CREATION OF AN INNOVATIVE MODEL BY APPLYING A DOUBLE-ROW PLANETARY GEARBOX TO THE OUTPUT SHAFT OF THE PUMPJACK

In this study, the application of a planetary gear transmission mechanism in the gearbox of a pumpjack is proposed. The main objective of the proposed approach is to reduce the overall dimensions compared to existing conventional gearboxes, while simultaneously increasing the transmission ratio, thereby improving the overall technical and technological performance of the system. Traditional pumpjack gearboxes are mainly based on cylindrical or bevel gear transmissions. To achieve high transmission ratios in such gearboxes, the use of multiple gear stages is required, which leads to an increase in the gearbox size and mass, as well as higher mechanical losses. As a result, the demand for installation space increases, and vibration and noise levels rise during operation. The application of a planetary transmission mechanism makes it possible to eliminate these disadvantages. From a structural point of view, planetary gearboxes consist of a central sun gear, planet gears, and a ring gear, which enables the transmission of torque simultaneously through multiple gear meshes. This feature ensures a uniform load distribution among the gears and significantly increases both the load-carrying capacity and the mechanical reliability of the gearbox. One of the main advantages of planetary transmissions is the ability to achieve high transmission ratios with relatively small overall dimensions. By using a single- or two-stage planetary system, it is possible to obtain the same or even higher transmission ratios compared to traditional multi-stage cylindrical gearboxes. This allows the size of the pumpjack gearbox to be reduced, its weight to be lowered, and material consumption to be minimized. The reduction in overall dimensions also has a positive impact on the overall structure of the pumpjack. A more compact gearbox reduces loads on the frame, simplifies installation and maintenance processes, and enables more accurate balancing of the unit. This factor is particularly important for continuous and stable operation in deep and low-permeability oil reservoirs. The application of a planetary gearbox in a pumpjack also ensures more efficient utilization of the torque transmitted from the electric motor to the crank mechanism. As a result of the increased transmission ratio, a high torque is achieved at a low rotational speed, allowing the rod pumping unit to operate stably under heavy loads. At the same time, the reduction of mechanical losses contributes to energy savings and a decrease in operating costs. Thus, the application of a planetary transmission mechanism in the pumpjack gearbox provides significant advantages, including reduced overall dimensions, increased transmission ratio, enhanced load-carrying capacity, and improved operational reliability. This demonstrates that pumpjacks equipped with planetary gearboxes represent a promising technical solution for improving oil production efficiency in modern oil fields, especially in low-permeability reservoirs. Keywords: planetary transmission, transmission ratio, overall dimensions, mechanical transmission systems.