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Method and equipment for automatic guidance of earthmoving machines and especially machines for laying drainage elements

  • US 4,677,555 A
  • Filed: 11/20/1984
  • Issued: 06/30/1987
  • Est. Priority Date: 11/28/1983
  • Status: Expired due to Fees
First Claim
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1. Method for automatic guidance of an earthmoving machine in accordance with predetermined planimetric and altimetric data profiles, said method comprising the following steps:

  • disposing on the ground fixed beaconing elements (9) and a rotary laser beam emitter for defining a predetermined reference plane;

    disposing on the earthmoving machine (11) a first device (M2) of the planimetric guidance of the machine and a second device (M3) for the altimetric guidance of an earthmoving tool (13) carried by said machine, said first device (M2) controlling a steering system of the machine (11) and said second device (M3) controlling the vertical position of the tool (13); and

    further disposing on the machine (11) a control module (M1) for transmitting previously stored planimetric and altimetric specifications for the work to be performed on the ground so as to control through said first device (M2) the direction of the travel of the machine (11) and to control through said second device (M3) the vertical position of the tool (13) with respect to said fixed locating beacons and to said plane defined by said rotating laser beam, respectively.

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