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Machine for monitoring the vertical position of a contact wire of an overhead line

  • US 5,161,312 A
  • Filed: 09/23/1991
  • Issued: 11/10/1992
  • Est. Priority Date: 10/03/1990
  • Status: Expired due to Fees
First Claim
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1. A machine for monitoring the vertical position of a contact wire of an overhead line extending above a track comprising two rails having running faces defining a plane, which comprises(a) a self-propelled machine frame including a superstructure,(b) an undercarriage supporting the machine frame on the track and having wheels journaled on a wheel axle and engaging the running faces of the track rails, and(c) a frame vertically adjustably mounted on the machine frame for monitoring the vertical position of the contact wire, the monitoring frame having an upper end and a device connected to the upper monitoring frame end for measuring the vertical position of the contact wire, and a lower end below the machine frame fixed at a distance relative to the plane, such that vertical movement of said machine frame does not cause movement of the measuring device.

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