Excavator coupling system

An excavator coupling system for coupling a trailer hitch device to a dozer blade of an excavator, the dozer blade having a front surface and a rear surface, the excavator coupling system comprising:

• a keyhole component to be disposed on the dozer blade rearward of the front surface, the keyhole component including a keyhole member;
• the trailer hitch device including a key component configured to form a positive connection with the keyhole component to couple the trailer hitch device to the dozer blade, wherein the keyhole component and the key component provide for coupling the trailer hitch device to the dozer blade without accessing a rear portion of the dozer blade;
• wherein the trailer hitch device includes a mounting portion to receive a trailer hitch;
• wherein the trailer hitch device includes a shaft journal and at least one radially outwardly facing tooth insertable into the keyhole component for forming the positive connection with the keyhole component within the dozer blade between the front surface and the rear surface;
• and
• wherein the trailer hitch device includes a locking device to secure the trailer hitch device to the keyhole component in an operating position, wherein the locking device is movable along a longitudinal direction of the shaft journal between a locking position and an unlocking position, wherein, in the locking position, the locking device engages the keyhole member of the keyhole component to secure the trailer hitch device in the operating position.