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
Links
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
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)
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.
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)
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 |
-
1990
- 1990-06-05 JP JP5997290U patent/JP2515850Y2/en not_active Expired - Lifetime
Cited By (4)
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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