초록 ▼

A tractor has a three-point link assembly comprising a top link and opposed lower links which are connected together by a connecting assembly at their ends toward a working implement. The connecting assembly comprises an upper connector and lower connectors removably in engagement with corresponding

A tractor has a three-point link assembly comprising a top link and opposed lower links which are connected together by a connecting assembly at their ends toward a working implement. The connecting assembly comprises an upper connector and lower connectors removably in engagement with corresponding connectable portions of the implement. The PTO shaft of the tractor is connected to an input shaft of the implement by an extendable transmission shaft having a pair of tractor joint and implement joint at its opposite ends. The connecting assembly has a clutch for separably operatively connecting an externally splined portion of the implement input shaft to an internally splined portion of the implement joint. The clutch comprises a guide fixed to the connecting assembly and extending substantially longitudinally of the tractor, a tubular case provided in the guide movably axially thereof and an operating assembly for the case. The implement joint is inserted in the case.

대표청구항 ▼

A device for disconnectably connecting a tractor (T) with a working implement (C); said tractor (T) being equipped with a PTO shaft, a three-point link assembly which is comprised of a central top link and a pair of opposite-sided lower links, and a lifting unit for positioning the three-point link

A device for disconnectably connecting a tractor (T) with a working implement (C); said tractor (T) being equipped with a PTO shaft, a three-point link assembly which is comprised of a central top link and a pair of opposite-sided lower links, and a lifting unit for positioning the three-point link assembly; said working implement (C) being equipped with a power input shaft which has an external splined portion, and with a connectable arrangement comprising an upper connectable portion, and a pair of lower side connectable portions; said device for disconnectably connecting comprising: a connecting assembly joining the top link and the two lower links, a transmission shaft retractably connected to the PTO shaft, a joint having an internally splinted portion being provided at an end of the transmission shaft such that the internally splined portion is to couple with the externally splined portion of the implement (C); said connecting assembly including an upper connector to be coupled to the upper connectable portion of the implement (C), a pair of side lower connectors to be coupled to the lower said connectable portions, and a clutch to removably connect the joint with the power input shaft of the implement (C), said clutch including a guide having a cylindrical form which is connected to the connecting assembly, and a tubular case which is inserted into the guide to hold the joint pivotably, a coil spring positioned between the guide and the tubular case, to retain the tubular case to be axially and radially movable in relation to the guide, and the operating assembly to move the tubular case axially in relation to the guide, said operating assembly including shifter means which is pivotably supported on the guide to shift by a pivotal action the tubular case axially such that the internally splined portion of the joint and the externally splined portion of the input shaft are selectively coupled; a holder which is pivotably held by the guide to hold by a pivotal action the tubular case at a coupled position and a decoupled position; coupling means for operatively connecting the shifter means and the holder; and an operating level means for operating pivotal actions of the shifter means and holder.