JPS5841798U - Hydraulic circuit of lift cylinder in forklift etc. - Google Patents

Hydraulic circuit of lift cylinder in forklift etc.

Info

Publication number
JPS5841798U
JPS5841798U JP13426281U JP13426281U JPS5841798U JP S5841798 U JPS5841798 U JP S5841798U JP 13426281 U JP13426281 U JP 13426281U JP 13426281 U JP13426281 U JP 13426281U JP S5841798 U JPS5841798 U JP S5841798U
Authority
JP
Japan
Prior art keywords
hydraulic circuit
lift cylinder
relief valve
valve
forklift
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
JP13426281U
Other languages
Japanese (ja)
Inventor
青木　完治
Original Assignee
三菱重工業株式会社
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 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to JP13426281U priority Critical patent/JPS5841798U/en
Publication of JPS5841798U publication Critical patent/JPS5841798U/en
Pending legal-status Critical Current

Links

Landscapes

  • Forklifts And Lifting Vehicles (AREA)
  • Fluid-Pressure Circuits (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図は従来のフォークリフトの概要およびその荷重作
用を示す概要図、第２図は本案の第１実施例を示すフォ
ークリフトにおける油圧回路図、第３図は第２図の実施
例におけるマストに取付けられた高揚点検出用のスイッ
チ配置図、第４図は第２図の実施例における電気回路図
、第５図は第２図の油圧状態説明図、第６図は本案の第
２実施例を示すその油圧回路図である。 ａ：アウタマスト、ｂ＝インナマスト、Ｃ１，Ｃ２：リ
フトシリンダ、ｄｌ、ｄ２：リフトチエン、ｆ：架台、
ｅｌ。 Ｃ２：磁気式スイッチ、Ｃ３：磁石、Ｒ：リレー、Ｒ，
、Ｒ２：リレーの閉接点、Ｓｌ：電磁ソレノイド、Ｓ：
電磁弁、Ａ：油圧源、１：フローデイバイダ、２：切換
弁、３：メインリリーフ弁、８：第２のリリーフ弁、１
１゜１２：流路、１３：第１の分岐路、１４．１４’　
　：第２の分岐路。Fig. 1 is a schematic diagram showing the outline of a conventional forklift and its load action, Fig. 2 is a hydraulic circuit diagram of a forklift showing the first embodiment of the present invention, and Fig. 3 is a diagram showing the installation on the mast in the embodiment of Fig. 2. Fig. 4 is an electric circuit diagram for the embodiment shown in Fig. 2, Fig. 5 is an explanatory diagram of the oil pressure state in Fig. 2, and Fig. 6 shows the second embodiment of the present invention. FIG. a: Outer mast, b = Inner mast, C1, C2: Lift cylinder, dl, d2: Lift chain, f: Frame,
el. C2: Magnetic switch, C3: Magnet, R: Relay, R,
, R2: Relay closing contact, Sl: Electromagnetic solenoid, S:
Solenoid valve, A: Hydraulic source, 1: Flow divider, 2: Switching valve, 3: Main relief valve, 8: Second relief valve, 1
1° 12: Flow path, 13: First branch path, 14.14'
:Second branch road.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] メインリリーフ弁によって回路の最大圧が設定されてい
る油圧回路を備えたマストのリフトシリンダにおいて、
前記油圧回路に設けた分岐路に前記メインリリーフ弁よ
りも低いセット圧の第２のリリーフ弁を配設するととも
に、前記マストの高揚時に動作されて前記分岐路を連通
せしめる電磁弁を前記第２のＩＪ　ＩＪ−フ弁に併設し
て分岐路に配設した構成に特徴を有す乞フォークリフト
等におけるリフトシリンダの油圧回路。In the lift cylinder of a mast with a hydraulic circuit in which the maximum pressure of the circuit is set by the main relief valve,
A second relief valve having a set pressure lower than that of the main relief valve is disposed in a branch passage provided in the hydraulic circuit, and a solenoid valve that is operated when the mast is raised to connect the branch passage is connected to the second relief valve. A hydraulic circuit for a lift cylinder in a forklift, etc., which is characterized by a configuration in which it is arranged in a branch road alongside an IJ valve.
JP13426281U 1981-09-11 1981-09-11 Hydraulic circuit of lift cylinder in forklift etc. Pending JPS5841798U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13426281U JPS5841798U (en) 1981-09-11 1981-09-11 Hydraulic circuit of lift cylinder in forklift etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13426281U JPS5841798U (en) 1981-09-11 1981-09-11 Hydraulic circuit of lift cylinder in forklift etc.

Publications (1)

Publication Number Publication Date
JPS5841798U true JPS5841798U (en) 1983-03-19

Family

ID=29927691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13426281U Pending JPS5841798U (en) 1981-09-11 1981-09-11 Hydraulic circuit of lift cylinder in forklift etc.

Country Status (1)

Country Link
JP (1) JPS5841798U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014132732A1 (en) * 2013-02-26 2014-09-04 カヤバ工業株式会社 Actuator unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4915650U (en) * 1972-05-16 1974-02-08
JPS5511908B2 (en) * 1974-05-31 1980-03-28

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4915650U (en) * 1972-05-16 1974-02-08
JPS5511908B2 (en) * 1974-05-31 1980-03-28

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014132732A1 (en) * 2013-02-26 2014-09-04 カヤバ工業株式会社 Actuator unit
JP2014163452A (en) * 2013-02-26 2014-09-08 Kayaba Ind Co Ltd Actuator
US10150488B2 (en) 2013-02-26 2018-12-11 Kyb Corporation Actuator unit

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