Twister slider antigalloping device

Abstract

The present invention can provide a twisting antigalloping device for securing to a span of a cable for torsionally twisting the cable, and includes a grip or clamp portion having a grip or clamp axis for gripping or clamping to the cable along the clamp axis. A variable weight portion can be connected to the clamp portion and extend along a variable weight axis offset from the clamp axis. The variable weight portion can include an elongate member with a plurality of individual weights secured on the elongate member. The number of individual weights in the variable weight portion can be a whole number chosen to approximate a calculated value for the number of individual weights Ngiven by the equation N=Function (K, Θ, WND, WSW) where K is an estimated mid-span stiffness of the span of the cable, Θ is a desired torsional twist angle to be applied to the cable, WND is a nominal weight of the antigalloping device without the individual weights of the variable weight portion, and Wsw is a weight of a single individual weight, the chosen number of individual weights for providing the antigalloping device with a total weight WT for applying the desired torsional twist angle Θ on the cable.