Posted by MIangus on December 27, 2020 at 07:23:23 from (136.181.197.248):
In Reply to: harveststore silo ? posted by swindave on December 27, 2020 at 05:15:52:
When I worked for Michigan Glass Lined in the 70's it was their hay day. High milk support payments and easy credit drove dairy expansion. They had actually been around since the late 40's early 50's. Unfortunately the unloader system required a fair amount of maintenance and care in operation. Unloader service required pulling a 5,000 pound machine out on a set of blocked up pipes or rails. The ware parts on the unloader (mainly the cutter chair) were expensive and a failure in operation created a difficult situation to say the least. The other area that caused a lot of issues was the continuous filling concept which was sold to owners. The problem originates because the silage in the top half of a silo is not compacted as densely as the bottom half. As a silo was filed that top half compacted and often pinned the unloader arm. In normal operation there is a hollow area (called the dome)in the center of the bottom and the sweep arm just cuts the outer edge of what is effectively an arch of silage. If the silo was filled too quickly and the unloader was not run every so often the dome would collapse and pin the unloader sweep arm. The best thing to do while filling was to actually pull the unloader and let it set on the pipes during filling. But this required recreating the dome system by putting the unloader in on "short arm" and then pulling it back out and reinstalling a section of the arm and a length of cutter chair. Repair of a broken cutter chain consisted of digging into the dome area clearing an area and pulling the sweep arm hub and tossing the arm and cutter chain parts out the tunnel. Air was supplied by using a small hand blower and a piece of pipe. Not a job for the claustrophobic, at times a cutting torch was required to separate the parts. I was in hundreds of domes, on my last summer my partner and I went on 52 dig outs in a row. My first wife hated it, you came home after literally rolling in sileage juice,but I think the part shed hated worse was she never knew when I would get home. Don't get me started on changing those breather bags.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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