| 摘要 |
PURPOSE:To make manufacturing easier and to attempt both to save manufacturing man power and to reduce a cost of a reinforcing ring by enclosing each one or a plurality of closed ring-shape reinforcing rings in each cylindrical body part between arches in a device equipped with a plurality of arches. CONSTITUTION:In a device equipped with a plurality of arches, each one or a plurality of closed ring-shape reinforcing rings 8 prepd. by fixing completely the connecting part by means of welding or by sheet metal working or casting are enclosed in each cylindrical body part 13 between arches 1. As the result, as a rubber joint 14 encloses the closed ring-shape reinforcing rings 8 in the cylindrical body part 13, a troublesome connecting work disappears in the manufacturing process and the manufacturing becomes easier. In addition, as the reinforcing ring 8 is a closed ring shape wherein the end faces are monolithically jointed by welding and it has a theoretical strength, a product having a crosssectional area coinciding with a calculated value can be used and it is possible to reduce the cost of the reinforcing ring 8. |
