JPH0393847U - - Google Patents
Info
- Publication number
- JPH0393847U JPH0393847U JP373090U JP373090U JPH0393847U JP H0393847 U JPH0393847 U JP H0393847U JP 373090 U JP373090 U JP 373090U JP 373090 U JP373090 U JP 373090U JP H0393847 U JPH0393847 U JP H0393847U
- Authority
- JP
- Japan
- Prior art keywords
- ports
- valve
- right ends
- pilot pressure
- pilot
- 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
- 241000906091 Lethrinus miniatus Species 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
Description
第１図は本考案にかかるブルドーザのブルドー
ザの作業機用操作レバー装置の一実施例を示す油
圧回路図、第２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の操作パターンを示す
平面図である。
１……操作レバー、２……リツパリフト弁、３
……ブレードリフト弁、４……リツパチルト弁、
５……ブレードチルト弁、６……パイロツトコン
トロール弁、７……押しボタン、８，９……第１
パイロツト回路、１０……第１ソレノイド切換弁
、１１，１２……第２パイロツト回路、１３……
第２ソレノイド切換弁、１４……第１ポート１５
……第２ポート、１６……第３ポート、１７……
第４ポート、１８，１９，２０，２１……パイロ
ツト回路、２２……第１ポート、２３……第２ポ
ート、２４……第３ポート、２５……第４ポート
、２６，２７，２８，２９……パイロツト回路。
FIG. 1 is a hydraulic circuit diagram showing an embodiment of the operation lever device for a bulldozer working machine according to the present invention, and FIG. 2 is a plan view showing the operation pattern of the operation lever of a conventional bulldozer blade and ripper. be. 1...Operation lever, 2...Ritupa lift valve, 3
...Blade lift valve, 4...Ritupa tilt valve,
5... Blade tilt valve, 6... Pilot control valve, 7... Push button, 8, 9... First
Pilot circuit, 10... First solenoid switching valve, 11, 12... Second pilot circuit, 13...
Second solenoid switching valve, 14...first port 15
...Second port, 16...Third port, 17...
4th port, 18, 19, 20, 21... Pilot circuit, 22... 1st port, 23... 2nd port, 24... 3rd port, 25... 4th port, 26, 27, 28, 29...Pilot circuit.
Claims (1)
ロツト圧コントロール弁と、操作レバーに設けた
押しボタンと、押しボタンのＯＮにより前記パイ
ロツト圧コントロール弁からのパイロツト圧作動
方向を切換える第１および第２ソレノイド切換弁
とを備え、前記第１ソレノイド切換弁は吐出側の
第１および第２ポートがそれぞれブレードリフト
弁の左右端と、第３および第４ポートがそれぞれ
リツパリフト弁の左右端と各パイロツト回路によ
り連結され、前記第２ソレノイド切換弁の吐出側
の第１および第２ポートがそれぞれブレードチル
ト弁の左右端と、第３および第４ポートがリツパ
チルト弁の左右端と各パイロツト回路により連結
されると共に、前記第１、第２ソレノイド切換弁
は、２位置を有して第１および第２ポートが開の
とき、第３および第４ポートが閉、第３および第
４ポートが開のとき、第１および第２ポートが閉
となることを特徴とするブルドーザの作業機操作
レバー装置。 One pilot pressure control valve that follows the movement of one operating lever, a push button provided on the operating lever, and a first and second pilot pressure control valve that switches the operating direction of the pilot pressure from the pilot pressure control valve when the push button is turned on. 2 solenoid switching valves, wherein the first and second ports on the discharge side are connected to the left and right ends of the blade lift valve, respectively, and the third and fourth ports are connected to the left and right ends of the ripper lift valve, respectively, and each pilot. The first and second ports on the discharge side of the second solenoid switching valve are connected to the left and right ends of the blade tilt valve, respectively, and the third and fourth ports are connected to the left and right ends of the lipper tilt valve by respective pilot circuits. The first and second solenoid switching valves have two positions: when the first and second ports are open, when the third and fourth ports are closed, and when the third and fourth ports are open. A working machine operating lever device for a bulldozer, characterized in that the first and second ports are closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP373090U JPH0747467Y2 (en) | 1990-01-18 | 1990-01-18 | Operation lever device for work machine of bulldozer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP373090U JPH0747467Y2 (en) | 1990-01-18 | 1990-01-18 | Operation lever device for work machine of bulldozer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0393847U true JPH0393847U (en) | 1991-09-25 |
| JPH0747467Y2 JPH0747467Y2 (en) | 1995-11-01 |
Family
ID=31507536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP373090U Expired - Lifetime JPH0747467Y2 (en) | 1990-01-18 | 1990-01-18 | Operation lever device for work machine of bulldozer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747467Y2 (en) |
-
1990
- 1990-01-18 JP JP373090U patent/JPH0747467Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0747467Y2 (en) | 1995-11-01 |
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