Bucket elevator drive sprocket improve - 2020
11 -
13 Feng Shuan cattle (
Jilin honored cement co. , LTD. )
The company made the workshop (
The old line)
There are two & Phi;
4.
2 m×
11 m cement mill, the two sets of the bucket elevator model number is NBH450H & times;
31050 mm left, improve ability to maximum of 450 t/h.
Two electric hoist drive mode for the chain transmission, big sprocket teeth 51, small sprocket tooth number 19, pitch, 63.
5 (
Double row)
。
A, the problems in production, size chain wheel wear faster, big sprocket 10 ~ 12 months use cycle, small sprocket is 6 ~ 8 months, life is short, also not convenient installation.
Sigh, axle hole and the damage of the key body;
Impaction, disassembly is very difficult, and sometimes can only be destructive mutilation.
Chain pin shaft and the chain plate fracture often, poor quality of the chain, the need to change 1 - every month
2 times, at the height of 5 days change 4 chain;
Good quality chain can only use 1 ~ 1.
5 months, inspection work found not in time can cause the phenomenon such as hoist killed, take material.
Second, the improvement measures changed the original big chain wheel structure to removable type while maintaining the original pitch (
P = 63。
5)
Under the condition of invariable, change the original double row of chain wheel to three rows of sprockets.
Improve the front and rear sprocket structure as shown in figure 1.
Figure 1 after three, improvement of sprocket improve structure before and after improvement situation in March 2009, after the big sprocket wheel disassembling is very convenient, also can be used in surface, prolong the service life of the chain wheel.
Basically no wear with use size chain wheel, a conservative estimate, after the improvement, the size of sprocket can be used 3 ~ 4 years, if be used in surface, can live longer.
Change after three rows of chain, chain tension increased, pin shaft and the chain plate basically no fracture phenomenon, a single chain from changing a 1 ~ 2 months to replace a 6 ~ 8 months, greatly reduces the maintenance and replacement frequency, increase the operation rate, only one drive chain, can reduce the cost more than 10, ten thousand yuan a year.
Source: 'cement'
