WORKING FACILITIES OF HYDRAULIC BULLDOZER Russian patent published in 2006 - IPC E02F3/76 

FIELD: building machines, particularly working facilities of hydraulic bulldozer used for culvert, road and pavement forming, for debris removal and so on.

SUBSTANCE: working facilities comprises dump with cut made in upper part thereof and gripping device pivotally connected to the blade. The gripping device is made as rotary section with corbel and gripping tooth fixedly secured to the rotary section, as well as blade and gripping device control hydraulic cylinders. The blade has additional cut. The cuts are symmetric relatively blade center and spaced apart a distance equal to 1/3 of blade length. Gripping device is additionally provided with rotary section. All sections have independent control means and are installed in gripping device cuts.

EFFECT: elimination of need for installation of protective screen, which closes blade orifice during earth excavation, increased structural rigidity, improved adaptability of gripping device to different working conditions due to possibility of separate gripping device section operation.

2 cl, 2 dwg