Adjustable assembly trolley used for liquid-propellant rocket engine rotor assembly

The invention belongs to the technical field of liquid-propellant rocket engine assembly. In the manufacturing process of a liquid-propellant rocket engine, engine assembly is one important working procedure which is ongoing in the end; and the assembly of an engine rotor relates to many pars, high quality requirement, heavy assembly work and high safety risk. The designs of a lifter, a clamp holder and adapter coupling pieces of an assembly trolley meet the fixed requirements of different sizes of rotors, and have certain universality. Meanwhile, the 360-degree rotation and position locking functions of the clamp holder are beneficial to the any-angle lifting and assembly of a rotor rotating shaft and an assembled unit body, so that the product safety can be ensured, and the operation is facilitated. The use of the assembly trolley is capable of reducing the labor intensity of a worker and improving the assembly efficiency.