Abstract: The present invention relates to the field of rock crushers, in particular, rock crusher attachments for earth moving equipment or the like. The rock crusher attachment includes a front bucket portion configured for scooping rocks to be crushed and a rear crusher portion connected to and in communication with the rear of the bucket portion. The crusher portion includes a housing and a crushing assembly accommodated within the housing. The housing including a pair of spaced apart side panels. The crushing assembly has a lower jaw fixed between the side panels of the housing and an upper movable jaw mounted opposite and spaced apart from the lower jaw. The upper movable jaw assembly includes a support, an upper jaw plate attached to the underside of the support and a jaw-actuating drive assembly operable to urge the upper movable jaw assembly to move between an open jaw setting and a closed jaw setting. The support is pivotally connected between the side panels adjacent the front of the housing.

Abstract: The present invention relates to the field of rock crushers, in particular, rock crusher attachments for earth moving equipment or the like. The rock crusher attachment includes a front bucket portion configured for scooping rocks to be crushed and a rear crusher portion connected to and in communication with the rear of the bucket portion. The crusher portion includes a housing and a crushing assembly accommodated within the housing. The housing including a pair of spaced apart side panels. The crushing assembly has a lower jaw fixed between the side panels of the housing and an upper movable jaw mounted opposite and spaced apart from the lower jaw. The upper movable jaw assembly includes a support, an upper jaw plate attached to the underside of the support and a jaw-actuating drive assembly operable to urge the upper movable jaw assembly to move between an open jaw setting and a closed jaw setting. The support is pivotally connected between the side panels adjacent the front of the housing.

Abstract: A portable rock crusher (10)is adapted for attachment to a boom (16) of an earthmoving vehicle (14). The crusher has a hopper (32) with a material inlet (49) and a material outlet (44) spaced from the inlet. A pair of jaws (46,48) is located within the hopper and positioned between the inlet and outlet. The jaws are movable relative to one another to vary the spacing therebetween and an actuator (68) is provided to control relative movement between the jaws. Material moving from the inlet to the outlet thereby passes between the jaws and is crushed upon relative movement of the jaws to provide an aggregate at the outlet.