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Mining Equipment

Mining Equipment

Mining Equipment

(OP)
I work on mining equipmet daily and it is a very interesting field. I see fatigue failures that go beyond any textbook could ever tell. If anyone would like to share failures I would be more than interested to share my experiences.

RE: Mining Equipment

     I remember working as a young shop aid at a farm machinery dealership.  We took a wheel tractor in on trade and discovered that it had a crack at the wheel shaft.  The shaft (steel, hardened) was approximately 3 inches in diameter (solid).  It had a keyway that ran for most of its 24 inch exposed length.  The crack was oriented in the plane that exists when viewed from the end and it had a "half-moon" shape that extended through 1/2 of the crossectional area.  

     It was easy to find when the tractor was parked so that the crack was oriented on the bottom - this put the shaft in bending such that it opened the crack.  I drove the tractor approximately 50 yards into the shop so that I could replace the shaft.  If I had to do this again, I would have figured out a way to make this move safely (it would have collapsed if the crack failed during my drive and the wheel could have crushed me).  

     I never saw the crack's surface after replacing it.  The shaft was sent to a scrap metal yard.  I often wonder how many more turns it had left...

RE: Mining Equipment

trallee;
im attending mining engineering department and im interested in mining machine. can u send me site adresses about mining machine??
thanks

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