Кафедра "Автомобіле- і тракторобудування"

Постійне посилання колекціїhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/5257

Офіційний сайт кафедри https://web.kpi.kharkov.ua/ait/

Кафедра "Автомобіле- і тракторобудування" (первісна назва – кафедра "Тракторобудування") створена разом із Харківським тракторним заводом у 1930 році у складі новоствореного автотракторного факультету (пізніше – факультет транспортного машинобудування). Засновником кафедри "Автомобіле- і тракторобудування" був академік, доктор технічних наук, професор Медведєв Михайло Іванович, який очолював кафедру з 1930 по 1962г.

У 1972 році на базі кафедри "Автомобіле- і тракторобудування" було створено спеціальну кафедру "Колісні і гусеничні машини" для підготовки спеціалістів з танкобудування.

Кафедра "Автомобіле- і тракторобудування" за роки її існування внесла гідний внесок у становлення і розвиток наукової думки в області теорії автомобілів і тракторів.

Кафедра входить до складу Навчально-наукового інституту механічної інженерії і транспорту.

У складі науково-педагогічного колективу кафедри працюють 3 доктори технічних наук, 8 кандидатів технічних наук, 1 співробітник має звання професора, 7 – звання доцента.

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2020 - 20213

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Автор: search.filters.author.Ostroverkh, O. O.Містить файли: Так

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  • Ескіз
    Документ
    Static study of the most loaded elements of the differential "ELocker" when it is locked
    (ISMA University of Applied Sciences, 2021) Ostroverkh, O. O.
    Currently, the world has created a large number of programs and software packages that implement the finite element method (FEM). It is the most common method of solving a wide range of scientific and engineering problems. This is due to the simplicity of the concepts of FEM, its inherent logic and efficiency of application. SOLIDWORKS, namely its COSMOS Works Designer module, has been selected as a software package for design and research. The developed and researched model became a rotary plate of a differential with lock "ELocker". The conducted researches allowed to determine the characteristic stress concentrators on the working surface of the rotary plate. According to the results of the calculation, the maximum displacement and deformation equivalent, as well as the minimum strength factor were determined. The temperature regime of loading does not cause fears.
  • Ескіз
    Документ
    Determination of inductances for pulsating current traction motor
    (РС Tесhnology сеntеr, 2021) Goolak, S. O.; Tkachenko, V. P.; Sapronova, S. Yu.; Spivak, A. N.; Riabov, Ye. S.; Ostroverkh, O. O.
    The object of research is a pulsating current traction motor. To improve the accuracy of its mathematical model, it is necessary to use the values of the parameters that are determined in experimental studies of the electric motor. In particular, it is important to use in the model of the electric motor inductance obtained experimentally. A method is proposed for calculating the inductance of the armature winding, main poles, additional poles and compensation winding and the total inductance of the traction motor armature circuit. The calculations are based on the results of the indirect inductance measurement method, in which the electrical values of various modes of power supply of the electric motor windings are directly measured, and the inductances are determined by auxiliary calculations. The inductances of the traction motor armature circuit have a non-linear dependence on the current flowing through them. The main difference of the study is that the measurements of the electrical parameters required for calculating the inductance are carried out over the entire range of operating currents of the windings. The essence of the proposed technique is to measure the active power in the armature winding, the winding of the main and additional poles, and the compensation winding, as well as in the armature circle as a whole when they are supplied with alternating current. According to the obtained values of active power losses and phase displacement, the corresponding reactive power losses are determined, with the help of which the inductances of the motor windings are calculated. Approbation of the methodology for calculating the conduction inductance for an electric motor of a pulsating current NB-418K6 (country of origin Russia), is used on electric locomotives of the VL80T and VL80k series (country of origin Russia). A scheme for measuring electrical parameters necessary for calculating inductance is proposed. The graphical dependences of the inductance on the armature current, built on the basis of calculations, confirmed the hypothesis about the nonlinear dependence of these inductances on the armature current. For further application of the results obtained in the simulation of the operation of the traction electric motor NB-418K6, a polynomial approximation of the total inductance of the armature circuit was performed.
  • Ескіз
    Документ
    Investigation of dynamic loading of tractors with volumetric hydraulic drive
    (Видавничий дім "Гельветика", 2020) Mandryka, Volodymyr Rostyslavovych; Krasnokutskyi, Volodymyr Mykolaiovych; Ostroverkh, O. O.
    The processes that occur in the transmissions of tractor units and self-propelled agricultural machines under various modes of movement and in the process of regulation are characterized by complex dependencies that are studied analytically or experimentally. Various methods are known for obtaining mathematical models. One of them is the classical direct description method. Another is the use of passive and active methods of regression analysis. It is rational to use both methods, the combination of which makes it possible to obtain the necessary mathematical model. Volumetric hydraulic drive (OGP) is increasingly used in transmissions of modern tractors and self-propelled agricultural machines. The presented article discusses the mathematical description of axial piston hydraulic machines. A study of transient processes was carried out and their assessment was carried out to determine the loads arising in the transmission of the machine with a stepwise change in the load, the gear ratio of the OGP and constant fuel supply when the unit is accelerated from a standstill. The unit acceleration mode was studied while driving on plowing and during transport operations for the following parameters and such initial conditions: rotation speed of the hydraulic motor shaft and engine shaft; torque on the motor shaft; hook load; pressure in the OGP pressure line. The dynamic characteristics of hydraulic machines, fluid leaks and its elastic properties, as well as variable values of the hydraulic drive efficiency are taken into account. The simulation results are compared with experimental studies. The objects of research were: a model of a caterpillar tractor T-150E with independent full-flow OGP of the left and right sides; mock-up of a wheeled r oot harvester with independent OGP sides of the rear driving wheels. Depending on the operating modes with unsteady motion, the following control options are possible, providing high performance at a certain level of dynamic loads, or minimum dynamic loads when the time factor is not prevalent. Optimal control is also promising when additional parameters are included in the goal function.