JPH0332654U - - Google Patents
Info
- Publication number
- JPH0332654U JPH0332654U JP9268989U JP9268989U JPH0332654U JP H0332654 U JPH0332654 U JP H0332654U JP 9268989 U JP9268989 U JP 9268989U JP 9268989 U JP9268989 U JP 9268989U JP H0332654 U JPH0332654 U JP H0332654U
- Authority
- JP
- Japan
- Prior art keywords
- brake
- pressure
- oil
- pressure switch
- oil passage
- 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
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Operation Control Of Excavators (AREA)
Description
第１図は本考案の油圧および電気回路図、第２
図は従来の回路図である。
１……リモコン弁、２……旋回用コントロール
バルブ、ａ，ｂ……同パイロツト油路、３……シ
ヤツトル弁、４……プレツシヤスイツチ、４ａ…
…同パイロツト油路、５……マイコン、６……電
磁弁、６ａ……電磁作動部、７……油圧源、８…
…旋回モータ、９……パーキングブレーキ、９ａ
……制動解除用油室、９ｂ……ばね、９ｃ……圧
油給排ポート、１０……シヤツトル弁、ｃ……電
路、ｄ……油路。
Figure 1 is the hydraulic and electrical circuit diagram of the present invention, Figure 2
The figure is a conventional circuit diagram. 1...Remote control valve, 2...Swivel control valve, a, b...Pilot oil passage, 3...Shuttle valve, 4...Pressure switch, 4a...
...Pilot oil passage, 5...Microcomputer, 6...Solenoid valve, 6a...Solenoid actuator, 7...Hydraulic power source, 8...
...Swivel motor, 9...Parking brake, 9a
... Brake release oil chamber, 9b... Spring, 9c... Pressure oil supply/discharge port, 10... Shuttle valve, c... Electric line, d... Oil line.
Claims (1)
ーキ解除される旋回パーキングブレーキ９の制動
解除用油室９ａに対する圧油給排用電磁弁６の電
磁作動部６ａを、プレツシヤスイツチ４を介して
作動されるマイコン５に接続し、前記プレツシヤ
スイツチ４のパイロツト油路４ａをシヤトル弁３
を介して旋回用コントロールバルブ２のパイロツ
ト油路ａ，ｂに接続してなるパーキングブレーキ
装置において、前記制動解除用油室９ａに対する
圧油給排ポート９ｃをシヤツトル弁１０を介して
油路ｄにより前記プレツシヤスイツチ４のパイロ
ツト油路４ａに接続してなることを特徴とする旋
回パーキングブレーキ作動用回路。 The electromagnetic actuating portion 6a of the solenoid valve 6 for supplying and discharging pressure oil to the brake release oil chamber 9a of the swing parking brake 9, which operates the brake by a spring force and releases the brake by hydraulic pressure, is actuated via the pressure switch 4. The pilot oil passage 4a of the pressure switch 4 is connected to the shuttle valve 3.
In the parking brake device, the pressure oil supply and discharge port 9c to the brake release oil chamber 9a is connected to the pilot oil passages a and b of the swing control valve 2 through the shuttle valve 10 and the oil passage d. A turning parking brake operating circuit characterized in that it is connected to a pilot oil passage 4a of the pressure switch 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9268989U JPH0724445Y2 (en) | 1989-08-07 | 1989-08-07 | Circuit for operating the swing parking brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9268989U JPH0724445Y2 (en) | 1989-08-07 | 1989-08-07 | Circuit for operating the swing parking brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0332654U true JPH0332654U (en) | 1991-03-29 |
| JPH0724445Y2 JPH0724445Y2 (en) | 1995-06-05 |
Family
ID=31642101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9268989U Expired - Fee Related JPH0724445Y2 (en) | 1989-08-07 | 1989-08-07 | Circuit for operating the swing parking brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0724445Y2 (en) |
-
1989
- 1989-08-07 JP JP9268989U patent/JPH0724445Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0724445Y2 (en) | 1995-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |