TWI386565B - Vibration absorption device - Google Patents

Description

Vibration energy absorbing device

The present invention relates to a vibration energy absorbing device and a structure including the same, which are used for the early generation of vibrations in structures such as high-rise apartments, office buildings, single-family houses, bridges, and the like. Attenuation is utilized to absorb the vibrational energy of the vibration energy absorbing device.

As for such a vibration energy absorbing device (damper), a viscous damper, a friction damper, a lead damper, a steel rod damper, etc., which are suitable for returning the structure to the initial state, are known. The structure of the position is, for example, a spring device.

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-287079

[Non-Patent Document 1] Nakata, Kasumi, Fifty Fathoms, "Simulated Negative Stiffness Additional Type Semi-Active Vibration Control Experiment of Solid Large-Linked Structures", Proceedings of the 56th Annual Academic Lecture of the Society of Civil Engineers, Society of Civil Engineers, Heisei 13, October, p162-163 [Non-Patent Document 2] Jia Yong, Fifty Fathoms, Suzuki, "Real-time hybrid experiment on MR damper (magnetorheological damper) applied to simulate semi-active control of negative stiffness", Japan Earthquake Engineering Society, General Assembly - 2003 Synopsis, p268-269

When a vibration energy absorbing device such as a viscous damper or a friction damper with a spring device is applied to the structure, for example, when applied to a vibration-isolated structure, due to the restoring force of the spring device during the vibration process The resistance of the vibration energy absorbing device also exerts a load on the structure, so that the structure is subjected to a strong force, so it is necessary to increase the rigidity of the force receiving portion which is subjected to the resistance of the vibration energy absorbing device and the restoring force of the spring device.

The present invention has been made in view of the above points, and an object thereof is to provide a vibration energy absorbing apparatus and a structure including the same, which can absorb rigidity of a structure and a force of a restoring force of a restoring mechanism Not very big.

The vibration energy absorbing device of the present invention comprises: a reciprocating member that reciprocally reciprocates at a maximum displacement position that is positive and negative with respect to an origin position; and a damping force generating mechanism that generates a damping force for reciprocating movement of the reciprocating member; a control mechanism that controls the damping force generating mechanism to cause the damping force generating mechanism to generate a damping force in the reciprocating movement of the reciprocating member, in terms of each movement from the positive and negative maximum displacement position to the origin position, On the one hand, the non-damping force generating mechanism substantially generates the damping force in terms of the respective movements from the origin position to the positive and negative maximum displacement positions after the movement.

According to the vibration energy absorbing apparatus of the present invention, the damping mechanism generates the damping force in the reciprocating movement of the reciprocating member in the reciprocating movement of the reciprocating member, and the damping force generating mechanism generates the damping force in the movement from the positive and negative maximum displacement position to the origin position. On the other hand, in the movement from the origin position to the maximum displacement position after the movement, the damping force generating mechanism does not substantially generate the damping force, and therefore the reciprocating movement is performed for the vibration damping of the structure. The member is coupled to the structure and the present vibration energy absorbing device is disposed on the structure. When the structure vibrates due to an earthquake or the like, the movement from the origin position to the positive and negative maximum displacement positions is not connected to the structure. The portion having the reciprocating member generates a force caused by the vibration damping force of the vibration energy absorbing device, so that the portion does not have to have a strong rigidity, and when the structure vibrates due to an earthquake or the like, the position is from the positive and negative maximum displacement position to the origin. In terms of various movements of the position, the restoring force of the origin recovery device and the damping force of the vibration energy absorbing device are mutually offset, Also do not have the connecting structures of the isolated portion of the reciprocating member it has a strong rigidity.

The positive and negative maximum displacement positions of the reciprocating member of the present invention vary depending on the magnitude of the vibration of the structure, become larger when the structure vibrates greatly, and conversely become smaller as the vibration of the structure becomes smaller, and become smaller as the vibration of the structure is attenuated.

The control mechanism of the present invention can control the damping force generating mechanism to facilitate the reciprocating movement of the reciprocating member to cause the damping force generating mechanism to generate a non-zero amount in each movement from the positive and negative maximum displacement position to the origin position. The damping force, but instead of this, the damping force generating mechanism can also be controlled to facilitate the generation of the damping force generating mechanism in the reciprocating movement of the reciprocating member in terms of the movement from the positive and negative maximum displacement position to the origin position. Gradually reduce the damping force.

In the case of the damping force generating mechanism, it is possible to use viscous resistance, viscoelastic resistance, frictional resistance, elastoplastic resistance, or the like.

The control mechanism of the present invention may also be constructed using a control valve that controls the communication of the orifice passage, the one-way valve, and the fluid circuit formed by the orifice passage and the one-way valve.

In a preferred embodiment of the present invention, the reciprocating member includes a piston and a piston rod coupled to the piston; the damping force generating mechanism includes: a pressure cylinder that reciprocally accommodates the piston and the piston rod penetrates; and the control orifice valve , which is connected to a chamber partitioned by the piston in the cylinder by one side, and communicates with the other chamber in the cylinder that is partitioned by the piston by the other side; and the fluid contained in the cylinder; The control mechanism controls the control orifice valve according to the reciprocating movement of the piston, so that in the reciprocating movement of the piston, the damping force is generated by controlling the passage of the fluid of the orifice valve in terms of the movement from the positive and negative maximum displacement position to the origin position. On the other hand, in the movement from the origin position to the positive and negative maximum displacement positions after the movement, the damping force is not substantially generated by controlling the passage of the fluid of the orifice valve. At this time, the control mechanism includes the detection. A detecting mechanism for reciprocating movement of the piston, and using the detecting mechanism to control the orifice valve.

When the reciprocating movement of the piston is detected, the detecting mechanism can detect the reciprocating movement of the piston itself, but instead of this, the reciprocating movement of the piston rod or the vibration of the structure connecting the piston rod can be detected.

The fluid is preferably a ruthenium fluid, and may be another fluid such as a liquid other than a lanthanum.

The structure of the present invention is coupled to the vibration energy absorbing device of any of the above aspects by receiving the vibration of the structure by the reciprocating member. Here, the structure can be isolated by laminating rubber, sliding members, roller members, and the like. In this case, the structure is coupled to the recovery mechanism that restores the structure to the initial position after the vibration, and the recovery mechanism preferably includes an elastic device between the structure and the ground on which the structure is disposed, and is elastic. The apparatus may also include at least one of a laminated rubber bearing and a coil spring.

The present invention can provide a vibration energy absorbing apparatus and a structure including the same, which can make the rigidity of the structure subjected to the restoring force of the structure and the restoring mechanism to be not particularly large.

Next, the present invention and its embodiments will be described in more detail based on preferred embodiments shown in the drawings. Furthermore, the present invention does not have any limitation in these examples.

[Examples]

In Fig. 1, the vibration energy absorbing apparatus 1 of the present embodiment includes a reciprocating member 2 that reciprocally reciprocates in the H direction with respect to the origin position O (shown in Figs. 1, 4, and 6). a positive and negative maximum displacement position D±max (shown in FIGS. 3 and 5); a damping force generating mechanism 3 that generates a damping force R for reciprocating movement of the reciprocating member 2 in the H direction; and a control mechanism 4 And controlling the damping force generating mechanism 3 to reciprocate the reciprocating member 2 in the H direction, on the one hand, at each position from the positive and negative maximum displacement position D±max to the origin position O in the H direction During the movement, the damping force generating mechanism 3 generates a fixed damping force R, and on the other hand, after moving in the H direction, in the H direction from the origin position O to the positive and negative maximum displacement position D During the movement of each position of ±max, the damping force generating mechanism 3 does not substantially generate the damping force R, that is, substantially generates the zero damping force R.

The reciprocating member 2 includes a piston 5, a piston rod 6 fixed to the piston 5, and a mounting portion 7 fixed to one end of the piston rod 6.

The damping force generating mechanism 3 includes a cylinder 10 that reciprocally accommodates the piston 5 in the H direction and penetrates the piston rod 6; and controls the orifice valve 15 by the one weir 12 and the cylinder 10 The inner chamber 11 which is partitioned by the piston 5 communicates with each other, and communicates with the other chamber 13 in the cylinder 10 which is partitioned by the piston 5 by the other side 14; and the fluid contained in the pressure cylinder 10, for example, the eucalyptus oil 16 .

The control orifice valve 15 has an orifice passage in which the flow of the oil 16 supplied from the crucible 12 to the crucible 14 or from the crucible 14 and flowing to the crucible 14 is controlled and the diameter is controlled as the crucible oil 16 flows through the orifice passage The flow resistance generates a damping force R.

The control unit 4 includes a detecting unit 21 that detects the reciprocating movement of the piston 5 in the H direction, and a control unit 22 that includes a microcomputer or the like, and controls the diameter of the orifice passage of the control orifice valve 15 based on the detection result from the detecting unit 21.

The detecting mechanism 21 includes three detectors 23, 24, and 25, which respectively detect the positions of the pistons 5 and are arranged side by side in the H direction; the detector 23 is disposed at a substantially central position of the cylinder 10 in the H direction; 24 is disposed in the H direction at a substantially maximum movable position of the piston 5 in the H1 direction; the detector 25 is disposed in the H direction in the opposite direction of the piston 5 in the H1 direction, that is, the maximum movable position in the H2 direction; For the detectors 23, 24, and 25, a non-contact sensor such as a magnetic sensor can be used.

The control unit 22 performs processing such as addition, subtraction, differentiation, integration, and the like on the detection results of the detectors 23, 24, and 25 from the detecting unit 21 to determine whether the piston 5 reaches the positive and negative maximum displacement position D±max and the origin position O, and The direction of movement of the piston 5.

The control mechanism 4 controls the orifice valve 15 in accordance with the detection result from the detecting mechanism 21 in accordance with the reciprocating movement of the piston 5 in the H direction. On the one hand, the piston 5 is reciprocated in the H direction. In the movement from the positive and negative maximum displacement position D±max to the position of the origin position O, a specific damping force R is generated due to the passage of the oil 16 in the orifice passage of the control orifice valve 15, on the other hand, After such movement, in the movement from the origin position O to the respective positions of the positive and negative maximum displacement position D±max, the damping force is not substantially generated by the passage of the squeegee 16 in the orifice passage of the control orifice valve 15. R.

As shown in FIG. 2, the above-described vibration energy absorbing apparatus 1 is used in such a manner that, in order to move the structure 33 in the H direction (horizontal direction) with respect to the floor 31 containing the ground, the roller 32 is rotatably provided. On the other hand, the structure 33 is placed on the floor 31 to isolate the piston rod 6 from the structure 33 via the mounting portion 7, so that the vibration energy absorbing device is vibrated in the H direction by the structure 33. On the other hand, the cylinder 10 is fixed to the floor 31.

The recovery mechanism for returning the structure 33 to the initial position is provided with an elastic means including a coil spring 35 interposed between the structure 33 and the floor 31 provided with the structure 33, and a coil spring 35 having a spring constant of K When the structure 33 is caused to vibrate in the H direction, expansion and contraction occurs. When the earthquake is completed, the structure 33 is restored to the initial position before the vibration (corresponding to the origin position O) by the restoring force (elastic force). The piston rod 6 of the reciprocating member 2 is coupled to the side of the structure 33 via the mounting portion 7, and when the structure 33 does not vibrate, or the structure 33 is returned to the initial position by the coil spring 35 and is stationary. As shown in FIG. 1, the piston 5 is located at substantially the center of the cylinder 10 in the H direction, that is, at the origin position O.

In this state, the control unit 22 receives the detection result from the detecting means 21 indicating that the piston 5 is at the origin position O (D = 0), and controls the control orifice valve 15 in such a manner as to control the orifice valve 15 The diameter of the orifice passage is the largest, in other words, even if the oil 16 flows in the orifice passage of the control orifice valve 15, the damping force R (R = 0) is not substantially generated. For example, when the structure 33 vibrates in the H direction due to an earthquake, and the piston 5 is moved in the H1 direction by the piston rod 6 first in the H direction shown, for example, in FIG. 3, the oil 16 on the chamber 11 side passes through the control orifice. The orifice passage of the valve 15 flows to the chamber 13 side, however, the positive maximum displacement position (D=D+max) from the substantially central position (origin position O, D=0) to the H1 direction of the piston 5 in the H1 direction. In the movement, the damping force generating mechanism 3 generates a zero reaction force (resistance) R shown by a straight line 41 in Fig. 7, and supplies it to the piston rod 6, which is controlled by the orifice valve 15 It is produced as the largest diameter orifice channel.

Further, as shown in FIG. 3, after the piston 5 is moved to the positive maximum displacement position (D=D+max) in the H1 direction, if the piston 5 starts moving in the H direction in the direction opposite to the H1 direction in the H direction, the acceptance is from When the control unit 22 of the detection result of the detecting means 21 determines that the piston 5 has reached the positive maximum displacement position (D = D + max) in the H1 direction, it has moved in the H direction in the H direction opposite to the H1 direction, and immediately follows the following. Mode Control Control Nozzle Valve 15: Reduces the diameter of the orifice passage of the control orifice valve 15 to cause a fixed damping force R when the oil 16 flows over the orifice passage of the control orifice valve 15. When the piston 5 moves in the H2 direction in this state, the sputum oil 16 on the chamber 13 side flows to the chamber 11 side via the orifice passage of the control orifice valve 15, and thus the piston 5 is displaced from the positive to the maximum displacement position in the H2 direction. During the movement of (D=D+max) to the substantially central position (original position O, D=0) in the H2 direction, the damping force generating mechanism 3 generates a fixed reaction force (resistance) R as shown by the curve 42 of FIG. This is supplied to the piston rod 6, and the above-described reaction force (resistance) R is generated by the orifice passage which is controlled by the orifice valve 15.

Further, as shown in FIG. 3, after the piston 5 is moved from the positive maximum displacement position (D=D+max) to the H2 direction, as shown in FIG. 4, when the piston 5 reaches the approximate center position (origin position O, D=0) Then, the control unit 22 that receives the detection result from the detecting mechanism 21 judges that the piston 5 has reached the approximate center position (D=0), and immediately controls the control orifice valve 15 in such a manner as to control the orifice passage of the orifice valve 15. The diameter is the largest, in other words, even if the squeegee 16 flows in the orifice passage of the control orifice valve 15, the damping force R (R = 0) is not substantially generated.

When the piston 5 continues to move in the H2 direction from the substantially central position (D=0) of the cylinder 10, the piston 5 moves in the H2 direction from the substantially central position (D=0) in the H2 direction, and the damping force generating mechanism 3 generates a zero reaction force (resistance) R shown by a straight line 43 of Fig. 7, and supplies it to the piston rod 6, which is the orifice passage that controls the orifice valve 15 to become the largest diameter. And produced.

When the piston 5 moves from the substantially central position (D=0) to the H2 direction as shown in FIG. 4, as shown in FIG. 5, when the piston 5 reaches the negative maximum displacement position (D=-max) in the H2 direction, When the piston 5 starts moving again in the H1 direction opposite to the H2 direction in the H direction, the control unit 22 that receives the detection result from the detecting mechanism 21 determines that the piston 5 reaches the negative maximum displacement position in the H2 direction (D=D- After max), the movement in the H direction is opposite to the direction opposite to the H2 direction, that is, the H1 direction, and the control orifice valve 15 is immediately controlled in the following manner: the diameter of the orifice passage of the control orifice valve 15 is reduced, so that the oil 16 is When the flow in the orifice passage of the orifice valve 15 is controlled, a fixed damping force R is generated. When the piston 5 moves in the H1 direction in this state, the oil 16 on the chamber 11 side flows to the chamber 13 side via the orifice passage of the control orifice valve 15, and thus the piston 5 is at the maximum displacement position in the H1 direction ( In the movement of D=D-max) to the substantially central position (origin position O, D = 0) in the H1 direction, the damping force generating mechanism 3 generates a fixed reaction force (resistance) R shown by a curve 44 of Fig. 7. And supplying it to the piston rod 6, the above-mentioned reaction force (resistance) R is generated by the orifice passage which is controlled by the orifice valve 15 being reduced.

Further, after the piston 5 is moved in the H1 direction at the self-negative maximum displacement position (D=D-max) as shown in Fig. 5, as shown in Fig. 6, when the piston 5 reaches the approximate center position (origin position O, D = 0) At this time, the control unit 22 that receives the detection result from the detecting mechanism 21 judges that the piston 5 has reached the approximate center position (D = 0), and immediately controls the control orifice valve 15 in such a manner as to control the orifice passage of the orifice valve 15. The diameter is the largest, in other words, even if the squeegee 16 flows in the orifice passage of the control orifice valve 15, the damping force R (R = 0) is not substantially generated, however, the piston 5 is substantially central from the H1 direction. In the movement of the (original position O, D = 0) to the positive maximum displacement position (D = D + max) in the H1 direction, the damping force generating mechanism 3 again generates the zero reaction force (resistance) indicated by the straight line 41 of Fig. 7. R and supply it to the piston rod 6.

Hereinafter, after the piston 5 is again moved to the positive maximum displacement position (D=+max) in the H1 direction, the piston 5 repeats the above operation in the vibration limited to the H2 direction and the H1 direction, and the vibration energy absorbing device 1 will be the line 41 of FIG. The damping force R (reaction force R) formed by the damper rings shown by the curve 42, the straight line 43, and the curve 44 is supplied to the piston rod 6, and the vibration of the structure 33 caused by the earthquake in the H direction is attenuated. Then, in the vibration energy absorbing apparatus 1, the amplitude and speed of the vibration of the structure 33 in the H direction are reduced by the earthquake, and the damper rings shown by the straight line 41, the curve 42, the straight line 43, and the curve 44 become smaller. The damping effect exhibited by the damper ring is supplied to the vibration of the structure 33 caused by the earthquake in the H direction, whereby the structure 33 can be restored by the restoring force of the coil spring 35 once the vibration of the structure 33 subsides. To the initial position.

During the vibration of the structure 33, at each position D in the H direction through which the piston 5 is moved, the restoring force R and the vibration of the coil spring 35 indicated by the restoring force line 45 in Fig. 7 are applied to the structure 33. The damping force R (reaction force R) of the device 1 can be absorbed, but since the vibration energy absorbing device 1 has a so-called negative stiffness for the displacement of the structure 33 at the position D, the vibration energy absorbed by the structure 33 can be absorbed. The combined force of the damping force R of the device 1 and the restoring force R of the coil spring is small, so the rigidity of the structure 33 subjected to such resultant forces need not be particularly large.

That is, according to the vibration energy absorbing apparatus 1, the reciprocating movement of the reciprocating member 2 in the H direction by the control mechanism 4, on the one hand, the movement from the positive and negative maximum displacement position D±max to the position of the origin position O In the middle, the damping force generating mechanism 3 generates a fixed damping force, and on the other hand, after the movement, the vibration is reduced in the movement from the origin position O to the positive and negative maximum displacement positions D±max. Since the force generating mechanism 3 does not substantially generate the damping force, in order to achieve the earthquake resistance of the structure 33, even if the reciprocating member 2 is coupled to the structure 33, and the vibration energy absorbing device 1 is placed on the structure 33, When the structure 33 vibrates due to an earthquake or the like, the vibration energy is not generated in the portion where the reciprocating member 2 is connected to the structure 33 in the movement from the origin position O to the position of the positive/negative maximum displacement position D±max. Absorbing the force caused by the damping force of the device 1, so that it is not necessary to make the portion have a strong rigidity, and when the structure 33 vibrates due to an earthquake or the like, at each of the positive and negative maximum displacement positions D±max to the origin position O position Movement, vibration and the restoring force of the coil spring 35 attached to the damping force to absorb the apparatus 1 will cancel each other, whereby the coupling structure 33 may not necessarily have the portion of the reciprocating member 2 has a strong rigidity.

An example of the above-described structure is a vibration-isolating structure 33 realized by a roller 32. Alternatively, the structure 33 may be placed on the floor 31 via a sliding member or the like so that the structure 33 is opposed to the ground 31. It can be moved in the H direction to achieve vibration isolation. Further, the structure may be, for example, a vibration-isolated structure having a laminated rubber support pad. In this case, the coil spring 35 may be omitted and used as an elastic device. The laminated rubber support pad is used for the recovery function, and further, the structure may be a structure that is not subjected to the vibration isolation. In this case, the recovery mechanism is not required to be particularly disposed on an object other than the structure, and the structure may be The object itself has a recovery function. Moreover, the line 41, the curve 52, the line 43 and the curve from FIG. 7 can be obtained on the isolation structure or the structure without the isolation of the channel resistance of the orifice channel of the control orifice valve 15. 54, or the best damping ring shown by line 41, curve 62, line 43 and curve 64. Further, the curve shown in FIG. 7 is for explaining the principle curve. Actually, for example, the curve 42 and the straight line 43 are not connected by the origin (=0), and the curve 44 and the straight line 41 are also the same.

Moreover, the control mechanism 4 controls the control orifice valve 15 of the damping force generating mechanism 3 to reduce the orifice passage of the control orifice valve 15 from the positive and negative maximum displacement position D±max to the origin position O to a fixed diameter. In addition, the control orifice valve 15 of the damping force generating mechanism 3 can also be controlled in the following manner: in the reciprocating movement of the reciprocating member 2 in the H direction, from the positive and negative maximum displacement position D±max to the origin position O During the movement of the position, the diameter of the orifice passage of the control orifice valve 15 is gradually reduced, so that a gradually decreasing damping force R is generated in the damping force generating mechanism 3, and further, the control mechanism 4 and the damping force generating mechanism 3 It can be constituted by a mechanical member that can be operated at the time of power failure, and does not include an electrically actuating member such as the detectors 23, 24, and 25, the control unit 22, and the control orifice valve 15.

1. . . Vibration energy absorbing device

2. . . Reciprocating member

3. . . Damping force generating mechanism

4. . . Control mechanism

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory view showing a preferred embodiment of an embodiment of the present invention.

Fig. 2 is an explanatory view showing an example in which the example shown in Fig. 1 is applied to a structure.

Fig. 3 is an explanatory view of the operation of the example shown in Fig. 2.

Fig. 4 is an explanatory view of the operation of the example shown in Fig. 2.

Fig. 5 is an explanatory view of the operation of the example shown in Fig. 2.

Fig. 6 is an explanatory view of the operation of the example shown in Fig. 2.

Fig. 7 is an explanatory view of the operation of the example shown in Fig. 2.

1. . . Vibration energy absorbing device

2. . . Reciprocating member

3. . . Damping force generating mechanism

4. . . Control mechanism

5. . . piston

6. . . Piston rod

7. . . Installation department

10. . . Pressure cylinder

11,13. . . room

12, 14. . . port

15. . . Control orifice valve

16. . . Oyster sauce

twenty one. . . testing facility

twenty two. . . Control department

23, 24, 25. . . Detector

Claims (9)

A vibration energy absorbing device comprising: a reciprocating member that is responsive to vibration of a structure that is restored to an initial position by vibration of the elastic device, and reciprocally reciprocates at a maximum displacement position with respect to an origin position a damping force generating mechanism that generates a damping force for the reciprocating movement of the reciprocating member; and a control mechanism that controls the damping force generating mechanism in the following manner: in the reciprocating movement of the reciprocating member, the maximum displacement from the positive and negative Each movement of the position to the origin position toward the origin position causes the damping force generating mechanism to generate a damping force for the movement, and on the other hand, the direction from the origin position to the positive and negative maximum displacement position following the movement Each of the positive and negative maximum displacement positions does not cause the damping force generating mechanism to substantially generate a damping force for the movement. The vibration energy absorbing device according to claim 1, wherein the control mechanism controls the damping force generating mechanism to facilitate the movement of the reciprocating moving member in the reciprocating movement from the positive and negative maximum displacement position to the origin position toward the origin position, The damping force generating mechanism generates a substantially constant damping force. The vibration energy absorbing device according to claim 1, wherein the control mechanism controls the damping force generating mechanism to facilitate the movement of the reciprocating moving member in the reciprocating movement from the positive and negative maximum displacement position to the origin position toward the origin position, The damping force generating mechanism produces a gradually decreasing damping force. The vibration energy absorbing device according to any one of claims 1 to 3, wherein the reciprocating member includes a piston and a piston rod coupled to the piston; the damping force generating mechanism includes: a pressure cylinder that reciprocally moves the piston, And through the piston rod; control the orifice valve, which is pressed by one side The chamber in the cylinder is connected by one of the chambers partitioned by the piston, and communicates with other chambers in the cylinder that are partitioned by the piston by the other side; and the fluid contained in the cylinder; the control mechanism reciprocates according to the piston Moving and controlling the orifice valve to facilitate the movement of the piston, the movement from the positive and negative maximum displacement position to the origin position toward the origin position, by controlling the passage of fluid in the orifice valve to generate the movement Damping force, on the other hand, the movement of the positive and negative maximum displacement positions from the origin position to the positive and negative maximum displacement positions continuing the movement, the movement is not substantially caused by the passage of the fluid in the control orifice valve Generates damping force. The vibration energy absorbing device of claim 4, wherein the control mechanism comprises a detecting mechanism for detecting a reciprocating movement of the piston, and controlling the orifice valve according to the detecting mechanism. A structure which is coupled to the vibration energy absorbing apparatus of any one of claims 1 to 5 in such a manner that the structure vibrates with the reciprocating member. The structure of claim 6, which is a vibration isolating device and is coupled to a recovery mechanism that restores the structure to an initial position after vibration. The structure of claim 7, wherein the recovery mechanism comprises a resilient means interposed between the structure and the ground on which the structure is disposed. The structure of claim 8, wherein the elastic means comprises at least one of a laminated rubber support pad and a coil spring.