U.S.TSUBAKI, INC.
IV. Finishing the ends of the conveying side. Put a chamfer on the ends of the upper rail that the chain’s small rollers travel on (Fig. 6).
III. Nominal spacing of conveyor supports. Proper operation of DOUBLE PLUS ® Chain is maintained by control- ling the amount of deflection of the aluminum guide rail. This deflection is determined from the weight of the conveyed goods and the second moment of area, shown in Table 5c. To control deflec- tion, supports should be spaced as shown in Fig. 5, in accordance with the following equation:
Figure 6–Location of Chamfer
Determining support spacing
1/4
[384 x E x I x x 12]
l (in.) =
5 x 0.6 x W
1/4
[384 x E x I x x 10 7 ]
l (mm) =
5 x 0.6 x W
l = spacing support (inches or mm) E = Young’s Modulus = 9.956 x 10 6 lbs./in. (7.0 x 10 3 kg/mm 2 ) I = Second moment of area = in. 4 (cm 4 ) (See Table 5c.) = Deflection = 0.079 in. (2mm) W = Total conveyed weight = lbs./ft. (kg/m) Note: The total conveyed weight (W) is not always distributed evenly between the two conveyor strands. This is taken into account with the factor 0.6.
It is possible to prevent the chain’s large roller from dipping at the chamfered portion by installing a support for the large roller on the ends of the rail on the driven side.
Figure 5–Nominal spacing of conveyor supports ( l )
V. Aluminum frame with steel rail. (1) Two basic constructions are used when building guide rail with aluminum frame and steel rail:
For C2030VRP-R3LS, a steel rail (no. 3) is arranged in the vertical position and lock screws (no. 4) are secured into the frame (no. 1) from both sides (see Fig. 7a). See Table 5d for dimensions and hardware.
Table 5c. Second Moment of Area Units- in. 4 (cm 4 ) Rail No.
Figure 7a–Cross section of C2030VRP-R3LS
Second moment of area ( I ) in. 4 (cm 4 )
C2030VRP-R3L C2040VRP-R4L C2050VRP-R4L C2050VRP-R3H C2060VRP-R4L C2060VRP-R4K C2030VRP-R3LS C2040VRP-R4LS C2050VRP-R4LS C2050VRP-R3HS C2060VRP-R4LS C2080VRP-R3LS
0.41148 (17.127) 0.96545 (40.185) 2.01905 (84.039) 9.80904 (408.283) 3.24668 (135.137) 2.60692 (108.508) 0.42815 (17.821) 1.06460 (44.312) 2.29735 (95.623) 10.62133 (442.093) 4.12657 (171.761) 8.66648 (360.726)
Aluminum Guide Rail
Aluminum Frame with Steel Rail
17
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