CN106382321A - Back pressure type spiral spring damper with adjustable initial rigidity - Google Patents
Back pressure type spiral spring damper with adjustable initial rigidity Download PDFInfo
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- CN106382321A CN106382321A CN201610903683.0A CN201610903683A CN106382321A CN 106382321 A CN106382321 A CN 106382321A CN 201610903683 A CN201610903683 A CN 201610903683A CN 106382321 A CN106382321 A CN 106382321A
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- steel wire
- wire rope
- back pressure
- steel plate
- compression spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a back pressure type spiral spring damper with adjustable initial rigidity. The back pressure type spiral spring damper is characterized in that a back pressure device is further arranged in a guide sleeve, wherein the back pressure device comprises three or more pre-compaction steel wire ropes, steel wire rope turning elements which are as many as the pre-compaction steel wire ropes, a steel wire rope self-locking tensioning anchorage device and a floating back pressure steel plate; the pre-compaction steel wire ropes are distributed in a central hole of a cylindrical spiral compression spring in a folding mode; one end of each pre-compaction steel wire rope is symmetrically fixedly arranged on the floating back pressure steel plate around the axis of the guide sleeve; the other end of each pre-compaction steel wire rope is turned back after passing through one opposite steel wire rope turning element and is paralleled to be a rope bundle, then, passes through the floating back pressure steel plate from a fixed point, which allows the axis of the guide sleeve to pass through, on the floating back pressure steel plate, and is fixedly arranged on a second end cover the steel wire rope self-locking tensioning anchorage device; and each pre-compaction steel wire rope is tensioned to tension needed for setting initial rigidity, so that the composite spring is clamped between a drive component and the floating back pressure steel plate all the time.
Description
Technical field
The present invention relates to a kind of building vibration proof (or vibrations) device is and in particular to comprise the damping dress of spiral compression spring
Put.
Background technology
Antivibrator is the device of depletion kinergety in the way of the resistance providing motion.From nineteen seventies
Afterwards, antivibrator is progressively converted to the Structural Engineerings such as building, bridge, railway from space flight, aviation, military project, firearms, automobile and other industries
In.The helical spring variation rigidity characteristic linear with deformation due to having load, is therefore widely used in shock insulation, damping etc.
In device.Helical spring is pressed using method and is classified, and mainly has extension spring, stage clip, wherein cylindrical helical compression spring is in antivibrator
In application the most universal.But, a specific cylindrical helical compression spring, can only operate in effective working range
Compressive state.Therefore, it is currently used for wind resistance and earthquake-resistant antivibrator at least will use two cylindrical helical compression springs, or
Person is combined with other types of antivibrator (as viscoelastic damper).But, this using many cylindrical helical compression springs
Or the method being combined with other types of antivibrator can produce much negative problem, such as：1st, the stretching of antivibrator and compression
Damping characteristic asymmetric, impact shock insulation, damping effect；2nd, volume is big, cannot install in small space；3rd, complex structure, raw
Produce difficult, high cost；Etc..
Authorization Notice No. is that the utility application of CN 204081122 U discloses a kind of wind resistance damping for building
Spring-damper, two elastomers (i.e. two cylindrical helical springs) that this antivibrator is directed in set are connected in central shaft respectively
On middle limiter assembly on, when antivibrator is tension or in compression, one of elastomer tension, another elastomer is pressurized, from
And realize wind resistance damping.But, this utility model patent is clearly present following shortcomings：1st, two cylindrical helical springs are needed,
The length of whole antivibrator is longer, is not suitable for apart from less space mounting；2nd, in technique cannot even it cannot guarantee that
The rigidity (including tensible rigidity and compression stiffness) of two springs is equal, and therefore wind direction difference damping effect is difference；3rd, cannot
Change the rigidity of antivibrator, reach default wind resistance rank, reduce the purpose of damping cost；4th, a cylindrical helical spring is simultaneously
Work under stretching with compression two states, the metal material of existing spring and production technology are difficult to meet and require, and can only pass through
Reduce the regime of elastic deformation of cylindrical helical spring to realize two kinds of working conditions of stretching and compression, this obviously can cause resource
Waste.
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 ", this device include being located at laminated rubber damping bearing bottom by cylindrical helical compression
The spring shock-proof bearing that spring is constituted, although this bearing is mainly a kind of three-dimensional isolation and anti-overturning devices, due to earthquake
Vertical ripple is two-way, and therefore this device cannot isolate the negative wave that moment earth's surface moves down.Additionally, this device also exists no
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 ", this 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 changing spring, its
The means of the middle effective active length changing spring have three kinds, and one is section spring being located in solidification cylinder using curing materials
Solidification, two fill in constraint block toward intracardiac in helical spring, and the two interference fit, make the one section of spring contacting with constraint block
Lost efficacy, three is to arrange helical raised on constraint block surface, and helical raised is stuck between spring wire, makes card between spring wire
There is one section of spring failure of helical raised.As can be seen here, although the spring in this 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.
Content of the invention
The technical problem to be solved is to provide a kind of initial stiffness adjustable back pressure type coiled spring damper,
This antivibrator not only maintains effective active length of cylindrical helical compression spring, and both compressible passive energy dissipations, may be used again
Stretching passive energy dissipation.
The present invention solve above-mentioned technical problem technical scheme be：
A kind of adjustable back pressure type coiled spring damper of initial stiffness, this antivibrator includes fairlead, this fairlead
One is provided with the first end cap, and other end is provided with the second end cap, and inside is coaxially provided with cylindrical helical compression spring；One drive member
Put in fairlead and acted on described cylindrical helical compression spring by the first end cap central；It is characterized in that,
It is additionally provided with backpressure device, this backpressure device includes the precompressed steel wire rope of more than three and pre- in described fairlead
The equal steel wire rope break-in element of compressed steel cord quantity, a steel wire rope self-locking tensioning anchorage and one block of floating back-pressure steel plate, its
In,
Described floating back-pressure steel plate is located between cylindrical helical compression spring and the second end cap；
Described steel wire rope break-in element is fixed in described drive member around the axisymmetrical of described fairlead；
Described steel wire rope self-locking tensioning anchorage is 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, and the middle part of this connecting seat one end is provided with axially extended
Cylindrical boss, the internal of this boss is provided with, along axial line, the first taper jaw being made up of 3～5 claw pieces, and outer peripheral face is sheathed
There is tensioning swivel nut；Wherein, the microcephaly of described first tapered clamp points to connecting seat, and the outer peripheral face of described tensioning swivel nut is positive six sides
Shape；
B the second self-centering locking fixture described in) has a tapered sleeve, and the internal of this tapered sleeve is sequentially provided with by 3～5 along axis
Second taper jaw of claw piece composition and hollow bolt, wherein, the described head of hollow bolt and the second taper jaw
Relatively, the outer peripheral face of described tapered sleeve is regular hexagon to major part；
C the plane bearing described in) is by the ball retainer assembly end face relative with tapered sleeve with being respectively provided at tensioning swivel nut
On ring raceway constitute, wherein said ring raceway matched with the ball in ball retainer assembly；
D) described second self-centering locking fixture is located at the outside of described tensioning swivel nut head, and the second taper jaw microcephaly
Consistent with the sensing of the first taper jaw microcephaly；Described plane bearing is located between described tensioning swivel nut and tapered sleeve, described
Anti- torsion compression spring is located in the endoporus of tensioning swivel nut；Turn round pressure through anti-between precompressed steel wire rope is by the calvus of the first taper jaw
After passing between the calvus of the centre bore of contracting spring and plane bearing and the second taper jaw, in the effect of precompressed steel wire rope tension
Under, described anti-turn round compression spring one acts on the first taper jaw, and other end acts on tapered sleeve；
Described precompressed steel wire rope is distributed in the center in the hole of cylindrical helical compression spring with broken line state, and each
One axisymmetrical around described fairlead of precompressed steel wire rope is fixed on floating back-pressure steel plate, and other end passed around relatively
A steel wire rope break-in element after turn back, then all of precompressed steel wire rope be listed as rope bundle, lead from floating back-pressure steel plate
To covering the point of axis process through floating back-pressure steel plate, it is fixed on the second end cap by steel wire rope self-locking tensioning anchorage；Described
On floating back-pressure steel plate, described rope bundle through position be provided through the through hole of described rope bundle, the aperture of this through hole is more than institute
State the diameter of rope bundle；
By precompressed steel wire tensioning to arranging tension force needed for initial stiffness, make described cylindrical helical compression spring all the time
It is clamped between drive member and floating back-pressure steel plate.
The operation principle of above-mentioned antivibrator is as follows：When dynamic loading relatively acts on along the axis of fairlead, described driving
Component compresses downwards cylindrical helical compression spring；When dynamic loading acts on opposite to each other along the axis of fairlead, precompressed steel wire rope leads to
Cross steel wire rope break-in element reversely to sling floating back-pressure steel plate compression cylindrical helical compression spring.As can be seen here, axial dynamic load
No matter relative lotus is or acts on antivibrator opposite to each other, can compress cylindrical helical compression spring so as to there is elastic deformation
And consume energy.
From above-mentioned operation principle, logical on the precompressed steel wire rope described in work process and described floating back-pressure steel plate
The hole wall in hole can not produce friction, otherwise interferes with moving up and down of floating back-pressure steel plate, and therefore described through-hole diameter compares institute
The diameter stating the rope bundle that precompressed steel wire rope forms side by side is how many greatly, not disturb and should affect moving up and down of floating back-pressure steel plate
It is 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..
The adjustable back pressure type coiled spring damper of initial stiffness of the present invention, wherein said precompressed steel wire rope is solid
One being scheduled on floating back-pressure steel plate can may also be employed similar lifting bolt system and connect fixation using being welded and fixed.
Antivibrator of the present invention, can be widely used for various one-dimensional fields, e.g., plant equipment internal vibration every
From, equipment Foundations shock insulation, building structure refer to seismic hardening, antidetonation of heavy construction etc..
The initial stiffness adjustable back pressure type coiled spring damper of the present invention has the advantages that compared with prior art：
(1) apply external force along axis, no matter this external force is pressure or pulling force, and described cylindrical helical compression spring is equal
Elastic compression deformation can be produced and consume energy；
(2) after dynamic loading is more than the defensive ability/resistance ability that antivibrator presets initial stiffness, the two-way bullet of antivibrator of the present invention
Property deformation symmetrical, therefore do not affect the effect of its compression power consumption because of the change of the positive negative direction of external applied load, for building knot
The Design of Reinforcement such as structure wind load resistance are provided convenience condition；
(3) as long as the length changing steel wire rope can change the initial stiffness of whole antivibrator, external force is overcoming this early stage
Antivibrator cannot be made before rigidity to be deformed, therefore used building vertical earthquake isolating when, predeterminable earthquake intensity, significantly
Reduce shock insulation cost；
(4) only can achieve two kinds of working conditions of stretching and compression with a spiral compression spring, significantly shorten damping
The length of device.
(5), during presetting initial stiffness, effective active length of described cylindrical helical compression spring is constant, Bu Huigai
Become the original characterisitic parameter of cylindrical helical compression spring.
(6) using steel wire rope self-locking tensioning anchorage, one of precompressed steel wire rope is fixed on the second end cap, one is can be right
The length of precompressed steel wire rope is adjusted, and two is to turn round compression spring and the synergy of the first self-centering locking fixture using anti-,
Can effectively prevent precompressed steel wire rope from twisting during carrying out length adjustment and changing the characterisitic parameter of wire digging line.
Brief description
Fig. 1～5 are the structural representation of a specific embodiment of antivibrator of the present invention, and wherein, Fig. 1 is front view
(the C C rotation of Fig. 3 is cutd open), Fig. 2 is the A A sectional view (omitting precompressed steel wire rope) of Fig. 1, and Fig. 3 is the B B sectional view of Fig. 1
(omitting precompressed steel wire rope), Fig. 4 is the schematic enlarged-scale view of Fig. 1 local I, and Fig. 5 is the schematic enlarged-scale view of Fig. 1 local II.
Fig. 6～10 are the structural representation of steel wire rope self-locking tensioning anchorage in the illustrated embodiment of Fig. 1～5, and wherein, Fig. 6 is
Front view (section view), in figure dotted line represents precompressed steel wire rope, and Fig. 7 is upward view, and Fig. 8 is the D D profile of Fig. 6, and Fig. 9 is Fig. 6
E E profile, Figure 10 be Fig. 6 F F sectional view.
Figure 11～14 are the structural representation of second specific embodiment of antivibrator of the present invention, wherein, Tu11Wei
Front view (section view), Figure 12 is the G G sectional view (omitting precompressed steel wire rope) of Figure 11, and Figure 13 is that the H H sectional view of Figure 11 (saves
Slightly precompressed steel wire rope), Figure 14 is the I I cutaway view Amplified image of Figure 12.
Figure 15～19 be antivibrator of the present invention the 3rd specific embodiment structural representation, wherein, Figure 15
For front view (the L L rotation of Figure 17 is cutd open), Figure 16 is the J J sectional view (omitting precompressed steel wire rope) of Figure 15, and Figure 17 is Figure 15
K K sectional view (omit precompressed steel wire rope), Figure 18 is the schematic enlarged-scale view of Figure 15 local III, and Figure 19 is Figure 15 local IV
Schematic enlarged-scale view.
Specific embodiment
Example 1
Referring to Fig. 1～5, the antivibrator described in this example is that a kind of vertical earthquake isolating equipment for Antiseismic building is (also referred to as perpendicular
To shock isolating pedestal), it includes fairlead 1, the first end cap 2, the second end cap 3, cylindrical helical compression spring 4 and backpressure device.
Referring to Fig. 1～3, described fairlead 1 is circular tube shaped, and its upper end is radially shunk formation center and had pilot hole
The first end cap 2, lower end extend radially outwards formation one ring flange 5.The middle part of the second described end cap 3 is swelled formation upwards and is fallen
The washbowl shape put, the edge of surrounding is provided with installing hole 6, and it is grand that the ring flange 5 that described fairlead 1 passes through set by lower end is fixed on it
The upper surface at the middle part risen.
Referring to Fig. 1～3, described drive member is made up of dynamic pressure plate 7 and upper junction plate 8, and wherein, upper junction plate 8 is circle
Plate-like, edge is provided with installing hole 6, and the center of lower surface extends downwardly the boss playing the guiding role, and this boss is by the first end cap 2
Set pilot hole puts in fairlead 1, and is fixed together with dynamic pressure plate 7 by screw.
Referring to Fig. 1～3, described cylindrical helical compression spring 4 is coaxially located in fairlead 1, dynamic in drive member
Pressing plate 7 acts on end face thereon.Referring to Fig. 1, between upper junction plate 8 and the first end cap 2, it is provided with the gap 14 more than amplitude；In order to
Avoid producing between the dynamic pressure plate 7 of drive member described in vibration processes and the first end cap 2 and clash into, described dynamic pressure plate 7 and first
It is provided with anticollision gap 13 between end cap 2.
Referring to Fig. 1～3, described backpressure device is located in fairlead 1, and its concrete scheme is as follows：
Referring to Fig. 1～5, described backpressure device is only used as hanging of steel wire rope break-in element by three precompressed steel wire ropes 9, three
10, one block of floating back-pressure steel plate 11 of ring screw, another three lifting bolts 10 of fixing precompressed steel wire rope 9 and a steel wire rope self-locking
Tensioning anchorage 15 forms.Wherein,
Described floating back-pressure steel plate 11 is located between cylindrical helical compression spring 4 and the second end cap 3；
The lifting bolt 10 that described three are only used as steel wire rope break-in element is fixed around the axisymmetrical of described fairlead 1
On the dynamic pressure plate 7 of described drive member.
Referring to Fig. 6～10, each steel wire rope self-locking tensioning anchorage 15 is by the first self-centering locking fixture, the second self-centering lock
Clamper, anti-torsion compression spring 15-1 and plane bearing 15-2 composition, wherein：
The first described self-centering locking fixture has a connecting seat 15-3, and the edge of this connecting seat 15-3 is provided with installing hole
15-12, the middle part of lower end is provided with axially extended cylindrical boss 15-4, and the internal of this boss 15-4 is provided with first along axial line
Taper hole 15-5, is provided with the first taper jaw 15-7 being made up of 3 claw pieces in this taper hole, the outer peripheral face of described boss 15-4 is sheathed
There is tensioning swivel nut 15-6, threaded therebetween；Wherein, the microcephaly of described first tapered clamp 15-7 points to connecting seat 15-3,
The outer peripheral face of described tensioning swivel nut 15-6 is regular hexagon；
The second described self-centering locking fixture has a tapered sleeve 15-8, internal being sequentially provided with along axis of this tapered sleeve 15-8
One section of second taper hole 15-13 and one section of screwed hole；Wherein, it is provided with, in the second taper hole 15-13, the second taper being made up of 3 claw pieces
Jaw 15-9, described screw thread in the hole is provided with hollow bolt 15-10, the head of hollow bolt 15-10 and the second taper jaw 15-
Relatively, the outer peripheral face of described tapered sleeve 15-8 is regular hexagon to 9 major part；
Described plane bearing 15-2 by ball retainer assembly 15-11 and is respectively provided at tensioning swivel nut 15-6 and tapered sleeve
Ring raceway on the relative end face of 15-8 is constituted, in wherein said ring raceway and ball retainer assembly 15-11
Ball matches；
Described second self-centering locking fixture is located at the outside of tensioning swivel nut 15-6 head, and the second taper jaw 15-9
Microcephaly is consistent with the sensing of the first taper jaw 15-7 microcephaly；Described plane bearing 15-2 be located at described tensioning swivel nut 15-6 with
Between tapered sleeve 15-8, described anti-torsion compression spring 15-1 is located in the endoporus of tensioning swivel nut 15-6.When precompressed steel wire rope 9 is by
Centre bore through anti-torsion compression spring 15-1 and plane bearing 15-2 and the second taper between the calvus of one taper jaw 15-7
After passing between the calvus of jaw 15-9, under precompressed steel wire rope 9 tension force effect, a described anti-work turning round compression spring 15-1
On the first taper jaw 15-7, other end acts on tapered sleeve 15-8.
Referring to Fig. 1 and Fig. 5, the connecting seat 15-3 of described steel wire rope self-locking tensioning anchorage 15 is fixed on the second end cap by screw
The lower surface at the middle part of 3 protuberances, and the distance of lower surface distance the second end cap 3 bottom surface at middle part of described second end cap 3 protuberance
Height more than described steel wire rope self-locking tensioning anchorage 15.
Referring to Fig. 1～5, on described floating back-pressure steel plate 11, the axisymmetrical around fairlead 1 is provided with three lifting bolts 10；
The outside of described second end cap 3, the position passed through in the axis of fairlead 1 is provided with described steel wire rope self-locking tensioning anchorage 15；Three
Root precompressed steel wire rope 9 is distributed in cylindrical helical compression spring 4 center in the hole with broken line state, and each precompressed steel wire rope 9
One be to connect to be fixed on set lifting bolt 10 on floating back-pressure steel plate 11, other end passed around relative one as steel
Turn back after the lifting bolt 10 of cord break-in element, then three precompressed steel wire ropes 9 are listed as rope bundle from floating back-pressure steel plate 11
The position that the axis of upper fairlead 1 passes through passes through floating back-pressure steel plate 11, is anchored in second by steel wire rope self-locking tensioning anchorage 15
On end cap 3；On described floating back-pressure steel plate 11, it is provided through the through hole 12 of precompressed steel wire rope 9 through position in described rope bundle,
The aperture of this through hole 12 is more than the diameter of described rope bundle；On the second described end cap 3, it is provided with anchoring in described rope bundle through position
The anchor hole 3-1 of rope bundle.
Referring to Fig. 1～5 and with reference to Fig. 6～10, in order to realize the purpose of predeterminable initial stiffness, above-mentioned three pre- steel wires
The installation of rope 9 and tensioning method are as described below：(1) first according to the default initial stiffness of antivibrator and cylindrical helical compression spring
4 characterisitic parameter, calculates the tension force that precompressed steel wire rope 9 meets antivibrator initial stiffness；(2) press Fig. 1 by described antivibrator group
Install, make the rope that the other end of three precompressed steel wire ropes 9 forms side by side restraint the first taper from steel wire rope self-locking tensioning anchorage 15
Pass in jaw 15-7, the centre bore of the second taper jaw 15-9 and hollow bolt 15-10；Then, (3) are the pre- compressed steel exposing
The fag end system of cord 9 is connected on traction stretching machine, and monitors precompressed steel wire rope 9 using tension detecting instrument while drawing tensioning
Tension force；When described precompressed steel wire rope 9 is tensioned to tension force needed for default initial stiffness, move forward the second self-centering locking folder
Tool, adjusts simultaneously and turns tensioning swivel nut 15-6 so that plane bearing 15-2 is clamped tightly at described tensioning swivel nut 15-6 and tapered sleeve
Between 15-8, and anti-torsion compression spring 15-1 is compressed, and tension force produced by it promotes the first taper jaw 15-7 reach by advance
Compressed steel cord 9 clamps, turn thereafter described hollow bolt 15-10 will in the second taper jaw 15-9 precompressed steel wire rope 9
Folder is dead；Finally, remove traction stretching machine, block unnecessary precompressed steel wire rope 9, you can by cylindrical helical compression spring 4 all the time
It is clamped between dynamic pressure plate 7 and floating back-pressure steel plate 11.
Referring to Fig. 1 and Fig. 6～10, in the work progress installing antivibrator or in routine maintenance procedure, if it find that in advance
The tension force of compressed steel cord 9 is not enough, you can the tensioning swivel nut 15-6 turning in steel wire rope self-locking tensioning anchorage 15 is adjusted.
Referring to Fig. 1～3, because antivibrator described in this example is vertical earthquake isolating equipment, therefore in tensioning precompressed steel wire rope 9 then
Make the tension force sum of three precompressed steel wire ropes 9 be more than or equal to the undertaken dead load of this antivibrator, so can ensure described resistance
The bidirectional elastic deformation of Buddhist nun's device is symmetrical.
Under ideal conditions, the vertical ripple of earthquake should be unable to be occurred to building during building transmission by earthquake isolating equipment
Displacement.Based on this, the operation principle of the earthquake isolating equipment of Antiseismic building described in this example is as follows：Referring to Fig. 1, when the vertical ripple of earthquake
When produced dynamic loading overcomes the initial stiffness of antivibrator, if this dynamic loading above pushes away the second end along the axis of fairlead 1
Lid 3, the counteracting force of dynamic pressure plate 7 just compresses downwards cylindrical helical compression spring 4, and the second end cap 3 is built with moving on ground
Thing is motionless；If this dynamic loading is along drop-down second end cap 3 of axis of fairlead 1, precompressed steel wire rope 9 is then become by being used as steel wire rope
Reversely sling floating back-pressure steel plate 11 to the lifting bolt 10 of element, compress cylindrical helical compression spring 4, the second end cap upwards
3 move down with ground, but building is still motionless.As can be seen here, when P wave makes ground all compressible when there is up-down vibration
Cylindrical helical compression spring produces elastic deformation and consumes energy.
Example 2
Referring to Figure 11～14, the antivibrator described in this example is also a kind of vertical earthquake isolating equipment for Antiseismic building, and
It has been substantially carried out some improvement following on the basis of example 1：(1) precompressed steel wire rope 9 is increased to the six roots of sensation by three；(2) using as
The lifting bolt 10 of steel wire rope break-in element replaces with U-shaped component 16；(3) described backpressure device is changed accordingly to：
Described backpressure device by the precompressed steel wire rope 9, six of the six roots of sensation be only used as the U-shaped component 16 of steel wire rope break-in element,
The lifting bolt 10 of 11, six fixing 9 one, precompressed steel wire ropes of one block of floating back-pressure steel plate and a fixing precompressed steel wire rope 9 are another
The steel wire rope self-locking tensioning anchorage 15 of one forms；Wherein,
Floating back-pressure steel plate 11 is located between cylindrical helical compression spring 4 and the second end cap 3；
The six U-shaped components 16 being only used as steel wire rope break-in element fix described drive around the axisymmetrical of described fairlead 1
The lower surface of described cylindrical helical compression spring 4 center in the hole is located on the dynamic pressure plate 7 of dynamic component；Referring to Figure 14, described U
Shape component 16 is made up of round steel bending, on the dynamic pressure plate 7 of described drive member, is provided with the relevant position of setting U-shaped component 16
The circular hole matching with 16 two sides of U-shaped component, described U-shaped component 16 is inserted in this circular hole, and the two is welded and fixed together；
On described floating back-pressure steel plate 11, the axisymmetrical around fairlead 1 is provided with six lifting bolts 10；Described second end
The outside of lid 3, the position passed through in the axis of fairlead 1 is provided with described steel wire rope self-locking tensioning anchorage 15；The pre- steel wire of the six roots of sensation
Rope 9 is distributed in cylindrical helical compression spring 4 center in the hole with broken line state, and of each precompressed steel wire rope 9 is to connect
It is fixed on set lifting bolt 10 on floating back-pressure steel plate 11, other end passed around relative one as steel wire rope break-in unit
Turn back after the U-shaped component 16 of part, then six roots of sensation precompressed steel wire rope 9 is listed as rope bundle fairlead 1 from floating back-pressure steel plate 11
The position that axis passes through passes through floating back-pressure steel plate 11, is anchored on the second end cap 3 by steel wire rope self-locking tensioning anchorage 15；Described
Floating back-pressure steel plate 11 on, be provided through the through hole 12 of precompressed steel wire rope 9, the hole of this through hole 12 through position in described rope bundle
Footpath is more than the diameter of described rope bundle；On the second described end cap 3, it is provided with the anchor hole of anchoring rope bundle through position in described rope bundle
3-1.
This example other other than the above implementation is same as Example 1.
The operation principle being used for the earthquake isolating equipment of Antiseismic building described in this example is same as Example 1, and the public can refer to example 1 voluntarily
Analysis.
Example 3
Referring to Figure 15～17, this example is a kind of antivibrator for building structure aseismatic reinforcing, and this antivibrator includes guiding
Set 1, two of this fairlead 1 is respectively fixed with the first end cap 2 and the second end cap 3, and inside is provided with cylindrical helical compression spring
4, a drive member is put in described fairlead 1 by the first end cap 2 center of fairlead one and is pressed in described cylindrical helical
In compression spring 4；Wherein said drive member is made up of with the drive rod 17 that is connected with it dynamic pressure plate 7, described driving
The end of bar 17 is provided with hinge hole 18.
Referring to Figure 15, outside described second end cap 3 along fairlead 1 axisymmetrical be provided with parallel with two that it is connected
Otic placode 19, the end of this otic placode 19 also is provided with hinge hole 18.
Referring to Figure 15～19, in described fairlead 1, be provided with backpressure device, this backpressure device by three precompressed steel wire ropes 9,
Three fixing 9 one, the precompressed steel wire ropes of 20, one block of floating back-pressure steel plate of fixed pulley 11, three being only used as steel wire rope break-in element
The steel wire rope self-locking tensioning anchorage 15 of lifting bolt 10 and fixing precompressed steel wire rope 9 other end forms.Wherein,
Floating back-pressure steel plate 11 is located between cylindrical helical compression spring 4 and the second end cap 3；
Three fixed pulleys 20 being only used as steel wire rope break-in element fix described driving around the axisymmetrical of described fairlead 1
The lower surface of described cylindrical helical compression spring 4 center in the hole is located on the dynamic pressure plate 7 of component；Wherein, described fixed pulley
20 are hinged on support, and this support is welded on the dynamic pressure plate 7 of drive member；
On described floating back-pressure steel plate 11, the axisymmetrical around fairlead 1 is provided with three lifting bolts 10；Described second end
The outside of lid 3, the position passed through in the axis of fairlead 1 is provided with described steel wire rope self-locking tensioning anchorage 15；Three pre- steel wires
Rope 9 is distributed in cylindrical helical compression spring 4 center in the hole with broken line state, and of each precompressed steel wire rope 9 is to connect
It is fixed on set lifting bolt 10 on floating back-pressure steel plate 11, other end passed around relative one as steel wire rope break-in unit
Turn back after the fixed pulley 20 of part, then three precompressed steel wire ropes 9 are listed as the axle of bundle fairlead 1 from floating back-pressure steel plate 11 of restricting
The position that line passes through passes through floating back-pressure steel plate 11, is anchored on the second end cap 3 by steel wire rope self-locking tensioning anchorage 15；Described
On floating back-pressure steel plate 11, it is provided through the through hole 12 of precompressed steel wire rope 9, the aperture of this through hole 12 through position in described rope bundle
Diameter more than described rope bundle；On the second described end cap 3, it is provided with the anchor hole 3- of anchoring rope bundle through position in described rope bundle
1..
Steel wire rope self-locking tensioning anchorage 15 in such scheme is identical with example 1, and the public can refer to example 1 and implements.
Referring to Figure 15, the operation principle of the antivibrator reinforced for building structure aseismatic described in this example is as follows：Set when being more than
The dynamic loading of meter dead load along the axis of fairlead 1 relatively act on drive rod 17 and otic placode 19 when, described dynamic pressure plate 7 to
Lower compression cylindrical helical compression spring 4, hinge hole 18 relative movement on drive rod 17 and otic placode 19；When more than design dead load
Dynamic loading along the axis of fairlead 1 act on opposite to each other on drive rod 17 and otic placode 19 when, precompressed steel wire rope 9 passes through fixed pulley 20
Floating back-pressure steel plate 11 of reversely slinging compresses cylindrical helical compression spring 4, and on drive rod 17 and otic placode 19, hinge hole 18 is reverse
Mobile (now, cylindrical helical compression spring 4 still also in pressured state).As can be seen here, axial dynamic loading no matter phase
To still acting on opposite to each other on initial stiffness adjustable back pressure type coiled spring damper, cylindrical helical compression bullet can be compressed
So as to there is elastic deformation and consuming energy in spring 4.
Claims (4)
1. the adjustable back pressure type coiled spring damper of a kind of initial stiffness, this antivibrator includes fairlead, and the one of this fairlead
Head is provided with the first end cap, and other end is provided with the second end cap, and inside is coaxially provided with cylindrical helical compression spring；One drive member by
First end cap central puts in fairlead and acts on described cylindrical helical compression spring；It is characterized in that,
It is additionally provided with backpressure device, this backpressure device includes the precompressed steel wire rope of more than three and pre- compressed steel in described fairlead
The equal steel wire rope break-in element of cord quantity, a steel wire rope self-locking tensioning anchorage and one block of floating back-pressure steel plate, wherein,
Described floating back-pressure steel plate is located between cylindrical helical compression spring and the second end cap；
Described steel wire rope break-in element is fixed in described drive member around the axisymmetrical of described fairlead；
Described steel wire rope self-locking tensioning anchorage is 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, and the middle part of this connecting seat one end is provided with axially extended cylinder
Shape boss, the internal of this boss is provided with, along axial line, the first taper jaw being made up of 3～5 claw pieces, and outer peripheral face is arranged with to be opened
Tight swivel nut；Wherein, the microcephaly of described first tapered clamp points to connecting seat, and the outer peripheral face of described tensioning swivel nut is regular hexagon；
B the second self-centering locking fixture described in) has a tapered sleeve, and the internal of this tapered sleeve is sequentially provided with by 3～5 claws along axis
Second taper jaw of piece composition and hollow bolt, wherein, the major part of the described head of hollow bolt and the second taper jaw
Relatively, the outer peripheral face of described tapered sleeve is regular hexagon；
C the plane bearing described in) is by the ball retainer assembly end face relative with tapered sleeve with being respectively provided at tensioning swivel nut
Ring raceway is constituted, and wherein said ring raceway is matched with the ball in ball retainer assembly；
D) described second self-centering locking fixture is located at the outside of described tensioning swivel nut head, and the second taper jaw microcephaly and the
The sensing of one taper jaw microcephaly is consistent；Described plane bearing is located between described tensioning swivel nut and tapered sleeve, described anti-torsion
Compression spring is located in the endoporus of tensioning swivel nut；Turn round compression bullet through anti-between precompressed steel wire rope is by the calvus of the first taper jaw
After passing between the calvus of the centre bore of spring and plane bearing and the second taper jaw, under the effect of precompressed steel wire rope tension,
Described anti-turn round compression spring one acts on the first taper jaw, and other end acts on tapered sleeve；
Described precompressed steel wire rope is distributed in the center in the hole of cylindrical helical compression spring with broken line state, and each precompressed
One axisymmetrical around described fairlead of steel wire rope is fixed on floating back-pressure steel plate, and other end passed around relative one
Turn back after individual steel wire rope break-in element, then all of precompressed steel wire rope is listed as rope bundle, fairlead from floating back-pressure steel plate
The point that axis passes through, through floating back-pressure steel plate, is fixed on the second end cap by steel wire rope self-locking tensioning anchorage；Described floating
On back-pressure steel plate, described rope bundle through position be provided through the through hole of described rope bundle, the aperture of this through hole is more than described rope
The diameter of bundle；
By precompressed steel wire tensioning to arranging tension force needed for initial stiffness, described cylindrical helical compression spring is made to clamp all the time
Between drive member and floating back-pressure steel plate.
2. a kind of adjustable back pressure type coiled spring damper of initial stiffness according to claim 1 was it is characterised in that should
Back pressure type coiled spring damper is the antivibrator reinforced for building structure aseismatic.
3. a kind of adjustable back pressure type coiled spring damper of initial stiffness according to claim 1 was it is characterised in that should
Back pressure type coiled spring damper is the vertical earthquake isolating equipment for Antiseismic building.
4. a kind of initial stiffness adjustable back pressure type coiled spring damper according to claim 1,2 or 3, its feature exists
In described steel wire rope break-in element is fixed pulley, lifting bolt or U-shaped component.
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| CN201610903683.0A CN106382321B (en) | 2016-10-17 | 2016-10-17 | A kind of adjustable back pressure type coiled spring damper of initial stiffness |
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| CN114992263A (en) * | 2022-06-23 | 2022-09-02 | 周泽敏 | Special-shaped spring with auxiliary spring layer |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106382321B (en) | 2019-09-03 |
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