JPH049502U

JPH049502U -

Info

Publication number: JPH049502U
Application number: JP4854790U
Authority: JP
Priority date: 1990-05-11
Filing date: 1990-05-11
Publication date: 1992-01-28

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示し、第１図は上部
リンクの係止状態を示す要部側面図、第１図Ａは
第１図の後面図、第２図はストツパーを連結プレ
ートの回動状態に回動した状態を示す要部側面図
、第２図Ａは第２図の要部後面図、第３図Ａは油
圧制御装置の左側側面図、第３図Ｂは油圧制御装
置の左側側面図、第４図は本考案を実施したトラ
クタにプラウを装着した状態を示す全体側面図、
第５図はロータリ耕耕耘機を装着した状態を示す
側面図である。第６図〜第８図は上部リンク係止
装置の他例を示し、第６図Ａは要部側面図、第６
図Ｂは第６図Ａの後面図、第６図Ｃは要部平面図
、第７図Ａは要部側面図、第７図Ｂは第７図Ａの
後面図、第７図Ｃは要部平面図、第８図Ａは要部
側面図、第８図Ｂは第８図Ａの後面図である。１…トラクタ、１１…ロアリンク、１２…油圧
制御機構、１３…プラウ、１５…三点リンク機構
、１７…上部リンク、１９…ロータリ耕耘機、２
５…後方カバー、２９…板バネ、３０…ボーデン
ワイヤ、３１…固定プレート、３３…連結プレー
ト、３６…ストツパー、３６ａ…規制部、３６ｂ
…係止溝（係止部）、４３…回動リンク、４４…
伝達ロツド、４５…伝達リンク機構、４７…取付
ボルト。 The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the main part showing the locked state of the upper link, Fig. 1A is a rear view of Fig. 1, and Fig. 2 shows the rotation of the stopper of the connecting plate. 2A is a rear view of the main parts of FIG. 2, FIG. 3A is a left side view of the hydraulic control device, and FIG. 3B is a side view of the hydraulic control device when it is rotated to the operating state. Fig. 4 is an overall side view showing a state in which a plow is attached to a tractor implementing the present invention;
FIG. 5 is a side view showing the rotary tiller installed. 6 to 8 show other examples of the upper link locking device, FIG. 6A is a side view of the main part, and FIG.
Figure B is a rear view of Figure 6A, Figure 6C is a plan view of the main part, Figure 7A is a side view of the main part, Figure 7B is a rear view of Figure 7A, and Figure 7C is the main part. FIG. 8A is a side view of the main part, and FIG. 8B is a rear view of FIG. 8A. DESCRIPTION OF SYMBOLS 1... Tractor, 11... Lower link, 12... Hydraulic control mechanism, 13... Plow, 15... Three-point link mechanism, 17... Upper link, 19... Rotary tiller, 2
5... Rear cover, 29... Leaf spring, 30... Bowden wire, 31... Fixing plate, 33... Connection plate, 36... Stopper, 36a... Regulating part, 36b
...Latching groove (locking part), 43... Rotating link, 44...
Transmission rod, 45...Transmission link mechanism, 47...Mounting bolt.

Claims

[Scope of utility model registration request]

The upper link constituting the three-point linkage mechanism is connected to a rotatable connecting plate via a spring at the rear of the machine, and the connecting plate is connected to a hydraulic control valve via a transmission linkage mechanism. A traction force control state in which the upper link is rotated against a spring by a compressive force acting on the upper link based on the traction resistance of the machine, and a plowing depth state in which the transmission link mechanism is fixed by a stopper rotated to a fixed position and set on another work machine. In a tractor that is connected to a detection sensor and can be selectively switched between a plowing depth control state and a plowing depth control state, the upper link, which is removed from the working machine, is placed in a position of the stopper that is away from a portion that restricts the rotation of the connection plate. A tractor upper link locking device that is integrally provided with a locking portion.