JP2907044B2 - Elevator safety gear - Google Patents
Elevator safety gearInfo
- Publication number
- JP2907044B2 JP2907044B2 JP34066094A JP34066094A JP2907044B2 JP 2907044 B2 JP2907044 B2 JP 2907044B2 JP 34066094 A JP34066094 A JP 34066094A JP 34066094 A JP34066094 A JP 34066094A JP 2907044 B2 JP2907044 B2 JP 2907044B2
- Authority
- JP
- Japan
- Prior art keywords
- piece
- sliding
- elevator
- sliding piece
- braking
- 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
Links
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、エレベータの非常止め
装置に係り、特に非常止め装置の作動時にガイドレール
に押圧される制動片の改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency stop device for an elevator, and more particularly to an improvement in a brake piece pressed against a guide rail when the emergency stop device is operated.
【0002】[0002]
【従来の技術】従来のエレベータの非常止め装置の一例
を図により説明する。図2は非常止め装置の要部側面
図、図3(a)は制動片の正面図、図3(b)は制動片
の中央縦断面図である。図において、1はエレベータの
昇降路に立設されたガイドレール2に案内されて昇降す
るエレベータかご、3はかご1の下部に設置された非常
止め装置、4はガイドレール2側に凹所4aが形成され
た制動片、5は鋼製の金属台6に焼結された焼結合金か
らなる摺動片、7は金属台6を制動片4の凹所4aに固
定するねじである。2. Description of the Related Art An example of a conventional elevator safety device will be described with reference to the drawings. 2 is a side view of a main part of the safety device, FIG. 3 (a) is a front view of a braking piece, and FIG. 3 (b) is a central longitudinal sectional view of the braking piece. In the figure, reference numeral 1 denotes an elevator car which moves up and down while being guided by the guide rails 2 erected on the hoistway of the elevator, 3 safety device installed at the bottom of the car 1, the recess 4a on the guide rail 2 side 4 Is a sliding piece made of a sintered alloy sintered on a steel metal base 6, and 7 is a screw for fixing the metal base 6 to the recess 4a of the braking piece 4.
【0003】異常発生等により、かご1の下降速度が所
定値を越え、調速機(図示省略)が作動して、制動片4
が引き上げられると、楔作用により、制動片4はガイド
レール2に押し付けられ、摺動片5とガイドレール2と
の摩擦力によってかご1は制動される。[0003] Due to the occurrence of an abnormality or the like, the descending speed of the car 1 exceeds a predetermined value, and a governor (not shown) is operated, so that the braking piece 4
Is pulled up, the braking piece 4 is pressed against the guide rail 2 by the wedge action, and the car 1 is braked by the frictional force between the sliding piece 5 and the guide rail 2.
【0004】しかしながら、超高速エレベータや特にか
ご重量の大きいエレベータのように、大きな制動力が必
要なエレベータの場合には、摺動片5に大きな摩擦熱が
発生することになる。この摩擦熱によって、万一摺動片
5に融解が発生すると、摩擦力が不安定になるととも
に、摺動面の損耗も激しくなり、所要の制動が行なえな
くなる可能性がある。そのため、摺動片5は融解が生じ
ない範囲で使用しなければならなかった。[0004] However, in the case of an elevator that requires a large braking force, such as an ultra-high-speed elevator or an elevator having a large car weight, a large amount of frictional heat is generated in the sliding piece 5. If the frictional heat causes the sliding piece 5 to be melted, the frictional force becomes unstable, and the sliding surface becomes severely worn, which may make it impossible to perform required braking. Therefore, the sliding piece 5 had to be used within a range where melting did not occur.
【0005】そこで、摺動片として融点の高いセラミッ
クを使用することが考えられているが、セラミックは靱
性に欠け、熱衝撃によって割れる可能性があるという問
題がある。そこで、セラミックを小片に分割して使用す
るものが考えられている。図4(a)は制動片の正面
図、図4(b)は制動片の中央縦断面図である。図にお
いて、8aは制動片8のガイドレール2側に設けられた
複数の嵌合部、9は嵌合部8aに嵌合されたセラミック
からなる摺動片である。Therefore, it is considered to use a ceramic having a high melting point as the sliding piece, but there is a problem that the ceramic lacks toughness and may be broken by a thermal shock. In view of this, there has been proposed a method in which ceramic is divided into small pieces and used. FIG. 4A is a front view of the braking piece, and FIG. 4B is a central longitudinal sectional view of the braking piece. In the drawing, reference numeral 8a denotes a plurality of fitting portions provided on the guide rail 2 side of the braking piece 8, and 9 denotes a sliding piece made of ceramic fitted to the fitting portion 8a.
【0006】この構造によれば、セラミックを使用して
いるため大きな制動力を得ることができ、また、セラミ
ックが小片であるため割れる可能性も小さい。According to this structure, a large braking force can be obtained because ceramic is used, and the possibility of cracking is small because the ceramic is a small piece.
【0007】[0007]
【発明が解決しようとする課題】しかしながら、セラミ
ックを使用しても、非常止め装置の作動時に摺動片9に
熱がこもり、割れが生じる可能性は依然残されていた。
また、摺動片9は嵌合部8aに嵌合するのみの構成であ
るから、もしセラミックに割れが生じると容易に欠落し
やすいという問題があった。更に、非常止め装置が作動
して摺動片9が摩耗すると、制動片8全体を取り替えな
ければならないという問題があった。However, even when ceramic is used, there is still a possibility that the sliding piece 9 may be filled with heat during operation of the safety device and cracks may occur.
In addition, since the sliding piece 9 is only configured to fit into the fitting portion 8a, there is a problem that if the ceramic is cracked, it is easily dropped. Furthermore, when the safety device operates and the sliding piece 9 is worn, there is a problem that the entire braking piece 8 must be replaced.
【0008】[0008]
【課題を解決するための手段】本発明は、摺動片を小片
にするとともに、その形状を円錐台や角錐台のような下
膨れ形状にし、その基台部側を鋳ぐるみによって、摺動
片より熱伝導率の高い金属台と一体に成形し、この金属
台を制動片に着脱可能に固定する構成にしたものであ
る。SUMMARY OF THE INVENTION According to the present invention, a sliding piece is formed into a small piece, the shape thereof is formed into a downwardly swelling shape such as a truncated cone or a truncated pyramid, and the base portion is formed by casting. It is formed integrally with a metal base having higher thermal conductivity, and this metal base is detachably fixed to the braking piece.
【0009】[0009]
【作用】本発明では、摺動片で発生した摩擦熱は熱伝導
率の高い金属台を伝わって速やかに発散する。そのた
め、摺動片に熱がこもりにくくなり、摺動片の融解や熱
衝撃による割れを抑制することができる。また、摺動片
が下膨れ形状であるため、もし割れが生じても、摺動片
が欠落する可能性はほとんどない。更に、非常止め装置
の作動により摺動片が摩耗した場合でも、制動片を取り
替える必要はなく、金属台のみを取り替えればよいた
め、メンテナンスが容易である。また、従来の制動片と
も互換性を有するため、部品の標準化が行なえる。According to the present invention, the frictional heat generated by the sliding piece is quickly dissipated through the metal base having a high thermal conductivity. Therefore, heat is less likely to be trapped in the sliding pieces, and cracking due to melting or thermal shock of the sliding pieces can be suppressed. Further, since the sliding piece has a downward swelling shape, even if a crack occurs, there is almost no possibility that the sliding piece is missing. Further, even when the sliding piece is worn by the operation of the safety device, it is not necessary to replace the braking piece, and only the metal stand needs to be replaced, so that maintenance is easy. In addition, since it is compatible with the conventional brake pieces, standardization of parts can be performed.
【0010】[0010]
【実施例】本発明の一実施例を図により説明する。図1
(a)は制動片の正面図、図1(b)は制動片の中央縦
断面図である。図において、10はセラミックからなる
角錐台形状の摺動片、11は鋳鉄,鋼,銅など、セラミ
ックよりも熱伝導率の高い金属からなる金属台で、摺動
片10の基底部側と一体に鋳ぐるみ成形されている。図
3と同一符号は同一のものを示している。BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG.
FIG. 1A is a front view of a braking piece, and FIG. 1B is a central longitudinal sectional view of the braking piece. In the drawing, reference numeral 10 denotes a truncated pyramid-shaped sliding piece made of ceramic, 11 denotes a metal base made of a metal having a higher thermal conductivity than ceramic, such as cast iron, steel, or copper, and is integrated with the base of the sliding piece 10. It is cast-molded. The same reference numerals as those in FIG. 3 indicate the same components.
【0011】本実施例では、摺動片10と金属台11と
の接触面積が広く、かつ金属台11の熱伝導率が高いた
め、摺動片10で発生した摩擦熱は速やかに金属台11
に伝導されて発散し、摺動片10の温度上昇が抑制され
て、安定した制動効果が得られるとともに、割れが生じ
にくい。また、摺動片10が角錐台形状であるため、も
し割れが生じても、摺動片10が欠落する可能性はほと
んどない。更に、非常止め装置の作動により摺動片10
が摩耗した場合でも、制動片4全体を取り替える必要は
なく、金属台11のみを取り替えればよいため、メンテ
ナンスが容易であり、また、従来の制動片4とも互換性
を有するため、部品の標準化が実現できる。In this embodiment, since the contact area between the sliding piece 10 and the metal base 11 is large and the thermal conductivity of the metal base 11 is high, the frictional heat generated in the sliding piece 10 is quickly reduced to the metal base 11.
The sliding piece 10 is diverged and the temperature rise of the sliding piece 10 is suppressed, a stable braking effect is obtained, and cracks are hardly generated. Further, since the sliding piece 10 has a truncated pyramid shape, even if a crack occurs, there is almost no possibility that the sliding piece 10 will be missing. Further, the operation of the emergency stop device causes the sliding piece 10 to move.
Even if the brakes are worn, it is not necessary to replace the entire braking piece 4 and only the metal table 11 needs to be replaced, so that maintenance is easy, and since it is compatible with the conventional braking piece 4, standardization of parts is possible. Can be realized.
【0012】上記のように、本実施例によれば、従来の
制動片が有していた問題点を解決し、超高速エレベータ
やかご重量の大きいエレベータに適用しても信頼度の高
い動作を行うことができる。As described above, according to the present embodiment, the problem of the conventional braking piece is solved, and the operation with high reliability can be achieved even when applied to an ultra-high-speed elevator or an elevator having a large car weight. It can be carried out.
【0013】上記実施例では、摺動片10は角錐台形状
になっているが、円錐台形状等の他の下膨れ形状でも良
く、金属台11に埋め込まれた部分の断面積が露出した
部分の断面積より大きい形状であればよい。In the above embodiment, the sliding piece 10 has a truncated pyramid shape, but may have another truncated cone shape such as a truncated cone shape. What is necessary is just a shape larger than a cross-sectional area.
【0014】更に、摺動片10は、セラミックの他に、
炭素−セラミック複合材を使用してもよい。この炭素−
セラミック複合材は、黒鉛マトリックスの中にセラミッ
クが粒成長して分散したもので、耐熱性,耐熱衝撃性に
優れ、強度も高いものである。Further, the sliding piece 10 is made of a material other than ceramic,
A carbon-ceramic composite may be used. This carbon-
The ceramic composite material is a graphite matrix in which ceramic particles are grown and dispersed in a graphite matrix, and has excellent heat resistance, thermal shock resistance, and high strength.
【0015】また、摺動片10として、焼結合金を使用
することもできる。焼結合金の場合、セラミックほどの
耐熱性はないが、上記実施例のように、熱伝導率の高い
金属台11との接触面積を大きくしておけば、摩擦熱は
速やかに金属台11に伝導され、摺動片10の温度上昇
が抑制されるため、超高速エレベータ等でも十分に使用
できる。また、本発明はエレベータかごのみならず、釣
合い重り等の他の昇降体にも同様に適用することができ
る。Further, as the sliding piece 10, a sintered alloy can be used. In the case of the sintered alloy, the heat resistance is not as high as that of the ceramic, but if the contact area with the metal base 11 having high thermal conductivity is increased as in the above embodiment, the frictional heat is quickly applied to the metal base 11. Since the heat is transmitted and the temperature rise of the sliding piece 10 is suppressed, it can be sufficiently used even in an ultra-high-speed elevator or the like. Further, the present invention can be similarly applied to not only elevator cars but also other lifting bodies such as counterweights.
【0016】[0016]
【発明の効果】以上説明したように、本発明によれば、
摺動片が確実に保持されるとともに、耐熱性に優れ、メ
ンテナンスが容易で部品の互換性をも有する、信頼度の
高いエレベータの非常止め装置を得ることができる。As described above, according to the present invention,
A highly reliable emergency stop device for an elevator can be obtained, in which the sliding piece is securely held, has excellent heat resistance, is easy to maintain, and has component interchangeability.
【図1】本発明の一実施例を示す図である。FIG. 1 is a diagram showing one embodiment of the present invention.
【図2】エレベータの非常止め装置の要部側面図であ
る。FIG. 2 is a side view of a main part of an emergency stop device of the elevator.
【図3】従来の制動片を示す図である。FIG. 3 is a view showing a conventional braking piece.
【図4】従来の制動片を示す図である。FIG. 4 is a view showing a conventional braking piece.
1 エレベータかご 2 ガイドレール 3 非常止め装置 4,8 制動片 5,9,10 摺動片 6,11 金属台 DESCRIPTION OF SYMBOLS 1 Elevator car 2 Guide rail 3 Emergency stop device 4,8 Braking piece 5,9,10 Sliding piece 6,11 Metal stand
Claims (2)
られ、要時に動作して上記ガイドレールに押圧される方
向に移動する制動片を有するエレベータの非常止め装置
において、 下膨れ形状をなす複数の摺動片と、これら各摺動片が上
記ガイドレールに対向するように、各摺動片の基台部側
を埋め込んだ、摺動片よりも熱伝導率の高い金属からな
る金属台と、この金属台を上記制動片に着脱可能に固定
する手段とを備えたことを特徴とするエレベータの非常
止め装置。1. A provided lifting member to be guided by the guide rails, it is pressed against the guide rail running when needed
An emergency stop device for an elevator having a braking piece that moves in a direction, a plurality of sliding pieces having a downward bulging shape, and a base portion side of each sliding piece such that each of the sliding pieces faces the guide rail. An emergency stop device for an elevator, comprising: a metal base made of a metal having a higher thermal conductivity than the sliding piece, and means for detachably fixing the metal base to the braking piece.
られ、要時に動作して上記ガイドレールに押圧される方
向に移動する制動片を有するエレベータの非常止め装置
において、 複数の摺動片と、これら各摺動片が上記ガイドレールに
対向するように、各摺動片の一側を埋め込んだ、摺動片
よりも熱伝導率の高い金属からなる金属台と、この金属
台を上記制動片に着脱可能に固定する手段とを備え、上
記摺動片の一側と埋め込まれていない他側とは断面形状
が異なり容易に脱落しない構成になっていることを特徴
とする エレベータの非常止め装置。2. An elevating body guided by a guide rail.
Is operated when necessary and pressed by the guide rail.
Safety device for elevators with braking piece moving in opposite directions
, A plurality of sliding pieces and each of these sliding pieces
Sliding pieces with one side of each sliding piece embedded so as to face each other
A metal base made of metal with higher thermal conductivity than this metal
Means for detachably fixing the base to the braking piece.
Cross section of one side of the sliding piece and the other side not embedded
The feature is that it is different and does not fall off easily
Emergency stop device for an elevator to be.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34066094A JP2907044B2 (en) | 1994-10-28 | 1994-10-28 | Elevator safety gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34066094A JP2907044B2 (en) | 1994-10-28 | 1994-10-28 | Elevator safety gear |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08127481A JPH08127481A (en) | 1996-05-21 |
JP2907044B2 true JP2907044B2 (en) | 1999-06-21 |
Family
ID=18339106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP34066094A Expired - Fee Related JP2907044B2 (en) | 1994-10-28 | 1994-10-28 | Elevator safety gear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2907044B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010274323A (en) * | 2009-06-01 | 2010-12-09 | Sapporo Kokyu Imono Co Ltd | Ceramic/metal composite material by cast-in insertion process and method for manufacturing the same |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4826206B2 (en) * | 2005-10-28 | 2011-11-30 | 株式会社日立製作所 | Elevator emergency stop device |
KR101006192B1 (en) * | 2010-09-09 | 2011-01-07 | 주식회사 장원엔지니어링 | Trolley bar used safety accident prevention |
JP6422396B2 (en) * | 2015-05-21 | 2018-11-14 | 三菱電機株式会社 | Elevator emergency stop device |
CN107082336A (en) * | 2016-02-16 | 2017-08-22 | 上海三菱电梯有限公司 | Braking voussoir, emergency braking apparatus and the elevator of brake shoe for elevator emergency stop |
-
1994
- 1994-10-28 JP JP34066094A patent/JP2907044B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010274323A (en) * | 2009-06-01 | 2010-12-09 | Sapporo Kokyu Imono Co Ltd | Ceramic/metal composite material by cast-in insertion process and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
JPH08127481A (en) | 1996-05-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |