Hoist of speed reducer leakage treatment measures

Hoist treatment measure of speed reducer leakage, 2020 - 04 - 14 Du Lian Jin Hongbo ChanShaoRen wei-hua song ( Anyang China united cement co. , LTD. , henan anyang 455133). A, problem, describing a company cement storing hoist reducer ( Model: ZSY31531. 5) Since March 2018 production output shaft oil seal leakage will happen. Technicians believe is oil seal, Model: 200 mm & times; 250毫米× 16mm) Caused by wear and tear, and the oil spill in April 2 oil seal all change, but only lasts 1 months oil leakage problem appeared again, that the repair has not found the root cause of the problem. Aiming at this situation, technical personnel in May once again to check the reducer, confirm the problem. Second, the cause analysis, skeleton oil seal is to rely on the lip contact with equipment rotating parts to achieve sealing, long-term operation can cause wear so that the sealing effect of lip attenuation and even failure. In the consumption of oil seal lip at the same time also can cause wear and tear on the axial plane, axial plane once worn to a certain degree, even change the oil seal, the sealing effect will also be discounted. Look carefully, the field corresponding reducer hollow shaft oil seal axial plane has wear and tear, replace the new oil seal lip still wear position, generation gap, cannot be effectively sealed. Three, the measures according to the conventional repair methods, need to remove the speed reducer and the output shaft, change again after removal of gland seal, finally back to pack them one by one. The whole process is complicated, time-consuming, and lift work also there is a big security risk. Consider the time cost, technical staff decided to remove the reducer and gland under the premise of dealing with the oil at the same time, the specific plan is as follows: ( 1) Field measurement, including cylindrical, hole spacing and thickness of the original gland size, contact the machine factory, made suitable for the actual size of the split gland ( As shown in figure 1) And buy matching split skeleton oil seal standard parts. Figure 1 split gland ( 2) Using temporary downtime, the original first gland outside the oil sludge, dust cleaning, then split the prepared gland, oil seal is installed in the original gland outside side ( As shown in figure 2) , installed at the same time again in the new and old new gland gland contact surface and subdivision surface coated 588 RTV silicone sealant. In this way, the new oil seal to avoid the hollow shaft axial surface wear, ensure the sealing effect. Fourth, the effect after repair so far, the output shaft end to appear leak phenomenon, reducer operating normally, the effect is remarkable. The maintenance 2-seeded 40 min, and simple process, reduces the potential security risks, at the same time, the structure of split sealing convenient late change, also has provided valuable experience for the future similar problems to solve. Source: cement, 2019, 6