METHOD OF BUILDING TEMPORARY SNOW-AND-ICE COVERING AND TRAILING THERMAL CUTTING SNOW-COMPACTING PLANT Russian patent published in 2005 - IPC

FIELD: road-building facilities.

SUBSTANCE: invention is designed for laying snow-and-ice bed of winter roads on virgin snow without preparing soil base, for building winter roads on snow and ice surfaces in Arctic and Far North, Siberia and North-East regions of Russia, for building temporary winter roads for pipe laying under heavy conditions, for building motor roads on gas and oil fields in permafrost areas, for construction of snow-and-ice sites for helicopters, construction of sites on oil and gas fields, for building runways on air fields in Far North areas and for maintaining (Servicing) winter roads by increasing thickness of snow-and-ice bed and for construction of winter of roads of increased service life. According to proposed method, construction of monolithic snow-and-ice covering is carried out by ripping snow coating by disk rippers whose axes of rotation are arranged at angle. Preferably, equal to 45°, to direction of movement of plant, subsequent cutting of ripped snow mass with direction of mass in flow in suspended state to thermal device which can be tilted through 30°-90° from vertical towards said flow and equipped with burners operating on diesel fuel with provision of temperature in zone of flame contact with snow with 800°C-1200°C and distribution of flame with formation of solid zone of heating of snow mass in cross section to provide supersaturation of snow mass with water and subsequent laying, vibrocompacting and rolling down with possibility of regulation of specific static pressure on snow-and-ice to be compacted. For this purpose thermal cutting snow-compacting plant is used containing frame with metal platform suspended, preferably horizontally, on ball-joint rods and hydraulic cylinders. Said platform is hydraulically controlled form operator's cab. Metal platform carries devices for changing snow into snow mass supersaturated with water and putting said mass into road bed trough. Said devices are made in form of disk ripper for snow covering consisting of two axle-shafts arranged at angle, preferably, 45°, to longitudinal axis of plant, creating snow flow, mechanical cutter connected though reduction gear with electric motor, thermal device which can be tilter through 30°-90° from vertical towards said flow and equipped with at least five burners operating on diesel fuel with control of delivery of fuel and air fed to burner nozzles from operator's cab, device for distributing burner flame and forming snow mass supersaturated with water over width of zone of heating of snow mass delivered by cutter, housing of thermal device used for placing and primary leveling of supersaturated snow mass, thermal vibroplate for compacting and leveling body of snow and ice bed mounted after housing of thermal device and roll on pneumatic tires to regulate specific static pressure on snow-and-ice bed to be compacted. Frame of motor grader without front suspension with trailing device is used as frame of plant. Rear chassis is provided with pneumatic tires which can be replaced by metal skis.

EFFECT: improved efficiency owing to increased efficiency of thermal treatment of snow at reduced specific energy consumption owing to possibility of selection of vector of temperature pattern.

3 cl, 1 dwg