JPS61202556U - - Google Patents
Info
- Publication number
- JPS61202556U JPS61202556U JP8817885U JP8817885U JPS61202556U JP S61202556 U JPS61202556 U JP S61202556U JP 8817885 U JP8817885 U JP 8817885U JP 8817885 U JP8817885 U JP 8817885U JP S61202556 U JPS61202556 U JP S61202556U
- Authority
- JP
- Japan
- Prior art keywords
- swing
- pilot
- pressure oil
- circuit
- 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
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Jib Cranes (AREA)
- Fluid-Pressure Circuits (AREA)
Description
図は本考案の実施例を示す油圧回路図である。
１……旋回用パイロツト弁、２……旋回用操作
レバー、３，４……可変減圧弁、５……一次側回
路、７……切換弁、８……パイロツト油圧源、９
……タンク、１２……旋回用方向制御弁、１３…
…旋回用油圧モータ、１４……油圧ポンプ、１５
……上部旋回体、１６……駐車ブレーキ、１７…
…ブレーキ回路。
The figure is a hydraulic circuit diagram showing an embodiment of the present invention. 1... Pilot valve for swinging, 2... Control lever for swinging, 3, 4... Variable pressure reducing valve, 5... Primary side circuit, 7... Switching valve, 8... Pilot hydraulic pressure source, 9
...Tank, 12...Swivel directional control valve, 13...
... Hydraulic motor for swing, 14 ... Hydraulic pump, 15
...Upper rotating body, 16...Parking brake, 17...
...Brake circuit.
Claims (1)
旋回用方向制御弁を切換えて油圧ポンプからの圧
油を旋回用油圧モータに給排制御するようにした
旋回用油圧回路において、上記旋回用油圧モータ
にて駆動される上部旋回体に、圧油の流入によつ
てブレーキオフされ、圧油の排出によつてブレー
キオンされる駐車ブレーキを付設し、この駐車ブ
レーキに圧油を給排するブレーキ回路を上記パイ
ロツト弁の一次側回路に接続するとともに、この
一次側回路をタンクに連通させる状態と、パイロ
ツト油圧源に連通させる状態とに切換自在の切換
弁を設けたことを特徴とする旋回油圧回路。 In a swing hydraulic circuit in which the swing direction control valve is switched by the pilot pressure from the swing pilot valve to control the supply and discharge of pressure oil from the hydraulic pump to the swing hydraulic motor, the swing hydraulic motor is driven by the swing hydraulic motor. A parking brake that is turned off by the inflow of pressure oil and turned on by the discharge of the pressure oil is attached to the upper revolving body, and a brake circuit for supplying and discharging pressure oil to this parking brake is installed in the above-mentioned pilot. A swing hydraulic circuit characterized in that a switching valve is connected to a primary circuit of the valve and can be switched between communicating the primary circuit with a tank and communicating with a pilot hydraulic power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8817885U JPS61202556U (en) | 1985-06-11 | 1985-06-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8817885U JPS61202556U (en) | 1985-06-11 | 1985-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61202556U true JPS61202556U (en) | 1986-12-19 |
Family
ID=30641071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8817885U Pending JPS61202556U (en) | 1985-06-11 | 1985-06-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61202556U (en) |
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1985
- 1985-06-11 JP JP8817885U patent/JPS61202556U/ja active Pending