JPS60175906U - Work machine hydraulic circuit - Google Patents

Work machine hydraulic circuit

Info

Publication number
JPS60175906U
JPS60175906U JP6435984U JP6435984U JPS60175906U JP S60175906 U JPS60175906 U JP S60175906U JP 6435984 U JP6435984 U JP 6435984U JP 6435984 U JP6435984 U JP 6435984U JP S60175906 U JPS60175906 U JP S60175906U
Authority
JP
Japan
Prior art keywords
work machine
pilot switching
hydraulic circuit
machine hydraulic
machine cylinder
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
JP6435984U
Other languages
Japanese (ja)
Inventor
沖　勲
純 丸山
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 JP6435984U priority Critical patent/JPS60175906U/en
Publication of JPS60175906U publication Critical patent/JPS60175906U/en
Pending legal-status Critical Current

Links

Landscapes

  • Servomotors (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図はこの考案の一実施例を示す断面図、第２図は各
パイロット切換え弁のパイロット圧とスプールストロー
クの関係を示す線図、第３図は従来の油圧回路を示す回
路図である。 １．２は油圧ポンプ、３，４はパイロット切換え弁、５
は作業機シリンダ、９，１０は中立ばね。Fig. 1 is a sectional view showing an embodiment of this invention, Fig. 2 is a diagram showing the relationship between the pilot pressure of each pilot switching valve and the spool stroke, and Fig. 3 is a circuit diagram showing a conventional hydraulic circuit. . 1.2 is a hydraulic pump, 3 and 4 are pilot switching valves, 5
is the work machine cylinder, and 9 and 10 are neutral springs.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 少なくとも２基の油圧ポンプ１，２と、これら油圧ポン
プ１，２より吐出された油圧を合流させて作業機シリン
ダ５へ供給する２個のパイロット切換弁３，４とを具え
、作業機シリンダ５の戻り油を一方のパイロット切換え
弁３よりタンクへドレンさせるものにおいて、上記各パ
イロット切換え弁３，４のうち、作業機シリンダ５から
の戻り油をタンクヘドレンするパイロット切換え弁３の
中立ばね９の取付は荷重を他方のパイロット切換え弁４
の中立ばね１０の取付は荷重より小さくしてなる作業機
油圧回路。The work machine cylinder 5 includes at least two hydraulic pumps 1 and 2 and two pilot switching valves 3 and 4 that combine the hydraulic pressures discharged from these hydraulic pumps 1 and 2 and supply the mixture to the work machine cylinder 5. The neutral spring 9 of the pilot switching valve 3 drains the return oil from the working machine cylinder 5 to the tank among the pilot switching valves 3 and 4. When installing, transfer the load to the other pilot switching valve 4.
The installation of the neutral spring 10 in the work machine hydraulic circuit is made smaller than the load.
JP6435984U 1984-05-02 1984-05-02 Work machine hydraulic circuit Pending JPS60175906U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6435984U JPS60175906U (en) 1984-05-02 1984-05-02 Work machine hydraulic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6435984U JPS60175906U (en) 1984-05-02 1984-05-02 Work machine hydraulic circuit

Publications (1)

Publication Number Publication Date
JPS60175906U true JPS60175906U (en) 1985-11-21

Family

ID=30595369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6435984U Pending JPS60175906U (en) 1984-05-02 1984-05-02 Work machine hydraulic circuit

Country Status (1)

Country Link
JP (1) JPS60175906U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5066908A (en) * 1973-10-23 1975-06-05
JPS58174704A (en) * 1982-04-07 1983-10-13 Uchida Yuatsu Kiki Kogyo Kk Flow control method in confluence circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5066908A (en) * 1973-10-23 1975-06-05
JPS58174704A (en) * 1982-04-07 1983-10-13 Uchida Yuatsu Kiki Kogyo Kk Flow control method in confluence circuit

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