Apparatuses and methods for erecting drilling structures including drill floors and drilling masts include attaching a rigging line to the drilling structure and to a strand jack arranged with at least one hydraulic jack and a plurality of clamps that alternatingly secure onto the rigging line and pull the rigging line in tension. Pulling the rigging line with the strand jack raises the drilling structures to an upright or elevated position.

Disclosed herein is an adaptor for connecting a new post structure for supporting an electrical device to an existing post structure for supporting an electrical device, the adaptor comprising one or more first engaging features arranged, in use, to engage with at least part of the existing post structure, and one or more second engaging features arranged, in use, to engage with at least part of the new post structure. Also disclosed is a connection structure for forming part of a post structure for supporting an electrical device. In addition, a lamp unit forming part of a street lamp is disclosed.

An improved system and method for bracing, transporting, assembling, and disassembly of drilling equipment at oil and gas land-based well sites. The system has a substructure with side boxes support bracing that are in a scissor jack (or grand plié) style bracing with telescoping tension link(s), linking pins, and vertical hydraulic cylinders. These linking pins are set after raising the substructure and secure the telescoping tension link, support arms, and support bracing in place to maintain the integrity of the substructure. Alternatively the system has a substructure with side boxes support bracing that are in a scissor jack (or grand plié) style bracing with screw jacks and a means of stabilization during substructure raising. The substructure bracing reduces the overall length, reduces the upper and lower box spans, and balances the raising loads, subsequently lowering the transport weight of the side box such that a commercial walking system may be integrated into the side box and remain there during transport while maximizing the operating drill floor height while minimizing the transport height.

A drilling rig mobility system moves a drilling rig or similar structure in an oilfield or similar environment and includes independently controllable positioning shoes attaching to the drilling rig and controllable through separate and coordinated position control commands. Each positioning shoe may be individually addressed to reposition the drilling rig. Each positioning shoe includes a hydraulic actuator and wireless control circuitry. The hydraulic actuator provides vertical and horizontal force in response to wireless control signals for wireless position and control data and instructions with a remote wireless communications device. A cylinder stomper vertically elevates the hydraulic actuator and receives and transfers the vertical force. A foot assembly transfers the horizontal force from the hydraulic actuator. A positioning shoe cylinder stomper and positioning shoe traverse cylinder provide infinitely variable position control. Rotational positioning may be manually or automatically achieved.

Disclosed is a tower lifting device for a rotary blasthole drill, comprising a hydraulic cylinder (5), an extending oil path (7), a retracting oil path (6), a speed control oil path (14) and a proximity switch (3), wherein the extending oil path (7) is connected to a non-rod-end chamber of the hydraulic cylinder (5), and an extension control unit is provided on the extending oil path (7); the retracting oil path (6) is connected to a rod-end chamber of the hydraulic cylinder (5), and a retraction control unit is provided on the retracting oil path (6); the speed control oil path (14) is connected to the retracting oil path (6), the speed control oil path (14) is connected to a speed control valve block (15) in series and the tail end thereof is connected to an oil tank (16); the proximity switch (3) is arranged on a tower supporting frame (2) for controlling the switching on and off of the speed control valve block (15), and when the tower (4) is approximately in a horizontal state, the speed control valve block (15) is on. By using such a tower lifting device in the present invention, the speed at which the tower is laid down to a horizontal state can be conveniently controlled.

Provided is a tool arrangement for unloading a tower or a tower segment from a transportation vehicle and/or for storing the tower or the tower segment, including a bottom tool device with an attachment to removably attach the bottom tool device to a bottom mounting section of the tower or the tower segment, wherein the tool arrangement further includes a top tool device with an attachment to removably attach the top tool device to a top mounting section of the tower or the tower segment, wherein the bottom tool device and the top tool device each include a lift to lift the tower or the tower segment, when the tower or the tower segment is in a non-erected position and attached to the respective tool device.

A utility pole is resistant to breakage by providing a connection between an upper and a lower portion. In many embodiments, the upper portion with an arm supporting a utility line is able to deflect relative to a lower portion at the connection and then either be replaced or restored to the upright configuration.

Provided is a tool arrangement for pivoting a tower or a tower segment from a non-erected position to an erected position, including a bottom tool device with a first device section with an attachment to removably attach the first device section to a bottom mounting section, and with a second device section adapted to be arranged on the ground and being attachable or attached to the first device section, wherein the bottom tool device includes a pivot axis at least when the first and the second device sections are attached to each other, wherein the tower or the tower segment, when fixed to the bottom tool device, is pivotable around the pivot axis when being erected, wherein, when the tower or the tower segment is fixed to the bottom tool device, the pivot axis is perpendicular to the longitudinal axis of the tower or the tower segment.

A drilling rig system includes a drilling rig that includes a mast, a pair of hydraulic pistons coupled to a pair of front legs of the mast and configured to apply a first force to the mast, the first force acting in a direction opposing a force generated by a weight of the mast, a plurality of raising lines coupled to a crown block of the mast and to a pair of rear legs of the mast opposite the front legs and configured to apply a second force to the mast, the second force acting in a direction opposing the force generated by the weight of the mast, and a drawworks assembly coupled to the plurality of raising lines and configured to apply a force acting away from the crown block of the mast to at least one of the plurality of raising lines to generate the second force.

Hoists, platforms and davits are described as well as methods of securing same to telecommunication and other towers. The hoists, platforms and davits may be secured to the towers on a temporary basis using clamps. The clamps may include brackets and cables. The cables may be attached to the brackets, may wrap around the outer surface/perimeter of the tower pole/leg and may use tension to keep the bracket in place.