Large turn angle ball support

Abstract

The invention belongs to the technical field of bearings, and in particular relates to a large corner ball bearing. It includes a box body and a base in the box, an upper seat plate is arranged in the base, the inner wall of the base is a spherical surface with an upper seat plate mouth on the upper part, the base is composed of an upper base and a lower base, the upper seat plate It includes the shoulder of the upper seat, the waist of the upper seat and the lower shoulder of the upper seat. The lower shoulder of the upper seat is a spherical convex that matches the spherical surface of the inner wall of the base. An interval is set between the edge of the upper seat plate mouth and the waist of the upper seat plate, an annular oil storage tank is arranged on the inner wall of the base, an annular sealing cover plate is arranged on the upper surface of the base, and the upper base and The contact surface of the lower base is stepped. It solves the problems of small rotation angle, small bearing capacity, uneven pulling force and short service life of the current bearing. It can be widely used between the top and pillars of grid structure buildings.

Description

technical field [0001] The invention belongs to the technical field of bearings, and in particular relates to a large-corner ball bearing. Background technique [0002] At present, rubber bearings are mostly used between the roof and pillars of grid buildings to connect and transmit vertical loads and horizontal forces, and to meet the horizontal force and rotation angle requirements required by the deformation of the upper structure. Due to the allowable pressure of rubber bearings The stress is small and the allowable deformation is small, so its bearing capacity is small, the rotation angle is small, and the horizontal force deformation is small. It is only suitable for grid frames with small spans (spans less than 30 meters). For large-span grid structure buildings, rubber bearings It has not met the requirements, and people use to increase the rigidity of the grid to reduce the corner and horizontal force of the rubber bearing due to the self-weight and temperature chan...

AI Technical Summary

Problems solved by technology

[0002] At present, rubber bearings are mostly used between the roof and pillars of grid buildings to connect and transmit vertical loads and horizontal forces, and to meet the horizontal force and rotation angle requirements required by the deformation of the upper structure. Due to the allowable pressure of rubber bearings The stress is small and the allowable deformation is small, so its bearing capacity is small, the rotation angle is small, and the horizontal force deformation is small. It is only suitable for grid frames with small spans (spans less than 30 meters). For large-span grid structure buildings, rubber bearings It has not met the requirements, and people use to increase the rigidity of the grid to reduce the corner and horizontal force of the rubber bearing due to the self-weight and temperature changes of the upper structure, which increases the project cost.

Later, people used steel bearings. Since the upper seat plate adopts an "I"-shaped structure, the upper edge and lower side of the base are in contact with the upper seat plate plane. contact, the downward pressure is uniform, but the pulling force is uneven, which reduces the service life; and the rotation range of the upper seat plate is limited by the gap between its side and the base, so the rotation angle is small (generally less than 0.02 radians), which is not suitable for large Corner requirements

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