Dry-type transformer

Abstract

The utility model discloses a dry-type transformer which comprises a base, a transformer body installed on the top of the base, a front clamping piece and a rear clamping piece, the front clamping piece and the rear clamping piece are arranged on the outer side of the transformer body respectively, a plurality of inner hexagon bolts are arranged between the adjacent front clamping piece and the rear clamping piece in a penetrating mode, and the outer sides of the inner hexagon bolts are in threaded connection with hexagon nuts. A cap used for limiting the hexagonal nut is installed at one end of the inner hexagonal bolt, a hexagonal groove matched with the hexagonal nut is formed in the inner side of the cap, a square rod is arranged in the middle of the hexagonal groove, and a plurality of elastic pieces are arranged on the outer side wall of the square rod. The nut cap, the elastic piece, the square rod and the inserting groove can prevent the hexagonal nut from rotating in the circumferential direction, the loosening risk of the hexagonal nut in the long-term vibration environment is effectively restrained, and it is guaranteed that the hexagonal nut and the inner hexagonal bolt always improve enough axial clamping force; therefore, the iron core of the transformer main body is prevented from loosening due to attenuation of clamping force, and the performance and long-term reliable operation of the transformer main body are guaranteed.

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