JP2001280413A - Guide apparatus with damping capacity and vibration isolator using this guide apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple and inexpensive guide apparatus with a damping capacity that does not need a space to install a damping apparatus, and provide a vibration isolator using this guide apparatus. SOLUTION: The guide apparatus has a track rail 142, a traveling block 141 traveling along the track rail 142, the rolling contact paths for rolling elements set over the both sides of the track rail 142 and the traveling block 141, and multiple rolling elements rolling in the grooves. The track rail 142 comprises a groove 1 grooved along the longitudinal direction on the top of the rail 142, multiple wedge-shaped holes 2 set in the groove 1, and multiple wedge-shaped materials 4 to be fit in the wedge-shaped holes 2. As the wedge- shaped materials 4 are fit in the wedged-shaped holes 2, the distance between the bilateral rolling elements in the track rail 142 can be widen. Accordingly, as the rolling contact paths are relatively narrowed, the guide apparatus can increase the traveling resistance of the travelling block 141 and concurrently damp the traveling force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track rail, a moving block moving along the track rail, rolling element rolling paths provided on both sides of the track rail and the moving block, The present invention relates to a guide device having a plurality of rolling elements rolling in a moving body rolling path, and more particularly to a guide device with an attenuation function for attenuating the moving force of a moving block. The present invention also relates to a seismic isolation device for a building, and more particularly to a seismic isolation device using a guide device with a damping function that can simplify the structure without requiring any other damping device.

[0002]

2. Description of the Related Art Conventionally, there is a building adopting a seismic isolation structure in which special consideration is given to the effect of seismic motion in order to minimize its influence. Some have incorporated seismic isolation devices to minimize the forces transmitted to structures by earthquakes.

[0003] For example, FIG. 13 shows a seismic isolation device using a conventional seismic isolation linear guide device 1. Four seismic isolation linear guide devices 1 are provided on a substrate 2. Each seismic isolation linear guide device 1 includes a pair of upper and lower linear guide devices 1A,
1B. The lower linear guide device 1A includes a substrate 2
It comprises a track rail 3 fixed above and a moving block 4 provided on the track rail 3 so as to be movable in its longitudinal direction. The upper linear guide device 1B comprises a track rail 5 and a moving block 6 movably provided on the track rail 5 (Japanese Patent Laid-Open No. 1-259).
No. 30).

In the seismic isolation device having the above structure, the moving block 4 of each linear guide device 1 for seismic isolation can move in the X direction horizontal to the substrate 2 and the moving block 6 can move in the Y direction. . Therefore, even if the substrate 2 moves in the X and Y directions, the article (not shown) supported by the moving block 6 maintains a substantially constant position, and the vibration is hardly transmitted.

When the conventional seismic isolation linear guide device 1 is used, a damping device is separately provided. For example,
In the case of the one shown in FIG. 13, the substrate 2 is stacked between the substrate 2 and a mounting plate (not shown; articles are mounted on the mounting plate) supported by the four moving blocks 6. A damping device including a damping member 7 made of rubber or the like is provided.

[0006]

However, if a damping device is separately provided, (1) the structure of the seismic isolation device becomes complicated, so that extra work such as installation work is required and the work efficiency is reduced.
(2) The cost of the damping device is added, and the seismic isolation device becomes expensive. (3) A space with a damping device is required, and a large mounting space is required. (4) The damping device must keep its damping characteristics constant over a long period of time as long as the building is in use, causing problems such as requiring maintenance.

[0007] The linear guide device 1 for seismic isolation and the damping member 7 made of rubber for the whole building are affected by the coefficient of friction in the horizontal direction with respect to the substrate 2, that is, the seismic isolation capability. Due to the variation, the degree of freedom in designing the seismic isolation linear guide device 1 and the building is greatly restricted. Moreover, in the case of a large earthquake, the damping effect of the damping member 7 becomes excessive, and the seismic isolation effect of the seismic isolation linear guide device 1 may be reduced.

By the way, the width of the track rail in both end directions is made larger than the width of the center position, and the rolling element rolling path sandwiching the rolling elements (rollers and balls) provided between the track rail and the moving block is moved from the center position. Make it narrower toward both ends,
It is conceivable to cause frictional resistance to the rollers and balls to attenuate the moving force of the moving block and to provide the track rail itself with a damping function.

However, if the width of the track rail in both ends is large, the moving block cannot be assembled from both ends of the track rail. In this case, it is necessary to perform a troublesome operation such as cutting the center portion of the track rail, assembling the moving block from the center portion, and then connecting the track rail, which causes a decrease in work efficiency and an anxiety about the strength of the track rail.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and does not require a mounting space for a damping device, has a simple structure, is inexpensive, and has a simple structure. It is a technical task to provide a seismic device.

[0011]

Means for Solving the Problems To solve the above problems, a guide device with a damping function of the present invention and a seismic isolation device using this device employ the following means. That is, the guide device with a damping function according to claim 1 of the present invention includes a track rail, a moving block that moves along the track rail,
In a guide device including: a rolling element rolling path provided on both sides of the track rail and the moving block; and a number of rolling elements rolling in the rolling element rolling path, the guide device includes: A groove drilled in the surface along the longitudinal direction,
A plurality of wedge-shaped holes provided in the groove; and a plurality of wedge-shaped members which are wedge-fitted to the plurality of wedge-shaped holes, and the plurality of wedge-shaped members are wedge-fitted to the plurality of wedge-shaped holes. This increases the distance between the rolling grooves of the track rail between the rolling elements, relatively narrows the rolling element rolling paths, increases the moving resistance of the moving block, and attenuates the moving force. It is characterized by the following.

According to the first aspect of the present invention, a plurality of wedge-shaped members are wedge-fitted to the plurality of wedge-fitting holes, so that a cross-sectional shape of the track rail is set to a desired size at a desired position along the track rail. The distance between the rolling grooves sandwiching the rolling elements can be adjusted, and the distance between the rolling grooves can be arbitrarily set. When the rolling element rolling path becomes relatively narrow and the preload of the rolling element increases, the rolling resistance of the rolling element increases, and when a ball is used as the rolling element, the rolling element rolling path of each part of the ball is used. , The resistance due to the differential slip caused by the difference in the radius of gyration increases, and the moving resistance of the moving block on the track rail increases. Therefore, the moving force of the moving block is attenuated.

As described above, when a ball is used as a rolling element, the shape of the rolling element rolling path on which the ball rolls is a circular shape having a radius substantially equal to the radius of the ball, and a radius of the ball. Gothic arch shape consisting of two arcs larger than the dimension can be adopted. At this time, when comparing the circular shape and the Gothic arch shape, the Gothic arch shape has a larger differential sliding amount with respect to the ball rolling groove of the ball generated by the same preload than the circular ball rolling groove. The degree of change in the movement resistance of the movement block is large.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, in addition to the configuration of the first aspect, the depth at which the plurality of wedge-shaped members are wedged is set at both ends from the center position of the track rail. The distance between the rolling grooves sandwiched by the rolling elements is continuously changed along the axial direction so that both ends are larger than the center position in the axial direction. The moving resistance of the moving block becomes greater than the center position when the moving block moves in both directions from the center position, thereby attenuating the moving force of the moving block.

According to the second aspect of the present invention, in addition to the above-described operation of the first aspect, when the moving block is located at the center of the track rail, the distance between the rolling grooves sandwiching the rolling elements is reduced. Since the preload of the rolling elements remains constant, the moving resistance of the moving block is small. When the moving block moves from the center to the end of the track rail, the interval between the rolling element rolling paths becomes relatively narrow, and the preload on the rolling elements becomes larger than in the center. And when the preload of the rolling element increases,
The rolling resistance of the rolling elements increases, and damping force is generated. Therefore, the structure of claim 2 can be used as a seismic isolation device for a building. It can also be used as a shock absorber when stopping near the end. According to the second aspect of the present invention, since the distance between the rolling grooves can be largely adjusted after the moving block is assembled to the track rail, a troublesome operation such as cutting or joining the track rail is not required. .

Further, in the guide device with a damping function according to a third aspect of the present invention, the track rail has a structure in which a top surface is formed linearly along a longitudinal direction, or has a predetermined curvature in a vertical direction. One formed in an arc shape can be exemplified.

In the guide device with a damping function according to a fourth aspect of the present invention, the wedge-fitting hole is formed in a tapered female screw, and the wedge-shaped member is formed in a tapered screw. The threaded engagement of the plurality of tapered screws changes the distance between the rolling grooves sandwiched between the rolling elements.

According to the structure of the fourth aspect, in addition to the above-described functions of the first to third aspects, by a simple operation such as screwing a screw between the rolling grooves sandwiching the rolling element. The work of arbitrarily adjusting the interval size can be easily performed.

Furthermore, a seismic isolation device using a guide device with a damping function according to claim 5 of the present invention is a seismic isolation device using a guide device with a damping function incorporated between the ground and a building. A guide rail with a damping function, a track rail, a moving block moving along the track rail, rolling element rolling paths provided on both sides of the track rail and the moving block, A large number of rolling elements rolling in the motion path, a groove formed in the top surface of the track rail along the longitudinal direction, a plurality of wedge holes provided in the groove, and the plurality of wedge holes A plurality of wedge-shaped members to wedge the
The depth at which the plurality of wedge-shaped members are wedged is increased from the center position of the track rail toward both ends, and the interval between the rolling grooves sandwiched by the rolling elements is set at the center along the axial direction. The rolling guide is continuously changed so that both end directions are larger than the position, and the rolling element rolling path is relatively narrowed to increase the moving resistance of the moving block and attenuate the moving force. At least two devices are crossed, and the track rail or the moving block of the guide device with one damping function and the track rail or the moving block of the guide device with the other damping function are connected and fixed. I do.

According to the fifth aspect of the present invention, the guide devices with the damping function are overlapped with each other in a direction crossing each other, and make a plane or three-dimensional movement combining the two moving directions. In any direction, the vibration of the building can be reduced and attenuated in any direction by overlapping the moving directions of the two intersecting moving guide devices.

According to the fifth aspect of the present invention, the ground vibration is substantially insulated by the seismic isolation device during an earthquake, and is not directly transmitted to the building. The building vibrates due to the friction of the guide device, but vibrates at an amplitude smaller than the amplitude of the seismic wave. Therefore, the amplitude and acceleration of the building are smaller than the amplitude and acceleration of the ground, and no destructive vibration is applied to the building.

According to this configuration, the shape of the track rail is changed in the axial direction, so that the rolling element transfer resistance is set to a predetermined value when the moving block is at the center position, and the moving block is moved from the center position to both ends. The movement resistance of the moving block when moving in any of the directions is set to be larger than the value at the center position. Therefore, when the moving block vibrates from the center position to both ends along the track rail due to the vibration of the building, the resistance at the time of moving the moving block, that is, the elastic deformation of the rolling elements and the track rail, the rolling friction, etc. The vibration energy is released as heat energy to the atmosphere and the ground, and the vibration of the building is attenuated by the guide device itself.

That is, the guide device with the damping function functions not only as a guide device but also as a damper device (damper). Therefore, it is not necessary to separately provide a damping device in the seismic isolation device using the guide device with the damping function of the present invention, and the vibration of the building can be damped by itself.

Further, in the seismic isolation device using the guide device with a damping function according to the fifth aspect, the track rail having the top surface of the track rail formed in an arc shape having a predetermined curvature in the vertical direction is formed by the ground and the building. When the moving block moves to a position off the center of the track rail, the moving block is always at a higher position than the center of the track rail, so the force that returns to a lower position due to gravity acts as a restoring force. Then, it can return to the center of the original track rail.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a guide device with a damping function according to a first embodiment of the present invention will be described in detail with reference to FIGS. [Structure of guide device with damping function] As shown in FIG. 1, the guide device with damping function according to the first embodiment of the present invention includes a track rail 142 and a moving block 141 moving along the track rail 142. It has. A large number of balls (rolling elements) B are provided between the track rail 142 and the moving block 141 so as to freely roll.

The track rail 142 has a substantially rectangular cross section. Left and right side surfaces 142c, 1 of the track rail 142
A pair of upper and lower ball rolling grooves 143 and 144 are formed in 42d along the longitudinal direction.

The moving block 141 includes a connecting portion 145 and a pair of left and right sleeve portions 14 suspended downward from both sides thereof.
6, 147, and a concave portion on the lower surface side. A pair of upper and lower ball rolling grooves 1 are formed in both sleeve portions 146 and 147 of the moving block 141 at positions corresponding to the ball rolling grooves 143 and 144 of the track rail 142 along the longitudinal direction.
48, 149 are formed.

The moving block 141 has a pair of upper and lower unloaded ball holes 150 and 151 adjacent to and corresponding to the pair of upper and lower ball rolling grooves 148 and 149. Is formed. The front and rear end surfaces of the moving block 141 are provided with ball rolling grooves 14 on the inner surface side.
Cover strips 152 and 152 having ball direction changing passages that connect the end portions of the unloaded ball holes 150 and 151 to each other to form an endless circulation passage are attached. Then, a large number of balls B circulate in each endless circulation passage, and the ball rolling grooves 143, 144 of the track rail 142.
The load is transferred while the load is applied between the ball rolling grooves 148 and 149 of the moving block 141.

Ball rolling grooves 143, 144, 148, 1
Numeral 49 is a circular groove whose cross-sectional shape is formed as a single arc having a radius larger than the ball radius, and is formed into a curved surface, and ball rolling grooves 143, 144, 148, and 14 are provided.
No. 9 has only one contact surface on which the ball B makes contact rolling.

The track rail 142 will be further described. In the center of the top surface of the track rail 142, the groove 11 is formed along the longitudinal direction.
Are drilled. A plurality of tapered female threads (wedge holes) 12 are threaded into the groove 11 in a direction perpendicular to the top surface of the track rail 142. The track rail 142 is provided with a plurality of mounting holes 13 for mounting the track rail 142 to another member in a direction perpendicular to the top surface.
As shown in FIG. 3, the plurality of tapered female screws 12 are threaded at predetermined intervals along the longitudinal direction, avoiding the positions where the mounting holes 13 are formed.

FIG. 4A shows a plurality of tapered female screws 12.
Are screwed (wedge-fitted). The tapered screw 14 has an outer diameter of 9.728 mm and a height of 7 mm. The inclination of the tapered screw 14 is shown in FIG.
As shown in the figure, it is about 4.764 °.

Then, the tapered screw 1 is
As the screw 4 is screwed in, the track rail 142 opens on both sides according to the tightening amount (screw depth), and the rolling surface pitch (interval dimension) between the pair of upper and lower ball rolling grooves 143 and 144 changes. That is, the taper screw 14 is
2 Screw up to the same position as the top surface (see FIG. 5 (a)), then screw up to a position 1.2mm from the top surface of the track rail 142 (see FIG. 5 (b)). 2.4mm
(See FIG. 5C), the distance between the ball rolling grooves 143 and 144 changes as shown by the two-dot chain line in FIG. FIG. 7 shows the tightening amount (screw depth) and the opening of the rail.
When screwed up to the same position as the top surface of the track rail 42 (see FIG. 5A), when screwed up to a position 1.2 mm from the top surface of the track rail 142 (see FIG. 5B), The table shows a case where the screw is screwed to the position of 2.4 mm (see FIG. 5C).

[Operation of Guide Device with Damping Function] FIG. 8 shows that the amount of tightening of the taper screw 14 with the tapered female screw 12 (the depth into which the taper screw 14 is screwed) is increased from the center of the track rail 142 toward the end face. The case is indicated by a two-dot chain line. As shown in FIG. 8, the cross-sectional shape of the track rail 142 can be continuously adjusted along the axial direction so that both end directions are larger than the center position by the amount of tightening of the taper screw 14.

Then, since the ball rolling grooves 148 and 149 on the moving block 141 side have no change in dimensions, when the moving block 141 moves from the center position of the track rail 142 toward both ends, the ball rolling grooves 148 and 149 will not move. And the distance between the ball rolling grooves 143 and 144 change. The movement resistance of the ball B contacting and rolling between the ball rolling grooves increases toward both ends from the center position. Therefore, the moving block 141 obtains a damping force from the center position toward both ends.

The moving block 1 is mounted on the track rail 142.
By adjusting the amount of tightening (screw depth) of the tapered screw 14 after incorporating the 41, the distance between the ball rolling grooves can be easily changed. Therefore,
After the moving block 141 is incorporated into the track rail 142, the distance between the ball rolling grooves can be adjusted to a predetermined size, for example, by increasing the distance between the ball rolling grooves. Unnecessary work becomes unnecessary.

The guide device with a damping function according to the first embodiment of the present invention has a structure in which a damping force is generated as the moving block 141 moves toward both ends, so that it is also used as a shock absorber when stopping near the end. be able to.

In the first embodiment, the track rail 14
Although the description has been made assuming that the top surface of No. 2 is formed linearly along the longitudinal direction, the guide device with a damping function of the present invention includes a track rail in which the top surface of the track rail is formed in an arc shape.

Next, a guide device with a damping function (hereinafter, referred to as a curved guide device) having an arc-shaped track rail will be described as a second embodiment. Note that the difference between the second embodiment and the first embodiment is only the difference between whether the top surface of the track rail is arc-shaped or straight, and a description of the moving block and the like is omitted.

The track rail 172, as shown in FIG.
The track rail 172 is formed in a substantially rectangular cross section, and the top surface of the track rail 172 is formed in an arc shape with a curvature R in the vertical direction. Also, the left and right side surfaces 172c, 1 of the track rail 172
A pair of upper and lower ball rolling grooves 173 and 174 are formed in 72d along the longitudinal direction. In addition, track rail 1
At the center of the top surface of 72, a groove 11a is formed in the longitudinal direction.

In the groove 11a, a plurality of tapered female threads 12a are screwed in a direction perpendicular to the top surface of the track rail 172. The track rail 172 is provided with a plurality of mounting holes 13a for mounting the track rail 172 to another member in a direction perpendicular to the top surface. The plurality of tapered female screws 12a are threaded at predetermined intervals along the longitudinal direction, avoiding the positions where the mounting holes 13a are formed. The tapered screw 14 described in the first embodiment is screwed to the plurality of tapered female screws 12a.

Next, a seismic isolation device using a guide device with a damping function according to Embodiment 3 of the present invention (hereinafter referred to as a seismic isolation device)
Will be described with reference to FIGS. 10 and 11. [Structure of Seismic Isolation Device According to Third Embodiment] A plurality of (four in FIG. 10) seismic isolation devices 33 of the present invention are provided between the building 31 and the ground 32, as shown in FIG. The vibration of the building 31 due to the earthquake is reduced, and the building 31 declines. The seismic isolation device is a guide device with an upper and lower damping function (hereinafter referred to as a lower guide device 1
By virtue of the combination of the linear guide of the upper guide device 40 and the upper guide device 160), it vibrates on a predetermined plane.

Each of the seismic isolation devices 33 includes a lower guide device 140 attached to the ground 32 and the lower guide device 14.
An upper guide device 160 attached to the building 31 in a direction intersecting with zero is provided to perform vibration isolation and attenuation in all directions on the horizontal plane. The installation location of each seismic isolation device 33 is determined for each building in consideration of the vibration characteristics and the like of the building.

Further, the seismic isolation device 33 will be described in detail.
As shown in FIG. 11, a lower guide device 140 fixed to the ground 32 side, and an upper side having a motion plane disposed above the lower guide device 140 and intersecting at a right angle with the motion plane of the lower guide device 140 And a guide device 160.

In the third embodiment, the lower guide device 1
The moving block 141 of the forty and the moving block 161 of the upper guide device 160 are connected and fixed. The lower guide device 140 and the upper guide device 160 have the same configuration and are vertically symmetrical.

Lower guide device 140 and upper guide device 160
Is the guide device with the damping function described in the first embodiment,
The description of the structure and operation of the groove 11, the tapered female screw 12, the tapered screw 14, and the like will be omitted. Also, the lower guide device 1
Since the upper guide device 160 and the upper guide device 160 have the same configuration, the lower guide device 140 will be illustrated and described. The reference numerals in parentheses indicate the reference numerals and descriptions of the respective components of the upper guide device 160.

Lower (upper) guide device 140 (160)
Are the track rail 142 (162) and the track rail 142
(162) a moving block 141 having an infinite ball circulation path slidably supported via a number of balls B;
(161).

The track rail 142 (162) has a substantially rectangular cross section. Then, in the seismic isolation device of the third embodiment, after the moving block 141 (161) is incorporated into the track rail 142 (162), the amount of tightening (the screw-in depth) of the taper screw 14 is adjusted to thereby improve the track. The cross-sectional shape of the rail 142 (162) is the track rail 1
The distance between the track rails 142 (162) sandwiched by the balls B, which are rolling elements, is wider at both ends than at the center of the track 42 (162) in the track axis direction. Thus, when the moving block 141 (162) is at the center position of the track rail 142 (162), the moving resistance is set to a predetermined value and the moving block 141
When (161) moves from the center position, the movement resistance of the moving block 141 (161) becomes larger than the center position.

That is, in the third embodiment, as shown in FIG. 2, the track rail 142 (162) is formed on the left and right side surfaces 142c (162) of the track rail 142 (162).
c), an interval W between the pair of upper and lower ball rolling grooves 143, 144 (163, 164) provided in the upper and lower ball rolling grooves 142d (162d) is set to a predetermined interval (W) at the center in the longitudinal direction of the rail. = W) and the track rail 142
At both ends of (162), the distance is continuously increased so as to have an interval dimension (W = w + δw) increased by a predetermined increase value (δw) from the predetermined value.

In this case, the ball B is in the ball rolling groove 1
The size of the track rail 142 (162) sandwiched in the width direction while rolling the 43, 144 (163, 164) increases toward both ends as compared to the center of the track rail 142 (162), and moves. As the block 141 (161) moves from the center of the track rail 142 (162) to both ends, the preload on the ball B is increased by the track rail 142 (16).
The movement resistance of the moving block 141 (161) increases toward both ends as compared with the center, and the movement resistance of the movement block 141 (161) increases toward the both ends as compared with the center.

When the moving block 141 (161) moves, the resistance of the moving block 141 (161) when moving, that is, the rolling element and the track rail 142 (16).
Due to the elastic deformation and rolling friction of 2), the energy of the vibration of the building 31 is released as heat energy to the atmosphere and the ground 32, and the vibration of the building 31 is transmitted to the guide device 140 (160).
Attenuated by itself.

The magnitude of the increase amount δw and the characteristics of the increase are determined by the required size of the seismic isolation device, the attenuation characteristics, and the like. Then, the tightening amount (screw depth) of the tapered screw 14 may be adjusted according to the magnitude of the increase amount δw.

As described above, each of the seismic isolation devices 33 can reduce the vibration of the ground 32 while keeping the building 31 in a horizontal state, and can attenuate the vibration.

Therefore, according to the seismic isolation device of the third embodiment, the guide devices 140 and 160 themselves can be provided with a damping function, and it is not necessary to provide the seismic isolation device with another damping mechanism.

The rail 142 (162) between the rolling elements
The desired attenuation characteristic can be obtained by adjusting the amount of increase (δw) of the interval dimension (W) and the increase characteristic of the taper screw 14 by adjusting the tightening amount (screw depth) of the tapered screw 14.

Therefore, no matter what direction the ground 32 vibrates due to the earthquake, the two intersecting movement guide devices 140, 1
The superposition of the 60 moving directions reduces vibration while keeping the building 31 horizontal in any direction,
Further, vibration can be attenuated.

In the third embodiment, the guide device for the upper and lower parts of the seismic isolation device for a building has been described as a guide device in which the track rails have a linear shape in the longitudinal direction. One or both of the devices can be configured as curved guide devices in which the longitudinal track rails are formed in a circular arc with a predetermined curvature in the vertical direction.

[Structure of Seismic Isolation Device According to Fourth Embodiment] Next, a seismic isolation device 33a according to a fourth embodiment of the present invention is shown in FIG.
2 will be described. Seismic isolation device 33a according to the fourth embodiment
Also, as shown in FIG. 10, a plurality of (four) units are provided between the building 31 and the ground 32 to reduce the vibration of the building 31 due to the earthquake and to decline. The seismic isolation device 33a is configured to vibrate on a predetermined curved surface by a combination of curved guides of an upper and lower curve guide device (hereinafter, referred to as a lower curve guide device 170 or an upper curve guide device 180).

Each seismic isolation device 33a includes a lower curve guide device 170 attached to the ground 32, and an upper curve guide device 180 attached to the building 31 in a direction crossing the lower curve guide device 170. It performs vibration isolation and damping in all directions on the horizontal plane.

Further, between the lower curve guide device 170 and the upper curve guide device 180 of the seismic isolation device 33a, there is provided a tilt absorbing member 190 which allows a tilt with respect to the building 31. As the tilt absorbing member 190, a member formed of a spherical joint, a universal joint, an elastic body such as rubber, or the like can be used. The installation location of each seismic isolation device 33 is determined for each building in consideration of the vibration characteristics and the like of the building.

By providing the inclination absorbing member 190, rotation between the upper and lower curve guide devices 170, 180 can be prevented, and the upper and lower curve guide devices 170, 1 can be prevented.
The positions can be mutually changed between 80, and the upper and lower moving blocks can be securely connected without being separated.

The lower curve guide device 170 is connected to the ground 32
Is disposed on the upper side of the base 110 fixed to the lower curve guide device 170, and is disposed above the lower curve guide device 170.
The upper curve guide device 180 is located between the lower curve guide device 170 and the upper curve guide device 180 having a motion plane that intersects at right angles to the motion plane of the lower curve guide device 1.
Connecting member 1 for connecting 70 to upper curve guide device 180
90 and the building 31 fixed on the upper curve guide device 180
And a moving table 120 on which is mounted.

The lower curve guide device 170 and the upper curve guide device 180 have the same configuration and are vertically symmetrical, and have a configuration in which moving blocks 171 and 181 are connected to each other via a coupling member 190. ing.

Since the lower curve guide device 170 and the upper curve guide device 180 have the same structure, the lower curve guide device 1
Although 70 is illustrated and described, reference numerals in parentheses indicate reference numerals and descriptions of respective components of the upper curve guide device 180.

The lower (upper) curve guide device 170 (18)
0) is the track rail 172 (182) and the track rail 1
72 (182), a moving block 17 having an infinite ball circulation path slidably supported via a number of balls B.
1 (181). The track rail 172
(182) is the same as that of the second embodiment (see FIG. 9), and its description is omitted.

In the seismic isolation device 33a according to the fourth embodiment, similarly to the above-described embodiment, after the moving block 171 (181) is incorporated into the track rail 172 (182), the amount of tightening of the taper screw 14 (screw-in). By adjusting the (depth), the cross-sectional shape of the track rail 172 (182) becomes
In both ends of the track rail 172 (182) in the track axis direction, the distance between the track rails 172 (182) sandwiched by the balls B as the rolling elements is formed wider. Thereby, the moving block 171 (18
When 2) is at the center position of the track rail 172 (182), the movement resistance is predetermined, and when the movement block 171 (181) moves from the center position, the movement resistance of the movement block 171 (181) is increased. Is larger than the center position.

That is, also in the fourth embodiment, the track rail 172 (182) has a distance W between the rail widths of a pair of upper and lower ball rolling grooves provided on the left and right sides of the track rail 172 (182). A predetermined interval dimension (W = w) is set at the center in the length direction of the rail, and the track rail 172 is used.
At both ends of (182), the distance is continuously increased so as to have an interval dimension (W = w + δw) increased by a predetermined increase value (δw) from the predetermined value.

Therefore, the seismic isolation device 33 of the fourth embodiment
According to a, the following operation and effect are obtained in addition to the operation and effect of the third embodiment. That is, when the ground 32 shakes, the moving block 171 (181) moves the track rail 172 (18).
Move to a position off the center of 2). Then, the moving block 171 (181) always moves the track rail 172 (18).
Since the position is higher than the center of 2), the force returning to the lower position in the shape of an arc acts as a restoring force due to gravity, and can return to the center of the original track rail 172 (182).

In the above embodiment, the cross-sectional shape of the ball rolling groove has been described as a circular shape having substantially the same diameter as the diameter of the ball. Gothic arch shape consisting of two circular arcs. When the cross-sectional shape of the ball rolling groove is a Gothic arch shape, the degree of change in resistance to a change in the dimension between the track rails sandwiched by the balls is greater than when the ball rolling groove has a circular shape.

Further, in the above embodiment, the ball is described as an example of the rolling element, but a roller can be used as the rolling element.

[0070]

As described above, the present invention has the following configuration and operation, and therefore has the following effects.

According to the first aspect of the present invention, a plurality of wedge-shaped members are wedge-fitted to the plurality of wedge-shaped holes, so that the cross-sectional shape of the track rail is set to a desired size at a desired position along the track rail. It can be adjusted, the distance between the rolling grooves sandwiching the rolling elements can be arbitrarily set, and the moving force of the moving block can be attenuated at a desired position along the track rail.

According to the second aspect of the present invention, when the moving block moves from the center to the end of the track rail, the rolling resistance of the rolling elements increases, and a damping force is generated. When used as, a damping function can be performed. It can also be used as a shock absorber when stopping near the end. And claim 2
With the configuration described, after the moving block is assembled to the track rail, it can be adjusted to a desired size, for example, by increasing the distance between the rolling grooves, so that it is troublesome to cut or join the track rail as conventionally performed. Unnecessary work becomes unnecessary.

According to the fourth aspect of the invention, the operation of arbitrarily adjusting the interval between the rolling grooves sandwiching the rolling elements can be easily performed by a simple operation such as screwing a taper screw.

According to the fifth aspect of the present invention, even if the ground vibrates in any direction due to the earthquake, the building can be moved in any direction by overlapping the moving directions of the two intersecting moving guide devices. Vibration can be reduced and the vibration can be attenuated.

That is, the invention according to claim 5 functions as a guide device and also functions as a damping device (damper). Therefore, it is not necessary to provide a damping device as another device in the seismic isolation device of the present invention, and the installation space is small and the cost is not increased.

According to the fifth aspect of the present invention, the damping force can be adjusted by adjusting the wedge depth of the wedge-shaped member, so that the vibration characteristics depending on the natural frequency and direction of the building and the directional characteristics of the seismic wave can be improved. By appropriately adjusting the damping force and combining the widths of the cross-sectional shapes of the track rails, appropriate measures can be taken.

Further, in the seismic isolation device using the guide device with a damping function according to the fifth aspect, the track rail having the top surface of the track rail formed in the shape of an arc having a predetermined curvature in the vertical direction is connected to the ground and the building. When the moving block moves to a position off the center of the track rail, the moving block is always at a higher position than the center of the track rail, so the force that returns to a lower position due to gravity acts as a restoring force. Then, it can return to the center of the original track rail.

[Brief description of the drawings]

FIG. 1 is a perspective view of a guide device with a damping function according to Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view of the guide device with a damping function according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a track rail.

FIG. 4 is an explanatory view of a tapered screw. FIG. 4 (a) shows an external view of the tapered screw, and FIG. 4 (b) shows the inclination of the tapered screw.

FIG. 5 is a cross-sectional view of the track rail. FIG. 5 (a) shows a case where a tapered screw is screwed to the same position as the track rail top surface, and FIG. FIG. 5 (c) shows a case where the screw is screwed to a position 2.4 mm from the track rail top surface.

FIG. 6 is a cross-sectional view of the track rail, showing the opening of the rail when tightened.

FIG. 7 is a table showing a relationship between a tightening amount (screw-in depth) and a rail opening;

FIG. 8 is a plan view of the track rail, showing a state in which the amount of tightening of the taper screw is increased from the center to both ends.

FIG. 9 is a perspective view of a track rail according to another embodiment 2.

FIG. 10 is a schematic diagram of a seismic isolation device according to Embodiment 3 of the present invention.

FIG. 11 is an enlarged schematic view of the seismic isolation device according to Embodiment 3 of the present invention.

FIG. 12 is an enlarged schematic view of a seismic isolation device according to another embodiment 4.

FIG. 13 is a schematic view of a conventional seismic isolation device.

[Explanation of symbols]

 11, 11a ... groove 12, 12a ... taper female screw (wedge attachment hole) 13, 13a ... mounting hole 14 ... taper screw (wedge-shaped member) 31 ... building 32 ... ground 33, 33a ... seismic isolation device 110 ... board 120 ... Moving table 140 Lower guide device 141,161 Moving block 142,162 Track rail 143,144,148,149 Ball rolling groove 160 Upper guide device 170 Lower curve guide device 172,182 Track rail 173, 174: ball rolling groove 180: upper curved guide device 190: inclination absorbing member B: ball (rolling element)

Claims (5)

[Claims] A track rail, a moving block moving along the track rail, and rolling element rolling paths provided on both sides of the track rail and the moving block;
A plurality of rolling elements rolling in the rolling element rolling path, a groove formed in the top surface of the track rail along the longitudinal direction, and a plurality of grooves provided in the groove. A wedge hole; and a plurality of wedge-shaped members that wedge the plurality of wedge holes. The wedge-shaped members are wedge-fitted to the plurality of wedge holes. A damping function characterized by increasing the distance between the rolling grooves sandwiched by the rolling elements, relatively narrowing the rolling element rolling paths to increase the moving resistance of the moving block, and attenuating the moving force. Guide device. 2. A wedge-shaped depth of the plurality of wedge-shaped members is increased from a center position of the track rail toward both ends, and an interval between rolling grooves sandwiched by the rolling elements is set to an axis. Along the direction, both ends are continuously changed so as to be larger than the center position. When the moving block moves from the center position of the track rail toward both ends, the moving resistance of the moving block becomes larger than the center position. The guide device with a damping function according to claim 1, wherein the moving force of the moving block is attenuated. 3. The damping device according to claim 1, wherein a top surface of the track rail is formed linearly along a longitudinal direction, or is formed in an arc shape having a predetermined curvature in a vertical direction. Guide device with function. 4. The wedge-fitting hole is a tapered female screw, the wedge-shaped member is a tapered screw, and the rolling member is sandwiched between the rolling elements by screwing the plurality of tapered screws into the plurality of tapered female screws. 2. The method according to claim 1, wherein the distance between the grooves is changed.
The guide device with a damping function according to any one of claims 1 to 3. 5. A seismic isolation device using a guide device with a damping function incorporated between the ground and a building, wherein the guide device with a damping function includes a track rail and a moving block that moves along the track rail. Rolling element rolling paths provided on both sides of the track rail and the moving block, a number of rolling elements rolling in the rolling element rolling paths, and a longitudinal direction on the top surface of the track rail. A groove formed along the groove, a plurality of wedge holes provided in the groove, and a plurality of wedge-shaped members wedge-fitted to the plurality of wedge-holes. The mounting depth is increased toward the both ends from the center position of the track rail, and the distance between the rolling grooves sandwiched by the rolling elements is increased in both end directions from the center position along the axial direction. Continuously, and narrow the rolling element rolling path relatively. A moving resistance of the moving block is increased and a moving force is attenuated. At least two guide devices having the damping function are crossed, and the track rail or the moving block of one of the guiding devices with the damping function and the other are used. A seismic isolation device using a guide device with a damping function, wherein the track rail or the moving block of the guide device with a damping function is connected and fixed.