CN106523586B - Vibrating isolation system with backpressure device - Google Patents
Vibrating isolation system with backpressure device Download PDFInfo
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- CN106523586B CN106523586B CN201611257555.XA CN201611257555A CN106523586B CN 106523586 B CN106523586 B CN 106523586B CN 201611257555 A CN201611257555 A CN 201611257555A CN 106523586 B CN106523586 B CN 106523586B
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- backpressure device
- isolation system
- counterweight
- vibrating isolation
- connector
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
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- General Engineering & Computer Science (AREA)
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- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of vibrating isolation systems with backpressure device, belong to civil engineering structure antivibration area, for controlling the vibration of machinery equipment to external environment influence or mitigating influence of the vibration of external environment to machinery equipment.The present invention includes counterweight rack and vibration isolator, vibration isolator is between substrate and counterweight rack, counterweight rack is supported on vibration isolator, elastic supporting element is equipped in vibration isolator, elastic supporting element is at least made of metal coil spring, it further include backpressure device, backpressure device includes back-pressure elastic element and connector, back-pressure elastic element one end acts on counterweight rack, the other end acts on connector, connector is connected with substrate or vibration isolator pedestal, and back-pressure elastic element is contrary with supporting force of the elastic supporting element to counterweight rack to the force direction of counterweight rack.Compared with prior art, intrinsic frequency of the invention is easily controllable, and vibration isolating effect is more guaranteed.
Description
Technical field
The invention belongs to civil engineering structure antivibration areas, and in particular to a kind of for controlling the vibration of machinery equipment
The vibrating isolation system that the vibration of external environment influence or mitigation external environment influences machinery equipment.
Background technique
In recent years, with CHINESE INDUSTRIES upgrade continuous propulsion, various rotation equipments be widely used in industrial production and
In urban construction field, such as various generating sets, water pump, blower, compressor etc., these equipment generate during operation
Vibration and the governing problem of noise also increasingly obtain the concern of people.It is with gas power plant machine power cooling blower system
Example, motor, reduction gearbox, blade generate driving frequency very abundant, and vibration vibration decaying in building structure is small, easily excites
Building element resonance, structural vibration are changed into airborne noise to external radiation, influence normal study, work, the rest of surrounding resident
And sleep.Currently, mostly use the principle of vibration isolation to control such vibration and noise problem, place a device on Elastic Isolator,
Vibrating isolation system is formed using equipment and the quality of equipment base and elastic element, and generally cooperates damping element, to equipment operation
The vibration generated in the process is consumed and is isolated, so that the vibration reduced on external environment influences.By steel spring as elasticity
The vibration isolator of element composition, it is extensive due to having many advantages, such as that bearing capacity is big, vibration isolation efficiency is high, performance is stable, long service life
Applied to various high-grade vibration isolation occasions.
When vibration feasible value control is tighter, the vibration isolation efficiency of apparatus for rotating vibrating isolation system and the vibration velocity of machinery base
(or vibration amplitude or vibration acceleration) will form conflict, if effectiveness in vibration suppression is up to standard, often vibration velocity will surpass
Mark, vice versa；At this time only have one section of very narrow frequency range that can guarantee that the two is up to standard simultaneously.In such vibrating isolation system
In, how to realize that vibrating isolation system intrinsic frequency is stablized, is the key that guarantee vibration isolating effect, the vibration isolation designed by calculating analysis
The accurate realization of system frequency is just extremely important, and tends to occur deviation in practice.
By the practice and exploration that are up to several years, numerous heavy constructions, it was found that wherein regular: vibrating isolation system is actually intrinsic
Frequency is often more relatively low than Theoretical Design, and even if spring carries out rigidity actual measurement one by one and well-chosen is combined into calculating analysis and sets
The theoretical value rigidity needed is counted, all do not can avoid.
By studying and testing repeatedly, reason is eventually found: often having used multiple steel in such vibrating isolation system simultaneously
Spring vibration-isolator may include multiple steel spring members in each steel spring vibration isolator, miss in various mismachining tolerances and assembly again
Under the cumulative function of difference, the dead load that weight of equipment provides, which often cannot achieve, allows whole or even most of steel spring members to enter
The born external force linear change stage directly proportional to the compression displacement of itself, or even after equipment operation applies dynamic section of lotus,
When especially vibrating isolation system intrinsic frequency is higher (such as 10Hz or more), the amplitude of mass block vibration is smaller, is still likely to occur phase
When a part of steel spring member is in the working stage of nonlinear change completely or partially, so as to cause vibrating isolation system global stiffness ratio
Theoretical value is relatively low, intrinsic frequency is relatively low, therefore in the case where similarly disturbing power effect, vibration velocity and amplitude are bigger than normal, to cause to shake
Dynamic value is exceeded.
In addition, the mechanical equipment severe for certain application environments, such as ship power equipment, due to causing when stormy waves is big
Hull acutely rocks, and power-equipment also inevitably generates shaking, therefore the vibrating isolation system of power-equipment will not only be born
Pressure loading, it is necessary to it is able to bear certain pull-up load, it is no to guarantee the safety of power-equipment and the stabilization of vibrating isolation system
Then the isolation mounting in power-equipment or vibrating isolation system just has the danger toppled.Equally, floating ballast bed there is also this for short prefabricated board
Class problem, due to the lighter in weight of short prefabricated board, can generate seesaw effect when rail vehicle enters from one end, i.e., short pre-
There is the trend being upturned in the other end of making sheet, if do not can be effectively controlled, be then located at the vibration isolator that short prefabricated board tilts side
The case where will appear insufficient pressure, it is easy to cause short prefabricated board to shift or the problems such as vibration isolator elastic element topples, to daily
Operation brings security risk.To guarantee that safety, conventional practice are inevitably to form vibration short circuit using rigid limit,
Greatly reduce the effect of vibration and noise reduction of vibrating isolation system.
In conclusion market is more acurrate and become with load compared with theoretical calculation there is an urgent need to provide a kind of system stiffness
Change relatively stable, intrinsic frequency and vibration isolating effect also more reliable and more stable vibrating isolation system.
Summary of the invention
The purpose of the present invention is to solve the above problem, provides that a kind of system frequency is easily controllable, and vibration isolating effect is more
The guaranteed vibrating isolation system with backpressure device.
The present invention is achieved in that with the vibrating isolation system of backpressure device including counterweight rack and vibration isolator, vibration isolator
Between substrate and counterweight rack, counterweight rack is supported on vibration isolator, and elastic supporting element, the bullet are equipped in vibration isolator
Property supporting member is at least made of metal coil spring, it is characterised in that further includes backpressure device, backpressure device includes back-pressure bullet
Property element and connector, back-pressure elastic element one end act on counterweight rack, the other end acts on connector, connector with
Substrate or vibration isolator pedestal are connected, and back-pressure elastic element to the force direction of counterweight rack and elastic supporting element to matching
The supporting force of weight rack is contrary.
The concrete form of the back-pressure elastic element is varied, such as comprising at least one extension spring stretches bullet
Spring one end is connected with connector, and other end mounting acts on counterweight rack, and extension spring is to the active force of counterweight rack
Direction is contrary with supporting force of the elastic supporting element to counterweight rack；Alternatively, back-pressure elastic element includes at least one pressure
Contracting spring, compressed spring one end back-pressure act on counterweight rack, and the other end acts on connector, connector and substrate or every
The device pedestal that shakes is connected, and compressed spring is to the force direction of counterweight rack and the branch to counterweight rack of elastic supporting element
Load is contrary.The compressed spring is evenly arranged around connector when being arranged two or more.For including compression bullet
The back-pressure elastic element of spring can also include equal pressing plate in back-pressure elastic element, and equal pressing plate be placed in the end of compressed spring, connect
Part and equal pressing plate cooperate, and compressed spring back-pressure is acted on counterweight rack.It should be noted that the back-pressure elastic element can
To be extension spring that metal coil spring is constituted, it is also possible to spring made of metal coil spring, high molecular material, metal
The compressed spring of the forms such as the complex spring that disc spring or high molecular material and metal are constituted, can be according to actual needs in application
It selects.In addition, in order to facilitate the installation of, installation passage can be arranged on counterweight rack, connector is arranged in installation passage.
In addition, back-pressure elasticity can also be equipped on counterweight rack or/and connector for the ease of limiting back-pressure elastic element
The centering limited block of element.
The concrete form of the connector can also be varied, including screw rod, hook, the otic placode with mount hole, hangs
Ring, the screw rod with connecting flange detain connector and detain connector etc. with connecting flange, as long as being able to achieve reliable
Connection, can realize good effect.
It include damping unit in vibration isolator or/and backpressure device, the damping unit includes hydraulic to improve vibration isolating effect
A variety of tools such as formula damping unit, viscous damping devices, electric eddy-current damping device, magnetorheological damping device and viscoelastic damping device
Body form is realized the purpose for rapidly depleting vibrational energy, can be worked as applied to the present invention as long as system damping can be effectively improved
In.
Heretofore described counterweight rack includes plate made of armored concrete or metal material or frame structure.It can
Reserved through hole to be arranged on counterweight rack, back-pressure elastic element and elastic supporting element are arranged in reserved through hole, reserve logical
Bearing member is equipped in hole, elastic supporting element is supported on bearing member, and there are central through hole, the rulers of central through hole in the middle part of bearing member
Very little guarantee elastic supporting element can pass through, and back-pressure elastic element is acted also on bearing member and acted on by bearing member
On counterweight rack；Or back-pressure elastic element and elastic supporting element are integrated among a shell, shell and counterweight platform
Frame is solidly fixed, and enclosure interior is equipped with bearing member, and elastic supporting element is supported on bearing member, and there are centers in the middle part of bearing member
The Assurance of Size elastic supporting element of through-hole, central through hole can pass through, and back-pressure elastic element acts also on bearing member
And it is acted on counterweight rack by bearing member.
It should be pointed out that it is based on above description, the back-pressure elastic element in the present invention, either single spring,
It can be the groups of springs that multiple springs are constituted, can also be the spring damping isolation mounting of spring and damping unit composition.In addition,
Metal coil spring in elastic supporting element of the present invention is constituted, typically helical steel springs, it is of course also possible to be spiral
The complex spring etc. that steel spring and rubber or elastane collectively form.
The present invention is filled by adding backpressure device in vibrating isolation system using back-pressure with the vibrating isolation system of backpressure device
The back-pressure active force for setting offer, realizes the preload of elastic supporting element, enters whole or at least most of elastic supporting element
The born external force linear change stage directly proportional to the compression displacement of itself, to eliminate or partially remove mismachining tolerance and dress
Influence with error to system frequency keeps the intrinsic frequency variation range of system smaller, guarantees that the present invention is filled with back-pressure
The intrinsic frequency parameter for the vibrating isolation system set is in reasonable controllable levels always, the vibration isolating effect of system also available abundant guarantor
Card.Verification result through continuing test shows: if load continues increasing, more than certain numerical value, spring on spring vibration-isolator
The rigidity of vibration isolator will become surely, and intrinsic frequency will be stablized, and vibration velocity will be up to standard.Due to being additionally arranged backpressure device, this
The system stiffness of vibrating isolation system of the invention with backpressure device is more acurrate and relatively steady with load change compared with theoretical calculation
Fixed, intrinsic frequency is also more reliable and more stable with vibration isolating effect.The safety of vibrating isolation system of the present invention with backpressure device is more
Good, more severe especially suitable for working environment machinery equipment, such as ship power equipment, when wind and waves effect pontoon is acute
It is strong to cause ship power equipment also inevitably to generate shaking when rocking, at this point, relying primarily on the present invention with backpressure device
Vibrating isolation system in vibration isolator bear downward pressure load, utilize backpressure device bear pull-up load, it is ensured that power is set
The stabilization of standby safety and vibrating isolation system, the vibrating isolation system for overcoming spot ship power-equipment bear upward pulling force load-carrying ability
It is insufficient, the characterisitic parameters such as system frequency are unstable when being difficult to cope with load change, the insufficient problem of safety, therefore, this
Vibrating isolation system intrinsic frequency during the work time and vibration isolating effect of the invention with backpressure device are also more reliable and more stable.Especially
It is noted that the backpressure device being had in the vibrating isolation system of backpressure device due to the present invention is also provided simultaneously with elastic spacing function
Can, it can effectively avoid vibrating short circuit problem caused by conventional rigid limit, the anti-vibration performance of vibration isolator can be given full play to, because
This greatly improves final vibration and noise reducing level, and great number tested data shows that its final effect of vibration and noise reduction can be improved
20% is even higher.To achieve the above object, in general, the precommpression stroke of compressed spring should be greater than work in backpressure device
The 110% of the maximum deflection downwards of counterweight rack under state.The maximum of the counterweight rack downwards deflection from counterweight rack
It pre-tightens equilbrium position to start to calculate, the deformation of expanding with heat and contract with cold comprising counterweight rack.
The structure of vibrating isolation system of the present invention with backpressure device is simple, and vibration and noise level are low, has vibration and noise reducing
The advantages that performance stabilization, vibration isolation efficiency height, long service life, good safety, can be widely applied to various ship power equipment,
In industrial apparatus for rotating or the elastic vibration isolation foundation engineering of rail traffic vehicles operation, application prospect is had a vast market.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of vibrating isolation system that the present invention has backpressure device.
Fig. 2 is the sectional view along A-A of Fig. 1.
Fig. 3 is the second structural representation of vibrating isolation system of the present invention with backpressure device.
Fig. 4 is the third structural representation of vibrating isolation system of the present invention with backpressure device.
Fig. 5 is the four of the structural schematic diagram of vibrating isolation system of the present invention with backpressure device.
Fig. 6 is the five of the structural schematic diagram of vibrating isolation system of the present invention with backpressure device.
Fig. 7 is the six of the structural schematic diagram of vibrating isolation system of the present invention with backpressure device.
Fig. 8 is the seven of the structural schematic diagram of vibrating isolation system of the present invention with backpressure device.
Fig. 9 is the eight of the structural schematic diagram of vibrating isolation system of the present invention with backpressure device.
Figure 10 is the nine of the structural schematic diagram of vibrating isolation system of the present invention with backpressure device.
Specific embodiment
Embodiment one
The present invention has the vibrating isolation system of backpressure device, including counterweight rack 1 and vibration isolator as shown in Figure 1 and Figure 2, described
Counterweight rack 1 is one block of platen made of Reinforced Concrete Materials, and the vibration isolator is elastic supporting element 2 and damping unit 3
The spring damping vibration isolator collectively constituted, wherein elastic supporting element 2 includes four helical steel springs, and damping unit 3 is specially
Viscous damping devices, between substrate 7 and counterweight rack 1, counterweight rack 1 is supported on vibration isolator vibration isolator；In addition, also wrapping
Backpressure device is included, backpressure device includes back-pressure elastic element 4 and connector 5, wherein back-pressure elastic element 4 is metal stretching bullet
Spring, connector 5 are the otic placode with mount hole, and connector 5 is fixed in substrate 7,4 one end of back-pressure elastic element by with counterweight
The preset integral mounting of metal anchorage 6 of rack 1 acts on counterweight rack 1, and other end mounting acts on connector 5,
And back-pressure elastic element 4 is to the force direction of counterweight rack 1 with elastic supporting element 2 to the supporting force side of counterweight rack 1
To opposite.
The present invention is filled by adding backpressure device in vibrating isolation system using back-pressure with the vibrating isolation system of backpressure device
The back-pressure active force for setting offer, realizes the preload of elastic supporting element, enters whole or at least most of elastic supporting element
The born external force linear change stage directly proportional to the compression displacement of itself, to eliminate or partially remove mismachining tolerance and dress
Influence with error to system frequency keeps the intrinsic frequency variation range of system smaller, guarantees that the present invention is filled with back-pressure
The intrinsic frequency parameter for the vibrating isolation system set is in reasonable controllable levels always, the vibration isolating effect of system also available abundant guarantor
Card.Verification result through continuing test shows: if load continues increasing, more than certain numerical value, spring on spring vibration-isolator
The rigidity of vibration isolator will become surely, and intrinsic frequency will be stablized, and vibration velocity will be up to standard.Due to being additionally arranged backpressure device, this
The system stiffness of vibrating isolation system of the invention with backpressure device is more acurrate and relatively steady with load change compared with theoretical calculation
Fixed, intrinsic frequency is also more reliable and more stable with vibration isolating effect.The safety of vibrating isolation system of the present invention with backpressure device is more
Good, more severe especially suitable for working environment machinery equipment, such as ship power equipment, when wind and waves effect pontoon is acute
It is strong to cause ship power equipment also inevitably to generate shaking when rocking, at this point, relying primarily on the present invention with backpressure device
Vibrating isolation system in vibration isolator bear downward pressure load, utilize backpressure device bear pull-up load, it is ensured that power is set
The stabilization of standby safety and vibrating isolation system, the vibrating isolation system for overcoming spot ship power-equipment bear upward pulling force load-carrying ability
It is insufficient, the characterisitic parameters such as system frequency are unstable when being difficult to cope with load change, the insufficient problem of safety, therefore, this
Vibrating isolation system intrinsic frequency during the work time and vibration isolating effect of the invention with backpressure device are also more reliable and more stable.Especially
It is noted that the backpressure device being had in the vibrating isolation system of backpressure device due to the present invention is also provided simultaneously with elastic spacing function
Can, it can effectively avoid vibrating short circuit problem caused by conventional rigid limit, the anti-vibration performance of vibration isolator can be given full play to, because
This greatly improves final vibration and noise reducing level, and great number tested data shows that its final effect of vibration and noise reduction can be improved
20% is even higher.In application, being fixed at industrial equipment or track structure on counterweight rack 1.
It should be noted that in the present invention, damping unit in vibration isolator in addition to already mentioned viscous damping devices with
Outside, can also be fluid pressure type damping unit, electric eddy-current damping device, magnetorheological damping device and viscoelastic damping device etc. other
The damping unit of type is realized the purpose for rapidly depleting vibrational energy, can be applied to as long as system damping can be effectively improved
In the present invention；In addition, the form of connector can also be varied, in addition to the otic placode with mount hole, be also possible to hook,
Other connection structures such as link, are reliably connected as long as being able to achieve, and can act as identical effect；In addition, constituting back-pressure elasticity
The metal stretching spring of element 4, specifically can be extension spring made of the materials such as spring steel or stainless steel；Further more, of the invention
In, the metal coil spring in elastic supporting element is primarily referred to as helical steel springs, it is of course also possible to be helical steel springs with
The complex spring that rubber or elastane collectively form；It may also be noted that the counterweight rack is in addition to can be
Outside plate made of Reinforced Concrete Materials, frame structure or metal material made of Reinforced Concrete Materials can also be
Plate and frame structure etc. made of expecting, and the shape of counterweight rack can according to need design, not necessarily as this example diagram
It in showing like that, is the regular shapes such as rectangle.Above technical scheme is all based on the simple change of the technology of the present invention principle, herein only
Be described with text, all the present invention claims protection scope among.Above description can equally be well applied to of the invention other
Embodiment is described in this together.
The structure of vibrating isolation system of the present invention with backpressure device is simple, and vibration and noise level are low, has vibration and noise reducing
The advantages that performance stabilization, vibration isolation efficiency height, long service life, good safety, can be widely applied to various ship power equipment,
In industrial apparatus for rotating or the elastic vibration isolation foundation engineering of rail traffic vehicles operation, application prospect is had a vast market.
Embodiment two
The present invention has the vibrating isolation system of backpressure device as shown in Figure 3, and the difference with embodiment one is, the vibration isolator
The spring vibration isolation device being only made of elastic supporting element 2, elastic supporting element 2 are specially four helical steel springs；In addition, this
In the backpressure device of example, connector 5 is to detain connector with connecting flange 13, this detain connector by channel steel welding and
At connecting flange 13 and metal anchorage 14 pre-buried in substrate 7 are fixed together using fastener 15, realized connector
5 are fixed in substrate 7；In addition, back-pressure elastic element is collectively constituted by 9, two compressed springs 30 of equal pressing plate and damping unit 8,
Wherein equal pressing plate is made of steel plate, and compressed spring 30 is helical steel springs, and damping unit 8 is specially fluid pressure type damping unit.Its
In, equal pressing plate 9 is placed in the end of compressed spring 30, and connector 5 and equal pressing plate 9 cooperate, and 30 one end of compressed spring is made to act on company
On fitting 5, other end back-pressure is acted on counterweight rack 1, and compressed spring 30 is to the force direction and bullet of counterweight rack 1
Property supporting member 2 is contrary to the supporting force of counterweight rack 1.In order to guarantee that back-pressure elastic element will not be sent out in use
Equal pressing plate 9, is welded and fixed together by raw play with connector 5 after the installation is completed.
Vibrating isolation system described in this example with backpressure device has with the present invention described in embodiment one with backpressure device
The same advantage of vibrating isolation system, is not repeated herein.To realize above-mentioned advantage, in general, compressed spring in backpressure device
Precommpression stroke should be greater than the 110% of the maximum deflection downwards of counterweight rack under working condition.The counterweight rack it is maximum to
Lower deflection is calculated since the preload equilbrium position of counterweight rack, the deformation of expanding with heat and contract with cold comprising counterweight rack.It needs to illustrate
, the compressed spring in the back-pressure elastic element can also be the metal spiral of other materials other than helical steel springs
The compound bullet that spring, metal coil spring, spring, metal disc spring or high molecular material and metal made of high molecular material are constituted
Spring, the high molecular material include elastic rubber, elastic polyurethane or elastoplastic etc., can be according to actual needs in application
It selects；In addition, the damping unit for including in backpressure device can also be viscous other than already mentioned fluid pressure type damping unit
A variety of concrete forms such as stagnant damping unit, electric eddy-current damping device, magnetorheological damping device and viscoelastic damping device, as long as energy
System damping is effectively improved, realizes the purpose for rapidly depleting vibrational energy, can be applied in the present invention；In addition, this example
In, it, can not in vibration isolator if can satisfy the needs of system damping due to containing damping unit in back-pressure elastic element
Damping unit is still further set, in order to the maintenance in later period, certainly, this technical principle is based on, if it is necessary, can also
Damping unit is arranged simultaneously in backpressure device and vibration isolator.Above technical scheme is all based on the letter of the technology of the present invention principle
Altered is only described herein with text, all the present invention claims protection scope among.Above description can equally be well applied to
The other embodiment of the present invention is described in this together.
Embodiment three
As shown in Figure 4 the present invention have backpressure device vibrating isolation system, with embodiment two the difference is that, counterweight platform
1 two sides of frame are equipped with boss 31；The vibration isolator is the spring damping that multiple elastic supporting elements 2 are collectively constituted with damping unit 3
Isolation mounting, elastic supporting element 2 are specially helical steel springs, and damping unit 3 is specially viscous damping devices；Backpressure device
In, connector 5 is made of I-steel, and the lower end of connector 5 is fixed in substrate 7, and back-pressure elastic element 4 is helical steel springs structure
At compressed spring.4 one end of back-pressure elastic element acts on connector 5, and other end back-pressure acts on convex in counterweight rack 1
On platform 31.To prevent back-pressure elastic element 4 from unexpected play occurring in use, back-pressure elasticity member is additionally provided on connector 5
The centering limited block 10 of part 4.
Compared with embodiment two, it is the advantages of technical solution described in this example, due to being provided with damping dress in vibration isolator
It sets, damping unit is no longer set in back-pressure elastic element 4, in addition, being filled back-pressure by the way that boss 31 is arranged on counterweight rack 1
Install the space that counterweight rack top is not take up in the side of counterweight rack, more compact structure.It should be noted that convex
Platform 31 both can be continuously arranged on counterweight rack 1, can also on counterweight rack local setting.
Example IV
As shown in Figure 5 the present invention have backpressure device vibrating isolation system, with embodiment one the difference is that, counterweight platform
Frame 1 is equipped with installation passage 12；In backpressure device, connector 5 is that one end is fixed on the screw rod in substrate 7, back-pressure elastic element 4
The compressed spring collectively formed by the fixed equal pressing plate 9 of rubber spring and its both ends vulcanization, connector 5 are arranged in installation passage
In 12, run through counterweight rack 1 and back-pressure elastic element 4, the locking nut 11 being arranged using screw tip makes back-pressure elasticity member
4 one end of part acts on connector 5, and other end back-pressure acts on the top surface of counterweight rack 1, and compressed spring is to counterweight platform
The force direction of frame is contrary to the supporting force of counterweight rack with elastic supporting element.
Compared with embodiment one, in technical solution described in this example, due to constituting the rubber spring of back-pressure elastic element itself
With good damping characteristic, therefore it can also be considered as a kind of damping unit simultaneously.Theoretically, if rubber spring can mention
For enough dampings, damping unit can not also be additionally set again in the present invention in vibration isolator.
Embodiment five
As shown in Figure 6 the present invention have backpressure device vibrating isolation system, with example IV the difference is that, counterweight platform
1 two sides of frame are equipped with protrusion 31；In backpressure device, connector 5 is the screw rod with connecting flange 13, will be connected using fastener 15
Flange 13 is fixed together with metal anchorage 14 pre-buried in substrate 7, and connector 5 is fixed in substrate 7 by realization, back-pressure bullet
Property element 4 be compressed spring that helical steel springs are constituted, wherein the top of compressed spring is additionally provided with equal pressing plate 9, connector 5 and
Pressing plate 9 cooperates, and the locking nut 11 being arranged using screw tip is acted on 4 one end of back-pressure elastic element on connector 5, separately
One end back-pressure acts on the boss 31 in counterweight rack 1.It is altered to prevent back-pressure elastic element 4 from accident occurring in use
It is dynamic, the centering limited block 10 of back-pressure elastic element 4 is further respectively had on boss 31 and pressing plate 9.
Compared with example IV, by the way that boss 31 is arranged on counterweight rack 1, counterweight rack is arranged in backpressure device
Side, more compact structure are not take up the space on counterweight rack top；It can further, since being used between connector 5 and substrate 7
The maintenance replacement of the fixed form of fractionation, later period is also more convenient.
Embodiment six
As shown in Figure 7 the present invention have backpressure device vibrating isolation system, with example IV the difference is that, back-pressure bullet
Property element and vibration isolator are integrated among a shell 16, wherein the elastic supporting element 2 in vibration isolator is by a spiral steel bomb
Spring is constituted, and back-pressure elastic element is collectively constituted by four helical steel springs, 36, two damping units 8 and pressing plate 9, the damping
Device 8 is specially viscoelastic damping device, and connector 5 is passed through from the center of elastic supporting element, and four helical steel springs 36 are equal
It is even to be arranged in around connector 5.Shell 16 is solidly fixed with counterweight rack 1, and bearing member 18 is equipped with inside shell 16, described to hold
Central through hole is equipped in the middle part of power part, the size of central through hole should ensure that vibration isolator can pass through, and vibration isolator is by being turned up pad
Plate 19 is supported on bearing member 18, by connector 5, is acted also on back-pressure elastic element on bearing member 18 and is passed through load
Part acts on counterweight rack 1, and back-pressure elastic element to the force direction of counterweight rack and elastic supporting element to matching
The supporting force of weight rack is contrary.
In technical solution described in this example, damping unit can also be added in vibration isolator, such as can use spiral steel bomb
Spring constitutes complex spring together with rubber or elastane, may be suitable in the present invention, also the present invention claims
Protection scope among.Technical principle based on this example, in back-pressure elastic element compressed spring also can be set two, three,
Five even more, when the quantity of compressed spring is more than two, it is preferred that are evenly arranged compressed spring around connector.
Compared with example IV, technical solution biggest advantage described in this example is that, can be removed at any time on connector 5
Locking nut 11, the opening by back-pressure elastic element and elastic supporting element along 16 top of shell takes out, protects in this way in maintenance
It is very convenient when supporting；Further, since vibration isolator and backpressure device are all disposed in shell 16 in technical solution described in this example,
It is not take up any upper space of counterweight rack, therefore structure is extremely compact, space utilization rate is high.In application, industry is set
Standby or track structure is fixed on counterweight rack 1, such as shown in Fig. 7, and track structure 17 is mounted on counterweight rack 1
On, it can constitute a kind of floating ballast bed structure.
Embodiment seven
As shown in Figure 8 the present invention have backpressure device vibrating isolation system, with embodiment six the difference is that, counterweight platform
Reserved through hole 20 is set, and back-pressure elastic element and vibration isolator are arranged in reserved through hole, wherein the elasticity branch in vibration isolator on frame
Element is held to be made of a helical steel springs 2, back-pressure elastic element by a helical steel springs 36, multiple damping units 8 and
Pressing plate 9 collectively constitutes, and the damping unit 8 is specially fluid pressure type damping unit, is equipped with bearing member 18, load in reserved through hole 20
Part 18 is the boss with 1 integrated setting of counterweight rack, is equipped with central through hole in the middle part of the bearing member, the size of central through hole is answered
Guarantee that vibration isolator can pass through, elastic supporting element is supported on bearing member 18, passes through connector 5, back-pressure elastic element
It acts also on bearing member 18 and is acted on counterweight rack 1 by bearing member 18.
In application, apparatus for rotating or track structure are fixed on counterweight rack.Technical solution described in this example is except tool
Have outside all advantages of embodiment six, due in this example directly on counterweight rack integrated setting bearing member 18, be related to element
Less, structure is simpler, advantageously reduces cost, improves product service life.Certainly, based on technical principle described in this example,
Also the materials such as steel plate, stainless steel be can use bearing member is made and be fixed in the reserved through hole of counterweight rack again, it can also be with
Play same effect, also the present invention claims protection scope among.
Embodiment eight
As shown in Figure 9 the present invention have backpressure device vibrating isolation system, with embodiment seven the difference is that, counterweight platform
Two sides, which are correspondingly arranged, on frame 1 is mounted laterally slot 41 for accommodate vibration isolator, and elastic supporting element 2 is spiral steel bomb in vibration isolator
The complex spring that spring and elastane collectively constitute, elastic supporting element 2 are supported on the lower surface of bearing member 18, thus
It is supported on counterweight rack on elastic supporting element；In backpressure device, connector 5 is the link being fixed in substrate 7, back-pressure bullet
Property element 4 is made of steel spiral stretching spring, and one end of steel spiral stretching spring is articulated on connector 5, and the other end is articulated in
The pulling force being arranged on baffle 34 is adjusted on link 33, and the baffle 34 is located at the upper surface of bearing member 18, and back-pressure elastic element is logical
It crosses 34 back-pressure of baffle and makees power on bearing member 18, and then act on counterweight rack 1, and steel spiral stretching spring is to counterweight platform
The force direction of frame 1 is opposite with force direction of the elastic supporting element to counterweight rack.
Different from embodiment seven, back-pressure elastic element uses extension spring in this example, in addition, as elastic supporting element
Complex spring in elastane elasticity can be not only provided, damping can also be provided, therefore also can be considered damping
Device.Great advantage of the technical solution described in this example compared with embodiment seven be, all due to back-pressure elastic element and vibration isolator
The lower section of bearing member is set, therefore required spatial altitude is smaller, the thickness of counterweight rack can be set relatively thin, favorably
In saving space.In addition, taking since vibration isolator can carry out dress from the side of counterweight rack, the aperture at 8 center of bearing member is only needed
The dress that can be realized back-pressure elastic element 4 takes, therefore its bore size can be substantially reduced, and advantageously ensures that counterweight platform
The intensity of frame.It certainly, can also be by elastic supporting element and extension spring based on technical principle described in this example and embodiment six
It is integrated in a shell, shell is solidly fixed with counterweight rack, and elastic supporting element and extension spring are respectively and in shell
The supporting member of setting cooperates, and realizes bearing and back-pressure to counterweight rack, is also able to achieve good effect, is only given herein with text
Give explanation, also the present invention claims protection scope among.
Embodiment nine
The present invention has the vibrating isolation system of backpressure device as shown in Figure 10, and the difference with embodiment six is, the substrate
The specially steel frame 37 of 38 surface of ship deck fixed setting；In addition, counterweight rack 1 is specially steel plate and profile welding assembly
Made of frame structure, shell 16 and frame structure are welded and fixed integrally；In addition, the lower end of connector 5 is fixed on vibration isolator
Pedestal 39 on, pedestal 39 is fixedly linked by fastener 40 with steel frame 37.
Compared with embodiment six, in technical solution described in this example, connector 5 can take out together with vibration isolator and repair
Replacement, it is very convenient.
When wind and waves effect pontoon acutely rocks, ship power equipment is caused also inevitably to generate shaking,
Downward pressure load is born with the vibration isolator in the vibrating isolation system of backpressure device at this point, relying primarily on the present invention, utilizes back-pressure
Device bears pull-up load, it is ensured that the safety of power-equipment and the stabilization of vibrating isolation system overcome spot ship power and set
The characterisitic parameters such as system frequency when standby vibrating isolation system bears upward pulling force load-carrying ability deficiency, is difficult to cope with load change
Unstable, the insufficient problem of safety, therefore, the intrinsic frequency of vibrating isolation system of the present invention with backpressure device during the work time
Rate is also more reliable and more stable with vibration isolating effect.It is to be particularly noted that since the present invention is in the vibrating isolation system of backpressure device
Backpressure device be also provided simultaneously with elastic spacing function, can effectively avoid conventional rigid limit caused by vibrate short circuit problem,
The anti-vibration performance of vibration isolator can be given full play to, therefore greatly improves final vibration and noise reducing level, great number tested data table
Bright, it is even higher that final effect of vibration and noise reduction can be improved 20%.
The embodiment of the present invention understands technical principle of the invention primarily to facilitating, it is not limited to above-described embodiment
The content of record, the technology contents that above-described embodiment is recorded can also carry out cross-reference, be based on the technology of the present invention principle, ability
Field technique personnel technical solution described in above-described embodiment re-starts combination or using similar technique to some of them member
Part carry out simple replacement, if based on technical principle of the invention, all the present invention claims protection scope among.
Claims (15)
1. a kind of vibrating isolation system with backpressure device, including counterweight rack and vibration isolator, vibration isolator is located at substrate and counterweight platform
Between frame, counterweight rack is supported on vibration isolator, in vibration isolator be equipped with elastic supporting element, the elastic supporting element at least by
Metal coil spring is constituted, it is characterised in that further includes backpressure device, backpressure device includes back-pressure elastic element and connector, instead
Compression elasticity element one end acts on counterweight rack, and the other end acts on connector, connector and substrate or vibration isolator pedestal
Be connected, and back-pressure elastic element to the force direction of counterweight rack and elastic supporting element to the supporting force side of counterweight rack
To on the contrary, the back-pressure active force provided using back-pressure elastic element, realizes the preload of elastic supporting element.
2. the vibrating isolation system according to claim 1 with backpressure device, it is characterised in that the back-pressure elastic element packet
At least one extension spring is included, extension spring one end is connected with connector, and other end mounting acts on counterweight rack, and draws
It is contrary with supporting force of the elastic supporting element to counterweight rack to the force direction of counterweight rack to stretch spring.
3. the vibrating isolation system according to claim 1 with backpressure device, it is characterised in that back-pressure elastic element includes extremely
A few compressed spring, compressed spring one end back-pressure act on counterweight rack, and the other end acts on connector, connector with
Substrate or vibration isolator pedestal are connected, and compressed spring to the force direction of counterweight rack and elastic supporting element to counterweight
The supporting force of rack is contrary.
4. the vibrating isolation system according to claim 3 with backpressure device, it is characterised in that the compressed spring includes gold
Belong to the complex spring that spring, metal disc spring or high molecular material made of helical spring, high molecular material and metal are constituted.
5. the vibrating isolation system according to claim 3 with backpressure device, it is characterised in that compressed spring in backpressure device
Precommpression stroke be greater than the 110% of the maximum deflection downwards of counterweight rack under working condition.
6. the vibrating isolation system according to claim 3 with backpressure device, it is characterised in that the compressed spring setting two
It is evenly arranged around connector when a or more.
7. the vibrating isolation system according to claim 3 with backpressure device, it is characterised in that counterweight rack is equipped with installation
Channel, connector are arranged in installation passage.
8. the vibrating isolation system according to claim 3 with backpressure device, it is characterised in that back-pressure elastic element further includes
Equal pressing plate, equal pressing plate are placed in the end of compressed spring, and connector and equal pressing plate cooperate, and compressed spring back-pressure is acted on counterweight platform
On frame.
9. the vibrating isolation system according to claim 3 with backpressure device, it is characterised in that counterweight rack or/and connector
It is equipped with the centering limited block of back-pressure elastic element.
10. the vibrating isolation system according to claim 1,2 or 3 with backpressure device, it is characterised in that connector be screw rod,
Hook, otic placode or link with mount hole.
11. the vibrating isolation system according to claim 1,2 or 3 with backpressure device, it is characterised in that the vibration isolator or/
With in backpressure device be equipped with damping unit.
12. the vibrating isolation system according to claim 11 with backpressure device, it is characterised in that the damping unit includes
Fluid pressure type damping unit, viscous damping devices, electric eddy-current damping device, magnetorheological damping device and viscoelastic damping device.
13. the vibrating isolation system according to claim 1,2 or 3 with backpressure device, it is characterised in that counterweight rack includes
Plate made of armored concrete or metal material or frame structure.
14. the vibrating isolation system according to claim 1,2 or 3 with backpressure device, it is characterised in that set on counterweight rack
Reserved through hole is set, back-pressure elastic element and elastic supporting element are arranged in reserved through hole, bearing member are equipped in reserved through hole, is held
There are central through hole in the middle part of power part, the Assurance of Size elastic supporting element of central through hole can be passed through, elastic supporting element
It is supported on bearing member, back-pressure elastic element is acted also on bearing member and acted on counterweight rack by bearing member.
15. the vibrating isolation system according to claim 1,2 or 3 with backpressure device, it is characterised in that back-pressure elastic element
It being integrated among a shell with elastic supporting element, shell is solidly fixed with counterweight rack, and enclosure interior is equipped with bearing member,
There are central through hole in the middle part of bearing member, the Assurance of Size elastic supporting element of central through hole can be passed through, elastic bearing member
Part is supported on bearing member, and back-pressure elastic element is acted also on bearing member and acted on counterweight rack by bearing member.
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| CN108499272A (en) * | 2018-04-04 | 2018-09-07 | 江苏建筑职业技术学院 | A kind of environmental project atomization big gun main body mechanism based on lift adjustment technology |
| CN108644299B (en) * | 2018-05-25 | 2020-12-08 | 北京特种机械研究所 | Disc spring combined type magnetorheological damping shock absorber |
| CN110454662A (en) * | 2019-08-17 | 2019-11-15 | 徐州云颐无纺布制品有限公司 | A kind of verifying attachment for the mixed yarn that stability is high |
| CN110608260B (en) * | 2019-10-16 | 2024-05-24 | 上海工程技术大学 | Mass-adjustable vibration absorber for urban rail vehicle and vibration reduction principle |
| CN110647183B (en) * | 2019-10-16 | 2021-10-01 | 广东工业大学 | Vibration reduction method, device and equipment for high-precision positioning platform |
| CN111196436A (en) * | 2019-12-31 | 2020-05-26 | 国望智承(北京)振动控制技术有限公司 | High efficiency transportation antivibration packing box structure |
| CN114060455A (en) * | 2021-11-17 | 2022-02-18 | 同济大学 | Adjustable-quality integrated multi-power vibration absorber for inhibiting rail vehicle from shaking |
| CN114483866B (en) * | 2022-02-25 | 2022-11-25 | 浙江大学 | Electromagnetic damping coupled spring vibration isolator |
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