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Method and apparatus for controlling angles of working machine

  • US 6,246,939 B1
  • Filed: 09/23/1999
  • Issued: 06/12/2001
  • Est. Priority Date: 09/25/1998
  • Status: Expired due to Fees
First Claim
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1. A method for controlling angles of a working machine of a front-end loader having a working machine including a boom (3) attached to the front portion of a vehicle body to be ascendable and descendable, and a bucket (4) attached to the front end portion of said boom (3) to be vertically rotatable, comprising the steps of:

  • previously storing an automatic excavation mode expressing predetermined relationship of a bucket angle to a boom angle in excavation;

    during excavation, after manually setting said boom (3) and said bucket (4) at an automatic excavation starting position, starting an automatic excavation, and controlling the ascent of said boom (3) and the tilt of said bucket (4) based on the relationship between the boom angle and the bucket angle in said stored automatic excavation mode to thereby control each angle.

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