WO2011131986A3 - An elevator buffer - Google Patents

An elevator buffer Download PDF

Info

Publication number
WO2011131986A3
WO2011131986A3 PCT/GB2011/050787 GB2011050787W WO2011131986A3 WO 2011131986 A3 WO2011131986 A3 WO 2011131986A3 GB 2011050787 W GB2011050787 W GB 2011050787W WO 2011131986 A3 WO2011131986 A3 WO 2011131986A3
Authority
WO
WIPO (PCT)
Prior art keywords
displacement
reservoir
buffer
hydraulic fluid
container
Prior art date
Application number
PCT/GB2011/050787
Other languages
French (fr)
Other versions
WO2011131986A2 (en
Inventor
Chee Hong Ng
Edward Charles Stroud
Terence David Williams
Original Assignee
T A Savery And Co Ltd
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
Priority to GB1006713.0 priority Critical
Priority to GBGB1006713.0A priority patent/GB201006713D0/en
Application filed by T A Savery And Co Ltd filed Critical T A Savery And Co Ltd
Publication of WO2011131986A2 publication Critical patent/WO2011131986A2/en
Publication of WO2011131986A3 publication Critical patent/WO2011131986A3/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/28Buffer-stops for cars, cages, or skips
    • B66B5/282Structure thereof

Abstract

A buffer (10) comprises a casing (11) defining a hollow container for hydraulic fluid; a hollow, hydraulic fluid reservoir adjacent to the container; a displacement member (18) extending between the exterior of the buffer and the interior of the reservoir via a first aperture (19) in the reservoir; and a spring (16) acting between the displacement member and the remainder of the buffer (10). The displacement member (18) is moveable inside the reservoir between a first position in which the displacement member (18) is relatively extended on the exterior of the casing (11); and a second position in which the displacement member (19) is relatively retracted, inside the reservoir, the spring (16) urging the displacement member (18) towards the first position. The reservoir includes one or more further apertures (28) via which on movement of the displacement member (18) from the first position to the second position hydraulic fluid flows from the reservoir to the container in a manner damping movement of the displacement member (18).
PCT/GB2011/050787 2010-04-22 2011-04-20 A buffer WO2011131986A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1006713.0 2010-04-22
GBGB1006713.0A GB201006713D0 (en) 2010-04-22 2010-04-22 A buffer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB201218609A GB2491793B (en) 2010-04-22 2011-04-20 A buffer
CN201180020253.XA CN102985349B (en) 2010-04-22 2011-04-20 Energy disperser

Publications (2)

Publication Number Publication Date
WO2011131986A2 WO2011131986A2 (en) 2011-10-27
WO2011131986A3 true WO2011131986A3 (en) 2012-03-29

Family

ID=42270656

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/050787 WO2011131986A2 (en) 2010-04-22 2011-04-20 A buffer

Country Status (3)

Country Link
CN (1) CN102985349B (en)
GB (2) GB201006713D0 (en)
WO (1) WO2011131986A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104803253B (en) * 2015-04-27 2017-03-22 杜志刚 Elevator buffer brake device
CN106395549A (en) * 2016-10-28 2017-02-15 成都聚智工业设计有限公司 Elevator buffer
CN110446677B (en) * 2017-03-30 2020-12-01 三菱电机株式会社 Hydraulic buffer for elevator
CN107686034B (en) * 2017-08-25 2019-04-02 辽宁工程技术大学 A kind of elevator hydraulic damping device
CN109368439B (en) * 2018-08-29 2020-10-23 安徽迅立达电梯有限公司 Novel hydraulic elevator
CN110877847A (en) * 2019-10-31 2020-03-13 孙阎强 Intelligent manufacturing elevator is with buffering foundation ditch

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1870827A (en) * 1930-07-30 1932-08-09 Westinghouse Electric & Mfg Co Buffer
US3731770A (en) * 1971-05-19 1973-05-08 Ace Controls Adjustable shock absorber
US4015835A (en) * 1974-08-21 1977-04-05 R. Stahl Aufzuege Gmbh Shock absorbers for elevators
US4174098A (en) * 1978-07-03 1979-11-13 Ace Controls, Inc. Shock absorber and mounting means therefor
GB2143613A (en) * 1983-07-11 1985-02-13 Otis Elevator Co Hydraulic buffer for elevators with air flow to remove contaminants
US5050712A (en) * 1989-04-25 1991-09-24 Enertrols, Inc. Shock absorber
WO2001089974A1 (en) * 2000-05-25 2001-11-29 Henning Gmbh Hydraulic lift buffer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4992556B2 (en) * 2007-06-04 2012-08-08 三菱電機株式会社 Elevator oil-filled shock absorber
CN201217591Y (en) * 2008-05-08 2009-04-08 河北东方富达机械有限公司 Oil hydraulic buffer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1870827A (en) * 1930-07-30 1932-08-09 Westinghouse Electric & Mfg Co Buffer
US3731770A (en) * 1971-05-19 1973-05-08 Ace Controls Adjustable shock absorber
US4015835A (en) * 1974-08-21 1977-04-05 R. Stahl Aufzuege Gmbh Shock absorbers for elevators
US4174098A (en) * 1978-07-03 1979-11-13 Ace Controls, Inc. Shock absorber and mounting means therefor
GB2143613A (en) * 1983-07-11 1985-02-13 Otis Elevator Co Hydraulic buffer for elevators with air flow to remove contaminants
US5050712A (en) * 1989-04-25 1991-09-24 Enertrols, Inc. Shock absorber
WO2001089974A1 (en) * 2000-05-25 2001-11-29 Henning Gmbh Hydraulic lift buffer

Also Published As

Publication number Publication date
GB2491793B (en) 2015-02-25
WO2011131986A2 (en) 2011-10-27
CN102985349B (en) 2015-08-12
GB201006713D0 (en) 2010-06-09
GB2491793A (en) 2012-12-12
GB201218609D0 (en) 2012-11-28
CN102985349A (en) 2013-03-20

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