JPS63171451U - - Google Patents
Info
- Publication number
- JPS63171451U JPS63171451U JP6338687U JP6338687U JPS63171451U JP S63171451 U JPS63171451 U JP S63171451U JP 6338687 U JP6338687 U JP 6338687U JP 6338687 U JP6338687 U JP 6338687U JP S63171451 U JPS63171451 U JP S63171451U
- Authority
- JP
- Japan
- Prior art keywords
- blade
- grader
- floats
- blade lift
- solenoid valve
- 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
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案のグレーダのブレードリフトフ
ロート回路の実施例を示し、第２図は本考案で使
用するダブルパイロツトチエツクバルブの詳細図
である。第３図は従来の油圧回路を示す。
１…ブレード、２，２′…複動式油圧シリンダ
、３…ポンプ、９，９′…コントロールバルブ、
１１…ダブルパイロツトチエツクバルブ、１６…
電磁弁。
FIG. 1 shows an embodiment of the grader blade lift float circuit of the present invention, and FIG. 2 is a detailed view of the double pilot check valve used in the present invention. FIG. 3 shows a conventional hydraulic circuit. 1...Blade, 2, 2'...Double acting hydraulic cylinder, 3...Pump, 9,9'...Control valve,
11...Double pilot check valve, 16...
solenoid valve.
Claims (1)
パイロツトチエツクバルブと、電磁弁とを設け、
ブレードリフトフロート時に、前記ダブルパイロ
ツトチエツクバルブのチエツク機能を前記電磁弁
のパイロツト圧で解除し、ブレードのフロート動
作を行うようにしたことを特徴とするグレーダの
ブレードリフトフロート回路。 A double pilot check valve and a solenoid valve are installed in the grader's blade lift hydraulic circuit.
A blade lift float circuit for a grader, characterized in that, when the blade lift floats, the check function of the double pilot check valve is canceled by the pilot pressure of the solenoid valve, and the blade floats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6338687U JPS63171451U (en) | 1987-04-28 | 1987-04-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6338687U JPS63171451U (en) | 1987-04-28 | 1987-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63171451U true JPS63171451U (en) | 1988-11-08 |
Family
ID=30898562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6338687U Pending JPS63171451U (en) | 1987-04-28 | 1987-04-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63171451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014149044A (en) * | 2013-02-01 | 2014-08-21 | Toshiba Mach Co Ltd | Hydraulic control system, and construction machine having the same mounted thereon |
-
1987
- 1987-04-28 JP JP6338687U patent/JPS63171451U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014149044A (en) * | 2013-02-01 | 2014-08-21 | Toshiba Mach Co Ltd | Hydraulic control system, and construction machine having the same mounted thereon |