JPH0475201U - - Google Patents

Info

Publication number
JPH0475201U
JPH0475201U JP11772990U JP11772990U JPH0475201U JP H0475201 U JPH0475201 U JP H0475201U JP 11772990 U JP11772990 U JP 11772990U JP 11772990 U JP11772990 U JP 11772990U JP H0475201 U JPH0475201 U JP H0475201U
Authority
JP
Japan
Prior art keywords
cylinder
circuit
throttle
operating
line connected
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
JP11772990U
Other languages
Japanese (ja)
Other versions
JP2543587Y2 (en
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 JP1990117729U priority Critical patent/JP2543587Y2/en
Publication of JPH0475201U publication Critical patent/JPH0475201U/ja
Application granted granted Critical
Publication of JP2543587Y2 publication Critical patent/JP2543587Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Description

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

第１図は本考案に係る揺戻し防止回路の第１実
施例回路図。第２図は同じく第２実施例回路図。
第３図は公知油圧回路図。第４図及び第５図は油
圧シリンダ内のロツドがロツド側からチユーブ側
へ移動する時のＢ室及びＡ室内の圧力波形を示す
図。 図において；Ａ……シリンダ室、Ｂ……（チユ
ーブ側の）シリンダ室、ａ〜ｈ……ライン、１…
…シリンダ、２……ロツド、３……コントロール
バルブ、４……リリーフ弁、５……絞り、６……
リリーフ弁、７……絞り、８……絞り、９……リ
リーフ弁、１０……絞り、１１，１２……切換弁
、１３，１４……絞り。 FIG. 1 is a circuit diagram of a first embodiment of the swing back prevention circuit according to the present invention. FIG. 2 is a circuit diagram of the second embodiment.
FIG. 3 is a known hydraulic circuit diagram. 4 and 5 are diagrams showing pressure waveforms in chambers B and A when the rod in the hydraulic cylinder moves from the rod side to the tube side. In the diagram: A...Cylinder chamber, B...Cylinder chamber (on the tube side), a~h...Line, 1...
... Cylinder, 2 ... Rod, 3 ... Control valve, 4 ... Relief valve, 5 ... Throttle, 6 ...
Relief valve, 7... Throttle, 8... Throttle, 9... Relief valve, 10... Throttle, 11, 12... Switching valve, 13, 14... Throttle.

補正 平３．１．２８ 図面の簡単な説明を次のように補正する。 明細書第８ページ１１行目「９……リリーフ弁
」を削除する。Amendment 3.1.28 Hei 3.1.28 The brief description of the drawing is amended as follows. Delete "9...relief valve" on page 8, line 11 of the specification.

Claims (1)

【実用新案登録請求の範囲】 (1) 油圧シヨベルの油圧シリンダを作動させる
回路に於て、シリンダを作動させる為のシリンダ
室のロツド側に接続したラインとチユーブ側のシ
リンダ室Ｂに接続したラインとを直列に配設した
リリーフ弁４と絞り５とにより短絡可能にしたこ
とを特徴とするシリンダの揺戻し防止回路。 (2) チエツクポジシヨンと絞りポジシヨンを有
する切換弁により短絡するようにした請求項第１
項記載のシリンダの揺戻し防止回路。[Scope of Claim for Utility Model Registration] (1) In the circuit for operating the hydraulic cylinder of a hydraulic shovel, a line connected to the rod side of the cylinder chamber for operating the cylinder and a line connected to cylinder chamber B on the tube side A circuit for preventing swing back of a cylinder, characterized in that a short circuit is made possible by a relief valve 4 and a throttle 5 arranged in series. (2) Claim 1, in which the short circuit is caused by a switching valve having a check position and a throttle position.
Cylinder swing-back prevention circuit described in section.
JP1990117729U 1990-11-13 1990-11-13 Cylinder swingback prevention circuit Expired - Lifetime JP2543587Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990117729U JP2543587Y2 (en) 1990-11-13 1990-11-13 Cylinder swingback prevention circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990117729U JP2543587Y2 (en) 1990-11-13 1990-11-13 Cylinder swingback prevention circuit

Publications (2)

Publication Number Publication Date
JPH0475201U true JPH0475201U (en) 1992-06-30
JP2543587Y2 JP2543587Y2 (en) 1997-08-06

Family

ID=31865635

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990117729U Expired - Lifetime JP2543587Y2 (en) 1990-11-13 1990-11-13 Cylinder swingback prevention circuit

Country Status (1)

Country Link
JP (1) JP2543587Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014512497A (en) * 2011-04-19 2014-05-22 ボルボ コンストラクション イクイップメント アーベー Hydraulic circuit for boom control of construction machinery

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330155A (en) * 1976-08-31 1978-03-22 Matsushita Electric Ind Co Ltd Manufacturing method of heat insulating plate
JPS5421570A (en) * 1977-07-19 1979-02-17 Omron Tateisi Electronics Co Electromagnet
JPS57107001U (en) * 1980-12-23 1982-07-01
JPS60167202U (en) * 1984-04-13 1985-11-06 三菱重工業株式会社 hydraulic control valve
JPS6443522U (en) * 1987-09-10 1989-03-15

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330155A (en) * 1976-08-31 1978-03-22 Matsushita Electric Ind Co Ltd Manufacturing method of heat insulating plate
JPS5421570A (en) * 1977-07-19 1979-02-17 Omron Tateisi Electronics Co Electromagnet
JPS57107001U (en) * 1980-12-23 1982-07-01
JPS60167202U (en) * 1984-04-13 1985-11-06 三菱重工業株式会社 hydraulic control valve
JPS6443522U (en) * 1987-09-10 1989-03-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014512497A (en) * 2011-04-19 2014-05-22 ボルボ コンストラクション イクイップメント アーベー Hydraulic circuit for boom control of construction machinery

Also Published As

Publication number Publication date
JP2543587Y2 (en) 1997-08-06

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