JP6359382B2 - Floor vibration control device - Google Patents

Description

  The present invention relates to a floor vibration control device.

In order to reduce the vibration of the floor of a building or civil engineering structure, conventionally, (1) a method of increasing the weight of the floor, (2) a method of increasing the rigidity and strength of the floor, and (3) damping of the floor. A method of increasing the size is generally performed.
Among these methods, there is a method of increasing the damping of the floor using the vibration of the weight in the method of increasing the damping of (3). TMD (tuned mass damper) or AMD (active) using the method is used. A floor vibration control device using a mass damper has been proposed (see Patent Document 1).

Japanese Patent Laid-Open No. 08-296344

However, all of the above prior arts are to vibrate the weight and apply the inertial force to the floor to reduce the floor vibration.
The floor vibration control device using TMD is configured so that the natural frequencies of the floor and the device are substantially matched. When the floor vibrates at the natural frequency, the weight is 90 degrees out of phase with the vibration of the floor. Vibrate. The inertial force of the weight at this time acts on the floor to reduce the shaking. The vibration amplitude of the weight at this time depends on the weight ratio between the floor and the weight and the magnitude of the floor vibration, but is generally about 10 to 20 mm at the maximum. The installation location is below the floor or above the floor, but if the height of the device is large, it will interfere with the installation.
In addition, the floor vibration control device using TMD allows a device having a low height because the vibration amplitude of the weight is not large and a power device for moving the weight is not necessary, but the disadvantage that the vibration reduction effect is small. There is.
The purpose of the floor vibration control device using AMD is to exhibit a higher vibration reduction effect than the floor vibration control device using TMD.
Therefore, the vibration of the weight is large. Since the weight is generally smaller than the floor vibration control device using TMD, the vibration of the weight is further increased. Generally, the vibration amplitude of the weight is required to be 50 to 200 mm.
In addition, a power device for moving the weight is separately required, and the required size in the height direction of the device includes the size of the power device portion. In general, the power unit has a configuration using a rotary motor and a ball screw that generate a rotational motion and convert it into a linear motion, or a configuration that uses a linear actuator that generates a linear motion. In any case, in addition to requiring a space in the vertical direction (vertical direction) in which the weight vibrates, it is necessary to secure a large space in the vertical direction in order to arrange the linear motion actuator.
Since the floor vibration control device using AMD has a high vibration reduction effect, the weight may be smaller than the floor vibration control device using TMD, but a large dimension is required in the height direction. There is a disadvantage that it cannot be installed in a limited space.
The present invention has been made in view of such circumstances, and an object thereof is to realize a floor vibration control apparatus that is advantageous in reducing the installation space in the vertical direction while ensuring a vibration reduction effect. .

In order to achieve the above-mentioned object, the invention according to claim 1 is a floor vibration control device, which is a casing installed on the floor of a structure, and is disposed inside the casing and extends on a horizontal plane. And a flat plate-like weight member having an opening penetrating in the vertical direction, and a female screw that is disposed in the opening portion with the central axis thereof oriented in the horizontal direction and penetrated in a horizontal direction at a location away from the central axis. A disc, a feed screw that is screwed into the female screw and moves in the axial direction to rotate the disc via the female screw, and a feed screw that is supported so as not to move in the vertical direction relative to the weight member. A linear actuator that reciprocates, a disk support that supports the disk in the casing so that it cannot move in the vertical direction and is rotatable, and the feed screw is reciprocated by the linear actuator, whereby the disk is Disk It is rotated about a central axis, wherein the weight member is characterized by being configured to vibrate in a vertical direction in the interior of the housing.
According to a second aspect of the present invention, the disk support portion supports the disk so as to be movable in a direction perpendicular to the central axis of the disk on a horizontal plane, and the linear actuator is configured so that the center of the disk is horizontal on the horizontal plane. The weight member is supported so as not to move in a direction perpendicular to the axis.
According to a third aspect of the present invention, the housing includes a bottom plate and a top plate that face each other in the vertical direction, and an outer peripheral portion of the disk is provided so as to be in contact with the bottom plate and the top plate. The support portion is configured to include the bottom plate and the top plate.
According to a fourth aspect of the present invention, the disk support unit supports the disk so that the disk cannot move in a direction perpendicular to the central axis of the disk on a horizontal plane, and the linear actuator is a center of the disk on the horizontal plane. The weight member is supported by the weight member so as to be movable in a direction orthogonal to the axis.
According to a fifth aspect of the present invention, the housing includes a bearing portion that is disposed so as to be immovable in the vertical and horizontal directions and rotatably supports the disc, and the disc support portion includes the bearing portion. It is characterized by including.
The invention according to claim 6 is characterized in that the weight member is provided with a recess that is recessed in the vertical direction and extends in the axial direction of the feed screw, and the linear actuator and the feed screw are accommodated in the recess. And
The invention according to claim 7 is characterized in that a weight guide portion that supports the weight member so as to be movable in the vertical direction and immovable in the horizontal direction is provided in the casing.
According to an eighth aspect of the present invention, there is provided elastic means for elastically supporting the weight member in the vertical direction and biasing the weight member so as to be positioned at a neutral position that is an intermediate position in the height direction inside the housing. It is provided.
The invention according to claim 9 is characterized in that the rotation about the central axis of the disk by the reciprocating movement of the feed screw is forward and reverse rotation within a predetermined angle range.
The invention described in claim 10 is characterized by being operated by magnetism, air pressure, or oil pressure.

According to the first aspect of the present invention, the disk moves the center axis of the disk by the reciprocating movement of the feed screw in the horizontal direction by the linear actuator that is supported so as not to move in the vertical direction relative to the weight member. The weight member is rotated about the center, so that the weight member vibrates in the vertical direction inside the housing.
Therefore, although the linear motion actuator and the feed screw occupy a horizontal space inside the housing, a space occupied in the vertical direction is minimized.
In addition, since the weight member has a flat plate shape and extends on the horizontal plane, the space occupied in the vertical direction is minimized while occupying the space in the horizontal direction inside the housing.
Therefore, it is possible to reduce the vertical space necessary for arranging the member for vibrating the weight member while securing the space for vibrating the weight member in the vertical direction inside the housing. This is advantageous in reducing the overall height of the body.
Therefore, it is advantageous in reducing the installation space of the floor vibration control device in the vertical direction while ensuring the vibration reduction effect, and is advantageous in installing the floor vibration control device in a limited space such as under the floor. .
A linear motion actuator is disposed on the weight member, and the linear motion actuator vibrates in the vertical direction integrally with the weight member.
Therefore, the weight of the linear motion actuator can be added to the weight of the weight member, which is advantageous in generating a large inertia force and improving the vibration reduction effect.
According to the second aspect of the present invention, the weight member is vibrated in the vertical direction using the linear actuator and the disk, which is advantageous in simplifying the configuration of the floor vibration control device.
According to the third aspect of the present invention, it is advantageous to make the disk support portion compact, and it is advantageous to make the housing compact and to reduce the installation space of the floor vibration control device in the vertical direction. .
According to the fourth aspect of the invention, since the weight member is vibrated in the vertical direction using the linear actuator and the disk, it is advantageous for simplifying the configuration of the floor vibration control device.
According to the fifth aspect of the present invention, it is advantageous to make the disk support portion compact, and it is advantageous to make the housing compact and to reduce the installation space of the floor vibration control device in the vertical direction. .
According to the sixth aspect of the present invention, it is advantageous to make the housing compact while ensuring a large stroke in the vertical direction of the weight member inside the housing, and the installation space of the floor vibration control device in the vertical direction is advantageous. This is more advantageous in reducing the size.
According to the seventh aspect of the invention, the weight guide portion is advantageous in reliably vibrating the weight member in the vertical direction.
According to the eighth aspect of the present invention, the vertical inertia force generated by the weight member can be efficiently applied to the floor via the elastic means and the casing, which is advantageous in suppressing floor vibration. It becomes.
According to the ninth aspect of the present invention, the stroke of the linear motion actuator can be shortened, the length of the feed screw can be shortened, and this is advantageous in making the floor vibration control device compact.
According to the tenth aspect of the present invention, it is possible to suppress frictional resistance and noise generated by the linear motion actuator, which is advantageous in operating the floor vibration control device efficiently and with low noise.

It is a plane sectional view showing the floor vibration control device concerning a 1st embodiment. It is AA sectional view taken on the line of FIG. It is BB sectional drawing of FIG. (A)-(C) are explanatory drawings of the operation state of the floor vibration control apparatus which concerns on 1st Embodiment, and show a plane sectional view. (A)-(C) is explanatory drawing of the operation state of the floor vibration control apparatus which concerns on 1st Embodiment, and respond | corresponds to the AA sectional view taken on the line of FIG. (A)-(C) are explanatory drawings of the operation state of the floor vibration control apparatus which concerns on 1st Embodiment, and respond | correspond to the BB sectional drawing of FIG. It is explanatory drawing which shows the state which has arrange | positioned the floor vibration control apparatus which concerns on 1st Embodiment on the floor of a structure, (A) is explanatory drawing of the state arrange | positioned on the floor, (B) is the state arrange | positioned under the floor It is explanatory drawing of. It is a plane sectional view showing the floor vibration control device concerning a 2nd embodiment. It is AA sectional view taken on the line of FIG. FIG. 10 is a sectional view taken along line BB in FIG. 9. (A)-(C) are explanatory drawings of the operation state of the floor vibration control apparatus which concerns on 2nd Embodiment, and show a plane sectional view. (A)-(C) are explanatory drawings of the operation state of the floor vibration control apparatus which concerns on 2nd Embodiment, and respond | correspond to the AA sectional view taken on the line of FIG. (A)-(C) are explanatory drawings of the operation state of the floor vibration control apparatus which concerns on 2nd Embodiment, and respond | correspond to the BB sectional drawing of FIG.

(First embodiment)
Hereinafter, a floor vibration control device according to an embodiment of the present invention will be described with reference to the drawings.
As illustrated in FIGS. 1 to 3, the floor vibration control device 10 </ b> A includes a housing 12, a weight member 14, and a drive unit 16 that are installed on the floor of a structure.

The housing 12 includes a rectangular plate-like bottom plate 1202, four side plates 1206 standing from four sides of the bottom plate 1202, and an upper plate 1204 connecting the upper edges of the four side plates 1206, and a rectangular plate-like space inside. Has a part.
Hereinafter, for convenience of explanation, the long side direction of the bottom plate 1202 is the X direction, the short side direction of the bottom plate 1202 is the Y direction orthogonal to the X direction, and the direction in which the bottom plate 1202 and the top plate 1204 are opposed is orthogonal to the X direction and the Y direction. The housing 12 is installed on the floor of the structure with the Z direction aligned with the vertical direction.

The weight member 14 is disposed inside the housing 12, has a rectangular flat plate shape with a uniform thickness that is slightly smaller than the bottom plate 1202 and the upper plate 1204, and is disposed so as to extend on a horizontal plane.
The weight member 14 has a concave portion 1404 that accommodates a linear actuator 28 and a feed screw 26, which will be described later, and an opening 1406 that accommodates a disk 22 that will be described later. Yes.
As shown in FIG. 1, the concave portion 1404 extends along the X direction at a location deviated from the central location in the Y direction of the weight member 14.
The opening 1406 extends along the Y direction at the center of the weight member 14 in the X direction.

The drive unit 16 vibrates the weight member 14 in the vertical direction.
The drive unit 16 includes an elastic means 18, a weight guide unit 20, a disk 22, a disk support unit 24, a feed screw 26, and a linear actuator 28.

The elastic means 18 is interposed between the four corners of the lower surface 1403 of the weight member 14 and the four corners of the upper surface 1202A of the bottom plate 1202, and between the four corners of the upper surface 1402 of the weight member 14 and the four corners of the lower surface 1204A of the upper plate 1204. And the same coil spring 1802 having the axis oriented in the Z direction.
The elastic means 18 elastically supports the weight member 14 in the vertical direction, and biases the weight member 14 so as to be positioned at a neutral position (neutral position) that is an intermediate position in the height direction inside the housing 12. .
The elastic means 18 is not limited to the coil spring 1802, and various conventionally known elastic members and elastic devices such as plate springs and air springs can be used.

The weight guide unit 20 includes a guide rail 2002 and a slider 2004.
In this embodiment, the guide rail 2002 extends in the Z direction with an interval in the X direction on the inner surface of a pair of side plates 1206 located on the long side of the bottom plate 1202 among the four side plates 1206.
The slider 2004 engages with each guide rail 2002 at the position of the weight member 14 facing each guide rail 2002 so as to be movable in the Z direction along each guide rail 2002 and immovable in the X and Y directions. doing.
Therefore, the guide rail 2002 and the slider 2004 constitute a weight guide portion 20 that supports the weight member 14 so that the weight member 14 can be moved in the vertical direction while keeping the horizontal state and cannot move in the horizontal direction.

The disk 22 is disposed at the center in the X direction inside the housing 12 with its central axis 2202 facing the X direction and is accommodated in the opening 1406.
The disk 22 has an internal thread 30 that is formed through the X direction in a location away from the central axis 2202.
The female screw 30 may be formed by attaching a female screw member such as a nut provided separately from the disk 22 to the disk 22 or may be formed on the disk 22 itself.
The disk 22 is formed with a uniform thickness, and the diameter is the same as the distance from the upper surface 1202A of the bottom plate 1202 to the lower surface 1204A of the upper plate 1204. The outer peripheral surface of the disk 22 is the same as the upper surface 1202A of the bottom plate 1202. The upper plate 1204 is in contact with the lower surface 1204A.
A member having a very low frictional resistance is attached to the outer peripheral portion of the disk 22 or a surface treatment having a very low frictional resistance is applied, so that the disk 22 contacts the upper surface 1202A of the bottom plate 1202 and the lower surface 1204A of the upper plate 1204. It is designed to be able to rotate smoothly in a state where
In the present embodiment, as shown in FIG. 6, the disk 22 rotates forward and backward within a predetermined angle range, reciprocates within a predetermined range along the Y direction, and moves the disk 22 in this way. The movement stroke of the linear actuator 28 and the length of the feed screw 26 are shortened, and the floor vibration control device 10A is made compact.

The disk support part 24 supports the disk 22 in the housing 12 so that it cannot move in the vertical direction (Z direction) and is rotatable.
In the present embodiment, the disk support unit 24 maintains a posture in which the disk 22 extends on the vertical plane (holds the central axis 2202 of the disk 22 in a horizontal state), and holds the disk 22 in a predetermined angular range. It is supported so as to be able to rotate in the direction (Y direction) perpendicular to the central axis 2202 of the disk 22 on the horizontal plane (on the XY plane).
Specifically, the disk support portion 24 includes two lower ridges 2402 and two upper ridges 2404 in addition to the upper surface 1202A of the bottom plate 1202 and the lower surface 1204A of the upper plate 1204. Yes.
The two lower ridges 2402 extend linearly in the Y direction on the upper surface 1202A of the bottom plate 1202 and are arranged at intervals with the same dimensions as the thickness of the disk 22.
The two upper ridges 2404 extend linearly in the Y direction on the lower surface 1204 </ b> A of the upper plate 1204, and are arranged at intervals with the same dimensions as the thickness of the disk 22.
The lower ridge 2402 and the upper ridge 2404 are disposed at the same position in plan view.
Accordingly, the outer peripheral surface of the disk 22 is sandwiched between the upper surface 1202A of the bottom plate 1202 and the lower surface 1204A of the upper plate 1204, and the outer peripheral portion is formed by the two lower ridges 2402 and the two upper ridges 2404. Is supported in a rotatable manner, and is supported so as not to move in the X and Z directions and to be movable in the Y direction.
Constructing the disk support portion 24 in this way is advantageous in reducing the size of the disk support portion 24, reducing the size of the housing 12, and reducing the installation space for the floor vibration control device 10 </ b> A in the vertical direction. Is advantageous.

The feed screw 26 is engaged with the female screw 30 and moves in the axial direction to rotate the disk 22 via the female screw 30.
In the present embodiment, the feed screw 26 rotates the disk 22 forward and backward through a female screw 30 within a predetermined angle range.
Here, the feed screw 26 is a screw that converts linear motion into rotational motion, and various conventionally known screw structures such as a ball screw can be employed.
The feed screw 26 is accommodated in the recess 1404.

The linear actuator 28 is supported so as not to move in the vertical direction relative to the weight member 14 and reciprocates the feed screw 26.
In the present embodiment, the linear actuator 28 has a rectangular plate-like actuator body 2802 and a rod 2804 supported by the actuator body 2802, and a feed screw 26 coaxially with the rod 2804 at the tip of the rod 2804. Is provided.
In the present embodiment, the actuator body 2802 is supported on the bottom surface of the concave portion 1404 of the weight member 14 so as not to move in a direction perpendicular to the central axis 2202 of the disk 22 on a horizontal plane, and the linear actuator 28 is accommodated in the concave portion 1404. Are arranged.
The direct acting actuator 28 is operated by magnetism, air pressure, or oil pressure.
The linear motion actuator 28 reciprocates the rod 2804 in the axial direction thereof, so that the feed screw 26 shown in FIG. 4 (A) and FIG. The feed screw 26 is reciprocated between the intermediate position shown in FIG. 5B and the retracted position where the feed screw 26 shown in FIGS. 4C and 5C is most retracted.
As the feed screw 26 is reciprocated through the rod 2804 by the linear actuator 28 in this way, the disk 22 is rotated forward and backward about the central axis 2202 of the disk 22, and the weight member 14 is moved inside the housing 12. Vibrates vertically.

Next, the operation of the floor vibration control device 10A of the present embodiment will be described in detail.
The floor vibration control device 10A of the present embodiment is arranged on the floor of the structure or below the floor.
That is, as shown in FIG. 7, the bottom plate 1202 of the housing 12 of the floor vibration control device 10 </ b> A is disposed on the floor by being attached to the upper surface 202 </ b> A of the floor 202. Alternatively, the housing 12 of the floor vibration control device 10A is attached to the frame 4 provided on the lower surface 202B of the floor 202 so that the floor 12 is disposed under the floor.

First, as shown in FIGS. 4B, 5B, and 6B, the disk 22 is located at the reference position at the intermediate position of the feed screw 26. In this case, the weight member 14 is used. Is located at the neutral position P0.
Next, as shown in FIGS. 4 (A), 5 (A), and 6 (A), when the feed screw 26 is projected to the projecting position by the operation of the linear actuator 28, the disk 22 is moved in the forward direction. , The weight member 14 is lowered from the neutral position P0 to the lower limit position P1 while maintaining the horizontal state via the feed screw 26 and the linear actuator 28.
Next, as shown in FIGS. 4B, 5B, and 6B, when the feed screw 26 is retracted to the intermediate position by the operation of the linear motion actuator 28, the disk 22 rotates in the reverse direction. As a result, the weight member 14 rises from the lower limit position P1 to the neutral position P0 while maintaining the horizontal state via the feed screw 26 and the linear actuator 28.
Next, as shown in FIGS. 4 (C), 5 (C), and 6 (C), when the feed screw 26 is further retracted to the retracted position by the operation of the linear actuator 28, the disk 22 is further reversed. By rotating, the weight member 14 rises from the neutral position P0 to the upper limit position P2 while maintaining the horizontal state via the feed screw 26 and the linear actuator 28.
Next, as shown in FIGS. 4 (B), 5 (B), and 6 (B), when the feed screw 26 protrudes from the retracted position to the intermediate position by the operation of the linear actuator 28, the disk 22 moves in the forward direction. , The weight member 14 is lowered from the upper limit position P2 to the neutral position P0 while maintaining the horizontal state via the feed screw 26 and the linear actuator 28.
By repeatedly performing the above operations, the weight member 14 vibrates between the upper limit position P2 and the lower limit position P1, and the inertia member in the vertical direction is generated by the weight member 14.
Thereby, the inertia force of the vertical direction by the weight member 14 acts on the floor 202 via each coil spring 1802 and the housing | casing 12, and the vibration of the floor 202 is suppressed.

According to the present embodiment, the feed screw 26 is reciprocated in the horizontal direction by the linear actuator 28 supported by the weight member 14 so as not to move in the vertical direction, so that the disc 22 is centered on the central axis 2202 of the disc 22. As a result, the weight member 14 vibrates in the vertical direction inside the housing 12.
Therefore, although the linear actuator 28 and the feed screw 26 occupy a horizontal space in the housing 12, the space occupied in the vertical direction is minimized.
Further, since the weight member 14 has a flat plate shape and extends on a horizontal plane, the space occupied in the vertical direction is minimized although the space in the housing 12 is occupied in the horizontal direction.
Therefore, it is possible to reduce the vertical space necessary for arranging the member for vibrating the weight member 14 while securing the space for vibrating the weight member 14 in the vertical direction inside the housing 12. This is advantageous in reducing the overall height of the housing 12.
Therefore, it is advantageous in reducing the installation space of the floor vibration control device 10A in the vertical direction while ensuring a vibration reduction effect, and advantageous in installing the floor vibration control device 10A in a limited space such as under the floor. It becomes.
A linear actuator 28 is disposed on the weight member 14, and the linear actuator 28 vibrates in the vertical direction integrally with the weight member 14.
For this reason, the weight of the linear actuator 28 can be added to the weight of the weight member 14, and a large inertia force can be generated, which is advantageous in improving the vibration reduction effect.

Further, according to the present embodiment, the disk support unit 24 supports the disk 22 so as to be movable in a direction perpendicular to the central axis 2202 of the disk 22 on the horizontal plane, and the linear motion actuator 28 supports the disk on the horizontal plane. Since the weight member 14 is vibrated in the vertical direction by using the linear motion actuator 28 and the disk 22 by being supported by the weight member 14 so as to be immovable in a direction orthogonal to the central axis 2202 of the structure 22, the configuration of the floor vibration control device 10A This is advantageous in simplifying the system.
Further, according to the present embodiment, since the disk 22 is rotated forward and backward within a predetermined angle range by the linear motion actuator 28 and the feed screw 26, the stroke of the linear motion actuator 28 and the length of the feed screw 26 can be shortened. This is advantageous in reducing the size of the floor vibration control device 10A.

In addition, according to the present embodiment, the weight member 14 is supported by the weight guide portion 20 so as to be movable in the vertical direction and immovable in the horizontal direction, so that the weight member 14 is reliably vibrated in the vertical direction. This is advantageous.
In addition, since the concave member 1404 is provided in the weight member 14 and the linear motion actuator 28 and the feed screw 26 are accommodated in the concave portion 1404, the stroke in the vertical direction of the weight member 14 inside the housing 12 is ensured and the housing is secured. 12 is advantageous in achieving compactness, and more advantageous in reducing the installation space of the floor vibration control device 10A in the vertical direction.

Further, according to the present embodiment, the direct acting actuator 28 is operated by magnetism, air pressure, or hydraulic pressure, so that the frictional resistance and noise generated by the direct acting actuator 28 can be suppressed, and the floor vibration control device 10A is made efficient. It is advantageous for operation with good and low noise.
Further, according to the present embodiment, since the weight member 14 is elastically supported in the vertical direction inside the housing 12 by the coil spring 1802, the vertical inertia force generated by the weight member 14 is applied to the coil spring 1802 and the housing. 12 can effectively act on the floor 202, which is advantageous in suppressing the vibration of the floor 202.

(Second Embodiment)
Next, a second embodiment will be described.
The second embodiment differs from the first embodiment in the configuration of the drive unit 16.
In the following embodiments, the same portions and members as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted, and different portions are mainly described.
The second embodiment is different from the first embodiment in that the disk 34 rotates at the same location, and the linear motion actuator 28 and the feed screw 26 move in the Y direction by the rotation of the disk 34.

As shown in FIGS. 8 to 10, the floor vibration control device 10 </ b> B is configured to include a housing 12, a weight member 14, and a drive unit 32, and the housing 12 and the weight member 14 are the first embodiment. It is comprised similarly to a form.
The weight member 14 has a concave portion 1404 that accommodates a linear actuator 28 and a feed screw 26, which will be described later, on the upper surface 1402, and an opening 1406 that accommodates a disk 34, which will be described later. It penetrates in the vertical direction.
In the second embodiment, the feed screw 26 is reciprocated by the linear actuator 28, and the disk 34 is rotated at the same position by the reciprocation of the feed screw 26. Since the moving actuator 28 is reciprocated in the Y direction, the width of the recess 1404 is formed with a size larger than that of the first embodiment.

The drive unit 32 vibrates the weight member 14 in the vertical direction, and includes a disk 34, a disk support unit 36, a feed screw 26, and a linear motion actuator 28.
Similar to the first embodiment, the disk 34 is disposed in the center portion in the X direction inside the housing 12 with the central axis 3402 facing the X direction and is accommodated in the opening 1406.
The disk 34 has a female screw 38 that is formed so as to penetrate in the X direction at a location away from the central axis 3402.

The disk support part 36 maintains a posture in which the disk 34 extends on the vertical plane (holds the central axis 3402 of the disk 34 in a horizontal state), is immovable in the vertical direction (Z direction), and In the second embodiment, the disk support portion 36 is rotatably supported in the housing 12 and moves the disk 34 in a direction that is rotatable and orthogonal to the central axis 3402 of the disk 34 on a horizontal plane. Support impossible.
Specifically, the disk support part 36 is configured by a bearing part 36A that rotatably supports the entire outer periphery of the disk 34, and the bearing part 36A includes inner surfaces of the bottom plate 1202 and the upper plate 1204 that face each other in the Z direction. , A bearing plate 3602 provided across the inner surfaces of the two side plates 1206 facing each other in the Y direction, and a bearing hole 3604.
Constructing the disk support portion 36 in this manner is advantageous in reducing the size of the disk support portion 36, and reducing the installation space of the floor vibration control device 10 </ b> B in the vertical direction by reducing the size of the housing 12. Is advantageous.
A member having a very low frictional resistance is attached to the outer peripheral portion of the disk 34 or the bearing hole 3604 of the bearing plate 3602 or a surface treatment is applied to reduce the frictional resistance, and the disk 34 is supported by the bearing portion 36A. It is designed to be able to rotate smoothly without friction in a heated state.

  The feed screw 26 is engaged with the female screw 38 and moves in the axial direction to rotate the disk 34 via the female screw 38. The feed screw 26 is configured in the same manner as in the first embodiment. Similarly to the first embodiment, 28 is accommodated and disposed in the recess 1404.

The linear actuator 28 is supported so as not to move in the vertical direction relative to the weight member 14, and reciprocates the feed screw 26. As in the first embodiment, the linear actuator 28 is An actuator body 2802 and a rod 2804 are provided, and a feed screw 26 is provided coaxially with the rod 2804 at the tip of the rod 2804.
In the second embodiment, the actuator body 2802 is supported on the bottom surface of the recess 1404 of the weight member 14 so as to be movable in a direction perpendicular to the central axis 3402 of the disk 34 on the horizontal plane, that is, movable in the Y direction. The linear motion actuator 28 is accommodated in the recess 1404.
Specifically, two guide rails 40 extending in the Y direction with an interval in the X direction are provided on the bottom surface of the recess 1404 of the weight member 14.
Below the actuator main body 2802, a slider 42 is provided that engages with each guide rail 40 so as to be movable in the Y direction along each guide rail 40 and not movable in the X direction and Z direction.

The linear motion actuator 28 reciprocates the rod 2804 in the axial direction thereof, and the projecting position where the feed screw 26 shown in FIGS. 11A and 12A is most projected, and FIG. The feed screw 26 is reciprocated between the intermediate position shown in FIG. 12B and the retracted position where the feed screw 26 shown in FIGS. 11C and 12C is most retracted.
As the feed screw 26 is reciprocated through the rod 2804 by the linear actuator 28 in this way, the disk 34 is rotated forward and backward about the central axis 3402 of the disk 34, and the weight member 14 is moved inside the housing 12. Vibrates vertically. When the weight member 14 vibrates, the linear actuator 28 reciprocates in the Y direction along the guide rail 40 via the rod 2804 by the rotation of the disk 34.

Next, the operation of the floor vibration control device 10B of the second embodiment will be described in detail.
Also in the second embodiment, as in the first embodiment, the floor vibration control device 10B is arranged on the floor of the structure 2 or below the floor as shown in FIG.
First, as shown in FIGS. 11 (B), 12 (B), and 13 (B), the disk 34 is located at the reference rotation position. In this case, the weight member 14 is located at the neutral position P0. Suppose you are.
Next, as shown in FIGS. 11 (A), 12 (A), and 13 (A), when the feed screw 26 is protruded to the protruding position by the operation of the linear actuator 28, the disk 34 is moved in the forward direction. , The weight member 14 is lowered from the neutral position P0 to the lower limit position P1 while maintaining the horizontal state via the feed screw 26 and the linear actuator 28.
Next, as shown in FIGS. 11 (B), 12 (B), and 13 (B), when the feed screw 26 is retracted to the intermediate position by the operation of the linear motion actuator 28, the disk 34 rotates in the reverse direction. As a result, the weight member 14 rises from the lower limit position P1 to the neutral position P0 while maintaining the horizontal state via the feed screw 26 and the linear actuator 28.
Next, as shown in FIGS. 11 (C), 12 (C), and 13 (C), when the feed screw 26 is further retracted to the retracted position by the operation of the linear motion actuator 28, the disk 34 is further reversed in the reverse direction. By rotating, the weight member 14 rises from the neutral position P0 to the upper limit position P2 while maintaining the horizontal state via the feed screw 26 and the linear actuator 28.
Next, as shown in FIGS. 11 (B), 12 (B), and 13 (B), when the feed screw 26 projects from the retracted position to the intermediate position by the operation of the linear actuator 28, the disk 34 moves in the forward direction. , The weight member 14 is lowered from the upper limit position P2 to the neutral position P0 while maintaining the horizontal state via the feed screw 26 and the linear actuator 28.
By repeatedly performing the above operations, the weight member 14 vibrates between the upper limit position P2 and the lower limit position P1, and the inertia member in the vertical direction is generated by the weight member 14.
Thereby, the inertia force of the vertical direction by the weight member 14 acts on the floor 202 via each coil spring 1802 and the housing | casing 12, and the vibration of the floor 202 is suppressed.

According to the second embodiment, as in the first embodiment, the space occupied by the linear actuator 28 and the feed screw 26 in the vertical direction can be minimized. This is advantageous in reducing the size.
Further, since the weight member 14 has a flat plate shape and extends on a horizontal plane, the space occupied in the vertical direction is minimized although the space in the housing 12 is occupied in the horizontal direction.
Therefore, it is advantageous in reducing the installation space of the floor vibration control device 10B in the vertical direction while ensuring the vibration reduction effect, and advantageous in installing in a limited space such as under the floor.
Also in the second embodiment, the linear motion actuator 28 is disposed on the weight member 14, and the linear motion actuator 28 vibrates in the vertical direction integrally with the weight member 14.
For this reason, the weight of the linear actuator 28 can be added to the weight of the weight member 14, and a large inertia force can be generated, which is advantageous in improving the vibration reduction effect.

  Further, according to the second embodiment, the disk support unit 36 supports the disk 34 so as to be immovable in the direction orthogonal to the central axis 3402 of the disk 34 on the horizontal plane, and the linear actuator 28 on the horizontal plane. The weight member 14 is vibrated in the vertical direction using the linear actuator 28 and the disk 34 by being supported by the weight member 14 so as to be movable in a direction orthogonal to the central axis 3402 of the disk 34. Therefore, the floor vibration control device 10B This is advantageous in simplifying the configuration.

Also in the second embodiment, since the disk 22 is rotated forward and backward within a predetermined angle range by the linear motion actuator 28 and the feed screw 26, the stroke of the linear motion actuator 28 and the length of the feed screw 26 can be shortened. This is advantageous in reducing the size of the floor vibration control device 10B.
Also in the second embodiment, since the weight member 14 is provided with the recess 1404 and the linear motion actuator 28 and the feed screw 26 are accommodated in the recess 1404, the weight member 14 in the vertical direction inside the housing 12. This is advantageous in making the casing 12 compact while ensuring a large stroke, and more advantageous in reducing the installation space of the floor vibration control device 10B in the vertical direction.

2 Structure 202 Floor 10A Floor vibration control device 10B Floor vibration control device 12 Case 1202 Bottom plate 1204 Top plate 1206 Side plate 14 Weight member 1404 Recess 16 Drive portion 18 Elastic means 20 Weight guide portion 22 Disc 2202 Central shaft 24 Disc support portion 26 Feed screw 28 Linear motion actuator 30 Female screw 32 Drive part 34 Disk 3402 Center shaft 36 Disk support part 36A Bearing part 38 Female screw

Claims (10)

A housing installed on the floor of the structure;
A plate-like weight member that is disposed inside the housing and has an opening that extends in the horizontal direction and penetrates in the vertical direction;
A disk having a female screw that is disposed in the opening portion with its central axis oriented in the horizontal direction and penetrated in a horizontal direction at a location away from the central axis;
A feed screw that rotates in the disk through the female screw by screwing into the female screw and moving in the axial direction;
A linear actuator that is supported so as not to move in the vertical direction relative to the weight member and reciprocates the feed screw;
A disk support part for supporting the disk in the casing so as not to be movable in the vertical direction and to be rotatable;
When the feed screw is reciprocated by the linear actuator, the disk is rotated about the central axis of the disk, and the weight member vibrates in the vertical direction inside the housing. ,
A floor vibration control device characterized by that. The disk support unit supports the disk movably in a direction perpendicular to the central axis of the disk on a horizontal plane,
The linear motion actuator is supported by the weight member so as not to move in a direction perpendicular to the central axis of the disk on a horizontal plane.
The floor vibration control device according to claim 1. The housing includes a bottom plate and an upper plate facing each other in the vertical direction,
The outer periphery of the disk is provided so as to be able to contact the bottom plate and the top plate,
The disk support portion is configured to include the bottom plate and the top plate.
The floor vibration control device according to claim 2. The disk support part supports the disk so that it cannot move in a direction perpendicular to the central axis of the disk on a horizontal plane,
The linear actuator is supported by the weight member so as to be movable in a direction perpendicular to the central axis of the disk on a horizontal plane.
The floor vibration control device according to claim 1. The housing includes a bearing portion that is disposed so as to be immovable in a vertical direction and a horizontal direction inside thereof and rotatably supports the disk.
The disk support portion is configured to include the bearing portion.
The floor vibration control device according to claim 4. The weight member is recessed in the vertical direction and provided with a recess extending in the axial direction of the feed screw,
The linear actuator and the feed screw are housed in the recess,
The floor vibration control device according to any one of claims 1 to 5, wherein A weight guide portion that supports the weight member so as to be movable in the vertical direction and immovable in the horizontal direction is provided in the housing.
The floor vibration control device according to any one of claims 1 to 6, wherein Elastic means for elastically supporting the weight member in a vertical direction and biasing the weight member so as to be located at a neutral position that is an intermediate position in the height direction inside the housing is provided.
The floor vibration control device according to any one of claims 1 to 7, wherein The rotation about the central axis of the disk by the reciprocating movement of the feed screw is a forward / reverse rotation within a predetermined angle range.
The floor vibration control apparatus according to any one of claims 1 to 8, wherein The linear actuator is operated by magnetism, air pressure, or oil pressure,
The floor vibration control apparatus according to any one of claims 1 to 9, wherein

Images