Electricity: transmission to vehicles – Conductors – Trolley
Patent
1996-12-19
1998-03-24
Morano, S. Joseph
Electricity: transmission to vehicles
Conductors
Trolley
B60M 120
Patent
active
057302650
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a device for hanging an electric conductor from a carrying cable. The invention refers more specifically to such a device which is known as a dropper making it possible to produce an articulated mechanical and electrical link between a conductor such as especially the contact wire of an overhead line for electric traction and its carrying cable. It is known that in such a system the dropper supports the contact wire and also provides the electrical continuity between the carrying cable and this contact wire.
2. Summary of the Prior Art
Droppers allowing such a mechanical and electrical link to be achieved are already known, but these known droppers are not entirely satisfactory especially as regards the methods of securing the dropper cable to the clamping systems employed to hold the dropper between the carrying cable and the contact wire. These known systems especially have the drawback of leading to the formation of electric arcs at the various linking members.
SUMMARY OF THE INVENTION
The present invention proposes to provide a dropper which makes it possible to avoid the formation of electric arcs and to dispense with the electric distribution assemblies, the dropper simultaneously fulfilling an articulated mechanical function of supporting the contact wire, and an electrical-supply function.
As a consequence, the invention provides a dropper providing the articulated mechanical and electrical link between a carrying cable and a conductor, more particularly the contact wire of an overhead line for electric traction, in which dropper the dropper cable provides the electrical continuity between the carrying cable and the contact wire, this dropper being characterized in that the connection between its cable and the clamps for connection respectively to the carrying cable and to the contact wire is achieved by means of terminators in which the ends of the dropper cable are crimped, and in that the said connection clamps are produced in two removable parts which snap-fasten together to clamp the carrying cable and the contact wire respectively.
According to a first embodiment of the present invention, the dropper cable is continuous: it directly connects the connection clamps to which its respective ends are crimped, intermediate eye stiffeners, also crimped to the dropper cable at points chosen as a function of the length of the dropper coming into engagement in said connection clamps in order to form with the dropper cable loops of adjustable lengths which additionally allow the length of the dropper to be adapted to preestablished drop values.
According to a second embodiment of the present invention, the dropper cable is discontinuous: its two ends are respectively crimped on terminators secured to eye stiffeners which engage in the connection clamps, and conductors, the ends of which are respectively crimped on the said clamps and on the said eye stiffeners providing the electrical link via the dropper cable, between the carrying cable and the contact wire.
According to a preferred embodiment, each of the connection clamps consists of two similar elements which snap-fasten together, each of the said elements including a base and a hook element which is provided on its internal face with a profiled plane surface which upon snap-fastening interacts with the corresponding surface of the similar hook element provided on the second element of the clamp, so as to constitute an eye in which the eye stiffener crimped on the dropper cable becomes engaged, the respective lower parts of the two clamp elements delimiting a groove in which the contact wire or the carrying cable becomes engaged when the two elements are snap-fastened, thus clamping the contact wire or the carrying cable in the corresponding clamp, without having to resort to an independent mounting means, especially clamping using nuts and bolts.
Further features and advantages of the present invention will emerge from the description given hereafter with re
REFERENCES:
patent: 2304763 (1942-12-01), Matthes
patent: 5421068 (1995-06-01), Menechella
de Faucamberge Philippe
Lemaire Eric
Neige Guy
Thiard Jean-Claude
Morano S. Joseph
The Whitaker Corporation
LandOfFree
Device for suspending an electrical conductor from a carrying ca does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for suspending an electrical conductor from a carrying ca, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for suspending an electrical conductor from a carrying ca will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2282793