JPH0216367U

JPH0216367U -

Info

Publication number: JPH0216367U
Application number: JP9542888U
Authority: JP
Priority date: 1988-07-19
Filing date: 1988-07-19
Publication date: 1990-02-01

Description

[Brief explanation of drawings]

第１図は油圧式操向機構を具備した変速装置の
全体斜視図、第２図はミツシヨンケースＭの外壁
部に固設するシリンダーケースＣと切換電磁弁Ｓ
の部分の左側側面図、第３図は同じく前面一部断
面図、第４図は第３図の―断面矢視図、第５
図は第６図の―断面矢視図、第６図は平面図
、第７図は第４図の―断面矢視図、第８図は
底面図、第９図は油圧式操向機構の油圧回路図で
ある。Ｃ…シリンダーケース、ＣＶ…自動操向電磁弁
、Ｓ…切換電磁弁、Ｍ…ミツシヨンケース、３Ｌ
，３Ｒ…手動操向用ピストン、４Ｌ，４Ｒ…自動
操向用ピストン、５Ｌ，５Ｒ…操向アーム、１９
…手動操向レバー、２１Ｌ，２１Ｒ…制動操向ス
イツチ、３０Ｌ，３０Ｒ…微調節操向スイツチ。 Fig. 1 is an overall perspective view of a transmission equipped with a hydraulic steering mechanism, and Fig. 2 shows a cylinder case C and a switching solenoid valve S fixed to the outer wall of a transmission case M.
Fig. 3 is a front partial sectional view, Fig. 4 is a cross-sectional view along the - sectional arrow of Fig. 3,
The figures are a cross-sectional view of Figure 6, a top view, a top view, a cross-sectional view of Figure 4, a bottom view, and a bottom view of the hydraulic steering mechanism. It is a hydraulic circuit diagram. C...Cylinder case, CV...Automatic steering solenoid valve, S...Switching solenoid valve, M...Mission case, 3L
, 3R...Piston for manual steering, 4L, 4R...Piston for automatic steering, 5L, 5R...Steering arm, 19
...Manual steering lever, 21L, 21R...Brake steering switch, 30L, 30R...Fine adjustment steering switch.

Claims

[Scope of Claim for Utility Model Registration] (1) A cylinder case C is installed on the outside of a transmission case M that contains a steering clutch and a steering brake.
and in the cylinder case C are automatic steering pistons 4L, 4 that connect and disconnect only the steering clutch.
R, and a manual steering piston 3 that further applies the steering brake after the steering clutch is in the "disengaged" state.
A hydraulic steering mechanism characterized by the addition of L and 3R. (2) Steering arms 5L and 5R having a first operating range that puts the steering clutch in the "disengaged" state and a second operating range that then operates up to the steering brake are arranged outside the mission case M; The steering arm 5L, the automatic steering pistons 4L, 4R, which are capable of stroke movement only in the first operating range, and the manual steering pistons 3L, 3R, which are capable of stroke movement to the second operating range, are connected to the steering arm 5L, respectively. The hydraulic steering mechanism according to claim (1), characterized in that it is pivotally connected to 5R.