Oil port sealing structure used for wind power gear box

Abstract

The invention relates to an oil port sealing structure used for a wind power gear box. The structure comprises a part I, a part II and a sealing sleeve; an oil port of the part I and an oil port of the part II are connected through the sealing sleeve; O-shaped sealing rings II are symmetrically arranged between the shaft diameter circumference outer wall face of the sealing sleeve and the contact face of the part I and the part II; an O-shaped sealing ring II is arranged between combination faces of the part I and the part II; a three-sealing structure is achieved, radial sealing, end face sealing and gap sealing can effectively compensate for a micro clearance caused by torsion and other factors of the gear box; the risk of oil leaking of the combination faces of the parts is reduced to the maximum degree, and the oil leaking risk generated in the repairing and maintaining process of the wind power gear box in air can be effectively reduced; and if oil leakage of the combination faces of the parts happens, direct aerial replacement can be carried out, and the maintaining cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of sealing, in particular to a sealing structure for an oil port of a wind power gearbox. Background technique [0002] In wind power generators, the wind power gearbox is a key component of the wind power generator, and the seal of the transmission shaft in the wind power gearbox is directly related to whether the wind power gearbox can operate normally, so the seal of the transmission shaft is particularly important; the existing wind power gear The following two sealing methods are usually used in the box: (1) The joint surface of the parts is glued to ensure the sealing; (2) The joint surface of the parts is glued and an O-ring is designed on the end face of the lubricating oil port to ensure the sealing. Sealing; the sealing method (1) has disadvantages and deficiencies: the adhesive layer has a certain thickness because the joint surface of the parts and components is coated; when the gearbox is actually assembl...

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Problems solved by technology

[0002] In wind power generators, the wind power gearbox is a key component of the wind power generator, and the seal of the transmission shaft in the wind power gearbox is directly related to whether the wind power gearbox can operate normally, so the seal of the transmission shaft is particularly important; the existing wind power gear The following two sealing methods are usually used in the box: (1) The joint surface of the parts is glued to ensure the sealing; (2) The joint surface of the parts is glued and an O-ring is designed on the end face of the lubricating oil port to ensure the sealing. Sealing; the sealing method (1) has disadvantages and deficiencies: the adhesive layer has a certain thickness because the joint surface of the parts and components is coated; when the gearbox is actually assembled and glued, it is impossible to ensure that the thickness of the adhesive layer is consistent at each place, so As a result, the thickness of the glue layer on the actual joint surface is uneven, and there is a great risk of oil leakage when the lubricating oil is supplied to the planetary stage through the joint; the sealing method (2) has shortcomings and deficiencies: the joint end surface of the part and part 2 has increased An O-ring seal greatly reduces the risk of oil leakage, but the gearbox is subjected to a large torque during operation, and this torque will cause creep of the components and the joint surface of the components; When it is compressed and deformed (plastic deformation), it may not be able to fill the small gap caused by creep, resulting in oil leakage; in addition, in occasions that require frequent disassembly and repeated installation, such as aerial maintenance of the box, there will be a larger gap between the parts and the joint surface of the parts ; When reinstalling, the O-ring sealing ring may not be able to completely fill the gap, resulting in oil leakage; For on-site processing, it is often necessary to remove the gearbox for maintenance, which results in high costs and considerable waste of resources

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