JP3793498B2 - Hydraulic control system for buildings - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hydraulic control device for buildings.
[0002]
[Prior art]
Conventionally, hydraulic dampers have been used to reduce the shaking of buildings due to earthquakes and winds.
The hydraulic damper is provided with a piston in a cylinder, and the cylinder and the piston rod are fixed to a building. The cylinder is filled with hydraulic oil. When the building is shaken, the hydraulic oil in the cylinder is compressed by the movement of the piston, and a resistance force against an external force is generated to attenuate the vibration. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-54677
[Problems to be solved by the invention]
Recently, a piston rod protrudes from one side of the cylinder, and a single rod type hydraulic damper that urges the piston rod with a spring member to contact the building and damp the vibration of the building is used. Sometimes.
At this time, in order to maximize the vibration damping force, the tip of the piston rod must be brought into contact with the building.
[0005]
This invention is made in view of such a problem, The place made into the objective is to provide the hydraulic-type damping device for buildings in which the piston rod of a hydraulic damper contacts a building reliably. is there.
[0006]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a cylinder filled with hydraulic oil, a piston moving in the cylinder, one end provided on one side of the piston, and the other end externally via the cylinder. A piston rod provided so as to protrude; a contact member provided at an outer end of the piston rod; contacting a pressing surface; and movable so as to follow the pressing surface; the piston and the piston rod Or a spring that is provided between the piston and the cylinder and presses the piston rod against the pressing surface.
[0007]
In the present invention, the end of the piston rod that protrudes outside the cylinder and the contact member provided at the end contact the pressing surface, that is, the surface of the building, and move so as to follow the movement of the pressing surface.
Here, the contact member has a concave surface such as a spherical shape, and can move while in contact with the convex surface provided at the tip of the piston rod, and can follow the movement of the pressing surface while maintaining contact with the pressing surface. Conversely, the contact member may have a convex surface and move while contacting a concave surface provided at the tip of the piston rod.
Alternatively, the contact member may be attached to the piston rod with a play so as to move freely within a certain range.
[0008]
Further, the second invention is such that a cylinder filled with hydraulic oil, a piston moving in the cylinder, one end is provided on one side of the piston, and the other end protrudes outside through the cylinder. A provided piston rod; and a head provided at an outer end of the piston rod, contacting a pressing surface and slidable with respect to the pressing surface; and between the piston and the piston rod, or the piston And a spring that is provided between the cylinder and presses the piston rod against the pressing surface.
[0009]
Here, a bearing is provided on the pressing surface side of the head, or a solid lubricant such as molybdenum dioxide, Teflon (registered trademark), oil-containing metal, or oil may be applied.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail based on the drawings. FIG. 1 is a schematic configuration diagram of a hydraulic damper 1 used in a building hydraulic vibration control device according to the present embodiment.
[0011]
In the hydraulic damper 1 shown in FIG. 1, a piston 5 is movably provided in a cylindrical cylinder 3. A cylindrical piston rod 7 is provided on one side of the piston 5. The piston rod 7 protrudes outside through the cylinder 3. A header 14 is provided at the tip of the piston rod 7.
[0012]
A spring mounting member 4 is provided on the piston rod 7. A spring 2 is provided between the spring mounting member 4 and the surface of the cylinder 3 on the side from which the piston rod 7 projects. The header 14 and the contact member 10 at the end of the piston rod 7 constitute a spherical bearing mechanism. The spherical header 14 is in contact with a concave spherical surface provided on the contact member 10 and can move up, down, left and right within a predetermined range.
[0013]
When the spring mounting member 4 is pressed by the extension force of the spring 2, the spherical header 14 provided at the end of the piston rod 7 presses the contact member 10 against the pressing surface R. Here, the pressing surface R is a surface of a building such as a beam, a column, or a brace. A contact surface S1 with the pressing surface R of the contact member 10 is subjected to a baking treatment of a solid lubricating film such as molybdenum dioxide, and the contact member 10 keeps contact while following the vibration and inclination of the pressing surface R. It is what you want to do.
[0014]
The piston 5 divides the inside of the cylinder 3 into a first oil chamber (head side oil chamber) 9 and a second oil chamber (rod side oil chamber) 11. Here, the rod side is the side where the piston rod 7 is attached to the piston 5, and the head side is the side where the piston rod 7 is not attached to the piston 5. The cylinder 3, the piston 5, the piston rod 7, etc. are made of metal.
[0015]
The first oil chamber 9 and the second oil chamber 11 are filled with hydraulic oil.
Several flow paths are provided in the piston 5, and a relief valve 15, a check valve 17, and an orifice 19 are provided in the flow path.
[0016]
The check valve 17 opens when the hydraulic oil flows from the second oil chamber 11 to the first oil chamber 9 side, and allows the hydraulic oil to flow from the second oil chamber 11 to the first oil chamber 9 side. When the hydraulic oil tries to flow in the reverse direction, the hydraulic oil closes to prevent the hydraulic oil from flowing in the reverse direction. That is, the hydraulic oil flows only in the direction B in the figure through the check valve 17.
[0017]
The relief valve 15 opens when the pressure of the hydraulic oil in the first oil chamber 9 exceeds the relief load, and allows the hydraulic oil to flow from the first oil chamber 9 side to the second oil chamber 11 side. When the hydraulic oil flows from the first oil chamber 9 side to the second oil chamber 11 side and the pressure in the first oil chamber 9 becomes lower than the relief load described above, the relief valve 15 is closed and the hydraulic oil is The oil does not flow from the first oil chamber 9 side to the second oil chamber 11 side. Further, when the hydraulic oil is about to flow from the second oil chamber 11 side to the first oil chamber 9 side, the relief valve 15 is closed to prevent such flow.
[0018]
Accordingly, the relief valve 15 is opened only when the pressure of the hydraulic oil in the first oil chamber 9 exceeds the relief load, and the hydraulic oil flows in the direction C in the drawing.
[0019]
An accumulator 21 is provided on the second oil chamber 11 side of the cylinder 3. The accumulator 21 is connected to the second oil chamber 11.
The accumulator 21 absorbs a volume difference between the first oil chamber 9 and the second oil chamber 11 and a volume change due to the temperature of the hydraulic oil. That is, since the piston rod 7 exists in the second oil chamber 11, there is a volume difference between the first oil chamber 9 and the second oil chamber 11 corresponding to the piston rod 7.
[0020]
Next, the vibration control operation by the hydraulic damper 1 will be described with reference to FIGS. Assume that the building is shaken due to earthquake force applied to the building.
[0021]
In the state shown in FIG. 1, when an external force is applied due to an earthquake or the like and the piston 5 and the piston rod 7 try to move in the direction A in the drawing, the hydraulic oil in the second oil chamber 11 passes through the check valve 17 to the first oil chamber. Flows to the 9th side. At this time, the relief valve 15 is closed, and hydraulic oil does not flow from the second oil chamber 11 to the first oil chamber 9 via the relief valve 15. The piston rod 7 receives a force directed in the A direction by the spring 2.
[0022]
Therefore, as shown in FIG. 2, the piston 5 and the piston rod 7 move to the rod side. At this time, the hydraulic oil in the second oil chamber 11 flows to the first oil chamber 9 side via the check valve 17, so the hydraulic oil in the second oil chamber 11 is not compressed.
[0023]
From the state of FIG. 2, the direction of shaking is reversed, and as shown in FIG. 3, the piston 5 and the piston rod 7 try to move in the D direction. At this time, the check valve 17 is closed. Since the relief valve 15 is initially closed, when the piston 5 moves in the direction D, the hydraulic oil in the first oil chamber 9 is compressed.
[0024]
Since the hydraulic oil in the first oil chamber 9 is compressed, a reaction force due to the compression force of the hydraulic oil is applied to the piston 5, and this force acts in a direction to cancel the external force, so that the vibration is attenuated.
[0025]
When the speed at which the piston 5 further moves in the direction D increases, the pressure of the hydraulic oil in the first oil chamber 9 further increases, and the pressure of the hydraulic oil in the first oil chamber 9 exceeds the relief load. Opens and hydraulic oil flows from the first oil chamber 9 side to the second oil chamber 11 side.
[0026]
As described above, when the piston 5 moves in the direction D, the hydraulic oil in the first oil chamber 9 is compressed, so that a reactive force is applied to the piston 5 from the hydraulic oil, and this reactive force generates vibration due to external force, that is, seismic force. Work in the direction to counteract.
[0027]
That is, when the piston 5 and the piston rod 7 move in the direction D, the pressure of the hydraulic oil in the first oil chamber 9 is maintained at a constant value (relief load) determined by the relief valve 15, and the first oil The hydraulic oil in the chamber 9 is compressed, and a reaction force is applied to the piston 5 from the hydraulic oil.
[0028]
When the piston 5 moves to the position shown in FIG. 4, the moving direction of the piston 5 changes, and the piston 5 and the piston rod 7 move in the A direction. When the compressed portion of the hydraulic oil in the first oil chamber 9 is released, the check valve 17 opens, and the hydraulic oil flows from the second oil chamber 11 to the first oil chamber 9 side. Thereafter, the same operation is repeated.
[0029]
Thus, when the hydraulic damper 1 is attached to the building and an external force is applied due to an earthquake or the like, as shown in FIGS. 1 to 4, when the piston 5 moves in the direction A, the resistance force against the external force is Although not generated, as shown in FIG. 3, when the piston 5 and the piston rod 7 move in the direction D, the hydraulic oil in the first oil chamber 9 is compressed. Since the force works in the direction of canceling external forces such as earthquakes, the vibration is attenuated.
[0030]
As shown in FIG. 3, when the piston 5 moves in the D direction, the hydraulic oil in the first oil chamber 9 is compressed, but an orifice 19 or a pressure regulating valve is provided to remove the hydraulic oil from the first oil chamber 9. By flowing the working oil to the second oil chamber 11 side, it is possible to prevent the pressure of the working oil in the first oil chamber 9 from rising rapidly. Here, the pressure regulating valve refers to a valve that keeps the damping coefficient C constant for optimally reducing the response of the building.
[0031]
Next, an example in which the hydraulic damper 1 shown in FIGS. 1 to 4 is attached to a high-rise building will be described.
FIG. 5 shows a high-rise building 31 to which the hydraulic damper 1 is attached, and FIG. 6 is an enlarged view of a portion where the hydraulic damper 1 is attached to the high-rise building 31.
[0032]
The high-rise building 31 has a large number of beams 33, columns 35, and the like. As shown in FIG. 6, a column side fixing member 47a is provided on the column 35a and the beam 33b, and a column side fixing member 47b is provided on the column 35b and the beam 33b. Further, braces 37a and 37b are provided in the diagonally downward direction from the beam 33a. Bases 49a and 49b are installed at the ends 41a and 41b of the braces 37a and 37b, respectively.
[0033]
The cylinder portion of the hydraulic damper 1a is fixed to the base 49a, and the tip portion of the piston rod 7a of the hydraulic damper 1a, that is, the bearing mechanism portion shown in FIG. 1, contacts the column side fixing member 47a. At this time, the tip of the piston rod 7a comes into contact with the column-side fixing member 47a by the force by which the spring 2a of the hydraulic damper 1a presses the spring mounting member 4a. That is, in the hydraulic damper 1a, the tip of the rod 7 is fixed to the column-side fixing member 47 by using a spring having an appropriate spring constant for the spring 2a or by appropriately adjusting the expansion / contraction force of the spring 2a. So that it can be easily attached to the base 49a of the brace 37a.
[0034]
Similarly, the cylinder portion of the hydraulic damper 1b is fixed to the base 49b, and the tip of the piston rod 7b of the hydraulic damper 1b is in contact with the column side fixing member 47b. At this time, the tip of the piston rod 7b comes into contact with the column-side fixing member 47b by the force by which the spring 2b of the hydraulic damper 1b presses the spring mounting member 4b. That is, the hydraulic damper 1b is easily attached to the base 49b of the brace 37b by using a spring having an appropriate spring constant for the spring 2b or by appropriately adjusting the expansion / contraction force of the spring 2b. Can do.
[0035]
Here, when a seismic force or the like is applied to the high-rise building 31, the beam 33, the column 35, and the braces 37a and 37b also vibrate, but the piston 2a keeps contact with the column-side fixing member 47a by the action of the spring 2a. is doing. Similarly, the piston rod 7b maintains contact with the column-side fixing member 47b by the action of the spring 2b.
[0036]
When the high-rise building 31 moves in the A direction, a resistance force by the hydraulic damper 1b is applied to the brace 37b. When the high-rise building 31 moves in the D direction, a resistance force by the hydraulic damper 1a is applied to the brace 37a. The vibration of the high-rise building 31 is reduced.
[0037]
The piston rods 7a and 7b preferably follow the earthquake deformation of the building. Therefore, the spring constants of the springs 2a and 2b are set such that the piston rods 7a and 7b follow the response of the building such as the high-rise building 31. At this time, the header 14 and the contact member 10 are provided so that the piston rods 7a and 7b are not separated from the column-side fixing members 47a and 47b.
[0038]
FIG. 7 shows an enlarged view of the header 14 portion of the hydraulic damper 1 when the pressing surface R is inclined due to the seismic force. The pressing surface R is, for example, the surface of the column side fixing member 47 shown in FIG. As shown in FIG. 7, the header 14 is pressed by a force that presses the attachment member 4 of the spring 2, and presses the contact member 10 against the pressing surface R. At this time, while the contact surface S1 of the contact member 10 maintains contact with the pressing surface R, the contact member 10 moves following the inclination (vibration) of the pressing surface R with the header 14 as an axis.
[0039]
FIG. 8 is a view of the contact member 10 and the header 14 as viewed from the direction F shown in FIG. The origin O is the center of the spherical header 14. The contact member 10 has a motion of at least two degrees of freedom, with the header 14 as an axis, rotating within a predetermined range with respect to the X axis, and rotating within a predetermined range with respect to the Y axis.
[0040]
Next, a hydraulic damper 51 according to the second embodiment will be described. FIG. 9 shows a hydraulic damper 51. The same components as those of the hydraulic damper 1 shown in FIG. In the hydraulic damper 51, the flow paths 53 and 55 are constituted by pipes or the like outside the cylinder 3, the relief valve 15 a is provided in the flow path 53, and the check valve 17 a is provided in the flow path 55. The flow paths 53 and 55 connect the first oil chamber 9 and the second oil chamber 11.
[0041]
In this manner, the relief valve 15a and the check valve 17a may be configured not to be provided in the piston 5. Furthermore, the orifice 19 is not provided in the piston 5, but a flow path can be provided outside the cylinder 3, and the flow path can be used as an orifice.
[0042]
Next, a hydraulic damper 81 according to a third embodiment will be described. FIG. 10 is a view showing the hydraulic damper 81. The operation of the hydraulic damper 81 is the same as that of the hydraulic damper 1 shown in FIG. 1 except that the installation position of the spring 13 is different. If this hydraulic damper 81 is installed in a high-rise building like the hydraulic damper 1, the same vibration control effect can be obtained.
[0043]
When the hydraulic damper 81 is installed in the high-rise building 31 shown in FIGS. 5 and 6, the cylinder 3 is fixed to the beam or column of the high-rise building and the tip of the piston rod 7 is installed so as to contact the brace 37. To do.
[0044]
Next, a fourth embodiment will be described. FIG. 11 is a view showing a bearing mechanism according to the fourth embodiment. In addition, in the component shown in FIG. 11, the same number is attached | subjected to the same component as the hydraulic damper 1 shown in FIG.
[0045]
The bearing mechanism shown in FIG. 11 includes a contact member 70, a mounting member 73, a spherical member 74, a presser plate 75, and the like. The contact member 70 and the spherical member 74 are coupled with a bolt or the like. The mounting member 73 has a spherical recess and is installed on the piston rod 7 and the spring mounting member 4.
[0046]
A spherical member 74 is installed in the spherical concave portion of the mounting member 73 and is pressed by the pressing plate 75. When viewed from the F direction illustrated in FIG. 11, the contact member 70 and the spherical member 74 rotate within a predetermined range with respect to the X axis and have a predetermined range with respect to the Y axis, similarly to the contact member 10 illustrated in FIG. 8. It has at least two degrees of freedom to rotate in the range.
[0047]
The contact member 70 and the spherical member 74 are pressed by the spring 2, and the contact surface S2 of the contact member 70 is in contact with the pressing surface R. Since the contact member 70 has a degree of freedom, it moves following the inclination (vibration) of the pressing surface R while maintaining contact with the pressing surface R. Note that the contact surface S2 is baked with a solid lubricant film such as molybdenum dioxide, and is processed so as to easily follow the movement of the pressing surface R.
[0048]
Next, a fifth embodiment will be described. FIG. 12 is a view showing a bearing mechanism according to the fifth embodiment. In addition, in the component shown in FIG. 12, the same number is attached | subjected to the same component as the hydraulic damper 1 shown in FIG.
[0049]
The bearing mechanism shown in FIG. 12 includes a contact member 80, a mounting member 83, a bolt 87, and the like. The attachment member 83 has a concave curved surface and is installed on the piston rod 7 and the spring attachment member 4. The contact member 80 has a convex curved surface, and is attached to the attachment member 83 by a bolt 87 so that the convex curved surface contacts the concave curved surface of the attachment member 83.
[0050]
At this time, the bolt hole of the bolt 87 has a diameter slightly larger than the diameter of the bolt 87, and the bolt 87 is attached so as to be able to play. Thus, like the contact member 10 shown in FIG. 8, the contact member 80 has a motion of at least two degrees of freedom such as rotating within a predetermined range with respect to the X axis and rotating within a predetermined range with respect to the Y axis. .
[0051]
The attachment member 83 and the contact member 80 are pressed by the spring 2, and the contact surface S 3 of the contact member 80 is in contact with the pressing surface R. Since the contact member 80 has a degree of freedom, it moves following the inclination (vibration) of the pressing surface R while maintaining contact with the pressing surface R. Note that the contact surface S3 is subjected to a baking process of a solid lubricant film such as molybdenum dioxide, and is processed so as to easily follow the movement of the pressing surface R.
[0052]
In the embodiment of the present application, an oil-impregnated metal, Teflon (registered trademark), or the like may be used for the contact surfaces S1, S2, and S3, or oil or the like may be applied.
[0053]
Next, a sixth embodiment will be described. FIG. 13 is a view showing a hydraulic damper 91 according to the sixth embodiment. In addition, in the component shown in FIG. 13, the same number is attached | subjected to the same component as the hydraulic damper 1 shown in FIG.
[0054]
A head 113 is provided at the tip of the piston rod 7. A bearing 111 is provided on the surface of the head 113 that contacts the pressing surface R. A spring 2 is provided between the cylinder 3 and the spring mounting member 4. When the spring mounting member 4 is pushed by the extension force of the spring 2, the spherical head 113 provided at the end of the piston rod 7 is pushed against the pressing surface R.
[0055]
Here, the bearing 113 provided on the head 113 allows the head 113 to maintain contact while following the vibration and inclination of the pressing surface R.
[0056]
FIG. 14 is a diagram showing a head 123 according to the seventh embodiment. For example, even if the head 123 is provided at the tip of the piston rod 7 of the hydraulic damper 91 shown in FIG. 13 and Teflon (registered trademark) 121 is applied to the contact surface with the pressing surface R, the head 123 remains on the pressing surface R. The effect of contacting and following the movement is obtained.
[0057]
Instead of Teflon (registered trademark) 121, a solid lubricant such as oil-impregnated metal or molybdenum dioxide may be used, or oil or the like may be applied to the surface.
[0058]
Note that the bearing mechanism or the head mechanism described as the fourth to seventh embodiments can be applied to the hydraulic damper 51 shown in FIG. 9 and the hydraulic damper 81 shown in FIG. There are similar effects.
[0059]
In addition, the technical application range of this invention is not restricted to the installation method of the hydraulic damper shown to FIG. 5, FIG. 6, You may attach not only a high-rise building but the interlayer of a building, or between buildings.
[0060]
【The invention's effect】
As described above in detail, according to the present invention, the piston rod of the hydraulic damper can be reliably brought into contact with the building.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a hydraulic damper 1. FIG. 2 is a diagram showing an operation of the hydraulic damper 1. FIG. 3 is a diagram showing an operation of the hydraulic damper 1. FIG. FIG. 5 is a schematic configuration diagram of a high-rise building 31. FIG. 6 is an enlarged view of a mounting portion of a hydraulic damper. FIG. 7 is an enlarged view of a contact member 10 and a header 14. FIG. FIG. 9 is a schematic configuration diagram of a hydraulic damper 51. FIG. 10 is a schematic configuration diagram of a hydraulic damper 81. FIG. 11 is an enlarged view of a bearing mechanism portion. FIG. 12 is an enlarged view of a bearing mechanism portion. Schematic configuration diagram of the type damper 91 [FIG. 14] A diagram showing the head 123 [Explanation of symbols]
1, 51, 81, 91 ... Hydraulic damper 2 ... Spring 3 ... Cylinder 5 ... Piston 7 ... Piston rod 9 ... First oil chamber 10 ... Contact member 11 ... ... Second oil chamber 14 ......... Header 15 ......... Relief valve 17 ......... Check valve 19 ......... Orifice 21 ......... Accumulator 31 ......... High-rise building 33 ......... Beam 35 ......... Column 37 ... ...... Brace

Claims (10)

A cylinder filled with hydraulic oil;
A piston moving in the cylinder;
A piston rod having one end provided on one side of the piston and the other end protruding outside through the cylinder;
A contact member that is provided at an outer end of the piston rod, contacts the pressing surface, and is movable so as to follow the pressing surface;
A spring provided between the piston and the piston rod, or between the piston and the cylinder, and pressing the piston rod against the pressing surface;
A hydraulic seismic control device for buildings, comprising:   2. The hydraulic control device for a building according to claim 1, wherein the end of the piston rod and the contact member constitute a spherical joint.   3. The hydraulic control device for a building according to claim 2, wherein the contact member has a concave surface and moves while contacting a convex surface provided at an end of the piston rod.   3. The hydraulic control device for a building according to claim 2, wherein the contact member has a convex surface and moves while being in contact with a concave surface provided at an end of the piston rod.   The building-type hydraulic vibration control device according to claim 1, wherein the contact member is slidable with respect to the pressing surface.   The hydraulic vibration control device for a building according to claim 5, wherein a bearing is provided on the pressing surface side of the contact member.   6. The hydraulic vibration control device for a building according to claim 5, wherein a solid lubricant is applied to the pressing surface side of the contact member. A cylinder filled with hydraulic oil;
A piston moving in the cylinder;
A piston rod having one end provided on one side of the piston and the other end protruding outside through the cylinder;
A head provided at an outer end of the piston rod, in contact with the pressing surface, and slidable with respect to the pressing surface;
A spring provided between the piston and the piston rod, or between the piston and the cylinder, and pressing the piston rod against the pressing surface;
A hydraulic seismic control device for buildings, comprising:   9. The hydraulic control device for a building according to claim 8, wherein a bearing is provided on the pressing surface side of the head.   The hydraulic vibration control device for a building according to claim 8, wherein a solid lubricant is applied to the pressing surface side of the head.

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