دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see chain drive. chain-and-sprocket drive n: a type of drive that consists of a loop of chain that goes around two shafts with sprockets fitted on the shafts. The driving shaft provides power and the driven shaft receives power. When the sprocket on the driving shaft turns, the chain moves and turns the driven sprocket. chainand- sprocket transmission n: a selective transmission made up primarily of chain-andsprocket drives. There are three two-strand chain-and-sprocket drives and a pair of gears for reversing, located between the input shaft coming from the compound, and the output shaft on a mechanically driven drawworks. Each of these chain-and- sprocket drives has a different sprocket ratio to provide three speeds to the high-drum drive and three to the low-drum drive. Com- pare gear transmission.

n: the input shaft of rotary table power,which sited on the table body through a bearing and a sleeve.

n: the transmission shaft for the drawworks that is driven directly by the compounding transmission on a mechanicaIdrive rig and is connected to it with the master clutch;or, on an electric-drive rig, the shaft driven directly by the electric motors. The input shaft drives the jackshaft or output shaft.

n: the input shaft that drives the drawwork.

n: the rotary part with the wheel and gear can pass the power of engine by strap and gear to the input shaft.

n: the clutch that connects the compounding transmission on a mechanical- drive rig to the input shaft of the drawworks.

n: the clutch that connectes complex drive assembly with the input bshaft of drawworks in mechanical rig.

n: the transmission shaft nearest the machinery to be driven. It is driven by the input shaft driven near the power source.

n: the part that transmits the driving force coming from the input shaft to the connecting lever and drives the connecting lever motion.