Grate cooler hammer broken problems after changing roller broken

Grate cooler hammer broken easy problems in 2020 - after the change of roll is broken 02 - 22 Dong Zhe ( Beijing jinyu technology school jinyu group cement co. , LTD. , a 2500 t/d production line is completed and put into operation in 2002, the grate cooler is the third generation of domestic equipment, the configuration of hammer crusher. After years of use, the hammer crusher power consumption is high, the drop hammer, broken shaft, such as mechanical failure occurs frequently, maintenance workload is big, especially for large clinker unable to deal with more than 1 m, often appear card, plugging material, thus overloads, drive belt skid fever burning phenomenon, which grate cooler cannot work normally. With the continuous development of roll crusher technology and perfect, roller wear resistance increase of leather material, can solve the problems of hammer crusher, and significantly reduce mechanical failure, the oversize piece of material, through multiple roller 'repeated bite, crushing effect is good, avoid the accident of the plugging material. In addition, the roll crusher sealing is good, the heat loss is smaller than hammer crusher, saving energy and reducing consumption. To do this in September, 2016, the company within the second-line grate cooler on demolition hammer crusher, replacement for PGS4 & times; 3000 type roll crusher, but in the process of production high speed shaft gear motor end serious wear and tear problems, this article carries on the analysis on this question, and puts forward treatment scheme. Introduction to roll crusher roller crusher structure as shown in figure 1. Transmission device adopts German RENK company K/PBV130 reducer, K series helical gears - namely Spiral bevel gear reducer and P series of planetary gear reducer combination. The roller crusher for 44 kw motor power, compared to the original hammer crusher to reduce 31 kw, since the installation work, rarely fails, use effect is good, the production efficiency has improved significantly. Figure 1 roll crusher structure 2 failure occur in June 2017, the roll crusher roller motor 1 has sound and vibration, the technical department preliminary judgment for motor bearing damage. Clinker production line electrical personnel to replace the roller broken found that when 1 # machinery motor speed bearing motor shaft transmission gear wear serious, and there was some wear and tear, and the meshing of gear is so notify the mechanics, wear is shown in figure 2. Figure 2 gear lubrication and wear failure analysis and processing speed reducer internal structure found that although the oil window display oil level is normal, but the high-speed shaft pinion has no contact with the oil, the oil level is lower than under the gear end around 50 ~ 60 mm, under the condition of no lubrication, gear is bound to cause severe wear. Due to (the roller broken reducer are all the same, German RENK company) Production and structure is the same, the other 3 deceleration machine also has the same problem. Measures: to do the 1 # small gear reducer, surface treatment at the same time will vent to take over the heightening of the gearbox, in order to improve the oil level, and identify new lubricating oil, ensure that meet the demand of high speed shaft gear meshing lubrication, as shown in figure 3. Figure 3 vent and fault analysis of this fault Germany again and the processing of RENK company seems to be familiar with and by default, mail gear several spare parts separately. The author through the consult K/PBV series reducer, found that usually overhaul period of 40000 h, the factory is due to the helical - Spiral bevel gear reducer lubricating oil does not reach the designated position, the gear serious wear and tear, such speculation should be RENK company reducer design out of the question. Going through the installation drawings, found that not all installation company according to the construction of the assembly drawing, installation personnel think reducer vertical installation and beautiful, did not follow the installation instructions on the installation tilt Angle, make this kind of reducer design flaws. Installation drawings left view, spun round flange connection of reducer are 15 & deg; Installation, namely, motor and reducer tilt 15 & deg; So that the lubricating oil can reach high speed shaft gear meshing motor parts, as shown in figure 4. Figure 4 reducer installation drawings to collect other factory installation information found that Germany RENK company K/PBV130 reducer are inclined installation, as shown in figure 5. Confirmed the owe between this kind of reducer lubrication defects, so the expedient measure, can only be tilted configuration, so as to make up for the design defects, avoid bad lubrication and appear dry friction fault. Most economic and practical, the most radical solution, is in accordance with the requirements of drawings, adjust the motor and deceleration machine installation, machine of decelerate of recovery vent, oil standard hole effect, making the problem solved. Figure 5 landscape group a line roller crusher reducer 5 conclusion summary described in this paper, fault analysis and processing experience, suggested that technological upgrading, the technical personnel to elaborate, according to the installation drawings acceptance, with industry experts to explore more, avoid small problems generate big fault. The equipment installation quality cannot despise, accidents often is the equipment installation quality is low. For any equipment to find out its working condition, working status, seize the question essence, targeted to make the necessary improvements. Such reducer shall be timely design improvements, to avoid this problem is repeated, manufacturers to use unnecessary losses. Source: 'cement'