1. Home
  2. TRID
  3. View Record
https://trb-annual-meeting.nationalacademies.org/registration

ELEVATING SCRAPERS PROVE VALUE IN HIGH-PRODUCTION JOBS

ELEVATING SCRAPERS HAVE AN HOURLY PRODUCTION CAPACIITY LESS THAN COMPARABLY RATED CONVENTIONAL SCRAPERS, BUT THEY HAVE THE EFFICIENT CHARACTERISTIC OF BEING SELF-LOADING WHICH MAKES THEM MORE ECONOMICAL IN MANY EARTH MOVING SITUATIONS. SELF-LOADING SCRAPERS ARE WORKING IN HIGHWAY CONSTRUCTION, DAM AND WATER CONTROL PROJECTS, AIRPORT CONSTRUCTION, AS WELL AS IN RESIDENTIAL AND COMMERCIAL BUIDLING SITE DEVELOPMENTS. ABOUT 4 TO 5 INCH DEPTH OF PENETRATRION IS PERFORMED BY THE CUTTING EDGE; THIS BOILS THE MATERIAL UP IN FRONT OF THE ELEVATOR FLIGHTS, AND MOVING FLIGHTS SWEEP IT INTO THE SCRAPER BOWL. THIS LOADING SWEEPING ACTION REQUIRES FAR LESS HORSE POWER THAN PUSHING A CONVENTIONAL SCRAPER, BECAUSE THE MATERIAL ENTERING THE BOWL IS ALWAYS BEING PLACED ON TOP OF THE INCREASING LOAD. FIELD WEIGHT STUDIES OF THE CATERPILLER 32-CUBIC-YARD-CAP- ACITY ELEVATING SCRAPER DEMONSTRATE ITS ABILITY TO LOAD A WIDE RANGE OF MATERIALS. ELEVATOR SPEEDS SHOULD BE CORRELATED WITH THE LOADING CHARACTERISTICS OF THE MATERIAL. ALL LOADING SHOULD BE DONE IN FIRST-GEAR TORQUE-CONVERTER DRIVE FOR MAXIMUM RIM-PULL WITH MINIMUM WHEEL SLIPPAGE. TO ASSIST IN LOADING AND CONTAINING SAND, OTHER GRANULAR MATERIALS WITH LOWER MOISTURE BAFFLES ARE AVAILABLE WHICH CAN BE FITTED BEHIND THE ELEVATOR. THESE REDUCE LOSS OF MATERIAL OVER THE FRONT OF THE CUTTING EDGE. UTILITY APPLICATIONS FOR THE ELEVATING SCRAPER ARE FINISH GRADING, HAUL ROAD MAINTENANCE, SLOPE WORK, CLEAN-UP WORK, INTERCHANGE LANDSCAPING, REPLACING STRIPPED TOPSOIL, STRIPPING AND LOADING ASPHALT PAVEMENT AND MANY OTHER JOBS.

  • Supplemental Notes:
    • Vol 112, No 4, PP 68-70, 75, 2 TAB, 3 PHOT
  • Publication Date: 1969-4

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00219397
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 13 1970 12:00AM