A pulling grip assembly and methods, systems, and apparatuses for constructing the pulling grip assembly are disclosed. The pulling grip assembly can include a pulling grip. The pulling grip can include an elongated body portion and a lug portion. The lug portion can include a blind hole for receiving an assembly including a hollow fastening member and a pulling cable retained within the hollow fastening member.

A cable puller and associated methods are shown. Useful example methods include pipe bursting using cable pullers as shown. Cable pullers and methods shown provide a mechanical advantage that increases an amount of cable pulled in one cycle. Selected examples are shown that include a pulley located on a distal end of a moving portion of an extending and contracting beam. The pulley and the mechanical advantage it supplies helps to improve the efficiency of the cable puller and reduce manufacturing cost of the cable puller.

Embodiments and methods relate to pulling and installing a product line along an underground arcuate path beneath an obstacle, including pulling the product line for an extended length (i.e. a length that might otherwise be deemed impracticable) along the underground arcuate path beneath the obstacle. Embodiments also relate to a pulling apparatus for installing a product line using a casing along an underground arcuate path beneath an obstacle, having a casing pull head connected to the casing, a product line pull head assembly connected to the product line, and a pull bracket connected to the product line pull head assembly and to the casing pull head sleeve frame.

A foundation interface device for pulling a cable (16) that is arranged in a conduit into a structure. The interface device has a flexible, generally cylindrical pull-in member (12) that is connected to the conduit. At the leading end of the pull-in member is a weak link latch having releasable arms (72) connected to the pull-in member and connection piece (66) connected to the cable. At the rear of the pull in member is a slidable sleeve operably connected to extendable teeth (40). The slidable sleeve has an abutment (36) that contacts an opening of the structure when the interface device is pulled into the opening, causing the sleeve to slide rearward at thus extending the teeth to lock the interface device in the opening.

A cable securing device facilitates secure connection to a cabling end, and employs a retaining cap, a barrel and a cable receiving component. Embodiments of the cable receiving component include a retaining jaw, a spacer gland and a fastening ring maintained within an interior cavity of the barrel. In various embodiments, the cable receiving component is retained in a substantially axially static position within the barrel upon insertion of a cable.

A method for capturing a tensile force exerted during the pulling of a pipe or line during installation, includes capturing a strain on the pipe or line via one or more sensors arranged on the pipe or line. Multiple strain sensors may be arranged such that they are offset at various angles across the circumference of the element being installed. One or more sensors may be mounted to a towing head for pulling the pipe or the line during installation.

A pull-in head for a high voltage cable provided with a multi-wire conductor having an end portion which is stepped and tapering, with a layer-by-layer exposure of the wires in the direction towards the end face of the multi-wire conductor, wherein the pull-in head includes: a conductor clamp assembly having a plurality of clamping segments, wherein each clamping segment has an axial first central channel configured to receive the multi-wire conductor, wherein at least some of the clamping segments have mutually differing central channel width and central channel depth dimensions, the clamping segments being configured to be arranged one after the other in an order with a decreasing central channel width and central channel depth dimension, the central channel width and central channel depth dimensions being adapted to the tapering stepped configuration of the multi-wire conductor, whereby the first central channels together form a multi-wire conductor channel which is tapering in an axial direction, and wherein each clamping segment is configured to provide individual clamping of the multi-wire conductor, and a hollow lifting head configured to receive the conductor clamp assembly, wherein the conductor clamp assembly includes a support structure, wherein the clamping segments are configured to be assembled with the support structure to thereby clamp the multi-wire conductor between the clamping segments and the support structure.

The present invention relates to a power transmission underground cable winding device and a power transmission underground cable spreading system comprising same and, more specifically, to: a power transmission underground cable winding device for installing a power transmission three-phase underground cable in an underground power tunnel or conduit; and a power transmission underground cable spreading system comprising same.

The present invention relates to a wire gripper to aid in wire pulling and method of use, A gripper is inserted into an interior cavity. A base comprises an interior cavity and a threaded attachment. The gripper comprises more than one flexible finger. A wire receptacle is formed between the flexible fingers. The gripper slides into the interior cavity of the base. A collar is open at both the top and bottom end. A wire passes through the top end of the collar and slides into the wire receptacle. The wire is retained within the wire receptacle by fastening the base to the collar causing the flexible finger to apply retaining pressure to the wire preventing the wire from being removed from the wire grabber. A pulling tension is applied by an installer person to the wire grabber to pull the wire from a starting location to a destination location.

A cable puller and associated methods are shown. Useful example methods include pipe bursting using cable pullers as shown. Cable pullers and methods shown provide a mechanical advantage that increases an amount of cable pulled in one cycle. Selected examples are shown that include a pulley located on a distal end of a moving portion of an extending and contracting beam. The pulley and the mechanical advantage it supplies helps to improve the efficiency of the cable puller and reduce manufacturing cost of the cable puller.