Patent ID: 9586482
Date: 2017-03-07
CPC Classifications: B60L,B66C

Claim:
1. An advancing unit for positioning of a current collector unit of a vehicle on a current track arrangement, the advancing unit comprising an extension moveable in an advancing direction and guided in a fastening unit on the vehicle to be moveable linearly, wherein the extension has a cavity, which is open on a longitudinal side extending in the advancing direction and having an inner surface forming a contact surface for guide elements situated on the fastening unit, wherein a flexible band is located on the extension, with one section of the band at least partially covering the open longitudinal side of the cavity along a first section of the extension protruding from the fastening unit, and a second section of the band being located in a reservoir, wherein a first end of the band is connected with the fastening unit or with an end of the extension, and wherein a second end of the band is supported under tension in the longitudinal direction on a tensioning device, such that a movement of the extension which decreases the section of the extension protruding from the fastening unit pulls the band into the reservoir by the same length and at the same velocity as the movement of the extension and such that a movement of the extension which increases the section of the extension protruding from the fastening unit releases the band from the reservoir by the same length and at the same velocity as the movement of the extension.