THE ASSESSMENT OF ENERGYLOADING OF THE FRICTION UNITS OF THE BAND-BLOCK BRAKES OF DRAW-WORKS
Journal Title: Проблеми тертя та зношування - Year 2016, Vol 73, Issue
Abstract
The modern practice of designing of friction units in brakes building industry no longer satisfies the thermal calculations of stationary processes. We need to solve problems related to the dynamics of temperature fields which relate to the work surface and the thickness of the rim of the brake pulley of the band-block brake. This is connected with large surface gradients of pulley rim, and as a result, with thermal stresses, which considerably exceeding permissible values. Content of this article are devoted to the parametric synthesis of friction units of band-block brakes of draw-works, based on their energyloading and considering with nanotribological processes, phenomena and effects occurring in the surface and near-surface layers of friction pairs. We’ve consider the following questions: problems of unsteady heat transfer with different boundary conditions applied to the friction units of the brake; assessment of the energy levels of surface and near-surface layers of friction units; the heat balance of friction units of band-block brakes; parametric synthesis of the friction unit of the brake based on their energyloading.
Authors and Affiliations
V. S. SKRYPNYK
Keywords
Related Articles
- EP ID EP191896
- DOI -
- Views 33
- Downloads 0
FORCED COOLING OF THE FRICTION UNITS: «HEAT PUMP» EFFECT
A variety of types of brake devices used in the drives of hoisting and transport machines, road and construction machines, vehicles and in other branches of engineering. Friction pairs of brake devices significantly diff...
OPTIMIZATION OF THE MAIN PARAMETERS IN DESIGN OF DOUBLE STAGE SPUR GEARS SPEED REDUCERS
The dependence of the choice of the basic parameters of a two-stage cylindrical gearbox exe-cuted according to the expanded scheme from the optimal distribution of transmission num-bers of high-speed and slow-moving stag...
ENERGYLOADING OF VARIOUS TYPES OF DISCS IN BRAKE DEVICES OF LIFTING AND TRANSPORTING MACHINES (PART TWO)
The accident-free and safe operation of lifting and transporting machines largely depends on the reliable operation of the friction pairs of brake devices. The experience of operating has showed that the wear-friction ch...
RESEARCH OF TRIBOTECHNICAL CHARACTERISTICS OF HIGH-SPEED STEEL Р6М5 WITH THE COMBINED COATING
The influence of integrated laser treatment and ion-plasma coating on the tribotechnical char-acteristics of high-speed steel R6M5 under conditions of slip friction without lubrication and abrasive wear has been establis...
MATHEMATICAL MODEL OF WEAR CHARACTER FAILURE IN AIRCRAFT OPERATION
In this paper the mathematical model of failures associated with wear during aircraft exploitation is developed. Тhe calculations of the distribution function, distribution density and failure rate gamma distribution at...