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Crash prevention system for a storage and retrieval machine

  • US 9,415,983 B2
  • Filed: 10/31/2013
  • Issued: 08/16/2016
  • Est. Priority Date: 12/17/2012
  • Status: Active Grant
First Claim
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1. A crash prevention system for operative engagement with a vehicle for storage and retrieval comprising:

  • a crane mast extending vertically from the vehicle;

    a first motor in operative engagement with a first rotating shaft;

    a second motor in operative engagement with a second rotating shaft;

    a first sensor apparatus engaged to the first rotating shaft for rotating the first sensor apparatus, the first sensor apparatus comprising;

    a first transmitter for transmitting at least one laser beam; and

    a first receiver for receiving a first reflected laser beam; and

    a second sensor apparatus engaged to the second rotating shaft for rotating the second sensor apparatus, the second sensor apparatus comprising;

    a second transmitter for transmitting at least one laser beam; and

    a second receiver for receiving a second reflected laser beam,wherein the vehicle has a longitudinal axis, wherein the first and second sensor apparatuses are in parallel orientation relative to the longitudinal axis of the vehicle, and wherein detection of either the first or second reflected laser beams generates a fault condition that terminates movement of the vehicle;

    wherein the fault condition that terminates the movement of the vehicle can be created when an object is detected in a path of the vehicle by the first reflected laser beam or the second reflected laser beam;

    wherein the first sensor apparatus and the second sensor apparatus extend horizontally from opposing lateral sides of the crane mast and the first rotating shaft and the second rotating shaft rotate in a vertical direction,wherein the first sensor apparatus and the second sensor apparatus are oriented a distance from the crane mast.

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