Coupling hook for a lower steering arm of an agricultural tractor, wherein the coupling hook (1) a hook body (3) with at least one receiving device (4) for a coupling body (2) and at least one receiving chamber (5), in which at least one locking bar (6) is held between a the coupling body (2) overlapping and locked locking position and a so far into the receiving chamber (5) retracted release position is that the coupling body (2) from the receptacle (4) can be seen from, wherein the coupling body (2) the locking bar (6) when being pressed in the receptacle (4) can be adjusted in an activation position, so that the locking bar (6) automatically into the closed position, characterized in that the locking bar (6) with at least one nose-shaped protrusion (9) of at least one adjustable locking lever (10), is in operative connection the the locking bar (6) in its locking position is held in place, so that it is a from the coupled coupling body (2) and which acts on the locking bar (6) and is able to withstand the force acting on the one hand, by a for receiving (4) directed force..Kuplaj kancası (1) bir kuplaj gövdesine (2) yönelik bir alıcı elemanı (4) ve bir alıcı haznesi (5) içinde bir sabitleme cıvatasının (6) kuplaj gövdesi ve sabitleme konumu arasında tutulduğu bir kanca gövdesine (3) sahiptir. Sabitleme cıvatası bir ayarlanabilir sabitleme manivelasına (10) faal olarak bağlanan bir kam (9) ile donatılmaktadır.
