Wind power blade root reinforcing type connecting structure

Abstract

The invention discloses a wind power blade root reinforcing type connecting structure, which relates to the field of wind power equipment fixing and assembling, comprises a wind power blade connecting main body, a connecting and fixing unit, a reinforcing and clamping unit and a wind power blade connecting unit, and is characterized in that three wind power blade connecting seats in an annular array are arranged on the wind power blade connecting main body; each wind power blade connecting base is provided with a connecting and fixing unit, each connecting and fixing unit is connected with a wind power blade through a wind power blade connecting unit, and each reinforcing clamping unit comprises a clamping round block, a reinforcing round block, a rotating bearing, a damper and a reinforcing supporting block. The interior of the connecting ring in each connecting and fixing unit is rotationally connected with a reinforcing round block through a rotating bearing, the wind power blades are fixed more firmly and are prevented from falling off, the device is protected, the cost is reduced, the service life is prolonged, and the wind power blades are fixed more stably.

Description

Technical Field

[0001] This invention relates to the field of fixed assembly of wind power equipment, and in particular to a reinforced connection structure at the root of wind turbine blades. Background Technology

[0002] Wind power generation refers to the conversion of wind kinetic energy into mechanical kinetic energy, and then into electrical kinetic energy. It involves a wind turbine rotating under the influence of wind, converting the wind's kinetic energy into the mechanical energy of the turbine shaft, and a generator rotating under the drive of the turbine shaft to generate electricity. This is an important form of wind energy utilization. The equipment required for wind power generation is called a wind turbine generator set, which can be broadly divided into three parts: the wind turbine, the generator, and the tower. As early as the pre-Christian era, the Chinese used sails to power ships. In 1887, the Scotsman James Bryce first used a windmill to charge a battery. In 1888, the first wind power station was built in Cleveland, USA. In 1891, Danish meteorologist Paul La Kool introduced aerodynamic principles to design and build the world's first modern wind turbine. In 1941, the world's first MW-class wind turbine was invented in Vermont, USA, and connected to the local power grid.

[0003] Wind turbine blades are one of the core components of a wind turbine, accounting for approximately 15-20% of the total cost. Their design directly affects wind energy conversion efficiency and annual power generation, making them a crucial element in wind energy utilization. In 1888, American Charles F. Brush built the first automatically operating wind turbine for power generation, but its blades used a flat plate design, resulting in lower efficiency. In 1891, Dane Poul LaCour, while designing wind turbine blades, introduced aerodynamic concepts and discovered a wind turbine with rapid rotation and a smaller number of blades, thus pioneering a more scientific design method for wind turbine blades. To facilitate fixing, a reinforced connection structure at the root of the wind turbine blade was required.

[0004] The existing wind turbine blade root reinforcement connection structure is not secure enough to fix the wind turbine blade, which can easily lead to the wind turbine blade falling off, causing damage to the equipment, increasing costs, reducing service life, and making the wind turbine blade fixation unstable. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a wind turbine blade root reinforcement connection structure, which fixes the wind turbine blade more firmly, prevents the wind turbine blade from falling off, protects the device, reduces costs, increases service life, and makes the wind turbine blade fixation more stable, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wind turbine blade root reinforcement connection structure, comprising a wind turbine blade connection body, a connection fixing unit, a reinforcement snap-fit ​​unit, and a wind turbine blade connection unit: Wind turbine blade connection body: It is equipped with three ring arrays of wind turbine blade connection seats. Each wind turbine blade connection seat is equipped with a connection and fixing unit. Each connection and fixing unit is connected to the wind turbine blade through the wind turbine blade connection unit. The reinforced snap-fit ​​unit includes snap-fit ​​circular blocks, reinforcing circular blocks, rotating bearings, dampers, and reinforcing support blocks. In each connection and fixing unit, the connecting ring is rotatably connected to the reinforcing circular block through the rotating bearing. Each reinforcing circular block has a limiting circular groove on its lower side, and each limiting groove has four annularly arranged rectangular grooves. A damper is fixedly connected to each rectangular groove, and a reinforcing support block is set on each damper. Each wind turbine blade connecting seat has a circular groove, and a snap-fit ​​circular block is set in each circular groove. The outer surface of each reinforcing circular block has four annularly arranged connecting grooves, and each connecting groove snaps into the corresponding reinforcing support block. Each reinforcing circular block snaps into its corresponding circular groove.

[0007] The wind turbine blade connecting body is used to fix the wind turbine blade connecting seat. The wind turbine blade connecting seat is used to connect the external blade. The connecting and fixing unit is used for connection and fixing. The wind turbine blade connecting unit is used to connect the wind turbine blade. The reinforcing block is used to lock the locking block. The rotating bearing is used to rotate the reinforcing block for easy adjustment, so that the reinforcing support block and the locking block can be locked together for fixing. The damper is used to compress the reinforcing support block, thereby locking together for easy use.

[0008] Furthermore, the reinforced snap-fit ​​unit also includes a protective circular plate and a handrail. Each reinforced circular block has a circular hole, and each circular hole is movably connected to the handrail through a movable column. Each circular hole is also fixedly connected to the protective circular plate through bolts.

[0009] The handrail is used for easy rotation and is used for locking. The protective round plate is used for fixing and protection after locking, and thus the connection is made.

[0010] Furthermore, the reinforced snap-fit ​​unit also includes a limiting rectangular plate. Each reinforcing circular block has two equally spaced limiting grooves located on the outer side of the protective circular plate. A limiting rectangular plate is fixedly connected to each limiting groove. Each limiting rectangular plate is connected to the corresponding connecting and fixing unit through a pin.

[0011] The rectangular plate acts as a limit stop, preventing the reinforcing round block from rotating after being snapped in place.

[0012] Furthermore, the reinforced snap-fit ​​unit also includes stabilizing round blocks. Each reinforcing round block has a stabilizing round block in its circular groove. Each snap-fit ​​round block has a limiting circular groove, and each limiting circular groove is fixedly snap-fitted with the corresponding stabilizing round block.

[0013] The stabilizing round block is used for limiting the position, making it easy to snap into place and convenient for installation and use.

[0014] Furthermore, the connection and fixing unit includes a connecting ring, rectangular blocks, connecting inserts, fastening bolts, and limiting slides. Each wind turbine blade connecting seat is provided with a connecting ring, and four rectangular blocks in a ring array are provided on the outside of each connecting ring. Each rectangular block has a rectangular hole, and a connecting insert is inserted into each rectangular hole. Each connecting insert has a sliding hole, and a limiting slide is fixedly connected to each sliding hole. The sliding hole on each rectangular block is slidably connected to the corresponding limiting slide. Each rectangular block is fixedly connected to the corresponding rectangular block by fastening bolts.

[0015] The connecting ring is used to fix the rectangular block, the rectangular block is used to fix the connecting plate, the connecting plate is used to insert the snap-fit ​​block, the fastening bolt is used to make the connecting plate more stable, and the limiting slide is used to make the movement of the connecting plate more stable. The insertion is used in this way to make the fixation more stable.

[0016] Furthermore, the connection and fixing unit also includes snap-fit ​​blocks and stabilizing plugs. Four snap-fit ​​blocks in a ring array are provided on the outer surface of each wind turbine blade connector. Each snap-fit ​​block has a snap-fit ​​rectangular hole. Each connecting plug is fixed and snapped in the corresponding snap-fit ​​rectangular hole. Each snap-fit ​​block is snapped with the corresponding connecting plug through the stabilizing plug.

[0017] The snap-fit ​​block is used to insert the connecting plate, and the stabilizing block is used to make the connecting plate more stable. They are assembled and used for fixed use.

[0018] Furthermore, the connection and fixing unit also includes connection cylinders and connection sockets. Multiple ring arrays of connection cylinders are provided on the lower surface of each connection ring. Multiple equally spaced connection sockets are provided on each wind turbine blade connection seat at the edge of the circular groove. Each connection socket is inserted into the corresponding connection cylinder.

[0019] The connecting cylinder and the connecting socket work together to fix the connecting ring on the wind turbine blade connecting seat for limiting and fixing purposes.

[0020] Furthermore, the wind turbine blade connection unit includes a reinforcing rod fixing seat, a reinforcing cylinder, a reinforcing connecting block, and an arc-shaped clamping plate. Each connecting ring has four reinforcing rod fixing seats arranged in a ring array on its outer surface. Each reinforcing rod fixing seat has multiple equally spaced reinforcing cylinders. A reinforcing connecting block is fixedly fitted onto each reinforcing cylinder on each reinforcing rod fixing seat. Two equally spaced arc-shaped clamping plates are fixedly connected to the wind turbine blade. Each arc-shaped clamping plate is fixedly connected to the corresponding reinforcing connecting block.

[0021] The reinforcing rod fixing seat is used to fix the reinforcing cylinder, which is used to provide reinforcement support and make the wind turbine blade more stable. The reinforcing connecting block is used to fix the arc-shaped clamping plate, which is used to fix the wind turbine blade, thus assembling and reinforcing the wind turbine blade.

[0022] Furthermore, the wind turbine blade connection unit also includes a limiting arc groove, a wind turbine blade mounting plate, and an arc-shaped fixing block. Each connecting ring has four annular arrays of limiting arc grooves on its upper side. An arc-shaped fixing block is fixedly snapped into each limiting arc groove. Each arc-shaped fixing block is fixedly connected to the corresponding wind turbine blade mounting plate. Each wind turbine blade mounting plate is fixedly snapped to the corresponding wind turbine blade by bolts.

[0023] The limiting arc groove is used to cooperate with the limiting snap-fit ​​arc fixing block to fix the wind turbine blades. The arc fixing block is used to fix the wind turbine blade mounting plate, and the wind turbine blade mounting plate is used to fix and support the external wind turbine blades.

[0024] Furthermore, the wind turbine blade connection unit also includes a support frame and a wind turbine blade fixing plate. A support frame is fixedly connected to the outer side of each connecting ring at the position between the four reinforcing rod fixing seats. Each support frame is fixedly connected to the corresponding wind turbine blade fixing plate, and each wind turbine blade fixing plate is fixedly connected to the corresponding wind turbine blade.

[0025] The support frame is used to fix the wind turbine blade fixing plate, which is used to fix the wind turbine blade, thereby assembling and reinforcing it.

[0026] Compared with the prior art, the beneficial effects of the present invention are: 1. The reinforced connection structure at the root of this wind turbine blade has the following advantages: It is equipped with a reinforced snap-fit ​​unit, through which a reinforcing round block is used to snap the snap-fit ​​round block, a rotating bearing is used to allow the reinforcing round block to rotate for easy adjustment, so that the reinforcing support block and the snap-fit ​​round block can be snapped together for fixation, a damper is used to compress the reinforcing support block, a handrail is used to facilitate rotation for snap-fit, a protective round plate is used to limit the reinforcing round block after snap-fit, a limiting rectangular plate is used to limit the reinforcing round block to prevent rotation, and a stabilizing round block is used to limit the snap-fit ​​to facilitate misalignment for splicing, making the fixation more stable and convenient for assembly and use; 2. The reinforced connection structure at the root of this wind turbine blade has the following advantages: It includes a wind turbine blade connection unit, a reinforcing rod fixing seat for fixing a reinforcing cylinder, which provides reinforcement and support, making the wind turbine blade more stable; a reinforcing connecting block for fixing an arc-shaped clamping plate, which in turn fixes the wind turbine blade; a limiting arc-shaped groove for engaging with a limiting arc-shaped fixing block to fix the wind turbine blade; an arc-shaped fixing block for fixing the wind turbine blade mounting plate, which provides support for the external wind turbine blade; and a support frame for fixing the wind turbine blade fixing plate, which in turn fixes the wind turbine blade for assembly and use. 3. The reinforced connection structure at the root of this wind turbine blade has the following advantages: the wind turbine blade is more firmly fixed, preventing the wind turbine blade from falling off, protecting the device, reducing costs, increasing service life, and making the wind turbine blade fixation more stable. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a partial structural diagram of the connecting and fixing unit of the present invention; Figure 4 This is a schematic cross-sectional view of the top of the connecting and fixing unit of the present invention; Figure 5 This is a partial cross-sectional view of the reinforced snap-fit ​​unit of the present invention; Figure 6 This is a schematic diagram of the reinforced support block structure of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the connecting and fixing unit of the present invention; Figure 8 This is a partial structural diagram of the arc-shaped fixing block of the present invention.

[0028] Explanation of reference numerals in the attached figures: 1. Wind turbine blade connection body; 2. Wind turbine blade connection seat; 3. Connection and fixing unit; 31. Connecting ring; 32. Rectangular block; 33. Connecting insert plate; 34. Fastening bolt; 35. Limiting slide column; 36. Clip block; 37. Stabilizing insert block; 38. Connecting cylinder; 39. Connecting hole; 4. Reinforced clip unit; 41. Clip block; 42. Reinforced block; 43. Rotating bearing; 44. Stabilizing block; 45. Damper; 46. Reinforced support block; 47. Protective circular plate; 48. Handrail; 49. Limiting rectangular plate; 5. Wind turbine blade connection unit; 51. Support frame one; 52. Wind turbine blade fixing plate; 53. Reinforced rod fixing seat; 54. Reinforced cylinder; 55. Reinforced connecting block; 56. Arc-shaped clamping plate; 57. Limiting arc-shaped groove; 58. Wind turbine blade mounting plate; 59. Arc-shaped fixing block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-8 This embodiment provides a technical solution: a wind turbine blade root reinforced connection structure, including a wind turbine blade connection body 1, a connection fixing unit 3, a reinforcing snap-fit ​​unit 4, and a wind turbine blade connection unit 5. Wind turbine blade connection body 1: It is provided with three wind turbine blade connection seats 2 in a ring array. Each wind turbine blade connection seat 2 is provided with a connection fixing unit 3. Each connection fixing unit 3 is connected to the wind turbine blade through a wind turbine blade connection unit 5. The reinforced snap-fit ​​unit 4 includes a snap-fit ​​circular block 41, a reinforcing circular block 42, a rotating bearing 43, a damper 45, and a reinforcing support block 46. In each connecting and fixing unit 3, the connecting ring 31 is rotatably connected to the reinforcing circular block 42 through the rotating bearing 43. Each reinforcing circular block 42 has a limiting circular groove on its lower side, and each limiting groove has four rectangular grooves arranged in an annular array. A damper 45 is fixedly connected in each rectangular groove, and a reinforcing support block 46 is provided on each damper 45. Each wind turbine blade connecting seat 2 has a circular groove, and a snap-fit ​​circular block 41 is provided in each circular groove. The outer surface of each reinforcing circular block 42 has four connecting grooves arranged in an annular array. Each connecting groove snaps into the corresponding reinforcing support block 46, and each reinforcing circular block 42 snaps into the corresponding circular groove.

[0031] The wind turbine blade connecting body 1 is used to fix the wind turbine blade connecting seat 2. The wind turbine blade connecting seat 2 is used to connect the external blade. The connecting and fixing unit 3 is used for connection and fixing. The wind turbine blade connecting unit 5 is used for connecting the wind turbine blade. The reinforcing block 42 is used to lock the locking block 41. The rotating bearing 43 is used to rotate the reinforcing block 42 for easy adjustment, so that the reinforcing support block 46 can lock with the locking block 41 for fixing. The damper 45 is used to compress the reinforcing support block 46 for locking, thus facilitating use.

[0032] The reinforced snap-fit ​​unit 4 also includes a protective circular plate 47 and a handrail 48. Each reinforcing circular block 42 has a circular hole 1. Each circular hole 1 is movably connected to the handrail 48 through a movable column. Each circular hole 1 is fixedly connected to the protective circular plate 47 through bolts.

[0033] The handrail 48 is used for easy rotation and locking, and the protective round plate 47 is used for fixing and protecting after locking, thus connecting the two.

[0034] The reinforcing snap-fit ​​unit 4 also includes a limiting rectangular plate 49. Each reinforcing round block 42 has two equally spaced limiting grooves located on the outer side of the protective round plate 47. Each limiting groove is fixedly connected to a limiting rectangular plate 49. Each limiting rectangular plate 49 is connected to the corresponding connecting and fixing unit 3 through a pin.

[0035] The limiting rectangular plate 49 is used to limit and stop the movement of the reinforcing round block 42 after being snapped in place.

[0036] The reinforced snap-fit ​​unit 4 also includes a stabilizing round block 44. Each reinforcing round block 42 has a stabilizing round block 44 in its round groove. Each snap-fit ​​round block 41 has a limiting round groove, and each limiting round groove is fixedly snap-fitted with the corresponding stabilizing round block 44.

[0037] The stabilizing block 44 is used for limiting the position, making it easy to snap into place and convenient for installation and use.

[0038] The connecting and fixing unit 3 includes a connecting ring 31, a rectangular block 32, a connecting insert plate 33, a fastening bolt 34, and a limiting slide post 35. Each wind turbine blade connecting seat 2 is provided with a connecting ring 31. Four rectangular blocks 32 in a ring array are provided on the outside of each connecting ring 31. Each rectangular block 32 has a rectangular hole. A connecting insert plate 33 is inserted into each rectangular hole. Each connecting insert plate 33 has a sliding hole. A limiting slide post 35 is fixedly connected to each sliding hole. The sliding hole on each rectangular block 32 is slidably connected to the corresponding limiting slide post 35. Each rectangular block 32 is fixedly connected to the corresponding rectangular block 32 by a fastening bolt 34.

[0039] The connecting ring 31 is used to fix the rectangular block 32, the rectangular block 32 is used to fix the connecting plate 33, the connecting plate 33 is used to insert the snap-fit ​​block 36, the fastening bolt 34 is used to make the connecting plate 33 more stable, and the limiting slide post 35 is used to make the connecting plate 33 move more stably. The insertion is used to make the fixation more stable.

[0040] The connecting and fixing unit 3 also includes a snap-fit ​​block 36 and a stabilizing plug 37. Each wind turbine blade connecting seat 2 has four snap-fit ​​blocks 36 arranged in a ring array on its outer surface. Each snap-fit ​​block 36 has a snap-fit ​​rectangular hole. Each connecting plug 33 is fixedly snapped in the corresponding snap-fit ​​rectangular hole. Each snap-fit ​​block 36 is snapped with the corresponding connecting plug 33 through the stabilizing plug 37.

[0041] The snap-fit ​​block 36 is used to insert the connecting plate 33, and the stabilizing block 37 is used to make the connecting plate 33 more stable, so that it can be assembled and used for fixed use.

[0042] The connecting and fixing unit 3 also includes connecting cylinders 38 and connecting holes 39. The lower surface of each connecting ring 31 is provided with multiple annular arrays of connecting cylinders 38. Each wind turbine blade connecting seat 2 is provided with multiple equally spaced connecting holes 39 at the edge of the circular groove. Each connecting hole 39 is inserted into the corresponding connecting cylinder 38.

[0043] The connecting cylinder 38 and the connecting socket 39 cooperate to fix the connecting ring 31 on the wind turbine blade connecting seat 2 for limiting and fixing purposes.

[0044] The wind turbine blade connection unit 5 includes a reinforcing rod fixing seat 53, a reinforcing cylinder 54, a reinforcing connecting block 55, and an arc-shaped clamping plate 56. Each connecting ring 31 has four annular arrays of reinforcing rod fixing seats 53 on its outer surface. Each reinforcing rod fixing seat 53 has multiple equally spaced reinforcing cylinders 54. A reinforcing connecting block 55 is fixedly sleeved on each reinforcing cylinder 54 on each reinforcing rod fixing seat 53. Two equally spaced arc-shaped clamping plates 56 are fixedly connected to the wind turbine blade. Each arc-shaped clamping plate 56 is fixedly connected to the corresponding reinforcing connecting block 55.

[0045] The reinforcing rod fixing seat 53 is used to fix the reinforcing cylinder 54, which is used to provide reinforcement support and make the wind turbine blade more stable. The reinforcing connecting block 55 is used to fix the arc-shaped clamping plate 56, which is used to fix the wind turbine blade, thereby assembling and reinforcing it.

[0046] The wind turbine blade connection unit 5 also includes a limiting arc groove 57, a wind turbine blade mounting plate 58, and an arc-shaped fixing block 59. Each connecting ring 31 has four annular arrays of limiting arc grooves 57 on its upper side. An arc-shaped fixing block 59 is fixedly snapped into each limiting arc groove 57. Each arc-shaped fixing block 59 is fixedly connected to the corresponding wind turbine blade mounting plate 58. Each wind turbine blade mounting plate 58 is fixedly snapped to the corresponding wind turbine blade by bolts.

[0047] The limiting arc groove 57 is used to cooperate with the limiting snap-fit ​​arc fixing block 59 to fix the wind turbine blade. The arc fixing block 59 is used to fix the wind turbine blade mounting plate 58. The wind turbine blade mounting plate 58 is used to fix and support the external wind turbine blade.

[0048] The wind turbine blade connection unit 5 also includes a support frame 51 and a wind turbine blade fixing plate 52. Each connecting ring 31 is fixedly connected to a support frame 51 at a position between the four reinforcing rod fixing seats 53. Each support frame 51 is fixedly connected to the corresponding wind turbine blade fixing plate 52. Each wind turbine blade fixing plate 52 is fixedly connected to the corresponding wind turbine blade.

[0049] The support frame 51 is used to fix the wind turbine blade fixing plate 52, and the wind turbine blade fixing plate 52 is used to fix the wind turbine blade, thereby assembling and reinforcing it.

[0050] The working principle of the wind turbine blade root reinforcement connection structure provided by this invention is as follows: First, a connecting ring 31 is used to fix a rectangular block 32, which in turn fixes a connecting plate 33. The connecting plate 33 is used to insert a snap-fit ​​block 36. Fastening bolts 34 ensure the connecting plate 33 is more stable. A limiting slide 35 ensures the connecting plate 33 moves more stably. The snap-fit ​​block 36 is used to insert the connecting plate 33, and a stabilizing block 37 ensures the connecting plate 33 is more stable. A connecting cylinder 38 and a connecting hole 39 cooperate to fix the connecting ring 31 onto the wind turbine blade connecting seat 2 for assembly. Simultaneously, a reinforcing block 42 is used to snap the snap-fit ​​block 41, and a rotating bearing 43 allows the reinforcing block 42 to rotate for easy adjustment, allowing the reinforcing support block 46 to snap into the snap-fit ​​block 41 for fixation. A damper 45 is used to stabilize the reinforcing support block 46. Compression, handle 48 is used for easy rotation and snap-fit, protective circular plate 47 is used for snap-fit, limit rectangular plate 49 is used for limiting, to prevent the reinforcing circular block 42 from rotating after snap-fit, stabilizing circular block 44 is used for limiting, to facilitate snap-fit ​​misalignment, finally the reinforcing rod fixing seat 53 is used to fix the reinforcing column 54, the reinforcing column 54 is used for reinforcement support, making the wind turbine blade fixation more stable, reinforcing connecting block 55 is used to fix the arc clamping plate 56, the arc clamping plate 56 is used to fix the wind turbine blade, the limiting arc groove 57 is used to cooperate with the limiting snap-fit ​​arc fixing block 59 to fix the wind turbine blade, the arc fixing block 59 is used to fix the wind turbine blade mounting plate 58, the wind turbine blade mounting plate 58 is used to fix and support the external wind turbine blade, support frame 51 is used to fix the wind turbine blade fixing plate 52, the wind turbine blade fixing plate 52 is used to fix the wind turbine blade, for fixation use.

[0051] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A wind turbine blade root reinforcement connection structure, comprising a wind turbine blade connection body (1), a connection fixing unit (3), a reinforcement snap-fit ​​unit (4), and a wind turbine blade connection unit (5), characterized in that: Wind turbine blade connection body (1): It is equipped with three wind turbine blade connection seats (2) arranged in a ring array. Each wind turbine blade connection seat (2) is equipped with a connection fixing unit (3). Each connection fixing unit (3) is connected to the wind turbine blade through the wind turbine blade connection unit (5). The reinforced snap-fit ​​unit (4) includes a snap-fit ​​circular block (41), a reinforced circular block (42), a rotating bearing (43), a damper (45), and a reinforced support block (46). In each connection and fixing unit (3), the connecting ring (31) is rotatably connected to the reinforced circular block (42) through the rotating bearing (43). Each reinforced circular block (42) has a limiting circular groove on its lower side. Each limiting groove has four rectangular grooves arranged in an annular array. Each rectangular groove is fixedly connected to a damper (45). Each damper (45) is provided with a reinforced support block (46). Each wind turbine blade connecting seat (2) has a circular groove. Each circular groove has a snap-fit ​​circular block (41). The outer surface of each reinforced circular block (42) has four annular array connecting grooves. Each connecting groove is snap-fitted to the corresponding reinforced support block (46). Each reinforced circular block (42) is snap-fitted in the corresponding circular groove.

2. The wind turbine blade root reinforcement connection structure according to claim 1, characterized in that: The reinforced snap-fit ​​unit (4) also includes a protective circular plate (47) and a handrail (48). Each reinforced circular block (42) has a circular hole, and each circular hole is connected to the handrail (48) by a movable column. Each circular hole is fixedly connected to the protective circular plate (47) by bolts.

3. The wind turbine blade root reinforcement connection structure according to claim 1, characterized in that: The reinforced snap-fit ​​unit (4) also includes a limiting rectangular plate (49). Each reinforcing round block (42) has two equally spaced limiting grooves located on the outside of the protective round plate (47). Each limiting groove is fixedly connected to a limiting rectangular plate (49). Each limiting rectangular plate (49) is connected to the corresponding connecting and fixing unit (3) through a pin.

4. The wind turbine blade root reinforcement connection structure according to claim 1, characterized in that: The reinforced snap-fit ​​unit (4) also includes a stabilizing round block (44). A stabilizing round block (44) is provided in the round groove of each reinforced round block (42). A limiting round groove is opened on each snap-fit ​​round block (41). Each limiting round groove is fixedly snap-fitted with the corresponding stabilizing round block (44).

5. The wind turbine blade root reinforcement connection structure according to claim 1, characterized in that: The connecting and fixing unit (3) includes a connecting ring (31), a rectangular block (32), a connecting plate (33), a fastening bolt (34), and a limiting slide column (35). Each wind turbine blade connecting seat (2) is provided with a connecting ring (31). Four rectangular blocks (32) in a ring array are provided on the outside of each connecting ring (31). Each rectangular block (32) has a rectangular hole. A connecting plate (33) is inserted into each rectangular hole. Each connecting plate (33) has a sliding hole. A limiting slide column (35) is fixedly connected in each sliding hole. The sliding hole on each rectangular block (32) is slidably connected to the corresponding limiting slide column (35). Each rectangular block (32) is fixedly connected to the corresponding rectangular block (32) by a fastening bolt (34).

6. The wind turbine blade root reinforcement connection structure according to claim 5, characterized in that: The connecting and fixing unit (3) also includes a snap-fit ​​block (36) and a stabilizing plug (37). Each wind turbine blade connecting seat (2) has four snap-fit ​​blocks (36) arranged in a ring array on its outer surface. Each snap-fit ​​block (36) has a snap-fit ​​rectangular hole. Each connecting plug (33) is fixedly snapped in the corresponding snap-fit ​​rectangular hole. Each snap-fit ​​block (36) is snapped with the corresponding connecting plug (33) through the stabilizing plug (37).

7. The wind turbine blade root reinforcement connection structure according to claim 5, characterized in that: The connecting and fixing unit (3) also includes connecting cylinders (38) and connecting holes (39). Each connecting ring (31) has multiple annular arrays of connecting cylinders (38) on its lower surface. Each wind turbine blade connecting seat (2) has multiple equally spaced connecting holes (39) at the edge of the circular groove. Each connecting hole (39) is inserted into the corresponding connecting cylinder (38).

8. The wind turbine blade root reinforcement connection structure according to claim 5, characterized in that: The wind turbine blade connection unit (5) includes a reinforcing rod fixing seat (53), a reinforcing cylinder (54), a reinforcing connecting block (55), and an arc-shaped clamping plate (56). Each connecting ring (31) has four ring-shaped reinforcing rod fixing seats (53) arranged on its outer surface. Each reinforcing rod fixing seat (53) has multiple equally spaced reinforcing cylinders (54). Each reinforcing cylinder (54) on each reinforcing rod fixing seat (53) is fixedly fitted with a reinforcing connecting block (55). Two equally spaced arc-shaped clamping plates (56) are fixedly connected to the wind turbine blade. Each arc-shaped clamping plate (56) is fixedly connected to the corresponding reinforcing connecting block (55).

9. The wind turbine blade root reinforcement connection structure according to claim 8, characterized in that: The wind turbine blade connection unit (5) also includes a limiting arc groove (57), a wind turbine blade mounting plate (58), and an arc-shaped fixing block (59). Each connecting ring (31) has four ring-shaped limiting arc grooves (57) on its upper side. An arc-shaped fixing block (59) is fixedly snapped into each limiting arc groove (57). Each arc-shaped fixing block (59) is fixedly connected to the corresponding wind turbine blade mounting plate (58). Each wind turbine blade mounting plate (58) is fixedly snapped into the corresponding wind turbine blade by bolts.

10. A wind turbine blade root reinforcement connection structure according to claim 8, characterized in that: The wind turbine blade connection unit (5) also includes a support frame (51) and a wind turbine blade fixing plate (52). Each connecting ring (31) is fixedly connected to a support frame (51) at a position between four reinforcing rod fixing seats (53). Each support frame (51) is fixedly connected to the corresponding wind turbine blade fixing plate (52). Each wind turbine blade fixing plate (52) is fixedly connected to the corresponding wind turbine blade.

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