Portable movable arch bridge main arch ring detection platform device

The invention discloses a portable movable arch bridge main arch ring detection platform device. The device comprises a detection platform with a side U-shaped structure, the detection platform comprises a top and a bottom which are horizontally arranged, and a vertical connecting part for connecting the top and the bottom, wherein the top is supported on the top end surface of a main arch ring through walking wheels at the bottom of the top, the bottom is located below the bottom surface of the main arch ring, a crawling ladder is arranged on the vertical connecting part, a balancing weight and a motor driving apparatus are arranged at the top of the detection platform, and the motor driving apparatus is connected to the walking wheels. The platform device can be installed on site, can also be transported to the site to be assembled after a part of the platform device is installed in advance, and can also be set as a permanent device and placed on a bridge to facilitate daily inspection. The structure is saf