PIT MACHINE Russian patent published in 2013 - IPC E02F5/02 F41H7/00 

FIELD: transport.

SUBSTANCE: pit machine comprises caterpillar chassis including control compartment, sealed compartment for engine and transmission accommodating ICE. Soil processing equipment is arranged on chassis body and equipped with soil removal mechanism, dozer equipment arranged ahead of control compartment while pit equipment is located at chasses tail. Armored multi-seat control compartment for three-person crew, including commander, drive and. To operate pit equipment, chassis tail is equipped with armored cabin to monitor operation of pit equipment and to control said operation. Behind said sealed control compartment arranged is sealed engine compartment with ICE input reduction gear incorporating forward power takeoff shaft while backward output shaft of said reduction gear serves to engage gearboxes with distributors and final drives mounted at chassis tail. Note here that kinematic circuit from reduction gear shaft to gearbox incorporated hydraulic torque reducer composed of differential adder of torques of reduction gear output shaft and hydraulic motor supplied by controlled hydraulic pump engaged with reduction gear power takeoff shaft. First torque is transmitted by cardan shaft extending through engine compartment accommodating independent drive of pit equipment. Pit equipment proper comprises cutter with cutting element arranged on side centerline from helical line with number of turns equal, for example, to one turn with spacing of cutting elements that allows impactless and continuous soil cutting over cutter height. Turntable with cutting elements on outer centerline surface is fitted on rotary drive shaft to reciprocate relative to said rotary drive. Rotary drive shaft is engaged with cut soil thrower, for example, of blade type that allows soil throwing to the left or to the right. Complex cutting mechanism with parallelogram-type rod mechanism with power drive allows either digging position or transport position while dozer equipment over blade length equals caterpillar chassis width.

EFFECT: higher efficiency and rate of digging.

5 cl, 2 dwg