JPS63148112U

JPS63148112U -

Info

Publication number: JPS63148112U
Application number: JP4193987U
Authority: JP
Priority date: 1987-03-19
Filing date: 1987-03-19
Publication date: 1988-09-29

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す要部側面図、第
２図は全体側面図、第３図は一部正面図、第４図
はトラクタ側と作業機側の連結を解除した状態を
示す側面図、第５図は伸縮自在継手軸と支持部と
の支持構造を示す断面図、第６図は第２図の要部
拡大図、第７図は他の実施例を示す要部側面図で
ある。１…トラクタ、４…ロータリ耕耘装置、５…油
圧装置、７…ロアリンク、９…トツプリンク、１
０…ＰＴＯ軸、１４…フレーム、１６…下部連結
板、１８…嵌合凹部、１９…フツクプレート、２
４…スプリング、２８…上部連結板、６３…入力
軸、７１…上部連結ピン、７５…下部連結ピン、
８１…抜止め面。 Fig. 1 is a side view of essential parts showing an embodiment of the present invention, Fig. 2 is an overall side view, Fig. 3 is a partial front view, and Fig. 4 shows a state in which the connection between the tractor side and the working machine side is released. 5 is a cross-sectional view showing the support structure between the telescopic joint shaft and the support part, FIG. 6 is an enlarged view of the main part of FIG. 2, and FIG. 7 is a side view of the main part showing another embodiment. It is a diagram. 1...Tractor, 4...Rotary tilling device, 5...Hydraulic device, 7...Lower link, 9...Top link, 1
0... PTO shaft, 14... Frame, 16... Lower connecting plate, 18... Fitting recess, 19... Hook plate, 2
4... Spring, 28... Upper connecting plate, 63... Input shaft, 71... Upper connecting pin, 75... Lower connecting pin,
81... Retaining surface.

Claims

[Scope of utility model registration request]

A work implement 4 that exerts forward force during driving is removably connected to the tractor 1 through a three-point linkage mechanism consisting of a central top link 9 and a pair of left and right lower links 7. In a vehicle that can be raised and lowered by a lifting device 5 and in which the PTO shaft 10 of the tractor 1 and the input shaft 63 of the working machine 4 are releasably connected to each other, the ends of the top link 9 and both lower links 7 on the working machine 4 side. are connected by the connecting body 14, and when the connecting body 14 rises, the work machine 4
Upper engaging portion 28 provided at the upper center of the connecting body 14
The upper cover engaging portion 71 is connected to the upper cover engaging portion 71 so as to be relatively rotatable about the axis in the left-right direction, and the lower portions on both sides of the connecting body 14 are The lower sheath engaging part 75 is engaged with the lower engaging part 16 provided in the lower sheath engaging part 75, and either the lower engaging part 16 or the lower sheath engaging part 75 has a fitting recess 18 that opens to the other side. An engaging body 16 having
The other side is a connecting pin 75 that is removably fitted into the fitting recess 18 , and a side view fitting recess is provided on the engaging body 16 side to releasably prevent the connecting pin 75 from coming off the fitting recess 18 . A hook plate 19 having a retaining surface 81 that protrudes only toward the front in the direction of detachment of the connecting pin 75 and comes into contact with the connecting pin 75 is pivotally supported within the hook plate 18 . A coupling device for a tractor and a working machine, characterized in that it is equipped with a spring mechanism 24 that resiliently biases the tractor.