JPH0367505U - - Google Patents

Info

Publication number
JPH0367505U
JPH0367505U JP12870189U JP12870189U JPH0367505U JP H0367505 U JPH0367505 U JP H0367505U JP 12870189 U JP12870189 U JP 12870189U JP 12870189 U JP12870189 U JP 12870189U JP H0367505 U JPH0367505 U JP H0367505U
Authority
JP
Japan
Prior art keywords
cylinder
valve
agricultural tractor
lift
selection 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
JP12870189U
Other languages
Japanese (ja)
Other versions
JP2513411Y2 (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 JP1989128701U priority Critical patent/JP2513411Y2/en
Publication of JPH0367505U publication Critical patent/JPH0367505U/ja
Application granted granted Critical
Publication of JP2513411Y2 publication Critical patent/JP2513411Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Lifting Devices For Agricultural Implements (AREA)

Description

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

第１図は本考案の実施例を示す油圧回路の図、
第２図はその制御電気回路図、第３図は第１図及
び第２図の油圧回路、電気回路の具体的構成を示
した概略図である。第４図、第５図、第６図はそ
れぞれ異なる従来の油圧回路図を示している。第
７図は農用トラクタに装置されたフロントローダ
ーを示した外観図である。 １……リフトシリンダ、２……ダンプシリンダ
、３……シリンダ選択弁、４……手動式方向制御
弁、５……油圧ポンプ、６……手動式方向制御弁
の操作レバー、１２……リフトアーム、１３……
作業機、１４……電源、１５……タンク、３ｘ，
３ｙ，３ｚ……シリンダ選択弁の各ポジシヨン、
４ａ，４ｂ，４ｃ……手動式方向制御弁の各ポジ
シヨン、Ｒ１，Ｒ２……リレー、ｒ１，ｒ１′，
ｒ２……リレー接点、ＳＯＬＡ，ＳＯＬＢ……ソ
レノイド、Ｔ……農用トラクタ、Ｆ……フロント
ローダー。 FIG. 1 is a diagram of a hydraulic circuit showing an embodiment of the present invention;
FIG. 2 is a control electric circuit diagram thereof, and FIG. 3 is a schematic diagram showing the specific configuration of the hydraulic circuit and electric circuit of FIGS. 1 and 2. FIG. 4, FIG. 5, and FIG. 6 each show different conventional hydraulic circuit diagrams. FIG. 7 is an external view showing a front loader installed on an agricultural tractor. 1...Lift cylinder, 2...Dump cylinder, 3...Cylinder selection valve, 4...Manual directional control valve, 5...Hydraulic pump, 6...Manual directional control valve operation lever, 12...Lift Arm, 13...
Work equipment, 14...power supply, 15...tank, 3x,
3y, 3z... each position of the cylinder selection valve,
4a, 4b, 4c...Each position of manual directional control valve, R1 , R2 ...Relay, r1 , r1 ',
r 2 ...Relay contact, SOLA, SOLB...Solenoid, T...Agricultural tractor, F...Front loader.

Claims (1)

【実用新案登録請求の範囲】 農用トラクタに装着されるリフトアームを昇降
させるリフトシリンダと、上記リフトアームの先
端部に装着された作業機を駆動させるダンプシリ
ンダと、上記両シリンダが接続され、両シリンダ
を択一的に選択するシリンダ選択弁と、上記シリ
ンダ選択弁に接続され、トラクタ側より油圧ポン
プにて吐出される作動油を正送り、中立、逆送り
の各ポジシヨンで切り換える方向制御弁からなる
農用トラクタに装着するフロントローダー用油圧
回路において、 上記シリンダ選択弁として、リフトシリンダ用
のフロートポジシヨンを有する両方向電磁式の３
位置制御弁を用いたことを特徴とする農用トラク
タに装着するフロントローダー用油圧回路。[Scope of Claim for Utility Model Registration] A lift cylinder that raises and lowers a lift arm attached to an agricultural tractor, a dump cylinder that drives a working machine attached to the tip of the lift arm, and both cylinders are connected, and both cylinders are connected to each other. A cylinder selection valve that selectively selects a cylinder; and a directional control valve that is connected to the cylinder selection valve and switches the hydraulic fluid discharged from the tractor side by a hydraulic pump between forward, neutral, and reverse positions. In the hydraulic circuit for a front loader installed on an agricultural tractor, the cylinder selection valve is a two-way electromagnetic three-way valve with a float position for the lift cylinder.
A hydraulic circuit for a front loader installed on an agricultural tractor, characterized by using a position control valve.
JP1989128701U 1989-11-02 1989-11-02 Hydraulic circuit for front loader to be mounted on agricultural tractor Expired - Lifetime JP2513411Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989128701U JP2513411Y2 (en) 1989-11-02 1989-11-02 Hydraulic circuit for front loader to be mounted on agricultural tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989128701U JP2513411Y2 (en) 1989-11-02 1989-11-02 Hydraulic circuit for front loader to be mounted on agricultural tractor

Publications (2)

Publication Number Publication Date
JPH0367505U true JPH0367505U (en) 1991-07-02
JP2513411Y2 JP2513411Y2 (en) 1996-10-09

Family

ID=31676391

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989128701U Expired - Lifetime JP2513411Y2 (en) 1989-11-02 1989-11-02 Hydraulic circuit for front loader to be mounted on agricultural tractor

Country Status (1)

Country Link
JP (1) JP2513411Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004362361A (en) * 2003-06-05 2004-12-24 Ntt Docomo Inc Image output device, mobile communication terminal, and program

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622805U (en) * 1985-06-20 1987-01-09
JPH01137022A (en) * 1987-11-18 1989-05-30 Sanyo Kiki Kk Oil-pressure drive circuit for parallel movement of loader attachment for agricultural tractor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622805U (en) * 1985-06-20 1987-01-09
JPH01137022A (en) * 1987-11-18 1989-05-30 Sanyo Kiki Kk Oil-pressure drive circuit for parallel movement of loader attachment for agricultural tractor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004362361A (en) * 2003-06-05 2004-12-24 Ntt Docomo Inc Image output device, mobile communication terminal, and program

Also Published As

Publication number Publication date
JP2513411Y2 (en) 1996-10-09

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