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Slope excavation controller of hydraulic shovel, target slope setting device and slope excavation forming method

  • US 6,076,029 A
  • Filed: 10/08/1998
  • Issued: 06/13/2000
  • Est. Priority Date: 02/13/1997
  • Status: Expired due to Fees
First Claim
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1. A slope excavation control system for a hydraulic excavator comprising a plurality of vertically pivotable front members making up a multi-articulated front device, and a body for supporting said front device, said slope excavation control system including excavation plane setting means for setting a target excavation plane to be formed by excavation using said front device, said front device excavating the position of the target excavation plane under area limiting excavation control with which said front device is moved along the target excavation plane when said front device comes close to the target excavation plane, wherein said excavation plane setting means comprises:

  • (a) a front reference disposed on said front device and providing a reference for aligning said front device with an external reference provided to extend in the direction of advance of a target slope face;

    (b) detecting means for detecting status variables in relation to a position and posture of said front device;

    (c) first calculating means for calculating the position and posture of said front device on the basis of said body. from signals of said detecting means;

    (d) first setting means for setting a positional relationship between said external reference and the target slope face;

    (e) an external reference setting switch operated when said front reference is aligned with said external reference;

    (f) second calculating means for calculating a positional relationship between said body and said external reference based on information about the position and posture of said front device calculated by said first calculating means when said external reference setting switch is operated, and calculating a positional relationship between said body and the target slope face from the positional relationship between said body and said external reference and the positional relationship between said external reference and the target slope face set by said first setting means; and

    (g) second setting means for setting the target slope face as a positional relationship on the basis of said body from the positional relationship between said body and the target slope face calculated by said second calculating means, and defining the set target slope face as said target excavation plane.

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