JPS643505U

JPS643505U -

Info

Publication number: JPS643505U
Application number: JP9802287U
Authority: JP
Priority date: 1987-06-25
Filing date: 1987-06-25
Publication date: 1989-01-10

Description

[Brief explanation of the drawing]

第１図乃至第６図は本考案の一実施例を示し、
第１図及び第２図の各図は相異なる作動状態を示
す連結体や耕耘装置の一部の縦側断面図、第３図
は同一部断面正面図、第４図は全体側面図、第５
図は第３図のＡ―Ａ線矢視断面図、第６図は第１
図のＢ矢視図、第７図乃至第９図の各図は本考案
とは別のトラクタと作業機の連結装置の一例を示
す一部断面側面図である。１……トラクタ、３……作業機昇降用油圧装置
、９……３点リンク機構、１０……トツプリンク
、１１……ロアリンク、１４……連結体、２１，
２２……上・下係合部、３０……トツプマスト、
４０……固定体、４１……揺動体、４２……支軸
、４５，４６……上・下連結軸、４８……阻止装
置、Ｒ……ロータリ耕耘装置（作業機）。 1 to 6 show an embodiment of the present invention,
Figures 1 and 2 are longitudinal sectional views of parts of the coupling body and tilling device showing different operating states, Figure 3 is a partially sectional front view of the same, and Figure 4 is an overall side view; 5
The figure is a sectional view taken along the line A-A in Figure 3, and Figure 6 is a cross-sectional view taken along the line A-A in Figure 3.
The view in the direction of arrow B in the figure and each of FIGS. 7 to 9 are partially sectional side views showing an example of a coupling device for a tractor and a working machine that is different from the present invention. DESCRIPTION OF SYMBOLS 1...Tractor, 3...Hydraulic system for lifting and lowering work equipment, 9...3-point link mechanism, 10...Top link, 11...Lower link, 14...Connection body, 21,
22...Upper/lower engaging part, 30...Top mast,
40... Fixed body, 41... Rocking body, 42... Support shaft, 45, 46... Upper/lower connecting shaft, 48... Blocking device, R... Rotary tilling device (work machine).

Claims

[Claims for Utility Model Registration] The tractor 1 is equipped with a three-point link mechanism 9 that is movable up and down, consisting of a central top link 10 and a pair of left and right lower links 11.
The working side ends of both lower links 11 are connected by a connecting body 14, and the connecting body 14 includes an upper engaging part 21 located in the center in the left-right direction, and a pair of left and right lower engaging parts located on the left and right below the upper engaging part 21. The upper engaging part 21 detachably engages with the tip of the top mast 30 of the working machine R as the connecting body 14 rises;
After this engagement, as the connecting body 14 further rises, the work implement R rotates around the upper engaging portion 21 toward the tractor 1 due to its own weight, and both lower engaging portions 22 move on both left and right sides of the work implement R. At least the distal end side of the top mast 30 is provided with a blocking device 48 that releasably engages with the top mast 30 and releasably prevents disengagement between the lower engaging portions 22 and the work implement R. The swinging body 41 is configured to be able to swing forward and backward with respect to the machine frame of the machine R, and the upper engaging portion 21 is engaged with the tip of the swinging body 41 when the swinging body 41 is at its maximum swinging position on the tractor side. The maximum rocking position of the rocking body 41 on the side opposite to the tractor is the position where the upper and lower engaging parts 21 and 22 engage with the work implement R, and the rocking body 41 at the maximum rocking position on the tractor side A coupling device for a tractor and a working machine, characterized in that when the coupling body 14 is further raised in a state in which the engaging portion 21 is engaged, the swinging body 41 is moved to a maximum swinging position on the side opposite to the tractor.