Underwater recovery device of tube push bench

The invention relates to an underwater recovery device of a tube push bench, which comprises disjunction devices arranged on the left side and the right side of the middle section of a tool head of the tube push bench, each disjunction device consists of a hydraulic jack, a disjunction backrest, a disjunction jacking support and limiting plate and an oil cylinder support, and the hydraulic jacks are fixed on the middle section of the tool head of the tube push bench through the oil cylinder supports. The rear end of the hydraulic jack is connected with a disjoint backrest in the rear section of the tool head, the rear end of the disjoint jacking support is fixedly connected to the front section of the tool head of the pipe jacking machine, and the front end of the disjoint jacking support corresponds to the hydraulic jack; the hydraulic jack is connected with the portable electric pump through an oil cylinder pipeline, and the head of the tool head of the pipe jacking machine is separated from the middle sect