RESEARCH IN SELF-BOOSTING DISC BRAKES FOR HEAVY VEHICLES

Tretsiak D.V., the Belarusian National Technical University, Minsk, the Republik of Belarus

Development of the analytical and practical scientific decisions is considered in the paper to increase the efficiency of automotive brake systems due to reduction of hysteresis losses and creation of perspective disk brake designs with self-boosting. The modification of disc brake design with self-boosting is proposed for heavy vehicles. The simulation models of the conventional disc brake and brake with self-boosting are developed using MSC.ADAMS software and virtual simulation of these models is carried out.

automotive brake systems, self-boosting, heavy vehicles, virtual simulation

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THE ULTRASOUND METHODS OF DISTANCE MEASUREMENT FOR WORKING EQUIPMENT CONTROL SYSTEM OF MOBILE MACHINES

Strock E.Y., the Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, the Republic of Belarus

Belchik L.D., the Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, the Republic of Belarus

Nikiforov V.G., OJSC “Research Institute “Elpa”, Moscow, the Russian Federation

Zinchenko V.N., OJSC “Research Institute “Elpa”, Moscow, the Russian Federation

Development of plough control system using ultrasound equipment of distance measurement is presented. The experimental results confirm the efficiency of tractor performance with contactless sensor of soil profile copying.

plough control system, ultrasound, distance measurement, contactless sensor

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ESTIMATION OF PARAMETERS OF RELIABILITY OF LATERAL FRAMES AND OVER SPRING BEAMS OF CARRIAGES OF FREIGHT CARS

Senko V.I., D.Sc. in eng., the Belarusian State University of Transport, Gomel, the Republik of Belarus

Pastuhov I.F., Ph.D. in eng., the Belarusian State University of Transport, Gomel, the Republik of Belarus

Pastuhov M.I., Ph.D. in eng., the Belarusian State University of Transport, Gomel, the Republik of Belarus

Questions of an estimation tensely-deformed conditions of lateral frames of carriages such as ZNII-X3 and models 18-100 of freight cars are considered. It is shown, that destruction of frames from normalized operational loadings is improbable. Destruction of them is possible only in extreme conditions when in operation there are critical loadings, and deterioration an aperture of axle box achieves a limiting condition at which a skew of wheel pairs causes additional growth of pressure in dangerous sections and when in zones of high pressure of frames foundry defects get. Therefore processes of destruction of lateral frames casual also arise suddenly from an adverse combination of the specified factors. On materials of statistical distribution of damages of lateral frames and over spring beams probabilities of non-failure operation of details which testify are found, that at service life in 35 years reliability of details is sufficient and makes P (t = 35) = 0,9976.

estimation tensely-deformed conditions, lateral frames, operational loadings, wheel pairs, pressure

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TRIBOTECHNICAL CHARACTERISTICS AND LONGEVITY OF TOOTHED BELT DRIVES

Bakhanovich A.G., the Belarusian National Technical University, Minsk, the Republic of Belarus

Sinkevich J.V., the Belarusian National Technical University, Minsk, the Republic of Belarus

Bakhanovich I.G., the Belarusian National Technical University, Minsk, the Republic of Belarus

Yankovski I.N., the Belarusian National Technical University, Minsk, the Republic of Belarus

Lebedev V.J., the Institute of Physical-Engineering Sciences, Minsk, the Republic of Belarus

The major factors defining longevity of a toothed belt drive are established. Results computer certainly-element simulation of the is intense-deformed condition of toothed belt linkage depending on tribological performances of elements of transmission are resulted. Experimentally methods of lowering of abrasion in contact of toothed are approved.

toothed belt drive, certainly-element simulation, intense-deformed condition, tribological

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