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
Links
- 230000001629 suppression Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Operation Control Of Excavators (AREA)
Description
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)
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. .
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) |
-
1989
- 1989-08-11 JP JP9503989U patent/JPH0728212Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0728212Y2 (en) | 1995-06-28 |