Development of the information model of the soil cutting process spatially oriented knife of dynamic action

Abstract

The results of the construction of an information model of the process of soil cutting with straight-furrow oriented knives of dynamic action are given. Bulldozer equipment and its main tasks are considered. A working hypothesis of the movement of the scraper and the vertically oriented knife has been formed. The working hypothesis is based on the fact that the movement of the spatially oriented knife will be carried out longitudinally - translationally, perpendicular to the trajectory of the movement of the working body. The dynamic movement of the knife will be carried out with the help of a self-oscillating hydraulic vibrator, the development of such a solution was implemented at the Department of Construction Machinery of KNUСA, the prerequisites were the work of the team, in particular, prof. Smirnov V.M. regarding the structure of the working body and prof. Baladinsky V.M. regarding the regularities of creating dynamic movements of cutting elements of earth-moving machines. And also, based on the works of Khmara L.A., candidate in connection with the intensification of the mechanization of earthworks in construction. Their vector movement and determination of the angles of application of the main cutting force to the corresponding angle α are presented. After constructing the movement vectors of the working body and the spatially oriented knife, a method of calculating the direction of the cutting force and the deflection angle α was developed. Using vector sums and speed ratios ranging from 10:1, where the spatially oriented knife moves ten times faster than the blade, to 1:10, where the spatially oriented knife moves ten times slower. A graph of the determination of the angle α is plotted depending on the ratio of the blade feeding speeds and the displacement of the spatially oriented knife. The speed ratio is calculated and entered in the speed ratio table according to the angle α and the bulldozer's gear ratio.

Keywords

• oblique cutting
• spatially oriented
• excavator blade
• vector
• speed ratio