CN210371029U

CN210371029U - Main shaft of wind driven generator

Info

Publication number: CN210371029U
Application number: CN201920989975.XU
Authority: CN
Inventors: 顾永久
Original assignee: Changzhou Yougu New Energy Technology Co ltd
Current assignee: Changzhou Yougu New Energy Technology Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-04-21
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a main shaft of a wind driven generator, which comprises a solid main shaft body, wherein the main shaft body comprises a shaft front part, a shaft middle part and a shaft rear part; the front part and the rear part of the shaft are respectively provided with a shaft shoulder. 6 rib plates in the axial direction are welded around the circumferential direction in the middle of the shaft at intervals; a fan-shaped annular fixing plate is arranged between every two adjacent rib plates, the radius of an inner arc of the fixing plate is equal to the radius of the middle part of the shaft, the distance between the outer arc and the inner arc is less than or equal to the width of the rib plate 2, two side edges of the fan-shaped annular fixing plate 3 are respectively welded and connected with the rib plates at two sides, and four top points of the fan-shaped annular fixing plate 3 are provided with chamfers; the fan-shaped fixing plates 3 are positioned on the same circular surface, and balancing weights are welded on the side walls of two sides of one end of one rib plate respectively. The utility model discloses a main shaft mechanical properties is guaranteed to aerogenerator main shaft on the one hand, and on the other hand is convenient for dynamic balance adjustment, and dynamic balance adjustment is simple and convenient, efficient, increases aerogenerator's safety performance on the whole.

Description

Main shaft of wind driven generator

Technical Field

The utility model belongs to the technical field of aerogenerator, concretely relates to aerogenerator main shaft.

Background

The wind driven generator is an effective utilization form of clean energy, and is widely popularized and used in various countries in the world. However, the current wind generating sets have higher failure rate according to statistics. The main shaft of the wind driven generator is a main power transmission structure in a wind power generation system, and the mechanical strength and the dynamic balance performance of the main shaft are one of key factors of the safe use performance of the wind driven generator. Therefore, after the main shaft structure of the wind driven generator is formed and assembled according to the design strength, the dynamic balance adjustment needs to be carried out, and in the prior art, the dynamic balance adjustment efficiency of the wind power shaft is lower.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a wind driven generator main shaft convenient to balance adjustment.

In order to realize the purpose, the utility model discloses a technical scheme is: a wind turbine main shaft comprising:

a solid spindle body including a front shaft portion, a middle shaft portion, and a rear shaft portion; the front part and the rear part of the shaft are respectively provided with a shaft shoulder; the middle part of the shaft is uniformly welded with 6 rib plates at intervals around the circumferential direction, the rib plates are arranged along the axial direction, and two ends of each rib plate are respectively provided with a mounting hole; a fan-shaped annular fixing plate is arranged between every two adjacent rib plates, the radius of an inner arc of the fan-shaped annular fixing plate is equal to the radius of the middle part of the shaft, the distance between an outer arc and the inner arc of the fan-shaped annular fixing plate is less than or equal to the width of the rib plate, two side edges of the fan-shaped annular fixing plate are respectively welded with the rib plates at two sides, and chamfers are arranged at four top points of the fan-shaped annular fixing plate; the fan-shaped annular fixing plates are positioned on the same circular surface, the circular surface is positioned in the middle of the shaft, and the circular surface is vertical to the axis of the main shaft body;

4 balancing weights, 4 balancing weights weld respectively on the both sides lateral wall of two of them floor one end.

All floor all are equipped with the hole, and the effect in hole is that the later stage is used according to the installation balancing weight of dynamic balance testing result, and two of them floor are equipped with the balancing weight in advance, because the statistics of original a large amount of data, detect the dynamic balance and detect the back at every turn, all be equipped with a large amount of counter weights on the floor of balancing weight in advance, lead to the counter weight time extension, so we are according to the weight of counter weight, counter weight in advance, are used for reducing the detection counter weight time of rotor assembly.

The utility model discloses a dynamic balance of aerogenerator main shaft detects the principle and does: and when the rotor rotates at high speed gradually, whether the rotor is balanced or not is evaluated by the vibration amount, if the vibration amount exceeds a preset value, the equipment can automatically calculate the specific number of the unbalance amount on the graduated circle at any angle, the counterweight is carried out according to the calculated weight, and after the counterweight is finished, the rotation detection is continued until the unbalance amount is within an acceptable range.

Compared with the prior art, the utility model discloses the technological effect who gains does: the utility model discloses a aerogenerator main shaft to the balancing weight combines floor and fan annular fixed plate, guarantees main shaft mechanical properties on the one hand, and on the other hand is convenient for dynamic balance adjustment, and dynamic balance adjustment is simple and convenient, efficient, increases aerogenerator's safety performance on the whole.

Drawings

Fig. 1 is a schematic structural diagram of a main shaft of a wind turbine generator according to an embodiment of the present invention.

Fig. 2 is a left side view structural schematic diagram of the main shaft of the wind turbine in the embodiment of the present invention.

Fig. 3 is a schematic right-view structural diagram of the main shaft of the wind turbine generator according to the embodiment of the present invention.

The reference numbers in the figures are: 11. the shaft comprises a shaft front part, 12 shaft middle parts, 13 shaft rear parts, 2 rib plates, 3 fan-shaped annular fixing plates and 4 balancing weights.

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 utility model discloses a concrete embodiment is shown in fig. 1 to fig. 3, a aerogenerator main shaft, include:

a solid spindle body comprising a front spindle portion 11, a middle spindle portion 12 and a rear spindle portion 13; the shaft front part 11 and the shaft rear part 13 are respectively provided with a shaft shoulder. The arrangement of the shaft shoulder meets the specific design of the wind driven generator, and the front end or the rear end of the shaft is provided with a key groove along the axial direction as required. The shaft middle part 12 is uniformly welded with 6 rib plates 2 at intervals around the circumferential direction, the rib plates 2 are arranged along the axial direction, and two ends of each rib plate 2 are respectively provided with a mounting hole; a sector annular fixing plate 3 is arranged between every two adjacent rib plates, the radius of an inner arc of the sector annular fixing plate 3 is equal to the radius of the shaft middle part 12, the distance between an outer arc and an inner arc of the sector annular fixing plate 3 is less than or equal to the width of the rib plate 2, two side edges of the sector annular fixing plate 3 are respectively welded with the rib plates at two sides, and chamfers are arranged at four top points of the sector annular fixing plate 3; the fan-shaped annular fixing plates 3 are positioned on the same circular surface.

4 balancing weights 4, 4 balancing weights 4 weld respectively on the both sides lateral wall of two of them floor one end.

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. A wind turbine main shaft, characterized by: the method comprises the following steps:

a solid spindle body comprising a front spindle part (11), a middle spindle part (12) and a rear spindle part (13); the shaft front part (11) and the shaft rear part (13) are respectively provided with a shaft shoulder; the shaft middle part (12) is uniformly welded with 6 rib plates (2) at intervals around the circumferential direction, the rib plates (2) are arranged along the axial direction, and two ends of each rib plate (2) are respectively provided with a mounting hole; a fan-shaped annular fixing plate (3) is arranged between every two adjacent rib plates, the radius of an inner arc of the fan-shaped annular fixing plate (3) is equal to the radius of the middle part (12) of the shaft, the distance between an outer arc and an inner arc of the fan-shaped annular fixing plate (3) is less than or equal to the width of the rib plate (2), two side edges of the fan-shaped annular fixing plate (3) are respectively welded with the rib plates on the two sides, and chamfers are arranged at four top points of the fan-shaped annular fixing plate (3); the fan-shaped annular fixing plates (3) are positioned on the same circular surface;

4 balancing weights (4), 4 balancing weights (4) weld respectively on the both sides lateral wall of wherein two floor one end.