, and the other side is adapted to abut the test object in the X-direction. The second plate extends into the clamping space and is adapted to abut the test object in the Y-direction. At least two first fastening beams 7 are spaced apart along the Z-direction perpendicular to the vibration table 2 at opposite ends of the frame 12 along the X-direction. In this embodiment, the first plate serves to slideably connect to the first fastening beam 7 and also to separate the test object from the first fastening beam 7 in the X-direction. This prevents the sliding connection structure of the first fastening beam 7 from affecting the surface flatness of the test object. The flat surface of the first plate further facilitates abutment against the test object and vibration transmission, thereby ensuring test quality.

[0061] However, the present design is not limited to this. In other embodiments, the second fastening mechanism 5 can also be set as other types of mechanisms. For example, but not limited to, the second fastening mechanism 5 does not include a first plate body that abuts the test object in the X direction, and the first fastening beam 7 directly abuts the test object in the X direction, which can save consumables required for manufacturing the first plate body.

[0062] Optionally, in one embodiment, the two first fastening beams 7 located in the same moving plane are connected to a first tightening screw 4, which is used to tighten the two first fastening beams 7 in the X-direction. In this embodiment, the first tightening screw 4 extends in the X-direction (the direction of movement of the two first fastening beams 7). As can be understood, tightening and locking the two first fastening beams 7 using a screw provides the advantageous effect of convenient operation and precise control of the degree of tightening.

[0063] Furthermore, in one embodiment, at least two first tensioning screws are provided, divided into two groups. The two groups of first tensioning screws 4 are located at opposite ends of the clamping space along the Y direction. This allows the force for tightening the first tightening beam 7 to be applied at mutually spaced locations on the first tightening beam 7, ensuring uniform force on the first tightening beam 7 and, in turn, maintaining uniform force on the test object, thereby facilitating stable clamping of the test object. Furthermore, the two groups of first tensioning screws 4 are spaced apart from each other to prevent spatial overlap with the test object.

[0064] Preferably, there is only one first tightening screw 4 in each group to facilitate operation.

[0065] Without loss of generality, in one embodiment, the frame 12 includes at least four support columns extending along the Z direction and two sets of transverse fixing beams extending along the X direction. Four of the at least four support columns are arranged in a rectangular shape, with the length of the rectangle aligning with the X direction and the width aligning with the Y direction. Two support columns located on the same straight line along the X direction are connected by a set of transverse fixing beams. The end of the first fastening beam 7 is connected to the transverse fixing beam on the side of the transverse fixing beam near the clamping space. The two transverse fixing beams connected to the same first fastening beam 7 are located in the same plane parallel to the vibration table 2. The transverse fixing beams are connected to the support columns and the first fastening beam 7 at each connection point via bracket angles 6. This method can be used as an optional method for configuring the frame 12.

[0066] Optionally, only four support columns are provided, and the four support columns are arranged in a rectangular shape. In other embodiments, more support columns may be added between adjacent ones of the four support columns along the X-direction and the Y-direction to ensure the structural strength of the frame 12. The specific number and density of support columns may depend on the size of the test object and / or the test vibration intensity.

[0067] It is worth noting that in the above embodiment, the transverse fixing beam is detachably connected to the support column and the first fastening beam 7 at each connection point via bracket angles 6. This allows the first fastening beam to be secured after adjustment and facilitates the assembly of the desired number and density of support columns and transverse fixing beams as needed. Optionally, to ensure connection strength, bracket angles 6 are provided at each of the right-angled surfaces formed at the connection points between the transverse fixing beam, the support column, and the first fastening beam 7. Using bracket angles 6 for connection offers advantages such as a simple structure, low procurement costs, and a shortened processing cycle.

[0068] Optionally, in one embodiment, the support column, the transverse fixing beam, and the first fastening beam 7 are all made of square aluminum profiles, and a strip-shaped opening extending along the length direction is opened in the middle position of the outer side surface. Bolts are used to penetrate the bracket angle 6 and the strip-shaped opening to connect the transverse fixing beam to the support column and the first fastening beam 7 respectively; each first plate is connected to a sliding ring that can be slidably mounted on the first fastening beam, and the sliding ring is connected to the strip-shaped opening on the side of the first fastening beam 7 away from the clamping space by bolts. In this embodiment, the bracket angle 6 and the connected components can be tightened or loosened by tightening and loosening the bolts. For example, when the bracket angle 6 connected to the transverse fixing beam and the first fastening beam 7 is loosened, the first fastening beam 7 can be adjusted to clamp the test object. After the adjustment position is in place, the two first fastening beams 7 are tightened by the first tightening screw 4, and the bolts are tightened to fix the bracket angle 6.

[0069] Optionally, in one embodiment, a second locking beam 8 is provided on the end of the frame 12 away from the vibration table 2, adapted for Z-direction position adjustment. The second locking beam 8 is used to abut the side of the test object facing away from the vibration table 2 to clamp the test object. This allows for vibration testing of the test object in the Z direction, and combined with the securing effect of the first locking mechanism in the X direction and the clamping effect of the second locking mechanism 5 in the Y direction, the test object can be securely clamped in three dimensions.

[0070] It is worth noting that when conducting a vibration test on the test object in the Z direction, the clamping of the first fastening mechanism and the second fastening mechanism 5 can ensure that the test object does not move in the X and Y directions, thereby ensuring the quality of the vibration test and the feasibility of the test.

[0071] It is worth noting that, based on the present invention, vibration tests in the X and Y directions can be performed. This embodiment further adjusts the position of the second fastening beam in the Z direction to achieve Z-direction clamping and fastening, thereby enabling vibration tests in the X, Y, and Z directions. Specifically, when the two first fastening mechanisms are moved into position and locked by the first tightening screw and bolt, and the two second fastening mechanisms 5 are moved into position and locked by the bolt, a vibration test in the X direction can be performed. Furthermore, when it is necessary to perform a vibration test in the Y direction on the test object, the test object can be rotated 90 degrees along the plane parallel to the vibration table surface 2 on the basis of the X-direction vibration test, and after the test object is fixed again, the vibration test in the Y direction can be started on the test object. Furthermore, when it is necessary to perform a vibration test in the Z direction on the test object, the second fastening beam 8 is adjusted into position and locked, and then a vibration test in the Z direction can be performed on it.

[0072] Optionally, in one embodiment, the second fastening beam 8 comprises two first movable beams extending in the X-direction. The ends of the first movable beams are movably connected to the two support columns in the Z-direction. The two first movable beams are connected on their sides near the clamping space by a plurality of second movable beams. In this embodiment, the first movable beams are used to achieve a movable connection with the support columns, while the second movable beams are used to abut the test object to apply pressure. It will be appreciated that the plurality of second movable beams spaced apart in this embodiment can reduce the overall weight of the product while ensuring a sufficient coverage area for abutting the test object.

[0073] Optionally, in one embodiment, the first movable crossbeam and the second fastening beam 8 are made of square aluminum profiles, and the middle position of the outer peripheral side is provided with a strip-shaped opening extending along the length direction thereof, and bolts are used to penetrate the bracket angle 6 and the strip-shaped opening to connect the first movable crossbeam to the support column and the second movable crossbeam respectively. In this embodiment, by tightening and loosening the bolts, the tightness of the bracket angle 6 and the connected components can be achieved, and the position of the components can be adjusted. For example, when the bracket angle 6 connected to the support column and the first movable crossbeam is loosened, the first movable crossbeam can be adjusted in position along the Z direction to clamp the test object. After the adjustment position is in place, the bolts are tightened to fix the bracket angle 6. Similarly, the position and installation density of the second movable crossbeam can also be adjusted to better abut and fix the test object.

[0074] Optionally, the extension direction of the second movable beam is consistent with the Y direction, that is, the second movable beam is perpendicular to the first movable beam, so as to facilitate installation.

[0075] Further optionally, the second movable crossbeam is detachably connected to the first crossbeam by, for example, bolts.

[0076] Further optionally, two second movable cross beams are provided at intervals, and both ends of the second movable cross beams are connected to the middle portion of the first movable cross beam.

[0077] However, the present design is not limited thereto. In other embodiments, the second movable crossbeam may be replaced with a plate-like structure or a mesh-like structure to ensure the area of ​​the contacting test object.

[0078] Optionally, in one embodiment, the first movable crossbeam and the transverse fixed beam located in the same movable plane are connected with a second tensioning screw 3, and the second tensioning screw 3 is used to apply a force toward the test object to the first movable crossbeam in the Z direction and lock the two first movable crossbeams moved into position. In this way, it is possible to lock the first movable crossbeam and the second movable crossbeam in a position to clamp the test object after they are moved into position, and when this product is provided with the above-mentioned first tensioning screw 4, it is possible to apply tensioning force in the Z direction and the X direction at the same time, thereby ensuring the clamping effect and the vibration transmission effect. It can be understood that tightening and locking the first movable crossbeam in the form of a screw has the beneficial effect of convenient operation and can accurately control the degree of tension.

[0079] However, the present design is not limited thereto, and in other embodiments, locking may be performed in other ways, such as directly fixing the first movable beam to the support column by bolts.

[0080] Optionally, in one embodiment, at least two second tensioning screws 3 are provided, divided into two groups. The two groups of second tensioning screws 3 are located at opposite ends of the clamping space along the X-direction. This allows the force exerted to tension the first movable crossbeam to be applied at mutually spaced locations on the first movable crossbeam, ensuring uniform force on the first movable crossbeam and, in turn, maintaining uniform force on the test object, thereby facilitating stable clamping of the test object. Furthermore, the two groups of second tensioning screws 3 are spaced apart from each other to avoid spatial overlap with the test object.

[0081] Preferably, there is only one first tightening screw 4 in each group to facilitate operation.

[0082] Without loss of generality, in one embodiment, the lower end of the frame 12 is connected to the fixing position by connecting multiple sheet metal parts 1; the fixing position is configured as a threaded fixing hole 11, and the sheet metal parts 1 and the test object are detachably connected to the threaded fixing hole 11 through bolts, and the sizes of all threaded fixing holes 11 and the bolts used are consistent.

[0083] In this embodiment, the bolts and nuts used are all of uniform specifications and models, providing users with convenient assembly and disassembly. Optionally, the product's support column, first fastening beam 7, second fastening beam 8, etc. are all made of aluminum profiles that meet national standards, resulting in a simple structure, low procurement cost, and short processing cycle.

[0084] It is worth noting that the entire product uses bolts of uniform specifications, which can ensure that the depth of multiple connecting bolts screwed into the vibration table 2 is consistent, so that the torque for tightening the bolts is roughly the same.

[0085] Optionally, the lower end of the frame 12 is two opposite transverse fixing beams and two opposite first fastening beams 7. The lower sides of these transverse fixing beams and the first fastening beams 7 are connected to the threaded fixing holes 11 through the sheet metal 1, and the upper side of the transverse fixing beams is detachably connected to the lower end of the support column through the bracket angle 6.

[0086] Optionally, the threaded fixing holes 11 on the vibration table 2 can be directly connected to certain test objects.

[0087] Optionally, in one embodiment, two base adapters 9 are detachably spaced apart from each other, with multiple threaded fixing holes 11 suitable for mounting the test object. A plurality of guide rails 10 are detachably connected between the two base adapters 9 on one side near the clamping space. The guide rails 10 extend orthogonally to the direction of extension of the base adapter 9. The guide rails 10 are suitable for mounting the test object and for movement along the extension direction of the base adapter 9. In this manner, the base adapter 9 and guide rails 10 enable adjustment of the test object's position and height in the Z direction, thereby enabling better vibration testing.

[0088] Optionally, in one embodiment, a plurality of screw holes are provided at intervals along the length direction of the middle position of the base adapter 9, and corresponding screw holes are provided at the ends of the guide rail member 10, and the two are locked together by sequentially passing screws through the screw holes of the two.

[0089] Optionally, in one embodiment, a plurality of mounting holes are provided at intervals on the side edge of the base adapter 9 , and bolts are sequentially passed through these mounting holes and the threaded fixing holes 11 on the vibration table 2 to lock the base adapter 9 to the vibration table 2 .

[0090] Optionally, in one embodiment, the extending direction of the base adapter 9 is consistent with the Y direction, and the extending direction of the guide rail member 10 is consistent with the X direction.

[0091] Optionally, in some embodiments, the vibration test fixture provided by the present invention adopts a symmetrical structural design in both the X direction and the Y direction, so that the center of gravity of the test object falls on the center line of the vibration table 2.

[0092] Without loss of generality, in one embodiment, a direction indicator 13 is provided on the outer edge of the vibration table 2 near the frame 12 to allow the user to identify the vibration direction of the vibration table 2. This allows the user to accurately position the test object during the vibration test, facilitating accurate testing.

[0093] The following describes the operation process of the vibration test fixture according to some embodiments of the present invention.

[0094] When conducting an X-direction vibration test, first determine whether the test object can be directly and rigidly mounted on the vibration table 2. If not, a mounting adapter consisting of a base adapter 9 and a guide rail 10 is used to rigidly connect the test object to the table. The mounted test object is then tightened in the direction of table motion (X direction) by adjusting the positions of the first tightening beam 7 and the second tightening mechanism 5. Next, adjust the first tensioning screw 4 and tighten the bolts of the bracket angle 6 to ensure the test object is fully secured.

[0095] When conducting a Y-direction vibration test, simply disconnect the rigid connection between the test object and the vibration table surface based on the X-direction test, rotate the test object 90 degrees in the two directions of the vibration table surface, and then tighten it. The remaining process is the same as the X-direction test.

[0096] During the Z-direction vibration test, the test object is secured to the vibration table 2 in the same manner as for the X- and Y-direction vibration tests. For tightening in the Z-direction (test direction), the second tightening beam 8 is adjusted to secure the object. The second tensioning screw 3 is then adjusted, and the bolts at the bracket angle 6 are tightened to fully secure the test object. To prevent displacement of the test object perpendicular to the test direction (X and Y directions) during the Z-direction test, the first and second tightening mechanisms 5 are used to secure the test object.

[0097] It should be noted that “and / or” in the full text includes three solutions. Taking “A and / or B” as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art 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. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A vibration test fixture, characterized in that: include: The vibration table is provided with a plurality of fixing positions arranged in an array, some of the fixing positions being suitable for mounting a test object; A frame, one end of which is detachably connected to a portion of the fixed position, internally forming a clamping space for accommodating the test object and provided with two first fastening mechanisms, the two first fastening mechanisms being respectively provided at two ends of the clamping space along an X direction parallel to the vibration table, each of the first fastening mechanisms being provided with two second fastening mechanisms adapted to clamp the test object, the two first fastening mechanisms being adapted to adjust their positions toward and away from each other in the X direction and being capable of being locked; The two second fastening mechanisms on each first fastening mechanism are adapted to be positioned closer to or farther from each other in a Y direction parallel to the vibration table and capable of being locked, wherein the X direction is orthogonal to the Y direction; The first fastening mechanism is configured as a first fastening beam, with both ends of the first fastening beam being movably connected to the frame along the X direction. The second fastening mechanism includes a first plate and a second plate fixedly connected perpendicularly thereto. One side of the first plate is movably connected to the inner side of the first fastening beam along the Y direction, and the other side is adapted to abut against the test object in the X direction. The second plate extends into the clamping space and is adapted to abut against the test object in the Y direction. At least two of the first fastening beams are spaced apart at opposite ends of the frame along the X direction and along the Z direction perpendicular to the vibration table. The two first fastening beams located in the same moving plane are connected with a first tightening screw, and the first tightening screw is used to tighten the two first fastening beams in the X direction; and / or There are at least two first tightening screws and they are divided into two groups. The two groups of first tightening screws are respectively located at two ends of the clamping space along the Y direction.

2. The vibration test fixture according to claim 1, characterized in that: The frame includes at least four support columns extending along the Z direction and two groups of transverse fixed beams extending along the X direction. Four of the at least four support columns are distributed in a rectangular shape, with the length direction of the rectangle being consistent with the X direction and the width direction being consistent with the Y direction. Two support columns located on the same straight line along the X direction are connected by a group of transverse fixed beams. The end of the first fastening beam is connected to the side of the transverse fixed beam close to the clamping space, and the two transverse fixed beams connected to the same first fastening beam are located on the same plane parallel to the vibration table surface. The transverse fixed beam is connected to the support column and the first fastening beam at each connection position through a bracket angle.

3. The vibration test fixture according to claim 2, characterized in that: The support column, the transverse fixing beam and the first fastening beam are all made of square aluminum profiles, and a strip opening extending along the length direction is opened in the middle position of the outer side surface. The transverse fixing beam is connected to the support column and the first fastening beam respectively by passing bolts through the bracket corners and the strip opening; each first plate is connected to a sliding ring that can be slidably mounted on the first fastening beam, and the sliding ring is connected to the strip opening on the side of the first fastening beam away from the clamping space by bolts.

4. The vibration test fixture according to claim 2, characterized in that: A second fastening beam suitable for adjusting the position in the Z direction and capable of being locked is provided at one end of the frame away from the vibration table. The second fastening beam is used to abut against a side of the test object away from the vibration table to clamp the test object.

5. The vibration test fixture according to claim 4, characterized in that: The second fastening beam includes two first movable beams extending along the X direction, both ends of the first movable beams are movably connected to the two support columns along the Z direction, and the two first movable beams are connected by a plurality of second movable beams on one side close to the clamping space; and / or The second fastening beam is made of a square aluminum profile, and a strip-shaped opening extending along its length is opened in the middle of the outer side surface, and the first movable beam is connected to the support column and the second movable beam respectively by using bolts passing through the bracket corners and the strip-shaped opening; and / or The first movable crossbeam and the transverse fixed beam located in the same movable plane are connected by a second tightening screw, the second tightening screw being used to apply a force in the Z direction to the first movable crossbeam toward the test object and to lock the two first movable crossbeams in place; and / or There are at least two second tightening screws and they are divided into two groups. The two groups of second tightening screws are respectively located at two ends of the clamping space along the X direction.

6. The vibration test fixture according to any one of claims 2 to 5, characterized in that: The lower end of the frame is connected to the fixing position by connecting multiple sheet metal parts; The fixing position is configured as a threaded fixing hole, the sheet metal part and the test object are detachably connected to the threaded fixing hole by bolts, and the sizes of all the threaded fixing holes and the bolts used are consistent.

7. The vibration test fixture according to claim 6, characterized in that: Two base adapters are detachably provided at intervals with a plurality of threaded fixing holes suitable for mounting the test object, and a plurality of guide rails are detachably connected between the two base adapters on one side close to the clamping space, wherein the extension direction of the guide rails is orthogonal to the extension direction of the base adapter, and the guide rails are suitable for mounting the test object and for moving along the extension direction of the base adapter; and / or The guide rail member is detachably connected to the base adapter member via bolts; and / or The extending direction of the base adapter is consistent with the Y direction, and the extending direction of the guide rail is consistent with the X direction.

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