CN108979282B - Two-way displacement amplification shape memory alloy damper - Google Patents
Two-way displacement amplification shape memory alloy damper Download PDFInfo
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- CN108979282B CN108979282B CN201810852215.4A CN201810852215A CN108979282B CN 108979282 B CN108979282 B CN 108979282B CN 201810852215 A CN201810852215 A CN 201810852215A CN 108979282 B CN108979282 B CN 108979282B
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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
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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
- E04H9/023—Bearing, supporting or connecting constructions specially adapted for such buildings and comprising rolling elements, e.g. balls, pins
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Abstract
The invention discloses a bidirectional displacement amplification shape memory alloy damper, which comprises a box body, wherein a bidirectional displacement amplification device is arranged in the box body, the bidirectional displacement amplification device comprises a moving rod and at least one bidirectional displacement amplification component arranged on the moving rod, the moving rod is connected with the box body in a sliding mode along the left-right direction, the bidirectional displacement amplification component comprises a shape memory alloy wire set, a left amplification component and a right amplification component, the shape memory alloy wire set comprises a plurality of shape memory alloy wires corresponding to each other in position, the shape memory alloy wires are all parallel to the central line of the moving rod, the left amplification component is positioned on the left side of the shape memory alloy wire set and is connected with the left end of the shape memory alloy wires, and the right amplification component is positioned on the right side of the shape memory alloy wire set and is connected with the right end of the shape memory alloy wires. The bidirectional displacement amplification shape memory alloy damper adopts the bidirectional displacement amplification device, and meets the requirement of bidirectional damping of the damper.
Description
Technical Field
The invention relates to the technical field of earthquake resistance and vibration reduction of engineering structures, in particular to a bidirectional displacement amplification shape memory alloy damper.
Background
The action of external excitation such as earthquake, strong wind and the like makes the civil engineering structure easily generate large vibration, and poses serious threats to the safety and comfort of the civil engineering structure. In the face of various vibration disasters occurring in the real environment, it is very important to improve the earthquake resistance, wind resistance and disaster resistance of the engineering structure, and people are also always seeking various methods to effectively reduce and inhibit the damage of the vibration response to the engineering structure. In recent years, various dampers developed by using materials such as viscoelastic materials, viscous fluids and the like have a certain vibration damping effect, but the dampers made of the materials are applied in engineering and still need to overcome the common problems such as fatigue resistance, ageing resistance, durability, corrosion resistance, possible leakage phenomenon of the fluid dampers and the like. The shape memory alloy is a novel functional material, has the advantages of obvious shape memory effect, superelasticity, high damping property, large restorable deformation, high energy consumption, good corrosion resistance, good fatigue resistance and the like, has good tension and torsion effects, and can overcome many problems of the conventional damper by developing and utilizing the shape memory alloy material damper.
Shape memory alloy (SMA for short) is a novel functional material, has shape memory property, super elastic effect and high damping property, and is greatly concerned in the field of vibration control of civil engineering structures. Superelasticity refers to the fact that an alloy, under the action of an external force, generates a strain much greater than the ultimate elastic strain, and the strain is automatically recovered when unloaded. Compared with the traditional device, the SMA device has a series of advantages of good durability and corrosion resistance, long service life, large allowable deformation, restorable deformation and the like.
The damper constructed by utilizing the characteristics of high energy consumption and large deformation self-recovery of the pseudo-elasticity of the shape memory alloy can realize the dual functions of shock absorption and self-recovery of the structure, and the damper is required to yield before the structure in order to protect the structure from being damaged by an earthquake during design. The yield deformation of the shape memory alloy is in direct proportion to the length of the shape memory alloy, and the length of the shape memory alloy in the existing damper is limited, so that the hysteretic energy consumption capability of the damper is limited.
Disclosure of Invention
The invention aims to provide a bidirectional displacement amplification shape memory alloy damper, which adopts a bidirectional displacement amplification device to meet the requirement of bidirectional damping of the damper.
In order to achieve the purpose, the invention adopts the following technical scheme:
a two-way displacement amplification shape memory alloy damper comprises a box body, a two-way displacement amplification device is arranged in the box body, the bidirectional displacement amplifying device comprises a moving rod and at least one bidirectional displacement amplifying assembly arranged on the moving rod, the moving rod is connected with the box body in a sliding way along the left and right direction, the bidirectional displacement amplifying assembly comprises a shape memory alloy wire set, a left amplifying component and a right amplifying component, the shape memory alloy wire group consists of a plurality of shape memory alloy wires with corresponding positions, the shape memory alloy wires are all parallel to the central line of the moving rod, the left amplifying component is positioned at the left side of the shape memory alloy wire set and is connected with the left end of the shape memory alloy wire, the right amplifying component is positioned on the right side of the shape memory alloy wire set and connected with the right end of the shape memory alloy wire.
The left amplification component comprises an upper left amplification structure and a lower left amplification structure, the right amplification component comprises an upper right amplification structure and a lower right amplification structure, the shape memory alloy wire group comprises an upper shape memory alloy wire group and a lower shape memory alloy wire group, the upper left amplification structure corresponds to the left end of the upper shape memory alloy wire group, the lower left amplification structure corresponds to the left end of the lower shape memory alloy wire group, the upper right amplification structure corresponds to the right end of the upper shape memory alloy wire group, and the lower right amplification structure corresponds to the right end of the lower shape memory alloy wire group.
The upper left amplifying structure and the upper right amplifying structure respectively comprise upper swinging plates which are arranged along the vertical direction, the upper swinging plates are hinged with the box body through upper swinging plate hinge pins which are arranged along the front-back direction, the upper swinging plates are divided into upper swinging parts and upper pushing parts by the upper swinging plate hinge pins, the upper swinging parts are positioned above the upper pushing parts, the length of the upper swinging parts along the vertical direction is greater than that of the upper pushing parts along the vertical direction, the upper swinging parts of the upper left amplifying structures correspond to the left end positions of the upper groups of the shape memory alloy wires, the upper swinging parts of the upper right amplifying structures correspond to the right end positions of the upper groups of the shape memory alloy wires, and the upper pushing parts of the upper left amplifying structures and the upper right amplifying structures are connected with the moving rods; when the moving rod moves in the left-right direction, the upper swing plate rotates by taking the upper swing plate hinge pin as a rotating shaft, the moving direction of the upper pushing part is opposite to that of the upper swinging part, when the moving rod moves rightwards, the upper pushing part of the upper left amplifying structure moves rightwards under the driving of the moving rod, the upper swinging part of the upper left amplifying structure moves leftwards and applies a leftward acting force to the left end of the upper group of the shape memory alloy wires, the upper pushing part of the upper right amplifying structure moves rightwards under the driving of the moving rod, and the upper swinging part of the upper right amplifying structure moves leftwards and is far away from the right end of the upper group of the shape memory alloy wires; when the moving rod moves leftwards, the upper pushing part of the upper left amplifying structure moves leftwards under the driving of the moving rod, the upper swinging part of the upper left amplifying structure moves rightwards and is far away from the left end of the upper group of the shape memory alloy wires, the upper pushing part of the upper right amplifying structure moves leftwards under the driving of the moving rod, and the upper swinging part of the upper right amplifying structure moves rightwards and exerts a rightward acting force on the right end of the upper group of the shape memory alloy wires.
The lower left amplifying structure and the lower right amplifying structure respectively comprise lower swing plates arranged along the vertical direction, the lower swing plates are hinged with the box body through lower swing plate hinge pins arranged along the front-back direction, the lower swing plates are divided into lower swing parts and lower push parts by the lower swing plate hinge pins, the lower swing parts are positioned below the lower push parts, the length of the lower swing parts along the vertical direction is greater than that of the lower push parts along the vertical direction, the lower swing parts of the lower left amplifying structure correspond to the left end positions of the lower groups of the shape memory alloy wires, the lower swing parts of the lower right amplifying structure correspond to the right end positions of the lower groups of the shape memory alloy wires, and the lower push parts of the lower left amplifying structure and the lower right amplifying structure are connected with the moving rods; when the moving rod moves in the left-right direction, the lower swing plate rotates by taking the lower swing plate hinge pin as a rotating shaft, the moving direction of the lower pushing part is opposite to that of the lower swinging part, when the moving rod moves rightwards, the lower pushing part of the lower left amplifying structure moves rightwards under the driving of the moving rod, the lower swinging part of the lower left amplifying structure moves leftwards and applies a leftward acting force to the left end of the lower group of the shape memory alloy wires, the lower pushing part of the lower right amplifying structure moves rightwards under the driving of the moving rod, and the lower swinging part of the lower right amplifying structure moves leftwards and is far away from the right end of the lower group of the shape memory alloy wires; when the moving rod moves leftwards, the lower pushing part of the lower left amplifying structure moves leftwards under the driving of the moving rod, the lower swinging part of the lower left amplifying structure moves rightwards and is far away from the left end of the lower group of the shape memory alloy wires, the lower pushing part of the lower right amplifying structure moves leftwards under the driving of the moving rod, and the lower swinging part of the lower right amplifying structure moves rightwards and applies a rightward acting force to the right end of the lower group of the shape memory alloy wires.
The upper pushing part of the upper left amplifying structure and the lower pushing part of the lower left amplifying structure are both connected with the moving rod through a left pushing pin, the upper pushing part of the upper right amplifying structure and the lower pushing part of the lower right amplifying structure are both connected with the moving rod through a right thrust pin, the left thrust pin and the right thrust pin are arranged along the front-back direction, the moving rod is provided with a through hole for the rotation of the upper pushing part and the lower pushing part, the width of the lower end of the upper pushing part along the front-back direction is larger than the width of the upper end of the lower pushing part along the front-back direction, the lower end of the upper pushing part is provided with a longitudinal opening along the left-right direction for inserting the upper end of the lower pushing part, the lower end of the upper pushing part is provided with a first transverse opening along the front-back direction for the left pushing pin to pass through, and a second transverse opening for the left thrust pin to pass through is formed in the lower end of the lower thrust part along the front-back direction.
The upper group of the shape memory alloy wires and the lower group of the shape memory alloy wires both comprise two strip-shaped memory alloy wires, the left ends of the two strip-shaped memory alloy wires of the upper group are fixedly connected through an upper left sliding pin, the right ends of the two strip-shaped memory alloy wires of the upper group are fixedly connected through an upper right sliding pin, the left ends of the two strip-shaped memory alloy wires of the lower group are fixedly connected through a lower left sliding pin, the right ends of the two strip-shaped memory alloy wires of the lower group are fixedly connected through a lower right sliding pin, the upper left sliding pin, the upper right sliding pin, the lower left sliding pin and the lower right sliding pin are arranged along the front-back direction, the upper swing part of the upper left amplifying structure is positioned on the right side of the upper left sliding pin, the lower swing part of the lower left amplifying structure is positioned on the right side of the lower left sliding pin, the upper swing part of the upper right amplifying structure is positioned on the left side of the upper right sliding pin, the lower swing part of the lower right amplifying structure is positioned on the left side of the lower right sliding pin.
Two upper left sliding chutes for supporting the upper left sliding pins, two lower left sliding chutes for supporting the lower left sliding pins, two upper right sliding chutes for supporting the upper right sliding pins and two lower right sliding chutes for supporting the lower right sliding pins are fixedly arranged in the box body, two upper left spouts are located respectively go up left side slip pin both sides just around going up left side slip pin both ends and the last left spout sliding connection who corresponds around going up left side slip pin, two lower left spouts are located respectively down both sides just around the left side slip pin both ends and the lower left spout sliding connection who corresponds around the left side slip pin down, two upper right spouts are located respectively go up right side slip pin both sides just around going up right side slip pin both ends and the last right spout sliding connection who corresponds around going up right side slip pin, two lower right spouts are located respectively down right side slip pin both sides just around down right side slip pin both ends and the lower right spout sliding connection who corresponds down around right side slip pin.
The left end or the right end of the moving rod is provided with a friction assembly, the friction assembly comprises two sub-friction assemblies which are symmetrically arranged about the center line of the moving rod, each sub-friction assembly comprises a friction block which is in contact with the moving rod and a pressing adjusting device which is used for adjusting the pressure between the friction block and the moving rod, and the pressing adjusting device is positioned on the outer side of the friction block; the pressing adjusting device comprises an adjusting screw and a pressing spring, the adjusting screw is located on the outer side of the pressing spring, and the inner end of the pressing spring is abutted to the outer end face of the friction block.
The adjusting screw and the compression spring are both supported through a fixed stop block, a through hole in the vertical direction is formed in the fixed stop block, the outer ends of the adjusting screw, the compression spring and the friction block are sequentially located in the through hole from the outside to the inside, the adjusting screw is in threaded connection with the through hole, and the fixed stop block is fixed on the box body.
The movable rod is connected with the box body in a sliding mode along the left and right direction through a guide structure, the guide structure comprises two sub guide structures arranged at the left end and the right end of the movable rod, each sub guide structure comprises a guide groove arranged on the movable rod and a guide block matched with the guide groove, the guide grooves are arranged along the left and right direction, and the guide blocks are fixedly connected with the box body; the left end of box is equipped with left mounting hole, move the pole right-hand member and be equipped with right mounting hole.
The invention has the following beneficial effects:
the bidirectional displacement amplifying assembly of the bidirectional displacement amplifying device comprises a shape memory alloy wire set, a left amplifying component and a right amplifying component, when a moving rod of the damper moves rightwards, the left amplifying component and the shape memory alloy wire can generate leftward damping, and when the moving rod of the damper moves leftwards, the right amplifying component and the shape memory alloy wire can generate rightward damping; in order to increase the length of the shape memory alloy wire in the damper, the shape memory alloy wire group of the invention consists of a plurality of shape memory alloy wires with corresponding positions, and the length of the shape memory alloy wires is increased under the condition of not increasing the length of the damper;
the left amplification component comprises an upper left amplification structure and a lower left amplification structure, and the upper left amplification structure and the lower left amplification structure are symmetrically arranged, so that the stability of the left amplification component is ensured; the right amplification member comprises an upper right amplification structure and a lower right amplification structure, and the upper right amplification structure and the lower right amplification structure are symmetrically arranged, so that the stability of the right amplification member is ensured;
the length of the upper swing part in the vertical direction is greater than that of the upper pushing part in the vertical direction, the length of the lower swing part in the vertical direction is greater than that of the lower pushing part in the vertical direction, and when the moving rod is displaced slightly, the shape memory alloy wire can be displaced greatly, so that the displacement amplification effect of the bidirectional displacement amplification assembly is facilitated;
the upper swing part and the lower swing part correspond to the two strip-shaped memory alloy wires, so that the energy consumption capacity is high, and the shock absorption is facilitated;
fifthly, in order to improve the damping and energy consumption effects of the damper, a friction assembly is arranged at the left end or the right end of the moving rod and can consume a part of energy;
and sixthly, in order to ensure the motion stability of the moving rod in the damper, the moving rod is connected with the box body in a sliding mode along the left and right directions through a guide structure.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 2;
FIG. 4 is a sectional view taken along line C-C of FIG. 1;
FIG. 5 is a cross-sectional view taken along line D-D of FIG. 1;
FIG. 6 is a sectional view taken along line E-E of FIG. 1;
FIG. 7 is a front view of the amplification assembly of FIG. 1;
FIG. 8 is a front view of the upper swing plate of FIG. 1;
FIG. 9 is a sectional view taken along the direction F-F in FIG. 8;
FIG. 10 is a bottom view of FIG. 8;
FIG. 11 is a front view of the lower swing plate of FIG. 1;
FIG. 12 is a sectional view taken along line G-G of FIG. 11;
fig. 13 is a top view of fig. 11.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1 to 13, a two-way displacement amplification shape memory alloy damper comprises a box body 1, wherein a two-way displacement amplification device is arranged in the box body 1, the two-way displacement amplification device comprises a moving rod 2 and at least one two-way displacement amplification component arranged on the moving rod 2, and two-way displacement amplification components are arranged in the embodiment. The bidirectional displacement amplifying assembly comprises a shape memory alloy wire set, a left amplifying component and a right amplifying component, the shape memory alloy wire set comprises a plurality of shape memory alloy wires corresponding to the positions, and the shape memory alloy wires 3 are all parallel to the central line of the moving rod 2. The left amplifying component is located on the left side of the shape memory alloy wire set and connected with the left end of the shape memory alloy wire 3, and the right amplifying component is located on the right side of the shape memory alloy wire set and connected with the right end of the shape memory alloy wire 3.
The left amplification component comprises an upper left amplification structure and a lower left amplification structure, and the right amplification component comprises an upper right amplification structure and a lower right amplification structure. The shape memory alloy wire group comprises an upper shape memory alloy wire group and a lower shape memory alloy wire group, the upper left amplifying structure corresponds to the left end of the upper shape memory alloy wire group, the lower left amplifying structure corresponds to the left end of the lower shape memory alloy wire group, the upper right amplifying structure corresponds to the right end of the upper shape memory alloy wire group, and the lower right amplifying structure corresponds to the right end of the lower shape memory alloy wire group.
Go up left side and enlarge structure and go up right side and enlarge the structure and all include the last wobble plate 4 of arranging along vertical direction, go up wobble plate 4 and articulate with box 1 through the last wobble plate hinge pin 5 of arranging along the fore-and-aft direction. Go up wobble plate hinge pin 5 will go up wobble plate 4 and divide into upper swinging part 6 and last promotion portion 7, upper swinging part 6 is located the top of last promotion portion 7, upper swinging part 6 is greater than along vertical direction length upper pushing part 7 is along vertical direction length. The upper swing part 6 of the upper left amplifying structure corresponds to the left end position of the upper group of the shape memory alloy wires, the upper swing part 6 of the upper right amplifying structure corresponds to the right end position of the upper group of the shape memory alloy wires, and the upper pushing parts 7 of the upper left amplifying structure and the upper right amplifying structure are connected with the moving rod 2. When the moving rod 2 moves in the left-right direction, the upper swing plate 4 rotates by taking the upper swing plate hinge pin 5 as a rotating shaft, and the moving direction of the upper pushing part 7 is opposite to that of the upper swing part 6. When the moving rod 2 moves rightwards, the upper pushing part 7 of the upper left amplifying structure moves rightwards under the driving of the moving rod 2, the upper swinging part 6 of the upper left amplifying structure moves leftwards and applies a leftward acting force to the left end of the upper group of the shape memory alloy wires, the upper pushing part 7 of the upper right amplifying structure moves rightwards under the driving of the moving rod 2, and the upper swinging part 6 of the upper right amplifying structure moves leftwards and is far away from the right end of the upper group of the shape memory alloy wires. When the moving rod 2 moves leftwards, the upper pushing part 7 of the upper left amplifying structure moves leftwards under the driving of the moving rod 2, the upper swinging part 6 of the upper left amplifying structure moves rightwards and is far away from the left end of the upper group of the shape memory alloy wires, the upper pushing part 7 of the upper right amplifying structure moves leftwards under the driving of the moving rod 2, and the upper swinging part 6 of the upper right amplifying structure moves rightwards and applies a rightward acting force to the right end of the upper group of the shape memory alloy wires.
The lower left amplification structure and the lower right amplification structure both comprise lower swing plates 8 arranged along the vertical direction, and the lower swing plates 8 are hinged with the box body 1 through lower swing plate hinge pins 9 arranged along the front-back direction. The lower swing plate 8 is divided into a lower swing portion 10 and a lower pushing portion 11 by the lower swing plate hinge pin 9, the lower swing portion 10 is located below the lower pushing portion 11, and the length of the lower swing portion 10 in the vertical direction is larger than that of the lower pushing portion 11 in the vertical direction. The lower swing part 10 of the lower left amplifying structure corresponds to the left end position of the lower group of the shape memory alloy wires, the lower swing part 10 of the lower right amplifying structure corresponds to the right end position of the lower group of the shape memory alloy wires, and the lower push parts 11 of the lower left amplifying structure and the lower right amplifying structure are connected with the moving rod 2. When the moving rod 2 moves in the left-right direction, the lower swing plate 8 rotates by taking the lower swing plate hinge pin 9 as a rotating shaft, and the moving direction of the lower pushing part 11 is opposite to that of the lower swing part 10. When the moving rod 2 moves rightwards, the lower pushing part 11 of the lower left amplifying structure moves rightwards under the driving of the moving rod 2, the lower swinging part 10 of the lower left amplifying structure moves leftwards and applies a leftward acting force to the left end of the lower group of shape memory alloy wires, the lower pushing part 11 of the lower right amplifying structure moves rightwards under the driving of the moving rod 2, and the lower swinging part 10 of the lower right amplifying structure moves leftwards and is far away from the right end of the lower group of shape memory alloy wires. When the moving rod 2 moves leftwards, the lower pushing part 11 of the lower left amplifying structure moves leftwards under the driving of the moving rod 2, the lower swinging part 10 of the lower left amplifying structure moves rightwards and is far away from the left end of the lower group of the shape memory alloy wires, the lower pushing part 11 of the lower right amplifying structure moves leftwards under the driving of the moving rod 2, and the lower swinging part 10 of the lower right amplifying structure moves rightwards and applies a rightward acting force to the right end of the lower group of the shape memory alloy wires.
Go up the last promotion portion 7 of left side enlarged structure with the lower promotion portion 11 of lower left side enlarged structure all through left thrust pin 12 with move the pole 2 and connect, go up the last promotion portion 7 of right side enlarged structure with the lower promotion portion 11 of lower right side enlarged structure all through right thrust pin 13 with move the pole 2 and connect, left side thrust pin 12 and right thrust pin 13 all arrange along the fore-and-aft direction. Move and be equipped with the confession on the pole 2 go up promotion portion 7 with promotion portion 11 pivoted through-hole 14 down, the width of going up promotion portion 7 lower extreme along the fore-and-aft direction is greater than promotion portion 11 upper end is followed the width of fore-and-aft direction down, the confession has been seted up along left right direction to upward promotion portion 7 lower extreme under the 11 end male indulge opening 15 of promoting down, upward the 7 lower extreme of promotion portion has been seted up along the fore-and-aft direction and has been supplied first horizontal opening 16 that left side thrust pin 12 passed, the confession has been seted up along the fore-and-aft direction to lower promotion portion 11 lower extreme under the horizontal opening 17 of second that left side thrust pin.
The shape memory alloy wire upper group and the shape memory alloy wire lower group respectively comprise two strip-shaped memory alloy wires 3, the left ends of the two strip-shaped memory alloy wires 3 of the upper group are fixedly connected through an upper left sliding pin 18, the right ends of the two strip-shaped memory alloy wires 3 of the upper group are fixedly connected through an upper right sliding pin 19, the left ends of the two strip-shaped memory alloy wires 3 of the lower group are fixedly connected through a lower left sliding pin 20, the right ends of the two strip-shaped memory alloy wires 3 of the lower group are fixedly connected through a lower right sliding pin 21, and the upper left sliding pin 18, the upper right sliding pin 19, the lower left sliding pin 20 and the lower right sliding pin 21 are arranged along the front-back direction. Go up the upper swing portion 6 of left side enlarged structure and be located go up the right side of left side slip pin 18, the lower swing portion 10 of lower left side enlarged structure is located the right side of lower left side slip pin 20, the upper swing portion 6 of going up the right side enlarged structure is located the left side of going up right side slip pin 19, the lower swing portion 10 of lower right side enlarged structure is located the left side of lower right side slip pin 21.
The box body 1 is internally provided with two upper left chutes 22 for supporting the upper left sliding pin 18, two lower left chutes 23 for supporting the lower left sliding pin 20, two upper right chutes 24 for supporting the upper right sliding pin 19 and two lower right chutes 25 for supporting the lower right sliding pin 21, wherein the two upper left chutes 22 are respectively positioned at the front and rear sides of the upper left sliding pin 18 and at the front and rear ends of the upper left sliding pin 18 and the corresponding upper left chute 22 in a sliding manner, the two lower left chutes 23 are respectively positioned at the front and rear sides of the lower left sliding pin 20 and at the front and rear ends of the lower left sliding pin 20 and the corresponding lower left chute 23 in a sliding manner, the two upper right chutes 24 are respectively positioned at the front and rear sides of the upper right sliding pin 19 and at the front and rear ends of the upper right sliding pin 19 and the corresponding upper right chute 24 in a sliding manner, two lower right spout 25 are located respectively lower right slip pin 21 both sides around just both ends and the lower right spout 25 sliding connection that corresponds around lower right slip pin 21.
Move the pole 2 left end or right-hand member and be equipped with friction subassembly, friction subassembly includes two sub-friction subassemblies 26 about moving pole 2 central line symmetrical arrangement, two sub-friction subassembly 26 all include with move the friction block 27 of pole 2 contact and be used for adjusting the jam adjusting device who moves pressure between friction block 27 and the pole 2, it is located to compress tightly adjusting device the outside of friction block 27. When the moving rod 2 moves rightwards, the friction resistance to the moving rod 2 leftwards is generated between the friction block 27 and the moving rod 2, and when the moving rod 2 moves leftwards, the friction resistance to the moving rod 2 rightwards is generated between the friction block 27 and the moving rod 2.
The pressing adjusting device comprises an adjusting screw 28 and a pressing spring 29, the adjusting screw 28 is positioned on the outer side of the pressing spring 29, and the inner end of the pressing spring 29 is abutted with the outer end face of the friction block 27.
Adjusting screw 28 and pressure spring 29 all support through fixed dog 30, be equipped with along vertical direction's through-hole 31 on the fixed dog 30, adjusting screw 28, pressure spring 29 and friction block 27 outer end are located in proper order from outside to inside in through-hole 31, adjusting screw 28 with through-hole threaded connection, fixed dog 30 is fixed on box 1. The cooperation of the adjusting screw 28 and the pressing spring 29 facilitates the adjustment of the pressure between the friction block 27 and the moving rod 2, which can be adjusted according to the specific use condition.
The moving rod 2 is connected with the box body 1 in a sliding mode along the left-right direction through a guide structure, the guide structure comprises two sub-guide structures arranged at the left end and the right end of the moving rod 2, each sub-guide structure comprises a guide groove 31 arranged on the moving rod 2 and a guide block 32 matched with the guide groove 31, the guide grooves 31 are arranged along the left-right direction, and the guide blocks 32 are fixedly connected with the box body 1; the left end of box 1 is equipped with left mounting hole 33, move the pole 2 right-hand member and be equipped with right mounting hole 34.
In this embodiment, in order to facilitate the installation and the disassembly, the box body 1 and the moving rod 2 are both assembled. The upper side plate 35, the lower side plate 36, the left side plate 37 and the right side plate 38 of the box body 1 are of an integral structure, and the front cover plate 39 and the rear cover plate 40 are fixedly connected with the upper side plate 35, the lower side plate 36, the left side plate 37 and the right side plate 38 through screws. The moving rod 2 is composed of a left end 41, a right end 42, a front fixing plate 43, a rear fixing plate 44 and a cushion block 45, the front fixing plate 43 and the rear fixing plate 44 are arranged in parallel in the left-right direction, a gap for the upper pushing portion 7 and the lower pushing portion 11 to rotate is formed between the front fixing plate 43 and the rear fixing plate 44, the cushion block 45 is fixed to the middle of the gap between the front fixing plate 43 and the rear fixing plate 44, the left end 41 is fixed to the left end of the front fixing plate 43 and the rear fixing plate 44, the right end 42 is fixed to the right end of the front fixing plate 43 and the rear fixing plate 44, and the two guide grooves 31 are respectively arranged on the.
The specific working process is as follows:
the damper of the present invention is installed in the floor of the building structure through the left and right installation holes 33 and 34. When the moving rod 2 moves rightwards, the upper pushing part 7 of the upper left amplifying structure moves rightwards under the driving of the moving rod 2, the upper swinging part 6 of the upper left amplifying structure moves leftwards and applies a leftward acting force to the left end of the upper group of the shape memory alloy wires, the upper pushing part 7 of the upper right amplifying structure moves rightwards under the driving of the moving rod 2, and the upper swinging part 6 of the upper right amplifying structure moves leftwards and is far away from the right end of the upper group of the shape memory alloy wires; the lower pushing part 11 of the lower left amplifying structure moves rightwards under the driving of the moving rod 2, the lower swinging part 10 of the lower left amplifying structure moves leftwards and applies a leftward acting force to the left end of the lower group of the shape memory alloy wires, the lower pushing part 11 of the lower right amplifying structure moves rightwards under the driving of the moving rod 2, and the lower swinging part 10 of the lower right amplifying structure moves leftwards and is far away from the right end of the lower group of the shape memory alloy wires; the friction block 27 and the moving rod 2 generate a friction resistance to the left of the moving rod 2.
When the moving rod 2 moves leftwards, the upper pushing part 7 of the upper left amplifying structure moves leftwards under the driving of the moving rod 2, the upper swinging part 6 of the upper left amplifying structure moves rightwards and is far away from the left end of the upper group of the shape memory alloy wires, the upper pushing part 7 of the upper right amplifying structure moves leftwards under the driving of the moving rod 2, and the upper swinging part 6 of the upper right amplifying structure moves rightwards and applies a rightward acting force to the right end of the upper group of the shape memory alloy wires; the lower pushing part 11 of the lower left amplifying structure is driven by the moving rod 2 to move leftwards, the lower swinging part 10 of the lower left amplifying structure moves rightwards and is far away from the left end of the lower group of the shape memory alloy wires, the lower pushing part 11 of the lower right amplifying structure moves leftwards under the driving of the moving rod 2, and the lower swinging part 10 of the lower right amplifying structure moves rightwards and applies a rightward acting force to the right end of the lower group of the shape memory alloy wires; the friction block 27 and the moving rod 2 generate a frictional resistance to the right of the moving rod 2.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a two-way displacement enlargies shape memory alloy attenuator, includes the box, its characterized in that: the box body is internally provided with a bidirectional displacement amplifying device, the bidirectional displacement amplifying device comprises a moving rod and at least one bidirectional displacement amplifying assembly arranged on the moving rod, the moving rod is connected with the box body in a sliding mode along the left-right direction, the bidirectional displacement amplifying assembly comprises a shape memory alloy wire set, a left amplifying component and a right amplifying component, the shape memory alloy wire set comprises a plurality of shape memory alloy wires corresponding to the positions, the shape memory alloy wires are parallel to the center line of the moving rod, the left amplifying component is located on the left side of the shape memory alloy wire set and connected with the left end of the shape memory alloy wires, and the right amplifying component is located on the right side of the shape memory alloy wire set and connected with the right end of the shape memory alloy wires;
the left amplification component comprises an upper left amplification structure and a lower left amplification structure, the right amplification component comprises an upper right amplification structure and a lower right amplification structure, the shape memory alloy wire group comprises an upper shape memory alloy wire group and a lower shape memory alloy wire group, the upper left amplification structure corresponds to the left end of the upper shape memory alloy wire group, the lower left amplification structure corresponds to the left end of the lower shape memory alloy wire group, the upper right amplification structure corresponds to the right end of the upper shape memory alloy wire group, and the lower right amplification structure corresponds to the right end of the lower shape memory alloy wire group;
the upper left amplifying structure and the upper right amplifying structure respectively comprise upper swinging plates which are arranged along the vertical direction, the upper swinging plates are hinged with the box body through upper swinging plate hinge pins which are arranged along the front-back direction, the upper swinging plates are divided into upper swinging parts and upper pushing parts by the upper swinging plate hinge pins, the upper swinging parts are positioned above the upper pushing parts, the length of the upper swinging parts along the vertical direction is greater than that of the upper pushing parts along the vertical direction, the upper swinging parts of the upper left amplifying structures correspond to the left end positions of the upper groups of the shape memory alloy wires, the upper swinging parts of the upper right amplifying structures correspond to the right end positions of the upper groups of the shape memory alloy wires, and the upper pushing parts of the upper left amplifying structures and the upper right amplifying structures are connected with the moving rods; when the moving rod moves in the left-right direction, the upper swing plate rotates by taking the upper swing plate hinge pin as a rotating shaft, the moving direction of the upper pushing part is opposite to that of the upper swinging part, when the moving rod moves rightwards, the upper pushing part of the upper left amplifying structure moves rightwards under the driving of the moving rod, the upper swinging part of the upper left amplifying structure moves leftwards and applies a leftward acting force to the left end of the upper group of the shape memory alloy wires, the upper pushing part of the upper right amplifying structure moves rightwards under the driving of the moving rod, and the upper swinging part of the upper right amplifying structure moves leftwards and is far away from the right end of the upper group of the shape memory alloy wires; when the moving rod moves leftwards, the upper pushing part of the upper left amplifying structure moves leftwards under the driving of the moving rod, the upper swinging part of the upper left amplifying structure moves rightwards and is far away from the left end of the upper group of the shape memory alloy wires, the upper pushing part of the upper right amplifying structure moves leftwards under the driving of the moving rod, and the upper swinging part of the upper right amplifying structure moves rightwards and applies a rightward acting force to the right end of the upper group of the shape memory alloy wires;
the lower left amplifying structure and the lower right amplifying structure respectively comprise lower swing plates arranged along the vertical direction, the lower swing plates are hinged with the box body through lower swing plate hinge pins arranged along the front-back direction, the lower swing plates are divided into lower swing parts and lower push parts by the lower swing plate hinge pins, the lower swing parts are positioned below the lower push parts, the length of the lower swing parts along the vertical direction is greater than that of the lower push parts along the vertical direction, the lower swing parts of the lower left amplifying structure correspond to the left end positions of the lower groups of the shape memory alloy wires, the lower swing parts of the lower right amplifying structure correspond to the right end positions of the lower groups of the shape memory alloy wires, and the lower push parts of the lower left amplifying structure and the lower right amplifying structure are connected with the moving rods; when the moving rod moves in the left-right direction, the lower swing plate rotates by taking the lower swing plate hinge pin as a rotating shaft, the moving direction of the lower pushing part is opposite to that of the lower swinging part, when the moving rod moves rightwards, the lower pushing part of the lower left amplifying structure moves rightwards under the driving of the moving rod, the lower swinging part of the lower left amplifying structure moves leftwards and applies a leftward acting force to the left end of the lower group of the shape memory alloy wires, the lower pushing part of the lower right amplifying structure moves rightwards under the driving of the moving rod, and the lower swinging part of the lower right amplifying structure moves leftwards and is far away from the right end of the lower group of the shape memory alloy wires; when the moving rod moves leftwards, the lower pushing part of the lower left amplifying structure moves leftwards under the driving of the moving rod, the lower swinging part of the lower left amplifying structure moves rightwards and is far away from the left end of the lower group of the shape memory alloy wires, the lower pushing part of the lower right amplifying structure moves leftwards under the driving of the moving rod, and the lower swinging part of the lower right amplifying structure moves rightwards and applies a rightward acting force to the right end of the lower group of the shape memory alloy wires.
2. The two-way displacement amplifying shape memory alloy damper of claim 1, wherein: the upper pushing part of the upper left amplifying structure and the lower pushing part of the lower left amplifying structure are both connected with the moving rod through a left pushing pin, the upper pushing part of the upper right amplifying structure and the lower pushing part of the lower right amplifying structure are both connected with the moving rod through a right thrust pin, the left thrust pin and the right thrust pin are arranged along the front-back direction, the moving rod is provided with a through hole for the rotation of the upper pushing part and the lower pushing part, the width of the lower end of the upper pushing part along the front-back direction is larger than the width of the upper end of the lower pushing part along the front-back direction, the lower end of the upper pushing part is provided with a longitudinal opening along the left-right direction for inserting the upper end of the lower pushing part, the lower end of the upper pushing part is provided with a first transverse opening along the front-back direction for the left pushing pin to pass through, and a second transverse opening for the left thrust pin to pass through is formed in the lower end of the lower thrust part along the front-back direction.
3. The two-way displacement amplifying shape memory alloy damper of claim 2, wherein: the upper group of the shape memory alloy wires and the lower group of the shape memory alloy wires both comprise two strip-shaped memory alloy wires, the left ends of the two strip-shaped memory alloy wires of the upper group are fixedly connected through an upper left sliding pin, the right ends of the two strip-shaped memory alloy wires of the upper group are fixedly connected through an upper right sliding pin, the left ends of the two strip-shaped memory alloy wires of the lower group are fixedly connected through a lower left sliding pin, the right ends of the two strip-shaped memory alloy wires of the lower group are fixedly connected through a lower right sliding pin, the upper left sliding pin, the upper right sliding pin, the lower left sliding pin and the lower right sliding pin are arranged along the front-back direction, the upper swing part of the upper left amplifying structure is positioned on the right side of the upper left sliding pin, the lower swing part of the lower left amplifying structure is positioned on the right side of the lower left sliding pin, the upper swing part of the upper right amplifying structure is positioned on the left side of the upper right sliding pin, the lower swing part of the lower right amplifying structure is positioned on the left side of the lower right sliding pin.
4. The two-way displacement amplifying shape memory alloy damper of claim 3, wherein: two upper left sliding chutes for supporting the upper left sliding pins, two lower left sliding chutes for supporting the lower left sliding pins, two upper right sliding chutes for supporting the upper right sliding pins and two lower right sliding chutes for supporting the lower right sliding pins are fixedly arranged in the box body, two upper left spouts are located respectively go up left side slip pin both sides just around going up left side slip pin both ends and the last left spout sliding connection who corresponds around going up left side slip pin, two lower left spouts are located respectively down both sides just around the left side slip pin both ends and the lower left spout sliding connection who corresponds around the left side slip pin down, two upper right spouts are located respectively go up right side slip pin both sides just around going up right side slip pin both ends and the last right spout sliding connection who corresponds around going up right side slip pin, two lower right spouts are located respectively down right side slip pin both sides just around down right side slip pin both ends and the lower right spout sliding connection who corresponds down around right side slip pin.
5. The two-way displacement amplifying shape memory alloy damper of claim 1, wherein: the left end or the right end of the moving rod is provided with a friction assembly, the friction assembly comprises two sub-friction assemblies which are symmetrically arranged about the center line of the moving rod, each sub-friction assembly comprises a friction block which is in contact with the moving rod and a pressing adjusting device which is used for adjusting the pressure between the friction block and the moving rod, and the pressing adjusting device is positioned on the outer side of the friction block; the pressing adjusting device comprises an adjusting screw and a pressing spring, the adjusting screw is located on the outer side of the pressing spring, and the inner end of the pressing spring is abutted to the outer end face of the friction block.
6. The two-way displacement amplifying shape memory alloy damper of claim 5, wherein: the adjusting screw and the compression spring are both supported through a fixed stop block, a through hole in the vertical direction is formed in the fixed stop block, the outer ends of the adjusting screw, the compression spring and the friction block are sequentially located in the through hole from the outside to the inside, the adjusting screw is in threaded connection with the through hole, and the fixed stop block is fixed on the box body.
7. The two-way displacement amplifying shape memory alloy damper of claim 1, wherein: the movable rod is connected with the box body in a sliding mode along the left and right direction through a guide structure, the guide structure comprises two sub guide structures arranged at the left end and the right end of the movable rod, each sub guide structure comprises a guide groove arranged on the movable rod and a guide block matched with the guide groove, the guide grooves are arranged along the left and right direction, and the guide blocks are fixedly connected with the box body; the left end of box is equipped with left mounting hole, move the pole right-hand member and be equipped with right mounting hole.
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| CN2615225Y (en) * | 2003-04-25 | 2004-05-12 | 北京工业大学 | Shape memory alloy damper for construction structure |
| CN1303295C (en) * | 2005-01-20 | 2007-03-07 | 东南大学 | Super elastic shape memory alloy damper for rope, cable and slender rod |
| CN101070715B (en) * | 2007-04-06 | 2010-09-08 | 大连理工大学 | Energy-consumption resetting shape memory alloy damper |
| CN201148675Y (en) * | 2008-01-03 | 2008-11-12 | 大连理工大学 | Composite type shape memory alloy friction damper |
| JP5668389B2 (en) * | 2010-09-21 | 2015-02-12 | 株式会社大林組 | Damping structure of joint |
| JP5927333B1 (en) * | 2015-10-20 | 2016-06-01 | 新日鉄住金エンジニアリング株式会社 | Damping device and structure |
| CN106760861A (en) * | 2017-03-22 | 2017-05-31 | 河南理工大学 | A kind of MULTIPLE COMPOSITE energy-consumption damper |
| CN107035203A (en) * | 2017-06-07 | 2017-08-11 | 沈阳建筑大学 | A kind of SMA energy consumers prestressing without bondn system |
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