About the strategy for further development of the Republic of Uzbekistan 3.2. The section considers the implementation of an active investment policy aimed at modernization, technical and technological updating of production, implementation of industrial, transport, communication and social infrastructure projects, further modernization and diversification of industry by transferring it to a qualitatively new level, aimed at accelerating the development of high-tech manufacturing industries, primarily for the production of finished products with high added value based on deep processing Local raw material resources. The object of research is a road-building machine with the proposed mechanism for driving excavation equipment. The article presents the results of a power, durable calculation of the components and parts of a hydraulic drive, the required kinematic power parameters are established taking into account external forces. In solving the tasks, methods of numerical calculation are applied. The developed mechanical model of a single-bucket excavator with hydraulic drive, consisting of links, which are absolutely rigid structures, characterized by masses of links mi; impart by moments of inertia Jix, Jiy, Jiz relative to the axes of their own local coordinate systems; coordinates of the centers of mass of links in local coordinate systems. Modeling a proportional hydraulic drive of a single-bucket excavator is a two-stage process, which is associated with the development of a basic design hydraulic circuit of a single-bucket excavator (Fig. 2).