BULLDOZER Russian patent published in 2006 - IPC E02F3/76 

FIELD: mechanical engineering; road-building machinery.

SUBSTANCE: invention relates to earth-moving machines of bulldozer type and it is designed for working firm and frost soils. To enlarged operating capabilities additional working member of bulldozer is made up of two supporting bars rigidly secured on pushing bars to which shaft with disk cutters is connected. Said disk cutters rotate in direction of movement of bulldozer, being arranged square to plane of cutting. Hydraulic motor is rigidly connected with shaft. Rotating cutters cut soil before blade, thus reducing resistance to cutting W_c as a result of free cutting of soil by at two open walls of cut. As cutters rotate in direction of movement of bulldozer and cut soil from top to bottom, arising horizontal component of cutting resistance force Rx is directed forward along working movement of bulldozer and "pushes" bulldozer compensating part of power losses for overcoming resistance to movement of bulldozer.

EFFECT: enlarged operating capabilities.

3 dwg