JPS63196729U

JPS63196729U -

Info

Publication number: JPS63196729U
Application number: JP8943787U
Authority: JP
Priority date: 1987-06-09
Filing date: 1987-06-09
Publication date: 1988-12-19

Description

[Brief explanation of the drawing]

第１図は本考案に係る強制切換リンク機構を具
備する前輪舵取り車両（トラクター）の側面図、
第２図は同駆動系統図、第３図は増速切換機構の
配置説明図、第４図は増速切換機構の拡大構造説
明図、第５図は操作機構の構造説明図、第６図及
び第７図は同操作機構の拡大説明図、第８図は操
舵機構の側面図、第９図は同背面図、第１０図は
同平面図、第１１図は強制切換リンク機構の拡大
説明図、第１２図は同リンク機構の展開説明図、
第１３図は第１２図の―線断面図。Ａ：トラクター、Ｂ：増速切換機構、Ｃ：操作
機構、Ｄ：操舵機構、Ｍ：強制切換リンク機構、
Ｌ：高低速切換レバー、Ｌ′：強制切換レバー、
１：前輪、２：後輪、１４：前輪駆動軸、２１：
フロントアクスルケース、５０：ピツトマンアー
ム支持軸、７３：ハンドルギヤボツクス。 FIG. 1 is a side view of a front wheel steering vehicle (tractor) equipped with a forced switching link mechanism according to the present invention;
Fig. 2 is a diagram of the drive system, Fig. 3 is an explanatory diagram of the arrangement of the speed increase switching mechanism, Fig. 4 is an enlarged structural explanatory diagram of the speed increase switching mechanism, Fig. 5 is an explanatory diagram of the structure of the operating mechanism, and Fig. 6 7 is an enlarged illustration of the operating mechanism, FIG. 8 is a side view of the steering mechanism, FIG. 9 is a rear view of the same, FIG. 10 is a plan view of the same, and FIG. 11 is an enlarged explanation of the forced switching link mechanism. Figure 12 is a developed explanatory diagram of the link mechanism,
FIG. 13 is a sectional view taken along the line -- in FIG. 12. A: Tractor, B: Speed-up switching mechanism, C: Operating mechanism, D: Steering mechanism, M: Forced switching link mechanism,
L: High/low speed switching lever, L': Forced switching lever,
1: Front wheel, 2: Rear wheel, 14: Front wheel drive shaft, 21:
Front axle case, 50: Pittman arm support shaft, 73: Handle gear box.

Claims

[Scope of utility model registration request]

A speed increase switching mechanism B configured to drive the front wheels 1 and rear wheels 2 and capable of freely switching between constant speed and speed increase between the front wheel drive shaft 14 and the front axle case 21.
The speed increasing switching mechanism B is interlocked and connected to the high/low speed switching lever L, so that the speed increasing switching mechanism B operates to increase speed only when the lever L is operated for low speed switching. A forced switching link mechanism M is interposed between the speed increase switching mechanism B and the speed increase switching mechanism B, so that the speed increase of the speed increase switching mechanism B can be forcibly canceled even when low speed switching is performed by the high/low speed switching lever L. A forced switching link mechanism in a front wheel steering vehicle equipped with a quick switching mechanism.