JPS6391703U - - Google Patents

Info

Publication number
JPS6391703U
JPS6391703U JP18658286U JP18658286U JPS6391703U JP S6391703 U JPS6391703 U JP S6391703U JP 18658286 U JP18658286 U JP 18658286U JP 18658286 U JP18658286 U JP 18658286U JP S6391703 U JPS6391703 U JP S6391703U
Authority
JP
Japan
Prior art keywords
chamber
cylinder
main passage
communicated
switching valve
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.)
Granted
Application number
JP18658286U
Other languages
English (en)
Other versions
JPH0512481Y2 (ja
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 filed Critical
Priority to JP1986186582U priority Critical patent/JPH0512481Y2/ja
Publication of JPS6391703U publication Critical patent/JPS6391703U/ja
Application granted granted Critical
Publication of JPH0512481Y2 publication Critical patent/JPH0512481Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Lifting Devices For Agricultural Implements (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

【図面の簡単な説明】
図面第1図はこの考案の実施例を示す回路図、
第2図は切換弁の他の実施例を示す記号図、第3
図は従来装置の回路図である。 P……ポンプ、8,9……メイン通路、V……
切換弁、〜……第1〜3切換位置、S,S
……第1、2シリンダ、16,17……ボトム
側室、19,18……ロツド側室。

Claims (1)

    【実用新案登録請求の範囲】
  1. 正転方向と逆転方向とに回転可能にしたポンプ
    に、一対のメイン通路を接続し、一方のメイン通
    路には切換弁を接続するとともに、第1シリンダ
    の一方の室は上記切換弁を介して一方のメイン通
    路に接続し、第2シリンダの一方の室及び他方の
    室のそれぞれは上記切換弁を介して一方のメイン
    通路と他方のメイン通路とに接続し、しかも、こ
    の他方のメイン通路は上記第1シリンダの他方の
    室に直接連通させてなり、かつ、上記切換弁は、
    第2シリンダの両室を閉塞するかあるいは少なく
    とも一方の室を閉塞し他方の室をタンクに連通さ
    せるとともに、一方のメイン通路と第1シリンダ
    の一方の室とを連通させる第1切換位置と、第2
    シリンダの両室をタンクに連通させるとともに、
    一方のメイン通路と第1シリンダの一方の室とを
    連通させる第2切換位置と、第2シリンダの一方
    の室を一方のメイン通路を連通させ、他方の室を
    他方のメイン通路に連通させる第3切換位置とに
    切り換え可能にしたシリンダの制御装置。
JP1986186582U 1986-12-03 1986-12-03 Expired - Lifetime JPH0512481Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986186582U JPH0512481Y2 (ja) 1986-12-03 1986-12-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986186582U JPH0512481Y2 (ja) 1986-12-03 1986-12-03

Publications (2)

Publication Number Publication Date
JPS6391703U true JPS6391703U (ja) 1988-06-14
JPH0512481Y2 JPH0512481Y2 (ja) 1993-03-31

Family

ID=31136267

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986186582U Expired - Lifetime JPH0512481Y2 (ja) 1986-12-03 1986-12-03

Country Status (1)

Country Link
JP (1) JPH0512481Y2 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109706866A (zh) * 2018-12-21 2019-05-03 广东易山重工股份有限公司 一种洗扫车无级调速节能液压系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55115606A (en) * 1979-02-26 1980-09-05 Hitachi Constr Mach Co Ltd Closed hydraulic circuit for controlling operation of pump
JPS5659006A (en) * 1979-10-19 1981-05-22 Hitachi Constr Mach Co Ltd Controlling method of hydraulic circuit for controlling pump
JPS6175129U (ja) * 1984-10-24 1986-05-21

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55115606A (en) * 1979-02-26 1980-09-05 Hitachi Constr Mach Co Ltd Closed hydraulic circuit for controlling operation of pump
JPS5659006A (en) * 1979-10-19 1981-05-22 Hitachi Constr Mach Co Ltd Controlling method of hydraulic circuit for controlling pump
JPS6175129U (ja) * 1984-10-24 1986-05-21

Also Published As

Publication number Publication date
JPH0512481Y2 (ja) 1993-03-31

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