A low-profile catenary hanger, catenary wire system, and a method for supporting an electrical contact wire in relation to a messenger wire wherein a wire clamping assembly clamps about the contact wire, and a wire corral assembly is fixed to the clamping assembly. The corral assembly defines an adjustable reception corral through which the messenger wire is received without fastening so that the contact wire can rise without a consequent lifting of the messenger wire. The clamping assembly has a first clamping member with a keystone-shaped projection and a second clamping member with a keystone-shaped slot that can slidably receive the keystone-shaped projection to fix the clamping members together by operation of a setscrew. The clamping members together define a wire reception volume, and each clamping member has an engaging tooth whereby a contact wire with opposed longitudinal grooves can be clamped and retained by the clamping assembly.

The present invention provides an improved catenary wire system for an overhead line equipment (OLE) installation. Known OLE installations are prone to sagging and hence require a large number of support structures, which are expensive to install and maintain. These structures also appear “cluttered” and ungainly. The catenary wire system of the present invention comprises a fibre reinforced composite catenary wire configured to suspend a contact wire; and at least one elongate electrically conductive element arranged generally parallel with the catenary wire. It has been found that the catenary wire system of the present invention is able to withstand increased tensions when compared to known OLE installations, which reduces the amount of catenary wire sag, and can thereby reduce the number of support structures required by an OLE installation.

In one or more embodiments, techniques are provided for modeling overhead line structures of electric railways that utilize a flexible, reusable structure template to automatically generate a 3D model of the overhead line structure. Each structure template includes a set of points that represent joints of the overhead line structure and components that represent elements of the overhead line structure. A feature definition of each joint and component includes properties, constraints and cell mappings. By mapping key points of reference lines for an overhead line structure to key points in an applicable structure templet for the overhead line structure, and applying the constraints and, in some cases the cell mappings, a 3D model of the overhead line structure is automatically generated. The 3D model may be a “low detail” stick representation for fast modeling, or, using the cell mappings, a “high detail” cell-based representation for very realistic modeling.

In one or more embodiments, techniques are provided for modeling overhead line structures of electric railways that utilize a flexible, reusable structure template to automatically generate a 3D model of the overhead line structure. Each structure template includes a set of points that represent joints of the overhead line structure and components that represent elements of the overhead line structure. A feature definition of each joint and component includes properties, constraints and cell mappings. By mapping key points of reference lines for an overhead line structure to key points in an applicable structure templet for the overhead line structure, and applying the constraints and, in some cases the cell mappings, a 3D model of the overhead line structure is automatically generated. The 3D model may be a “low detail” stick representation for fast modeling, or, using the cell mappings, a “high detail” cell-based representation for very realistic modeling.

A method including measuring a distance between two successive supporting poles delimiting a section to be realized, inputting data into a computer programmed to output a layout plan indicating a position and a length for each dropper to install, preparing each dropper with a dedicated machine, moving a first platform along the section, which is equipped with a position unit and a marking device to set a mark on the contact wire at each position where a dropper is to installed, moving a second platform along the section, the second platform being loaded with the droppers that have been prepared, and fixing manually each dropper between the messenger wire and the contact wire in registration with a corresponding mark set on the contact wire.

A method including measuring a distance between two successive supporting poles delimiting a section to be realized, inputting data into a computer programmed to output a layout plan indicating a position and a length for each dropper to install, preparing each dropper with a dedicated machine, moving a first platform along the section, which is equipped with a position unit and a marking device to set a mark on the contact wire at each position where a dropper is to installed, moving a second platform along the section, the second platform being loaded with the droppers that have been prepared, and fixing manually each dropper between the messenger wire and the contact wire in registration with a corresponding mark set on the contact wire.

A cable clamp for clamping drop cables to main span cables. The cable clamp has a frame, a jaw assembly and a stem. The frame has a main body, a drop cable body and a main cable body. The jaw assembly is operatively coupled to the main body and has a drop cable jaw and a main cable jaw. The drop cable jaw is movable along the main body between an open position and a closed position. The main cable jaw is movable along the main body between an open position and a closed position. The main cable jaw can be automatically moved from the open position to the closed position. The stem is operatively coupled to the main body and the jaw assembly so that the stem can selectively block the main cable jaw in the open position and release the main cable jaw so that can automatically move to the closed position.

A cable clamp for clamping drop cables to main span cables. The cable clamp has a frame, a jaw assembly and a stem. The frame has a main body, a drop cable body and a main cable body. The jaw assembly is operatively coupled to the main body and has a drop cable jaw and a main cable jaw. The drop cable jaw is movable along the main body between an open position and a closed position. The main cable jaw is movable along the main body between an open position and a closed position. The main cable jaw can be automatically moved from the open position to the closed position. The stem is operatively coupled to the main body and the jaw assembly so that the stem can selectively block the main cable jaw in the open position and release the main cable jaw so that can automatically move to the closed position.

An electrified road transport system includes a contact line system having a plurality of masts with support cables and contact wires suspended thereon. The contact line system has structural modifications for reducing the horizontal and/or vertical positional tolerances of the contact wires. In the context of the structural modifications, section separators are fastened directly to masts or to cantilevers of the masts, skewed overhead lines are disposed in straight section segments and/or in curves, and the support cables and/or contact wires have smaller cross-sections and/or higher longitudinal tensile forces. A method for stabilizing a contact line system of an electrified road transport system is also provided.

A method including measuring a distance between two successive supporting poles delimiting a section to be realized, inputting data into a computer programmed to output a layout plan indicating a position and a length for each dropper to install, preparing each dropper with a dedicated machine, moving a first platform along the section, which is equipped with a position unit and a marking device to set a mark on the contact wire at each position where a dropper is to installed, moving a second platform along the section, the second platform being loaded with the droppers that have been prepared, and fixing manually each dropper between the messenger wire and the contact wire in registration with a corresponding mark set on the contact wire.