Roman arc forming device at roof vent

Abstract

This utility model relates to the field of building engineering technology and discloses a Roman arc forming device for roof vents, including a first mold, a second mold, and a base plate. Both the first and second molds are hollow frustum-shaped components with openings at the top and bottom, with a smaller upper opening and a wider lower opening. The first mold has a first connecting ring and a first fixing ring extending away from it at its upper and lower openings, respectively. The second mold has a second connecting ring and a second fixing ring extending away from it at its upper and lower openings, respectively. The first connecting ring and the second fixing ring are fixedly connected by multiple sets of circumferentially distributed fastening bolts. The first fixing ring is also fixedly connected to the base plate by multiple sets of circumferentially distributed fastening bolts. This device uses multi-layer fastening bolts, enabling detachable construction. Multiple molds can be selected to form the required Roman arc size. It is simple to operate, has significant effects, saves construction costs, and improves construction efficiency.

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