JPH0476588U - - Google Patents
Info
- Publication number
- JPH0476588U JPH0476588U JP12116390U JP12116390U JPH0476588U JP H0476588 U JPH0476588 U JP H0476588U JP 12116390 U JP12116390 U JP 12116390U JP 12116390 U JP12116390 U JP 12116390U JP H0476588 U JPH0476588 U JP H0476588U
- Authority
- JP
- Japan
- Prior art keywords
- expansion
- crawler
- contraction
- cylinder
- undercarriage body
- 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
- 230000008602 contraction Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Description
図は本考案の建設機械の油圧回路の概要を示す
回路図である。
１……上部旋回体、２……下部走行体、３ａ，
３ｂ……クローラ拡縮シリンダ、４ａ，４ｂ，４
ｃ，４ｄ……ジヤツキアツプシリンダ、５……主
切換弁、６ａ，６ｂ……パイロツトチエツク弁、
１７……回路切換弁。
The figure is a circuit diagram showing an outline of the hydraulic circuit of the construction machine of the present invention. 1... Upper rotating body, 2... Lower traveling body, 3a,
3b... Crawler expansion/contraction cylinder, 4a, 4b, 4
c, 4d...Jacket up cylinder, 5...Main switching valve, 6a, 6b...Pilot check valve,
17...Circuit switching valve.
Claims (1)
ーラ拡縮シリンダの作動で行わせるようにしてあ
ると共に、下部走行体に具備したジヤツキアツプ
シリンダを下部走行体側での操作で作動させるよ
うにしてある建設機械の油圧回路において、クロ
ーラ拡縮シリンダを作動させる主切換弁を上部旋
回体側に設けて上記クローラ拡縮シリンダにパイ
ロツトチエツク弁を介して連結したことを特徴と
する建設機械の油圧回路。 A construction machine in which the expansion and contraction of a crawler included in the undercarriage body is performed by the operation of a crawler expansion/contraction cylinder, and the jack up cylinder provided in the undercarriage body is actuated by an operation on the undercarriage body side. 1. A hydraulic circuit for construction machinery, characterized in that a main switching valve for operating a crawler expansion/contraction cylinder is provided on the upper rotating body side and connected to the crawler expansion/contraction cylinder via a pilot check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12116390U JPH081188Y2 (en) | 1990-11-19 | 1990-11-19 | Hydraulic circuit of construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12116390U JPH081188Y2 (en) | 1990-11-19 | 1990-11-19 | Hydraulic circuit of construction machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0476588U true JPH0476588U (en) | 1992-07-03 |
| JPH081188Y2 JPH081188Y2 (en) | 1996-01-17 |
Family
ID=31869035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12116390U Expired - Lifetime JPH081188Y2 (en) | 1990-11-19 | 1990-11-19 | Hydraulic circuit of construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH081188Y2 (en) |
-
1990
- 1990-11-19 JP JP12116390U patent/JPH081188Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH081188Y2 (en) | 1996-01-17 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |