Аннотация:
У матеріалах статті дана оцінка
енргонавантаженості самовентильованих дисків при циклічному та
тривалому режимах випробовувань дисково-колодкових гальм
транспортних засобів. Крім того встановлено вплив конструктивних
параметрів удосконалених гальмівних дисків на ефективність
вимушеного повітряного охолодження, а також охарактеризовано
перший та другий етапам дослідження самовентильованих дисків. In the materials of the article the estimation of energy load
of self-ventilated disks at cyclic and long modes of tests of disk and pad
brakes of vehicles is given. In addition, the influence of design parameters
of advanced brake discs on the efficiency of forced air cooling is
established, and the first and second stages of the study of self-ventilated
discs are characterized. The substantiation of the choice of design
parameters of self-ventilated brake discs with cooling elements on their
friction treadmills taking into account the allowable energy load and stress
state to increase the cooling efficiency of friction pairs of disc brake pads of
trucks is carried out. The relationship between the design parameters of the
cooling elements, ie grooves and vents made on the treadmills of friction of
self-ventilated brake discs with the average cross section of their ventilation
duct, as well as the intake hole with the lower cross section of the
ventilation duct, and the relationship with the lower from the top to ensure
efficient operation of the entire ventilation system.
In continuous and self-ventilated brake discs of disc-pad brakes of
vehicles there are ratios of geometrical parameters. But at the same time for
self-ventilated brake discs, in which the ribs are placed between the semidiscs. The latter form channels that are washed by oncoming air currents
when the vehicle is moving. Unfortunately, it is still unknown how to
construct the "stuffing" of a self-ventilated disk. Thus, it is necessary to
establish the relationship between the design parameters of the cooling
elements, ie grooves and vents made on the treadmills of self-ventilated
brake discs with the middle cross section of their ventilation duct, and the
intake hole with the lower cross section of the ventilation duct, and the
relationship with the lower the upper section of the ventilation duct to
ensure efficient operation of the entire ventilation system.
