Disclosed is a base assembly for supporting a crane pedestal. The base assembly comprises four base units, each having a first end and a second end, and each base unit being of an L-shape with an outside beveled corner. Fastening devices connect each base unit at their first and second end to respective first and second ends of another of the four base units. The four base units are dimensioned so that, when connected by said fastening devices, they form an octagonal-shaped base structure. The four base units are also dimensioned to support four pads that each rest on a face of 14 each unit adjacent to its beveled corner when the four base units are assembled in the octagonal-shaped base structure. Also disclosed is a method for assembling a base assembly for supporting a crane pedestal and a fastening device for connecting the ends of two units together.

Disclosed is a base assembly for supporting a crane pedestal. The base assembly comprises four base units, each having a first end and a second end, and each base unit being of an L-shape with an outside beveled corner. Fastening devices connect each base unit at their first and second end to respective first and second ends of another of the four base units. The four base units are dimensioned so that, when connected by said fastening devices, they form an octagonal-shaped base structure. The four base units are also dimensioned to support four pads that each rest on a face of 14 each unit adjacent to its beveled corner when the four base units are assembled in the octagonal-shaped base structure. Also disclosed is a method for assembling a base assembly for supporting a crane pedestal and a fastening device for connecting the ends of two units together.

A securement for crawler cranes and system and method for use of the same are disclosed. In one embodiment of the system, a pair of structural securements are spaced at approximately a track-distance apart with respect to the crawler crane and coupled together by multiple transverse support members. When the crawler crane is driven onto the structural securements and fastened thereto, the tipping fulcrum of the crawler crane is shifted, thereby requiring a greater tipping force to tip and adding stability during high wind events.

A securement for crawler cranes and system and method for use of the same are disclosed. In one embodiment of the system, a pair of structural securements are spaced at approximately a track-distance apart with respect to the crawler crane and coupled together by multiple transverse support members. When the crawler crane is driven onto the structural securements and fastened thereto, the tipping fulcrum of the crawler crane is shifted, thereby requiring a greater tipping force to tip and adding stability during high wind events.

A portable lifting arm includes a base, a plurality of casters fixed to a bottom side of the base, an arm mounting structure extending upward from a top side of the base, and an arm. The arm includes a first arm segment having a first end and a second end, the first end of the first arm segment being attached to the arm mounting structure, a second arm segment having a first end and second end, the first end of the second arm segment rotationally connected to the second end of the first arm segment, and a power tool rotationally connected to the second end of the second arm segment. A controller in electrical communication the power tool selects between predetermined settings on the power tool based on a position of the first arm segment and the second arm segment relative to the arm mounting structure.

The invention relates to a tower crane with a crane tower and a jib mounted thereon as well as a counter-jib, wherein the length of the counter-jib is defined by the number of the counterweights received.

The invention relates to a tower crane with a crane tower and a jib mounted thereon as well as a counter-jib, wherein the length of the counter-jib is defined by the number of the counterweights received.

A public works vehicle has a base, moving means supporting the base, brackets joined to the frame of the base, a lifting system suitable for lifting a counterweight. The lifting system has a first arm hinged to the frame, at least one thrust actuator connected to the frame and to the first arm to move the first arm, a second arm slidingly mounted with respect to the first arm, a lifting actuator connected to the first arm and to the second arm to move the second arm, a connection system connected to the second arm and to the counterweight.

A public works vehicle has a base, moving means supporting the base, brackets joined to the frame of the base, a lifting system suitable for lifting a counterweight. The lifting system has a first arm hinged to the frame, at least one thrust actuator connected to the frame and to the first arm to move the first arm, a second arm slidingly mounted with respect to the first arm, a lifting actuator connected to the first arm and to the second arm to move the second arm, a connection system connected to the second arm and to the counterweight.

Disclosed is a base assembly for supporting a crane pedestal. The base assembly comprises four base units, each having a first end and a second end, and each base unit being of an L-shape with an outside beveled corner. Fastening devices connect each base unit at their first and second end to respective first and second ends of another of the four base units. The four base units are dimensioned so that, when connected by said fastening devices, they form an octagonal-shaped base structure. The four base units are also dimensioned to support four pads that each rest on a face of 14each unit adjacent to its beveled corner when the four base units are assembled in the octagonal-shaped base structure. Also disclosed is a method for assembling a base assembly for supporting a crane pedestal and a fastening device for connecting the ends of two units together.