JPS62159569U - - Google Patents
Info
- Publication number
- JPS62159569U JPS62159569U JP4685686U JP4685686U JPS62159569U JP S62159569 U JPS62159569 U JP S62159569U JP 4685686 U JP4685686 U JP 4685686U JP 4685686 U JP4685686 U JP 4685686U JP S62159569 U JPS62159569 U JP S62159569U
- Authority
- JP
- Japan
- Prior art keywords
- swing
- valve
- brake
- pilot
- switching 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
- 238000010276 construction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Operation Control Of Excavators (AREA)
- Jib Cranes (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図は本考案ブレーキ装置の油圧回路図、第
２図および第３図は従来技術の油圧回路図である
。
１……ブレーキ機構、２……油圧力作用部、３
……パイロツト切換弁、３ａ，３ｂ……電磁弁、
４……油圧ポンプ、５……旋回切換弁、６……リ
モートコントロール弁、９……シヤトル弁、１１
……パイロツト圧受圧部、１２……旋回モータ、
２１……絞り部、２２……チエツク弁。
FIG. 1 is a hydraulic circuit diagram of the brake system of the present invention, and FIGS. 2 and 3 are hydraulic circuit diagrams of the prior art. 1...Brake mechanism, 2...Hydraulic pressure acting part, 3
...Pilot switching valve, 3a, 3b...Solenoid valve,
4...Hydraulic pump, 5...Swivel switching valve, 6...Remote control valve, 9...Shuttle valve, 11
...Pilot pressure receiving part, 12...Swivel motor,
21... throttle section, 22... check valve.
Claims (1)
軸部にブレーキ作動し南油圧力にてブレーキ解除
がなされるようにした旋回パーキング用ブレーキ
機構をそなえた上部旋回式建設機械において、上
記ブレーキ機構１の油圧力作用部２に、圧油連通
イ位置とドレン油路ロ位置とを有するパイロツト
切換弁３を介して油圧ポンプ４に接続し、一方、
旋回切換弁５制御用リモートコントロール弁６の
パイロツト弁７，８の出力側ポートに旋回切換弁
５と並列にシヤトル弁９を接続し、該シヤトル弁
９を上記リモートコントロール弁６の旋回用操作
レバ１０と連動せしめる如くするとともに、上記
パイロツト切換弁３のパイロツト圧受圧部１１を
絞り部２１およびチエツク弁２２を介して上記シ
ヤトル弁９に連通せしめたことを特徴とする上部
旋回式建設機械の旋回体パーキング用ブレーキ装
置。 In an upper swing type construction machine having an upper swing structure and equipped with a swing parking brake mechanism that applies a brake to the swing axis of the upper swing structure and releases the brake using southern hydraulic pressure, the above-mentioned brake A hydraulic pressure acting part 2 of the mechanism 1 is connected to a hydraulic pump 4 via a pilot switching valve 3 having a pressure oil communication position A and a drain oil passage position RO, and on the other hand,
A shuttle valve 9 is connected in parallel with the swing switching valve 5 to the output side ports of the pilot valves 7 and 8 of the remote control valve 6 for controlling the swing switching valve 5, and the shuttle valve 9 is connected to the swing operation lever of the remote control valve 6. 10, and the pilot pressure receiving part 11 of the pilot switching valve 3 is communicated with the shuttle valve 9 through the throttle part 21 and the check valve 22. Brake device for body parking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4685686U JPS62159569U (en) | 1986-03-28 | 1986-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4685686U JPS62159569U (en) | 1986-03-28 | 1986-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62159569U true JPS62159569U (en) | 1987-10-09 |
Family
ID=30866906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4685686U Pending JPS62159569U (en) | 1986-03-28 | 1986-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62159569U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106104A (en) * | 1985-07-17 | 1987-05-16 | Hitachi Constr Mach Co Ltd | Brake circuit of hydraulic motor |
-
1986
- 1986-03-28 JP JP4685686U patent/JPS62159569U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106104A (en) * | 1985-07-17 | 1987-05-16 | Hitachi Constr Mach Co Ltd | Brake circuit of hydraulic motor |