JPS6358300B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a vibration damping device used for damping the vibrations of various objects, and particularly for suppressing vibrations caused by earthquakes in structures such as buildings, bridges, and towers. The present invention relates to a vibration damping device suitable for suppressing vibrations of devices that generate vibrations such as compressors and automobiles, and suppressing vibrations of piping in chemical plants.

BACKGROUND ART Conventionally, various vibration damping devices using Coulomb friction damping, viscous damping, etc. have been proposed in order to protect structures from vibrations caused by earthquakes and the like. Conventionally proposed vibration damping devices convert the relative linear motion that occurs between an object and a support that supports the object into rotational motion of a rotating body, and suppress the rotation of the rotating body during high acceleration displacement. The rotating body is configured to be braked by a mechanical brake mechanism that operates in conjunction with the motion. For example, a brake mechanism conventionally used in this type of vibration damping device connects an inertial body to a rotating body and engages the inertial body with the rotating body with a predetermined engagement force, so that the acceleration of the rotating body is large. When the rotary body is bent, a relative displacement is generated between the rotary body and the inertial body, and this displacement force is used to generate a braking force on the rotary body. However, this type of brake mechanism has a drawback that it has a complicated structure and lacks operational stability and coordination.Also, because it is mounted in a rigid connection, the stress caused by vibration is concentrated on the mounting part, which may cause fatigue in the mounting part. In some cases, the vibration absorption function may deteriorate due to wear. Furthermore, all of these types of damping devices are effective only against vibrations whose amplitude and period are approximately constant, and are useless against vibrations whose amplitude and period change indefinitely, such as earthquakes.

Purpose of the Invention The purpose of the present invention is to provide a vibration damping system that produces a damping effect that is approximately proportional to the magnitude of vibration force, thereby making it possible to significantly expand the vibration range in which a sufficient vibration damping effect can be obtained. The goal is to provide equipment.

Composition of the Invention The present invention is a vibration damping device that damps the vibration of a damped object, and in the first invention of the present application, a base body having a different vibration system from the vibration damped object is provided, A fluid pressure device is provided for generating a liquid flow in response to relative displacement between the object and the substrate caused by vibration of the object. A power generating device that generates electricity in response to the liquid flow generated by the fluid pressure device is provided, and the electrical energy generated by the power generating device is supplied to an energy consumption circuit for consumption.

Moreover, in the second aspect of the present invention, a fluid pressure drive motor driven by the liquid flow generated by the fluid pressure device is provided, and the power generation device is driven by this fluid pressure drive motor. The electrical energy generated by this generator is consumed by an energy consumption circuit.

In each of the above configurations, when vibration occurs in the damped object, a relative displacement occurs between the damped object and the base body. When a relative displacement occurs between the damped object and the base body, the fluid pressure device generates a liquid flow, which operates the power generation device. These operations convert the vibration energy of the object to be damped into electrical energy, and this electrical energy is consumed by the energy consumption circuit, so that the vibration of the object to be damped is rapidly attenuated.

In the first invention of the present application, a fluid pressure device is interposed between the vibration-damped object and the power generation device, and in the second invention, the fluid pressure device is interposed between the vibration-damped object and the power generation device. A fluid pressure drive motor driven by a liquid flow generated by a fluid pressure device is interposed. Since the fluid pressure device has the same energy transfer function no matter which direction it is installed, it is possible to choose the installation location of the power generation device at will and easily connect the object to be damped and the power generation device. can. Therefore, the vibration damping device of the present invention can be installed regardless of the structure of the object to be damped.

Furthermore, by using a fluid pressure device, it is possible to amplify the displacement of a damped object and transmit it to the power generation device, or to amplify the force generated by the vibration of the damped object and transmit it to the power generation device. Even with vibrations of minute amplitude or vibrations with small vibration energy, the power generation device can be operated sufficiently and a large vibration damping effect can be obtained.

Furthermore, with the configuration of the present invention, the vibration damping effect can be adjusted by the amount of energy consumed in the energy consumption circuit, and can also be adjusted by appropriately selecting the diameter of the cylinder of the fluid pressure device, the viscosity of the fluid, etc. Since the damping effect can be adjusted, the adjustment range of the damping effect can be widened, and it becomes easy to design the device so as to obtain a damping effect suitable for each object to be damped.

In this specification, the term "object" shall be interpreted in the broadest sense, and shall mean any object that vibrates due to external force or internal factors.

Various embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 shows a first embodiment of the present invention. In the figure, 1 is an object whose vibration is to be suppressed, and 2 is a base whose vibration system is different from that of the object 1. ,
It is assumed that the object 1 vibrates with respect to the base 2 in the directions of arrows A ₁ and A ₂ shown in the figure. Reference numeral 3 denotes a fluid pressure device that generates a liquid flow in response to the relative displacement caused between the object 1 and the base 2 due to the vibration of the object 1. In this example, the fluid pressure device 3 is fixed to the base 2. It consists of a hydraulic device comprising a cylinder 301, a piston 302 slidably fitted into the cylinder 301, and a rod 303 connected to the piston 302, and the rod 303 is connected to the object 1. The inside of the cylinder 301 is divided into a first chamber 304A and a second chamber 304B by a piston 302, and both chambers are filled with oil 4. First chamber 304A and second chamber 304 in cylinder 301
B is connected to a cylinder 801 made of non-magnetic material via first and second pipes 5 and 6, respectively. Ring-shaped magnetic pole members 802a to 802g are fitted around the outer periphery of the cylinder 801, and power generating coils 803a to 803f are wound between these magnetic pole members. A movable element 804 made of a piston-shaped permanent magnet is slidably fitted into the cylinder 801, and each part of the cylinder 801 to the permanent magnet 804 constitutes the power generation device 8. The power generation coils 803a to 803f are connected in series, and a resistor 10 constituting the energy consumption circuit 9 is connected to both ends of the series circuit of these power generation coils.

In the configuration shown in FIG. 1 above, when a relative displacement occurs between the object 1 and the base 2 in the direction of arrow _A1 ,
The oil 4 in the first chamber 304A of the cylinder 301 passes through the first pipe 5 to the mover 80 in the cylinder 801.
It flows into the left chamber of 4. As a result, the mover 80
4 is displaced to the right, and the oil in the right chamber of the mover 804 flows into the second chamber 304B of the cylinder 301 through the second pipe 6. Next, when a relative displacement occurs between the object 1 and the base ₂ in the direction of arrow A, the oil in the second chamber 304B of the cylinder 301 flows out and the mover 804 moves to the left in the drawing. Displaced in the direction. Therefore, object 1 vibrates and object 1 and base 2
When a relative displacement occurs between the mover 804 and
moves back and forth, inducing voltage in the power generating coils 803a to 803f. Power generation coils 803a to 803
The electrical energy generated by f is consumed by resistor 10. In this way, when the object 1 vibrates, the vibration energy is converted into electric energy, and the electric energy is consumed by the energy consumption circuit 9, so that the vibration energy of the object 1 is rapidly lost, and the vibration is rapidly Attenuating. As is well known,
Since the electromotive force of the power generation device 8 is proportional to the temporal rate of change of the magnetic flux interlinked with the power generation coil of the power generation device, the vibration damping effect automatically increases or decreases in proportion to the magnitude of the vibration of the object 1. . That is, when the vibration is small, the amount of energy consumed by the resistor 10 is small, but as the vibration becomes large, the amount of energy consumed by the resistor 10 is small.
This increases the amount of energy consumed. Therefore, an appropriate damping effect can always be obtained for vibrations with a wide range of amplitudes, and stagnant vibrations will not occur in the object. Furthermore, since the vibration damping device of the present invention converts vibration energy into electrical energy and consumes this electrical energy, it does not require a separate energy source and can be used even in the event of a power outage.

In the above embodiment, by inserting a flow control valve into at least one of the first pipe 5 and the second pipe 6, the damping effect can be adjusted. Further, in the above embodiment, the movable element 804 of the power generation device 8
For example, a permanent magnet may be used between a pair of piston-shaped magnetic pole pieces that are slidably fitted in the cylinder 801. A structural mover may also be used.

Example 2 In the above example, the power generation device 8 was directly driven by the liquid flow generated by the fluid pressure device 3, but in the case where the power generation device 8 is of a type in which the movable element is linearly displaced as described above. In this case, the amplitude of vibration that can be suppressed is limited by the length of the cylinder 801.

FIG. 2 shows a second embodiment of the present invention in which the amplitude to be suppressed is not limited by the power generation device. A chamber 304A and a second chamber 304B are connected to the hydraulic drive motor 7 via first and second pipes 5 and 6, respectively. The fluid pressure drive motor 7 used in the example of FIG. 2 has a similar structure to a gear pump, and the fluid pressure drive motor 7 is
It is designed to perform both forward and reverse rotation depending on the direction of the flow of oil supplied from the shaft. A power generation device 8 is connected to the output shaft of the motor 7, and the output of the power generation device 8 is supplied to an energy consumption circuit 9 consisting of a resistor 10.

In the configuration shown in FIG. 2 above, when a relative displacement occurs between the object 1 and the base body 2 in the direction of arrow _A1 , the oil 4 in the first chamber 304A of the cylinder 301 moves between the first pipe 5 and the motor 7. the second chamber 3 via the second pipe 6;
04B, and the motor 7 rotates in one direction. Next, when a relative displacement occurs between the object 1 and the base body ₂ in the direction of the arrow A, the oil 4 in the second chamber 304B of the cylinder 301 moves between the second pipe 6, the motor 7 and the first
The motor 7 rotates in the other direction. Therefore, when the object 1 vibrates and a relative displacement occurs between the object 1 and the base 2, the motor 7 repeats forward and reverse rotation,
This causes the power generation device 8 to generate electrical energy. The power generation device 8 is a rotary direct current or alternating current generator, and the electrical energy generated by the power generation device 8 is consumed by a resistor 10 of an energy consumption circuit 9. In this case as well, when the object 1 vibrates, the vibration energy is converted into electrical energy, and the electrical energy is consumed by the energy consumption circuit 9, so that the vibration energy of the object 1 is rapidly lost, and the vibration is rapidly Attenuating.

Embodiment 3 FIG. 3 shows a third embodiment of the present invention. In this embodiment, the middle of the first pipe 5 and the second
Electric flow control valves 11 are installed in the middle of each pipe 6.
and 12 are inserted. A control device 13 is provided to control these flow rate regulating valves, and the flow rate regulating valves 11 and 12 are controlled according to various conditions.
By controlling the vibration damping effect, it is possible to adjust the vibration damping effect. In this case, the flow rate control valve 1
One of 1 and 12 can be omitted. It is also possible to use manual type flow rate control valves 11 and 12 to manually adjust the damping effect.

In the vibration damping device of the present invention, the vibration damping effect can also be adjusted by changing the resistance value of the resistor 10 of the energy consumption circuit 9. For example, if the object 1 is the body of a car and the base 2 is the axle of the car, if the resistance value of the resistor 10 can be changed depending on the rotation angle of the steering wheel, when the car is moving straight, By reducing the vibration damping effect, it softens the suspension of automobiles and improves ride comfort.
When the vehicle is traveling around a curve, the suspension can be made stiffer by increasing the vibration damping effect, thereby increasing driving stability.

Embodiment 4 In each of the above embodiments, the fluid pressure drive motor 7 repeatedly rotates forward and reverse in response to the vibration of the object 1. It can also be rotated in any direction. FIG. 4 shows an example of a configuration in which the fluid pressure driven motor is rotated in one direction. In this example, the first pipe 5 is connected to the motor 7 via the pipe 13 and the check valve 14. The second pipe 6 is connected to a fluid discharge port 702 of the motor 7 via a pipe 15 and a check valve 16. Further, the first pipe 5 is connected to the fluid discharge port 702 of the motor 7 via the pipe 17 and the check valve 18, and the second pipe 6 is connected to the pipe 19.
The fluid supply port 7 of the motor 7 via the check valve 20 and
01. and check valves 14 and 1
6 allows oil flow only in the direction of arrow _A1 ' shown in the figure,
The check valves 18 and 20 allow oil flow only in the direction of arrow A ₂ '. Although not shown, a power generator is connected to the motor 7.

In the example shown in _FIG .
The oil 4 in the first chamber 304A of 1 is transferred to the first pipe 5 → pipe 13 → check valve 14 → motor 7 → check valve 16 → pipe 1
5 → flows into the second chamber 304B via the second pipe 6 route. Also, the object 1 is connected to the base 2 by the arrow shown in the figure.
A When displaced in _two directions, the oil 4 in the second chamber 304B of the cylinder 301 flows from the second pipe 6 → pipe 19 → check valve 20 → motor 7 → check valve 18 → pipe 17 → first pipe 5 It flows into the first chamber 304A through the path of . Therefore, no matter which direction the object 1 is displaced, the direction of oil flow within the motor 7 is the same, and the motor 7 rotates only in one direction.

Embodiment 5 FIG. 5 shows a fifth embodiment of the present invention, in which the fluid pressure device 3 comprises a rotary hydraulic pump 310, which is fixed to the base body 2. The hydraulic pump 310 has a structure that always produces an oil flow in a constant direction no matter which direction it rotates, and a pinion 311 is attached to the rotation shaft of this pump. A rack 21 is engaged with the pinion 311, and the object 1 is connected to this rack 21. The discharge port 312 of the hydraulic pump 310 is connected via the first pipe 5 to the fluid supply port 701 of the fluid pressure drive motor 7 made of a gear motor, a turbine, etc., and the inlet port 313 of the hydraulic pump 310 is connected to the second pipe 6. Discharge port 7 of motor 7 through
Connected to 02. A power generator 8 is connected to the output shaft of the motor 7, and the output of this power generator is the first
It is supplied to the energy consuming circuit 9 in the same way as in the configuration shown.

In the embodiment shown in FIG. 5 as well, the motor 7 rotates in only one direction to drive the power generation device 8, and the output of the power generation device is consumed by the energy consumption circuit 9 to damp the vibrations of the object 1.

Embodiment 6 FIG. 6 shows a sixth embodiment of the present invention. In the same figure, a vibration damped object (not shown) is connected to a rod 303 connected to a piston 302, but in the example of FIG.
Further, a plate-shaped brake member 30 is fixed to the brake member 3 . Braking members 32A and 32B to which brake pads 31A and 31B are attached are arranged so as to sandwich the braked member 30, and the braking members 32A and 32B are biased away from each other by springs 33A and 33B, respectively. These braking members 3
2A and 32B are connected to an output piston rod 36 of a hydraulic booster 35 via a link mechanism 34. The pivot point P of the link mechanism 34 is fixed with respect to the base 2, and when the piston rod 36 is displaced in the direction of the arrow B shown in the figure, the braking members 32A and 32B are displaced in the direction toward each other, and the braked member 30 is displaced. It is designed to be tightened via brake pads 31A and 31B. cylinder 301
The first chamber 304A and the second chamber 304B are the second chamber 304A and the second chamber 304B.
The excitation coil 39 of the electromagnet 38 is connected in series to the resistor 10 of the energy consumption circuit 9, which is connected to the hydraulic drive motor 7 in the same way as in the embodiment shown. The electromagnet 38 has a plunger 40 which is connected to an input piston rod 41 of the hydraulic booster 35.

In the example shown in FIG. 6, a DC generator is used as the power generation device 8, and when the motor 7 rotates due to the vibration of the object to be damped and the power generation device 8 generates an output, a current flows through the excitation coil 39 of the electromagnet 38. The plunger 40 is displaced in the direction of arrow B' shown in the figure. When the plunger 40 is displaced in the direction of arrow B', the piston rod 36 is displaced in the direction of arrow B, so that the braking members 32A and 32B are
is tightened to brake the relative displacement between the base 2 and the object to be damped. That is, in this example, the vibrational energy of the object is converted into electrical energy and a part of it is consumed by the energy consumption circuit 9, and at the same time,
Since the relative displacement between the object and the base body is mechanically damped, the vibrations of the object can be damped in a short time.

In each of the above embodiments, the vibration damping effect can be adjusted by using a variable resistor as the resistor 10 of the energy consumption circuit 9 or by appropriately switching a plurality of resistors so that they can be connected to the power generation device 8. . Alternatively, the resistance value of the resistor 10 may be set to zero, and the energy may be consumed by the internal resistance of the power generating device 8.

In the embodiments shown in FIGS. 1 to 4 and 6, the rod 303 is connected to the object to be damped and the cylinder 301 is connected to the base body 2, but conversely, the rod 303 is connected to the base body 2. , the cylinder 301 can also be connected to the object 1 to be damped. In the embodiment shown in FIG. 5, the rack 21 can also be connected to the base body 2 and the pump 310 can be connected to the object 1 to be damped.

Next, a more specific embodiment of the present invention will be described with reference to FIGS. 7 to 10.

Embodiment 7 FIG. 7 shows a case where the vibration of an object 1 supported by a base 2 via a support 41 is suppressed.
is a structure such as an oil tank, which suppresses the vibration of the object 1 in the directions of arrows A ₁ and A ₂ shown in the figure.
The base body 2 has two parts spaced apart in the vibration direction of the object 1.
Brackets 42a, 42b are fixed. The lower ends of connecting rods 43a and 43b are respectively pivotally supported on these brackets.
Fluid pressure device 3a,
Cylinders 301a and 301b forming part 3b are fixed. On the other hand, there is a bracket 44 on the lower surface of the object 1 corresponding to the brackets 42a and 42b.
a, 44b are fixed, and the pistons 3 in the cylinders 301b, 301a are fixed to these brackets.
Rod 303b connected to 02b, 302a,
The upper end of 303a is pivoted. A fluid pressure drive motor 7 is also fixed on the base body 2, and a cylinder 3
01a first chamber 304A and second chamber 304B
are connected to fluid supply/discharge ports 701 and 702 of the motor 7 via flexible tubes 5a and 6a, respectively. Also, the first chamber 3 of the cylinder 301b
04A and the second chamber 304B are connected to fluid supply/discharge ports 702 and 701 of the motor 7 via flexible tubes 5b and 6b, respectively. A power generation device (not shown) is connected to the motor 7, and the output of this power generation device is supplied to an energy consumption circuit.

In FIG. 7, object 1 is shown by the arrow
When displaced in _one direction, rods 303a and 30
3b are displaced in the directions of arrows A ₁ ′ and A ₁ ″, respectively;
Oil flows into the motor 7 from the direction of arrow _B1 , causing the motor 7 to rotate in one direction. Next, when the object 1 is displaced in the direction of arrow A with respect to the base ₂ , the rod 303a
and 303b are displaced in the directions of arrows A ₂ ′ and A ₂ ″, respectively, and oil flows into the motor 7 from the direction of arrow B ₂ , causing the motor 7 to rotate in the other direction. By repeating these operations, the power generator outputs is generated and this output is consumed by the energy consuming circuit, whereby the vibrational energy of the object 1 is rapidly dissipated and the vibrations are damped.

Embodiment 8 FIG. 8 shows a case where vibrations of a rectangular parallelepiped structure 50 in X and Y directions perpendicular to each other are suppressed. In this example, a side surface 50A of the structure 50 perpendicular to the X direction is suppressed. and the side surface 50 perpendicular to the Y direction
A vibration damping device of the present invention is attached to each of B and B. That is, two fluid pressure devices 3a are installed on the side surface 50A.
Rods 303a and 303b connected to the pistons in the cylinders 3b and 3b are arranged diagonally across each other in the same way as in FIG. The rods 43a and 43b are pivotally supported at the lower corners of the frame. Also side 50B
, rods 303c and 303c are connected to pistons in the cylinders of two hydraulic devices 3c and 3d.
03d are arranged diagonally across, and these rods are pivoted to the upper corners of the frame on side 50B. Further, rods 43c and 43d supporting the cylinders 3c and 3d are pivotally supported at the lower corners of the same frame, and the first chamber and second chamber in the cylinder of the fluid pressure device 3c are connected to the first pipe 5c, respectively.
and 6c to the motor 7c.
Further, the first chamber and the second chamber in the cylinder of the fluid pressure device 3d are connected to the first pipe 5d and the second pipe 6, respectively.
d to a motor 7d, and power generators 8c and 8d are connected to the motors 7c and 7d, respectively. In this example, the portions on which the rods 43a to 43d supporting each cylinder are pivoted are attached to the base 2.
functions as

When a vibration damping device is installed as shown in FIG. 8, it is possible to attenuate the X-direction component and the Y-direction component of the vibration of the structure 50, so all horizontal vibrations of the structure 50 can be attenuated. .

In the embodiment shown in FIG. 8, a fluid pressure driving motor and a power generation device can be individually provided for each of the fluid pressure devices 3a and 3b, and a fluid pressure drive motor and a power generation device can be provided in common for both the fluid pressure devices 3c and 3d. A drive motor and a power generator can be provided.

Embodiment 9 FIG. 9 shows a modification of how to attach the vibration damping device of the present invention when suppressing the vibration of a structure similar to the embodiment shown in FIG. Parts that are equivalent to those shown in are given the same reference numerals. In the example of FIG. 9, two fluid pressure devices 3
The rods 303a and 303b of brackets 44a and 44a are arranged in parallel, respectively.
It is pivoted on b. Further, each support column 41 is vertically divided into a first part 41A and a second part 41B, and a shock absorber 400 such as a spring is disposed between the first part 41A and the second part 41B. has been done.
In this example of FIG. 9, object 1 is the arrow shown in the figure.
A Piston rod 303a when tilted in _one direction
and 303b are displaced in the directions of arrows _A1 ' and _A1 '', respectively, and when the object 1 is tilted in the direction of arrow _A2 shown, the piston rods 303a and 303b are displaced in the directions of arrows _A2 ' and _A2 '', respectively. Suppress vibration.

Embodiment 10 FIG. 10 shows an example in which vertical vibration of a vibration damped object 1 is suppressed. In this embodiment, the vibration damped object 1 is a cylinder fixed to a base 2. It is inserted into a shaped oil tank 51. A piston part 52 that slides along the inner surface of the oil tank 51 is attached to the outer surface of the object 1, and the object 1 and the oil tank 51 are connected to each other.
The fluid pressure device 3 is configured by the above. Object 1
A spring 5 is connected between the bottom surface of the oil tank 51 and the bottom surface of the oil tank 51.
3 and 53 are arranged, and the object 1 is supported by these springs. The interior of the oil tank 51 is divided into a first chamber 55A and a second chamber 55 by the piston portion 52.
A first chamber 55A and a second chamber 5
5B are connected to a hydraulic drive motor 7 by flexible tubes 5 and 6, respectively. In this example, the base 2 is, for example, the earth, and the object to be damped 1 is, for example, a structure such as an oil tank.

In each of the embodiments shown in FIGS. 8 to 10 above, the directions of vibration that can be suppressed are limited to some extent, but by combining these embodiments, it is possible to suppress vibrations in all directions. It is. For example, by adding the vibration damping device of the present invention to the embodiment shown in FIG. 8 in the horizontal direction, that is, parallel to the floor or ceiling, vibrations in all directions including vertical vibrations can be damped.

Effects of the Invention As described above, according to the present invention, vibration is attenuated by converting vibration energy into electrical energy and consuming it, so it is possible to obtain a sufficient vibration damping effect even when the amplitude of vibration is not constant. can. Further, since the amount of attenuation of vibration energy changes approximately in proportion to the amplitude of vibration, an appropriate vibration damping effect can always be obtained. In particular, in the present invention, a fluid pressure device that can be installed in any orientation is interposed between the object to be damped and the power generation device, and the vibrations of the object to be damped are transmitted to the power generation device via the fluid pressure device. So,
The advantage is that the installation location of the generator can be chosen arbitrarily, and the vibration-damped object and the generator can be easily connected, and the vibration damper can be installed regardless of the structure of the vibration-damped object. There is.

In addition, by adopting a configuration in which the vibration of the damped object is transmitted to the power generation device via the fluid pressure device, the displacement of the damped object can be expanded and transmitted to the power generation device.
It is possible to amplify the force generated by the vibration of the object to be damped and transmit it to the power generation device, so even with very small amplitude vibrations or vibrations with low vibration energy, the power generation device can be operated sufficiently and a large vibration damping effect can be obtained. It has the feature of being able to

Further, according to the present invention, the vibration damping effect can be adjusted by adjusting the amount of energy consumed in the energy consumption circuit, and also by appropriately selecting the diameter of the cylinder of the fluid pressure device, the viscosity of the fluid, etc. Since the effect can be adjusted, the adjustment range of the vibration effect can be widened, and there is an advantage that it is possible to easily design a vibration damping effect that is suitable for each object to be damped. In particular, according to the invention of claim 2, since the power generation device is driven by the fluid pressure drive motor, there is an advantage that it can be applied regardless of the amplitude of the vibration of the object to be damped.

Further, since the power generation device used in the present invention may have a large loss, it can be constructed at low cost.

[Brief explanation of the drawing]

FIGS. 1 to 6 are schematic configuration diagrams showing various different configuration examples of the present invention, and FIGS. 7 to 8 are partially cross-sectional views of different embodiments of the vibration damping device of the present invention, respectively. FIG. 9 is a schematic front view, and FIG. 9 is a partially cutaway perspective view of another embodiment of the present invention.
The figure is a sectional view showing still another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Object to be damped, 2...Base, 3...Fluid pressure device, 7...Fluid pressure drive motor, 8...Power generator, 9...Energy consumption circuit, 10...Resistor.

Claims (1)

[Scope of Claims] 1. A vibration damping device for damping the vibration of an object to be damped, which includes a base having a different vibration system from the object, and a relative vibration generated between the object and the base due to the vibration of the object. A fluid pressure device that generates a liquid flow in response to a displacement, a power generation device that generates power in response to the liquid flow, and an energy consumption circuit that consumes electrical energy generated by the power generation device. vibration damping device. 2. A vibration damping device that damps the vibrations of an object to be damped, including a base whose vibration system is different from that of the object, and a vibration damping device that responds to the relative displacement that occurs between the object and the base due to the vibration of the object. A fluid pressure device that generates a liquid flow, a fluid pressure drive motor driven by the liquid flow, a power generation device driven by the fluid pressure drive motor, and an energy consumption circuit that consumes electrical energy generated by the power generation device. A vibration damping device characterized by comprising: