WO2012053073A1 - エレベータの非常止め装置 - Google Patents
エレベータの非常止め装置 Download PDFInfo
- Publication number
- WO2012053073A1 WO2012053073A1 PCT/JP2010/068486 JP2010068486W WO2012053073A1 WO 2012053073 A1 WO2012053073 A1 WO 2012053073A1 JP 2010068486 W JP2010068486 W JP 2010068486W WO 2012053073 A1 WO2012053073 A1 WO 2012053073A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- guide rail
- emergency stop
- car
- wedge
- contact
- Prior art date
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Classifications
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- 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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
Definitions
- This invention relates to an emergency stop device for an elevator for making an emergency stop of a lifting body (for example, a car or a counterweight).
- a lifting body for example, a car or a counterweight
- each of the small mass safety devices includes a pair of left and right supports disposed on both sides of the guide rail, and a pair of wedge members disposed between each support and the guide rail.
- each wedge member bites between the support and the guide rail, whereby a braking force is applied to the car (see Patent Document 1).
- Patent Document 3 Conventionally, in order to improve the reliability of operation, there has also been proposed an emergency stop device for an elevator provided with a plurality of ceramic friction pieces on the surface of the wedge member facing the guide rail (Patent Documents 2 and 2).
- JP 2001-354373 A Japanese Patent Laid-Open No. 7-41272 JP 59-7682 A
- the present invention has been made to solve the above-described problems, and an object thereof is to obtain an emergency stop device for an elevator that can improve the reliability of operation.
- An elevator emergency stop device is an elevator emergency stop device that is provided on a lifting body guided by a guide rail and applies a braking force to the lifting body.
- a first emergency stop mechanism having a braking body and applying a braking force to the elevating body by bringing the first braking body into contact with the guide rail; and a second braking body capable of contacting and separating from the guide rail.
- a second emergency stop mechanism that is disposed below the first emergency stop mechanism and applies a braking force to the elevator by bringing the second brake into contact with the guide rail.
- the contact position of the braking body and the contact position of the second braking body on the guide rail are shifted from each other in the horizontal direction.
- the contact position of the first braking body on the guide rail and the contact position of the second braking body on the guide rail are offset from each other in the horizontal direction.
- the second braking body can be slid with respect to the guide rail while avoiding the sliding surface of the first braking body.
- the first braking body can be prevented from sliding on the sliding surface that has become hot due to the sliding of the second braking body, and the friction coefficient of the first braking body relative to the guide rail can be reduced.
- the decrease can be suppressed. Therefore, not only the braking force by the second emergency stop mechanism but also the braking force by the first emergency stop mechanism can be generated more reliably. Therefore, it is possible to improve the reliability of the operation of the emergency stop device.
- FIG. 4 is a front view showing sliding traces generated on the car guide rail due to contact of the upper wedge and the lower wedge of FIG. 3 with the car guide rail.
- FIG. 1 is a block diagram showing an elevator car according to Embodiment 1 of the present invention.
- a pair of car guide rails 1 and a pair of counterweight guide rails are installed in the hoistway along the vertical direction.
- a car (elevating body) 2 is arranged between the car guide rails 1 and a counterweight (elevating body) (not shown) is arranged between the counterweight guide rails.
- the car 2 and the counterweight are suspended by a suspension body (not shown) that is wound around a driving sheave of a hoisting machine (driving device).
- a rope or a belt is used as the suspension body.
- the car 2 and the counterweight are moved in the vertical direction by the driving force of the hoisting machine.
- the car 2 is guided to each car guide rail 1 and the counterweight is guided to each counterweight guide rail.
- the car 2 has a car body 3 and a car frame 4 that supports the car body 3 in a state of surrounding the car body 3.
- an emergency stop device 5 is provided below the car frame 4, that applies a braking force to the car 2 to prevent the car 2 from falling.
- the emergency stop device 5 is provided with an operation lever 6.
- the emergency stop device 5 grips the car guide rail 1 by operating the operation lever 6. The fall of the car 2 is prevented by gripping the car guide rail 1 by the safety device 5.
- the governor rope 7 is connected to the operation lever 6.
- the governor rope 7 is wound around a governor sheave (not shown) of the governor installed at the upper part of the hoistway.
- a governor sheave (not shown) of the governor installed at the upper part of the hoistway.
- the governor grips the governor rope when the rotational speed of the governor sheave becomes excessive.
- the operation lever 6 is operated when the governor rope 7 is gripped by the governor and the car 2 is displaced with respect to the governor rope 7.
- the safety device 5 includes an upper safety mechanism (first emergency mechanism) 8 and a lower emergency mechanism (second emergency mechanism) disposed below the upper safety mechanism 8. 9 and an emergency mounting frame 10 that is fixed to the car frame 4 and supports the upper safety mechanism 8 and the lower safety mechanism 9. That is, the emergency stop device 5 is a duplex type emergency stop device.
- the upper emergency stop mechanism 8 is connected to an upper rotary shaft (first rotary shaft) 11 provided horizontally on the emergency stop mounting frame 10 and the upper rotary shaft 11 via a connecting lever 14.
- a pair of upper wedges (first braking bodies) 12 that are displaced in the vertical direction with respect to the emergency stop mounting frame 10 by the rotation of the rotary shaft 11 and the upper rotary shaft fixed to the emergency stop mounting frame 10.
- a pair of upper guide portions (first guide portions) 13 for guiding the upper wedge 12 displaced by the rotation of the guide 11 in a direction in which the upper wedge 12 is moved toward and away from the car guide rail 1.
- the upper guide portions 13 are opposed to each other via the car guide rail 1.
- the distance between each upper guide portion 13 and the car guide rail 1 continuously decreases from the lower portion to the upper portion of the upper guide portion 13.
- Each upper wedge 12 is disposed between each upper guide portion 13 and the car guide rail 1.
- Each upper wedge 12 is guided upward along the upper guide portion 13 in a direction contacting the car guide rail 1 by being displaced upward with respect to the emergency stop mounting frame 10, and downward with respect to the emergency stop mounting frame 10. By being displaced, it is guided along the upper guide portion 13 in a direction away from the car guide rail 1.
- Each upper wedge 12 bites between each upper guide portion 13 and the car guide rail 1 by being displaced upward while being guided along the upper guide portion 13.
- the car guide rails 1 are gripped between the upper wedges 12 by the upper wedges 12 biting between the upper guide portions 13 and the car guide rails 1.
- the upper emergency stop mechanism 8 applies a braking force to the car 2 by gripping the car guide rail 1 between the upper wedges 12. That is, the upper emergency stop mechanism 8 applies a braking force to the car 2 by bringing each upper wedge 12 into contact with the car guide rail 1.
- the lower emergency stop mechanism 9 is connected to a lower rotary shaft (second rotary shaft) 15 provided horizontally on the emergency stop mounting frame 10 and to the lower rotary shaft 15 via a connecting lever 18.
- the pair of lower wedges (second braking bodies) 16 that are displaced in the vertical direction with respect to the emergency stop mounting frame 10 and the emergency stop mounting frame 10 are fixed by the rotation of the lower rotation shaft 15.
- the lower guide portions 17 are opposed to each other via the car guide rail 1.
- the distance between each lower guide portion 17 and the car guide rail 1 continuously decreases from the lower portion to the upper portion of the lower guide portion 17.
- Each lower wedge 16 is disposed between each lower guide portion 17 and the car guide rail 1.
- Each lower wedge 16 is guided upward along the lower guide portion 17 in a direction contacting the car guide rail 1 by being displaced upward with respect to the emergency stop mounting frame 10. By being displaced downward, it is guided along the lower guide portion 17 in a direction away from the car guide rail 1.
- the lower wedges 16 are displaced upward while being guided along the lower guide portions 17 so as to bite between the lower guide portions 17 and the car guide rails 1.
- the car guide rails 1 are gripped between the lower wedges 16 as the lower wedges 16 bite between the lower guide portions 17 and the car guide rails 1.
- the lower emergency stop mechanism 9 applies a braking force to the car 2 by gripping the car guide rail 1 between the lower wedges 16. That is, the lower emergency stop mechanism 9 applies a braking force to the car 2 by bringing each lower wedge 16 into contact with the car guide rail 1.
- the car guide rails 1 disposed between the upper guide portions 13 and the lower guide portions 17 are common guide rails. Therefore, each upper wedge 12 and each lower wedge 16 can contact and separate from the common car guide rail 1.
- the operation lever 6 is fixed to the upper rotating shaft 11. Accordingly, the upper turning shaft 11 is turned according to the operation of the operation lever 6.
- a link device 19 that links the upper rotation shaft 11 and the lower rotation shaft 15 to each other is provided.
- the lower rotation shaft 15 is rotated at the same rotation angle as the upper rotation shaft 11 by interlocking with the upper rotation shaft 11 by the link device 19. Accordingly, each upper wedge 12 and each lower wedge 16 are in contact with the car guide rail 1 simultaneously. That is, the upper emergency stop mechanism 8 and the lower emergency stop mechanism 9 simultaneously grip the common car guide rail 1 and apply the braking force to the car 2 at the same time when the operation lever 6 is operated.
- FIG. 2 is a block diagram showing the upper wedge 12 and the lower wedge 16 when they are in contact with the car guide rail 1 of FIG.
- FIG. 3 is a configuration diagram showing the upper wedge 12 and the lower wedge 16 when viewed from the car guide rail 1 of FIG.
- an upper wedge 12 is provided on a wedge iron body (brake body main body) 20 made of cast iron and rotatably attached to a connecting lever 14 (FIG. 1), and is brought into contact with and separated from the car guide rail 1.
- a plurality of ceramic friction pieces 21 may be a member made of general structural rolled steel (SS400).
- the wedge main body 20 is provided with an inclined surface 20 a along the upper guide portion 13 and a rail facing surface 20 b facing the car guide rail 1.
- Each friction piece 21 is provided on the rail facing surface 20b.
- Each friction piece 21 is a columnar member protruding from the rail facing surface 20b.
- the lower wedge 16 is a cast iron wedge main body (brake body main body) 22 rotatably attached to a connecting lever 18 (FIG. 1), and a ceramic provided on the wedge main body 22 and contacting and separating from the car guide rail 1. And a plurality of friction pieces 23 made of metal.
- the wedge body 22 may be a member made of general structural rolled steel (SS400).
- the wedge body 22 is provided with an inclined surface 22 a along the lower guide portion 17 and a rail facing surface 22 b facing the car guide rail 1.
- Each friction piece 23 is provided on the rail facing surface 22b.
- Each friction piece 23 is a columnar member protruding from the rail facing surface 22b.
- Each friction piece 21 of the upper wedge 12 is disposed only in one of the two left and right regions with the center line of the rail facing surface 20b as a boundary.
- Each friction piece 23 of the lower wedge 16 is disposed only in the other of the two left and right regions with the center line of the rail facing surface 22b as a boundary.
- the upper wedge 12 and the lower wedge 16 are in contact with the car guide rail 1 along the length direction of the car guide rail 1 (that is, along the moving direction of the car 2), the upper wedge 12 is viewed. Twelve friction pieces 21 are arranged so as to avoid the friction pieces 23 of the lower wedge 16. Thereby, the contact position of the upper wedge 12 in the car guide rail 1 and the contact position of the lower wedge 16 in the car guide rail 1 are shifted from each other in the horizontal direction.
- the width dimensions of the wedge body 20 and the wedge body 22 are the same.
- the positions of the wedge body 20 and the wedge body 22 are the same in the horizontal direction.
- FIG. 4 is a front view showing sliding traces generated on the car guide rail 1 due to the contact of the upper wedge 12 and the lower wedge 16 of FIG. 3 with the car guide rail 1.
- the upper wedge 12 and the lower wedge 16 slide on the car guide rail 1 due to the inertial force of the car 2.
- an upper sliding mark 24 caused by sliding of the upper wedge 12 and a lower sliding mark 25 caused by sliding of the lower wedge 16 are generated in the car guide rail 1.
- the upper sliding trace 24 and the lower sliding trace 25 are generated at positions shifted from each other on the car guide rail 1 and do not overlap each other. That is, the upper sliding trace 24 is generated on the car guide rail 1 while avoiding the position of the lower sliding trace 25.
- each upper wedge 12 is displaced upward while being guided by each upper guide portion 13
- each lower wedge 16 is displaced upward while being guided by each lower guide portion 17.
- Each lower wedge 16 simultaneously contacts the common car guide rail 1.
- the contact position of the upper wedge 12 on the car guide rail 1 and the contact position of the lower wedge 16 on the car guide rail 1 are offset from each other in the horizontal direction.
- the upper wedge 12 can be slid with respect to the car guide rail 1 while avoiding the sliding surface of the lower wedge 16 with respect to the rail 1.
- the upper wedge 12 can be prevented from sliding on the sliding surface that has become hot due to the sliding of the lower wedge 16, and the lowering of the friction coefficient of the upper wedge 12 with respect to the car guide rail 1 is suppressed. can do.
- the upper wedge 12 and the lower wedge 16 have ceramic friction pieces 21 and 23 that come in contact with and separate from the car guide rail 1, the upper wedge 12 and the lower wedge when sliding with respect to the car guide rail 1. It is possible to prevent 16 plastic deformation, melting, breakage, and the like. Thereby, the reliability of the operation of the safety device 5 can be further improved. Further, the speed of the elevator can be increased, and the emergency stop device 5 can be further downsized.
- the shape of the friction pieces 21 and 23 is a cylindrical shape.
- the shape is not limited to this, and the shape of the friction pieces 21 and 23 may be, for example, a rectangular parallelepiped or a cube.
- the upper wedge 12 has the ceramic friction piece 21, but the friction piece 21 may not be made of ceramic.
- the wedge body 20 and each friction piece 21 may be integrally formed with the friction piece 21 made of the same cast iron as the wedge body 20.
- the lower wedge 16 has the ceramic friction piece 23, but the friction piece 23 may not be made of ceramic.
- the friction piece 23 may be made of the same cast iron as the wedge body 22, and the wedge body 22 and each friction piece 23 may be integrally formed.
- the wedge bodies 20 and 22 are provided with the plurality of friction pieces 21 and 23.
- the number of the friction pieces 21 and 23 provided on the wedge bodies 20 and 22 may not be plural.
- the size of the friction piece is adjusted so that the contact area with the car guide rail 1 is secured to a predetermined value.
- the wedge body 20 of the upper wedge 12 and the wedge body 22 of the lower wedge 16 are disposed at the same position in the horizontal direction.
- the wedge body 20 and the wedge body 22 are mutually connected in the horizontal direction. It may be shifted.
- the friction pieces 21 may be disposed in the entire region of the rail facing surface 20b of the wedge body 20, and the friction pieces 23 may be disposed in the entire region of the rail facing surface 22b of the wedge body 22.
- the number of steps of the emergency stop mechanism portion is two steps of the upper emergency stop mechanism portion 8 and the lower emergency stop mechanism portion 9, but the number of steps of the emergency stop mechanism portion may be three or more. .
- the safety device 5 is provided in the car 2.
- the safety device 5 may be provided on the counterweight.
- the emergency stop device 5 grips the counterweight guide rail, so that a braking force is applied to the counterweight.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1によるエレベータのかごを示す構成図である。図において、昇降路内には、一対のかごガイドレール1及び一対の釣合おもりガイドレール(図示せず)が上下方向に沿ってそれぞれ設置されている。各かごガイドレール1間にはかご(昇降体)2が配置され、各釣合おもりガイドレール間には図示しない釣合おもり(昇降体)が配置されている。かご2及び釣合おもりは、巻上機(駆動装置)の駆動綱車に巻き掛けられた図示しない懸吊体により吊り下げられている。懸吊体としては、例えばロープやベルト等が用いられている。かご2及び釣合おもりは、巻上機の駆動力により、上下方向へ移動される。かご2及び釣合おもりが上下方向へ移動されるときには、かご2が各かごガイドレール1に案内され、釣合おもりが各釣合おもりガイドレールに案内される。
Claims (2)
- ガイドレールに案内される昇降体に設けられ、上記昇降体に制動力を与えるためのエレベータの非常止め装置であって、
上記ガイドレールに接離可能な第1の制動体を有し、上記第1の制動体を上記ガイドレールに接触させることにより上記昇降体に制動力を与える第1の非常止め機構部、及び
上記ガイドレールに接離可能な第2の制動体を有し、上記第1の非常止め機構部の下方に配置され、上記第2の制動体を上記ガイドレールに接触させることにより上記昇降体に制動力を与える第2の非常止め機構部
を備え、
上記ガイドレールにおける上記第1の制動体の接触位置と、上記ガイドレールにおける上記第2の制動体の接触位置とは、水平方向について互いにずれていることを特徴とするエレベータの非常止め装置。 - 上記第1の制動体及び上記第2の制動体の少なくともいずれかは、制動体本体と、上記制動体本体に設けられ、上記ガイドレールに接離するセラミック製の摩擦片とを有していることを特徴とする請求項1に記載のエレベータの非常止め装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012539511A JPWO2012053073A1 (ja) | 2010-10-20 | 2010-10-20 | エレベータの非常止め装置 |
EP10858629.8A EP2631208A1 (en) | 2010-10-20 | 2010-10-20 | Emergency stop device for elevator |
PCT/JP2010/068486 WO2012053073A1 (ja) | 2010-10-20 | 2010-10-20 | エレベータの非常止め装置 |
CN2010800697307A CN103201206A (zh) | 2010-10-20 | 2010-10-20 | 电梯的紧急停止装置 |
KR1020137012709A KR20130093129A (ko) | 2010-10-20 | 2010-10-20 | 엘리베이터의 비상 멈춤 장치 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2010/068486 WO2012053073A1 (ja) | 2010-10-20 | 2010-10-20 | エレベータの非常止め装置 |
Publications (1)
Publication Number | Publication Date |
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WO2012053073A1 true WO2012053073A1 (ja) | 2012-04-26 |
Family
ID=45974809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/068486 WO2012053073A1 (ja) | 2010-10-20 | 2010-10-20 | エレベータの非常止め装置 |
Country Status (5)
Country | Link |
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EP (1) | EP2631208A1 (ja) |
JP (1) | JPWO2012053073A1 (ja) |
KR (1) | KR20130093129A (ja) |
CN (1) | CN103201206A (ja) |
WO (1) | WO2012053073A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014033846A1 (ja) * | 2012-08-28 | 2014-03-06 | 株式会社日立製作所 | エレベーターの非常止め装置およびエレベーター |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS597682A (ja) | 1982-07-07 | 1984-01-14 | 三菱電機株式会社 | エレベ−タの非常止め装置 |
JPH02295873A (ja) * | 1989-05-09 | 1990-12-06 | Mitsubishi Electric Corp | エレベータの非常止め装置 |
JPH0741272A (ja) | 1993-07-30 | 1995-02-10 | Mitsubishi Electric Corp | エレベーターの非常止め装置 |
JPH10258977A (ja) * | 1997-03-17 | 1998-09-29 | Toshiba Corp | エレベータ非常停止装置用ブレーキシュー、エレベータ用非常停止装置および非常停止機能を有するエレベータ |
JP2001354373A (ja) | 2000-06-14 | 2001-12-25 | Toshiba Elevator Co Ltd | エレベーター非常止め装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR870000232A (ko) * | 1985-06-06 | 1987-02-17 | 시기 모리야 | 엘리베이터용 비상 정지장치 |
GB2296487B (en) * | 1994-12-27 | 1996-12-04 | Hitachi Ltd | Elevator apparatus |
JP2001192184A (ja) * | 2000-01-11 | 2001-07-17 | Toshiba Corp | エレベータ非常止め装置 |
EP2517998B1 (en) * | 2004-12-15 | 2014-04-02 | Mitsubishi Electric Corporation | Elevator safety device |
-
2010
- 2010-10-20 CN CN2010800697307A patent/CN103201206A/zh active Pending
- 2010-10-20 EP EP10858629.8A patent/EP2631208A1/en not_active Withdrawn
- 2010-10-20 KR KR1020137012709A patent/KR20130093129A/ko not_active Application Discontinuation
- 2010-10-20 WO PCT/JP2010/068486 patent/WO2012053073A1/ja active Application Filing
- 2010-10-20 JP JP2012539511A patent/JPWO2012053073A1/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS597682A (ja) | 1982-07-07 | 1984-01-14 | 三菱電機株式会社 | エレベ−タの非常止め装置 |
JPH02295873A (ja) * | 1989-05-09 | 1990-12-06 | Mitsubishi Electric Corp | エレベータの非常止め装置 |
JPH0741272A (ja) | 1993-07-30 | 1995-02-10 | Mitsubishi Electric Corp | エレベーターの非常止め装置 |
JPH10258977A (ja) * | 1997-03-17 | 1998-09-29 | Toshiba Corp | エレベータ非常停止装置用ブレーキシュー、エレベータ用非常停止装置および非常停止機能を有するエレベータ |
JP2001354373A (ja) | 2000-06-14 | 2001-12-25 | Toshiba Elevator Co Ltd | エレベーター非常止め装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014033846A1 (ja) * | 2012-08-28 | 2014-03-06 | 株式会社日立製作所 | エレベーターの非常止め装置およびエレベーター |
CN104583111A (zh) * | 2012-08-28 | 2015-04-29 | 株式会社日立制作所 | 电梯的紧急制动装置以及电梯 |
CN104583111B (zh) * | 2012-08-28 | 2016-07-20 | 株式会社日立制作所 | 电梯的紧急制动装置以及电梯 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2012053073A1 (ja) | 2014-02-24 |
KR20130093129A (ko) | 2013-08-21 |
CN103201206A (zh) | 2013-07-10 |
EP2631208A1 (en) | 2013-08-28 |
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