WO2003104675A3 - Vibration isolator - Google Patents

Vibration isolator Download PDF

Info

Publication number
WO2003104675A3
WO2003104675A3 PCT/IB2003/002149 IB0302149W WO03104675A3 WO 2003104675 A3 WO2003104675 A3 WO 2003104675A3 IB 0302149 W IB0302149 W IB 0302149W WO 03104675 A3 WO03104675 A3 WO 03104675A3
Authority
WO
WIPO (PCT)
Prior art keywords
reservoir
vibration isolator
diaphragms
port
housing
Prior art date
Application number
PCT/IB2003/002149
Other languages
French (fr)
Other versions
WO2003104675A2 (en
Inventor
Philippus Stephanus Heyns
Plooy Francois Nicolaas Du
Original Assignee
Boart Longyear Ltd
Univ Pretoria
Philippus Stephanus Heyns
Plooy Francois Nicolaas Du
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boart Longyear Ltd, Univ Pretoria, Philippus Stephanus Heyns, Plooy Francois Nicolaas Du filed Critical Boart Longyear Ltd
Priority to AU2003240160A priority Critical patent/AU2003240160A1/en
Priority to CA002489103A priority patent/CA2489103C/en
Publication of WO2003104675A2 publication Critical patent/WO2003104675A2/en
Publication of WO2003104675A3 publication Critical patent/WO2003104675A3/en

Links

Classifications

    • 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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/24—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the central part of the unit being supported by one element and both extremities of the unit being supported by a single other element, i.e. double acting mounting
    • 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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/26—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions
    • F16F13/264—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for acting dynamically on the walls bounding a working chamber

Abstract

The invention provides a vibration isolator (10) for minimising the transfer of vibration forces from a vibrating body to an isolated body (14). The vibration isolator (10) includes a housing (16) which comprises housing components (18, 20 and 22) resiliently connected to one another to define a first reservoir (30), a second reservoir (32) and a port (34). The port (34) connects the first reservoir (30) to the second reservoir (32) and is displaceable relative to the first and second reservoirs so as to vary the volume of the reservoirs in response to relative motion between the vibrating body and the isolated body (14) along an axis of the housing. A fluid mass is contained within the first reservoir (30), the second reservoir (32) and the port (34), and the vibration isolator (10) includes two tuning diaphragms (36 and 40) operable on the fluid mass. The stiffness of the tuning diaphragms (36 and 40) is adjustable by varying the pressure within chambers (38 and 40) adjacent these diaphragms.
PCT/IB2003/002149 2002-06-07 2003-06-06 Vibration isolator WO2003104675A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003240160A AU2003240160A1 (en) 2002-06-07 2003-06-06 Vibration isolator
CA002489103A CA2489103C (en) 2002-06-07 2003-06-06 Vibration isolator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2002/4586 2002-06-07
ZA200204586 2002-06-07

Publications (2)

Publication Number Publication Date
WO2003104675A2 WO2003104675A2 (en) 2003-12-18
WO2003104675A3 true WO2003104675A3 (en) 2004-03-11

Family

ID=29737379

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/002149 WO2003104675A2 (en) 2002-06-07 2003-06-06 Vibration isolator

Country Status (3)

Country Link
AU (1) AU2003240160A1 (en)
CA (1) CA2489103C (en)
WO (1) WO2003104675A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004111489A2 (en) 2001-09-26 2004-12-23 Bell Helicopter Textron Inc. Piezoelectric liquid inertia vibration eliminator
US20050217954A1 (en) * 2004-03-31 2005-10-06 Hindle Timothy A Viscous isolation and damping strut utilizing a fluid mass effect
CN1333181C (en) * 2005-04-22 2007-08-22 清华大学 Universal air servo acceleration damper
WO2010071649A1 (en) 2008-12-18 2010-06-24 Bell Helicopter Textron Inc. Method and apparatus for improved vibration isolation
CA2754205C (en) 2009-03-12 2015-05-19 Bell Helicopter Textron Inc. Method and apparatus for improved vibration isolation
US8882091B2 (en) 2011-11-11 2014-11-11 Textron Innovations Inc. Vibration isolation system
CN109253064B (en) * 2017-07-12 2024-03-29 国家电投集团科学技术研究院有限公司 Pre-compression type pulse buffer applied to injection system
CN113682246B (en) * 2021-09-26 2023-04-14 东风汽车集团股份有限公司 Tunable vibrating block structure

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416445A (en) * 1978-10-13 1983-11-22 Imperial Clevite Inc. Viscous spring damper
JPS62167949A (en) * 1986-01-20 1987-07-24 Bridgestone Corp Vibration isolator
US4811919A (en) * 1987-08-06 1989-03-14 Lord Corporation Volume compensated fluid mount
EP0537927A1 (en) * 1991-10-15 1993-04-21 Lord Corporation Fluid mount with active vibration control
US5762295A (en) * 1996-02-23 1998-06-09 Lord Corporation Dynamically optimized engine suspension system
US6378851B1 (en) * 2000-10-25 2002-04-30 Lord Corporation Fluid and elastomer apparatus with discrete volume compensator and secondary compliance
US6394432B1 (en) * 1998-06-10 2002-05-28 Lord Corporation Vibration and/or shock absorbing devices and compensator elements utilized therein
US6431530B1 (en) * 2000-05-23 2002-08-13 Bell Helicopter Textron, Inc. Vertical liquid inertia vibration isolator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236607A (en) 1979-02-26 1980-12-02 Textron, Inc. Vibration suppression system
US5788029A (en) 1993-08-18 1998-08-04 Bell Helicopter Vibration isolation system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416445A (en) * 1978-10-13 1983-11-22 Imperial Clevite Inc. Viscous spring damper
JPS62167949A (en) * 1986-01-20 1987-07-24 Bridgestone Corp Vibration isolator
US4811919A (en) * 1987-08-06 1989-03-14 Lord Corporation Volume compensated fluid mount
EP0537927A1 (en) * 1991-10-15 1993-04-21 Lord Corporation Fluid mount with active vibration control
US5762295A (en) * 1996-02-23 1998-06-09 Lord Corporation Dynamically optimized engine suspension system
US6394432B1 (en) * 1998-06-10 2002-05-28 Lord Corporation Vibration and/or shock absorbing devices and compensator elements utilized therein
US6431530B1 (en) * 2000-05-23 2002-08-13 Bell Helicopter Textron, Inc. Vertical liquid inertia vibration isolator
US6378851B1 (en) * 2000-10-25 2002-04-30 Lord Corporation Fluid and elastomer apparatus with discrete volume compensator and secondary compliance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 004 (M - 657) 8 January 1988 (1988-01-08) *

Also Published As

Publication number Publication date
WO2003104675A2 (en) 2003-12-18
CA2489103C (en) 2009-03-31
AU2003240160A1 (en) 2003-12-22
AU2003240160A8 (en) 2003-12-22
CA2489103A1 (en) 2003-12-18

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