Transverse pin rigid coupling of main pump of nuclear power plant

The invention relates to the technical field of nuclear main pump rigid couplings, in particular to a nuclear power plant main pump transverse pin rigid coupling which comprises an upper half coupling, a lower half coupling, a detachable shaft, a pressing plate A, a pressing plate B, a plurality of pressing plate bolts A and a plurality of pressing plate bolts B. The upper half coupling and the lower half coupling are respectively connected with the detachable shaft through fastening bolts; the upper half coupling is connected with the motor shaft through a pressing plate A and a pressing plate bolt A. The lower half coupling is connected with the pump shaft through a pressing plate B and a pressing plate bolt B. Design optimization and improvement are carried out on the nuclear power unit main pump coupler, the rigidity of the main pump coupler is improved, the problem of frequent galling and seizure of coupler pins is solved, original design defects are eliminated, the problem of frequent alarm of main pump