CN113356383B - Sleeve type self-resetting damper with shape memory wire and plate set - Google Patents
Sleeve type self-resetting damper with shape memory wire and plate set Download PDFInfo
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- CN113356383B CN113356383B CN202110562198.2A CN202110562198A CN113356383B CN 113356383 B CN113356383 B CN 113356383B CN 202110562198 A CN202110562198 A CN 202110562198A CN 113356383 B CN113356383 B CN 113356383B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
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- Civil Engineering (AREA)
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Prevention Devices (AREA)
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
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 with a shape memory wire and a plate group.
Background
The damper is a device for providing resistance to movement and reducing movement energy. At present, scholars at home and abroad develop dampers with various structures in terms of building structure energy consumption and vibration reduction technology, wherein the dampers mainly comprise a viscoelastic damper, a viscous damper, a friction damper, a mild steel damper and the like. Meanwhile, in the fields of aviation, aerospace, war industry, machinery and the like, the damper is widely applied to solve the problem of engineering vibration control. However, the existing partial damper has the problems that after multiple deformations, the damper structure is permanently deviated, the original shape is difficult to recover, and the subsequent normal use is influenced.
In view of the above, there is a need for a new damper that solves at least some of the above problems.
Disclosure of Invention
The invention mainly aims to provide a sleeve type self-resetting damper with a shape memory wire and a plate group, which aims to solve the technical problem that the damper is deviated after being deformed and is difficult to restore in the prior art.
To achieve the above object, the present invention provides a telescopic self-resetting damper configured with a shape memory wire and a plate group, comprising:
the damper comprises a first anchor plate, a flange steel sleeve arranged on the first anchor plate and a lining sleeve slidably arranged on the flange steel sleeve, wherein a shape memory wire is connected between the first anchor 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 piece is capable of automatically recovering after the external force is removed.
Optionally, the flange steel sleeve and the lining sleeve are matched to form a mortise, and the damper further comprises a shape memory tenon plate clamped in 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.
Optionally, the shape memory tenon plate is bone type tenon plate, bone type tenon plate include the belly section with set up respectively in the joint section at belly section both ends, the width of belly section is less than the width of joint section, the shape of tongue-and-groove with the shape of shape memory tenon plate suits.
Optionally, the tongue-and-groove includes the spread groove and is formed respectively in the joint groove at spread groove both ends, the joint section set up in the joint inslot, the belly section set up in the spread groove, the length of belly section is greater than the length of spread groove.
Optionally, the cross section of the shape memory tenon plate along the longitudinal direction of the damper is a trapezoidal section, and the positions of the two ends of the mortise, which are close to the bottom surface of the mortise, are recessed inwards to form a recessed groove matched with the shape memory tenon plate.
Optionally, 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.
Optionally, the number of the oblong holes is multiple, the oblong holes are uniformly distributed along the circumferential direction of the inner sleeve, and the oblong holes are distributed along the central axis of the inner sleeve in a staggered manner.
Optionally, the shape memory material piece is an arc panel adapted to the shape of the inner sleeve, and a circular hole for the screw to pass through is formed in the arc panel.
Optionally, the flange steel sleeve includes pipe shaft and spacing fender ring, the lining section of thick bamboo includes second anchor board, external steel casing pipe and built-in steel casing pipe, built-in steel casing pipe with pipe shaft sliding connection, external steel casing pipe with the pipe shaft concatenation, the both ends of shape memory line are connected respectively the second anchor board with first anchor board, spacing fender ring with built-in steel casing pipe sets up relatively, so that during the attenuator pressurized, spacing fender ring with built-in steel casing pipe butt.
Optionally, the flanged steel sleeve further comprises a flange plate, the first anchoring plate comprises a concave side and a smooth side surrounding the arrangement, the outer sleeve is mounted on the smooth side, the flange plate and the smooth side are connected through bolts, and the shape memory wire is connected to the concave side.
Optionally, when the damper is applied to vibration reduction of a building bridge, the shape memory material adopts shape memory alloy to provide a shape memory function for the damper, and when the damper is applied to other fields, the shape memory material can be selected from other materials with the shape memory function according to engineering requirements, such as organic shape memory materials and the like.
The invention provides a sleeve type self-resetting damper with a shape memory wire and a plate group, which comprises a first anchoring plate, a flange steel sleeve and a lining sleeve, wherein the flange steel sleeve is arranged on the first anchoring plate, the lining sleeve is slidably arranged on the flange steel sleeve, 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; an outer sleeve is arranged on the other side of the first anchoring plate; the damper comprises 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, wherein when the damper is extruded, the shape memory material piece deforms; the shape memory material member is automatically recoverable after the external force is removed. In the scheme, the shape memory wire is connected between the first anchoring plate and the lining cylinder, so that when the damper is pulled, namely the first anchoring plate and the lining cylinder are far away from each other, the lining cylinder moves back along the flange steel sleeve, the shape memory wire absorbs the energy of vibration and stretches, the vibration damping effect can be achieved, and when external tension is removed, the shape memory wire can gradually return to the initial state without residual deformation due to the unique self-recovery and super-elastic functions of the shape memory wire. Similarly, when the damper is compressed, i.e. when the inner sleeve and the outer sleeve move towards each other, the shape memory material absorbs energy and deforms, so that the damping effect is achieved. And after the vibration disappears, the shape memory material piece can gradually recover to the initial state without participating in deformation due to the super-elastic function and the automatic recovery function of the shape memory material piece. The shape memory material piece and the shape memory wire made of the shape memory material can reduce the input energy of vibration (such as earthquake) to the damper, and can recover the deformation of the damper structure after the external force disappears, and almost no residual deformation exists. Specifically, when the damper is pulled or pressed, the damper can absorb energy through the shape memory wire and the shape memory material piece to deform respectively, so that the vibration is reduced, and after the external force is removed, each structure of the damper can be restored to the initial state without residual deformation by means of the unique automatic restoration function and the super-elastic function of the shape memory material.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a damper according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a damper according to an embodiment of the present invention;
FIG. 3 is an exploded view of the construction of the tensioned working segment of the damper according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken in the direction A-A of FIG. 3;
FIG. 5 is a top view of a tensioned working segment of a damper according to an embodiment of the present invention;
FIG. 6 is an exploded view of the construction of the pressurized working section of the damper according to the embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a pressurized working section of a damper according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view in the direction B-B of FIG. 7;
FIG. 9 is a schematic perspective view of a shape memory tenon plate according to an embodiment of the present invention;
fig. 10 is a schematic perspective view of a first anchoring plate according to an embodiment of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the present invention will be further explained with reference to the accompanying drawings.
1. A liner; 101. a second anchor plate; 102. an external steel sleeve; 103. a steel sleeve is arranged inside; 2. a flanged steel sleeve; 201. a limit stop ring; 202. a flange plate; 203. a tube body; 3. a first anchor plate; 301. smoothing the side; 302. a recessed side; 4. an outer sleeve; 5. a piece of shape memory material; 6. an inner sleeve; 7. a shape memory wire; 8. a screw; 9. a bolt; 10. a shape memory tenon plate; 11. a mortise.
Detailed Description
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, and it is apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that all the directional indicators (such as the upper and lower … …) in the embodiment of the present invention are only used to explain the relative position relationship, movement, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Referring to fig. 1 to 10, the present invention provides a telescopic self-resetting damper configured with a shape memory wire and a plate group, comprising:
the damper comprises a first anchoring plate 3, a flange steel sleeve 2 arranged on the first anchoring plate 3 and a lining sleeve 1 arranged on the flange steel sleeve 2 in a sliding mode, wherein a shape memory wire 7 is connected between the first anchoring plate 3 and the lining sleeve 1, and when the damper is stretched, the shape memory wire 7 is stretched; after the external force is removed, the shape memory wire 7 can automatically recover;
the damper comprises an inner sleeve 6, an outer sleeve 4, a shape memory material piece 5 arranged between the inner sleeve 6 and the outer sleeve 4, and a connecting piece which is used for connecting the inner sleeve 6, the outer sleeve 4 and the shape memory material piece 5 in a penetrating way, wherein when the damper is extruded, the shape memory material piece 5 is deformed; the shape memory material piece 5 is able to automatically recover after the external force is removed.
It should be noted that, in the existing energy dissipation and shock absorption technology for buildings, the dampers mainly include viscoelastic dampers, viscous dampers, friction dampers, mild steel dampers, and the like. The application of the viscoelastic damper in structural engineering needs to overcome the degradation phenomena of fatigue resistance, aging resistance, durability and mechanical property, and is greatly influenced by temperature and vibration frequency; the viscous damper is difficult to process and manufacture, the viscous fluid is easy to leak, and the maintenance cost is high; the friction damper has the disadvantages that under the action of constant positive pressure, the two materials are kept in static contact for a long time, cold bonding or cold solidification is generated, the expected friction coefficient is changed, so that the friction device is degraded, and permanent deviation is generated after an earthquake, so that maintenance and protection are required. Therefore, the development of the damper with a good quality structure is of great significance.
In the above embodiment of the present invention, when the damper is applied to the energy dissipation and shock absorption engineering of the building, the shape memory wire 7 and the shape memory material piece 5 are both made of the shape memory alloy material, the shape memory alloy is a material composed of more than two metal elements and having the shape memory effect through the thermoelasticity and the martensite phase transformation and inversion thereof, and the shape memory alloy is the material with the best shape memory performance in the existing shape memory materials. The shape memory alloy is an intelligent material with shape memory effect and super-elasticity characteristic, and also has good deformation ductility and excellent fatigue resistance. When the self-resetting memory alloy damper manufactured by the damper is used for energy dissipation and vibration reduction, external energy input is not needed, and the input energy of vibration (such as earthquake) to the structure can be reduced by utilizing the energy dissipation mechanism of the damper and the shape memory effect and the superelasticity of the material, so that the deformation of the structure can be recovered, and almost no residual deformation exists.
Specifically, by connecting the shape memory wire 7 between the first anchor plate 3 and the liner 1, 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 that the liner 1 moves outward along the flanged steel sleeve 2, and at this time, the shape memory wire 7 absorbs energy to be stretched, and can play a role of vibration damping, and when the external pulling force is removed, it can gradually return to the initial state without residual deformation due to the unique self-recovery and super-elastic functions of the shape memory wire 7. Similarly, when the damper is compressed, i.e. when the inner sleeve 6 and the outer sleeve 4 move towards each other, the shape memory material 5 absorbs energy and deforms, thereby playing a role of damping. And after the vibration disappears, the shape memory material member 5 can be gradually restored to the initial state without participating in the deformation due to the super-elastic function and the self-restoring function thereof. In this embodiment, the shape memory material 5 and the shape memory wire 7 made of the shape memory alloy can reduce the input energy of vibration (such as earthquake) to the damper, and can recover the deformation of the damper structure after the external force (vibration) disappears. Specifically, when the damper is pulled or pressed, energy can be absorbed by the shape memory wire 7 and the shape memory material piece 5 respectively to generate deformation, so that the vibration can be reduced, and after the external force is removed, each structure of the damper can be restored to the initial state without residual deformation by virtue of the unique self-restoring function and the super-elastic function of the shape memory material.
The alloy memory material can be titanium-nickel alloy, copper-aluminum alloy, copper-tin alloy, copper-zinc alloy or iron-manganese-silicon alloy, and a person skilled in the art can make a proper choice according to actual needs and considering both the manufacturing cost and the performance requirements of the damper. A plurality of shape memory wires 7 can also be arranged and wound to form the shape memory alloy stranded wire.
Further, referring to fig. 2-4, the shape memory wires 7 may be disposed in the flanged steel sleeve 2, and the number of the shape memory wires 7 may be multiple, so that the diameter and the number of the shape memory wires 7 may be reasonably set according to actual requirements of the engineering, and only the shape memory wires 7 need to be symmetrically and uniformly distributed along the center of the flanged steel sleeve 2. The central symmetry is provided to ensure uniform force.
Further, referring to fig. 1-5, the flange steel sleeve 2 and the lining sleeve 1 are matched to form a mortise 11, the damper further comprises a shape memory tenon plate 10 clamped in the mortise 11, and when the damper is stretched, and the flange steel sleeve 2 and the lining sleeve 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 automatically recover so that when the flanged steel sleeve 2 and the lining sleeve 1 are far away from each other, the shape memory tenon plate 10 is stretched to absorb energy and provide the recovery capability. Specifically, the lining sleeve 1 and the flange steel sleeve 2 are both formed with recessed positions, and the lining sleeve and the flange steel sleeve are spliced together to form the mortise 11. The shape memory tenon plate 10 is also made of shape memory alloy materials, when the damper is pulled, the flange steel sleeve 2 and the lining sleeve 1 are relatively far away, and two sunken positions respectively distributed in the mortise 11 of the lining sleeve 1 and the shape memory wire 7 are separated from each other, so that the shape memory tenon plate 10 originally installed in the mortise 11 is stretched. And the shape-memory tenon plate 10 can absorb energy when it is stretched. Specifically, energy of the damper being stretched by vibration can be absorbed; also, since the shape-memory tenon plate is made of the shape-memory material, it can be restored to the original state without residual deformation depending on its own elastic property and self-restoring property after the external force is removed or disappears. The embodiment increases the tensile strength of the damper by adding the shape memory tenon plate 10 to be matched with the shape memory wire 7, and simultaneously can reduce the installation number of the shape memory wire 7 and reduce the manufacturing cost and the manufacturing difficulty.
Further, referring to fig. 3 and 4 again, the shape memory tenon plate 10 is a bone-shaped tenon plate, the bone-shaped tenon plate includes a belly section and clamping sections respectively disposed at two ends of the belly section, a width of the belly section is smaller than a width of the clamping sections, and a shape of the mortise 11 is adapted to a shape of the shape memory tenon plate 10. The two clamping sections are used for being clamped at two ends of the mortise 11 respectively, when the lining cylinder 1 and the flange steel sleeve 2 are far away from each other, the two clamping sections move along with the lining cylinder 1 and the flange steel sleeve 2 respectively, and the belly section deforms due to tension, so that the bone-shaped tenon plate deforms to absorb energy and vibration of the damper is reduced. When the external force is removed or disappears, the bone-type tenon plate is restored to be deformed to pull the bushing 1 and the flange steel bushing 2 back to the original positions. Of course, the structure of the shape memory tenon plate 10 is not particularly limited, as long as the shape memory tenon plate 10 can be stretched to absorb energy when the flanged steel sleeve 2 and the lining sleeve 1 are relatively far away. For example, the tenon plate can be set to be in a shape with a small middle and two large ends, specifically, the tenon plate can be in a bone shape, an I-shaped shape or a long strip shape arranged in the middle, and the two ends can be set to be in a triangle or trapezoid shape.
Further, referring to fig. 3-5 and 9, the mortise 11 includes a connection groove and clamping grooves formed at two ends of the connection groove, respectively, the clamping section is disposed in the clamping groove, the web section is disposed in the connection groove, and the length of the web section is greater than that of the connection groove. The length of belly section is greater than the length of spread groove, and the design makes when the attenuator is at first pulled, and bushing 1 and flange steel sleeve 2 keep away from relatively, and shape memory tenon board 10 can not take place deformation and absorption energy immediately, but through the tensile energy of vibration of shape memory line 7 earlier, when shape memory line 7 stretched to a certain degree, when joint groove and joint section butt promptly, shape memory tenon board 10 just can receive the tensile and warp.
Further, referring to fig. 4 and 9, the cross section of the shape memory tenon plate 10 along the longitudinal direction of the damper is a trapezoidal section, and the two ends of the mortise 11 near the bottom surface of the mortise 11 are recessed inwards to form a recessed groove matched with the shape memory tenon plate 10. The design makes shape memory tenon board 10 and tongue-and-groove 11 joint closely to prevent shape memory tenon board 10 when the attenuator is drawn the in-process, bushing 1 and flanged steel sleeve 2 when moving back to back, shape memory tenon board 10 from the tongue-and-groove 11 landing.
Further, referring to fig. 6-8, the connecting member is a screw 8, the screw 8 penetrates through the outer sleeve 4, the shape memory material 5 and the inner sleeve 6, the inner sleeve 6 is provided with a slotted hole for the screw 8 to slide, and the shape memory material 5 and one end of the inner sleeve 6 close to the first anchoring plate 3 are fixedly connected. Specifically, the shape memory material piece 5 is fixedly welded to one end of the inner sleeve 6 near the first anchor plate 3. When the damper is pulled, the inner sleeve 6 and the outer sleeve 4 move back to back in the axial direction, meanwhile, the lining sleeve 1 and the flange steel sleeve 2 move back to back, at the moment, the long round hole of the inner sleeve 6 abuts against the high-strength screw 8, and the shape memory material does not play a role; when the damper is pressed, the inner sleeve 6 and the outer sleeve 4 move oppositely along the axial direction, the high-strength screw 8 and the outer sleeve 4 move cooperatively, at the moment, the inner sleeve 6 is provided with the long circular hole, the welding end of the shape memory material piece 5 and the inner sleeve 6 move cooperatively, and the hole end of the high-strength screw 8 is stretched under the action of the high-strength screw 8 under the tensile force, so that the deformation of the damper when the damper is pressed is concentrated on the shape memory material piece 5. This embodiment is advantageous for reducing vibrations by absorbing energy by deforming the shape memory material piece 5 when compressed. Moreover, the shape memory material piece 5 is also made of shape memory alloy material, and can be restored to the original shape and position after the external pressure is removed or disappears, so that the problem of permanent deviation of the damper structure is avoided.
Further, referring to fig. 6, the number of the oblong holes is multiple, the plurality of oblong holes are uniformly distributed along the circumferential direction of the inner sleeve 6, and the plurality of oblong holes are distributed along the central axis direction of the inner sleeve 6 in a staggered manner. Specifically, a shape memory material piece 5 is correspondingly arranged in one oblong hole, and a plurality of round holes are uniformly distributed along the circumferential direction of the inner sleeve 6, so that the shape memory material piece 5 is uniformly distributed in the circumferential direction of the inner sleeve 6, and vibration energy can be absorbed from each circumferential position, and the vibration effect is further reduced. The plurality of the oblong holes are distributed along the central axis direction of the inner sleeve 6 in a staggered manner, so that holes are formed in four directions in the same cross section, the stress performance of the cross section is weakened, and the stable working performance of the inner sleeve 6 under stress is effectively ensured.
Further, referring to fig. 6 again, the shape memory material 5 is a cambered plate with a shape corresponding to the shape of the inner sleeve 6, and the distributed cambered plate is provided with a circular hole for the screw 8 to pass through. Certainly, the outer sleeve 4 is also provided with a through hole corresponding to the round hole for the screw 8 to pass through, and the round hole and the through hole are mainly used for facilitating the installation of the screw 8 and providing conditions for the deformation of the shape memory material piece 5 when the damper is pressed.
Further, referring to fig. 1-4, the flanged steel sleeve 2 includes a pipe body 203 and a limit stop ring 201, the bushing 1 includes a second anchoring plate 101, an external steel sleeve 102 and an internal steel sleeve 103, the internal steel sleeve 103 is slidably connected with the pipe body 203, the external steel sleeve 102 is spliced with the pipe body 203, two ends of the shape memory wire 7 are respectively connected with the second anchoring plate 101 and the first anchoring plate 3, and the limit stop ring 201 is arranged opposite to the internal steel sleeve, so that when the damper is pressed, the limit stop ring 201 is abutted to the internal steel sleeve. When the damper is pulled, the flange steel sleeve 2 and the lining sleeve 1 move oppositely, at the moment, the limit baffle ring 201 is in contact and abutted with the built-in steel sleeve, the shape memory wire 7 cannot play a role without being stressed, and the shape memory material piece 5 absorbs energy to damp vibration.
Referring to fig. 1-2 and 10, further, the flanged steel sleeve 2 further includes a flange plate 202, the first anchor plate 3 includes a concave side 302 and a smooth side 301 disposed around the concave side 302, the flange plate 202 and the smooth side 301 are connected by bolts 9, the shape memory wire 7 is connected to the concave side 302, the outer sleeve 6 is mounted on the smooth side 301, the concave side 302 is provided with an opening section for mounting the shape memory wire 7, and the second anchor plate 101 is also provided with an opening position for mounting the shape memory wire 7 at a corresponding position. Specifically, the flanged steel sleeve 2 and the lining sleeve 1 are disposed on one side of the first anchoring plate 3, the outer sleeve 4 is cylindrically connected to the smooth side 301, and the inner sleeve 6, the outer sleeve 4 and the shape memory material 5 are disposed on the other side of the first anchoring plate 3.
Further, when the damper is applied to vibration reduction of a building bridge, the shape memory material adopts shape memory alloy to provide a shape memory function for the damper, and when the damper is applied to other fields, the shape memory material can be made of other materials with the shape memory function according to engineering requirements, such as organic shape memory materials and the like.
The movement and functioning of the various components of the damper of the present invention when in tension and compression will now be described in detail. Wherein, the components of the tension working section comprise a lining sleeve 1, a flange steel sleeve 2, a first anchoring plate 3, a tenon plate 10 and a shape memory wire 7; the components of the pressurized working section include an outer sleeve 4, an inner sleeve 6, a first anchor plate 3, a threaded rod 8 and a piece of shape memory material 5. When the damper is pulled, the inner sleeve 6 and the outer sleeve 4 move back to back in the axial direction, meanwhile, the lining sleeve 1 and the flange steel sleeve 2 move back to back, at the moment, the long round hole of the inner sleeve 6 abuts against the high-strength screw 8, the shape memory material piece 5 does not play a role, the shape memory line 7 is pulled, when the shape memory line 7 is pulled to a certain distance, the clamping groove of the mortise 11 is in contact and abutting against the clamping section of the shape memory tenon plate 10, the shape memory tenon plate 10 is pulled, and the shape memory tenon plate and the shape memory line 7 bear the pulling force together to play a role in reducing vibration; when the damper is pressed, the lining cylinder 1 is abutted against the limit stop ring 201 of the flange steel sleeve 2, and the tension working section does not play a role. The inner sleeve 6 and the outer sleeve 4 of the compression working section move oppositely along the axial direction, the high-strength screw 8 and the outer sleeve 4 move in a coordinated mode, at the moment, the slotted hole is formed in the inner sleeve 6, the welding end of the shape memory material piece 5 and the inner sleeve 6 move in a coordinated mode, and the hole end of the high-strength screw is stretched under the action of the high-strength screw 8 to ensure that deformation of the damper when compressed is concentrated on the shape memory material piece 5. The damper is constructed in a special way so that when the device is in tension or compression, the forces are transmitted by the different elements. In particular, the deformation of the damper by force is transformed into an axial deformation of the shape memory wire 7, the shape memory tenon plate 10 or the shape memory material piece 5, so that the device has a better energy consumption mechanism. The shape memory wire 7, the shape memory tenon plate 10 and the shape memory material piece 5 used by the damper have a self-resetting function, and can be restored to an initial position after external force disappears or is removed, so that the deformation of the damper structure can be obviously reduced. Moreover, the main stressed components of the damper are convenient to install and easy to maintain and detect.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical spirit of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope 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.
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| CN202110562198.2A CN113356383B (en) | 2021-05-24 | 2021-05-24 | Sleeve type self-resetting damper with shape memory wire and plate set |
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| CN202110562198.2A CN113356383B (en) | 2021-05-24 | 2021-05-24 | Sleeve type self-resetting damper with shape memory wire and plate set |
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| CN113356383B true CN113356383B (en) | 2022-08-26 |
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| CN115405660B (en) * | 2022-10-10 | 2024-05-17 | 重庆大学 | Fishbone bionic energy-consumption supporting device and energy-consumption and shock-absorption method |
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