Dave,
Gin poles are also used in boat yards to remove and replace masts on
sailboats. I suspect they have been around for far more than 100
years, too, since they represent a couple simple machines in
combination: levers and pulleys.
Phil
At 5/20/2013 10:29 PM -0500, David wrote:
I have just learned new things after my last 2 digging trips. I
am going to attempt
to explain those things even though, I don't yet fully grasp what I am saying.
A truck which has an A-frame boom mounted on it, is used for lifting
heavy things, and is
formally called a "Gin Pole Truck," and the boom is called a "gin pole."
<http://www.dodgepowerwagon.com/pictures/dodge'n/ginpole.jpg>http://www.dodgepowerwagon.com/pictures/dodge'n/ginpole.jpg
A Gin Pole Truck is a truck with a gin pole on it.
The gin pole can be mounted on the front bumper, as shown in the
link below, or the back of the truck.
<http://i176.photobucket.com/albums/w191/tanglediver/rig21.jpg>http://i176.photobucket.com/albums/w191/tanglediver/rig21.jpg
Below is a good educational video clip that explains some safety procedures.
( special note: see 2:31 into video "Use extreme caution when
backing up ! )
<http://www.youtube.com/watch?v=2JUO73GKqeE>http://www.youtube.com/watch?v=2JUO73GKqeE
Here are some details about operating such a truck:
<http://www.iadc.org/committees/rigmoving/Documents/Gin%20Pole%20Truck%20Guidelines%20initial%20issue%20march%202010.pdf>http://www.iadc.org/committees/rigmoving/Documents/Gin%20Pole%20Truck%20Guidelines%20initial%20issue%20march%202010.pdf
Gin Pole Trucks are commonly used in pipeline work and oil-field
work. I have seen them before from
a distance, but never had a clue what purpose they served, or the
skill needed to operate one.
When used in surface mining of a cave, the truck operator is
intensely working the truck and the
winch and watching and listening to every detail as to what is going
on with the equipment and
the action deep below in the cave entrance.
Gin Poles have been around for over a 100 years:
<http://www.youtube.com/watch?v=te-tXkzPGUc>http://www.youtube.com/watch?v=te-tXkzPGUc
The one being used by the Kiwi Sink Crew is much like the one below:
<http://i.ebayimg.com/00/s/ODk5WDE2MDA=/z/AsgAAMXQgoBRhs~6/$(KGrHqJHJEkFE2,s+(4!BRhs+5,bOQ~~60_1.JPG?set_id=880000500F>http://i.ebayimg.com/00/s/ODk5WDE2MDA=/z/AsgAAMXQgoBRhs~6/$(KGrHqJHJEkFE2,s+(4!BRhs+5,bOQ~~60_1.JPG?set_id=880000500F
Feel free to correct me on any of this, as it is all new to me, and
I am relying on the
web for my information. And feel free to add anything
interesting to the topic.
Some may call this an oilfield pole truck. Surely, there are other
names, but I don't
know, maybe a Roustabout Truck ? Advertisements for such trucks
seem to say
"Winch Truck with Gin Poles."
It appears that there are 3 different gin pole rig set ups on a
truck. One for just lifting, another for lifting,
and then moving the object onto the very same truckbed , and another
for erecting a tall structure.
It seems many cavers are certified in the use of gin poles. I was
unaware of that.
David Locklear
caver in Fort Bend County, Texas
NSS # 27639
Other references:
Dictionary for Petroleum Equipment calls this a Gin-Pole Truck (
with a hyphen )
<http://i1237.photobucket.com/albums/ff465/Lang47/Truck%20Forum/red3.jpg>http://i1237.photobucket.com/albums/ff465/Lang47/Truck%20Forum/red3.jpg
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