CN215408980U

CN215408980U - Combined wind turbine blade root structure

Info

Publication number: CN215408980U
Application number: CN202120623565.0U
Authority: CN
Inventors: 丁洪宇
Original assignee: Jiangsu Huaen Wind Power Equipment Co ltd
Current assignee: Yancheng Changzhi New Energy Technology Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2022-01-04
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses a combined wind turbine blade root structure, which relates to the technical field of wind turbines and comprises a blade root, a buffer mechanism and a positioning mechanism, wherein an arc-shaped connecting rod is arranged inside the blade root, and one end of the arc-shaped connecting rod is provided with a threaded pipe; the positioning mechanism comprises a spring arranged on the inner wall of the threaded pipe, a baffle is arranged inside the threaded pipe at one end of the spring, and a limiting ring is arranged on the outer side of the threaded pipe. According to the utility model, the buffer plate is used for protecting the root of the blade by arranging the buffer mechanism, so that the root of the blade is prevented from colliding with the mounting position of the hub when the blade is mounted, and when the root of the blade is inserted into the hub, the buffer plate is extruded by the mounting flange in the hub to shrink, so that the buffer plate is prevented from shielding the mounting hole, and the effect of protecting the root of the blade is achieved.

Description

Combined wind turbine blade root structure

Technical Field

The utility model relates to the technical field of wind turbines, in particular to a combined wind turbine blade root structure.

Background

The wind driven generator mainly comprises a tower frame, a generator set, a hub and wind turbine blades, wherein the wind turbine blades are one of the most important parts in the wind driven generator, the blades rotate to convert wind energy into mechanical energy and drive the generator to convert the mechanical energy into electric energy, and the blades simultaneously bear complex loads such as aerodynamic force, gravity, centrifugal force and the like in the rotating process, wherein the blade roots are key parts for linking the wind turbine blades and the hub.

Need drill the processing to blade root when installing the bolt at blade root to this makes the blade install take turns to, nevertheless can lead to the efficiency decline of installation so, thereby cause the influence to the production and the installation of blade, and can't carry on spacingly to blade root, can lead to the blade to rock because external factor influences when installing the blade, thereby lead to producing the collision between blade root and the wheel hub, so just have the risk that the junction of wheel hub and blade damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problem that the bolt cannot be rapidly installed and cannot be protected at the root of the blade, a combined type wind turbine blade root structure is provided.

In order to achieve the purpose, the utility model provides the following technical scheme: a combined wind turbine blade root structure comprises a blade root, a buffer mechanism and a positioning mechanism, wherein an arc-shaped connecting rod is arranged inside the blade root, and one end of the arc-shaped connecting rod is provided with a threaded pipe;

the positioning mechanism comprises a first spring arranged on the inner wall of the threaded pipe, one end of the first spring is arranged inside the threaded pipe and is provided with a baffle plate, and a limiting ring is arranged on the outer side of the threaded pipe;

the buffer mechanism comprises a support frame located on the inner wall of the root of the blade, a positioning column is arranged at one end of the support frame, an accommodating rod is arranged on the outer side of the positioning column, a second spring is arranged inside the accommodating rod, and a buffer plate penetrating through the outer side of the accommodating rod is arranged at one end of the second spring.

As a still further scheme of the utility model: one end of the buffer plate is provided with a protective pad, and the inside of the containing rod is provided with a groove with the same length as the buffer plate and the second spring.

As a still further scheme of the utility model: the other end of the buffer board is located inside the containing rod and is provided with a limiting block, and the inner wall of the containing rod is provided with a sliding groove matched with the limiting block.

As a still further scheme of the utility model: the number of the containing rods is four, and the four containing rods are uniformly distributed along the central shaft of the positioning column.

As a still further scheme of the utility model: the outside of baffle and the inner wall of screwed pipe are laminated mutually, the one end of a spring welds in the inner wall of screwed pipe, the other end of a spring welds in the one end of baffle.

As a still further scheme of the utility model: the screwed pipe is provided with the multiunit, connect through the arc connecting rod between the screwed pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. the buffer plate is used for protecting the root of the blade by arranging the buffer mechanism, so that the root of the blade is prevented from colliding with the mounting position of the hub when the blade is mounted, and the buffer plate is extruded by the mounting flange in the hub to shrink when the root of the blade is inserted into the hub, so that the buffer plate is prevented from shielding the mounting hole, and the effect of protecting the root of the blade is achieved;

2. make the screwed pipe install in the inside of blade root through setting up positioning mechanism, increase the stability of screwed pipe through spacing ring and arc connecting rod, shelter from the inside of screwed pipe through the baffle simultaneously to this provides convenience for the installation of bolt.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view showing the internal structure of the threaded pipe of the present invention;

FIG. 3 is a schematic view of the connection between the buffer plate and the receiving rod according to the present invention;

fig. 4 is a schematic view of the connection between the support frame and the positioning column of the present invention.

In the figure: 1. a blade root; 2. a support frame; 3. a positioning column; 4. an arc-shaped connecting rod; 5. a threaded pipe; 6. a baffle plate; 7. a buffer plate; 8. a storage rod; 9. a limiting ring; 10. a first spring; 11. and a second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

Referring to fig. 1 to 4, in an embodiment of the present invention, a combined wind turbine blade root structure includes a blade root 1, a buffering mechanism, and a positioning mechanism, wherein an arc-shaped connecting rod 4 is disposed inside the blade root 1, and a threaded pipe 5 is disposed at one end of the arc-shaped connecting rod 4;

the positioning mechanism comprises a first spring 10 arranged on the inner wall of the threaded pipe 5, a baffle 6 arranged at one end of the first spring 10 in the threaded pipe 5, and a limiting ring 9 arranged on the outer side of the threaded pipe 5;

wherein, buffer gear is including the support frame 2 that is located 1 inner wall of blade root, and the one end of support frame 2 is provided with reference column 3, and the outside of reference column 3 is provided with storage rod 8, and the inside of storage rod 8 is provided with No. two springs 11, and the one end of No. two springs 11 is provided with and runs through to the buffer board 7 in the storage rod 8 outside.

Please refer to fig. 3, a protection pad is disposed at one end of the buffer plate 7, and a groove having the same length as the buffer plate 7 and the second spring 11 is disposed inside the accommodating rod 8, so that the buffer plate 7 can be retracted into the accommodating rod 8.

Please refer to fig. 3, the other end of the buffer board 7 is located inside the accommodating rod 8 and is provided with a limiting block, and the inner wall of the accommodating rod 8 is provided with a sliding groove matched with the limiting block, so that the buffer board 7 can move conveniently.

Please refer to fig. 1 and 3, the number of the receiving rods 8 is four, and the four receiving rods 8 are uniformly distributed along the central axis of the positioning column 3, so as to shield the blade root 1 through the buffer plate 7.

Please refer to fig. 2, the outer side of the baffle 6 is attached to the inner wall of the threaded pipe 5, one end of the first spring 10 is welded to the inner wall of the threaded pipe 5, and the other end of the first spring 10 is welded to one end of the baffle 6, so that the baffle 6 is conveniently limited by the first spring 10.

Please refer to fig. 1, the threaded pipes 5 are provided with a plurality of sets, and the threaded pipes 5 are connected by the arc-shaped connecting rod 4, so as to fix the threaded pipes 5.

The working principle of the utility model is as follows: when the blade is produced, a worker can firstly place the threaded pipe 5 and the arc connecting rod 4 in the blade root part 1, then the blade is produced, at the moment, the inside of the blade root part 1 can be connected with the threaded pipe 5, the threaded pipe 5 is supported through the limiting ring 9 and the arc connecting rod 4, so that the stability between the threaded pipe 5 and the blade root part 1 is increased, meanwhile, the baffle 6 can shield the threaded pipe 5 to prevent external raw materials from entering the threaded pipe 5, then, the support frame 2 is arranged on the inner wall of the blade root part 1, when the blade is installed, a bolt can be screwed into the inside of the threaded pipe 5, at the moment, one end of the bolt can extrude the baffle 6, the baffle 6 can extrude the first spring 10, therefore, the bolt can be screwed into the inside of the threaded pipe 5, when the blade is installed, the buffer plate 7 in an extending state can protect one end of the blade root part 1, with this collision takes place between one end and the wheel hub that prevents blade root 1, buffer plate 7 just can contact with the inside mounting flange of wheel hub when the one end of blade root 1 inserts wheel hub's inside, continue to promote the blade alright make mounting flange extrude the one end of buffer plate 7, because the one end of buffer plate 7 sets up for the slope, so just can make buffer plate 7 retract the inside of accomodating pole 8, thereby legal system buffer plate 7 shelters from mounting flange's mounting hole, later alright install the blade through the bolt.

The above description is only for 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 should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to or changed within the scope of the present invention.

Claims

1. A combined wind turbine blade root structure comprises a blade root (1), a buffer mechanism and a positioning mechanism, and is characterized in that an arc-shaped connecting rod (4) is arranged inside the blade root (1), and one end of the arc-shaped connecting rod (4) is provided with a threaded pipe (5);

the positioning mechanism comprises a first spring (10) arranged on the inner wall of the threaded pipe (5), a baffle (6) arranged at one end of the first spring (10) inside the threaded pipe (5), and a limiting ring (9) arranged on the outer side of the threaded pipe (5);

the buffer mechanism comprises a support frame (2) located on the inner wall of a blade root (1), a positioning column (3) is arranged at one end of the support frame (2), an accommodating rod (8) is arranged on the outer side of the positioning column (3), a second spring (11) is arranged inside the accommodating rod (8), and a buffer plate (7) penetrating through the outer side of the accommodating rod (8) is arranged at one end of the second spring (11).

2. The combined wind turbine blade root structure according to claim 1, wherein a protective pad is arranged at one end of the buffer plate (7), and a groove with the length equal to that of the buffer plate (7) and the second spring (11) is arranged inside the receiving rod (8).

3. The combined wind turbine blade root structure according to claim 1, wherein a limiting block is arranged at the other end of the buffer plate (7) inside the receiving rod (8), and a sliding groove matched with the limiting block is arranged on the inner wall of the receiving rod (8).

4. The combined wind turbine blade root structure according to claim 1, wherein the number of the receiving rods (8) is four, and the four receiving rods (8) are uniformly distributed along the central axis of the positioning column (3).

5. The combined wind turbine blade root structure according to claim 1, wherein the outer side of the baffle plate (6) is attached to the inner wall of the threaded pipe (5), one end of the first spring (10) is welded to the inner wall of the threaded pipe (5), and the other end of the first spring (10) is welded to one end of the baffle plate (6).

6. The combined wind turbine blade root structure according to claim 1, wherein the threaded pipes (5) are provided with a plurality of groups, and the threaded pipes (5) are connected through arc-shaped connecting rods (4).