Mounting structure for a loader attachment

Material or article handling – Vertically swinging load support – Shovel or fork type

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Details

172275, E02F 328

Patent

active

052248160

ABSTRACT:
A tractor-mounted loader has a quick coupler mounted to forward ends of the boom arms thereof. The quick coupler includes a pair of attachment holders having their lower ends respectively pivotally connected to the pair of arms and selectively pivotable by a pair of attachment tilt cylinders. An attachment in the form of a bucket includes a pair of connecting brackets including pins engageable by recesses in the upper ends of the holders and receptacles for receiving coupler elements carried by the holders. A pair of latch mechanisms are respectively carried by the pair of brackets and include spring-loaded latch pins which normally assume a latch position blocking passage of the coupler elements to or from the receptacles but which include ramp surfaces that cooperate with ramp surfaces of the coupler elements to cause the pins to be automatically moved from their latch positions to permit passage of the coupler elements into the receptacles during mounting of the attachment to the attachment holders. The latch pins may be manually moved to an unlatch position from which they are automatically released by being contacted by wedges carried by the holders when the latter are moved to a position disposing the coupler elements free of the receptacles during detachment of the attachment from the holders. An alternate embodiment shows the coupler elements formed by the mounting brackets and the receptacles formed by the holders with the latch mechanisms being mounted to the holders.

REFERENCES:
patent: 3985249 (1976-10-01), Aker et al.
patent: 3991890 (1976-11-01), Frank
patent: 4067467 (1978-01-01), Datta et al.
patent: 4085856 (1978-04-01), Westendorf
patent: 4106645 (1978-08-01), Janish
patent: 4136792 (1979-01-01), Wilson
patent: 4846624 (1989-07-01), Hohn
patent: 4986722 (1991-01-01), Kaczmarczyk et al.

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