JPS61181089U - - Google Patents

Info

Publication number
JPS61181089U
JPS61181089U JP6546285U JP6546285U JPS61181089U JP S61181089 U JPS61181089 U JP S61181089U JP 6546285 U JP6546285 U JP 6546285U JP 6546285 U JP6546285 U JP 6546285U JP S61181089 U JPS61181089 U JP S61181089U
Authority
JP
Japan
Prior art keywords
oil
valve
hydraulic motor
inlet
outlet
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
Application number
JP6546285U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP6546285U priority Critical patent/JPS61181089U/ja
Publication of JPS61181089U publication Critical patent/JPS61181089U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の実施例を示す回路図、第２図
は従来装置を示す回路図である。 ２は油圧モータ、３は方向制御弁、４，５は油
路、１４は油圧ポンプ、２１は圧力制御弁、２２
はバイパス弁、２３〜２６は逆止弁、２８はネガ
テイブブレーキを示す。 FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional device. 2 is a hydraulic motor, 3 is a directional control valve, 4 and 5 are oil passages, 14 is a hydraulic pump, 21 is a pressure control valve, 22
23 to 26 are check valves, and 28 is a negative brake.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 油圧ポンプの吐出側に設けた方向制御弁から送
り出された油を油圧モータに送り該油圧モータ駆
動後の油を方向制御弁に戻す油路を設け、油圧モ
ータ入側が高圧になつたときは油圧モータ出側の
油路が開状態に切換り低圧になつたときは油圧モ
ータから方向制御弁側への戻り油の流れを阻止す
る圧力制御弁を設け、絞り位置と閉止位置に切換
可能なバイパス弁の入側ポートと上記油圧モータ
の入側および出側を、バイパス弁入側への油の流
れを許す逆止弁を介して接続し、かつ上記バイパ
ス弁の出側ポートと上記油圧モータの入側および
出側を、バイパス弁出側への油の流れを阻止する
逆止弁を介して接続したことを特徴とするクレー
ンの旋回装置。 An oil passage is provided to send the oil sent out from the directional control valve installed on the discharge side of the hydraulic pump to the hydraulic motor, and return the oil after driving the hydraulic motor to the directional control valve. When the oil passage on the motor outlet side switches to the open state and the pressure becomes low, a pressure control valve is installed that prevents the flow of oil from the hydraulic motor to the directional control valve side, and the bypass can be switched between the throttle position and the closed position. The inlet port of the valve and the inlet and outlet sides of the hydraulic motor are connected via a check valve that allows oil to flow to the inlet side of the bypass valve, and the outlet port of the bypass valve is connected to the inlet and outlet sides of the hydraulic motor. A crane swing device characterized in that an inlet side and an outlet side are connected via a check valve that prevents oil from flowing to the bypass valve outlet side.
JP6546285U 1985-05-01 1985-05-01 Pending JPS61181089U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6546285U JPS61181089U (en) 1985-05-01 1985-05-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6546285U JPS61181089U (en) 1985-05-01 1985-05-01

Publications (1)

Publication Number Publication Date
JPS61181089U true JPS61181089U (en) 1986-11-12

Family

ID=30597478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6546285U Pending JPS61181089U (en) 1985-05-01 1985-05-01

Country Status (1)

Country Link
JP (1) JPS61181089U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0269687U (en) * 1988-11-17 1990-05-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0269687U (en) * 1988-11-17 1990-05-28

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