JPH0477649U - - Google Patents
Info
- Publication number
- JPH0477649U JPH0477649U JP11773090U JP11773090U JPH0477649U JP H0477649 U JPH0477649 U JP H0477649U JP 11773090 U JP11773090 U JP 11773090U JP 11773090 U JP11773090 U JP 11773090U JP H0477649 U JPH0477649 U JP H0477649U
- Authority
- JP
- Japan
- Prior art keywords
- brake
- parking
- parking brake
- electromagnetic proportional
- control 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)
- Braking Systems And Boosters (AREA)
Description
第１図は本考案に係る旋回体パーキング用ブレ
ーキ装置の油圧回路図。第２図は同じく公知油圧
回路図。第３図は駐車ブレーキにおけるブレーキ
トルクとブレーキ解除圧力の関係を示すグラフ。
第４図は電磁比例減圧弁の２次圧力と電流値の関
係を示すグラフ。
図において；Ａ……電磁比例減圧弁、１……油
圧ポンプ、２……旋回用コントロールバルブ、３
……旋回モータ、４……駐車ブレーキ、５……リ
モコンバルブ、６……シヤツトル弁、７……プレ
ツシヤスイツチ、８……コントローラ、９……電
磁弁、１０……補助油圧源。
FIG. 1 is a hydraulic circuit diagram of a brake device for parking a rotating body according to the present invention. FIG. 2 is also a publicly known hydraulic circuit diagram. FIG. 3 is a graph showing the relationship between brake torque and brake release pressure in the parking brake.
FIG. 4 is a graph showing the relationship between the secondary pressure and current value of the electromagnetic proportional pressure reducing valve. In the figure: A...Electromagnetic proportional pressure reducing valve, 1...Hydraulic pump, 2...Swivel control valve, 3
... Swing motor, 4 ... Parking brake, 5 ... Remote control valve, 6 ... Shuttle valve, 7 ... Pressure switch, 8 ... Controller, 9 ... Solenoid valve, 10 ... Auxiliary hydraulic power source.
Claims (1)
ルバルブが切換り、旋回モータが作動する時のみ
解除される様に構成された駐車ブレーキにおいて
、補助油圧源１０を電磁比例減圧弁Ａを介し駐車
ブレーキ４に接続し電磁比例減圧弁を設定するこ
とによりコントローラ８からの電気信号により駐
車ブレーキ４のブレーキトルクを任意に設定出来
るようにし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 a parking brake configured to be released only when a remote control valve is operated, a swing control valve is switched, and a swing motor is activated, an auxiliary hydraulic pressure source 10 is connected to a parking brake 4 via an electromagnetic proportional pressure reducing valve A. A brake device for parking a revolving structure of an upper swing type construction machine, characterized in that the brake torque of the parking brake 4 can be arbitrarily set by an electric signal from a controller 8 by setting an electromagnetic proportional pressure reducing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11773090U JPH0477649U (en) | 1990-11-13 | 1990-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11773090U JPH0477649U (en) | 1990-11-13 | 1990-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0477649U true JPH0477649U (en) | 1992-07-07 |
Family
ID=31865637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11773090U Pending JPH0477649U (en) | 1990-11-13 | 1990-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0477649U (en) |
-
1990
- 1990-11-13 JP JP11773090U patent/JPH0477649U/ja active Pending