JPH0422604U - - Google Patents
Info
- Publication number
- JPH0422604U JPH0422604U JP6455390U JP6455390U JPH0422604U JP H0422604 U JPH0422604 U JP H0422604U JP 6455390 U JP6455390 U JP 6455390U JP 6455390 U JP6455390 U JP 6455390U JP H0422604 U JPH0422604 U JP H0422604U
- Authority
- JP
- Japan
- Prior art keywords
- pilot pressure
- switching
- circuit
- valve
- control 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案にかかるパイロツト制御回路の
回路切換弁の一実施例を示す回路図、第２図は本
考案の回路切換弁を切換えた場合の回路図、第３
図は従来のブルドーザのブレードおよびリツパの
操作レバーから各シリンダに至るパイロツト回路
および主回路を示す制御回路図である。
１……パイロツト圧制御弁、２，３……方向切
換弁、４……回路切換弁、５〜１０……パイロツ
ト制御回路、１１〜１４……通路、１５……タン
ク、１６〜１９……ドレーン通路、２０……ドレ
ーン回路。
FIG. 1 is a circuit diagram showing an embodiment of the circuit switching valve of the pilot control circuit according to the present invention, FIG. 2 is a circuit diagram when the circuit switching valve of the present invention is switched, and FIG.
The figure is a control circuit diagram showing a pilot circuit and a main circuit from the operating lever of a conventional bulldozer blade and ripper to each cylinder. 1... Pilot pressure control valve, 2, 3... Direction switching valve, 4... Circuit switching valve, 5-10... Pilot control circuit, 11-14... Passage, 15... Tank, 16-19... Drain passage, 20...Drain circuit.
Claims (1)
の方向切換弁との間を回路切換弁を介してパイロ
ツト制御回路により連結すると共に、前記回路切
換弁は、切換時、前記パイロツト圧制御弁のパイ
ロツト圧を前記方向切換弁のうちの１個に導く通
路と、切換前の方向切換弁に作用したパイロツト
圧をタンクに導くドレーン通路を備えたことを特
徴とするパイロツト圧制御回路。 One pilot pressure control valve and at least two directional switching valves are connected by a pilot control circuit via a circuit switching valve, and the circuit switching valve is configured to control the pilot pressure control valve of the pilot pressure control valve when switching. A pilot pressure control circuit comprising: a passage for guiding pressure to one of the directional control valves; and a drain passage for guiding pilot pressure acting on the directional control valve before switching to a tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6455390U JPH0422604U (en) | 1990-06-18 | 1990-06-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6455390U JPH0422604U (en) | 1990-06-18 | 1990-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0422604U true JPH0422604U (en) | 1992-02-25 |
Family
ID=31595604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6455390U Pending JPH0422604U (en) | 1990-06-18 | 1990-06-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422604U (en) |
-
1990
- 1990-06-18 JP JP6455390U patent/JPH0422604U/ja active Pending
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