NGAKES THE OPERATION OF THE LINK OF THE POWER TAKE-OFF SHAFT OF THE TRACTOR HTZ-150K-09

Abstract

One of the effective directions on the problem of assessing the technical reliability of tractors supplied to agriculture is the study of the initial performance characteristics and wear of individual elements and components of the tractor. (Research purpose) The research purpose is considering the operation of the intermediate support as part of the cardan drive of the power take-off shaft of the tractor HTZ-150K-09; determining the loads on its bearings and the operation mode of the support and its resource. (Materials and methods) When transmitting torque in the power take-off mechanism, axial and radial forces arise, causing reactions in the intermediate support bearings. The equilibrium equations of the system of forces in space were used to determine their values. (Results and discussion) The dynamics of the driveshaft is such that when the tractor moves over an uneven field or when it turns, the rotation speed of the driven shaft does not coincide with the speed of the drive. This is due to the constant change in the angle between the shafts. The variable rotation speed of the driven shaft causes angular accelerations and inertial loads of elements in the cardan transmission itself and in other parts of the drive and the working bodies of agricultural machines. The loads on the bearings of the intermediate support from the side of the cardan transmission will have a dynamic character, since they reach the maximum and minimum twice in one revolution of the support shaft. (Conclusions) To increase the resource of the power take-off cardan drive link, it is necessary to carry out maintenance in a timely manner, while using additional damping elements.