GB2491793A - An elevator buffer - Google Patents
An elevator buffer Download PDFInfo
- Publication number
- GB2491793A GB2491793A GB1218609.4A GB201218609A GB2491793A GB 2491793 A GB2491793 A GB 2491793A GB 201218609 A GB201218609 A GB 201218609A GB 2491793 A GB2491793 A GB 2491793A
- Authority
- GB
- United Kingdom
- Prior art keywords
- displacement member
- reservoir
- buffer
- hydraulic fluid
- container
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/282—Structure thereof
Landscapes
- Fluid-Damping Devices (AREA)
- Types And Forms Of Lifts (AREA)
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).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1006713.0A GB201006713D0 (en) | 2010-04-22 | 2010-04-22 | A buffer |
PCT/GB2011/050787 WO2011131986A2 (en) | 2010-04-22 | 2011-04-20 | A buffer |
Publications (3)
Publication Number | Publication Date |
---|---|
GB201218609D0 GB201218609D0 (en) | 2012-11-28 |
GB2491793A true GB2491793A (en) | 2012-12-12 |
GB2491793B GB2491793B (en) | 2015-02-25 |
Family
ID=42270656
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB1006713.0A Ceased GB201006713D0 (en) | 2010-04-22 | 2010-04-22 | A buffer |
GB1218609.4A Active GB2491793B (en) | 2010-04-22 | 2011-04-20 | A buffer |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GBGB1006713.0A Ceased GB201006713D0 (en) | 2010-04-22 | 2010-04-22 | A buffer |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN102985349B (en) |
GB (2) | GB201006713D0 (en) |
WO (1) | WO2011131986A2 (en) |
Families Citing this family (7)
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 |
CN111042689A (en) * | 2019-11-27 | 2020-04-21 | 扬州市江都永坚有限公司 | Special buffer for heavy hydraulic opening and closing device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1870827A (en) * | 1930-07-30 | 1932-08-09 | Westinghouse Electric & Mfg Co | Buffer |
US4015835A (en) * | 1974-08-21 | 1977-04-05 | R. Stahl Aufzuege Gmbh | Shock absorbers for elevators |
GB2143613A (en) * | 1983-07-11 | 1985-02-13 | Otis Elevator Co | Hydraulic buffer for elevators with air flow to remove contaminants |
WO2001089974A1 (en) * | 2000-05-25 | 2001-11-29 | Henning Gmbh | Hydraulic lift buffer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3731770A (en) * | 1971-05-19 | 1973-05-08 | Ace Controls | Adjustable shock absorber |
US4174098A (en) * | 1978-07-03 | 1979-11-13 | Ace Controls, Inc. | Shock absorber and mounting means therefor |
US5050712A (en) * | 1989-04-25 | 1991-09-24 | Enertrols, Inc. | Shock absorber |
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 |
-
2010
- 2010-04-22 GB GBGB1006713.0A patent/GB201006713D0/en not_active Ceased
-
2011
- 2011-04-20 CN CN201180020253.XA patent/CN102985349B/en active Active
- 2011-04-20 GB GB1218609.4A patent/GB2491793B/en active Active
- 2011-04-20 WO PCT/GB2011/050787 patent/WO2011131986A2/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1870827A (en) * | 1930-07-30 | 1932-08-09 | Westinghouse Electric & Mfg Co | Buffer |
US4015835A (en) * | 1974-08-21 | 1977-04-05 | R. Stahl Aufzuege Gmbh | Shock absorbers for elevators |
GB2143613A (en) * | 1983-07-11 | 1985-02-13 | Otis Elevator Co | Hydraulic buffer for elevators with air flow to remove contaminants |
WO2001089974A1 (en) * | 2000-05-25 | 2001-11-29 | Henning Gmbh | Hydraulic lift buffer |
Also Published As
Publication number | Publication date |
---|---|
CN102985349B (en) | 2015-08-12 |
WO2011131986A3 (en) | 2012-03-29 |
WO2011131986A2 (en) | 2011-10-27 |
GB201006713D0 (en) | 2010-06-09 |
GB2491793B (en) | 2015-02-25 |
GB201218609D0 (en) | 2012-11-28 |
CN102985349A (en) | 2013-03-20 |
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