Supporting roller bearing

Abstract

The invention discloses a supporting roller bearing which comprises a first ferrule, a second ferrule and a flat check ring, wherein a concave step structure rotatably distributed along the circumferential direction on the corresponding circumferential surface of the first ferrule is arranged at the end part of the first ferrule, which corresponds to an installing position of the flat check ring, the step structure is provided with an annular step surface which is in axial stop matching with the end face of the corresponding flat check ring and a ferrule conical surface rotatably distributed around the circumferential direction of the first ferrule, a snap spring capable of elastically contracting and tensioning along the radial direction for locking the flat check ring is clamped between the ferrule conical surface and the corresponding circumferential surface of the flat check ring, and a snap spring conical surface which is coincidently matched with the ferrule conical surface is arranged on the corresponding circumferential surface of the snap spring. Due to the adoption of a separable structure of the snap spring, the flat check ring and an inner ring, the supporting roller bearing is conveniently assembled and disassembled, and thus the assembly rate can be remarkably increased.

Description

technical field [0001] The invention relates to a support roller bearing. Background technique [0002] The existing supporting roller bearing has a structure such as a flat ring roller needle roller bearing disclosed in Chinese patent CN201232706Y, which includes an inner ring and an outer ring, and needle rollers are supported between the inner and outer rings, and the axial ends of the inner and outer rings are A flat retaining ring is installed between the corresponding ends, and a sealing ring is embedded in the inner peripheral surface of the end of the outer ring. The interference fit between the rings is easy to cause the inner ring to be loaded and the raceway to be deformed. It is not only difficult to install, it is difficult to separate after being fitted, the rate of fitting is low, and it affects the service performance and life of the bearing; another existing The structure of the support roller bearing is another example of the needle roller bearing disclose...

AI Technical Summary

Problems solved by technology

[0002] The existing supporting roller bearing has a structure such as a flat ring roller needle roller bearing disclosed in Chinese patent CN201232706Y, which includes an inner ring and an outer ring, and needle rollers are supported between the inner and outer rings, and the axial ends of the inner and outer rings are A flat retaining ring is installed between the corresponding ends, and a sealing ring is embedded in the inner peripheral surface of the end of the outer ring. The interference fit between the rings is easy to cause the inner ring to be loaded and the raceway to be deformed. It is not only difficult to install, it is difficult to separate after being fitted, the rate of fitting is low, and it affects the service performance and life of the bearing; another existing The structure of the support roller bearing is another example of the needle roller bearing disclosed in Chinese patent CN201125941Y, which adopts riveting points evenly distributed between the flat retaining ring and the inner ring of the bearing to be fitted together. The flat retaining ring in this structure is only fixed by the riveting points, and the strength Insufficient, can not bear the axial load, especially the impact load, and the inner diameter of the flat retaining ring and the outer diameter of the inner ring adopt clearance fit, the normal position, appearance and accuracy of the flat retaining ring are difficult to meet the requirements during riveting, and it is very easy to happen when riveting Phenomena such as skewing of the flat retaining ring and asymmetrical riveting points will seriously affect the life and reliability of the bearing, and it is inseparable after being fitted, and the rate of fitting is low

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