Ball bladder multi-ferrule bearing with reducing middle-layer ferrule

An intermediate layer and ferrule technology, which is applied in the direction of rotating bearings, bearings, bearing components, etc., can solve the problems of small axial bearing capacity, increase the center of gravity difference, and reduce frictional resistance, so as to improve bearing capacity and reduce frictional resistance. Diameter, the effect of reducing the coefficient of friction

CN102230496BActive Publication Date: 2013-01-09赵忠
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-01-09

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Abstract

The invention relates to a bearing, in particular to a multi-roller layer (multi-ferrule bearing) bearing. The ball bladder multi-ferrule bearing with a reducing middle-layer ferrule comprises a ball bladder type outer ferrule, a reducing middle-layer ferrule, an inner ferrule, an inner rolling body and outer rolling bodies, wherein the upper end and the lower end of the axial lead of the ball bladder type outer ferrule are respectively provided with a shaft mounting hole; at least two rows of outer rolling bodies bear axial force; the inner rail of the ball bladder type outer ferrule is a round ball bladder inner rail; and the diameter of the axial force bearing end of the ball bladder inner rail is small. Meanwhile, the ball bladder multi-ferrule bearing which combines a tip bearing of the axial double-row rolling bodies and a self-aligning bearing of the radial three-row rolling bodies is formed by absorbing and developing the self-aligning action and the low-friction efficacy of the tip bearing and the self-aligning bearing. The ball bladder multi-ferrule bearing with the reducing middle-layer ferrule not only has the characteristics of extremely low friction and low abrasion but also has the self-aligning action and extremely low frictional resistance of the tip bearing and the self-aligning bearing. According to the ball bladder multi-ferrule bearing disclosed by the invention, the fatal defect of the low axial bearing force of the tip bearing and the self-aligning bearing is overcome, so that the self-aligning, low frictional resistance and low abrasion of the bearing are realized, and axial and radial bearing forces are greatly improved.
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Description

Technical field:

[0001] The present invention relates to bearings, in particular to multi-roller layer (multi-ring bearings) bearings. Background technique:

[0002] In the prior art, Sweden's "SKF Bearing Company" and relevant documents in my country have clearly recorded that although multi-ring bearings can greatly reduce frictional resistance, they can generally only be used for equipment or pendulums that operate in opposite directions at the same time. Vibration equipment, or used for large rollers with low rotational speed and unstable shaft center, to compensate for eccentricity and reduce the experimental conclusions of starting resistance, because multi-ring bearings will There are fatal flaws in operation, such as:

[0003] (1) The two-layer rollers of the existing multi-ring bearings are mostly the same circumferential track line, and the middle layer ring is sandwiched between the two-layer rollers. The rings are not controlled by the shaft or the shell during o...

Examples

Embodiment 1

[0031] Such as figure 1 A ball bladder multi-ring bearing with a diameter-reducing intermediate layer ferrule is shown, which consists of a bladder type outer ring 1, a diameter-reducing intermediate layer ferrule 2, two inner ferrules 3, inner rolling elements 5 and The outer rolling body is composed of 4, and the outer circumference of the two inner rings is provided with track grooves 3-1, and shaft mounting holes are respectively opened at the upper and lower ends of the axis line of the outer ring of the bladder type, and there are 3 rows of outer rolling bodies. The inner track of the bladder outer ring is a circular bladder inner track, and the diameter of the axial load-bearing end of the inner track of the bladder is small to ensure that the axial contact angle between the inner track and the rolling body is 50 degrees. There are mounting screw holes 1-2 on it.

[0032] Among them, the variable diameter intermediate layer ferrule 2 is as Figure 4 The axial section ...

Embodiment 2

[0034] Such as figure 2 The shown a kind of ball bladder multi-ring bearing provided with a variable-diameter intermediate layer ring has the same basic structure as that of Embodiment 1, except that the inner ring is an inner ring (such as Figure 5 ). The bearings of Examples 1 and 2 are particularly suitable for steam jet engine aircraft worm fans.

Embodiment 3

[0036] Such as Figure 10 A ball bladder multi-ring bearing with a diameter-reducing intermediate layer ferrule is shown, which consists of a bladder type outer ring 1, a diameter-reducing intermediate layer ferrule 2, two inner ferrules 3, inner rolling elements 5 and The outer rolling body is composed of 4. There are track grooves on the outer circumference of the two inner rings. There are shaft installation holes at the upper and lower ends of the axis line of the bladder type outer ring. There are 3 rows of outer rolling bodies and 4 rows of inner rolling bodies. Row, the inner track of the bladder type outer ring is a circular bladder inner track, and the diameter of the axial load-bearing end of the bladder inner track is small to ensure that the axial contact angle between the inner track and the rolling body is 30 degrees.

[0037]Among them, the axial section of the main body of the variable-diameter intermediate layer ferrule has a variable-diameter structure, and t...