Bidirectional loading vibration table

Abstract

The invention relates to the technical field of vibration tables, in particular to a bidirectional loading vibration table which comprises a foundation bottom plate, a bearing panel is arranged above the foundation bottom plate, a foundation part supporting steel frame is arranged on the side, facing the bearing panel, of the foundation bottom plate, and the foundation part supporting steel frame is connected with a bearing part supporting steel frame through a translation assembly. The bearing part supporting steel frame is arranged on the side, facing the foundation slab, of the bearing panel. The bearing part supporting steel frame and the foundation part supporting steel frame are rotationally connected with angle adjusting supports correspondingly, and the two angle adjusting supports are arranged at the different ends of the bearing part supporting steel frame and the foundation part supporting steel frame correspondingly. Through the synergistic effect of the angle adjusting bracket and the translation assembly, the bearing panel can effectively simulate horizontal and vertical bidirectional vibration under a single hydraulic source; different horizontal and vertical amplitude proportions can be adjusted through the angle adjusting bracket; the device is simple in structure, and the manufacturing and maintenance cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of vibration table technology, and in particular to a bidirectional loading vibration table. Background Technology

[0002] Physical model tests centered on shaking tables began in the 1960s. By replaying measured or synthesized acceleration time histories, earthquake effects were reproduced on the table, providing a key experimental means for structural seismic resistance research and earthquake damage mechanism analysis. However, due to the limitations of early devices, which were mainly mechanical shaking tables, such as narrow frequency range and the ability to only unidirectional (horizontal) excitation, it was difficult to cover complex seismic motion characteristics and multidimensional coupling effects.

[0003] With the development of electro-hydraulic servo control and multi-axis collaborative control technology, shaking tables have gradually evolved from unidirectional to bidirectional and three-axis six-degree-of-freedom (3D-6DOF), which can simultaneously realize coupled motion of three translational and three rotational degrees of freedom, significantly improving the ability to reproduce real ground vibrations and the reliability of the test. At present, many large and super-large multi-degree-of-freedom shaking tables have been built for large-scale and even full-scale model tests.

[0004] To more realistically reproduce the interaction between complex sites and structures, multi-hydraulic shaking tables with multiple hydraulic actuators have become an important direction; however, such systems are expensive, complex to manufacture and maintain, and require high system integration, resulting in high construction and operation costs, which restricts their widespread application in a wider range of engineering and scientific research scenarios.

[0005] To address the shortcomings of existing multi-degree-of-freedom shaking tables, such as complex structure, high cost, and difficulty in achieving simultaneous horizontal and vertical vibration with a single hydraulic source, there is an urgent need for a bidirectional loading shaking table that can achieve simultaneous / independent loading of horizontal and vertical seismic motions with a simpler configuration and lower cost, while balancing experimental realism and engineering usability. Summary of the Invention

[0006] The purpose of this invention is to provide a bidirectional loading vibration table to solve the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides the following solution: a bidirectional loading vibration table, comprising a base plate, a bearing panel disposed above the base plate, a base support steel frame disposed on the side of the base plate facing the bearing panel, the base support steel frame being connected to the bearing support steel frame via a translation component, the bearing support steel frame being disposed on the side of the bearing panel facing the base plate; the bearing support steel frame and the base support steel frame are respectively rotatably connected to angle adjustment brackets, the two angle adjustment brackets being respectively disposed at different ends of the bearing support steel frame and the base support steel frame.

[0008] Preferably, the base support steel frame is provided with a plurality of fixing bolt holes around it, and the fixing bolt holes are formed on the base plate.

[0009] Preferably, the foundation support steel frame includes a third connecting rod, and a fourth connecting rod is fixedly connected to each end of the third connecting rod. A second support is rotatably connected to the end of the fourth connecting rod away from the third connecting rod, and the second support is fixedly connected to the foundation base plate.

[0010] Preferably, the two fourth connecting rods are arranged symmetrically.

[0011] Preferably, the angle adjustment bracket on the base support steel frame is positioned between the two fourth connecting rods and close to the third connecting rod.

[0012] Preferably, the supporting steel frame of the load-bearing part includes a first connecting rod, and a second connecting rod is fixedly connected to each end of the first connecting rod. A first support is rotatably connected to the end of each second connecting rod away from the first connecting rod, and the first support is fixedly connected to the load-bearing panel.

[0013] Preferably, the two second connecting rods are arranged symmetrically.

[0014] Preferably, the angle adjustment bracket on the supporting steel frame of the bearing part is disposed between the two second connecting rods and close to the first connecting rod, and the end of the first connecting rod away from the angle adjustment bracket has a plurality of actuator bolt holes.

[0015] Preferably, the translation assembly includes a linear bearing fixedly connected to the side of each of the second connecting rods facing the fourth connecting rod, the linear bearing being slidably connected to a convex slide rail, the convex slide rail being fixedly connected to the side of the fourth connecting rod facing the second connecting rod.

[0016] Preferably, the angle adjustment bracket includes a connecting plate, on which two third supports are fixedly connected. Each third support is rotatably connected to a fifth connecting rod. A pivot is provided at one end of each fifth connecting rod away from the third support. The pivot passes through the two fifth connecting rods and is fixedly connected to them. The pivot on the bearing panel is rotatably connected between the two second connecting rods. The pivot on the base plate is rotatably connected between the two fourth connecting rods.

[0017] The present invention discloses the following technical effects:

[0018] This invention, through the synergistic effect of the angle adjustment bracket and the translation component, not only enables the bearing panel to effectively simulate bidirectional horizontal and vertical vibration under a single hydraulic source, but also allows for the adjustment of different horizontal and vertical amplitude ratios through the angle adjustment bracket.

[0019] The present invention has a simple structure and effectively reduces manufacturing and maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention when the linear bearing and the convex slide rail are not connected;

[0022] Figure 2 This is a schematic diagram of the supporting steel frame structure for the load-bearing part of the present invention;

[0023] Figure 3 This is a schematic diagram of the upward-view structure of the bearing panel of the present invention;

[0024] Figure 4 This is a schematic diagram of the steel frame structure supporting the foundation of the present invention;

[0025] Figure 5 This is a bottom view of the basic base plate structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the angle adjustment bracket structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the present invention before vibration.

[0028] Figure 8 This is a schematic diagram of the structure of the present invention when it vibrates and generates displacement;

[0029] The components include: 1. Load-bearing panel; 2. Foundation base plate; 3. Load-bearing support steel frame; 4. Foundation support steel frame; 5. Linear bearing; 6. Convex slide rail; 7. Angle adjustment bracket; 8. Fixing bolt hole; 9. Limit screw hole; 10. Actuator bolt hole; 11. Actuator; 12. Reaction wall; 31. First connecting rod; 32. Second connecting rod; 33. First support; 41. Third connecting rod; 42. Fourth connecting rod; 43. Second support; 71. Rotating shaft; 72. Fifth connecting rod; 73. Third support; 74. Connecting plate. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figures 1 to 8 This invention provides a bidirectional loading vibration table, including a base plate 2, a bearing panel 1 disposed above the base plate 2, a base support steel frame 4 disposed on the side of the base plate 2 facing the bearing panel 1, and a bearing support steel frame 3 connected to the base support steel frame 4 via a translation component. The bearing support steel frame 3 is disposed on the side of the bearing panel 1 facing the base plate 2. Angle adjustment brackets 7 are rotatably connected to the bearing support steel frame 3 and the base support steel frame 4, and the two angle adjustment brackets 7 are disposed at different ends of the bearing support steel frame 3 and the base support steel frame 4, that is, the two angle adjustment brackets 7 are disposed diagonally between the bearing panel 1 and the base plate 2.

[0033] This invention, through the synergistic effect of the angle adjustment bracket 7 and the translation component, not only enables the bearing panel 1 to effectively simulate bidirectional horizontal and vertical vibration under a single hydraulic source, but also allows for the adjustment of different horizontal and vertical amplitude ratios through the angle adjustment bracket 7.

[0034] The present invention has a simple structure and effectively reduces manufacturing and maintenance costs.

[0035] To further optimize the design, multiple fixing bolt holes 8 are provided around the foundation support steel frame 4, and these fixing bolt holes 8 are located on the foundation base plate 2. A first bolt is installed in each fixing bolt hole 8, and the foundation base plate 2 is fixed to the ground using these first bolts.

[0036] Further optimization of the scheme: the foundation support steel frame 4 includes a third connecting rod 41, and the two ends of the third connecting rod 41 are respectively fixedly connected to a fourth connecting rod 42. The end of the fourth connecting rod 42 away from the third connecting rod 41 is rotatably connected to a second support 43, and the second support 43 is fixedly connected to the foundation base plate 2.

[0037] The design is further optimized by symmetrically arranging the two fourth connecting rods 42. The third connecting rod 41 enables the two fourth connecting rods 42 to rotate synchronously on the second support 43.

[0038] In a further optimized design, the angle adjustment bracket 7 on the foundation support steel frame 4 is positioned between the two fourth connecting rods 42 and close to the third connecting rod 41. Specifically, the angle adjustment bracket 7 on the foundation support steel frame 4 is positioned between the ends of the fourth connecting rods 42 furthest from the second support 43.

[0039] Further optimization of the scheme: the load-bearing support steel frame 3 includes a first connecting rod 31, and two ends of the first connecting rod 31 are respectively fixedly connected to a second connecting rod 32. The end of the second connecting rod 32 away from the first connecting rod 31 is rotatably connected to a first support 33, and the first support 33 is fixedly connected to the load-bearing panel 1.

[0040] The design is further optimized by symmetrically arranging the two second connecting rods 32. The first connecting rod 31 enables the two second connecting rods 32 to rotate synchronously on the first support 33.

[0041] In a further optimized design, the angle adjustment bracket 7, located on the supporting steel frame 3 of the load-bearing part, is positioned between the two second connecting rods 32 and close to the first connecting rod 31. The first connecting rod 31 has multiple actuator bolt holes 10 at one end away from the angle adjustment bracket 7.

[0042] The angle adjustment bracket 7, which is located on the supporting steel frame 3 of the load-bearing part, is positioned between the ends of the second connecting rod 32 that are away from the first support 33.

[0043] A second bolt is provided in the actuator bolt hole 10, which facilitates the connection between the first connecting rod 31 and the actuator 11. The actuator 11 is a hydraulic actuator.

[0044] A further optimized design includes a translation component comprising a linear bearing 5 fixedly connected to the side of each second connecting rod 32 facing the fourth connecting rod 42. The linear bearing 5 is slidably connected to a convex slide rail 6, which is fixedly connected to the side of the fourth connecting rod 42 facing the second connecting rod 32. By sliding the linear bearing 5 along the convex slide rail 6, the linear bearing 5 can effectively drive the support panel 1 to move.

[0045] Further optimizing the design, the angle adjustment bracket 7 includes a connecting plate 74, on which two third supports 73 are fixedly connected. Each third support 73 is rotatably connected to a fifth connecting rod 72. A rotating shaft 71 is provided at the end of each fifth connecting rod 72 away from the third support 73. The rotating shaft 71 passes through the two fifth connecting rods 72 and is fixedly connected to them. The rotating shaft 71 on the bearing panel 1 is rotatably connected between two second connecting rods 32. The rotating shaft 71 on the foundation plate 2 is rotatably connected between two fourth connecting rods 42.

[0046] Both the bearing panel 1 and the base plate 2 are provided with multiple limiting screw holes 9, which are all located away from the first support 33 and the second support 43; that is, the multiple limiting screw holes 9 on the bearing panel 1 are located close to the second support 43, and the multiple limiting screw holes 9 on the base plate 2 are located close to the first support 33.

[0047] The limit screw hole 9 has a third bolt connected to its internal thread, which is used to fix the connecting plate 74 in place.

[0048] Meanwhile, by installing the third bolt in the limiting screw holes 9 at different positions, it is easy to adjust the tilt angle of the bearing support steel frame 3 and the foundation support steel frame 4, thereby achieving different horizontal and vertical displacement ratios, so that the horizontal and vertical ratios can be adjusted according to experimental requirements.

[0049] Work process: Refer to Figure 7 and Figure 8 Before the experiment, the tilt angles of the convex slide rail 6 and the linear bearing 5 are adjusted by two angle adjustment brackets 7 to adjust the horizontal and vertical amplitude ratios. Then, one end of the actuator 11 is mounted on the reaction wall 12 through the fourth support, and the other end of the actuator 11 is mounted on the first connecting rod 31, so that the actuator 11 is parallel to the convex slide rail 6 and the linear bearing 5. Then, the actuator 11 is turned on to conduct the experiment. By adjusting the actuator 11 to apply unidirectional displacement, velocity and acceleration, the actuator 11 drives the linear bearing 5 to move along the convex slide rail 6 through the bearing support steel frame 3. At this time, the bearing panel 1 can realize bidirectional vibration simulation in both horizontal and vertical directions.

[0050] The present invention adjusts the different tilt angles of the convex slide rail 6 and the linear bearing 5 by adjusting the angle adjustment bracket 7, thereby adjusting different horizontal and vertical amplitude ratios.

[0051] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0052] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A bidirectional loading vibration table, characterized in that: Includes a foundation plate (2), a bearing panel (1) is provided above the foundation plate (2), a foundation support steel frame (4) is provided on the side of the foundation plate (2) facing the bearing panel (1), the foundation support steel frame (4) is connected to a bearing support steel frame (3) through a translation component, the bearing support steel frame (3) is provided on the side of the bearing panel (1) facing the foundation plate (2); The bearing support steel frame (3) and the foundation support steel frame (4) are rotatably connected with angle adjustment brackets (7), and the two angle adjustment brackets (7) are respectively located at different ends of the bearing support steel frame (3) and the foundation support steel frame (4).

2. The bidirectional loading vibration table according to claim 1, characterized in that: The base support steel frame (4) is provided with a plurality of fixing bolt holes (8) around it, and the fixing bolt holes (8) are opened on the base plate (2).

3. The bidirectional loading vibration table according to claim 1, characterized in that: The foundation support steel frame (4) includes a third connecting rod (41), and a fourth connecting rod (42) is fixedly connected to both ends of the third connecting rod (41). A second support (43) is rotatably connected to the end of the fourth connecting rod (42) away from the third connecting rod (41). The second support (43) is fixedly connected to the foundation base plate (2).

4. The bidirectional loading vibration table according to claim 3, characterized in that: The two fourth connecting rods (42) are arranged symmetrically.

5. The bidirectional loading vibration table according to claim 3, characterized in that: The angle adjustment bracket (7) located on the base support steel frame (4) is positioned between the two fourth connecting rods (42) and close to the third connecting rod (41).

6. The bidirectional loading vibration table according to claim 3, characterized in that: The supporting steel frame (3) of the bearing part includes a first connecting rod (31), and a second connecting rod (32) is fixedly connected to both ends of the first connecting rod (31). A first support (33) is rotatably connected to the end of the second connecting rod (32) away from the first connecting rod (31). The first support (33) is fixedly connected to the bearing panel (1).

7. The bidirectional loading vibration table according to claim 6, characterized in that: The two second connecting rods (32) are arranged symmetrically.

8. The bidirectional loading vibration table according to claim 6, characterized in that: The angle adjustment bracket (7) located on the support steel frame (3) of the bearing part is arranged between the two second connecting rods (32) and close to the first connecting rod (31). The first connecting rod (31) has a plurality of actuator bolt holes (10) at one end away from the angle adjustment bracket (7).

9. The bidirectional loading vibration table according to claim 6, characterized in that: The translation assembly includes a linear bearing (5) fixedly connected to the side of each second connecting rod (32) facing the fourth connecting rod (42), the linear bearing (5) being slidably connected to a convex slide rail (6), the convex slide rail (6) being fixedly connected to the side of the fourth connecting rod (42) facing the second connecting rod (32).

10. The bidirectional loading vibration table according to claim 6, characterized in that: The angle adjustment bracket (7) includes a connecting plate (74), on which two third supports (73) are fixedly connected. Each third support (73) is rotatably connected to a fifth connecting rod (72). A rotating shaft (71) is provided at one end of each fifth connecting rod (72) away from the third support (73). The rotating shaft (71) passes through the two fifth connecting rods (72) and is fixedly connected to the two fifth connecting rods (72). The pivot (71) located on the bearing panel (1) is rotatably connected between the two second connecting rods (32); The pivot (71) located on the base plate (2) is rotatably connected between the two fourth connecting rods (42).

Images