JPH0418702U - - Google Patents

Info

Publication number
JPH0418702U
JPH0418702U JP5997290U JP5997290U JPH0418702U JP H0418702 U JPH0418702 U JP H0418702U JP 5997290 U JP5997290 U JP 5997290U JP 5997290 U JP5997290 U JP 5997290U JP H0418702 U JPH0418702 U JP H0418702U
Authority
JP
Japan
Prior art keywords
valve
brake
control valve
spool
hydraulic motor
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
Application number
JP5997290U
Other languages
Japanese (ja)
Other versions
JP2515850Y2 (en
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 JP5997290U priority Critical patent/JP2515850Y2/en
Publication of JPH0418702U publication Critical patent/JPH0418702U/ja
Application granted granted Critical
Publication of JP2515850Y2 publication Critical patent/JP2515850Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Fluid-Pressure Circuits (AREA)

Description

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

第１図は、本考案の実施例を示す図、第２図は
本考案の弁装置の作動図、第３図は従来例を示す
図である。 １……油圧ポンプ、２……油圧モータ、３……
方向切換弁、４……旋回体、６……タンク、７…
…パイロツト制御弁、９……ブレーキ装置、９ａ
……圧油給排路、４０……弁装置、４１……本体
、４３……内孔、４４……スプール、４５……ス
プール、４６……バネ、ＰＡ……圧油供給ポート
、ＰＢ……ブレーキポート、ＰＴ……タンクポー
ト、ＰＰ……パイロツトポート、ＳＶ……切換弁
、ＣＶ……流量制御弁。 FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is an operational diagram of the valve device of the present invention, and FIG. 3 is a diagram showing a conventional example. 1...Hydraulic pump, 2...Hydraulic motor, 3...
Directional switching valve, 4...Swivel body, 6...Tank, 7...
...Pilot control valve, 9...Brake device, 9a
...Pressure oil supply/discharge path, 40...Valve device, 41...Main body, 43...Inner hole, 44...Spool, 45...Spool, 46...Spring, PA...Pressure oil supply port, PB... ...brake port, PT...tank port, PP...pilot port, SV...switching valve, CV...flow control valve.

Claims (1)

【実用新案登録請求の範囲】 油圧モータと油圧ポンプの間にパイロツト制御
弁を介して操作される方向切換弁を設け、前記油
圧モータに圧油の給排で解除・制動されるブレー
キ装置を設け、該ブレーキ装置と、前記パイロツ
ト制御弁とタンクとの間に切換弁と流量制御弁と
を有する弁装置を設け、この弁装置を、前記パイ
ロツト制御弁の作動に連動する構成とした油圧モ
ータのブレーキ回路において、 前記弁装置は、本体に、ブレーキ装置に接続さ
れるブレーキポートと圧油供給ポートとタンクポ
ートとが開口した内孔を設け、この内孔に、ブレ
ーキポート側に設けた切換弁のスプールとタンク
ポート側に設けた流量制御弁のスプールとをブレ
ーキポートを共有するよう同一軸芯上で対向して
摺動自在に嵌入し、切換弁のスプールの端部にパ
イロツト室を配置し、流量制御弁のスプールの端
部にバネを配設したものであることを特徴とする
油圧モータのブレーキ回路。[Scope of Claim for Utility Model Registration] A directional switching valve operated via a pilot control valve is provided between a hydraulic motor and a hydraulic pump, and a brake device is provided on the hydraulic motor that is released and braked by supplying and discharging pressurized oil. A hydraulic motor is provided with a valve device having a switching valve and a flow rate control valve between the brake device, the pilot control valve and the tank, and the valve device is configured to be interlocked with the operation of the pilot control valve. In the brake circuit, the valve device has an inner hole in the main body in which a brake port connected to the brake device, a pressure oil supply port, and a tank port are opened, and a switching valve provided on the brake port side is provided in the inner hole. The spool of the valve and the spool of the flow control valve installed on the tank port side are slidably fitted facing each other on the same axis so as to share the brake port, and the pilot chamber is placed at the end of the spool of the switching valve. A brake circuit for a hydraulic motor, characterized in that a spring is disposed at the end of a spool of a flow control valve.
JP5997290U 1990-06-05 1990-06-05 Brake circuit of hydraulic motor Expired - Lifetime JP2515850Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5997290U JP2515850Y2 (en) 1990-06-05 1990-06-05 Brake circuit of hydraulic motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5997290U JP2515850Y2 (en) 1990-06-05 1990-06-05 Brake circuit of hydraulic motor

Publications (2)

Publication Number Publication Date
JPH0418702U true JPH0418702U (en) 1992-02-17
JP2515850Y2 JP2515850Y2 (en) 1996-10-30

Family

ID=31586946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5997290U Expired - Lifetime JP2515850Y2 (en) 1990-06-05 1990-06-05 Brake circuit of hydraulic motor

Country Status (1)

Country Link
JP (1) JP2515850Y2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009024733A (en) * 2007-07-17 2009-02-05 Kayaba Ind Co Ltd Braking system of hydraulic motor
JP2010144752A (en) * 2008-12-16 2010-07-01 Kobelco Contstruction Machinery Ltd Hydraulic circuit of construction machinery
JP2011007235A (en) * 2009-06-24 2011-01-13 Caterpillar Sarl Changeover valve with air vent mechanism
JP2013136376A (en) * 2013-02-04 2013-07-11 Kyb Co Ltd Brake system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009024733A (en) * 2007-07-17 2009-02-05 Kayaba Ind Co Ltd Braking system of hydraulic motor
JP2010144752A (en) * 2008-12-16 2010-07-01 Kobelco Contstruction Machinery Ltd Hydraulic circuit of construction machinery
JP2011007235A (en) * 2009-06-24 2011-01-13 Caterpillar Sarl Changeover valve with air vent mechanism
JP2013136376A (en) * 2013-02-04 2013-07-11 Kyb Co Ltd Brake system

Also Published As

Publication number Publication date
JP2515850Y2 (en) 1996-10-30

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