CN212003426U

CN212003426U - Root structure of wind driven generator blade

Info

Publication number: CN212003426U
Application number: CN202020839712.3U
Authority: CN
Inventors: 宋力; 杨磊; 焦晓峰; 冯瑞; 李晓波; 陈永艳
Original assignee: Inner Mongolia University of Technology
Current assignee: Inner Mongolia University of Technology
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-11-24
Anticipated expiration: 2030-05-19

Abstract

The utility model belongs to the technical field of aerogenerator, especially, aerogenerator blade root structure, including the hub disc, and the hub disc is arc structure, the outer wall circumference equidistance of hub disc is equipped with a plurality of spread grooves, and is a plurality of be equipped with the constant head tank on the lateral wall of spread groove, and a plurality of the inside activity of constant head tank is inserted and is equipped with the one end of motor blade, and is a plurality of fixed mounting has two sets of first slide bars respectively on the outer wall of motor blade, and the top of first slide bar all welds the dog, the outside slip cap of first slide bar is equipped with the one end of connecting plate, every two be provided with the limiting plate between the motor blade, the one end of limiting plate and the outer wall fixed connection of hub disc, the top welding of limiting plate has the second slide bar, and the other end; the utility model discloses equipment convenient and fast, simple structure, reasonable in design, the convenience is to motor blade maintenance and change, is fit for promoting.

Description

Root structure of wind driven generator blade

Technical Field

The utility model relates to a aerogenerator technical field especially relates to an aerogenerator blade root structure.

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 wind-driven generator generally comprises wind wheels, a generator, a direction regulator, a tower, a speed-limiting safety mechanism, an energy storage device and other components. The wind wheel of the wind driven generator rotates under the action of wind force, the kinetic energy of the wind is converted into mechanical energy of a wind wheel shaft, and the generator is driven by the wind wheel shaft to rotate to generate electricity.

When the current generator blade is installed, each blade is fixedly connected to the hub disc through screws, the installation mode is time-consuming and labor-consuming, the installation is complex, the installation and the disassembly are inconvenient and quick, the purposes of quick replacement and maintenance are difficult to achieve, and the requirements of users cannot be met.

In order to solve the above problems, a blade root structure of a wind turbine is provided in the present application.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

For solving the technical problem who exists among the background art, the utility model provides a aerogenerator blade root structure has equipment convenient and fast, simple structure, reasonable in design, and the convenience is suitable for the characteristics of popularization to motor blade maintenance and change.

(II) technical scheme

In order to solve the problems, the utility model provides a blade root structure of a wind driven generator, which comprises a hub plate, the hub disc is of an arc-shaped structure, a plurality of connecting grooves are equidistantly arranged on the outer wall of the hub disc in the circumferential direction, positioning grooves are arranged on the side walls of the plurality of connecting grooves, one ends of the motor blades are movably inserted into the plurality of positioning grooves, two groups of first sliding rods are fixedly arranged on the outer walls of the plurality of motor blades respectively, stop blocks are welded on the tops of the first sliding rods, one end of a connecting plate is sleeved outside the first sliding rod in a sliding manner, a limiting plate is arranged between every two motor blades, one end of the limiting plate is fixedly connected with the outer wall of the hub disc, the top welding of limiting plate has the second slide bar, and the other end sliding sleeve of connecting plate is established in the outside of second slide bar, and is a plurality of fixed subassembly is installed in the top cooperation of second slide bar.

Preferably, the fixing assembly comprises an annular fixing plate, a connecting shaft, a limiting cylinder, a first threaded hole and a bolt, wherein a plurality of connecting shafts are welded on the outer wall of the annular fixing plate at equal intervals in the circumferential direction, and the connecting shafts are fixedly connected with the limiting cylinder at one end far away from the annular fixing plate.

Preferably, the second slide bars are respectively inserted into the limiting cylinders, the size and the length of each limiting cylinder are matched with those of the second slide bars, second threaded holes matched with the first threaded holes are formed in the surface of the hub plate, and bolts are connected to the inner walls of the first threaded holes and the second threaded holes in a threaded mode.

Preferably, the motor blade includes a blade main body and a positioning block fixed at one end of the blade main body, the positioning block is movably inserted into the positioning groove, and the other end of the blade main body penetrates through the positioning groove and extends to the outside of the hub plate.

Preferably, the length of the stopper is greater than the diameter of the first sliding rod, and the stopper and the first sliding rod are arranged perpendicular to each other.

Preferably, the length of the connecting plate is less than one quarter of the length of the motor blade.

The above technical scheme of the utility model has following profitable technological effect:

the hub disc, the connecting grooves, the positioning grooves, the motor blades, the connecting plates, the first sliding rods, the second sliding rods and the limiting plates are arranged, so that the installation and the fixation between the plurality of motor blades and the hub disc are realized, the hub disc and the plurality of motor blades are not required to be fixed through locking bolts, the use is more flexible, each motor blade is not required to be connected with the hub disc through the locking bolts, the installation is convenient, the time and the labor are saved, two groups of connecting plates on the plurality of motor blades can be simultaneously fixed through the limiting cylinders, the connecting plates are prevented from sliding out of the tops of the second sliding rods in the rotating process of the motor blades, the stability in use is improved, the connecting shafts, the annular fixing plates, the bolts, the first threaded holes and the second threaded holes are matched, the fixation between the annular fixing plates and the hub disc is realized, the assembly is convenient and rapid, the structure is simple, the motor blade is convenient to maintain and replace, and is suitable for popularization.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the annular fixing plate of the present invention after being disassembled;

FIG. 3 is an enlarged schematic view of the structure at A of the present invention;

fig. 4 is a schematic structural view of a middle limiting cylinder of the present invention;

fig. 5 is a schematic structural view of a hub plate according to the present invention;

fig. 6 is a schematic structural view of the middle stop and the first sliding rod of the present invention.

In the figure: the motor comprises a hub plate 1, a connecting groove 2, a positioning groove 3, a motor blade 4, a connecting plate 5, a first slide bar 6, a stop dog 7, a limiting plate 8, a second slide bar 9, a connecting shaft 10, a limiting cylinder 11, an annular fixing plate 12, a first threaded hole 13, a bolt 14 and a second threaded hole 15.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in FIGS. 1 to 6, the blade root structure of a wind driven generator provided by the present invention comprises a hub plate 1, wherein the hub plate 1 is of an arc structure, the outer wall of the hub plate 1 is provided with a plurality of connecting grooves 2 at equal intervals in the circumferential direction, the side walls of the plurality of connecting grooves 2 are provided with positioning grooves 3, one ends of motor blades 4 are movably inserted into the plurality of positioning grooves 3, two sets of first sliding rods 6 are respectively and fixedly installed on the outer wall of the plurality of motor blades 4, stoppers 7 are welded on the tops of the first sliding rods 6, one end of a connecting plate 5 is slidably sleeved on the outer portion of each first sliding rod 6, a limiting plate 8 is arranged between every two motor blades 4, one end of the limiting plate 8 is fixedly connected with the outer wall of the hub plate 1, a second sliding rod 9 is welded on the top of the limiting plate 8, and the other end of the connecting plate 5 is slidably sleeved, and a fixing component is arranged at the top of the second sliding rods 9 in a matching way.

In this embodiment, it should be noted that the fixing assembly includes an annular fixing plate 12, a connecting shaft 10, a limiting cylinder 11, a first threaded hole 13 and a bolt 14, a plurality of connecting shafts 10 are welded on the outer wall of the annular fixing plate 12 at equal intervals in the circumferential direction, and the limiting cylinder 11 is fixedly connected to one end of the connecting shafts 10 far away from the annular fixing plate 12.

In this embodiment, it should be noted that the plurality of second slide bars 9 are respectively inserted into the plurality of limiting cylinders 11, the size and the length of each limiting cylinder 11 are matched with the size of the second slide bar 9, a second threaded hole 15 matched with the first threaded hole 13 is formed in the surface of the hub plate 1, and a bolt 14 is connected to the inner wall of each first threaded hole 13 and the inner wall of each second threaded hole 15 through a thread.

It should be further noted that the limiting cylinder 11 slides downwards from the top of the second sliding rod 9, so that the second sliding rod 9 is located inside the limiting cylinder 11, and then the bolt 14 is in threaded connection with the first threaded hole 13 and the second threaded hole 15, so that the annular fixing plate 12 and the hub plate 1 are fixed, while the annular fixing plate 12 is installed, the connecting plate 5 can be prevented from sliding out from the top of the second sliding rod 9, and by fixing the connecting plate 5, the motor blades 4 are more stable in use, the hub plate 1 and the annular fixing plate 12 can be connected through two or more groups of bolts 14, so that the stability of the plurality of motor blades 4 in use is improved.

In this embodiment, it should be noted that the motor blade 4 includes a blade main body and a positioning block fixed at one end of the blade main body, the positioning block is movably inserted into the positioning groove 3, and the other end of the blade main body penetrates through the positioning groove 3 and extends to the outside of the hub plate 1.

It should be further explained that, the positioning block is inserted into the positioning groove 3, so that the motor blade 4 is positioned, and the installation is further facilitated.

In this embodiment, it should be noted that the length of the stopper 7 is greater than the diameter of the first sliding rod 6, and the stopper 7 and the first sliding rod 6 are arranged perpendicular to each other.

It should be further noted that the stop 7 is arranged to prevent the end of the connecting plate 5 away from the second slide bar 9 from sliding out of the first slide bar 6.

In this embodiment, it should be noted that the length of the connecting plate 5 is less than one fourth of the length of the motor blade 4.

The working principle is as follows: when the motor blade fixing device is used, firstly, the positioning block on the motor blade 4 is inserted into the positioning groove 3, then the connecting plate 5 is upwards slid, one end of the connecting plate 5, which is far away from the motor blade 4, is sleeved outside the second slide rod 9, so that the motor blade 4 is installed, the installation and the disassembly are convenient, the installation is not required to be carried out through locking bolts one by one, the installation is convenient, after the installation of a plurality of motor blades 4 is finished, the limiting cylinder 11 is downwards slid from the top of the second slide rod 9, so that the second slide rod 9 is positioned inside the limiting cylinder 11, then the bolt 14 is in threaded connection with the first threaded hole 13 and the second threaded hole 15, the fixation between the annular fixing plate 12 and the hub disc 1 is realized, the connecting plate 5 can be prevented from sliding out from the top of the second slide rod 9 while the annular fixing plate 12 is installed, and the installation and the fixation between a plurality of motor blades 4 and the, the motor blades 4 are more stable when the wind driven generator is used, and the hub plate 1 is connected with a rotating shaft of the wind driven generator through the locking bolt, so that the wind driven generator drives the motor blades 4 to rotate.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A wind driven generator blade root structure comprises a hub plate (1), wherein the hub plate (1) is of an arc-shaped structure, and is characterized in that a plurality of connecting grooves (2) are formed in the circumferential direction of the outer wall of the hub plate (1) at equal intervals, positioning grooves (3) are formed in the side walls of the connecting grooves (2), one ends of motor blades (4) are movably inserted into the positioning grooves (3), two groups of first sliding rods (6) are fixedly installed on the outer wall of the motor blades (4) respectively, a stop block (7) is welded at the top of each first sliding rod (6), one end of a connecting plate (5) is sleeved on the outer portion of each first sliding rod (6) in a sliding mode, a limiting plate (8) is arranged between every two motor blades (4), one end of each limiting plate (8) is fixedly connected with the outer wall of the hub plate (1), and a second sliding rod (9) is welded at the top of each limiting plate (8), the other end of the connecting plate (5) is sleeved outside the second sliding rod (9) in a sliding mode, and a plurality of fixing assemblies are installed at the tops of the second sliding rods (9) in a matched mode.

2. The wind turbine blade root structure according to claim 1, wherein the fixing assembly comprises an annular fixing plate (12), a connecting shaft (10), a limiting cylinder (11), a first threaded hole (13) and a bolt (14), the connecting shafts (10) are welded to the outer wall of the annular fixing plate (12) at equal intervals in the circumferential direction, and the limiting cylinder (11) is fixedly connected to one end, far away from the annular fixing plate (12), of the connecting shafts (10).

3. The wind turbine blade root structure according to claim 2, wherein the second slide bars (9) are respectively inserted into a plurality of limiting cylinders (11), the size and the length of each limiting cylinder (11) are matched with the size of the second slide bar (9), the surface of the hub plate (1) is provided with a second threaded hole (15) matched with the first threaded hole (13), and the inner walls of the first threaded hole (13) and the second threaded hole (15) are in threaded connection with a bolt (14).

4. The wind turbine blade root structure according to claim 1, wherein the motor blade (4) comprises a blade body and a positioning block fixed at one end of the blade body, the positioning block is movably inserted into the positioning groove (3), and the other end of the blade body extends to the outside of the hub plate (1) through the positioning groove (3).

5. Wind turbine blade root structure according to claim 1, characterised in that the length of the stop (7) is greater than the diameter of the first sliding bar (6) and that the stop (7) and the first sliding bar (6) are arranged perpendicular to each other.

6. Aerogenerator blade root structure according to claim 1, characterised in that the length of the connection plate (5) is less than a quarter of the length of the motor blade (4).