Blade locking device of wind power typhoon unit

Abstract

The invention relates to the technical field of wind power blade locking, in particular to a blade locking device of a wind power draught fan unit, which comprises a locking disc and a connecting ring, sliding grooves are formed in the periphery of the outer side of the locking disc and are fixedly connected with a first traction steel rope, and the connecting groove is formed in the locking disc and is fixedly connected with a second traction steel rope. The end, away from the connecting rod, of the first traction steel rope penetrates through the guide wheel and then extends into the connecting cavity, two sets of connecting lugs are fixedly connected to the inner side of the connecting ring, locking grooves and connecting holes are formed in the connecting lugs correspondingly, and the end, away from the first traction steel rope, of the connecting rod is provided with a locking disc and movably provided with a positioning plate. A connecting ring and a unit blade are installed together, a first traction steel rope and a second traction steel rope are wound through rotation of a take-up barrel, four sets of positioning plates are driven by the first traction steel rope to be tightened synchronously, the four sets of positioning plates which are tightened slowly can position the moving unit blade again, and the installing and locking efficiency is improved; and meanwhile, the working intensity of operators is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine blade locking, and in particular to a blade locking device for a wind turbine set. Background Art

[0002] At present, my country's wind energy industry is in a stage of rapid development. With the continuous increase in unit capacity, the weight of wind turbine components is getting heavier, the installation height is getting higher, and the installation difficulty is increasing. The living environment of wind turbines is harsh. In order to extend the service life of the units, regular maintenance and overhaul are particularly important. In order to ensure the safety of maintenance personnel, in addition to requiring personnel to correctly use work equipment and all protective equipment, the safety design of wind turbines is also crucial.

[0003] For example, the Chinese patent with the announcement number CN109505733A discloses a blade locking device applied to a wind-driven blower unit, which includes a locking disk and an electric locking mechanism. The locking disk is installed between the blade bearing and the blade root of the wind-driven blower unit. The main body of the locking disk is annular, and the inner edge of the annular ring is provided with a protrusion extending toward the center of the circle; a shaft sleeve is provided on the protrusion; the electric locking mechanism includes a guide seat installed on the hub belly plate of the wind-driven blower unit and an electric push rod arranged in the guide seat.

[0004] However, the above scheme has the following shortcomings: although the mutual cooperation between the electric push rod and the locking structure in the above patent reduces the influence of locking failure or extreme working conditions on the blade bearing and the blade root body, in the process of locking the blade, the blade needs to be hoisted first, and then the operator continuously rotates and adjusts the blade so that the blade can reach the correct locking angle. When the blade is hoisted, the blade will swing back and forth in windy weather, making it impossible for the mounting screw in the blade to quickly cooperate with the mounting hole in the unit hub, making the entire installation and locking process time-consuming and labor-intensive, and increasing the workload of the operator. For this reason, we have introduced a blade locking device for a wind turbine unit. Summary of the invention

[0005] The object of the present invention is to provide a blade locking device for a wind turbine unit to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A blade locking device for a wind turbine unit comprises a locking plate and a connecting ring, wherein sliding grooves are provided on all sides of the outer side of the locking plate, a connecting rod is movably connected in the sliding groove, four groups of opposite surfaces of the connecting rods are extended into the connecting grooves, and are fixedly connected with a first traction steel rope, the connecting groove is provided in the locking plate, the first traction steel rope is away from one end of the connecting rod and then passes through a guide wheel and extends into a connecting cavity, and is wound in a first wire-receiving groove, the first wire-receiving groove is provided in a wire-receiving drum, the wire-receiving drum is movably connected in the connecting cavity, the guide wheel is fixedly connected in the connecting groove, the connecting cavity is provided in the locking plate, two groups of hooks are provided in the connecting groove, and the hooks are fixedly connected with a second traction steel rope;

[0008] The second traction steel rope extends into the connecting cavity away from the hook end and is wound in the second wire taking-up groove. A locking rod is fixedly connected in the connecting groove, and a limiting groove is provided in the locking rod. A support rod is slidably connected in the limiting groove. T-shaped rods are movably connected in the upper and lower ends of the support rod. Two groups of connecting ears are fixedly connected to the inner side of the connecting ring, and locking grooves and connecting holes are respectively provided in the connecting ears. The connecting rod is locked to a disk at one end away from the first traction steel rope, and a positioning plate is movably installed.

[0009] Preferably, sliders are fixedly connected on both sides of the connecting rod, the sliders are slidably connected in the guide grooves, the guide grooves are opened in the slide grooves, a first spring is fixedly connected in the guide grooves, and the other end of the first spring is fixedly connected to the sliders.

[0010] Preferably, the upper and lower ends of the support rod are provided with a clearance groove, the T-shaped rod is slidably connected in the clearance groove, a second spring is fixedly connected in the clearance groove, the other end of the second spring is fixedly connected to the T-shaped rod, a trigger switch is fixedly connected to the end of the clearance groove away from the T-shaped rod, an output end of an electric push rod is fixedly connected to one side of the support rod, the electric push rod is fixedly connected in the locking rod, and the T-shaped rod is arranged in an inclined shape away from the end of the support rod.

[0011] Preferably, several groups of first through holes are opened in the locking disk, several groups of second through holes are opened in the connecting ring, the first through holes correspond to the second through holes, the upper end of the wire take-up reel is fixedly connected to the output end of the motor, the motor is fixedly connected in the locking disk, and several groups of rollers are movably connected in the relative surfaces of the four groups of positioning plates.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: by installing the connecting ring and the unit blades together, the hook is clamped into the connecting hole after the installation is completed, the first traction steel rope and the second traction steel rope are wound up by the rotation of the take-up drum, and the second traction steel rope pulls the unit blades through the hook. At the same time, during the pulling process, the unit blades will rotate to the correct installation position, and the four groups of positioning plates are driven to be tightened synchronously by the first traction steel rope. The four groups of slowly tightened positioning plates can re-position the moving unit blades to ensure that the screw can enter the first through hole, and the locking rod can lock the connecting ring, thereby improving the efficiency of installation and locking, and reducing the workload of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of the locking disk of the present invention;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the connection relationship between the limit groove and the support rod of the present invention;

[0015] Figure 3 It is a schematic diagram of the main view of the locking disk of the present invention;

[0016] Figure 4 This is a schematic diagram of the main structure of the take-up reel of the present invention;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the connecting ring of the present invention;

[0018] Figure 6 It is a cross-sectional structural schematic diagram of the connection relationship between the connecting ring and the unit blades of the present invention;

[0019] Figure 7 It is a schematic diagram of the main structure of the present invention.

[0020] In the figure: 1. locking plate; 2. wire take-up drum; 3. second traction steel rope; 4. first wire take-up groove; 5. motor; 6. hook; 7. guide wheel; 8. first traction steel rope; 9. connecting groove; 10. first spring; 11. slider; 12. connecting rod; 13. guide groove; 14. connecting ring; 15. second through hole; 16. connecting ear; 17. locking groove; 18. connecting hole; 19. first through hole; 20. second wire take-up groove; 21. connecting cavity; 22. unit blade; 23. positioning plate; 24. roller; 25. locking rod; 26. electric push rod; 27. limit groove; 28. give way groove; 29. ​​support rod; 30. slide groove; 31. trigger switch; 32. second spring; 33. T-bar. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 -7. The present invention provides a technical solution:

[0023] Embodiment 1:

[0024] A blade locking device for a wind turbine unit comprises a locking plate 1 and a connecting ring 14. Slide grooves 30 are provided on all sides of the outer side of the locking plate 1. A connecting rod 12 is movably connected in the slide groove 30. The opposite surfaces of the four groups of connecting rods 12 are all extended into the connecting groove 9 and are fixedly connected with the first traction steel rope 8. The four groups of first traction steel ropes 8 will drive the corresponding connecting rods 12 to move synchronously during the winding process. The movement of the connecting rods 12 drives the positioning plates 23 installed therewith to move. The synchronous tightening of the four groups of positioning plates 23 will be adjusted by the position of the unit blades 22. The connecting groove 9 is provided in the locking plate 1. The first traction steel rope 8 is away from the end of the connecting rod 12 and then extends into the connecting cavity 21 after passing through the guide wheel 7, and is wound in the first take-up groove 4. The first take-up groove 4 is provided in the take-up drum 2. The take-up drum 2 is movably connected to the connecting cavity 21. The guide wheel 7 is fixedly connected to the connecting groove 9, and the guide wheel 7 can guide the first traction steel rope 8.

[0025] The connecting cavity 21 is opened in the locking disk 1, and two groups of hooks 6 are arranged in the connecting groove 9. The hooks 6 are fixedly connected with the second traction steel rope 3. The two groups of hooks 6 in the locking disk 1 are pulled out and hung in the connecting hole 18 in the connecting ring 14. The motor 5 is started to control the take-up drum 2 to rotate in the opposite direction to reel in the second traction steel rope 3. In the process of the two groups of second traction steel ropes 3 being reeled in, since the hooks 6 are clamped in the connecting hole 18, the hoisted unit blades 22 will be continuously pulled into the position of the locking disk 1, and the unit blades 22 will automatically rotate to the correct angle when being pulled by the two groups of second traction steel ropes 3, so that the several groups of screws in the unit blades 22 correspond to the several groups of first through holes 19, and the second traction steel rope 3 extends into the connecting cavity 21 away from the end of the hook 6 and is wound in the second take-up groove 20. A locking rod 25 is fixedly connected in the connecting groove 9;

[0026] A limit groove 27 is provided in the lock rod 25, and a support rod 29 is slidably connected in the limit groove 27. T-shaped rods 33 are movably connected in the upper and lower ends of the support rod 29. Two sets of connecting ears 16 are fixedly connected to the inner side of the connecting ring 14. The connecting ears 16 are respectively provided with a lock groove 17 and a connecting hole 18. When the lock rod 25 enters the lock groove 17, the T-shaped rods 33 arranged at the upper and lower ends of the support rod 29 are squeezed into the make way groove 28. When the lock groove 17 in the connecting ear 16 passes through the support rod 2 9, under the elastic force of the second spring 32, the T-shaped rod 33 is ejected from the make way slot 28, and the pressing of the trigger switch 31 is cancelled. At this time, the trigger switch 31 is turned on and controls the electric push rod 26 to start. The start of the electric push rod 26 drives the support rod 29 to move to the right along the limit slot 27. The two groups of extended T-shaped rods 33 can lock and limit the connecting ear 16. The connecting rod 12 is away from the locking disk 1 at one end of the first traction steel rope 8, and the positioning plate 23 is movably installed.

[0027] Embodiment 2:

[0028] On the basis of Example 1, in order to allow the T-shaped rod 33 to rebound to its original position after being squeezed into the give way groove 28, sliders 11 are fixedly connected on both sides of the connecting rod 12, and the sliders 11 are slidably connected to the guide groove 13, and the guide groove 13 is opened in the slide groove 30. A first spring 10 is fixedly connected in the guide groove 13, and the other end of the first spring 10 is fixedly connected to the slider 11. When the first traction steel rope 8 is released by the take-up drum 2, under the elastic force of the first spring 10, the sliders connected on both sides of the connecting rod 12 The block 11 moves along the guide groove 13, and the movement of the slider 11 drives the connecting rod 12 to move synchronously. The upper and lower ends of the support rod 29 are provided with a clearance groove 28, and the T-shaped rod 33 is slidably connected in the clearance groove 28. A second spring 32 is fixedly connected in the clearance groove 28, and the other end of the second spring 32 is fixedly connected to the T-shaped rod 33. The end of the clearance groove 28 away from the T-shaped rod 33 is fixedly connected to the trigger switch 31, and one side of the support rod 29 is fixedly connected to the output end of the electric push rod 26, and the electric push rod 26 is fixedly connected to the lock rod 25;

[0029] The T-shaped rod 33 is arranged in an inclined shape away from one end of the support rod 29, the trigger switch 31 is turned on and controls the electric push rod 26 to start, and the electric push rod 26 starts to drive the support rod 29 to move to the right along the limit groove 27, and the two groups of extended T-shaped rods 33 lock and limit the connecting ear 16. At this time, the connecting ring 14 and the locking disk 1 are locked together, and several groups of first through holes 19 are opened in the locking disk 1, and several groups of second through holes 15 are opened in the connecting ring 14. The first through holes 19 correspond to the second through holes 15. The upper end of the take-up reel 2 is fixedly connected to the output end of the motor 5, and the motor 5 is fixedly connected to the locking disk 1. Several groups of rollers 24 are movably connected to the opposite surfaces of the four groups of positioning plates 23, and several groups of rollers 24 can play a guiding and guiding role when the positioning plates 23 contact the unit blades 22.

[0030] Working principle: when in use, the plurality of screws in the blades 22 of the unit are passed through the plurality of second through holes 15 in sequence, and are fastened by external nuts, so that the connecting ring 14 is installed with the blades 22 of the unit, and the locking disk 1 is welded and fixed with the hub of the wind turbine. When the blades 22 of the unit need to be locked with the locking disk 1, the motor 5 is turned on to drive the take-up drum 2 to start rotating. During the rotation process, the take-up drum 2 pays out the second traction steel rope 3 wound in the second take-up groove 20 and the first traction steel rope 8 in the first take-up groove 4. When the first traction steel rope 8 is released, the connecting rod 12 moves upward along the slide groove 30 under the elastic force of the first spring 10. When the connecting rod 12 is fully extended, the positioning plate 23 is installed together with the connecting rod 12 through the screw. At the same time, when the unit blade 22 is hoisted to a position close to the locking disk 1, the two groups of hooks 6 in the locking disk 1 are pulled out and hung into the connecting holes 18 in the connecting ring 14. At this time, the motor 5 is started to control the take-up drum 2 to rotate in the opposite direction, and the take-up drum 2 rotates to rewind the first traction steel rope 8 and the second traction steel rope 3;

[0031] During the process of the two groups of second traction steel ropes 3 being wound up, since the hook 6 is clamped in the connecting hole 18, the hoisted unit blade 22 will be continuously pulled into the position of the locking plate 1, and the unit blade 22 will automatically rotate to the correct angle when being pulled by the two groups of second traction steel ropes 3, so that the several groups of screw rods in the unit blade 22 correspond to the several groups of first through holes 19. At the same time, the four groups of first traction steel ropes 8 will drive the corresponding connecting rods 12 to move synchronously during the winding process, and the movement of the connecting rod 12 drives the positioning plate 23 installed therewith to move. The synchronous tightening of the four groups of positioning plates 23 will be adjusted by the position of the unit blade 22. As the connecting ring 14 drives the unit blade 22 to move continuously, the several groups of screw rods in the unit blade 22 enter the first through hole 19.

[0032] When the locking rod 25 enters the locking groove 17, the T-shaped rod 33 arranged at the upper and lower ends of the support rod 29 is squeezed into the yield groove 28. At this time, the second spring 32 is compressed, and the trigger switch 31 is pressed downward and is in a waiting state. When the locking groove 17 in the connecting ear 16 passes the support rod 29, under the elastic force of the second spring 32, the T-shaped rod 33 is ejected from the yield groove 28 and the pressing of the trigger switch 31 is cancelled. At this time, the trigger switch 31 is turned on and controls the electric push rod 26 to start. The start of the electric push rod 26 drives the support rod 29 to move to the right along the limit groove 27. The two groups of extended T-shaped rods 33 lock and limit the connecting ear 16. At this time, the connecting ring 14 and the locking disk 1 are locked together, and the nut is screwed together with the screw passing through the first through hole 19, so that the unit blade 22 and the locking disk 1 are fixed together.

[0033] 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 blade locking device for a wind turbine unit, comprising a locking plate and a connecting ring, characterized in that: The locking plate is provided with sliding grooves on all sides of the outer side, and a connecting rod is movably connected in the sliding groove. The opposite surfaces of the four groups of connecting rods are extended into the connecting grooves and are fixedly connected to the first traction steel rope. The connecting groove is provided in the locking plate. The first traction steel rope is away from one end of the connecting rod and passes through the guide wheel and then extends into the connecting cavity and is wound in the first wire-receiving groove. The first wire-receiving groove is provided in the wire-receiving drum. The wire-receiving drum is movably connected in the connecting cavity. The guide wheel is fixedly connected in the connecting groove. The connecting cavity is provided in the locking plate. Two groups of hooks are provided in the connecting groove, and the hooks are fixedly connected to the second traction steel rope. The second traction steel rope extends into the connecting cavity away from the hook end and is wound in the second wire taking-up groove. A locking rod is fixedly connected in the connecting groove, and a limiting groove is provided in the locking rod. A support rod is slidably connected in the limiting groove. T-shaped rods are movably connected in the upper and lower ends of the support rod. Two groups of connecting ears are fixedly connected to the inner side of the connecting ring, and locking grooves and connecting holes are respectively provided in the connecting ears. The connecting rod is locked to a disk at one end away from the first traction steel rope, and a positioning plate is movably installed.

2. The blade locking device of a wind turbine unit according to claim 1, characterized in that: Slide blocks are fixedly connected on both sides of the connecting rod. The slide blocks are slidably connected in the guide grooves. The guide grooves are arranged in the slide grooves. A first spring is fixedly connected in the guide grooves. The other end of the first spring is fixedly connected to the slide blocks.

3. The blade locking device of a wind turbine unit according to claim 1, characterized in that: The upper and lower ends of the support rod are both provided with clearance grooves, the T-shaped rod is slidably connected in the clearance groove, a second spring is fixedly connected in the clearance groove, the other end of the second spring is fixedly connected to the T-shaped rod, a trigger switch is fixedly connected to the end of the clearance groove away from the T-shaped rod, an output end of an electric push rod is fixedly connected to one side of the support rod, the electric push rod is fixedly connected in the locking rod, and the T-shaped rod is arranged in an inclined shape at the end away from the support rod.

4. The blade locking device of a wind turbine unit according to claim 1, characterized in that: A plurality of first through holes are provided in the locking disk, a plurality of second through holes are provided in the connecting ring, the first through holes correspond to the second through holes, the upper end of the wire take-up drum is fixedly connected to the output end of the motor, the motor is fixedly connected to the locking disk, and a plurality of rollers are movably connected to the opposite surfaces of the four groups of positioning plates.

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