CN104695321B - A kind of elastic gap formula viscous damper used on highway bridge - Google Patents

A kind of elastic gap formula viscous damper used on highway bridge Download PDF

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Publication number
CN104695321B
CN104695321B CN201510115955.6A CN201510115955A CN104695321B CN 104695321 B CN104695321 B CN 104695321B CN 201510115955 A CN201510115955 A CN 201510115955A CN 104695321 B CN104695321 B CN 104695321B
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CN
China
Prior art keywords
damping ring
piston
cylinder barrel
highway bridge
viscous damper
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Expired - Fee Related
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CN201510115955.6A
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Chinese (zh)
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CN104695321A (en
Inventor
潘威
朱铁增
张丽娟
吴晶
李旭丹
孙振华
杨建强
崔亚新
上官秀芳
马波
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Henan Vocational and Technical College of Communications
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Henan Vocational and Technical College of Communications
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Priority to CN201510115955.6A priority Critical patent/CN104695321B/en
Publication of CN104695321A publication Critical patent/CN104695321A/en
Application granted granted Critical
Publication of CN104695321B publication Critical patent/CN104695321B/en
Expired - Fee Related legal-status Critical Current
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges

Abstract

The present invention relates to a kind of elastic gap formula viscous damper used on highway bridge, piston is set with damping ring, damping ring adopts low modulus elastomeric material to make, damping ring is fixed on the outside of piston by securing member, piston rod is relative to the axially-movable of cylinder barrel, drive piston and the cavity inter-sync campaign between right-left seal guider of build-in damping ring on piston, extruding power consumption liquid flows through from the gap high speed between damping ring and casing wall, thus producing viscous shear stress and association compressive stress in gap, this compressive stress meeting compression damping ring, damping ring generation radial contraction is made to deform, respective clearance expansion improves antivibrator energy efficiency, avoid general Varied clearance formula damper designs difficulty of processing big, damping force bust, the problems such as antivibrator installation requirement is high.

Description

A kind of elastic gap formula viscous damper used on highway bridge
Technical field
The present invention relates to viscous damper design field, be specifically related to a kind of antivibrator, especially relate to a kind of elastic gap formula viscous damper used on highway bridge for reducing the effects such as highway bridge equipment deformation under oscillatory load effect.
Background technology
Typical viscous damper is divided into hole formula and clearance-type two class, ultimate principle is all deformation and the movement velocity by relative deformation between extraneous component being converted to the relative cylinder barrel of antivibrator inner carrier with speed of related movement, power consumption liquid in cylinder body is made to flow through narrow and small duct or gap at a high speed under squeezing action, produce bigger viscous shearing and shear displacemant, cause that power consumption liquid generates heat in a large number, it is achieved that building or equipment kinetic energy consume energy the conversion of internal energy of liquid in antivibrator.
Clearance-type antivibrator is divided into fixed gap formula and Varied clearance formula, and between fixed gap formula viscous damper casing wall and piston appearance, gap size remains definite value, does not change, and the turgor that its shortcoming is product hysteresis loop is poor, and energy efficiency is relatively low.Varied clearance formula viscous damper needs to make Machining of Curved Surface in piston appearance and casing wall, and the modeling of toroidal function is complicated, and processing technique difficulty is big, is difficult to keep constant product quality;Often there is obvious reduction in stepped clearance-type antivibrator hysteresis loop damping force when the piston speed of service is maximum, it is more difficult to meet " energy consuming curve should full " requirement;The most important thing is that described two class Varied clearance formula antivibrators exist visibility point dependency, namely when product is installed, piston must be positioned at clearance configurations central symmetry position and could meet and manufacture and design purpose, and the error requirements of construction substantially can not meet the error requirements that product is installed, therefore there is bigger problem in the application of building engineering field in above two series products.
Therefore, producing a kind of simple in construction, easy to operate, design is simple, work and operational efficiency are high, and damping is obvious, and processing is installed simple, energy efficiency is high, without the elastic gap formula viscous damper used on highway bridge of position correlation, has wide market prospect.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of simple in construction, easy to operate, design is simple, work and operational efficiency is high, damping substantially, processing install simple, energy efficiency is high, without the elastic gap formula viscous damper of use on highway bridge of position correlation.
The technical scheme is that and be achieved in that: a kind of elastic gap formula viscous damper used on highway bridge, including cylinder barrel, it is installed in cylinder barrel and piston rod, the left sealing guider being separately positioned on piston rod two ends and right sealing guider that the piston that moves axially along cylinder barrel and piston are connected as a single entity, it is filled in the power consumption liquid between left sealing guider and right sealing guider, described piston is set with damping ring, damping ring adopts low modulus elastomeric material to make, and damping ring is fixed on the outside of piston by securing member.
The transverse section of described inner cavity of cylinder is circular, the transverse section of described piston is circular, and the transverse section of piston rod is circular, and damping ring is sleeved on the outside of piston, being provided with annular gap between outer wall and the inner wall of cylinder of damping ring, the thickness in this gap is 1 millimeter to 5 millimeters.
The outside of described piston offers the pistion recess cooperated with damping ring, and the two ends of pistion recess are provided with the build-in flange cooperated with damping ring, and build-in flange offers securing member aperture, and securing member is arranged in securing member aperture.
The inner side of described damping ring is provided with the damping ring projection cooperated with piston, and the two ends of damping ring projection are provided with the build-in notch cooperated with piston, and damping ring projection offers the fixing aperture of damping ring, and securing member is arranged in the fixing aperture of damping ring.
The width of described damping ring is equal with the width of piston, and the diameter of damping ring is less than the internal diameter of cylinder barrel.
nullThe present invention has following good effect: first,Present configuration is simple,Easy to operate,Piston rod is relative to the axially-movable of cylinder barrel,Drive piston and the cavity inter-sync campaign between right-left seal guider of build-in damping ring on piston,Extruding power consumption liquid flows through from the gap high speed between damping ring and casing wall,Thus producing viscous shear stress and association compressive stress in gap,This compressive stress can compression damping ring,Damping ring generation radial contraction is made to deform,Respective clearance expands,Based on this mechanism,When the raising along with the speed of service,In gap, viscous power consumption flow rate of liquid increases,Compressive stress and compression increase accordingly,Gap also increases accordingly,In turn reduce the amplitude that power consumption flow rate of liquid increases,Also the amplitude that damping force increases just is significantly reduced,Thus increasing the turgor degree of hysteresis loop of knowing clearly,Improve antivibrator energy efficiency,Avoid general Varied clearance formula damper designs difficulty of processing big,Damping force bust,The problems such as antivibrator installation requirement is high.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the present invention.
Fig. 2 is the piston structure schematic diagram of the present invention.
Fig. 3 is the damping ring structural representation of the present invention.
Detailed description of the invention
As shown in Figure 1, 2, 3, a kind of elastic gap formula viscous damper used on highway bridge, including cylinder barrel 1, it is installed in cylinder barrel 1 and piston rod 3, the left sealing guider 6 being separately positioned on piston rod 3 two ends and right sealing guider 7 that the piston 2 that moves axially along cylinder barrel 1 and piston 2 are connected as a single entity, it is filled in the power consumption liquid 8 between left sealing guider 6 and right sealing guider 7, described piston 2 is set with damping ring 4, damping ring 4 adopts low modulus elastomeric material to make, and damping ring 4 is fixed on the outside of piston 2 by securing member 5.
The transverse section of described cylinder barrel 1 inner chamber is circular, the transverse section of described piston 2 is circular, and the transverse section of piston rod 3 is circular, and damping ring 4 is sleeved on the outside of piston 2, being provided with annular gap between outer wall and cylinder barrel 1 inwall of damping ring 4, the thickness in this gap is 1 millimeter to 5 millimeters.The outside of described piston 2 offers the pistion recess 9 cooperated with damping ring 4, the two ends of pistion recess 9 are provided with the build-in flange 10 cooperated with damping ring 4, offering securing member aperture 11 on build-in flange 10, securing member 5 is arranged in securing member aperture 11.The inner side of described damping ring 4 is provided with the damping ring projection 12 cooperated with piston 2, the two ends of damping ring projection 12 are provided with the build-in notch 13 cooperated with piston 2, offering the fixing aperture 14 of damping ring on damping ring projection 12, securing member 5 is arranged in the fixing aperture 14 of damping ring.The width of described damping ring 4 is equal with the width of piston 2, and the diameter of damping ring 4 is less than the internal diameter of cylinder barrel 1.
The present invention includes cylinder barrel 1, piston 2, piston rod 3, damping ring 4, tightening piece 5, left sealing guider 6, right sealing guider 7, power consumption liquid 8.Piston 2 is connected to piston rod 3, damping ring 4 is embedded in piston 2 outer ring, and it is fixed on piston by tightening piece 5, piston 2 and piston rod 3 and damping ring 4, tightening piece 5 integral installation is internal in cylinder barrel 1, and piston rod 3 is supported at both ends in left sealing guider 6 and right sealing guider 7, in the cavity between piston and sealing guider, it is filled with power consumption liquid 8.Damping ring 4 is made up of low modulus elastomeric material, is mounted on piston 2 outer ring;There is gap between damping ring and casing wall, be used as power consumption liquid communication gap.
Piston rod 3 is relative to the axially-movable of cylinder barrel 1, driving piston 2 and the cavity inter-sync campaign between left sealing guider 6 and right sealing guider 7 of the build-in damping ring 4 on piston 2, extruding power consumption liquid 8 flows through from the gap high speed between damping ring 4 and casing wall 1.Thus producing viscous shear stress and association compressive stress in gap, this compressive stress meeting compression damping ring 4, make damping ring 4 occur radial contraction to deform, respective clearance expands.Based on this mechanism, when the raising along with the speed of service, in gap, viscous power consumption flow rate of liquid increases, and compressive stress and compression increase accordingly, gap also increases accordingly, in turn reduce the amplitude that power consumption flow rate of liquid increases, also just significantly reduce the amplitude that damping force increases, thus increasing the turgor degree of hysteresis loop of knowing clearly, improve antivibrator energy efficiency, avoid general Varied clearance formula damper designs difficulty of processing big, damping force bust, the problems such as antivibrator installation requirement is high.

Claims (5)

1. the elastic gap formula viscous damper used on highway bridge, including cylinder barrel (1), the piston (2) being installed in cylinder barrel (1) and move axially along cylinder barrel (1), the piston rod (3) being connected as a single entity with piston (2), it is separately positioned on left sealing guider (6) and the right sealing guider (7) at piston rod (3) two ends, it is filled in the power consumption liquid (8) between left sealing guider (6) and right sealing guider (7), it is characterized in that: described piston (2) is set with damping ring (4), damping ring (4) adopts low modulus elastomeric material to make, damping ring (4) is fixed on the outside of piston (2) by securing member (5).
2. the elastic gap formula viscous damper used on highway bridge according to claim 1, it is characterized in that: the transverse section of described cylinder barrel (1) inner chamber is circle, the transverse section of described piston (2) is circular, the transverse section of piston rod (3) is circular, damping ring (4) is sleeved on the outside of piston (2), being provided with annular gap between outer wall and cylinder barrel (1) inwall of damping ring (4), the thickness in this gap is 1 millimeter to 5 millimeters.
3. the elastic gap formula viscous damper used on highway bridge according to claim 1, it is characterized in that: the outside of described piston (2) offers the pistion recess (9) cooperated with damping ring (4), the two ends of pistion recess (9) are provided with the build-in flange (10) cooperated with damping ring (4), offering securing member aperture (11) on build-in flange (10), securing member (5) is arranged in securing member aperture (11).
4. the elastic gap formula viscous damper used on highway bridge according to claim 1, it is characterized in that: the inner side of described damping ring (4) is provided with the damping ring projection (12) cooperated with piston (2), the two ends of damping ring projection (12) are provided with the build-in notch (13) cooperated with piston (2), offering the fixing aperture (14) of damping ring on damping ring projection (12), securing member (5) is arranged in the fixing aperture (14) of damping ring.
5. the elastic gap formula viscous damper used on highway bridge according to claim 1, it is characterised in that: the width of described damping ring (4) is equal with the width of piston (2), and the diameter of damping ring (4) is less than the internal diameter of cylinder barrel (1).
CN201510115955.6A 2015-03-17 2015-03-17 A kind of elastic gap formula viscous damper used on highway bridge Expired - Fee Related CN104695321B (en)

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CN201510115955.6A CN104695321B (en) 2015-03-17 2015-03-17 A kind of elastic gap formula viscous damper used on highway bridge

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Application Number Priority Date Filing Date Title
CN201510115955.6A CN104695321B (en) 2015-03-17 2015-03-17 A kind of elastic gap formula viscous damper used on highway bridge

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CN104695321A CN104695321A (en) 2015-06-10
CN104695321B true CN104695321B (en) 2016-07-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000282411A (en) * 1999-03-30 2000-10-10 Tokai Rubber Ind Ltd Rubber support device and construction method using same
KR20120095202A (en) * 2011-02-18 2012-08-28 주식회사 삼일테크 Bridge bearing including shear reinforced pad
CN102936874A (en) * 2012-10-29 2013-02-20 柳州欧维姆机械股份有限公司 Shear type rubber damper with cable fastening device
CN103243637B (en) * 2013-05-28 2015-09-23 招商局重庆交通科研设计院有限公司 For anti-seismic damper and the Antivibration block thereof of bridge
CN204491402U (en) * 2015-03-17 2015-07-22 河南交通职业技术学院 A kind of elastic gap formula viscous damper used on highway bridge

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Inventor after: Pan Wei

Inventor after: Ma Bo

Inventor after: Zhu Tiezeng

Inventor after: Zhang Lijuan

Inventor after: Wu Jing

Inventor after: Li Xudan

Inventor after: Sun Zhenhua

Inventor after: Yang Jianqiang

Inventor after: Cui Yaxin

Inventor after: Shangguan Xiu Fang

Inventor before: Pan Wei

Inventor before: Zhu Tiezeng

Inventor before: Zhang Lijuan

Inventor before: Wu Jing

Inventor before: Li Xudan

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160706

Termination date: 20170317