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 N.sub.c given by the equation N.sub.c=Function (K, Θ, W.sub.ND, W.sub.SW) 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, W.sub.ND is a nominal weight of the antigalloping device without the individual weights of the variable weight portion, and W.sub.SW is a weight of a single individual weight, the chosen number of individual weights for providing the antigalloping device with a total weight W.sub.T for applying the desired torsional twist angle Θ on the cable.

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 N.sub.c given by the equation N.sub.c=Function (K, Θ, W.sub.ND, W.sub.SW) 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, W.sub.ND is a nominal weight of the antigalloping device without the individual weights of the variable weight portion, and W.sub.SW is a weight of a single individual weight, the chosen number of individual weights for providing the antigalloping device with a total weight W.sub.T for applying the desired torsional twist angle Θ on the cable.

A method and system for installing Stockbridge dampers on wires, such as power lines and guy wires, is described. The method and system include the use of a robotic Stockbridge damper installer onto the wires where the robotic installer is configured to place Stockbridge dampers on the wire as the robotic installer travels along the wire.

A method and system for installing Stockbridge dampers on wires, such as power lines and guy wires, is described. The method and system include the use of a robotic Stockbridge damper installer onto the wires where the robotic installer is configured to place Stockbridge dampers on the wire as the robotic installer travels along the wire.

One or more devices and associated methods for in situ performance of work on a line that is suspended are provided. A device includes a saddle portion to receive the line therein. The device includes a motive portion that engages the line and moves the device along the line. The device includes an operation portion that includes a mechanism operating to perform a work task at a location along the line.

An installation fixture for installing a device on a power line is disclosed. The fixture includes a lower cradle that may receive one part of the device, an upper cradle that may receive another part of the device, and a base. The installation fixture may be installed on a worker carrier for a boom truck or the like. The orientation of the lower cradle may be adjusted relative to the base to facilitate the installation on the power line. The upper cradle may be moved between an open position (where the parts may be loaded into the fixture) and a closed position (where the power line is captured between the two parts of the device) and at which time that parts can be secured together.

Provided is a cable twist allowance system for a wind turbine system. The system includes a sun gear disposed within a tower of wind turbine, a pivot disk connected with the sun gear, a plurality of lever members, each including a plurality of cables and spaced a predetermined distance apart from each other, the plurality of level members being pivotably connected with a surface of the pivot disk and rotatable about the sun gear; and a plurality of compression members, each compression member corresponding to each lever member and adjusting a position of a respective lever member based on a radial force applied to the plurality of cables of the respective lever member.

An asymmetric Stockbridge damper including a clamp and two weights of unequal mass connected to the damper. The damper may further include one or two messenger strands connecting the weights to the clamp. The weights may be situated so that they are an unequal distance from the clamp. The damper may further include a base connected to the clamp, and the weights may be connected to the base. The weights may be bell-shaped. The weights may have smooth contours. The clamp may use a breakaway bolt. The clamp may be designed for high temperature conductor applications. The messenger strands may be made of a 19-strand cable. The messenger strands may be attached to end of the weights and flushed to those ends.

An asymmetric Stockbridge damper including a clamp and two weights of unequal mass connected to the damper. The damper may further include one or two messenger strands connecting the weights to the clamp. The weights may be situated so that they are an unequal distance from the clamp. The damper may further include a base connected to the clamp, and the weights may be connected to the base. The weights may be bell-shaped. The weights may have smooth contours. The clamp may use a breakaway bolt. The clamp may be designed for high temperature conductor applications. The messenger strands may be made of a 19-strand cable. The messenger strands may be attached to end of the weights and flushed to those ends.

A vibration damper for reducing a vibration in a cable is provided. The vibration damper includes an attachment portion that is attached to the cable. The vibration damper includes a flexible leg portion attached to the attachment portion. The vibration damper includes a weighted portion attached to the flexible leg portion. The weighted portion is spaced a distance apart from the attachment portion.