Mechanics of Cutting and Boring. Part 8: Dynamics and Energetics of Continuous Belt Machines

The report deals with forces and power requirements for cutting machines of the belt type, as exemplified by large chain saws and ladder trenchers. The forces of single cutting tools are considered, and related to the overall forces on a cutter bar. Forces are related to power, and sources of loss a...

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Bibliographic Details
Main Author: Mellor,Malcolm
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1978
Subjects:
Snow
Ice and Permafrost
Construction Equipment
Materials & Supplies
Machinery and Tools
*CUTTING TOOLS
LOADS(FORCES)
ROCK
ICE
TRACTION
BALANCE
DRIVES
POWER
BELTS
EXCAVATION
DRILLING
CUTTING
EARTH HANDLING EQUIPMENT
PERMAFROST
SELF PROPELLED
SAWS
TRENCHING
*Continuous belt machines
Chain saws
Ladder trenchers
Boring machines
Cutter bars
PE62719A
WU004
AST42
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA055247
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA055247
Description
Summary:The report deals with forces and power requirements for cutting machines of the belt type, as exemplified by large chain saws and ladder trenchers. The forces of single cutting tools are considered, and related to the overall forces on a cutter bar. Forces are related to power, and sources of loss are identified. Tractive thrust and normal reaction are analyzed and used to assess the traction, weight and balance factors for self-propelled machines. Specific energy consumption and performance index are treated, and concepts of power density and apparent belt pressure are introduced. Requirements for acceleration of cuttings are assessed, and the report concludes with a set of worked examples. (Author) See also Part 6, AD-A045 127.

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