Harken R32, Руководство пользователя, Страница: 11 / 32

Access Rail System – R32
5h Rail length and loading trolley assembly -
Leave room
at the rail end to load trolley assembly. The trolley assembly
is 385 mm (15 3/16") in length.
As a general rule, leave a space between the end of one rail
segment and the next to allow for thermal expansion.
Spacing of 3 mm (.118") is appropriate and will allow the
trolley assembly to roll smoothly over the gap. Use the
O-ring supplied with the IN3198 splice link as a spacer tool
to set the gap between rails. Be sure to follow mounting
instructions for alignment and fasteners at splice links.
385 mm (15 3/16")
Plan on room at end of rail to load trolley assembly.
5 - RAIL INSTALLATION GUIDELINES
(Continued)
5g Thermal expansion
- It is the responsibility of the system designer (qualified engineer) to carefully evaluate the
thermal expansion which will be submitted to the system, particularly with respect to the rail.
It is not possible for Harken to predict the effects of thermal expansion on rail, especially with two (2) dissimilar
materials, where the material of the mounting surface and anticipated temperature the system is subjected is not
known.
The system designer must analyze the relative coefficient of thermal expansion of rail and mounting material and
decide on the appropriate method of mounting, sealing fasteners, and gaps between rail sections. Consult
manufacturers for information regarding thermal expansion.