CN106567585A - Back pressure spiral compression spring damper adjustable in stiffness - Google Patents
Back pressure spiral compression spring damper adjustable in stiffness Download PDFInfo
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- CN106567585A CN106567585A CN201610903364.XA CN201610903364A CN106567585A CN 106567585 A CN106567585 A CN 106567585A CN 201610903364 A CN201610903364 A CN 201610903364A CN 106567585 A CN106567585 A CN 106567585A
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- steel wire
- wire rope
- compression spring
- pressure
- plate
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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
-
- 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
Abstract
The invention relates to a back pressure spiral compression spring damper adjustable in stiffness. The back pressure spiral compression spring damper is characterized in that a back pressure device is arranged between two end plates and comprises three or more prepressing steel wire ropes, a floating back pressure steel plate, steel wire rope turning elements and steel wire rope self-locking tensioning anchorage devices, and the number of the steel wire rope turning elements and the number of the steel wire rope self-locking tensioning anchorage devices are equal to the number of the prepressing steel wire ropes; the prepressing steel wire ropes are distributed on the periphery of a cylindrical spiral compression spring in a broken line state; one ends of all the prepressing steel wire ropes are symmetrically fixed to the floating back pressure steel plate around the axis of a guide rod, and the other ends of all the prepressing steel wire ropes are retraced after winding the corresponding steel wire rope turning elements in a penetrating mode, then penetrate through the floating back pressure steel plate from the positions beside fixing points of the prepressing steel wire ropes on the floating back pressure steel plate and are anchored to the end plate adjacent to the floating back pressure steel plate through the corresponding steel wire rope self-locking tensioning anchorage devices; and the prepressing steel wire ropes are tensioned to the tensile force required by the preset initial stiffness, so that the cylindrical spiral compression spring is always clamped between the end plate away from the floating back pressure steel plate and the floating back pressure steel plate.
Description
Technical field
The present invention relates to a kind of building vibration proof (or vibrations) device, and in particular to the damping unit of spiral compression spring.
Background technology
Antivibrator is the resistance to provide motion, the device of depletion kinergety.From after nineteen seventies, damping
Device is progressively converted in the Structural Engineerings such as building, bridge, railway from space flight, aviation, military project, firearms, automobile and other industries.Spiral bullet
Spring is due to load and the linear variation rigidity characteristic of deformation, therefore is widely used in the devices such as shock insulation, damping.Spiral shell
Rotation spring is classified by using method, mainly has extension spring, stage clip, wherein application of the cylindrical helical compression spring in antivibrator most
Generally.But, a specific cylindrical helical compression spring can only operate in compressive state in effective working range.
Therefore, wind resistance and earthquake-resistant antivibrator are currently used for and will at least use two cylindrical helical compression springs, or and other
The antivibrator (such as viscoelastic damper) of type is combined.But, it is this using many cylindrical helical compression springs or and its
The compound method of the antivibrator of its type can produce many negative problems, such as：1st, the stretching of antivibrator and the damping of compression are special
Property it is asymmetric, affect shock insulation, damping effect；2nd, volume is big, cannot install in small space；3rd, complex structure, production are difficult, into
This height；Etc..
Authorization Notice No. discloses a kind of wind resistance damping bullet for building for the utility application of CN 204081122U
Spring antivibrator, the antivibrator are directed to two elastomers (i.e. two cylindrical helical springs) in set and distinguish on center shaft
On middle limiter assembly, when antivibrator is tension or in compression, one of elastomer tension, another elastomer are pressurized, so as to reality
Existing wind resistance damping.But, the utility model patent is clearly present following shortcomings：1st, two cylindrical helical springs are needed, entirely
The length of antivibrator is longer, is not suitable in space mounting in small distance；2nd, two can not even cannot be can guarantee that in technique
The rigidity (including tensible rigidity and compression stiffness) of spring is equal, therefore wind direction difference damping effect is difference；3rd, cannot change
The rigidity of antivibrator, reaches default wind resistance rank, reduces the purpose of damping cost；4th, a cylindrical helical spring is being drawn simultaneously
Stretch and work under compression two states, the metal material and production technology of existing spring are difficult to meet and require, can only be by reducing
The regime of elastic deformation of cylindrical helical spring come realize stretching with compression two kinds of working conditions, this obviously can cause resource wave
Take.
Additionally, in antiseismic engineering, the initial stiffness of antivibrator is for wind load resistance, the anti-earthquake less than design seismic intensity
With reduce construction costs for be also highly important.A kind of " knot of the patent application publication of Publication No. CN 102409777A
Structure three-dimensional isolation and anti-overturning devices ", the device include being located at laminated rubber damping bearing bottom by cylindrical helical compression
The spring shock-proof bearing that spring is constituted, although the bearing is mainly a kind of three-dimensional isolation and anti-overturning devices, due to earthquake
Vertical ripple is two-way, therefore the device cannot isolate the negative wave that moment earth's surface is moved down.Additionally, also there is nothing in the device
Method changes the rigidity of antivibrator, reaches default antidetonation earthquake intensity, reduces the purpose of damping cost.
The application for a patent for invention of Publication No. CN101457553A discloses one kind, and " spring stiffness adjustable tuning quality subtracts
Shake device ", the vibroshock is a kind of composite buffer, changes its characteristic frequency by changing the thickness of mass, viscous by changing
The flow of the working media of stagnant antivibrator changes its damping ratio, changes its rigidity by the effective active length for changing spring, its
The means of the middle effective active length for changing spring have three kinds, and one is a section be located at spring using curing materials in solidification cylinder
Solidification, two fill in constraint block, and the two interference fit toward intracardiac in helical spring, make the one section of spring contacted with constraint block
Failure, three is to arrange helical raised on constraint block surface, and helical raised is stuck between spring wire, makes to block between spring wire
There is one section of spring failure of helical raised.As can be seen here, although the spring in the patent application scheme can change rigidity, institute
Not only effectively active length substantially shortens the spring stated, and can only compress passive energy dissipation, it is impossible to stretch passive energy dissipation.
The content of the invention
The technical problem to be solved is to provide a kind of adjustable back-pressure spiral compression spring antivibrator of rigidity, should
Antivibrator not only maintains effective active length of spiral compression spring group, and both compressible passive energy dissipations, and stretchable consumption
Can vibration damping.
The present invention solves the technical scheme of above-mentioned technical problem：
A kind of adjustable back-pressure spiral compression spring antivibrator of rigidity, the antivibrator include two end plates, described two pieces
Cylindrical helical compression spring is provided between end plate, one of end plate is provided with guide post, and the guide post is along the cylinder
The centre bore of spiral compression spring passes another end plate；Characterized in that,
Backpressure device is additionally provided between described two end plates, the backpressure device include more than three precompressed steel wire rope,
The steel wire rope break-in element equal with the precompressed steel wire rope quantity steel wire rope self-locking tensioning anchorage equal with precompressed steel wire rope quantity
With one block of floating back-pressure steel plate, wherein,
Described floating back-pressure steel plate is set on the guide post between cylindrical helical compression spring and one piece of end plate；
Described steel wire rope break-in element is held away from floating back-pressure steel plate around the axisymmetrical of described guide post
On end plate；
Described steel wire rope self-locking is tensioned anchorage by the first self-centering locking fixture, the second self-centering locking fixture, anti-torsion
Compression spring and plane bearing composition, wherein：
A the first self-centering locking fixture described in) has a connecting seat, is provided with axially extending in the middle part of the connecting seat one end
Cylindrical boss, the internal of the boss are provided with the first taper jaw being made up of 3-5 claw pieces along axial line, and outer peripheral face is arranged with
Tensioning swivel nut；Wherein, the microcephaly of first tapered clamp points to connecting seat, and the outer peripheral face of the tensioning swivel nut is regular hexagon；
B the second self-centering locking fixture described in) has a tapered sleeve, and the internal of the tapered sleeve is sequentially provided with by 3-5 along axis
The second taper jaw and hollow bolt of claw piece composition, wherein, the head and the second taper jaw of described hollow bolt
Major part is relative, and the outer peripheral face of the tapered sleeve is regular hexagon；
C the plane bearing described in) is by ball-retainer component and is respectively provided at the tensioning swivel nut end face relative with tapered sleeve
On ring raceway constitute, wherein described ring raceway is matched with the ball in ball-retainer component；
D) the second self-centering locking fixture is located at the outside of the tensioning swivel nut head, and the second taper jaw microcephaly
It is consistent with the sensing of the first taper jaw microcephaly；Described plane bearing is located between the tensioning swivel nut and tapered sleeve, described
Anti- compression spring of turning round is located in the endoporus of tensioning swivel nut；Pressure is turned round when Jing is anti-between calvus of the precompressed steel wire rope by the first taper jaw
After passing between the calvus of the centre bore and the second taper jaw of contracting spring and plane bearing, act in precompressed steel wire rope tension
Under, anti-turn round compression spring one is acted on the first taper jaw, and other end is acted on tapered sleeve；
Described precompressed steel wire rope is distributed in the surrounding of the cylindrical helical compression spring, and each with broken line state
One axisymmetrical around described guide post of precompressed steel wire rope is fixed on floating back-pressure steel plate, and other end passed around relative
A steel wire rope break-in element after turn back, then from the precompressed steel wire rope by the fixing point on floating back-pressure steel plate through floating
Dynamic back-pressure steel plate, is anchored on the end plate adjacent with floating back-pressure steel plate by steel wire rope self-locking tensioning anchorage；
On described floating back-pressure steel plate, it is equipped with through precompressed steel wire rope each precompressed steel wire penetrating position
Through hole, the aperture of the through hole are more than the diameter of the precompressed steel wire rope；
By the precompressed steel wire tensioning to tension force needed for default initial stiffness, described cylindrical helical compression spring is made
All the time it is clamped between the end plate and floating back-pressure steel plate away from floating back-pressure steel plate.
The operation principle of above-mentioned back-pressure spiral compression spring antivibrator is as follows：When dynamic loading is along the relative work of axis of fairlead
Used time, cylindrical helical compression spring is compressed downwards away from the end plate of floating back-pressure steel plate；When dynamic loading is along the axis of fairlead
Opposite when acting on, precompressed steel wire rope is reversely sling floating back-pressure steel plate compression cylindrical helical compression by steel wire rope break-in element
Spring.As can be seen here, no matter relative axial dynamic loading is or acts on back-pressure spiral compression spring antivibrator opposite to each other, can press
Contracting cylindrical helical compression spring so as to elastic deformation occurs and consumes energy.
It is from above-mentioned operation principle, logical on the precompressed steel wire rope described in the course of work and the floating back-pressure steel plate
The hole wall in hole can not produce friction, otherwise interfere with moving up and down for floating back-pressure steel plate, therefore the through-hole diameter compares institute
The diameter for stating precompressed steel wire rope is how many greatly, should be not disturbing and affect moving up and down for floating back-pressure steel plate to be advisable.
In such scheme, described steel wire rope break-in element is the suspension ring shape structure of common fixed pulley or similar break-in function
Part, such as lifting bolt, U-shaped component etc..
Back-pressure spiral compression spring antivibrator of the present invention, can be widely used for machinery and building field, and e.g., machinery sets
For the isolation of internal vibration, equipment Foundations shock insulation, the seismic hardening of building structure, antidetonation of heavy construction etc..
The adjustable back-pressure spiral compression spring antivibrator of rigidity of the present invention is had the effect that compared with prior art：
(1) apply external force along axis, no matter the external force is pressure or pulling force, described cylindrical helical compression spring is equal
Can produce elastic compression deformation and consume energy, overcome conventional helical compression spring antivibrator can only compression consume energy shortcoming；
(2) after defensive ability/resistance ability of the dynamic loading more than antivibrator default initial stiffness, back-pressure helical compression of the present invention
The deformation of spring-damper bidirectional elastic is symmetrical, therefore does not affect its compression to consume energy because of the change of the positive negative direction of external applied load
Effect, be that the Design of Reinforcement such as building structure wind load resistance are provided convenience condition；
(3) as long as the length for changing steel wire rope can change the initial stiffness of whole antivibrator, therefore used building
Vertical earthquake isolating when, predeterminable earthquake intensity significantly reduces shock insulation cost；
(4) two kinds of working conditions of stretching and compression be may be implemented in a cylindrical helical compression spring only, is significantly contracted
The short length of antivibrator.
(5) length for presetting the precompressed steel wire rope is predeterminable antivibrator initial stiffness, and the helical compression bullet
Spring does not have a circle to fail, i.e., effectively active length is constant, will not change the original characterisitic parameter of cylindrical helical compression spring.
(6) using steel wire rope self-locking tensioning anchorage one of steel wire rope is fixed on end plate, one be can be to pre- steel wire
The length of rope is adjusted, it is ensured that the equalization of strain of all precompressed steel wire ropes, and two are made by oneself using anti-torsion compression spring and first
The synergy of heart locking fixture, can effectively prevent precompressed steel wire rope from twisting during length adjustment is carried out and changing steel wire
The characterisitic parameter of drag-line.
Description of the drawings
Structural representation of Fig. 1～4 for a specific embodiment of back-pressure disk spring antivibrator of the present invention, its
In, Fig. 1 is front view (half-sectional), and Fig. 2 is A-A sectional views (omitting precompressed steel wire rope and protective jacket) of Fig. 1, and Fig. 3 is Fig. 1's
B-B sectional views (omit precompressed steel wire rope and protective jacket), and Fig. 4 is C-C cutaway view Amplified images in Fig. 3.
Fig. 5～9 are a tool of the anchorage of steel wire rope self-locking tensioning described in back-pressure disk spring antivibrator of the present invention
The structural representation of body embodiment, wherein, Fig. 5 is front view (half-sectional), and in figure, dotted line represents precompressed steel wire rope, and Fig. 6 is to look up
Figure, D-D profiles of the Fig. 7 for Fig. 5, E-E profiles of the Fig. 8 for Fig. 5, F-F sectional views of the Fig. 9 for Fig. 5.
Structural representation of Figure 10～13 for second specific embodiment of back-pressure disk spring antivibrator of the present invention,
Wherein, Figure 10 is front view (half-sectional), G-G sectional views (omit precompressed steel wire rope and protective jacket) of the Figure 11 for Figure 10, Tu12Wei
H-H sectional views (omitting precompressed steel wire rope and protective jacket) of Figure 10, Figure 13 is the schematic enlarged-scale view of Figure 10 local I.
Structural representation of Figure 14～18 for the 3rd specific embodiment of back-pressure disk spring antivibrator of the present invention,
Wherein, Figure 14 is front view (half-sectional), I-I sectional views (omit precompressed steel wire rope and protective jacket) of the Figure 15 for Figure 14, Tu16Wei
J-J sectional views (omitting precompressed steel wire rope and protective jacket) of Figure 14, K-K cutaway view Amplified images of the Figure 17 for Figure 16, Figure 18 are figure
The schematic enlarged-scale view of 14 local II.
Specific embodiment
Example 1
Referring to Fig. 1～3, this example is a kind of antivibrator reinforced for building structure aseismatic, and the antivibrator includes discoid
Upper head plate 1 and bottom plate 2, cylindrical helical compression spring 3 is provided between upper and lower end plate, wherein bottom plate 2 is provided with guiding
Bar 4, the centre bore of the guide post 4 upwards along cylindrical helical compression spring 3 pass upper head plate.
Referring to Fig. 1～4, described is additionally provided with backpressure device up and down between end plate, the backpressure device includes four pre- compressed steel
5, four 6, four steel wire rope self-lockings of lifting bolt as steel wire rope break-in element of cord are tensioned anchorages 13 and one piece is floated instead
Laminated steel 7.
Referring to Fig. 1, Fig. 3 and Fig. 4, floating back-pressure steel plate 7 is set between cylindrical helical compression spring 3 and bottom plate 2
Guide post 4 on.
Referring to Fig. 1 and Fig. 2, four lifting bolts 6 as steel wire rope break-in element are fixed around the axisymmetrical of guide post 4
On upper head plate 1.
Referring to Fig. 5～9, each steel wire rope self-locking tensioning anchorage 13 is locked by the first self-centering locking fixture, the second self-centering
Clamper, anti-torsion compression spring 13-1 and plane bearing 13-2 composition, wherein：
The first described self-centering locking fixture has a connecting seat 13-3, and the edge of connecting seat 13-3 is provided with installing hole
13-12, is provided with axially extending cylindrical boss 13-4 in the middle part of lower end, the internal of boss 13-4 is provided with first along axial line
Taper hole 13-5, is provided with the first taper jaw 13-7 being made up of 3 claw pieces in the taper hole, the outer peripheral face of the boss 13-4 is arranged
There is tensioning swivel nut 13-6, be threadedly coupled therebetween；Wherein, the microcephaly of first tapered clamp 13-7 points to connecting seat 13-3,
The outer peripheral face of the tensioning swivel nut 13-6 is regular hexagon；
The second described self-centering locking fixture has a tapered sleeve 13-8, internal being sequentially provided with along axis of tapered sleeve 13-8
One section of second taper hole 13-13 and one section of screwed hole；Wherein, it is provided with the second taper hole 13-13 and is bored by 3 claw pieces are constituted second
Clevis pawl 13-9, is provided with hollow bolt 13-10, the head of hollow bolt 13-10 and the second taper jaw in described screwed hole
The major part of 13-9 is relative, and the outer peripheral face of the tapered sleeve 13-8 is regular hexagon；
Described plane bearing 13-2 is by ball-retainer component 13-11 and is respectively provided at tensioning swivel nut 13-6 and tapered sleeve
Ring raceway on 13-8 relative end face is constituted, wherein in described ring raceway and ball-retainer component 13-11
Ball matches；
The second self-centering locking fixture is located at the outside of tensioning swivel nut 13-6 heads, and the second taper jaw 13-9
Microcephaly is consistent with the sensing of the first taper jaw 13-7 microcephalies；Described plane bearing 13-2 be located at the tensioning swivel nut 13-6 and
Between tapered sleeve 13-8, described anti-torsion compression spring 13-1 is located in the endoporus of tensioning swivel nut 13-6.When precompressed steel wire rope 5 is by
Anti- centre bore and the second tapers for turning round compression spring 13-1 and plane bearing 13-2 of Jing between the calvus of one taper jaw 13-7
After passing between the calvus of jaw 13-9, under 5 tension force effect of precompressed steel wire rope, an anti-work for turning round compression spring 13-1
On the first taper jaw 13-7, other end is acted on tapered sleeve 13-8.
Referring to Fig. 1～4, the axisymmetrical on the floating back-pressure steel plate 7 around guide post 4 is provided with four lifting bolts 6, institute
The outside of bottom plate 2 is stated, and four institutes is correspondingly provided with by the relative position of set four lifting bolts 6 on the floating back-pressure steel plate 7
State steel wire rope self-locking tensioning anchorage 13；Four precompressed steel wire ropes 5 are distributed in the four of cylindrical helical compression spring 3 with broken line state
Week, and of each precompressed steel wire rope 5 is to connect to be fixed on floating back-pressure steel plate 7 on set lifting bolt 6, other end is worn
Turn back after bypassing a lifting bolt 6 of relative as steel wire rope break-in element, then the precompressed steel wire rope 5 is from bottom plate 2
The relative position of upper set steel wire rope self-locking tensioning anchorage 13 passes through floating back-pressure steel plate 7, is tensioned anchorage 13 by steel wire rope self-locking
On the anchoring bottom plate 2 adjacent with floating back-pressure steel plate 7；On described floating back-pressure steel plate 7, in each precompressed steel wire rope 5
The through hole 8 through precompressed steel wire rope 5 is equipped with through position, the aperture of the through hole 8 is more than the diameter of the precompressed steel wire rope 5；
On described bottom plate 2, the anchor hole 16 of anchoring precompressed steel wire rope 5 is equipped with through position in each precompressed steel wire rope 5.
Referring to Fig. 1～4 and with reference to Fig. 5～9, in order to realize the purpose of predeterminable initial stiffness, above-mentioned four pre- steel wires
The installation of rope 5 and tensioning method are as described below：(1) first according to the default initial stiffness of antivibrator and the characteristic of precompressed steel wire rope 5
Parameter, calculates the tension force that precompressed steel wire rope 5 meets antivibrator initial stiffness；(2) by Fig. 1 by floating back-pressure steel plate 7, cylinder
Spiral compression spring 3, upper head plate 1 are sleeved on guide post 4, then successively, are to be connected on floating by one of precompressed steel wire rope 5
On back-pressure steel plate 7 on set lifting bolt 6, other end passed around the lifting bolt 6 on upper head plate 1 as steel wire rope break-in element
After turn back, then sequentially pass through on floating back-pressure steel plate 7 set via 16 and steel wire rope self-locking on set through hole 8, bottom plate 2
Tight anchorage 13；Then, (3) are connected on the fag end system of the precompressed steel wire rope 5 for exposing on traction stretching machine, and in the same of traction tensioning
The tension force of Shi Caiyong tension detecting instruments monitoring precompressed steel wire rope 5；When the precompressed steel wire rope 5 is tensioned to needed for default initial stiffness
During tension force, the second self-centering locking fixture is moved forward, while adjust turning tensioning swivel nut 13-6 so that plane bearing 13-2 quilts
Tightly it is clipped between the tensioning swivel nut 13-6 and tapered sleeve 13-8, and anti-torsion compression spring 13-1 is compressed, opening produced by which
Push dynamic first taper jaw 13-7 reaches to clamp precompressed steel wire rope 5, turning described hollow bolt 13-10 thereafter will be located at
In second taper jaw 13-9, precompressed steel wire rope 5 is pressed from both sides extremely；Finally, traction stretching machine is removed, unnecessary precompressed steel wire rope 5 is blocked,
Cylindrical helical compression spring 3 can be clamped between upper head plate 1 and floating back-pressure steel plate 7 all the time.
Referring to Fig. 1 and Fig. 5～9, in the work progress for installing antivibrator or in routine maintenance procedure, if it find that certain is pre-
The tension force of compressed steel cord 5 is not enough, you can the tensioning swivel nut 13-6 turned in steel wire rope self-locking tensioning anchorage 13 is adjusted.
Referring to Fig. 1, the upper surface of upper head plate 1 is arranged with two parallel lugs 9 in the outside of guide post 4, two lugs 9
Head is provided with hinge hole 10；The lower surface of bottom plate 2 is provided with another lug 9 along the axis of guide post 4, the head of the lug 9
It is provided with hinge hole 10.
Referring to Fig. 1, antivibrator is affected in order to prevent dust and other debris from falling on cylindrical helical compression spring 3
Normal work, upper head plate 1 are arranged with soft protective jacket 11 with 2 surrounding of bottom plate, and the top of the protective jacket 11 is bonded at upper head plate 1
Upper surface, following is bonded at the lower surface of bottom plate 2.The length of the protective jacket 11 is glued with following more than 1 upper surface of upper head plate
Distance between 2 lower surface of bottom plate, in order to avoid affect the work of antivibrator.
Referring to Fig. 1～4, the operation principle of the antivibrator reinforced for building structure aseismatic described in this example is as follows：When being more than
The dynamic loading of design dead load along guide post 4 axis it is relative act on the lug up and down of antivibrator when, cylindrical helical pressure
Contracting spring 3 is compressed, 10 relative movement of hinge hole on upper and lower lug；When the dynamic loading more than design dead load is along guide post 4
Axis when acted on the lug up and down of antivibrator opposite to each other, four precompressed steel wire ropes 5 are respectively by being used as steel wire rope break-in unit
The lifting bolt 6 of part reversely sling floating back-pressure steel plate 7 compression cylindrical helical compression spring 3, the hinge hole on upper and lower lug
10 reverse movements.As can be seen here, no matter relative axial dynamic loading is or acts on back-pressure spiral compression spring antivibrator opposite to each other,
Cylindrical helical compression spring 3 can be compressed so as to elastic deformation occurs and consumes energy.
Example 2
This example is also a kind of antivibrator reinforced for building structure aseismatic, the antivibrator and vibration damper described in example 1
Differ primarily in that described backpressure device is different.Hereinafter the backpressure device of this example is described.
Referring to Figure 10～13, the backpressure device of this example is located between upper head plate 1 and bottom plate 2, and the backpressure device includes four
5, four 12, the four steel wire rope self-lockings of U-shaped component as steel wire rope break-in element of root precompressed steel wire rope are tensioned anchorage 13 and
Block floating back-pressure steel plate 7.
Referring to Figure 10 and Figure 11, floating back-pressure steel plate 7 is set between cylindrical helical compression spring 3 and upper head plate 1
On guide post 4.
Referring to Figure 11 and Figure 12～13, axis pair of four U-shaped components 12 as steel wire rope break-in element around guide post 4
Title is welded and fixed on bottom plate 2.Each U-shaped component 12 is made up of round steel bending, in the phase for arranging U-shaped component 12 on bottom plate 2
Position is answered to be provided with the fabrication hole matched with 15 two sides of U-shaped component, U-shaped component 12 is inserted in the fabrication hole, the two welding
It is fixed together.
Referring to Fig. 5～9, in this example, the structure of steel wire rope self-locking tensioning anchorage 13 is identical with example 1.
Referring to Figure 10～13, the axisymmetrical on the floating back-pressure steel plate 7 around guide post 4 is provided with four lifting bolts 6
(U-shaped component 12 obviously may also be employed), the outside of the upper head plate 1, set four lifting bolts 6 on floating back-pressure steel plate 7
Relative position by be correspondingly provided with four steel wire rope self-lockings and be tensioned anchorages 13；Four precompressed steel wire ropes 5 are with broken line state point
Surrounding of the cloth in cylindrical helical compression spring 3, and of each precompressed steel wire rope 5 is fixed on by the lifting bolt 6
On floating back-pressure steel plate 7, other end was turned back after passing around a U-shaped component 12 of relative as steel wire rope break-in element, so
The precompressed steel wire rope 5 relative position of set steel wire rope self-locking tensioning anchorage 13 from upper head plate 1 passes through floating back-pressure steel plate afterwards
7, it is anchored on the upper head plate 1 adjacent with floating back-pressure steel plate 7 by steel wire rope self-locking tensioning anchorage 13；Described floating is anti-
On laminated steel 7, through hole 8 through precompressed steel wire rope 5, the hole of the through hole 8 are equipped with through position in each precompressed steel wire rope 5
Diameter of the footpath more than the precompressed steel wire rope 5；On described upper head plate 1, it is equipped with through position in each precompressed steel wire rope 5
The anchor hole 16 of anchoring precompressed steel wire rope 5.
This example makees the installation of four precompressed steel wire ropes 5 and tensioning method is same as Example 1.
This example other implementations other than the above are same as Example 1.
The operation principle for being used for building structure aseismatic reinforcing antivibrator described in this example is same as Example 1, and the public can refer to example 1 certainly
Row analysis.
Example 3
Referring to Figure 14～18, the antivibrator described in this example be a kind of vertical earthquake isolating equipment for Antiseismic building (also referred to as
Vertical earthquake isolating bearing), it includes discoid upper head plate 1 and bottom plate 2, and cylindrical helical compression bullet is provided between upper and lower end plate
Spring 3, wherein upper head plate 1 are provided with guide post 4, and the centre bore of the guide post 4 upwards along cylindrical helical compression spring 3 is passed down
End plate 2.
Referring to Figure 14, the edge of 2 surrounding of the upper head plate 1 and bottom plate is respectively equipped with land installing hole 14, wherein lower end
Plate 2 swells to form inverted washbowl shape for middle part upwards, and center is provided with the hole matched with guide post 4.
Referring to Figure 14～18, described is provided with backpressure device up and down between end plate, the backpressure device includes the pre- compressed steel of land root
Cord 5, land is only used as the fixed pulley 15 of steel wire rope break-in element, land steel wire rope self-locking tensioning anchorage 13 and one piece of floating back-pressure
Steel plate 7.
Referring to Figure 14, Figure 16 and Figure 17, floating back-pressure steel plate 7 be set in cylindrical helical compression spring 3 and bottom plate 2 it
Between guide post 4 on.
Referring to Figure 14 and Figure 15, the fixed pulley 15 that land is only used as steel wire rope break-in element is solid around the axisymmetrical of guide post 4
Determine on upper head plate 1.
Referring to Fig. 5～9, in this example, the structure of steel wire rope self-locking tensioning anchorage 13 is identical with example 1.
Referring to Figure 14～18, the axisymmetrical on the floating back-pressure steel plate 7 around guide post 4 is provided with land lifting bolt 6,
The outside of the bottom plate 2, is correspondingly provided with land by the relative position of set land lifting bolt 6 on the floating back-pressure steel plate 7 individual
The steel wire rope self-locking is tensioned anchorage 13；Land root precompressed steel wire rope 5 is distributed in cylindrical helical compression spring 3 with broken line state
Surrounding, and of each precompressed steel wire rope 5 is fixed on floating back-pressure steel plate 7 by the lifting bolt 6, other end passes around
Cross after relative one is only used as the fixed pulley 15 of steel wire rope break-in element and turn back, then the precompressed steel wire rope 5 institute from bottom plate 2
If the relative position of steel wire rope self-locking tensioning anchorage 13 passes through floating back-pressure steel plate 7, anchorage 13 is tensioned by the steel wire rope self-locking
It is anchored on the bottom plate 2 adjacent with floating back-pressure steel plate 7；On described floating back-pressure steel plate 7, in each precompressed steel wire rope
5 are equipped with the through hole 8 through precompressed steel wire rope 5 through position, and the aperture of the through hole 8 is more than the diameter of the precompressed steel wire rope 5；
On described bottom plate 2, the anchor hole 16 of anchoring precompressed steel wire rope 5 is equipped with through position in each precompressed steel wire rope 5.
Referring to Figure 14～18, in this example, the installation of land root precompressed steel wire rope 5 and tensioning method are also same as Example 1.
This example other implementations other than the above are same as Example 1.
Under ideal conditions, when the vertical ripple of earthquake passes through earthquake isolating equipment to building transmission, building should be unable to be sent out
Raw displacement.Based on this, the operation principle of the earthquake isolating equipment of Antiseismic building described in this example is as follows：Referring to Figure 14, when erecting for earthquake
When overcoming the initial stiffness of antivibrator to the dynamic loading produced by ripple, if the dynamic loading is pushed along the axis of guide post 4
End plate 2, the counteracting force of upper head plate 1 just compress downwards cylindrical helical compression spring 3, and bottom plate 2 is built with moving on ground
Thing is motionless；If, along the drop-down bottom plate 2 of axis of guide post 4, precompressed steel wire rope 5 is then by being used as steel wire rope break-in for the dynamic loading
The fixed pulley 15 of element is reversely sling floating back-pressure steel plate 7, compresses cylindrical helical compression spring 3 upwards, and bottom plate 2 is with ground
Move down, but still building is motionless.As can be seen here, the compressible cylindrical spiral shell when P wave makes ground that up-down vibration to occur
Rotation compression spring 3 produces elastic deformation and consumes energy.
Claims (4)
1. the adjustable back-pressure spiral compression spring antivibrator of a kind of rigidity, the antivibrator include two end plates, two pieces of described ends
Cylindrical helical compression spring is provided between plate, one of end plate is provided with guide post, the guide post is along the cylindrical spiral shell
The centre bore of rotation compression spring passes another end plate；Characterized in that,
Backpressure device is additionally provided between described two end plates, the backpressure device includes the precompressed steel wire rope of more than three and pre-
The equal steel wire rope break-in element of the compressed steel cord quantity steel wire rope self-locking tensioning anchorage and equal with precompressed steel wire rope quantity
Block floating back-pressure steel plate, wherein,
Described floating back-pressure steel plate is set on the guide post between cylindrical helical compression spring and one piece of end plate；
Described steel wire rope break-in element is held away from the end plate of floating back-pressure steel plate around the axisymmetrical of described guide post
On；
Described steel wire rope self-locking is tensioned anchorage by the first self-centering locking fixture, the second self-centering locking fixture, locking compression
Spring and plane bearing composition, wherein：
A the first self-centering locking fixture described in) has a connecting seat, and the middle part of the connecting seat one end has axially extending cylinder
Shape boss；The internal of the cylindrical boss is provided with the taper hole that connecting seat is pointed in a tip along axial line, and outer peripheral face is arranged with to be opened
Tight swivel nut；The first jaw matched with which is provided with the taper hole of the cylindrical boss, first jaw is by 3-5 claw piece groups
Into；
B the second self-centering locking fixture described in) is made up of tapered sleeve and the second matched jaw, wherein, described second
Jaw is also made up of 3-5 claw pieces；
C) the second self-centering locking fixture is located at the outside of the tensioning swivel nut head, and the tip of the second jaw points to the
One jaw, the plane bearing are located between described tensioning swivel nut and tapered sleeve, and described locking compression spring sets tensioning swivel nut
Hole in；When the centre bore of the locking compression springs of Jing and plane bearing between calvus of the precompressed steel wire rope by the first jaw and the
After passing between the calvus of two jaws, under the effect of precompressed steel wire rope tension, one of the locking compression spring acts on the
On one jaw, other end is acted on described tapered sleeve；
D) via that passes through precompressed steel wire rope is provided with the relative position of the through hole on the end plate adjacent with floating back-pressure steel plate,
Described steel wire rope self-locking tensioning anchorage is located on the end plate on the outside of the via；
Described precompressed steel wire rope is distributed in the surrounding of the cylindrical helical compression spring, and each precompressed with broken line state
One axisymmetrical around described guide post of steel wire rope is fixed on floating back-pressure steel plate, and other end passed around relative
Turn back after one steel wire rope break-in element, then pass through by the fixing point on floating back-pressure steel plate from the precompressed steel wire rope and float
Back-pressure steel plate, is anchored on the end plate adjacent with floating back-pressure steel plate by steel wire rope self-locking tensioning anchorage；
On described floating back-pressure steel plate, it is equipped with through the logical of precompressed steel wire rope each precompressed steel wire penetrating position
Hole, the aperture of the through hole are more than the diameter of the precompressed steel wire rope；
By the precompressed steel wire tensioning to tension force needed for default initial stiffness, described cylindrical helical compression spring is made all the time
It is clamped between the end plate and floating back-pressure steel plate away from floating back-pressure steel plate.
2. the adjustable back-pressure spiral compression spring antivibrator of a kind of rigidity according to claim 1, it is characterised in that this is anti-
Pressure butterfly spring antivibrator is the antivibrator reinforced for building structure aseismatic.
3. the adjustable back-pressure spiral compression spring antivibrator of a kind of rigidity according to claim 1, it is characterised in that this is anti-
Pressure butterfly spring antivibrator is the vertical earthquake isolating equipment for Antiseismic building.
4. the adjustable back-pressure spiral compression spring antivibrator of a kind of rigidity according to claim 1,2 or 3, its feature exist
In described steel wire rope break-in element is fixed pulley, lifting bolt or U-shaped component.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610903364.XA CN106567585A (en) | 2016-10-17 | 2016-10-17 | Back pressure spiral compression spring damper adjustable in stiffness |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903364.XA CN106567585A (en) | 2016-10-17 | 2016-10-17 | Back pressure spiral compression spring damper adjustable in stiffness |
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| CN106567585A true CN106567585A (en) | 2017-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982663A (en) * | 2021-09-24 | 2022-01-28 | 中国矿业大学(北京) | Yielding anchor rod and supporting method |
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| CN201460241U (en) * | 2009-07-09 | 2010-05-12 | 北京公科固桥技术有限公司 | Prestress high-strength steel mesh anchorage |
| CN102409777A (en) * | 2011-09-30 | 2012-04-11 | 福州大学 | Structural three-dimensional shock isolation and anti-overturning device |
| CN105370043A (en) * | 2015-09-29 | 2016-03-02 | 中国建筑第二工程局有限公司 | Stranded wire harness guiding device and stranded wire harness penetrating method |
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| CN87100223A (en) * | 1987-02-07 | 1987-08-12 | 华东建筑设计院 | Prestressed damping spring vibration-reducing apparatus |
| CN200943268Y (en) * | 2006-09-11 | 2007-09-05 | 广州大学 | Improved tri-dimensional shock insulation device |
| CN201136517Y (en) * | 2007-12-18 | 2008-10-22 | 中国北车集团四方车辆研究所 | Bidirectional buffer for pulling-pressing conversion of elastic body |
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| CN113982663A (en) * | 2021-09-24 | 2022-01-28 | 中国矿业大学(北京) | Yielding anchor rod and supporting method |
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