Wind power blade static load side pulling loading support

Abstract

The utility model belongs to the technical field of wind power blade testing, and particularly relates to a wind power blade static load side pulling loading support which comprises a supporting stand column, a steel wire rope, a fixed pulley assembly and a movable pulley assembly, the supporting stand column is vertically arranged, the fixed pulley assembly is rotatably installed on the supporting stand column through a rotating shaft, and the rotating shaft is vertically arranged. A loading device is arranged on one side of the supporting stand column, one end of a steel wire rope is fixedly connected to the fixed pulley assembly, and the other end of the steel wire rope sequentially bypasses the movable pulley assembly and the fixed pulley assembly and then is connected to the loading device. The loading angle can be automatically adjusted in real time according to the deformation of the wind power blade, so that the load is always applied in the optimal direction, local stress concentration of the blade is avoided, and the accuracy and reliability of a test result are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind turbine blade testing, and in particular relates to a static load side-pull loading bracket for a wind turbine blade. Background Art

[0002] In the field of wind power, the quality and performance of wind turbine blades are crucial to the efficiency and safety of wind power generation. Static load side-pull loading test is an important means to test the structural strength and performance of wind turbine blades. The current static load side-pull loading bracket for wind turbine blades has many shortcomings: on the one hand, it is difficult to flexibly adjust according to the installation angle and shape of different wind turbine blades, resulting in inaccurate loading angles and affecting the reliability of test results; on the other hand, during the test, when the wind turbine blades are deformed due to force, the existing bracket cannot automatically adjust the loading angle, resulting in uneven force on the blades, which may cause blade damage and cannot accurately simulate actual working conditions. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a wind turbine blade static load side-pull loading bracket to achieve automatic adjustment of the loading angle and improve the accuracy and reliability of the test.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a static load side-pull loading bracket for wind turbine blades, comprising a supporting column, a steel wire rope, a fixed pulley assembly and a movable pulley assembly. The supporting column is vertically arranged, and the fixed pulley assembly is rotatably installed on the supporting column through a rotating shaft. The rotating shaft is vertically arranged, and a loading device is arranged on one side of the supporting column. One end of the steel wire rope is fixedly connected to the fixed pulley assembly, and the other end of the steel wire rope is connected to the loading device after passing through the movable pulley assembly and the fixed pulley assembly in sequence.

[0005] Preferably, a guide pulley is rotatably provided at the upper end of the support column, the fixed pulley assembly is provided below the guide pulley, and the other end of the wire rope is firstly passed through the fixed pulley assembly from the lower side, and then passed through the guide pulley from the upper side.

[0006] Preferably, a through hole for the wire rope to pass through is opened on the rotating shaft. After the wire rope is wound around the guide pulley, it passes through the through hole and is wound around the fixed pulley assembly.

[0007] Preferably, the fixed pulley assembly includes two fixed pulley mounting plates arranged relatively at an interval and a fixed pulley, the fixed pulley is rotatably mounted between the two fixed pulley mounting plates, the fixed pulley mounting plates are fixedly connected to the rotating shaft, a fixing pin is also fixedly arranged between the two fixed pulley mounting plates, and one end of the wire rope is fixedly connected to the fixing pin.

[0008] Preferably, the fixed pulley assembly is rotatably mounted on a rotating seat via a rotating shaft, the rotating seat is fixedly mounted on a fixed plate, and the fixed plate is fixedly mounted on a supporting column.

[0009] Preferably, the movable pulley assembly comprises two movable pulley mounting plates which are arranged relatively and spaced apart from each other, and a movable pulley, and the movable pulley is rotatably mounted between the two movable pulley mounting plates.

[0010] Preferably, a plurality of fixing columns are arranged at intervals on the outer side of the movable pulley, and two ends of the fixing columns are respectively fixedly connected to the two movable pulley mounting plates.

[0011] Preferably, a reaction force bracket is fixedly provided on a side of the support column close to the movable pulley assembly.

[0012] Preferably, the support column is installed on a ground rail, a fixing groove is opened on the ground rail, and the lower end of the support column is movably installed in the fixing groove and fixed by bolts.

[0013] Preferably, an angle detection device is provided on the fixed pulley assembly or the rotating shaft, and the angle detection device is connected to a control system.

[0014] Preferably, the angle detection device is an angle sensor.

[0015] Preferably, the loading device is a winch, which is fixedly arranged at the lower part of the supporting column, and the other end of the wire rope is fixed and wound on the winch.

[0016] Compared with the prior art, the above technical solution has the following beneficial effects:

[0017] 1. The fixed pulley assembly in the utility model is rotatably mounted on the supporting column, and can automatically adjust the loading angle according to the deformation of the wind turbine blade in real time, so that the load is always applied in the optimal direction, avoiding local stress concentration on the blade, and improving the accuracy and reliability of the test results.

[0018] 2. The utility model can adapt to wind turbine blades of different models and shapes, improves the versatility and flexibility of the loading bracket, reduces the test preparation time and cost, and the angle detection device can monitor the rotation angle of the fixed pulley assembly in real time.

[0019] 3. Several fixed columns are arranged at intervals on the outside of the movable pulley, which can fix the wire rope to prevent it from falling off.

[0020] 4. A reaction support is provided on one side of the supporting column, and the reaction support is used to increase the rigidity of the supporting column in the main direction, thereby achieving the stability of the supporting column. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the other side of the utility model.

[0023] Figure 3 It is a cross-sectional view of the utility model.

[0024] Figure 4 It is a structural schematic diagram of the fixed pulley assembly.

[0025] Figure 5 A cross-sectional view of the fixed pulley assembly.

[0026] Figure 6 It is a structural schematic diagram of the movable pulley assembly.

[0027] Among them: 1, ground rail 2, fixing groove 3, anchor bolt 4, leg clamping frame 5, winch 6, support column 7, transverse reinforcement plate 8, side steel plate 9, guide pulley 10, reaction bracket 11, movable pulley assembly 12, fixed pulley assembly 13, wire rope 14, rotating seat 15, rotating shaft 16, through hole 17, fixed pulley 18, fixed pulley mounting plate 19, fixing pin 20, fixing plate 21, movable pulley mounting plate 22, shackle 23, fixing column 24, movable pulley. DETAILED DESCRIPTION

[0028] Figures 1 to 6 It is the best embodiment of the utility model, and the following Figures 1 to 6 The utility model is further described.

[0029] like Figure 1~2 As shown, a wind turbine blade static load side pull loading bracket of the utility model comprises a support column 6, a steel wire rope 13, a fixed pulley assembly 12 and a movable pulley assembly 11, the support column 6 is vertically arranged, the fixed pulley assembly 12 is arranged on the upper part of the support column 6, the fixed pulley assembly 12 is rotatably mounted on the support column 6 through a rotating shaft 15, and the rotating shaft 15 is vertically arranged, and an angle detection device is arranged on the fixed pulley assembly 12, the movable pulley assembly 11 is connected to the wind turbine blade, a loading device is arranged on one side of the support column 6, and one end of the steel wire rope 13 is fixedly connected to the fixed pulley assembly 12. On the pulley assembly 12, the other end first passes around the movable pulley assembly 11, and then passes around the fixed pulley assembly 12. Finally, the other end of the wire rope 13 is connected to the loading device, and the loading device pulls the wire rope 13 to apply a side pull load to the wind turbine blade. In this embodiment, the angle detection device is an angle sensor, and the angle sensor is connected to the rotating shaft 15. The angle sensor is connected to the control system. When the wind turbine blade is deformed due to force and the angle of the fixed pulley assembly 12 changes, the rotating shaft 15 rotates, and the angle sensor transmits the angle change signal of the rotating shaft 15 to the control system.

[0030] When testing wind turbine blades, it is necessary to install the support column 6 on the ground rail 1 of the test site. A fixing groove 2 is opened on the ground rail 1. The lower end of the support column 6 can be movably installed in the fixing groove 2. The support column 6 is installed in the corresponding position and fixed by the anchor bolts 3. In addition, a number of transverse reinforcement plates 7 are arranged at intervals on the support column 6 to increase the supporting strength of the support column 6. In addition, side steel plates 8 are arranged on both sides of the support column 6. The side steel plates 8 increase the lateral rigidity after the fixed pulley assembly 12 rotates, thereby achieving the stability of the support column 6.

[0031] A reaction bracket 10 is also fixedly arranged on one side of the support column 6 close to the movable pulley assembly 11. The reaction bracket 10 is used to disperse the tension of the steel rope on the support column 6 and reduce the deformation of the support column 6. The lower end of the reaction bracket 10 is also fixedly installed in the fixing groove 2 of the ground rail 1 by the anchor bolt 3. The reaction bracket 10 includes two right-angled triangle brackets symmetrically arranged on both sides of the support column 6. One side of the long right-angled side of the right-angled triangle bracket is fixedly connected and welded to the support column 6, and the two right-angled triangle brackets are both inclined outward to make the support of the reaction bracket 10 more stable. The two right-angled triangle brackets are connected by a round tube, and the middle part of the round tube is fixedly installed on the ground rail 1 by a leg clamping frame 4.

[0032] like Figure 3 As shown, the loading device in this embodiment is a winch 5, which is fixedly arranged at the lower part of the support column 6, and the other end of the wire rope 13 is fixed and wound on the winch 5. The winch 5 pulls the wire rope 13 to pull the wind turbine blade. A guide pulley 9 is rotatably arranged at the upper end of the support column 6, and the fixed pulley assembly 12 is arranged below the guide pulley 9. The wire rope 13 is first wound around the fixed pulley assembly 12 from the lower side of the fixed pulley assembly 12, and then goes upward and winds around the guide pulley 9 from the upper side of the guide pulley 9.

[0033] like Figures 4 and 5As shown, the fixed pulley assembly 12 includes two fixed pulley mounting plates 18 and a fixed pulley 17 which are relatively spaced apart. The fixed pulley 17 is rotatably mounted between the two fixed pulley mounting plates 18. In this embodiment, the fixed pulley assembly 12 is rotatably mounted on a rotating seat 14. The rotating seat 14 is fixedly welded on a fixed plate 20. The fixed plate 20 is further fixedly mounted on a supporting column 6. The fixed pulley mounting plates 18 are fixedly connected to a rotating shaft 15. The rotating shaft 15 in this embodiment includes two coaxial rotating shafts. The upper section of the rotating shaft is rotatably mounted on the rotating seat 14 and the lower end is fixedly connected to the fixed pulley mounting plate 18, and the lower section of the rotating shaft is rotatably mounted on the rotating seat 14 and the upper end is fixedly connected to the fixed pulley mounting plate 18. Since the wire rope 13 comes down from the top of the fixed pulley 17 and is then wound around the lower side of the fixed pulley 17, a through hole 16 for the wire rope 13 to pass through is opened on the rotating shaft 15 of the upper section. After the wire rope 13 is wound around the fixed pulley 17, it passes through the through hole 16 and is wound around the guide pulley 9. An angle sensor is arranged on the rotating seat 14 to monitor its angle change in real time and transmit data to the control system.

[0034] One end of the wire rope 13 is fixedly connected to the fixed pulley assembly 12 , specifically, a fixing pin 19 is fixedly arranged between two fixed pulley mounting plates 18 , one end of the wire rope 13 is fixedly connected to the fixing pin 19 , and the fixing pin 19 is arranged on the upper side of the axis of the fixed pulley 17 .

[0035] like Figure 6 As shown, the movable pulley assembly 11 includes two movable pulley mounting plates 21 and a movable pulley 24 which are relatively spaced apart. The movable pulley 24 is rotatably mounted between the two movable pulley mounting plates 21. A shackle 22 is provided on one side of the movable pulley 24. One end of the shackle 22 is rotatably connected between the two movable pulley mounting plates 21. The other end of the shackle 22 is fixedly connected to the wind turbine blade. The wire rope 13 is fixedly connected to the fixing pin 19, and then wound from the upper side of the movable pulley 24 to the lower side of the movable pulley 24. Finally, after being wound from the lower side of the fixed pulley 17, it goes around the guide pulley 9 upwards and is connected to the winch 5. Several fixing columns 23 are spaced apart on the outer side of the movable pulley 24. The two ends of the fixing column 23 are respectively fixedly connected to the two movable pulley mounting plates 21. The fixing column 23 can fix the wire rope 13 to prevent the wire rope 13 from falling off.

[0036] When the utility model is used, the ground rail 1 is fixed on the foundation of the test site to ensure its stability, and then the support column 6 is installed at a suitable position in the fixing groove 2, fixed by the anchor bolts 3 and other connectors, the rotating seat 14 is installed on the upper part of the support column 6, and the angle sensor is connected, the shackle 22 is fixedly connected with the wind turbine blade, and after the loading test is started, the winch 5 starts to work, and the wire rope 13 gradually applies the side pull load to the wind turbine blade. During the test, the angle sensor monitors the angle change of the rotating seat 14 in real time. When the wind turbine blade is deformed due to the force and the angle of the rotating seat 14 changes, the angle sensor transmits the angle change signal to the control system. The utility model can automatically adjust the loading angle according to the deformation of the wind turbine blade in real time, so that the load is always applied in the best direction, avoiding the local stress concentration of the blade, improving the accuracy and reliability of the test results, and the angle detection device can monitor the rotation angle of the fixed pulley assembly in real time; and the utility model can adapt to wind turbine blades of different models and shapes, improve the versatility and flexibility of the loading bracket, and reduce the test preparation time and cost.

[0037] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A wind turbine blade static load side tension loading bracket, characterized in that: The invention comprises a supporting column (6), a steel wire rope (13), a fixed pulley assembly (12) and a movable pulley assembly (11), wherein the supporting column (6) is arranged vertically, the fixed pulley assembly (12) is rotatably mounted on the supporting column (6) via a rotating shaft (15), the rotating shaft (15) is arranged vertically, a loading device is arranged on one side of the supporting column (6), one end of the steel wire rope (13) is fixedly connected to the fixed pulley assembly (12), and the other end of the steel wire rope (13) is connected to the loading device after passing through the movable pulley assembly (11) and the fixed pulley assembly (12) in sequence.

2. A wind turbine blade static load side tension loading bracket according to claim 1, characterized in that: A guide pulley (9) is rotatably arranged at the upper end of the support column (6), a fixed pulley assembly (12) is arranged below the guide pulley (9), and the other end of the wire rope (13) is firstly wound around the fixed pulley assembly (12) from the lower side of the fixed pulley assembly (12), and then wound around the guide pulley (9) from the upper side of the guide pulley (9).

3. A wind turbine blade static load side tension loading bracket according to claim 2, characterized in that: A through hole (16) for the steel wire rope (13) to pass through is provided on the rotating shaft (15). After the steel wire rope (13) is wound around the guide pulley (9), it passes through the through hole (16) and is wound around the fixed pulley assembly (12).

4. The wind turbine blade static load side tension loading bracket according to claim 1, characterized in that: The fixed pulley assembly (12) comprises two fixed pulley mounting plates (18) arranged relatively spaced apart and a fixed pulley (17); the fixed pulley (17) is rotatably mounted between the two fixed pulley mounting plates (18); and the fixed pulley mounting plates (18) are fixedly connected to the rotating shaft (15).

5. A wind turbine blade static load side tension loading bracket according to claim 4, characterized in that: A fixing pin (19) is also fixedly arranged between the two fixed pulley mounting plates (18), and one end of the steel wire rope (13) is fixedly connected to the fixing pin (19).

6. The wind turbine blade static load side tension loading bracket according to claim 1, characterized in that: The movable pulley assembly (11) comprises two movable pulley mounting plates (21) arranged relatively at an interval and a movable pulley (24); the movable pulley (24) is rotatably mounted between the two movable pulley mounting plates (21); a plurality of fixing columns (23) are arranged at intervals outside the movable pulley (24); and two ends of the fixing columns (23) are respectively fixedly connected to the two movable pulley mounting plates (21).

7. The wind turbine blade static load side tension loading bracket according to claim 1, characterized in that: The fixed pulley assembly (12) is rotatably mounted on a rotating seat (14) via a rotating shaft (15); the rotating seat (14) is fixedly mounted on a fixed plate (20); and the fixed plate (20) is fixedly mounted on a supporting column (6).

8. The wind turbine blade static load side tension loading bracket according to claim 1, characterized in that: A reaction force bracket (10) is also fixedly arranged on a side of the support column (6) close to the movable pulley assembly (11).

9. The wind turbine blade static load side tension loading bracket according to claim 1, characterized in that: An angle detection device is provided on the fixed pulley assembly (12) or the rotating shaft (15), and the angle detection device is connected to a control system.

10. The wind turbine blade static load side tension loading bracket according to claim 1, characterized in that: The loading device is a winch (5), which is fixedly arranged at the bottom of the supporting column (6), and the other end of the steel wire rope (13) is fixedly arranged and wound around the winch (5).

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