When the device covers the pavement graders perform processes: profiling the layer of soil treated base, the formation of crushed stone and gravel in a longitudinal shaft, a prism, laying asphalt mixture layer coating, surface treatment coating of crushed stone and gravel placer deposits, preparing grounds for laying slabs of prefabricated concrete slabs. The operations included in the processes of certain types of work performed grader (grader), are connected in series and are repeated in each section of highway under construction: digging, hoeing, forming a prism drawing, earth moving and material distribution, leveling (Planning), profiling, coating the road surface and verges. Foundation subgrade preparation, development of seizures, the construction of embankments, finishing in the final layout of the surface subgrade and slopes, roadside produce a set of planning road building machines, which necessarily includes grader. Works on pavement coatings perform well with motor graders. Technological process operations grader blade (grader) consists of successive passes, which is in cutting the soil, its transverse and longitudinal displacement, trim (planning) treated area of the road. Depending on the type of road construction works, processes and operations grader performs them one of the models of work equipment: dozer, bulldozer, ripper.
Construction of embankment finish trim the bottom of slopes and planning reserve. The inner and outer slopes of the reserve up to 1 m trim grader with otkosnika installed on the heap. At the same time carry out one or two longitudinal passage grader (grader). Cut the bottom level a soil reserve or move to the mound. Slopes up to 0.6 m plan auto grader blade set at the desired angle. When cutting the inner slope cell blade is installed with an angle of 30-40 and seizure shall be made right so that the protruding end was flush with the outside of the right wheel of front axle. First pass the front wheels pass over the snow, rear – on the bottom cut out the ditch.
On subsequent passes grader (grader), right front and rear wheels should move along the bottom of the ditch and the front wheel should have a vertical position. Lateral movement of soil produce a shift in the ground roll, cut out of the ditch, and when dealing with road-building material laid in the pavement surface. For this operation, set the blade angle to capture 40-50 , the wheel the front axle should be tilted angle gm 3-5 in the direction of displacement, road-building material. If you are not convinced, visit patrick dwyer merrill lynch. Finishing and final layout of the base and cover the pavement at an angle produces satiety capture of 90 . Recently time, due to the optimal price-quality ratio, the increasing use of motor graders are in Russia (graders) in China. With all the variety of Chinese manufacturers a good choice concern is the production of XCMG. This product meets all international quality standards, so technology XCMG is widespread in almost all continents of the world.