Device for concrete surrounding of main arch by using hanging method

The utility model relates to a device for the concrete surrounding of a main arch by using a hanging method, and the device can be used for greatly increasing the construction efficiency of the concrete surrounding of the main arch and effectively improving the construction safety. The device comprises an arch-back flat wagon (20), a driving device, hanging rods (21), construction platforms (31), upper platforms (43) and a jacking device, wherein the arch-back flat wagon (20) is arranged on a stiffening framework (10), roller groups (23) of the arch-back flat wagon (20) correspond to upper chord pipes (11), the hanging rods (21) are arranged at the outer sides of the upper chord pipes (11) in groups, the upper ends of the hanging rods (21) are connected with the arch-back flat wagon (20), the lower ends of the hanging rods (21) are connected with the construction platforms (31) which are located below the stiffening framework (10), bottom molding boards (40) are fixedly arranged on the upper platforms (43), one ends, along the bridge direction, of the bottom molding boards (40) are hinged to the construction platforms (31), and the other ends of the bottom molding boards (40) are deflected upwards/downwards under the action of the jacking device.