JPS6419563U - - Google Patents
Info
- Publication number
- JPS6419563U JPS6419563U JP11518587U JP11518587U JPS6419563U JP S6419563 U JPS6419563 U JP S6419563U JP 11518587 U JP11518587 U JP 11518587U JP 11518587 U JP11518587 U JP 11518587U JP S6419563 U JPS6419563 U JP S6419563U
- Authority
- JP
- Japan
- Prior art keywords
- parking brake
- oil
- hydraulic pump
- hydraulic actuator
- showing
- 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
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Description
第１図は本考案に係る油圧回路を示す図、第２
図はそのオイル循環装置を示す側面図、第３図は
その電気回路を示す図、第４図ａはインチングバ
ルブのパルス幅変調の継続時間、オン作動時間Ｔ
ＯＮ１…及び周期Ｔを示す図、第４図ｂはパルス
幅変調の継続時間と車輛速度の相関を示す図、第
４図ｃは変化幅と車輛速度の相関を示す図、第５
図ａ，ｂ及び第６図は本考案に係る作動を示すフ
ローチヤートを、第７図はミツシヨンケース全体
を示す断面図、第８図は駐車ブレーキ兼用のサイ
ドブレーキを示す断面図である。そして、第９図
はコンバイン全体を示す側面図である。
１……作業車輛（コンバイン）、１９……オイ
ルタンク（ミツシヨンケース）、２４……無段変
速操作手段（Ｆ・Ｒ無段変速レバー）、５４……
駐車ブレーキ用油圧アクチユエータ、１０１……
リターン油路（ホース）、１０２……サクシヨン
部、ｂ……定圧側主油路、ＢＲ……駐車ブレーキ
（右サイドブレーキ）、Ｐ……油圧ポンプ。
Figure 1 is a diagram showing the hydraulic circuit according to the present invention, Figure 2 is a diagram showing the hydraulic circuit according to the present invention.
Figure 3 is a side view showing the oil circulation system, Figure 3 is a diagram showing its electric circuit, Figure 4a is the duration of the pulse width modulation of the inching valve, and the on-operation time T.
ON 1 ... and the period T; FIG. 4b is a diagram showing the correlation between the duration of pulse width modulation and vehicle speed; FIG. 4c is a diagram showing the correlation between the width of change and vehicle speed;
Figures a, b and 6 are flowcharts showing the operation of the present invention, Figure 7 is a sectional view showing the entire transmission case, and Figure 8 is a sectional view showing a handbrake that also serves as a parking brake. FIG. 9 is a side view showing the entire combine harvester. 1... Work vehicle (combine harvester), 19... Oil tank (mission case), 24... Continuously variable speed operation means (F/R continuously variable speed lever), 54...
Hydraulic actuator for parking brake, 101...
Return oil path (hose), 102... Suction part, b... Constant pressure side main oil path, BR... Parking brake (right side brake), P... Hydraulic pump.
Claims (1)
車ブレーキを作動する駐車ブレーキ用油圧アクチ
ユエータを設置し、かつ無段変速操作手段のニユ
ートラル操作に基づき前記駐車ブレーキを制動・
作動してなる作業車輛であつて、 前記駐車ブレーキ用油圧アクチユエータから排
出した圧油を送つているリターン油路を、前記油
圧ポンプがオイルタンクからオイルを吸上げるサ
クシヨン部に接続したことを特徴とする作業車輛
における駐車ブレーキ装置。[Scope of Claim for Utility Model Registration] A parking brake hydraulic actuator for operating a parking brake is installed in an oil path to which pressure oil is supplied by a hydraulic pump, and the parking brake is operated based on a neutral operation of a continuously variable transmission operation means. braking·
The working vehicle is characterized in that a return oil passage that sends pressure oil discharged from the parking brake hydraulic actuator is connected to a suction part where the hydraulic pump sucks oil from an oil tank. Parking brake device for work vehicles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987115185U JPH068950Y2 (en) | 1987-07-28 | 1987-07-28 | Parking brake device for work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987115185U JPH068950Y2 (en) | 1987-07-28 | 1987-07-28 | Parking brake device for work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6419563U true JPS6419563U (en) | 1989-01-31 |
| JPH068950Y2 JPH068950Y2 (en) | 1994-03-09 |
Family
ID=31356610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987115185U Expired - Lifetime JPH068950Y2 (en) | 1987-07-28 | 1987-07-28 | Parking brake device for work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH068950Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776802A (en) * | 2022-04-20 | 2022-07-22 | 哈尔滨东安汽车发动机制造有限公司 | Control method for automatically controlling and releasing parking of automatic transmission |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62168763A (en) * | 1986-01-21 | 1987-07-25 | Mitsubishi Agricult Mach Co Ltd | Parking brake device in working vehicle |
-
1987
- 1987-07-28 JP JP1987115185U patent/JPH068950Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62168763A (en) * | 1986-01-21 | 1987-07-25 | Mitsubishi Agricult Mach Co Ltd | Parking brake device in working vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776802A (en) * | 2022-04-20 | 2022-07-22 | 哈尔滨东安汽车发动机制造有限公司 | Control method for automatically controlling and releasing parking of automatic transmission |
| CN114776802B (en) * | 2022-04-20 | 2024-05-14 | 哈尔滨东安汽车发动机制造有限公司 | Control method for automatically controlling release of parking of automatic transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH068950Y2 (en) | 1994-03-09 |
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