WO2008065706A1 - Amortisseur d'ascenseur - Google Patents

Amortisseur d'ascenseur Download PDF

Info

Publication number
WO2008065706A1
WO2008065706A1 PCT/JP2006/323644 JP2006323644W WO2008065706A1 WO 2008065706 A1 WO2008065706 A1 WO 2008065706A1 JP 2006323644 W JP2006323644 W JP 2006323644W WO 2008065706 A1 WO2008065706 A1 WO 2008065706A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
coil spring
shock absorber
base cylinder
return coil
Prior art date
Application number
PCT/JP2006/323644
Other languages
English (en)
Japanese (ja)
Inventor
Mitsuyoshi Imura
Original Assignee
Mitsubishi Electric Corporation
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 Mitsubishi Electric Corporation filed Critical Mitsubishi Electric Corporation
Priority to KR1020097008035A priority Critical patent/KR100975189B1/ko
Priority to JP2008546847A priority patent/JPWO2008065706A1/ja
Priority to PCT/JP2006/323644 priority patent/WO2008065706A1/fr
Priority to CN2006800564258A priority patent/CN101541659B/zh
Priority to EP06833448.1A priority patent/EP2088111A4/fr
Publication of WO2008065706A1 publication Critical patent/WO2008065706A1/fr

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

Definitions

  • This invention is arranged at the bottom of the hoistway pit, and when an elevator force or counterweight goes down the lowermost floor due to some abnormal cause and descends to the hoistway pit, the impact is reduced and the safety is ensured.
  • the present invention relates to an elevator shock absorber to be stopped.
  • An elevator shock absorber is a safety device that reduces the impact and stops safely when the elevator car or counterweight goes down the lower floor for some reason and descends to the hoistway pit. It is.
  • a multi-stage hydraulic shock absorber is composed of a base cylinder filled with hydraulic oil and a multi-stage plunger that enters the base cylinder and is sequentially formed in a small diameter and configured to expand and contract in the axial direction.
  • a hydraulic shock absorber configured to generate a buffer function due to a pressure difference caused by the movement of hydraulic oil causes at least two or more stages of the plunger to move to the base cylinder or In addition to entering the lower plungers simultaneously, the fluid resistance changes with the penetration depth for each of the at least two or more plungers.
  • a return coil spring is arranged in each stage (see, for example, Patent Document 1).
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2004-324879
  • the plunger and the stroke of each stage are as large as several meters even though the plunger is configured in multiple stages.
  • the contact height of the spring increases.
  • the height of the return coil spring after the shock absorber operation (after compression) must naturally be equal to or greater than the contact height, and the length of the plunger has increased accordingly.
  • the overall height of the shock absorber is increased, and the merit of using a multi-stage system can be maximized.
  • the present invention has been made to solve the above-described problems, and it is possible to reduce the overall height of the shock absorber while ensuring an equivalent stroke, thereby reducing the total height of the shock absorber. It is possible to provide an elevator shock absorber that can reduce assembly and improve assembly and installation.
  • a base cylinder filled with hydraulic oil and a plurality of stages that enter the base cylinder and are sequentially formed in a small diameter and extendable in the axial direction.
  • the plunger of each stage enters the base cylinder or the plunger of the lower stage, it is configured to generate a buffer function due to the pressure difference accompanying the movement of the hydraulic oil, and is arranged at the bottom of the hoistway pit.
  • At least two or more stages of plungers enter the base cylinder or lower plunger at the same time, and at least two or more stages of plungers are configured to change the! / ⁇ fluid resistance with the depth of entry.
  • each plunger is provided with a return coil spring that returns each compressed plunger to an expanded state before compression.
  • the return coil spring that returns the plunger that enters the base cylinder has a large diameter and is disposed outside the plunger and between the upper part of the plunger and the upper part of the base cylinder.
  • the return coil spring that returns the penetrating upper plunger has a small diameter and the lower bra Inside the plunger and between the lower part of the upper plunger and the bottom part of the lower plunger. When each plunger is extended, the smaller return coil spring is located inside the larger return coil spring. Are arranged.
  • the present invention it is possible to obtain a multistage hydraulic shock absorber capable of shortening the height of the entire shock absorber while ensuring an equivalent stroke.
  • shortening the overall height of the shock absorber can reduce costs and improve assembly and installation.
  • the floor of the hoistway can be made shallower than the conventional one, the construction cost of the hoistway can be reduced.
  • FIG. 1 is a cross-sectional configuration diagram showing a state when an elevator shock absorber according to Embodiment 1 of the present invention is extended.
  • Fig. 2 is a cross-sectional configuration diagram showing a state during compression of the elevator shock absorber in Embodiment 1 of the present invention.
  • Fig. 3 is a comparative view showing the dimensional relationship between the extension and compression of the elevator shock absorber in Embodiment 1 of the present invention.
  • FIG. 1 is a cross-sectional configuration diagram showing a state when the elevator shock absorber according to the first embodiment of the present invention is extended, and FIG. 2 shows a state when the elevator shock absorber according to the first embodiment of the present invention is compressed.
  • FIG. 1 is a cross-sectional configuration diagram showing a state when the elevator shock absorber according to the first embodiment of the present invention is extended, and FIG. 2 shows a state when the elevator shock absorber according to the first embodiment of the present invention is compressed.
  • the shock absorber is fitted into a base cylinder 1 filled with hydraulic oil and a first control cylinder 11 provided inside the base cylinder 1, and slides into the first cylinder.
  • the plunger 2 and the second plunger 3 are fitted into a second control cylinder 21 provided inside the first plunger 2 and are slid to enter.
  • the first control cylinder 11 is provided with a plurality of first orifice groups 12 as appropriate in the cylinder axial direction.
  • the second control cylinder 21 is provided with a plurality of second orifice groups 22 as appropriate in the cylinder axial direction.
  • a cushion member 4 is provided on the top of the second plunger 3 in order to prevent the metal from contacting each other between the elevator and the lifting body such as a counterweight and the plunger.
  • An oil chamber 24 is formed between the second control cylinder 21 and the outer peripheral wall 23 of the first plunger 2.
  • An oil passage 25 is provided at the bottom of the first plunger 2 to allow the oil chamber 24 and the base cylinder 1 to communicate with each other.
  • a second sliding member 30 is provided at the lower part of the outer peripheral portion of the second plunger 3, and the second plunger 3 The inner wall of the second control cylinder 21 slides while maintaining oil tightness and enters the first plunger 2.
  • the hydraulic oil in the first plunger 2 pressurized by the second plunger 3 is depressurized by passing through the second orifice group 22 and guided to the oil passage 25 via the oil chamber 24.
  • a first sliding member 20 is provided at the lower part of the outer periphery of the first plunger 2, and the first plunger 2 slides on the inner wall of the first control cylinder 11 while maintaining oil tightness in the base cylinder 1. enter in .
  • the hydraulic oil in the base cylinder 1 pressurized by the first plunger 2 is depressurized by passing through the first orifice group 12, and the first oil chamber 14a and the second oil chamber formed outside the first control cylinder 11 are used.
  • Guided to oil chamber 14b Guided to oil chamber 14b.
  • the first oil chamber 14a is provided on the outer periphery of the first control cylinder 11, and the second oil chamber 14b is provided outside the first oil chamber 14a.
  • a base cylinder wall 13 is provided between the first oil chamber 14a and the second oil chamber 14b, and the second oil chamber 14b provided in the outermost wall is an oil passage 15 provided in the lower portion of the base cylinder wall 13. Communicates with the first oil chamber 14a.
  • the height of the first oil chamber 14a and the second oil chamber 14b is configured to be lower than the height when the plungers 2 and 3 are fully compressed.
  • a piston 17 that slides along the inner wall is provided in the second oil chamber 14b, and the piston 17 seals the hydraulic oil in the second oil chamber 14b and serves as a hydraulic oil for the entire hydraulic shock absorber. It has a weight sufficient to apply a predetermined pressure and hold a predetermined oil level.
  • the second oil chamber 14b is the same height as the first oil chamber 14a, and is configured to be lower than the height when the plungers 2 and 3 are fully compressed.
  • a space 16 is formed.
  • the hydraulic oil guided from the first oil chamber 14a to the second oil chamber 14b via the oil passage 15 pushes up the piston 17 to the space 16 and is stored in the second oil chamber 14b.
  • An air hole 18 is formed at the top of the second oil chamber 14b so that the downward pressure applied to the piston does not fluctuate when the piston 17 is moved up and down.
  • the first plunger 2 and the second plunger 3 include a first return coil spring 5 and a second return coil spring for returning the compressed plungers 2 and 3 to the expanded state before compression. 6 are provided separately.
  • the weights of the structural members constituting the plungers 2 and 3 are supported by the first return coil spring 5 and the second return coil spring 6.
  • the first return coil spring 5 for returning the first plunger 2 to the expanded state before compression has a large diameter, is outside the outer peripheral wall 23 of the first plunger 2, and is at the upper end of the first plunger 2. It is arranged between the flange and the upper surface of the upper end of the base cylinder 1. Also, the second plunger 3 The second return coil spring 6 for returning to the stretched state before compression has a smaller diameter than the first return coil spring 5 and is provided in the second control cylinder 21 provided inside the first plunger 2 and 2 Located between the lower surface of the bottom plate 8 of the plunger 3 and the upper surface of the bottom of the first plunger 2. In the extended state of the first plunger 2 and the second plunger 3, as shown in FIG. 1, the second return coil spring 6 having a small diameter is arranged inside the first return coil spring 5 having a large diameter. .
  • the hydraulic shock absorber when there is no load is the space below the second oil chamber 14b partitioned by the piston 17, the first oil chamber 14a, the first control cylinder 11, the oil chamber 24, and the second oil chamber 14b. 2
  • the inside of the control cylinder 2 1 is filled with hydraulic oil.
  • the second plunger 3 moves down in the second control cylinder 21 of the first plunger 2.
  • the hydraulic oil inside the second control cylinder 21 is pressurized, Support the second plunger 3 upward, and push the first plunger 2 downward while applying deceleration force to the elevator car.
  • the hydraulic oil is ejected from the opening of the second orifice group 22 into the oil chamber 24 by the volume of the second plunger 3 entering the second control cylinder 21, and the pressure is reduced by the fluid resistance.
  • the oil chamber 24 is connected to the space in the first control cylinder 11 through the oil passage 25.
  • the pressures in the oil chamber 24 and the first control cylinder 11 are substantially equal.
  • the first plunger 2 is pushed downward by the pressure inside the second control cylinder 21.
  • hydraulic oil also flows into the first control cylinder 11 from the oil passage 25, and the inside of the first control cylinder 11
  • the hydraulic oil is pressurized and generates a force in the direction of supporting the first plunger 2 upward.
  • the pressure inside the second control cylinder 21 is higher than the pressure inside the oil chamber 24 and the first control cylinder 11, so that the first plunger 2 that does not flow back to the inside of the second control cylinder 21 1
  • the first orifice group 12 From the opening of the first orifice group 12 to the first oil chamber 14a, only the volume of the fluid that has entered the control cylinder 11 and the volume of hydraulic fluid that has passed through the oil passage 25 and has flowed into the first control cylinder 11 are used.
  • the hydraulic oil that also spouts the opening force of the first orifice group 12 is depressurized by the fluid resistance, and is depressurized by the mass of the piston 17 to a pressure that is always applied to the hydraulic oil in the oil chamber 14a.
  • the total opening area of the first orifice group 12 provided in the first control cylinder 11 decreases as the first plunger 2 descends, and the fluid resistance increases.
  • the first oil chamber 14a is connected to the second oil chamber 14b through the oil passage 15, and since the first oil chamber 14a is already filled with the hydraulic oil, the ejected hydraulic oil is used as the piston 17 in the second oil chamber 14b. Push up. Since the opening area of the oil passage 15 is larger than the opening area of the first orifice group 12, the pressure of the hydraulic oil in the first oil chamber 14a and the second oil chamber 14b is substantially equal. This pressure is always kept at the same level as the sum of the pressure due to the piston load and the atmospheric pressure if the sliding resistance of the piston 17 is ignored.
  • This pressure level is lower than the pressure in the second control cylinder 21 and the first control cylinder 11 when a large load is applied to the hydraulic shock absorber as in the buffering operation.
  • the hydraulic oil in the chamber 14a and the second oil chamber 14b is no longer involved in the deceleration performance. Since the series of operations described above are changes accompanying pressure changes, they are actually realized at the same time.
  • the total height when extended (FIG. 3a) is 1000 Omm
  • the total height when compressed (FIG. 3b) is 4000 mm
  • the stroke from the extended state to the compressed state is 60 OOmm
  • the compression height of the first return coil spring 5 is 1000 mm
  • the compression height of the second return coil spring 6 is 1000 mm.
  • the total height when stretched (Fig. 4a) is 10 500mm
  • the total height when compressed (Fig. 4b) is 4500mm
  • the stroke from stretched to compressed is 6000mm Therefore, the compression height of the first return coil spring is 1000 mm
  • the compression height of the second return coil spring is 1000 mm.
  • the first return coil spring 5 for returning the first plunger 2 to the extended state before compression is provided outside the outer peripheral wall 23 of the first plunger 2 and the upper end flange of the first plunger 2 and the base.
  • a second return coil spring 6 is provided on the inner side of the first plunger 2 to be disposed between the upper surface of the upper end of the cylinder 1 and for returning the second plunger 3 to the expanded state before compression.
  • the total height of the shock absorber is the same as the first return coil spring 5 and the second return coil spring 5 Coil spring 6 compression height (1000mm) 1Z2 500mm small short It can be seen that is. That is, according to the present invention, although the lengths of the base cylinder 1, the first plunger 2, and the second plunger 3 are different, the total height of the shock absorber is set to the first return coil spring while ensuring the same stroke as the conventional one. 5 and the compression height of the second return coil spring 6 can be shortened by about 1Z2.
  • the cost of the shock absorber can be reduced by shortening the total height of the shock absorber, and the assembling property and the installation property are improved. Furthermore, since the floor of the hoistway can be made shallower than before, the construction cost of the hoistway can be reduced.
  • the elevator shock absorber according to the present invention is disposed at the bottom of the hoistway pit, and the elevator force or counterweight passes over the lowest floor due to some abnormal cause, and the hoistway pit part It can be applied to a multi-stage hydraulic shock absorber to reduce the shock and stop safely when descending.

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

La présente invention concerne un ascenseur dans lequel la dimension totale en hauteur de l'amortisseur peut être réduite tout en garantissant la course équivalente, les coûts peuvent être réduits en diminuant la hauteur totale de l'amortisseur, et les performances d'assemblage et d'installation peuvent être améliorées. Dans l'amortisseur pour ascenseur comprenant un cylindre de base et une pluralité d'étages de piston dans lesquels chaque piston est pourvu d'un ressort à enroulement destiné à replacer chaque piston comprimé dans un état allongé avant la compression, le ressort à enroulement destiné à replacer le piston pénétrant dans le cylindre de base présente un grand diamètre, et il est agencé entre la partie supérieure du piston et la partie supérieure du cylindre de base sur l'extérieur du piston. Un autre ressort à enroulement destiné à replacer le piston sur l'étage supérieur pénétrant dans le piston sur l'étage inférieur présente un petit diamètre, et il est agencé entre la partie inférieure du piston sur l'étage supérieur et la partie inférieure du piston sur l'étage inférieur de l'intérieur de celui-ci. Dans un état allongé de chaque piston, l'autre ressort à enroulement de petit diamètre destiné au replacement est agencé sur l'intérieur du ressort à enroulement de grand diamètre destiné au replacement.
PCT/JP2006/323644 2006-11-28 2006-11-28 Amortisseur d'ascenseur WO2008065706A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020097008035A KR100975189B1 (ko) 2006-11-28 2006-11-28 엘리베이터의 완충기
JP2008546847A JPWO2008065706A1 (ja) 2006-11-28 2006-11-28 エレベータの緩衝器
PCT/JP2006/323644 WO2008065706A1 (fr) 2006-11-28 2006-11-28 Amortisseur d'ascenseur
CN2006800564258A CN101541659B (zh) 2006-11-28 2006-11-28 电梯缓冲器
EP06833448.1A EP2088111A4 (fr) 2006-11-28 2006-11-28 Amortisseur d'ascenseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/323644 WO2008065706A1 (fr) 2006-11-28 2006-11-28 Amortisseur d'ascenseur

Publications (1)

Publication Number Publication Date
WO2008065706A1 true WO2008065706A1 (fr) 2008-06-05

Family

ID=39467510

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/323644 WO2008065706A1 (fr) 2006-11-28 2006-11-28 Amortisseur d'ascenseur

Country Status (5)

Country Link
EP (1) EP2088111A4 (fr)
JP (1) JPWO2008065706A1 (fr)
KR (1) KR100975189B1 (fr)
CN (1) CN101541659B (fr)
WO (1) WO2008065706A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107165975A (zh) * 2017-07-12 2017-09-15 广东皇冠电梯有限公司 一种防水防冻电梯缓冲器
CN109987475A (zh) * 2019-04-29 2019-07-09 福州快科电梯工业有限公司 嵌入式多级电梯缓冲器及其工作方法
CN111559685A (zh) * 2020-05-21 2020-08-21 中元建设集团股份有限公司 一种防冲顶坠落装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101283897B1 (ko) * 2012-02-14 2013-07-16 현대엘리베이터주식회사 엘리베이터용 다단식 유압 완충기
EP2733106B1 (fr) * 2012-11-20 2016-02-24 Kone Corporation Ascenseur avec tampon avec longueur réglable.
CN103183272B (zh) * 2013-03-18 2015-07-22 苏州富士电梯有限公司 一种电梯钢丝绳延伸调节装置
CN105134869A (zh) * 2013-07-29 2015-12-09 蒋红娟 处理器模块控制的全自动液压成型制砖机
CN104154157B (zh) * 2014-08-15 2016-09-07 湖北民族学院 一种多级减震器
CN104477728A (zh) * 2014-11-30 2015-04-01 重庆和航科技股份有限公司 递进缓冲阻尼力的电梯系统
CN104495564B (zh) * 2014-11-30 2017-05-24 重庆和航科技股份有限公司 用于电梯的还原阻尼装置
CN105084152B (zh) * 2015-07-28 2017-10-03 嘉兴川页奇精密自动化机电有限公司 电梯救生安全台
CN106395549A (zh) * 2016-10-28 2017-02-15 成都聚智工业设计有限公司 一种电梯缓冲器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004043177A (ja) * 2002-05-21 2004-02-12 Mitsubishi Electric Corp エレベータの緩衝装置
JP2004324879A (ja) 2003-04-10 2004-11-18 Mitsubishi Electric Corp 油圧緩衝器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57175832U (fr) * 1981-04-30 1982-11-06
JPS5997335A (ja) * 1982-11-22 1984-06-05 Teruichi Iimoto 緩衝装置
JP3795792B2 (ja) * 2001-11-05 2006-07-12 三菱電機株式会社 多段油圧緩衝装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004043177A (ja) * 2002-05-21 2004-02-12 Mitsubishi Electric Corp エレベータの緩衝装置
JP2004324879A (ja) 2003-04-10 2004-11-18 Mitsubishi Electric Corp 油圧緩衝器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2088111A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107165975A (zh) * 2017-07-12 2017-09-15 广东皇冠电梯有限公司 一种防水防冻电梯缓冲器
CN109987475A (zh) * 2019-04-29 2019-07-09 福州快科电梯工业有限公司 嵌入式多级电梯缓冲器及其工作方法
CN111559685A (zh) * 2020-05-21 2020-08-21 中元建设集团股份有限公司 一种防冲顶坠落装置
CN111559685B (zh) * 2020-05-21 2021-06-11 中元建设集团股份有限公司 一种防冲顶坠落装置

Also Published As

Publication number Publication date
KR20090060349A (ko) 2009-06-11
CN101541659A (zh) 2009-09-23
CN101541659B (zh) 2011-05-04
EP2088111A4 (fr) 2013-08-21
KR100975189B1 (ko) 2010-08-10
EP2088111A1 (fr) 2009-08-12
JPWO2008065706A1 (ja) 2010-03-04

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