2014年12月12日星期五

One way bearing technology principle

A ramp and roller design

Ramp and roller one-way clutch inner diameter of the outer drum consists essentially, with the slope and the inner spring force to bear and were always in close contact with the inner and outer rings consisting of a set of rollers. As long as one of the rotating raceway on its impact on the direction of movement has become another industry, this arrangement ensures immediate and guaranteed the ability to go beyond the speed of the drive immediately from nature.

Use:

The design of the one-way truck mounted crane bearing can fit beyond, indexing and non-return of use in a variety of environments.

When used as a use beyond the one-way clutch

Slope-style, one-way roller clutch will be installed in this manner, is to go beyond the outer ring as a member. This point is very important for high-speed beyond. Beyond the use of the inner ring, acting on the roller speed is limited by the centrifugal force will cause beyond.

When used as an anti-kickback when using one-way clutch

Only rotating the inner roller ramp type one-way clutch is adapted to a relatively low speed. If the required speed is higher than the recommended speed, we recommend using the wedge-way clutch.

When used as an indexing using a one-way clutch

The outer ring is often seen as the swing elements are often seen from the inner components. Otherwise, rollers and spring inertia will cause errors, especially at high frequencies indexing. Diluted lubricant use and powerful springs provides high-speed indexing accuracy and quality of.

2, the wedge design

This wedge roughly one-way clutch retainer consists of a strong spring and bearing inner and outer rings, wedges group, wedge. Including wedge to wedge between the outer ring to roll from one track to another raceway transfer power. Wedge has both a diagonal diameter (that is, from one corner to the other on the wedge angle distance) is greater than the other one. In a relatively large cross-section to force the wedging action occurs when the relative rotation of the outer ring inner wedge greater vertical position.

3, self-locking angle

Rely mainly on the wedge wedging action between the inner and outer rings and self-locking wedge angle. The basic concept of the one-way clutch wedge wedge friction coefficient requirements drive the direction of the inner ring with sudden torque of a relationship, the friction value must be greater than the tangent of the angle of self-locking. If the conditions are unsafe, wedging will not happen.

Self-locking by the wedge angle is determined by the structure, the point on the inner and outer rings were used to wedge and its connections.

The initial design of the wedge has a very low self-locking angle to ensure the absolute binding at the beginning. With the increase, the wedge will generate a torque so that the wedge but raceway radial deflection forces, resulting in a wedge roller to a new location. Wedges are often designed with a self-locking can be gradually increased angle, and it is up to the same position from beyond the position of the maximum load marine crane bearing. Relatively large self-locking wedge angle can be reduced by producing a radial force, so long as the ultimate elongation and Brinell hardness requirement allows greater torque is transmitted.

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