Calculation of Chain Stress
Normally, initially, tentatively decide the chain size to become used referring to “Tentative determination of chain size”. Then, obtain “Theoretical chain tension (T)” (P213) to the tentatively determined chain, and multiply the worth by “Speed coefficient (K)”, to obtain “Substantial chain tension (Ta)”. For safety, the substantial chain stress should be decrease compared to the “maximum allowable tension” stated inside the table of dimensions of respective chains. Consequently, the situation beneath needs to be happy.
Security affliction of chain tension
Significant chain tension (Ta) ＝Theoretical chain stress (T) ×Speed coefficient (K)
Significant chain stress (Ta) ＜Maximum allowable tension
If this problem is not happy, select a larger chain by a single size and re-calculate.
Tentative determination of chain size
qDetermine the mass (excess weight) per unit length of elements this kind of as chain and attachment ωc (kg/m or kgf/m) assuming that it is 10 percent of the mass (fat) from the conveyed object ω1 (kg/m or kgf/m).
wIn reference towards the calculation formulas on, get “Theoretical chain stress (T)” (kN or kgf) and “Speed coefficient (K)”, and determine “Substantial chain tension (Ta)” (kN or kgf).
eIn reference towards the table of dimensions of chains,identify the minimal chain, whose “maximum allowable tension” is higher than the “Substantial chain stress (Ta)”, and regard it as “tentatively decided chain”.
Value of velocity coefficient (K)
The pace coefficient (K) expresses the severity of operation affliction in accordance on the traveling velocity of chain since the problem gets to be severer as the traveling speed of chain gets to be larger.
Multiply “Theoretical chain stress (T)” by “Speed coefficient (K)” to acquire “Substantial chain stress (Ta)”.
When you style numerous conveyor programs employing modest conveyor chains, the next standard problems needs to be satisfied.
a. Chain tension: The real tensile power in operation should be drastically lower than the specified power in the chain.
b. Strength of loaded parts of chain: The actual loads applied to attachments, this kind of as rollers of base chain, best rollers, side rollers, and so forth. in operation have to be appreciably smaller sized than the power of these components.
c. Wear daily life of chain: Lubrication circumstances to make certain the dress in life of chain must be fulfilled.
d. Sag adjustment of chain: The sag from the chain have to be stored optimum by tension adjusters, take-up devices, guides, and so forth.
e. Others: Suitable measures are taken to stop rail wear, machine vibration together with other complications.
The following complement the over.