CN101251165A - Low frequency vibration isolation earthquake-proof rack - Google Patents

Low frequency vibration isolation earthquake-proof rack Download PDF

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Publication number
CN101251165A
CN101251165A CNA2008100197531A CN200810019753A CN101251165A CN 101251165 A CN101251165 A CN 101251165A CN A2008100197531 A CNA2008100197531 A CN A2008100197531A CN 200810019753 A CN200810019753 A CN 200810019753A CN 101251165 A CN101251165 A CN 101251165A
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CN
China
Prior art keywords
elasticity
vibration isolation
low frequency
limit
frequency vibration
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CNA2008100197531A
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Chinese (zh)
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CN100575738C (en
Inventor
胡年丰
胡倩平
胡雪凡
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胡年丰
胡倩平
胡雪凡
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Priority to CN200810019753A priority Critical patent/CN100575738C/en
Publication of CN101251165A publication Critical patent/CN101251165A/en
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Publication of CN100575738C publication Critical patent/CN100575738C/en

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Abstract

The invention relates to a low-frequency, vibration isolation and shakeproof skid bed for vibration isolation, shakeproof, buffering, impact resistance and structural noise reduction in shipping, vehicle, building, bridge, engineering machinery and various electromechanical appliances and engineering facilities. The invention is characterized in that a spiral elastomer made of a plurality of stainless steel twisted wires in a symmetrical or antisymmetric structure mode, a multidirectional elastic position-limit mechanism, a metal structural member, an angle switching rack and a mounting base are connected into a whole by screw threads, which has the properties of multidirectional nonlinear softened rigidity and dry damping and the function of displacement limitation. The low-frequency, vibration isolation and shakeproof skid bed is suitable for the control of large energy input (such as earthquakes, explosion impact, ocean wave, large low-frequency displacement interference, etc) in any direction, meets the needs of multidirectional low-frequency vibration isolation, buffering, shakeproof and large displacement dynamic stability in engineering and has a safe and reliable structure, long life-span, strong adaptive capacity to environment and low maintenance cost.

Description

Low frequency vibration isolation earthquake-proof rack
Technical field
The present invention relates to a kind of low frequency vibration isolation earthquake-proof rack, specifically be used for vibration isolation, antidetonation, buffering, anti-impact and the reduction construct noise of boats and ships, vehicle, building, bridge, engineering machinery, all kinds of electromechanical equipment and job facilities.
Background technique
Engineering equipment and facility disturb how to guarantee that down safe operation is the technical barrier that engineering circle is paid close attention to all the time in the vibration of external macro-energy and impact (multidirectional seismic wave greatly with displacement or explosive blast as low frequency), and its key problem in technology is how to solve the stability of a system problem that reduces under low-frequency vibration excitation response amplitude down and the displacement operating mode greatly.
In the prior art, what the most generally adopt is that vibration isolator (vibration damper) and buffer are made yielding support to dynamical system.This centering, high frequency external excitation or little displacement interference ratio are more effective, and (isolated controlling of generally≤6HZ) external big displacement interference is difficult to realize, and is poorer to the isolation effect of explosive shock wave or seismic waves to low frequency.For the isolation effect of raising system, adopted the vibration isolation technique of pneumatic spring or the formation of Composite Steel plate holder rubber at present in the engineering to low-frequency disturbance.The air capsule that pneumatic spring is made by rubber is made, and can satisfy the low frequency vibration isolation requirement, but its biggest problem is how to solve the leakage of gas in the capsule and the physical strength and the life problems of rubber material, and capsule is realized the requirement of the high internal pressure strength of transient state is very difficult; The multilayer steel plates rubber absorbers exist the physical strength of rubber and age limit too and from great, also are difficult to realize the low frequency characteristic requirement simultaneously; And the adaptive capacity that to be the said goods disturb the big displacement vibratory impulse of following macro-energy of most critical is poor, is easy to generate the colloid fracture, and these defectives directly influence the stability and the reliability of system's operation.Because the operation characteristic of engineering equipment or facility is to wish long service life, reliability height and easy to maintenance, in case the vibration isolated controlling damage of product or the actual effect that are adopted, it is very harmful, even also is difficult to the timely people of being discovery.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, thereby provide a kind of low frequency vibration isolation earthquake-proof rack, it has multidirectional low frequency vibration isolation, antidetonation, multidirectional displacement position-limiting buffering, long service life, the absorption energy is big and the structural safety reliable characteristics, and can improve anti-vibration and shock efficient, shock resistance and dynamic stability and the reliability of system, with the vibration that adapts to modern project with impact the requirement of control high technology.
Main solution of the present invention is achieved in that
The present invention mainly adopts elastic body to connect with hardware on one side, and another side is connected and fixed on the angle Change-over frame on mounting base, the spacing hole of hardware all around and be provided with the gap of limiting displacement between two groups of elasticity position-limit mechanisms; Spacer places in the elasticity position-limit mechanism, and two groups of elasticity position-limit mechanisms are fixed on the same mounting base, and mounting base is by on the installation basis that is bolted to engineering equipment or facility.
Described elastic body be by 49~163 Stainless Steel Wires through the stranded Steel Wire Strand twisted wire that forms, be fixed on again on the metal grip block to form an integral body after turning to the spiral ring structure by symmetry or antisymmetry pattern.
The compound mode of described elastic body between hardware and angle Change-over frame can be monolateral pattern composite structure and bilateral symmetry pattern composite structure.
Upper and lower two elasticity limiting stoppers and spacer in described every group of elasticity position-limit mechanism are fixed on the mounting base through bolt, nuts and washers.
The neutral position of upper and lower two the elasticity limiting stoppers in the described elasticity position-limit mechanism is provided with the spacing hole that passes hardware, and the elasticity limiting stopper is equipped with identical gap on every side with the upper and lower, left and right of the spacing hole of hardware.
Be provided with respectively on described angle Change-over frame and the hardware and link with elastic body and become 0 °~90 ° mating faces, make angle Change-over frame, hardware and elastic body be assembled into different structural type (compression, rolling cut or shear connect) with horizontal plane.
Metalwork in described mounting base, hardware, the elasticity position-limit mechanism, angle Change-over frame and attachment bolt, nut are made by stainless steel, High Strength Structural Steel or high-strength aluminum alloy material.
Described engineering equipment or facility can be by the vertical tops that is assemblied in stand of the present invention of screw bolt and nut, also can hang be installed in the side of stand of the present invention.
Elasticity limit body and Structural Hardware skeleton that elasticity limiting stopper in the described elasticity position-limit mechanism is made by rubber-like or polyamine lipid material form an integral body through bonding, hot pressing.
Compared with the prior art the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; The multidirectional low frequency vibration isolation of feasible system, antidetonation, slow (resist) dash and big displacement elastic displacement limitation function, have solved to improve system's low frequency vibration isolation effect and guarantee the contradiction of system between the security and stability under the macro-energy impact operating mode.Structural member adopts the high-strength corrosion-resisting material, prolonged the working life of system greatly, cost performance substantially exceeds existing all types of vibration isolator (vibration damper) and earthquake resistant measure, and especially (as earthquake, blast impulse, wave or strong low-frequency vibration interference etc.) can guarantee to satisfy that system is safe and reliable to operation under key project field and abominable outside Environmental Conditions condition, vibratory impulse efficiency of isolation height, maintenance cost is low and the requirement of long service life.
The present invention is applicable to the demand to vibration isolation, buffering, anti-impact, antidetonation and reduction construct noise such as all kinds of shipborne equipment facilities, mobile unit, earthquake proof construction, bridge, engineering machinery, earthquake proof construction facility and various electromechanical equipment facilities, especially under macro-energy low-frequency disturbance operating mode to the safety protection demand of system.
Description of drawings
Fig. 1 is first kind of embodiment of low frequency vibration isolation earthquake-proof rack of the present invention (monolateral pattern composite structure) general assembly drawing (main sectional view);
Fig. 2, Fig. 3 are respectively elastic body among first kind of embodiment of the present invention at the general assembly drawing (main sectional view) that becomes with adjacent component under α=0 ° and the α=90 ° fit;
Fig. 4 is second kind of embodiment of the present invention (bilateral symmetry pattern composite structure) general assembly drawing (main sectional view);
Fig. 5, Fig. 6 are respectively elastic body among second kind of embodiment of the present invention at the general assembly drawing (main sectional view) that becomes with adjacent component under α=0 ° and the α=90 ° fit;
Fig. 7, Fig. 8 are elastic body first kind of fit master sectional view and left view (symplex structure pattern) among the present invention;
Fig. 9, Figure 10 are elastic body second kind of fit master sectional view and left view (antisymmetry structural type) among the present invention;
Figure 11 is the main sectional view of elasticity limiting stopper in the elasticity position-limit mechanism among the present invention;
Figure 12~Figure 23 is respectively the different structure master sectional view and the plan view of hardware among the present invention;
Figure 24~Figure 29 is respectively the structural front view and the side view of the angle Change-over frame of different structure type among the present invention.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
The present invention mainly is made up of mounting base 1, elastic body 2, elasticity limiting stopper 3, spacer 4, hardware 5, angle Change-over frame 6, screw 7, bolt 8, Steel Wire Strand twisted wire 9, metal grip block 10, elasticity limit body 11, metal frame 12 and packing ring etc.
As shown in Figure 1, mounting base 1 usefulness bolt 7 of the present invention is fixed on the basis of engineering equipment or facility, elastic body 2 links with hardware 5 and angle Change-over frame 6 respectively by screw 7, angle Change-over frame 6 usefulness bolts 8 are fixed on the mounting base 1, the angle [alpha] (referring to accompanying drawing 16 and accompanying drawing 24) and the horizontal plane (α can select between 0 °~90 ° during specific design) at 45 at position match between elastic body 2 and hardware 5 and the angle Change-over frame 6, make elastic body 2 be in the rolling cut stress at work, each passes through bolt by two elasticity limiting stoppers 3 to two groups of elasticity position-limit mechanisms respectively, nuts and washers is fixed on the mounting base 1, constitutes the monolateral pattern composite structure of the present invention.Per two elasticity limiting stoppers 3 are one group, the spacing hole of hardware 5 is positioned at the neutral position of every group of upper and lower elasticity limiting stopper 3, the neutral position of elasticity limiting stopper 3 be provided with the spacing hole that passes hardware 5 and and spacing hole around form the maximum permission displacement space of design in advance between the upper and lower, left and right; Spacer 4 is used for adjusting hardware 5 all has identical pre-design load with the gap of the spacing hole of hardware 5 in the upper and lower, left and right all directions to realize elasticity limiting stopper 3 at the equilibrium position of elasticity position-limit mechanism point.Hardware 5 links by bolt and engineering equipment or facility again.Thereby realized the vibration isolation earthquake-proof resilient connection between engineering equipment or facility and basis.
Shown in accompanying drawing 2, accompanying drawing 3, accompanying drawing 2, accompanying drawing 3 illustrate among first kind of embodiment of the present invention the structural type of (referring to accompanying drawing 12~accompanying drawing 15 and accompanying drawing 26~accompanying drawing 29) when the angle [alpha] when the position that matches between elastic body 2 and hardware 5 and the angle Change-over frame 6 becomes 0 ° and 90 ° with horizontal plane respectively, and the stress of elastic body 2 when work is in compression respectively and shears stress.Each parts is identical with the function that accompanying drawing 1 is realized.
As shown in Figure 4, accompanying drawing 4 is a bilateral symmetry pattern composite structure of the present invention, be second kind of embodiment of the present invention, on the monolateral pattern composite structure basis of accompanying drawing 1 explanation, change by a left side, right bilateral symmetry structural type is implemented, angle [alpha] (referring to accompanying drawing 18 and accompanying drawing 25) and the horizontal plane at position of matching between elastic body 2 and hardware 5 and the angle Change-over frame 6 is at 45, the stress of elastic body 2 when work is bilateral symmetry rolling cut stress, realized the symmetry properties of overall structure mechanics, stress is more steady during system works, also is convenient to install adjust.The function that other each parts are realized is identical with accompanying drawing 1.
Shown in accompanying drawing 5, accompanying drawing 6, accompanying drawing 5, accompanying drawing 6 are respectively among second kind of embodiment of the present invention angle [alpha] when the position that matches between hardware 5 and angle Change-over frame 6 and the elastic body 2 structural type of (referring to accompanying drawing 20~accompanying drawing 22 and accompanying drawing 26~accompanying drawing 29) when becoming 0 ° and 90 ° with horizontal plane, make elastic body bear the bilateral symmetry stress of compression and shear pattern respectively when work.Each parts is identical with the function that accompanying drawing 4 is realized respectively.
Shown in accompanying drawing 7~accompanying drawing 10, accompanying drawing 7~accompanying drawing 10 is respectively elastic body 2 symmetry and the antisymmetry structural type schematic representation among the present invention.Elastic body 2 can be turned to the spiral ring body by symmetrical structure pattern (accompanying drawing 7) and antisymmetry formula structural type (accompanying drawing 9) and is fixed on the metal grip block 10 and constitutes an integral body through the stranded Steel Wire Strand twisted wire of forming 9 by 49~163 Stainless Steel Wires.Mounting hole on the metal grip block 10 is as connecting usefulness with corresponding part of the present invention.The diameter, number of share of stock, stranded bolt angle, coiling spiral angle and the ring bodies size that change the multiply Stainless Steel Wire can change the mechanical characteristics such as rigidity, damping and bearing capacity of elastic body, to satisfy the engineering requirement.
As shown in Figure 11, accompanying drawing 11 is the structural representation of elasticity limiting stopper in the elasticity position-limit mechanism among the present invention.The elasticity limit body 11 that elasticity limiting stopper 3 in the elasticity position-limit mechanism is made by rubber-like or polyamine fat material is one with metal frame 12 through bonding thermoforming.Elastic material is silicone rubber, oil resistant rubber or polyamine lipid material, and metal frame 12 adopts stainless steel, structural steel or high-strength aluminum alloy material to make.Change elasticity limit body material composition and contour structure size, can adjust the compressive strength of elasticity limit body, the displacement restriction amount of collision contact flexibility and setting.
Shown in accompanying drawing 12~accompanying drawing 17, accompanying drawing 12~accompanying drawing 17 be respectively first kind of embodiment of the present invention, three kinds of assembly structure patterns (α=45 °, when α=0 ° and α=90 °) in the structural type of hardware 5, its effect one is to realize connecting of engineering equipment or facility and elastic body 2 of the present invention, the 2nd, and the setting gap is with realization system resilience displacement restriction function (referring to accompanying drawing 1~accompanying drawing 3) between the spacing hole by hardware 5 and the elasticity position-limit mechanism limiting stopper 3.
Shown in accompanying drawing 18~accompanying drawing 23, accompanying drawing 18~accompanying drawing 23 is respectively three kinds of assembly structure patterns (α=45 ° of second kind of embodiment of the present invention, when α=0 ° and α=90 °) in the structural type (referring to accompanying drawing 4~accompanying drawing 6) of hardware 5, it realizes that function is identical with the explanation of accompanying drawing 12~accompanying drawing 17.
Shown in accompanying drawing 24~accompanying drawing 29, accompanying drawing 24~accompanying drawing 29 is respectively among the present invention and the match structural representation of angle Change-over frame 6 of connection of elastic body 2, and explanation is when the mating face and horizontal plane is at 45, the structural type (referring to accompanying drawing 1~accompanying drawing 6) of angle Change-over frame when 0 ° and 90 ° of matching between angle Change-over frame and the elastic body respectively.Three kinds of structural types of this of angle Change-over frame 6 can make elastic body bear the stress characteristic of rolling cut, compression and shearing respectively.
Shown in accompanying drawing 16~accompanying drawing 29, hardware 5 that accompanying drawing 24~accompanying drawing 29 is illustrated and angle Change-over frame 6 are stainless steel, High Strength Structural Steel or high tensile aluminium alloy and form through precision casting, and structural strength, impact resistance and corrosion resistance all satisfy the engineering requirement.
Working principle of the present invention and working procedure:
The present invention adopts 49~163 Stainless Steel Wires, and seat, spacer and bolt class fastening piece etc. constitute low frequency vibration isolation earthquake-proof rack of the present invention by the Assembly mode of setting with turning to helical elastic body, hardware, elasticity position-limit mechanism, angle Change-over frame and installation by symmetry or antisymmetry structural type through the stranded Steel Wire Strand twisted wire that forms.Elastic body links by bolt and hardware and angle Change-over frame.The different fit in stand of the present invention can change rigidity, damping, bearing capacity and the stress of elastic body on all directions of space with spiral ring size and elastic body for steel wire diameter, number of share of stock, the stranded helix angle of change elastic body, to satisfy user's different requirements.
Rigidity and the dry-friction damping performance of elastic body on any direction of space all is softening type nonlinear characteristics, the peak response frequency of system (being the natural frequency in the linear system) reduces automatically with the increase of input displacement or speed, and the peak response amplification factor of system (being the resonance power gain in the linear system) reduces automatically with the increase of input displacement or speed.System disturbs external vibration and impact and is fully absorbed and consumption, thereby significantly reduces the vibration and the shock response of system, the safety and steady operation under the low frequency macro-energy disturbed condition that the realization system goes up in any direction.
When external dynamically big displacement is disturbed when producing, produce for avoiding engineering equipment or facility that unstability tilts and collapses or with the basis rigid collision takes place, the present invention has designed a kind of elasticity position-limit mechanism with multidirectional displacement restriction function.When because of external interference (as blast or impact) when making equipment produce the dynamic displacement that surpasses pre-design (permission dynamic displacement of this pre-design be with guarantee equipment not unstability make demands before being), the i.e. generation effect of elasticity position-limit mechanism, the equipment buffering course that process is certain in the elasticity position-limit mechanism, Elastic Contact process are until stopping to continue displacement rapidly, and unstability and safe operation do not take place the equipment that guaranteed.
Installation connecting mode between engineering equipment or facility and the present invention is varied, on the equipment that is mounted in commonly used or the bottom or four sides of facility, firmly connects by bolt.
When vibration that comes from any direction transmission and impact are disturbed, when especially the big displacement of low frequency disturbs (as seismic waves, explosive blast etc.) to act on the mounting base of the present invention, after the absorption and consumption of elastic body, the response that is passed on engineering equipment or the facility is reduced significantly to intake.Because the attainable system of the present invention minimum peak response frequency can reach below the 3Hz, so the buffer action that the low frequency macro-energy of this class character is disturbed is very effective.
Equally, when engineering equipment or facility produce vibration owing to self imbalance or impact, be delivered on the elastic body by hardware of the present invention, again through absorption and the consumption of elastic body to intake, the response that is passed on the mounting base is significantly reduced, the system architecture noise significantly reduces, and has reduced the harm of the vibratory impulse of engineering equipment or facility to surrounding environment.
When external vibration with impact to disturb when surpassing License Value because of displacement is excessive, the present invention realizes restriction to dynamic displacement stoping the continuation expansion of the moving displacement of this class by the elasticity position-limit mechanism, makes engineering equipment remain on the state of safely and steadily running.No matter this interference is that the present invention all can possess this function from any direction in space.
All hardwares among the present invention are stainless steel, High Strength Structural Steel or high-strength aluminum alloy material and make, and impact resistance is strong, and the structural strength height can adapt to various environmental conditions.

Claims (10)

1, a kind of low frequency vibration isolation earthquake-proof rack is characterized in that adopting elastic body (2) to connect with hardware (5) on one side, and another side is connected on the angle Change-over frame (6), and angle Change-over frame (6) is fixed on the mounting base (1); Around the spacing hole of hardware (5) and be provided with the gap of limiting displacement between two groups of elasticity position-limit mechanisms, two groups of elasticity position-limit mechanisms are fixed on the same mounting base (1); Mounting base (1) is by on the installation basis that is bolted to engineering equipment or facility.
2, low frequency vibration isolation earthquake-proof rack according to claim 1 is characterized in that described elastic body (2) is to be fixed on metal grip block (10) again by 49~163 Stainless Steel Wires after the stranded Steel Wire Strand twisted wire (9) that forms turns to the spiral ring structure by symmetry or antisymmetry pattern to go up to form an integral body.
3, low frequency vibration isolation earthquake-proof rack according to claim 1 is characterized in that the compound mode of described elastic body (2) between hardware (5) and angle Change-over frame (6) can be monolateral pattern composite structure or bilateral symmetry pattern composite structure.
4, low frequency vibration isolation earthquake-proof rack according to claim 1 is characterized in that described every group of elasticity position-limit mechanism by upper and lower two elasticity limiting stoppers (3) and spacer (4), is fixed on the mounting base (1) through bolt, nut.
5,, it is characterized in that the neutral position of upper and lower two the elasticity limiting stoppers (3) in the described elasticity position-limit mechanism is provided with the spacing hole that passes hardware (5) according to claim 1 or 4 described low frequency vibration isolation earthquake-proof racks.
6,, it is characterized in that the elasticity limiting stopper (3) of described elasticity position-limit mechanism is provided with identical gap on every side with the upper and lower, left and right of the spacing hole of hardware (5) according to claim 4 or 5 described low frequency vibration isolation earthquake-proof racks.
7, low frequency vibration isolation earthquake-proof rack according to claim 1 is characterized in that being provided with respectively on described angle Change-over frame (6) and the hardware (5) and links with elastic body (2) and become 0 °~90 ° mating faces with horizontal plane.
8, low frequency vibration isolation earthquake-proof rack according to claim 1 is characterized in that metalwork, angle Change-over frame (6) and bolt, the nut in described mounting base (1), hardware (5), the elasticity position-limit mechanism made by stainless steel, High Strength Structural Steel or high-strength aluminum alloy material.
9, according to claim 4 or 5 described low frequency vibration isolation earthquake-proof racks, it is characterized in that described elasticity limiting stopper (3) by elasticity limit body (11) and metal frame (12) through bonding, be hot pressed into an integral body.
10, low frequency vibration isolation earthquake-proof rack according to claim 9 is characterized in that the elasticity limit body (11) in the described elasticity position-limit mechanism is made by rubber-like or polyamine lipid material.
CN200810019753A 2008-03-14 2008-03-14 Low frequency vibration isolation earthquake-proof rack CN100575738C (en)

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Application Number Priority Date Filing Date Title
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CN100575738C CN100575738C (en) 2009-12-30

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102502080A (en) * 2011-09-27 2012-06-20 中国人民解放军军事交通学院 Vibration damping box with adjustable rigidity and damping
CN102700837A (en) * 2012-06-18 2012-10-03 无锡市宏源弹性器材有限公司 Anti-bump carrying platform
CN102720790A (en) * 2012-06-29 2012-10-10 无锡市宏源弹性器材有限公司 In-parallel type vibration isolation and resistance device
CN107642579A (en) * 2016-07-21 2018-01-30 (株)大兴机电 The crash roll construction shockproof stop frame of omission type and antidetonation generator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102502080A (en) * 2011-09-27 2012-06-20 中国人民解放军军事交通学院 Vibration damping box with adjustable rigidity and damping
CN102700837A (en) * 2012-06-18 2012-10-03 无锡市宏源弹性器材有限公司 Anti-bump carrying platform
CN102720790A (en) * 2012-06-29 2012-10-10 无锡市宏源弹性器材有限公司 In-parallel type vibration isolation and resistance device
CN107642579A (en) * 2016-07-21 2018-01-30 (株)大兴机电 The crash roll construction shockproof stop frame of omission type and antidetonation generator
CN107642579B (en) * 2016-07-21 2019-06-04 (株)大兴机电 The crash roll construction shockproof stop frame of omission type and antidetonation generator

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Owner name: WUXI HONGYUAN DEVFLEX CO., LTD.

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