Calculation of Chain Tension
Generally, in the beginning, tentatively ascertain the chain dimension to become utilized referring to “Tentative determination of chain size”. Then, acquire “Theoretical chain stress (T)” (P213) to the tentatively determined chain, and multiply the value by “Speed coefficient (K)”, to obtain “Substantial chain tension (Ta)”. For security, the considerable chain tension must be lower than the “maximum allowable tension” stated during the table of dimensions of respective chains. Consequently, the condition under must be content.
Safety ailment of chain stress
Considerable chain tension (Ta) ＝Theoretical chain tension (T) ×Speed coefficient (K)
Considerable chain tension (Ta) ＜Maximum allowable stress
If this issue isn’t satisfied, decide on a larger chain by one dimension and re-calculate.
Tentative determination of chain size
qDetermine the mass (excess weight) per unit length of components such as chain and attachment ωc (kg/m or kgf/m) assuming that it can be ten % on the mass (fat) of the conveyed object ω1 (kg/m or kgf/m).
wIn reference on the calculation formulas on, obtain “Theoretical chain stress (T)” (kN or kgf) and “Speed coefficient (K)”, and determine “Substantial chain tension (Ta)” (kN or kgf).
eIn reference to the table of dimensions of chains,identify the minimal chain, whose “maximum allowable tension” is greater than the “Substantial chain stress (Ta)”, and regard it as “tentatively decided chain”.
Worth of velocity coefficient (K)
The pace coefficient (K) expresses the severity of operation affliction in accordance to the traveling pace of chain because the affliction gets severer since the traveling pace of chain turns into higher.
Multiply “Theoretical chain tension (T)” by “Speed coefficient (K)” to acquire “Substantial chain stress (Ta)”.
If you design numerous conveyor methods utilizing tiny conveyor chains, the following essential conditions need to be content.
a. Chain stress: The actual tensile strength in operation has to be considerably reduced compared to the specified power on the chain.
b. Strength of loaded components of chain: The actual loads utilized to attachments, such as rollers of base chain, leading rollers, side rollers, and so on. in operation need to be significantly smaller than the power of these parts.
c. Wear daily life of chain: Lubrication situations to ensure the put on life of chain must be fulfilled.
d. Sag adjustment of chain: The sag on the chain must be kept optimum by tension adjusters, take-up units, guides, and so on.
e. Many others: Suitable measures are taken to avoid rail dress in, machine vibration and also other complications.
The following complement the above.