U-shaped cable clamp fitting

The invention relates to a U-shaped cable clamp fitting. The U-shaped cable clamp fitting comprises a bracket and at least one cable clamping device mounted on the bracket; each cable clamping device comprises a porcelain insulator, a clamping plate and at least two U-shaped clamps; each of the U-shaped clamps comprises a cable clamping portion and locking rods; the U-shaped clamps are arranged at two sides of the porcelain insulator in parallel; the locking rods of the U-shaped clamps are movably connected with the clamping plate through locking mechanisms; one side of the porcelain insulator abuts against the clamping plate; the inwards-recessed side surface of the other side of the porcelain insulator is matched with the inwards-recessed surfaces of the cable clamping portions of the U-shaped clamps, so that a cable passing channel through which a cable can pass can be formed; and the movement of the locking rods in locking holes can be adjusted through the locking mechanism, so that the size of the cable