Blade anchor bolt positioning and mounting rack of test bed

Abstract

The invention relates to the technical field of wind power experiment tables, in particular to a blade anchor bolt positioning mounting frame of a test bed, which comprises a support frame and positioning steel pipes, a positioning ring is arranged on the support frame, a plurality of positioning steel pipes are arranged on the positioning ring along the circumferential direction, and the positioning steel pipes penetrate through the support frame along the thickness direction of the support frame. According to the invention, the positioning ring is additionally arranged on the support frame, and the positioning steel pipe is arranged on the support frame through the positioning ring, so that the positioning steel pipe can provide a channel for the anchor bolt after the support frame is subsequently poured to form the test bed, and the flange plate can be quickly positioned on the test bed through the positioning steel pipe. Therefore, the construction process is simplified, and the construction period of the test bench is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of wind power test benches, and in particular to a blade anchor bolt positioning and mounting frame of a test bench. Background Art

[0002] Wind energy, a key clean and renewable energy source, accounts for an increasingly significant share of offshore wind power installed capacity. As wind turbine blades continue to grow in length and flexibility, relying solely on CAE simulations for full blade lifecycle simulations faces accuracy challenges. Therefore, physical testing is needed. For example, Publication No. CN202710300U discloses a full-scale structural fatigue testing apparatus for megawatt-class wind turbine blades. This apparatus employs an offline test bench, where external loads are applied to deform the blades for physical testing. The blades are connected to the test bench by installing flanges on the front and rear mounting surfaces of the test bench. These flanges are connected via anchor bolts, and the blades are then connected to the flange on the front mounting surface of the test bench. However, this connection method makes it difficult to align the flange holes on the front and rear mounting surfaces of the test bench after the test bench is cast in cement. This often requires repeated drilling and re-filling of the test bench holes. After the flanges are connected, the excess holes must be re-filled. This repeated drilling and re-filling process prolongs the test bench construction cycle. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a blade anchor bolt positioning and mounting frame for a test bench, which can shorten the construction period of the test bench.

[0004] In order to solve the above technical problems, the first technical solution adopted by the present invention is: a blade anchor positioning mounting frame of a test bench, including a support frame and a positioning steel pipe, the support frame is provided with a positioning ring, and a plurality of positioning steel pipes are arranged on the positioning ring along the circumferential direction, and the positioning steel pipe passes through the support frame along the thickness direction of the support frame.

[0005] The present invention has the beneficial effect of adding a positioning ring to the support frame, through which the positioning steel pipe is mounted on the support frame. This allows the positioning steel pipe to provide a channel for the anchor bolts after the support frame is subsequently cast to form the test bench, and the flange can be quickly positioned on the test bench via the positioning steel pipe. This simplifies the construction process and shortens the test bench construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a schematic structural diagram of a blade anchor bolt positioning and mounting frame of a test bench proposed by the present invention; Figure 2 This is a schematic diagram of the main structure of a blade anchor bolt positioning and mounting frame of a test bench proposed by the present invention; Figure 3 Figure 2 is a side view of a blade anchor positioning mounting rack of a test bed according to the present application; Figure 4 Figure 3 is a schematic view of the installation structure of a support frame of a blade anchor positioning mounting rack of a test bed on a platform according to the present application; Figure 5 Figure 4 is a schematic view of the structure of a support frame of a blade anchor positioning mounting rack of a test bed on a platform according to the present application; Label explanation: 1, support frame; 11, positioning ring; 12, support leg; 121, front leg; 122, rear leg; 123, reinforcing beam; 13, truss; 14, main steel pipe; 15, support piece; 16, lifting lug; 2, positioning steel pipe; 3, reinforcing piece; 4, steel beam; 5, test bed; 6, platform. DETAILED DESCRIPTION

[0007] To explain the technical content, the purpose and the effect of the present application in detail, the following will be explained in combination with the embodiments and the drawings.

[0008] Please refer to Figure 1 , Figure 2 and Figure 5 , the blade anchor positioning mounting rack of the test bed according to the present application, including support frame 1 and positioning steel pipe 2, the support frame 1 is provided with positioning ring 11, the positioning ring 11 is provided with multiple positioning steel pipes 2 along the circumference, the positioning steel pipe 2 penetrates the support frame 1 along the thickness direction of the support frame 1.

[0009] Working principle: the positioning ring 11 is added to the support frame 1 used to form the test bed 5, then the positioning steel pipe 2 is installed on the support frame 1 through the positioning ring 11 according to the flange hole on the flange plate; then the test bed 5 is formed by pouring cement, and then the anchor can pass through the test bed 5 to fix the two flange plates on the test bed 5.

[0010] In some embodiments, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the bottom of the support frame 1 is provided with a support leg 12, which includes a front support leg 121 and a rear support leg 122 arranged along the thickness direction of the support frame 1. The length of the front support leg 121 is greater than or equal to the length of the rear support leg 122. In physical testing of blades, vertical and horizontal loads are usually applied. By limiting the length of the front support leg 121 to be greater than the length of the rear support leg 122, an obtuse angle is formed between the assembly surface of the support frame 1 where the blade is mounted and the platform 6. In other words, an obtuse angle is formed between the assembly surface of the cast test bench 5 where the blade is mounted and the platform 6. This increases the distance between the installed blade and the platform 6, providing sufficient experimental space for blade deformation.

[0011] In certain embodiments, see Figure 4 As shown, both end surfaces of the support frame 1 along its thickness direction are assembly surfaces, and the angle between the assembly surface and the horizontal plane is C, which is 90° to 115°.

[0012] In certain embodiments, see Figure 3 As shown, the length of the front leg 121 is A, and the length of the rear leg 122 is B, with B ranging from 0.5m to 1m. The length of A is determined by the angle of C. B includes, but is not limited to, 0.5m, 0.6m, 0.7m, 0.8m, 0.9m, and 1m. C includes, but is not limited to, 90°, 95°, 100°, 105°, 110°, and 115°.

[0013] It is worth noting that the support leg 12 can be a support leg with a telescopic function.

[0014] In certain embodiments, see Figure 1 、 Figure 3 and Figure 4 As shown, the support leg 12 further includes a reinforcing beam 123 connected between the front support leg 121 and the rear support leg 122. The reinforcing beam 123 can enhance the strength of the support leg 12.

[0015] In certain embodiments, see Figure 1 、 Figure 3 and Figure 4 As shown, the support frame 1 is divided into at least two layers of trusses 13 along its thickness, and at least two layers of the trusses 13 are provided with positioning rings 11. Disassembling the support frame 1 into multiple layers of trusses 13 facilitates transportation. During assembly, only two adjacent trusses 13 need to be welded together using steel beams 4.

[0016] Preferably, the support frame 1 has three layers of trusses 13 , and each layer of trusses 13 is provided with a positioning ring 11 .

[0017] In certain embodiments, see Figure 1 and Figure 2As shown in FIG. 1, the support frame 1 is provided with a main steel pipe 14, and the positioning ring 11 surrounds the main steel pipe 14. The main steel pipe 14 can be used as a central passage for pouring the test bed 5, i.e. providing a maintenance passage for personnel to enter the blade.

[0018] It is worth mentioning that during construction, the reinforcing member 3 is welded in the main steel pipe 14 to ensure the strength of the support frame 1, and the reinforcing member 3 is removed after the concrete is cured.

[0019] In some embodiments, the main steel pipe 14 is provided with a through hole (not shown in the figure) on the pipe wall towards the bottom of the support frame 1. The through hole is used as a pouring hole for the lower concrete of the support of the test bed 5, so that the test bed 5 can be poured twice.

[0020] In some embodiments, please refer to Figure 1 and Figure 2 As shown in FIG. 1, the support frame 1 is provided with a support member 15, and the positioning ring 11 surrounds the support member 15. The support member 15 is provided to place the blade pitch motor in the installation space.

[0021] It is worth mentioning that during construction, the reinforcing member 3 is welded in the main steel pipe 14 to ensure the strength of the support frame 1, and the reinforcing member 3 is removed after the concrete is cured.

[0022] In some embodiments, please refer to Figures 1 to 4 As shown in FIG. 1, the support frame 1 is provided with a lifting lug 16. The lifting lug is used to lift the support frame 1 by a crane and place it on the corresponding platform 6 for construction.

[0023] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent transformation or direct or indirect application in the related technical field based on the content of the specification and drawings is also included in the patent protection scope of the present application.

Claims

1. A blade anchor bolt positioning mounting frame for a test bench, characterized by: The invention comprises a support frame and a positioning steel pipe. The support frame is provided with a positioning ring. A plurality of positioning steel pipes are circumferentially arranged on the positioning ring. The positioning steel pipes penetrate the support frame along the thickness direction of the support frame.

2. The blade anchor bolt positioning and mounting bracket of the test bench according to claim 1, characterized in that: The bottom of the support frame is provided with a support leg, and the support leg includes a front support leg and a rear support leg arranged along the thickness direction of the support frame, and the length of the front support leg is greater than or equal to the length of the rear support leg.

3. The blade anchor bolt positioning and mounting bracket of the test bench according to claim 2, characterized in that: The length of the rear legs is 0.5m to 1m.

4. The blade anchor bolt positioning and mounting bracket of the test bench according to claim 2, characterized in that: The two end surfaces of the support frame along its own thickness direction are assembly surfaces, and the angle between the assembly surfaces and the horizontal plane is 90° to 115°.

5. The blade anchor bolt positioning and mounting bracket of the test bench according to claim 2, characterized in that: The support leg also includes a reinforcement beam connected between the front support leg and the rear support leg.

6. The blade anchor bolt positioning and mounting bracket of the test bench according to claim 1, characterized in that: The support frame is divided into at least two layers of trusses along its thickness direction, and positioning rings are provided on at least two layers of the trusses.

7. The blade anchor bolt positioning and mounting bracket of the test bench according to claim 1, characterized in that: A main steel pipe is arranged on the support frame, and the positioning ring surrounds the main steel pipe.

8. The blade anchor bolt positioning and mounting bracket of the test bench according to claim 7, characterized in that: A through hole is provided on the pipe wall of the main steel pipe facing the bottom of the support frame.

9. The blade anchor bolt positioning and mounting bracket of the test bench according to claim 7, characterized in that: A support member is provided on the support frame. The support member has an installation space, and the positioning ring surrounds the support member.

10. The blade anchor bolt positioning and mounting bracket of the test bench according to claim 1, characterized in that: The support frame is provided with a lifting lug.

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