JPH035755U - - Google Patents
Info
- Publication number
- JPH035755U JPH035755U JP6454289U JP6454289U JPH035755U JP H035755 U JPH035755 U JP H035755U JP 6454289 U JP6454289 U JP 6454289U JP 6454289 U JP6454289 U JP 6454289U JP H035755 U JPH035755 U JP H035755U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- cylinder
- work machine
- throttle valve
- type work
- 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.)
- Pending
Links
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Operation Control Of Excavators (AREA)
Description
図面は本考案の一実施例を示し、第１図は油圧
回路図、第２図はトラクタの側面図、第３図は第
２図のＡ−Ａ矢視拡大図、第４図はアンロード弁
の断面図である。
１…トラクタ車体、１４…フロントローダ、１６
…ブーム、１７…バケツト、１８…ブームシリン
ダ、２５…補助制御弁、２７，２８…シリンダ室
、２９，３０…回路、３１…絞り弁、３２…逆止
弁。
The drawings show one embodiment of the present invention, and Fig. 1 is a hydraulic circuit diagram, Fig. 2 is a side view of the tractor, Fig. 3 is an enlarged view taken along arrow A-A in Fig. 2, and Fig. 4 is an unloading diagram. FIG. 3 is a cross-sectional view of the valve. 1...Tractor body, 14...Front loader, 16
... boom, 17 ... bucket, 18 ... boom cylinder, 25 ... auxiliary control valve, 27, 28 ... cylinder chamber, 29, 30 ... circuit, 31 ... throttle valve, 32 ... check valve.
Claims (1)
に昇降自在に枢着すると共に、このブーム１６を
昇降させるブームシリンダ１８を備えたブーム型
作業機において、ブームシリンダ１８の両シリン
ダ室２７，２８に連通する一対の回路２９，３０
の内、ブーム１６の下降時にシリンダ室２８に作
動油を供給する側の回路３０に、絞り弁３１を介
して作動油を供給するように該絞り弁３１と逆止
弁３２とを並列に介装したことを特徴とするブー
ム型作業機の油圧回路。 A boom 16 having a working tool 17 at the tip is attached to the vehicle body 1.
In a boom-type work machine equipped with a boom cylinder 18 that is pivotally attached to the boom cylinder 18 so as to be movable up and down and that raises and lowers the boom 16, a pair of circuits 29 and 30 communicate with both cylinder chambers 27 and 28 of the boom cylinder 18.
A throttle valve 31 and a check valve 32 are connected in parallel to supply hydraulic oil to the cylinder chamber 28 when the boom 16 is lowered, through the throttle valve 31. A hydraulic circuit for a boom-type work machine characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6454289U JPH035755U (en) | 1989-06-01 | 1989-06-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6454289U JPH035755U (en) | 1989-06-01 | 1989-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH035755U true JPH035755U (en) | 1991-01-21 |
Family
ID=31595583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6454289U Pending JPH035755U (en) | 1989-06-01 | 1989-06-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH035755U (en) |
-
1989
- 1989-06-01 JP JP6454289U patent/JPH035755U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH035755U (en) | ||
| JPH041248U (en) | ||
| JPH0284857U (en) | ||
| JPS634772U (en) | ||
| JPH0320364Y2 (en) | ||
| JPH03108310U (en) | ||
| JPH01119445U (en) | ||
| JPH035768U (en) | ||
| JPH0242965U (en) | ||
| JPH0473055U (en) | ||
| JPS6457147U (en) | ||
| JPH0473054U (en) | ||
| JPH03108045U (en) | ||
| JPH0313355U (en) | ||
| JPH0438652Y2 (en) | ||
| JPS63100498U (en) | ||
| JPS61146115U (en) | ||
| JPH02101837U (en) | ||
| JPS62195567U (en) | ||
| JPH02132751U (en) | ||
| JPH01138950U (en) | ||
| JPS6331157U (en) | ||
| JPS6457148U (en) | ||
| JPS6135958U (en) | Arm structure of work equipment | |
| JPS5980562U (en) | Hydraulic excavation loader work machine speed increase and power increase device |