Connecting parts

Abstract

To provide a connection member which is located between a damper on which an axial force acts and a structure, has a simple configuration, and is capable of following displacement in a direction perpendicular to each of the axial direction and an out-of-plane direction.SOLUTION: A connection member 1 is provided between a damper 4 and a structure 2, and includes: one side base plate 3 connected to the structure 2; the other side base plate 5 connected to the damper 4; a vertical displacement follow-up mechanism 9 having a steel bar 7 whose surface facing the one side base plate 3 is arc-shaped, provided in a gap 6 formed between the one side base plate 3 and the structure 2; a one-side engagement portion 10 connected to the one side base plate 3 and extending in a direction of the damper 4; and the other side engagement portion 11 connected to the other side base plate 5 and extending in a direction of the structure 2. The one-side engagement portion 10 and the other-side engagement portion 11 are rotatably connected in the out-of-plane direction relative to the axial direction of the damper 4, and the structure 2 and the one side base plate 3 are displaceably connected in the axial and out-of-plane directions, respectively.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a connecting member provided between a damper and a structure. [Background technology]

[0002] Dampers used in vibration control frames and seismic isolation frames for structures use universal joints or clevises in the connecting members at both ends to accommodate not only axial displacement of the damper but also out-of-plane displacement (see, for example, Patent Document 1). Furthermore, earthquakes accompanied by vertical shaking can also cause large vertical displacements in structures, particularly seismic isolation structures. Therefore, in addition to the above, clevises with spherical plain bearings installed in the clevis pin have been manufactured as connecting members that can also accommodate displacements in directions perpendicular to the axial direction and out-of-plane directions (for example, the horizontal direction) (for example, the up-down direction), providing measures against both lateral and vertical shaking during an earthquake. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-89146 A Summary of the Invention [Problem to be solved by the invention]

[0004] On the other hand, clevises that do not have spherical parts and only respond to out-of-plane (horizontal) displacement are also commercially available as connecting components. This connecting member configuration has the advantage of being less expensive because it does not have a spherical part, but it also has the problem that it cannot follow relative vertical displacement because the margin for displacement of the mating part corresponding to vertical displacement is small.

[0005] The present invention has been developed in consideration of the above-mentioned circumstances, and aims to provide a connecting member that is placed between a damper to which axial force acts and a structure, has a simple structure, and is capable of following displacements in directions perpendicular to both the axial and out-of-plane directions. [Means for solving the problem]

[0006] In order to achieve the above object, a connecting member according to the present invention is a connecting member provided between a damper on which an axial force acts and a structure, the connecting member comprising: a first base plate connected to the structure; a second base plate connected to the damper; and a surface facing at least the first base plate. cross section The device is equipped with an up-down displacement tracking mechanism having an arc-shaped steel rod, a one-side engagement portion connected to the one-side base plate and extending toward the damper, and an other-side engagement portion connected to the other-side base plate and extending toward the structure, wherein the one-side engagement portion and the other-side engagement portion are connected to be freely rotatable in the out-of-plane direction relative to the axial direction of the damper, and the structure and the one-side base plate are connected to be displaceable in directions perpendicular to each of the axial direction and the out-of-plane direction.

[0007] With the above-mentioned configuration, when a load perpendicular to both the axial and out-of-plane directions acts on a mechanism in which the structure and damper are integrated by the connecting member, the base plate on one side can rotate around the point of contact with the steel rod, thereby responding to the displacement. In addition, when a load is applied in an out-of-plane direction, for example, in the horizontal direction, the one-side engaging portion and the other-side engaging portion, which are rotatably connected, rotate according to the direction and magnitude of the load, thereby enabling them to follow the displacement caused by the load. In addition, when a combined load is applied in the out-of-plane direction and in directions perpendicular to the axial direction and the out-of-plane direction, the above mechanism enables them to follow the displacement in each direction.

[0008] In the connecting member of the present invention, the steel bar may have a semicircular cross section.

[0009] With the above configuration, the base plate on one side can be prevented from being damaged due to displacement caused by the action of load, and can smoothly follow the displacement caused by the action of load. In addition, the straight part (flat part) with a semicircular cross section makes it easy to attach the steel bar to the structure.

[0010] In the connecting member of the present invention, a bolt hole for inserting a bolt for connecting to the structure is formed in the one side base plate, and the bolt hole may be formed to a size taking into consideration the allowable movement distance of the damper in the out-of-plane direction and the perpendicular direction relative to the structure.

[0011] With the above-mentioned configuration, the connection between the one-side base plate and the structure of the mechanism in which the structure and damper are integrated by the connecting member is maintained, so that the one-side base plate is able to follow displacements caused by the action of load.

[0012] In the connecting member of the present invention, the one side base plate and the structure may be connected to each other by the bolt passing through the bolt hole and tightening the bolt by hand.

[0013] With the above-described configuration, the bolt and the one-side base plate are connected to be capable of relative movement, so that the one-side base plate can follow displacement caused by the action of a load.

[0014] In the connecting member of the present invention, the vertical displacement following mechanism may include elastic members disposed on both sides of the steel bar.

[0015] With the above configuration, when a sudden, maximum, or other unexpected load is applied in a direction perpendicular to the axial direction and the out-of-plane direction, the displacement due to the load is made gentle, thereby preventing damage to the connecting member and enabling the connecting member to follow the displacement according to the direction and magnitude of the load. In addition, by arranging an elastic member with an appropriate elastic force, it is also possible to restore one side base plate to its original position when the load is released.

[0016] In the connecting member of the present invention, a screw hole may be drilled in a location on the one-side base plate opposite the elastic member, and a countersink of approximately half the axial thickness of the elastic member may be formed in the elastic member at a location opposite the screw hole, and the one-side base plate may be connected to the elastic member by a screw that fits into the countersink and is inserted into the screw hole.

[0017] With the above-mentioned configuration, the elastic member and one side base plate are stably connected, and it is possible to prevent the steel rod sandwiched between the elastic member from falling.

[0018] In the connecting member of the present invention, the vertical displacement following mechanism may also be provided between the damper and the other-side base plate.

[0019] With the above configuration, when a load perpendicular to the axial direction and the out-of-plane direction acts on the mechanism in which the structure and the damper are integrated by the connecting member, the one-side base plate and the other-side base plate can rotate around the contact point with the opposing steel rod to follow the displacement. At this time, the damper is also prevented from being displaced, such as tilted, and the mechanism in which the structure and the damper are integrated by the connecting member can be maintained in a more stable state against the action of external forces. In addition, when a load is applied in an out-of-plane direction, for example, in the horizontal direction, the one-side engaging portion and the other-side engaging portion, which are rotatably connected, rotate according to the direction and magnitude of the load, thereby enabling them to follow the displacement caused by the load. In addition, when a combined load is applied in the out-of-plane direction and in directions perpendicular to the axial direction and the out-of-plane direction, the above mechanism enables them to follow the displacement in each direction. Effect of the Invention

[0020] According to the present invention, it is possible to provide a connecting member that is between a damper to which an axial force acts and a structure, has a simple structure, and is capable of following displacements in directions perpendicular to both the axial and out-of-plane directions. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a partial cross-sectional front view showing an example of a connecting member according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view taken along line A in FIG. [Diagram 3] 2 is a cross-sectional view taken along line B-B' in FIG. [Figure 4] 2 is a cross-sectional view taken along line CC' in FIG. 1. [Diagram 5] 5 is a cross-sectional view showing an example of a connection configuration between one base plate and an elastic member in the embodiment of the present invention. FIG. [Figure 6] 10 is a partial cross-sectional view taken from a front view illustrating a displaced state of the connecting member of the embodiment. FIG. [Figure 7] 10 is a plan view showing a displaced state of the connecting member of the embodiment. FIG. [Figure 8] 13 is a partial cross-sectional view taken from a front view illustrating a modified example of the connecting member of the embodiment. FIG. [Figure 9] 13 is a partial cross-sectional view taken from a front view illustrating a displaced state of a modified example of the connecting member of the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, a clevis (connecting member) according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, a clevis 1 according to this embodiment is provided between a damper 4 to which an axial force acts and a structure 2 whose vibration is controlled by the damper 4. In the following description, the axial direction of the damper 4 is defined as the X direction, the out-of-plane direction (horizontal direction) of the structure 2 perpendicular to the X axis is defined as the Y direction, and the directions perpendicular to both the X and Y directions (vertical directions) are defined as the Z direction.

[0023] The clevis 1 has a first base plate 3 provided adjacent to a structure 2, and a gap 6 is formed between the structure 2 and the first base plate 3. The one-side base plate 3 is provided parallel to the structure 2 in the YZ direction. It is a plate-like member, and the surface in the XZ plane is elongated in the Z direction. It also has a certain strength against external forces. For example, a stainless steel plate-like member is used. In the gap 6, a vertical displacement following mechanism 9 having a steel rod 7 and an elastic member 8 is disposed.

[0024] The steel rod 7 is provided in the gap 6 while being in contact with the structure 2, and has an arc shape on the surface facing the one-side base plate 3. The steel rod 7 is a rod-shaped member that is elongated in the Y direction and has an arc shape, and has a length equivalent to the width of the gap 6 in the X direction and a length equivalent to that of the one-side base plate 3 in the Y direction. Moreover, the material used is, for example, a stainless steel rod.

[0025] The arc-shaped top of the steel rod 7 is the contact point on the surface facing one side of the base plate 3. The shape of the arc surface of the steel rod 7 is about R-2000. In addition, the steel rod 7 has a semicircular shape in the Y-direction cross section, and the straight portion of the cross-sectional shape makes it easy to attach it to the structure 2. The shape of the arcuate surface is not limited to R-2000, but may be any shape as long as the base plate 3 on one side can rotate smoothly around the point of contact with the extension.

[0026] A bolt hole 13a is formed in the structure 2. A bolt hole 13b is formed in one side base plate 3. A plurality of bolt holes 13a and 13b are formed at positions facing each other in the X direction. The size of bolt hole 13b is determined in consideration of the allowable movement distance of damper 4 relative to structure 2 in the Y and Z directions.

[0027] The diameter of the bolt hole 13b is usually 2 mm larger than the diameter of the bolt 12, but in this embodiment, it is set to be approximately 4 mm larger than the diameter of the bolt 12. The diameter of the bolt hole 13a is determined so that the bolt 12 can be fastened thereto.

[0028] One side base plate 3 is connected to structure 2 by inserting bolts 12 through bolt holes 13a and bolt holes 13b. At this time, the bolts 12 are connected by being manually tightened without applying excessive torque. The bolts 12 are provided on both sides of the vertical displacement following mechanism 9 in the Z direction.

[0029] 3 and 4, in this embodiment, a plurality of bolts 12 are provided in the Y direction of one side base plate 3. When a plurality of bolts 12 are provided, the bolts 12 are equally spaced apart. Also, bolt holes 13a and bolt holes 13b are formed in corresponding positions of the structure 2 and one side base plate 3 according to the number of bolts 12. However, this does not apply if the length of the side of one base plate in the Y direction is short and it is difficult to provide multiple bolts 12.

[0030] The elastic members 8 are provided on both sides (top and bottom) of the steel bar 7 in the Z direction. The elastic members 8 are plate-shaped members that are elongated in the Y direction. They also have a hardness that allows them to follow the displacement in the Z direction acting on the clevis 1. For example, a member made of natural rubber is used.

[0031] The elastic member 8 and the steel rod 7 have the same length in the X direction and are arranged within the gap 6 . Moreover, the elastic member 8 and the one-side base plate 3 have the same length in the Y direction.

[0032] The one-side base plate 3 has a length in the Z direction that is sufficient to accommodate at least the vertical displacement following mechanism 9 and the bolts 12 provided on both sides of the vertical displacement following mechanism 9 in the Z direction.

[0033] As shown in FIG. 5, one side base plate 3 has screw holes 14 drilled in a location facing elastic member 8. As shown in FIG. Elastic member 8 is formed with a counterbore 15 having a length of approximately half the thickness in the X direction at a location facing screw hole 14.

[0034] The elastic member 8 is connected to the one-side base plate 3 by a screw 16 that is fitted into the counterbore 15 and inserted into the screw hole 14. In this way, the elastic member 8 is stably connected to the one-side base plate 3. This mechanism also makes it possible to prevent the steel rod 7 sandwiched between the elastic members 8 from falling off.

[0035] 3 and 4, in this embodiment, the screw 16 is provided at the center in the Z direction of the elastic member 8. The screw 16 may also be a bolt.

[0036] At least one screw 16 is used for each of the elastic members 8 provided on both sides of the steel rod 7. Furthermore, multiple screws 16 are provided in the Y direction for each elastic member 8. When multiple screws 16 are provided in the Y direction, adjacent screws 16 are spaced equally apart in the Y direction. Furthermore, screw holes 14 and countersinks 15 are formed in corresponding locations of one side base plate 3 and elastic member 8 according to the number of screws 16. However, this does not apply if the length of the side of one base plate 3 in the Y direction is short and it is difficult to provide a plurality of screws 16.

[0037] The clevis 1 is connected to a damper 4 via a base plate 5 on the other side. Furthermore, the damper 4 and the other-side base plate 5 are connected to each other so that no relative displacement occurs. The shape of the other-side base plate 5 is the same as that of the one-side base plate 3, and has durability against loads due to external forces. For example, a stainless steel plate-shaped member is used. In this embodiment, the method of connecting the damper 4 and the other-side base plate 5 is not limited as long as no relative displacement occurs.

[0038] The clevis 1 has a one-side engagement portion 10 connected to the one-side base plate 3 and extending in the X-direction toward the damper 4, and an other-side engagement portion 11 connected to the other-side base plate 5 and extending in the X-direction toward the structure 2.

[0039] The first engaging portion 10 and the second engaging portion 11 are both plate-shaped members elongated in the X direction, and have a certain strength against external forces. The material used for the first engaging portion 10 and the second engaging portion 11 is, for example, a stainless steel bar. The other-side engaging portion 11 is composed of a pair of plate-like members spaced apart from each other by a distance equal to or greater than the length of the side of the one-side engaging portion 10 in the Z direction.

[0040] The one-side engagement portion 10 is provided at the center of the surface of the one-side base plate 3 facing the damper 4 . The pair of plate-like members constituting the other-side engagement portion 11 are provided on the YZ plane of the other-side base plate 5, and are provided so as to move back and forth in the Z direction relative to the one-side engagement portion 10.

[0041] The one-side engaging portion 10 and the other-side engaging portion 11 each have a connecting hole of the same shape drilled in the Z direction at the center of a surface elongated in the X direction. The one-side engaging portion 10 is fitted in the Z direction with a pair of plate-like members constituting the other-side engaging portion 11. The connection holes of the one-side engaging portion 10 and the other-side engaging portion 11 overlap in the Z direction when fitted together.

[0042] The one-side engaging portion 10 and the other-side engaging portion 11 are rotatably connected to each other by a connecting pin 17 that is drilled in the same shape and corresponds to the shape of the connecting holes that overlap in the Z direction. This mechanism also allows the mechanism in which the structure 2 and the damper 4 are connected by the clevis 1 to rotate freely within the XY plane. The connecting hole is drilled taking into consideration the rotation radius of the one side engaging portion 10 and the other side engaging portion 11 in the XY plane. The connecting structure is not limited to the above-mentioned structure as long as it has a configuration that achieves the desired function. For example, there is a method in which a margin is provided above and below the connecting hole with respect to the fitting thickness of the one-side engaging portion 10 and the other-side engaging portion 11, and fitting members such as caps larger than the diameter of the connecting hole are fitted from above and below to connect them.

[0043] As long as the one-side engaging portion 10 and the other-side engaging portion 11 are connected to be rotatable within the XY plane, there are no limitations on the combination of plate-like members constituting the one-side engaging portion 10 and the other-side engaging portion 11. For example, a pair of plate-like members constituting the other-side engaging portion 11 may be provided in the one-side engaging portion 10, or may be provided in both the one-side engaging portion and the other-side engaging portion.

[0044] Next, the operation and effect of the clevis according to the above-described embodiment will be described with reference to FIGS. As shown in Fig. 6, the clevis 1 in the above-described embodiment is integrated by connecting both ends to the structure 2 and the damper 4, respectively. A mechanism that follows the displacement that occurs when a load in the Z direction acts on this integrated mechanism will be described.

[0045] The bolt hole 13b through which the bolt 12 that connects the structure 2 and the one-side base plate 3 is inserted is drilled with a diameter about 4 mm larger than the bolt 12, and the inserted bolt 12 is tightened by hand. This mechanism allows the one-side base plate 3 to move relative to the structure 2. Since the bolts 12 are provided on both sides of the vertical displacement tracking mechanism 9 in the Z direction, the base plate 3 on one side can move relative to the structure 2.

[0046] In addition, due to the mechanism in which the arc shape on the surface of the steel bar 7 facing the one-side base plate 3 and the top of the arc surface serves as the point of contact with the one-side base plate 3, the one-side base plate 3 is prevented from being damaged by the above-mentioned displacement and is capable of rotating around the point of contact with the arc shape of the steel bar 7.

[0047] By having these mechanisms, the mechanism in which the structure 2 and the damper 4 are integrated by the clevis 1 can follow displacement caused by the action of a load in the Z direction by rotating around the contact point of the steel rod 7.

[0048] Moreover, as shown in FIG. 7, in the above embodiment, it is possible to follow the displacement even when a combined load including that in the Z direction is applied.

[0049] Furthermore, the elastic members 8 provided above and below the steel rod 7 can follow the displacement by freely collapsing according to the magnitude and direction of the displacement caused by the applied load.

[0050] By having this mechanism, when an unexpected load such as a sudden or extremely large load is applied, the displacement due to the load is slowed down, allowing the mechanism to follow the displacement while preventing damage to the mechanism integrated with the clevis 1. Furthermore, by arranging the elastic member 8 with an appropriate elastic force, it is also possible to restore the one-side base plate 3 to its original position when the applied load is released.

[0051] Furthermore, when the reaction force of the damper 4 acting in the X direction acts on the clevis 1, the steel rod 7 bears the reaction force. In this case, if a one-side engagement portion 10 is provided in the center of the surface of the one-side base plate 3 facing the damper 4, and a contact point between the one-side base plate 3 and the steel rod 7 is provided in the center of the surface facing the structure 2, excessive rotational moment due to the above-mentioned reaction force will not act on the one-side base plate 3, and the steel rod 7 will be able to stably bear the reaction force of the damper 4.

[0052] In addition, in this embodiment, as shown in Figure 7, when a load in the Y direction or a combined load including the Y direction is received, one-side engagement portion 10 and the other-side engagement portion 11 engaged by connecting pin 17 can freely rotate within the XY plane around connecting pin 17 depending on the direction and magnitude of the load, thereby making it possible to follow the displacement due to the load.

[0053] Although an embodiment of the clevis according to the present invention has been described above, the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention. For example, in the above embodiment, the vertical displacement following mechanism 9, the bolts 12, and the screws 16 are provided only on the structure 2 side, but they may be provided on both ends on the damper 4 side as shown in FIG.

[0054] According to the above configuration, when a load is applied in the Z direction as shown in Fig. 9, the elastic members 8 provided above and below the steel rods 7 provided on both the structure 2 side and the damper 4 side can freely collapse in accordance with the direction and magnitude of the load applied to the elastic members 8 diagonally located in the X direction, allowing them to follow the displacement caused by the load. At this time, deformation such as tilting of the damper 4 is also prevented, and the mechanism in which the structure 2 and damper 4 are integrated by the clevis 1 can be maintained in a more stable state against the action of external forces.

[0055] In addition, in this embodiment, the vertical displacement tracking mechanism 9 is provided only on the one-side base plate 3 side facing the structure 2, but it may be provided only on the other-side base plate 5 side facing the damper 4. In this case, the bolts 12 and the screws 16 are also provided and connected to the other-side base plate 5.

[0056] In addition, in this embodiment, a mechanism capable of following the displacement due to a load acting in the Z direction is provided in the clevis 1, but if the connecting member is applicable to a member other than the clevis 1, the above mechanism may be provided in that connecting member. [Explanation of symbols]

[0057] 1 Clevis (connecting member) 2 structures 3 One side base plate 4. Damper 5 Other side base plate 6 Gap 7 steel rod 8 Elastic member 9. Vertical displacement tracking mechanism 10 One side engagement portion 11 Other side engaging part 12 Volts 13a Bolt hole 13b Bolt hole 14 Screw holes 15 Counterbore 16 bis 17 Connecting pin

Claims

1. A connecting member provided between a damper to which an axial force acts and a structure, A one-side base plate connected to the structure; The other side base plate connected to the damper; The one-side base plate is provided in a gap formed between the one-side base plate and the structure, a vertical displacement tracking mechanism having a steel bar with a cross-sectional arc shape on at least a surface facing the one-side base plate; a first engaging portion connected to the first base plate and extending in a direction toward the damper; a second-side engagement portion connected to the second-side base plate and extending in the direction toward the structure, the one-side engaging portion and the other-side engaging portion are connected to each other so as to be rotatable in an out-of-plane direction with respect to an axial direction of the damper, A connecting member, characterized in that the structure and the one-side base plate are connected to each other so as to be displaceable in directions perpendicular to each of the axial direction and the out-of-plane direction.

2. The steel bar has a semicircular cross section. The connecting member according to claim 1 .

3. The one-side base plate is formed with a bolt hole through which a bolt for connecting to the structure is inserted, The bolt holes are formed to have a size taking into consideration the allowable movement distance of the damper in the out-of-plane direction and the perpendicular direction relative to the structure. A connecting member according to claim 1 or 2.

4. The one-side base plate and the structure are connected to each other by the bolts through the bolt holes with a tightening force of about hand tightening. The connecting member according to claim 3 .

5. The vertical displacement tracking mechanism has elastic members disposed on both sides of the steel rod. A connecting member according to any one of claims 1 to 4.

6. a screw hole is drilled in a portion of the one-side base plate facing the elastic member, The elastic member has a counterbore formed at a location facing the screw hole, the counterbore being approximately half the axial thickness of the elastic member, The one-side base plate is connected to the elastic member by a screw that is fitted into the countersink and inserted into the screw hole. The connecting member according to claim 5 .

7. The vertical displacement tracking mechanism is also provided between the damper and the other-side base plate. A connecting member according to any one of claims 1 to 6.

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