Blade bundling and fixing hub of vertical shaft tidal current energy water turbine

The invention discloses a blade bundling and fixing hub of a vertical shaft tidal current energy water turbine, and belongs to the technical field of ship accessories. The hub comprises a first blade, a first hub body, sliding blocks, second bolts, first bolts, first sleeves, first rollers, grooves, sliding rails, second rollers, second sleeves, a second blade, a second hub body, connecting rods, connecting pieces, third bolts, an outer cylinder and an inner cylinder. The first hub body and the second hub body are of an annular structure. Four connecting rods are installed on the first hub body, the other four connecting rods are installed on the second hub body, and each connecting piece is installed on the corresponding four connecting rods. The inner cylinder is installed on the connecting pieces, and the outer cylinder is installed outside the inner cylinder. The third bolts are arranged on the outer cylinder and fix the outer cylinder outside the inner cylinder. The hub has the advantages that the width of the blades is adjustable, and the blades have different installation angles to meet different ocean current environments.