A folding lifting device for automobile, comprising outer housing, lifting supporting plate, folding assembly and synchronous cushioning assembly. Outer housing comprises housing bottom, lifting supporting plate is provided in outer housing, and folding assembly is provided between lower side of lifting supporting plate and upper side of housing bottom; folding assembly is composed of two groups of same side V-shaped folding elements, and synchronous cushioning assembly is provided between lower sides of two groups of side V-shaped folding elements. Each of two groups of side V-shaped folding elements comprises front upper folding bar, front lower folding bar, rear upper folding bar and rear lower folding bar; first synchronous rack is fixedly provided at rear side of front lower folding bar, second synchronous rack is fixedly provided at the front side of the rear lower folding bar.

A lift device includes a base, an arm, a tractive element, and a steering actuator. The arm has a base end coupled to the base and a tractive element end. The arm includes a steering actuator interface positioned along an exterior surface of the arm. The tractive element is coupled to the tractive element end. The steering actuator has a first end coupled to the steering actuator interface and an opposing second end coupled to the tractive element. The arm includes a plate extending from the exterior surface of the arm at an upward angle and past the steering actuator.

Provided is a system and method for positioning a load including an apparatus having a plurality of columns. Each column has a first support and a motor adapted to move the first support along an axis of the column. A second support is connected to at least two of the first supports and a track member for receiving a portion of a vehicle is connected to the second support. Load and position sensors are coupled to the apparatus for transmitting load and position signals. A controller is in communication with the columns and receives the load and position signals to compare the load and position signals to generate at least one control signal that is sent to at least one of said motors for controlling the position of at least one of said first supports.

Provided is a system and method for positioning a load including an apparatus having a plurality of columns. Each column has a first support and a motor adapted to move the first support along an axis of the column. A second support is connected to at least two of the first supports and a track member for receiving a portion of a vehicle is connected to the second support. Load and position sensors are coupled to the apparatus for transmitting load and position signals. A controller is in communication with the columns and receives the load and position signals to compare the load and position signals to generate at least one control signal that is sent to at least one of said motors for controlling the position of at least one of said first supports.

A support installation includes support members for supporting an electric cable, a tower crane, a mast and a jib linked to an upper portion of the mast. The jib and the mast respectively extend according to a jib direction and a substantially vertical mast direction. The support members are secured to the jib and disposed at a plurality of locations distant according to the jib direction. The support members extend transversally to the jib direction to protrude laterally from the jib. The jib is cantilevered when the support installation is in the service configuration.

A support installation includes support members for supporting an electric cable, a tower crane, a mast and a jib linked to an upper portion of the mast. The jib and the mast respectively extend according to a jib direction and a substantially vertical mast direction. The support members are secured to the jib and disposed at a plurality of locations distant according to the jib direction. The support members extend transversally to the jib direction to protrude laterally from the jib. The jib is cantilevered when the support installation is in the service configuration.

A work vehicle for maintenance of an electrical catenary includes a vehicle frame supported on on-track undercarriages and a vehicle superstructure situated on the vehicle frame. A first grounding device is disposed at a first vehicle end relative to a longitudinal direction of the vehicle. A crane having a vertically and transversely adjustable work platform is disposed at an opposite, second vehicle end. A second grounding device is provided at the second vehicle end.

An aerial platform for an industrial truck has a one-piece base frame comprising a vertical mast strut configured to couple to the industrial truck and a floor plate configured as a place for at least one person to stand. The aerial platform further comprises at least two vertical posts defining an access opening and at least two horizontal side struts coupled the vertical mast strut and the at least two vertical posts.

An aerial platform for an industrial truck has a one-piece base frame comprising a vertical mast strut configured to couple to the industrial truck and a floor plate configured as a place for at least one person to stand. The aerial platform further comprises at least two vertical posts defining an access opening and at least two horizontal side struts coupled the vertical mast strut and the at least two vertical posts.

A heavy load elevator installation platform capable of stretching and retracting steplessly, which includes an upper beam assembly and a lower beam assembly that can realize stepless stretching and retracting. The upper beam assembly includes an upper beam left C steel, upper beam middle C steel, and upper beam right C steel connected end to end in sequence. A plurality of long holes formed at an inclined included angle with the horizontal are formed in the inner side walls of each of the upper beam left C steel and the upper beam right C steel. A plurality of long holes are respectively formed in the two side surfaces, facing the upper beam left C steel and the upper beam right C steel, of the upper beam middle C steel. The structure of the lower beam assembly is the same as that of the upper beam assembly.