What is a capstan pulley?
capstan, mechanical device used chiefly on board ships or in shipyards for moving heavy weights by means of ropes, cables, or chains. Capstans also have been used in railroad yards for spotting (positioning) freight cars.
What is the capstan effect?
A holding capstan is a ratchet device that can turn only in one direction; once a load is pulled into place in that direction, it can be held with a much smaller force. A powered capstan, also called a winch, rotates so that the applied tension is multiplied by the friction between rope and capstan.
How do you use capstan equation?
The equation is as follows: T1= T0eμ. Where T1 is the output tension and T0 is the input tension, or pretension, μ is the coefficient of friction and θ is the contact (wrap) angle in radians.
What is a capstan hand?
capstan in American English 1. an apparatus, mainly on ships, around which cables or hawsers are wound for hoisting anchors, lifting weights, etc.: it consists of an upright, spool-shaped cylinder that is turned on an inner shafting by machinery or by hand.
What is a capstan drive?
Capstan drives employ dual cables wrapped in a figure-eight shape around the input (sheave) and the output (pulley). These drives offer low inertia, zero backlash, and high stiffness [6], [7]— all of which are advantageous for high-quality impedance control.
What is a capstan lathe used for?
A capstan lathe is a milling machine used to create the same parts over and over again. The cutting bits are mounted on a rotatable turret known as a capstan, which allows the user to quickly change the orientation of the bits for cutting without having to take off the first bit and then mount the second.
What is mooring capstan?
A mooring capstan is a permanent structure used for boat or ship mooring when reaching a port or dock. It is used to get the mooring lines from the ship to the berth.
What is a capstan on a reel to reel?
Motion of the tape is controlled by the capstan. This is a steel shaft which is always turning at a constant speed. When the PLAY button is pushed, the rubber pinch roller squeezes the tape against the capstan and the tape is pulled past the heads. The TAKEUP MOTOR winds the tape onto the takeup reel as this goes on.
What is capstan machine?