JPS6271187U - - Google Patents
Info
- Publication number
- JPS6271187U JPS6271187U JP16299385U JP16299385U JPS6271187U JP S6271187 U JPS6271187 U JP S6271187U JP 16299385 U JP16299385 U JP 16299385U JP 16299385 U JP16299385 U JP 16299385U JP S6271187 U JPS6271187 U JP S6271187U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pump
- control valve
- pressure oil
- valve
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案の巻上ウインチの駆動用回路の
一実施例を示す回路図、第２図は従来の回路図で
ある。
１……第１巻上モータ、２……第２巻上モータ
、３……第１油圧ポンプ、４……第２油圧ポンプ
、５……第１コントロール弁、５ａ，５ｂ……切
換部、６……第２コントロール弁、６ａ，６ｂ…
…切換部、７……第１パイロツト弁、８……第２
パイロツト弁、１２……バイパス回路、１３……
切換弁、１４……分流弁、１５……回路。
FIG. 1 is a circuit diagram showing an embodiment of the hoisting winch driving circuit of the present invention, and FIG. 2 is a conventional circuit diagram. DESCRIPTION OF SYMBOLS 1...First hoisting motor, 2...Second hoisting motor, 3...First hydraulic pump, 4...Second hydraulic pump, 5...First control valve, 5a, 5b...Switching unit, 6...Second control valve, 6a, 6b...
...Switching part, 7...First pilot valve, 8...Second
Pilot valve, 12... Bypass circuit, 13...
Switching valve, 14... Diversion valve, 15... Circuit.
Claims (1)
モータへ圧油を供給する第１油圧ポンプおよび第
２油圧ポンプと、２つの切換部を有する第１コン
トロール弁および第２コントロール弁と、コント
ロール弁操作用のパイロツト圧を制御する第１パ
イロツト弁および第２パイロツト弁とを備え、第
１パイロツト弁を１速位置に操作するとそのパイ
ロツト圧により第１コントロール弁の一方の切換
部が作動位置に切換わつて第１油圧ポンプからの
圧油により第１巻上モータが１速で駆動され、か
つ第１パイロツト弁を２速位置に操作すると第２
コントロール弁の他方の切換部も作動位置に切換
わつて第２油圧ポンプからの圧油および第１油圧
ポンプからの圧油の合流圧油により第１巻上モー
タが２速で駆動され、第２パイロツト弁を１速位
置に操作するとそのパイロツト圧により第２コン
トロール弁の一方の切換部が作動位置に切換わつ
て第２油圧ポンプからの圧油により第２巻上モー
タが１速で駆動され、かつ第２パイロツト弁を２
速位置に操作すると第１コントロール弁の他方の
切換部も作動位置に切換わつて第１油圧ポンプか
らの圧油および第２油圧ポンプからの圧油の合流
圧油により第２巻上モータが２速で駆動されるよ
うにして成る巻上ウインチの駆動用油圧回路にお
いて、第１油圧ポンプと第１コントロール弁との
間にバイパス回路を設けると共に、第１油圧ポン
プの吐出側を第１コントロール弁側または前記バ
イパス回路側に切換接続する切換弁を設け、前記
バイパス回路に、ここを流れる圧油の一部を該バ
イパス回路外へ分流させる分流弁を設け、かつバ
イパス回路外へ分流された圧油を第２コントロー
ル弁へ導く回路を設けたことを特徴とする巻上ウ
インチの駆動用油圧回路。 A first hoisting motor and a second hoisting motor, a first hydraulic pump and a second hydraulic pump that supply pressure oil to the hoisting motor, a first control valve and a second control valve having two switching parts, It is equipped with a first pilot valve and a second pilot valve that control the pilot pressure for operating the control valve, and when the first pilot valve is operated to the 1st speed position, the pilot pressure causes one switching part of the first control valve to move to the operating position. , the first hoisting motor is driven at the first speed by pressure oil from the first hydraulic pump, and when the first pilot valve is operated to the second speed position, the first hoisting motor is driven at the second speed.
The other switching part of the control valve is also switched to the operating position, and the first hoisting motor is driven at second speed by the combined pressure oil of the pressure oil from the second hydraulic pump and the pressure oil from the first hydraulic pump. When the pilot valve is operated to the first speed position, the pilot pressure switches one switching part of the second control valve to the operating position, and the second hoisting motor is driven at the first speed by the pressure oil from the second hydraulic pump. and set the second pilot valve to 2.
When it is operated to the high speed position, the other switching part of the first control valve is also switched to the operating position, and the second hoisting motor is activated by the combined pressure oil of the pressure oil from the first hydraulic pump and the pressure oil from the second hydraulic pump. In the hydraulic circuit for driving a hoisting winch that is driven at high speed, a bypass circuit is provided between the first hydraulic pump and the first control valve, and the discharge side of the first hydraulic pump is connected to the first control valve. A switching valve is provided for switching connection to the bypass circuit side or the bypass circuit side, and the bypass circuit is provided with a diversion valve that diverts a part of the pressure oil flowing therethrough to the outside of the bypass circuit, and A hydraulic circuit for driving a hoisting winch, comprising a circuit for guiding oil to a second control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16299385U JPS6271187U (en) | 1985-10-25 | 1985-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16299385U JPS6271187U (en) | 1985-10-25 | 1985-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6271187U true JPS6271187U (en) | 1987-05-07 |
Family
ID=31090783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16299385U Pending JPS6271187U (en) | 1985-10-25 | 1985-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6271187U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0299893U (en) * | 1989-01-25 | 1990-08-08 |
-
1985
- 1985-10-25 JP JP16299385U patent/JPS6271187U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0299893U (en) * | 1989-01-25 | 1990-08-08 |
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