Expert Columns: Page 25

Read the latest from our collection of expert columnists and contributors.
Expert Columns
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Sponsored Content
Productivity, Uptime, and ROI Driving Equipment Purchasing Decisions
Regal Rexnord Corp.
Today's farm equipment buyers are prioritizing reliability, efficiency and lifecycle value. Explore the trends reshaping agricultural equipment demand.
Productivity, Uptime, and ROI Driving Equipment Purchasing Decisions
Electronics
Europe hopes to master the digital transition
CECE - Committee for European Construction Equipment
European associations and committees call upon the EU to develop a smart regulatory framework for digital machine technology.
From left to right: Richard Markwell, President of CEMA; Dr. Peter Jahr, Member of the European Parliament; Dominique Riquet, Member of the European Parliament; Eric Lepine, President of CECE.
Construction
The Double-Boom Excavator
Historical Construction Equipment Association (HCEA)
The annals of construction equipment design history contain quite a few oddballs, experiments, eccentricities and other contraptions that seemed like good ideas on the drawing board but just never took hold.
The Double Boom Excavator is seen here equipped with two 2.5 cu. yd buckets at work near Mounds, LA.
Trends
Compact excavators
Historical Construction Equipment Association (HCEA)
Unable to transition the cable-operation of excavators into a compact version, a different design was used involving a bucket mounted to a universal joint at the end of a dipper stick.
A restored P & H S-20 Stik-Clam owned by Dave Geis of Seward, NE, at the Historical Construction Equipment Association’s 2013 International Convention and Old Equipment Exposition.
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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Engines
A race to the starting line
Diesel Technology Forum
Part one of the emissions reduction strategy may be completed with system implementation underway, but the reduction expectations of the government are far from over.
DieselTechnologyForum 55895b93d5ff0
Engineering & Manufacturing
Telescopic excavators
Historical Construction Equipment Association (HCEA)
The introduction of interchangeable attachments paired with a telescoping horizontal boom leads to the development of the first telescopic excavators.
A Warner & Swasey G1000 Gradall demonstrates the telescopic excavator’s ability to break up and remove pavement.
Construction
The Evolution of the Skooper
Historical Construction Equipment Association (HCEA)
The Koehring Skooper is considered the first heavy-duty hydraulic front shovel machine in the American market, but where did the idea come from?
A Koehring 205 Skooper used cables for hoisting and hydraulics for bucket reach, breakout and dump.
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
Electronics
The beneficial electric throttle
Thomson Industries Inc.
Electric throttle actuators create an easy way to increase the efficiency and functionality of equipment with mechanical diesel engines.
THO ElectrakThrottleActuator 1b 5518c5676d9df
Transmissions
A new safety analysis methodology
Flanders Make
After close analysis of problems arising within SIL quantifiers, a new component-based methodology emerged.
The use case is a control system of a transmission. The inputs to this control system are (i) a switch to set the gear in forward, neutral or reverse, and (ii) a switch for up and down switching. Two safety functions are defined. In the safety analysis of these safety functions, Dana needs to perform SIL quantification on the control hardware. A simplified system concept for the controller is seen above.
HVAC
A flameless HVAC for the long haul
HVAC manufacturer designs extended life, high-efficiency flameless heating and cooling system.
FlamelessHVAC2 551b095fb2dfe
Market Analysis
Constructing the Europe of tomorrow
The European construction equipment market has good prospects for 2015 as its recovery continues, though to what extent is still unknown.
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Market Analysis
The first large American hydraulic excavators
Historical Construction Equipment Association (HCEA)
Originally marketed as a trenching machine, the hydraulic backhoe's capabilities as a mass excavating machine took years to be realized.
A Koehring 505 Skooper loads out a Euclid end dump.
Fluid Power
The First Hydraulic Excavators
Historical Construction Equipment Association (HCEA)
Using four steam cylinders and no cables or chains, the design eliminated cylinder shock and damage when working at high speed.
The photograph in this advertisement clearly shows the steam cylinder that raised and lowered the dipper stick. The second cylinder, which powered the crowd function, is barely visible inside the boom between the hoist cylinder and the boom tip.
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