Wind turbine generator blade fixing device

Abstract

The utility model relates to the technical field of wind power engineering, in particular to a wind turbine generator blade fixing device which comprises a rack, a carrying seat is connected to the inner side of the rack in a sliding mode, and a driving assembly used for driving the carrying seat to move up and down is further installed above the rack. Wherein a mounting and rotating mechanism is mounted on the carrying seat and is used for mounting blades and driving the blades to rotate; at least one protection assembly is further installed on the lower portion of the inner side of the machine frame, the height of the carrying base is adjusted through the driving assembly so that the height of the blades can be adjusted, and then the circumferential angle of the blades can be adjusted through the installation and rotation mechanism. And in addition, a protection plate is designed to make contact with a protection assembly, so that when mechanical drive of the carrying base is damaged and falls, the protection assembly achieves impact protection on the carrying base through bearing protection on the protection plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power engineering technical field especially relates to a kind of wind turbine blade fixing device. BACKGROUND

[0002] As an important form of clean energy, the efficiency and reliability of wind power generation are attracting more and more attention. The blade of the wind turbine is a key component for energy conversion, and the quality of its design and manufacture directly affects the performance of the entire system. It is crucial to ensure the structural stability, reliability and safety of the blade during storage, processing and maintenance of the wind turbine blade.

[0003] The existing wind power blade fixing technology usually adopts the method of connecting the support and the middle part of the blade root by bolts. This fixing method also supports the height adjustment of the blade. For example, a wind power blade support device is disclosed in Chinese Patent No. CN222010406U.

[0004] However, during the maintenance work such as painting and grinding of the blade, the blade often needs to be adjusted at different angles to facilitate the work. Obviously, the traditional fixing support has certain adaptation drawbacks, which leads to inconvenience during the maintenance of the blade and increases the difficulty and time cost of the work. UTILITY MODEL CONTENT

[0005] The utility model aims to solve the problem of the traditional fixing support in the prior art, which only supports the height adjustment of the blade and cannot realize the circumferential angle adjustment. Therefore, a wind turbine blade fixing device is proposed.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A wind turbine blade fixing device is designed, which includes a rack, a carrier is slidingly connected to the inner side of the rack, and a driving assembly for driving the carrier to move up and down is installed above the rack;

[0008] An installation and rotation mechanism is installed on the carrier, which is used to install and rotate the blade;

[0009] At least one protection assembly is installed below the inner side of the rack, and a protection plate opposite to the protection assembly is fixed to the bottom of the carrier.

[0010] Further, the driving assembly includes two threaded rods rotatingly connected to the inner side of the rack, and two threaded seats are fixedly installed at the front end of the carrier, and the threaded seats and the threaded rods are screw-connected.

[0011] Further, the driving assembly further comprises:

[0012] The lifting motor installed on the side of the frame, the shaft end of the lifting motor is fixedly installed with a worm, and the top end of each of the two threaded rods is fixedly installed with a worm wheel engaged with the worm.

[0013] Further, the mounting and rotating mechanism comprises a speed reducer motor mounted on the carrier, and a connecting seat is fixedly installed on the output end of the speed reducer motor, and the connecting seat has a flange surface matched with the blade.

[0014] Further, the back end of the connecting seat has a pipe portion, the pipe portion is sleeved on the output shaft of the speed reducer motor, a positioning glass bead is embedded outside the output shaft of the speed reducer motor, and a positioning hole matched with the extension end of the positioning glass bead is formed in the outer side of the pipe portion.

[0015] Further, the protection assembly comprises a sleeve fixedly installed on the inner side of the frame, and a guide rod is movably inserted into the inner side of the sleeve.

[0016] The bottom end of the guide rod is fixedly installed with a piston, the side of the sleeve is provided with an air hole, and the top end of the guide rod and the sleeve are connected with a spring.

[0017] The wind turbine blade fixing device has the advantages that: the height of the carrier is adjusted by the driving assembly to adjust the height of the blade, the circumferential angle of the blade is adjusted by the mounting and rotating mechanism to improve the convenience and comprehensiveness of the blade processing operation, the protection plate and the protection assembly are designed to contact, and when the mechanical drive of the carrier is damaged and falls, the protection assembly protects the protection plate to protect the carrier from impact, thereby reducing the shaking damage of the blade. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the utility model;

[0019] Figure 2 It is a mounting and rotating mechanism structure schematic view of the utility model;

[0020] Figure 3 It is a positioning glass bead structure schematic view of the utility model;

[0021] Figure 4 It is a protection assembly structure schematic view of the utility model.

[0022] In the figure: 1, frame; 2, carrier; 3, drive assembly; 31, threaded rod; 32, threaded seat; 33, lifting motor; 34, worm; 35, worm gear; 4, mounting and rotating mechanism; 41, speed reducer motor; 42, connecting seat; 421, flange surface; 422, pipe part; 423, positioning hole; 43, positioning glass bead; 5, protection assembly; 51, sleeve; 52, guide rod; 53, piston; 54, air hole; 55, spring; 6, protection plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0024] Reference Figures 1-4 For an embodiment of the utility model, it discloses a kind of wind turbine blade fixing device, specifically the fixing device includes frame 1, carrier 2 is slidably connected to the inside of the frame 1, as preferred, the carrier 2 in the embodiment is slidably connected to the inside of the frame 1 by the connecting mode of guide rail and sliding block, the sliding is up and down sliding along height direction, the frame 1 is also provided with drive assembly 3 for driving the carrier 2 to move up and down above it;

[0025] Wherein, mounting and rotating mechanism 4 is installed on the carrier 2, and the mounting and rotating mechanism 4 is used to install the blade and drive it to rotate.

[0026] At least one protection assembly 5 is also installed below the inside of the frame 1, and the bottom of the carrier 2 is fixed with a protection plate 6 opposite to the protection assembly 5, i.e. in the embodiment, the protection plate 6 and the protection assembly 5 are contacted by installation, so that when the mechanical drive of the carrier 2 is damaged and falls, the protection assembly 5 protects the protection plate 6 by bearing, so as to protect the impact of the carrier 2, thereby reducing the shaking damage of the blade.

[0027] In some embodiments, the drive assembly 3 in the utility model comprises two threaded rods 31 rotatably connected to the inside of the frame 1, and two threaded seats 32 are fixedly installed at the front end of the carrier 2, and the threaded seats 32 are threadedly connected with the threaded rods 31.

[0028] Further, the drive assembly 3 in the embodiment further comprises:

[0029] The lifting motor 33 is installed on the side edge of the frame 1, the worm 34 is fixedly installed on the shaft end of the lifting motor 33, and the top end of each of the two threaded rods 31 is fixedly provided with the worm gear 35 engaged with the worm 34.

[0030] That is, in the embodiment, the worm 34 is driven to rotate by the lifting motor 33, and the two worm gears 35 are driven by the worm 34 to control the synchronous rotation of the two threaded rods 31, and when the two threaded rods 31 rotate synchronously, the driving force is driven by the meshing of the threaded seat 32 to achieve the up-down movement control of the carrier 2.

[0031] In addition, in the embodiment, the transmission mode of the worm 34 and the worm gear 35 is adopted, which is to realize one-way self-locking by the characteristics of the worm 34 and the worm gear 35, so as to reduce the stress of the lifting motor 33, and the self-locking capability can also prevent the threaded rod 31 from reversing, so as to achieve the preliminary protection capability of the carrier 2.

[0032] In some embodiments, the mounting and rotating mechanism 4 in the utility model comprises a speed reducer 41 mounted on the carrier 2, and a connecting seat 42 is fixedly installed on the output end of the speed reducer 41.

[0033] Specifically, first, the rack 1 of the device is fixed on the ground by expansion bolts and other fasteners, then the flange end of the blade is fixed on the flange surface 421 of the connecting seat 42 by bolts, and the height of the blade can be adjusted by the driving assembly 3 during the painting or grinding operation, so as to realize the height adjustment of the blade, and the circumferential angle of the blade can be adjusted by the mounting and rotating mechanism 4, so as to improve the convenience and comprehensiveness of the blade processing operation.

[0034] Of course, considering that the sizes of different blade flange ends may be different, the back end of the connecting seat 42 has a pipe portion 422 in the embodiment, the pipe portion 422 is sleeved on the output shaft of the speed reducer 41, a positioning glass bead 43 is embedded outside the output shaft of the speed reducer 41, and a positioning hole 423 is formed in the outer side of the pipe portion 422 and matched with the extension end of the positioning glass bead 43.

[0035] That is, the connecting seat 42 in the embodiment is designed in a detachable structure, when it is necessary to replace the connecting seat 42 to adapt to different blades, the extension end of the positioning glass bead 43 is pressed to be retracted into the positioning hole 423, at this time, the entire connecting seat 42 can be pulled out and replaced, the structure of the positioning glass bead 43 is a prior art, which will not be described in detail, and the number of the positioning glass bead 43 can be selected by the person skilled in the art according to the needs, and two symmetrical positioning glass beads 43 are preferably adopted in the embodiment to ensure the stability of the connection.

[0036] In an alternative embodiment, the protection assembly 5 comprises a sleeve 51 fixed inside the rack 1, and a guide rod 52 movably inserted inside the sleeve 51; wherein the bottom end of the guide rod 52 is fixedly installed with a piston 53, the side edge of the sleeve 51 is provided with an air hole 54, and the top end of the guide rod 52 and the sleeve 51 are connected with a spring 55.

[0037] That is, in the embodiment, the piston 53 is moved inside the sleeve 51 by the guide rod 52, when the guide rod 52 is impacted and moves downward, the piston 53 will press the gas in the sleeve 51 along the air hole 54 to form an air damping effect.

[0038] Of course, the above embodiment is an air damping type damping scheme, and in other embodiments, the person skilled in the art can also set the protection assembly 5 as a hydraulic shock absorber, and the specific structure is also well known to the person skilled in the art, which will not be described here.

[0039] In summary, in the utility model, the height of the carrier 2 is adjusted by the driving assembly 3 to adjust the height of the blade, and the circumferential angle of the blade can be adjusted by the mounting and rotating mechanism 4 to improve the convenience and comprehensiveness of the blade machining operation, in addition, the protection plate 6 and the protection assembly 5 are designed to contact, so that when the mechanical drive of the carrier 2 is damaged and falls, the protection assembly 5 protects the protection plate 6, so as to protect the carrier 2 from impact, thereby reducing the shaking damage of the blade.

[0040] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A wind turbine blade fixation device comprising a frame (1), characterized in that: The carrier (2) is slidably connected to the inner side of the frame (1), and a driving assembly (3) for driving the carrier (2) to move up and down is arranged above the frame (1); An installation and rotation mechanism (4) is arranged on the carrier (2) and used for installing and rotating the blade; At least one protection assembly (5) is arranged below the inner side of the frame (1), and a protection plate (6) opposite to the protection assembly (5) is fixed to the bottom of the carrier (2).

2. A wind turbine blade fixture according to claim 1, wherein: The driving assembly (3) comprises two threaded rods (31) rotatably connected to the inner side of the frame (1), and two threaded seats (32) are fixedly arranged at the front end of the carrier (2) and threadedly connected with the threaded rods (31).

3. A wind turbine blade fixture according to claim 2, wherein: The driving assembly (3) further comprises: A lifting motor (33) is arranged on the side of the frame (1), and a worm (34) is fixedly arranged on the shaft end of the lifting motor (33), and the top end of each threaded rod (31) is fixedly provided with a worm wheel (35) engaged with the worm (34).

4. A wind turbine blade fixation device according to claim 1, characterized in that: The installation and rotation mechanism (4) comprises a reduction motor (41) arranged on the carrier (2), and a connecting seat (42) is fixedly arranged on the output end of the reduction motor (41), and the connecting seat (42) is provided with a flange surface (421) matched with the blade.

5. A wind turbine blade fixation device according to claim 4, wherein: The back end of the connecting seat (42) is provided with a pipe portion (422) sleeved on the output shaft of the reduction motor (41), a positioning glass bead (43) is embedded outside the output shaft of the reduction motor (41), and the outer side of the pipe portion (422) is provided with a positioning hole (423) matched with the telescopic end of the positioning glass bead (43).

6. A wind turbine blade fixture according to claim 1, wherein: The protection assembly (5) comprises a sleeve (51) fixed to the inner side of the frame (1), and a guide rod (52) is movably inserted into the inner side of the sleeve (51); The bottom end of the guide rod (52) is fixedly provided with a piston (53), the side of the sleeve (51) is provided with an air hole (54), and the top end of the guide rod (52) and the sleeve (51) are connected with a spring (55).

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