JP2016003080A - Operation confirmation method of fall prevention valve of hydraulic type elevator, and operation confirmation device - Google Patents
Operation confirmation method of fall prevention valve of hydraulic type elevator, and operation confirmation device Download PDFInfo
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Abstract
Description
本発明は、乗かごを下降させる油圧ジャッキの作動を停止させる際に活用される落下防止弁が、正常に動作するか否かを確認する油圧式エレベータの落下防止弁の動作確認方法、及び動作確認装置に関する。 The present invention relates to a method for confirming the operation of a fall prevention valve of a hydraulic elevator that confirms whether or not a fall prevention valve utilized when stopping the operation of a hydraulic jack that lowers a passenger car operates normally. It relates to a confirmation device.
エレベータの更なる安全確保のために、油圧式エレベータに、主制御弁の異常動作時に乗かごを下降させる油圧ジャッキを構成する油圧シリンダの作動を停止させる落下防止弁を備えた構成が特許文献１に開示されている。 In order to ensure further safety of the elevator, a configuration in which a hydraulic elevator is provided with a fall prevention valve that stops the operation of a hydraulic cylinder that constitutes a hydraulic jack that lowers the car when the main control valve operates abnormally is disclosed in Patent Document 1. Is disclosed.
この特許文献１に開示された従来の油圧式エレベータは、乗かごを昇降させる油圧ジャッキを構成する油圧シリンダと、この油圧シリンダを作動させる圧油を供給する油圧ポンプと、この油圧ポンプと油圧シリンダとを連絡する主管路に設けられ、油圧シリンダの作動を制御する主制御弁を構成する主弁装置とを備えている。また、この従来技術は、主弁装置と油圧シリンダとの間に配置され、主弁装置の異常動作時に乗かごを下降させる油圧シリンダの作動を停止させる落下防止弁を含む安全装置を備えている。 The conventional hydraulic elevator disclosed in Patent Document 1 includes a hydraulic cylinder that constitutes a hydraulic jack that raises and lowers a passenger car, a hydraulic pump that supplies pressure oil that operates the hydraulic cylinder, and the hydraulic pump and the hydraulic cylinder. And a main valve device constituting a main control valve for controlling the operation of the hydraulic cylinder. The prior art also includes a safety device that is disposed between the main valve device and the hydraulic cylinder, and includes a fall prevention valve that stops the operation of the hydraulic cylinder that lowers the passenger car when the main valve device operates abnormally. .
ところで、乗かごを昇降させる油圧ジャッキ、及びこの油圧ジャッキを制御する主制御弁を有する既設の油圧式エレベータに、更なる安全確保のために特許文献１に示されるような、逆止弁位置と流量制御弁位置とを有する落下防止弁を新たに追加して設けた場合、主制御弁の動作に制約を与えないために、主制御弁が流量制御弁位置に切り換えられたときには、同様に落下防止弁も流量制御位置に切り換えられるように制御し、主制御弁が逆止弁位置に切り換えられたときには、落下防止弁も同様に逆止弁位置に切り換え制御することになる。 By the way, in order to ensure further safety, a check valve position as shown in Patent Document 1 is provided on an existing hydraulic elevator having a hydraulic jack for raising and lowering the passenger car and a main control valve for controlling the hydraulic jack. When a new fall prevention valve with a flow control valve position is added, when the main control valve is switched to the flow control valve position in order to prevent restrictions on the operation of the main control valve, The prevention valve is also controlled so as to be switched to the flow control position, and when the main control valve is switched to the check valve position, the fall prevention valve is similarly switched to the check valve position.
ここで、落下防止弁を追加して設けた場合、この落下防止弁が正常に動作するか否かを確認することが必要になるが、この確認作業は、落下防止弁を、乗かごを下降させる油圧ジャッキの作動を停止させる逆止弁位置に切り換えた状態で、主制御弁を開放位置である流量制御弁位置に切り換えて、このときの乗かごの下降の有無を見ることになる。したがってこの落下防止弁の確認作業のためには、既設の油圧式エレベータの運転制御プログラムの大幅な改造、または運転制御プログラムの一式交換が必要になる。これに伴って改造作業工数、及び作業コストが多大なものとなる。また、改造作業に時間がかかることから、油圧式エレベータの停止時間が長くなり、エレベータ利用者に対するサービス性が著しく低下する虞がある。 Here, if a drop prevention valve is additionally provided, it is necessary to check whether or not this drop prevention valve operates normally. This confirmation work involves lowering the drop prevention valve and the car. The main control valve is switched to the flow control valve position, which is the open position, in the state where the check valve position for stopping the operation of the hydraulic jack to be stopped is switched, and whether or not the car is lowered at this time is observed. Therefore, in order to confirm the fall prevention valve, it is necessary to significantly modify the operation control program of the existing hydraulic elevator or to replace the operation control program. Along with this, the man-hours for remodeling work and the work cost become enormous. Moreover, since it takes time for the remodeling work, the stop time of the hydraulic elevator becomes long, and there is a possibility that the serviceability for the elevator user is remarkably lowered.
本発明は、前述した従来技術における実情からなされたもので、その目的は、既設の油圧式エレベータに落下防止弁を追加して設ける場合であっても、落下防止弁が正常に動作するか否かの確認を比較的容易に行うことができる油圧式エレベータの落下防止弁の動作確認方法、及び動作確認装置を提供することにある。 The present invention has been made based on the actual situation in the prior art described above, and its purpose is to determine whether or not the fall prevention valve operates normally even when the fall prevention valve is additionally provided in the existing hydraulic elevator. It is an object of the present invention to provide an operation confirmation method and an operation confirmation device for a fall prevention valve of a hydraulic elevator that can be relatively easily confirmed.
前記目的を達成するために、本発明に係る油圧式エレベータの落下防止弁の動作確認方法は、乗かごと、この乗かごを昇降させる油圧ジャッキと、この油圧ジャッキを作動させる圧油を供給する油圧ポンプと、この油圧ポンプと前記油圧ジャッキとを連絡する主管路に設けられ、前記油圧ジャッキの作動を制御する主制御弁と、逆止弁位置と流量制御弁位置を有し、前記主制御弁の異常動作時に逆止弁位置に切り換えられて、前記乗かごを下降させる前記油圧ジャッキの作動を停止させる落下防止弁と、逆止弁位置と流量制御弁位置を有し、停電時にエレベータの電源とは別に設置される電源により流量制御弁位置に切り換えられ、前記乗かごを最寄り階まで下降させる制御を行う停電時着床装置用弁とを備えた油圧式エレベータにあって、前記落下防止弁が正常に動作するか否かを確認する油圧式エレベータの落下防止弁の動作確認方法において、前記落下防止弁を、前記油圧ジャッキの作動を停止させる逆止弁位置に切り換え制御し、この状態で前記停電時着床装置用弁を流量制御弁位置に切り換え制御したときの前記乗かごの下降の有無により、前記落下防止弁が正常に動作するか否かを確認することを特徴としている。 In order to achieve the above object, the hydraulic elevator drop prevention valve operation check method according to the present invention supplies a car, a hydraulic jack for raising and lowering the car, and pressure oil for operating the hydraulic jack. A main control valve for controlling an operation of the hydraulic jack, a check valve position, and a flow control valve position, the main control valve being provided in a main pipe line connecting the hydraulic pump and the hydraulic jack; The valve is switched to a check valve position when the valve operates abnormally, and has a fall prevention valve that stops the operation of the hydraulic jack that lowers the car, a check valve position, and a flow control valve position. In a hydraulic elevator equipped with a valve for landing device at the time of power failure that is switched to a flow control valve position by a power source installed separately from a power source and performs control to lower the car to the nearest floor, In the method for confirming the operation of the fall prevention valve of a hydraulic elevator that confirms whether the fall prevention valve operates normally, the fall prevention valve is controlled to be switched to a check valve position that stops the operation of the hydraulic jack. In this state, it is confirmed whether or not the fall prevention valve operates normally according to whether or not the car is lowered when the landing device valve at the time of power failure is switched to the flow control valve position. It is said.
また、前述した油圧式エレベータの落下防止弁の動作確認方法が適用される本発明に係る油圧式エレベータの落下防止弁の動作確認装置は、前記落下防止弁を、前記主制御弁と前記油圧ジャッキとの間に位置する前記主管路部分に設け、前記停電時着床装置用弁を、分岐管路に設け、前記分岐管路の一端を、前記主制御弁と前記落下防止弁との間に位置する前記主管路部分に接続し、前記分岐管路の他端を、前記主制御弁と前記油圧ポンプとの間に位置する前記主管路部分に接続したことを特徴としている。 Further, the apparatus for confirming the operation of a fall prevention valve for a hydraulic elevator according to the present invention, to which the above-described method for confirming the operation of a fall prevention valve for a hydraulic elevator is applied, includes the fall prevention valve, the main control valve and the hydraulic jack. Provided in the main pipeline portion located between the main power control valve and the fall prevention valve, and the landing gear valve for power failure is provided in the branch pipeline, and one end of the branch pipeline is provided between the main control valve and the fall prevention valve. It connects to the said main pipeline part located, and the other end of the said branch pipeline is connected to the said main pipeline part located between the said main control valve and the said hydraulic pump.
本発明に係る油圧式エレベータの落下防止弁の動作確認方法、及び動作確認装置によれば、既設の油圧式エレベータに落下防止弁を追加して設ける場合であっても、油圧式エレベータに通常設けられる既設の停電時着床装置用弁を、落下防止弁の動作確認に活用することから、既設の主制御弁に関係する運転制御プログラムの改造、または交換を要することがなく、落下防止弁が正常に動作するか否かの確認を停電時着床装置用弁の切り換え制御を介して比較的容易に行うことができる。これにより本発明は、落下防止弁の動作の確認に要する作業工数及び作業コストを従来に比べて低減させることができる。また本発明は、落下防止弁の動作の確認に際して、エレベータの停止時間を短くすることができ、これによりエレベータ利用者に対するサービス性を従来よりも向上させることができる。 According to the operation check method and the operation check device for the hydraulic elevator drop prevention valve according to the present invention, even if the fall prevention valve is additionally provided to the existing hydraulic elevator, the hydraulic elevator is normally provided. The existing anti-falling floor valve is used to check the operation of the fall prevention valve.Therefore, there is no need to modify or replace the operation control program related to the existing main control valve. It can be confirmed relatively easily through the switching control of the valve for the landing device at the time of power failure. Thereby, this invention can reduce the work man-hour and work cost which are required for confirmation of operation | movement of a fall prevention valve compared with the past. Further, according to the present invention, when the operation of the fall prevention valve is confirmed, the stop time of the elevator can be shortened, whereby the serviceability for the elevator user can be improved as compared with the prior art.
以下、本発明に係る油圧式エレベータの落下防止弁の動作確認方法、及び動作確認装置の実施の形態を図面に基づいて説明する。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a method for confirming the operation of a fall prevention valve for a hydraulic elevator and an operation confirmation device according to the present invention will be described with reference to the drawings.
本発明に係る落下防止弁の動作確認方法が適用される動作確認装置の一実施形態を備えた油圧式エレベータは、図１に示すように、乗かご１と、この乗かご１を昇降させる油圧ジャッキ２と、この油圧ジャッキ２を作動させる油圧パワーユニットＡとを備えている。油圧パワーユニットＡには、油圧ジャッキ２に圧油を供給する油圧ポンプ３、及び油タンク４と、油圧ポンプ３を駆動する電動機５が含まれている。 As shown in FIG. 1, a hydraulic elevator equipped with an embodiment of an operation confirmation device to which an operation check method for a fall prevention valve according to the present invention is applied includes a car 1 and a hydraulic pressure for raising and lowering the car 1. A jack 2 and a hydraulic power unit A for operating the hydraulic jack 2 are provided. The hydraulic power unit A includes a hydraulic pump 3 that supplies pressure oil to the hydraulic jack 2, an oil tank 4, and an electric motor 5 that drives the hydraulic pump 3.
また、油圧パワーユニットＡには、油圧ポンプ３と油圧ジャッキ２とを連絡する主管路６に設けられ、逆止弁位置７ａと流量制御弁位置７ｂを有し、油圧ジャッキ２の作動を制御する主制御弁７と、逆止弁位置８ａと流量制御弁位置８ｂを有し、主制御弁７の故障等の異常動作時に、逆止弁位置８ａに切り換えられて、乗かご１を下降させる油圧ジャッキ２の作動を停止させる落下防止弁（ＵＣＭＰ弁）８とが含まれている。主制御弁７が流量制御弁位置７ｂに切り換えられたときには、同様に落下防止弁８も流量制御位置８ｂに切り換えられるように制御され、主制御弁７が逆止弁位置７ａに切り換えられたときには、落下防止弁８も同様に逆止弁位置８ａに切り換え制御されるようになっている。 Further, the hydraulic power unit A is provided in a main pipeline 6 that connects the hydraulic pump 3 and the hydraulic jack 2, has a check valve position 7 a and a flow control valve position 7 b, and controls the operation of the hydraulic jack 2. Hydraulic jack that has a control valve 7, a check valve position 8 a and a flow control valve position 8 b, and is switched to the check valve position 8 a when the main control valve 7 malfunctions, and lowers the car 1. And a fall prevention valve (UCMP valve) 8 for stopping the operation of No. 2. When the main control valve 7 is switched to the flow control valve position 7b, the fall prevention valve 8 is similarly controlled to be switched to the flow control position 8b, and when the main control valve 7 is switched to the check valve position 7a. Similarly, the fall prevention valve 8 is controlled to be switched to the check valve position 8a.
また、この油圧パワーユニットＡには、逆止弁位置９ａと流量制御弁位置９ｂを有し、停電時にエレベータの電源とは別に設置される電源により流量制御弁位置９ｂに切り換えられ、乗かご１を最寄り階まで下降させる制御を行う停電時着床装置用弁９が含まれている。この停電時着床装置用弁９は、通常の油圧式エレベータに備えられているものである。 The hydraulic power unit A has a check valve position 9a and a flow control valve position 9b, and is switched to the flow control valve position 9b by a power supply installed separately from the elevator power supply in the event of a power failure. There is included a valve 9 for a landing device at the time of power failure for performing control to descend to the nearest floor. This power failure floor landing device valve 9 is provided in a normal hydraulic elevator.
前述した落下防止弁（ＵＣＭＰ弁）８は例えば、主制御弁７と停電時着床装置用弁９を有する既設の油圧式エレベータに、新たに追加して設けられたものである。 The above-described drop prevention valve (UCMP valve) 8 is, for example, newly added to an existing hydraulic elevator having a main control valve 7 and a landing gear valve 9 during a power failure.
また、本実施形態に係る油圧式エレベータの落下防止弁の動作確認装置は、図１に示すように、落下防止弁８を、主制御弁７と油圧ジャッキ２との間に位置する主管路部７部分に設けてある。すなわち、油圧ジャッキ２に対して主制御弁７よりも上流側に、この落下防止弁８を主制御弁７と直列に設けてある。 Moreover, the apparatus for confirming the operation of the fall prevention valve of the hydraulic elevator according to the present embodiment is configured such that the fall prevention valve 8 is disposed between the main control valve 7 and the hydraulic jack 2 as shown in FIG. 7 parts are provided. That is, the fall prevention valve 8 is provided in series with the main control valve 7 on the upstream side of the main control valve 7 with respect to the hydraulic jack 2.
また、停電時着床装置用弁９を、分岐管路１０に設け、この分岐管路１０の一端１０ａを、主制御弁７と落下防止弁８との間に位置する主管路６の部分６ａに接続し、分岐管路１０の他端１０ｂを、主制御弁７と油圧ポンプ３との間に位置する主管路６の部分６ｂに接続した構成にしてある。すなわち、主制御弁７と停電時着床装置用弁９とを並列に設けた構成にしてある。 Further, a valve 9 for a landing device at the time of power failure is provided in the branch pipe 10, and one end 10 a of the branch pipe 10 is disposed between the main control valve 7 and the fall prevention valve 8, a portion 6 a of the main pipe 6. And the other end 10 b of the branch pipe 10 is connected to a portion 6 b of the main pipe 6 located between the main control valve 7 and the hydraulic pump 3. That is, the main control valve 7 and the landing device valve 9 at the time of power failure are provided in parallel.
油圧ジャッキ２を伸長させて乗かご１を上昇させる際には、主制御弁７が逆止弁位置７ａに、落下防止弁８も逆止弁位置８ａに、それぞれ切り換え制御され、油圧ポンプ３から吐出された圧油は、主管路７、主制御弁７の逆止弁位置７ａ、及び落下防止弁８の逆止弁位置８ａを経て、油圧ジャッキ２に供給される。 When the hydraulic jack 2 is extended to raise the car 1, the main control valve 7 is controlled to be switched to the check valve position 7a, and the fall prevention valve 8 is also switched to the check valve position 8a. The discharged pressure oil is supplied to the hydraulic jack 2 through the main line 7, the check valve position 7 a of the main control valve 7, and the check valve position 8 a of the fall prevention valve 8.
油圧ジャッキ２を収縮させて乗かご１を下降させる際には、主制御弁７が流量制御弁位置７ｂに、落下防止弁８も流量制御弁位置８ｂに、それぞれ切り換え制御され、油圧ジャッキ２から排出された油が、主管路６、落下防止弁８の流量制御弁位置８ｂ、主制御弁７の流量制御弁位置７ｂ、油圧ポンプ３を経て、油タンク４に戻される。 When the hydraulic jack 2 is contracted to lower the car 1, the main control valve 7 is switched to the flow control valve position 7b, and the fall prevention valve 8 is also switched to the flow control valve position 8b. The discharged oil is returned to the oil tank 4 through the main pipeline 6, the flow control valve position 8 b of the fall prevention valve 8, the flow control valve position 7 b of the main control valve 7, and the hydraulic pump 3.
なお主に、主制御弁７の流量制御弁位置７ｂの開口面積の変化によって、油圧ジャッキ２に供給される流量、及び油圧ジャッキ２から排出される流量が制御される。すなわち、油圧ジャッキ２の作動速度、及び乗かご２の昇降速度が制御される。 The flow rate supplied to the hydraulic jack 2 and the flow rate discharged from the hydraulic jack 2 are mainly controlled by the change in the opening area of the flow control valve position 7 b of the main control valve 7. That is, the operating speed of the hydraulic jack 2 and the raising / lowering speed of the car 2 are controlled.
また本実施形態は、乗かご２の昇降の間、主制御弁７が故障等の異常を発生し、主制御弁７を逆止弁位置７ａに切り換え制御しても油圧ジャッキ２が停止せず、乗かご２が下降しようとする状況が生じたときには、落下防止弁８の逆止弁位置８ａへの切り換え制御により、油圧ジャッキ２から油タンク４側へ戻される油の流れが阻止され、油圧ジャッキ２及び乗かご２の下降を停止させることができる。 Further, in the present embodiment, the main control valve 7 has an abnormality such as a failure during the raising / lowering of the car 2, and the hydraulic jack 2 does not stop even if the main control valve 7 is switched to the check valve position 7a. When a situation occurs in which the car 2 is going to descend, the flow of oil returned from the hydraulic jack 2 to the oil tank 4 side is blocked by the switching control of the fall prevention valve 8 to the check valve position 8a, and the hydraulic pressure is reduced. The lowering of the jack 2 and the car 2 can be stopped.
前述のような本実施形態に係る落下防止弁の動作確認装置を用いて行われる本発明に係る油圧式エレベータの落下防止弁の動作確認方法の一実施形態は、落下防止弁８を、油圧ジャッキ２の作動を停止させる逆止弁位置８ａに切り換え制御し、この状態で停電時着床装置用弁９を流量制御弁位置９ｂに切り換え制御したときの乗かご１の下降の有無により、落下防止弁８が正常に動作するか否かを確認するものである。 One embodiment of the method for confirming the operation of the fall prevention valve of the hydraulic elevator according to the present invention, which is performed by using the operation confirmation device for the fall prevention valve according to the present embodiment as described above, includes the fall prevention valve 8 and the hydraulic jack. 2 is controlled by switching to the check valve position 8a that stops the operation of No. 2, and in this state, when the landing gear valve 9 is switched to the flow control valve position 9b at the time of power failure, it is prevented from falling depending on whether or not the car 1 is lowered. This is to confirm whether or not the valve 8 operates normally.
このとき、乗かご１が下降しなければ落下防止弁８は正常であることが確認される。また、乗かご１の下降を生じたときには、落下防止弁８に異常を生じていることが確認される。 At this time, if the car 1 does not descend, it is confirmed that the fall prevention valve 8 is normal. Further, when the car 1 is lowered, it is confirmed that the fall prevention valve 8 is abnormal.
以上述べた本実施形態に係る油圧式エレベータの落下防止弁の動作確認方法、及び動作確認装置によれば、既設の油圧式エレベータに落下防止弁８を追加して設ける場合であっても、油圧式エレベータに通常設けられる既設の停電時着床装置用弁９を、落下防止弁８の動作確認に活用することから、既設の主制御弁７に関係する運転制御プログラムの改造、または交換を要することがなく、落下防止弁７が正常に動作するか否かの確認を停電時着床装置用弁９の切り換え制御を介して比較的容易に行うことができる。これにより本実施形態は、落下防止弁７の動作の確認に要する作業工数及び作業コストを低減させることができる。また本実施形態は、落下防止弁８の動作の確認に際して、エレベータの停止時間を短くすることができ、これによりエレベータ利用者に対するサービス性を向上させることができる。 According to the operation check method and operation check device for the hydraulic elevator drop prevention valve according to the present embodiment described above, even if the fall prevention valve 8 is additionally provided to the existing hydraulic elevator, the hydraulic pressure Since the existing valve 9 for power failure at the time of power failure is used for the operation check of the fall prevention valve 8, the operation control program related to the existing main control valve 7 needs to be modified or replaced. Therefore, it can be relatively easily confirmed whether or not the fall prevention valve 7 operates normally through the switching control of the landing device valve 9 at the time of power failure. Thereby, this embodiment can reduce the work man-hour and work cost which are required for confirmation of operation | movement of the fall prevention valve 7. FIG. Further, according to the present embodiment, when the operation of the fall prevention valve 8 is confirmed, the elevator stop time can be shortened, and thereby the serviceability for the elevator user can be improved.
１ 乗かご
２ 油圧ジャッキ
３ 油圧ポンプ
６ 主管路
６ａ 部分
６ｂ 部分
７ 主制御弁
８ 落下防止弁
８ａ 逆止弁位置
９ 停電時着床装置用弁
９ｂ 流量制御弁位置
１０ 分岐管路
１０ａ 一端
１０ｂ 他端
Ａ 油圧パワーユニット
DESCRIPTION OF SYMBOLS 1 Car 2 Hydraulic jack 3 Hydraulic pump 6 Main pipe 6a Part 6b Part 7 Main control valve 8 Fall prevention valve 8a Check valve position 9 Valve for landing device at power failure 9b Flow control valve position 10 Branch pipe 10a One end 10b Other End A Hydraulic power unit
Claims (3)
前記落下防止弁が正常に動作するか否かを確認する油圧式エレベータの落下防止弁の動作確認方法において、
前記落下防止弁を、前記油圧ジャッキの作動を停止させる逆止弁位置に切り換え制御し、
この状態で前記停電時着床装置用弁を流量制御弁位置に切り換え制御したときの前記乗かごの下降の有無により、前記落下防止弁が正常に動作するか否かを確認することを特徴とする油圧式エレベータの落下防止弁の動作確認方法。 A hydraulic jack that raises and lowers the car, and a hydraulic pump that supplies pressure oil that operates the hydraulic jack; and a main pipe that connects the hydraulic pump and the hydraulic jack. A main control valve for controlling the operation, and an operation of the hydraulic jack that has a check valve position and a flow control valve position and is switched to the check valve position when the main control valve operates abnormally to lower the car The valve has a check valve position, a check valve position, and a flow control valve position, and is switched to the flow control valve position by a power supply installed separately from the elevator power supply in the event of a power failure, and the car is lowered to the nearest floor In a hydraulic elevator equipped with a valve for landing device at the time of power failure to perform control,
In the operation check method of the fall prevention valve of the hydraulic elevator for checking whether or not the fall prevention valve operates normally,
The fall prevention valve is controlled to switch to a check valve position for stopping the operation of the hydraulic jack,
In this state, whether or not the fall prevention valve operates normally is confirmed based on whether or not the elevator car is lowered when the landing device valve at the time of power failure is switched to the flow control valve position. Confirming the operation of the fall prevention valve of the hydraulic elevator.
前記落下防止弁を、前記主制御弁と前記油圧ジャッキとの間に位置する前記主管路部分に設け、
前記停電時着床装置用弁を、分岐管路に設け、
前記分岐管路の一端を、前記主制御弁と前記落下防止弁との間に位置する前記主管路部分に接続し、
前記分岐管路の他端を、前記主制御弁と前記油圧ポンプとの間に位置する前記主管路部分に接続したことを特徴とする油圧式エレベータの落下防止弁の動作確認装置。 In the apparatus for confirming the operation of the fall prevention valve of the hydraulic elevator, to which the operation confirmation method of the fall prevention valve of the hydraulic elevator according to claim 1 is applied,
The fall prevention valve is provided in the main pipeline portion located between the main control valve and the hydraulic jack,
The power stop valve for the power failure is provided in the branch pipe,
One end of the branch pipe is connected to the main pipe portion located between the main control valve and the fall prevention valve,
The apparatus for confirming the operation of a fall prevention valve for a hydraulic elevator, characterized in that the other end of the branch pipe is connected to the main pipe portion located between the main control valve and the hydraulic pump.
前記落下防止弁は、前記主制御弁と前記停電時着床装置用弁を有する既設の油圧式エレベータに、新たに追加して設けられたものから成ることを特徴とする油圧式エレベータの落下防止弁の動作確認装置。 In the operation check device for the fall prevention valve of the hydraulic elevator according to claim 2,
The fall prevention valve is configured to be newly added to an existing hydraulic elevator having the main control valve and the valve for landing device at the time of power failure. Valve operation check device.
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