JPH037571U

JPH037571U -

Info

Publication number: JPH037571U
Application number: JP6845189U
Authority: JP
Priority date: 1989-06-12
Filing date: 1989-06-12
Publication date: 1991-01-24

Description

[Brief explanation of the drawing]

図面は本考案に係る農作業機の走行変速構造の
実施例を示し、第１図は変速レバーを第１揺動操
作位置に操作している状態を示す側面図、第２図
は変速レバーを第２揺動操作位置に操作している
状態を示す側面図、第３図は変速レバーを第１揺
動操作位置に操作している状態を示す平面図、第
４図は第３図に示す状態から変速レバーを第１軸
芯周りに揺動操作している状態を示す平面図、第
５図は第２図に示す状態から変速レバーを第１軸
芯周りに揺動操作している状態を示す平面図、第
６図は変速案内板付近の平面図、第７図は変速レ
バー、第１シフト軸及び第２シフト軸付近の縦断
背面図、第８図はミツシヨンケースの縦断正面図
、第９図は歩行型農作業機の全体側面図、第１０
図はミツシヨンケースにおけるＰＴＯ伝動系部分
の縦断側面図である。１……ミツシヨンケース、３９……第１シフト
軸、４０……第２シフト軸、４２……変速レバー
、４４……第１係合部、４５……第２係合部、４
６……第３係合部、４７……第１係止部、４８…
…第２係止部、４９……第３係止部、５０……第
４係止部、Ｐ_１……第１軸芯、Ｐ_２……第２軸芯
、Ａ……第１揺動操作位置、Ｂ……第２揺動操作
位置。 The drawings show an embodiment of the traveling transmission structure for an agricultural working machine according to the present invention, and FIG. 1 is a side view showing the transmission lever being operated to the first swing operation position, and FIG. 2 is a side view showing the transmission lever being operated to the first swing operation position. FIG. 3 is a side view showing a state in which the shift lever is operated to the second swing operation position, FIG. 3 is a plan view showing a state in which the gear shift lever is operated to the first swing operation position, and FIG. FIG. 5 is a plan view showing a state in which the gear shift lever is oscillated around the first axis from the state shown in FIG. 2, and FIG. FIG. 6 is a plan view of the vicinity of the gear shift guide plate, FIG. 7 is a longitudinal rear view of the gear lever, first shift shaft, and second shift shaft, and FIG. 8 is a longitudinal front view of the transmission case. Figure 9 is an overall side view of the walking agricultural machine, Figure 10
The figure is a longitudinal sectional side view of the PTO transmission system portion of the transmission case. DESCRIPTION OF SYMBOLS 1...Mission case, 39...1st shift shaft, 40...2nd shift shaft, 42...shift lever, 44...1st engagement part, 45...2nd engagement part, 4
6... Third engaging part, 47... First locking part, 48...
...Second locking part, 49...Third locking part, 50...Fourth locking part, _P1 ...First axis, _P2 ...Second axis, A...First swing Operation position, B...second swing operation position.

Claims

[Scope of utility model registration request]

A first shift shaft 39 and a second shift shaft 40 for traveling transmission that operate two types of gear transmission mechanisms arranged in series are protruded in parallel from the transmission case 1 so as to be insertable and removable. A second locking portion 48 and a fourth locking portion 50 are provided in parallel along the longitudinal direction of the second shift shaft 40 at the end of the protruding portion of the shaft 40, and
A first locking portion 47 is provided at the protruding end of the shift shaft 39 so as to face the second locking portion 48 on the inner side, and an L-shaped third locking portion 49 is provided on the first shift shaft 39 .
extends from the end of the protrusion to the vicinity of the outer fourth locking part 50, and is located at an intermediate portion between the protrusions of the first and second shift shafts 39, 40, and is L-shaped. The shift lever 42 is arranged so as to fit into the recess of the locking part 49, and can be freely rotated around a first axis _P1 that is substantially orthogonal to the plane containing the first and second shift shafts 39 and 40. , and a second axis P ₂ parallel to the first and second shift shafts 39 and 40 A speed change lever 42 is configured to be able to freely switch and swing between two positions around the second axis _P2. When the shift lever 42 is switched to the first swing operation position A, the first shift shaft 3
A first engaging portion 44 and a second engaging portion 4 protrude in opposite directions toward the 9 side and the second shift shaft 40 side.
5 engages with the first locking portion 47 and the second locking portion 48 of the first and second shift shafts 39, 40, respectively, and the shift lever 42 is rotated through a second oscillation around the second axis _P2 . In the state switched to the dynamic operation position B, the first and second engaging portions 44 and 45 engage the first locking portion 4.
7 and the second locking part 48, respectively, and the first
and agricultural work in which the third engaging portion 46 protruding from the speed change lever 42 is commonly engaged with the third locking portion 49 and the fourth locking portion 50 of the second shift shafts 39, 40. The machine's traveling transmission structure.