Prevent stress concentration's hydro -cylinder tie -rod head

The utility model provides a prevent stress concentration's hydro -cylinder tie -rod head, includes a pulling rod base and two round pin axle beds, two round pin axle beds lie in pulling rod base's both sides respectively, establish the round pin shaft hole on each round pin axle bed respectively, the coaxial setting in shaft hole of two round pins, the round pin shaft hole is connected with the swing arm through the round pin axle, pulling rod base's top surface, the both sides of not establishing the round pin axle bed are equipped with the chamfer, the central point of pulling rod base bottom surface puts and establishes the screw hole, and the screw hole is connected with the pull rod, the screw hole is screw thread blind hole structure, and the wall thickness of screw hole is not lessthan 30mm. The utility model discloses a screw thread blind hole structure has eliminated the stress concentration of current pulling rod base top surface verge of opening, has improved tie -rod head's structural strength an