JP3641938B2 - Elevator emergency stop device - Google Patents

Elevator emergency stop device Download PDF

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Publication number
JP3641938B2
JP3641938B2 JP15842498A JP15842498A JP3641938B2 JP 3641938 B2 JP3641938 B2 JP 3641938B2 JP 15842498 A JP15842498 A JP 15842498A JP 15842498 A JP15842498 A JP 15842498A JP 3641938 B2 JP3641938 B2 JP 3641938B2
Authority
JP
Japan
Prior art keywords
braking
emergency stop
stop device
guide rail
piece
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.)
Expired - Fee Related
Application number
JP15842498A
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Japanese (ja)
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JPH11335028A (en
Inventor
剛 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitec Co Ltd
Original Assignee
Fujitec 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
Application filed by Fujitec Co Ltd filed Critical Fujitec Co Ltd
Priority to JP15842498A priority Critical patent/JP3641938B2/en
Publication of JPH11335028A publication Critical patent/JPH11335028A/en
Application granted granted Critical
Publication of JP3641938B2 publication Critical patent/JP3641938B2/en
Anticipated expiration legal-status Critical
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Description

【0001】
【発明の属する技術分野】
本発明は、エレベータかご等の昇降体を要時に非常停止させるエレベータの非常止め装置に関するものである。
【0002】
【従来の技術】
エレベータの非常止め装置は、エレベータかご等の昇降体に設けられ、昇降体の速度が所定値を超えると作動し、非常止め装置を構成している制動体が昇降体を案内しているガイドレールに押圧されて昇降体を制動する。この非常止め装置の制動力は、制動体のガイドレールへの押圧力と、制動体とガイドレールとの摩擦係数の積で決定される。
【0003】
したがって、小型で高性能の非常止め装置を実現するには、押圧力と摩擦係数を大きくする必要がある。この押圧力を大きくするには制動体の材料を単位面積当たり高い圧力に耐えるものにする必要がある。
制動体の耐圧力は、ガイドレールへ押圧された時の制動体の制動面の溶融限界と、制動体の材料の降伏応力で決定される。制動体の制動面に塑性変形や溶融が発生すると摩擦力が不安定になるとともに、制動面の損耗が激しくなり所要の制動力が得られなくなる。
【0004】
特に、超高速・大容量のエレベータの場合、非常止め装置の作動時には制動体の制動面とガイドレールとの間で大きな制動力が働くため、制動面は高温になる。そこで近年は高温下でも溶融の生じにくいセラミック材が使用されるようになっている。一方、セラミックは脆性材料でありまた溶接等による固定も困難であるため、この点を考慮する必要がある。
【0005】
従来の非常止め装置を図により説明する。図3は全体概略図、図4(a) は制動体の正面図、図4(b) は図4(a) のA−A断面図である。
図において、1はエレベータかごからなる昇降体、2は昇降体1の昇降を案内するガイドレール、3は昇降体1に取り付けられた非常止め装置、4は非常止め装置3の制動体である。制動体4のガイドレール2の対向面4aには複数の穴5が空けられ、この穴5にはセラミック材からなる制動片6が嵌着されている。
上記のように、セラミック製制動片6を小形にすることにより、セラミック製制動片6の破損を防止している。
【0006】
図5は従来の他の例であり、制動体4の正面図及び側面図を示している。図に示すように、セラミック製制動片6は保持板7のガイドレール2の対向面7aに空けられた穴5に嵌着され、この保持板7は、制動体4を構成する保持体8に設けた凹部8aにボルト9で固定されている。
この従来例も図3,図4の従来例と同様に、セラミック製制動片6を小形にすることにより、セラミック製制動片6の破損を防止している。
【0007】
【発明が解決しようとする課題】
上記各従来例は、いずれも制動片6を制動片6とほぼ同径の穴5に嵌着することによって固定しているため、制動片6又は穴5に寸法誤差等があると嵌着時に制動片6が破損する可能性があった。
また、これを防止するために制動片6の断面を穴5の断面より小さく製作し、接着剤で制動片6を穴5に固定する方法も考えられている。しかし接着の場合、試験等により非常止め装置3を作動させると接着が剥がれる可能性があるという問題がある。
【0008】
【課題を解決するための手段】
本発明は、制動体のガイドレールの対向面に、制動片取付用の複数の穴とこれらの穴を通るようにスリットを設けたものである。
【0009】
【発明の実施の形態】
本発明の実施の形態を図により説明する。図1は本発明の制動体の正面図、右側面図、底面図を示すしている。図において、10は本実施形態による制動体であり、ガイドレールとの対向面10aに制動片11を取り付けるための穴12が空けられている。穴12の径は制動片11の径とほぼ同じである。更に、各穴12を通るように穴12より深いスリット13を設けている。
【0010】
本実施形態によれば、スリット13により、穴12が変形可能になっているため、制動片11の穴12への嵌着がスムーズに行え、多少の寸法誤差があっても制動片11が破損することはない。
【0011】
図2は本発明の他の実施の形態を示す正面図及び右側面図であり、ボルト・ナットからなる締め付け具14によりスリット13の幅を狭められるようにしたものである。
本実施形態によれば、穴12に制動片11を挿入した後、締め付け具14を締め付ければ、制動片11は穴12内に無理なく確実に固定される。
また非常止め装置が作動し制動片11がガイドレールに押圧されると、制動片11は制動体10に対して上方へ押し上げられスリット13を開く方向に作用するが、締め付け具14がこの力を抑える方向に作用する。
【0012】
上記各実施形態では、制動片11は円柱形をしているがこれに限ることはなく、制動片11の配置も自由である。また、制動体10に直接穴12を空けて制動片11を取り付ける代わりに、図5の従来例のように、保持板に穴及びスリット(及び締め付け具)を設け、この保持板を制動体のガイドレール対向面側に固定する構成にすることもできる。
【0013】
【発明の効果】
以上説明したように、本発明によれば、制動体へのセラミック製制動片の取り付けが容易で、かつ取り付け時のセラミック製制動片の破損の可能性がほとんどないエレベータの非常止め装置を提供することができる。
【図面の簡単な説明】
【図1】本発明の実施の形態を示す図である。
【図2】本発明の他の実施の形態を示す図である。
【図3】従来のエレベータの非常止め装置の全体概略図である。
【図4】従来の非常止め装置の制動体を示す図である。
【図5】従来の非常止め装置の制動体の他の例を示す図である。
【符号の説明】
1 エレベータかご
2 ガイドレール
3 非常止め装置
4,10 制動体
5,12 穴
6,11 制動片
7 保持板
13 スリット
14 締め付け具
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an emergency stop device for an elevator that causes an elevator such as an elevator car to perform an emergency stop when necessary.
[0002]
[Prior art]
An emergency stop device for an elevator is provided on a lifting body such as an elevator car, and operates when the speed of the lifting body exceeds a predetermined value, and a braking rail constituting the emergency stop device guides the lifting body. The lifting body is braked by being pressed by. The braking force of the emergency stop device is determined by the product of the pressing force of the braking body against the guide rail and the friction coefficient between the braking body and the guide rail.
[0003]
Therefore, in order to realize a small and high-performance emergency stop device, it is necessary to increase the pressing force and the friction coefficient. In order to increase the pressing force, it is necessary to make the material of the braking body withstand a high pressure per unit area.
The pressure resistance of the braking body is determined by the melting limit of the braking surface of the braking body when pressed against the guide rail and the yield stress of the material of the braking body. If plastic deformation or melting occurs on the braking surface of the braking body, the frictional force becomes unstable, and the braking surface is worn out and the required braking force cannot be obtained.
[0004]
In particular, in the case of an elevator with a very high speed and a large capacity, a large braking force acts between the braking surface of the braking body and the guide rail when the emergency stop device is operated, so that the braking surface becomes hot. Therefore, in recent years, ceramic materials that are less likely to melt even at high temperatures have been used. On the other hand, since ceramic is a brittle material and is difficult to be fixed by welding or the like, it is necessary to consider this point.
[0005]
A conventional safety device will be described with reference to the drawings. 3 is an overall schematic view, FIG. 4 (a) is a front view of the braking body, and FIG. 4 (b) is a cross-sectional view taken along line AA of FIG. 4 (a).
In the figure, reference numeral 1 denotes an elevator body composed of an elevator car, 2 a guide rail for guiding the elevator body 1 to move up and down, 3 an emergency stop device attached to the elevator body 1, and 4 a brake body of the emergency stop device 3. A plurality of holes 5 are formed in the opposing surface 4 a of the guide rail 2 of the braking body 4, and braking pieces 6 made of a ceramic material are fitted into the holes 5.
As described above, the ceramic brake piece 6 is prevented from being damaged by making the ceramic brake piece 6 small.
[0006]
FIG. 5 shows another example of the prior art, and shows a front view and a side view of the braking body 4. As shown in the drawing, the ceramic braking piece 6 is fitted into a hole 5 formed in the facing surface 7 a of the guide rail 2 of the holding plate 7, and this holding plate 7 is attached to the holding body 8 constituting the braking body 4. It is fixed with a bolt 9 to the provided recess 8a.
Similarly to the conventional examples of FIGS. 3 and 4, this conventional example prevents the ceramic braking piece 6 from being damaged by reducing the size of the ceramic braking piece 6.
[0007]
[Problems to be solved by the invention]
In each of the above conventional examples, the brake piece 6 is fixed by being fitted into the hole 5 having substantially the same diameter as the brake piece 6, so if there is a dimensional error in the brake piece 6 or the hole 5, There was a possibility that the braking piece 6 was damaged.
In order to prevent this, a method in which the cross section of the braking piece 6 is made smaller than the cross section of the hole 5 and the braking piece 6 is fixed to the hole 5 with an adhesive is also considered. However, in the case of adhesion, there is a problem that the adhesion may be peeled off when the safety device 3 is operated by a test or the like.
[0008]
[Means for Solving the Problems]
In the present invention, a plurality of holes for attaching a brake piece and slits are provided on the opposing surface of the guide rail of the brake body so as to pass through these holes.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a front view, a right side view, and a bottom view of a braking body of the present invention. In the figure, reference numeral 10 denotes a braking body according to the present embodiment, and a hole 12 for attaching the braking piece 11 is formed on a surface 10a facing the guide rail. The diameter of the hole 12 is substantially the same as the diameter of the brake piece 11. Further, a slit 13 deeper than the hole 12 is provided so as to pass through each hole 12.
[0010]
According to this embodiment, since the hole 12 can be deformed by the slit 13, the braking piece 11 can be smoothly fitted into the hole 12, and the braking piece 11 is damaged even if there is some dimensional error. Never do.
[0011]
2A and 2B are a front view and a right side view showing another embodiment of the present invention, in which the width of the slit 13 can be narrowed by a fastening tool 14 made of a bolt and a nut.
According to this embodiment, after inserting the braking piece 11 into the hole 12, if the fastening tool 14 is tightened, the braking piece 11 is securely fixed in the hole 12 without difficulty.
When the emergency stop device is activated and the braking piece 11 is pressed against the guide rail, the braking piece 11 is pushed upward with respect to the braking body 10 and acts in a direction to open the slit 13. Acts in the direction of suppression.
[0012]
In each of the above embodiments, the brake piece 11 has a cylindrical shape, but is not limited thereto, and the arrangement of the brake piece 11 is also free. Further, instead of directly drilling the hole 12 in the braking body 10 and attaching the braking piece 11, a hole and a slit (and a fastening tool) are provided on the holding plate as in the conventional example of FIG. It can also be set as the structure fixed to a guide rail opposing surface side.
[0013]
【The invention's effect】
As described above, according to the present invention, there is provided an emergency stop device for an elevator in which the ceramic braking piece can be easily attached to the braking body and the ceramic braking piece is hardly damaged at the time of attachment. be able to.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of the present invention.
FIG. 2 is a diagram showing another embodiment of the present invention.
FIG. 3 is an overall schematic view of a conventional elevator safety device.
FIG. 4 is a view showing a braking body of a conventional emergency stop device.
FIG. 5 is a view showing another example of a braking body of a conventional emergency stop device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Elevator car 2 Guide rail 3 Emergency stop device 4,10 Brake body 5,12 Hole 6,11 Brake piece 7 Holding plate 13 Slit 14 Fastening tool

Claims (3)

昇降体に設けられて要時に作動して前記昇降体を案内するガイドレールを押圧する制動体を備えたエレベータの非常止め装置において、
前記制動体の前記ガイドレールに対向する面には複数の穴と前記穴を通るように設けたスリットとが設けられ、前記複数の穴にはセラミック製の制動片が取り付けられていることを特徴とするエレベータの非常止め装置。
In the elevator emergency stop device provided with a braking body that is provided in the lifting body and operates when necessary to press the guide rail that guides the lifting body,
A surface of the braking body facing the guide rail is provided with a plurality of holes and slits provided so as to pass through the holes, and a ceramic braking piece is attached to the plurality of holes. Elevator emergency stop device.
昇降体に設けられて要時に作動して前記昇降体を案内するガイドレールを押圧する制動体を備えたエレベータの非常止め装置において、
前記制動体の前記ガイドレールに対向する側には保持が固定され、この保持の前記ガイドレールに対向する面には複数の穴と前記穴を通るように設けたスリットとが設けられ、前記複数の穴にはセラミック製の制動片が取り付けられていることを特徴とするエレベータの非常止め装置。
In the elevator emergency stop device provided with a braking body that is provided in the lifting body and operates when necessary to press the guide rail that guides the lifting body,
A holding plate is fixed to a side of the braking body facing the guide rail, and a surface of the holding plate facing the guide rail is provided with a plurality of holes and a slit provided to pass through the holes. The emergency stop device for an elevator, wherein a ceramic braking piece is attached to the plurality of holes.
前記スリットの幅を狭めるように作用する締め付け具を備えたことを特徴とする請求項1又は2記載のエレベータの非常止め装置。The elevator emergency stop device according to claim 1 or 2, further comprising a fastening tool that acts to narrow the width of the slit.
JP15842498A 1998-05-21 1998-05-21 Elevator emergency stop device Expired - Fee Related JP3641938B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15842498A JP3641938B2 (en) 1998-05-21 1998-05-21 Elevator emergency stop device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15842498A JP3641938B2 (en) 1998-05-21 1998-05-21 Elevator emergency stop device

Publications (2)

Publication Number Publication Date
JPH11335028A JPH11335028A (en) 1999-12-07
JP3641938B2 true JP3641938B2 (en) 2005-04-27

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Application Number Title Priority Date Filing Date
JP15842498A Expired - Fee Related JP3641938B2 (en) 1998-05-21 1998-05-21 Elevator emergency stop device

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070240941A1 (en) * 2005-12-21 2007-10-18 Daniel Fischer Brake shoe for use in elevator safety gear
JP2015168486A (en) * 2014-03-04 2015-09-28 株式会社日立製作所 Elevator emergency stop device

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