JPS5841770U

JPS5841770U - Hydraulic elevator drive device

Info

Publication number: JPS5841770U
Application number: JP13779081U
Authority: JP
Inventors: 安田　邦夫
Original assignee: 株式会社東芝
Priority date: 1981-09-17
Filing date: 1981-09-17
Publication date: 1983-03-19
Also published as: JPS6132945Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は油圧エレベータの一例を示す概略図、第２図及
び第３図は従来のパワーユニット装置を示す平面図及び
正面図、第４図は同じく連通接続部の拡大断面図、第５
図〜第９図は本考案の一実施例を示すもので第５図は正
面図、第６図は油面検知器の構成図、第７図１ま制御回
路図、第８図及び第９図は動作説明図である。３ａ、　　３ｂ−−−パワーユニット、１１ａ、　　１
　ｌｂ−・・油タンク、１４・・・油圧ポンプ、１５・
・・流量制御弁、２３・・・油面検知器、２４・・・回
動アーム、２４ａ・・・フロート、２５・・・リミット
スイッチ。第６図［ＮFig. 1 is a schematic diagram showing an example of a hydraulic elevator, Figs. 2 and 3 are a plan view and a front view showing a conventional power unit device, Fig. 4 is an enlarged sectional view of the communication connection part, and Fig. 5
Figures to Figures 9 show one embodiment of the present invention. Figure 5 is a front view, Figure 6 is a configuration diagram of an oil level detector, Figure 7 is a control circuit diagram, and Figures 8 and 9. The figure is an explanatory diagram of the operation. 3a, 3b---power unit, 11a, 1
lb-... Oil tank, 14... Hydraulic pump, 15...
...Flow rate control valve, 23...Oil level detector, 24...Rotating arm, 24a...Float, 25...Limit switch. Figure 6 [N

Claims

[Scope of utility model registration request]

(1) Using multiple power units each having an oil tank, a pump that pressure-feeds the oil in the tank, and a flow control valve that controls the flow rate of the oil sent by the pump and the flow rate of the oil returned to the tank. When the car is going up, the oil sent from each power unit is combined and sent to the hydraulic jack for raising and lowering the car, and when the car is going down, the return oil pushed out from the hydraulic jack by the car's own weight is divided and In the power unit device that returns the oil to the oil tank of the power unit, each of the power units includes an oil level detector that detects when the oil level in the oil tank reaches a predetermined level;
A power unit device for a hydraulic elevator characterized in that a control circuit is provided for detecting the oil level of the oil level detector and controlling the flow rate control valve to reduce the flow rate of the recirculated oil returning into the oil tank. .

(2) The power unit device for a hydraulic elevator according to claim 1, wherein the oil level detector comprises a float that is pushed up by the oil level and a limit switch that is opened and closed by the operation of the float.