ROLLER GATE

PROBLEM TO BE SOLVED: To provide a roller gate, reducing its weight and cost. SOLUTION: In this roller gate 1, an end stringer 20 of a gate body 10 is constructed like a box by connecting a first flange 21, a first web 22, a second web 24, and a second flange 23 to each other, a main roller shaft 40 is supported by the first web 22 and the second web 24 of the end stringer 20, and torsional force applied to the support part from the main roller shaft 40 is transmitted to a main girder 12 through the box-shaped end stringer 30, whereby the load applied to the main roller shaft 40 can be smoothly transmitted to the main girder 12, and the opposite space between the first web 22 and the second web 24 of the end stringer 20 supporting the main roller shaft 40 can be reduced. Thus, the total length of the main roller shaft 40 can be reduced, the weight of the whole roller gate 1 can be reduced, and the cost can be lowered. COPYRIGHT: (C)2008,JPO&INPIT