JPH0932876A - Elastic/plastic damper device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elastic/plastic damper device which has high durability and obtains constant vibration damping effect irrespective of extent of vibration displacement. SOLUTION: Two winding rollers 2, 4 have center axes parallel to each other and the same size of diameters. A frame 6 rotatably holds the winding rollers 2, 4 on the same plane. Pinions 12, 14 are coaxially fixed to the rollers 2, 4. One rack is engaged with the pinions 12 and 14. A reciprocative rod 16 is arranged on the frame 6 in a movable manner integrally with the rack. A bar-like erection member 8 made of plastic metal is erected between the rollers 2 and 4. The bar-like erection member 8 is wound around outer peripheries of the winding rollers 2, 4 by a few times, and then both ends are fixed to the outer peripheries.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elasto-plastic damper device, and more particularly to an elasto-plastic damper device suitable as a vibration damping device for an earthquake disaster.

[0002]

2. Description of the Related Art Conventionally, an elasto-plastic damper device has a simple structure and is inexpensive as compared with many damper devices such as a friction damper device and a viscous damper device, and is easy to maintain.
It is used as a vibration control device to reduce the response vibration of structures in the event of an earthquake due to the fact that there is little change over time, etc., and it is also used as a shock absorber that promotes a cushioning effect for internal occupants in the event of an automobile collision .

FIG. 7 shows a conventional example. This conventional elasto-plastic damper device 50 is a metal rod-shaped member that is arranged in an upright direction between a building foundation portion T disposed at the lower part of a building and a ground foundation portion J provided directly on the ground. It is composed of a member 51, a rod-shaped member 51, and a spherical bearing 52 arranged on the building foundation portion T and the ground foundation portion J.

In this conventional elasto-plastic damper device 50, when a large vibration occurs on the ground foundation portion J side due to an earthquake or the like, the vibration is transmitted to the building foundation portion T via the metal rod-shaped member 51. . At this time, the metal rod-shaped member 51 is plastically deformed, whereby the vibration energy on the building foundation portion T side is absorbed and the vibration transmitted to the building foundation portion T side is reduced, and this conventional elasto-plasticity is reduced. Damping is performed by the damper device 50.

Further, FIG. 8 shows another conventional elasto-plastic damper device 60. This elasto-plastic damper device 60 includes a petal-shaped endless metal member 61 and the metal member 61 shown in FIG.
In the central portion of FIG. 8A, the fixing jigs 62 are respectively attached to the upper and lower sides in FIG. 8B.
The metal member 61 is a ring-shaped member formed in a shape that is orthogonal to the central portion, and the orthogonal portion has a vertical gap. That is, the metal member 61 is plastically deformed by compressing this gap. And
Due to this plastic deformation, the vibration energy of the elasto-plastic damper device 60 in the vertical direction is absorbed.

[0006]

However, in each of the above-mentioned conventional examples, the rod-shaped member and the metal member (hereinafter, referred to as a plastic material) are plastically deformed to suppress the vibration, and particularly, the elastic-plastic damper device is used. In the case of No. 50, since the plastic deformation was concentrated at two places, the plastic material was ruptured during repeated vibration, resulting in low durability.

Furthermore, in each of the conventional elasto-plastic damper devices, the damping effect changes depending on the magnitude of the displacement applied to the damper device, and the performance is not constant. That is, when the plastic material undergoes a small change when deformed by an external force, elastic deformation occurs instead of plastic deformation, and therefore each conventional elasto-plastic damper device is added from the outside when used as a vibration damping device. If the vibration caused is smaller than a certain displacement, the original damping effect cannot be obtained.

Further, in each of the conventional elasto-plastic damper devices, the shape of the plastic material changes due to the deformation and the resistance characteristic changes, so that when it is used as a vibration damping device, there is a constant vibration applied from the outside. When the displacement was exceeded, the original damping effect was not obtained.

[0009]

It is an object of the present invention to improve the disadvantages of the conventional example, and in particular, it has high durability, exerts a resistance force even at the time of minute deformation, and supplies a constant damping effect even if the displacement changes. It is an object of the present invention to provide an elasto-plastic damper device.

[0010]

According to a first aspect of the present invention, two take-up rollers having the same diameter and having a central axis substantially parallel to each other, and a frame body for rotatably holding the take-up rollers on the same plane. A pinion coaxially fixed to each take-up roller; a rack that engages with both pinions; a reciprocating rod that is held by a frame so that the rack can be integrally moved; A metal rod-shaped erection member made of a plastic material, which is erected between two winding rollers, and the rod-shaped erection member is wound around the outer periphery of each winding roller to some extent, It is fixed on each outer circumference.

According to the second aspect of the invention, in addition to the same structure as the first aspect of the invention, the reciprocating rod is provided with a stopper for restricting the reciprocating motion at a predetermined position.

According to a third aspect of the present invention, in addition to the same structure as the first aspect of the invention, a metal rod-shaped erection member is provided from both ends at least one quarter of the outer circumference of the winding roller. It is arranged in a wound state as described above.

According to a fourth aspect of the present invention, in addition to the same structure as that of the first aspect of the present invention, one or more metal rod-shaped erection members are detachably mounted on the outer peripheral portion of each winding roller. A mounting member for holding is attached. These configurations are intended to achieve the above-mentioned object.

With the above structure, when the reciprocating rod, which is reciprocated in a fixed direction with respect to the frame, is moved in the fixed direction, the rack moves together with the reciprocating rod. Then, in accordance with the movement of the rack, the two pinions engaged with the rack rotate, and at the same time, the two take-up rollers rotate.

The rod-shaped erection members whose both ends are fixed on the outer peripheral portions of these winding rollers are wound from one winding roller to the other winding roller. At this time, one end of the rod-shaped erection member is plastically deformed along the outer periphery of the winding roller on the winding side, and the other end is curved along the outer periphery of the winding roller. Plastically deforms in a straight line from the winding side toward the winding roller side.

That is, when the reciprocating rod is reciprocated, at the same time, plastic deformation is performed on both ends of the rod-shaped erection member.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS.

In this embodiment, two take-up rollers 2 and 4 having the same diameter whose center axes are substantially parallel to each other, and a frame 6 having the take-up rollers 2 and 4 rotatably mounted on the same plane, A pinion 12, which is coaxially fixed to each of the winding rollers 2 and 4,
14, a reciprocating rod 16 having a rack on its side surface that engages with both pinions 12 and 14, and a rod-shaped erection member 8 erected between the two winding rollers 2 and 4 and made of a metal having plasticity. Elasto-plastic damper device 1 equipped with
0.

The respective parts will be described in detail below. First, the frame 6
Is formed into a box having a substantially rectangular parallelepiped shape, as shown in FIG.
Both side walls 6A and 6B in are formed to be slightly shorter than the vertical length of the frame body 6. These side walls 6
A and 6B are held in parallel with each other and are detachably fixed using a fixing means such as a bolt (not shown). Then, between the side walls 6A and 6B, the rotary shafts 2B and 4B of two winding rollers 2 and 4 to be described later are mounted.
It is rotatably held via a and 4a.

Further, as described above, both side walls 6A, 6B
Is detachable from the overall structure of the frame body 6,
By removing either side wall 6A, 6B,
The take-up rollers 2 and 4 are configured to be removable from the frame body 6. Further, this makes it easy to replace the rod-shaped erection member 8 erected on the outer peripheral portions of the winding rollers 2 and 4.

Each of the winding rollers 2 and 4 is composed of a cylindrical member 2A, 4A and a rotating shaft 2B, 4B, respectively. These cylindrical member 2A, 4A and the rotating shaft 2B, 4B, respectively.
And have a structure in which they are fixed and rotate coaxially.

Mounting members 22 and 24 for fixing one end and the other end of the rod-shaped erection member 8 are provided on the outer peripheral portions of the cylindrical members 2A and 4A, respectively. These mounting members 22,
Since 24 has the same structure as each other, only the mounting member 22 will be described in detail below. That is, the mounting member 22 is
It is composed of a holding portion 22A that holds one end of the rod-shaped erection member 8 between the winding roller 2 and the outer peripheral portion thereof, and two bolts 22B that press the holding portion 22A toward the winding roller. By tightening the bolt 22B, one end of the rod-shaped construction member 8 is clamped.

Further, the sandwiching portion 22A has a width substantially the same as the axial width of the winding roller 2, and a plurality of rod-shaped erection members 8 are arranged in parallel in the axial direction within the allowable range of this width. Can be fixed.

Here, on the outer peripheral portions of the winding rollers 2 and 4, a groove for positioning the rod-shaped erection member 8 may be provided in the circumferential direction. Further, in consideration of the case where the plurality of rod-shaped erection members 8 are fixedly mounted on the mounting member 22 as described above, the plurality of positioning grooves may be provided in parallel in the axial direction. As a result, the erection member 8 is favorably fixed at the position of the shallow groove, and the displacement is prevented.

A pinion 12, which is fixed on the rotating shafts 2B and 4B of the winding rollers 2 and 4 so as to rotate coaxially with each other,
As shown in FIG. 1 (A), two 14 are provided on each of the left and right sides of the tubular members 2A and 4A. Hereafter, the left side pinions of the winding rollers 2 and 4 are respectively set to 12L and 1L.
4L, and the right pinions are 12R and 14R, respectively. Further, similarly, a reciprocating rod provided with a rack that engages with the pinions 12L and 14L is 16L, and the pinion 1
1 reciprocating rod with a rack that engages 2R and 14R
6R.

Since the take-up rollers 2 and 4 are urged by the rotational force from the reciprocating rods 16L and 16R through the pinions 12L, 12R, 14L and 14R on both sides, respectively,
Good rotation with good balance. That is, as compared with the case where the rotational force is applied only from one of the left and right sides, the occurrence of torsional stress generated in the rotary shafts 2B and 4B between the tubular members 2A and 4A and the pinions 12 and 14 is prevented. Therefore, the service life of the rotary shafts 2B and 4B can be extended, and the maintainability of the elasto-plastic damper device 10 as a whole can be improved.

Pinion 12L, 12R, 14L, 14R
Since the left and right reciprocating rods 16L and 16R engaging with each have the same structure, one reciprocating rod 16R will be described below.

As described above, the reciprocating rod 16R is a round rod-shaped erection member having a rack on its side surface that engages with the pinions 12R and 14R. As shown in FIG. 1 (B), since the reciprocating rod 16R is engaged from the same side of the two pinions 12R and 14R arranged above and below, the pinion 12R and 14R are the same as those of the reciprocating rod 16R. The vertical movement urges rotation in the same direction.

The reciprocating rod 16R penetrates the frame body 6 in the vertical direction, and linear bearings 16Ra and 16Rb are provided in the upper and lower penetrating portions of the frame body 6, respectively. This linear bearing 16Ra, 16Rb
This makes it possible to smoothly move the reciprocating rod 16R up and down and prevent friction with the frame body 6.

The upper and lower ends of the reciprocating rods 16L and 16R are connected by connecting members 18A and 18B, respectively. These connecting members 18A and 18B interlock the reciprocating rods 16L and 16R,
It also has a function as a stopper that limits the vertical movement of L and 16R.

Further, on the upper surface of the connecting member 18A, a ring-shaped disposing member 20 for mounting the elasto-plastic damper device 10 at a place of use is provided.

A bottom plate 25 is provided below the frame body 6 via four arms 23. This arm 2
3 is set to a length such that the bottom plate 25 does not collide when the reciprocating rod 16 descends. On the lower surface of the bottom plate 25, an arranging member 20 for attaching the elasto-plastic damper device 10 to a use place.
An arrangement member 26 having the same structure as that of is provided.

Between the winding rollers 2 and 4 described above,
A rod-shaped erection member 8 is erected with both ends fixed to the attachment members 22 and 24, respectively. Further, as shown in FIG. 1 (B), the rod-shaped erection member 8 has the cylindrical members 2 of the winding rollers 2 and 4 from the mounting members 22 and 24 at both ends.
It is wound around the outer circumference of A, 4A for a quarter or more, and
The winding rollers 2 and 4 are arranged without slack.

The rod-shaped erection member 8 is made of a metal having plasticity (for example, mild steel, copper, aluminum, etc.) and is formed in a relatively thin round rod shape. With this configuration, for example, when the reciprocating rod 16 is urged to descend, the winding rollers 2 and 4 are rotated, and further wound around the winding roller 2 at one end of the rod-shaped erection member 8. The cylindrical member 2A is curved in accordance with the outer peripheral portion of the cylindrical member 2A, and the portion of the other end that was wound around the take-up roller 4 is linearly extended, and plastic deformation occurs at both ends. As a result, a constant resistance force is generated in the reciprocal movement of the reciprocating rod 16.

The above-mentioned resistance force can be changed by exchanging rod-shaped erection members 8 having different diameters. In this case, the cylindrical members 2A, 4 of the winding rollers 2, 4 are changed.
Depending on the balance with the diameter of A (for example, when the diameter of the winding rollers 2 and 4 is too small with respect to the thickness of the erection member 8), the rod-shaped erection member 8 is formed into the tubular members 2A and 4A.
In some cases, plastic deformation may not be suitably generated along the outer peripheral portion of the rod, and in such a case, the durability of the rod-shaped erection member 8 may be significantly impaired.

On the other hand, as described above, the mounting members 22 and 24
However, since it is formed so that a plurality of rod-shaped erection members 8 can be attached, it is preferable to adjust the resistance force by increasing or decreasing the number of attachments of the rod-shaped erection members 8 in order to adjust the resistance force. . In particular, in the present embodiment,
Since the erection member 8 is a rod having a relatively small diameter, a relatively large number of erection members 8 can be fixed to the sandwiching portion 22A of the mounting member 22 having a constant width, whereby the elasto-plastic damper device 10 is provided. It is possible to widen the usable load area of the.

The operation of the above embodiment will be described with reference to FIGS. FIG. 3 shows a case where the elasto-plastic damper device 10 is applied as a vibration damping device for a structure such as pipe piping equipment. That is, reference numeral P is a pipe for piping through which a fluid flows, and this pipe P is arranged via a support K on a base D formed of concrete or the like that is cast on the ground surface. ing. The pipe P is bent in the middle as shown in the figure, and is fixedly supported by the two support bases K at substantially equal distances across the bent portion (the support base K on one end side is not shown). ).

If the elasto-plastic damper device 10 is not provided in the piping system having the same structure as that shown in FIG. 3, vertical vibration close to the natural frequency of the vibration system formed by the pipe P is added due to the occurrence of an earthquake or the like. In this case, it is expected that the pipe P will be violently vibrated around the bent portion, and the pipe P will be broken from the root on the support K side or a portion near the bent portion.

Therefore, in the piping facility for the pipe P shown in FIG. 3, the elasto-plastic damper device 10 is disposed below the bent portion of the pipe P, which is the center of vibration, as a vibration damping device.
Normally, the elasto-plastic damper device 10 is arranged in a state where the reciprocating rod 16 is in the middle of its reciprocating range (state of FIG. 1). At this time, the arrangement member 20 side is fixed to the pipe P,
The bottom plate 25 side is fixed to the base D side.

When an earthquake occurs, the vertical vibration of the pipe P is transmitted to the reciprocating rod 16. FIG. 2 shows a case where the displacement of the vibration in the descending direction occurs. As the pipe P descends, the reciprocating rod 16 is urged to descend,
Along with this, from the rack provided on the side surface of the reciprocating rod 16, the take-up rollers 2 and 4 via the pinions 12 and 14.
The rotational force in the clockwise direction in FIG. 2 is transmitted to each.

As a result, the cylindrical member 2 of the winding roller 2
On the outer peripheral portion of A, one end side of the erection member 8 is further wound from the state of FIG. 1 and is plastically deformed according to the shape of the outer peripheral portion of the tubular member 2A.

On the other hand, on the outer peripheral portion of the tubular member 4A of the take-up roller 4, the other end side of the erected member which has been curved in accordance with the outer peripheral surface of the tubular member 4A that has been wound is the take-up roller. It is drawn to the 2 side and plastically deforms linearly.

As the reciprocating rod 16 descends, the plastic deformation described above is performed, so that a constant resistance force is applied to the vibration of the pipe P in the descending direction. That is, the vibration energy when the pipe P descends is consumed by the plastic deformation that occurs at both ends of the erection member 8, and the vibration in the descending direction is suppressed.

When the pipe P vibrates in the ascending direction, the reciprocating rod 16 is urged by an upward moving force to wind one end of the erection member 8 around the take-up roller 4 and the other end thereof. Plastic deformation is performed linearly from the wound state on the side to the winding roller 4 side. That is, a resistance force substantially equal to the above-described downward vibration is transmitted to the pipe P side, and the upward vibration is similarly suppressed.

While the vibration due to the earthquake continues, the above-mentioned elasto-plastic damper device 10 suppresses the vibration in each vertical direction, thereby suppressing the vibration generated in the bent portion of the pipe P, for example, by the pipe P. Even if the vibration of the formed vibration system occurs at the natural frequency, the breakage of the pipe P is effectively prevented.

Further, in the elasto-plastic damper device 10, the erection member 8 is wound by the winding rollers 2 and 4 or is stretched linearly from the wound state to be plastically deformed. Deformation points do not concentrate at one point of 8, and, for example, on one end side to be wound, plastic deformation is uniformly performed in all regions to be wound, and in the same manner, linear deformation is performed. On the other end side to be stretched, plastic deformation is uniformly performed in all the regions to be stretched.

At this time, since plastic deformation is uniformly performed at both ends of the erection member 8, the erection member 8
The displacement of the plastic deformation that occurs at any one point of the plastic deformation region is prevented from becoming excessively large, whereby the erection member 8
The number of repeated uses is significantly increased as compared with the conventional elasto-plastic damper device, and the maintainability of the elasto-plastic damper device 10 is improved. In particular, even when the reciprocating rod 16 is largely displaced by vibration due to an external factor, the erection member 8 only undergoes a constant displacement, so that its life is extended and the maintainability of the entire apparatus is improved.

In this embodiment, the connecting members 18A,
Since 18B has a function as a stopper that limits the reciprocating motion of the reciprocating rods 16L and 16R, the excessive amplitude of the reciprocating rods 16L and 16R is prevented from occurring. As a result, as shown in FIG. 4, when the erection member 8 is excessively wound on one winding roller side, abnormal plastic deformation occurs on the other winding roller side, or excessive tension is generated. It is possible to effectively prevent a situation such as breakage caused by.

Here, the present embodiment is not limited to the above-mentioned respective configurations, and other structures that operate in the same manner may be used. Specifically, instead of the rod-shaped erection member 8, a flat plate-shaped erection member may be used.

Further, the reciprocating rods 16L and 16R may be set to be longer and the rack portion may be made longer so that the elasto-plastic damper device 10 can be formed so as to be able to cope with vibration of larger amplitude. At this time, the erection member 8 having a longer length is used, and both ends thereof are extraly wound around the winding rollers 2 and 4 in advance.

In the elasto-plastic damper device 10 described above, the take-up rollers 2 and 4 and the pinions 12 and 14 provided on the take-up rollers 2 and 4 may be interlocked only in one direction. That is, bearings (one-way clutch or the like) that transmit only rotation in one direction are provided between the rotating shafts 12B and 14B and the tubular members 12A and 14A, respectively.
As shown by the arrow in FIG. 5, the rotational force from the pinion 12 is transmitted only to the tubular member 2A of the winding roller 2 in the clockwise direction, while the rotational force from the pinion 14 is The tubular member 4A of the take-off roller 4 has a structure in which a rotational force only in the counterclockwise direction is transmitted.

Further, sliding members 2C and 4C are provided, which are in contact with the outer peripheral portions of the cylindrical members 12A and 14A so as not to interfere with the winding operation of the erection member 8 and give a proper frictional force. With these configurations, for example, the reciprocating rod 1
When 6 descends, the rotational force is applied only to the tubular member 2A of the winding roller 2, one end of the erection member 8 is wound around the tubular member 2A, and the tubular member 2A is in the wound state. Construction member 8
The take-up roller 4 side portion is subjected to tension on the take-up roller 2 side, and plastic deformation is performed linearly.

On the other hand, when the reciprocating rod 16 rises,
A rotational force is applied only to the tubular member 4A of the take-up roller 4, one end of the erection member 8 is wound around the tubular member 4A of the take-up roller 4, and the other end is taken up by the take-up roller 2 From the cylindrical member 2A, tension is applied to the winding roller 4 side and linear plastic deformation is performed.

At this time, the take-up roller on the side to which the rotational force is not applied from the reciprocating rod 16 receives an appropriate frictional force by the sliding member, so that the erection member 8 has two take-up rollers 2 and 4. It prevents slack between. That is, with the above configuration, the erection member 8 is stretched due to temperature changes, deformation during use, and the like, and the vertical vibration applied to the elasto-plastic damper device 10 due to the slack between the two winding rollers 2 and 4. In addition to effectively eliminating the situation where the original reaction force cannot be applied, the frictional force of the sliding members 2C and 4C has the effect of being added to the resistance force due to the plastic deformation of the erection member 8.

Here, another embodiment is shown in FIG. The elasto-plastic damper device 30 shown in FIG. 6 is the elasto-plastic damper device 1 disclosed in FIG. 1 in that it has one winding roller.
The configuration is different from that of 0, and the other parts are configured by the same.

That is, the take-up roller 32 is the tubular member 32.
A and a rotation shaft 32B which is a rotation center of the cylindrical member 32A.
And the left and right of the tubular member 32A in FIG. 6A, the pinion 12L with the rotation shaft 32B as the center of rotation,
12R is provided. The cylindrical member 32A has the same diameter as the pitch circles of the pinions 12L and 12R. Then, one end of the erection member 8 is fixed to the outer peripheral surface of the tubular member 32A in a state of being somewhat wound.

On the other hand, the other end of the erection member 8 is erected and fixed on both the reciprocating rods 16L and 16R, and reciprocates together with the reciprocating rods 16L and 16R.
It is fixed at 1.

In the elasto-plastic damper device 30, when the reciprocating rod 16 descends, the forward moving member 31 fixed to the reciprocating rod 16 also descends, and at the same time, the take-up roller 32 passes through the pinion 12. The clockwise rotating force in FIG. 6B is applied to the take-up roller 32 of the erection member 8.
The part that was wound around is plastically deformed linearly. At this time, the cylindrical member 32A of the take-up roller 32 moves to the pinion 12
Since the diameter is the same as that of the pitch circle, the descending movement distance of the reciprocating rod 16 is equal to the rotation movement distance of the tubular member 32A, so that the erection member 8 does not sag.

When the reciprocating rod 16 moves upward, the forward moving member 31 fixed to the reciprocating rod 16 also moves upward, and at the same time, the winding roller 32 is moved to the winding roller 32 through the pinion 12 as shown in FIG. ), The erection member 8 is wound around the take-up roller 32,
It is plastically deformed into a shape corresponding to the outer peripheral surface of the cylindrical member 32A.
The erection member 8 does not sag in the same manner as when the reciprocating rod 16 descends.

By the above operation, the elastic-plastic damper device 30
Since the erection member 8 always plastically deforms when the reciprocating rod 16 moves up and down, a constant resistance force is always generated during the reciprocating motion of the reciprocating rod 16, which is almost the same as the elastic-plastic damper device 10. Thus, it is possible to obtain a vibration damping effect for the vibration system to which the reciprocating rod 16 is fixed. Further, since the elasto-plastic damper device 30 is composed of the single take-up roller 32, the number of parts can be reduced, and thus the production cost can be reduced.

[0061]

According to the present invention, when the reciprocating rod reciprocates with respect to the frame, both ends of the rod-shaped erection member made of metal having plasticity are interlocked with the reciprocating motion of the winding roller. The configuration is such that plastic deformation is performed according to the shape of the outer peripheral surface, or plastic deformation is performed by linearly extending the state of being wound around the winding roller. As a result, the forward and backward movements of the reciprocating rod are accompanied by a certain resistance force. For example, by connecting the reciprocating rod to the vibrating body, the resistance force acts on the motion of the vibrating body, and the vibrating body vibrates. Suppressed.

Further, according to the present invention, on the one end side where the erection member is wound by the take-up roller, the plastic deformation is uniformly performed in all regions where the erection member is wound, and the erection member is linearly drawn. On the other end side to be stretched, plastic deformation is uniformly performed in all regions where the stretching is performed. For this reason, deformation points do not concentrate on one point of the installation member, and high durability against repeated use of the installation member can be obtained.

Further, since the plastic deformation of the erection member is performed along the circumferential surface, the displacement of the plastic deformation occurring at any one point of the plastic deformation region of the erection member is prevented from becoming excessive, and therefore, , Even if vibration of excessive displacement is applied to the reciprocating rod due to external factors, the displacement of plastic deformation that occurs everywhere in the erection member is constant, and as a result, the erection member is not affected by vibration during large displacement. High durability can be maintained, and the elasto-plastic damper device according to the present invention has a structure having high maintainability as compared with the conventional elasto-plastic damper device.

Further, according to the present invention, the range in which the plastic deformation of the erection member is generated increases depending on the magnitude of the displacement of the reciprocating rod in the reciprocating direction, and the displacement at each point in the region where the plastic deformation occurs is always constant. Therefore, it is possible to effectively avoid the situation in which the resistance changes depending on the magnitude of the displacement as in the conventional case, and it is possible to always generate a constant resistance regardless of the magnitude of the displacement of the reciprocating rod.

That is, even if the displacement of the reciprocating rod is small, the erection member is plastically deformed, which can cause a constant resistance force in the reciprocating motion of the reciprocating rod. is there. Similarly, even if the reciprocating rod is excessively displaced, the erection member does not change its resistance characteristic due to the excessive displacement peculiar to the plastic material. Deforms and supplies a constant resistance force.

Further, in the case of the constitution in which the stopper for restricting the reciprocating motion of the reciprocating rod is provided, the excessive amplitude of the reciprocating rod is prevented from being generated, whereby the erection member is excessively provided on one winding roller side. It is possible to effectively prevent abnormal plastic deformation on the side of the other take-up roller due to being wound, or breakage due to generation of excessive tension, and to maintain the erection member. .

Further, in the case where the winding roller is provided with a mounting member capable of detaching one or more erection members, the resistance force generated during the reciprocating movement of the reciprocating rod is changed by changing the number of the erection members mounted. Therefore, when the present invention is used as a vibration damping device, this resistance force can be adjusted in advance in accordance with the strength of vibration so that an appropriate vibration damping effect can be obtained. .

As described above, the present invention can provide an excellent elasto-plastic damper device which has never been obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing one embodiment of the present invention, and FIG.
1A is a partially omitted front view, and FIG. 1A is a partially omitted side view.

FIG. 2 is an explanatory diagram showing an operation of the exemplary embodiment disclosed in FIG.

FIG. 3 is an explanatory diagram showing a state in which the embodiment disclosed in FIG. 1 is installed in piping equipment.

FIG. 4 is an explanatory diagram showing a state of the erection member when the take-up roller is excessively rotated.

FIG. 5 is an explanatory diagram showing a case where the two winding rollers of the embodiment disclosed in FIG. 1 are each urged to rotate in only one direction.

FIG. 6 shows another embodiment, FIG. 6 (A) is a front view with a part omitted, and FIG. 6 (B) is X- of FIG. 6 (A).
It is sectional drawing which abbreviate | omitted along the X-ray.

FIG. 7 is an explanatory view showing a conventional elasto-plastic damper device.

FIG. 8 is a view showing another conventional elasto-plastic damper device,
FIG. 8A is a plan view and FIG. 8B is a front view.

[Explanation of symbols]

 2 Take-up roller 6 Frame body 8 Construction member 10 Elasto-plastic damper device 12,14 Pinion 16 Reciprocating rod 18A, 18B Connecting member (stopper) 22, 24 Mounting member

Claims (4)

[Claims] 1. Two take-up rollers having the same diameter whose center axes are substantially parallel to each other, a frame body for rotatably holding the take-up rollers on the same plane, and coaxially fixed to each of the take-up rollers. Pinion, one rack that engages with both of these pinions, a reciprocating rod mounted on the frame so that the rack can be integrally moved, and the plasticity installed between the two winding rollers. And a rod-shaped erection member made of a metal, wherein the rod-shaped erection member is wound around the outer peripheral portion of each of the winding rollers to some extent, and then both ends are fixed onto the outer peripheral portions, respectively. Elasto-plastic damper device. 2. A stopper for restricting reciprocating motion at a predetermined position is provided on the reciprocating rod.
The described elastic-plastic damper device. 3. The rod-shaped erection member is arranged in a state in which at least the outer peripheral portion of each of the winding rollers is wound from one end to the other by a quarter or more.
The described elastic-plastic damper device. 4. A mounting member for removably holding at least one or two or more rod-shaped erection members is attached to an outer peripheral portion of each winding roller.
The described elastic-plastic damper device.