一种减速器用柔性轴承

Abstract

本实用新型公开了一种减速器用柔性轴承，包括轴承外圈、内承环、密封环、第一抵环、第二抵环、辊子、滚珠和形变垫层。内承环同轴装配于轴承外圈内侧；密封环设置于内承环两端并与轴承外圈内壁形成滑动密封；第一抵环与第二抵环对称装配在轴承外圈内侧，限定两端斜向滚道，辊子沿周向等距布置于端部滚道。工作时，中部滚珠承担主要径向载荷，端部辊子与斜面滚道共同分担轴向载荷与倾覆力矩，形变垫层吸收装配偏差与载荷偏心并维持滚道同轴度，密封环构建封脂腔。该结构形成“中部径向承载+两端抗倾覆导向+柔性补偿+封闭回流润滑”的协同体系，可均化接触应力、降低温升与噪声、延长寿命，适用于减速器变载与偏心工况。

Claims

1. A flexible bearing for a speed reducer, characterized by, include: The bearing comprises an outer ring (1), an inner bearing ring (2), a sealing ring (21), a first abutment ring (3), a second abutment ring (4), a roller (5), balls (6), and a deformation pad (7); the inner bearing ring (2) is coaxially mounted on the inner side of the outer bearing ring (1); the sealing ring (21) is fitted on both sides of the inner bearing ring (2) and makes sealing contact with the inner wall of the outer bearing ring (1); the first abutment ring (3) and the second abutment ring (4) are symmetrically mounted on the inner side of the outer bearing ring (1) for use in... The rollers (5) are equidistantly arranged at both ends of the raceway between the first abutment ring (3) and the second abutment ring (4) along the circumferential direction; the balls (6) form a central raceway between the middle of the first abutment ring (3) and the second abutment ring (4); the deformation pad (7) is disposed on the inner wall surface of the bearing outer ring (1) to provide elastic support for the first abutment ring (3) and the second abutment ring (4) on the inner side of the bearing outer ring (1) to achieve flexible compensation.

2. A flexible bearing for a speed reducer according to claim 1, characterized in that: The first abutment ring (3) and the second abutment ring (4) are respectively processed into inclined raceways that match the roller (5) on opposite sides, and the surface of the inclined raceway of the second abutment ring (4) is provided with an annular groove (41). The inclined surfaces of the first abutment ring (3) and the second abutment ring (4) are provided with a predetermined inclination angle relative to the axis of the inner bearing ring (2).

3. The flexible bearing for a speed reducer according to claim 1, wherein: The roller (5) is a cylindrical roller or a conical roller arranged equidistantly along the circumference, and its axis forms an angle with the normal of the outer ring (1) of the bearing, which is used to form an oblique contact bearing at the end to limit the swing of the shaft system.

4. The flexible bearing for a speed reducer according to claim 1, wherein: The sealing ring (21) is a lip-type elastic sealing ring. The inner ring is interference-fitted with the inner bearing ring (2), and the outer edge forms a sliding seal with the inner side of the bearing outer ring (1) to retain grease and prevent dust and moisture from entering.

5. The flexible bearing for a speed reducer according to claim 1, wherein: The deformation pad (7) is an annular elastomer or a corrugated metal elastic element, which is continuously arranged along the inner wall of the outer ring (1) of the bearing. Its radial compression deformation is used to compensate for the assembly error of the housing and the load eccentricity.

6. The flexible bearing for a speed reducer according to claim 1, wherein: The first abutment ring (3) and the second abutment ring (4) are installed on the inner side of the deformation pad (7) through a slot or step. The cross section of the deformation pad (7) is a right-angled L-shape, and its inner side abuts against the outer periphery of the first abutment ring (3) and one side of the second abutment ring (4) respectively.

7. The flexible bearing for a speed reducer according to claim 1, wherein: The axial ends of the deformation pad (7) are provided with anti-slip textures or adhesive layers on the outer periphery of the bearing outer ring (1).

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