Bakhodir Khakimov’s research while affiliated with Tashkent Institute of Irrigation and Agricultural Mechanization Engineers and other places

Research and development activities aimed at the development of new scientific and technical bases of resource-saving technologies and mixed fuel preparation devices, which implement the use of alternative fuels to save traditional fuels, are being carried out. On the basis of theoretical and experimental studies, the initial requirements and technical conditions of the device for heating the bioethanol mixture to the diesel fuel and the engine supply system was tested. The fuel mixture prepared by heating the recommended diesel fuel and bioethanol proportioned mixture was tested on the TTZ 80.10 tractor. The tests showed that the specified injection angle of the UTN-5 fuel pump was advanced by 2 degrees, and the injector needle pressure was determined to be 1.4-1.6 MPa.

The article discusses a method for planting seeds in stony soil and a device for its implementation. It has been established that the quality of seed placement in the soil significantly depends on the quality of formation of the earthy soil layer at a depth of seed placement. A method is proposed for planting seeds in stony soil, which includes cutting off the upper layer of stony soil with its simultaneous separation, formation of stony and fine-grained layers from it and laying them alternately on top of each other, forming grooves, laying seeds on its bottom and falling asleep seeds with soil. In contrast, the depth of cut of the upper layer of stony soil is taken equal to the sum of the depth of seeding and the maximum size of stones. To implement the method, a proposed device includes a frame, a ploughshare mounted on it, and a separating grid made of several parallel wire elements, sowing machines, disc coulters, and fenders. The economic efficiency of the proposed technical solution is associated with maintaining the period of the emergence of seedlings and, accordingly, increasing the yield of crops, as well as increasing the productivity of sowing machines.

The article summarizes the characteristics of the use of labor resources in agriculture by the head of the farm, determining the level of use of resources, efficient use of labor resources, shortening the seasonal working period of labor resources in agriculture, creating an employment environment, prospects for the use of labor resources in agriculture, organization of small enterprises for the industrial surplus production of agricultural products, organization of storage rooms for agricultural products, indicators reflecting the general state of labor productivity are presented. , as well as conclusions on the effective use of labor productivity and comparison of the economic potential of farmers and peasants, conclusions on the main factor of the production process, reproduction of the labor force regardless of the ownership of the economy in agricultural production.

The work in the field of oil obsolescence, theoretical identification of active additives contained in the oil as a benchmark for evaluating the main operational properties of oil, as well as a theoretical assessment of the properties of oil oxidation resistance and the resource of its active elements, depending on the intensity of the eating of engine details and the amount of elements. The sharply changing climate and high pollination conditions of the republic, a sharp increase in the amount of water and mechanical mixtures, which in turn can lead to a premature departure of motor oils used in it, such as viscosity, corrosion resistance, oxidation resistance, washing and other properties, and acceleration of engine eating. Due to the overload of the tractor, theoretically determined that mechanical mixtures and asphalt products containing oxidation products containing motor oil in the engine maintenance system increased by 1.2%.

Existing plows do not provide high-quality tillage between rows of orchards and vineyards. The purpose of the study is to develop and justify the parameters of the plow for cultivating the soil between rows of gardens to tractors of class 0.9 kN. A design scheme of a single-body plow for smooth, rowless plowing of garden aisles has been developed. The proposed plow consists of a movable and fixed frame, a disc knife, a screw body with a hostage. The research uses the laws of agricultural mechanics, mathematical statistics, and methods of strain measurement. The technology of cultivating the soil between rows of gardens with a single-body plow for smooth plowing is justified. To implement the proposed technology, the position of the plow body changes relative to the tractor during operation. It is established that when equipping a plow with a movable and fixed frame and performing a body width of 45-52. 5 cm, the required plowing quality is achieved with the lowest energy consumption.

The study aims to substantiate the parameters and operating mode of the oil purification device from oxidation products to improve the efficiency of the use of lubricants. The methods of mathematical analysis and mathematical statistics, comparative comparison, generalization, and testing methods of agricultural machinery are used in the research process. It is established that engine oils are intensively polluted by oxidation products during processing, thereby accelerating the friction process due to the overload of tractor engines. During the performance of agricultural work in the oil composition, the content of oxidation products in the form of carbon, carbon dioxide, and asphalt products increases by 1.2%. Analytical coupling dependences for the process of cleaning motor oils from oxidizing products are obtained, and the dependence of the cleaning efficiency on the device parameters is established. The developed device consists of a container for collecting oils, a steam generator, a container for a sump mixer, a separate container for pure and sedimentary oils, and a vessel for re-collecting acetone. An installation has been developed to implement the technology of collecting and renewing oils in the conditions of the farm. In this case, the amount of contamination and the composition of oils is determined, and the operating mode of the device is selected for their resumption.