Expert Columns: Page 19

Read the latest from our collection of expert columnists and contributors.
Expert Columns
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Construction
How Many Drums?
Historical Construction Equipment Association (HCEA)
A few static rollers are still produced and used today, but their work has been mostly taken over by vibratory drum compactors.
Given the pronounced upward tilt of the frame to the front drum, this very rare Rumely Oil Pull three-wheel roller is probably a conversion of a traction engine. It was the featured machine at the Historical Construction Equipment Association’s 2017 International Convention and Old Equipment Exposition in Carthage, NC, and is owned by show host Ken Eder.
Clamps, Clips, Fasteners
Compact Tractor Deck Fastener Redesign Solves Joint Failure
A component manufacturer helps its OEM customer redesign a fastener to eliminate warranty claims due to a failing joint.
Optimas Solutions helped redesign a fastener for use in an OEM customers' compact tractor to eliminate warranty claims from a failing joint.
Actuators
Smart Actuators Drive a New Generation of Harvesters
Thomson Industries Inc.
Use of smart electromechanical actuators with onboard electronics delivered the reliability, force capability and control features necessary for a new combine harvester design.
The Tribine Harvester.
Expert Columns
Guidelines for Expert Columnists
Interested in submitting an article to OEM Off-Highway? Follow these guidelines to have your piece considered for publication on oemoffhighway.com or in an upcoming e-newsletter.
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Trends
How Compaction was Mechanized
Historical Construction Equipment Association (HCEA)
The advent of mechanization and demand for improved road surfaces led to the development of the steam roller in the 1870s.
This Galion Iron Works International roller is equipped with an underframe blade and rear scarifier for road repair. It also illustrates a common engineering practice from the 1920s in which industrial tractors (in this case a McCormick-Deering 10-20) were used as the powertrains for an amazing variety of machines.
Operator Comfort
The Timing Is Right for Semi-Active Cab Suspensions in Commercial On- and Off-Highway Vehicles
Link Manufacturing Ltd.
Safety concerns, operator comfort, asset protection, driver retention and technological advancements are all driving the introduction of the industry’s first, semi-active cab suspension.
Link Manufacturing’s Cabmate Semi-Active Cab Suspension includes an ECU which reads information from accelerometers and position sensors to determine the optimum settings for the shock absorbers to maximize ride comfort.
Clamps, Clips, Fasteners
Heavy-Duty Vehicle Fasteners: Balancing Performance with Efficiency
Optimas Solutions
Proper component analysis will ensure the right fasteners are chosen for a given application.
Selecting an appropriate fastener for an application must involve the concerns of the manufacturer, thus requiring thorough component analysis to meet specific application needs.
Expert Columns
Guidelines for Expert Columnists
Interested in submitting an article to OEM Off-Highway? Follow these guidelines to have your piece considered for publication on oemoffhighway.com or in an upcoming e-newsletter.
Oem Logo2019
Steering Control
Key Factors to Consider for Steer-by-Wire Systems
Eaton
Steer-by-wire systems are opening up new avenues to improve operator comfort and safety while making machine design easier for OEMs.
A forklift prototype fitted with a steer-by-wire system. Also depicted are harness, wiring and sensors for the propel circuit.
Trends
The First Embankment Compactor
Historical Construction Equipment Association (HCEA)
To find a better way of compacting beyond converted tractors, purpose-built heavy-duty compactors were created.
Buffalo-Springfield K-45B Kompactor
Trends
Converting Wheel Tractors to Compactors
Historical Construction Equipment Association (HCEA)
Rubber-tired tractors were faster than crawler tractors, and often remained useful after a scraper wore out beyond economical repair, so the consideration was made to also use them for compaction.
Hyster was the leading producer of compaction wheels for two-axle scraper tractors. Here, a Cat 630A is equpped with Hyster C400B padfoot wheels with cleaning bars.
Materials
Solving Engineering Challenges with Teflon
Industrial Specialties Mfg.
Teflon and other functional coatings from an experienced applicator can solve design problems including excessive wear, sticking, noise and corrosion.
Teflon products
Trends
Component Interchangeability Among Tractors and Scrapers
Historical Construction Equipment Association (HCEA)
In an effort to simplify parts inventory and maintenance, modularity and standardization became integral to project success.
A LeTourneau-Westinghouse C-500 prime mover with two unpowered scrapers.
Electronics
More Autonomy in the Near Future
Southco, Inc.
The introduction of fully autonomous off-highway vehicles is close to becoming a reality.
Bob Straka
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