The paper presents a circuit diagram of a shock-vibration mechanism for compacting mixtures of any stiffness (including extra stiff ones). Its operation principle is based on Archimedes' lever and the thrust-bar system. This mechanism was designed and assembled at the department of Wheeled and Tracked Vehicles, SUSU. The first experimental tests of the shock-vibration Кромский Е.И., Кондаков С.В., Асфандияров М.А. Перспективы развития техники для строительства автомобильных дорог…

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The basic principles of soil compaction at the device subgrade different mechanisms. Presented designs and considered the concept cone compactor road-building machinery for deep soil compaction during the construction of the roadbed. It is noted that the destruction of the pavement roads usually occurs as a result of deformations of the subgrade, in most cases related to honeycombed soil subgrade defects are often caused by violations of the construction process technology and the use of obsolete road-building equipment. Minor violations and damage to develop into dangerous strain that creates emergency situations and leads to a significant reduction and speed limits of vehicles and, consequently, to large economic losses. The basic advantages of the new compression technology with tapered compactors. Unrolling-it is a continuous process of formation of a conical-cylindrical cavity by deformation and the rolling compaction tapered working mechanism. The challenge of new technology-to create the conditions for maximum air output from the array of material being compacted. Realized with technology called us venting and existing-compressed air. To understand the soil compaction process new work equipment is considered a power balance between the force feeding and resistance forces the introduction of the cone when it is immersed. The dependences for the calculation of the total torque and driving power, which must be applied to the driven shaft to force the device to roll tapered compactor depending on the geometric parameters of a conical working body and the physical and mechanical properties of compacted soil. New consumer properties much higher sealing means of the prior art, if the thickness of the compacted soil layer into the mound with existing technology is not exceeds two feet, then the cone compactor hardly depends on the thickness (height) packed layer. After deep compaction compactor cone and fill the pits (holes) is more durable material removed subgrade subsidence due to increase density, reduce soil tendency to water saturation, i.e., several times increases its load-bearing capacity.

The article is devoted to the method of designing a cone roller for deep compaction of soil used as the working body of a crawler excavator. One of the most important design parameters of a cone roll is the angle of the cone. Known methods allow determining the cone angle for other technological tasks, for example, for loosening frozen soil, and cannot be directly applied to solve the problem. The authors propose an original method for selecting rational parameters of a cone roller head, including the angle of the cone. The method uses a mathematical model of the interaction of a cone roller with compacted soil. In the process of solving the mathematical model are the following parameters: the dependence of the area of the lateral surface of a cone, the dependence of the volume of displaced soil on the contact surface of the cone from the contact patch, the total force, cone force acting on the ground torsional, and axial force in the implementation of the cone, applied by the excavator boom. To identify the optimal value of the cone angle, the function of the volume of displaced soil from the cone angle and the axial force during penetration from the cone angle was studied. As a result, it is determined that the optimal angle of the cone is 240, which will provide the greatest efficiency according to the performance / cost criterion.