AUTOMATED CONTROL FOR SHIP UNLOADERS

Automation of clamshell ship unloaders has made possible efficient operation of high capacity unloaders by less highly skilled operators. Successful automation requires the design of an operating cycle specifically tailored for an automated grab bucket unloader. An efficient operating cycle is dependent upon the swing of the bucket and the relative positions of the digging and clearance points. By utilizing the bucket swing instead of trying to eliminate it, it is possible to achieve the most efficient cycle of operation. This cycle of operation can be produced on an automated unloader by the use of a system of limit switches. The determination of the positions of these limit switches requires a dynamic analysis which is made practical by the use of the computer.

• Supplemental Notes:
  • Prepared for meeting 19-21 September 1973.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Oyler, J F
  • Withrow, M F
• Publication Date: 0

Media Info

• Features: References;
• Pagination: 7 p.

Subject/Index Terms

• TRT Terms: Automatic control; Bulk cargo handling; Bulk cargo terminals; Cargo handling; Cargo handling equipment; Loading and unloading; Marine terminals; Switches (Electricity)
• Old TRIS Terms: Automatic control systems; Bulk unloading systems; Electric switches
• Subject Areas: Freight Transportation; Marine Transportation; Terminals and Facilities;

Filing Info

• Accession Number: 00051104
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: 73-MH-2 Paper
• Files: TRIS
• Created Date: Feb 28 1974 12:00AM