JP2021135249A - Vibration test device - Google Patents

Abstract

To stably vibrate a specimen and to make a size of a vibration test device compact.SOLUTION: A vibration test device includes: a vibration table 11; a first vibration machine 31 for vibrating the vibration table 11 along a first direction that is one direction of horizontal directions; a second vibration machine 32 for vibrating the vibration table 11 along a second direction that is a vertical direction; a first connection section 61 connecting the first vibration machine 31 and the vibration table 11; and a second connection section 62 connecting the second vibration machine 32 and the vibration table 11. The vibration table 11 is provided with a first surface section 13 to which the first connection section 61 is connected. The first surface section 13 and the second connection section 62 are arranged so as to overlap each other at least partially when viewed from the first direction.SELECTED DRAWING: Figure 4

Description

The present invention relates to a vibration test device.

Conventionally, a vibration test device for performing a vibration test on a specimen is known. The specimen is, for example, a part for an automobile. In the vibration test, the shaking table on which the specimen is held is vibrated at a predetermined frequency and acceleration, and performance tests of automobile parts and the like and safety-related tests are conducted.

In the vibration test, it is required to perform a vibration test on the specimen in three axial directions of the horizontal direction (front-back direction, left-right direction) and the vertical direction (vertical direction). For this reason, a three-axis vibration test device has been proposed that can perform a vibration test in the three-axis directions without changing the holding posture of the specimen with respect to the shaking table and can simultaneously vibrate in the three-axis directions (for example). , Patent Document 1).

FIG. 5 is a view of the conventional 3-axis vibration test apparatus 200 disclosed in Patent Document 1 as viewed from the + Y-axis direction side to the −Y-axis direction side. As shown in FIG. 5, the 3-axis vibration test device 200 includes a shaking table 111, an X-axis vibrating machine 131, a Y-axis vibrating machine 132, and a Z-axis vibrating machine 133. The X-axis exciter 131, the Y-axis exciter 132, and the Z-axis exciter 133 are exciters that vibrate the shaking table 111 along the X-axis direction, the Y-axis direction, and the Z-axis direction, respectively. ..

The shaking table 111 and the X-axis exciter 131 are connected via the X-axis connecting portion 161. The X-axis connecting portion 161 is a connecting portion that transmits displacement substantially only in the X-axis direction and does not transmit displacement in the Y-axis direction and the Z-axis direction. Similarly, the shaking table 111 and the Y-axis exciter 132 are connected via the Y-axis connecting portion 162, and the shaking table 111 and the Z-axis exciter 133 are connected via the Z-axis connecting portion 163. .. The Y-axis connecting portion 162 is a connecting portion that transmits displacement substantially only in the Y-axis direction and does not transmit displacement in the X-axis direction and the Z-axis direction. The Z-axis connecting portion 163 is a connecting portion that transmits displacement substantially only in the Z-axis direction and does not transmit displacement in the X-axis direction and the Y-axis direction.

In the 3-axis vibration test device 200 of Patent Document 1, the shape of the shaking table 111 is a substantially rectangular parallelepiped. The specimen W is held on the surface (upper surface in FIG. 5) of the shaking table 111 on the + Z axis direction side. The X-axis connecting portion 161 and the Y-axis connecting portion 162 are connected to the side surface of the shaking table 111 on the −X axis direction side and the side surface on the −Y axis direction side, respectively. The Z-axis connecting portion 163 is connected to the surface (bottom surface in FIG. 5) of the shaking table 111 on the −Z axis direction side.

JP-A-2018-205322

However, since the Z-axis connecting portion 163 is connected to the bottom surface of the shaking table 111, the distance between the specimen W and the Z-axis exciter 133 in the Z-axis direction is increased. Specifically, assuming that the position where the vibration of the Z-axis vibrator 133 is transmitted to the shaking table 111 via the Z-axis connecting portion 163 (bottom surface of the shaking table 111) is the vibration point P2, the vibration point P2 The distance D2 to the upper surface of the shaking table 111 becomes large. As a result, crosstalk is likely to occur in the shaking table 111, and there is a problem that it is difficult to stably vibrate the specimen W in the Z-axis direction.

Further, there is also a problem that the height of the 3-axis vibration test device 200 in the Z-axis direction becomes high because the distance D2 from the vibration point P2 to the upper surface of the shaking table 111 becomes large.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vibration test apparatus capable of stably vibrating a specimen and making the size in the vertical direction compact. ..

The present invention constitutes means for solving the above-mentioned problems as follows. That is, the vibration test apparatus of the present invention is
Shaking table and
A first vibrating machine that vibrates the shaking table along a first direction, which is one horizontal direction,
A second vibrator that vibrates the shaking table along the second direction, which is the vertical direction,
A first connecting portion that connects the first vibrating machine and the shaking table and substantially transmits a displacement in only the first direction.
A second connecting portion that connects the second vibrating machine and the shaking table and substantially transmits a displacement only in the second direction.
With
The shaking table
The first surface portion to which the first connecting portion is connected,
Have,
In the first direction, the first surface portion and the second connecting portion are arranged so that at least a part thereof overlaps with each other (first configuration).

According to the above configuration, in the first direction, the first surface portion and the second connecting portion are arranged so that at least a part thereof overlaps with each other. Therefore, in the second direction, which is the vertical direction, the distance from the vibration point at which the vibration is transmitted to the connecting portion by the vibrator to the specimen held by the shaking table can be shortened. As a result, the specimen can be vibrated in a stable manner, and the vertical size of the biaxial vibration test apparatus can be made compact.

Specific configurations of the vibration test apparatus of the present invention include the following configurations.

In the first configuration above
The first connecting portion includes a linear motion guide that can slide in the second direction.
The second connecting portion may include a linear motion guide slidable in the first direction (second configuration).

According to the above configuration, the first connecting portion and the second connecting portion each include a linear motion guide. Therefore, each of the first connecting portion and the second connecting portion is configured to transmit vibration in substantially only one direction, and it is possible to prevent crosstalk from occurring in the shaking table.

In the first configuration above
A third vibrating machine that vibrates the shaking table along a third direction that is unidirectional in the horizontal direction and orthogonal to the first direction.
A third connecting portion that connects the third vibrating machine and the shaking table and substantially transmits a displacement only in the third direction.
With more
The shaking table
A third surface portion to which the third connecting portion is connected,
Have more
In the third direction, the third surface portion and the second connecting portion may be arranged so that at least a part thereof overlaps with each other (third configuration).

According to the above configuration, in the first direction, the first surface portion and the second connecting portion are arranged so that at least a part thereof overlaps with each other, and in the third direction, the third surface portion and the second connecting portion are at least one. The parts are arranged so as to overlap each other. Therefore, in the second direction, which is the vertical direction, the distance from the vibration point at which the vibration is transmitted to the connecting portion by the vibrator to the specimen held by the shaking table can be shortened. As a result, the specimen can be vibrated in a stable manner, and the vertical size of the triaxial vibration test apparatus can be made compact.

In the third configuration above
The first connecting portion includes a linear motion guide slidable in the second direction and a linear motion guide slidable in the third direction.
The second connecting portion includes a linear motion guide slidable in the first direction and a linear motion guide slidable in the third direction.
The third connecting portion may include a linear motion guide slidable in the first direction and a linear motion guide slidable in the second direction (fourth configuration).

According to the above configuration, the first connecting portion, the second connecting portion, and the third connecting portion each include a linear motion guide. Therefore, each of the first connecting portion, the second connecting portion, and the third connecting portion is configured to transmit vibration in substantially only one direction, and it is possible to prevent crosstalk from occurring in the shaking table. ..

According to the vibration test apparatus of the present invention, the specimen can be vibrated stably and the size in the vertical direction can be made compact.

FIG. 1 is a perspective view of the vibration test device according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view of the second exciter cut along the second vibration axis. FIG. 3 is a view of the second exciter viewed from the + Z axis direction side to the −Z axis direction side. FIG. 4 is a cross-sectional view of the shaking table when the vibration test device is viewed from the + Y-axis direction side to the −Y-axis direction side. FIG. 5 is a view of the conventional 3-axis vibration test apparatus disclosed in Patent Document 1 as viewed from the + Y-axis direction side to the −Y-axis direction side.

[Embodiment 1]
Hereinafter, the vibration test apparatus 100 according to the first embodiment of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated. In addition, in order to make the explanation easy to understand, in the drawings referred to below, the configuration is shown in a simplified or schematic manner, or some constituent members are omitted. Further, the dimensional ratio between the constituent members shown in each figure does not necessarily indicate the actual dimensional ratio.

[overall structure]
First, the overall configuration of the vibration test device 100 will be described. FIG. 1 is a perspective view of the vibration test device 100 according to the first embodiment of the present invention. In FIG. 1, only a part of the first exciter 31, the second exciter 32, and the third exciter 33 is displayed.

In the present embodiment, the X-axis direction is the horizontal direction, the direction perpendicular to and horizontal to the X-axis is the Y-axis direction, and the Z-axis direction is the vertical direction. It is assumed that the X-axis direction corresponds to the first direction of the present invention, the Z-axis direction corresponds to the second direction of the present invention, and the Y-axis direction corresponds to the third direction of the present invention.

As shown in FIG. 1, the vibration test device 100 includes a shaking table 11, a first vibrating machine 31, a second vibrating machine 32, a third vibrating machine 33, a first connecting portion 61, and a second connecting portion 62. It includes a third connecting unit 63, a control unit (not shown), and the like. The vibration test device 100 simultaneously or individually vibrates the specimen W (see FIG. 4) held on the shaking table 11 in the X-axis direction, the Y-axis direction, and the Z-axis direction. It is a 3-axis vibration test device that can be performed in the above. The vibration test device 100 is installed on a base (not shown), but the description of the base will be omitted.

The shaking table 11 is connected to the first vibrating machine 31, the second vibrating machine 32, and the third vibrating machine 33, and is vibrated in the X-axis direction, the Z-axis direction, and the Y-axis direction, and is provided. It is a shaking table that holds the specimen W. The specimen W is fixed to the shaking table 11 by a jig (not shown).

The first exciter 31, the second exciter 32, and the third exciter 33 are electrodynamic exciters.

The first vibrating machine 31 is connected to the shaking table 11 via the first connecting portion 61. The first exciter 31 vibrates the shaking table 11 along the X-axis direction. The first vibrating machine 31 is arranged so that the first vibrating axis L1 is parallel to the X-axis direction.

The first connecting portion 61 is a connecting device that transmits a displacement only in the X-axis direction. The first connecting portion 61 transmits displacement only in the X-axis direction by combining a linear motion guide (linear guide) 611 arranged in the Y-axis direction and a linear motion guide 612 arranged in the Z-axis direction. It is configured to do. Therefore, the vibration in the X-axis direction by the first vibrating machine 31 is transmitted to the shaking table 11, and also cooperates with other vibrating machines (second vibrating machine 32 and third vibrating machine 33). It is possible to vibrate the shaking table 11 in the three axial directions. As the linear guide (linear guide), a linear guide using a ball or a hydrostatic bearing using a fluid pressure (for example, static pressure of oil) can be used.

The second vibrating machine 32 is connected to the shaking table 11 via the second connecting portion 62. The second exciter 32 vibrates the shaking table 11 along the Z-axis direction. The second vibrating machine 32 is arranged so that the second vibrating shaft L2 is parallel to the Z-axis direction.

The second connecting portion 62 is a connecting device that transmits a displacement only in the Z-axis direction. The second connecting portion 62 is formed by combining a linear motion guide 621 arranged in the X-axis direction (see FIG. 4) and a linear motion guide 622 arranged in the Y-axis direction (see FIG. 4) to form a Z-axis. It is configured to transmit displacement only in the direction. Therefore, the vibration in the Z-axis direction by the second vibrating machine 32 is transmitted to the shaking table 11, and also cooperates with other vibrating machines (first vibrating machine 31 and third vibrating machine 33). It is possible to vibrate the shaking table 11 in the three axial directions.

The third vibrating machine 33 is connected to the shaking table 11 via the third connecting portion 63. The third exciter 33 vibrates the shaking table 11 along the Y-axis direction. The third vibrating machine 33 is arranged so that the third vibrating axis L3 is parallel to the Y-axis direction.

The third connecting portion 63 is a connecting device that transmits a displacement only in the Y-axis direction. The third connecting portion 63 is configured to transmit the displacement only in the Y-axis direction by combining the linear motion guide 631 arranged in the X-axis direction and the linear motion guide 632 arranged in the Z-axis direction. Has been done. Therefore, the vibration in the Y-axis direction by the third vibrating machine 33 is transmitted to the shaking table 11, and also cooperates with other vibrating machines (first vibrating machine 31 and second vibrating machine 32). It is possible to vibrate the shaking table 11 in the three axial directions.

Here, the configurations of the first exciter 31, the second exciter 32, and the third exciter 33, which are electrokinetic exciters, will be described. In the present embodiment, since the first exciter 31, the second exciter 32, and the third exciter 33 have the same configuration, only the configuration of the second exciter 32 will be described.

FIG. 2 is a cross-sectional view of the second exciter 32 cut along the second vibration axis L2. The second vibrating shaft L2 is the central shaft of the drive coil 37 and the tubular body 39, which are vibrating portions. As shown in FIG. 2, the second exciter 32 includes an exciting coil 341, 342, a yoke 35, a drive coil 37, and the like. The exciting coils 341 and 342 form a static magnetic field. The yoke 35 forms a magnetic circuit and a magnetic gap due to the static magnetic field formed by the exciting coils 341 and 342. The drive coil 37 is a coil for generating vibration, which is arranged in the magnetic gap.

The yoke 35 is configured by integrally combining a first yoke portion 351 and a second yoke portion 352, and a third yoke portion 353. The first yoke portion 351 and the second yoke portion 352, and the third yoke portion 353 are formed of a ferromagnetic material. A magnetic gap is formed between the outer peripheral surface of the first yoke portion 351 and the inner peripheral surface of the second yoke portion 352. As the material of the first yoke portion 351 and the second yoke portion 352 and the third yoke portion 353 constituting the yoke 35, a magnetic material having high magnetic permeability and high strength, for example, low carbon steel such as SS400 is preferably used. It can be used.

The exciting coils 341 and 342 are wound in a cylindrical shape and are mounted side by side on the inner peripheral surface of the second yoke portion 352 in a state of being separated in the second vibration axis L2 direction. The exciting coils 341 and 342 are positioned by the third yoke portion 353 and the outer flange 354 of the first yoke portion 351.

The drive coil 37 is wound around the outer peripheral surface of one end side (in the FIG. 2, the −Z axis direction side) of the tubular body 39 made of a non-magnetic material. The drive coil 37 has the exciting coils 341, 342 and the exciting coils 341, 342 and It is inserted in a non-contact state with respect to the yoke 35. As the material of the cylinder 39, a non-magnetic high-strength metal (for example, aluminum alloy), a synthetic resin (for example, carbon fiber), or the like can be preferably used.

The drive coil 37 and the tubular body 39 are slidably provided along the Z-axis direction. Specifically, a magnetic circuit (static magnetic field) is generated in the yoke 35 surrounding the exciting coils 341 and 342 by supplying a direct current to the exciting coils 341 and 342 via a power amplifier by a control unit (not shown). Generated. A magnetic gap as described above is formed in the yoke 35, and the static magnetic field generated in the magnetic gap is generated by supplying an alternating current of a predetermined frequency to the drive coil 37 arranged in the magnetic gap by the control unit. The drive coil 37 slides in a direction orthogonal to the direction of the magnetic flux due to the force acting between the alternating current supplied to the drive coil 37. In this case, the drive coil 37 and the cylinder 39 slide in the direction of projecting (advancing) outward from the yoke 35 (+ Z-axis direction in FIG. 2) and inward toward the yoke 35 (in FIG. 2). , -Z axis direction) and slide in the direction of retracting (backward) are repeated. That is, the drive coil 37 and the cylinder 39 vibrate along the Z-axis direction at a frequency corresponding to the signal of the alternating current supplied to the drive coil 37.

Inside the cylinder 39, a drive coil 37, a guide rod 40 for guiding the slide of the cylinder 39 in the Z-axis direction, a guide roller 41, and a support portion 42 are provided. The guide roller 41 is supported on the inner wall surface of the first yoke portion 351 and guides the guide rod 40 in the Z-axis direction. The guide rollers 41 are arranged around the guide rod 40 at three locations at intervals of 120 degrees, and in FIG. 2, one of the three guide rollers 41 is visible. The guide rollers 41 may be arranged at four locations around the guide rod 40 at intervals of 90 degrees. The support portion 42 is arranged between the end portion of the third yoke portion 353 and the tubular body 39. The other end side of the tubular body 39 (in the + Z axis direction side in FIG. 2) is connected to the shaking table 11 via the second connecting portion 62 (see FIG. 1).

In the vibration test device 100, the drive coil 37, the cylinder 39, the second connecting portion 62, the shaking table 11 and the like are integrally Z by driving the second vibration exciter 32 by the control unit (not shown). It vibrates along the axial direction, and the specimen W held on the shaking table 11 is vibrated in the Z-axis direction.

FIG. 3 is a view of the second exciter 32 viewed from the + Z axis direction side to the −Z axis direction side. As shown in FIG. 3, the support portion 42 is arranged between the end portion of the third yoke portion 353 and the tubular body 39. The support portions 42 are arranged at four locations around the tubular body 39 at intervals of 90 degrees. The support portions 42 may be arranged at three locations around the tubular body 39 at intervals of 120 degrees.

FIG. 4 is a cross-sectional view of the shaking table 11 in a state where the vibration test device 100 is viewed from the + Y-axis direction side to the −Y-axis direction side. As shown in FIG. 4, the shaking table 11 has a top surface portion 12, a first side surface portion 13, a second side surface portion 14, a third side surface portion 15, and a fourth side surface portion 16 (see FIG. 1). .. The top surface portion 12, the first side surface portion 13, the second side surface portion 14, the third side surface portion 15, and the fourth side surface portion 16 are each made of a metal plate and are arranged in a state orthogonal to each other. The first side surface portion 13, the second side surface portion 14, the third side surface portion 15, and the fourth side surface portion 16 are provided so as to extend in the −Z axis direction with respect to the top surface portion 12, respectively. Side surface portions 17 are arranged between the first side surface portion 13, the second side surface portion 14, the third side surface portion 15, and the fourth side surface portion 16 (see FIG. 1). The top surface portion 12, the first side surface portion 13, the second side surface portion 14, the third side surface portion 15, the fourth side surface portion 16 and the side surface portion 17 are joined to each other. As a result, the shaking table 11 is configured in a box shape with an open lower portion.

The top surface portion 12 constitutes the upper surface of the shaking table 11. The top surface portion 12 is arranged in a direction orthogonal to the Z-axis direction, and is orthogonal to the first side surface portion 13 and the second side surface portion 14. The specimen W is held by a jig (not shown) on the surface of the top surface portion 12 on the + Z axis direction side (upper surface in FIG. 4). The second connecting portion 62 is connected to the surface of the top surface portion 12 on the −Z axis direction side (lower surface in FIG. 4) via the mounting portion 18.

The first side surface portion 13 constitutes a side surface of the shaking table 11 on the −X axis direction side. A first connecting portion 61 is connected to the first side surface portion 13. The first side surface portion 13 corresponds to the first surface portion of the present invention.

The second side surface portion 14 constitutes a side surface of the shaking table 11 on the −Y axis direction side. A third connecting portion 63 is connected to the second side surface portion 14 (see FIG. 1). The second side surface portion 14 corresponds to the third surface portion of the present invention.

Here, the second connecting portion 62 is arranged so that a part of the second connecting portion 62 enters the inside of the box-shaped shaking table 11. That is, in the second connecting portion 62, the upper portion (the end portion on the + Z axis direction side) of the second connecting portion 62 is higher than the lower end (the end portion on the −Z axis direction side) of the first side surface portion 13. Have been placed. In other words, the second connecting portion 62 is arranged so that a part thereof overlaps with the first side surface portion 13 when viewed from the X-axis direction.

Further, in the second connecting portion 62, the upper portion (end portion on the + Z axis direction side) of the second connecting portion 62 is higher than the lower end (end portion on the −Z axis direction side) of the second side surface portion 14. Have been placed. In other words, the second connecting portion 62 is arranged so that a part thereof overlaps with the second side surface portion 14 when viewed from the Y-axis direction.

In the present embodiment, the first exciter 31 and the third exciter 33 are arranged at the same height in the Z-axis direction. Specifically, the first vibrating machine 31 and the third vibrating machine 33 are the first vibrating shaft L1 which is the central axis of the vibrating part of the first vibrating machine 31, and the vibrating part of the third vibrating machine 33. The third vibration axis L3, which is the central axis of the above, is arranged so as to be included on the same XY plane.

Assuming that the virtual XY plane including the first vibrating shaft L1 of the first vibrating machine 31 and the third vibrating shaft L3 of the third vibrating machine 33 is the first plane F1, the shaking table 11 and the second connecting portion 62 The surface to which is connected is arranged so as to be included in the first plane F1. That is, in the present embodiment, the end surface (lower surface) of the mounting portion 18 on the −Z axis direction side is arranged so as to be included in the first plane F1.

In this way, since the second connecting portion 62 is connected to the bottom surface of the mounting portion 18 inside the shaking table 11, the second connecting portion 62 is connected to the bottom of the shaking table 11 as compared with the case where the second connecting portion 62 is connected to the bottom of the shaking table 11 (FIG. 5), the distance between the specimen W and the second vibrating machine 32 in the Z-axis direction can be shortened. Specifically, assuming that the position (bottom surface of the mounting portion 18) where the vibration of the second vibrating machine 32 is transmitted to the shaking table 11 via the second connecting portion 62 is the vibrating point P1, the vibrating point P1 is used. The distance D1 to the upper surface of the shaking table 11 can be shortened.

In the present embodiment, the surfaces to which the shaking table 11 and the second connecting portion 62 are connected are the first vibrating shaft L1 of the first vibrating machine 31 and the third vibrating shaft L3 of the third vibrating machine 33. However, the position of the surface on which the shaking table 11 and the second connecting portion 62 are connected is not limited to this position. For example, the surface to which the shaking table 11 and the second connecting portion 62 are connected may be further above the first plane F1 (on the + Z axis direction side). In this case, the distance D1 from the vibration point P1 to the upper surface of the shaking table 11 can be further shortened.

According to the vibration test device 100 according to the present embodiment described above, in the X-axis direction, the first side surface portion 13 and the second connecting portion 62 are arranged so that at least a part thereof overlaps with each other, and in the Y-axis direction. , The second side surface portion 14 and the second connecting portion 62 are arranged so that at least a part thereof overlaps with each other. Therefore, in the Z-axis direction, the distance D1 from the vibration point P1 at which the vibration is transmitted to the second connecting portion 62 by the second vibrator 32 to the specimen W held by the shaking table 11 is shortened. Can be done. As a result, crosstalk of the shaking table 11 is less likely to occur, the specimen W can be oscillated stably, and the vertical size of the vibration test apparatus 100 can be made compact.

[Modification example]
The embodiments disclosed this time are exemplary in all respects and do not provide a basis for limited interpretation. The technical scope of the present invention is not construed solely by the embodiments described above, but is defined based on the description of the claims. In addition, the technical scope of the present invention includes all modifications within the meaning and scope equivalent to the claims.

In the present embodiment, the three-axis vibration test device 100 has been described, but the present invention may be applied to a two-axis vibration test device in the horizontal direction and the vertical direction, and further to a multi-axis vibration test device having four or more axes. It may be applied.

For example, the configuration of the shaking table 11 is an example, and a shaking table having another configuration may be used.

The configuration of the first connecting portion 61, the second connecting portion 62, and the third connecting portion 63 is an example, and may be a connecting portion having another configuration.

In the above embodiment, the first exciter 31, the second exciter 32, and the third exciter 33 are electrokinetic exciters, but the present invention is not limited to the electrokinetic type, and other types of excitations are used. A shaker may be used. For example, as the first exciter 31, the second exciter 32, and the third exciter 33, an exciter using a hydraulic cylinder or an exciter using a servomotor may be used. Further, different types of exciters may be used as the first exciter 31, the second exciter 32, and the third exciter 33.

100 Vibration test device 11 Vibration table 31 1st vibration machine 32 2nd vibration machine 33 3rd vibration machine 61 1st connection part 62 2nd connection part 63 3rd connection part 13 1st side surface part (1st surface part)
14 2nd side surface part (3rd surface part)

Claims (4)

Shaking table and
A first vibrating machine that vibrates the shaking table along a first direction, which is one horizontal direction,
A second vibrator that vibrates the shaking table along the second direction, which is the vertical direction,
A first connecting portion that connects the first vibrating machine and the shaking table and substantially transmits a displacement in only the first direction.
A second connecting portion that connects the second vibrating machine and the shaking table and substantially transmits a displacement only in the second direction.
With
The shaking table
The first surface portion to which the first connecting portion is connected,
Have,
In the first direction, the first surface portion and the second connecting portion are arranged so that at least a part thereof overlaps with each other.
Vibration test equipment. The first connecting portion includes a linear motion guide that can slide in the second direction.
The second connecting portion includes a linear motion guide that can slide in the first direction.
The vibration test apparatus according to claim 1. A third vibrating machine that vibrates the shaking table along a third direction that is unidirectional in the horizontal direction and orthogonal to the first direction.
A third connecting portion that connects the third vibrating machine and the shaking table and substantially transmits a displacement only in the third direction.
With more
The shaking table
A third surface portion to which the third connecting portion is connected,
Have more
In the third direction, the third surface portion and the second connecting portion are arranged so that at least a part thereof overlaps with each other.
The vibration test apparatus according to claim 1. The first connecting portion includes a linear motion guide slidable in the second direction and a linear motion guide slidable in the third direction.
The second connecting portion includes a linear motion guide slidable in the first direction and a linear motion guide slidable in the third direction.
The third connecting portion includes a linear motion guide slidable in the first direction and a linear motion guide slidable in the second direction.
The vibration test apparatus according to claim 3.

Images