Problems that should be paid attention to in the maintenance and repair of sand making machine
Today, the editor will introduce the maintenance and overhaul of sand making machine: the purpose of maintenance and overhaul of sand making machine is to repair and replace damaged and worn parts, restore its working ability, and ensure the safe operation of the sand making machine. .machine. The content includes daily maintenance and regular inspections. This work is carried out by dedicated staff. After the sand making machine has been running for 3 months, the fasteners should be tightened again.
1. Regular inspections include weekly inspections, monthly inspections, and annual inspections. Weekly inspection: check whether the bolts and nuts in each part are loose, whether the sensor leads are damaged, and the working conditions of the reducer and the motor. Monthly inspection:
2. Check the wear of the damaged ring gear at least once a month. Annual inspection: It is required to conduct a comprehensive inspection of the sand making machine, disassemble and wash the bearings of the motor, reducer, and crushing roller, and clean up the waste lubricating oil in the sand making machine.
3. Check the wear of the transmission parts. If the wear is severe, replace it; check the wear of the synchronization gear and gear coupling. If the wear is severe, it should be replaced; refill the turbo coupling with the specified amount of oil. At the same time, the nuts of each part need to be tightened once. After the body is disassembled and repaired, when reassembling, a 1mm thick sealant must be evenly coated on the joint surface of the upper and lower bearing seats and the stationary joint surface of the body to prevent oil leakage on the sealing surface. When the sand making machine is reassembled, the tightening torque of the bearing seat bolts and the high-strength bolts of the machine body should be strictly controlled. The tightening torque of M20 bolts is 350 Ⅳ·m, and the tightening torque of M24 bolts is 600 Ⅳ·m. Pay attention to the order of tightening the bolts and tighten the bolts at the corners.
4. Before the bearing is installed, check the original clearance of the bearing. Adjust the radial clearance of the bearing with the tightening bush. The radial clearance of the bearing is reduced by 0.07~0.13mm. After the bearing is installed, the minimum remaining clearance is 0.07mm.
