Wind power blade fatigue testing device

Abstract

The utility model discloses a wind power blade fatigue testing device which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a detection chamber, the upper end of the detection chamber is provided with a first motor, and the tail end of an output shaft of the first motor extends into the detection chamber and is fixedly connected with a rotating rod. The two ends of the rotating rod are rotatably connected with the inner top and the inner bottom of the detection chamber, a fixing block is fixedly connected to the rotating rod, a placement table is fixedly connected to the left side of the fixing block, a plurality of sliding blocks are fixedly connected to the lower end of the placement table, two sliding grooves are formed in the upper end of the bottom plate, and the two sliding blocks are slidably connected with the inner walls of the sliding grooves. And a pressing assembly is arranged above the placing table. According to the device, the wind power blades can be moved into the detection chamber more conveniently for fatigue testing, the convenience of testing the wind power blades is greatly improved, meanwhile, the wind power blades of different sizes can be pressed, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stretching filter membrane processing, in particular to a fatigue testing device for wind turbine blades. Background Art

[0002] Wind power generation converts the kinetic energy of wind into electrical energy. As a clean and renewable energy source, wind energy is deeply loved by people. Wind power generation requires special wind turbines, and an important component of a wind turbine is a wind turbine blade. During the production of wind turbine blades, it is necessary to test the fatigue of the wind turbine blades. However, the existing wind power fatigue tests still have the following problems:

[0003] The existing fatigue test of wind turbine blades usually installs the wind turbine blade on a test device, and then blows air flow towards the blade, and judges the fatigue cycle of the blade according to the corrosion degree of the blade. However, because the existing wind turbine blades are relatively large, it is more troublesome to transfer the wind turbine blade to the test room for testing. Moreover, since the wind turbine blades will be designed in different sizes according to the installation environment, and the positions of the existing limiting devices during the test of the wind turbine blades are mostly fixed, it is impossible to limit wind turbine blades of different sizes. Therefore, it is necessary to design a fatigue testing device for wind turbine blades to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a fatigue testing device for wind turbine blades. This device can move the wind turbine blade to the detection room for fatigue testing more conveniently, greatly improving the convenience of testing the wind turbine blade. At the same time, it can press wind turbine blades of different sizes, improving the applicability of the device.

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

[0006] A fatigue testing device for wind turbine blades, including a bottom plate. The upper end of the bottom plate is fixedly connected with a detection room. The upper end of the detection room is provided with a first motor. The end of the output shaft of the first motor extends into the detection room and is fixedly connected with a rotating rod. Both ends of the rotating rod are rotatably connected with the inner top and inner bottom of the detection room. A fixed block is fixedly connected to the rotating rod. The left side of the fixed block is fixedly connected with a placement table. The lower end of the placement table is fixedly connected with a plurality of sliders. Two chutes are arranged on the upper end of the bottom plate. The two sliders are slidably connected with the inner walls of the chutes. A pressing assembly is arranged above the placement table.

[0007] Preferably, the pressing assembly includes two moving grooves provided at the upper end of the placing table. Two U-shaped frames are slidably connected in the two moving grooves. A threaded rod is rotatably connected through each of the two U-shaped frames. The upper ends of the two threaded rods are fixedly connected with knobs. Threaded sleeves are threadedly connected to the two threaded rods. The lower ends of the two threaded sleeves are fixedly connected with pressing plates.

[0008] Preferably, two telescopic rods are fixedly connected to the inner tops of the two U-shaped frames. The telescopic end of each telescopic rod is fixedly connected to the upper end of the pressing plate.

[0009] Preferably, two pneumatic rods are fixedly connected to the upper end of the detection chamber. The telescopic ends of the two pneumatic rods are jointly fixedly connected with a fixing plate. A blocking door is fixedly connected to the left side of the fixing plate.

[0010] Preferably, a second motor is installed at the rear side of the detection chamber. The end of the output shaft of the second motor extends into the detection chamber and is fixedly connected with a lead screw. A hollow plate is threadedly connected to the lead screw. The hollow plate is slidably connected to the right inner wall of the detection chamber. A plurality of air outlets are provided at the lower end of the hollow plate.

[0011] Preferably, an air pump is installed at the upper end of the detection chamber. The air outlet end of the air pump is communicated with the hollow plate through a connecting pipe. The connecting pipe is a flexible pipe.

[0012] Compared with the prior art, the advantages of the present device are as follows:

[0013] 1. Compared with the prior art, through the setting of the first motor and the placing table, when detecting a wind power blade, the wind power blade can be directly lifted onto the placing table by a hoisting device, and then the placing table is used to move the wind power blade into the detection chamber, so that the wind power blade can be quickly moved below the air outlet for testing;

[0014] 2. Compared with the prior art, through the setting of the two pressing assemblies and the sliding grooves, during the testing process, different wind power blades can be limited, avoiding the situation that the wind power blade deviates due to being too large during the testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a wind power blade fatigue testing device proposed by the present utility model;

[0016] Figure 2 is Figure 1 the internal schematic diagram of

[0017] Figure 3 is Figure 1 the enlarged structural schematic diagram at A in

[0018] In the figure: 1 bottom plate, 2 detection chamber, 3 blocking door, 4 pneumatic rod, 5 first motor, 6 second motor, 7 air pump, 8 connecting pipe, 9 fixing plate, 10 sliding groove, 11 placement table, 12 hollow plate, 13 lead screw, 14 moving groove, 15 U-shaped frame, 16 knob, 17 threaded rod, 18 threaded sleeve, 19 telescopic rod, 20 pressing plate. Detailed implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Refer to Figures 1-3 , a fatigue test device for wind turbine blades, including a bottom plate 1, the upper end of the bottom plate 1 is fixedly connected with a detection chamber 2, the upper end of the detection chamber 2 is provided with a first motor 5, the end of the output shaft of the first motor 5 extends into the detection chamber 2 and is fixedly connected with a rotating rod, both ends of the rotating rod are rotatably connected with the inner top and inner bottom of the detection chamber 2, a fixed block is fixedly connected to the rotating rod, a placement table 11 is fixedly connected to the left side of the fixed block, a plurality of sliders are fixedly connected to the lower end of the placement table 11, two sliding grooves 10 are provided on the upper end of the bottom plate 1, and the two sliders are slidably connected with the inner walls of the sliding grooves 10. A pressing assembly is provided above the placement table 11.

[0021] Among them, the pressing assembly includes two moving grooves 14 provided on the upper end of the placement table 11, two U-shaped frames 15 are slidably connected in the two moving grooves 14, threaded rods 17 are rotatably connected through the two U-shaped frames 15, knobs 16 are fixedly connected to the upper ends of the two threaded rods 17, threaded sleeves 18 are threadedly connected to the two threaded rods 17, pressing plates 20 are fixedly connected to the lower ends of the two threaded sleeves 18, and two telescopic rods 19 are fixedly connected to the inner tops of the two U-shaped frames 15, and the telescopic ends of each telescopic rod 19 are fixedly connected to the upper end of the pressing plate 20.

[0022] Among them, two pneumatic rods 4 are fixedly connected to the upper end of the detection chamber 2, a fixing plate 9 is fixedly connected to the telescopic ends of the two pneumatic rods 4, a blocking door 3 is fixedly connected to the left side of the fixing plate 9, the detection chamber 2 will not be sealed after the blocking door 3 moves down, and the air flow in the detection chamber 2 can flow out through the sliding groove 10.

[0023] Among them, a second motor 6 is installed at the rear side of the detection chamber 2. The end of the output shaft of the second motor 6 extends into the detection chamber 2 and is fixedly connected to a lead screw 13. The lead screw 13 can adjust the position of the hollow plate 12, so that the air flow can be blown to a single position alone, and the fatigue value of a specific position of the wind turbine blade can be tested, so that a certain comparison can be made during the test. The hollow plate 12 is threadedly connected to the lead screw 13. The hollow plate 12 is slidably connected to the right inner wall of the detection chamber 2. A plurality of air outlets are provided at the lower end of the hollow plate 12. An air pump 7 is installed at the upper end of the detection chamber 2. The air outlet end of the air pump 7 is communicated with the hollow plate 12 through a connecting pipe 8. The connecting pipe 8 is a flexible pipe.

[0024] The functional principle of the present utility model can be elaborated through the following operation method: The wind turbine blade is hoisted onto the placement table 11 by a hoisting device of the prior art. Then, the staff slides two U-shaped frames 15. After moving the two U-shaped frames 15 to appropriate positions, the two knobs 16 are rotated, so that the threaded rods 17 rotate, and the two threaded sleeves 18 drive the corresponding pressing plates 20 to move downward, thereby pressing the wind turbine blade tightly.

[0025] The staff controls the operation of the first motor 5, so that the rotating rod rotates and the wind turbine blade is sent into the detection chamber 2 through the placement table 11. The staff controls the pneumatic rod 4 to contract, so that the blocking door 3 moves downward to seal the left side of the detection chamber 2. The staff controls the operation of the second motor 6 and the air pump 7, so that the hollow plate 12 moves left and right, and the air flow blows towards the wind turbine blade. The staff can judge the fatigue limit of the wind turbine blade according to the wear degree of the wind turbine blade.

[0026] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A wind turbine blade fatigue testing device, comprising a base plate (1), characterized in that: The upper end of the base plate (1) is fixedly connected to a detection chamber (2), and a first motor (5) is installed at the upper end of the detection chamber (2). The output shaft end of the first motor (5) extends into the detection chamber (2) and is fixedly connected to a rotating rod. The two ends of the rotating rod are rotatably connected to the inner top and inner bottom of the detection chamber (2). A fixed block is fixedly connected to the rotating rod, and a placement table (11) is fixedly connected to the left side of the fixed block. A plurality of sliders are fixedly connected to the lower end of the placement table (11). Two slide grooves (10) are provided at the upper end of the base plate (1), and the two sliders are slidably connected to the inner wall of the slide groove (10). A clamping assembly is provided above the placement table (11).

2. A wind turbine blade fatigue testing device according to claim 1, characterized in that: The clamping assembly comprises two movable grooves (14) arranged at the upper end of the placement table (11), U-shaped frames (15) are slidably connected in the two movable grooves (14), threaded rods (17) are rotatably connected to the two U-shaped frames (15), the upper ends of the two threaded rods (17) are fixedly connected to knobs (16), the two threaded rods (17) are threadedly connected to threaded sleeves (18), and the lower ends of the two threaded sleeves (18) are fixedly connected to pressure plates (20).

3. A wind turbine blade fatigue testing device according to claim 2, characterized in that: Two telescopic rods (19) are fixedly connected to the inner tops of the two U-shaped frames (15), and the telescopic end of each telescopic rod (19) is fixedly connected to the upper end of the pressing plate (20).

4. A wind turbine blade fatigue testing device according to claim 1, characterized in that: Two pneumatic rods (4) are fixedly connected to the upper end of the detection chamber (2), the telescopic ends of the two pneumatic rods (4) are commonly fixedly connected to a fixing plate (9), and the left side of the fixing plate (9) is fixedly connected to a blocking door (3).

5. A wind turbine blade fatigue testing device according to claim 1, characterized in that: A second motor (6) is installed on the rear side of the detection chamber (2); the output shaft end of the second motor (6) extends into the detection chamber (2) and is fixedly connected to a screw rod (13); a hollow plate (12) is threadedly connected to the screw rod (13); the hollow plate (12) is slidably connected to the right inner wall of the detection chamber (2); and a plurality of air outlets are provided at the lower end of the hollow plate (12).

6. A wind turbine blade fatigue testing device according to claim 5, characterized in that: An air pump (7) is installed at the upper end of the detection chamber (2); the air outlet end of the air pump (7) is connected to the hollow plate (12) via a connecting pipe (8); and the connecting pipe (8) is a hose.

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