JP7073080B2 - Vibration test equipment - Google Patents

Description

The present invention relates to a vibration test apparatus.

Conventionally, in order to perform a vibration test of various articles such as parts and tires for automobiles, a vibration test device is known in which the specimens are held on a shaking table and vibrated (for example). , Patent Document 1). According to this type of vibration test device, a test regarding the vibration characteristics and safety of an article is performed while vibrating so as to simulate an actual usage state.

For example, in Patent Document 1, an exciting coil for generating a magnetic field, a magnetic circuit due to a static magnetic field generated by the exciting coil, and a yoke made of a ferromagnetic material for forming a magnetic gap are arranged in the magnetic gap. A vibration test apparatus including a drive coil for generating vibration and a shaking table integrally formed with the drive coil is disclosed. In this vibration test device, Lorentz force is generated by supplying an alternating current to the drive coil, and the shaking table reciprocates along the vertical direction. In this way, the shaking table is vibrated according to the frequency of the alternating current to vibrate the specimen set on the shaking table.

Japanese Unexamined Patent Publication No. 2015-105824

By the way, in the vibration test apparatus described in Patent Document 1, the shaking table is supported by a guide roller to suppress lateral vibration of the shaking table and guide the reciprocating movement of the shaking table. However, if the specimen and the shaking table become heavier, or if the vibration axis of the vibration test device deviates from the center of gravity of the specimen, the support of the shaking table by the guide roller may become unstable, which is the cause. Therefore, there is a concern that the reciprocating movement of the shaking table cannot be guided accurately.

The present invention has been made in consideration of the above-mentioned circumstances, and can accurately guide the vertical reciprocating movement of the shaking table even when the specimen and the shaking table are heavier. It is an object of the present invention to provide a possible vibration test apparatus.

The present invention constitutes means for solving the above-mentioned problems as follows. That is, the present invention is a vibration test apparatus including a vertical shaker that vibrates a specimen held on a shaking table in a vertical direction, and the vertical shaker is fixed to a base installed on a floor. The fixed member is provided with a movable member that can be reciprocated in a direction perpendicular to the fixed member, and the shaking table is a substantially cylindrical movable member and a substantially cylinder that surrounds the outer peripheral side and the upper side of the movable member. It has an adapter table in the shape of an adapter and a table member provided on the upper side of the adapter table on which a specimen is set, and these movable members, an adapter table, and a table member are configured to be integrally movable. Fixed columns are arranged on the base along the outer periphery of the base in a plan view, and each fixed column is arranged so as to face the outer peripheral surface of the adapter table and sandwich the adapter table from the front, back, left and right. A guide mechanism for guiding the vertical movement of the adapter table is provided between the adapter table and each of the fixed columns, and each guide mechanism is fixed to the outer peripheral surface of the adapter table. It is characterized in that it includes a rail member and a pair of upper and lower block members fixed to each of the fixed columns and arranged facing the rail member . The "vertical direction" refers to a direction perpendicular to the surface on which the specimen of the shaking table is set, but is not limited to the vertical direction in a strict sense, and includes a direction slightly deviated from the vertical direction. Meaning.

According to the above configuration, when the shaking table (movable member, adapter table, and table member) vibrates in the vertical direction by providing a plurality of guide mechanisms, the guide mechanism supports the adapter table at a plurality of points, so that the vibration table vibrates. It is possible to suppress the lateral vibration of the table. In addition, since the shaking table is guided by the guide mechanism provided on the outer peripheral side of the adapter table, when the specimen and the shaking table become heavy, or the vibration axis of the vertical shaker deviates from the center of gravity of the specimen. Even in such a case, the vertical reciprocating movement of the shaking table can be guided reliably and accurately, and the accuracy of various vibration tests on the specimen set on the shaking table can be improved. Moreover, since the guide mechanism is provided on the outer peripheral side of the adapter table, the shaking table of the vertical shaker can be easily assembled and adjusted as compared with the case where the guide mechanism is provided inside the adapter table. ..

In the present invention, it is preferable that each rail member is provided from the upper end portion to the lower end portion of the outer peripheral surface of the adapter table.

According to the above configuration, the vibrating table is guided along the rail member fixed to the outer peripheral surface of the adapter table, so that when the specimen and the vibrating table become heavier, or when the vibrating shaft of the vertical vibrating machine becomes large. Even if it deviates from the center of gravity of the specimen, it can guide the vertical reciprocating movement of the shaking table reliably and accurately, improving the accuracy of various vibration tests on the specimen set on the shaking table. Can be made to. Further, the vibration stroke of the shaking table can be secured by the amount corresponding to the length of the rail member, and the vibration test with a relatively large stroke can be easily supported.

In the present invention, the vertical exciter has an exciting coil for generating a static magnetic field, a magnetic circuit due to the static magnetic field generated by the exciting coil, a yoke for forming a magnetic gap, and a yoke in the magnetic gap. It is provided with an arranged drive coil for generating vibration, and is configured to generate vibration by a DC current supplied to the exciting coil and an AC current of a predetermined frequency supplied to the drive coil. It is preferable that the yoke constitutes the fixing member, the exciting coil is integrally provided on the fixing member, and the drive coil is integrally provided on the outer peripheral surface of the movable member. In this configuration, the exciting coil is arranged in an exciting coil accommodating portion formed in the fixing member, and a plurality of holes are formed in the adapter table, and external air is formed through the plurality of holes. However, it is preferable that the excitation coil accommodating portion can be supplied. Further, it is preferable that a plurality of through holes are formed in the fixing member, and air flows in or out of the exciting coil accommodating portion through the plurality of through holes.

According to the above configuration, external air flows into the inside of the adapter table through the plurality of holes of the adapter table. The air that has flowed into the inside of the adapter table is flowed into the exciting coil accommodating portion through the plurality of through holes of the fixing member. On the other hand, the air in the exciting coil accommodating portion is discharged to the outside through a plurality of through holes of the fixing member. In this way, the exciting coil and the yoke constituting the fixing member are cooled by the external air supplied to the exciting coil accommodating portion, so that excessive temperature rise of the exciting coil and the yoke can be suppressed. It is possible to avoid damage to the excitation coil due to heat generation. Moreover, the weight of the shaking table can be reduced by providing a plurality of holes in the adapter table.

In the present invention, it is preferable that the table member is supported by a plurality of air springs arranged on the outer peripheral side of the adapter table.

According to the above configuration, by supporting the outer peripheral portion of the shaking table with a plurality of air springs, the specimen is supported when the specimen is installed on the shaking table, as compared with the configuration in which the specimen is supported only by the central portion of the shaking table. Even if the position of the center of gravity deviates slightly from the vibration axis of the vertical vibration machine, the load of the specimen can be stably supported.

According to the vibration test apparatus of the present invention, by providing a plurality of guide mechanisms, when the shaking table (movable member, adapter table, and table member) vibrates in the vertical direction, the adapter table is supported at a plurality of places by the guide mechanism. Therefore, it is possible to suppress the lateral movement of the shaking table. In addition, since the shaking table is guided by the guide mechanism provided on the outer peripheral side of the adapter table, when the specimen and the shaking table become heavy, or the vibration axis of the vertical shaker deviates from the center of gravity of the specimen. Even in such a case, the vertical reciprocating movement of the shaking table can be guided reliably and accurately, and the accuracy of various vibration tests on the specimen set on the shaking table can be improved.

It is a front view which shows the schematic structure of the vibration test apparatus which concerns on embodiment of this invention. It is a top view of the vibration test apparatus of FIG. FIG. 2 is a cross-sectional view taken along the line A1-A1 of FIG. It is a top view which shows the adapter table of the vibration test apparatus of FIG. 4 is a cross-sectional view taken along the line A2-A2 of FIG. It is a figure for demonstrating the flow of air in a vibration test apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a front view showing a schematic configuration of a vibration test device 1 according to an embodiment of the present invention, FIG. 2 is a plan view of the vibration test device 1, and FIG. 3 is a sectional view taken along line A1-A1 of FIG. .. 4 is a plan view showing the adapter table 20c of the vibration test device 1, FIG. 5 is a sectional view taken along line A2-A2 of FIG. 4, and FIG. 6 is a view for explaining the air flow in the vibration test device 1. be.

As shown in FIGS. 1 to 5, the vibration test device 1 includes a vertical vibrating machine 10 that vibrates the specimen held on the shaking table 20 in the vertical direction. The vertical vibrating machine 10 is arranged at a predetermined position on the base B1 installed on the floor, and the vibrating shaft is in the vertical direction perpendicular to the surface on which the specimen of the shaking table 20 is set (the present embodiment). Then, it is set in the vertical direction). Specifically, the vertical exciter 10 includes a fixing member 11 fixed to the base B1 and a movable member 18 capable of reciprocating in the direction perpendicular to the fixing member 11. The movable member 18 is a substantially cylindrical member whose central axis extends along the vertical direction. The specimen is, for example, an automobile part, a tire, or the like, and is placed at a predetermined position on the shaking table 20 and held by a jig or the like (not shown). The base B1 can be configured by combining a plurality of frame members such as shaped steel. The term "vertical direction" is not limited to the vertical direction in a strict sense, but also includes a direction slightly deviated (tilted) from the vertical direction.

The movable member 18 can also be used as a shaking table for setting the specimen. However, in the present embodiment, a substantially cylindrical adapter table 20c that covers the movable member 18 from the side and above is integrally attached to the movable member 18, and the table member 20a mounted on the adapter table 20c. The specimen is set on the top. That is, in this embodiment, an adapter table 20c having a size several times larger than that of the movable member 18 is used in order to cope with the increase in size of the specimen. The adapter table 20c is integrally connected to the table member 20a via the spacer 20b. Further, the above-mentioned movable member 18 is integrally connected to the lower side of the adapter table 20c by, for example, bolting. The central axis of the adapter table 20c extends along the vertical direction and is located on the same straight line as the central axis of the movable member 18. In the present embodiment, the shaking table 20 has the above-mentioned movable member 18, the adapter table 20c, and the table member 20a, and these movable members 18, the adapter table 20c, and the table member 20a are integrated. It is configured to be movable.

The vertical exciter 10 is configured as an electrokinetic vibration generator, and is housed in a yoke made of a ferromagnetic material having an inner magnetic pole 11a, an outer magnetic pole 11b, and an exciting coil accommodating portion 11c, and an exciting coil accommodating portion 11c. The exciting coil 16 for generating a static magnetic field in the yoke, the drive coil 17 for generating vibration arranged in the magnetic gap G1 formed in the yoke, and the movable member 18 around which the drive coil 17 is wound. And have. The central axis of the drive coil 17 (the exciting axis of the vertical exciter 10), in other words, the central axis of the movable member 18 extends along the vertical direction, and the movable member 18 is provided so as to be able to reciprocate in the vertical direction. ing. As the material of the yoke, a magnetic material having high magnetic permeability and high strength, for example, low carbon steel such as SS400 can be preferably used. As the material of the movable member 18, a non-magnetic high-strength metal (for example, an aluminum alloy), a synthetic resin (for example, carbon fiber), or the like can be preferably used.

In the present embodiment, the fixing member 11 is configured by the above-mentioned yoke. Specifically, the fixing member 11 is divided into a first yoke 12, a second yoke 13, a third yoke 14, and a fourth yoke 15, and is integrally fixed by, for example, bolting. There is. The first yoke 12 is a portion of the base of the entire fixing member 11, and is fixed on the base B1 installed on the floor by, for example, bolting. A cylindrical second yoke 13 serving as an inner magnetic pole 11a is positioned at the center of the first yoke 12, and is fixed by, for example, bolting. A cylindrical third yoke 14 serving as an outer magnetic pole 11b is positioned on the outer peripheral portion of the first yoke 12, and is fixed by, for example, bolting. A cylindrical fourth yoke 15 is positioned on the upper side of the third yoke 14 and on the outer peripheral side of the second yoke 13, and is fixed by, for example, bolting. The exciting coil accommodating portion 11c, which is a cylindrical space, is formed by the first to fourth yokes 12 to 15, and the exciting coil 16 is accommodating in the exciting coil accommodating portion 11c. Further, on the inner peripheral side of the fourth yoke 15, a bush 19 forming a magnetic gap G1 with the outer peripheral surface of the second yoke 13 is fixed, for example, by bolting or the like. Further, the exciting coil 16 is integrally provided on the fixing member 11, and the drive coil 17 is integrally provided on the outer peripheral surface of the movable member 18.

The movable member 18, the adapter table 20c, and the table member 20a constituting the shaking table 20 are provided so as to be integrally reciprocating along the vertical direction. The reciprocating movement of the shaking table 20 is guided by a linear guide 40 (guide mechanism). The shaking table 20 is supported by a plurality of (four in this embodiment) air springs 30. The air spring 30 is provided on a support column 31 installed at a predetermined position on the base B1. The column 31 is integrally connected to the base B1 by, for example, bolting.

Specifically, the table member 20a of the shaking table 20 is formed in a substantially rectangular shape in a plan view, and a cylindrical adapter table 20c is arranged below the substantially central portion of the table member 20a. Air springs 30 are arranged below the four corners of the table member 20a. The four air springs 30 are provided around the outer periphery of the adapter table 20c at equal intervals (every 90 °) in the circumferential direction in a plan view, and the air springs 30 are arranged at the four corners of the base B1. .. The air spring 30 is configured as, for example, a bellows type air spring, and flanges are provided at the upper end and the lower end of the air spring 30, respectively. Further, the intermediate portion of the air spring 30 is squeezed by a plurality of ring members, and the air spring 30 is formed in a bellows shape. The air spring 30 can be expanded and contracted up and down by supplying compressed air through an air pipe (not shown). In this way, by supporting the four corners of the shaking table 20 with the air springs 30, the test piece can be installed on the shaking table 20 as compared with the configuration in which the test piece is supported only by the central portion of the shaking table 20. Even when the position of the center of gravity deviates slightly from the vibration axis of the vertical vibration machine 10, the load of the specimen can be stably supported.

A plurality of (four in this embodiment) rail members 41 are integrally fixed to the outer peripheral surface of the adapter table 20c by, for example, bolting. The rail member 41 extends parallel to the central axis of the adapter table 20c, and is provided from the upper end portion to the lower end portion of the outer peripheral surface of the adapter table 20c. The four rail members 41 are attached to the outer peripheral surface of the adapter table 20c at equal intervals (every 90 °) in the circumferential direction in a plan view. The rail member 41 constitutes a linear guide 40 together with a block member 42 fixed to a fixed pillar 50 installed at a predetermined position on the base B1. The details of the linear guide 40 will be described later.

In the present embodiment, four fixed pillars 50 are provided, and each fixed pillar 50 is arranged so as to face the outer peripheral surface of the adapter table 20c at a predetermined interval. Each fixed pillar 50 is integrally connected to the base B1 by, for example, bolting. The fixed pillar 50 is provided on the outer peripheral portion of the base B1 having a substantially rectangular shape in a plan view, and is arranged along the four sides of the base B1. The adapter table 20c is arranged in the space surrounded by the four fixed pillars 50. That is, four fixed pillars 50 are arranged so as to sandwich the adapter table 20c from the front and back and from the left and right.

In the vertical exciter 10, a magnetic circuit (static magnetic field) is generated in the yoke surrounding the exciting coil 16 by supplying a direct current to the exciting coil 16 via a power amplifier by a control device (not shown). A magnetic gap G1 as described above is formed in the yoke, and a static magnetic field is also generated here. Then, by supplying an alternating current of a predetermined frequency to the drive coil 17 arranged in the magnetic gap G1, the drive coil 17 has a magnetic flux due to the interaction (Lorentz force) between the alternating current and the static magnetic field. In the direction orthogonal to the direction of, the force that changes the direction alternately is received. As a result, the drive coil 17 and the shaking table 20 (movable member 18, adapter table 20c, and table member 20a) integrated with the drive coil 17 vibrate in the vertical direction according to the frequency of the alternating current. In this way, by vibrating the shaking table 20 according to the frequency of the alternating current, vibration tests such as various characteristics and safety of the specimen set on the shaking table 20 are performed.

In the present embodiment, in the vibration test device 1 having the above configuration, a plurality of linear guides 40 (guide mechanisms) are provided to suppress lateral vibration of the shaking table 20 and guide the reciprocating movement of the shaking table 20 in the vertical direction (vertical direction). Has been done. The linear guide 40 will be described with reference to FIGS. 1 to 5.

As shown in FIGS. 1 to 5, the linear guide 40 includes a rail member 41 fixed to the outer peripheral surface of the adapter table 20c and a block member 42 fixed to the fixed pillar 50 and arranged to face the rail member 41. It is equipped with. As described above, the rail member 41 is provided from the upper end portion to the lower end portion of the outer peripheral surface of the adapter table 20c. The block member 42 is provided separately at the upper part and the lower part of the surface of the fixed pillar 50 facing the adapter table 20c. The rail member 41 and the block member 42 are provided at a predetermined distance from each other, and a bearing member (not shown) is interposed between the both members 41 and 42.

Specifically, a groove extending in the vertical direction is formed in the block member 42, and the tip end portion of the rail member 41 is inserted into this groove. A large number of bearing members (for example, metal balls) are interposed between the outer wall surface of the tip of the rail member 41 and the inner wall surface of the recess of the block member 42. Then, the rail member 41 moves with respect to the block member 42 via the bearing member, so that the vertical movement of the shaking table 20 is surely and smoothly guided by the linear guide 40.

The linear guides 40 are provided at four locations between the outer peripheral surface of the adapter table 20c and the fixed pillar 50. The linear guides 40 are arranged at equal intervals (every 90 °) in the circumferential direction of the adapter table 20c in a plan view. By providing a plurality of linear guides 40 in this way, when the shaking table 20 vibrates in the vertical direction, the adapter table 20c is supported at a plurality of places by the linear guides 40, so that lateral vibration of the shaking table 20 can be suppressed. Can be done. Further, since the shaking table 20 is guided along the rail member 41 fixed to the outer peripheral surface of the adapter table 20c, when the specimen and the shaking table 20 become heavier, or when the vibration table 20 is a vibration shaft of the vertical vibration machine 10. Can guide the vertical reciprocating movement of the shaking table 20 reliably and accurately even if it deviates from the center of gravity of the test piece, and various vibration tests on the test piece set on the shaking table 20 can be performed. The accuracy can be improved. Moreover, since the linear guide 40 is provided on the outer peripheral side of the adapter table 20c, it is easier to assemble and adjust the shaking table 20 of the vertical exciter 10 as compared with the case where the guide mechanism is provided inside the adapter table 20c. Can be done.

Further, in the present embodiment, since the rail member 41 is provided from the upper end portion to the lower end portion of the outer peripheral surface of the adapter table 20c, the vibration stroke of the shaking table 20 is corresponding to the length of the rail member 41. Can be secured, and vibration tests with relatively large strokes can be easily supported.

Here, in the vibration test device 1, since the calorific value of the exciting coil 16 housed in the exciting coil accommodating portion 11c of the yoke which is the fixing member 11 becomes relatively large, the exciting coil 16 and the yoke can be efficiently cooled. preferable. However, as described above, there is a concern that the adapter table 20c covers the sides and the upper side of the movable member 18, the exciting coil 16 and the yoke are insufficiently cooled, and the exciting coil 16 and the yoke become hot. Will be done.

Therefore, in the present embodiment, in the vibration test device 1, the exciting coil 16 and the yoke are efficiently cooled by supplying external air to the exciting coil accommodating portion 11c of the yoke. This point will be described with reference to FIGS. 1 to 6.

As shown in FIG. 6, the vibration test device 1 is provided with a suction device 60 for sucking the air inside the vertical shaker 10, and in FIG. 6, the flow of air generated by the suction device 60 is thickened. It is indicated by an arrow. The suction device 60 communicates with the space inside the vertical shaker 10 via an air pipe (not shown), a ventilation pipe 61 provided in the base B1, a duct 62, and the like.

Further, a plurality of holes are formed in the adapter table 20c, and external air can be supplied to the exciting coil accommodating portion 11c of the yoke through the plurality of holes. Specifically, as shown in FIGS. 4 and 5, a plurality of holes 20d and 20e are formed in the peripheral wall portion and the bottom wall portion of the adapter table 20c, respectively. Eight holes 20d are provided at equal intervals in the circumferential direction at the upper part and the lower part of the peripheral wall portion of the adapter table 20c. Further, on the bottom wall portion of the adapter table 20c, four holes 20e are provided at equal intervals around the central axis of the adapter table 20c. The space inside the adapter table 20c is communicated with the outside space through a plurality of holes 20d, 20e provided in the adapter table 20c.

Further, a plurality of through holes are formed in the yoke of the fixing member 11, and air flows in or out of the exciting coil accommodating portion 11c through the plurality of through holes. Specifically, as shown in FIG. 6, a through hole 13a is formed in the central portion of the second yoke 13, and a through hole 12b is formed in the first yoke 12 so as to communicate with the through hole 13a. ing. The through hole 12b communicates with the inside of the base B1 and further communicates with the ventilation pipe 61.

A plurality of through holes 15a (only one is shown in FIG. 6) are formed in the fourth yoke 15, and the through holes 15a are communicated with the exciting coil accommodating portion 11c. Further, a plurality of through holes 12a (only one is shown in FIG. 6) are formed in the first yoke 12, and the through holes 12a are communicated with the exciting coil accommodating portion 11c. The through hole 12a communicates with the inside of the base B1 and further communicates with the ventilation pipe 61.

When the suction device 60 is driven, the air inside the vertical shaker 10 is sucked through the duct 62 and the ventilation pipe 61. As a result, external air flows into the inside of the adapter table 20c through the plurality of holes 20d and 20e of the adapter table 20c. The air that has flowed into the adapter table 20c flows into the exciting coil accommodating portion 11c through the plurality of through holes 15a of the fourth yoke 15. On the other hand, the air in the exciting coil accommodating portion 11c flows out to the inside of the base B1 through the plurality of through holes 12a of the first yoke 12. In this way, the excitation coil 16 and the yoke are cooled (air-cooled) by the external air supplied to the excitation coil accommodating portion 11c. Therefore, even in a configuration in which the adapter table 20c is attached to the movable member 18, the excitation coil 16 is mounted. And, it is possible to suppress an excessive temperature rise of the yoke, and it is possible to avoid damage to the excitation coil 16 due to heat generation. Moreover, the weight of the shaking table 20 can be reduced by providing the adapter table 20c with a plurality of holes 20d and 20e.

The embodiments disclosed this time are exemplary in all respects and are not grounds 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 scope of claims. In addition, the technical scope of the present invention includes all modifications within the meaning and scope equivalent to the scope of claims.

The configuration of the vertical exciter 10 described above is an example, and a vertical exciter having another configuration may be used. For example, in the vertical exciter 10, the number of exciting coils 16 may be changed. Further, a permanent magnet may be used instead of the exciting coil 16. Further, the combination of yokes may be changed to another combination. Further, the vertical exciter 10 may be configured as an exciter using a servomotor.

Further, in the above embodiment, the case where the vibration axis of the vertical exciter 10 is set in the vertical direction (vertical direction) has been described, but the present invention is not limited to this, and the vibration axis of the vertical exciter 10 is not limited to this. It may be set in a direction other than the vertical direction (for example, the horizontal direction).

In the above embodiment, the rail member 41 of the linear guide 40 is provided on the outer peripheral surface of the adapter table 20c, and the block member 42 is provided on the fixed pillar 50. However, the present invention is not limited to this, and the rail member 41 of the linear guide 40 is provided on the fixed pillar 50. The block member 42 may be provided on the outer peripheral surface of the adapter table 20c. Further, in the above embodiment, the shape of the adapter table 20c is cylindrical, but the shape is not limited to this, and any substantially tubular shape that can surround the outer peripheral side and the upper side of the movable member 18 is not cylindrical. It may be in the shape of. For example, the shape of the adapter table 20c may be a polygonal cylinder such as a square cylinder.

The number of air springs 30, the number of linear guides 40, the number of fixed columns 50, and the number of holes 20d and 20e of the adapter table 20c described above are examples and can be changed in various ways. Further, in the above embodiment, bolting is mentioned as an example of the fixing means of each part, but other fixing means (for example, welding or the like) may be adopted.

INDUSTRIAL APPLICABILITY The present invention can be used for a vibration test apparatus provided with an electrokinetic type vertical vibration exciter that vibrates a specimen held on a shaking table in a vertical direction.

1 Vibration test device 10 Vertical vibration machine 11 Fixed member 16 Excitation coil 17 Drive coil 18 Movable member 20 Vibration table 20a Table member 20c Adapter table 30 Air spring 40 Linear guide 41 Rail member 42 Block member 50 Fixed column B1 base

Claims (6)

It is a vibration test device equipped with a vertical vibrating machine that vibrates the specimen held on the shaking table in the vertical direction.
The vertical shaker includes a fixing member fixed to a base installed on the floor and a movable member that can reciprocate in a direction perpendicular to the fixing member.
The shaking table includes a substantially cylindrical movable member, a substantially cylindrical adapter table surrounding the outer peripheral side and the upper side of the movable member, and a table member provided on the upper side of the adapter table on which a specimen is set. The movable member, the adapter table, and the table member are integrally movable.
On the base, fixed pillars are arranged along the outer periphery of the base in a plan view, and each fixed pillar is arranged so as to face the outer peripheral surface of the adapter table and sandwich the adapter table from the front, back, left and right . A guide mechanism for guiding the vertical movement of the adapter table is provided between the adapter table and each of the fixed columns .
Each guide mechanism is characterized by including a rail member fixed to the outer peripheral surface of the adapter table and a pair of upper and lower block members fixed to the fixed pillars and arranged facing the rail member. Vibration test equipment. In the vibration test apparatus according to claim 1,
Each rail member is a vibration test apparatus provided from the upper end portion to the lower end portion of the outer peripheral surface of the adapter table. In the vibration test apparatus according to claim 1 or 2.
The vertical exciter has an exciting coil for generating a static magnetic field, a magnetic circuit due to the static magnetic field generated by the exciting coil, a yoke for forming a magnetic gap, and vibration arranged in the magnetic gap. It is provided with a drive coil for generation, and is configured to generate vibration by a DC current supplied to the exciting coil and an AC current of a predetermined frequency supplied to the drive coil.
The yoke constitutes the fixing member, and the excitation coil is integrally provided with the fixing member.
A vibration test apparatus characterized in that the drive coil is integrally provided on the outer peripheral surface of the movable member. In the vibration test apparatus according to claim 3,
The exciting coil is arranged in the exciting coil accommodating portion formed in the fixing member.
A vibration test apparatus characterized in that a plurality of holes are formed in the adapter table, and external air can be supplied to the excitation coil accommodating portion through the plurality of holes. In the vibration test apparatus according to claim 4,
A vibration test apparatus characterized in that a plurality of through holes are formed in the fixing member, and air flows in or out of the exciting coil accommodating portion through the plurality of through holes. In the vibration test apparatus according to any one of claims 1 to 5.
A vibration test apparatus, wherein the table member is supported by a plurality of air springs arranged on the outer peripheral side of the adapter table.

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