Two families, according to the accessory :
Universal couplers : quick couplers that take the accessories by the 2 original pins. Synonyms : adapters, non-dedicated couplers
Dedicated quick couplers : quick couplers that take the accessories through a compatible system, specifically designed.
Three categories, according to the operation :
MIXED quick coupler : engagement and locking are ensured from the cabin but the disengagement is executed by human effort on the quick coupler.
Engage & locking from the cabManual unlocking
PILOTED quick coupler : the movements of any element of the engagement and locking system are made by an energy source (ex mechanic, hydraulic, electric).
Engage & locking from the cabUnlocking from the cab !
MANUAL quick coupler : the movements of the engagement and locking system are made by human effort on the quick coupler itself.
The design of a quick coupler with engagement from the operator’s station
in combination with a manual safety system (ex. a locking pin)
is prohibited !
NOTE : This prevents unexpected detachment of the accessory due to the non-use of the locking mechanism.