A fan blade strength detection device

Abstract

The utility model provides a kind of fan blade strength detection device, belong to blade strength detection technical field, including base and its top is connected with support plate, support plate center top is connected with limiting component, support plate top is rotatably connected with blade connecting piece, blade connecting piece side is equipped with a plurality of blade that is circumferentially distributed, base top is connected with detection component, base top is connected with push component, the limiting component includes with the support plate top connection screw rod, screw rod top is connected with rotating knob in screw thread, rotating knob center is equipped with internal thread hole, internal thread hole is connected with screw rod in screw thread, to the problem that traditional device can only carry out strength detection to open class blade, the utility model can carry out strength detection to laterally wrapped blade by the mode of rotation measurement.

Description

Technical Field

[0001] This utility model relates to the field of blade strength testing technology, specifically to a wind turbine blade strength testing device. Background Technology

[0002] Wind turbine blades have very high requirements for materials. They not only need to be lightweight, but also have high strength, corrosion resistance, and fatigue resistance. Therefore, wind turbine manufacturers now widely use composite materials to manufacture wind turbine blades, with composite materials accounting for up to 90% of the total weight of the blades. The materials used in blade manufacturing have evolved from the initial linen covering wooden boards to steel, aluminum alloys, and now composite materials.

[0003] Chinese patent CN223122732U discloses a wind turbine blade strength testing device for testing wind turbine blades.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: In actual use, the above solutions can only detect open-shaped wind turbine blades. For wind turbine blades with side wrapping, the detection compatibility of the above devices is low.

[0005] This invention proposes a wind turbine blade strength testing device to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to enable continuous strength testing of wind turbine blades with side wrapping components, thereby reducing the testing difficulty and increasing compatibility with different types of wind turbine blades, thus overcoming the problems mentioned in the background art.

[0007] Based on the above technical concept, the technical solution adopted by this utility model is as follows:

[0008] A wind turbine blade strength testing device includes a base and a support plate connected to its top. A limiting component is connected to the top of the center of the support plate. A blade connector is rotatably connected to the top of the support plate. Several blades are arranged in a circular pattern on the side of the blade connector. A testing component is connected to the top of the base, and a pushing component is connected to the top of the base.

[0009] Further defining the above technical solution, the limiting component includes a threaded rod connected to the top of the support plate, a rotating knob threadedly connected to the top of the threaded rod, and an internal threaded hole at the center of the rotating knob, which is threadedly connected to the threaded rod. The combination of the threaded rod and the rotating knob can effectively improve the limiting and fixing effect on the blade connector.

[0010] Further defining the above technical solution, the bottom of the rotating knob is provided with a pressing element, which is circular in shape. A threaded rod passes through the center of the pressing element, and a tapered guide is connected to the bottom of the pressing element. The tapered guide has a sharp bottom and faces the blade connector. The tapered guide can ensure that the threaded rod is always located at the center inside the blade connector, thereby ensuring the accurate detection position of the device.

[0011] Further defining the above technical solution, the detection component includes a detection bracket connected to the top of the base, and an elastic telescopic column is connected to the side of the detection bracket. The elastic telescopic column extends through the detection bracket, and the elastic telescopic column can ensure stable contact between the subsequent connecting plate and the outer arc surface of the blade connector, thereby reducing the detection error of the sensor.

[0012] Further defining the above technical solution, the elastic telescopic column is connected to a connecting plate at its elastic telescopic end. A through hole is provided at the center of the connecting plate. A sensor is connected to the side of the connecting plate away from the blade connector at the center. The sensor is equipped with a probe that passes through the through hole and faces the blade connector. The combination of the sensor and the probe can detect the flatness of the blade surface, thereby performing sensor detection on the blade after it is pushed by the pushed component, and thus determining whether the blade has deformed.

[0013] Further defining the above technical solution, the pushing component includes an electric telescopic rod connected to the side of the test bracket, the telescopic end of the electric telescopic rod passing through the test bracket, and a connector being connected to the telescopic end of the electric telescopic rod. The combination of the electric telescopic rod and the connector enables the adjustment of the blade pushing position, thereby allowing adjustment according to the shape of different blades.

[0014] Further defining the above technical solution, the connector is provided with a through hole, and a locking knob is provided on the other side of the connector. The locking knob passes through the connector and is threadedly connected to the telescopic end of the electric telescopic rod. A connecting post is connected to one end of the connector away from the telescopic end of the electric telescopic rod, and a pushing member is connected to the other end of the connecting post. The combination of the pushing member and the connecting post can prevent interference between the connector and the blade.

[0015] Further defining the above technical solution, the pushing member contacts the outer surface of the blade, the blade connector has a through hole at its center, the threaded rod passes through the through hole at the center of the blade connector, the blade connectors are symmetrically arranged on both sides of the blade, the tapered guide contacts and presses against the top of the blade connector, and the outer arc surface of the tapered guide has a damping layer. The combination of the tapered guide and the damping layer can adjust the magnitude of the rotational damping of the blade connector, thereby adjusting the pressure on the blade during the pushing process of the pushing member, and thus achieving different levels of detection effect.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Accurate installation: The tapered guide can accurately limit the movement of blade connectors with different inner diameters, ensuring that the threaded rod is always located at the center of the blade connector.

[0018] 2. The detection intensity is adjustable. By rotating the knob, the conical guide can be driven to squeeze the side of the blade connector, thereby forming rotational resistance. By adjusting the magnitude of the rotational damping, the intensity of the pusher on the outer side of the blade can be adjusted.

[0019] 3. Accurate detection: The sensor can adjust the flatness of the blade surface after it is pushed, thereby achieving automated strength detection. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the blade structure in a wind turbine blade strength testing device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the elastic telescopic column in the wind turbine blade strength testing device of this utility model;

[0023] Figure 3 This is a schematic diagram of the connecting component in a wind turbine blade strength testing device of this utility model.

[0024] The components are as follows: 1. Base; 2. Support plate; 3. Blade connector; 4. Blade; 5. Limiting component; 501. Threaded rod; 502. Rotating knob; 503. Pressing component; 504. Conical guide component; 6. Detection component; 601. Detection bracket; 602. Elastic telescopic column; 603. Connecting plate; 604. Sensor; 7. Pushing component; 701. Test bracket; 702. Electric telescopic rod; 703. Connecting component; 704. Locking knob; 705. Connecting column; 706. Pushing component. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-3 This utility model will be described in further detail.

[0026] Example 1: This example provides a wind turbine blade strength testing device, such as... Figures 1-3As shown, it includes a base 1 and a support plate 2 connected to its top. A limiting component 5 is connected to the top of the center of the support plate 2. A blade connector 3 is rotatably connected to the top of the support plate 2. Several blades 4 are arranged in a circular pattern on the side of the blade connector 3. A detection component 6 is connected to the top of the base 1. A pushing component 7 is connected to the top of the base 1.

[0027] The limiting component 5 includes a threaded rod 501 connected to the top of the support plate 2. A rotating knob 502 is threadedly connected to the top of the threaded rod 501. The rotating knob 502 has an internal threaded hole at its center, which is threadedly connected to the threaded rod 501. A pressing component 503 is provided at the bottom of the rotating knob 502. The pressing component 503 is annular, and the threaded rod 501 passes through the center of the pressing component 503. A tapered guide 504 is connected to the bottom of the pressing component 503. The bottom of the tapered guide 504 is sharp, and the tapered guide 504 faces the blade connector 3. The limiting component 5 can accurately fix the position of the blade connector 3, so that the position of the blade can be kept consistent during the detection process of this device, thus maintaining the uniformity of the detection.

[0028] The detection component 6 includes a detection bracket 601 connected to the top of the base 1. An elastic telescopic column 602 is connected to the side of the detection bracket 601, and the elastic telescopic end of the elastic telescopic column 602 passes through the detection bracket 601.

[0029] The elastic telescopic column 602 is connected to a connecting plate 603 at its elastic telescopic end. A through hole is provided at the center of the connecting plate 603. A sensor 604 is connected to the side of the connecting plate 603 away from the blade connector 3. The sensor 604 is equipped with a probe that passes through the through hole and faces the blade connector 3.

[0030] The pushing component 7 includes a test bracket 701. An electric telescopic rod 702 is connected to the side of the test bracket 701. The telescopic end of the electric telescopic rod 702 passes through the test bracket 701. A connector 703 is connected to the telescopic end of the electric telescopic rod 702.

[0031] The specific working principle is as follows: This device can effectively improve the detection accuracy of turbine blade 4. Compared with traditional devices, the detection process of this device is more automated and avoids the introduction of human error in the detection process. Furthermore, this device is more suitable for the detection of turbine blade 4.

[0032] Example 2: This example provides a wind turbine blade strength testing device, such as... Figures 1-3As shown, the connector 703 has a through hole, and the other side of the connector 703 has a locking knob 704. The locking knob 704 passes through the connector 703 and is threadedly connected to the telescopic end of the electric telescopic rod 702. The end of the connector 703 away from the telescopic end of the electric telescopic rod 702 is connected to a connecting post 705, and the other end of the connecting post 705 is connected to a pushing member 706. The pushing member 706 contacts the outer surface of the blade 4. The blade connector 3 has a through hole at its center, and the threaded rod 501 passes through the through hole at the center of the blade connector 3. The blade connector 3 is symmetrically arranged on both sides of the blade 4. The tapered guide 504 contacts and presses against the top of the blade connector 3. The outer arc surface of the tapered guide 504 is provided with a damping layer.

[0033] The specific working principle is as follows: This device can effectively improve the strength detection effect and accuracy of turbine blade 4. When this device is used, the blade connector 3 is placed on the top of the support plate 2 so that the threaded rod 501 passes through the through hole in the center of the blade connector 3, which facilitates the subsequent fixing of the blade connector 3. By rotating the knob 502, the tapered guide 504 can be moved downward, so that it contacts and squeezes the blade connector 3. During the contact process, the blade connector 3 moves under the guidance of the tapered guide 504 until the center of the threaded rod 501 coincides with the center of the blade connector 3. At this time, by rotating the knob 502, the squeezing degree between the tapered guide 504 and the blade connector 3 can be adjusted, thereby adjusting the rotation damping of the blade connector 3.

[0034] Then, the electric telescopic rod 702 is activated. The electric telescopic rod 702 drives the connecting piece 703 to slide linearly with a fixed thrust. The tilt angle of the connecting piece 703 can be adjusted through the locking knob 704, so as to make adaptive adjustments according to the different shapes of the blade 4, so that the pushing piece 706 and the blade 4 are in full contact, ensuring that the pushing effect of the device on the blade 4 is stable. When the pushing piece 706 pushes the blade 4, the blade 4 is squeezed. Due to the large pushing force of the electric telescopic rod 702, the blade connecting piece 3 rotates, so that the new blade 4 rotates to the front of the pushing piece 706. The pressure on the blade 4 is the thrust of the electric telescopic rod 702 minus the rotational friction.

[0035] Subsequently, when the blade 4 rotates to the side of the sensor 604, the sensor 604 detects the surface flatness of the blade 4, thereby determining whether the blade 4 has deformed during the pushing process, and thus determining the strength of the blade 4.

[0036] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments, which is intended to enable those skilled in the art to understand and apply the present invention. However, it should not be assumed that the specific implementation of the present invention is limited to these descriptions.

Claims

1. A wind turbine blade strength testing device, comprising a base (1) and a support plate (2) connected to its top, characterized in that, A limiting component (5) is connected to the top of the center of the support plate (2). A blade connector (3) is rotatably connected to the top of the support plate (2). Several blades (4) are arranged in a circular pattern on the side of the blade connector (3). A detection component (6) is connected to the top of the base (1). A pushing component (7) is connected to the top of the base (1).

2. The wind turbine blade strength testing device according to claim 1, characterized in that, The limiting component (5) includes a threaded rod (501) connected to the top of the support plate (2). A rotating knob (502) is threadedly connected to the top of the threaded rod (501). An internal threaded hole is provided at the center of the rotating knob (502), and the internal threaded hole is threadedly connected to the threaded rod (501).

3. The wind turbine blade strength testing device according to claim 2, characterized in that, The rotary knob (502) has a pressing part (503) at the bottom. The pressing part (503) is in the shape of a ring. The threaded rod (501) passes through the center of the pressing part (503). A tapered guide (504) is connected to the bottom of the pressing part (503). The bottom of the tapered guide (504) is sharp and the tapered guide (504) faces the direction of the blade connector (3).

4. The wind turbine blade strength testing device according to claim 3, characterized in that, The detection component (6) includes a detection bracket (601) connected to the top of the base (1), and an elastic telescopic column (602) is connected to the side of the detection bracket (601). The elastic telescopic column (602) has its elastic telescopic end penetrating through the detection bracket (601).

5. The wind turbine blade strength testing device according to claim 4, characterized in that, The elastic telescopic column (602) is connected to a connecting plate (603) at its elastic telescopic end. A through hole is provided at the center of the connecting plate (603). A sensor (604) is connected to the side of the connecting plate (603) away from the blade connector (3). The sensor (604) is provided with a probe, which passes through the through hole and faces the blade connector (3).

6. The wind turbine blade strength testing device according to claim 5, characterized in that, The pushing component (7) includes a test bracket (701), an electric telescopic rod (702) connected to the side of the test bracket (701), the telescopic end of the electric telescopic rod (702) passing through the test bracket (701), and a connector (703) docked to the telescopic end of the electric telescopic rod (702).

7. The wind turbine blade strength testing device according to claim 6, characterized in that, The connector (703) is provided with a through hole, and a locking knob (704) is provided on the other side of the connector (703). The locking knob (704) passes through the connector (703) and is threadedly connected to the telescopic end of the electric telescopic rod (702). A connecting post (705) is connected to one end of the connector (703) away from the telescopic end of the electric telescopic rod (702), and a pusher (706) is connected to the other end of the connecting post (705).

8. The wind turbine blade strength testing device according to claim 7, characterized in that, The pusher (706) contacts the outer side of the blade (4), the blade connector (3) has a through hole at its center, the threaded rod (501) passes through the through hole at the center of the blade connector (3), the blade connector (3) is symmetrically arranged on both sides of the blade (4), the tapered guide (504) contacts and presses against the top of the blade connector (3), and the outer arc surface of the tapered guide (504) is provided with a damping layer.

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