Spherical hinge structure for anti-drawing device

The utility model belongs to the technical field of shock insulation supports, and particularly relates to a ball hinge structure for an anti-drawing device, which comprises a ball seat, a ball head is movably sleeved on the inner wall of the ball seat, a gland is fixedly mounted on the upper surface of the ball seat through a bolt, the ball head penetrates through the gland and then extends to the outside of the gland, and the ball head is movably sleeved on the inner wall of the ball seat. A lubricating and impurity removing device is arranged at the connecting position of the ball seat and the gland so as to achieve lubricating and impurity removing actions on the surface of the ball head, an anti-drawing rod is connected to the ball center of the ball head in a threaded and inserted mode, and a dustproof device elastically connected with the surface of the gland in a clamped mode is arranged on the surface of the anti-drawing rod. According to the spherical hinge structure for the anti-drawing device, by