Radial joint bearing with large swing angle and large length-to-diameter ratio and injection molding method of sealing rings for radial joint bearing

Abstract

The invention discloses a radial joint bearing with a large swing angle and a large length-to-diameter ratio and an injection molding method of sealing rings for the radial joint bearing. The radial joint bearing comprises an outer ring, an inner ring, the sealing rings and grease; an outer wall of the inner ring is provided with an outer spherical surface at the middle part; the position, corresponding to the outer spherical surface, of an inner wall of the outer ring is provided with a matched inner spherical surface; the position, on the two sides of the inner spherical surface, of the inner wall of the outer ring is symmetrically provided with concave semi-closed accommodating cavities; outer side walls of the semi-closed accommodating cavities abut against the end surface of the outerring; the two sides, near the inner spherical surface, of the outer wall of the inner ring is symmetrically provided with concave embedded grooves; each sealing ring is integrally arranged in an S shape and comprises an S-shaped rubber matrix, a framework and a spring; the framework ends of the S-shaped rubber matrixes can exactly be embedded into the semi-closed accommodating cavities, while the spring ends can tightly clamp the groove bottoms of the embedded grooves; and the areas, sealed by the S-shaped rubber matrixes, of the outer sides of the inner ring and the outer ring are filled with the grease. Therefore, the radial joint bearing has the larger length-to-diameter ratio and the larger swing angle than a conventional bearing.

Description

technical field [0001] The invention relates to a centripetal joint bearing, in particular to a centripetal joint bearing with a large swing angle and a large length-to-diameter ratio, which is suitable for shock-absorbing mechanisms of engineering vehicles and recreational vehicles. Background technique [0002] Conventional bearings are generally relatively small in length and diameter, and the swing angle of the bearing is also small. It cannot meet the requirements at one time in equipment with large steering and large swing (mainly engineering vehicles, shock absorbers for recreational vehicles), and a large number of auxiliary parts are required. Only with the assistance of the equipment can the requirements be barely met. Too many auxiliary parts increase the difficulty of assembly, reduce the accuracy of the equipment, and are not conducive to the later maintenance and maintenance of the equipment. [0003] At the same time, in most conventional bearings, the lip of ...

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Problems solved by technology

[0002] Conventional bearings are generally relatively small in length and diameter, and the swing angle of the bearing is also small. It cannot meet the requirements at one time in equipment with large steering and large swing (mainly engineering vehicles, shock absorbers for recreational vehicles), and a large number of auxiliary parts are required. With the assistance of the equipment, the requirements can be barely met. Too many auxiliary parts increase the difficulty of assembly, reduce the accuracy of the equipment, and are not conducive to the later maintenance and maintenance of the equipment.

[0003] At the same time, in most conventional bearings, the lip of the sealing element is thin and soft, which is easily deformed and damaged during assembly and use, and there is no long-term effective guarantee for the sealing performance

[0004] What needs to be specially mentioned is that due to the relatively small length and diameter, the sealing space is limited and the amount of lubricating grease injected is limited, so it needs to be continuously lubricated during use. On the one hand, the process is cumbersome; on the other hand, it is necessary to Design oil injection channels and equip various auxiliary equipment required for oil injection to increase operating costs

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