CN105971357B - Piston type SMA- Piezoelectric anisotropy friction-changing dampers - Google Patents
Piston type SMA- Piezoelectric anisotropy friction-changing dampers Download PDFInfo
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- CN105971357B CN105971357B CN201610390616.3A CN201610390616A CN105971357B CN 105971357 B CN105971357 B CN 105971357B CN 201610390616 A CN201610390616 A CN 201610390616A CN 105971357 B CN105971357 B CN 105971357B
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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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- Structural Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Piston type SMA Piezoelectric anisotropy friction-changing dampers, mainly include outer cylinder, upper cylinder cover, outer end piston, curved friction steel plate, connecting rod, sliding axle, SMA cables, secondary spring A, precompressed bolt, adjusting nut, piezoelectric ceramic actuator, force snesor, flat head screw, connect bolt, flush end trip bolt, SMA cable fixing bolts, lower cylinder cap, latch, annular fixing buckle, intermediate piston, perforate, spring fastening A, circular groove, friction material, cylinder guide, guide rod slides storehouse, screw thread, adjusting bolt, block falcon, block, sliding slot, slide warehouse lid, conducting wire, plant-grid connection port, spring fastening B, spring fastening C, spring fastening D and secondary spring B.The present invention is had the advantages of simple structure and easy realization, and with regulating and controlling voltage deformation, the rapid reliable, driving force of movement response greatly with good Self-resetting effect.Precompression size can accurately be adjusted.It can meet the energy-eliminating shock-absorbing demand under the earthquake of varying strength.
Description
Technical field
The invention belongs to Structural Engineering shockproof control field, is related to a kind of piston type SMA- Piezoelectric anisotropies and becomes frictional damping
Device, particularly plays inhibitory action in all kinds of geological process lower structure dynamic respons to engineering structure, reaches the control of energy-dissipating and shock-absorbing
Effect processed.
Background technology
Marmem (SMA) is used as a kind of new material, has the advantages that durability, corrosion resistance and Self-resetting,
But the equivalent viscous damping of SMA e insufficient to make it as unique damping unit.
When being based only upon the earthquake control device of marmem and bearing to be subject to dynamic loads, its energy dissipation provided will
It is smaller.Frcition damper simple structure, easy for installation, energy consumption property is good, and performance is not affected by temperature, and is building structure
In a kind of common energy-consumption shock-absorption device.But traditional frcition damper structure is single, no self-resetting capability, itself can only be relied on
Rigidity reset, there is provided frictional force be steady state value,
Energy consumption effect is bad, and when a sliding/friction power for damper is larger, there is also deadlock phenomenon, it is impossible to play
The function of energy-dissipating and shock-absorbing.Piezoceramic material since its unique piezoelectric effect is widely used to field of vibration control,
The exploitation and development of friction-changing damper are carried out using piezoelectric intelligent material, it has also become a hot spot of research.
The content of the invention
The object of the present invention is to provide one kind to have strong energy dissipation capacity, good damping effect, clear and definite, globality simple in structure
Good, Self-resetting and piston type SMA- Piezoelectric anisotropy friction-changing dampers the features such as be easily installed and replace.
The invention mainly comprises have outer cylinder, upper cylinder cover, outer end piston, curved friction steel plate, connecting rod, sliding axle, SMA
It is silk cable, secondary spring A, precompressed bolt, adjusting nut, piezoelectric ceramic actuator, force snesor, flat head screw, connection bolt, flat
Hold trip bolt, SMA cable fixing bolts, lower cylinder cap, latch, annular fixing buckle, intermediate piston, through hole, spring fastening A, circle
Groove, friction material, cylinder guide, guide rod slide storehouse, screw thread, adjusting bolt, card falcon, block, sliding slot, slide warehouse lid, lead
Line, plant-grid connection port, spring fastening B, spring fastening C, spring fastening D and secondary spring B.
Wherein, outer cylinder is the hollow cylinder of upper and lower opening, in the top and bottom of outer cylinder, passes through flat head screw respectively
It is connected with upper cylinder cover, lower cylinder cap, outer cylinder is divided into identical two parts, is vertically connected with closely by connection bolt.Upper cylinder cover is circle
Shape tablet, circumferentially periphery is equipped with equally distributed screwing through hole on upper cylinder cover, and flat head screw is plugged in through hole.Upper
Cylinder cap is equipped with a circumferential thread hole, and grafting adjusting bolt in threaded hole, adjusting bolt is intermeshed with adjusting nut.In upper cylinder half
Through hole is equipped with the middle part of lid and lower cylinder cap.Sliding axle extends to the inside of outer cylinder by the through hole in the middle part of upper cylinder cover.Connection
Bar extends to the inside of outer cylinder by the through hole in the middle part of lower cylinder cap, and connecting rod is fixedly connected by latch with lower cylinder cap.Under
The inner side of cylinder cap is equipped with spring fastening A.3 groups of the distance between screw thread, adjacent thread phases are equipped with the outer wall of sliding axle lower part
Together.The outside of the screw thread of group in upper, middle and lower, engages upper outer end piston, intermediate piston and lower outer end piston, in upper outer end respectively
On piston, intermediate piston and lower outer end piston, four radial hole are respectively equipped with.In upper outer end piston, intermediate piston and lower outer
The top and bottom of piston are held, are respectively equipped with annular fixing buckle, annular fixing buckle is ring plate, and annular fixation be located in slip
On axis.Spring fastening B is arranged below in the annular fixing buckle of lower outer end piston lower portion, is set between spring fastening B and spring fastening A
There is secondary spring A.It is fixedly connected with spring fastening C on the inside of upper cylinder cover, the upper end of the annular fixing buckle of upper outer end upper piston area,
Equipped with spring fastening D, secondary spring B is equipped between spring fastening C and spring fastening D, secondary spring B is socketed on sliding axle.
In the four SMA cables that are internally provided with of outer cylinder, four SMA cables point are arranged symmetrically up and down, are each passed through upper cylinder cover
Threaded hole, the radial hole of upper outer end piston, the radial hole of intermediate piston, the radial hole of lower outer end piston, lower cylinder cap
In threaded hole, it is fixedly connected by the adjusting bolt of upper cylinder cover and lower cylinder cap, adjusting nut.Centre is inserted in SMA cable fixing bolts
In the radial hole of piston, and SMA cables are fixed with flush end trip bolt and intermediate piston.It is equipped with the inner wall of outer cylinder upper
Lower two identical blocks, are respectively equipped with sliding slot, in upper stopper and lower block in the upper surface of the lower surface of upper stopper and lower block
The card falcon of the curved friction steel plate both sides of difference grafting in the sliding slot of block.Circular groove is equipped with behind curved friction steel plate, in advance
Pressure bolt passes through outer cylinder, extends in circular groove, force snesor is placed in the bottom of precompressed bolt.Intermediate piston, on it is outer
Friction material is equipped between end piston, lower outer end piston and curved friction steel plate, friction material is coated in the interior of curved friction steel plate
Side.Cylinder guide is equipped with curve friction steel plate, the guide rod that cylinder guide is plugged on outer cylinder top is slided in storehouse.
The inside that guide rod slides storehouse is equipped with piezoelectric ceramic actuator, and the top that guide rod slides storehouse will slide warehouse lid with leading by flat head screw
Bar slides storehouse and is connected, and piezoelectric ceramic actuator is packaged.Pass through conducting wire phase between piezoelectric ceramic actuator and force snesor
Even, conducting wire is connected by plant-grid connection port with external power.Plant-grid connection port is placed on outer cylinder.
In the use of the present invention, by adjusting bolt SMA cables are applied with the pretension of equal extent.Outer end piston and upper
Secondary spring is equipped between cylinder cap, lower cylinder cap, the positioning of intermediate piston and sliding axle when being installed for damper, and aid in SMA
Cable realizes Self-resetting.Curved friction steel plate back is equipped with circular groove, and pretension bolt gos deep into circular groove through outer cylinder, adjustable
Save initial precompression of the curved friction plate to intermediate piston and outer end piston.Sliding axle is connected with intermediate piston, outer end piston, band
Dynamic whole reciprocating motion of the pistons, friction energy-dissipating is carried out with curved friction plate, while intermediate piston drives SMA cables to stretch, and utilizes
Its super-elasticity consumes energy, and realizes the runback bit function of damper.During geological process, conducting wire connection piezoelectric ceramic actuator, passes through
The varying voltage signal control piezoelectric ceramic actuator of power supply outflow stretches output, and piezoelectric ceramic actuator is led along curved friction plate
Rod axis direction is moved, and extrudes curved friction plate guide rod, and then curved friction plate is moved along the vertical direction, is then formed curved
Friction plate is to the pressure of intermediate piston and outer end piston, the different friction of by different pressure to realize that the two is mutually moved when
Power, to meet the power dissipation requirements under different type earthquake.
The present invention has the following advantages that compared with prior art：Piston type SMA- Piezoelectric anisotropies according to the present invention, which become, to rub
It is clearly simple to wipe damper structure, it is easy to accomplish, and with regulating and controlling voltage deformation, movement response is rapid reliable, driving force is big
Feature.Piston is connected with secondary spring and SMA cables in the present invention, has good Self-resetting effect.Precompressed spiral shell in the present invention
Force snesor is set between bolt and curved friction steel plate, can accurately adjust precompression size.Pass through piezoelectric ceramic actuator tune
The normal pressure between piston and curved friction plate is saved, so as to reach the effect of regulating friction force, can meet the earthquake of varying strength
Under energy-eliminating shock-absorbing demand.
Brief description of the drawings
Fig. 1 is the solid appearance schematic top plan view of the present invention；
Fig. 2 is the upper cylinder cover appearance diagram of the present invention；
Fig. 3 is the lower cylinder cap appearance diagram of the present invention；
Fig. 4 is the A-A cross-sectional views of Fig. 1；
Fig. 5 is the B-B cross-sectional views of Fig. 4；
Fig. 6 is the secondary spring schematic diagram of the present invention；
Fig. 7 is the sliding axle schematic diagram of the present invention；
Fig. 8 is the side schematic view of the curved friction plate of the present invention；
Fig. 9 is the top view of the curved friction plate of the present invention；
Figure 10 is the positive schematic diagram of the curved friction plate of the present invention；
Figure 11 is the outer cylinder schematic internal view of the present invention；
Figure 12 is the outer cylinder C-C cross-sectional views of the present invention；
Figure 13 is the outer cylinder D-D cross-sectional views of the present invention.
In figure：1st, outer cylinder；2nd, upper cylinder cover；3rd, outer end piston；4th, curved friction steel plate；5th, connecting rod；6th, sliding axle；7、
SMA cables；8th, secondary spring A；9th, precompressed bolt；10th, adjusting nut；11st, piezoelectric ceramic actuator；12nd, force snesor；13、
Flat head screw；14th, bolt is connected；15th, flush end trip bolt；16th, SMA cable fixing bolts；17th, lower cylinder cap；18th, latch；19th, ring
Shape fixing buckle；20th, intermediate piston；21st, through hole；22nd, spring fastening A；23rd, circular groove；24th, friction material；25th, cylinder is led
Bar；26th, guide rod slides storehouse；27th, screw thread；28th, adjusting bolt；29th, falcon is blocked；30th, block；31st, sliding slot；32nd, warehouse lid is slided；33、
Conducting wire；34th, plant-grid connection port；35th, spring fastening B；36th, spring fastening C；37th, spring fastening D；38th, secondary spring B.
Embodiment
In the simplified schematic diagram of the invention shown in Fig. 1 to Figure 13, outer cylinder 1 be upper and lower opening hollow cylinder, outer shell
Cylinder is divided into identical two parts, is vertically connected with closely by connection bolt 14, in the top and bottom of outer cylinder, passes through tack respectively
Screw 13 is connected with upper cylinder cover 2, lower cylinder cap 17, and upper cylinder cover is identical with the structure of lower cylinder cap.Upper cylinder cover is circular tablet, in upper cylinder half
Cover circumferentially periphery and be equipped with equally distributed screwing through hole, flat head screw is plugged in through hole.In upper cylinder cover and lower cylinder cap
It is equipped with a circumferential thread hole, grafting adjusting bolt 28 in threaded hole, adjusting bolt is intermeshed with adjusting nut 10.In upper cylinder half
Through hole is equipped with the middle part of lid and lower cylinder cap.Sliding axle 6 extends to the inside of outer cylinder by the through hole in the middle part of upper cylinder cover.Connection
Bar 5 extends to the inside of outer cylinder by the through hole in the middle part of lower cylinder cap, and connecting rod is fixedly connected by latch 18 with lower cylinder cap.
The inner side of lower cylinder cap is equipped with spring fastening A22.3 groups of screw threads 27 are equipped with the outer wall of sliding axle lower part, between adjacent thread
Apart from identical.The outside of the screw thread of group in upper, middle and lower, engages upper outer end piston, intermediate piston 20 and lower outer end piston respectively,
On intermediate piston and outer end piston, four radial hole 21 are respectively equipped with.In upper outer end piston, intermediate piston and outer end piston
Top and bottom, be respectively equipped with annular fixing buckle 19, annular fixing buckle is ring plate, annular fixation be located in sliding axle
On.Spring fastening B35 is arranged below in the annular fixing buckle of lower outer end piston lower portion, is set between spring fastening B and spring fastening A
There is secondary spring A8.Be fixedly connected with spring fastening C36 on the inside of upper cylinder cover, the annular fixing buckle of upper outer end upper piston area it is upper
End, equipped with spring fastening D37, is equipped with secondary spring B38, secondary spring B is socketed in cunning between spring fastening C and spring fastening D
On moving axis.In the four SMA cables 7 that are internally provided with of outer cylinder, four SMA cables point are arranged symmetrically, are each passed through up and down
The threaded hole of upper cylinder cover, the radial hole of upper outer end piston, the radial hole of intermediate piston, lower outer end piston radial hole,
In the threaded hole of lower cylinder cap, it is fixedly connected by the adjusting bolt of upper cylinder cover and lower cylinder cap, adjusting nut.The fixing bolt of SMA cables
It is inserted in 16 in the radial hole of intermediate piston, and SMA cables is fixed with flush end trip bolt 15 and intermediate piston.In outer cylinder
Inner wall be equipped with upper stopper and lower block 30, be respectively equipped with sliding slot 31 in the upper surface of the lower surface of upper stopper and lower block,
The card falcon 29 of curved 4 both sides of friction steel plate of grafting is distinguished in the sliding slot of upper stopper and lower block.After curved friction steel plate
Face is equipped with circular groove 23, and precompressed bolt 9 passes through outer cylinder, extends in circular groove, and force snesor 12 is placed in precompressed bolt
Bottom.Intermediate piston, on friction material 24 is equipped between outer end piston, lower outer end piston and curved friction steel plate, rub
Material is coated in the inner side of curved friction steel plate.Cylinder guide 25 is equipped with curve friction steel plate, cylinder guide is plugged on
The guide rod on outer cylinder top is slided in storehouse 26.The inside that storehouse is slided in guide rod is equipped with piezoelectric ceramic actuator 11, and guide rod slides storehouse
Top warehouse lid 32 and guide rod slip storehouse will be slided by flat head screw 13 are connected, piezoelectric ceramic actuator is packaged.Pressure
It is connected between electroceramics driver and force snesor by conducting wire 33, conducting wire is connected by plant-grid connection port 34 with external power.
Plant-grid connection port is placed on outer cylinder.
Claims (1)
1. piston type SMA- Piezoelectric anisotropy friction-changing dampers, mainly including outer cylinder, upper cylinder cover, outer end piston, curved friction
Steel plate, connecting rod, sliding axle, shape-memory alloy wire cable, secondary spring, precompressed bolt, adjusting nut, Piezoelectric Ceramic
Device, force snesor, flat head screw, connection bolt, flush end trip bolt, shape-memory alloy wire cable fixing bolt, lower cylinder cap, insert
Pin, annular fixing buckle, intermediate piston, perforate, spring fastening A, circular groove, friction material, cylinder guide, guide rod slide
Storehouse, screw thread, adjusting bolt, card falcon, block, sliding slot, slip warehouse lid, conducting wire, plant-grid connection port, spring fastening B, spring fastening
C, spring fastening D and secondary spring B, it is characterised in that：Outer cylinder is the hollow cylinder of upper and lower opening, in the upper end of outer cylinder and
Lower end, is connected by flat head screw with upper cylinder cover, lower cylinder cap respectively, and outer cylinder is divided into identical two parts, by connection bolt
Under be completely embedded, upper cylinder cover is circular tablet, and circumferentially periphery is equipped with equally distributed screwing through hole, tack on upper cylinder cover
Screw is plugged in through hole, is equipped with a circumferential thread hole on upper cylinder cover, grafting adjusting bolt A in threaded hole, adjusting bolt with
Adjusting nut is intermeshed, and through hole is equipped with the middle part of upper cylinder cover and lower cylinder cap, and upper cylinder cover is identical with the structure of lower cylinder cap, by
Connection bolt is vertically connected with closely, and sliding axle extends to the inside of outer cylinder by the through hole in the middle part of upper cylinder cover, and connecting rod passes through
Through hole in the middle part of lower cylinder cap extends to the inside of outer cylinder, and connecting rod is fixedly connected by latch with lower cylinder cap, in lower cylinder cap
Inner side is equipped with spring fastening A, identical equipped with 3 groups of the distance between screw threads, adjacent thread on the outer wall of sliding axle lower part,
The outside of the screw thread of upper, middle and lower group, engages upper outer end piston, intermediate piston and lower outer end piston respectively, upper outer end piston,
On intermediate piston and lower outer end piston, four radial hole are respectively equipped with, in upper outer end piston, intermediate piston and lower outer end piston
Top and bottom, be respectively equipped with annular fixing buckle, annular fixing buckle is ring plate, annular fixation be located on sliding axle,
Spring fastening B is arranged below in the annular fixing buckle of lower outer end piston lower portion, is equipped between spring fastening B and spring fastening A auxiliary
Spring A is helped, spring fastening C is fixedly connected with the inside of upper cylinder cover, the upper end of the annular fixing buckle of upper outer end upper piston area, is equipped with
Spring fastening D, is equipped with secondary spring B between spring fastening C and spring fastening D, secondary spring B is socketed on sliding axle, outside
Cylinder barrel is internally provided with four shape-memory alloy wire cables, and four shape-memory alloy wire cables point are arranged symmetrically up and down, point
Chuan Guo not the threaded hole of upper cylinder cover, the radial hole of upper outer end piston, the radial hole of intermediate piston, the radial direction of lower outer end piston
Through hole, lower cylinder cap threaded hole in, be fixedly connected by the adjusting bolt of upper cylinder cover and lower cylinder cap, adjusting nut, shape memory closes
It is inserted in the radial hole of intermediate piston in the fixing bolt of spun gold cable, and is remembered with flush end trip bolt and intermediate piston solid shape
Recall B alloy wire cable, upper stopper and lower block are equipped with the inner wall of outer cylinder, in the lower surface of upper stopper and the upper table of lower block
Face is respectively equipped with groove, the card falcon of the curved friction steel plate both sides of grafting is distinguished in the groove of upper stopper and lower block, curved
Circular groove is equipped with behind friction steel plate, precompressed bolt passes through outer cylinder, extends in circular groove, force snesor is placed in pre-
Press bolt bottom, intermediate piston, on be equipped with friction material between outer end piston, lower outer end piston and curved friction steel plate,
Friction material is coated in the inner side of curved friction steel plate, and cylinder guide, cylinder guide grafting are equipped with curve friction steel plate
Guide rod on outer cylinder top is slided in storehouse, and the inside that storehouse is slided in guide rod is equipped with piezoelectric ceramic actuator, and guide rod slides storehouse
Top will slide warehouse lid by flat head screw and be connected with guide rod slip storehouse, piezoelectric ceramic actuator is packaged, piezoelectric ceramics
It is connected between driver and force snesor by conducting wire, conducting wire is connected with external power by plant-grid connection port, power access end
Mouth is placed on outer cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610390616.3A CN105971357B (en) | 2016-06-02 | 2016-06-02 | Piston type SMA- Piezoelectric anisotropy friction-changing dampers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610390616.3A CN105971357B (en) | 2016-06-02 | 2016-06-02 | Piston type SMA- Piezoelectric anisotropy friction-changing dampers |
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| CN105971357A CN105971357A (en) | 2016-09-28 |
| CN105971357B true CN105971357B (en) | 2018-05-01 |
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| CN109519498A (en) * | 2018-08-20 | 2019-03-26 | 华侨大学 | SMA Self-resetting becomes friction damping device |
| JP7283964B2 (en) * | 2019-04-22 | 2023-05-30 | 株式会社ディスコ | processing equipment |
| CN111255106B (en) * | 2020-01-22 | 2021-05-07 | 西北工业大学 | Self-resetting piezoelectric friction damper |
| CN111371341B (en) * | 2020-03-24 | 2021-04-30 | 燕山大学 | Microminiature SMA oscillating tooth driven motor |
| CN111706142B (en) * | 2020-07-17 | 2024-05-28 | 大连理工大学 | Composite axial energy dissipation device based on piezoelectricity and shape memory alloy |
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