JP4992556B2 - Elevator oil-filled shock absorber - Google Patents

Elevator oil-filled shock absorber Download PDF

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JP4992556B2
JP4992556B2 JP2007147969A JP2007147969A JP4992556B2 JP 4992556 B2 JP4992556 B2 JP 4992556B2 JP 2007147969 A JP2007147969 A JP 2007147969A JP 2007147969 A JP2007147969 A JP 2007147969A JP 4992556 B2 JP4992556 B2 JP 4992556B2
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plunger
shock absorber
oil
elevator
support member
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JP2008297113A (en
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光芳 井村
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Mitsubishi Electric Corp
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Description

この発明は、昇降路のピット底部に配置され、何らかの原因により、エレベータかご或いは釣合いおもりが最下階を行き過ぎて、昇降路ピット部へ下降した時に衝撃を少なくし、停止させるエレベータの油入緩衝装置に関するものである。   This invention is arranged at the bottom of the pit of the hoistway, and for some reason, the elevator car or the counterweight goes over the lowest floor and when it descends to the hoistway pit, it reduces the impact and stops the oil-filled buffer. It relates to the device.

従来のエレベータの油入緩衝装置においては、長尺物であるプランジャが座屈することを抑制するサポート機構を具備している。
例えば、作動油を収容したシリンダと、ばねを内蔵し上記シリンダに挿嵌されたプランジャとを備えてなり、エレベータ昇降路の下部ピット内に配設された油入緩衝器において、上記プランジャの上部に、プランジャに直交してその両側に伸びる水平部材を装着し、該水平部材の両先端に、かごの両側に立設されたガイドレールを挟持して上下動自在のガイドシューを装着したエレベータの油入緩衝器が知られている（例えば、特許文献１参照）。また、エレベータの昇降路の底部に上方に突出するように取り付けられるシリンダ及びシリンダの上端部から上方に突出すると共にシリンダに対して軸方向に伸縮するプランジャを有するオイルバッファと、オイルバッファの側方に固定配置されたプランジャ復帰確認スイッチと、プランジャに取り付けられプランジャがシリンダから所定長さ突出したときにプランジャ復帰確認スイッチを切り換えるサポート部材と、オイルバッファの側方に固定配置されサポート部材を上下方向に案内する回り止めガイドとを具備するエレベータの衝撃緩衝装置が知られている（例えば、特許文献２参照）。 Conventional elevator oil-filled shock absorbers include a support mechanism that suppresses buckling of a long plunger.
For example, in an oil-filled shock absorber provided in a lower pit of an elevator hoistway, comprising a cylinder that contains hydraulic oil and a plunger that has a built-in spring and is fitted into the cylinder. In addition, a horizontal member that is perpendicular to the plunger and that extends on both sides of the horizontal member is mounted, and guide rails that are erected on both sides of the car are sandwiched between both ends of the horizontal member, and a guide shoe that is movable up and down is mounted. An oil-filled shock absorber is known (for example, see Patent Document 1). Also, a cylinder mounted to protrude upward at the bottom of the elevator hoistway, an oil buffer having a plunger protruding upward from the upper end of the cylinder and extending and contracting in the axial direction relative to the cylinder, and a side of the oil buffer A plunger return confirmation switch fixedly placed on the plunger, a support member attached to the plunger and switching the plunger return confirmation switch when the plunger protrudes from the cylinder by a predetermined length, and a support member fixedly arranged on the side of the oil buffer. 2. Description of the Related Art An elevator shock absorbing device including a detent guide that guides to a vehicle is known (see, for example, Patent Document 2).

特開平５−１３９６５４号公報JP-A-5-139654 特開２００４−１０３２７号公報JP 2004-10327 A

エレベータの油入緩衝装置は、超高速領域では、プランジャの長さ及びストロークが数メートルと大きくなるため、エレベータかご或いは釣合いおもりの衝突による軸方向の圧縮力に対し、座屈変形がし易くなる。また、現場での緩衝器の据付け誤差などにより、偏心荷重を受ける場合には、特に座屈に対する強度が著しく低下してしまう。また、座屈に対する強度を上げるためには、プランジャの径及び断面２次モーメントを大きくする必要があり、それは緩衝器全体の大型化・重量増大によるコストアップとなり、更に、組立性や搬入・据付性を悪くしていた。そこで、従来技術のようにプランジャ上部にサポート部材を固定する構造が採用されている。しかし、従来技術ではサポート部材がプランジャをガイドするため、座屈変形しにくくなる可能性はあるが、サポート部材とプランジャとが固定されているため、以下のような問題点がある。
先ず、プランジャの復帰用としてコイルばねを用いる場合には、コイルばねの圧縮時及び復帰時にプランジャを回転させる捻り力が発生するため、その力に抗するために結合部及びサポート部材の強度アップが必要となる。特に、高速エレベータではプランジャのストローク及び長さが長くなることで、捻り力が大きくなる。
また、サポート部材とプランジャが固定されているため、据付け時に発生するガイドと緩衝器の鉛直度の違いを吸収することができない。 The oil-filled shock absorber for an elevator has a plunger length and stroke as large as several meters in an ultra-high speed region, so that it easily undergoes buckling deformation against the axial compressive force caused by the collision of the elevator car or counterweight. . Further, when receiving an eccentric load due to an installation error of the shock absorber in the field, the strength against buckling is particularly lowered. In order to increase the strength against buckling, it is necessary to increase the plunger diameter and the moment of inertia of the cross section, which increases the overall size and weight of the shock absorber, and further increases the assembly performance, loading and installation. I had a bad sex. Therefore, a structure in which the support member is fixed to the upper portion of the plunger as in the prior art is employed. However, in the prior art, since the support member guides the plunger, it may be difficult to buckle and deform. However, since the support member and the plunger are fixed, there are the following problems.
First, when a coil spring is used for returning the plunger, a twisting force that rotates the plunger is generated at the time of compression and return of the coil spring, so that the strength of the coupling portion and the support member is increased to resist the force. Necessary. In particular, in a high-speed elevator, the torsional force is increased by increasing the stroke and length of the plunger.
In addition, since the support member and the plunger are fixed, it is impossible to absorb the difference in verticality between the guide and the shock absorber that occurs during installation.

この発明は上記のような課題を解決するためになされたもので、簡素な構造によりプランジャの座屈を抑制でき、安全装置としての信頼性が向上するとともに、緩衝器の小型・軽量化により、コストを低減でき、組立性や据付性を向上させたエレベータの油入緩衝装置を提供するものである。   This invention was made in order to solve the above problems, and can suppress the buckling of the plunger with a simple structure, improve the reliability as a safety device, and reduce the size and weight of the shock absorber. It is an object of the present invention to provide an oil-filled shock absorber for an elevator that can be reduced in cost and improved in ease of assembly and installation.

この発明に係るエレベータの油入緩衝装置においては、作動油を収容したシリンダと、シリンダに対して上下方向に伸縮するプランジャと、プランジャを押し上げるように作用する復帰ばねとを備えており、エレベータ昇降路の底部に取り付けられたものにおいて、プランジャの上部が回転可能に取り付けられ、プランジャの側方に延びるサポート部材と、サポート部材の端部に設けられ、サポート部材を上下方向に案内するガイド部材とを備えたものである。 The elevator oil-filled shock absorber according to the present invention includes a cylinder containing hydraulic oil, a plunger that expands and contracts in the vertical direction with respect to the cylinder, and a return spring that acts to push up the plunger. In the one attached to the bottom of the path, the upper part of the plunger is rotatably attached, a support member extending to the side of the plunger, and a guide member provided at an end of the support member for guiding the support member in the vertical direction It is equipped with.

また、この発明に係るエレベータの油入緩衝装置においては、作動油を収容した第１のシリンダと、第１のシリンダに対して上下方向に伸縮する第１のプランジャと、第１のプランジャを押し上げるように作用する復帰ばねとを備えており、エレベータ昇降路の底部に取り付けられた第１の油入緩衝装置と、作動油を収容した第２のシリンダと、第２のシリンダに対して上下方向に伸縮する第２のプランジャとを備えており、エレベータ昇降路の底部に取り付けられた第２の油入緩衝装置と、第１のプランジャの上部が回転可能に取り付けられ、第１のプランジャの側方に延びて第２のプランジャの上部に連結される連結部材とを備えたものである。

In the elevator oil-filled shock absorber according to the present invention, the first cylinder containing hydraulic fluid, the first plunger that expands and contracts in the vertical direction with respect to the first cylinder, and the first plunger are pushed up. And a return spring that acts as described above, and a first oil-filled shock absorber attached to the bottom of the elevator hoistway, a second cylinder containing hydraulic oil, and a vertical direction with respect to the second cylinder and a second plunger which expands and contracts, the second oil-filled shock absorber attached to the bottom of the elevator shaft, the upper portion of the first plunger rotatably mounted on the side of the first plunger And a connecting member connected to the upper part of the second plunger.

この発明によれば、簡素な構造によりプランジャの座屈を抑制でき、安全装置としての信頼性が向上するとともに、緩衝器の小型・軽量化により、コストを低減でき、組立性や据付性を向上させることができる。   According to the present invention, the buckling of the plunger can be suppressed by a simple structure, the reliability as a safety device is improved, the cost can be reduced by reducing the size and weight of the shock absorber, and the assembling property and the installation property are improved. Can be made.

実施の形態１.
図１はこの発明の実施の形態１におけるエレベータの油入緩衝装置の構成を示す断面図である。 Embodiment 1.
1 is a cross-sectional view showing a configuration of an oil-filled shock absorber for an elevator according to Embodiment 1 of the present invention.

図において、１はエレベータかご、２はエレベータ昇降路の底部３に立設されたシリンダ、４はシリンダ２内に充填された作動油、５はシリンダ２の中央部に設けられた制御棒、６は制御棒５の頂部に設けられたばね受け、７はシリンダ２内に挿入され、上下方向に伸縮する中空円筒状のプランジャ、７ａはプランジャ７の下部に穿設されたオリフィス孔で、制御棒５が貫通している。７ｂはプランジャ７の上端部外面に設けられたプランジャ上板、８はプランジャ７内に収納され、プランジャ７を押し上げるように作用する復帰ばねで、その上下端部がプランジャ７の上端部内面及びばね受け６上面にそれぞれ当接している。９はプランジャ上板７ｂの上面に設けられた緩衝材で、エレベータかご１の底部と対向している。１０はプランジャ７の上端部に水平方向に回転可能なように軸受１１を介して取り付けられた水平のサポート部材で、左右方向に延びている。１２はサポート部材１０の両外側端部の外方にそれぞれ垂直方向に延びて配置された左右一対のガイドレールで、昇降路の底部３に立設され、上記シリンダ２及びプランジャ７からなる緩衝器の上下方向の全高長さよりも若干長くなるようにし、かつエレベータかご１と干渉しないように緩衝器から離れた位置に設けられている。１３はサポート部材１０の両外側端部にそれぞれ取り付けられ、上記左右一対のガイドレール１２を挟持して上下方向に摺動するガイドシューである。このガイドレール１２及びガイドシュー１３により、上記サポート部材１０のガイド部材１４を構成している。１５ａはプランジャ上板７ｂの上面に設けられ、軸受１１の一方を保持するための軸受押え、１５ｂはサポート部材１０の下面に設けられ、軸受１１の他方を保持するための軸受押えである。なお、上記の説明では、エレベータかご１の緩衝装置を示したが、釣合いおもりの緩衝装置に適用しても良いことは勿論である。   In the figure, 1 is an elevator car, 2 is a cylinder erected on the bottom 3 of the elevator hoistway, 4 is hydraulic oil filled in the cylinder 2, 5 is a control rod provided in the center of the cylinder 2, 6 Is a spring receiver provided at the top of the control rod 5, 7 is a hollow cylindrical plunger which is inserted into the cylinder 2 and expands and contracts in the vertical direction, 7a is an orifice hole drilled in the lower portion of the plunger 7, and the control rod 5 Has penetrated. 7b is a plunger upper plate provided on the outer surface of the upper end portion of the plunger 7, 8 is a return spring housed in the plunger 7 and acting to push up the plunger 7, and its upper and lower end portions are the upper end inner surface and spring of the plunger 7. Each is in contact with the upper surface of the receiver 6. Reference numeral 9 denotes a cushioning material provided on the upper surface of the plunger upper plate 7b, and faces the bottom of the elevator car 1. A horizontal support member 10 is attached to the upper end portion of the plunger 7 via a bearing 11 so as to be rotatable in the horizontal direction, and extends in the left-right direction. Reference numeral 12 denotes a pair of left and right guide rails that are arranged so as to extend vertically outward from both outer ends of the support member 10. The shock absorber 12 is erected on the bottom 3 of the hoistway and includes the cylinder 2 and the plunger 7. Is provided at a position apart from the shock absorber so as not to interfere with the elevator car 1. Reference numerals 13 denote guide shoes that are attached to both outer ends of the support member 10 and slide in the vertical direction with the pair of left and right guide rails 12 interposed therebetween. The guide rail 12 and the guide shoe 13 constitute a guide member 14 of the support member 10. A bearing retainer 15a is provided on the upper surface of the plunger upper plate 7b and holds one of the bearings 11, and a bearing retainer 15b is provided on the lower surface of the support member 10 and holds the other of the bearings 11. In the above description, the shock absorber for the elevator car 1 is shown, but it is needless to say that the shock absorber may be applied to a counterweight shock absorber.

次に、油入緩衝装置の緩衝、復帰動作について説明する。
エレベータの故障などでかご又は釣合いおもりが下降すると、その底部が緩衝器のプランジャ７上部の緩衝材９と衝突し、プランジャ７は押し下げられる。このとき作動油４はプランジャ７内のオリフィス孔７ａと制御棒５との隙間から上部に噴出する。この噴出する作動油４の流量を制御棒５の断面形状を変えることにより、油入緩衝装置の緩衝行程中の減速特性を制御している。この油入緩衝装置の行程は、ほぼエレベータの速度の二乗に比例するため、高速度のエレベータにおいては、緩衝器の行程も大きくなり、定格速度５４０メートル／分を超えるエレベータにおいては、１．８メートル以上の行程が必要となり、緩衝器の上下方向の全高長さは５メートル程度となる。このように全高が長くなると、緩衝器の動作は不安定となり、かご或いは釣合いおもりが緩衝器に衝突した際、緩衝器の先端に作用する偏荷重によって緩衝器に水平方向の力が作用し、スライド部分には摩擦力が発生して行程が円滑に行われなくなり、緩衝器のバックリング破壊の恐れさえでてくる。 Next, the buffering and returning operations of the oil-filled shock absorber will be described.
When the car or the counterweight descends due to an elevator failure or the like, the bottom of the car collides with the cushioning material 9 on the top of the plunger 7 of the shock absorber, and the plunger 7 is pushed down. At this time, the hydraulic oil 4 is jetted upward from the gap between the orifice hole 7 a in the plunger 7 and the control rod 5. By changing the cross-sectional shape of the control rod 5 with respect to the flow rate of the ejected hydraulic oil 4, the deceleration characteristic during the buffer stroke of the oil-filled shock absorber is controlled. Since the stroke of this oil-filled shock absorber is approximately proportional to the square of the speed of the elevator, the stroke of the shock absorber becomes large in a high-speed elevator, and in the elevator exceeding the rated speed of 540 meters / min, 1.8. A stroke of more than meters is required, and the total height of the shock absorber in the vertical direction is about 5 meters. When the overall height becomes long in this way, the operation of the shock absorber becomes unstable, and when the car or the counterweight collides with the shock absorber, a horizontal force acts on the shock absorber due to the offset load acting on the tip of the shock absorber, A frictional force is generated in the slide portion, so that the stroke is not smoothly performed, and the buckling of the shock absorber may be broken.

この実施の形態１によれば、プランジャ７の緩衝時の動作及び緩衝後の復帰動作において、プランジャ７の上部に軸受１１を介して取り付けられた水平のサポート部材１０が、ガイド部材１４によって上下方向に案内されて動作する。そして、プランジャ７は水平のサポート部材１０及びガイド部材１４によって上下方向に案内されて動作する。プランジャ７の上下動作時、復帰ばね８は圧縮、伸長され、この時ばねの捻り力が発生し、プランジャ７を回転させようとする。しかし、この実施の形態１によれば、プランジャ７は軸受１１により水平のサポート部材１０に回転自在に取り付けられているので、ばねの捻り力が発生しても、サポート部材１０に伝達されることがない。したがって、簡素な構造によりプランジャの座屈を抑制でき、安全装置としての信頼性が向上するとともに、緩衝器の小型・軽量化により、コストを低減でき、組立性や据付性を向上させることができる。   According to the first embodiment, in the operation at the time of buffering of the plunger 7 and the returning operation after the buffering, the horizontal support member 10 attached to the upper part of the plunger 7 via the bearing 11 is Operated by being guided. The plunger 7 is guided in the vertical direction by the horizontal support member 10 and the guide member 14 and operates. When the plunger 7 is moved up and down, the return spring 8 is compressed and extended. At this time, a twisting force of the spring is generated, and the plunger 7 tries to rotate. However, according to the first embodiment, since the plunger 7 is rotatably attached to the horizontal support member 10 by the bearing 11, even if a spring twisting force is generated, it is transmitted to the support member 10. There is no. Therefore, buckling of the plunger can be suppressed with a simple structure, reliability as a safety device can be improved, and cost can be reduced and assembly and installation can be improved by reducing the size and weight of the shock absorber. .

実施の形態２.
図２はこの発明の実施の形態２におけるエレベータの油入緩衝装置の構成を示す断面図である。なお、図中、実施の形態１と同一部分又は相当部分には同一符号を付して説明を省略する。 Embodiment 2.
FIG. 2 is a cross-sectional view showing a configuration of an elevator oil-filled shock absorber according to Embodiment 2 of the present invention. In the figure, the same or corresponding parts as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

上記実施の形態１では、水平のサポート部材１０の両外側端部の外方にそれぞれ垂直方向に延びて配置された左右一対のガイドレール１２を、昇降路の底部３に立設させ、このガイドレール１２及びガイドシュー１３により、サポート部材１０のガイド部材１４を構成しているが、この実施の形態２においては、上記左右一対のガイドレール１２の代わりに、かごガイドレール１６をサポート部材１０のガイド部材として兼用させたものである。なお、釣合いおもりガイドレールを兼用させたものでも良いことは勿論である。   In the first embodiment, a pair of left and right guide rails 12 extending in the vertical direction outward from both outer end portions of the horizontal support member 10 are erected on the bottom portion 3 of the hoistway, and this guide Although the guide member 14 of the support member 10 is configured by the rail 12 and the guide shoe 13, in the second embodiment, the car guide rail 16 is replaced with the pair of left and right guide rails 12. This is also used as a guide member. It goes without saying that a counterweight guide rail may also be used.

実施の形態３.
図３はこの発明の実施の形態３におけるエレベータの油入緩衝装置の構成を示す断面図である。なお、図中、実施の形態１、２と同一部分又は相当部分には同一符号を付して説明を省略する。 Embodiment 3.
FIG. 3 is a cross-sectional view showing a configuration of an elevator oil-filled shock absorber according to Embodiment 3 of the present invention. In the figure, the same or corresponding parts as those in the first and second embodiments are denoted by the same reference numerals and the description thereof is omitted.

上記実施の形態１では、１個の油入緩衝器の場合について示したが、この実施の形態３においては、第１の油入緩衝器１７と第２の油入緩衝器１８とを並列に配置して、各油入緩衝器のプランジャ７のプランジャ上板７ｂ間を連結部材１９で連結したものである。各プランジャ７のプランジャ上板７ｂは連結部材１９に対して回転可能なように軸受１１を介して取り付けられている。これにより、座屈防止用のガイド部材が不要となり、コスト及びスペースを削減することができる。なお、第１の油入緩衝器１７と第２の油入緩衝器１８の双方に復帰ばね８を設けているが、復帰ばね８はどちらか一方に設けたものであっても良い。この時、復帰ばねを設けない方の油入緩衝器のプランジャ７と連結部材１９は、回転可能でなく固定しても良い。   In the first embodiment, the case of one oil-filled shock absorber is shown. However, in this third embodiment, the first oil-filled shock absorber 17 and the second oil-filled shock absorber 18 are connected in parallel. It arrange | positions and it connects between the plunger upper plates 7b of the plunger 7 of each oil-filled buffer with the connection member 19. FIG. The plunger upper plate 7 b of each plunger 7 is attached via a bearing 11 so as to be rotatable with respect to the connecting member 19. Thereby, the guide member for buckling prevention becomes unnecessary, and cost and space can be reduced. In addition, although the return spring 8 is provided in both the 1st oil-filled buffer 17 and the 2nd oil-filled buffer 18, the return spring 8 may be provided in either one. At this time, the plunger 7 and the connecting member 19 of the oil-filled shock absorber not provided with the return spring are not rotatable and may be fixed.

実施の形態４.
図４はこの発明の実施の形態４におけるエレベータの油入緩衝装置のプランジャの上部を示す要部断面図である。なお、図中、実施の形態１と同一部分又は相当部分には同一符号を付して説明を省略する。 Embodiment 4.
FIG. 4 is a cross-sectional view of the main part showing the upper part of the plunger of the elevator oil-filled shock absorber in Embodiment 4 of the present invention. In the figure, the same or corresponding parts as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

この実施の形態４においては、軸受１１とサポート部材１０との取付において、軸受１１の外周とサポート部材１０との間にゴム等からなる弾性部材２０を介在させたものである。
ガイド部材１４と油入緩衝装置とが上下方向に組み付け誤差が生じた場合、サポート部材１０の上下方向の動作とプランジャ７の上下方向の動作の軸芯にずれが生じる。このような場合でも、この実施の形態４の構成によれば、弾性部材２０を介在させたことにより、プランジャ７とサポート部材１０とがこじれることがなく、プランジャ７はガイド部材１４に安定して案内されて上下動することができる。なお、弾性部材２０はプランジャ７のプランジャ上板７ｂと軸受１１内周との間に介在させても良い。また、実施の形態３に対しても、プランジャ７のプランジャ上板７ｂ又は連結部材３３と軸受１１との間に弾性部材２０を介在させても良い。 In the fourth embodiment, in attaching the bearing 11 and the support member 10, an elastic member 20 made of rubber or the like is interposed between the outer periphery of the bearing 11 and the support member 10.
When an assembly error occurs in the vertical direction between the guide member 14 and the oil-filled shock absorber, a deviation occurs in the axis between the vertical movement of the support member 10 and the vertical movement of the plunger 7. Even in such a case, according to the configuration of the fourth embodiment, since the elastic member 20 is interposed, the plunger 7 and the support member 10 are not twisted, and the plunger 7 is stably attached to the guide member 14. Guided can move up and down. The elastic member 20 may be interposed between the plunger upper plate 7b of the plunger 7 and the inner periphery of the bearing 11. Further, also in the third embodiment, the elastic member 20 may be interposed between the plunger upper plate 7 b or the connecting member 33 of the plunger 7 and the bearing 11.

この発明の実施の形態１におけるエレベータの油入緩衝装置の構成を示す断面図である。It is sectional drawing which shows the structure of the oil-filling buffer apparatus of the elevator in Embodiment 1 of this invention. この発明の実施の形態２におけるエレベータの油入緩衝装置の構成を示す断面図である。It is sectional drawing which shows the structure of the oil-filling buffer apparatus of the elevator in Embodiment 2 of this invention. この発明の実施の形態３におけるエレベータの油入緩衝装置の構成を示す断面図である。It is sectional drawing which shows the structure of the oil-filling buffer apparatus of the elevator in Embodiment 3 of this invention. この発明の実施の形態４におけるエレベータの油入緩衝装置のプランジャの上部を示す要部断面図である。It is principal part sectional drawing which shows the upper part of the plunger of the oil-filling buffer apparatus of the elevator in Embodiment 4 of this invention.

符号の説明Explanation of symbols

１ エレベータかご
２ シリンダ
３ 昇降路の底部
４ 作動油
５ 制御棒
６ ばね受け
７ プランジャ
７ａ オリフィス孔
７ｂ プランジャ上板
８ 復帰ばね
９ 緩衝材
１０ 水平サポート部材
１１ 軸受
１２ ガイドレール
１３ ガイドシュー
１４ ガイド部材
１５ａ、１５ｂ 軸受押え
１６ かごガイドレール
１７ 第１の油入緩衝器
１８ 第２の油入緩衝器
１９ 連結部材
２０ 弾性部材 DESCRIPTION OF SYMBOLS 1 Elevator car 2 Cylinder 3 Bottom part of hoistway 4 Hydraulic oil 5 Control rod 6 Spring receiver 7 Plunger 7a Orifice hole 7b Plunger upper plate 8 Return spring 9 Cushioning material 10 Horizontal support member 11 Bearing 12 Guide rail 13 Guide shoe 14 Guide member 15a 15b Bearing retainer 16 Car guide rail 17 First oil-filled shock absorber
18 Second oil-filled shock absorber 19 Connecting member
20 Elastic member

Claims (5)

作動油を収容したシリンダと、前記シリンダに対して上下方向に伸縮するプランジャと、前記プランジャを押し上げるように作用する復帰ばねとを備えており、エレベータ昇降路の底部に取り付けられたエレベータの油入緩衝装置において、
前記プランジャの上部が回転可能に取り付けられ、前記プランジャの側方に延びるサポート部材と、前記サポート部材の端部に設けられ、前記サポート部材を上下方向に案内するガイド部材とを備えたことを特徴とするエレベータの油入緩衝装置。 A cylinder that contains hydraulic oil, a plunger that expands and contracts in the vertical direction with respect to the cylinder, and a return spring that acts to push up the plunger, and that is installed in the bottom of the elevator hoistway. In the shock absorber,
An upper portion of the plunger is rotatably attached, and includes a support member that extends to the side of the plunger, and a guide member that is provided at an end of the support member and guides the support member in the vertical direction. Elevator oil-filled shock absorber. 作動油を収容した第１のシリンダと、前記第１のシリンダに対して上下方向に伸縮する第１のプランジャと、前記第１のプランジャを押し上げるように作用する復帰ばねとを備えており、エレベータ昇降路の底部に取り付けられた第１の油入緩衝装置と、作動油を収容した第２のシリンダと、前記第２のシリンダに対して上下方向に伸縮する第２のプランジャとを備えており、エレベータ昇降路の底部に取り付けられた第２の油入緩衝装置と、前記第１のプランジャの上部が回転可能に取り付けられ、前記第１のプランジャの側方に延びて前記第２のプランジャの上部に連結される連結部材とを備えたことを特徴とするエレベータの油入緩衝装置。 A first cylinder containing hydraulic fluid; a first plunger that expands and contracts in the vertical direction with respect to the first cylinder; and a return spring that acts to push up the first plunger. A first oil-filled shock absorber attached to the bottom of the hoistway, a second cylinder containing hydraulic oil, and a second plunger that expands and contracts vertically with respect to the second cylinder. , A second oil-filled shock absorber attached to the bottom of the elevator hoistway, and an upper portion of the first plunger are rotatably attached, and extend laterally of the first plunger to An elevator oil-filled shock absorber comprising a connecting member connected to an upper portion. 前記ガイド部材は、かごガイドレール又は釣合いおもりガイドレールと、かごガイドレール又は釣合いおもりガイドレールを挟持して上下方向に摺動するガイドシューとを備えたことを特徴とする請求項１記載のエレベータの油入緩衝装置。   2. The elevator according to claim 1, wherein the guide member includes a car guide rail or a counterweight guide rail and a guide shoe that slides in a vertical direction with the car guide rail or the counterweight guide rail interposed therebetween. Oil-filled shock absorber. 前記プランジャと前記サポート部材とを回転可能に取り付ける軸受と、前記軸受と前記プランジャ又は前記サポート部材との間に介在する弾性部材とを備えたことを特徴とする請求項１又は請求項３記載のエレベータの油入緩衝装置。   4. The bearing according to claim 1, further comprising: a bearing for rotatably mounting the plunger and the support member; and an elastic member interposed between the bearing and the plunger or the support member. Elevator oil-filled shock absorber. 前記第１のプランジャと前記連結部材とを回転可能に取り付ける軸受と、前記軸受と前記第１のプランジャ又は前記連結部材との間に介在する弾性部材とを備えたことを特徴とする請求項２記載のエレベータの油入緩衝装置。   3. A bearing for rotatably mounting the first plunger and the connecting member, and an elastic member interposed between the bearing and the first plunger or the connecting member. An oil-filled shock absorber for an elevator as described.
JP2007147969A 2007-06-04 2007-06-04 Elevator oil-filled shock absorber Expired - Fee Related JP4992556B2 (en)

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