Triaxial hydraulic vibration test system

Abstract

A triaxial hydraulic vibration test system comprises an X-direction hydraulic vibration exciter, a Y-direction hydraulic vibration exciter and a Z-direction hydraulic vibration exciter. The X-direction hydraulic vibration exciter is fixed through an integrated base; a supporting plate is arranged at the output end of the Z-direction hydraulic vibration exciter, and the upper end of the supporting plate is connected with a working table top through a first decoupling device. The X-direction hydraulic vibration exciter and the Y-direction hydraulic vibration exciter are arranged on the integrated base; a second decoupling device is arranged at the output end of the X-direction hydraulic vibration exciter, and a third decoupling device is arranged at the output end of the Y-direction hydraulic vibration exciter. According to the utility model, the X-direction hydraulic vibration exciter and the Y-direction hydraulic vibration exciter can be disconnected from the working table as required, and the X-direction hydraulic vibration exciter and the Y-direction hydraulic vibration exciter are enabled to respectively turn over and avoid in the vertical direction, so that the test is prevented from being interfered when the X-direction hydraulic vibration exciter and the Y-direction hydraulic vibration exciter are not used; meanwhile, the stability in the test process is ensured through the integrated base, and the test result is prevented from being influenced by the vibration of the base.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration test equipment, in particular to a tri-axial hydraulic vibration test system. Background Art

[0002] Triaxial vibration testing is a test method used to simulate and evaluate the effects of vibration on a structure or device in three dimensions. This test provides vibration conditions that are closer to actual operating environments than uniaxial vibration testing, making it crucial for ensuring product reliability and performance.

[0003] However, a product's operating environment often varies depending on its specific use and installation method. Therefore, it requires not only three-axis vibration testing but also bidirectional and even unidirectional testing to simulate the product's performance in various operating environments. However, when traditional triaxial vibration testing equipment performs two-axis vibration or uniaxial vibration, the other non-vibrating axial excitation device restricts the product's natural swing in this direction, making it inconsistent with the product's actual operating environment and thus causing deviations in the vibration test results.

[0004] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a tri-axial hydraulic vibration test system to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solution of the present invention and facilitating the understanding of those skilled in the art. It cannot be assumed that the above contents are well known to those skilled in the art simply because they are explained in the background technology of the present invention. Utility Model Content

[0006] In order to overcome the above-mentioned deficiencies in the prior art, the present invention aims to disclose a tri-axial hydraulic vibration test system to solve the problem that the test results of the existing vibration test device are prone to deviation.

[0007] The utility model discloses a three-axial hydraulic vibration test system, including an X-direction hydraulic vibrator and a Y-direction hydraulic vibrator arranged in the horizontal direction, and a Z-direction hydraulic vibrator fixed in the vertical direction, so as to realize the movement of the work surface along the three axes through the vibrators in three directions. The Z-direction hydraulic vibrator is fixed by an integrated base. The output end of the Z-direction hydraulic vibrator is provided with a support plate, and the upper end of the support plate is connected to the work surface through a first decoupling device; the X-direction hydraulic vibrator and the Y-direction hydraulic vibrator are both arranged on the integrated base in a flippable manner in the vertical direction; the output end of the X-direction hydraulic vibrator is provided with a second decoupling device, and the output end of the Y-direction hydraulic vibrator is provided with a third decoupling device, and the second decoupling device and the third decoupling device are both detachably connected to the side of the work surface. When the X-direction hydraulic vibrator or the Y-direction hydraulic vibrator is not in use, the connection with the work surface can be disconnected and flipped out of the way to avoid interference with the test.

[0008] Preferred technical solution: Several guide devices are provided on the integrated base, and the guide devices are evenly arranged on the outer periphery of the Z-direction hydraulic vibrator. The top of the guide device is connected to the support plate. The guide device includes a guide shaft and a linear bearing. The guide shaft and the linear bearing are coaxially arranged and the gap between them is smaller than the fitting gap between the piston rod and the hydraulic cylinder in the Z-direction hydraulic vibrator.

[0009] Preferred technical solution: Both sides of the X-direction hydraulic vibrator 1 and the Y-direction hydraulic vibrator are connected to the integrated base through wall panels, and the wall panels are provided with a rotating mechanism that can adjust the angle of the X-direction hydraulic vibrator and the Y-direction hydraulic vibrator in the vertical direction.

[0010] Preferred technical solution: The integrated base is provided with an escape groove for providing escape space for the rotation of the X-direction hydraulic vibrator and the Y-direction hydraulic vibrator.

[0011] Preferred technical solution: The work surface is made of lightweight aluminum-magnesium alloy to reduce its mass and thus reduce the difficulty of vibration control.

[0012] Preferred technical solution: Several reinforcing ribs are provided on the integrated base to ensure the strength of the integrated base.

[0013] Optimal technical solution: The X-axis hydraulic vibrator, the Y-axis hydraulic vibrator and the Z-axis hydraulic vibrator are all controlled by servo valves to ensure their vibration control accuracy.

[0014] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0015] The utility model discloses a three-axial hydraulic vibration test system, which can release the connection between an X-direction hydraulic vibrator and a Y-direction hydraulic vibrator and a worktable as needed, and make the X-direction hydraulic vibrator and the Y-direction hydraulic vibrator flip over and avoid in the vertical direction respectively, so as to avoid interference with the test when the X-direction hydraulic vibrator and the Y-direction hydraulic vibrator are not in use; at the same time, the stability of the system during the test is ensured by an integrated base, so as to avoid the test results being affected by the vibration of the base itself; a guide device is provided around the Z-direction hydraulic vibrator, so as to reduce the interference of the lateral force on the Z-direction hydraulic vibrator by the guide device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a top view of a tri-axial hydraulic vibration test system of the utility model;

[0018] Figure 2 This is a partial front view of the Z-direction hydraulic vibrator in the present invention;

[0019] Figure 3 This is a transverse cross-sectional view of the Z-axis hydraulic vibrator and guide device.

[0020] In the above drawings, 1. X-axis hydraulic vibrator; 11. Second decoupling device; 2. Y-axis hydraulic vibrator; 21. Third decoupling device; 3. Z-axis hydraulic vibrator; 31. Support plate; 32. First decoupling device; 33. Piston rod; 34. Hydraulic cylinder; 4. Integrated base; 41. Air avoidance groove; 5. Work table; 6. Guide device; 61. Guide shaft; 62. Linear bearing; 7. Wall panel; 71. Flip angle adjustment mechanism; 8. Servo valve. DETAILED DESCRIPTION

[0021] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application are described here. In addition, the terms "including" and "having" and their synonyms are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0024] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0025] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Example 1:

[0028] like Figure 1 and Figure 2As shown in the figure, a triaxial hydraulic vibration test system disclosed in the present invention comprises an X-direction hydraulic vibrator 1 and a Y-direction hydraulic vibrator 2 arranged in the horizontal direction, and a Z-direction hydraulic vibrator 3 fixed in the vertical direction. The main components of the present invention are described in detail below:

[0029] like Figure 1 and Figure 2 As shown, the Z-direction hydraulic exciter 3 is fixed by an integrated base 4 to ensure its installation stability. A support plate 31 is provided at the output end of the Z-direction hydraulic exciter 3. The upper end of the support plate 31 is connected to the work surface 5 via a first decoupling device 32. The first decoupling device 32 reduces the influence of the horizontal power output on the Z-direction hydraulic exciter 3.

[0030] like Figure 1 and Figure 2 As shown, the X-direction hydraulic vibrator 1 and the Y-direction hydraulic vibrator 2 are both arranged on an integrated base 4 in a flippable manner in the vertical direction, and a number of reinforcing ribs are provided on the integrated base 4; the output end of the X-direction hydraulic vibrator 1 is provided with a second decoupling device 11, and the motion interference from the Y-direction and Z-direction is reduced by the second decoupling device 11; the output end of the Y-direction hydraulic vibrator 2 is provided with a third decoupling device 21, and the motion interference from the X-direction and Z-direction is reduced by the third decoupling device 21; the second decoupling device 11 and the third decoupling device 21 are both detachably connected to the side of the work table 5; the X-direction hydraulic vibrator 1 or the Y-direction hydraulic vibrator 2 can be separated and flipped away from the work table 5, avoiding the X-direction hydraulic vibrator 1 or the Y-direction hydraulic vibrator 2 from restricting the movement of the work table 5 when not in use, so that the three-axial hydraulic vibration test system of the utility model can more accurately simulate the actual operating environment of the product under unidirectional and multi-directional vibration, thereby improving the accuracy of the test.

[0031] Example 2:

[0032] like Figure 1 、 Figure 2 and Figure 3As shown, in order to further improve the accuracy of the vibration test system, four guide devices 6 are provided on the integrated base 4. The four guide devices 6 are evenly arranged on the outer periphery of the Z-direction hydraulic vibrator 3. The top of the guide device 6 is connected to the support plate 31. The guide device 6 includes a guide shaft 61 and a linear bearing 62. The guide shaft 61 and the linear bearing 62 are coaxially arranged and the gap between them is smaller than the fitting gap between the piston rod 33 and the hydraulic cylinder 34 in the Z-direction hydraulic vibrator 3. During use, the guide shaft 61 and the linear bearing 62 should contact each other before the piston rod 33 and the hydraulic cylinder 34. The rolling friction between the guide shaft 61 and the linear bearing 62 replaces the sliding friction between the piston rod 33 and the hydraulic cylinder 34 for guidance, reducing the wear between the piston rod 33 and the hydraulic cylinder 34, reducing the running resistance, and also improving the anti-overturning ability in the other two directions, limiting the torsion and deflection of the entire device, so that the entire vibration test system maintains good stability.

[0033] Example 3:

[0034] like Figure 1 and Figure 2 As shown, to further improve the accuracy of the vibration test system, both sides of the X-direction hydraulic vibrator 1 and the Y-direction hydraulic vibrator 2 are connected to the integrated base 4 via wall panels 7. The wall panels 7 are each provided with a tilt angle adjustment mechanism 71 that can adjust the angle of the X-direction hydraulic vibrator 1 and the Y-direction hydraulic vibrator 2 in the vertical direction. The integrated base 4 is provided with an air escape groove 41 that provides a clearance space for the X-direction hydraulic vibrator 1 and the Y-direction hydraulic vibrator 2 to rotate. The wall panels 7 are used to limit and fix the X-direction hydraulic vibrator 1 and the Y-direction hydraulic vibrator 2 to prevent their output direction from changing during the test, thereby improving the stability of the vibration output. At the same time, the flip angle adjustment mechanism 71 and the air escape groove 41 allow the X-direction hydraulic vibrator 1 and the Y-direction hydraulic vibrator 2 to better avoid the work surface 5 when not in use, thereby reducing interference and improving the accuracy of the test results.

[0035] Example 4:

[0036] like Figure 1 and Figure 2 As shown, in order to further improve the accuracy of the vibration test system, a lightweight aluminum-magnesium alloy is used to make the work surface 5 to reduce the motion inertia of the work surface 5; the X-direction hydraulic vibrator 1, the Y-direction hydraulic vibrator 2 and the Z-direction hydraulic vibrator 3 are all controlled by a servo valve 8 to improve their motion output accuracy, thereby improving the control accuracy of the vibration of the work surface 5.

[0037] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A triaxial hydraulic vibration test system, comprising an X-direction hydraulic vibrator (1) and a Y-direction hydraulic vibrator (2) arranged in the horizontal direction, and a Z-direction hydraulic vibrator (3) fixed in the vertical direction, characterized in that: The Z-direction hydraulic vibrator (3) is fixed via an integrated base (4); the output end of the Z-direction hydraulic vibrator (3) is provided with a support plate (31); the upper end of the support plate (31) is connected to a work surface (5) via a first decoupling device (32); the X-direction hydraulic vibrator (1) and the Y-direction hydraulic vibrator (2) are both arranged on the integrated base (4) in a flippable manner in the vertical direction; the output end of the X-direction hydraulic vibrator (1) is provided with a second decoupling device (11), and the output end of the Y-direction hydraulic vibrator (2) is provided with a third decoupling device (21); the second decoupling device (11) and the third decoupling device (21) are both detachably connected to the side of the work surface (5).

2. A triaxial hydraulic vibration test system according to claim 1, characterized in that: The integrated base (4) is provided with a plurality of guide devices (6), the guide devices (6) are evenly arranged on the outer periphery of the Z-direction hydraulic vibrator (3), the top of the guide device (6) is connected to the support plate (31), and the guide device (6) includes a guide shaft (61) and a linear bearing (62), the guide shaft (61) and the linear bearing (62) are coaxially arranged and the gap between them is smaller than the fitting gap between the piston rod (33) and the hydraulic cylinder (34) in the Z-direction hydraulic vibrator (3).

3. A triaxial hydraulic vibration test system according to claim 1, characterized in that: Both sides of the X-direction hydraulic vibrator (1) and the Y-direction hydraulic vibrator (2) are connected to the integrated base (4) via wall panels (7), and the wall panels (7) are provided with a flip angle adjustment mechanism (71) capable of adjusting the angles of the X-direction hydraulic vibrator (1) and the Y-direction hydraulic vibrator (2) in the vertical direction.

4. A triaxial hydraulic vibration test system according to claim 3, characterized in that: The integrated base (4) is provided with an escape groove (41) for providing an escape space for the rotation of the X-direction hydraulic vibrator (1) and the Y-direction hydraulic vibrator (2).

5. The triaxial hydraulic vibration test system according to claim 1, characterized in that: The work surface (5) is made of a lightweight aluminum-magnesium alloy.

6. The triaxial hydraulic vibration test system according to claim 1, characterized in that: The integrated base (4) is provided with a plurality of reinforcing ribs.

7. The triaxial hydraulic vibration test system according to claim 1, characterized in that: The X-direction hydraulic vibrator (1), the Y-direction hydraulic vibrator (2), and the Z-direction hydraulic vibrator (3) are all controlled by a servo valve (8).

Images