Three-directional composite self-lubricating sliding bearing for main shaft of wind turbine set

Abstract

The invention discloses a three-directional composite self-lubricating sliding bearing for a main shaft of a wind turbine set, which has simple structure, convenient installation and disassembly and low cost, can avoid eccentric loading, can bear larger and multi-directional loads, is safe and reliable, has long service life and is provided with an outer ring (1) and an inner ring (2). A plurality of uniformly-distributed radial pads (3) are arranged between the outer ring (1) and the inner ring (2), an inward left thrust ring (4) is connected with the axial left side of the outer ring (1), an inward right thrust ring (5) is connected with the axial right side of the outer ring (1), a plurality of uniformly-distributed axial thrust pads (6) are respectively arranged between the left thrust ring (4) and the inner ring (2) and between the right thrust ring (5) and the inner ring (2), the radial pads (3) and the axial thrust pads (6) are provided with communicated lubricating passages (7), and the lubricating passages (7) are communicated with an oil filling hole (8).

Description

Technical field: [0001] The invention relates to a wind turbine main shaft bearing, in particular to a wind turbine main shaft three-way combination automatic bearing with simple structure, convenient installation and disassembly, low cost, avoiding partial load, and capable of bearing large multi-directional loads, which is safe, reliable and has a long service life. Lubricate plain bearings. Background technique: [0002] The wind turbine is a kind of power generation equipment working at high altitude, and its main shaft bearing is one of the key components of the unit. In addition to bearing the self-weight of the rotating parts such as the hub and the axial positive and negative thrust under the action of wind force, the wind turbine main shaft bearing also bears the overturning moment load formed between the hub and the bearing under the hub's own weight and wind force. Bearings operate under multi-directional stress conditions. The main shaft bearings of existing la...

AI Technical Summary

Problems solved by technology

[0003] 1. When the cylindrical rolling body is in circular motion, the rolling body is not a pure rolling motion due to the difference in linear velocity at both ends, resulting in stagnation, jamming and slippage between friction pairs; because the rolling body, inner and outer rings are rigid , cannot correct the eccentric load condition caused by the tilting of the main shaft, so that the cylindrical rolling element works under the eccentric load condition; both phenomena increase the friction resistance and accelerate the wear of the rolling element and the channel, and the bearing service life is short

[0004] 2. Because the rolling bearing does not have good anti-seismic performance, it is easy to generate vibration under the action of wind and bear a large impact load, and because the actual load of the rolling bearing is point contact or line contact, the rolling body is under a large impact load It is prone to fatigue crushing and crushing, and the reliability of the bearing is low;

[0005] 3. When the wind turbine is started, stopped or operated at low speed, and the frictional working surface cannot effectively establish a dynamic pressure lubricating oil film and is in boundary lubrication or even dry friction, adhesive wear will occur between the friction pairs, and the bearings will be easily damaged;

[0006] 4. Complex structure, large volume and weight, troublesome installation and high cost

Images