JPS61138771U - - Google Patents

Info

Publication number
JPS61138771U
JPS61138771U JP2372285U JP2372285U JPS61138771U JP S61138771 U JPS61138771 U JP S61138771U JP 2372285 U JP2372285 U JP 2372285U JP 2372285 U JP2372285 U JP 2372285U JP S61138771 U JPS61138771 U JP S61138771U
Authority
JP
Japan
Prior art keywords
hydraulic
steering
lifting
piston rod
lowering
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
JP2372285U
Other languages
Japanese (ja)
Other versions
JPH0323421Y2 (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 JP1985023722U priority Critical patent/JPH0323421Y2/ja
Priority to US06/819,860 priority patent/US4664210A/en
Publication of JPS61138771U publication Critical patent/JPS61138771U/ja
Application granted granted Critical
Publication of JPH0323421Y2 publication Critical patent/JPH0323421Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Transplanting Machines (AREA)

Description

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

第１図は本考案の油圧式操向装置を付した乗用
田植機の全体側面図。第２図は本考案の油圧回路
図。第３図は油圧バルブ装置をタンデムセンター
形とした場合の油圧バルブ装置とコンビネーシヨ
ンバルブ装置の油圧回路図。第４図はリフト圧Ｐ
２と操向用油圧シリンダー８の出力圧力ＰＡ，Ｐ
ａの関係を示すグラフである。 Ａ，Ａ′……操向用油圧バルブ装置、Ｂ……コ
ンビネーシヨンバルブ装置、Ｃ……作業機昇降用
油圧装置、Ｄ……植付装置、２……ステアリング
ハンドル、３……ピツトマンアーム、４……ベル
クランクアーム（ナツクルアーム操作部材）、８
……操向用油圧シリンダー、１２……ピストンロ
ツド。 FIG. 1 is an overall side view of a riding rice transplanter equipped with a hydraulic steering device according to the present invention. Figure 2 is a hydraulic circuit diagram of the present invention. FIG. 3 is a hydraulic circuit diagram of a hydraulic valve device and a combination valve device when the hydraulic valve device is of a tandem center type. Figure 4 shows lift pressure P
2 and the output pressure PA, P of the steering hydraulic cylinder 8
It is a graph showing the relationship between a. A, A'...Hydraulic valve device for steering, B...Combination valve device, C...Hydraulic device for lifting and lowering work equipment, D...Planting device, 2...Steering handle, 3...Pittman arm, 4 ...Bell crank arm (Natsukuru arm operating member), 8
...Hydraulic cylinder for steering, 12...Piston rod.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ピツトマンアームとナツクルアーム操作部材の
間に、操向用油圧バルブ装置を介装し、該ナツク
ルアーム操作部材と機体フレームの間に、片ピス
トンロツドの操向用油圧シリンダーを介装し、油
圧ポンプと、操向用油圧装置と、作業機昇降用油
圧装置を直列に配置したものにおいて、ピストン
ロツド側の油圧シリンダー油室の出力Ｐａが、作
業機昇降用油圧装置のリフト圧Ｐ２の値の変化に
対して、常に正側に位置すべく構成したことを特
徴とする油圧式操向装置。 A steering hydraulic valve device is interposed between the pitman arm and the knuckle arm operating member, a single piston rod steering hydraulic cylinder is interposed between the knuckle arm operating member and the fuselage frame, and a hydraulic pump and steering In a system in which a hydraulic system for lifting and lowering a working machine and a hydraulic system for lifting and lowering a work machine are arranged in series, the output Pa of the hydraulic cylinder oil chamber on the piston rod side is A hydraulic steering device characterized in that it is configured to always be located on the positive side.
JP1985023722U 1985-01-19 1985-02-20 Expired JPH0323421Y2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1985023722U JPH0323421Y2 (en) 1985-02-20 1985-02-20
US06/819,860 US4664210A (en) 1985-01-19 1986-01-17 Hydraulic steering system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985023722U JPH0323421Y2 (en) 1985-02-20 1985-02-20

Publications (2)

Publication Number Publication Date
JPS61138771U true JPS61138771U (en) 1986-08-28
JPH0323421Y2 JPH0323421Y2 (en) 1991-05-22

Family

ID=30517212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985023722U Expired JPH0323421Y2 (en) 1985-01-19 1985-02-20

Country Status (1)

Country Link
JP (1) JPH0323421Y2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239991U (en) * 1975-09-12 1977-03-22
JPS5531321A (en) * 1978-08-29 1980-03-05 Oki Electric Ind Co Ltd Current supply circuit
JPS56124061U (en) * 1980-02-22 1981-09-21
JPS56172470U (en) * 1980-05-26 1981-12-19
JPS5827401A (en) * 1981-08-12 1983-02-18 Hitachi Ltd Waveguide for shf receiver

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5155864A (en) * 1974-11-09 1976-05-17 Furukawa Aluminium KANJOTAINOSETSUGOHOHO

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5239991U (en) * 1975-09-12 1977-03-22
JPS5531321A (en) * 1978-08-29 1980-03-05 Oki Electric Ind Co Ltd Current supply circuit
JPS56124061U (en) * 1980-02-22 1981-09-21
JPS56172470U (en) * 1980-05-26 1981-12-19
JPS5827401A (en) * 1981-08-12 1983-02-18 Hitachi Ltd Waveguide for shf receiver

Also Published As

Publication number Publication date
JPH0323421Y2 (en) 1991-05-22

Similar Documents

Publication Publication Date Title
JPS61138771U (en)
JPS61200774U (en)
JPS61138770U (en)
JPS61138673U (en)
JPH0393266U (en)
JPH029302U (en)
JPS61138672U (en)
JPS61138671U (en)
JPS61152576U (en)
JPH02148874U (en)
JPS634772U (en)
JPS6345361U (en)
JPH0471417U (en)
JPS6171571U (en)
JPS6351829U (en)
JPS6157080U (en)
JPS61152575U (en)
JPS6388586U (en)
JPS62134312U (en)
JPS5870712U (en) Work machine lifting device in work vehicle
JPS61199475U (en)
JPS59101619U (en) Walking type rice transplanter
JPS62145883U (en)
JPS6326693U (en)
JPS6382894U (en)