Atlas DM45 rig - Drill rotating reducer leakage failure analysis

Atlas DM45 rig - Drill rotating reducer leakage failure analysis - 2019 09 - 28 15, fault time: 2018. 06. 20 second, failure phenomenon: drill rotating reducer and three breathing valve leakage failure analysis: drill rotating motor or variable motor damage, quantitative judgment seal or bearing damage. Four, process: 1. Decision process found the rotating oil, quantitative motor has at least one variable motor damage, first determines which damage the motor. Judgment method, 1) A cloth around the two motors to wipe clean with no oil, observe the motor without obvious oil leakage phenomenon, through the observation without oil leakage phenomenon. （ 2) Let the rotator to run for a period of time, have the same sound and feel with the hand which hot two motors. After tests found that both the motor ring and burning. （ 3) Click on the variable motor end cover to check whether variable motor bearing damage. After open the variable motor has no obvious damage. Installed end cover, ready to dismantle quantitative motor. Note: the rotating oil to wipe clean, or affect the judgment. Judge to remove gloves to judge with the hand, in the process of judgment to prevent high temperature burns. 2. Disassembly process crowbar to hang in the drill on the shelf and fixed. Hang to fit the gourd, hand gourd on the other side on the quantitative motor. Dismantle quantitative motor fixed screw and put away. Hoist the quantitative motor rises by hand. Observed a lot of iron. To determine the quantitative motor damage. Demolition of rubber hose, the quantitative and repair the motors. Note: crowbar on the drill stand to tighten, prevent fall with a crowbar. Quantitative motor are heavier, in the process of dismantling the attention should be paid to prevent knock against damage to the motor, also pay attention to prevent injuries. Demolished hose homework personnel should determine their position in the process of stability, there would be no falling down or dangerous. 3. Before installation process quantitative motor with magnetic adsorption residual iron and iron filings. After cleaned up, for quantitative motor and the rotating shaft, embedded quantitative motor rotator, installation of fastening screws and hose. Replace the rotator in oil. Clean up the oil test observation rotator presence of oil leakage. After the commissioning of troubleshooting. Note: must use magnetic adsorption residual iron rods, otherwise may make quantitative motor secondary damage. （ Source: engineering equipment technology exchange platform)