The SEW machine of decelerate of triad disassembly process and seal form improvement

The SEW triad reducer disassembly process and improvement in 2020 - in the form of sealing 05 - 25 Shi Yao ( Port of zhangjiagang port group sheng branch) My company 1250 t/H shipment machine running gear for motor, reducer, brake drive form of triad, adopting SWE KA97 single bond hollow shaft speed reducer. Machine shipment since put into use, all walking speed reducer appeared serious leakage problem on both ends of the output shaft, need to change the skeleton oil seal, but the speed reducer is difficult to remove the. Unable to remove the reducer can't replace the oil seal. To this end, we the removal process of the speed reducer and sealing was improved. 1 1, problems and the reason analysis. 1 reducer output shaft, the serious my company is given priority to with mineral powder, coal and other bulk operations, poor working conditions, dust. Reducer output shaft at both ends of bare skeleton oil seal leakage, dust accumulation cause oil seal is easy to wear failure, causing serious speed reducer leakage. 1. 2, reducer, remove difficulties ( 1) Large in the resistance reducer disassembly. Because of the speed reducer adopts single bond is hollow shaft, and cooperate with the length of 300 mm, flat key 250 mm long; Kuangfen, coal dust into the hollow shaft, causing resistance reducer removed. ( 2) Assembly design did not consider dismantling process. Although the SEW company provides the reducer special disassembling tools, but the loading machine on the walking wheel and gear reducer assembly design did not consider the mounting process, lead to disassembling tools cannot be used. ( 3) Due to the gap between the walking speed reducer and wheel is small, jack can only walk on the lateral jacking shaft. Walking inside because of the speed reducer of the hollow shaft diameter is less than the inner diameter of the shaft sleeve, press the top pressure is less than the hollow shaft, hollow shaft force, speed reducer cannot be removed. Such as direct roof pressure reducer shell is easy to cause the fracture. Improvement project of 2, 2. 1, disassembling technology improvement to the original single collar instead of two separation sleeve, the lateral processing steps ( See figure 1) , using self-made pressure bed top pressure with the steps of shaft sleeve, directly make hollow shaft bearing of the gearbox, will walk round out ( See figure 2) , so as to solve the reducer disassembly problem, at the same time, avoid the risk of the reducer shell fracture. First remove the following methods: first, demolition of walking wheel cover screw, and then walk on the axle sleeve welding two thickness is 22 mm docking a half circle, homemade small press, 200 t hydraulic one thousand catties by walking wheel, round to walk out. 2. 2, sealing dust improvement on both ends of the output shaft equipped with seal dustproof cover ( See figure 3) And use the SEW reducer reserved silk hole on the shell to tighten. Cover plate charging lithium base grease in auxiliary seal, the inside of the cover plate is set on oil, to the inside of the cover board on a regular basis in charging lithium base grease, this can avoid dust into the hollow shaft, and can avoid frequent damage skeleton oil seal dust exposure, greatly improving the service life of skeleton oil seal, solves the problem of the SEW speed reducer leakage, and at the same time to avoid the dust into the hollow shaft, reduction gearbox disassembly easier. 3, improve the effect of the improved the SEW triad reducer seal is good, can adapt to bad environment, bulk terminal use leak problem has not improved, and can easily remove, convenient maintenance. SWE triad reducer and remove the difficult problems of serious leakage, and with our company special working environment and the shortcomings of walking machine drive mechanism design of shipment. So in the future when purchasing new equipment, should be strictly controlled, considering the influence of environmental factors on the related parts, to avoid similar situation occur. Source: 'port'