Testing device for fan blade production

Abstract

The utility model discloses a testing device for fan blade production, which belongs to the technical field of fan testing, and comprises a base, a double-end motor is mounted at the upper end of the base through screws, a blade fixing tool is fixed at each output shaft of the double-end motor, protective covers are fixed at two ends of the base through screws, and the protective covers are positioned outside the blade fixing tools. An output shaft of the double-end motor penetrates through the interior of the protective cover, and the end, away from the double-end motor, of the protective cover is bonded with a telescopic closing bag; the testing device is easy and convenient to install and stable in the testing process after installation, the protection cover structure is upgraded, and the protection effect is further enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of fan testing, and in particular relates to a testing device for fan blade production. Background Art

[0002] The performance of wind turbine blades needs to be tested before they are loaded as finished products. Wind turbine blades are one of the core components of wind turbines. Wind turbine blades have very high requirements on materials. They not only need to be light in weight, but also need to have high strength, corrosion resistance and fatigue resistance. Therefore, wind turbine manufacturers now widely use composite materials to manufacture wind turbine blades. The materials used to manufacture blades have evolved from the original linen cloth covered with wooden boards to steel, aluminum alloy, and now to composite materials.

[0003] Application No. 201921385524.1 discloses a test device for wind turbine blade production, including a test device body and a double-headed motor, the front and rear ends of the test device body are fixedly provided with a test chamber, and the interior of the test chamber is fixedly provided with a placement groove, the outer side of the placement groove is provided with a fixed flange, and the outer side of the fixed flange is connected to a protective cover, the lower end of the test device body is connected to a base, the double-headed motor is installed in the central interior of the test device body, and the front and rear ends of the double-headed motor are fixedly connected with a rotating bearing, the outer side of the rotating bearing is connected to a linkage rod, and the outside of the linkage rod is fixedly wrapped with a fixed block. The test device for wind turbine blade production, through the test chamber and the protective cover through the fixed flange to form a disassembly structure, the protective cover can be aligned and connected with the test chamber, and the protective cover and the test chamber are fixedly connected through the fixed flange, which can well protect the safety of the user.

[0004] The existing testing device has too many operating steps when fixing the fan blades, and the connection through the magnetic layer makes the installation extremely unstable, so we propose a testing device for fan blade production. Utility Model Content

[0005] The utility model aims to provide a testing device for fan blade production, which is easy to install, stable during the test after installation, and has an upgraded protective cover structure to further enhance the protective effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a test device for the production of fan blades, the test device for the production of fan blades comprising a base, a double-headed motor is screwed onto the upper end of the base, a blade fixing tool is fixed at each output shaft of the double-headed motor, protective covers are also screwed onto both ends of the base, the protective cover is located outside the blade fixing tool, the output shaft of the double-headed motor is passed through the inside of the protective cover, and a telescopic storage bag is bonded to the end of the protective cover away from the double-headed motor.

[0007] Furthermore, the blade fixing tooling includes a sleeve inserted into the output shaft, a positioning groove is provided in the middle of the sleeve, a top contact block sliding on the sleeve is provided on one side of the positioning groove, and a number of top contact blocks are equidistantly arranged along the circumferential direction of the sleeve. A driving rod is threadedly connected to the inside of the sleeve, and the driving rod can drive the top contact block to slide by rotating.

[0008] Furthermore, the front end of the driving rod is stepped, and a protrusion is fixed in the circumferential direction at the front end of the driving rod. The number of protrusions is consistent with the number of the top contact blocks, and a rotating part is fixed to the driving rod away from the protrusion end.

[0009] Furthermore, a positioning ring is fixed on the outside of the sleeve, and the positioning ring and the top support block are respectively located on both sides of the positioning groove. The positioning ring is provided with a ring sleeve slidably connected to the outside of the sleeve toward the positioning groove, and a spring is fixed between the ring sleeve and the positioning ring, and several springs are provided along the circumferential direction of the ring sleeve.

[0010] A telescopic rubber sleeve is bonded to the middle of the protective cover.

[0011] The beneficial effects of the utility model are:

[0012] 1. Change the magnetic connection installation method, directly install the fan blade assembly, and rotate the rotating part on the driving rod to fix the fan blade assembly. At the same time, use mechanical structures such as screw structures and springs to lock it to ensure the stability of the fan blade assembly during the test.

[0013] 2. Install a telescopic bag on the protective cover to avoid using flanges to install the protective structure, further reduce the operating steps and improve test efficiency.

[0014] 3. A retractable rubber sleeve is bonded to the middle of the protective cover. If the blade breaks during the test, the rubber sleeve with a retractable effect can be used to remove part of the energy to avoid excessive impact on the protective cover and extend the service life of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a testing device for fan blade production provided by the utility model;

[0016] Figure 2 This is a schematic diagram of the installation of a blade fixing tool for a fan blade production test device provided by the utility model;

[0017] Figure 3 This is a schematic diagram of a blade fixing tool structure of a fan blade production test device provided by the utility model;

[0018] Figure 4 The utility model provides a schematic diagram of the interior of a blade fixing tool of a test device for producing fan blades.

[0019] In the figure: 1. base; 2. double-headed motor; 3. blade fixing tooling; 4. protective cover; 5. telescopic storage bag; 6. sleeve; 7. positioning groove; 8. top contact block; 9. driving rod; 10. protrusion; 11. rotating part; 12. positioning ring; 13. ring sleeve; 14. spring; 15. telescopic rubber sleeve. DETAILED DESCRIPTION

[0020] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0021] Please also refer to Figures 1 to 4 , the fan blade production testing device of the utility model embodiment will be described in detail with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the test device for fan blade production includes a base 1, a double-headed motor 2 is screwed onto the upper end of the base 1, a blade fixing tool 3 is fixed to each output shaft of the double-headed motor 2, protective covers 4 are also screwed onto both ends of the base 1, the protective cover 4 is located outside the blade fixing tool 3, the output shaft of the double-headed motor 2 is passed through the protective cover 4, and a telescopic receiving bag 5 is bonded to the end of the protective cover 4 away from the double-headed motor 2.

[0023] In this embodiment, the telescopic pocket 5 used is a nylon mesh with an elastic rope pig nose buckle structure. The blade shaft assembly is mounted on the blade fixing tooling 3 to carry out blade testing. The specific blade fixing tooling 3 includes a sleeve 6 inserted into the output shaft, a positioning groove 7 is provided in the middle position of the sleeve 6, and a top contact block 8 sliding on the sleeve 6 is provided on one side of the positioning groove 7. Several top contact blocks 8 are equidistantly arranged along the circumferential direction of the sleeve 6, and a driving rod 9 is threadedly connected to the inside of the sleeve 6. The driving rod 9 can drive the top contact block 8 to slide by rotating. The front end of the driving rod 9 is stepped and located at the front end of the driving rod 9. A protrusion 10 is fixed in the circumferential direction. The number of protrusions 10 is consistent with the number of the top contact blocks 8. A rotating portion 11 is fixed to the end of the driving rod 9 away from the protrusion 10. A positioning ring 12 is fixed to the outside of the sleeve 6. The positioning ring 12 and the top support block are respectively located on both sides of the positioning groove 7. The positioning ring 12 is provided with a ring sleeve 13 slidably connected to the outside of the sleeve 6 toward the positioning groove 7. A spring 14 is fixed between the ring sleeve 13 and the positioning ring 12. Several springs 14 are arranged along the circumferential direction of the ring sleeve 13.

[0024] Specifically, the fan blade assembly is installed near the positioning groove 7 , and after installation, the fan blade assembly is fixed by the top contact block 8 and the ring sleeve 13 .

[0025] During installation, the rotating part 11 of the driving rod 9 is rotated to control the driving rod 9 to rotate along the internal thread of the sleeve 6, so that the protrusion 10 at the front end of the driving rod 9 rotates with the driving rod 9. When the protrusion 10 rotates to a position offset from the top contact block 8, the top contact block 8 automatically slides down into the sleeve 6. At this time, the fan blade assembly is put near the positioning groove 7 and it is abutted against the surface of the ring sleeve 13. After the abutment, the fan blade assembly is pressed and the rotating part 11 of the driving rod 9 is rotated again. At the same time, the protrusion 10 at the front end of the driving rod 9 abuts against the top contact block 8 again, and the top contact block 8 is lifted out of the sleeve 6, releasing the fan blade assembly. The fan blade assembly is clamped between the ring sleeve 13 and the top contact block 8 under the rebound action of the spring 14. Finally, the telescopic collection bag 5 is pulled to close the open mouth of the protective cover 4 and the test is started.

[0026] Meanwhile, a telescopic rubber sleeve 15 is bonded to the middle of the protective cover 4. If the blade breaks during the test, the rubber ring sleeve 13 with a telescopic effect can be used to unload part of the energy to avoid excessive impact on the protective cover 4 and extend the service life of the protective cover 4.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for fan blade production, characterized in that: The fan blade production test device comprises a base (1), a double-headed motor (2) is screwed onto the upper end of the base (1), a blade fixing tool (3) is fixed to each output shaft of the double-headed motor (2), protective covers (4) are screwed onto both ends of the base (1), the protective cover (4) is located outside the blade fixing tool (3), the output shaft of the double-headed motor (2) is inserted into the protective cover (4), and a telescopic bag (5) is bonded to the end of the protective cover (4) away from the double-headed motor (2).

2. A fan blade production testing device according to claim 1, characterized in that: The blade fixing tool (3) comprises a sleeve (6) inserted on the output shaft, a positioning groove (7) is provided in the middle of the sleeve (6), a top contact block (8) sliding on the sleeve (6) is provided on one side of the positioning groove (7), a plurality of top contact blocks (8) are provided at equal distances along the circumferential direction of the sleeve (6), a driving rod (9) is connected to the inner thread of the sleeve (6), and the driving rod (9) can drive the top contact block (8) to slide when it rotates.

3. A fan blade production testing device according to claim 2, characterized in that: The front end of the driving rod (9) is in a stepped shape. A protrusion (10) is fixed in the circumferential direction at the front end of the driving rod (9). The number of the protrusions (10) is consistent with the number of the top contact blocks (8). A rotating portion (11) is fixed at the end of the driving rod (9) away from the protrusion (10).

4. A fan blade production testing device according to claim 2, characterized in that: A positioning ring (12) is fixed on the outside of the sleeve (6), the positioning ring (12) and the supporting block are respectively located on both sides of the positioning groove (7), the positioning ring (12) is provided with a ring sleeve (13) slidably connected to the outside of the sleeve (6) on the side facing the positioning groove (7), a spring (14) is fixed between the ring sleeve (13) and the positioning ring (12), and a plurality of springs (14) are provided along the circumferential direction of the ring sleeve (13).

5. A fan blade production testing device according to claim 1, characterized in that: A telescopic rubber sleeve (15) is bonded to the middle of the protective cover (4).

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