U.S. TSUBAKI CABLEVEYOR
Selection STEP 1. Specifications
STEP 4. Calculation of the number of chain links
When selecting the correct Cableveyor, several things must be taken into consideration. The following data must be known for proper selection. 1. Application conditions. 2. Moving stroke (ft.) 3. Moving speed (ft./min.) 4. Number and external diameters of the cables/hoses to be installed. 5. Total weight of the cables/hoses. (lbs./ft.) (In the case of hoses, the weight of the carrying element such as oil, water, etc., should be included.) 6. Allowable bending radius of cables and hoses (inch). This is determined from the intended function. STEP 2. Determining the moving stroke and bending radius The tentative selection of Cableveyor and the support roller is made as follows. Determine the approximate radius with the capability graph (page B-102). This graph is based on the distance of the moving stroke and the weight of the cables and hoses. 1. Estimate the distance of the moving stroke when a support roller is not being used. If the moving stroke is too long, use a support roller. Note that in some cases, it is more efficient not to install one. 2. Determine the bending radius of the cables or hoses. Allowable bending radius (Actual bending radius) < Standard chain bending radius (R). Regarding the bending radius of the cables or hoses, refer to the calculations below. In the case of cables, Allowable bending radius external diameter • 6 In the case of hoses, Allowable bending radius external diameter • 9 STEP 3. Adjusting the moving stroke The length of moving stroke must be adjusted if used under the circumstances listed in the Service Factor Table below.
S – + R + 2K –––––––––– P
l = 2
Margin length for each chain size (K)
Chain Size
K (at least)
TK070
4.13
TK095
5.71
TK130
7.68
TK180
10.63
STEP 5. Standard supporter selection 1. TK TYPE 1. Dimension (A): The size of the supporter may be chosen from the reference table for each chain size. (maximum cable/hose diameter) B ’ = Y + D 1 + C + D 2 + C + . . . . . D n + Y B B ’ 2. Dimension (B): B ’ = Calculated maximum supporter width B = Standard supporter width as chosen from the table D = d x 1.1, but D-d 0.08 inch C 0.16 inch Y =Refer to the below table 3. Number of supporters (N): Supporters should be installed at every 2nd pitch. When chain link number (l ’ ) l ’ is even, number of supporters is, n = –– 2 When chain link number (l ’ ) l ’ - 1 is odd, number of supporters is, n = –––– 2 SUPPORTER CHOICE TABLE Chain Size min (Y) TK070 0.39 TK095 0.59 TK130 0.71 TK180 0.71 H250 0.98
Length of moving stroke • service factor = adjusted moving stroke
For selection purposes, use the adjusted moving stroke length with the capability graph.
Service Factor Table
Operating Conditions
Service Factor
Installation Suggestion
Frequent starting Sometimes support rollers or and stopping guides are needed to prevent the chain from falling. Sudden starts and Use a large bending radius to stops with large decrease frequent vibrations
1.5
2
vibrations
caused by multiple-angle movements of the chain.
B-101
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