JP5080030B2 - Elevator emergency stop device - Google Patents

Elevator emergency stop device Download PDF

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JP5080030B2
JP5080030B2 JP2006171809A JP2006171809A JP5080030B2 JP 5080030 B2 JP5080030 B2 JP 5080030B2 JP 2006171809 A JP2006171809 A JP 2006171809A JP 2006171809 A JP2006171809 A JP 2006171809A JP 5080030 B2 JP5080030 B2 JP 5080030B2
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collar
hole
receiving member
load receiving
emergency stop
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JP2008001462A (en
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哲 小川
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Toshiba Elevator and Building Systems Corp
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Toshiba Elevator Co Ltd
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Description

この発明は、例えばエレベータの乗りかごの非常止め装置に適用される軸支持構造体に関する。   The present invention relates to a shaft support structure applied to, for example, an emergency stop device for an elevator car.

エレベータの非常止め装置の構造を図９および図１０に示してあり、この非常止め装置は一対のくさび部材１を備えている。この一対のくさび部材１は、乗りかごの昇降をガイドするガイドレール２を隔てて互いに対向するように配置されている。そして乗りかごが下降するときに、その下降の速度が規定値を超え、これがガバナ装置により検出されたときに、そのガバナ装置と連係するリンク機構により一対のくさび部材１が乗りかごに対して相対的に上方に押し上げられるとともに、そのくさび作用でガイドレール２に圧着し、このガイドレール２に圧着したくさび部材１が乗りかごに設けられたブロック状の鋳物製の荷重受け部材３に衝突し、この衝突で乗りかごが非常停止する。このようなエレベータの非常止め装置については、例えば特開２００４−３３８９０１に開示されている。   The structure of an elevator safety device is shown in FIGS. 9 and 10, and this safety device includes a pair of wedge members 1. The pair of wedge members 1 are disposed so as to face each other with a guide rail 2 that guides the raising and lowering of the car. When the car descends, the descending speed exceeds a specified value, and when this is detected by the governor device, the pair of wedge members 1 are relative to the car by the link mechanism linked to the governor device. The wedge member 1 is pushed upward and is crimped to the guide rail 2 by the wedge action, and the wedge member 1 crimped to the guide rail 2 collides with a load receiving member 3 made of a block-shaped casting provided on the car, The car is stopped in an emergency by this collision. Such an elevator safety device is disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-338901.

くさび部材１が衝突する前記荷重受け部材３は、例えば乗りかごの下部の床受枠４の下方に設けられている。すなわち、床受枠４の下面に梁部材５が取り付けられ、この梁部材５の内側に一対の軸体６を介して荷重受け部材３が支持されている。   The load receiving member 3 with which the wedge member 1 collides is provided, for example, below the floor receiving frame 4 at the lower part of the car. That is, the beam member 5 is attached to the lower surface of the floor receiving frame 4, and the load receiving member 3 is supported inside the beam member 5 via a pair of shaft bodies 6.

梁部材５および荷重受け部材３にはそれぞれ軸体６を通すための貫通孔７，８が形成され、これら貫通孔７，８を軸体６が貫通することにより荷重受け部材３が梁部材５の内側に支持され、この荷重受け部材３に非常止め装置の動作時に前記くさび部材１が衝突する。   The beam member 5 and the load receiving member 3 are respectively formed with through holes 7 and 8 for passing the shaft body 6. The shaft body 6 passes through these through holes 7 and 8 so that the load receiving member 3 is made of the beam member 5. The wedge member 1 collides with the load receiving member 3 during operation of the safety device.

軸体６と各貫通孔７，８との関係は、荷重受け部材３の組立作業性を考慮して、各貫通孔７，８の内径を軸体６の外径よりやや大きくし、軸体６を各貫通孔７，８に対してすき間ばめで挿入して荷重受け部材３を支持するようにしている。
特開２００４−３３８９０１ The relationship between the shaft body 6 and each through-hole 7, 8 is such that the inner diameter of each through-hole 7, 8 is slightly larger than the outer diameter of the shaft body 6 in consideration of the assembly workability of the load receiving member 3. 6 is inserted into the through holes 7 and 8 with a clearance fit to support the load receiving member 3.
JP 2004-338901 A

非常止め装置の動作時にはくさび部材１が荷重受け部材３に衝突し、荷重受け部材３に相当大きな荷重がかかる。そしてこの荷重は軸体６で受け止められることになり、この荷重により荷重受け部材３の貫通孔８と軸体６との間にヘルツ応力と呼ばれる大きな圧縮応力が生じる。この圧縮応力は荷重受け部材３の貫通孔８と軸体６との間のすき間が大きいほど大きくなり、荷重受け部材３の材料がＦＣＤ４００などの鋳物である場合、その圧縮応力が荷重受け部材３の許容応力を超えて破断してしまう恐れがある。   During operation of the emergency stop device, the wedge member 1 collides with the load receiving member 3 and a considerable load is applied to the load receiving member 3. This load is received by the shaft body 6, and a large compressive stress called Hertz stress is generated between the through hole 8 of the load receiving member 3 and the shaft body 6 due to this load. This compressive stress increases as the gap between the through hole 8 of the load receiving member 3 and the shaft body 6 increases. When the material of the load receiving member 3 is a casting such as FCD400, the compressive stress is applied to the load receiving member 3. There is a risk of breaking beyond the allowable stress.

圧縮応力が荷重受け部材３の材料の許容応力を超えないようにするためには、荷重受け部材３の貫通孔８の内径と軸体６の外径との寸法公差を厳格に管理してその両者間のすき間が十分に小さくなるようにするか、あるいは荷重受け部材３の材料としてクロムモリブデン鋼などのような高強度の材料を用いて許容応力を高めることが考えられる。   In order to prevent the compressive stress from exceeding the allowable stress of the material of the load receiving member 3, the dimensional tolerance between the inner diameter of the through hole 8 of the load receiving member 3 and the outer diameter of the shaft body 6 is strictly controlled. It is conceivable to increase the allowable stress by making the gap between them sufficiently small or by using a high-strength material such as chrome molybdenum steel as the material of the load receiving member 3.

しかしながら、前者の場合には高度な加工技術が必要であり、後者の場合には材料費が高くなり、いずれの場合もコストの大幅な増大につながってしまう。   However, in the former case, an advanced processing technique is required, and in the latter case, the material cost is high, and in either case, the cost is significantly increased.

この発明はこのような点に着目してなされたもので、その目的とするところは、コストの増大を伴うことなく荷重受け部材の破断を的確に防止することができるエレベータの非常止め装置を提供することにある。 The present invention has been made paying attention to such points, and an object of the present invention is to provide an emergency stop device for an elevator that can accurately prevent the breakage of the load receiving member without increasing the cost. There is to do.

請求項１の発明は、エレベータの乗りかごが規定の速度を超えて下降するときに、その乗りかごに対して相対的に上方に移動してガイドレールに圧着することで乗りかごを非常停止させるくさび部材と、前記乗りかごの下部の床受枠に設けられ、前記くさび部材がその移動時に衝突することで、所定の荷重を受ける荷重受け部材と、この荷重受け部材に形成された貫通孔を貫通して該荷重受け部材を支持した軸体と、前記貫通孔の内周に密に嵌合圧入されて該貫通孔と前記軸体との間に配置されたスリーブ状の高強度材料からなり、前記くさび部材の移動で前記荷重受け部材に衝撃荷重が加わる非常止め動作時の圧縮応力を受け止めて前記荷重受け部材の破断を防止するためのカラーとを具備することを特徴としている。 According to the first aspect of the present invention, when the elevator car descends beyond a prescribed speed, the elevator car is moved to an upper position relative to the elevator car and is crimped to the guide rail to make an emergency stop. A wedge member and a load receiving member that is provided on a floor receiving frame at the lower part of the car, and that receives a predetermined load when the wedge member collides when moving, and a through hole formed in the load receiving member. A shaft body supporting the load receiving member, and a sleeve-like high-strength material that is closely fitted and press-fitted into the inner periphery of the through hole and disposed between the through hole and the shaft body , And a collar for receiving a compressive stress during an emergency stop operation in which an impact load is applied to the load receiving member by the movement of the wedge member and preventing the load receiving member from being broken .

請求項２の発明は、前記カラーが、クロムモリブデン鋼、クロム鋼、ニッケルクロム鋼のいずれかの材料で形成されていることを特徴としている。   The invention of claim 2 is characterized in that the collar is formed of any one of chromium molybdenum steel, chromium steel, and nickel chromium steel.

請求項３の発明は、前記軸体が、前記カラーの内側にすき間ばめにより嵌合されて前記荷重受け部材を支持していることを特徴としている。   The invention of claim 3 is characterized in that the shaft body is fitted inside the collar by a clearance fit to support the load receiving member.

請求項４の発明は、前記カラーが、前記貫通孔に嵌合される前に冷却され、その冷却で外径が収縮した状態で前記貫通孔に差し込まれることを特徴としている。   According to a fourth aspect of the present invention, the collar is cooled before being fitted into the through hole, and is inserted into the through hole in a state where the outer diameter contracts due to the cooling.

請求項５の発明は、前記荷重受け部材が、前記貫通孔に前記カラーが嵌合される前に加熱され、その加熱で前記貫通孔の内径が拡張した状態でその貫通孔に前記カラーが差し込まれることを特徴としている。   According to a fifth aspect of the present invention, the load receiving member is heated before the collar is fitted into the through hole, and the collar is inserted into the through hole in a state where the inner diameter of the through hole is expanded by the heating. It is characterized by that.

請求項６の発明は、前記カラーが、周面の一部に軸方向に沿う一定の幅の溝状の切欠部が形成された断面ほぼＣ字状をなし、その切欠部により径方向に弾性的に変形することが可能で、前記荷重受け部材の貫通孔に嵌合されたときにその弾性力で該貫通孔の内周面に圧着することを特徴としている。   According to a sixth aspect of the present invention, the collar has a substantially C-shaped cross section in which a groove-shaped cutout portion having a constant width along the axial direction is formed on a part of the peripheral surface, and the cutout portion is elastic in the radial direction. It is characterized in that when it is fitted into the through hole of the load receiving member, it is crimped to the inner peripheral surface of the through hole by its elastic force.

請求項７の発明は、前記カラーの一端側の周縁にはフランジが一体的に形成され、前記カラーが前記荷重受け部材の貫通孔に嵌合されたときに、そのフランジが前記貫通孔に連なる前記荷重受け部材の側面に当接して該カラーが位置決めされることを特徴としている。   According to a seventh aspect of the present invention, a flange is integrally formed on a peripheral edge on one end side of the collar, and when the collar is fitted into the through hole of the load receiving member, the flange is continuous with the through hole. The collar is positioned in contact with a side surface of the load receiving member.

この発明のエレベータの非常止め装置によれば、コストの増大を伴うことなく荷重受け部材の不用意な破断を的確に防止することができる。 According to the elevator emergency stop device of the present invention, it is possible to accurately prevent inadvertent breakage of the load receiving member without increasing the cost.

以下、この発明の実施形態について図１ないし図８を参照して説明する。なお、図９および図１０に示す従来の構成と同一の部分には同一の符号を付して重複する説明は省略する。   Hereinafter, embodiments of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the part same as the conventional structure shown in FIG. 9 and FIG. 10, and the overlapping description is abbreviate | omitted.

図１ないし図３には第１の実施形態に係るエレベータの非常止め装置の構造を示してある。 FIGS. 1 to 3 show the structure of the emergency stop device for an elevator according to the first embodiment.

非常止め装置の荷重受け部材３には、軸体６を通すための複数の貫通孔８が形成され、これら貫通孔８の内周にそれぞれスリーブ状のカラー１０が嵌合圧入されている。これらカラー１０は、耐力が６００Ｎ／ｍｍ２以上、好ましくは８００Ｎ／ｍｍ２以上の高強度材料、例えばクロムモリブデン鋼のＳＣＭ４４０（耐力８３５Ｎ／ｍｍ２）、クロム鋼のＳＣｒ（７８５Ｎ／ｍｍ２）、ニッケルクロム鋼のＳＮＣ６３１（６８５Ｎ／ｍｍ２）などの高強度材料により形成されている。 A plurality of through holes 8 through which the shaft body 6 is passed are formed in the load receiving member 3 of the emergency stop device, and sleeve-like collars 10 are fitted and press-fitted into the inner periphery of these through holes 8 respectively. These color 10, proof stress 600N / mm 2 or more, preferably 800 N / mm 2 or more high strength material, for example, chromium molybdenum steel SCM440 (proof stress 835N / mm 2), chromium steel SCr (785N / mm 2), It is formed of a high-strength material such as nickel-chromium steel SNC631 (685 N / mm 2 ).

そしてこれらカラー１０の内側を通るように軸体６が挿入され、これら軸体６により荷重受け部材３が梁部材５の内側に水平に支持されている。各カラー１０は貫通孔８の内周面に密着するように圧入され、各軸体６は組立を容易にするためにすき間ばめによりカラー１０の内側に挿入されている。   The shaft body 6 is inserted so as to pass inside the collars 10, and the load receiving member 3 is horizontally supported inside the beam member 5 by the shaft bodies 6. Each collar 10 is press-fitted so as to be in close contact with the inner peripheral surface of the through-hole 8, and each shaft body 6 is inserted inside the collar 10 by a clearance fit to facilitate assembly.

非常止め装置の動作時には、荷重受け部材３にくさび部材１が衝突し、荷重受け部材３に乗りかごを停止させるための衝撃的な大きな荷重がかかり、この荷重が軸体６により受け止められる。   During the operation of the emergency stop device, the wedge member 1 collides with the load receiving member 3, and a large impact load is applied to the load receiving member 3 to stop the car, and this load is received by the shaft body 6.

この際、荷重受け部材３の貫通孔８と軸体６との間にはカラー１０が介在しており、このためまずカラー１０が軸体６から大きな荷重を受けて大きな圧縮応力（ヘルツ応力）が生じる。ところが、カラー１０は高強度材料で形成されており、このためカラー１０に大きな圧縮応力（ヘルツ応力）が生じても破断するようなことがない。   At this time, the collar 10 is interposed between the through-hole 8 of the load receiving member 3 and the shaft body 6, and for this reason, the collar 10 first receives a large load from the shaft body 6 and has a large compressive stress (Hertz stress). Occurs. However, the collar 10 is formed of a high-strength material, and therefore, the collar 10 does not break even if a large compressive stress (Hertz stress) occurs in the collar 10.

カラー１０に軸体６を介して大きな荷重が加わったときには、荷重受け部材３がそのカラー１０から圧縮応力を受ける。ところが、カラー１０は荷重受け部材３の貫通孔８に圧入され、カラー１０と貫通孔８との間にはほとんどすき間がなく、このため荷重受け部材３は大きなヘルツ応力を受けることがない。したがって、荷重受け部材３は鋳鉄などの通常の強度の材料で製作しても破断するようなことがなく、コストを抑えることができる。   When a large load is applied to the collar 10 via the shaft body 6, the load receiving member 3 receives a compressive stress from the collar 10. However, the collar 10 is press-fitted into the through hole 8 of the load receiving member 3, and there is almost no gap between the collar 10 and the through hole 8, so that the load receiving member 3 does not receive a large Hertzian stress. Therefore, even if the load receiving member 3 is made of a material having a normal strength such as cast iron, the load receiving member 3 is not broken and the cost can be suppressed.

各カラー１０を荷重受け部材３の貫通孔８内に圧入する手段の一例を説明すると、まずカラー１０の外径を貫通孔８の内径よりもわずかに大きな寸法に設定し、このカラー１０を荷重受け部材３よりも低い低温度にまで冷却する。これにより、カラー１０が収縮してその外径が貫通孔８の内径よりも小さくなるから、この状態でカラー１０を貫通孔８内に差し込み、そのまま放置する。   An example of means for press-fitting each collar 10 into the through hole 8 of the load receiving member 3 will be described. First, the outer diameter of the collar 10 is set to be slightly larger than the inner diameter of the through hole 8, and the collar 10 is loaded. Cool to a lower temperature than the receiving member 3. As a result, the collar 10 contracts and its outer diameter becomes smaller than the inner diameter of the through hole 8. In this state, the collar 10 is inserted into the through hole 8 and left as it is.

すると、カラー１０の温度が荷重受け部材３と同じ温度にまで上昇し、この温度上昇でカラー１０が膨張し、外径が拡張してその外周面が貫通孔８の内周面に圧着（密着）し、圧入状態となる。これにより、カラー１０と貫通孔８との間にほとんどすき間が生じず、カラー１０に軸体６から大きな荷重が加わっても、荷重受け部材３に大きなヘルツ応力が生じることがなく、荷重受け部材３の破断を防止することができる。   Then, the temperature of the collar 10 rises to the same temperature as that of the load receiving member 3, the collar 10 expands due to this temperature rise, the outer diameter expands, and the outer peripheral surface is crimped to the inner peripheral surface of the through-hole 8 ) And press-fitted state. Thereby, there is almost no gap between the collar 10 and the through-hole 8, and even if a large load is applied to the collar 10 from the shaft body 6, no large Hertzian stress is generated in the load receiving member 3, and the load receiving member 3 breakage can be prevented.

なお、カラー１０を貫通孔８内に圧入する手段としては、カラー１０を低温度に冷却する場合に限らず、荷重受け部材３をカラー１０よりも高温度に加熱して貫通孔８の内径を拡張し、この状態でカラー１０を貫通孔８内に差し込み、その後の荷重受け部材３の温度低下に伴う貫通孔８の内径の収縮で貫通孔８の内周面をカラー１０の外周面に圧着（密着）させる方法を採用することも可能である。   The means for press-fitting the collar 10 into the through hole 8 is not limited to cooling the collar 10 to a low temperature, but the inner diameter of the through hole 8 can be increased by heating the load receiving member 3 to a temperature higher than that of the collar 10. In this state, the collar 10 is inserted into the through-hole 8, and the inner peripheral surface of the through-hole 8 is crimped to the outer peripheral surface of the collar 10 by contraction of the inner diameter of the through-hole 8 with the subsequent temperature drop of the load receiving member 3 It is also possible to adopt a method of (adhering).

すなわち、カラー１０を貫通孔８内に圧入する手段は、カラー１０と荷重受け部材３とに温度差を設けてその温度差に基づいてカラー１０の外径寸法を貫通孔８の内径寸法より相対的に小さくしてカラー１０を貫通孔８内に差し込み、その後の温度の平衡によりカラー１０の外周面を貫通孔８の内周面に圧着させる方法を採用することができる。   That is, the means for press-fitting the collar 10 into the through hole 8 provides a temperature difference between the collar 10 and the load receiving member 3, and the outer diameter dimension of the collar 10 is relative to the inner diameter dimension of the through hole 8 based on the temperature difference. It is possible to adopt a method in which the collar 10 is inserted into the through-hole 8 and the outer peripheral surface of the collar 10 is pressure-bonded to the inner peripheral surface of the through-hole 8 by the subsequent temperature balance.

図４および図５には第２の実施形態を示してあり、この実施形態においては、スリーブ状のカラー１０の周面の一部に軸方向に沿う一定の幅の溝状の切欠部１０ａが形成され、カラー１０の断面形状がほぼＣ字状となっている。そして、その切欠部１０ａによりカラー１０が径方向に弾性的に変形するばね性をもっている。   4 and 5 show a second embodiment. In this embodiment, a groove-shaped notch 10a having a constant width along the axial direction is formed on a part of the circumferential surface of the sleeve-like collar 10. FIG. The collar 10 is formed in a substantially C-shaped cross section. The collar 10 has a spring property that elastically deforms in the radial direction by the notch 10a.

このカラー１０を荷重受け部材３の貫通孔８内に嵌合する際には、カラー１０をハンマーなどの工具を用いて貫通孔８内に圧入する。これにより、カラー１０の外周面が貫通孔８の内周面に圧着（密着）して強い圧入状態となり、カラー１０と貫通孔８との間にほとんどすき間が生じることがない。したがって非常止め装置の動作時にカラー１０に軸体６から大きな荷重が加わっても、荷重受け部材３に大きなヘルツ応力が生じることがなく、荷重受け部材３の破断を防止することができる。   When the collar 10 is fitted into the through hole 8 of the load receiving member 3, the collar 10 is press-fitted into the through hole 8 using a tool such as a hammer. As a result, the outer peripheral surface of the collar 10 is pressure-bonded (adhered) to the inner peripheral surface of the through hole 8 to be in a strong press-fitted state, and there is almost no gap between the collar 10 and the through hole 8. Therefore, even when a large load is applied to the collar 10 from the shaft body 6 during the operation of the emergency stop device, a large Hertzian stress is not generated in the load receiving member 3, and the load receiving member 3 can be prevented from being broken.

そして、この実施形態の場合には、上述のような温度管理を要することなく、カラー１０を貫通孔８内に容易に能率よく圧入することができる。なお、この実施形態の場合においても、カラー１０はクロムモリブデン鋼、クロム鋼、ニッケルクロム鋼などの高強度材料で形成されていることは言うまでもない。   In the case of this embodiment, the collar 10 can be easily and efficiently press-fitted into the through-hole 8 without requiring temperature management as described above. In the case of this embodiment, it goes without saying that the collar 10 is formed of a high-strength material such as chromium molybdenum steel, chromium steel, or nickel chromium steel.

図６ないし図８には第３の実施形態を示してあり、この実施形態においては、スリーブ状のカラー１０の一端側の周縁にその外周側に張り出すフランジ１０ｂが一体に形成されている。そしてこのカラー１０が荷重受け部材３の貫通孔８内に嵌合圧入され、そのフランジ１０ｂが荷重受け部材３の側面に当接して密着することによりカラー１０が所定の位置、つまりカラー１０の軸方向の区間が貫通孔８の軸方向の区間と的確に一致する位置に位置決めされている。   6 to 8 show a third embodiment. In this embodiment, a flange 10b projecting outward from the outer periphery of the sleeve-like collar 10 is formed integrally with the peripheral edge on one end side. The collar 10 is press-fitted into the through hole 8 of the load receiving member 3, and the flange 10b abuts against the side surface of the load receiving member 3 so that the collar 10 is in a predetermined position, that is, the shaft of the collar 10. The direction section is positioned at a position that exactly matches the axial section of the through-hole 8.

したがって、この実施形態では、カラー１０が貫通孔８の軸方向にずれて配置されることがなく、そのカラー１０の軸方向の区間と貫通孔８の軸方向の区間とが的確に一致するように位置決でき、非常止め装置の動作時の荷重をカラー１０および貫通孔８に偏りなく均等的に作用させることができる。   Therefore, in this embodiment, the collar 10 is not arranged so as to be shifted in the axial direction of the through hole 8, and the axial section of the collar 10 and the axial section of the through hole 8 are exactly matched. The load during operation of the emergency stop device can be applied evenly to the collar 10 and the through hole 8 evenly.

この発明の第１の実施形態に係るエレベータの非常止め装置を示す正面図。The front view which shows the emergency stop apparatus of the elevator which concerns on 1st Embodiment of this invention. その非常止め装置の要部を示す断面図。Sectional drawing which shows the principal part of the emergency stop device . その非常止め装置のカラーを示す斜視図。The perspective view which shows the collar of the emergency stop apparatus . この発明の第２の実施形態に係るエレベータの非常止め装置の要部を示す断面図。Sectional drawing which shows the principal part of the emergency stop apparatus of the elevator which concerns on 2nd Embodiment of this invention. その非常止め装置のカラーを示す斜視図。The perspective view which shows the collar of the emergency stop apparatus . この発明の第３の実施形態に係るエレベータの非常止め装置を示す正面図。The front view which shows the emergency stop apparatus of the elevator which concerns on 3rd Embodiment of this invention. その非常止め装置の要部を示す断面図。Sectional drawing which shows the principal part of the emergency stop device . その非常止め装置のカラーを示す斜視図。The perspective view which shows the collar of the emergency stop apparatus . 従来の非常止め装置を示す正面図。The front view which shows the conventional emergency stop apparatus . その非常止め装置の要部を示す斜視図。The perspective view which shows the principal part of the emergency stop device .

符号の説明Explanation of symbols

１…くさび部材
２…ガイドレール
３…荷重受け部材
４…床受枠
５…梁部材
６…軸体
８…貫通孔
１０…カラー
１０ａ…切欠部
１０ｂ…フランジ DESCRIPTION OF SYMBOLS 1 ... Wedge member 2 ... Guide rail 3 ... Load receiving member 4 ... Floor receiving frame 5 ... Beam member 6 ... Shaft body 8 ... Through-hole 10 ... Collar 10a ... Notch part 10b ... Flange

Claims (7)

エレベータの乗りかごが規定の速度を超えて下降するときに、その乗りかごに対して相対的に上方に移動してガイドレールに圧着することで乗りかごを非常停止させるくさび部材と、
前記乗りかごの下部の床受枠に設けられ、前記くさび部材がその移動時に衝突することで、所定の荷重を受ける荷重受け部材と、
この荷重受け部材に形成された貫通孔を貫通して該荷重受け部材を支持した軸体と、
前記貫通孔の内周に密に嵌合圧入されて該貫通孔と前記軸体との間に配置されたスリーブ状の高強度材料からなり、前記くさび部材の移動で前記荷重受け部材に衝撃荷重が加わる非常止め動作時の圧縮応力を受け止めて前記荷重受け部材の破断を防止するためのカラーと、
を具備することを特徴とするエレベータの非常止め装置。 A wedge member that, when the elevator car descends over a specified speed, moves upward relative to the car and crimps it to the guide rail to emergency stop the car;
A load receiving member that is provided on a floor receiving frame at a lower part of the car, and receives a predetermined load when the wedge member collides when moving;
A shaft body that supports the load receiving member through a through hole formed in the load receiving member;
It is made of a sleeve-like high-strength material that is tightly fitted and press-fitted into the inner periphery of the through-hole and disposed between the through-hole and the shaft body, and the load receiving member is subjected to an impact load by the movement of the wedge member. A collar for receiving a compressive stress during an emergency stop operation to prevent breakage of the load receiving member ;
An elevator emergency stop device characterized by comprising: 前記カラーは、クロムモリブデン鋼、クロム鋼、ニッケルクロム鋼のいずれかの材料で形成され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。   2. The elevator emergency stop device according to claim 1, wherein the collar is made of any one of chrome molybdenum steel, chrome steel, and nickel chrome steel. 前記軸体は、前記カラーの内側にすき間ばめにより嵌合されて前記荷重受け部材を支持していることを特徴とする請求項１または２に記載のエレベータの非常止め装置。   The elevator shaft emergency stop device according to claim 1 or 2, wherein the shaft body is fitted inside the collar by a clearance fit to support the load receiving member. 前記カラーは、前記貫通孔に嵌合される前に冷却され、その冷却で外径が収縮した状態で前記貫通孔に差し込まれることを特徴とする請求項１ないし３のいずれかに記載のエレベータの非常止め装置。   The elevator according to any one of claims 1 to 3, wherein the collar is cooled before being fitted into the through hole, and is inserted into the through hole in a state where the outer diameter contracts due to the cooling. Emergency stop device. 前記荷重受け部材は、前記貫通孔に前記カラーが嵌合される前に加熱され、その加熱で前記貫通孔の内径が拡張した状態でその貫通孔に前記カラーが差し込まれることを特徴とする請求項１ないし３のいずれかに記載のエレベータの非常止め装置。   The load receiving member is heated before the collar is fitted into the through hole, and the collar is inserted into the through hole in a state where the inner diameter of the through hole is expanded by the heating. Item 4. The elevator emergency stop device according to any one of Items 1 to 3. 前記カラーは、周面の一部に軸方向に沿う一定の幅の溝状の切欠部が形成された断面ほぼＣ字状をなし、その切欠部により径方向に弾性的に変形することが可能で、前記荷重受け部材の貫通孔に嵌合されたときにその弾性力で該貫通孔の内周面に圧着することを特徴とする請求項１ないし３のいずれかに記載のエレベータの非常止め装置。   The collar has a substantially C-shaped cross section in which a groove-shaped notch with a certain width along the axial direction is formed on a part of the peripheral surface, and can be elastically deformed in the radial direction by the notch. The emergency stop for an elevator according to any one of claims 1 to 3, wherein when being fitted into the through hole of the load receiving member, it is crimped to the inner peripheral surface of the through hole by its elastic force. apparatus. 前記カラーの一端側の周縁にはフランジが一体的に形成され、前記カラーが前記荷重受け部材の貫通孔に嵌合されたときに、そのフランジが前記貫通孔に連なる前記荷重受け部材の側面に当接して該カラーが位置決めされることを特徴とする請求項１ないし３のいずれかに記載のエレベータの非常止め装置。   A flange is integrally formed on a peripheral edge on one end side of the collar, and when the collar is fitted into the through hole of the load receiving member, the flange is formed on a side surface of the load receiving member that is continuous with the through hole. The elevator emergency stop device according to any one of claims 1 to 3, wherein the collar is positioned by contact.
JP2006171809A 2006-06-21 2006-06-21 Elevator emergency stop device Expired - Fee Related JP5080030B2 (en)

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JPS5413726Y2 (en) * 1973-09-11 1979-06-09
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FI84253C (en) * 1989-12-18 1991-11-11 Kone Oy Capture device for a lift
GB9405853D0 (en) * 1994-03-24 1994-05-11 Eaton Corp Bayonet bearing retainer
JPH10196671A (en) * 1997-01-13 1998-07-31 Seiko Epson Corp Fixing structure for shaft and gear and printer using this structure
WO2003002316A1 (en) * 2001-06-27 2003-01-09 Kanefusa Kabushiki Kaisha Rotary tool
JP2003221838A (en) * 2001-09-26 2003-08-08 Komatsu Ltd Working implement connection device
JP2003294090A (en) * 2002-04-01 2003-10-15 Oriental Chain Mfg Co Ltd Bush for roller chain and roller chain using the same
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