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Automatic drive control system for a bulldozer

  • US 5,462,122 A
  • Filed: 06/24/1994
  • Issued: 10/31/1995
  • Est. Priority Date: 07/08/1993
  • Status: Expired due to Term
First Claim
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1. An automatic drive control system for a bulldozer which is capable of automatically driving a bulldozer such that the bulldozer moves back and forth predetermined times between a digging start position and a digging end position, the automatic drive control system comprising:

  • (a) digging start detecting means for detecting that the bulldozer is in the digging start position;

    (b) digging end detecting means for detecting that the bulldozer is in the digging end position;

    (c) driving direction detecting means for detecting the momentarily varying driving direction of the bulldozer; and

    (d) drive controlling means for shifting a transmission into a forward gear when the digging start detecting means detects that the bulldozer is presently in the digging start position;

    shifting the transmission into a reverse gear when the digging end detecting means detects that the bulldozer is presently in the digging end position; and

    controlling the bulldozer such that the driving direction detected by the driving direction detecting means is made coincident with a target driving direction when the bulldozer is moving from the digging start position towards the digging end position.

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