CN106400999A - Back pressure type helical compression spring damper - Google Patents
Back pressure type helical compression spring damper Download PDFInfo
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- CN106400999A CN106400999A CN201610905713.1A CN201610905713A CN106400999A CN 106400999 A CN106400999 A CN 106400999A CN 201610905713 A CN201610905713 A CN 201610905713A CN 106400999 A CN106400999 A CN 106400999A
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- steel wire
- compression spring
- wire rope
- hole
- fairlead
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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
Abstract
The invention relates to a back pressure type helical compression spring damper. The back pressure type helical compression spring damper is characterized in that a back pressure device is further arranged in a guide sleeve, the back pressure device comprises more than three prepressing steel wire ropes, steel wire rope turning elements and a floating back pressure steel plate, wherein the number of the steel wire rope turning elements is equal to that of the prepressing steel wire ropes, the prepressing steel wire ropes are arranged in a center hole of a cylindrical helical compression spring in the state of broken lines, one end of each prepressing steel wire rope is symmetrically fixed to the floating back pressure steel plate around the axis of the guide sleeve, the other end of each prepressing steel wire rope bypasses one opposite steel wire rope turning element and then turns back, then all of the prepressing steel wire ropes are arranged in parallel so as to form a rope beam and pass through the floating back pressure steel plate so as to be fixed to a second end cover from a point, through which the axis of the guide sleeve passes, in the floating back pressure steel plate, and the prepressing steel wire ropes are tensioned to tension required by preset initial rigidity, so that the cylindrical helical compression spring is clamped between a driving member 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 the damping unit of helical spring.
Background technology
Damper is to provide the resistance of motion, the device of depletion kinergety.After nineteen seventies, damping
Device is progressively converted to the Structural Engineerings such as building, bridge, railway from space flight, aviation, military project, firearms, automobile and other industries.Spiral bullet
The spring variation rigidity characteristic linear with deformation due to having load, is therefore widely used in the devices such as shock insulation, damping.Spiral shell
Rotation spring is pressed using method and is classified, and mainly has extension spring, stage clip, wherein application in damper for the cylindrical helical compression spring
Generally.But, a specific cylindrical helical compression spring, can only operate in compressive state in effective working range.
Therefore, be currently used for wind resistance and earthquake-resistant damper at least will use two cylindrical helical compression springs, or with other
The damper (as viscoelastic damper) of type is combined.But, this using many cylindrical helical compression springs or and its
The method that the damper of its type is combined can produce much negative problem, such as：1st, the stretching of damper and the damping of compression are special
Property asymmetric, impact shock insulation, damping effect；2nd, volume is big, cannot install in small space；3rd, complex structure, produces difficult, becomes
This height；Etc..
Authorization Notice No. is that the utility application of CN 204081122U discloses a kind of wind resistance damping bullet for building
Spring damper, two elastomers (i.e. two cylindrical helical springs) that this damper is directed in set are distinguished on center shaft
On middle limiter assembly, when damper is tension or in compression, one of elastomer tension, another elastomer is pressurized, thus real
Existing wind resistance damping.But, this utility model patent is clearly present following shortcomings：1st, two cylindrical helical springs are needed, entirely
The length of damper is longer, is not suitable for apart from less space mounting；2nd, cannot be even it cannot guarantee that two in technique
The rigidity (including tensible rigidity and compression stiffness) of spring is equal, and therefore wind direction difference damping effect is difference；3rd, cannot change
The rigidity of damper, reaches default wind resistance rank, reduces the purpose of damping cost；4th, a cylindrical helical spring is drawing simultaneously
Stretch and work under two states with compressing, the metal material of existing spring and production technology are difficult to meet and require, can only be by reducing
The regime of elastic deformation of cylindrical helical spring come to realize stretching with compression two kinds of working conditions, this obviously can cause resource wave
Take.
Additionally, in antiseismic engineering, the initial stiffness of damper 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 damper, 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 shock absorber 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 damper 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 back pressure type spiral compression spring damper, and this damper is not
Only maintain effective active length of spiral compression spring, and both compressible passive energy dissipations, and stretchable passive energy dissipation.
The present invention solve above-mentioned technical problem technical scheme be：
A kind of back pressure type spiral compression spring damper, this damper includes fairlead, and one of this fairlead is provided with
One end cap, other end is provided with the second end cap, and inside is coaxially provided with cylindrical helical compression spring；One drive member is by the first end cap
Center 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- in described fairlead
The equal steel wire rope break-in element of compressed steel cord quantity 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 in the fixing described drive member of axisymmetrical of described fairlead；
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 from floating back-pressure steel plate guide
The point that set axis passes through is through floating back-pressure Interal fixation on described second end cap；
On described floating back-pressure steel plate, described rope bundle through position be provided through described rope bundle through hole, this lead to
The aperture in hole is more than the diameter of described rope bundle；
By precompressed steel wire tensioning to tension force needed for default 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 spiral compression spring damper is as follows：When dynamic loading acts on relatively along the axis of fairlead
When, described drive member compresses downwards cylindrical helical compression spring；When dynamic loading acts on opposite to each other along the axis of fairlead,
Precompressed steel wire rope is reversely sling floating back-pressure steel plate compression cylindrical helical compression spring by steel wire rope break-in element.Thus may be used
See, no matter axial dynamic loading acts on spiral compression spring damper relatively or opposite to each other, can compress cylindrical helical pressure
So as to there is elastic deformation and consuming energy in contracting spring.
From above-mentioned operation principle, logical on the precompressed steel wire rope described in the course of work 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..
Back pressure type spiral compression spring damper of the present invention, wherein said precompressed steel wire rope two can be using weldering
Connect fixation, similar lifting bolt system may also be employed and connect fixation, but, if two all connects fixation using welding or lifting bolt system
Extremely, then the purpose of default initial stiffness will be reached, it is necessary for precalculating and strictly control the length of described precompressed steel wire rope
The default tension force of ability, and then reach the purpose of default initial stiffness.But, in actual production debugging process, be using control
The method making described precompressed rope capacity reaches the purpose of default initial stiffness and then there are following two hang-ups, one be welding or
Be that the process that connects can produce error, even if two are to control welding or are the produced error of the process connecing, but steel wire rope cutting off,
The change of its characterisitic parameter is also resulted in placement process.In order to solve above-mentioned technical barrier, an improvement project of the present invention
It is：
Described rope bundle is fixed on the second end cap by steel wire rope self-locking anchorage；Described steel wire rope self-locking anchorage is by installing
Hole, jaw and check bolt are constituted, wherein,
Described installing hole is located on the second end cap；Described installing hole is made up of one section of taper hole and one section of screwed hole, its
Described in taper hole be located at fairlead in side, and tip point to described fairlead in, described screwed hole be located at fairlead outside
Side；
Described jaw is to match cone with described taper hole, and is made up of 3-5 lobe, and it is provided with clamping along axis in vivo
The clamping hole of precompressed steel wire rope；
Described check bolt is matched with described screwed hole, and is provided with diameter greater than precompressed steel wire rope simultaneously along axis in vivo
The circular hole of the rope beam diameter of row composition；
Described jaw is arranged in described taper hole, and check bolt is arranged on described screw thread in the hole.
From above-mentioned improvement project, one of precompressed steel wire rope is fixed in floating counter, arranged side by side group of other end
Become rope bundle to be passed by the clamping hole of described steel wire rope self-locking anchorage and circular hole, so the fag end system exposed can be connected on and lead
Draw on stretching machine, while drawing tensioning, tension force is monitored using tension detecting instrument.When described precompressed steel wire tensioning is extremely default
Needed for initial stiffness during tension force, turn check bolt and described jaw can be promoted to clamp and locked precompressed steel wire rope, even if in advance
Compressed steel cord also will not loosen in the vibration processes of tensioning repeatedly → lax → tensioning → lax.
Spiral compression spring damper of the present invention, can be widely used for machinery and building field, e.g., in plant equipment
The isolation of portion's vibration, Equipment Foundations shock insulation, the seismic hardening of building structure, antidetonation of heavy construction etc..
The spiral compression spring damper of the adjustable initial stiffness of the present invention has the effect 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
Can produce elastic compression deformation and consume energy, overcome conventional helical compression spring damper can only compression power consumption shortcoming；
(2) after dynamic loading is more than the defensive ability/resistance ability that initial stiffness preset by damper, spiral compression spring of the present invention
The deformation of damper bidirectional elastic is symmetrical, does not therefore affect the effect of its compression power consumption because of the change of the positive negative direction of external applied load
Really, it is that the Design of Reinforcement such as building 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 damper, therefore used building
Vertical earthquake isolating when, predeterminable earthquake intensity, significantly reduce shock insulation cost；
(4) only may be implemented in two kinds of working conditions of stretching and compression with a cylindrical helical spring, significantly shorten
The length of damper.
(5) length presetting described precompressed steel wire rope is predeterminable damper initial stiffness, and described cylindrical helical
Compression spring does not have a circle to lose efficacy, and that is, effectively active length is constant, will not change the original characteristic of cylindrical helical compression spring
Parameter.
Brief description
Fig. 1～5 are the structural representation of a specific embodiment of spiral compression spring damper of the present invention, its
In, Fig. 1 is that front view (cut open, and for ease of expression, in figure is by the lifting bolt 10 at the second end cap 3 center by Fig. 3 C C rotation
The annulus in portion completely draws), 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. 6～11 are the structural representation of second specific embodiment of spiral compression spring damper of the present invention,
Wherein, Fig. 6 is front view (partly cuing open), and Fig. 7 is the D D sectional view (omitting precompressed steel wire rope) of Fig. 6, and Fig. 8 is that the E E of Fig. 6 cuts open
View (omits precompressed steel wire rope), and Fig. 9 is the F F cutaway view Amplified image of Fig. 7, and Figure 10 is the schematic enlarged-scale view of Fig. 6 local III, figure
11 is the G G cutaway view Amplified image of Figure 10.
Figure 12～16 be spiral compression spring damper of the present invention the 3rd specific embodiment structural representation
Figure, wherein, Figure 12 is front view (Figure 14 J J rotation is cutd open), and Figure 13 is the H H sectional view (omitting precompressed steel wire rope) of Figure 12,
Figure 14 is the I I sectional view (omitting precompressed steel wire rope) of Figure 12, and Figure 15 is the schematic enlarged-scale view of Figure 12 local IV, and Figure 16 is figure
The schematic enlarged-scale view of 12 local V.
Specific embodiment
Example 1
Referring to Fig. 1～5, the damper 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 second described end cap 3 is discoid, the edge of surrounding
It is provided with installing hole 6, described fairlead 1 passes through the middle part on ring flange 5 surface fixed thereon set by lower end.
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 located in fairlead 1, the dynamic pressure plate 7 in drive member
Effect end face thereon.
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
Another four lifting bolts 10 of 10, one block of floating back-pressure steel plate 11 of ring screw and fixing precompressed steel wire rope 9 form.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；
On described floating back-pressure steel plate 11, the axisymmetrical around fairlead 1 is provided with three lifting bolts 10, described second end
The position passed through in fairlead 1 axis on lid 3 is additionally provided with a lifting bolt 10；Three precompressed steel wire ropes 9 are all with broken line state
It is located at the center in the hole of cylindrical helical compression spring 4, and of each precompressed steel wire rope 9 is to connect to be fixed on floating back-pressure
On steel plate 11 upper lift ring screw 10, other end passed around relative one and rolled over as after the lifting bolt 10 of steel wire rope break-in element
Return, then the fag end of three precompressed steel wire ropes 9 be listed as restrict bundle from floating back-pressure steel plate 11 fairlead 1 axis pass through bring out into the open
Crossing floating back-pressure steel plate 11 is to connect to be fixed on set lifting bolt 10 on the second end cap 3；On described floating back-pressure steel plate 11,
Described rope bundle through position be provided through the through hole 12 of described rope bundle, the aperture of this through hole 12 is more than the straight of described rope bundle
Footpath.
Referring to Fig. 1～3, in order to realize the purpose of predeterminable initial stiffness, the installation of above-mentioned three precompressed steel wire ropes 9 and
Clamping method is as described below：(1) first true according to the coefficient of elasticity of the default initial stiffness of damper and cylindrical helical compression spring 4
Determine cylindrical helical compression spring 4 decrement, and then calculate each precompressed steel wire rope 9 and meet damper initial stiffness and wanted
The length asked；(2) by Fig. 1～3, the dynamic pressure plate 7 of cylindrical helical compression spring 4, described backpressure device and drive member is connected
After good, first compress cylindrical helical compression spring 4, expose three lifting bolts 10 and the second end cap on floating back-pressure steel plate 11
On 3 through hole 12, more repeatedly adjust, make the physical length of each precompressed steel wire rope 9 equal with computational length, then side by side
For rope bundle, system is connected on the lifting bolt 10 on the second end cap 3, and fixing dead with common rope cramp (in figure there is not display), will
Cylindrical helical compression spring 4 is clamped between the dynamic pressure plate 7 of described drive member and floating back-pressure steel plate 11 all the time；(3) will
The part that step (2) assembles is put in fairlead 1, and is directed to cover 1 and is fixed together with the second end cap 3, finally by upper company
Fishplate bar 8 is fixed together with dynamic pressure plate 7, obtains final product described back pressure type coiled spring damper.
Referring to Fig. 1～3, because damper 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 equal to the undertaken dead load of this damper, so can ensure described damper
Bidirectional elastic deformation symmetrical.
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 vibration processes
Described in produce between the dynamic pressure plate 7 of drive member and the first end cap 2 and clash into, be provided between described dynamic pressure plate 7 and the first end cap 2
Anticollision gap 13.
Under ideal conditions, the vertical ripple of earthquake passes through earthquake isolating equipment to during building transmission, and 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 Fig. 1, vertical when earthquake
When dynamic loading produced by ripple overcomes the initial stiffness of damper, if this dynamic loading above pushes away second along the axis of fairlead 1
End cap 3, the reaction force of dynamic pressure plate 5 just compresses downwards cylindrical helical compression spring 4, and the second end cap 3 is built with moving on ground
Build thing motionless；If, along drop-down second end cap 3 of axis of fairlead 1, precompressed steel wire rope 9 is then by being used as steel wire rope for this dynamic loading
The lifting bolt 10 of break-in element is reversely sling floating back-pressure steel plate 11, compresses cylindrical helical compression spring 4, the second end upwards
Lid 3 moves down with ground, but still building is motionless.As can be seen here, when P wave makes ground all can press when there is up-down vibration
Contracting cylindrical helical compression spring produces elastic deformation and consumes energy.
Example 2
Referring to Fig. 6～11, the damper 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) will be used as steel
The lifting bolt 10 of cord break-in element replaces with U-shaped component 15；(3) by the lifting bolt of fixing precompressed steel wire rope 9 other end
10 replace with steel wire rope self-locking anchorage 16；(4) middle part of the second end cap 3 is thickened and protuberance forms inverted washbowl shape upwards,
In order to install steel wire rope self-locking anchorage 16；(5) 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 15 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 anchorage 16 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 15 being only used as steel wire rope break-in element fix described drive around the axisymmetrical of described fairlead 1
On the dynamic pressure plate 7 of dynamic component；Referring to Fig. 9, described U-shaped component 15 is made up of round steel bending, the dynamic pressure plate 7 of described drive member
On, it is provided with the circular hole matching with 15 two sides of U-shaped component, described U-shaped component 15 in the relevant position of setting U-shaped component 15
It is inserted in this circular hole, the two is welded and fixed together；
On described floating back-pressure steel plate 11, the axisymmetrical around fairlead 1 is provided with land lifting bolt 10, described second end
The position passed through in fairlead 1 axis on lid 3 is provided with a steel wire rope self-locking anchorage 16；Land root precompressed steel wire rope 9 is all with broken line
State is located at the center in the hole of cylindrical helical compression spring 4, and of each precompressed steel wire rope 9 is to connect to be fixed on floating
On set lifting bolt 10 on back-pressure steel plate 11, other end passed around relative one as the U-shaped structure of steel wire rope break-in element
Turn back after part 15, then the fag end of land root precompressed steel wire rope 9 is listed as rope bundle fairlead 1 axis warp from floating back-pressure steel plate 11
The point crossed, through floating back-pressure steel plate 11, is fixed on the second end cap 3 by steel wire rope self-locking anchorage 16；Described floating back-pressure steel
On plate 11, described rope bundle through position be provided through the through hole 12 of described rope bundle, the aperture of this through hole 12 is more than described rope
The diameter of bundle.
Referring to Figure 10 and Figure 11, in above-mentioned backpressure device, described steel wire rope self-locking anchorage 16 is by installing hole 16-1, jaw
16-2 and check bolt 16-3 is constituted, and wherein, described installing hole 16-1 is located on the second end cap 3；Described installing hole 16-1
It is made up of one section of taper hole and one section of screwed hole, the side that wherein said taper hole is located in fairlead 1, and tip points to described guiding
In set 1, described screwed hole is located at the side outside fairlead 1；Described jaw 16-2 is to match cone with described taper hole, and
It is made up of 3 lobes, it is provided with, along axis, the clamping hole that clamping precompressed steel wire rope 9 becomes rope bundle side by side in vivo；Described check bolt 16-
3 are matched with described screwed hole, and the internal circular hole being provided with along axis with diameter greater than described rope beam diameter；Described jaw 16-2
It is arranged in described taper hole, check bolt 16-3 is arranged on described screw thread in the hole.
By Fig. 6～11, the dynamic pressure plate 7 of cylindrical helical compression spring 4, described backpressure device and drive member is connected
Afterwards, first compress cylindrical helical compression spring 4, expose six lifting bolts 10 on floating back-pressure steel plate 11 and the second end cap 3
On through hole 12, then, the other end of precompressed steel wire rope 9 is become rope bundle side by side and the clamping hole from jaw 16-2 body and locking
Pass in the circular hole of bolt 16-3.Then the fag end system of the precompressed steel wire rope 9 exposing is connected on traction stretching machine, and in traction
Tension detecting instrument is adopted to monitor the tension force of precompressed steel wire rope 9 while tensioning.Preset initially when described precompressed steel wire rope 9 is tensioned to
Needed for rigidity during tension force, turn the rope that check bolt 16-3 can promote described jaw 16-2 to form precompressed steel wire rope 9 side by side
Bundle clamping is simultaneously locked, thus cylindrical helical compression spring 4 is clamped between floating back-pressure steel plate 11 and dynamic pressure plate 7 all the time.
Finally, the part assembling is put in fairlead 1, and be directed to cover 1 and be fixed together with the second end cap 3, then by upper connection
Plate 8 is fixed together with dynamic pressure plate 7, obtains final product described back pressure type coiled spring damper.
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 12～14, this example is a kind of damper for building structure aseismatic reinforcing, and this damper 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 first drive rod 17 of being connected with it dynamic pressure plate 7, described
The end of the first drive rod 17 is provided with hinge hole 18.
Referring to Figure 12, 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 12～16, 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 anchorage 16 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
On the dynamic pressure plate 7 of component；Wherein, described fixed pulley 20 is hinged on support, and this support is welded on the dynamic pressure plate 7 of drive member
On；
On described floating back-pressure steel plate 11, the axisymmetrical around fairlead 1 is provided with three lifting bolts 10, described second end
The position passed through in fairlead 1 axis on lid 3 is provided with a steel wire rope self-locking anchorage 16；Three precompressed steel wire ropes 9 are all with broken line
State is located at the center in the hole of cylindrical helical compression spring 4, and of each precompressed steel wire rope 9 is to connect to be fixed on floating
On set lifting bolt 10 on back-pressure steel plate 11, other end passed around the fixed pulley that relative one is only used as steel wire rope break-in element
Turn back after 20, then the fag end of three precompressed steel wire ropes 9 is listed as rope bundle fairlead 1 axis process from floating back-pressure steel plate 11
Point through floating back-pressure steel plate 11, be fixed on the second end cap 3 by steel wire rope self-locking anchorage 16；Described floating back-pressure steel plate
On 11, described rope bundle through position be provided through the through hole 12 of described rope bundle, the aperture of this through hole 12 is more than described rope bundle
Diameter.
Steel wire rope self-locking anchorage 16 in such scheme is identical with example 2, described damper assemble method also with example 2 class
Seemingly, the public can refer to example 2 and implements.
Referring to Figure 12, the operation principle of the damper 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 the first drive rod 17 and the second drive rod 19 when, described
Dynamic pressure plate 7 compress downwards cylindrical helical compression spring 4, the first drive rod 17 is relative with hinge hole 18 on the second drive rod 19
Mobile；When the dynamic loading more than design dead load acts on the first drive rod 17 and the second driving opposite to each other along the axis of fairlead 1
When on bar 19, precompressed steel wire rope 9 by fixed pulley 20 reversely sling floating back-pressure steel plate 11 compress cylindrical helical compression spring
4, on the first drive rod 17 and the second drive rod 19, hinge hole 18 moves backward that (now, cylindrical helical compression spring 4 is still also
The pressured state being in).As can be seen here, no matter axial dynamic loading acts on the resistance of back pressure type spiral compression spring relatively or opposite to each other
On Buddhist nun's device, cylindrical helical compression spring 4 can be compressed so as to elastic deformation occurring and consuming energy.
Claims (5)
1. a kind of back pressure type spiral compression spring damper, this damper includes fairlead, and one of this fairlead is provided with first
End cap, other end is provided with the second end cap, and inside is coaxially provided with cylindrical helical compression spring；One drive member is by the first end cap
The heart 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 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 in the fixing described drive member of axisymmetrical of described fairlead；
Described precompressed steel wire rope is located at the center in the hole of cylindrical helical compression spring with broken line state, and each pre- compressed steel
One axisymmetrical around described fairlead of cord is fixed on floating back-pressure steel plate, and other end passed around relative one
Turn back after steel wire rope break-in element, then all of precompressed steel wire rope is listed as rope bundle fairlead axis from floating back-pressure steel plate
Through point through floating back-pressure Interal fixation on described second end cap；
On described floating back-pressure steel plate, described rope bundle through position be provided through described rope bundle through hole, this through hole
Aperture is more than the diameter of described rope bundle；
By precompressed steel wire tensioning to tension force needed for default 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 back pressure type spiral compression spring damper according to claim 1 is it is characterised in that this back pressure type spiral
Compression spring damper is the damper reinforced for building structure aseismatic.
3. a kind of back pressure type spiral compression spring damper according to claim 1 is it is characterised in that this back pressure type spiral
Compression spring damper is the vertical earthquake isolating equipment for Antiseismic building.
4. a kind of back pressure type spiral compression spring damper according to claim 1,2 or 3 is it is characterised in that described
Rope bundle is fixed on the second end cap by steel wire rope self-locking anchorage；Described steel wire rope self-locking anchorage is by installing hole, jaw and locking
Bolt is constituted, wherein,
Described installing hole is located on the second end cap；Described installing hole is made up of one section of taper hole and one section of screwed hole, wherein institute
State the side that taper hole is located in fairlead, and tip points in described fairlead, described screwed hole is located at the side outside fairlead；
Described jaw is to match cone with described taper hole, and is made up of 3-5 lobe, and it is provided with clamping precompressed along axis in vivo
The clamping hole of steel wire rope；
Described check bolt is matched with described screwed hole, and internal is provided with diameter greater than arranged side by side group of precompressed steel wire rope along axis
The circular hole of the rope beam diameter becoming；
Described jaw is arranged in described taper hole, and check bolt is arranged on described screw thread in the hole.
5. a kind of back pressure type spiral compression spring damper according to claim 4 is it is characterised in that 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 |
|---|---|---|---|
| CN201610905713.1A CN106400999A (en) | 2016-10-17 | 2016-10-17 | Back pressure type helical compression spring damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610905713.1A CN106400999A (en) | 2016-10-17 | 2016-10-17 | Back pressure type helical compression spring damper |
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| CN201610905713.1A Pending CN106400999A (en) | 2016-10-17 | 2016-10-17 | Back pressure type helical compression spring damper |
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| 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 |
| CN101994775A (en) * | 2010-10-28 | 2011-03-30 | 广州大学 | Composite damping single-piston rod viscous damper |
| CN103343593A (en) * | 2013-07-25 | 2013-10-09 | 长沙理工大学 | Prestressed-tendon anchor with high accuracy and free adjustment and control functions |
| US20140041320A1 (en) * | 2011-09-22 | 2014-02-13 | Tongji University | Seismic-incurred-rupture-resistant deformation-recordable buckling-restrained brace and fabricating method thereof |
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- 2016-10-17 CN CN201610905713.1A patent/CN106400999A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101994775A (en) * | 2010-10-28 | 2011-03-30 | 广州大学 | Composite damping single-piston rod viscous damper |
| US20140041320A1 (en) * | 2011-09-22 | 2014-02-13 | Tongji University | Seismic-incurred-rupture-resistant deformation-recordable buckling-restrained brace and fabricating method thereof |
| CN103343593A (en) * | 2013-07-25 | 2013-10-09 | 长沙理工大学 | Prestressed-tendon anchor with high accuracy and free adjustment and control functions |
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