Segmental installation method for end cover of autogenous mill barrel
An installation method and self-grinding machine technology are applied in the direction of assembly machines, metal processing equipment, manufacturing tools, etc., which can solve the problems of large manpower, material and financial resources, long time spent, and high installation risks, so as to achieve low installation difficulty, Short installation time, the effect of shortening the installation time
Active Publication Date: 2012-05-30
CHINA MCC20 GRP CORP
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AI Technical Summary
Problems solved by technology
This solution is complicated to install, requires a lot of manpower, material and financial resources, and takes a long time. Once a certain link goes wrong, the end cover or hollow shaft needs to be removed and reinstalled, so the installation risk is high
Method used
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Experimental program
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Effect test
Embodiment Construction
[0014] A method for installing the end cover of an autogenous mill cylinder by splitting petals, which includes cylinder installation, hollow shaft installation and end cover installation, the end cover is divided into six petals, and the hollow shaft installation and end cover installation include:
[0015] Step 1. After the half cylinder of the self-milling machine is installed in place, install the lower three-lobed end cover in the order of first the middle and then the two sides, and pre-tighten the bolts between the end cover and the bolts between the end cover and the cylinder;
[0016] Step 2: Place the hollow shaft on the fixed lower end cover, and set up the hollow shaft support frame; when the hollow shaft is placed, use two cranes to lift it back and forth to adjust the coaxiality of the hollow shaft and the end cover; The hoisting rope is equipped with an inverted chain. When the hollow shaft is in place, adjust the hollow shaft through the inverted chain so that t...
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The invention relates to an installation method for an end cover of an autogenous mill. A segmental installation method for an end cover of an autogenous mill barrel comprises a barrel installation step, a hollow shaft installation step and an end cover installation step, wherein the end cover is uniformly divided into six segments; and the hollow shaft installation and end cover installation steps comprise the following specific steps of: installing an autogenous mill half barrel, and installing three lower segments of the end cover from middle to both sides; arranging a hollow shaft on the installed lower end cover, and arranging a hollow shaft support frame; installing two segments of the end cover on both sides of the upper part of the end cover; coating a lubricating agent on a junction surface between the segment of the end cover in the middle of the upper part and the two segments of the end cover on both sides of the upper part, jointing the end cover with the hollow shaft under the actions of the dead weights of the end cover segments and placing impact force, screwing a bolt on the hollow shaft by using a hydraulic wrench to realize joint of the hollow shaft and the end cover, and fastening comprehensively; and detaching a hollow shaft support frame. According to the invention, installation difficulty is lowered; and a large-sized crane is not required to be used, so that installation cost is saved.
Description
technical field [0001] The invention relates to a method for installing mineral processing equipment, in particular to a method for installing an end cover of an autogenous mill. Background technique [0002] The barrel of the autogenous mill weighs hundreds of thousands of tons, and consists of a hollow shaft, 12 pieces of 1 / 6 end caps and 6 half barrels. The biggest difficulty in the assembly of the autogenous mill is the assembly between the hollow shaft and the end cover and the end cover and the cylinder. The hollow shaft and the end cover have a small interference fit of 0 to 0.05mm interference, the end cover and the cylinder body have a gap fit of 0.1 to 0.2mm, and the coaxiality of the hollow shafts at both ends is required to be ≤0.5mm. [0003] The installation method for the hollow shaft and end cap of large autogenous mills in the world is: 6 pieces of 1 / 6 end caps are assembled on the ground to form a whole, and then installed on the cylinder, and then the hol...
Claims
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Inventor 刘光明李玉玲周建敏胡友斌
Owner CHINA MCC20 GRP CORP