CN113356383B - Sleeve type self-resetting damper with shape memory wire and plate set - Google Patents

Abstract

The invention discloses a sleeve type self-resetting damper with a configuration shape memory wire and a plate group, which comprises a first anchoring plate, a flange steel sleeve arranged on the first anchoring plate and a lining sleeve slidably arranged on the flange steel sleeve, wherein the shape memory wire is connected between the first anchoring plate and the lining sleeve, and when the damper is stretched, the shape memory wire is stretched; after the external force is removed, the shape memory wire can automatically recover; the other side of the first anchoring plate is provided with an outer sleeve, an inner sleeve, a shape memory material piece arranged between the inner sleeve and the outer sleeve and a connecting piece for connecting the inner sleeve, the outer sleeve and the shape memory material piece, and when the damper is extruded, the shape memory material piece deforms; the shape memory material member is capable of automatically recovering after the external force is removed. The damper has the advantages that the damper can be automatically recovered after being deformed, and the structure of the damper can not be dislocated due to deformation.

Description

A sleeve type self-resetting damper equipped with shape memory wire and plate group

technical field

The invention belongs to the technical field of engineering energy consumption and vibration reduction, such as structural engineering, mechanical engineering and underground engineering, and particularly relates to a sleeve type self-resetting damper equipped with a shape memory wire and a plate group.

Background technique

A damper is a device that provides resistance to movement to reduce movement energy. At present, domestic and foreign scholars have developed various structural dampers on the energy consumption and vibration reduction technology of building structures, mainly including viscoelastic dampers, viscous dampers, friction dampers and mild steel dampers. At the same time, in aviation, aerospace, military, machinery and other fields, dampers have also been widely used to solve engineering vibration control problems. However, some existing dampers have the problem that the damper structure is permanently displaced after multiple deformations, and it is difficult to return to the original state, which affects the subsequent normal use.

In view of this, it is necessary to provide a new type of damper, which has solved at least some of the above-mentioned technical problems.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a sleeve-type self-resetting damper equipped with a shape memory wire and a plate group, so as to solve the technical problem that the damper is displaced after deformation and is difficult to restore to the original state in the prior art.

In order to achieve the above purpose, the present invention provides a sleeve-type self-resetting damper configured with a shape memory wire and a plate group, including:

a first anchor plate, a flanged steel sleeve mounted on the first anchor plate, and a liner slidably mounted on the flanged steel sleeve, between the first anchor plate and the liner A shape memory wire is connected, and when the damper is stretched, the shape memory wire is stretched; after the external force is removed, the shape memory wire can be automatically restored;

The other side of the first anchoring plate is provided with an outer sleeve, an inner sleeve, a shape memory material piece installed between the inner sleeve and the outer sleeve, and connecting the inner sleeve and the outer sleeve When the damper is squeezed, the shape memory material piece is deformed; after the external force is removed, the shape memory material piece can automatically recover.

Optionally, a tongue groove is formed between the flange steel sleeve and the liner, and the damper further includes a shape memory tenon plate that is clamped to the tongue groove; when the damper is stretched , when the flange steel sleeve and the liner are far away from each other, the shape memory tenon plate can be stretched to absorb energy; after the external force is removed, the shape memory tenon plate can be automatically restored.

Optionally, the shape memory tenon board is a bone-type tenon board, and the bone-type tenon board includes an abdominal segment and a snap-on segment respectively disposed at both ends of the abdominal segment, and the width of the abdominal segment is smaller than the snap-on segment. The width of the segment, the shape of the tongue and groove is adapted to the shape of the shape memory tongue.

Optionally, the tongue groove includes a connection groove and a snap-fit slot formed at both ends of the connection slot, the snap-fit segment is arranged in the snap-fit slot, and the abdomen segment is arranged in the connection slot , the length of the abdominal segment is greater than the length of the connecting groove.

Optionally, the cross section of the shape memory tenon plate along the longitudinal direction of the damper is a trapezoidal cross section, and the positions of the two ends of the tenon groove close to the bottom surface of the tenon groove are recessed inward to form a connection with the shape memory tenon plate. mating recessed grooves.

Optionally, the connecting member is a screw, the screw penetrates the outer sleeve, the shape memory material piece and the inner sleeve, the inner sleeve is provided with an oblong hole for the screw to slide, and the shape The memory material piece is fixedly connected with one end of the inner sleeve close to the first anchor plate.

Optionally, the number of the oblong holes is multiple, the multiple oblong holes are evenly distributed along the circumferential direction of the inner sleeve, and the multiple oblong holes are along the central axis direction of the inner sleeve. Dislocation distribution.

Optionally, the shape memory material piece is an arc panel adapted to the shape of the inner sleeve, and the arc panel is provided with a circular hole through which the screw rod passes.

Optionally, the flanged steel sleeve includes a pipe body and a limit stop ring, the liner includes a second anchor plate, an external steel sleeve, and an internal steel sleeve, the internal steel sleeve and the The pipe body is slidably connected, the external steel sleeve is spliced with the pipe body, the two ends of the shape memory wire are respectively connected to the second anchor plate and the first anchor plate, and the limit stop ring It is arranged opposite to the built-in steel sleeve, so that when the damper is pressed, the limit stop ring is in abutment with the built-in steel sleeve.

Optionally, the flanged steel sleeve further includes a flange plate, the first anchor plate includes a concave side and a smooth side arranged around the set, the outer sleeve is mounted on the smooth side, and the method The blue plate is connected with the smooth side by bolts, and the shape memory wire is connected with the concave side.

Optionally, when the damper is applied to building bridges for vibration reduction, the shape memory material adopts a shape memory alloy to provide the damper with a shape memory function. When the damper is used in other fields, the shape memory material can be selected according to engineering requirements. Materials with shape memory function, such as organic shape memory materials, etc.

A sleeve type self-resetting damper configured with a shape memory wire and a plate set proposed by the present invention includes a first anchor plate, a flange steel sleeve installed on the first anchor plate, and a flange steel sleeve slidably installed on the flange steel plate. In the liner of the sleeve, a shape memory wire is connected between the first anchor plate and the liner. When the damper is stretched, the shape memory wire is stretched; after the external force is removed, the shape memory wire can be automatically restored; the first anchor plate An outer sleeve is installed on the other side; the inner sleeve, the shape-memory material piece arranged between the inner sleeve and the outer sleeve, and the connecting piece connecting the inner sleeve, the outer sleeve and the shape-memory material piece, in the damping When the device is squeezed, the shape memory material is deformed; after the external force is removed, the shape memory material can automatically recover. In the above solution, a shape memory wire is connected between the first anchor plate and the liner, so that when the damper is pulled, that is, when the first anchor plate and the liner are far away from each other, the liner will appear along the flange. The steel sleeves move opposite each other. At this time, the shape memory wire absorbs the energy of vibration and stretches, which can play a role in reducing vibration. When the external tension is removed, due to the unique automatic recovery and superelasticity function of the shape memory wire, it can gradually Return to the initial state without residual deformation. Similarly, when the damper is under pressure, that is, when the inner sleeve and the outer sleeve move toward each other, the shape memory material absorbs energy and deforms to reduce vibration. When the vibration disappears, due to the superelastic function and automatic recovery function of the shape memory material, it can gradually return to the initial state without participating in the deformation. The invention adopts the shape memory material and the shape memory wire made of the shape memory material, which can not only reduce the input energy of vibration (such as earthquake) to the damper, but also restore the deformation of the damper structure after the external force disappears. residual deformation. Specifically, when the damper is under tension or compression, it can absorb energy and deform through the shape memory wire and the shape memory material, respectively, so as to reduce the vibration, and after the external force is removed, the shape memory material can also be used The unique automatic recovery function and superelasticity function make the structures of the damper return to the initial state without residual deformation.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

1 is a schematic three-dimensional structure diagram of a damper according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional structural diagram of a damper according to an embodiment of the present invention;

3 is an exploded view of the structure of the tension working section of the damper according to the embodiment of the present invention;

4 is a cross-sectional view of FIG. 3 in the direction A-A;

FIG. 5 is a top view of the tension working section of the damper according to the embodiment of the present invention;

6 is an exploded view of the structure of the pressurized working section of the damper according to the embodiment of the present invention;

7 is a schematic structural diagram of a pressurized working section of a damper according to an embodiment of the present invention;

8 is a cross-sectional view of FIG. 7 in the direction B-B;

9 is a schematic three-dimensional structure diagram of a shape memory tenon board according to an embodiment of the present invention;

FIG. 10 is a schematic three-dimensional structure diagram of the first anchoring plate according to the embodiment of the present invention.

Description of reference numbers:

The realization, functional features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

1. Liner; 101, Second anchor plate; 102, External steel sleeve; 103, Built-in steel sleeve; 2, Flange steel sleeve; 201, Limit stop ring; 202, Flange plate; 203, Pipe body; 3. First anchor plate; 301, smooth side; 302, concave side; 4, outer sleeve; 5, shape memory material; 6, inner sleeve; 7, shape memory wire; 8, screw rod; 9 , bolts; 10, shape memory tenon plate; 11, tenon and groove.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship, movement situation, etc. If the specific posture changes, the directional indication changes accordingly.

In addition, descriptions such as "first", "second", etc. in the present invention are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

1-10, the present invention provides a sleeve-type self-resetting damper configured with a shape memory wire and a plate assembly, including:

The first anchor plate 3, the flange steel sleeve 2 installed on the first anchor plate 3, and the liner 1 slidably installed on the flange steel sleeve 2, the first anchor plate 3 and the liner 1 are connected There is a shape memory wire 7, when the damper is stretched, the shape memory wire 7 is stretched; after the external force is removed, the shape memory wire 7 can be automatically restored;

The inner sleeve 6, the outer sleeve 4, the shape memory material piece 5 disposed between the inner sleeve 6 and the outer sleeve 4, and the connection connecting the inner sleeve 6, the outer sleeve 4 and the shape memory material piece 5 through When the damper is squeezed, the shape memory material piece 5 is deformed; after the external force is removed, the shape memory material piece 5 can automatically recover.

It should be noted that in the existing technologies for building energy consumption and shock absorption, the dampers mainly include viscoelastic dampers, viscous dampers, friction dampers and mild steel dampers. The application of viscoelastic dampers in structural engineering still needs to overcome phenomena such as anti-fatigue, anti-aging, durability, and mechanical properties degradation, which are greatly affected by temperature and vibration frequency; viscous dampers are difficult to manufacture and viscous The fluid is prone to leakage, and the maintenance cost is high; the disadvantage of the friction damper is that under the action of constant positive pressure, the two materials maintain long-term static contact, which will cause cold bonding or cold solidification, and the desired friction coefficient will occur. Changes, resulting in degradation of friction devices, permanent deflection after earthquakes, and the need for repair and protection. Therefore, it is of great significance to develop dampers with high-quality structures.

In the above-mentioned embodiment of the present invention, when the damper is applied to the building energy consumption and shock absorption project, the shape memory wire 7 and the shape memory material member 5 are both made of shape memory alloy material, and the shape memory alloy is formed by thermal elasticity and martensite. A material composed of two or more metal elements that has a shape memory effect due to phase transition and its inversion, and a shape memory alloy is currently the material with the best shape memory performance among the shape memory materials. Shape memory alloys are smart materials with shape memory effect and superelastic properties, as well as good deformation ductility and superior fatigue resistance. When the self-resetting memory alloy damper made of it is used for energy dissipation and vibration reduction, no external energy input is required, and the vibration can be reduced by using the energy dissipation mechanism of the damper itself and the shape memory effect and superelasticity of the material (such as Earthquake) input energy to the structure, so that the deformation of the structure can be recovered with almost no residual deformation.

Specifically, the shape memory wire 7 is connected between the first anchor plate 3 and the liner 1, so that when the damper is pulled, that is, when the first anchor plate 3 and the liner 1 are far away from each other, it appears as a liner 1 moves outward along the flange steel sleeve 2, at this time the shape memory wire 7 absorbs energy and stretches, which can play a role in reducing vibration, and when the external tension is removed, due to the unique automatic recovery and Hyperelastic function, able to gradually recover to the initial state without residual deformation. Similarly, when the damper is compressed, that is, when the inner sleeve 6 and the outer sleeve 4 move toward each other, the shape memory material 5 absorbs energy and deforms, which can reduce vibration. And when the vibration disappears, due to the superelastic function and the automatic recovery function of the shape memory material 5, it can gradually return to the initial state without participating in the deformation. In this embodiment, the shape memory material member 5 and the shape memory wire 7 made of shape memory alloy can not only reduce the input energy of vibration (such as earthquake) to the damper, but also make the damper after the external force (vibration) disappears. The deformation of the structure is recovered. Specifically, when the damper is under tension or compression, it can absorb energy through the shape memory wire 7 and the shape memory material piece 5 and deform to reduce the vibration. The unique self-recovery function and superelasticity function of the memory material make the structures of the damper return to the initial state without residual deformation. This embodiment has the advantage of not causing permanent dislocation of the damper structure due to deformation.

The above-mentioned alloy memory material can be titanium-nickel alloy, copper-aluminum alloy, copper-tin alloy, copper-zinc alloy or iron-manganese-silicon alloy, and those skilled in the art can make appropriate choices according to actual needs, taking into account the production cost and the performance requirements of the damper . A plurality of shape memory wires 7 can also be arranged to be wound to form a shape memory alloy strand.

Further, please refer to FIG. 2-FIG. 4, the shape memory wire 7 can be arranged in the flange steel sleeve 2, and the number of the shape memory wire 7 can be multiple, and the shape memory wire 7 can be reasonably set according to the actual needs of the project. The diameter and quantity of the SMA wires 7 only need to be symmetrical and evenly distributed along the center of the flanged steel sleeve 2 . It is set to be centrally symmetric to ensure uniform force.

Further, please refer to FIG. 1 to FIG. 5 , the flange steel sleeve 2 cooperates with the bushing 1 to form a tenon groove 11 , and the damper also includes a shape memory tenon plate 10 that is clamped in the tenon groove 11 . When the damper is pulled When extending, when the flange steel sleeve 2 and the liner 1 are far away from each other, the shape memory tenon plate 10 can be stretched to absorb energy; after the external force is removed, the shape memory tenon plate 10 can be automatically restored so that the flange steel sleeve 2 and the When the bushings 1 move away from each other, the shape memory tenon 10 is stretched to absorb energy and provide resilience. Specifically, both the liner 1 and the flange steel sleeve 2 are formed with concave positions, and the two are joined together to form a tenon groove 11 . The shape memory tenon plate 10 is also made of shape memory alloy material. When the damper is pulled, the flange steel sleeve 2 and the liner 1 are relatively far away, and are distributed in the grooves 11 of the liner 1 and the shape memory wire 7 respectively. The two recesses are separated from each other, so that the shape memory tongue 10 originally installed in the tongue groove 11 is stretched. The shape memory tenon 10 can absorb energy when stretched. Specifically, the energy of the damper being stretched due to vibration can be absorbed; similarly, since the shape memory tenon plate is made of shape memory material, after the external force is removed or disappeared, it can recover by relying on its own elastic properties and self-recovery properties To the initial state, there is no residual deformation. In this embodiment, by increasing the shape memory tenon plate 10 to cooperate with the shape memory wire 7 to increase the tensile performance of the damper, at the same time, the installation quantity of the shape memory wire 7 can be reduced, and the manufacturing cost and manufacturing difficulty can be reduced.

Further, please refer to FIG. 3 and FIG. 4 again, the shape memory tenon board 10 is a bone-type tenon board, and the bone-type tenon board includes an abdominal segment and a snap-on segment respectively disposed at both ends of the abdominal segment, and the width of the abdominal segment is smaller than the snap-on segment. The width of the tongue groove 11 is adapted to the shape of the shape memory tongue plate 10 . The two clamping segments are used to be clamped on both ends of the tenon groove 11 respectively. When the liner 1 and the flange steel sleeve 2 are away from each other, the two clamping segments follow the liner 1 and the flange steel sleeve respectively. The cylinder 2 moves, and the abdominal segment is deformed due to the tension, so as to realize the deformation of the bone-shaped tenon plate to absorb energy and reduce the vibration of the damper. When the external force is removed or disappeared, the bone-type tenon plate restores the deformation and pulls the liner 1 and the flange steel sleeve 2 back to the original position. Of course, the structure of the shape memory tenon 10 is not specifically limited here, as long as the shape memory tenon 10 can be stretched to absorb energy when the flange steel sleeve 2 and the liner 1 are relatively far away. For example, the tenon plate can be arranged in a shape with a small middle and two large ends, specifically a bone shape, a work shape, or a long strip in the middle, and the two ends can be arranged in a triangle or a trapezoid.

Further, please refer to FIG. 3-FIG. 5 and FIG. 9 , the tenon groove 11 includes a connecting groove and a clamping groove formed at both ends of the connecting groove, the clamping section is arranged in the clamping groove, and the abdomen section is arranged in the connecting groove, The length of the abdominal segment is greater than the length of the connecting slot. The length of the abdominal section is greater than the length of the connecting groove, so that when the damper is initially tensioned, the bushing 1 and the flange steel sleeve 2 are relatively far apart, and the shape memory tenon plate 10 will not deform and absorb energy immediately, but First, the shape memory wire 7 is stretched to absorb the energy of the vibration. When the shape memory wire 7 is stretched to a certain extent, that is, when the clamping groove and the clamping segment are in contact, the shape memory tenon plate 10 will be stretched. deformed.

Further, please refer to FIG. 4 and FIG. 9 , the cross section of the shape memory tenon plate 10 along the longitudinal direction of the damper is a trapezoidal section, and the positions at both ends of the tenon groove 11 close to the bottom surface of the tenon groove 11 are recessed inward to form the same shape as the shape memory tenon plate. 10 Mating recessed grooves. In this way, the shape memory tenon plate 10 is tightly connected with the tenon groove 11 to prevent the shape memory tenon plate 10 from moving away from the bushing 1 and the flange steel sleeve 2 during the tension process of the damper. 10 slips out of the tongue and groove 11.

Further, please refer to FIG. 6-FIG. 8, the connecting member is a screw 8, the screw 8 penetrates the outer sleeve 4, the shape memory material piece 5 and the inner sleeve 6, and the inner sleeve 6 is provided with an oblong hole for the screw 8 to slide. , the shape memory material piece 5 is fixedly connected with one end of the inner sleeve 6 close to the first anchor plate 3 . Specifically, the shape memory material piece 5 is fixedly welded to one end of the inner sleeve 6 close to the first anchor plate 3 . When the damper is pulled, the inner sleeve 6 and the outer sleeve 4 move away from each other in the axial direction, and at the same time the liner 1 and the flange steel sleeve 2 move away from each other. At this time, the oblong hole of the inner sleeve 6 and the high strength When the damper is pressed, the inner sleeve 6 and the outer sleeve 4 move toward each other in the axial direction, and the high-strength screw 8 and the outer sleeve 4 move in concert. The sleeve 6 is provided with an oblong hole, the welding end of the shape memory material piece 5 moves in coordination with the inner sleeve 6, and the hole end of the high-strength screw 8 is stretched under the action of the high-strength screw 8 to ensure the deformation of the damper under pressure. Concentrate on the piece 5 of shape memory material. This embodiment absorbs energy by deforming the shape memory material 5 under pressure, which is beneficial to reduce vibration. Moreover, the shape memory material member 5 is also made of shape memory alloy material, which can be restored to its original shape and position after the external pressure is removed or disappeared, and the damper structure will not be permanently displaced.

Further, please refer to FIG. 6 , the number of oblong holes is multiple, the multiple oblong holes are evenly distributed along the circumferential direction of the inner sleeve 6 , and the multiple oblong holes are distributed along the central axis of the inner sleeve 6 staggered. Specifically, one oblong hole is correspondingly provided with a shape memory material piece 5 , and the plurality of circular holes are evenly distributed along the circumferential direction of the inner sleeve 6 , in order to make the shape memory material piece 5 evenly distributed in the circumferential direction of the inner sleeve 6 , thereby ensuring that vibration energy can be absorbed from various positions in the circumferential direction, further reducing the vibration effect. The purpose of dislocating the plurality of oblong holes along the central axis of the inner sleeve 6 is to avoid opening holes in four directions in the same cross section, which will weaken the force performance of the cross section and effectively ensure that the inner sleeve 6 is in the same cross section. Stable working performance under stress.

Further, please refer to FIG. 6 again, the shape memory material member 5 is an arc panel adapted to the shape of the inner sleeve 6 , and the distribution arc panel is provided with a circular hole for the screw 8 to pass through. Of course, the outer sleeve 4 is also provided with a through hole corresponding to the round hole for the screw 8 to pass through. The round hole and the through hole are mainly to facilitate the installation of the screw 8. At the same time, it is also for the shape memory of the damper when it is pressed. The deformation of the material piece 5 provides conditions.

Further, please refer to FIG. 1 to FIG. 4 , the flange steel sleeve 2 includes a pipe body 203 and a limit stop ring 201 , and the liner 1 includes a second anchor plate 101 , an external steel sleeve 102 and an internal steel sleeve 103 , the built-in steel sleeve 103 is slidably connected with the pipe body 203, the external steel sleeve 102 is spliced with the pipe body 203, and the two ends of the shape memory wire 7 are respectively connected to the second anchoring plate 101 and the first anchoring plate 3, and the limit stops The ring 201 is disposed opposite to the built-in steel tube sleeve, so that when the damper is pressed, the limit stop ring 201 abuts against the built-in steel tube sleeve. When the damper is pulled, the flange steel sleeve 2 and the liner 1 move toward each other, at this time, the limit stop ring 201 is in contact with the built-in steel sleeve, and the shape memory wire 7 is not subjected to force and will not function, but has The shape memory material 5 absorbs energy and damps vibrations.

1-2 and 10, further, the flange steel sleeve 2 further includes a flange 202, the first anchor plate 3 includes a concave side 302 and a smooth side 301 arranged around, the flange 202 and the smooth side The side 301 is connected by bolts 9, the shape memory wire 7 is connected to the recessed side 302, the outer sleeve 6 is installed on the smooth side 301, and the recessed side 302 is provided with a hole section for installing the shape memory wire 7, and the second anchoring plate 101 corresponds to The location is also provided with the location of the opening where the shape memory wire 7 is installed. Specifically, the flange steel sleeve 2 and the liner 1 are arranged on one side of the first anchor plate 3, the outer sleeve 4 is cylindrically connected to the smooth side 301, the inner sleeve 6, the outer sleeve 4 and the shape memory material The piece 5 is arranged on the other side of the first anchor plate 3 .

Further, when the damper is used for vibration reduction of building bridges, the shape memory material adopts shape memory alloy to provide the damper with a shape memory function. When the damper is used in other fields, the shape memory material can be selected according to engineering requirements. Materials with shape memory functions, such as organic shape memory materials, etc.

The movement and functions of each component when the damper of the present invention is under tension and compression will be described in detail below. The components of the working section under tension include the bushing 1, the flange steel sleeve 2, the first anchor plate 3, the tenon plate 10 and the shape memory wire 7; the components of the working section under pressure include the outer sleeve 4, the inner sleeve 6. The first anchor plate 3 , the screw 8 and the shape memory material piece 5 . When the damper is pulled, the inner sleeve 6 and the outer sleeve 4 move away from each other in the axial direction, and at the same time the liner 1 and the flange steel sleeve 2 move away from each other. At this time, the oblong hole of the inner sleeve 6 and the high strength When the shape memory wire 7 is pulled apart to a certain distance, the clamping groove of the tenon groove 11 and the shape memory tenon plate 10 are clamped. The segments are in contact with each other, the shape memory tenon plate 10 is pulled apart, and the shape memory wire 7 bears the tensile force together to reduce the vibration; On the stop ring 201, the tensioned working section does not function. The inner sleeve 6 and the outer sleeve 4 of the working section under pressure move toward each other in the axial direction, and the high-strength screw 8 and the outer sleeve 4 move in coordination. The inner sleeve 6 moves cooperatively, and the hole end of the high-strength screw is stretched under the action of the high-strength screw 8 to ensure that the deformation of the damper under compression is concentrated on the shape memory material 5 . The damper has a special structure, so that when the device is under tension or compression, the force is transmitted by different elements. Specifically, the force deformation of the damper is transformed into the axial deformation of the shape memory wire 7 , the shape memory tenon 10 or the shape memory material piece 5 , so that the device has a better energy dissipation mechanism. The shape memory wire 7, the shape memory tenon plate 10 and the shape memory material piece 5 used in the damper of the present invention have a self-reset function. When the external force disappears or is removed, it can return to the original position, which can significantly reduce the deformation of the damper structure. . Furthermore, the main force-bearing components of the damper are easy to install and easy to maintain and inspect.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the technical concept of the present invention, any equivalent structural transformations made by using the contents of the description and drawings of the present invention, or directly/indirectly applied to other All relevant technical fields are included in the scope of patent protection of the present invention.

Claims (9)

1. A sleeve type self-resetting damper with a shape memory wire and a plate group is characterized by comprising:

the damper comprises a first anchoring plate, a flange steel sleeve arranged on the first anchoring plate and a lining sleeve which is slidably arranged on the flange steel sleeve, wherein a shape memory wire is connected between the first anchoring plate and the lining sleeve, and when the damper is stretched, the shape memory wire is stretched; after the external force is removed, the shape memory wire can automatically recover;

an outer sleeve, an inner sleeve, a shape memory material piece arranged between the inner sleeve and the outer sleeve and a connecting piece for connecting the inner sleeve, the outer sleeve and the shape memory material piece are arranged on the other side of the first anchoring plate, and when the damper is extruded, the shape memory material piece deforms; after the external force is removed, the shape memory material piece can automatically recover;

the connecting piece is a screw rod, the screw rod penetrates through the outer sleeve, the shape memory material piece and the inner sleeve, the inner sleeve is provided with a slotted hole for the screw rod to slide, and the shape memory material piece is fixedly connected with one end, close to the first anchoring plate, of the inner sleeve;

the shape memory material piece is an arc panel which is matched with the inner sleeve in shape, a round hole for the screw to pass through is formed in the arc panel, and a through hole for the screw to pass through is formed in the outer sleeve and corresponds to the round hole.

2. The damper of claim 1, wherein the flanged steel sleeve and the bushing cooperate to form a mortise, the damper further comprising a shape memory tongue plate snap-fitted into the mortise; when the damper is stretched and the flange steel sleeve and the lining sleeve are far away from each other, the shape memory tenon plate can be stretched to absorb energy; after the external force is removed, the shape memory tenon plate can automatically recover.

3. The damper of claim 2, wherein the shape memory tenon plate is a bone-shaped tenon plate, the bone-shaped tenon plate comprises a belly section and clamping sections respectively arranged at two ends of the belly section, the width of the belly section is smaller than that of the clamping sections, and the shape of the mortise is adapted to the shape of the shape memory tenon plate.

4. The damper of claim 3, wherein the mortise comprises a connecting groove and clamping grooves formed at both ends of the connecting groove, respectively, the clamping section is disposed in the clamping groove, the belly section is disposed in the connecting groove, and the length of the belly section is greater than that of the connecting groove.

5. The damper according to claim 2, wherein the shape memory tongue plate has a trapezoidal cross section in a longitudinal direction of the damper, and both ends of the groove are recessed inward near a bottom surface of the groove to form a recessed groove for fitting with the shape memory tongue plate.

6. The damper according to claim 1, wherein the number of the oblong holes is plural, a plurality of the oblong holes are evenly distributed in a circumferential direction of the inner sleeve, and a plurality of the oblong holes are distributed in a shifted manner in a central axis direction of the inner sleeve.

7. The damper of any one of claims 1 to 6, wherein the flanged steel sleeve comprises a pipe body and a limit stop ring, the bushing comprises a second anchor plate, an external steel sleeve and an internal steel sleeve, the internal steel sleeve is slidably connected with the pipe body, the external steel sleeve is spliced with the pipe body, two ends of the shape memory wire are respectively connected with the second anchor plate and the first anchor plate, and the limit stop ring is arranged opposite to the internal steel sleeve, so that when the damper is pressed, the limit stop ring is abutted against the internal steel sleeve.

8. The damper of claim 7, wherein said flanged steel sleeve further comprises a flange, said first anchor plate comprising a recessed side and a smooth side surrounding said arrangement, said flange being bolted to said smooth side, said outer sleeve being mounted to said smooth side, said shape memory wire being connected to said recessed side.

9. The damper according to claim 1, wherein the shape memory material is a shape memory alloy when the damper is used for vibration damping of a construction bridge.

Images