KR20210029524A - Auto restoration spring damper - Google Patents

Abstract

The automatic restoration spring damper is started. The automatic restoration spring damper according to the present invention includes a hollow cylinder in which fixing plates are respectively coupled to both ends; First and second shafts respectively penetrating the fixing plate and sliding according to an external force; First and second movable plates coupled to ends of the first and second shafts facing each other and sliding along the inside of the cylinder; A urethane block interposed between the first and second moving plates, elastically deformed according to the sliding of the first and second moving plates, and attenuating an external force; And first and second coil springs interposed between the first and second moving plates and the fixed plate facing each other, elastically deformed according to the sliding of the first and second moving plates, and attenuating an external force. According to the present invention, the buffering performance of the damper itself can be efficiently operated, and when the external force is removed after the damping action, the urethane block and the first and second coil springs are linearly and easily in their original form without large resistance or interference. There is an effect that can be restored easily.

Description

Automatic Restoration Spring Damper {AUTO RESTORATION SPRING DAMPER}

The present invention relates to an automatic restoration spring damper, and more particularly, to an automatic restoration spring damper that can be restored to its original shape after deformation while preventing damage to the structure by reducing the load applied from the outside while installed on the structure. About.

Due to the increase in natural disasters caused by climate change around the world and the expansion of uncertainty about the natural disasters, the safety of structures above a certain level is increasingly demanded in the construction of structures in recent years.

Despite this global trend, until recently, due to the long-standing perception that Korea is a safe country among various natural phenomena, especially from earthquakes, active investment and encouragement in R&D such as structure optimization design and collapse prevention have not been sufficiently made.

As a result of the above, most of the current domestic structures and facilities are in a situation in which they are inevitably more vulnerable to unpredictable natural disasters such as earthquakes and typhoons.

However, as the construction of large structures such as high-rise buildings and long bridges has become more common and increased compared to the previous one, the structure itself directly absorbs vibration energy to secure the safety of the structure from external loads (earthquakes, typhoons). Various seismic designs have been developed and applied.

In addition, research and development on vibration suppression designs such as dampers that are additionally installed on an already constructed structure to dissipate or reduce vibration energy flowing into the structure are being actively conducted.

In connection with the seismic design or vibration suppression design as described above, Korean Patent Publication No. 1661758 discloses a circular restoration type energy dissipation damper. Registered Patent Publication No. 1661758 discloses a first friction plate having a first flat surface; A second friction plate that is formed to be slide relative to the first friction plate in the X-axis direction, and has a second flat surface that rubs against the first flat surface when the slide is moved relative to the slide; And a shape memory steel bar that connects the first friction plate and the second friction plate, and forms a recovery force in a direction opposite to the moving direction when the slide moves relative to each other.

Registered Patent Publication No. 1661758 discloses that a shape memory steel bar connects a first friction plate and a second friction plate, which rub against each other in the X-axis direction, in the Y-axis direction, so that it becomes circular after deformation occurs due to a horizontal load applied to the structure. It is made to be automatically restored, and the restoring force can be easily adjusted during installation, and residual deformation is prevented even without replacement work due to damage to the structure, so that maintenance costs due to restoration of the structure are not incurred.

However, Korean Patent Publication No. 1661758 has a problem that it is structurally difficult to control the restoring force without being completely disassembled once manufactured.

And the above prior art partially applies a method of dissipating vibration energy by converting it into heat by friction through a friction damper, so it is fundamentally difficult to completely restore the damper itself to its original state, and some parts are deformed by external force. If it is, it is difficult to manage with simple repair and reinforcement, so structural improvement or improvement is necessary.

Republic of Korea Patent Publication No. 1661758 (Registration Date: 2016.09.26)

An object of the present invention is not a method of absorbing external force such as vibration using frictional force that makes it difficult to return the damper itself, but sequentially or overlapping the load or impact applied from the outside based on the deformation of various kinds of elastic materials. It is to provide an automatic restoration spring damper that can be buffered by using and easily return to its original state after deformation.

The object is, a hollow cylinder in which fixing plates are respectively coupled to both ends; First and second shafts respectively penetrating the fixing plate and sliding according to an external force; First and second movable plates coupled to ends of the first and second shafts facing each other and sliding along the inside of the cylinder; A urethane block interposed between the first and second moving plates, elastically deformed according to the sliding of the first and second moving plates, and attenuating an external force; And first and second coil springs that are interposed between the first and second moving plates and the fixed plate facing each other, are elastically deformed according to the sliding of the first and second moving plates, and attenuate external forces. Restoration is achieved by means of a spring damper.

The automatic restoring spring damper is installed between the first and second moving plates and the fixed plate facing each other, and is tensioned or independently tensioned together with the corresponding first and second coil springs, and a superelastic first for attenuating external force. ,2 It may further include a shape-memory steel bar.

The first and second shape memory steel bars may be installed detachably and spaced apart from each other along the circumference of the first and second coil springs in order to adjust the damping ability against external force.

The first and second coil springs may be made of a superelastic shape memory alloy while being penetrated by the first and second shafts.

The first and second shape memory steel rods are fixed to the first and second moving plates after one end is fixed to the fixed plate, and the other end passes through a sleeve installed through the first and second moving plates, and is fixed to the first and second moving plates. It is tensioned together with the first and second coil springs or independently tensioned to attenuate an external force, and when the corresponding first and second coil springs are compressed, they are slid against the sleeve, and bending deformation may be prevented.

According to the present invention, between the urethane blocks that are elastically deformed between the first and second moving plates that are coupled to the ends of the first and second shafts and slide along the inside of the cylinder, and between the first and second moving plates and the fixed plates facing each other. The first and second coil springs that are elastically deformed according to the sliding of the first and second moving plates are linearly interlocked with each other to perform sequential or overlapping damping against external forces, so that the damping performance of the damper itself can be efficiently operated. In the case where the external force is removed after the damping action, the urethane block and the first and second coil springs can be linearly restored to their original shape without great resistance or interference.

1 is a perspective view of an automatic restoration spring damper according to an embodiment of the present invention.
2 is an exploded perspective view of FIG. 1.
3 is a cross-sectional view taken along line A-A' of FIG. 1.
4 is an operating state diagram showing a state in which the automatic restoration spring damper of FIG. 1 operates in response to an external force based on FIG. 3.
5 is a graph showing the mechanical behavior (displacement relationship versus external force) of each damping means provided in the automatic restoration spring damper of FIG. 1 separately.
FIG. 6 is a view showing several examples of a column-beam frame and a base isolation support in which the automatic restoration spring damper of FIG. 1 is installed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of functions or configurations that are already known will be omitted in order to clarify the gist of the present invention.

1 is a perspective view of an automatic restoration spring damper according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, FIG. 3 is a cross-sectional view taken along line A-A' of FIG. 1, and FIG. 4 is Is an operating state diagram showing a state in which the automatic restoration spring damper of FIG. 1 operates with respect to an external force, and FIG. 5 shows the mechanical behavior (displacement relationship versus external force) of each damping means provided in the automatic restoration spring damper of FIG. It is a separate graph, and FIG. 6 is a view showing several examples of a column-beam frame and a base isolation support in which the automatic restoration spring damper of FIG. 1 is installed.

In the description and claims of the invention, the upper (upper), lower (lower), left and right (lateral or lateral), front (front, front), rear (fold, rear), etc., which refer to directions, etc., are not intended for limitation of rights. For convenience of explanation, it is determined based on the relative position between the drawings and the components, and this is followed unless specifically limited otherwise.

The automatic restoration spring damper 100 according to the present invention is installed in a structure that is shaken by an external force (earthquake, typhoon) or a load generated from the outside and transmits external force based on the deformation of various dissimilar materials having elasticity. This invention was conceived so that damage to the structure can be prevented by sequentially or overlapping buffering, while the buffering performance can be easily adjusted if necessary, and even if it is deformed by an external force, it can be restored to its original shape afterwards.

In order to specifically implement the functions or actions as described above, the automatic restoration spring damper 100 according to the embodiment of the present invention is, as shown in FIGS. 1 to 4, the cylinder 110, the first, second Shafts (120a, 120b), first and second moving plates (130a, 130b), urethane block (140), first and second coil springs (150a, 150b) and first and second shape memory steel bars (160a, 160b), etc. It can be configured to include.

Here, the urethane block 140, the first and second coil springs 150a and 150b, and the first and second shape memory steel bars 160a and 160b are respectively designed in order in response to the external force to attenuate the external force transmitted to the structure. Alternatively, it is a damping means that is simultaneously deformed and then restored to its original shape when external force is removed.

The damping means as described above are made of different materials having elasticity, and are integrated into one organic structure in the present invention so that each deformation corresponding to an external force is interlocked with each other, thereby automatically restoring the spring damper 100 according to the present invention. ), the disadvantages of each material and the disadvantages of deformation are complemented to each other, thereby exhibiting synergistic buffering and restoration performance.

A more detailed description of this will be described in the process of describing each of the above-described components below.

First, the cylinder 110 has the first and second shafts 120a and 120b and the first and second moving plates 130a and 130b, which respectively slide according to an external force, as described below, and the urethane block 140 and the first, 2 As a cylindrical component provided to accommodate the coil springs 150a, 150b, etc., the shape may be variously deformed into a cylinder or a polygonal column.

In the central portion of the cylinder 110, as shown in Figs. 1 and 2, a hollow 112 having a generally constant cross section along the longitudinal direction is formed through, and the first and second shafts 120a and 120b are formed at both ends thereof. A pair of fixing plates 114a and 114b shielding the above-described hollow 112 in a state penetrated by the fixing bolts FB may be firmly coupled.

The first and second shafts 120a and 120b pass through the above-described pair of fixing plates 114a and 114b, respectively, and directly receive external force such as vibration transmitted from the outside to perform a sliding operation. As a constituent element of a shape, the shape may also be variously deformed into a cylinder or a polygonal column.

Each of the first and second shafts 120a and 120b penetrates through the fixing plates 114a and 114b while the other end is provided inside the cylinder 110 and is exposed to the outside of the cylinder 110. Tensile force (TF) or compression force (CF) is transmitted from the outside through the stage.

The first and second moving plates 130a and 130b are provided inside the cylinder 110 and are coupled to the other ends of the first and second shafts 120a and 120b facing each other, respectively, so as to prevent the inside of the cylinder 110. As a disc-shaped component configured as a pair of sliding along, the cross-sectional shape forms a'T' shape through coupling with the above-described first and second shafts 120a and 120b as shown in FIG. 3.

At this time, the first and second moving plates (130a, 130b) are formed to have a certain clearance with respect to the hollow (112) so that it can slide smoothly within the cylinder (110) according to the guidance of the hollow (112) described above. It is done.

In this way, the first shaft 120a, the first moving plate 130a, the second shaft 120b, and the second moving plate 130b integrated to form a'T' shape are the first and second shafts 120a and 120b. ), each of the fixed plates 114a and 114b penetrated by the cylinder 110 performs an accurate sliding operation according to the overlapping guidance through the hollow 112 of the cylinder 110.

The urethane block 140 is interposed between the first and second moving plates 130a and 130b facing each other in the cylinder 110 to be elastically deformed according to the sliding of the first and second moving plates 130a and 130b, and external force As a columnar component that is attenuated and restored to its original shape when external force is removed, it may be made of polyurethane, a thermoplastic polymer compound having a urethane bond.

At this time, since polyurethane is easy to implement a wide range of elasticity through a change in strength, and has excellent elasticity and durability, the automatic restoration spring damper 100 according to the present invention Through the change or replacement of the urethane block 140, it is possible to variously adjust the restoration ability and vibration damping ability.

In the center of both sides of the urethane block 140, a fitting hole that engages with the fixing protrusion 134 of the first and second moving plates 130a and 130b so as not to be separated between the first and second moving plates 130a and 130b is formed. I can.

As the urethane block 140 is disposed in a form interposed between the first and second moving plates 130a and 130b facing each other as shown in FIG. 3, the first shaft 120a (the second shaft 120b )), the external force (tensile force (TF) or compressive force (CF)) applied to one side of the urethane block 140 after passing through the first and second coil springs 150a and 150b of FIG. 4 as described below ( After being partially buffered through CD), it is transmitted to the second shaft 120b (first shaft 120a) and may be attenuated.

In addition, the urethane block 140 is compressively deformed (CD) with respect to the external force applied in the direction in which the first shaft 120a and the second shaft 120b face each other in some cases, and a damping function that buffers external forces on both sides. Will be performed.

On the other hand, the urethane block 140, after compression, can be immediately exerted on the first and second moving plates 130a and 130b, and reacts to external forces without a gap between the first and second moving plates 130a and 130b. It is (compressed) and may be interposed between the first and second moving plates 130a and 130b in a state compressed in advance to a certain level in order to buffer the external force.

In this way, installing the urethane block 140 in a pre-compressed state, for example, by adjusting the length of the first and second shafts 120a and 120b coupled to the structure, or by adjusting both sides of the urethane block 140 as described later. It can be achieved by increasing the elastic force of the first and second coil springs 150a and 150b installed to pressurize than the urethane block 140.

The urethane block 140 as described above absorbs the external force applied to the structure in a manner corresponding to the mechanical behavior graph according to the compressive deformation-recovery stress (F1) and the displacement amount (△) shown in FIG. 5(a). And, when the external force is removed, the behavior is completely restored to its original shape.

At this time, the urethane block 140 exhibits a vibration suppression performance that absorbs external force energy corresponding to the inner area of the closed curve shown by the deformation-recovery stress (F1) and the displacement amount (△), and in particular, the present inventors It serves to reduce the residual displacement by providing a certain restoring ability to the restoring spring damper 100.

The first and second coil springs 150a and 150b are interposed between the first and second moving plates 130a and 130b and the fixed plates 114a and 114b facing the first and second moving plates 130a and 130b, respectively. As a component that is elastically deformed according to the sliding of the urethane block 140 and attenuates the external force together with the above-described urethane block 140, a material that can be compressed and restored smoothly consisting of a coil or a spiral is sufficient, so that metal or synthetic resin is used as a material. Can be made.

However, the first and second coil springs 150a and 150b according to the embodiment of the present invention are made of a superelastic shape memory alloy as a material so that the central portion is penetrated by the first and second shafts 120a and 120b. Both ends may be disposed to be supported by the fixing portion and the first and second moving plates 130a and 130b, respectively.

Here, the superelasticity shape memory alloy (superelasticity shape memory alloy) is an alloy material manufactured to restore its original shape at room temperature even if no heat is applied after plastic deformation is applied. In the example, the first and second coil springs 150a and 150b are manufactured using a nitinol alloy in order to minimize residual deformation due to external force and restore the original shape smoothly in an operating environment at room temperature.

As described above, the first and second coil springs 150a and 150b vary not only the material properties of the superelastic shape memory alloy, but also the ability to attenuate and restore external forces based on the shape of the coil itself as necessary. You will be able to do it.

As an example, the first and second coil springs (by changing the thickness of the helix of the first and second coil springs 150a, 150b or increasing or decreasing the number of turns of the helix, etc.) corresponding to the installation location or use to which the present invention is applied. 150a, 150b) can be adjusted and limited in various ways.

Meanwhile, the first and second coil springs 150a and 150b can also be immediately exerted on the first and second moving plates 130a and 130b and the fixing plates 114a and 114b after compression, and the first and second movements The first and second moving plates 130a and 130b are pre-compressed to a certain level in order to maintain a solid support relationship with the above-described urethane with the plates 130a and 130b interposed therebetween, and to buffer external forces together. ) And the fixing plate (114a, 114b) may be interposed between.

The first and second shape memory steel bars 160a and 160b are installed symmetrically between the first and second moving plates 130a and 130b and the fixing plates 114a and 114b facing each other to correspond to the first and second coil springs. As a component that is tensioned together with (150a, 150b) or independently tensioned and attenuates external force, minimization of residual deformation against external force and restoration of the original shape are similar to the first and second coil springs 150a, 150b according to the embodiment. It can be manufactured using a nitinol alloy so that it can be smoothly performed in an operating environment at room temperature.

These first and second shape memory steel bars 160a and 160b do not react at all to the tensile force TF applied to the first and second shafts 120a and 120b, whereas the form that is deformed to attenuate the external force does not react at all to the compressive force. For (CF), the function of the first and second coil springs 150a and 150b is synergistically supplemented in that tensile deformation (TD) is performed like the corresponding first and second coil springs 150a and 150b respectively. Will do.

As shown in Figs. 2 to 4, one end of the first and second shape memory steel bars 160a and 160b according to the embodiment of the present invention may be fixed to the fixing plates 114a and 114b, respectively. It can be made by a screw thread exposed through (114a, 114b) and a fixing nut (N) for screwing with it.

And the other ends of the first and second shape memory steel bars (160a, 160b) pass through the sleeve 132 installed through the first and second moving plates (130a, 130b) and then to the first and second moving plates (130a, 130b). It may be locked and fixed, and the fixing method may be achieved by a screw thread protruding through the sleeve 132 and a fixing nut (N) for screwing with the screw thread.

As above, the other ends of the first and second shape memory steel bars 160a and 160b pass through the sleeve 132 and are not rigidly fixed to the first and second moving plates 130a and 130b, but are respectively locked. The shape memory steel rods 160a and 160b are tensioned together with the corresponding first and second coil springs 150a and 150b or are independently tensioned and capable of attenuating external forces, and corresponding first and second coil springs 150a , 150b) is slid with respect to the sleeve 132 and bending deformation can be prevented.

On the other hand, the first and second shape memory steel bars 160a and 160b according to an embodiment of the present invention may be installed detachably and spaced apart from each other along the circumferences of the first and second coil springs 150a and 150b. , This is to make it possible to easily variably adjust the damping capability and restoration capability for external force as needed based on the first and second shape memory steel bars 160a and 160b.

That is, as shown in FIG. 2, the first and second movements of the four superelastic shape memory steel rods are arranged inside the cylinder 110 along the circumferences of the first and second coil springs 150a and 150b. The plates 130a, 130b and the fixing plates 114a, 114b facing each other may be provided, or, although not shown, three may be spaced apart along the circumference of the first and second coil springs 150a, 150b at equal intervals. There is.

In this way, as the self-healing restoration ability is easily reinforced and adjusted through an easy increase or decrease in the number of installations for the first and second shape memory bars 160a, 160b, the automatic restoration spring damper 100 according to the present invention is more It will be able to be operated and managed efficiently.

As described above, the variable adjustment of the damping capacity and restoration capacity based on the first and second shape memory steel bars 160a and 160b is replaced with a shape memory steel bar of a different thickness, or faces the first and second moving plates 130a and 130b. The tension of the shape memory steel bar installed between the fixing plates 114a and 114b may be variously changed by adjusting the fixing nut N described above. Furthermore, when the tension of the shape memory steel bar is adjusted through the above-described fixing nut (N), the time point at which it reacts to the external force can also be varied.

The first and second shape memory steel bars 160a and 160b as described above are structured in a manner corresponding to the mechanical behavior graph according to the deformation-recovery stress (F2) and displacement amount (△) shown in FIG. 5(b). It absorbs the external force applied to and when the external force is removed, the behavior is completely restored to its original shape.

At this time, the first and second shape memory steel bars 160a and 160b exhibit a vibration damping performance that absorbs external force energy corresponding to the inner area of the closed curve shown by the deformation-recovery stress (F2) and the displacement amount (△). Yet, it plays a role of reinforcing the restoration capability of the automatic restoration spring damper 100 according to the present invention.

The first and second shape memory steel bars 160a and 160b as described above are made of a superelastic shape memory material that differs from the above-described urethane block 140 in terms of use and mechanical properties, and the urethane block 140 as shown in FIG. 4. ) Of the tensile deformation (TD) (see Fig. 4 (a)) or compression deformation (CD) (see Fig. 4 (b)) by alternately tensile deformation (TD) and restoration at different positions, in the end, The function of the urethane block 140 is also synergistically supplemented and serves as an intermediary for attenuating the external force over a wider range.

In addition, the first and second shape memory steel bars 160a and 160b may be arranged in a complementary or reinforcing relationship with the first and second coil springs 150a and 150b described above when referring to FIG. 4.

That is, as shown in (a) of Figure 4, when the second coil spring (150b) is compression deformed (CD) by the tensile force (TF) acting on the second shaft (120b), the first shape memory on the opposite side The steel bar 160a is subjected to tensile deformation (TD) sequentially or simultaneously in order to supplement or reinforce the tensile force (TF) acting on the second shaft 120b and exhibit a damping ability. 1 The coil spring 150a is also tensilely deformed (TD) and performs a damping action.

On the other hand, as shown in (b) of FIG. 4, when the second coil spring 150b is tensilely deformed (TD) by the compressive force (CF) acting on the second shaft 120b, the second coil spring 150b on the same side The shape memory steel bar (160b) is subjected to tensile deformation (TD) sequentially or simultaneously in order to supplement or reinforce the compressive force (CF) acting on the second shaft (120b) and exert a damping ability, and at this time, the opposite side The first coil spring 150a of is compressed and deformed (CD) and performs a damping action.

As a result, as the urethane block 140 and the first and second coil springs 150a and 150b described above together with the first and second shape memory steel bars 160a and 160b are arranged linearly so as to be organically interlocked with each other, the present invention is illustrated in FIG. As shown in Fig. 5(c), it is more synergistically supplemented to have the ability to attenuate the external force over a wide range, and it is possible to exhibit an excellent restoration ability as a whole.

After determining the overall damping range of the damper through the first and second shape memory steel bars 160a and 160b having the largest damping ability, the automatic restoration spring damper 100 according to the embodiment of the present invention described above is determined, and then urethane When the restoring ability is precisely controlled through the block 140 and the first and second coil springs 150a and 150b, each of the damping means interlocks with each other to optimize the damping action sequentially or overlapping with respect to the external force applied to the structure. And the residual displacement can be restored to a minimized state.

On the other hand, the state of use of the automatic restoration spring damper 100 installed in various structures according to an embodiment of the present invention will be briefly described with reference to FIG. 6 as follows.

First, as shown in Figure 6 (a), the automatic restoration spring damper 100 according to the present invention is interlocked with the base isolation support 26 that supports the lower part of the bridge structure 20 in which the vertical load is a problem. It can be installed as much as possible.

At this time, in the case of the rubber-based base isolation support 26, there is a problem that the resistance against vertical load is weak, and in particular, there is a problem that vibration and displacement for the horizontal load are large. In this case, there is a problem that maintenance or replacement is accompanied by deformation due to external force such as an earthquake.

Therefore, by installing the automatic restoration spring damper 100 according to the present invention on one side of the existing seismic isolation support 26, the transverse displacement of the seismic isolation support 26 due to external loads (typhoon, earthquake, etc.) It is possible to appropriately limit so as not to fall out of the support by exceeding the limit state.

And, as shown in Figure 6 (b) and (c), the automatic restoration spring damper 100 according to the embodiment of the present invention, the inverted V-shaped in the main frame such as the beam 12 and the column 14 It can be installed on the frame structure 10 via a gusset 16 used to connect the brace 18, which is a brace 18, which is a reinforcement material of various types, such as a V-shape, a toggle type, etc.

At this time, the gusset 16 basically acts as a fuse for attenuating external forces and frictional behavior in the frame structure 10 having the brace 18, and the automatic restoration spring damper 100 according to the present invention, By removing the residual displacement occurring between (18) and the gusset (16), damage to the frame structure (10) together with the gusset (16) is effectively prevented.

In the above, although specific embodiments of the present invention have been described and illustrated, the present invention is not limited to the described embodiments, and various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and the modified embodiments should be said to belong to the claims of the present invention.

TF: Tensile force TD: Tensile deformation
CF: Compression force CD: Compression deformation
10: frame structure 12: beam
14: pillar 16: gusset
18: brace 20: bridge structure
26: base isolation support
100: automatic recovery spring damper
110: cylinder 112: hollow
114a, 114b: Fixing plate FB: Fixing bolt
120a,120b: first and second shafts 130a, 130b: first and second moving plates
132: sleeve 134: fixing protrusion
140: urethane blocks 150a, 150b: first and second coil springs
160a, 160b: first and second shape memory steel rod N: fixing nut

Claims (5)

A hollow cylinder in which fixing plates are respectively coupled to both ends;
First and second shafts respectively penetrating the fixing plate and sliding according to an external force;
First and second movable plates coupled to ends of the first and second shafts facing each other and sliding along the inside of the cylinder;
A urethane block interposed between the first and second moving plates, elastically deformed according to the sliding of the first and second moving plates, and attenuating an external force; And
Automatic restoration comprising first and second coil springs interposed between the first and second moving plates and the fixed plate facing each other, elastically deformed according to the sliding of the first and second moving plates, and attenuating external forces. Spring damper. The method of claim 1,
The automatic restoration spring damper,
The first and second shape memory steel rods of super elasticity that are respectively installed between the first and second moving plates and the fixed plates and are tensioned or independently tensioned together with the corresponding first and second coil springs to attenuate external forces are further provided. Automatic restoration spring damper comprising a. The method of claim 2,
The first and second shape memory steel bars,
In order to adjust the damping capability against external force, a plurality of the first and second coil springs are separated from each other along the circumference of the first and second coil springs and are detachably installed. The method of claim 1,
The first and second coil springs,
An automatic restoration spring damper, characterized in that the superelastic shape memory alloy is made of a material while being penetrated by the first and second shafts. The method of claim 2,
The first and second shape memory steel bars,
One end is fixed to each of the fixing plate,
After the other end passes through the sleeve installed through the first and second moving plates, it is locked and fixed to the first and second moving plates,
It is characterized in that it is tensioned or independently tensioned together with the corresponding first and second coil springs to attenuate external forces, and when the corresponding first and second coil springs are compressed, they slide against the sleeve and bending deformation is prevented. Restoration spring damper.

Images