What is the capstan theory?
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.
What is θ in the equation t2 t1 e ΜΘ?
The Euler-Eytelwein equation(1) relates the tension of the two ends of the rope: T2 = T1 eμθ, where T2 is the tension in the rope due to the load it’s supporting, T1 is the tension necessary to hold the load without slipping, μ is the coefficient of friction between the rope and the pipe, and θ is the total angle ( …
What is in the equation t2 t1 E?
Explanation: For solving of the unknown tension in the belts, T2 = T1eµB equation is used. In this, the R.H.S tension is the maximum tension of the two tensions. And the µ is coefficient of friction between the belt and the surface. And the B is the angle of belt to the surface in radians.
How do capstans work?
A capstan consists of a drum, driven either manually or by steam or electricity, that rotates about a vertical axis to wind in a line (rope, cable, or chain) that has been wrapped around it (see illustration). Speed of drawing in the load can be controlled by allowing partial slippage of the line around the capstan.
What is wedge friction?
Friction- Part 2: A wedge is in general a triangular object which is placed between two objects to either hold them in place or is used to move one relative to the other. The direction of the friction force on each surface will oppose the slipping.
What is Beeta in the equation t2 t1eμb?
Angle of the belt to surface contact in radians.
How can I tell if my wedge is self locking?
If the value of the force P needed to remove the wedge is positive, then the wedge is self-locking, i.e., it will not come out on its own. However, if the value of P is negative, or zero, then the wedge will come out on its own unless a force is applied to keep the wedge in place.
What does the word capstan mean?
Definition of capstan 1 : a machine for moving or raising heavy weights that consists of a vertical drum which can be rotated and around which cable is turned. 2 : a rotating shaft that drives tape at a constant speed in a recorder.
What does capistan mean?
English Language Learners Definition of capstan : a machine that turns so that rope or a cable can wind around it and move or lift heavy weights (such as a ship’s anchor)