Claims
- 1. A method of continuously laying an overhead line comprised of two elongated flexible elements extending above a track and attaching the overhead line to pylons spaced alongside the track, one of the two elongated flexible elements being a catenary cable and the other elongated flexible element being a contact wire, which comprises the steps of
- (a) propelling a machine carrying respective storage drums for the catenary cable and the contact wire along the track,
- (b) unreeling the catenary cable and the contact wire from respective storage drums while the machine is propelled along the track,
- (c) subjecting the unreeled catenary cable and contact wire to a controlled tension force while they are wound about a guiding and tensioning device mounted on the machine,
- (d) supporting and guiding the unreeled, tensioned catenary cable and contact wire by respective support and guide pulleys vertically and laterally adjustably mounted on the machine,
- (e) vertically and laterally adjusting the pulleys to maintain the tensioned catenary cable and contact wire at a corresponding vertical and lateral position adjacent a respective one of the pylons at one side of the track,
- (f) attaching the overhead line to the respective pylon whereby the catenary cable and the contact wire are fixed in said position,
- (g) subsequently laterally adjusting the support and guide pulleys to position them adjacent a succeeding one of the pylons at the opposite side of the track while maintaining the supporting and guide pulleys at a constant vertical adjustment and propelling the machine along the track whereby the overhead line assumes a zig-zag path between succeeding pylons, and the catenary cable and contact wire are centered along said path, and
- (h) affixing hangers between the catenary cable and the contact wire of the attached overhead line in a trailing operation immediately following the attachment operation to maintain the catenary cable and the contact wire at the desired vertical position.
Priority Claims (1)
Number |
Date |
Country |
Kind |
88890258 |
Oct 1988 |
GBX |
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Parent Case Info
This is a divisional of copending application(s) Ser. No. 07/420,159 filed on Oct. 10, 1989 now U.S. Pat. No. 5,048,797.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3244292 |
Elliott |
Apr 1966 |
|
4213596 |
Inoue et al. |
Jul 1980 |
|
4728079 |
Nitta et al. |
Mar 1988 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
526889 |
May 1929 |
DE2 |
2211247 |
Mar 1972 |
DEX |
Non-Patent Literature Citations (1)
Entry |
"Japanese Railway Engineering", pp. 23-25, vol. 9, 68 (Catenary Inspection Car . . . ). |
Divisions (1)
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Number |
Date |
Country |
Parent |
420159 |
Oct 1989 |
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