High-precision lagging jack mounting trolley and application thereof

The invention provides a high-precision lagging jack mounting trolley which comprises a rack of a door-type structure, and a door opening for mechanical equipment in a tunnel to pass through is formed in the inner side of the rack; a plurality of layers of side workbenches are arranged on the two sides of the rack, jacking devices are installed on the side workbenches, lifting devices are symmetrically installed on the top of the rack, and a walking device and a supporting device are installed on the lower portion of the rack. The lifting device comprises a lifting frame, a slope frame body is arranged on the side portion of the lifting frame, a horizontal working frame body is arranged at the top of the lifting frame, a cable disc is arranged on the slope frame body, a cable on the cable disc passes through the horizontal working frame body, the tail end of the cable is suspended below the horizontal working frame body, and a lifting hook is arranged at the tail end of the cable. The jacking device comprises