JP3157352U - Elliptical leaf spring unit, elliptical multi-stage leaf spring device, vertical vibration damping device, horizontal uniaxial vibration damping device, and upper and lower floor seismic isolation device - Google Patents

Abstract

[PROBLEMS] To obtain a large amount of deformation in order to cope with a large response amplitude while having a simple configuration using a leaf spring, and to reduce friction at the time of deformation, which is suitable for vibration control or seismic isolation. An elliptical multistage leaf spring device is provided. The elliptical multistage leaf spring device 11 has two rectangular leaf spring members 2a, 2b, with the eyeball-like meshing portions in the state where the center portions of the two leaf spring members 2a, 2b are bulged outwardly. The elliptical leaf spring unit 1 is formed by combining the bolts to form an elliptical shape, and the deformation amount in the elliptical short axis direction to which a load is applied is several times the deformation amount in the elliptical long axis direction. In this configuration, four stages are stacked so that a load is applied to the gantry 13 in the elliptical short axis direction, and the deformation amount in the elliptical short axis direction is increased by the number of stages. [Selection] Figure 10

Description

  The present invention relates to a single elliptical leaf spring, an elliptical multi-stage leaf spring device, a vertical vibration damping device, a horizontal single-axis vibration damping device, and a vertical floor seismic isolation device. Vibration control device for vibration measures to improve safety and comfort for vibration input during strong winds etc., elliptical leaf spring unit and elliptical multistage leaf spring device suitable for use as main elements of seismic isolation device, In addition, the present invention relates to a vertical vibration damping device, a horizontal uniaxial vibration damping device, and a vertical floor seismic isolation device using the elliptical multistage leaf spring device.

Conventional seismic isolation devices, for example, are often composed of a combination of laminated rubber as a bearing, a rolling mechanism such as a linear guide, a damping device, etc., but most of them are measures only for horizontal seismic isolation. .
In the horizontal seismic isolation device, a spring device is designed so that the vibration of the seismic isolation target structure has as long a period as possible, and a damping device is used in combination to control the vibration amplitude.

  Many vertical seismic isolation devices, for example, use air springs, but the natural period in this case is limited to 1 second. However, recently, due to the spread of seismic isolation target structures, the number of cases where the natural period is nearly 2 seconds has increased.

  On the other hand, there are many examples of vibration damping devices, such as rolling bearings and damping devices in combination for vertical and horizontal vibration suppression measures. Since the number of structures has increased and the response amplitude has become very large, countermeasures are required.

  Furthermore, as a vibration control device, in the case of a large structure such as a bridge or a skyscraper, the natural period is required to be about 6 seconds. It is necessary that the friction of this is as small as possible.

  However, at present, an elliptical leaf spring unit that is configured to be able to obtain a large amount of deformation in order to cope with a large response amplitude while having a simple configuration using a leaf spring, and to reduce friction during deformation. In addition, there are no elliptical multi-stage leaf spring devices.

  Patent Document 1 is a vibration damping device using a leaf spring, which has a structure in which a leaf spring damping unit in which a plurality of curved leaf springs are superposed at the intersection of a plurality of frame members constituting a building is incorporated. Damping devices have been proposed. However, even in the case of this Patent Document 1, it is not a leaf spring structure that can cope with long-period vibration.

JP 2009-174198 A

  The problem to be solved by the present invention is that it has a simple configuration using a leaf spring, but can obtain a large amount of deformation in order to cope with a large response amplitude. There are no elliptical leaf springs suitable for use or seismic isolation, and no elliptical multistage leaf spring device.

  An elliptical leaf spring for damping or seismic isolation according to the present invention is an ellipse formed by joining both ends of two rectangular leaf spring materials with their central portions bulging outward. The main feature is that the deformation amount in the elliptical short axis direction to which a load is applied is formed to be several times the deformation amount in the elliptical long axis direction.

  According to the invention described in claim 1, both ends of the two rectangular leaf spring members are joined together with their central portions bulging outward to form an elliptical shape, and an elliptical short axis to which a load is applied. By forming the amount of deformation in the direction to be several times the amount of deformation in the major axis direction of the ellipse, when the load is applied in the direction of the minor axis of the ellipse, the load supporting function and restoring function can be exhibited while obtaining a large amount of deformation. It is possible to realize and provide a single elliptical leaf spring suitable for damping or seismic isolation.

  According to the invention described in claim 2, the same effect as that of the invention described in claim 1 is exhibited, and both ends of the two leaf spring members are joined by eyeball-shaped engagement or by bolting. It is possible to realize and provide an elliptical leaf spring which is suitable for vibration control or seismic isolation with little friction at the time.

  According to the invention described in claim 3, the same effect as that of the invention described in claim 2 is exhibited, and the bulging area in the center formed by the two leaf spring members is provided with a damping device, a buffer or a stopper. By arranging the additional elements to be selected, the vibration damping, vibration damping or vibration range regulation can be exhibited, and an elliptical leaf spring suitable for damping or seismic isolation can be realized. Can be provided.

  According to the invention of claim 4, the elliptical leaf spring unit of the invention of claim 1 is stacked in multiple stages so that a load acts in the direction of the minor axis of the ellipse between the base frame and the load support frame, Since the amount of deformation in the direction of the minor axis of the ellipse is increased by the number of steps, the load support function and restoration function can be exhibited while securing a large amount of deformation for the number of steps of each elliptical plate spring alone, and vibration suppression It is possible to realize and provide an elliptical multi-stage leaf spring device suitable for use or seismic isolation.

  According to the invention described in claim 5, the same effect as that of the invention described in claim 4 is exhibited, and both ends of the two leaf spring members in each elliptical leaf spring alone are tightened or bolted together. As a result, the elliptical multistage leaf spring device suitable for vibration control or seismic isolation can be realized and provided with little friction during deformation as a whole.

  According to the invention of claim 6, the same effect as that of the invention of claim 5 is exhibited, and in the bulging region of the central portion formed by the two leaf spring materials in each elliptical leaf spring alone, By arranging additional elements selected from damping devices, buffers or stoppers, it is possible to exert vibration damping, vibration buffering or vibration range regulation, respectively, and an ellipse suitable for damping or seismic isolation A shape multi-stage leaf spring device can be realized and provided.

  According to the invention described in claim 7, both ends of the two rectangular leaf spring members are joined in an eyeball-like engagement form or with bolt tightening in a state in which the respective central portions are bulged outward. The elliptical leaf spring, which has a shape and the deformation amount in the elliptical short axis direction to which a load is applied, is formed several times as large as the deformation amount in the elliptical long axis direction, is stacked in multiple stages so that the load acts in the elliptical short axis direction, Since a plurality of elliptical multistage leaf spring devices in which the amount of deformation in the elliptical minor axis direction is increased by the number of stages are arranged side by side between the base mount and the vibration control object, in each elliptical multistage leaf spring device, The load support function and restoration function can be demonstrated while securing a large deformation amount for each elliptical leaf spring unit, and the vibration damping object can be controlled vertically with little friction during deformation as a whole. Realize and provide a vertical vibration control device Can.

  According to the invention described in claim 8, the effect of the invention described in claim 7 is exhibited, and each of the elliptical multistage leaf spring devices also exhibits the function of vibration damping, vibration buffering or vibration range regulation. It is possible to realize and provide a vertical vibration control device capable of

  According to the invention described in claim 9, both ends of two rectangular leaf spring members are joined in an eyeball-like engagement form or with bolt tightening in a state where each central portion is bulged outward. The elliptical leaf spring, which has a shape and the deformation amount in the elliptical short axis direction to which a load is applied, is formed several times as large as the deformation amount in the elliptical long axis direction, is stacked in multiple stages so that the load acts in the elliptical short axis direction, An elliptical multi-stage leaf spring device in which the amount of deformation in the direction of the minor axis of the ellipse is increased by the number of stages, and a pair of fixed portions arranged at both ends of the base gantry and a guide rail on the base gantry are arranged so as to be horizontally movable. Since each of the elliptical multi-stage leaf spring devices is arranged between both side surfaces of the vibration suppression object, the restoration function is exhibited while ensuring a large deformation amount corresponding to the number of each elliptical leaf spring unit. And the friction during deformation as a whole To achieve horizontal uniaxial vibration damping device capable of performing a horizontal uniaxial vibration damping target can be provided in the absence.

  According to the invention of claim 10, the effect of the invention of claim 9 is exhibited, and each of the elliptical multistage leaf spring devices also exhibits the function of vibration damping, vibration buffering or vibration range regulation. It is possible to realize and provide a horizontal single-axis vibration control device capable of

  According to the eleventh aspect of the present invention, both ends of the two rectangular leaf spring members are joined to each other in an eyeball-like engagement form or with bolt tightening in a state where the central portions of the two leaf spring members are bulged outward. The elliptical leaf spring, which has a shape and the deformation amount in the elliptical short axis direction to which a load is applied, is formed several times as large as the deformation amount in the elliptical long axis direction, is stacked in multiple stages so that the load acts in the elliptical short axis direction, Since a plurality of elliptical multi-stage leaf spring devices in which the amount of deformation in the elliptical minor axis direction is increased by the number of stages are arranged between the base portion and the floor structure on the base portion, each elliptical multi-stage plate In the spring device, the load support function and the restoration function can be exhibited while ensuring a large deformation amount for each elliptical leaf spring, and the floor structure can be lifted up and down with little friction during deformation as a whole. Realized and provided a seismic isolation device for upper and lower floors that can perform earthquakes It can be.

  According to the twelfth aspect of the present invention, the effects of the twelfth aspect of the present invention can be exhibited, and each of the elliptical multistage leaf spring devices can also exhibit the functions of vibration damping, vibration damping, or vibration range regulation. Can realize and provide a seismic isolation device for upper and lower floors.

FIG. 1 is a plan view of an elliptical leaf spring for vibration damping or seismic isolation according to Embodiment 1 of the present invention. FIG. 2 is a front view of a vibration-damping or seismic isolation elliptic leaf spring according to the first embodiment. FIG. 3 is a front view of a first modification of the vibration-damping or seismic isolation elliptic leaf spring according to the first embodiment. FIG. 4 is a front view showing a second modification of the vibration-damping or seismic isolation elliptic leaf spring according to the first embodiment. FIG. 5 is a plan view showing a third modification of the vibration-damping or seismic isolation elliptic leaf spring according to the first embodiment. FIG. 6 is a front view showing a third modification of the vibration-damping or seismic isolation elliptic leaf spring according to the first embodiment. FIG. 7 is a front view showing a fourth modification of the vibration-damping or seismic isolation elliptic leaf spring according to the first embodiment. FIG. 8 is a front view showing a fifth modification of the vibration-damping or seismic isolation elliptic leaf spring according to the first embodiment. FIG. 9 is a plan view of an elliptical multi-stage leaf spring device according to Embodiment 2 of the present invention. FIG. 10 is a side view of the elliptical multistage leaf spring device according to the second embodiment. FIG. 11 is a front view showing a guide pin combined with the elliptical multistage leaf spring device according to the second embodiment. FIG. 12 is a plan view of a vertical vibration damping device according to Embodiment 3 of the present invention. FIG. 13 is a schematic front view of the vertical vibration damping device according to the third embodiment. FIG. 14 is an explanatory diagram showing a design example of a single elliptical leaf spring used in the vertical vibration damping device according to the third embodiment. FIG. 15: is a front view which shows the locking prevention apparatus combined with the vertical vibration damping device based on the present Example 3 as needed. FIG. 16 is a plan view showing a horizontal uniaxial vibration damping device according to Embodiment 4 of the present invention. FIG. 17 is a front view of the horizontal uniaxial vibration damping device according to the fourth embodiment. FIG. 18 is a plan view showing the upper and lower floor seismic isolation device according to Embodiment 5 of the present invention. FIG. 19 is a front view illustrating the upper and lower floor seismic isolation device according to the fifth embodiment. FIG. 20 is a front view showing still another example of the vibration-damping or seismic isolation elliptic leaf spring according to the first embodiment.

  Although the present invention has a simple configuration using a leaf spring, a large amount of deformation can be obtained in order to cope with a large response amplitude, and there is also little friction during deformation, which is suitable for damping or seismic isolation. The purpose of realizing and providing a simple elliptical multi-stage leaf spring device is to join both ends of two rectangular leaf spring materials with their central portions bulging outwardly to form an elliptical shape, An elliptical leaf spring with a deformation amount in the elliptical minor axis direction to which a load is applied is several times larger than the deformation amount in the elliptical major axis direction.A load is applied in the elliptical minor axis direction between the base frame and the load support frame. It was realized by a configuration in which the amount of deformation in the elliptical minor axis direction was increased by the number of steps by overlapping in multiple stages so as to act.

  Hereinafter, the vibration-damping or seismic isolation elliptic leaf spring unit 1 according to the first embodiment of the present invention will be described in detail.

FIGS. 1 and 2 show an elliptical leaf spring unit 1 for vibration damping or seismic isolation according to Embodiment 1 of the present invention (hereinafter also referred to as “elliptical leaf spring unit 1”). The shape leaf spring unit 1 is formed by joining both ends of two rectangular leaf spring members 2a and 2b with, for example, eyeball-like meshing portions 3a and 3b in a state where the center portions of the two leaf spring materials 2a and 2b bulge outward. As shown in FIG.
The leaf spring materials 2a and 2b are formed to have the same thickness t and width b, respectively, and the span between the eyeball-shaped engagement portions 3a and 3b is L, and the center portion of the leaf spring materials 2a and 2b is The bulge dimension is set to L0.

  The deformation amount in the elliptical short axis direction to which a load is applied is formed to be several times the deformation amount in the elliptical long axis direction.

  According to the elliptical plate spring unit 1 according to the first embodiment, when a load is applied in the elliptical short axis direction of the elliptical plate spring unit 1, the load supporting function and the restoring function are exhibited while obtaining a large deformation amount. Therefore, it is possible to realize the elliptical leaf spring simple substance 1 suitable for damping or seismic isolation.

Moreover, the friction at the time of a deformation | transformation under a load effect | action can also be reduced by having couple | bonded both ends with the eyeball-shaped meshing parts 3a and 3b.
FIG. 3 shows an elliptical leaf spring unit 1A, which is a first modification of the elliptical leaf spring unit 1, and this elliptical plate spring unit 1A is in addition to the configuration of the elliptical plate spring unit 1 described above. In addition, a damping device 4 made of, for example, an oil damper or the like is added as an additional element to the bulging portion at the center of both leaf spring materials 2a and 2b.

  According to the elliptical leaf spring single body 1A, in addition to exhibiting the function and effect of the elliptical leaf spring single body 1 of the first embodiment, the damping device 4 also exerts a vibration damping action during deformation under a load action. Thus, it is possible to realize an elliptical leaf spring simplex 1A suitable for damping or seismic isolation.

  FIG. 4 shows an elliptical leaf spring element 1B which is a second modification of the elliptical leaf spring element 1. This elliptical leaf spring element 1B is in addition to the configuration of the elliptical leaf spring element 1 described above. In addition, a stopper 6 including a pair of stopper pieces 5a and 5b is added as an additional element, for example, in a vertically opposed arrangement at the center of the leaf spring materials 2a and 2b.

  According to the elliptical leaf spring single body 1B, in addition to exhibiting the function and effect of the elliptical leaf spring single body 1 of the first embodiment, it is possible to exhibit the regulating action of the vibration range at the time of deformation under load action. An elliptical leaf spring simple substance 1B suitable for damping or seismic isolation can be realized.

  In place of the stopper 6, a buffer may be provided as an additional element (not shown) at the bulging portion in the center of both leaf spring materials 2a and 2b. In this case, the elliptical plate An elliptical leaf spring suitable for damping or seismic isolation that can exhibit the same effect as that of the spring alone 1 and can also exert a vibration buffering action during deformation under load. Can be realized.

  5 and 6 show an elliptical leaf spring unit 1C as a third modification according to the first embodiment of the present invention, and the basic configuration is the same as that of the elliptical leaf spring unit 1 described above. However, this elliptical leaf spring unit 1C is bolted with, for example, bolts 7 and nuts 8 with both ends of the two rectangular leaf spring materials 2a and 2b bulged outwardly from each other. And are configured so as to exhibit an elliptical shape as viewed from the front as a whole.

According to the elliptical leaf spring unit 1C of the third modified example, the same effect as that of the elliptical leaf spring unit 1 according to Example 1 can be exhibited, and both ends are coupled by bolting. As a result, friction during deformation under the action of a load can also be reduced.
FIG. 7 shows an elliptical leaf spring unit 1D which is a fourth modification according to the first embodiment of the present invention. This elliptical leaf spring unit 1D is in addition to the configuration of the above-described elliptical plate spring unit 1C. In addition, a damping device 4 made of, for example, an oil damper or the like is added as an additional element to the bulging portion at the center of both leaf spring materials 2a and 2b.

  According to the elliptical leaf spring unit D of the fourth modified example, the same effect as that of the elliptical leaf spring unit 1C of the third modified example can be exhibited, and the damping device 4 can be applied under a load action. An elliptical leaf spring unit 1D suitable for vibration control or seismic isolation that can also exhibit a vibration damping action during deformation can be realized.

  FIG. 8 shows an elliptical leaf spring unit 1E as a fifth modification according to Embodiment 1 of the present invention. This elliptical leaf spring unit 1E is in addition to the configuration of the above-described elliptical plate spring unit 1C. In addition, for example, a stopper 6 including a pair of stopper pieces 5a and 5b is added as an additional element to the bulging portion at the center of both leaf spring materials 2a and 2b in a vertically opposed arrangement.

According to the elliptical leaf spring simple substance 1E of the fifth modification, the same effect as that of the elliptical leaf spring simple substance 1C of the third modification can be exhibited, and the stopper 6 is added. The elliptical leaf spring simple substance 1E suitable for vibration control or seismic isolation that can also exert a regulating action of the vibration range at the time of deformation under a load action can be realized.
In place of the stopper 6, it is also possible to adopt a configuration in which a buffer is provided as an additional element (not shown) at the bulging portion of the central part of both leaf spring materials 2a, 2b. In this case, the third modification An ellipse suitable for damping or seismic isolation that can exhibit the same effect as that of the elliptical leaf spring unit 1C and that can also exhibit a vibration buffering action during deformation under load. A single shaped leaf spring can be realized.

  Next, an elliptical multistage leaf spring device 11 according to a second embodiment of the present invention will be described with reference to FIGS. 9 to 11.

  The elliptical multi-stage leaf spring device 11 shown in FIG. 9 and FIG. 10 has an arrangement that occupies a central portion between a rectangular plate-shaped base mount 12 and a similarly rectangular plate-shaped load support mount 13. A single circular leaf spring 1 is superposed in a plurality of stages, for example, four stages so that a load is applied in the direction of the minor axis of the ellipse, and the amount of deformation in the direction of the minor axis of the ellipse is increased to four times that in the case of one stage. At the same time, a pair of damping devices 14 are arranged at both corners of the base frame 12 and the load support frame 13.

  According to the elliptical multi-stage leaf spring device 11, the load supporting function and the restoring function can be exhibited while securing a large deformation amount corresponding to the number of stages of each of the elliptical leaf springs 1 and two leaf springs are provided. Realizing and providing an elliptical multi-stage leaf spring device 11 suitable for vibration damping or seismic isolation with little friction during deformation as a whole by joining both ends of the materials 2a and 2b in an eyeball-like engagement form it can.

  In this case, the above-described elliptical leaf springs 1A, 1B, 1C, 1D, and 1E can be adopted instead of the elliptical leaf springs 1 and thereby vibration damping, vibration damping, or vibration corresponding to each can be adopted. It is possible to realize and provide the elliptical multi-stage leaf spring device 11 capable of exhibiting the action and effect such as the restriction of the range.

  In addition, it is also possible to add the guide pin 15 which combined the spline shaft 16 and the nut 17 which are shown in FIG.

  Next, a vertical vibration damping device 21 according to Embodiment 3 of the present invention will be described with reference to FIGS.

  Initially, the design example of the elliptical leaf | plate spring 1 which comprises the elliptical multistage leaf | plate spring apparatus 11 used in the present Example 3 is demonstrated with reference to FIG.

  The elliptical leaf spring 1 has a plate thickness t of 20 mm, a leaf width b of 150 mm, a span L between the eyeball-like engagement portions 3a and 3b of 1600 mm, and the center of both leaf spring materials 2a and 2b. When the bulge dimension (free height) L0 of the part is set to 600 mm, the spring constant is 5 kgf / mm, and a load of 2000 kg is applied in the direction of the minor axis of the elliptical leaf spring 1, the bulge dimension of the central part (mounting height) ) Is set to 200 mm, and thereby, the vibration frequency is 0.4 Hz, the mounting deflection is about 1600 mm, and the dynamic deflection is about ± 600 mm.

  As shown in FIGS. 12 and 13, the vertical vibration damping device 21 according to the third embodiment is described above between the flat base mount 22 and a rectangular parallelepiped vibration damping object 23 (for example, a load of 8000 kg). For example, four elliptical multi-stage leaf spring devices 11 configured by using the single elliptical leaf spring 1 are arranged in a vertical arrangement, and the four elliptical multi-stage leaf spring devices 11 are used for vertical vibration suppression of the object to be controlled. It is comprised so that it may perform.

  Further, the lower leaf spring material 2b of each lowermost elliptical multi-stage leaf spring device 11 and the upper surface of the base gantry 22 are respectively connected by a lower coupler 24, and each uppermost elliptical multistage leaf spring device. The upper plate spring material 2 a of 11 and the lower surface portion of the vibration control object 23 are connected to the upper coupler 25.

  Further, the leaf spring members 2a and 2b adjacent to each other in the vertical direction of each elliptical multi-stage leaf spring device 11 are connected by a leaf spring connector 26, respectively.

  As a specific numerical example of the vertical vibration damping device 21 according to the third embodiment, when the vibration control object (8000 kg) 23 has a width of, for example, 1900 mm, a depth of 900 mm, and a height of 600 mm, the vibration control object 23 is installed on the four elliptical multi-stage leaf spring devices 11, the damping object 23 descends from the position shown in FIG. 13 to the position indicated by the dotted line, and each elliptical multi-stage leaf spring device 11 has a free height. It is compressed from a height of 2785 mm (including the lower coupler 24, the leaf spring coupler 26, and the upper coupler 25) to a mounting height of 1185 mm. That is, an example in which the mounting deflection is about 1600 mm can be given.

  In the vertical vibration damping device 21 according to the third embodiment, an oil damper 27 or a link mechanism unit 28 can be added to the vertical vibration damping device 21 as necessary.

  According to the vertical vibration damping device 21 according to the third embodiment, each elliptical multi-stage leaf spring device 11 secures a large amount of deformation for each of the four elliptical leaf springs 1 and supports the load while extending the vibration period. The function and the restoration function can be exhibited, and the vibration control object 23 can be controlled in the vertical direction with little friction during deformation as a whole.

  In this case, in the vertical vibration damping device 21, the elliptical leaf springs 1A, 1B, 1C, 1D, and 1E can be adopted instead of the elliptical leaf springs 1 and this corresponds to each. Actions and effects such as vibration damping, vibration buffering, or vibration range regulation can be exhibited.

  In addition, the vertical vibration control device 21 requires a natural period of about 6 seconds as in a large structure such as a bridge or a skyscraper, and can cope with minimizing friction during vibration. It becomes.

  FIG. 15 shows a locking prevention device 29 that is combined with the vertical vibration damping device 21 as necessary.

  Next, a horizontal uniaxial vibration damping device 31 according to Embodiment 4 of the present invention will be described with reference to FIGS.

  In the horizontal uniaxial vibration damping device 31, a guide rail 33 is laid, for example, in the horizontal uniaxial (X-axis) direction on a horizontally arranged flat base frame 32, and the vibration is controlled by the guide rail 33 and the guide piece 33a. The object 34 is configured to be guided so as to be displaced in the horizontal one axis (X axis) direction.

In addition, a pair of fixing portions 32a and 32b are erected so as to oppose both ends of the base gantry 32 with the damping object 34 interposed therebetween, and In addition, between the one surface of the fixing portion 32b and the other surface of the vibration control object 34, the four elliptical multistage leaf spring devices 11 in total, two on each side, are arranged so that a load acts in the direction of the minor axis of the ellipse. It is set.
In addition, it can also be set as the structure which added the damping device 35 like the oil damper shown in FIG. 16 as needed.

  According to the horizontal uniaxial vibration damping device 31 according to the fourth embodiment, in the four elliptical multistage leaf spring devices 11, a large deformation amount for each of the four elliptical leaf springs 1 is ensured and the vibration cycle is lengthened. The restoration function of the vibration control object 34 can be exhibited while being periodic, and the horizontal one-axis vibration control of the vibration control object 34 can be performed with less friction during deformation as a whole.

  In this case, in the horizontal uniaxial vibration damping device 31, the elliptical leaf springs 1A, 1B, 1C, 1D, and 1E can be adopted instead of the elliptical leaf springs 1 described above. It is also possible to exert effects and effects such as vibration damping, vibration buffering or vibration range regulation corresponding to the above.

  Next, an upper and lower floor seismic isolation device 41 according to Embodiment 5 of the present invention will be described with reference to FIGS.

  In the upper and lower floor seismic isolation device 41 according to the fifth embodiment, a plurality of elliptical multistage leaf spring devices 11 are provided between a base portion (foundation portion) 42 and a floor structure 43 on the base portion 42. The floor structure 43 is vertically arranged with an interval so as to perform vertical seismic isolation.

  The floor structure 43 includes a horizontal frame 44 made of H-shaped steel, a large number of columns 45 standing vertically on the frame 44, and a large number of floors laid horizontally on the column 45. A panel 46. In addition, as shown in FIG. 18, FIG. 19, it can also be set as the structure which added the attenuation device 35 as needed.

  In the upper and lower floor seismic isolation device 41 according to the fifth embodiment of the present invention, referring to one design example of the elliptical multi-stage leaf spring device 11, the leaf thickness t of the leaf spring materials 2a and 2b is 12 mm, and the leaf width b is 90 mm. The span L between the eyeball-shaped engaging portions 3a and 3b is set to 1200 mm, the bulging dimension (free height) L0 of the center portion of both leaf spring materials 2a and 2b is set to 350 mm, and the spring constant is 9.1 kgf / mm. When a load of 9000 kg is applied at one location, the frequency is 0.5 Hz (2 seconds), the static deflection is about 990 mm, and the elliptical plate spring is a four-stage stack of 2.28 kgf / mm (1), 1 Static deflection per book 990/4 = about 250 mm, and dynamic deflection per book 100/4 = about 25 mm.

  According to the upper and lower floor seismic isolation devices 41 according to the fifth embodiment, in each of the elliptical multi-stage leaf spring devices 11, a large deformation amount for four stages of each of the elliptical leaf springs 1 is ensured and the vibration cycle is lengthened. Thus, the load support function and the restoration function can be exhibited, and the floor structure 43 can be subjected to vertical seismic isolation with less friction during deformation as a whole.

  In this case, in the upper and lower floor seismic isolation device 41, the elliptical leaf springs 1A, 1B, 1C, 1D, and 1E can be adopted instead of the elliptical leaf springs 1 and thereby correspond to each. It is also possible to exert effects and effects such as vibration damping, vibration buffering or vibration range regulation.

  The number of overlapping stages of each elliptical multi-stage leaf spring device 11 in the above-described vertical vibration damping device 21, horizontal uniaxial vibration damping device 31, and upper and lower floor seismic isolation device 41 is not limited to the above-mentioned case, and the vibration damping and seismic isolation object Needless to say, it is possible to optimize vibration control or seismic isolation by changing the size and weight appropriately.

  Further, in the above-described vertical vibration damping device 21, horizontal uniaxial vibration damping device 31, and upper and lower floor seismic isolation device 41, the advantages of employing the elliptical leaf spring unit 1 and the elliptical multistage leaf spring device 11 are comprehensively considered. Then, it has the following various advantages.

  That is, when the elliptical leaf spring 1 is multistaged to form the elliptical multistage leaf spring device 11, friction damping can be expected during operation, and the capacity of the damping device used together can be reduced, thereby reducing the cost.

  Furthermore, when the present invention is considered as a vertical / horizontal vibration damping device, the natural period of the object corresponds to a wide range from about 0.2 seconds to about 6 seconds, but the elliptical multi-stage leaf spring device 11 is adopted. By doing so, it is possible to deal with a wide range of natural periods.

  Furthermore, in the vertical vibration control device 21, the horizontal uniaxial vibration control device 31, and the upper and lower floor vibration isolation device 41, unitization can be easily performed by integrating with a damping device, a guide pin, a stopper, and the like as necessary. It can also be mass-produced.

  The elliptical leaf spring 1 has a vertical vibration damping device 21 and a horizontal uniaxial shaft that can be adapted to various structures by optimally selecting a plate thickness t, a plate width b, a span L, and a bulge L0 at the center of the ellipse. Design and manufacture of the vibration control device 31 or the upper and lower floor seismic isolation device 41 is possible.

  When stability is required during vibration control or isolation, it can be combined with a link mechanism or a guide pin. However, the wind-up stiffness of the leaf spring (perpendicular to the travel direction due to acceleration) The rigidity of the suspension leaf spring with respect to the torsional moment generated around the horizontal axis can also be used, thereby simplifying the structure.

  The elliptical leaf spring 1 does not generate any friction other than internal damping of the material because of its structure, and thus functions from a very small external force.

  FIG. 20 shows an elliptical leaf spring single body 1F which is still another modified example of the elliptical leaf spring single body 1. In addition to the configuration of the elliptical leaf spring single body 1, both leaf spring materials 2a, For example, a stopper 6 including a pair of stopper pieces 5a and 5b is added to the bulging portion in the central portion of 2b in a vertically opposed arrangement, and a leaf spring material is used for the bulging portion in the central portion of both leaf spring materials 2a and 2b. The springs 9a and 9b are added.

  In the case of the elliptical leaf spring unit 1F, when the load is large and the bending becomes large and the rigidity of both leaf spring materials 2a and 2b becomes hard, the amount of bending is reduced by the action of the auxiliary springs 9a and 9b and the rigidity becomes hard. It has the effect of relaxing.

  Even if each of the above-described vertical vibration damping device 21, the horizontal single-axis vibration damping device 31, and the upper and lower floor seismic isolation device 41 is configured using the elliptical leaf spring alone 1F, the same action as described above, The effect can be demonstrated.

  The above-described elliptical leaf springs 1 to 1F can be used not only for the vertical vibration control device 21, the horizontal single-axis vibration control device 31 and the upper and lower floor seismic isolation device 41, but also for a vibration isolation device for a floating slab, for example. Also, when transferring from a normal slab, it is possible to use a spring material with a large plate thickness to increase the rigidity.

  The elliptical multi-stage leaf spring device of the present invention can be widely applied for vibration control and seismic isolation of various objects such as bridges, skyscrapers, residential floors, precision machines, and art objects.

DESCRIPTION OF SYMBOLS 1 Elliptical leaf spring simple substance 1A Elliptical leaf spring simple substance 1B Elliptical leaf spring simple substance 1C Elliptical leaf spring simple substance 1D Elliptical leaf spring simple substance 1E Elliptical leaf spring simple substance 1F Elliptical leaf spring simple substance 2a Leaf spring material 2b Leaf spring material 3a Eyeball-shaped meshing portion 3b Eyeball-shaped meshing portion 4 Damping device 5a Stopper piece 5b Stopper piece 6 Stopper 7 Bolt 8 Nut 9a Auxiliary spring 9b Auxiliary spring 11 Elliptical multistage plate spring device 12 Base frame 13 Load support frame 14 Damping device 15 Guide Pin 16 Spline shaft 17 Nut 21 Vertical vibration damping device 22 Base mount 23 Damping object 24 Lower coupling tool 25 Upper coupling tool 26 Leaf spring coupling tool 27 Oil damper 28 Link mechanism 29 Locking prevention device 31 Horizontal uniaxial damping device 32 Base frame 32a Fixed part 32b Solid Part 33 guide rails 33a guide piece 34 damping object 35 damping device 41 up and down the floor seismic isolation device 42 base 43 floor structure 44 platform 45 struts 46 Floor panel

Claims (12)

  The ends of two rectangular leaf spring members are joined together with their central portions bulging outward to form an elliptical shape, and the amount of deformation in the elliptical short axis direction to which a load is applied is determined by the elliptical long axis direction. An elliptical leaf spring for vibration damping or seismic isolation, characterized in that it is formed several times the amount of deformation.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward An elliptical leaf spring for damping or seismic isolation, characterized in that the amount of deformation is formed to be several times the amount of deformation in the elliptical long axis direction.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward Is formed several times as large as the amount of deformation in the elliptical long axis direction, and an additional element selected from a damping device, a buffer, or a stopper is provided in the bulging region at the center formed by the two leaf spring materials. An elliptical leaf spring unit for vibration control or seismic isolation characterized by being arranged.   The ends of two rectangular leaf spring members are joined together with their central portions bulging outward to form an elliptical shape, and the amount of deformation in the elliptical short axis direction to which a load is applied is determined by the elliptical long axis direction. The elliptical leaf springs formed several times the deformation amount of the above are stacked in multiple stages so that the load acts in the elliptical short axis direction between the base frame and the load support frame, and the deformation amount in the elliptical short axis direction is reduced. An elliptical multistage leaf spring device for vibration control or seismic isolation characterized by being increased by the number of steps.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward The elliptical leaf spring, which has a deformation amount of several times the deformation amount in the elliptical long axis direction, is stacked in multiple stages so that the load acts in the elliptical short axis direction between the base frame and the load support frame. An elliptical multistage leaf spring device for vibration control or seismic isolation, wherein the amount of deformation in the elliptical minor axis direction is increased by the number of steps.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward Is formed several times as large as the amount of deformation in the elliptical long axis direction, and an additional element selected from a damping device, a buffer, or a stopper is provided in the bulging region at the center formed by the two leaf spring materials. The arranged elliptical leaf springs are stacked in multiple stages so that the load acts in the elliptical short axis direction between the base frame and the load support frame, and the deformation amount in the elliptical short axis direction is increased by the number of steps. An elliptical multi-stage leaf spring device for vibration control or seismic isolation.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward The amount of deformation in the elliptical long axis direction is several times the amount of deformation in the elliptical long axis direction, and the elliptical leaf springs are stacked in multiple stages so that a load acts on the elliptical short axis direction. A plurality of the increased elliptical multi-stage leaf spring devices are arranged side by side between the base frame and the vibration control object, and are configured to perform vertical vibration control of the vibration control object. Shaker.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward Is formed several times as large as the amount of deformation in the elliptical long axis direction, and an additional element selected from a damping device, a buffer, or a stopper is provided in the bulging region at the center formed by the two leaf spring materials. The arranged elliptical leaf springs are stacked in multiple stages so that the load acts in the elliptical short axis direction, and the elliptical multistage leaf spring device with the deformation amount in the elliptical short axis direction increased by the number of stages A vertical vibration control device, wherein a plurality of the vibration control objects are arranged side by side and configured to perform vertical vibration control of the vibration control object.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward The amount of deformation in the elliptical long axis direction is several times the amount of deformation in the elliptical long axis direction, and the elliptical leaf springs are stacked in multiple stages so that a load acts on the elliptical short axis direction. Between the pair of fixed parts arranged at both ends of the base gantry with the increased elliptical multi-stage leaf spring device and the both sides of the vibration control object arranged on the base gantry and guided by the guide rail so as to be horizontally movable The horizontal uniaxial vibration damping device is configured to perform horizontal uniaxial vibration damping on the object to be damped.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward Is formed several times as large as the amount of deformation in the elliptical long axis direction, and an additional element selected from a damping device, a buffer, or a stopper is provided in the bulging region at the center formed by the two leaf spring materials. The arranged elliptical leaf springs are stacked in multiple stages so that a load acts in the minor axis direction of the ellipse, and the elliptical multistage leaf spring device with the deformation amount in the minor axis direction is increased by the number of steps, at both ends of the base frame. It arrange | positions between a pair of arrangement | positioning fixed part, and the both sides | surfaces of the vibration suppression object arrange | positioned so that it may be horizontally moved guided by a guide rail on a base stand, respectively, and horizontal 1 axis vibration suppression of the said vibration suppression object Water that is configured to perform Uniaxial vibration damping device.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward The amount of deformation in the elliptical long axis direction is several times the amount of deformation in the elliptical long axis direction, and the elliptical leaf springs are stacked in multiple stages so that a load acts on the elliptical short axis direction. A plurality of the increased elliptical multi-stage leaf spring devices are arranged between the base portion and the floor structure on the base portion, and are configured to perform vertical isolation of the floor structure. Upper and lower floor seismic isolation device.   Ellipse short axis direction to which load is applied by connecting both ends of two rectangular leaf spring materials into an elliptical shape by connecting them in the form of eyeballs or with bolting in the state where each central part is expanded outward Is formed several times as large as the amount of deformation in the elliptical long axis direction, and an additional element selected from a damping device, a buffer, or a stopper is provided in the bulging region at the center formed by the two leaf spring materials. The arranged elliptical leaf springs are stacked in multiple stages so that the load acts in the elliptical short axis direction, and the elliptical multistage leaf spring device in which the deformation amount in the elliptical short axis direction is increased by the number of steps is divided into the base part and this base. An upper and lower floor seismic isolation device, wherein a plurality of floor seismic isolation devices are arranged between the upper floor structure and the floor structure.

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