JPS61207112U

JPS61207112U -

Info

Publication number: JPS61207112U
Application number: JP9043485U
Authority: JP
Priority date: 1985-06-14
Filing date: 1985-06-14
Publication date: 1986-12-27

Description

[Brief explanation of the drawing]

第１図、第２図は本考案に係る接地尾輪の昇降
装置の実施例を示し、第１図は要部の一部切欠側
面図、第２図は耕耘機全体の側面図である。第３
図は別の実施例を示す要部の一部切欠側面図であ
り、第４図は従来の昇降装置を示す縦断側面図で
ある。５……フレーム、６……接地尾輪、９……昇降
操作用螺軸、１２……手動ハンドル、１３……ア
クチユエータ、１３ａ……出力軸、１４……切換
機構、１５……受動ギヤ、１６……駆動ギヤ、１
７……クラツチ、１８……係合部。 1 and 2 show an embodiment of a ground-contact tailwheel lifting device according to the present invention, FIG. 1 being a partially cutaway side view of the main part, and FIG. 2 being a side view of the entire tiller. Third
The figure is a partially cutaway side view of the main part showing another embodiment, and FIG. 4 is a longitudinal sectional side view showing a conventional lifting device. 5... Frame, 6... Ground tail wheel, 9... Spiral shaft for lifting/lowering operation, 12... Manual handle, 13... Actuator, 13a... Output shaft, 14... Switching mechanism, 15... Passive gear, 16... Drive gear, 1
7...clutch, 18...engaging portion.

Claims

[Claims for Utility Model Registration] A manual handle 12 and an actuator 13 that can be driven in forward and reverse directions are provided on the side of the frame 5 that supports the screw shaft 9 for raising and lowering the ground tail wheel 6.
2, 13 and the screw shaft 9, the manual handle 1
A mechanism 14 that can be freely switched between a manual lifting operation state in which the rotational force of the actuator 2 is transmitted to the screw shaft 9 and a drive lifting operation state in which the driving rotational force of the actuator 13 is transmitted to the screw shaft 9.
In the grounding tail wheel lifting device, the switching mechanism 14 is configured to selectively switch between the two states described above in conjunction with push/pull operations of the manual handle 12. lift device. The switching mechanism 14 includes a frame 5
On the side, a drive gear 16 that constantly meshes with a passive gear 15 fixed to the upper end of the screw shaft 9 is attached to the manual handle 12.
The manual handle 12 is rotatably supported around a coaxial core, and is disposed between the drive gear 16 and the output shaft 13a of the actuator 13, and is in a non-transmission state when the manual handle 12 is operated to the push-in position, and when the manual handle 12 is operated to the pull-out position. The clutch 17 is switched to a transmission state when
In addition, the manual handle 12 includes:
When the manual handle 12 is operated to the push-in position, the engaging portion 18 is fitted into the inner circumferential surface of the drive gear 16 in an integrally rotating state, and when the manual handle 12 is operated to the pull-out position, the engagement portion 18 separates from the drive gear 16. A lifting device for a ground tail wheel as set forth in claim 1 of the registered utility model claim.