JP5374230B2 - Damper and building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a damper provided in a layer between a first structure and a second structure moving relatively each other, and capable of returning a piston cylinder to an initial position under the condition where a residual deformation is generated in the layer, and to provide a building having the damper. <P>SOLUTION: This damper 22 is provided between the first structure 12 and the second structure 16 moving relatively each other. The first structure 12 is connected with an end part of a piston rod 28 by a first connection means 36, and the second structure 16 is connected with the cylinder 24 by a second connection means 38. The second connection means 38 can change a position of the cylinder 24 with respect to the second structure 16, to a moving direction of the piston rod 28. The piston rod 28 is thereby returned to the initial position under the condition where the residual deformation is generated in the layer 18, when the residual deformation is generated in the layer 18 between the first structure 12 and the second structure 16. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a damper that generates a damping force by the movement of a piston rod inserted into the cylinder relative to the cylinder, and a building having the damper.

  When a base-isolated building where a base isolation layer is provided between the upper structure and the lower structure is greatly shaken by a large earthquake, residual deformation may occur in the base isolation layer after the shaking has subsided. Then, in the current maintenance management manual or the like, it is determined that the upper structure is returned to the original position using a jack or the like when the residual deformation becomes 5 cm or more. However, it takes a lot of labor and cost to return the upper structure to the original position using a jack or the like.

  Here, if residual deformation occurs in the seismic isolation layer where the sliding bearing as the seismic isolation bearing and the oil damper as the damping material are installed, the state of the sliding bearing will remain as long as the clearance is secured. (It can exhibit the same seismic isolation as before the residual deformation occurs), so that the oil damper can be installed with minimal effort and cost without returning the upper structure to its original position. It is desirable to make the state the same as before the residual deformation occurs.

  The state of the oil damper before the residual deformation occurs is that the piston rod is located at the position of the piston rod relative to the cylinder (hereinafter referred to as “initial position”) before the upper structure and the lower structure move relative to each other. This means the state of the oil damper. For example, the position of the piston rod with respect to the cylinder at which the maximum stroke is equal when the piston rod is pulled and when the piston rod is pushed is the initial position.

  As shown in FIGS. 18 and 19, in the oil damper 300 of Patent Document 1, one end portion (rotating portion 304) of the damping means 302 is rotatably fixed to the column 308, and the other end portion (rotating portion) Portion 306) is pivotally fixed to the beam 310.

  Then, when the house is shaken due to an earthquake or the like and the column 308 of the house is tilted to the right side, the rotating unit 304 and the rotating unit 306 are separated from each other, whereby the piston 318 moves to the compression chamber 314 side. At this time, the oil filled in the compression chamber 314 moves to the compression chamber 316 through the orifice 312, so that the fluid friction energy is consumed and the shaking of the house can be suppressed.

  Further, when the column 308 is tilted to the left, the piston 318 moves to the rotating portion 306 side, and the oil filled in the compression chamber 316 moves to the compression chamber 314 through the orifice 312. As a result, fluid frictional energy is consumed, and shaking of the house can be suppressed.

  However, when the oil damper 300 of Patent Document 1 is installed in the seismic isolation layer provided between the upper structure and the lower structure, when the residual deformation occurs in the seismic isolation layer, the state of the oil damper 300 It is difficult to make the same as before the relative movement of the upper structure and the lower structure. That is, it is difficult to return the position of the piston rod 322 relative to the cylinder 320 to the initial position.

JP 2005-232955 A

  In consideration of such a fact, the present invention is provided in a layer between the first structure and the second structure that move relative to each other, and the piston rod can be returned to the initial position in a state where residual deformation occurs in this layer. It is an object of the present invention to provide a damper that can be used and a building having the damper.

A first aspect of the invention is a damper provided between a first structure and a second structure that move relative to each other, wherein a damping force is generated by movement of a piston rod inserted into the cylinder relative to the cylinder. The first connecting means for connecting the end of the cylinder to the first structure, the cylinder to the second structure, and the position of the cylinder relative to the second structure can be changed in the direction of movement of the piston rod. Second connecting means.

In the invention of the first aspect , a damper having a cylinder and a piston rod inserted into the cylinder is provided between the first structure and the second structure that move relative to each other. The damper generates a damping force by movement of the piston rod relative to the cylinder.

  The damper has a first connecting means and a second connecting means. The first connecting means connects the end of the piston rod to the first structure. The second connecting means connects the cylinder to the second structure. Further, the second connecting means can change the position of the cylinder relative to the second structure in the moving direction of the piston rod.

  Therefore, the first structure and the second structure move relative to each other due to an earthquake or the like, and a residual deformation occurs in a layer between the first structure and the second structure (hereinafter referred to as “seismic isolation layer”). When it occurs, the piston rod can be returned to the initial position in a state where residual deformation has occurred in the seismic isolation layer.

  Specifically, the cylinder for the second structure in a state where the end of the piston rod is connected to the first structure (the piston rod is restrained from moving with respect to the first structure and the second structure). By changing the position in the moving direction of the piston rod, it is possible to return the piston rod to the initial position in a state where residual deformation has occurred in the seismic isolation layer.

  Here, the initial position means a position of the piston rod with respect to the cylinder (hereinafter referred to as “initial position”) before the first structure and the second structure are relatively moved due to an earthquake or the like. For example, the position of the piston rod with respect to the cylinder where the maximum strokes are equal when pulled and when pressed is the initial position.

According to a second aspect of the invention, in the damper according to the first aspect, the second connecting means includes an outer peripheral member fixed to the second structure and disposed around the cylinder, and a fastening member that tightens the cylinder by the outer peripheral member. Tightening means for applying an application force and releasing the application.

In the invention of the second aspect , the second connecting means includes an outer peripheral member fixed to the second structure and a tightening means.
The outer peripheral member is disposed around the cylinder. The tightening means applies a tightening force for tightening the cylinder by the outer peripheral member, and releases the application of the tightening force.

  Therefore, when returning the piston rod to the initial position in a state where residual deformation has occurred in the seismic isolation layer, first, the end of the piston rod is connected to the first structure (with respect to the first structure and the second structure). In a state where the piston rod is restrained from moving), the application of the tightening force by the tightening means is released, and the cylinder is moved relative to the outer peripheral member in the moving direction of the piston rod.

  Next, when the piston rod is positioned at the initial position, the movement of the cylinder is stopped and a tightening force is applied by the tightening means. Accordingly, the cylinder is tightened by the outer peripheral member, and the cylinder is fixed to the outer peripheral member.

  As described above, the cylinder may be fixed to the outer circumferential member by applying a clamping force by the clamping means, or the cylinder may be moved with respect to the outer circumferential member after releasing the application of the clamping force by the clamping means. As a result, the position of the piston rod relative to the cylinder can be easily adjusted.

  Further, since the cylinder can be fixed to the outer peripheral member at an arbitrary position of the cylinder in the moving direction of the piston rod, the degree of freedom of the cylinder installation position is high and the cylinder installation position can be finely adjusted.

According to a third aspect of the invention, in the damper of the second aspect , the cylinder clamped by the outer peripheral member is applied to the outer peripheral member when a force acting on the cylinder by the movement of the piston rod becomes a predetermined value or more. Slide.

In the third aspect of the invention, when the force acting on the cylinder by the movement of the piston rod exceeds a predetermined value, the cylinder fastened by the outer peripheral member slides relative to the outer peripheral member.

Therefore, it is possible to prevent the cylinder, the first connecting means, or the second connecting means from being damaged when a force of a predetermined value or more is applied to the cylinder due to the movement of the piston rod due to a large earthquake or the like.
Here, for example, the force acting on the cylinder due to the movement of the piston rod in response to an earthquake motion with a reproduction period of 500 years, the strength of the cylinder, the first connecting means or the second connecting means, and the end of the piston rod are connected. Various values are assumed, such as the strength of the first structure (base, upper housing, etc.) at the location where the cylinder is connected and the strength of the second structure (foundation, upper housing, etc.) at the location where the cylinder is connected.

According to a fourth aspect of the invention, in the damper of the first aspect, the second connecting means includes a joint provided in the cylinder, a support member fixed to the second structure and supporting the joint. Joining means for joining the joint part to the support member and releasing the joining.

In the fourth aspect of the invention, the second connecting means includes a joint provided in the cylinder, a support member fixed to the second structure, and a joining means.
The support member supports the joint portion. The joining means joins the joining portion to the support member and releases the joining.

  Therefore, when returning the piston rod to the initial position in a state where residual deformation has occurred in the seismic isolation layer, first, the end of the piston rod is connected to the first structure (with respect to the first structure and the second structure). In the state where the piston rod is restrained from moving), the joining of the joining portion to the support member is released, and the cylinder is moved relative to the support member in the moving direction of the piston rod.

  Next, when the piston rod is positioned at the initial position, the movement of the cylinder is stopped, and the joining portion is joined to the support member by the joining means. As a result, the cylinder is fixed to the support member.

  In this way, the joining portion can be joined and fixed to the support member by the joining means, or the joining can be released and the cylinder can be moved relative to the support member. It can be done easily.

According to a fifth aspect of the present invention, in the damper according to the first aspect, the second connecting means is provided on an annular member fixed to the second structure and disposed around the cylinder, and provided on an outer wall surface of the cylinder. A male screw screwed into a female screw provided on the inner wall surface of the annular member.

In the fifth aspect of the invention, the second connecting means includes an annular member fixed to the second structure and a male screw provided on the outer wall surface of the cylinder.
The annular member is disposed around the cylinder. An internal thread is provided on the inner wall surface of the annular member. The male screw provided on the outer wall surface of the cylinder is screwed into the female screw provided on the inner wall surface of the annular member.

Therefore, when returning the piston rod to the initial position in a state where residual deformation has occurred in the seismic isolation layer, first, the end of the piston rod is connected to the first structure (with respect to the first structure and the second structure). The cylinder is rotated with respect to the annular member in a state where the piston rod is restrained from moving). Thereby, the cylinder (the male screw provided on the outer wall surface of the cylinder) is screwed into the annular member (the female screw provided on the inner wall surface of the annular member), and the cylinder is moved relative to the annular member in the moving direction of the piston rod. . The cylinder may be rotated manually or, for example, may be rotated by a driving force of a motor installed by applying a reaction force to the second structure.
Next, when the piston rod is positioned at the initial position, the rotation of the cylinder relative to the annular member (movement of the cylinder relative to the annular member) is stopped.

  In this way, by rotating the cylinder with respect to the annular member, the cylinder is moved in the moving direction of the piston rod with respect to the annular member, thereby making it possible to easily adjust the position of the piston rod with respect to the cylinder.

  Further, since the cylinder can be installed on the annular member at an arbitrary position of the cylinder in the moving direction of the piston rod, the degree of freedom of the cylinder installation position is high, and the cylinder installation position can be finely adjusted.

The invention of a sixth aspect is the damper according to any one of the first to fifth aspects, wherein the first structure and the second structure move relative to each other along a horizontal plane or a vertical plane, and the first connection The means connects the end of the piston rod to the first structure so as to be rotatable with respect to an axis perpendicular to the horizontal plane or the vertical plane, and the second connection means connects the cylinder to the second structure. Are coupled so as to be rotatable with respect to an axis orthogonal to the horizontal plane or the vertical plane.

In the sixth aspect of the invention, the damper is provided between the first structure and the second structure that move relative to each other along a horizontal plane or a vertical plane.
The first connecting means connects the end of the piston rod to the first structure so as to be rotatable with respect to an axis orthogonal to the horizontal or vertical plane.
The second connecting means connects the cylinder to the second structure so as to be rotatable with respect to an axis orthogonal to the horizontal or vertical plane.

  Therefore, when the first structure and the second structure move relative to each other in the moving direction of the piston rod along a horizontal plane or a vertical plane, the damper moves by moving the piston rod in the moving direction of the piston rod relative to the cylinder. Since a damping force is generated, relative movement between the first structure and the second structure can be suppressed.

  When the first structure and the second structure move relative to each other in a direction other than the moving direction of the piston rod along the horizontal plane or the vertical plane, the end of the piston rod is an axis orthogonal to the horizontal plane or the vertical plane. Since the cylinder is connected to the second structure so as to be rotatable with respect to an axis perpendicular to the horizontal plane or the vertical plane, the first structure is connected to the first structure. The end of the piston rod follows the movement of the structure.

As a result, the axis of the piston rod is positioned on a straight line connecting the connecting portion where the end of the piston rod is connected to the first structure and the connecting portion where the cylinder is connected to the second structure.
That is, even when the first structure and the second structure move relative to each other in a direction other than the moving direction of the piston rod along a horizontal plane or a vertical plane, the first structure and the second structure are Similarly to the case of relative movement in the moving direction of the piston rod along the vertical plane, the piston rod can be moved in the moving direction of the piston rod with respect to the cylinder.

The seventh aspect of the invention is the damper according to any one of the first to fifth aspects, wherein the first structure and the second structure are relatively moved along a horizontal plane or a vertical plane, and the second connection The means connects the cylinder to the second structure so as to be rotatable with respect to an axis perpendicular to the moving direction of the piston rod and parallel to the horizontal plane or the vertical plane.

In the seventh aspect of the invention, the damper is provided between the first structure and the second structure that move relative to each other along a horizontal plane or a vertical plane.
The second connecting means connects the cylinder to the second structure so as to be rotatable with respect to an axis orthogonal to the moving direction of the piston rod and parallel to the horizontal or vertical plane.

  Therefore, the eccentric moment obtained by applying the force acting on the piston rod to the eccentric distance between the end of the piston rod connected to the first structure and the connecting surface of the second structure connected to the cylinder is the damper. However, since the cylinder is connected to the second structure so as to be rotatable with respect to an axis orthogonal to the moving direction of the piston rod and parallel to the horizontal plane or the vertical plane, the eccentric moment is the second moment. A reaction force that is transmitted to the second structure via the connecting means and balances the eccentric moment is generated in the second structure.

  Thereby, it is not necessary to make the strength of the peripheral wall of the cylinder large enough to resist the eccentric moment (for example, the thickness of the peripheral wall of the cylinder can be reduced). Furthermore, it is possible to avoid the occurrence of a problem that the damper cannot exhibit a predetermined performance due to deformation of the cylinder due to the eccentric moment (for example, the peripheral wall of the cylinder is twisted and a gap is formed between the piston and the cylinder).

The eighth aspect of the invention is the damper according to any one of the first to fifth aspects, wherein the first structure and the second structure are relatively moved along a horizontal plane or a vertical plane, and the first connection The means connects the end of the piston rod to the first structure so as to be rotatable with respect to an axis perpendicular to the horizontal plane or the vertical plane, and the second connection means connects the cylinder to the second structure. Are rotatably connected to an axis perpendicular to the horizontal plane or the vertical plane and an axis perpendicular to the moving direction of the piston rod and parallel to the horizontal plane or the vertical plane.

In the eighth aspect of the invention, the damper is provided between the first structure and the second structure that move relative to each other along the horizontal plane or the vertical plane.
The first connecting means connects the end of the piston rod to the first structure so as to be rotatable with respect to an axis orthogonal to the horizontal or vertical plane.
The second connecting means connects the cylinder to the second structure so as to be rotatable with respect to an axis orthogonal to the horizontal or vertical plane. Further, the second connecting means connects the cylinder to the second structure so as to be rotatable with respect to an axis orthogonal to the moving direction of the piston rod and parallel to the horizontal plane or the vertical plane.
Therefore, the same effect as the sixth and seventh aspects can be obtained.

The ninth aspect of the invention is the building having the damper according to any one of the first to eighth aspects , wherein the damper is provided in the base seismic isolation layer or the intermediate seismic isolation layer.

In the ninth aspect of the invention, the piston rod is in a state in which residual deformation occurs in the base isolation layer or the intermediate isolation layer by providing a damper in the base isolation layer or intermediate isolation layer of the building. It is possible to construct a building having a damper that can return the initial position to the initial position.

  Since the present invention is configured as described above, the piston rod is provided in a layer between the first structure and the second structure that move relative to each other, and the piston rod can be returned to the initial position in a state where residual deformation occurs in this layer. The damper which can be provided, and the building which has this damper can be provided.

It is an elevational view showing a building according to the first embodiment of the present invention. It is a sectional side view which shows the damper which concerns on the 1st Embodiment of this invention. It is an AA arrow line view of FIG. It is a plane sectional view showing an operation of a damper concerning a 1st embodiment of the present invention. It is a sectional side view which shows the effect | action of the damper which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the modification of the damper which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the modification of the damper which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the damper which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which shows the modification of the damper which concerns on the 2nd Embodiment of this invention. It is explanatory drawing which shows the damper which concerns on the 3rd Embodiment of this invention. It is explanatory drawing which shows the damper which concerns on the 4th Embodiment of this invention. It is explanatory drawing which shows the modification of the damper which concerns on embodiment of this invention. It is explanatory drawing which shows the modification of the damper which concerns on embodiment of this invention. It is explanatory drawing which shows the modification of the damper which concerns on embodiment of this invention. It is explanatory drawing which shows the modification of the damper which concerns on embodiment of this invention. It is explanatory drawing which shows the effect | action of the modification of the damper which concerns on embodiment of this invention. It is a sectional side view which shows the modification of the damper which concerns on embodiment of this invention. It is a perspective view which shows the conventional oil damper. It is sectional drawing which shows the conventional oil damper.

  The damper and building of this invention are demonstrated referring drawings. In this embodiment, an example in which the present invention is applied to a reinforced concrete structure is shown. However, a steel structure, a steel reinforced concrete structure, a CFT structure (Concrete-Filled Steel Tube), and a mixed structure thereof. It can be applied to buildings of various structures and scales.

  First, a first embodiment of the present invention will be described.

  As shown in the elevation view of FIG. 1, the building 10 includes a reinforced concrete upper building 12 as a first structure and a reinforced concrete foundation 16 as a second structure provided on the ground 14. Have.

  In the base seismic isolation layer 18 between the upper building 12 and the foundation 16, a sliding bearing 20 is disposed as a seismic isolation bearing installed on the foundation 16 and supporting the upper building 12. Thereby, when an earthquake etc. generate | occur | produce, the upper building 12 and the foundation 16 move relatively along a horizontal surface.

  The base seismic isolation layer 18 is provided with an oil damper 22 as a damper. As shown in the side sectional view of FIG. 2A in which the oil damper 22 of FIG. 1 is enlarged, the oil damper 22 is disposed in the cylindrical cylinder 24 and the cylinder 24 in the axial direction of the cylinder 24. It has a cylindrical piston 26 that moves, and a piston rod 28 that is inserted into the cylinder 24. The piston 26 is fixed to the end of the piston rod 28 and interlocks with the piston rod 28.

  Both ends of the cylinder 24 in the moving direction of the piston rod 28 are closed by end covers 30 and 32, and the piston rod 28 passes through one end cover 30. The cylinder 24 whose both ends are closed by the end covers 30 and 32 is filled with oil O as a viscous fluid.

The internal space of the cylinder 24 is constituted by a first chamber R ₁ and a second chamber R ₂ defined by a piston 26. The outer diameter of the piston 26 is slightly smaller than the inner diameter of the cylinder 24, and a gap is formed between the side surface of the piston 26 and the inner wall surface of the cylinder 24. This gap is closed by an airtight member (not shown) provided on the side surface of the piston 26. The hermetic member is made of, for example, rubber or polymer.

Thus, by closing the gap between the inner wall surface of the side surface and the cylinder 24 of the piston 26 via a gas-tight member, thereby allowing movement of the piston 26 in the cylinder 24, the first chamber R ₁ and the second chamber it is possible to secure the airtightness of R _2.

The piston 26, from the end face 26A of the piston 26 facing the first chamber _{R 1,} a thin through hole 34 which penetrates to the end face 26B of the piston 26 facing the second chamber _{R 2} is formed as an orifice. That is, the oil O filled in the first chamber R ₁ and the second chamber R ₂ through the through hole 34, it can be moved between the first chamber R ₁ and the second chamber R _2.

The oil damper 22 has a connecting mechanism 36 as a first connecting means and a connecting mechanism 38 as a second connecting means.
The coupling mechanism 36 includes a coupling member 40, a pin 42, and a pin hole 44. The pin hole 44 is a through hole formed substantially vertically in the rotating portion 46 located at the end of the piston rod 28, and the pin 42 is inserted therein.

  The connecting member 40 includes a base plate 50 that is provided on the lower surface of the upper building 12 and is fixed to a side surface 48A of a rectangular parallelepiped protruding portion 48 that protrudes downward, and a connecting plate that is provided substantially orthogonal to the plate surface of the base plate 50. 52 and 54. The side surface 48A of the protrusion 48 is a substantially vertical surface.

  The connection plates 52 and 54 are arranged so that the plate surfaces are substantially parallel to each other, and the distance between the lower surface of the connection plate 52 and the upper surface of the connection plate 54 is larger than the thickness of the rotating portion 46 in the vertical direction. A little bigger.

  Pin holes 56 and 58 having the same diameter as the pin hole 44 are formed in the connection plates 52 and 54 substantially vertically. The pin holes 56 and 58 are through holes that penetrate the connecting plates 52 and 54, and are provided at positions where the center of the pin hole 56 and the center of the pin hole 58 substantially coincide with each other in plan view.

  When connecting the rotating portion 46 of the piston rod 28 to the connecting member 40, first, the rotating portion 46 of the piston rod 28 is inserted between the lower surface of the connecting plate 52 and the upper surface of the connecting plate 54.

  Next, the rotating portion 46 of the piston rod 28 is arranged with respect to the connecting plates 52 and 54 so that the center of the pin holes 56 and 58 and the center of the pin hole 44 substantially coincide with each other in plan view. The pin 42 is inserted through the connecting plate 52 in the order of the pin holes 56, 44, 58 and penetrates.

  In this way, the rotating portion 46 of the piston rod 28 is connected to the protruding portion 48. That is, the end portion (rotating portion 46) of the piston rod 28 is connected to the upper building 12 (projecting portion 48) as the first structure by the connecting mechanism 36 as the first connecting means.

  At this time, the axis of the pin 42 inserted into the pin holes 56, 44, 58 is substantially vertical. That is, the coupling mechanism 36 as the first coupling means has the end portion (rotating portion 46) of the piston rod 28 as the first structure body so as to be rotatable with respect to an axis (axis of the pin 42) orthogonal to the horizontal plane. It connects with the upper building 12 (protrusion part 48).

As shown in FIG. 3, which is an AA arrow view of FIG. 2A, the coupling mechanism 38 includes an outer peripheral member 60 and a turntable 62.
The outer peripheral member 60 is disposed around the cylinder 24, and is constituted by an upper outer peripheral member 60A and a lower outer peripheral member 60B. The upper outer peripheral member 60A and the lower outer peripheral member 60B divide a cylindrical member having an inner wall surface substantially the same shape as the outer wall surface of the cylinder 24 into two planes including the axis of the cylindrical member, and further in the circumferential direction. The shape is a little shorter. The upper outer peripheral member 60A and the lower outer peripheral member 60B are arranged so as to sandwich the cylinder 24 from above and below.

The left and right end portions of the upper outer peripheral member 60A and the lower outer peripheral member 60B are formed with flange portions 64A and 64B that protrude outward. As shown in FIG. 3 and FIG. 4 (a), which is a view taken along the line B-B of FIG. 2 (a), the flanges 64A and 64B have three parts at regular intervals with respect to the moving direction of the piston rod 28. Through holes 66A and 66B are formed.
Then, as shown in FIG. 3, the bolt 68 is passed through the through holes 66 </ b> A and 66 </ b> B in this order from the upper side of the flange portion 64 </ b> A, and then the nut 70 is screwed into the end of the bolt 68.

  Further, as shown in FIG. 3, the cylinder 24 is sandwiched from above and below by the upper outer peripheral member 60A and the lower outer peripheral member 60B, and the inner wall surfaces of the upper outer peripheral member 60A and the lower outer peripheral member 60B are in close contact with the outer wall surface of the cylinder 24. , A gap is formed between the lower surface of the flange portion 64A and the upper surface of the flange portion 64B.

  In this state, by tightening the bolt 68 into which the nut 70 is screwed, a tightening force for tightening the cylinder 24 by the upper outer peripheral member 60A and the lower outer peripheral member 60B is applied, and the cylinder 24 is fixed to the outer peripheral member 60. Can do. Further, if the tightened bolt 68 is loosened, the application of the tightening force for tightening the cylinder 24 by the upper outer peripheral member 60A and the lower outer peripheral member 60B is released, and the cylinder 24 can be detached from the outer peripheral member 60. That is, the bolt 68 and the nut 70 are tightening means.

A bearing 72 is provided below the lower outer peripheral member 60B so that the rotation axis is substantially vertical.
The turntable 62 is provided on the upper surface of the base 16 and fixed to an upper surface 74A of a rectangular parallelepiped projecting portion 74 that projects upward, and a columnar shaft member 78 that is integrally provided on the bait plate 76. It consists of and. In a state where the base plate 76 is fixed to the upper surface 74A of the protruding portion 74, the shaft of the shaft member 78 is substantially vertical.
The shaft member 78 is inserted into the bearing 72, and the lower outer peripheral member 60 </ b> B can rotate with respect to the shaft member 78 of the turntable 62.

When connecting the cylinder 24 to the outer peripheral member 60, first, the cylinder 24 is placed on the lower outer peripheral member 60B.
Next, the upper outer peripheral member 60A is arranged on the cylinder 24, and the cylinder 24 is sandwiched between the upper outer peripheral member 60A and the lower outer peripheral member 60B.
Next, after the bolt 68 is passed through the through holes 66 </ b> A and 66 </ b> B in this order, a nut 70 is screwed into the end of the bolt 68 to tighten the bolt 68.

  In this way, the cylinder 24 is fixed to the outer peripheral member 60. That is, the cylinder 24 is connected to the foundation 16 (projecting portion 74) as the second structure by the connecting mechanism 38 as the second connecting means.

  At this time, the shaft of the shaft member 78 is substantially vertical. That is, the connecting mechanism 38 as the second connecting means is configured so that the cylinder 24 is the base 16 (the protruding portion 74) as the second structure so as to be rotatable with respect to an axis orthogonal to the horizontal plane (the axis of the shaft member 78). ).

  Next, the operation and effect of the first embodiment of the present invention will be described.

  As shown in FIG. 4A, when the upper building 12 and the foundation 16 move relative to each other in the moving direction of the piston rod 28 along the horizontal plane due to an external force generated by an earthquake or the like, the external force acts on the piston rod 28. Then, the piston rod 28 moves in the moving direction of the piston rod 28 with respect to the cylinder 24.

At this time, the piston 26 in conjunction with the piston rod 28 moves within the cylinder 24, the first chamber R ₁ and the second chamber R ₂ of the volume is varied. Then, with this, the oil O is moved between the first chamber R ₁ through the through-hole 34 and the second chamber R _2. Here, when the oil O passes through the through hole 34, the oil O moves while contacting the inner wall of the through hole 34, so that the fluid friction energy is consumed and the external force acting on the piston rod 28 is attenuated.

  That is, since the piston rod 28 moves in the moving direction of the piston rod 28 with respect to the cylinder 24, a damping force is generated in the oil damper 22, so that the relative movement between the upper building 12 and the foundation 16 can be suppressed.

  4B, when the upper building 12 and the foundation 16 move relative to each other in a direction other than the moving direction of the piston rod 28 along the horizontal plane, the end of the piston rod 28 ( The rotating part 46) is connected to the upper building 12 (projecting part 48) so as to be rotatable with respect to an axis (pin 42 axis) orthogonal to the horizontal plane, and the cylinder 24 is an axis (axial member) orthogonal to the horizontal plane. Since it is connected to the foundation 16 (projection 74) so as to be rotatable with respect to the shaft (78), the end of the piston rod 28 (rotation 46) is moved by the movement of the upper building 12 (projection 48). Follow.

  As a result, a connecting portion (center of the pin 42) where the end (rotating portion 46) of the piston rod 28 is connected to the upper building 12 and a connecting portion (shaft) where the cylinder 24 is connected to the foundation 16 (projecting portion 74). The axis of the piston rod 28 and the axis of the cylinder 24 are located on a straight line connecting the center G) of the member 78.

  That is, even when the upper building 12 and the foundation 16 move relative to each other in a direction other than the moving direction of the piston rod 28 along the horizontal plane (FIG. 4B), the upper building 12 and the foundation 16 also move along the horizontal plane. As in the case of relative movement in the movement direction of the piston rod 28 (FIG. 4A), the piston rod 28 can be moved in the movement direction of the piston rod 28 with respect to the cylinder 24.

  Further, as shown in the side sectional view of FIG. 2B, the building 10 is greatly shaken due to a large earthquake or the like, and the relative movement between the upper building 12 and the foundation 16 is increased, and the base seismic isolation layer 18 is subjected to residual deformation. When it occurs, it is not necessary to return the upper building 12 to the original position due to the structure of the building 10 (for example, when the residual deformation is smaller than 5 cm, or the base isolation layer 18 is provided with the base isolation layer 18). In the case where all of the apparatus is a sliding bearing and the equipment piping etc. can follow the deformation, etc.), the piston rod 28 is moved to the initial position in the state in which the basic seismic isolation layer 18 is deformed by the procedure described below. Can be returned to.

  Here, the initial position of the piston rod 28 is a position of the piston rod 28 with respect to the cylinder 24 before the upper building 12 and the foundation 16 relatively move, and this position may be determined as appropriate. In the first embodiment, the initial position is the position of the piston rod 28 relative to the cylinder 24 where the maximum stroke of the piston rod 28 becomes equal when pulled. That is, in the oil damper 22 of the first embodiment, as shown in FIG. 2A, the piston 26 moves over the entire axial length of the cylinder 24, so the piston 26 is arranged at the axial center of the cylinder 24. The position of the piston rod 28 when it is being used is the initial position of the piston rod 28.

  First, as shown in FIG. 2B, the end (rotating portion 46) of the piston rod 28 is connected to the connecting member 40 fixed to the protruding portion 48 of the upper building 12 (with respect to the upper building 12 and the foundation 16). In the state where the piston rod 28 is restrained from moving), the tightened bolt 68 is loosened (see FIG. 3), and the tightening force for tightening the cylinder 24 by the upper outer peripheral member 60A and the lower outer peripheral member 60B is reduced. Release the grant.

Next, as shown in the side sectional view of FIG. 2C, the cylinder 24 is moved with respect to the outer circumferential member 60 in the moving direction of the piston rod 28. Then, when the piston rod 28 is positioned at the initial position, the movement of the cylinder 24 is stopped.
Next, the bolts 68 are tightened to apply a tightening force for tightening the cylinder 24 by the upper outer peripheral member 60 </ b> A and the lower outer peripheral member 60 </ b> B, and the cylinder 24 is fixed to the outer peripheral member 60.

  In this manner, the cylinder 24 is fixed to the outer peripheral member 60 by applying a tightening force for tightening the cylinder 24 by the upper outer peripheral member 60A and the lower outer peripheral member 60B, or the cylinder 24 is tightened by the upper outer peripheral member 60A and the lower outer peripheral member 60B. Since the cylinder 24 can be moved with respect to the outer circumferential member 60 after the application of the tightening force is released, the position adjustment of the piston rod 28 with respect to the cylinder 24 can be easily performed.

  In addition, since the cylinder 24 can be fixed to the outer peripheral member 60 at an arbitrary position of the cylinder 24 in the moving direction of the piston rod 28, the degree of freedom of the cylinder installation position is high and the cylinder installation position can be finely adjusted.

  The first embodiment of the present invention has been described above.

  In the first embodiment, the bolt 68 is tightened, the tightening force for tightening the cylinder 24 is applied by the upper outer peripheral member 60A and the lower outer peripheral member 60B, and the cylinder 24 is fixed to the outer peripheral member 60. For example, as shown in the side sectional views of FIGS. 5A and 5B, when the force acting on the cylinder 24 by the movement of the piston rod 28 exceeds a predetermined value, the cylinder is tightened by the outer peripheral member 60. You may set the magnitude | size of the clamping force which clamps the cylinder 24 by 60 A of upper outer periphery members, and 60 A of lower outer periphery members so that 24 may slide with respect to the outer periphery member 60. FIG.

  Here, the predetermined value includes, for example, the force acting on the cylinder 24 due to the movement of the piston rod 28 due to the seismic motion with a reproduction period of 500 years, the strength of the cylinder 24, the coupling mechanism 36, or the coupling mechanism 38, Various values are assumed, such as the strength of the upper building 12 (upper frame) at the location to be connected and the strength of the foundation 16 at the location to which the cylinder 24 is connected.

In FIG. 5 (a), when the building 10 by a large earthquake or the like has become rapidly shaking excessive movement speed of the piston 26 is a piston which second chamber R ₂ is applied to the cylinder 24 is rapidly compressed A state in which the force in the moving direction of the rod 28 is equal to or greater than a predetermined value is shown.

  FIG. 5B shows the moving direction of the piston rod 28 that acts on the cylinder 24 when the piston 26 hits the end cover 32 when the building 10 is greatly shaken due to a large earthquake or the like and the moving amount of the piston 26 becomes excessive. A state in which the force is greater than or equal to a predetermined value is shown.

  By doing so, it is possible to prevent the cylinder 24 or the coupling mechanisms 36 and 38 from being damaged when a force greater than a predetermined value is applied to the cylinder 24 due to the movement of the piston rod 28 due to a large earthquake or the like.

  Further, in the first embodiment, the example in which the tightening means is constituted by the bolt 68 and the nut 70 is shown. However, the tightening means applies the tightening force for tightening the cylinder 24 by the outer peripheral member and the cylinder by the outer peripheral member. What is necessary is just to be able to cancel the application of the tightening force for tightening 24.

  For example, FIG. 6C is a side view of FIG. 6A, FIG. 6B is a CC arrow view of FIG. 6A, and FIG. 6C is a DD arrow view of FIG. The fastening means may be a ring 80 as shown in FIG. The ring 80 applies a tightening force for tightening the cylinder 24 by the upper outer peripheral member 84A and the lower outer peripheral member 84B using the principle of shrink fitting.

  In the connecting mechanism 82 of FIG. 6A, the outer peripheral member 84 is composed of an upper outer peripheral member 84A and a lower outer peripheral member 84B, and the upper outer peripheral member 84A and the lower outer peripheral member 84B are the outer peripheral members shown in FIG. 60, the flange portions 64A and 64B are eliminated from the upper outer peripheral member 60A and the lower outer peripheral member 60B.

  Further, the upper outer peripheral member 84A and the lower outer peripheral member 84B are formed with a groove 86 in which the ring 80 is accommodated along the circumferential direction. The groove 86 has a rectangular cross section and is formed at both ends of the outer peripheral member 84 in the moving direction of the piston rod 28.

  A bearing 72 is provided below the lower outer peripheral member 84 </ b> B so that the rotation shaft is substantially vertical, and a shaft member 78 having a substantially vertical shaft is inserted into the bearing 72. As a result, the lower outer peripheral member 84 </ b> B can rotate with respect to the shaft member 78 of the turntable 62.

When connecting the cylinder 24 to the outer peripheral member 84, the cylinder 24 is first placed on the lower outer peripheral member 84B, as shown in the perspective view of FIG.
Next, the upper outer peripheral member 84A is disposed on the cylinder 24, and the cylinder 24 is sandwiched between the upper outer peripheral member 84A and the lower outer peripheral member 84B.

  Next, the ring 80 heated and expanded (the inner diameter is larger than the outer diameter of the outer peripheral member 84) is disposed so that the bottom surface of the groove 86 faces the inner wall surface, and then the ring 80 is cooled. As a result, the ring 80 contracts and is accommodated in the groove 86 and tightens the outer peripheral member 84. That is, a tightening force for tightening the cylinder 24 by the upper outer peripheral member 84A and the lower outer peripheral member 84B is applied by the ring 80 as the tightening means.

  In this way, the cylinder 24 is fixed to the outer peripheral member 84. That is, the cylinder 24 is connected to the foundation 16 (projection 74) as the second structure by the connection mechanism 82 as the second connection means.

  When the cylinder 24 is moved with respect to the outer peripheral member 84, first, the ring 80 is heated and expanded (the inner diameter is made larger than the outer diameter of the outer peripheral member 84), and the cylinder is moved by the upper outer peripheral member 84A and the lower outer peripheral member 84B. Release the tightening force to tighten 24.

Next, the cylinder 24 is moved in the moving direction of the piston rod 28 with respect to the outer peripheral member 84, and the movement of the cylinder 24 is stopped when the piston rod 28 is positioned at the initial position.
Next, the ring 80 is cooled, and a clamping force for tightening the cylinder 24 is applied by the upper outer peripheral member 84 </ b> A and the lower outer peripheral member 84 </ b> B, and the cylinder 24 is fixed to the outer peripheral member 84.

  In this way, the connecting mechanism 82 as the second connecting means can change the position of the cylinder 24 relative to the base 16 as the second structure in the moving direction of the piston rod 28.

  The ring 80 only needs to be a member that can control expansion and contraction, as well as ordinary steel materials (SS material, SM material, SN material), for example, the ring 80 is formed of a shape memory alloy. May be. As a shape memory alloy capable of forming the ring 80, Fe-28% Mn-6% Si-5% Cr-0.5% NbC alloy which is a kind of Fe-Mn-Si group of iron-based shape memory alloy (Hereinafter referred to as “NbC-added alloy”), Fe-28% Mn-6% Si-5% Cr alloy, Fe-32% Mn-6% Si alloy, Fe-20% Mn-5% Si-8% Examples thereof include a Cr-5% Ni alloy, a Fe-16% Mn-5% Si-12% Cr-5% Ni alloy, and the like. As a material for forming the ring 80, an Fe-28% Mn-6% Si-5% Cr alloy is preferably used, and an NbC-added alloy is more preferably used.

  Next, a second embodiment of the present invention will be described.

  In the second embodiment, the configuration of the coupling mechanism 38 of the first embodiment is different. Therefore, in the description of the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and are appropriately omitted.

In the second embodiment, as shown in a side view of FIG. 8 (a) and FIG. 8 (b), which is a view taken along the line EE of FIG. 8 (a), along the horizontal plane due to the occurrence of an earthquake or the like. An oil damper 22 as a damper is provided in the base seismic isolation layer 18 between the relatively moving upper building 12 and the foundation 16.
The oil damper 22 includes a connecting mechanism 36 (see FIG. 2A) as a first connecting means and a connecting mechanism 88 as a second connecting means.
The connection mechanism 88 includes a joint 90, a support member 92, and a turntable 62.

The joining portion 90 is a block-like member that is fixed to the lower surface of the cylinder 24 and is provided over the entire axial length of the cylinder 24.
A plurality of female screws 94 are formed on the lower surface of the joint portion 90 at equal intervals over the moving direction of the piston rod 28. The female screw 94 is formed symmetrically with respect to the center of the cross section of the cylinder 24.

  The support member 92 includes a receiving plate 96 that supports the joint 90 and a columnar member 98 that supports the receiving plate 96. A bearing 72 is provided below the cylindrical member 98 so that the rotation axis is substantially vertical, and a shaft member 78 having a substantially vertical axis is inserted into the bearing 72. Thereby, the support member 92 can rotate with respect to the shaft member 78 of the turntable 62. That is, the support member 92 is fixed to the foundation 16 (projecting portion 74) as the second structure via the turntable 62.

  As shown in FIG. 8A, the center of the female screw 94 formed in the joint portion 90 is centered on the receiving plate 96 in a state where the cylinder 24 (joining portion 90) is placed on the receiving plate 96. A through hole 100 is formed so as to substantially match.

  Then, a bolt 102 as a joining means is passed through the through hole 100 from below the receiving plate 96, and then screwed into the female screw 94 and tightened. Thereby, the cylinder 24 can be fixed to the support member 92. Further, the cylinder 24 can be removed from the support member 92 by loosening and removing the tightened bolt 102. That is, the bolt 102 as a joining means joins the joining portion 90 to the support member 92 and releases the joining.

When connecting the cylinder 24 to the support member 92, first, the cylinder 24 is placed on the receiving plate 96.
Next, after a bolt 102 as a joining means is passed through the through hole 100 from below the receiving plate 96, it is screwed into the female screw 94 and tightened.

  In this way, the cylinder 24 is fixed to the support member 92. That is, the cylinder 24 is connected to the foundation 16 (projecting portion 74) as the second structure by the connecting mechanism 88 as the second connecting means.

  At this time, the shaft of the shaft member 78 is substantially vertical. That is, the connecting mechanism 88 as the second connecting means is configured so that the cylinder 24 is the base 16 (projecting portion 74) as the second structure so that the connecting mechanism 88 can rotate with respect to an axis (axis of the shaft member 78) orthogonal to the horizontal plane. ).

  Next, the operation and effect of the second embodiment of the present invention will be described.

  In the coupling mechanism 88 of the second embodiment, the piston rod 28 can be returned to the initial position in the state where the residual deformation has occurred in the basic seismic isolation layer 18 by the procedure described below.

  First, as shown in FIG. 8A, the end (rotating portion 46) of the piston rod 28 is connected to the connecting member 40 fixed to the protruding portion 48 of the upper building 12 (with respect to the upper building 12 and the foundation 16). In the state where the piston rod 28 is restrained from moving), the tightened bolt 102 is loosened and removed, and the joining of the joining portion 90 to the support member 92 is released.

  Next, the cylinder 24 is moved with respect to the support member 92 in the moving direction of the piston rod 28. Then, when the piston rod 28 is positioned at the initial position, the movement of the cylinder 24 is stopped.

  At this time, when the center of the female screw 94 formed in the joint portion 90 and the center of the through hole 100 formed in the receiving plate 96 do not coincide with each other, the support member 92 is moved in the moving direction of the piston rod 28. On the other hand, the cylinder 24 is moved and adjusted so that the center of the female screw 94 and the center of the through hole 100 coincide.

  Next, after a bolt 102 as a joining means is passed through the through hole 100 from below the receiving plate 96, it is screwed into a female screw 94 and tightened to join the joint 90 to the support member 92. As a result, the cylinder 24 is fixed to the support member 92.

In this way, the joining portion 90 can be joined and fixed to the support member 92 with the bolts 102 as joining means, or the joining can be released and the cylinder 24 can be moved relative to the support member 92. Position adjustment of the piston rod 28 with respect to the cylinder 24 can be easily performed.
Further, the cylinder 24 can be firmly fixed to the support member 92 by using the bolt 102 as the joining means.

  The second embodiment of the present invention has been described above.

  In the second embodiment, the bolt 102 is used as the joining means. However, the joining means is capable of joining the joining portion 90 to the support member 92 and releasing the joining. That's fine. For example, as shown in FIG. 9B, which is a side view of FIG. 9A and a FF arrow view of FIG. 9A, the joining means may be a pin member 104.

As shown in FIG. 9A, the connection mechanism 106 as the second connection means includes a joint portion 108, a support member 110, and a turntable 62.
The joint portion 108 is a block-like member that is fixed to the lower surface of the cylinder 24 and is provided over the entire axial length of the cylinder 24.

  A plurality of through holes 112 are formed substantially horizontally in the joint portion 108 at equal intervals over the moving direction of the piston rod 28. As shown in FIG. 9B, the through hole 112 is formed so as to penetrate from one side surface of the joint portion 108 to the other side surface.

  The support member 110 includes a receiving member 114 that supports the joint 108 and a columnar member 98 that supports the receiving member 114. A bearing 72 is provided below the cylindrical member 98 so that the rotation axis is substantially vertical, and a shaft member 78 having a substantially vertical axis is inserted into the bearing 72. Thereby, the support member 110 can rotate with respect to the shaft member 78 of the turntable 62. That is, the support member 110 is fixed to the foundation 16 (projecting portion 74) as the second structure via the turntable 62.

  The receiving member 114 is formed so as to surround the left and right side surfaces and the bottom surface of the joint portion 108, and as shown in FIG. 9B, the side wall portions 120 and 122 of the joint portion 108 have cylinders on the receiving member 114. The through holes 116 and 118 are formed so that the center of the through hole 112 formed in the joint portion 108 substantially coincides with the center in the state where 24 (the joint portion 108) is placed.

  Then, after the pin member 104 as the joining means is passed through from the side of the receiving member 114 in the order of the through holes 116, 112, 118, the nut 124 is screwed into the end portion of the pin member 104. The nut 124 is provided to prevent the pin member 104 from coming out of the through holes 116, 112, 118 when the oil damper 22 is used.

  In this way, the cylinder 24 can be fixed to the support member 110. Further, the cylinder 24 can be removed from the support member 110 by pulling out the pin member 104 that has passed through the through holes 116, 112, and 118. That is, the pin member 104 as a joining means joins the joining portion 108 to the support member 110 and releases this joining.

  Next, a third embodiment of the present invention will be described.

  In the third embodiment, the configuration of the coupling mechanism 38 of the first embodiment is different. Therefore, in the description of the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and are appropriately omitted.

  In the third embodiment, as shown in the side view of FIG. 10A and FIG. 10B, which is a view taken along the line H-H of FIG. 10A, along the horizontal plane due to the occurrence of an earthquake or the like. An oil damper 22 as a damper is provided in the base seismic isolation layer 18 between the relatively moving upper building 12 and the foundation 16.

The oil damper 22 includes a connection mechanism 36 (see FIG. 2A) as a first connection means and a connection mechanism 126 as a second connection means.
The connection mechanism 126 includes an annular member 128, a turntable 62, and a male screw 130. The annular member 128 is disposed around the cylinder 24. The male screw 130 is provided on the outer wall surface of the cylinder 24.

  A female screw 132 is provided on the inner wall surface of the annular member 128. The male screw 130 provided on the outer wall surface of the cylinder 24 is screwed into the female screw 132 provided on the inner wall surface of the annular member 128.

  A bearing 72 is provided at a lower portion of the annular member 128 so that the rotation shaft is substantially vertical, and a shaft member 78 having a substantially vertical shaft is inserted into the bearing 72. As a result, the annular member 128 can rotate with respect to the shaft member 78 of the turntable 62. That is, the annular member 128 is fixed to the foundation 16 (projecting portion 74) as the second structure via the turntable 62.

  Next, operations and effects of the third exemplary embodiment of the present invention will be described.

  In the coupling mechanism 126 according to the third embodiment, the piston rod 28 can be returned to the initial position in a state where residual deformation has occurred in the basic seismic isolation layer 18 by the procedure described below.

  First, as shown to Fig.10 (a), the edge part (rotating part 46) of the piston rod 28 was connected with the connection member 40 fixed to the protrusion part 48 of the upper building 12 (with respect to the upper building 12 and the foundation 16). The cylinder 24 is rotated with respect to the annular member 128 in a state where the piston rod 28 is restrained from moving. Accordingly, the cylinder 24 (male screw 130) is screwed into the annular member 128 (female screw 132), and the cylinder 24 is moved relative to the annular member 128 in the moving direction of the piston rod 28. In addition, the cylinder 24 may be rotated by human power, or may be rotated by a driving force of a motor installed by taking a reaction force on the foundation 16, for example.

  Next, when the piston rod is positioned at the initial position, the rotation of the cylinder 24 relative to the annular member 128 (movement of the cylinder 24 relative to the annular member 128) is stopped.

  Thus, by rotating the cylinder 24 with respect to the annular member 128, the cylinder 24 is moved in the moving direction of the piston rod 28 with respect to the annular member 128, thereby easily adjusting the position of the piston rod 28 with respect to the cylinder 24. Can be done.

  Further, since the cylinder 24 can be installed on the annular member 128 at an arbitrary position of the cylinder 24 in the moving direction of the piston rod 28, the degree of freedom of the cylinder installation position is high and the cylinder installation position can be finely adjusted.

  As shown in FIG. 10A, an annular stopper member 134 having an internal thread 132 provided on the inner wall surface is disposed before and after the annular member 128 in the moving direction of the piston rod 28 to move the piston rod 28. You may make it tighten | tighten toward the annular member 128 from the front and back both sides of the annular member 128 in a direction. In this way, the cylinder 24 can be reliably fixed to the annular member 128.

  Next, a fourth embodiment of the present invention will be described.

  In the fourth embodiment, the configuration of the coupling mechanism 38 of the first embodiment is different. Therefore, in the description of the fourth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals and are appropriately omitted.

In the fourth embodiment, as shown in FIG. 11B, which is a side view of FIG. 11A and a JJ arrow view of FIG. 11A, along the horizontal plane due to the occurrence of an earthquake or the like. An oil damper 22 as a damper is provided in the base seismic isolation layer 18 between the relatively moving upper building 12 and the foundation 16.
The oil damper 22 has a connecting mechanism 36 (see FIG. 2A) as a first connecting means and a connecting mechanism 136 as a second connecting means.
The coupling mechanism 136 includes an outer peripheral member 140, a frame member 138, and a turntable 62.

The outer peripheral member 140 has a configuration in which the upper outer peripheral member 60A and the lower outer peripheral member 60B shown in the first embodiment are arranged on the left and right. 11A and 11B, the upper outer circumferential member 60A is the left outer circumferential member 140A and the lower outer circumferential member 60B is the right outer circumferential member 140B, but the cylinder 24 is sandwiched and tightened by the left outer circumferential member 140A and the right outer circumferential member 140B. The structure is the same as that of the upper outer peripheral member 60A and the lower outer peripheral member 60B.
Rotating shafts 142A and 142B projecting substantially horizontally are fixed to the side surfaces of the left outer peripheral member 140A and the right outer peripheral member 140B.

  The frame member 138 has a configuration in which support frames 144 and 146 are provided substantially vertically on the left and right ends of the receiving plate 96 (see FIG. 8B) of the support member 92 shown in the second embodiment. ing. A bearing 72 is provided below the cylindrical member 98 so that the rotation axis is substantially vertical, and a shaft member 78 having a substantially vertical axis is inserted into the bearing 72. As a result, the frame member 138 can rotate with respect to the shaft member 78 of the turntable 62. That is, the frame member 138 is fixed to the foundation 16 (projecting portion 74) as the second structure via the turntable 62.

  Bearings 148 are provided on the upper portions of the support frames 144 and 146, and rotating shafts 142 </ b> A and 142 </ b> B are inserted into the bearings 148. Thereby, the cylinder 24 (the outer peripheral member 140) rotates with respect to the rotation shafts 142A and 142B. That is, the coupling mechanism 136 as the second coupling means is configured such that the cylinder 24 is the base 16 (second structure) so that the cylinder 24 can rotate with respect to an axis orthogonal to the moving direction of the piston rod 28 and parallel to the horizontal plane. It is connected to the protrusion 74).

  Next, operations and effects of the fourth exemplary embodiment of the present invention will be described.

  In the connection mechanism 136 according to the fourth embodiment, the end portion (rotating portion 46) of the piston rod 28 connected to the upper building 12 (projecting portion 48) as the first structure and the cylinder 24 are connected to each other. An eccentric moment is generated in the oil damper 22 by applying a force P acting on the piston rod 28 to the eccentric distance L between the connecting surface (the upper surface of the protruding portion 74) of the foundation 16 (the protruding portion 74) as a structure. However, the cylinder 24 can be rotated with respect to an axis (axis of the rotating shafts 142A and 142B) orthogonal to the moving direction of the piston rod 28 and parallel to the horizontal plane (rotating shafts 142A and 142B). 74), the eccentric moment is transmitted to the foundation 16 (protrusion 74) through the frame member 138, and a reaction force that balances the eccentric moment is applied to the foundation 16 (protrusion). 4) To occur.

  Thereby, the strength of the peripheral wall of the cylinder 24 does not have to be large enough to resist the eccentric moment (for example, the thickness of the peripheral wall of the cylinder 24 can be reduced). Further, due to the eccentric moment, the cylinder 24 is deformed (for example, the peripheral wall of the cylinder 24 is twisted and a gap is formed between the side surface of the piston 26 and the inner wall surface of the cylinder 24), and the oil damper 22 has a predetermined performance. It is possible to avoid the occurrence of malfunctions that can not be achieved.

  Heretofore, the fourth embodiment of the present invention has been described.

  In the fourth embodiment, the second connecting means can be rotated with respect to an axis perpendicular to the horizontal plane, and further can be rotated with respect to an axis perpendicular to the moving direction of the piston rod 28 and parallel to the horizontal plane. Although an example of the coupling mechanism 136 is shown, a mechanism that can rotate only about an axis orthogonal to the moving direction of the piston rod 28 and parallel to the horizontal plane may be used.

  The first to fourth embodiments of the present invention have been described above.

  In the first to fourth embodiments, the lower outer peripheral members 60 </ b> B and 84 </ b> B, the columnar member 98, and the mechanism 72 in which the shaft member 78 of the turntable 62 is inserted into the bearing 72 provided at the lower portion of the annular member 128 are used. Although an example has been shown in which the cylinder 24 is rotatable with respect to an axis orthogonal to the horizontal axis, any mechanism may be used as long as the cylinder 24 can rotate with respect to an axis orthogonal to the horizontal plane.

  For example, as shown in FIG. 12B, which is a side view of FIG. 12A and a view taken along the line KK of FIG. 12A, the frame member 150 fixed to the upper surface of the protruding portion 74 of the base 16. In addition, a connection mechanism 152 configured to support the outer peripheral member 60 so as to be rotatable with respect to an axis orthogonal to the horizontal plane may be used.

  In the coupling mechanism 152, the rotating shaft 142A is provided substantially vertically on the upper surface of the upper outer peripheral member 60A, and the rotating shaft 142B is provided substantially vertically on the lower surface of the lower outer peripheral member 60B. In addition, bearings 148 are provided above and below the frame member 150, and rotating shafts 142 </ b> A and 142 </ b> B are inserted into the bearings 148.

  Further, for example, the coupling mechanism 136 shown in FIGS. 11A and 11B and the rotation mechanism used in the coupling mechanism 152 shown in FIGS. 12A and 12B may be appropriately combined. For example, FIGS. 13A and 13B and FIGS. 14A and 14B may be used.

  As shown in FIG. 13B, which is a side view of FIG. 13A and an MM arrow view of FIG. 13A, the coupling mechanism 156 can rotate with respect to an axis orthogonal to the horizontal plane. Thus, the frame member 158 is supported on the frame member 150. Further, the outer peripheral member 140 is supported by the frame member 158 so as to be rotatable with respect to an axis orthogonal to the moving direction of the piston rod 28 and parallel to the horizontal plane.

  14B, which is a side view of FIG. 14A and an NN arrow view of FIG. 14A, the coupling mechanism 160 is orthogonal to the moving direction of the piston rod 28 and is horizontal. A frame member 158 is supported by support frames 144 and 146 fixed to the projecting portion 74 so as to be rotatable with respect to an axis parallel to the frame. Further, the outer peripheral member 60 is supported by the frame member 158 so as to be rotatable with respect to an axis orthogonal to the horizontal plane.

  Further, for example, as shown in FIG. 15, a hole 154 having a size capable of rotating the rotation shaft 142B is formed on the upper surface of the protruding portion 74 of the foundation 16, and a mechanism for inserting the rotation shaft 142B into the hole 154 may be adopted. . It is preferable that the gap between the hole 154 and the rotating shaft 142B is filled with the lubricant U.

In this case, when an eccentric moment is generated in the oil damper 22, as shown in FIG. 16, the cylinder 24 (lower outer peripheral member 60B) is slightly inclined, and the outer wall of the rotating shaft 142B hits the inner wall of the hole 154. 16 (protrusion 74).
It should be noted that a mechanism may be provided in which a bearing is provided in the hole 154 and the rotating shaft 142B is inserted into the bearing, and in this case, the rotation can be supported more reliably than in the case of only the hole 154.

  In the first to fourth embodiments, an oil damper 22 as a damper is provided between the upper building 12 as the first structure that relatively moves along the horizontal plane and the foundation 16 as the second structure. However, the first structure may be the base 16 and the second structure may be the upper building 12.

  The first to fourth embodiments can also be applied to a case where a damper is provided between the first structure and the second structure that move relative to each other along the vertical plane.

  In this case, the connection mechanism 36 serving as the first connection means shown in the first to fourth embodiments can be rotated with respect to an axis perpendicular to the vertical plane (the rotation portion). 46) may be connected to the first structure.

  Also, the coupling mechanisms 38 and 82 as the second coupling means shown in the first embodiment, the coupling mechanisms 88 and 106 as the second coupling means shown in the second embodiment, and the third embodiment. The connecting mechanism 126 as the second connecting means and the connecting mechanism 136 as the second connecting means shown in the fourth embodiment are arranged so that the cylinder 24 can be rotated with respect to an axis orthogonal to the vertical plane. What is necessary is just to connect with two structures.

  Further, the coupling mechanism 136 as the second coupling means shown in the fourth embodiment allows the cylinder 24 to rotate with respect to an axis orthogonal to the moving direction of the piston rod 28 and parallel to the vertical plane. What is necessary is just to connect with a 2nd structure.

  The side view of FIG. 17 shows an example in which the first embodiment is applied to the first structure 162 and the second structure 164 that move relative to each other along the vertical plane.

Further, in the fourth embodiment, the coupling mechanism 136 is illustrated in which the cylinder 24 is coupled to the second structure so as to be rotatable with respect to an axis orthogonal to the moving direction of the piston rod 28 and parallel to the horizontal plane. However, you may apply this mechanism which can rotate with respect to the axis | shaft orthogonal to the moving direction of the piston rod 28, and parallel to a horizontal surface to the 1st-3rd embodiment.
Further, the thickness of the peripheral wall of the cylinder 24 is increased without preventing the cylinder 24 from being deformed by an eccentric moment without being rotatable with respect to an axis orthogonal to the moving direction of the piston rod 28 and parallel to the horizontal plane. It may be.

  Moreover, although the example which used the oil damper 22 as a damper was shown in 1st-4th embodiment, a damper generate | occur | produces damping force by relative movement of a cylinder and the piston rod inserted in this cylinder. Any viscous damper using a viscous fluid may be used. Further, for example, the damper may be a damping piece or an MR damper. The damping piece means a viscous body damping device with an amplifying mechanism, and the MR damper means a variable damper using MR (Magneto-Rheological fluid) fluid.

  Moreover, although the example which provided the oil damper 22 in the basic seismic isolation layer 18 of the building 10 was shown in the 1st-4th embodiment, in the case where the oil damper 22 was provided in the intermediate seismic isolation layer of the building Can exhibit the same effect.

  The first to fourth embodiments of the present invention have been described above, but the present invention is not limited to such embodiments, and the first to fourth embodiments may be used in combination. Needless to say, the present invention can be implemented in various modes without departing from the gist of the present invention.

10 Building 12 Upper building (first structure)
16 Foundation (second structure)
18 Base isolation layer 22 Oil damper (damper)
24 Cylinder 28 Piston rod 36 Connection mechanism (first connection means)
38, 82, 88, 106, 126, 136, 152, 156, 160 Connection mechanism (second connection means)
60, 84, 140 Peripheral member 68 Bolt (tightening means)
70 Nut (tightening means)
80 ring (tightening means)
90 Joining portion 92 Support member 102 Bolt (joining means)
104 Pin member (joining means)
108 Joint 110 Support member 128 Annular member 130 Male screw 132 Female screw 162 First structure 164 Second structure

Claims (8)

In a damper that is provided between a first structure and a second structure that move relative to each other, and generates a damping force by movement of a piston rod inserted into the cylinder with respect to the cylinder,
First connection means for connecting an end of the piston rod to the first structure;
A second connecting means for connecting the cylinder to the second structure and capable of changing a position of the cylinder relative to the second structure in a moving direction of the piston rod;
I have a,
The second connecting means includes
An outer peripheral member fixed to the second structure and disposed around the cylinder;
Fastening means for fixing the cylinder to the outer peripheral member by tightening the cylinder with the outer peripheral member, releasing the tightening and changing the position of the cylinder with respect to the outer peripheral member;
Damper with. 2. The cylinder clamped by the outer peripheral member and fixed to the outer peripheral member slides relative to the outer peripheral member when a force acting on the cylinder exceeds a predetermined value due to movement of the piston rod. The listed damper. In a damper that is provided between a first structure and a second structure that move relative to each other, and generates a damping force by movement of a piston rod inserted into the cylinder with respect to the cylinder,
First connection means for connecting an end of the piston rod to the first structure;
A second connecting means for connecting the cylinder to the second structure and capable of changing a position of the cylinder relative to the second structure in a moving direction of the piston rod;
Have
The second connecting means includes
A joint provided in the cylinder;
A support member fixed to the second structure and supporting the joint;
A joining means for joining the joint part to the support member and releasing the joining;
Damper with. In a damper that is provided between a first structure and a second structure that move relative to each other, and generates a damping force by movement of a piston rod inserted into the cylinder with respect to the cylinder,
First connection means for connecting an end of the piston rod to the first structure;
A second connecting means for connecting the cylinder to the second structure and capable of changing a position of the cylinder relative to the second structure in a moving direction of the piston rod;
Have
The second connecting means includes
An annular member fixed to the second structure and disposed around the cylinder;
A male screw screwed into a female screw provided on the outer wall surface of the cylinder and provided on the inner wall surface of the annular member;
Damper with. The first structure and the second structure move relative to each other along a horizontal plane or a vertical plane,
The first connecting means connects the end of the piston rod to the first structure so as to be rotatable with respect to an axis orthogonal to the horizontal plane or the vertical plane,
The damper according to any one of claims 1 to 4, wherein the second connecting means connects the cylinder to the second structure so as to be rotatable with respect to an axis orthogonal to the horizontal plane or the vertical plane. . The first structure and the second structure move relative to each other along a horizontal plane or a vertical plane,
The said 2nd connection means has connected the said cylinder to the said 2nd structure rotatably with respect to the axis | shaft orthogonal to the moving direction of the said piston rod, and parallel to the said horizontal surface or the said vertical surface. The damper of any one of -4. The first structure and the second structure move relative to each other along a horizontal plane or a vertical plane,
The first connecting means connects the end of the piston rod to the first structure so as to be rotatable with respect to an axis orthogonal to the horizontal plane or the vertical plane,
The second connecting means includes the cylinder in the second structure, an axis orthogonal to the horizontal plane or the vertical plane, and an axis orthogonal to the moving direction of the piston rod and parallel to the horizontal plane or the vertical plane. The damper according to any one of claims 1 to 4, wherein the damper is rotatably connected to the damper. In the building which has a damper given in any 1 paragraph of Claims 1-7,
The damper is a building provided in a base isolation layer or an intermediate isolation layer.

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