A coupler with an actuator arrangement for controlling front and rear latches

摘要

A coupler comprises a first jaw 54 with a movable first latch 74, a second jaw 52 and hook latch 64 having a retracted position and at least one advanced position, and a blocking member 100. The coupler further comprising an actuator arrangement comprising two linked hydraulic actuators 78 & 80. The first of the actuators 78 is for selectively moving both the blocking member 100 and the first latch 74 and a second of the actuators 80 being for selectively moving the second latch 64, wherein the hydraulic link is such that activation of hydraulic pressure in the actuator arrangement in a manner intended for causing a retraction of the second actuator, for retracting the second latch towards the second latch's retracted position, also causes an actuation of the first actuator to extend that first actuator so as to move at least the first latch into its non-latching position.