CN202176028U - Axially limited damper - Google Patents

Axially limited damper Download PDF

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Publication number
CN202176028U
CN202176028U CN2011202316956U CN201120231695U CN202176028U CN 202176028 U CN202176028 U CN 202176028U CN 2011202316956 U CN2011202316956 U CN 2011202316956U CN 201120231695 U CN201120231695 U CN 201120231695U CN 202176028 U CN202176028 U CN 202176028U
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CN
China
Prior art keywords
damper
stopping
cap
axial limiting
rubber
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Expired - Lifetime
Application number
CN2011202316956U
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Chinese (zh)
Inventor
唐璐
宁响亮
许明杰
韩鹏飞
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Zhuzhou Times New Material Technology Co Ltd
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Zhuzhou Times New Material Technology Co Ltd
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Priority to CN2011202316956U priority Critical patent/CN202176028U/en
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Publication of CN202176028U publication Critical patent/CN202176028U/en
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Abstract

The utility model discloses an axially limited damper, comprising a damper and a limiting cylinder, wherein limiting devices are arranged at the both ends of the limiting cylinder for limiting the damper when the travel of the damper exceeds the designed value; the limiting devices are arranged on the bottom of the both ends of the limiting cylinder, respectively; holes are formed on the limiting devices; a piston rod of the damper passes through a preformed hole of the limiting device; and a limiting block is mounted at one end of the piston rod in the limiting cylinder; and when the travel of the damper exceeds the designed travel, the damper is limited through compression of the limiting block and the limiting devices on the two sides. The axially limited damper is functional in improving dynamic response of a structure and generating a limiting resistance to excess displacement of the structure; and in comparison with the prior art, the axially limited damper is simple in structure and convenient in mounting, and can provide a larger limiting force.

Description

A kind of axial limiting damper
Technical field
The utility model relates to a kind of passive energy dissipation device, is the damper that a kind of set inside has limit element specifically, and stopping means is used to provide damper shaft to the spacing power of static(al), belongs to the vibration control of civil engineering structure field.
Background technology
The engineering structures vibration control technology has been broken through the method for designing of traditional passive resistance formula; Subtract isolation mounting and adjust dynamic Characteristics of Structure or structure is applied external force and resist the external load effect through on works, installing, thereby to alleviate structural damage and the performance of combating a natural disaster that improves structure through extra power.
The engineering structures vibration isolation comprises various Passive Control, ACTIVE CONTROL, half ACTIVE CONTROL, mixes the Based Intelligent Control of controlling and constantly obtaining in recent years paying attention to.The instance of domestic and international project structure applications vibration control technology has demonstrated its significant effectiveness in vibration suppression, social benefit and economic benefit.The Passive Control technology is relatively ripe like the research of shock insulation and passive energy dissipation (comprise and adopt viscous damper and metal damper etc.), and enters into practical stage.And initiatively, half initiatively, mix control and Based Intelligent Control especially ACTIVE CONTROL because its cost and maintenance cost is higher, system reliability is relatively low and some other key technical problem has to be solved and seldom be applied to actual engineering.But compare with Passive Control, initiatively, half ACTIVE CONTROL, mix the complexity that control and Based Intelligent Control more can be competent at environment and task, therefore, this type of technology all is the focus that the researcher pays close attention to all the time.
Have to be noted that the height uncertainty of external loads characteristic and intensity level, the variation non-linear and material property during one's term of military service of the material of agent structure own etc., make original design scheme can not satisfy function of use and safe requirement probably.At the load action of ultra expection, such as violent earthquake, extreme wind load etc., the stroke of damper possibly exceed design load, brings damage, the vibration damping inefficacy of damper thus and then causes structural damage.Simultaneously, damper is difficult to produce damping action for the low speed static load that is caused by reasons such as variations in temperature, car brakeings and insensitive, and therefore, damper might exceed the distortion of its extreme displacement amount in the case, thereby is destroyed.The viscous damper of exploitation is not considered its adverse effect after overtravel mostly both at home and abroad at present.
The patent No. like application before the applicant is 201010293526.9; Patent name is " a kind of viscous damping limit method and a viscous damper with stopper "; The main technical points of this patent comprises conventional viscous damper; Side at the viscous damper of routine is provided with a stopping means between left earrings and the auris dextra ring, carry out spacing when distortion surpasses design runlength to the viscous damper static load through stopping means.Described stopping means is the elastic caoutchouc block structure; A piston rod of elastic block rubber structure and viscous damper links together; And can be when being arranged on viscous damper static load distortion and surpassing design runlength, the compression through elastic block rubber plays position-limiting action, has dynamic response that improves structure and the effect that displacement produces spacing resistance to the structure excess; Simple in structure, practiced thrift cost and installing space.The described stopping means of this patent is the elastic caoutchouc block structure, and this elastic caoutchouc block structure is to link together with piston rod of viscous damper, receives the restriction of piston rod size, bigger spacing power can't be provided, and the scope of application is viscous damper.
The applicant feels to be necessary damper is improved, and has obtained substantial progress and achievement through during this period of time test.
The utility model content
The purpose of the utility model patent is exactly in order to overcome the defective that above-mentioned prior art exists, and provide a kind of and be applicable to more that polymorphic type damper, spacing power are bigger, the wider tape spool general and simple in structure of stiffness variation is to the stopping means damper.Such damper not only can provide essential damping force, and the huge energy of the outside input structure that dissipates can also provide spacing power, to prevent the displacement of structure excess.
For reaching above purpose; The utility model is realized through following technical scheme: a kind of axial limiting damper comprises damper and spacing cylinder body, wherein; Two ends are provided with stopping means in described spacing cylinder body, carry out spacing when through stopping means the damper stroke being surpassed design load; Described stopping means can be the superimposed body of rubber or rubber and steel plate; It also can be other flexible member; As any in disk spring, helical steel springs or the air spring or several kinds the combined elastic member, stopping means is positioned over the bottom at the two ends of spacing cylinder body respectively, offers hole on the stopping means; The piston rod of damper is passed the reserving hole of stopping means; And the piston rod end in spacing cylinder body installs limited block, can be when the damper stroke surpass design runlength, and the compression of the stopping means through limited block and both sides plays position-limiting action; Physical dimension through prescription, rubber and the steel plate of rubber size in the adjustment stopping means with or the material of disk spring, the method for size, change the performance of stopping means.
It is thus clear that the stopping means of the utility model does not contact with piston rod, do not receive the restriction of piston rod size, bigger spacing power can be provided under equal volume; Stopping means use rubber or rubber and metalwork superimposed body or, make the utility model can adapt to more conditions, the stiffness variation of wider scope is provided; The stopping means of the utility model can also be applied in other and become on the damper except being applied on the viscous damper, and the method that solves spacing problem is provided for more eurypalynous damper.
Description of drawings
Fig. 1 is the structural representation of an embodiment of utility model.
The specific embodiment
To combine specific embodiment and accompanying drawing that the utility model is done further description below.
Embodiment one
The utility model axial limiting damper as shown in Figure 1; Comprise viscous damper; At the additional spacing cylinder body 9 of a side of the viscous damper of routine; Spacing cylinder body 9 two ends are respectively arranged with left limit device 8 and right limit device 11, carry out spacing when distortion surpasses design runlength to viscous damper through stopping means.Described stopping means is the superimposed body of rubber and steel plate, and superimposed body links together with right end cap and auris dextra ring respectively, and can be when viscous damper distortion surpasses design runlength, and the compression through superimposed body plays position-limiting action.
The utility model is in the design runlength of viscous damper, and just viscous damper works, and gives birth to damping force and dissipation energy through the reversing current movable property of resisting medium 4 in resistance cylinders 5, and described resisting medium 4 is full-bodied dimethicone.In the case, left limit device 8, right limit device 11 do not contact with limited block 10, and stopping means compressive strain does not take place produces spacing power.When viscous damper received tensile force, piston rod 2 was to left movement, and when malformation surpassed design runlength, limited block 10 contacted with left limit device 8, and left limit device 8 is compressed distortion and produces resistance to the right, so play the position-limiting action of draw direction; In like manner, when viscous damper is compressed power, piston rod 2 moves right, and when malformation surpassed design runlength, limited block 10 contact with right limit device 11, and right limit device 11 is compressed and is out of shape and generation resistance left, plays the position-limiting action of compression direction.
The concrete structure of the utility model is as shown in Figure 1, and it includes left earrings 1, piston rod 2, left end cap 3, resisting medium 4, resistance cylinders 5, piston 6, right end cap 7, left limit device 8, spacing cylinder body 9, limited block 10, right limit device 11, auris dextra ring 12.Described left earrings 1 is connected with piston rod 2 left ends; Described piston 6 is connected with piston rod 2 middle parts; And radially be arranged at resistance cylinders 5 inside; Described left end cap 3, right end cap 7 are arranged at the left and right end portions of resistance cylinders respectively, and described resisting medium 4 is arranged in the confined space that left end cap, right end cap and resistance cylinders form.It is characterized in that; Spacing cylinder body 9 two ends at damper are provided with a stopping means respectively---left limit device 8 and right limit device 11; When damper low speed static deflection surpassed design runlength, the compression through 10 pairs of left limit devices of limited block 8 and right limit device 11 played position-limiting action.Described spacing cylinder body 9 is connected with resistance cylinders 5; Described auris dextra ring 12 is connected with spacing cylinder body 9; Described left limit device 8, be arranged at the two ends of spacing cylinder body 9 with right limit device 11; Be connected with auris dextra ring 12 with right end cap 7 respectively, described limited block 10 is connected with piston rod 2 right-hand members in extending to spacing cylinder body 9.The requirement of spacing rigidity of structure and spacing displacement is satisfied in the making of described left limit device 8 and right limit device 11.
In the design runlength of viscous damper, the damper of the utility model is the same with common damper, gives birth to damping force and dissipation energy through the reversing current movable property of resisting medium.In the case, left limit device 8, right limit device 11 do not contact with limited block 10, and stopping means compressive strain does not take place produces spacing power.When damper received tensile force, piston rod 2 was to left movement, and when malformation surpassed design runlength, limited block 10 contacted with left limit device 8, and left limit device 8 is compressed distortion and produces resistance to the right, so play the position-limiting action of draw direction; In like manner, when damper is compressed power, piston rod 5 moves right, and when malformation surpassed design runlength, limited block 10 contact with right limit device 11, and right limit device 11 is compressed and is out of shape and generation resistance left, plays the position-limiting action of compression direction.
The resistance of stopping means and loading velocity are irrelevant, and be only relevant with locations of structures and deformation extent.In order to guarantee that effective deformation is controlled in the scope of design, the rigidity of stopping means can be according to the design Selection that concerns of load and distortion.
Stopping means described in the present embodiment is the superimposed body of rubber or rubber and steel plate, and rubber and steel plate can be made into one through sulfuration or bonding way, and the superimposed body internal openings of described rubber and rubber and steel plate is also filled other material; Also can adopt metal spring with buffering power consumption etc.; As any in disk spring, helical steel springs or the air spring or several kinds the combined elastic member; Can make damper still have energy dissipation capacity preferably in the spacing performance that improves stopping means simultaneously in the overtravel stage; Described stopping means is connected fixing with damper through thread connection, welding, riveted joint or bonding way, and can under the compression of limited block and end cap, earrings and limited block, produce spacing power.
Based on the know-why of the utility model, stopping means can also adopt other flexible member, can realize good effect.
The utlity model has dynamic response that improves structure and the effect that displacement produces spacing resistance to the structure excess.Spacing technology to existing damper is improved, and mainly is to have changed the technology that the stopping means of existing damper is connected with moving components such as piston rod or built-in cylinder bodies, and structure is simpler.Increase effective contact area of stopping means, under the identical situation of volume, bigger spacing power can be provided, under the identical situation of spacing power, can reduce the volume of stopping means.Stopping means and earrings, end cap can be connected through securing member, helicitic texture, riveted joint or multiple mode such as bonding, install more convenient.Damping system of the utility model and caging system are to work alone, and be non-interfering, can satisfy the damping energy dissipation and the spacing requirement of damper well.

Claims (10)

1. an axial limiting damper comprises damper and spacing cylinder body, it is characterized in that, two ends are provided with stopping means in described spacing cylinder body, carries out spacing when through stopping means the damper stroke being surpassed design load; Stopping means is positioned over the bottom at the two ends of spacing cylinder body respectively; Offer hole on the stopping means; The piston rod of damper is passed the reserving hole of stopping means; And the piston rod end in spacing cylinder body installs limited block, can be when the damper stroke surpass design runlength, and the compression of the stopping means through limited block and both sides plays position-limiting action.
2. axial limiting damper according to claim 1 is characterized in that: described stopping means is the superimposed body of rubber or rubber and steel plate.
3. axial limiting damper according to claim 1 is characterized in that: described stopping means is the elastic component of the one or more combination in disk spring, helical steel springs or the air spring.
4. an axial limiting damper comprises left earrings, auris dextra ring, left end cap, right end cap, piston rod, piston, resistance cylinders, resisting medium, spacing cylinder body, limited block; Described left earrings is connected with the piston rod left end; Described piston is connected with the piston rod middle part; And radially be arranged at resistance cylinders inside; Described left end cap, right end cap are arranged at the left and right end portions of resistance cylinders respectively, and described resisting medium is arranged in the confined space of left end cap, right end cap and resistance cylinders composition; It is characterized in that the spacing cylinder body two ends of said damper are provided with a stopping means respectively; Described spacing cylinder body is connected with resistance cylinders; Described auris dextra ring is connected with spacing cylinder body; Described stopping means is arranged at the two ends of spacing cylinder body, is connected with the auris dextra ring with right end cap respectively, and the described limited block piston rod right-hand member interior with extending to spacing cylinder body is connected.
5. axial limiting damper according to claim 4; It is characterized in that: described stopping means is connected fixing with damper through thread connection, welding, riveted joint or bonding way, and can under the compression of limited block and end cap, earrings and limited block, produce spacing power.
6. axial limiting damper according to claim 5 is characterized in that: described stopping means is connected through securing member, helicitic texture, riveted joint or bonding way with earrings, end cap.
7. axial limiting damper according to claim 6 is characterized in that: described stopping means is the superimposed body of rubber, rubber and steel plate.
8. axial limiting damper according to claim 7 is characterized in that: said rubber and steel plate are bonded into one through sulfuration, manual bonding way.
9. axial limiting damper according to claim 8 is characterized in that: the superimposed body internal openings of described rubber and rubber and steel plate.
10. axial limiting damper according to claim 6 is characterized in that: described stopping means is the elastic component of the one or more combination in disk spring, helical steel springs or the air spring.
CN2011202316956U 2011-07-04 2011-07-04 Axially limited damper Expired - Lifetime CN202176028U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912879A (en) * 2012-11-06 2013-02-06 沈阳建筑大学 Sealing plate and sealing hole viscous damper
CN104695577A (en) * 2013-12-06 2015-06-10 贵州省交通规划勘察设计研究院股份有限公司 Liquid viscoelastic damper
CN106438807A (en) * 2016-10-18 2017-02-22 武汉东九永环工程技术有限公司 Rod type solid particle friction damper
CN106741588A (en) * 2016-12-08 2017-05-31 中国人民解放军海军工程大学 Composite splint device and its modeling method between the double shells side of a ship of quiet low dynamic stiffness high
CN108222307A (en) * 2018-01-15 2018-06-29 东南大学 One kind can make structure realize self-centering damper

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912879A (en) * 2012-11-06 2013-02-06 沈阳建筑大学 Sealing plate and sealing hole viscous damper
CN104695577A (en) * 2013-12-06 2015-06-10 贵州省交通规划勘察设计研究院股份有限公司 Liquid viscoelastic damper
CN106438807A (en) * 2016-10-18 2017-02-22 武汉东九永环工程技术有限公司 Rod type solid particle friction damper
CN106741588A (en) * 2016-12-08 2017-05-31 中国人民解放军海军工程大学 Composite splint device and its modeling method between the double shells side of a ship of quiet low dynamic stiffness high
CN108222307A (en) * 2018-01-15 2018-06-29 东南大学 One kind can make structure realize self-centering damper

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Granted publication date: 20120328