General-purpose fixture for vibration test
By designing a universal vibration test fixture with sliding groove and threaded rod structure, the problem of inconvenient fixation of components in vibration testing is solved, and a stable clamping of components of different sizes is achieved, adapting to various shapes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAN ENVIRONMENTAL TESTING TECH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-05-29
Smart Images
Figure CN224295711U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of testing and experimental equipment technology, specifically relating to a general-purpose clamp for vibration testing. Background Technology
[0002] Post-production testing of components is a crucial quality control step in manufacturing. For example, vibration testing is used to test the adaptability of components to various functions under vibration, and to evaluate the impact of vibration on component operation. It is widely used in component testing in industries such as aviation, aerospace, machinery, and electronics.
[0003] The actual problem is that components need to be fixed on a vibration table or vibration instrument during vibration testing to prevent them from displacing or falling off the test area during vibration testing. Since the shapes of components are usually different, it is very inconvenient to replace the fixed rods or clamps of different sizes to fix the components under test. Utility Model Content
[0004] To address the problems encountered in the background art, this application proposes a universal vibration test fixture that can clamp and fix components of different dimensions, thereby improving the stability and flexibility of clamping the components.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A universal vibration testing fixture includes a fixed platform and a fixed rod. The fixed platform has a sliding groove on its surface, an opening at the top of the sliding groove, and a sliding cavity at the bottom. The fixed rod has a slider at its bottom end, and a threaded rod connected to the upper end of the slider. The slider is inserted into the sliding cavity of the sliding groove. The threaded rod extends from the opening at the top of the sliding groove. A perforated plate is fitted onto the threaded rod, and a fastening nut is fitted onto the threaded rod. The fastening nut is located on the upper part of the perforated plate. The upper end of the fixed platform has multiple threaded through holes.
[0007] In one embodiment of this application, the surface of the fixed platform is provided with multiple sliding grooves.
[0008] In one embodiment of this application, the cross-section of the fixed platform is circular, and multiple sliding grooves pass through the center of the circular fixed platform and are evenly arranged along the diametrical direction.
[0009] In one embodiment of this application, the fixing platform is made of aluminum alloy.
[0010] In one embodiment of this application, a mounting hole is provided at the center of the fixing platform.
[0011] In one embodiment of this application, a soft pad is provided on the bottom surface of the perforated plate.
[0012] In one embodiment of this application, the upper end face of the slider is provided with multiple grooves.
[0013] In one embodiment of this application, the fastening nut is a wing nut.
[0014] In summary, the technical solution proposed in this application includes the following beneficial technical effects: By opening a sliding groove on the platform of the fixed table, the threaded rod can move along the setting direction of the sliding groove, so that the threaded rod is close to both sides of the component under test, which is used to adapt to components under test of different sizes, which is beneficial to improving the flexibility of clamping the component under test. Rotating the threaded rod, the fastening nut moves downward, and the fastening nut pushes the perforated plate downward to clamp the component under test between the perforated plate and the fixed table. Furthermore, the upper surface of the fixed table is provided with multiple threaded through holes, which can be used to align with the mounting holes or through holes on the component under test and insert fixing bolts for docking, which is beneficial to improving the stability of the component under test when it is fixed. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a top view of a general-purpose vibration testing fixture provided in one embodiment of this application;
[0017] Figure 2 for Figure 1 Cross-sectional view at point AA;
[0018] Figure 3 for Figure 1 Cross-sectional view of BB section;
[0019] Figure 4 for Figure 1 Cross-sectional view at CC;
[0020] Figure 5 This is a schematic diagram of the assembly structure of the perforated plate and threaded rod of a universal fixture for vibration testing provided in one embodiment of this application;
[0021] Figure 6 This is a three-dimensional structural diagram of a universal vibration testing fixture provided in an embodiment of this application;
[0022] Figure 7This is a schematic diagram of the assembly structure of the slider and sliding groove of a universal fixture for vibration testing provided in an embodiment of this application;
[0023] Figure 8 This is a schematic diagram of the fixing rod structure in a universal vibration testing fixture provided in an embodiment of this application;
[0024] Figure 9 A three-dimensional structural schematic diagram of a universal vibration testing fixture provided in an embodiment of this application;
[0025] Figure 10 This is a bottom view of the general-purpose vibration testing fixture provided in one embodiment of this application.
[0026] In the figure: fixed platform 1, sliding groove 11, opening 111, sliding cavity 112;
[0027] Fixed rod 2, slider 21, groove 211, threaded rod 22, fastening nut 23, protrusion 231;
[0028] Perforated plate 3, soft pad 31;
[0029] Threaded through hole 4;
[0030] Mounting hole 5. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.
[0032] It should be noted that in the description of this application, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0033] In this application, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of these terms in this application based on the specific circumstances.
[0034] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.
[0035] This embodiment provides a general-purpose vibration testing fixture, see reference. Figures 1-10 As shown, the device includes a fixed platform 1 and a fixed rod 2. The fixed platform 1 has a sliding groove 11 on its surface, an opening 111 at the top, and a sliding cavity 112 at the bottom. The fixed rod 2 has a slider 21 at its bottom end, and a threaded rod 22 connected to the upper end of the slider 21. The slider 21 is inserted into the sliding cavity 112 of the sliding groove 11. The threaded rod 22 extends out from the opening 111 at the top of the sliding groove 11. A perforated plate 3 is sleeved on the threaded rod 22, and a fastening nut 23 is fitted on the threaded rod 22. The fastening nut 23 is located on the upper part of the perforated plate 3. The fixed platform 1 has multiple threaded through holes 4 on its upper end.
[0036] In the above embodiment, a sliding groove 11 is provided on the platform of the fixed platform 1, and an opening 111 is provided at the upper part of the sliding groove 11. A sliding cavity 112 is provided at the lower part of the sliding groove 11. A slider 21 at the bottom end of the fixed rod 2 is provided in the sliding cavity 112, and a threaded rod 22 is connected to the upper end face of the slider 21. That is, when the slider 21 moves in the sliding cavity 112 of the sliding groove 11, it will drive the threaded rod 22 to move in the opening 111 at the upper end of the sliding groove 11 along the direction set by the sliding groove 11. A perforated plate 3 is sleeved on the threaded rod 22. Long holes are provided at both ends of the perforated plate 3, and a threaded rod 22 is sleeved in each long hole. During the test, the component to be tested can be placed between two threaded rods 22, and the threaded rods 22 are moved along the direction set by the sliding groove 11 so that the threaded rods 22 are close to the two sides of the component to be tested. At this time, the long holes at both ends of the perforated plate 3 are respectively sleeved on the two threaded rods 22. The threaded rod 22 is used to position the component under test between the perforated plate 3 and the fixed platform 1. A fastening nut 23 is fitted on the threaded rod 22 and is located on the upper part of the perforated plate 3. Rotating the fastening nut 23 moves it downward, pushing the perforated plate 3 downward to clamp the component under test between the perforated plate 3 and the fixed platform 1. When the perforated plate 3 comes into contact with the component, it can no longer move downward. If the fastening nut 23 is rotated in the same direction, the perforated plate 3 will not be able to move downward after contacting the component under test. Therefore, the threaded rod 22 will move upward, which in turn will move the slider 21 upward. This causes the upper end of the slider 21 to come into contact with the upper end of the sliding cavity 112 of the sliding groove 11, which increases the friction between the slider 21 and the upper part of the sliding cavity 112, keeping the slider 21 stationary in the sliding cavity 112, thus achieving stable clamping of the component under test. Furthermore, the upper surface of the fixing platform 1 is provided with multiple threaded through holes 4, which can be used to align with the mounting holes 5 or through holes on the component under test and insert fixing bolts for docking, which helps to improve the stability of the component under test when it is fixed. In summary, by providing a sliding groove 11 on the platform of the fixing platform 1, the threaded rod 22 can move along the setting direction of the sliding groove 11, so that the threaded rod 22 is close to both sides of the component under test, which is used to adapt to components under test of different sizes, which helps to improve the flexibility of clamping the component under test. Rotating the fastening nut 23 on the threaded rod 22 makes it move downward, and the fastening nut 23 pushes the perforated plate 3 downward to clamp the component under test between the perforated plate 3 and the fixing platform 1. Furthermore, the upper surface of the fixing platform 1 is provided with multiple threaded through holes 4, which can be used to align with the mounting holes 5 or through holes on the component under test and insert fixing bolts for docking, which helps to improve the stability of the component under test when it is fixed.
[0037] In one embodiment of this application, the surface of the fixed platform 1 is provided with a plurality of sliding grooves 11.
[0038] In the above embodiments, multiple sliding grooves 11 can be used to set fixing rods 2 at different positions. By using fixing rods 2 at different positions in conjunction with perforated plates 3, the flexibility of clamping and fixing test components of different sizes placed on the table surface of the fixing stage 1 can be improved.
[0039] In one embodiment of this application, see [reference] Figure 1 As shown, the cross-section of the fixed platform 1 is circular, and multiple sliding grooves 11 pass through the center of the circular fixed platform 1 and are evenly arranged along the diameter direction.
[0040] In the above embodiment, multiple sliding grooves 11 pass through the center of the circular fixed platform 1 and are evenly arranged along the diameter direction. Fixing rods 2 at different positions can be arranged in the multiple sliding grooves 11 to cooperate with the perforated plate 3, which is beneficial to improve the flexibility of clamping and fixing the measured components of different sizes placed on the platform of the fixed platform 1.
[0041] In one embodiment of this application, the fixing platform 1 is made of aluminum alloy.
[0042] In the above embodiments, the density of aluminum alloy is less than that of steel, which is about 1 / 3 the density of steel. Compared with steel, aluminum alloy can significantly reduce the weight of the platform, making it easier to move, transport, and install and adjust.
[0043] In one embodiment of this application, see reference Figure 1 As shown, a mounting hole 5 is provided at the center of the fixed platform 1.
[0044] In the above embodiment, the fixed platform 1 is circular, and its center is also the center of gravity. The fixed platform 1 and the vibrator are installed and fixed through the mounting hole 5 at the center of the fixed platform 1, which makes the installation of the fixed platform 1 more stable.
[0045] In one embodiment of this application, see reference Figure 10 As shown, a soft pad 31 is provided on the bottom surface of the perforated plate 3.
[0046] In the above embodiments, the soft pad 31 provided on the bottom surface of the perforated plate 3 can be a rubber soft pad 31. On the one hand, it can reduce the hardness of the contact surface between the perforated plate 3 and the component under test, and prevent the perforated plate 3 from scratching the component under test when clamping it. On the other hand, the elastic deformation of the soft pad 31 when it is clamped and in contact with the component under test increases the fit with the outside of the component under test, which is beneficial to improving the stability of clamping and fixing the component under test.
[0047] In one embodiment of this application, see reference Figure 8 As shown, the upper surface of the slider 21 is provided with multiple grooves 211.
[0048] In the above embodiment, the multiple grooves 211 provided on the upper end surface of the slider 21 can be used to increase the roughness of the upper end surface of the slider 21, which is beneficial to increase the friction when the upper end surface of the slider 21 abuts against the upper wall of the sliding cavity 112, making the slider 21 more stable and thus increasing the stability of the measured component.
[0049] In one embodiment of this application, see reference Figure 6 As shown, the fastening nut 23 is a wing nut.
[0050] In the above embodiment, the tabs 231 on both sides of the wing nut are used to increase the gripping points when the fastening nut 23 is rotated. Compared with traditional nuts that require tools such as wrenches to rotate, the operator can rotate the fastening nut 23 by holding the tabs 231 on both sides of the fastening nut 23, which is beneficial to improve the ease of operation of the fastening nut 23 when rotating and fixing and loosening.
[0051] In actual use of this application: a sliding groove 11 is provided on the surface of the fixed platform 1, and an opening 111 is provided at the upper part of the sliding groove 11, and a sliding cavity 112 is provided at the lower part of the sliding groove 11, such as... Figure 4 The sliding groove 11 shown is arranged in an inverted "T" shape. The sliding cavity 112 is provided with a slider 21 at the bottom of the fixed rod 2, and the upper end face of the slider 21 is connected to a threaded rod 22. That is, when the slider 21 moves in the sliding cavity 112 of the sliding groove 11, it will drive the threaded rod 22 to move in the opening 111 at the upper end of the sliding groove 11 along the direction set by the sliding groove 11, so as to adjust the clamping position of the measured components of different sizes. A perforated plate 3 is fitted onto the threaded rod 22. Each end of the perforated plate 3 has an elongated hole, and a threaded rod 22 is fitted into each elongated hole. During testing, the component to be tested can be placed between two threaded rods 22. The threaded rods 22 are moved along the direction of the sliding groove 11 until they are close to the sides of the component to be tested. At this point, the elongated holes at both ends of the perforated plate 3 are fitted onto the two threaded rods 22, placing the component to be tested between the perforated plate 3 and the platform of the fixed table 1. A fastening nut 23 is fitted onto the threaded rod 22, and the fastening nut 23 is located on the upper part of the perforated plate 3. Rotating the fastening nut 23 moves it downwards. 23 pushes the perforated plate 3 downward to clamp the component under test between the perforated plate 3 and the fixed platform 1. When the perforated plate 3 comes into contact with the component, the perforated plate 3 can no longer move downward. At this time, continue to rotate the fastening nut 23 in the same direction. Since the perforated plate 3 can no longer move downward after contacting the component under test, it will drive the threaded rod 22 to move upward, and then drive the slider 21 to move upward, so that the upper end face of the slider 21 abuts against the upper end of the sliding cavity 112 of the sliding groove 11. This increases the friction between the slider 21 and the upper part of the sliding cavity 112, so that the slider 21 remains stationary in the sliding cavity 112, thereby achieving stable clamping of the component under test.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A universal fixture for vibration testing, characterized in that, The device includes a fixed platform (1) and a fixed rod (2). The fixed platform (1) has a sliding groove (11) on its surface. The upper part of the sliding groove (11) has an opening (111) and the lower part of the sliding groove (11) has a sliding cavity (112). The bottom end of the fixed rod (2) has a slider (21) and the upper end of the slider (21) is connected to a threaded rod (22). The slider (21) is inserted into the sliding cavity (112) of the sliding groove (11). The threaded rod (22) extends out from the opening (111) at the upper end of the sliding groove (11). A perforated plate (3) is sleeved on the threaded rod (22). A fastening nut (23) is fitted on the threaded rod (22). The fastening nut (23) is located on the upper part of the perforated plate (3). The upper end of the fixed platform (1) has multiple threaded through holes (4).
2. The universal vibration testing fixture according to claim 1, characterized in that, The fixed platform (1) has multiple sliding grooves (11) on its surface.
3. The universal vibration testing fixture according to claim 1, characterized in that, The fixed platform (1) has a circular cross-section, and multiple sliding grooves (11) pass through the center of the circular fixed platform (1) and are evenly arranged along the diameter direction.
4. The universal vibration testing fixture according to claim 3, characterized in that, An installation hole (5) is provided at the center of the fixed platform (1).
5. The universal vibration testing fixture according to claim 1, characterized in that, The fixed platform (1) is made of aluminum alloy.
6. The universal vibration testing fixture according to claim 1, characterized in that, The bottom surface of the perforated plate (3) is provided with a pad (31).
7. The universal vibration testing fixture according to claim 1, characterized in that, The upper surface of the slider (21) is provided with multiple grooves (211).
8. The universal vibration testing fixture according to any one of claims 1-7, characterized in that, The fastening nut (23) is a wing nut.