In 2013 we built a portable drive over grain
pit. We will use it to unload our dump truck and
grain trailer. We have provisions built into the
pit to unload side discharge gravity boxes as
well. We will be adding a hopper bottom semi
trailer in the future and we can unload that
with the pit as well. Being portable will make
moving between grain bins a snap!
We built the frame out of 6" channel iron. Where
we drive over the pit we put in extra supports
between the top and bottom. We put 3 - 5" augers
between the center pit and the 10" take away
auger.
We
built the ramps out of 6"x4"x3/16" square tubing
with 14" diamond plate as the driving surface.
Here
we are welding the ramps together.
Here
are the ramps mated up to the main frame.
We
filled in the pit area in the drive over pit.
You can see the 3- 5" augers that we have to
move the grain into the 10" take away auger.
Here
we are starting on the lift arms for the rear
wheels and the box where we transition to the
10" take away auger.
We
are working on the 10" take away auger.
Here
the hydraulic motor is connected to the auger
and the 10" auger is connected to the middle 5"
auger. At the other end the middle 5" auger
drives the outer auger by a chain.
We
built the sides for the side discharge gravity
box hopper. When we are using the main pit the
sides fold down out of the way.
Here
is our first trip over the pit. We
installed hydraulic rams on the rear wheels and
the tongue to lower the pit onto the ground.
Here we are emptying the grain trailer and dump
truck into the pit for the first time.
We
installed a flow control for the hydraulics to
control the speed of the pit's augers. It can
easily overrun the 8" x 61 that we have up to
the bin.