Investigation of Wear of Cutting Part of Polygonal Knife Car Graders in Different Ground Conditions

Abstract

The wear of cutting elements of auto graders allowed in practice causes an increase in the cutting force by 3 to 4 times, the energy intensity of the cutting process by 1.4 to 3 times, the cost of soil development by 8 to 15 % with a decrease in productivity by 10 to 30 %. This increases the stress state of the entire machine and reduces its operational reliability. Excessive wear of cutting elements leads to economic inexpediency or practical impossibility of further operation of machines. The above-mentioned areas of research on the productive use of machines, the identification and creation of promising structures of working bodies have determined the task of further increasing the efficiency of auto graders based on improving the working elements taking into account their wear resistance.

Automated Road Milling Cutter for Repair of the Road Surfaces with Variable Trackage

“…During the milling, the relative position of the axis of rotation of the milling cutter changes relative to the chassis of the road milling cutter and, accordingly, the road surface, vertical corrective movement is carried out [11][12][13]. The distance from the cutting line to the axis of rotation of the cutter will be called the level of dimensional adjustment, i.e.…”

Justification of the Cam Roller Parameters for Destruction of the Road Coatings for Obtaining the Lumpy Asphalt Scrap

“…The destruction of old asphalt concrete pavements that have lost their operational qualities is still regarded as the simplest technological operation. Destruction is carried out with the help of traditional road machines -medium and heavy type motor graders with scarifies, bulldozers with rippers on tractors weighing 10 tons or more, as well as special hydraulic hammers or concrete breakers of hydraulic or pneumatic action [15][16].…”

Interaction of the TE33a Diesel Locomotive and the Railway Track on Curved Section with Radius 290 m

“…Each wheel pair corresponds to an individual brake unit with a cylinder and shoes, the operating parameters of the unit are automatically adjusted. Such a system is the most efficient and easy to operate and repair [5][6].…”