Expert Columns: Page 21

Read the latest from our collection of expert columnists and contributors.
Expert Columns
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Agriculture
"Green Future – Smart Technology" – Opportunities and Challenges of Digitization in Agriculture
German Agricultural Society (DLG)
Prof. Dr. Hans W. Griepentrog, University of Hohenheim, overviews the benefits and potential drawbacks of agricultural equipment digitization in the lead up to DLG's Agritechnica 2017.
Construction
The Rubber-Tired Dozer
Historical Construction Equipment Association (HCEA)
The advent of pneumatic rubber tires enabled the development of a wheeled alternative to crawler tractors which could provide increased speed and mobility in certain applications.
The ancestor of all wheel dozers is this diminutive machine, a John Deere D farm tractor outfitted in 1936 with an experimental blade designed by R. G. LeTourneau.
Software
Sorting the Wheat from the Chaff
Siemens Digital Industries Software (formerly Siemens PLM Software)
Computational fluid dynamics (CFD) helps to design better off-highway vehicles.
Figure 2
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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Engineering & Manufacturing
The Side-by-Side D9
Historical Construction Equipment Association (HCEA)
Seeking increased material handling, a double-vehicle solution was created placing two dozers next to one another with a shared, long dozer blade.
Caterpillar D9H crawler tractors in the SxS arrangement, with the standard 24-foot dozer. The Double Dude variant’s angle dozer was twice as long, and the tractors were offset 11 ft. to accommodate it.
Seals, Gaskets
Next-Generation Mobile Machinery Sealing
Freudenberg Sealing Technologies - NOK
Optimized combi and cassette seals for today’s market challenges.
Figure 3: Cassette-HS-EVO image
Trends
The Dual D9
Historical Construction Equipment Association (HCEA)
Instead of multiple tractors coordinating efforts behind a single scraper, a lead tractor was coupled with a second via a ball joint and operated by synchronized controls.
Caterpillar D9G crawler tractors with the Quad-Track Arrangement, shortly after the arrangement was introduced.
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
Trends
How do EVs and Autonomy Demands Effect the Off-Highway Powertrain Market?
IDTechEx
What is the Effect on the Off-Highway Powertrain Market from Growing Electric Vehicle and Autonomy Demand?
Battery On Wheels E1471445279424 5903eb80d5827
Construction
Pushloading
Historical Construction Equipment Association (HCEA)
The introduction of large scrapers suitable for use behind crawler tractors brought about various methods for scraper loading.
Caterpillar D9G crawler tractors with front cushion push plate (left) and rear cushion block (right).
Testing
Unattended Testing & Analysis: Breaking the Data Collection Barrier
A new approach to field testing and analyzing equipment provides engineers with access to a far more complete picture of the actual conditions, stresses and events that lead to structural failures.
Data acquisition equipment stored onboard a piece of off highway equipment. The data can be accessed remotely via cell phone, laptop, etc to check and download data.
Operator Interface
How to Control a Bulldozer
Historical Construction Equipment Association (HCEA)
Variations of dozer attachment control over the decades have included everything from hand-operation to cables to the earliest forms of hydraulic control.
A restored Cat Sixty with a counterbalanced LaPlant-Choate hydraulic dozer.
Engineering & Manufacturing
The Earliest Bulldozers
Historical Construction Equipment Association (HCEA)
From primitive to mechanical, the evolution of the bulldozer begins in the 1800s and is interjected with a contribution from the agricultural industry with crawler tractors.
Stroud & Company of Omaha, NE, offered this stock-powered dozer, dubbed the Marsh Filler, circa 1920.
Engineering & Manufacturing
Shovels or Draglines for Overburden Removal?
Historical Construction Equipment Association (HCEA)
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