Travelling gantry or portal crane - has travel motors controlled by detector to correct running out of true

Pont roulant

  • Inventors:
  • Assignees: Vevey Atel Const Mec
  • Publication Date: February 11, 1977
  • Publication Number: FR-2318098-A1

Abstract

The crane has bogies at both ends of a horizontal track. At least one wheel in each bogie is mechanically coupled to a remote-controlled motor, causing the gantry or portal to travel along the track. There is a detector on the gantry operated if it runs out of true at either end. A control signal proportional to the amount of deviation is sent to one or both motors, producing a correction to reduce this deviation. There can a component monitoring the position of each end of the gantry on the track, and generating a signal dependant on this position. These two signals are combined to form a signal dependant on the deviation at both ends.

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    EP-0365750-A2May 02, 1990Zinser Textilmaschinen GmbHConveying apparatus, especially for transporting lap rolls to combing machines
    EP-0365750-A3November 14, 1990Zinser Textilmaschinen GmbHConveying apparatus, especially for transporting lap rolls to combing machines
    FR-2648448-A1December 21, 1990Geoffroy GabrielSquaring device for a rolling handling beam