Test device for testing the fatigue life of a fan blade

Abstract

The utility model discloses a test equipment for testing the fatigue life of fan blade, including frame, mounting seat, drive assembly and counting module, and mounting seat is movably arranged in frame, and mounting seat is used for installing fan blade, and drive assembly is arranged in frame, and drive assembly is used for driving mounting seat reciprocating movement, and counting module is arranged in frame, and counting module is used for counting the number of reciprocating movement of mounting seat, can measure the fatigue life of fan blade.

Description

Technical Field

[0001] This utility model relates to the field of fan blade fatigue life testing technology, and in particular to a testing device for testing the fatigue life of fan blades. Background Technology

[0002] During operation, the fan blades move up and down, and the through-ribs also move up and down repeatedly. The root is subjected to alternating stress, which can lead to fatigue fracture after long-term operation. Therefore, it is necessary to understand the fatigue life of the fan blades to ensure safety. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a testing device for testing the fatigue life of fan blades, capable of testing the fatigue life of fan blades.

[0004] A testing device for testing the fatigue life of fan blades according to an embodiment of the present invention includes:

[0005] frame;

[0006] A mounting base is movably disposed on the frame, and the mounting base is used to mount the fan blades;

[0007] A drive assembly is provided on the frame, and the drive assembly is used to drive the mounting base to reciprocate.

[0008] A counting module is provided on the frame, and the counting module is used to count the number of reciprocating movements of the mounting base.

[0009] The testing device for testing the fatigue life of fan blades according to embodiments of the present invention has at least the following beneficial effects:

[0010] The fan blade includes a blade body and a hub connected to one end of the blade body. The hub is mounted on a mounting base. When the drive assembly drives the mounting base to move back and forth, the blade body swings relative to the hub. The counting module calculates the number of swings of the blade body by counting the number of reciprocating movements of the mounting base, thereby measuring the fatigue life of the fan blade.

[0011] According to some embodiments of the present invention, a guide structure is provided between the mounting base and the frame.

[0012] According to some embodiments of the present invention, the guide structure includes a guide hole provided in the frame and a guide post provided in the mounting base, the guide post passing through the guide hole and abutting against the side wall of the guide hole.

[0013] According to some embodiments of the present invention, the driving assembly includes a driving member and a cam member connected to the output shaft of the driving member. The cam member is rotatably connected to the mounting base to cause the mounting base to reciprocate.

[0014] According to some embodiments of the present invention, the counting module includes a connecting frame and a limit switch disposed on the connecting frame. The connecting frame is connected to the frame, and the mounting base can trigger the limit switch to count the number of reciprocating movements of the mounting base.

[0015] According to some embodiments of the present invention, a protective component is also included, which is disposed on the frame and has a protective cavity, in which the blade of the fan is housed.

[0016] According to some embodiments of the present invention, the protective component includes a first protective member and a second protective member. The first protective member is movably disposed on the second protective member. The first protective member is provided with a first protective groove, and the second protective member is provided with a second protective groove. The first protective groove and the second protective groove communicate to form the protective cavity. An adjustment component is provided between the first protective member and the second protective member, and the adjustment component is used to adjust the length of the protective cavity.

[0017] According to some embodiments of the present invention, the adjusting assembly includes a lead screw and an adjusting member connected to one end of the lead screw. The lead screw is rotatably disposed on the first protective member and threadedly connected to the second protective member.

[0018] According to some embodiments of the present invention, two protective components are configured, and the two protective components are respectively located on opposite sides of the mounting base, with the blade of the fan being housed in the corresponding protective cavity.

[0019] According to some embodiments of the present invention, the frame includes a support platform and a plurality of support legs disposed on the support platform, the mounting base is located on the upper side of the support platform, and the drive assembly is located on the lower side of the support platform.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of a testing device for testing the fatigue life of fan blades according to an embodiment of the present invention.

[0023] Figure 2 This is a top view of a testing device for testing the fatigue life of fan blades according to an embodiment of the present invention.

[0024] Figure 3 This is a side view of a testing device for testing the fatigue life of fan blades according to an embodiment of the present invention.

[0025] Figure 4 This is a front view of a testing device for testing the fatigue life of fan blades according to an embodiment of the present invention.

[0026] Figure label:

[0027] Frame 100, support platform 110, support leg 120, mounting base 200, guide column 210, drive assembly 300, drive component 310, cam component 320, counting module 400, connecting frame 410, limit switch 420, protection cavity 501, first protective component 510, first protective groove 511, second protective component 520, second protective groove 521, lead screw 530, adjusting component 540, blade hub 610, blade body 620. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] In related technologies, when a fan is running, the fan blades move up and down, and the through ribs also move up and down repeatedly. The root is subjected to alternating stress, which can lead to fatigue fracture after long-term operation. Therefore, it is necessary to understand the fatigue life of the fan blades to ensure safety.

[0033] Reference Figures 1 to 4 According to an embodiment of the present invention, a testing device for testing the fatigue life of a fan blade includes a frame 100, a mounting base 200, a drive assembly 300, and a counting module 400. The mounting base 200 is movably disposed on the frame 100 and is used to mount the fan blade. The drive assembly 300 is disposed on the frame 100 and is used to drive the mounting base 200 to reciprocate. The counting module 400 is disposed on the frame 100 and is used to count the number of reciprocating movements of the mounting base 200. Thus, the fatigue life of the fan blade can be measured.

[0034] For example, the fan blade includes a blade body 620 and a hub 610 connected to one end of the blade body 620. The hub 610 is mounted on the mounting base 200. When the drive assembly 300 drives the mounting base 200 to reciprocate, the blade body 620 swings relative to the hub 610. The counting module 400 calculates the number of swings of the blade body 620 by counting the number of reciprocating movements of the mounting base 200, thereby measuring the fatigue life of the fan blade.

[0035] It should be noted that once the statistical value of the counting module 400 reaches a certain value, if no cracks occur between the blade body 620 and the hub 610 or the blade body 620 is not broken, the fatigue life of the fan blade can be determined to be qualified. This will not be elaborated further here.

[0036] In some embodiments of this utility model, a guide structure is provided between the mounting base 200 and the frame 100, which can guide the mounting base 200 so that the mounting base 200 can move in a preset direction, thereby improving the movement stability of the mounting base 200.

[0037] In some embodiments of this utility model, the guide structure includes a guide hole provided in the frame 100 and a guide post 210 provided in the mounting base 200. The guide post 210 passes through the guide hole and abuts against the side wall of the guide hole, which can guide the mounting base 200 so that the mounting base 200 moves in a preset direction, thereby improving the movement stability of the mounting base 200.

[0038] For example, four guide posts 210 are configured, and the four guide posts 210 are respectively located at the corresponding corners of the mounting base 200. Four guide holes are configured accordingly. The guide posts 210 pass through the corresponding guide holes and abut against the side wall of the guide holes, which can guide the mounting base 200 so that the mounting base 200 moves in a preset direction, thereby improving the movement stability of the mounting base 200.

[0039] It should be noted that the positions of the guide hole and the guide post 210 can be interchanged. For example, the guide post 210 can be located on the frame 100 and the guide hole can be located on the mounting base 200. No restrictions are imposed here.

[0040] As another implementation, the guide structure can also be a linear bearing, and there is no limitation on this.

[0041] In some embodiments of this utility model, the drive assembly 300 includes a drive member 310 and a cam member 320 connected to the output shaft of the drive member 310. The cam member 320 is rotatably connected to the mounting base 200 so that the mounting base 200 reciprocates, thereby increasing the moving speed of the mounting base 200 and reducing the time for measuring the life of the fan blade, thereby improving the testing efficiency of the testing equipment used to test the fatigue life of the fan blade.

[0042] For example, the drive component 310 is a servo motor or a stepper motor. When the drive component 310 is working, it drives the cam component 320 to rotate rapidly. Since the cam component 320 is rotatably connected to the mounting base 200, the cam component 320 can drive the mounting base 200 to move back and forth, which can speed up the movement speed of the mounting base 200, thereby reducing the time for measuring the life of the fan blade and improving the testing efficiency of the testing equipment used to test the fatigue life of the fan blade.

[0043] In another implementation, the drive unit 310 can also be a cylinder, which drives the mounting base 200 to move back and forth. This is not a limitation.

[0044] In some embodiments of this utility model, the counting module 400 includes a connecting frame 410 and a limit switch 420 disposed on the connecting frame 410. The connecting frame 410 is connected to the frame 100. The mounting base 200 can trigger the limit switch 420 to count the number of reciprocating movements of the mounting base 200, which facilitates the measurement of the fatigue life of the fan blades.

[0045] For example, the limit switch 420 is located above the mounting base 200, which can move up and down. When the distance between the mounting base 200 and the limit switch 420 is at its minimum, the mounting base 200 triggers the limit switch 420 so that the limit switch 420 can count the number of reciprocating movements of the mounting base 200, which makes it easier to measure the fatigue life of the fan blade.

[0046] As another implementation, the limit switch 420 can also be replaced by an infrared signal transmitter and an infrared signal receiver. The infrared signal receiver is used to receive the infrared rays emitted by the infrared signal transmitter. When the mounting base 200 blocks the infrared signal transmitter, the infrared signal receiver is triggered. It can also count the number of reciprocating movements of the mounting base 200, which is not limited here.

[0047] In some embodiments of this utility model, a protective component is also included. The protective component is disposed on the frame 100 and has a protective cavity 501. The blade body 620 of the fan blade is housed in the protective cavity 501, which can improve the safety of the test equipment used to test the fatigue life of the fan blade.

[0048] For example, the protective component is located on one side of the mounting base 200. When testing the fatigue life of the fan blade, the blade body 620 is housed in the protective cavity 501, which can improve the safety of the test equipment used to test the fatigue life of the fan blade.

[0049] In some embodiments of this utility model, the protective component includes a first protective member 510 and a second protective member 520. The first protective member 510 is movably disposed on the second protective member 520. The first protective member 510 is provided with a first protective groove 511, and the second protective member 520 is provided with a second protective groove 521. The first protective groove 511 and the second protective groove 521 communicate to form a protective cavity 501. An adjustment component is provided between the first protective member 510 and the second protective member 520. The adjustment component is used to adjust the length of the protective cavity 501, which can adapt to fan blades of different lengths, thereby improving the versatility of the testing equipment used to test the fatigue life of fan blades.

[0050] In some embodiments of this utility model, the adjustment component includes a lead screw 530 and an adjustment member 540 connected to one end of the lead screw 530. The lead screw 530 is rotatably disposed on the first protective member 510 and threadedly connected to the second protective member 520, which can adjust the length of the protective cavity 501 to adapt to fan blades of different lengths, thereby improving the versatility of the testing equipment used to test the fatigue life of fan blades.

[0051] For example, the end of the lead screw 530 away from the adjusting member 540 is rotatably connected to the first protective member 510. When the adjusting member 540 rotates, the lead screw 530 drives the second protective member 520 to move in the direction close to or away from the mounting base 200 through threaded transmission, so as to adjust the length of the protective cavity 501, which can adapt to fan blades of different lengths, thereby improving the versatility of the testing equipment used to test the fatigue life of fan blades.

[0052] As an alternative implementation, the adjusting element 540 can be replaced by a stepper motor, which can automatically change the length of the protective cavity 501, thereby improving the automation level of the testing equipment used to test the fatigue life of the fan blades.

[0053] In another embodiment, the adjustment assembly includes a rack disposed on the second protective member 520 and a gear rotatably disposed on the frame 100. The gear meshes with the rack and can also adjust the length of the protective cavity 501, which is not limited here.

[0054] In some embodiments of this utility model, two protective components are configured, which are located on opposite sides of the mounting base 200. The blade body 620 of the fan blade is housed in the corresponding protective cavity 501, which can improve the safety of the test equipment used to test the fatigue life of the fan blade.

[0055] In some embodiments of this utility model, the frame 100 includes a support platform 110 and a plurality of support feet disposed on the support platform 110. The mounting base 200 is located on the upper side of the support platform 110, and the drive assembly 300 is located on the lower side of the support platform 110. This can reduce the overall height of the testing equipment for testing the fatigue life of fan blades, thereby reducing the overall volume of the testing equipment for testing the fatigue life of fan blades, thus facilitating the packaging or transportation of the testing equipment for testing the fatigue life of fan blades.

[0056] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A testing device for testing the fatigue life of fan blades, characterized in that, include: Rack (100); A mounting base (200) is movably disposed on the frame (100), and the mounting base (200) is used to mount the fan blades; A drive assembly (300) is disposed on the frame (100), and the drive assembly (300) is used to drive the mounting base (200) to reciprocate; A counting module (400) is provided on the frame (100), and the counting module (400) is used to count the number of reciprocating movements of the mounting base (200).

2. The testing equipment for testing the fatigue life of fan blades according to claim 1, characterized in that, A guide structure is provided between the mounting base (200) and the frame (100).

3. The testing equipment for testing the fatigue life of fan blades according to claim 2, characterized in that, The guide structure includes a guide hole provided in the frame (100) and a guide post (210) provided in the mounting base (200). The guide post (210) passes through the guide hole and abuts against the side wall of the guide hole.

4. The testing equipment for testing the fatigue life of fan blades according to claim 1, characterized in that, The drive assembly (300) includes a drive member (310) and a cam member (320) connected to the output shaft of the drive member (310). The cam member (320) is rotatably connected to the mounting base (200) to cause the mounting base (200) to reciprocate.

5. The testing equipment for testing the fatigue life of fan blades according to claim 1, characterized in that, The counting module (400) includes a connecting frame (410) and a limit switch (420) disposed on the connecting frame (410). The connecting frame (410) is connected to the frame (100). The mounting base (200) can trigger the limit switch (420) to count the number of reciprocating movements of the mounting base (200).

6. The testing equipment for testing the fatigue life of fan blades according to claim 1, characterized in that, It also includes a protective component, which is disposed on the frame (100) and has a protective cavity (501) in which the blade (620) of the fan is housed.

7. The testing equipment for testing the fatigue life of fan blades according to claim 6, characterized in that, The protective component includes a first protective member (510) and a second protective member (520). The first protective member (510) is movably disposed on the second protective member (520). The first protective member (510) has a first protective groove (511), and the second protective member (520) has a second protective groove (521). The first protective groove (511) and the second protective groove (521) communicate to form the protective cavity (501). An adjustment component is provided between the first protective member (510) and the second protective member (520) for adjusting the length of the protective cavity (501).

8. The testing equipment for testing the fatigue life of fan blades according to claim 7, characterized in that, The adjustment assembly includes a lead screw (530) and an adjustment member (540) connected to one end of the lead screw (530). The lead screw (530) is rotatably disposed on the first protective member (510) and threadedly connected to the second protective member (520).

9. The testing equipment for testing the fatigue life of fan blades according to claim 6, characterized in that, Two protective components are configured, and the two protective components are respectively located on opposite sides of the mounting base (200), and the blade body (620) of the fan blade is housed in the corresponding protective cavity (501).

10. The testing equipment for testing the fatigue life of fan blades according to claim 1, characterized in that, The frame (100) includes a support platform (110) and a plurality of support legs disposed on the support platform (110), the mounting base (200) is located on the upper side of the support platform (110), and the drive assembly (300) is located on the lower side of the support platform (110).

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