JPH0462959U

JPH0462959U -

Info

Publication number: JPH0462959U
Application number: JP10553890U
Authority: JP
Priority date: 1990-10-06
Filing date: 1990-10-06
Publication date: 1992-05-28

Description

[Brief explanation of the drawing]

図面は本考案に係る作業車の走行用変速操作構
造の実施例を示し、第１図、第２図は夫々該構造
を示す支持ケース部の平面図、側面図、第３図は
摩擦式無段変速機構の入力操作部の構造を示す平
面図、第４図は正逆転切換機構の入力操作部の構
造を示す平面図、第５図、第６図は夫々操作レバ
ーが最高速位置に操作されたときの状態を示す平
面図、側面図、第７図、第８図は夫々操作レバー
が後進位置に操作されたときの状態を示す平面図
、側面図、第９図は摩擦式無段変速機構の構造を
示す断面図、第１０図は操作経路を示す平面図、
第１１図はバインダーの側面図、第１２図は操作
経路の別実施例を示す平面図、第１３図は操作経
路の従来例を示す図である。１……操作レバー、３６……正転操作経路、３
６ａ……第１操作経路、３６ｂ……第２操作経路
、３６ｃ……横経路、３７……中立操作経路、３
８……逆転操作経路、Ａ……摩擦式無段変速機構
、Ｗ……操作経路、ＦＨ……正転最高速位置、Ｆ
Ｌ……正転最低速位置、Ｎ……中立位置、Ｒ……
逆転位置。 The drawings show an embodiment of the speed change operation structure for traveling of a work vehicle according to the present invention, and FIGS. 1 and 2 are a plan view and a side view of the support case part showing the structure, respectively, and FIG. 3 is a non-friction type transmission structure. FIG. 4 is a plan view showing the structure of the input operation section of the forward/reverse switching mechanism; FIGS. 5 and 6 are respectively when the operation lever is operated to the highest speed position. Figures 7 and 8 are respectively a plan view and a side view showing the state when the operating lever is moved to the reverse position, and Figure 9 is a friction type stepless view. A sectional view showing the structure of the transmission mechanism, FIG. 10 is a plan view showing the operating path,
FIG. 11 is a side view of the binder, FIG. 12 is a plan view showing another embodiment of the operating path, and FIG. 13 is a diagram showing a conventional example of the operating path. 1... Operation lever, 36... Forward rotation operation path, 3
6a...first operation route, 36b...second operation route, 36c...lateral route, 37...neutral operation route, 3
8... Reverse operation route, A... Friction type continuously variable transmission mechanism, W... Operation route, FH... Forward rotation maximum speed position, F
L...Forward rotation lowest speed position, N...Neutral position, R...
Reversed position.

Claims

[Scope of utility model registration request]

The friction type continuously variable transmission mechanism A allows continuously variable forward rotation and constant speed ratio reverse rotation using a single operating lever 7.
This is a speed change operation structure for traveling of a work vehicle which can be selectively operated by
H, and a first operating path 36a for moving and traveling along the front-rear direction, and a rear normal rotation lowest speed position FL.
and a second section for work traveling along the front and rear direction.
Operation route 36b and this second operation route 36b
A normal rotation operation path 36 that communicates the front end of the F with the rear end of the first operation path 36a and includes a horizontal path 36c extending in the left-right direction, and the normal rotation lowest speed position F.
The operating lever 7 has a stepped shape consisting of a neutral operating path 37 along the left-right direction that switches between L and the neutral position N, and a reversing operating path 38 that runs along the front-rear direction and switches between the neutral position M and the rear reversing position R. A speed change operation structure for traveling of a work vehicle, which constitutes an operation route W.