PURPOSE: To provide the titled equipment to bend simply on the site a cylindrical structural body having comparatively larger ratio of plate thickness and diameter by subjecting a steel plate to a bend work with a push-bending roller moving on the outer periphery along a cylindrical bending die which is enlargeable and shrinkable and the curved face thereof, and with a curved plate fixing jig.
CONSTITUTION: A roller 3 for push-bending supported by the travelling device 6 which is on the rail 4 of the cylindrical bending die 1 that plural bending dies composing of a hinge 18 and jack 19, and by the travelling device 6 which is on the rail of the inside of the bending die 1, is moved with pinching a steel plate 11 between the bending dies 1 and performs a bending work of the steel plate 11. A fastening jig 2 fastens the bent steel plate 11 to the bending die and holds the curved face thereof. The terminal of the bent steel plate 11 is pinched by another jig and is made the prescribed cylindrical body with welding each other. Even the cylindrical structural body having larger ratio of plate thickness and diameter, the bending work can be made simply on the site.
MATSUMOTO TAKEJI
TAKEUCHI YOSHIHITO
