Buckle locking structure of fan blade of wind power plant

Abstract

The utility model relates to the technical field of wind driven generators, and discloses a buckle locking structure of a fan blade of a wind power plant, which comprises a fan protection shell and a fan blade main shaft, the inner top wall of the fan protection shell is fixedly connected with a fixing block, the bottom of the fixing block is provided with a mounting groove, and the fan blade main shaft is fixedly connected with the fan protection shell. A first brake arm and a second brake arm are rotationally connected to the two sides of the interior of the mounting groove, a first movable block is welded to the bottom end of the first brake arm, and a second movable block is welded to the bottom end of the second brake arm. According to the buckle locking structure for the fan blades of the wind power plant, through the arrangement of the motor, the first brake arm, the second brake arm and the pull rope, when a fan breaks down and needs to be maintained by maintenance personnel, the motor restrains the pull rope, so that the fan blades can be locked through friction between the first brake arm and the second brake arm and the fan blade main shaft, and rotation of the fan blades is prevented; and the locking reliability of the fan blades of the fan is improved, so that the safety of maintenance personnel is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind driven generator technical field, concretely is a buckle locking structure of fan blade of wind farm. BACKGROUND

[0002] Wind driven generator is the mechanical work that will wind energy conversion, mechanical work drives rotor rotation, ultimately output alternating current electric power equipment, wind driven generator generally has wind wheel, generator, direction regulator, tower, speed limiting safety mechanism and energy storage device etc. component composition, utilize the equipment of wind power generation or wind power generation, and wind power technology equipment is the important component of wind power industry, is also the basis and guarantee of wind power industry development, megawatt wind turbine unit is hoisted wind wheel in wind field, and when the fault variable pitch motor or variable pitch gear box in wind wheel is maintained, replaced, must lock the wind wheel blade to prevent its rotation, thereby protecting the safety of the operator.

[0003] At present, for the relatively small size, specification fan, the traditional operation mode is to prevent the blade from rotating by clamping the nut on the blade through the clamping device, which can realize the corresponding function, with the continuous improvement of wind power generation technology level, the size, specification of fan is bigger and bigger, the more and more bolts are distributed on the mounting circle of the same blade root diameter, which leads to the smaller and smaller distance between the bolts, and finally leads to the too low strength of the blade locking device, which cannot reliably lock the blade, and there is certain safety hazard. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to overcome the above technical defects, and provide a buckle locking structure of fan blade of wind farm.

[0005] In order to solve the above problems, the technical scheme of the utility model is as follows: a buckle locking structure of fan blade of wind farm, including fan protection shell and fan blade main shaft installed in the inside of fan protection shell, the inner top wall of fan protection shell is fixedly connected with fixed block, the bottom of fixed block is provided with mounting groove, the both sides in the inside of mounting groove are rotatably installed with first brake arm and second brake arm, the middle part of fan protection shell inner bottom wall is welded with limiting block, the both side surfaces of limiting block are provided with spring between first brake arm and second brake arm, the one side of fan protection shell inner bottom wall at first brake arm is provided with driving assembly for driving first brake arm and second brake arm to rotate, the inner wall of first brake arm and second brake arm is fixedly connected with friction block.

[0006] Further, the bottom end of first brake arm and second brake arm is respectively welded with first movable block and second movable block, one end of spring is connected to limiting block, and the other end is connected to first movable block or second movable block.

[0007] Furthermore, the drive assembly includes a fixed column fixed to the first movable block, a pulley mounted on one side of the second movable block via a bracket, and a motor mounted on the bottom wall inside the fan protective casing. The output end of the motor is rotatably connected to a wheel, and a pull rope is wound around the wheel. The pull rope connects the first movable block and the second movable block.

[0008] Furthermore, the first movable block, the second movable block, and the limiting block are all provided with rope holes, and one end of the pull rope passes through the rope hole, goes around the pulley, and is connected to the fixed column.

[0009] Furthermore, the inner wall of the rope hole is provided with a smooth, wear-resistant layer.

[0010] The advantages of this invention compared to existing technologies are as follows:

[0011] 1. By using a motor, a first brake arm, a second brake arm, and a pull rope, when the fan malfunctions and requires maintenance, the motor pulls the rope to lock the fan blades by friction between the first and second brake arms and the fan blade shaft, preventing the fan blades from rotating. This improves the reliability of the fan blade locking and ensures the safety of maintenance personnel.

[0012] 2. By using springs and friction blocks, the spring force can return the first and second brake arms to their original positions after maintenance, without affecting the normal operation of the fan. The friction blocks can increase the friction between them, thus achieving better braking of the fan blade shaft. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a front view structural diagram of the present invention;

[0015] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0016] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0017] As shown in the figure: 1. Fan protective shell; 2. Fan blade main shaft; 3. Fixed block; 4. First brake arm; 5. Second brake arm; 6. First movable block; 7. Second movable block; 8. Limit block; 9. Motor; 10. Rotary wheel; 11. Pull rope; 12. Fixed column; 13. Pulley; 14. Spring; 15. Friction block. Detailed Implementation

[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments; based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0019] Please refer to Figures 1 to 4 The utility model provides a buckle locking structure of fan blade of wind power plant fan, including fan protection shell 1 and fan blade main shaft 2, the inner top wall fixedly connected with fixed block 3 of fan protection shell 1, the bottom of fixed block 3 is equipped with the installation slot, one side inside the installation slot rotatably connected with first brake arm 4, the other side inside the installation slot rotatably connected with second brake arm 5, the bottom of first brake arm 4 is welded with first movable block 6, the bottom of second brake arm 5 is welded with second movable block 7, the middle part of fan protection shell 1 inner bottom wall is welded with limit block 8, one side of fan protection shell 1 inner bottom wall is installed with motor 9, the output of motor 9 rotatably connected with runner 10, the surface of runner 10 is movably connected with pull rope 11, the inner wall of first brake arm 4 and second brake arm 5 is fixedly connected with friction block 15.

[0020] In order to improve the reliability of fan blade locking, through the setting of motor 9, first brake arm 4, second brake arm 5 and pull rope 11, when the fan fails and needs to be repaired by maintenance personnel, the friction between first brake arm 4 and second brake arm 5 and fan blade main shaft 2 can lock the fan blade to prevent the rotation of the fan blade, so that the safety of the maintenance personnel is guaranteed,

[0021] First movable block 6 is provided with fixed column 12, one side of second movable block 7 is fixedly connected with support, pulley 13 is installed on the support, one end of pull rope 11 passes through rope hole and is connected to fixed column 12 after passing pulley 13, and then runner 10 can make first brake arm 4 and second brake arm 5 rotate towards fan blade main shaft 2 when winding pull rope 11.

[0022] In order to achieve better braking effect of fan blade rotation, through the setting of spring 14, the elastic force of spring 14 can make first brake arm 4 and second brake arm 5 return to the original position after maintenance, without affecting the normal work of the fan; the inner wall of rope hole is provided with a smooth wear-resistant layer, the smooth wear-resistant layer can reduce the friction between pull rope 11 and rope hole, increase its service life, the inner wall of first brake arm 4 and second brake arm 5 is fixedly connected with friction block 15, friction block 15 can increase the friction between them, the electrical components in this paper are connected with the main controller and 220V mains electricity, and the main controller can be a computer and other conventional known devices for control.

[0023] In specific use, the buckle locking structure of the fan blade of the wind farm wind turbine, when in use, through the setting of the motor 9, the first brake arm 4, the second brake arm 5 and the pull rope 11, when the wind turbine fails and needs to be repaired by the maintenance personnel, the friction between the first brake arm 4 and the second brake arm 5 and the fan main shaft 2 can lock the fan blade by the motor 9 pulling the pull rope 11, so as to prevent the rotation of the fan blade, improve the reliability of the locking of the fan blade, and thus the safety of the maintenance personnel is guaranteed, through the setting of the friction block 15, the friction block 15 can increase the friction between the first brake arm 4 and the second brake arm 5 and the fan main shaft 2, so as to better brake the fan main shaft, through the setting of the spring 14, the elastic force of the spring 14 can make the first brake arm 4 and the second brake arm 5 return to the original position after the maintenance is completed, without affecting the wind turbine.

[0024] The parts not disclosed in the utility model are all prior art, and the specific structure and working principle will not be described again.

[0025] It should be noted that, in this document, relationship terms such as first and second, and the like, are used only to differentiate one entity or action from another, and do not necessarily require or imply that these entities or actions are in any way mutually exclusive or in any way arranged in any sequence.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0027] The utility model and its implementation mode have been described above, and this description is not restrictive, and the embodiment shown in the drawings is only one of the embodiments of the utility model, and the actual structure is not limited thereto. In general, if those skilled in the art are inspired thereby, without departing from the creative purpose of the utility model, without creative design, similar structure modes and embodiments of the technical scheme are not included in the protection scope of the utility model.

Claims

1. A buckle locking structure of a fan blade of a wind turbine in a wind farm, comprising a fan protection shell (1) and a blade spindle (2) installed inside the fan protection shell (1), characterized in that: The inner top wall of the fan protection shell (1) is fixedly connected with a fixed block (3), the bottom of the fixed block (3) is provided with an installation slot, the first brake arm (4) and the second brake arm (5) are rotatably installed on the both sides of the installation slot, the middle of the inner bottom wall of the fan protection shell (1) is welded with a limiting block (8), the both sides of the limiting block (8) are provided with springs (14) between the first brake arm (4) and the second brake arm (5), the inner bottom wall of the fan protection shell (1) is provided with a driving assembly on one side of the first brake arm (4) for driving the first brake arm (4) and the second brake arm (5) to rotate, and the inner wall of the first brake arm (4) and the second brake arm (5) is fixedly connected with a friction block (15).

2. The buckle locking structure of a fan blade of a wind turbine in a wind farm according to claim 1, characterized in that: The bottom of the first brake arm (4) and the second brake arm (5) is welded with a first movable block (6) and a second movable block (7) respectively, one end of the spring (14) is connected to the limiting block (8), and the other end is connected to the first movable block (6) or the second movable block (7).

3. The buckle locking structure of a fan blade of a wind turbine in a wind farm according to claim 2, characterized in that: The driving assembly comprises a fixed column (12) fixedly connected to the first movable block (6), a pulley (13) installed on one side of the second movable block (7) through a support, and a motor (9) installed on the inner bottom wall of the fan protection shell (1), the output end of the motor (9) is rotatably connected with a rotating wheel (10), the rotating wheel (10) is wound with a pull rope (11), and the pull rope (11) is connected to the first movable block (6) and the second movable block (7).

4. The buckle locking structure of a fan blade of a wind turbine in a wind farm according to claim 3, characterized in that: The first movable block (6), the second movable block (7) and the limiting block (8) are all provided with rope holes, one end of the pull rope (11) passes through the rope hole and winds around the pulley (13) and is connected to the fixed column (12).

5. The buckle locking structure of a wind turbine fan blade of a wind farm according to claim 4, characterized in that: The inner wall of the rope hole is provided with a smooth wear-resistant layer.

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