JPS58114903U - Hydraulic oil tank pressurization device - Google Patents

Hydraulic oil tank pressurization device

Info

Publication number
JPS58114903U
JPS58114903U JP992682U JP992682U JPS58114903U JP S58114903 U JPS58114903 U JP S58114903U JP 992682 U JP992682 U JP 992682U JP 992682 U JP992682 U JP 992682U JP S58114903 U JPS58114903 U JP S58114903U
Authority
JP
Japan
Prior art keywords
hydraulic oil
oil tank
limit pressure
pressurization device
tank pressurization
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.)
Pending
Application number
JP992682U
Other languages
Japanese (ja)
Inventor
和彦 岩田
Original Assignee
株式会社小松製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社小松製作所 filed Critical 株式会社小松製作所
Priority to JP992682U priority Critical patent/JPS58114903U/en
Publication of JPS58114903U publication Critical patent/JPS58114903U/en
Pending legal-status Critical Current

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  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来例を示す回路図、第２図は本考案の実施例
を示す回路図である。 １は作動油タンク、２は加圧回路、３は電磁切換弁、３
ａは閉位置、３ｂは加圧位置、３ｃは開放位置、４ａは
下限圧検出スイッチ、４ｂは上限圧検出スイッチ。FIG. 1 is a circuit diagram showing a conventional example, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. 1 is a hydraulic oil tank, 2 is a pressurizing circuit, 3 is a solenoid switching valve, 3
a is a closed position, 3b is a pressurized position, 3c is an open position, 4a is a lower limit pressure detection switch, and 4b is an upper limit pressure detection switch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 作動油タンク１に接続する加圧回路２に、閉位置３ａと
加圧位置３ｂと開放位置３Ｃを有する常閉の電磁切換弁
３を介装し、また作動油タンク１に、作動油タンク１内
の許容圧力範囲の下限圧力を検出する下限圧検出スイッ
チ４ａと、上限圧力を検出する上限圧検出スイッチ４ｂ
とを設け、この両スイッチ４ａ、４ｂを上記電磁切換弁
３の電磁作動部３ｄ、３ｅに接続してなることを特徴と
する作動油タンクの加圧装置。A normally closed electromagnetic switching valve 3 having a closed position 3a, a pressurizing position 3b, and an open position 3C is installed in the pressurizing circuit 2 connected to the hydraulic oil tank 1. A lower limit pressure detection switch 4a detects the lower limit pressure of the allowable pressure range, and an upper limit pressure detection switch 4b detects the upper limit pressure.
A pressurizing device for a hydraulic oil tank, characterized in that both switches 4a and 4b are connected to electromagnetic operating parts 3d and 3e of the electromagnetic switching valve 3.
JP992682U 1982-01-29 1982-01-29 Hydraulic oil tank pressurization device Pending JPS58114903U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP992682U JPS58114903U (en) 1982-01-29 1982-01-29 Hydraulic oil tank pressurization device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP992682U JPS58114903U (en) 1982-01-29 1982-01-29 Hydraulic oil tank pressurization device

Publications (1)

Publication Number Publication Date
JPS58114903U true JPS58114903U (en) 1983-08-05

Family

ID=30022530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP992682U Pending JPS58114903U (en) 1982-01-29 1982-01-29 Hydraulic oil tank pressurization device

Country Status (1)

Country Link
JP (1) JPS58114903U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017116080A (en) * 2015-12-26 2017-06-29 日立建機株式会社 Hydraulic oil tank device
JP2020091020A (en) * 2018-12-07 2020-06-11 株式会社フクハラ Life extension system of oil for hydraulic circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017116080A (en) * 2015-12-26 2017-06-29 日立建機株式会社 Hydraulic oil tank device
JP2020091020A (en) * 2018-12-07 2020-06-11 株式会社フクハラ Life extension system of oil for hydraulic circuit

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