CN209805589U

CN209805589U - Wind driven generator rotor shaft capable of preventing rotor iron core from axially shifting

Info

Publication number: CN209805589U
Application number: CN201920989973.0U
Authority: CN
Inventors: 顾永久
Original assignee: Changzhou Yu Gu New Energy Polytron Technologies Inc
Current assignee: Changzhou Yu Gu New Energy Polytron Technologies Inc
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2019-12-17
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a prevent not hard up aerogenerator rotor shaft of rotor core offers the keyway that is used for with rotor core key-type connection on the rotor shaft outer wall, the keyway slope sets up, the central line L of keyway₁A straight line L passing through the center point of the key slot and parallel to the axis₂Forming an acute included angle psi therebetween. The bottom of the key groove is provided with internal thread blind holes at intervals along the length direction of the key groove, and the internal thread blind holes are arranged along the radial direction of the rotor shaft. Compared with the prior art, the utility model discloses the technological effect who gains does: the key groove that the slope set up, during operation, rotor core can be because inertia, and it is tighter and tighter to change along the incline direction more, and then makes the rotor core who installs going can not follow the axleAnd moving towards the channel.

Description

Wind driven generator rotor shaft capable of preventing rotor iron core from axially shifting

Technical Field

The utility model belongs to the technical field of aerogenerator, concretely relates to prevent aerogenerator rotor shaft of rotor core axial float.

Background

The wind power generator is an electric power device which converts wind energy into mechanical work, and the mechanical work drives a rotor to rotate so as to finally output alternating current. The rotor includes rotor shaft and the suit rotor core on the rotor shaft, and rotor core generally piles up by the rotor punching that the cover was established on the rotor shaft and forms, and traditional aerogenerator, its rotor core are connected with rotor shaft key more, offer the keyway that is on a parallel with the axial on the rotor shaft surface promptly, and rotor core inside is equipped with be used for with keyway complex navigation key, the during operation, the easy drunkenness of rotor core in the axial of installing going.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a wind driven generator rotor shaft capable of preventing the axial movement of a rotor core.

In order to realize the purpose, the utility model discloses a technical scheme is: a rotor shaft of a wind driven generator for preventing axial movement of a rotor core is characterized in that a key groove used for being connected with a rotor core key is formed in the outer wall of the rotor shaft, the key groove is arranged in an inclined mode, and the central line L of the key groove is₁A straight line L passing through the center point of the key slot and parallel to the axis₂Forming an acute included angle psi therebetween. Internal thread blind holes are formed in the bottom of the key groove at intervals along the length direction of the key groove, and the internal thread blind holes are formed along the radial direction of the rotor shaft, so that keys can be fixedly installed, and key connection between the rotor core and the key groove is achieved. Preferably, the acute included angle ψ is 0.3 to 0.5 °.

Compared with the prior art, the utility model discloses the technological effect who gains does: the keyway that the slope set up, during operation, rotor core can be because of inertia, and it is tighter and tighter to change along the incline direction more, and then makes the rotor core who goes up to install can not the axial float.

Drawings

Fig. 1 is a schematic structural view of a rotor shaft of a wind turbine generator for preventing axial movement of a rotor core according to an embodiment of the present invention.

Fig. 2 is a schematic view of a partial cross-sectional structure of a rotor shaft of a wind turbine generator for preventing axial movement of a rotor core according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a rotor shaft of a wind turbine for preventing axial movement of a rotor core according to an embodiment of the present invention.

Fig. 4 is an enlarged schematic view of a portion a of fig. 3.

The reference numbers in the figures are: 1. keyway, 2, internal thread blind hole.

Detailed Description

The utility model discloses not confine the following embodiment to, general technical personnel in this field can adopt other multiple embodiment to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The embodiment of the present invention is shown in fig. 1 to 4The utility model provides a prevent aerogenerator rotor shaft of rotor core axial float, offer on the rotor shaft outer wall and be used for the keyway 1 with rotor core key-type connection, keyway 1 slope sets up, and the central line L of keyway 1₁A straight line L passing through the center point of the key slot and parallel to the axis₂An acute included angle psi is formed between the two, and the acute included angle psi is 0.368 deg. The keyway slot bottom is just evenly seted up 3 internal thread blind holes 2 along keyway length direction interval, and internal thread blind hole 2 sets up along rotor shaft radial direction.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. The utility model provides a prevent not hard up aerogenerator rotor shaft of rotor core which characterized in that: offer on the rotor shaft outer wall and be used for keyway (1) with rotor core key-type connection, keyway (1) slope sets up, and the central line L of keyway (1)₁A straight line L passing through the center point of the key slot and parallel to the axis₂An acute included angle psi is formed between the two parts; the key slot bottom is provided with internal thread blind holes (2) at intervals along the key slot length direction, and the internal thread blind holes (2) are arranged along the radial direction of the rotor shaft.

2. The wind turbine rotor shaft according to claim 1, wherein the rotor core is prevented from loosening, and the rotor shaft comprises: the acute included angle psi is 0.3-0.5 deg.