REDUCING OF ONE-SIDED TWISTING OF A PITMAN IN A MINERAL MATERIAL PROCESSING PLANT
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United States of America Patent
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Issued Date -
Jun 23, 2016
app pub date -
May 27, 2014
filing date -
May 27, 2014
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Abstract
A crusher for crushing mineral material, a method for decreasing twisting of a pitman in a crusher and a mineral material processing plant. The crusher includes a fixed crushing element and a pitman as a crushing element configured to be movable. The crusher includes at least two hydraulic cylinders and a piston in each hydraulic cylinder and a piston rod attached to the piston and extending through a first end of the hydraulic cylinder and being in connection with the movable crushing element. The crusher includes a hydraulic fluid connecting channel between the at least two hydraulic cylinders which connecting channel is connected to a hydraulic fluid space of the hydraulic cylinder to be pressurized by the crushing force. The connecting channel is dimensioned so that the diameter of the hydraulic fluid space of said hydraulic cylinder is at least 25 times larger than the diameter of the connecting channel.
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