Anti-typhoon blade self-locking device of wind driven generator

Abstract

The utility model relates to the technical field of wind power generation equipment, in particular to an anti-typhoon blade self-locking device of a wind driven generator, which comprises a fixed bottom plate and a blade root stopper, the front half part of the fixed bottom plate is in bolted connection with a push rod bracket through a first bolt, a support plate is welded on the inner side of the push rod bracket, and a standby fixed plate is welded on the rear side of the push rod bracket; the top of the push rod support is in bolted connection with a fixing steel plate through a second bolt, a first welding block is welded to the front side of the fixing steel plate, and the first welding block is in bolted connection with a first connecting plate through a third bolt. When the fan blade is locked, the electric push rod can be controlled to extend out downwards through the control box, the locking baffle can be driven to move downwards, meanwhile, the sliding plate is driven to slide downwards, the locking pin shaft moves downwards synchronously, the locking pin shaft located on the front side of the locking baffle can be clamped with the blade root check block, and the fan blade can be locked.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, in particular to a typhoon-resistant blade self-locking device for a wind power generator. Background Art

[0002] Wind farms located in the southeastern coastal areas of my country are hit by typhoons several times every year. When a typhoon comes, the wind turbines need to withstand huge external loads, and the blades must be reliably in the feathered state to minimize the load on the unit and ensure the safety of the unit. Therefore, typhoon-resistant units will be equipped with blade locking devices.

[0003] The typhoon-resistant blade locking devices of some existing wind turbines are manual devices. Before the typhoon comes, workers need to climb onto the wind turbines one by one, enter the hub, and manually lock the blades, which is time-consuming, labor-intensive, and labor-intensive. Therefore, in order to solve the above problem, a typhoon-resistant blade self-locking device for a wind turbine is proposed. Utility Model Content

[0004] The utility model aims to provide a typhoon-resistant blade self-locking device for a wind turbine, so as to solve the problem that the typhoon-resistant blade locking device of the wind turbine is a manual device, which requires workers to climb onto the wind turbine generator sets one by one and enter the hub to manually lock the blades before the typhoon comes, which is relatively time-consuming, labor-intensive and labor-intensive.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A typhoon-resistant blade self-locking device for a wind turbine comprises a fixed base plate and a blade root stopper, wherein the front half of the fixed base plate is connected to a push rod bracket by a first bolt, a support plate is welded on the inner side of the push rod bracket, a spare fixed plate is welded on the rear side of the push rod bracket, the top of the push rod bracket is connected to a fixed steel plate by a second bolt, a first welding block is welded on the front side of the fixed steel plate, the first welding block is connected to the first connecting plate by a third bolt, the first connecting plate is connected to a control box by a third bolt, a position encoder and an electric push rod are fixedly connected to the bottom of the control box, an electromagnetic switch is fixedly connected to the front side of the electric push rod, the electric push rod is connected to the second connecting plate by a fourth bolt, the second connecting plate is connected to a locking baffle by the fourth bolt, locking pins are welded on the front side and bottom of the locking baffle, the locking baffle is connected to the third connecting plate by a fifth bolt, the third connecting plate is connected to the second welding block by a fifth bolt, limiting plates are welded on the rear side of the second welding block, and sliding plates are welded on the left and right sides of the limiting plate.

[0007] Preferably, the front half and the rear half of the fixed base plate are respectively provided with three threaded holes, the first bolts are three, the push rod bracket is a "U"-shaped structure, the bottom of the push rod bracket is provided with three threaded holes, the top of the push rod bracket is provided with two threaded holes, the support plates are four, and the spare fixed plates are two.

[0008] Preferably, the second bolts are two, the fixing steel plate is provided with two threaded holes, the lower half of the first welding block is provided with threaded holes horizontally distributed in the front-to-back direction, the third bolts are provided in two groups, each group of the third bolts has two, the first connecting plates are two, the first connecting plates are provided with two threaded holes, the upper half of the control box is provided with threaded holes horizontally distributed in the front-to-back direction, the electric push rod is vertically distributed, the lower half of the electric push rod is provided with threaded holes horizontally distributed in the front-to-back direction, and the position encoder, electric push rod, and electromagnetic switch are all electrically connected to the control box.

[0009] Preferably, there are two groups of fourth bolts, each group has two fourth bolts, there are two second connecting plates, each of which is provided with two threaded holes, the locking baffle is a vertically distributed metal plate, the locking baffle is provided with five threaded holes, there are four locking pins, each of which is a rectangular metal block, and the locking pin located on the front side of the locking baffle is engaged with the blade root block.

[0010] Preferably, there are eight fifth bolts, the third connecting plate is a vertically distributed rectangular plate, the third connecting plate is provided with eight threaded holes, the second welding blocks are two, the second welding blocks are each provided with two threaded holes, the limiting plate is a vertically distributed metal plate, the sliding plates are two, the sliding plates are each vertically distributed rectangular blocks, the sliding plates are slidably connected to the push rod bracket, the front half of the blade root block is provided with three threaded grooves, and the rear side of the blade root block is provided with two rectangular snap-fitting grooves.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, through the control box, electric push rod, locking baffle and locking pin shaft that are set, the control box can receive the locking command from the main engine, and the control box can be used to control the electric push rod to extend downward, thereby driving the locking baffle to move downward, and at the same time driving the sliding plate to slide down, so that the locking pin shaft moves downward synchronously, and the locking pin shaft located on the front side of the locking baffle can engage with the blade root block to lock the fan blade. The device can remotely control the blade locking, which can effectively reduce the maintenance workload under typhoon conditions, reduce the difficulty of manual tower climbing operations, shorten the maintenance operation time, extend the power generation time of the unit, and increase the power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is an exploded view of the overall structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the installation structure of the push rod bracket of the utility model;

[0016] Figure 4 This is a schematic diagram of the installation structure of the self-locking mechanism of the utility model;

[0017] Figure 5 This is a schematic diagram of the installation structure of the electric push rod of the utility model;

[0018] Figure 6 This is a schematic diagram of the installation structure of the locking block of the utility model.

[0019] In the figure: 1. fixed base plate; 2. first bolt; 3. push rod bracket; 4. support plate; 5. spare fixed plate; 6. second bolt; 7. fixed steel plate; 8. first welding block; 9. third bolt; 10. first connecting plate; 11. control box; 12. position encoder; 13. electric push rod; 14. electromagnetic switch; 15. fourth bolt; 16. second connecting plate; 17. locking baffle; 18. locking pin; 19. fifth bolt; 20. third connecting plate; 21. second welding block; 22. limit plate; 23. sliding plate; 24. blade root block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0022] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0023] See also Figure 1-6 , the utility model provides a technical solution:

[0024] A typhoon-resistant blade self-locking device for a wind turbine comprises a fixed base plate 1 and a blade root stopper 24, wherein the front half of the fixed base plate 1 is bolted to a push rod bracket 3 via a first bolt 2, a support plate 4 is welded to the inner side of the push rod bracket 3, a spare fixed plate 5 is welded to the rear side of the push rod bracket 3, the top of the push rod bracket 3 is bolted to a fixed steel plate 7 via a second bolt 6, a first welding block 8 is welded to the front side of the fixed steel plate 7, the first welding block 8 is bolted to a first connecting plate 10 via a third bolt 9, the first connecting plate 10 is bolted to a control box 11 via the third bolt 9, and the bottom of the control box 11 is fixedly connected to a position code The electric push rod 13 is fixedly connected to the electromagnetic switch 14 on the front side, the electric push rod 13 is bolted to the second connecting plate 16 through the fourth bolt 15, the second connecting plate 16 is bolted to the locking baffle 17 through the fourth bolt 15, the front side and bottom of the locking baffle 17 are welded with locking pins 18, the locking baffle 17 is bolted to the third connecting plate 20 through the fifth bolt 19, the third connecting plate 20 is bolted to the second welding block 21 through the fifth bolt 19, the rear side of the second welding block 21 is welded with a limiting plate 22, and the left and right sides of the limiting plate 22 are welded with sliding plates 23.

[0025] The front and rear halves of the fixed base plate 1 are respectively provided with three threaded holes, the first bolts 2 have three, the push rod bracket 3 is a "U"-shaped structure, the bottom of the push rod bracket 3 is provided with three threaded holes, the top of the push rod bracket 3 is provided with two threaded holes, the support plate 4 has four, and the spare fixing plate 5 has two, and the fixing direction of the push rod bracket 3 can be adjusted; there are two second bolts 6, and the fixing steel plate 7 is provided with two threaded holes. The lower half of the first welding block 8 is provided with threaded holes horizontally distributed in the front and rear directions, there are two groups of third bolts 9, each group of the third bolts 9 has two, the first connecting plate 10 has two, and the first connecting plate 10 is provided with two threaded holes, the upper half of the control box 11 is provided with threaded holes horizontally distributed in the front and rear directions, the electric push rod 13 is vertically distributed, and the lower half of the electric push rod 13 is provided with threaded holes horizontally distributed in the front and rear directions. The position encoder 12, the electric push rod 13, and the electromagnetic switch 14 are all electrically connected to the control box 11, and the electric push rod 13 can be controlled by the control box 11; the fourth There are two groups of bolts 15, each group of the fourth bolts 15 has two, the second connecting plate 16 has two, and the second connecting plate 16 is provided with two threaded holes. The locking baffle 17 is a vertically distributed metal plate, and the locking baffle 17 is provided with five threaded holes. There are four locking pins 18, and the locking pins 18 are all rectangular metal blocks. The locking pins 18 located on the front side of the locking baffle 17 are engaged with the blade root block 24, which can lock the fan blades; there are eight fifth bolts 19, the third connecting plate 20 is a vertically distributed rectangular plate, and the third connecting plate 20 is provided with eight threaded holes, the second welding block 21 has two, and the second welding block 21 is provided with two threaded holes, the limiting plate 22 is a vertically distributed metal plate, and the sliding plates 23 have two, and the sliding plates 23 are all vertically distributed rectangular blocks. The sliding plate 23 is slidably connected to the push rod bracket 3, and the front half of the blade root block 24 is provided with three threaded grooves, and the rear side of the blade root block 24 is provided with two rectangular engaging grooves, which can cooperate with the locking pin 18 to stably fix the fan blades.

[0026] Working process: Before use, fix the blade root block 24 and the pitch bearing with the connecting bolts, fix the push rod bracket 3 and the wheel hub with the connecting bolts, then turn on the power, and control the electric push rod 13 through the control box 11. The position encoder 12 and the electromagnetic switch 14 can both feedback the position detection signal to ensure that the failure of any feedback signal does not affect the operation. The control box 11 transmits the position detection signal to the tower base through two redundant communications, wireless transmission and power carrier, and then transmits it to the control room through the wind turbine ring network optical fiber. The locking and unlocking of the electric blade lock can be controlled by the host in the control room. When the control box 11 receives the locking command from the host, it can control the electric push rod 13 to extend downward, which can drive the locking baffle 17 to move downward, and at the same time drive the sliding plate 23 to slide down, so that the locking pin 18 moves downward synchronously, and the locking signal located on the front side of the locking baffle 17 The pin shaft 18 can be engaged with the blade root stopper 24 to lock the fan blade. When the control box 11 receives the unlocking command from the host, it can control the electric push rod 13 to retract upward, so that the locking pin shaft 18 moves up and resets, and the fan blade can be unlocked. If the space around the hub is limited, the spare fixing plate 5 and the fixed base plate 1 can be bolted together by connecting bolts according to actual conditions, so that the push rod bracket 3 and the components fixedly connected thereto are all distributed horizontally. When this connection method is adopted, the control box 11 can control the electric push rod 13 to extend forward, so that the locking pin shaft 18 located at the bottom of the locking baffle 17 is engaged with the blade root stopper 24. The device can remotely control the blade locking, which can effectively reduce the maintenance workload under typhoon conditions, reduce the difficulty of manual tower climbing operations, shorten the maintenance operation time, extend the power generation time of the unit, and increase the power generation.

[0027] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A typhoon-resistant blade self-locking device for a wind turbine, comprising a fixed base plate (1) and a blade root stopper (24), characterized in that: The front half of the fixed base plate (1) is bolted to the push rod bracket (3) via a first bolt (2); a support plate (4) is welded to the inner side of the push rod bracket (3); a spare fixed plate (5) is welded to the rear side of the push rod bracket (3); the top of the push rod bracket (3) is bolted to a fixed steel plate (7) via a second bolt (6); a first welding block (8) is welded to the front side of the fixed steel plate (7); the first welding block (8) is bolted to a first connecting plate (10) via a third bolt (9); the first connecting plate (10) is bolted to a control box (11) via the third bolt (9); the bottom of the control box (11) is fixedly connected to a position encoder (12) and an electric push rod (13); the electric The front side of the push rod (13) is fixedly connected to the electromagnetic switch (14); the electric push rod (13) is bolted to the second connecting plate (16) through a fourth bolt (15); the second connecting plate (16) is bolted to the locking baffle (17) through the fourth bolt (15); the front side surface and the bottom surface of the locking baffle (17) are both welded with a locking pin shaft (18); the locking baffle (17) is bolted to the third connecting plate (20) through a fifth bolt (19); the third connecting plate (20) is bolted to the second welding block (21) through the fifth bolt (19); the rear side of the second welding block (21) is welded with a limiting plate (22); and the left and right sides of the limiting plate (22) are both welded with sliding plates (23).

2. The typhoon-resistant blade self-locking device of a wind turbine according to claim 1, characterized in that: The front and rear halves of the fixed base plate (1) are respectively provided with three threaded holes, the first bolts (2) are provided with three, the push rod bracket (3) is a "U"-shaped structure, the bottom of the push rod bracket (3) is provided with three threaded holes, the top of the push rod bracket (3) is provided with two threaded holes, the support plate (4) is provided with four, and the spare fixing plates (5) are provided with two.

3. The typhoon-resistant blade self-locking device of a wind turbine according to claim 1, characterized in that: There are two second bolts (6), the fixing steel plate (7) is provided with two threaded holes, the lower part of the first welding block (8) is provided with threaded holes horizontally distributed in the front-to-back direction, there are two groups of third bolts (9), each group of the third bolts (9) has two, there are two first connecting plates (10), each of the first connecting plates (10) is provided with two threaded holes, the upper part of the control box (11) is provided with threaded holes horizontally distributed in the front-to-back direction, the electric push rod (13) is vertically distributed, and the lower part of the electric push rod (13) is provided with threaded holes horizontally distributed in the front-to-back direction, and the position encoder (12), the electric push rod (13), and the electromagnetic switch (14) are all electrically connected to the control box (11).

4. The typhoon-resistant blade self-locking device of a wind turbine according to claim 1, characterized in that: There are two groups of the fourth bolts (15), each group of the fourth bolts (15) has two, there are two second connecting plates (16), each of the second connecting plates (16) is provided with two threaded holes, the locking baffle (17) is a vertically distributed metal plate, the locking baffle (17) is provided with five threaded holes, there are four locking pin shafts (18), each of the locking pin shafts (18) is a rectangular metal block, and the locking pin shaft (18) located on the front side of the locking baffle (17) is engaged with the blade root stopper (24).

5. The typhoon-resistant blade self-locking device of a wind turbine according to claim 1, characterized in that: There are eight fifth bolts (19), the third connecting plate (20) is a vertically distributed rectangular plate, the third connecting plate (20) is provided with eight threaded holes, the second welding blocks (21) are two, the second welding blocks (21) are each provided with two threaded holes, the limiting plate (22) is a vertically distributed metal plate, there are two sliding plates (23), the sliding plates (23) are each vertically distributed rectangular blocks, the sliding plates (23) are slidably connected to the push rod bracket (3), the front half of the blade root stopper (24) is provided with three threaded grooves, and the rear side of the blade root stopper (24) is provided with two rectangular snap-fitting grooves.

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