JPH0470386U - - Google Patents

Info

Publication number
JPH0470386U
JPH0470386U JP11217690U JP11217690U JPH0470386U JP H0470386 U JPH0470386 U JP H0470386U JP 11217690 U JP11217690 U JP 11217690U JP 11217690 U JP11217690 U JP 11217690U JP H0470386 U JPH0470386 U JP H0470386U
Authority
JP
Japan
Prior art keywords
control valve
vertical movement
boom
calculation means
vertical
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
JP11217690U
Other languages
Japanese (ja)
Other versions
JP2537749Y2 (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 JP1990112176U priority Critical patent/JP2537749Y2/en
Publication of JPH0470386U publication Critical patent/JPH0470386U/ja
Application granted granted Critical
Publication of JP2537749Y2 publication Critical patent/JP2537749Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Earth Drilling (AREA)

Description

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

第１図は、本考案の伸縮ブームの垂直移動制御
装置の実施例を示す説明図である。第２図および
第３図は、従来の技術を示し、第２図は、穴掘建
柱車の全体の説明図であり、第３図は、その回路
図である。 ４……伸縮ブーム、５……伸縮シリンダ、６…
…起伏シリンダ、８……主制御弁、１０……選択
スイツチ、１１……垂直移動演算手段、１５……
補助制御弁。 FIG. 1 is an explanatory diagram showing an embodiment of the vertical movement control device for a telescopic boom of the present invention. FIG. 2 and FIG. 3 show the conventional technology, FIG. 2 is an explanatory diagram of the entire hole-drilling pole-erecting vehicle, and FIG. 3 is a circuit diagram thereof. 4...Telescopic boom, 5...Telescopic cylinder, 6...
... Lifting cylinder, 8 ... Main control valve, 10 ... Selection switch, 11 ... Vertical movement calculation means, 15 ...
Auxiliary control valve.

Claims (1)

【実用新案登録請求の範囲】 車両上に旋回自在に取付けた旋回台に起伏自在
にその基端を枢支した伸縮ブームを備えて構成さ
れる作業車において、 伸縮ブームの作業姿勢を制御する主制御弁、垂
直移動制御を選択する選択スイツチ、移動中の伸
縮ブームの先端の軌跡が垂直であることを検出演
算する垂直移動演算手段、主制御弁の前段に位置
し垂直移動演算手段からの信号によつて作動する
補助制御弁を備え、 選択スイツチにより垂直移動制御が選択された
のちの起伏操作によつて主制御弁が作動している
ときに、垂直移動演算手段から伸縮ブームの先端
の位置をその軌跡が垂直になるよう補正する信号
が出力されると、補助制御弁が後段の主制御弁へ
の圧油を断つとともに伸縮シリンダの伸縮ブーム
の先端の位置を補正する側に圧油を供給するよう
にしたことを特徴とする伸縮ブームの垂直移動制
御装置。[Scope of Claim for Utility Model Registration] In a work vehicle equipped with a telescoping boom whose base end is pivotally supported on a swivel base rotatably mounted on the vehicle, a main body that controls the working posture of the telescoping boom. A control valve, a selection switch that selects vertical movement control, a vertical movement calculation means that detects and calculates that the trajectory of the tip of the moving telescopic boom is vertical, and a signal from the vertical movement calculation means located before the main control valve. The control valve is equipped with an auxiliary control valve that is operated by the vertical movement control, and when the main control valve is operated by the luffing operation after vertical movement control is selected by the selection switch, the position of the tip of the telescopic boom is determined from the vertical movement calculation means. When a signal is output to correct the trajectory so that it becomes vertical, the auxiliary control valve cuts off the pressure oil to the main control valve at the subsequent stage and supplies pressure oil to the side of the telescoping cylinder that corrects the position of the end of the telescoping boom. A vertical movement control device for a telescopic boom.
JP1990112176U 1990-10-25 1990-10-25 Vertical movement control device for telescopic boom Expired - Lifetime JP2537749Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990112176U JP2537749Y2 (en) 1990-10-25 1990-10-25 Vertical movement control device for telescopic boom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990112176U JP2537749Y2 (en) 1990-10-25 1990-10-25 Vertical movement control device for telescopic boom

Publications (2)

Publication Number Publication Date
JPH0470386U true JPH0470386U (en) 1992-06-22
JP2537749Y2 JP2537749Y2 (en) 1997-06-04

Family

ID=31859676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990112176U Expired - Lifetime JP2537749Y2 (en) 1990-10-25 1990-10-25 Vertical movement control device for telescopic boom

Country Status (1)

Country Link
JP (1) JP2537749Y2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5774437A (en) * 1981-06-01 1982-05-10 Hitachi Constr Mach Co Ltd Automatic operating device for straight excavation of hydraulic shovel
JPS63219789A (en) * 1987-03-06 1988-09-13 日立建機株式会社 Arm type working machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5774437A (en) * 1981-06-01 1982-05-10 Hitachi Constr Mach Co Ltd Automatic operating device for straight excavation of hydraulic shovel
JPS63219789A (en) * 1987-03-06 1988-09-13 日立建機株式会社 Arm type working machine

Also Published As

Publication number Publication date
JP2537749Y2 (en) 1997-06-04

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