Coaxially connecting small-angle rolling bearing

Abstract

The invention relates to a coaxially connecting small-angle rolling bearing which has the technical scheme that the outer wall of an inner ring is evenly and convexly provided with inner ring bulges, and an inner ring gap is formed between the adjacent inner ring bulges; the inner wall of an outer ring is evenly and concavely provided with outer ring gaps of which the shape corresponds to that of the inner ring bulge, and an outer ring bulge is formed between adjacent outer ring gaps; the inner ring bulge and the outer ring bulge are correspondingly assembled with the outer ring gap and the inner ring gap; the sizes of the inner ring bulge and the outer ring bulge are smaller than those of the outer ring gap and the inner ring gap; the outer ring and the inner ring can relatively rotate within a certain angle; the inner ring bulge is provided with an inner ring fixing hole, the outer ring bulge is provided with an outer ring fixing hole, and the center of the inner ring fixing hole and the center of the outer ring mounting hole are on the same circumstance. The invention has artful and reasonable structure, can configure a fixed pitch propeller wind generating set into a changing pitch propeller wind generating set on the premise of changing no blades and hubs, greatly improves generating efficiency and has convenient modification and low cost.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and relates to a coaxially connected small-angle rotating bearing capable of refitting an existing fixed-pitch wind power generating set into a variable-pitch wind power generating set. Background technique [0002] With the increasing pressure on energy and the environment, clean and renewable new energy has received widespread attention in recent years. Among all kinds of green energy, wind energy is one of the renewable energy sources with great potential. It is clean in use, low in cost and inexhaustible. Wind power has the advantages of large growth space for installed capacity, rapid cost reduction, safety, and energy never being exhausted. Moreover, wind power technology is relatively mature, and has the most conditions for large-scale commercial development, and the cost is relatively low. The use of wind energy to generate electricity has attracted increasing attention an...

AI Technical Summary

Problems solved by technology

This feature presents two problems that must be solved for a given pitch wind turbine: (1) When the wind speed is higher than the design point wind speed of the wind rotor, that is, the rated wind speed, the blade must be able to automatically limit the power to the rated value Nearby, because the physical properties of all materials on wind turbines are limited

In the fixed-pitch wind turbine, the blades and the hub are directly connected by bolts, and the mounting holes on the blades and the hub are in one-to-one correspondence. Obviously, under the premise that the blades and the hub are not replaced, ordinary Bearings cannot connect the outer ring and inner ring of the bearing to the blades and hubs of the wind turbine

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