Modular centering bearing device

Abstract

The invention discloses a modular centering bearing device, which comprises a division bearing box and a conical roller bearing arranged in the division bearing box, wherein the outer surface of the outer ring of the conical roller bearing and the radial surface of the inside of the bearing box are in gap matching by using a spherical surface structure. The conical roller bearing is a double-row conical roller bearing. The division bearing box comprises two bearing box units in symmetrical arrangement; the two bearing box units are connected through screw bolts; a radial oil injection hole isformed in the bearing box unit; an oil groove communicating with the oil injection hole is formed in the middle of the outer surface of the outer ring of the conical roller bearing along the circumference; a plurality of oil inlet holes are formed in the bottom of the oil groove. The advantages of the conventional centering roller bearing and the conical roller bearing are merged; the prestress caused by assembly errors in the assembly can be effectively avoided; the unbalance loading phenomenon can also be avoided. The modular design is used; the processing is convenient; the assembly is facilitated; the device is suitable for being used as thrust bearings capable of bearing radial loads and axial loads.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a modular self-aligning bearing device. Background technique [0002] At present, the transmission chain of doubly-fed wind turbines mostly adopts four-point support form. This support form requires two main shaft bearings, one floating bearing and one thrust bearing. The selection of thrust bearings is based on spherical roller bearings and tapered roller bearings. There are mainly two types of sub-bearings, each of which has its own advantages and disadvantages. [0003] The spherical roller bearing is used as the type selection of the thrust bearing. Its advantage is that the assembly process is simple, and no prestress will be generated due to assembly errors; Not all, and often even one row of raceways on the gearbox side is loaded on a single row, which makes the raceways and rollers of this row more prone to failure. [0004] Tapered roller bearings are used as thrust b...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a modular self-aligning bearing device, so that it will not produce unbalanced load and the assembly process is simple, so as to overcome the shortcomings of the existing self-aligning roller bearings and tapered roller bearings

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