JPS61205828U - - Google Patents
Info
- Publication number
- JPS61205828U JPS61205828U JP1985090530U JP9053085U JPS61205828U JP S61205828 U JPS61205828 U JP S61205828U JP 1985090530 U JP1985090530 U JP 1985090530U JP 9053085 U JP9053085 U JP 9053085U JP S61205828 U JPS61205828 U JP S61205828U
- Authority
- JP
- Japan
- Prior art keywords
- control device
- valve
- section
- brake control
- hydraulic
- 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
- 230000007935 neutral effect Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
図面は本考案の実施例を示す動力伝達及び油圧
操作系統を示す説明図である。
1:エンジン、3:カウンタ、4:カウンタプ
ーリ、4a:可変プーリ、31a,31b:前後
進クラツチ操作回路、32:クラツチ軸、33:
ブレーキ装置、34,34a,34b:ブレーキ
操作回路、35:変速操作バルブ、36:オイル
タンク、37:主操作回路、38:油圧ポンプ、
39:ドレン管、40:リリーフ弁、41:開放
回路、41a:ドレン管、41b:可変ドレン管
、42:解除操作部、43:解除バルブ、44:
可変しぼり弁、45:フイルタ、46:連動手段
。
The drawing is an explanatory diagram showing a power transmission and hydraulic operation system according to an embodiment of the present invention. 1: Engine, 3: Counter, 4: Counter pulley, 4a: Variable pulley, 31a, 31b: Forward/reverse clutch operation circuit, 32: Clutch shaft, 33:
Brake device, 34, 34a, 34b: Brake operation circuit, 35: Speed change operation valve, 36: Oil tank, 37: Main operation circuit, 38: Hydraulic pump,
39: Drain pipe, 40: Relief valve, 41: Open circuit, 41a: Drain pipe, 41b: Variable drain pipe, 42: Release operation section, 43: Release valve, 44:
Variable throttle valve, 45: filter, 46: interlocking means.
Claims (1)
び中立の切り換え操作を行う変速操作バルブを設
け、該変速操作バルブを中立位置に操作したとき
に、ブレーキ装置が制動作用すべく油圧配管した
作業車において、上記油圧操作回路に開放回路を
設け、該開放回路中には前記油圧操作回路のブレ
ーキ作動油圧を解除する解除操作部を設けたこと
を特徴とする作業車におけるブレーキ制御装置。 2 解除操作部を可変しぼり弁を有する構成とし
た実用新案登録請求の範囲第1項に記載の作業車
におけるブレーキ制御装置。 3 解除操作部をソレノイドバルブを有する構成
とし、該ソレノイドバルブを走行部制動不要状態
への操作と連動せしめる構成とした実用新案登録
請求の範囲第1項に記載の作業車におけるブレー
キ制御装置。 4 可変しぼり弁を走行部の速度制御状態に応じ
て電気的又は機械的手段により、高速状態ではし
ぼりを小さくし低速状態においてしぼりを大きく
制御せしめる構成とした実用新案登録請求の範囲
第1項又は第2項又は第3項に記載の作業車にお
けるブレーキ制御装置。[Scope of Claim for Utility Model Registration] 1. A shift operation valve for switching between forward/reverse and neutral is provided in the hydraulic operation circuit that controls the traveling shift, and when the shift operation valve is operated to the neutral position, the brake device is activated. In a work vehicle equipped with hydraulic piping for braking, the hydraulic operating circuit is provided with an open circuit, and the open circuit is provided with a release operating section for releasing the brake operating pressure of the hydraulic operating circuit. Brake control device in cars. 2. A brake control device for a working vehicle as set forth in claim 1 of the utility model registration claim, in which the release operation section has a variable throttle valve. 3. The brake control device for a working vehicle according to claim 1, wherein the release operation section is configured to include a solenoid valve, and the solenoid valve is configured to be linked with the operation to place the traveling section in a state where no braking is required. 4. Utility model registration claim Paragraph 1, in which the variable throttle valve is configured to reduce the throttle in a high speed state and increase the throttle in a low speed state by electrical or mechanical means depending on the speed control state of the traveling section. A brake control device for a work vehicle according to item 2 or 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985090530U JPH0413241Y2 (en) | 1985-06-14 | 1985-06-14 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985090530U JPH0413241Y2 (en) | 1985-06-14 | 1985-06-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61205828U true JPS61205828U (en) | 1986-12-25 |
JPH0413241Y2 JPH0413241Y2 (en) | 1992-03-27 |
Family
ID=30645604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985090530U Expired JPH0413241Y2 (en) | 1985-06-14 | 1985-06-14 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0413241Y2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5169238U (en) * | 1974-11-27 | 1976-06-01 | ||
JPS57179530U (en) * | 1981-05-09 | 1982-11-13 |
-
1985
- 1985-06-14 JP JP1985090530U patent/JPH0413241Y2/ja not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5169238U (en) * | 1974-11-27 | 1976-06-01 | ||
JPS57179530U (en) * | 1981-05-09 | 1982-11-13 |
Also Published As
Publication number | Publication date |
---|---|
JPH0413241Y2 (en) | 1992-03-27 |
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