Three-point coupling device

A three-point coupling device for coupling a tractor to an implement, comprising two lower hitch arms which are articulated at the rear end of the tractor so as to be offset sideways with respect to the longitudinal axis of the tractor and whose free ends have each been provided with a catching hook having a lockable catching jaw which opens upwardly, with each lower hitch arm, via a lifting bar, being connected to a lifting arm movable by the power drive of the tractor;

• and comprising an upper hitch arm whose one end is articulated at the rear end of the tractor above the lower hitch arms in the region of the longitudinal axis and whose other end has been provided with a catching hook comprising a lockable catching jaw which opens downwardly or upwardly, with the catching hooks, for coupling purposes, being suitable for engaging, or being released from, the corresponding coupling points of the implement to be coupled, wherein the upper hitch arm is resiliently held by tensioned springs to move upwards or downwards relative to the tractor with the lower hitch arms, with the upper hitch arm moving in a direction opposite to the lower hitch arms, the upper hitch arm being held by providing two intermediate tension springs, one end of each of which is connected to the upper hitch arm and the other end of each of which is connected to a pulling means, which is first guided by guide means fixed to the rear of the tractor and then attached to lifting arms or lifting bars of the lower hitch arms or to the lower hitch arms themselves.