Floating box float blocking device capable of being stressed in two directions

The invention belongs to the field of water surface floating object interception in water conservancy and hydropower, and particularly relates to a bidirectionally stressed buoyancy tank floating object interception device which comprises end hinged supports located at the two ends, each end hinged support is connected with a connecting support, a steel wire rope is connected between the two connecting supports, a plurality of buoyancy tank devices are installed on the steel wire rope through a sliding seat, and the buoyancy tank devices are arranged on the sliding seat. A plurality of buoyancy tank devices are arranged on the steel wire rope side by side, and a chain net is installed between every two adjacent buoyancy tank devices. The floating object blocking device is simple in structure, the bidirectional floating object blocking effect can be achieved only through the steel wire rope, the floating box device and the chain net, in an actual test, smooth blocking of floating objects can be guaranteed no m