JPH0336047U - - Google Patents

Info

Publication number
JPH0336047U
JPH0336047U JP9503989U JP9503989U JPH0336047U JP H0336047 U JPH0336047 U JP H0336047U JP 9503989 U JP9503989 U JP 9503989U JP 9503989 U JP9503989 U JP 9503989U JP H0336047 U JPH0336047 U JP H0336047U
Authority
JP
Japan
Prior art keywords
boom cylinder
head side
oil chamber
side oil
accumulator
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
JP9503989U
Other languages
Japanese (ja)
Other versions
JPH0728212Y2 (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 JP9503989U priority Critical patent/JPH0728212Y2/en
Publication of JPH0336047U publication Critical patent/JPH0336047U/ja
Application granted granted Critical
Publication of JPH0728212Y2 publication Critical patent/JPH0728212Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)

Description

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

第1図はこの考案にかかる振動抑制回路図、第
2図はホイール式シヨベルの側面図、第3図は従
来技術の振動抑制回路図である。 3…上部旋回体、5…作業アタツチメント、9
…ブームシリンダ、10…ヘツド側油室、12…
ブーム用パイロツト切換弁、18…パイロツトポ
ンプ、22…アキユムレータ、23…開閉弁、2
6…スイツチ、32…チエツク弁、33…切換弁
FIG. 1 is a diagram of a vibration suppression circuit according to this invention, FIG. 2 is a side view of a wheel type shovel, and FIG. 3 is a diagram of a vibration suppression circuit of the prior art. 3... Upper revolving structure, 5... Work attachment, 9
...Boom cylinder, 10...Head side oil chamber, 12...
Pilot switching valve for boom, 18...Pilot pump, 22...Accumulator, 23...Opening/closing valve, 2
6...Switch, 32...Check valve, 33...Switching valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 上部旋回体のフロント部にブームシリンダによ
り前後方向に回動可能に作業アタツチメントを装
着し、かつブームシリンダのヘツド側油室に対し
てアキユムレータを設け、作業車両走行時にブー
ムシリンダ用ヘツド側油室とアキユムレータとの
連通操作を行うことにより振動抑制効果を発揮す
るようにした作業車両において、ブームシリンダ
用ヘツド側油室とブーム用パイロツト切換弁とを
連通する油路にチエツク弁を介設し、そのチエツ
ク弁を常時は開き状態に設定し、上記ブームシリ
ンダ用ヘツド側油室とアキユムレータとの連通操
作を行つたとき、上記チエツク弁を閉じるように
構成したことを特徴とする作業車両の振動抑制回
路。
A work attachment is attached to the front part of the upper revolving structure so that it can be rotated in the front and back direction by a boom cylinder, and an accumulator is provided for the head side oil chamber of the boom cylinder, so that it can be used as the head side oil chamber for the boom cylinder when the work vehicle is running. In a work vehicle that exhibits a vibration suppression effect by communicating with an accumulator, a check valve is installed in the oil passage that communicates the boom cylinder head side oil chamber and the boom pilot switching valve. A vibration suppression circuit for a work vehicle, characterized in that the check valve is set to be open at all times, and the check valve is closed when the boom cylinder head side oil chamber and the accumulator are communicated with each other. .
JP9503989U 1989-08-11 1989-08-11 Vibration suppression circuit for work vehicle Expired - Lifetime JPH0728212Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9503989U JPH0728212Y2 (en) 1989-08-11 1989-08-11 Vibration suppression circuit for work vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9503989U JPH0728212Y2 (en) 1989-08-11 1989-08-11 Vibration suppression circuit for work vehicle

Publications (2)

Publication Number Publication Date
JPH0336047U true JPH0336047U (en) 1991-04-09
JPH0728212Y2 JPH0728212Y2 (en) 1995-06-28

Family

ID=31644321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9503989U Expired - Lifetime JPH0728212Y2 (en) 1989-08-11 1989-08-11 Vibration suppression circuit for work vehicle

Country Status (1)

Country Link
JP (1) JPH0728212Y2 (en)

Also Published As

Publication number Publication date
JPH0728212Y2 (en) 1995-06-28

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