Nuclear power main pump disassembling device

The invention provides a nuclear power main pump disassembling device which comprises a fixed base, a rotary platform, a plurality of drive branch chains and a following-up lift platform. The rotary platform is arranged above the fixed base, the plurality of drive branch chains are arranged between the fixed base and the rotary platform and support the rotary platform, and the following-up lift platform is arranged on the rotary platform through a following-up locating support assembly. A jacking device is arranged on the following-up lift platform. According to the nuclear power main pump disassembling device, through utilization of the rotary platform, a following-up locating platform and the jacking device, rotation around the Z axis is realized, and freedom degrees in the X axis, the Y axis and the Z axis are respectively controlled. The nuclear power main pump disassembling device has the advantages of being simple in control, not accumulating input errors and the like, being capable of achieving the capability of four-freedom-degree fine adjustment to a certain extent, meeting function requirements for multiple positioning and gesture adjustment in the field of nuclear main pump installation, and meanwhile effectively utilizing space, saving cost, and being convenient to apply, and good in expansibility.