Vibrator fixing device and vibration system

Abstract

A fixing apparatus (1) according to the present disclosure comprises a base (11), a first axis member (12) provided on the base (11) and extending in a first direction, and a second axis member (13) that is attached to the first axis member (12), extends in a second direction orthogonal to the first direction, is movable relative to the first axis member (12) in both the first and second directions, and is equipped with a vibration generator (2).

Description

Technical Field

[0001] The present invention relates to a vibrator fixing device and a vibration excitation system.

Background Art

[0002] It is known that when constructing a structure, the natural frequency and the like of the structure are measured through modal experiments so that resonance does not occur in the structure (see Non-Patent Document 1). The simplest and most common modal experiment is performed using an impulse hammer and an accelerometer.

[0003] Since an impulse hammer excites a structure manually, when a large structure such as a bridge is excited by an impulse hammer, the excitation force is significantly attenuated, and the resonance frequency may not be measured with desired accuracy. In contrast, a common vibrator used in modal experiments can excite a large structure with a magnitude sufficient to measure the resonance frequency with desired accuracy.

[0004] For example, Non-Patent Document 2 describes a vibrator that is installed on the side of an automobile by being attached to a fixing device, and is configured to mount a vibrator that excites the side surface of the automobile. In addition, Non-Patent Document 3 describes a vibrator that is installed on the ground and excites the wing of a UAV (Unmanned Aerial Vehicle) from below to above.

Prior Art Documents

Non-Patent Documents

[0005]

Non-Patent Document 1

Non-Patent Document 2

[0006] However, the stationary device described in Non-Patent Document 2 can move the vibrator vertically and vibrate an object from the side, but it cannot vibrate an object from above or below. Similarly, the vibrator in Non-Patent Document 3 can vibrate an object from below, but it cannot vibrate an object from above or from the side.

[0007] In contrast, vibration characteristic tests of attached pipes installed on large structures such as bridges require measuring the response to excitation that simulates vibrations caused by vehicles passing over the large structure. Furthermore, attached pipes are installed on various sides (upper, lower, left, right, etc.) at various locations within the large structure. For example, attached pipes may be installed on the underside of a bridge, utilizing the bridge girder of a large structure such as a bridge. Therefore, in vibration characteristic tests, it is desirable that the exciter be installed so that the structure can be excited in both the vertical and horizontal directions at various locations. [Means for solving the problem]

[0008] To solve the above problems, the fixing device according to the present disclosure comprises a base, a first shaft member provided on the base and extending in a first direction, and a second shaft member attached to the first shaft member, extending in a second direction perpendicular to the first direction, and movable relative to the first shaft member in the first and second directions, to which an exciter is attached.

[0009] Furthermore, in order to solve the above problems, the vibration excitation system according to the present disclosure is a vibration excitation system comprising a fixing device and a vibration exciter attached to the fixing device, wherein the fixing device includes a base, a first shaft member provided on the base and extending in a first direction, and a second shaft member attached to the first shaft member and extending in a second direction perpendicular to the first direction, and movable in the first direction and the second direction relative to the first shaft member, and the vibration exciter is attached to the second shaft member. [Effects of the Invention]

[0010] The present invention provides a fixing device and a vibration system that allow a vibration exciter to be installed so that a structure can be vibrated in both the vertical and horizontal directions at various locations. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view showing an example of a vibration excitation system according to the first embodiment. [Figure 2] Figure 1 is a perspective view of the vibration system in a state where the second shaft member shown is moving horizontally. [Figure 3] Figure 1 is a perspective view of the vibration system in which the second shaft member shown is moved in the vertical direction. [Figure 4] Figure 1 is a perspective view of the vibration system in which the second shaft member shown has moved in both the horizontal and vertical directions. [Figure 5] This figure shows a detailed view of the vibrator shown in Figure 1. [Figure 6] It is a perspective view showing an aspect in which the vibrator shown in FIG. FIG. 1 is oriented in different directions. [Figure 7] It is a perspective view showing an example in which the vibrator shown in FIG. 1 is attached to a fixing device by a different method. [Figure 8A] It is a perspective view of an attached pipe that is an example of an object to be vibrated by the vibrator. [Figure 8B] It is a cross-sectional view taken along line AA of FIG. 8A. [Figure 9] It is a perspective view showing an example of a vibration excitation system according to a second embodiment. [Figure 10] It is a perspective view showing a state where the vibration excitation system shown in FIG. 9 is installed to vibrate an attached pipe. DETAILED DESCRIPTION OF THE INVENTION

[0012] <<First Embodiment>> The overall configuration of the first embodiment will be described with reference to FIG. 1. FIG. 1 is a schematic diagram of a vibration excitation system 100 according to the present embodiment.

[0013] As shown in FIG. 1, the vibration excitation system 100 according to the first embodiment includes a fixing device 1, a vibrator 2, and a mounting member 3.

[0014] <Configuration of Fixing Device> The fixing device 1 includes a base 11, a first shaft member 12, a second shaft member 13, and a shaft fixing portion 14. The fixing device 1 may further include a top plate 15.

[0015] The base 11 is a base on which the first shaft member 12 is provided. The base 11 may have a flat surface. In the example shown in FIG. 1, the base 11 is a flat plate-shaped member having two circular surfaces facing opposite to each other. The shape of the surface of the base 11 may be any shape such as a polygon, an ellipse, or the like. The base 11 is stably installed by being arranged such that the flat surface of the base 11 abuts on the ground.

[0016] The first shaft member 12 is a member provided on the base 11 and extending in a first direction. In a configuration in which the base 11 has at least one plane, the first shaft member 12 extends in a direction perpendicular to the plane opposite to the plane of the base 11 (the plane that contacts the ground when the fixing device 1 is used). As a result, when the base 11 is installed with one plane of the base 11 in contact with the ground, the first direction is the vertical direction (the Z-axis direction in Figure 1). The first shaft member 12 may be integrally formed with the base 11, or it may be formed separately from the base 11 and attached to the base 11.

[0017] The second shaft member 13 is attached to the first shaft member 12 and extends in a second direction perpendicular to the first direction. Therefore, as described above, if the first direction is vertical (the Z-axis direction in Figure 1), the second direction is horizontal (the X-axis direction in Figure 1). A vibrator 2 is attached to the second shaft member 13.

[0018] The second shaft member 13 is movable relative to the first shaft member 12 in a second direction (the X-axis direction in Figure 1). The second shaft member 13 may be positioned so as not to contact the first shaft member 12, and may be fixed to the first shaft member 12 by a shaft fixing portion 14 at any position along the first shaft member 12. The second shaft member 13 may be fixed to the first shaft member 12 by the shaft fixing portion 14 such that the length from the intersection to the end is a desired length. The intersection is the portion of the second shaft member 13 that is attached to the first shaft member 12. For example, if the second shaft member 13 moves in a second direction (the negative direction of the X-axis in Figure 1) from the state shown in Figure 1, as shown in Figure 2, the portion of the second shaft member 13 located on one side of the first shaft member 12 (the negative direction of the X-axis in the example of Figure 2) becomes longer than the portion of the second shaft member 13 located on the other side of the first shaft member 12 (the positive direction of the X-axis in the example of Figure 2).

[0019] Furthermore, as shown in Figure 3, the second shaft member 13 is movable relative to the first shaft member 12 in a first direction (the Z-axis direction in the example of Figure 3). The second shaft member 13 may be attached to the first shaft member 12 such that the length from the intersection point to the end of the first shaft member 12 is a desired length. For example, when the second shaft member 13 moves from the state shown in Figure 1 in the first direction (the positive Z-axis direction in Figure 1), as shown in Figure 3, the portion of the first shaft member 12 located on one side of the second shaft member 13 (the negative Z-axis direction side in Figure 3) becomes longer than the portion of the first shaft member 12 located on the other side of the second shaft member 13 (the positive Z-axis direction side in the example of Figure 3).

[0020] Thus, the second shaft member 13 is movable relative to the first shaft member 12 in a first direction and a second direction. When the second shaft member 13 moves from the state shown in Figure 1 in the first direction (Z-axis direction) and the second direction (X-axis direction), as shown in Figure 4, the portion of the second shaft member 13 located on one side of the first shaft member 12 (the negative X-axis side in the example of Figure 4) becomes longer than the portion of the second shaft member 13 located on the other side of the first shaft member 12 (the positive X-axis side in the example of Figure 4). Also, the portion of the first shaft member 12 located on one side of the second shaft member 13 (the negative Z-axis side in Figure 4) becomes longer than the portion of the first shaft member 12 located on the other side of the second shaft member 13 (the positive Z-axis side in the example of Figure 4).

[0021] The shaft fixing portion 14 is a member that fixes the second shaft member 13 to the first shaft member 12. The shaft fixing portion 14 can have any mechanism for fixing the second shaft member 13 to the first shaft member 12, and the second shaft member 13 can be fixed to the first shaft member 12 by any method.

[0022] The top plate 15 is provided at the end of the first shaft member 12 opposite to the side on which the base 11 is provided. In the example shown in Figure 1, the top plate 15 is a flat plate-like member having two circular surfaces facing each other, with one surface of the top plate 15 provided at the end of the first shaft member 12 opposite to the side on which the base 11 is provided. The shape of the surface of the top plate 15 may be any shape, such as a polygon or an ellipse. Furthermore, the top plate 15 may not have a surface and may be of any shape.

[0023] Furthermore, each component of the fixing device 1 is made of a material with such rigidity that the degree of deformation due to the reaction force when the vibrator 2 attached to the fixing device 1 vibrates the object A is below a predetermined value. The predetermined value is a degree of deformation that is negligible in the vibration characteristics test of the object A.

[0024] <Configuration of the vibrator> As shown in Figure 5, the vibrator 2 includes a vibrator body 21, a first covering surface 22, and two second covering surfaces 23 (second covering surfaces 231 and 232). The vibrator 2 is attached to the second shaft member 13 of the fixing device 1. Specifically, the vibrator 2 is attached to the second shaft member 13 by suspending a mounting member 3 from the second shaft member 13. The specific manner in which the mounting member 3 attaches the vibrator 2 to the second shaft member 13 will be described in detail later.

[0025] The vibrator body 21 vibrates the object A. The vibrator body 21 includes a drive unit 21a and a stinger 21b. The drive unit 21a generates vibration. The stinger 21b is a needle-shaped member held to the drive unit 21a by a screw or the like. The stinger 21b vibrates in the vibration direction when driven by the drive unit 21a, thereby vibrating the object A that is in contact with the tip of the stinger 21b. The vibration direction is from the part of the stinger 21b attached to the drive unit 21a toward the tip.

[0026] The first covering surface 22 is a planar member that covers the surface (bottom surface) of the vibrator body 21 opposite to the vibration direction. Specifically, the first covering surface 22 is a planar member that is positioned on the side of the vibrator body 21 where the stinger 21b is not attached, and is perpendicular to the vibration direction. The first covering surface 22 may have holes that penetrate it. In the example shown in Figure 5, the first covering surface 22 has four holes 22a, 22b, 22c, and 22d. Furthermore, the planar shape of the first covering surface 22 is rectangular, and each of the four corners of the rectangle has four holes 22a, 22b, 22c, and 22d.

[0027] The second covering surfaces 231 and 232 are planar members that cover the surface (side) of the vibrator body 21 that is parallel to the vibration direction. The second covering surfaces 231 and 232 face each other. Each of the second covering surfaces 231 and 232 may have holes that penetrate through it. In the example shown in Figure 5, the second covering surface 231 has two holes 231a and 231b, and the second covering surface 232 has two holes 232a and 232b. Furthermore, the planar shape of the second covering surface 231 may be rectangular. In this configuration, the second covering surface 231 has two holes 231a and 231b at each of two adjacent corners in the vibration direction, and the second covering surface 232 has two holes 232a and 232b at each of the corners opposite to the holes 231a and 231b, respectively.

[0028] Furthermore, the vibrator 2 may also include a rotating shaft member 24.

[0029] The rotating shaft member 24 is a member configured so that the vibrator body 21 can rotate about an axis (φ axis) that extends in the direction normal to the two mutually parallel second covering surfaces 231 and 232. The rotating shaft member 24 may be attached to the vibrator body 21 and slide on the second covering surfaces 231 and 232, rotating together with the vibrator body 21 about the φ axis. The rotating shaft member 24 may be attached to the side surface on the second covering surfaces 231 and 232 side, and is provided so that the vibrator body 21 rotates about the φ axis by sliding around the rotating shaft member 24.

[0030] In the configuration in which the vibrator 2 is equipped with a rotating shaft member 24, the first covering surface 22 is a planar member that, in a predetermined state (before the vibrator body 21 rotates), covers the surface (bottom surface) of the vibrator body 21 opposite to the vibration direction. When the vibrator body 21 rotates 90 degrees around the φ axis from the predetermined state, the first covering surface 22 comes to cover the surface (side surface) of the vibrator body 21 that is parallel to the vibration direction and is not covered by the second covering surfaces 231 and 232.

[0031] Furthermore, in a configuration in which the vibrator 2 includes a rotating shaft member 24, the first covering surface 22 may have holes, while the second covering surfaces 231 and 232 may not have holes.

[0032] <Configuration of mounting components> Mounting member 3 is a member for attaching the vibrator 2 to the fixing device 1.

[0033] In one example, as shown in Figures 1 to 4, the mounting member 3 may be attached to the vibrator 2 and suspended from the second shaft member 13 of the fixing device 1. The mounting member 3 can be a string-like elastic member. The mounting member 3 is attached to the first covering surface 22 through a hole that penetrates the first covering surface 22, or to the second covering surface 23 through a hole that penetrates the second covering surface 23.

[0034] Specifically, when the vibrator 2 vibrates the object A from above, the mounting members 3 are attached to the first covering surface 22 through holes in the first covering surface 22. Specifically, one mounting member 3 is attached to the first covering surface 22 by having both ends pass through two holes (holes 22a and 22b in the example of Figure 5) and being fixed to the first covering surface 22. The other mounting member 3 is attached to the first covering surface 22 by having both ends pass through two holes (holes 22c and 22d in the example of Figure 5) and being fixed to the first covering surface 22. The mounting members 3, with their ends fixed to the first covering surface 22 in this way, are suspended from the second shaft member 13 so that the stinger 21b of the vibrator 2 abuts against the upper part of the object A.

[0035] Furthermore, when the vibrator 2 vibrates the object A from the side, as shown in Figure 6, one mounting member 3 is attached to the two second covering surfaces 23 by having both ends pass through the respective holes (holes 231a and 232a in Figure 5) of the second covering surfaces 231 and 232 and being fixed to them. The other mounting member 3 is attached to the second covering surfaces 231 and 232 by having both ends pass through the respective holes (holes 231b and 232b in Figure 5) of the two second covering surfaces 233 and being fixed to the second covering surfaces 231 and 232. The mounting members 3, with their ends fixed to the second covering surfaces 231 and 232 in this way, are suspended from the second shaft member 13 so that the stinger 21b of the vibrator 2 abuts against the side of the object A.

[0036] The mounting member 3 may be made of an elastic material. This prevents the frequency of vibration applied to object A from being altered from the frequency of vibration generated by the vibrator 2. In addition, the end of the mounting member 3 may be attached to the first covering surface 22 or the second covering surfaces 231 and 232 via an S-shaped hook or the like that passes through the hole, rather than passing through the hole as described above.

[0037] In other examples, the fixing device 1 may be equipped with a mounting member 3-1 instead of mounting member 3. Mounting member 3-1 may be a rigid connecting member that rigidly connects the vibrator 2 to the second shaft member 13. The rigid connecting member can be a screw, a pin, etc. Specifically, when the vibrator 2 vibrates the object A from above, the first covering surface 22 is rigidly connected to the lower side of the second shaft member 13 by mounting member 3-1, as shown in Figure 7. When the vibrator 2 vibrates the object A from below, the first covering surface 22 is rigidly connected to the upper side of the second shaft member 13 by mounting member 3-1. When the vibrator 2 vibrates the object A from the side, the first covering surface 22 is rigidly connected to the second shaft member 13 by mounting member 3-1.

[0038] Furthermore, as described above, the vibrator 2 may also be equipped with a rotating shaft member 24. In such a configuration, as shown in Figure 1, the mounting member 3 may be attached to the first covering surface 22 through a hole in the first covering surface 22 and suspended from the second shaft member 13. In this case, the vibrator body 21 is rotated by the rotating shaft member 24 such that the direction from the vibrator 2 toward the object A is the excitation direction.

[0039] Furthermore, in the configuration described above where the vibrator 2 includes a rotating shaft member 24, the mounting member 3 may be attached to the two second covering surfaces 23 through holes in each of the two second covering surfaces 23, as shown in Figure 6. In this case as well, the vibrator body 21 is rotated by the rotating shaft member 24 such that the direction from the vibrator 2 toward the object A is the excitation direction.

[0040] As described above, the fixing device 1 according to the first embodiment comprises a base 11, a first shaft member 12 provided on the base 11 and extending in a first direction, and a second shaft member 13 attached to the first shaft member 12 and extending in a second direction perpendicular to the first direction, and to which a vibrator 2 is attached, and which is movable in the first and second directions relative to the first shaft member 12. This allows the vibrator 2 to be installed so that the attached pipe 6 can be vibrated in both the vertical and horizontal directions.

[0041] Here, as shown in Figures 8A and 8B, we will explain in detail the effect of the attached pipe 6, which is installed on the support 4 installed on the bridge using U-bolts 5, in vibration characteristic experiments.

[0042] As shown in Figures 8A and 8B, when the attached pipe 6 is installed on the support 4 by a U-bolt 5 tightened with a nut 7, only a portion of the attached pipe 6 is pressed down by the U-bolt 5. Therefore, the attached pipe 6 moves more easily in the direction perpendicular to the direction of extension of the attached pipe 6 (the x-axis direction in Figure 8B) (the y-axis direction in Figure 8B) than in the direction of pressing down. In other words, the response of the attached pipe 6 to excitation from the pressing direction and the response of the attached pipe 6 to excitation from the perpendicular direction have different characteristics. Therefore, in vibration characteristic tests, it is necessary to excite the attached pipe 6 from both the pressing direction and the perpendicular direction in order to recognize each of the different characteristics. In the fixing device 1 of the first embodiment, since the second shaft member 13 is movable in the first and second directions relative to the first shaft member 12, the exciter 2 can be installed to excite the attached pipe 6 from the pressing direction, and the exciter 2 can also be installed to excite the attached pipe 6 from the perpendicular direction. By using the vibrator 2 installed in this manner, the response characteristics of the attached pipe 6 can be fully understood, making it possible to conduct appropriate vibration characteristic experiments.

[0043] Furthermore, as shown in Figure 8A, the attached pipe 6 is constrained to the support 4 by a U-bolt 5 tightened with a nut 7. Therefore, the response of the attached pipe 6 to excitation from the pressing direction and the response to excitation from the opposite direction (i.e., excitation from the support 4 side) have different characteristics. Consequently, in vibration characteristic tests, it is necessary to excite the attached pipe 6 from both the pressing direction and the opposite direction in order to recognize each of these different characteristics. Here, since the second shaft member 13 in the fixing device 1 of the first embodiment is movable in the first and second directions relative to the first shaft member 12, the exciter 2 can be installed to excite the attached pipe 6 from the pressing direction, and the exciter 2 can also be installed to excite the attached pipe 6 from the opposite direction in which it is pressed. By exciting with the exciter 2 installed in this way, the response characteristics of the attached pipe 6 can be fully understood, and it becomes possible to conduct appropriate vibration characteristic experiments.

[0044] Furthermore, the vibration system 100 according to the first embodiment is a vibration system 100 comprising a fixing device 1 and a vibrator 2 attached to the fixing device 1, wherein the fixing device 1 includes a base 11, a first shaft member 12 provided on the base 11 and extending in a first direction, and a second shaft member 13 attached to the first shaft member 12 and extending in a second direction perpendicular to the first direction, and movable in the first and second directions relative to the first shaft member 12, and the vibrator 2 is attached to the second shaft member 13. As a result, the object A can be vibrated by the vibrator 2, which is installed so as to be able to vibrate the attached pipe 6 in both the vertical and horizontal directions.

[0045] Furthermore, in the vibration system 100 according to the first embodiment, the vibrator 2 includes a vibrator body 21 for vibrating an object A, a first covering surface 22 covering the vibrator body 21 on the side opposite to the vibration direction, and a second covering surface 23 covering the vibrator body 21 in a direction perpendicular to the vibration direction. The vibrator 2 further includes a mounting member 3 which is attached to the first covering surface 22 through a hole penetrating the first covering surface 22, or to the second covering surface 23 through a hole penetrating the second covering surface 23, and the mounting member 3 is suspended from a second shaft member 13. This allows the vibrator 2 to be easily attached to the fixing device 1 so that it can vibrate the object A in the vertical direction, and also allows the vibrator 2 to be easily attached to the fixing device 1 so that it can vibrate the object A in the horizontal direction.

[0046] Furthermore, the vibration system 100 according to the first embodiment further includes a mounting member 3-1 that rigidly connects the vibrator 2 to the second shaft member 13. This makes it possible to suppress the change in the frequency of vibration applied to the object A from the frequency of vibration generated by the vibrator 2. In addition, by including the mounting member 3-1, the vibration system 100 can suppress the reduction of the excitation force due to the reaction force from the object A compared to the case where the mounting member 3 is included. Therefore, the vibrator 2 can reliably excite the object A with a force of the desired magnitude at a frequency desired by the tester.

[0047] Furthermore, by rigidly connecting the exciter 2 to the second shaft member 13 using the mounting member 3-1, the exciter 2 can be positioned to excite the object A from below, in addition to from above and the sides. Therefore, the vibration system 100 can excite the object A from even more directions.

[0048] <<Second Embodiment>> The overall configuration of the second embodiment will be described with reference to Figure 9. Figure 9 is a schematic diagram of the vibration excitation system 100-1 according to the second embodiment. In the second embodiment, the same reference numerals are used for functional parts that are the same as in the first embodiment, and their descriptions are omitted.

[0049] As shown in Figure 9, the vibration excitation system 100-1 according to the second embodiment comprises a fixing device 1-1, a vibration exciter 2, and a mounting member 3. Alternatively, the vibration excitation system 100-1 may also include a mounting member 3-1 instead of the mounting member 3.

[0050] <Configuration of the fixing device> The fixing device 1-1 may include a base 11-1, a first shaft member 12, a second shaft member 13, a shaft fixing part 14, and a caster 16. The fixing device 1-2 may further include a top plate 15.

[0051] The base 11-1 is a platform on which the first shaft member 12 is provided. In the example shown in Figure 9, the base 11 is formed by two rectangular prisms extending in mutually perpendicular directions intersecting at the center of the respective extending directions of the prisms. However, the base 11-1 is not limited to the example shown in Figure 9 and may have any shape.

[0052] The caster 16 is mounted on the base 11-1 on the side opposite to the first shaft member 12. In the example shown in Figure 9, the caster 16 is mounted on both ends of the two rectangular prisms constituting the base 11, on the side opposite to the first shaft member 12. As a result, when the fixing device 1-1 is positioned so that the first shaft member 12 is above the base 11-1, the caster 16 is positioned between the base 11-1 and the ground on which the base 11-1 is placed. The caster 16 may also have a stopper. The stopper is a component that prevents the wheel-shaped component of the caster 16 from rotating.

[0053] As described above, the fixing device 1-1 according to the second embodiment further includes a caster 16 attached to the base 11-1 on the opposite side from the first shaft member 12. This allows the vibrator 2 attached to the fixing device 1-1 to vibrate the object A at any position.

[0054] Furthermore, as shown in Figure 10, if the object A is an attached pipe 6, it may be restrained to the support 4 by U-bolts 5 at intervals of approximately 2.0 to 2.5 meters, and may extend longer than the length of the fixing device 1-1 in the second direction. Even in such cases, since the fixing device 1-1 is equipped with casters 16, it is possible to easily move the position of the vibrator 2 so that the vibrator 2 can vibrate various parts of the attached pipe 6. Therefore, the fixing device 1-1 makes it possible to efficiently perform vibration characteristic tests of the attached pipe 6 using the vibrator 2.

[0055] As described above, in the fixing device 1-1 according to the second embodiment, the caster 16 may have a stopper. This allows the fixing device 1-1 to be reliably stopped by the stopper after the position of the vibrator 2 has been changed by moving the fixing device 1-1. This prevents the excitation force from being reduced by the vibrator 2 attached to the fixing device 1-1 due to reaction forces.

[0056] Although the embodiments described above are representative examples, it will be apparent to those skilled in the art that many modifications and substitutions are possible within the spirit and scope of this disclosure. Therefore, the present invention should not be construed as being limited by the embodiments described above, and various modifications and changes are possible without departing from the claims. [Explanation of Symbols]

[0057] 1, 1-1 Fixing device 2. Vibrator 3, 3-1 Mounting components 4 Support 5 U-bolts 6 Attachment pipe 7 nuts 11, 11-1 Base 12 First shaft member 13 Second shaft member 14 Axis fixing part 15 Top plate 16 casters 21 Vibrator body 21a Drive unit 21b Stinger 22 First covering surface 22a, 22b, 22c, 22d holes 23, 231, 232 Second covering surface 24 Rotating shaft member 100, 100-1 Vibration System 231a, 231b holes 232a, 232b holes

Claims

1. A vibration excitation system comprising a fixing device and a vibration exciter attached to the fixing device via a mounting member, The aforementioned fixing device is Base and, A first shaft member extending in a first direction is provided on the base, The first shaft member is attached to the first shaft member, extends in a second direction perpendicular to the first direction, and is movable relative to the first shaft member in the first and second directions, The aforementioned vibrator is The vibrator body that vibrates the object, The vibrator body comprises a first covering surface, which is a planar member that covers the surface opposite to the vibration direction, The vibrator body has a second covering surface, which is a planar member that covers a surface parallel to the vibration direction, A vibration system in which the vibrator is attached to the second shaft member by the mounting member being attached to the first covering surface or the second covering surface, thereby causing the vibrator to vibrate the object from a vertical or horizontal direction.

2. A vibration excitation system comprising a fixing device and a vibration exciter attached to the fixing device via a mounting member, The aforementioned fixing device is Base and, A first shaft member extending in a first direction is provided on the base, The first shaft member is attached to the first shaft member, extends in a second direction perpendicular to the first direction, and is movable relative to the first shaft member in the first and second directions, The aforementioned vibrator is The vibrator body that vibrates the object, The vibrator body comprises a first covering surface, which is a planar member that covers the surface opposite to the vibration direction, The vibrator body has a second covering surface, which is a planar member that covers a surface parallel to the vibration direction, The mounting member is attached to the first covering surface through a hole that penetrates the first covering surface, or to the second covering surface through a hole that penetrates the second covering surface. The vibrator is a vibration system attached to the second shaft member by the mounting member being suspended from the second shaft member.

3. The vibration excitation system according to claim 1 or 2, wherein the mounting member rigidly connects the vibrator to the second shaft member.

4. A vibration excitation system comprising a fixing device and a vibration exciter attached to the fixing device, The aforementioned fixing device is Base and, A first shaft member extending in a first direction is provided on the base, The first shaft member is attached to the first shaft member, extends in a second direction perpendicular to the first direction, and is movable relative to the first shaft member in the first and second directions, The aforementioned vibrator is The vibrator body that vibrates the object, The vibrator body comprises a first covering surface, which is a planar member that covers the surface opposite to the vibration direction, The vibrator body comprises a second covering surface, which is a planar member that covers a surface parallel to the vibration direction, A vibration system comprising a vibrator body configured to be rotatable about an axis extending in the direction normal to two mutually parallel second covering surfaces, and attached to the second axis member.

5. The system further includes an attachment member that is attached to the first covering surface through a hole penetrating the first covering surface, or to the second covering surface through a hole penetrating the second covering surface, The vibration system according to claim 4, wherein the vibrator is attached to the second shaft member by the mounting member being suspended from the second shaft member.

6. The vibration system according to claim 4, further comprising a mounting member for rigidly connecting the vibrator to the second shaft member.

7. The vibration system according to any one of claims 1, 2, or 4, further comprising a caster attached to the base on the opposite side from the first shaft member.

8. The vibration system according to claim 7, wherein the caster has a stopper.

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