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A mobile loading machine having a frame and an operator's cab mounted thereon has a load arm assembly adapted to be pivotably mounted at a rear end of the frame, and support a power tool between a lowered position and a raised position at a forward end thereof. The load arm assembly includes an oute

A mobile loading machine having a frame and an operator's cab mounted thereon has a load arm assembly adapted to be pivotably mounted at a rear end of the frame, and support a power tool between a lowered position and a raised position at a forward end thereof. The load arm assembly includes an outer load arm section for supporting the tool, an inner load arm section pivotably mounted to the frame independent of the cab, and an intermediate load arm section integrally connected between the outer and inner load arm sections. The intermediate load arm section and inner load arm section are in overlapping relationship with each other such that the intermediate load arm section is positioned alongside a lowermost portion of the cab when the load arm assembly is in the lowered position to maximize the lateral visibility of the operator from the cab. The load arm assembly is a channel construction having a top wall and a bottom wall connected by a pair of sidewalls and the load arm assembly supports a supply line arrangement running along the load arm assembly to the power tool. A retaining device is positioned on the bottom wall between the extended portions of the sidewalls for protecting and concealing the supply line arrangement. A hydraulic cylinder arrangement is connected to the load arm assembly for moving the load arm assembly between the extended position and the retracted position. A safety bar is located adjacent the underside of the load arm assembly. The safety bar is retained in an inoperative position between the extended portions of the sidewalls and is movable to an operative position for holding the hydraulic cylinder arrangement in the extended position and preventing lowering of the load arm assembly.

대표청구항 ▼

[ I claim:] [1.] In a mobile loading machine having a frame and an operator's cab mounted thereon, a load arm assembly adapted to be pivotably mounted at a rear end to the frame, and to support a tool between a lowered position and a raised position at a forward end thereof, the load arm assembly co

[ I claim:] [1.] In a mobile loading machine having a frame and an operator's cab mounted thereon, a load arm assembly adapted to be pivotably mounted at a rear end to the frame, and to support a tool between a lowered position and a raised position at a forward end thereof, the load arm assembly comprising:an outer load arm section for supporting the tool;an inner load arm section pivotably mounted to the frame; andan intermediate load arm section connected between the outer and inner load arm sections;wherein a first one of the inner and intermediate load arm sections includes a first top wall, a first bottom wall and a first pair of sidewalls extending therebetween which cooperate to define an outwardly open passage and wherein a second one of the inner and intermediate load arm sections includes a second top wall, a second bottom wall and a second pair of connecting sidewalls extending therebetween;wherein the intermediate load arm section and the inner load arm section are interconnected at a joint at which the second one of the load arm sections is slidably received within the passage defined by the first one of the load arm sections, wherein the first and second top walls overlap and are interconnected with each other, the first and second bottom walls are interconnected with each other, and the first and second pairs of sidewalls overlap and are interconnected with each other;wherein the first top and bottom walls terminate at outer portions which are bent relative to inner portions defined thereby, such that the passage extends along a longitudinal axis oriented at an angle relative to a longitudinal axis along which the remainder of the first load arm section extends.