ЗНИЖЕННЯ ЕНЕРГОНАВАНТАЖЕНОСТІ ФРИКЦІЙНИХ ВУЗЛІВ КОЛОДКОВИХ ГАЛЬМ БУРОВИХ ЛЕБІДОК

To increase the heat transfer coefficient from metallic and non-metallic elements of the frictionof band-block brakes we can use a developed heat exchange surface. However, the naturalcooling of the friction pairs of band-block brakes of draw-works is not able to provide the temperature regime below the allowable temperature for friction pads materials during the descentof the drill string in the well. So we have to use additional devices under the work surface offrictional interaction. We’ve raised the question of forced cooling of the working surface of the rim of the pulley ofband-block brakes by using "heat pipes". The features elements of friction components andmethods for reducing their energyloading have been considered. We’ve described the work andthe effect of "heat pipes" and its consequence in the friction units of braking devices. We’veshown and described two designs of band-block brake device and system of forced cooling ofthe working surface of the rim of the pulley.Objective of this article is development of cameras under working surface of rim of pulleyworking on the effect of "heat pipes" to reduce energyloading of friction pairs of band-blockbrakes.