JPS6159476U - - Google Patents
Info
- Publication number
- JPS6159476U JPS6159476U JP14429584U JP14429584U JPS6159476U JP S6159476 U JPS6159476 U JP S6159476U JP 14429584 U JP14429584 U JP 14429584U JP 14429584 U JP14429584 U JP 14429584U JP S6159476 U JPS6159476 U JP S6159476U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- ram cylinder
- brake
- brake valve
- air pressure
- 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
- 239000003921 oil Substances 0.000 claims 2
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Braking Systems And Boosters (AREA)
Description
第１図は本考案に係る作業車両のブレーキ回路
を示す回路図、第２図は従来の作業車両のブレー
キ回路を示す回路図である。
１：空気圧源、１ａ：空気供給管路、７：走行
用ブレーキ弁、８：作業用ブレーキ弁、９：シヤ
トル弁、１２：空気圧油圧変換倍力装置、１３：
ロータリジヨイント、１５：ブレーキ装置、２０
，２０ａ：ラムシリンダ、２１：オイルタンク、
２３：ラムシリンダ制御弁、３０：走行用ブレー
キ弁、３１：ラムシリンダ制御弁、３２：作業用
ブレーキ弁、３３：ダブルリレーバルブ、３４，
３５，３６：パイロツト管路、３７：バイパス管
路、３８：逆止弁。
FIG. 1 is a circuit diagram showing a brake circuit for a work vehicle according to the present invention, and FIG. 2 is a circuit diagram showing a brake circuit for a conventional work vehicle. 1: Air pressure source, 1a: Air supply pipe, 7: Brake valve for traveling, 8: Brake valve for work, 9: Shuttle valve, 12: Air pressure hydraulic conversion booster, 13:
Rotary joint, 15: Brake device, 20
, 20a: Ram cylinder, 21: Oil tank,
23: Ram cylinder control valve, 30: Traveling brake valve, 31: Ram cylinder control valve, 32: Working brake valve, 33: Double relay valve, 34,
35, 36: Pilot pipe line, 37: Bypass pipe line, 38: Check valve.
Claims (1)
ブレーキ弁および作業用ブレーキ弁と、これら走
行用ブレーキ弁および作業用ブレーキ弁の一方が
切り換えられたとき作動するブレーキ装置と、こ
のブレーキ装置が備えられる車輪が懸架されるラ
ムシリンダと、このラムシリンダに供給される作
動油が貯蔵されるオイルタンクと、前記ラムシリ
ンダおよびオイルタンクを連絡する管路に介設さ
れたラムシリンダロツク弁とるを備えた作業車両
のブレーキ回路において、前記空気圧源に前記走
行用ブレーキ弁と、前記空気圧源から前記ブレー
キ装置に供給される圧力空気を制御するダブルリ
レーバルブと、前記ラムシリンダロツク弁を切り
換えるラムシリンダ制御弁を並列に接続し、前記
空気圧源からの空気供給管路と前記ラムシリンダ
制御弁の出力管路を前記作業用ブレーキ弁の２つ
の入力ポートに接続し、前記走行用ブレーキ弁の
出力ポートと前記ダブルリレーバルブの一方の信
号圧入力ポート、および操作時、前記空気圧源と
連通する前記作業用ブレーキ弁の一方の出力ポー
トと前記ダブルリレーバルブの他方の信号圧入力
ポート、および未操作時、前記ラムシリンダ制御
弁の出力ポートと連通する前記作業用ブレーキ弁
の他方の出力ポートと前記ラムシリンダロツク弁
の信号圧入力ポートとをパイロツト管路にて連絡
し、作業用ブレーキ弁の出力ポートに接続される
２つのパイロツト管路の間に、前記作業用ブレー
キ弁の他方の出力ポートから前記ダブルリレーバ
ルブの他方の信号圧入力ポートへの信号圧を停止
する逆止弁を備えたバイパス管路を設けたことを
特徴とする、作業車両のブレーキ回路。 An air pressure source, a travel brake valve and a work brake valve connected to the air pressure source, a brake device that operates when one of the travel brake valve and the work brake valve is switched, and the brake device includes A ram cylinder on which a wheel is suspended, an oil tank in which hydraulic oil to be supplied to the ram cylinder is stored, and a ram cylinder lock valve interposed in a pipe connecting the ram cylinder and the oil tank. In the brake circuit of a working vehicle, the air pressure source includes the traveling brake valve, a double relay valve that controls pressurized air supplied from the air pressure source to the brake device, and a ram cylinder control that switches the ram cylinder lock valve. The valves are connected in parallel, and an air supply line from the air pressure source and an output line of the ram cylinder control valve are connected to two input ports of the working brake valve, and an output port of the traveling brake valve and an output line of the ram cylinder control valve are connected in parallel. one signal pressure input port of the double relay valve, and when operated, one output port of the working brake valve that communicates with the air pressure source and the other signal pressure input port of the double relay valve, and when not operated; The other output port of the working brake valve, which communicates with the output port of the ram cylinder control valve, and the signal pressure input port of the ram cylinder lock valve are connected through a pilot pipe, and the output port of the working brake valve is connected to the signal pressure input port of the ram cylinder lock valve. A bypass pipe line provided between two connected pilot pipe lines with a check valve that stops signal pressure from the other output port of the working brake valve to the other signal pressure input port of the double relay valve. A brake circuit for a work vehicle, characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14429584U JPS6159476U (en) | 1984-09-26 | 1984-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14429584U JPS6159476U (en) | 1984-09-26 | 1984-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6159476U true JPS6159476U (en) | 1986-04-22 |
Family
ID=30702579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14429584U Pending JPS6159476U (en) | 1984-09-26 | 1984-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6159476U (en) |
-
1984
- 1984-09-26 JP JP14429584U patent/JPS6159476U/ja active Pending
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