Bolt monitoring device of wind power assembly

Abstract

The invention relates to the technical field of wind power devices, in particular to a bolt monitoring device of a wind power assembly, which comprises a chassis flange and a reinforcing flange, the reinforcing flange sleeves the top of the chassis flange, and the chassis flange and the reinforcing flange are fixed by using a detection bolt and a buffer bolt. The detection bolts and the buffer bolts are evenly arranged at the top of the reinforcing flange at intervals, the bottoms of the detection bolts and the bottoms of the buffer bolts sequentially penetrate through the reinforcing flange and the chassis flange and then are fixed to the ground, and each detection bolt comprises a detection device and a first bolt body; the detection device is fixed to the top of the first bolt body and used for detecting the direction of external force, a chassis flange and a reinforcing flange of the detection device are longitudinally arranged, and when the device is stressed and the bolts are broken, the detection bolt can detect the stress direction, and the buffer bolt can offset part of the external force.

Description

Technical Field

[0001] The invention relates to the technical field of wind power devices, and in particular to a bolt monitoring device for a wind power component. Background Art

[0002] High-strength bolts in wind turbines are mainly used for connection, tightening and providing preload to resist external loads. Blade bolts are two key components that connect wind turbine blades and hubs, and generally use 10.9-grade high-strength bolts. The main reasons for bolt failure are poor quality of the bolts themselves, overload or improper installation of the bolts, and aging of components.

[0003] The Chinese utility model patent with authorization announcement number CN221547171U, published on August 16, 2024, discloses a blade root pitch circle, a wind turbine blade and a wind turbine generator. By setting a first winding layer, the bonding strength between the threaded sleeve and the complementary part can be effectively improved. By setting a second winding layer, the bonding strength between the first section of the core body and the cylinder body can be effectively improved, thereby ensuring the reliability of the bonding between the core body and the cylinder body, and increasing the force required for the threaded sleeve to be pulled out, thereby effectively reducing the situation of the threaded sleeve being pulled out, ensuring the normal operation of the wind turbine blade and the wind turbine generator, but it cannot detect the direction of the bolt breakage. Summary of the invention

[0004] In view of the above technical problems, the present invention provides a bolt monitoring device for a wind power component, wherein the chassis flange and the reinforcement flange are both arranged longitudinally. When the device is subjected to force to cause the bolt to break, the broken bolt and the direction of the bolt breakage can be detected.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A bolt monitoring device for a wind power component comprises a chassis flange and a reinforcement flange, wherein the reinforcement flange is sleeved on the top of the chassis flange, and the chassis flange and the reinforcement flange are fixed using detection bolts and buffer bolts, wherein the detection bolts and the buffer bolts are evenly spaced and arranged on the top of the reinforcement flange, and the bottoms of the detection bolts and the buffer bolts are successively passed through the reinforcement flange and the chassis flange and then fixed to the ground.

[0007] Furthermore, the detection bolt includes a detection device and a first bolt body, the detection device is fixed to the top of the first bolt body, and the detection device is used to detect the direction of the external force.

[0008] Furthermore, the detection device includes a sealing cover, an adjusting device, a conical pendulum, a steel ball, a sliding rail and a collecting tube, the top of the first bolt body passes through the bottom of the sealing cover, the side wall of the first bolt body is fixed to the sealing cover, the sealing cover is in a convex shape, the adjusting device is arranged at the top of the sealing cover, the bottom of the adjusting device is fixed to the top of the conical pendulum, the bottom of the conical pendulum is abutted against the top of the steel ball, the bottom of the steel ball is abutted against the top of the first bolt body, the top side wall of the first bolt body is inclinedly provided with the sliding rail, one end of the sliding rail is fixed to the top side wall of the first bolt body, the other end of the sliding rail is connected to the top of the collecting tube, and the bottom of the collecting tube is fixed to the bottom of the inner cavity of the sealing cover.

[0009] Furthermore, the interior of the collecting tube is filled with viscous liquid.

[0010] Furthermore, a pressure sensor is fixed at the bottom of the collecting tube.

[0011] Furthermore, a rubber pad is fixed between the pressure sensor and the bottom of the inner cavity of the sealing cover.

[0012] Furthermore, the adjusting device includes a rotating rod, a wire roller, an elastic wire and a rocker arm, one end of the rotating rod is rotatably connected to the side wall of the inner cavity of the sealing cover, the other end of the rotating rod passes through the side wall of the other end of the sealing cover and is fixed to the rocker arm, the wire roller is fixed to the middle part of the rotating rod, the top of the elastic wire is fixed to the wire roller, and the bottom of the elastic wire is fixed to the top of the conical pendulum.

[0013] Furthermore, the buffer bolt includes a nut and a second bolt body, the bottom of the nut abuts against the top of the reinforcement flange, and a plurality of cavities are evenly spaced in the middle of the second bolt body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The chassis flange and the reinforcement flange of the present invention are both arranged longitudinally. When the device is subjected to force and the bolts break, the broken bolts and the direction of the bolt breakage can be detected.

[0016] 2. The bottom of the conical pendulum of the present invention is in contact with the top of the steel ball. When the detection bolt is subjected to force, the sealing cover, the first bolt body and other parts move in the direction of the external force, and the conical pendulum does not move under the action of inertia. Therefore, the conical pendulum exerts forces in different directions on different steel balls. The stressed steel balls enter the corresponding collecting tubes through the corresponding slide rails. The collecting tubes are filled with viscous liquid. Since different steel balls are subjected to different forces exerted by the conical pendulum, different steel balls fall to different depths in the collecting tube. The force exerted is analyzed by a pressure sensor to obtain the force direction and magnitude of the detection bolt.

[0017] 3. The present invention rotates the rotating rod through the rocker, and the rotating rod winds the elastic wire through the wire roller to adjust the length and elasticity of the elastic wire, thereby adjusting the pressure of the conical pendulum on the steel ball to ensure that the conical pendulum always has sufficient inertia to remain stable and will not cause detection deviation due to small or continuous vibrations.

[0018] 4. The detection bolts and buffer bolts in the present invention are spaced apart at the top of the reinforcement flange. When the buffer bolt is broken by force, the cavity inside the second bolt body is burst by force. The force generated by the cavity bursting can offset part of the external force to reduce the damage to the device as a whole. Since the cavity bursts due to external force, the force generated by the cavity bursting is much smaller than the external force that causes damage to the device, so the force generated by the cavity bursting will not affect the detection results of the detection bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a front view of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the detection bolt;

[0022] Figure 4 Schematic diagram of the internal structure of the detection bolt;

[0023] Figure 5 for Figure 4 Schematic diagram of the structure of the middle A area;

[0024] Figure 6 for Figure 4 Schematic diagram of the structure of the middle B area;

[0025] Figure 7 is a top view of the slide rail;

[0026] Figure 8 It is a structural schematic diagram of a buffer bolt;

[0027] Fig. 9Schematic diagram of the internal structure of the buffer bolt.

[0028] The accompanying drawings are marked as:

[0029] 1. Chassis flange; 2. Reinforcement flange; 3. Detection bolt; 31. Sealing cover; 32. Adjustment device; 321. Rotating rod; 322. Wire roller; 323. Elastic wire; 324. Rocker; 33. Conical pendulum; 34. Steel ball; 35. Slide rail; 36. Collecting tube; 361. Viscous liquid; 37. Pressure sensor; 38. Rubber pad; 39. First bolt body; 4. Buffer bolt; 41. Nut; 42. Second bolt body; 43. Cavity. DETAILED DESCRIPTION

[0030] See also Figure 1-9 The self-inspection bolts for wind power components of this embodiment include a chassis flange 1 and a reinforcement flange 2. The reinforcement flange 2 is sleeved on the top of the chassis flange 1. The chassis flange 1 and the reinforcement flange 2 are fixed using detection bolts 3 and buffer bolts 4. The detection bolts 3 and buffer bolts 4 are evenly spaced and arranged on the top of the reinforcement flange 2. The bottoms of the detection bolts 3 and buffer bolts 4 pass through the reinforcement flange 2 and the chassis flange 1 in turn and are fixed to the ground.

[0031] The chassis flange 1 and the reinforcement flange 2 are both arranged longitudinally. When the device is subjected to force causing the bolts to break, the detection bolts 3 can detect the direction of the force, and the buffer bolts 4 can offset part of the external force.

[0032] Furthermore, the detection bolt 3 includes a detection device and a first bolt body 39 . The detection device is fixed to the top of the first bolt body 39 , and the detection device is used to detect the direction of the external force.

[0033] Furthermore, the detection device includes a sealing cover 31, an adjusting device 32, a conical pendulum 33, a steel ball 34, a slide rail 35 and a collecting tube 36. The top of the first bolt body 39 passes through the bottom of the sealing cover 31, the side wall of the first bolt body 39 is fixed to the sealing cover 31, the sealing cover 31 is in a convex shape, the adjusting device 32 is arranged at the top of the sealing cover 31, the bottom of the adjusting device 32 is fixed to the top of the conical pendulum 33, the bottom of the conical pendulum 33 is abutted against the top of the steel ball 34, the bottom of the steel ball 34 is abutted against the top of the first bolt body 39, the top side wall of the first bolt body 39 is inclinedly provided with a slide rail 35, one end of the slide rail 35 is fixed to the top side wall of the first bolt body 39, the other end of the slide rail 35 is connected to the top of the collecting tube 36, and the bottom of the collecting tube 36 is fixed to the bottom of the inner cavity of the sealing cover 31.

[0034] The bottom of the conical pendulum 33 is in contact with the top of the steel ball 34. When the detection bolt 3 is subjected to force, the sealing cover 31, the first bolt body 39 and other parts move in the direction of the external force, and the conical pendulum 33 does not move due to the action of inertia. Therefore, the conical pendulum 33 applies forces in different directions to different steel balls 34, and the stressed steel balls 34 enter the corresponding collection tubes 36 through the corresponding slide rails 35.

[0035] Furthermore, the interior of the collecting tube 36 is filled with a viscous liquid 361 .

[0036] The collecting tube 36 is filled with a viscous liquid 361. Since different steel balls 34 are subjected to different forces exerted by the conical pendulum 33, different steel balls 34 fall to different depths in the collecting tube 36.

[0037] Furthermore, a pressure sensor 37 is fixed at the bottom of the collecting pipe 36 .

[0038] By analyzing the force received by the pressure sensor 37 , the direction and magnitude of the force received by the detection bolt 3 can be analyzed.

[0039] Furthermore, a rubber pad 38 is fixed between the pressure sensor 37 and the bottom of the inner cavity of the sealing cover 31 .

[0040] Furthermore, the adjusting device 32 includes a rotating rod 321, a wire roller 322, an elastic wire 323 and a rocker 324. One end of the rotating rod 321 is rotatably connected to the side wall of the inner cavity of the sealing cover 31, and the other end of the rotating rod 321 penetrates the side wall of the other end of the sealing cover 31 and is fixed to the rocker 324. The wire roller 322 is fixed to the middle of the rotating rod 321, the top of the elastic wire 323 is fixed to the wire roller 322, and the bottom of the elastic wire 323 is fixed to the top of the conical pendulum 33.

[0041] The rotating rod 321 is rotated by the rocker 324, and the rotating rod 321 is wound around the elastic wire 323 through the wire roller 322 to adjust the length and elasticity of the elastic wire 323, thereby adjusting the pressure of the conical pendulum 33 on the steel ball 34 to ensure that the conical pendulum 33 always has sufficient inertia to remain stable and will not cause detection deviation due to small or continuous vibrations.

[0042] Furthermore, the buffer bolt 4 includes a nut 41 and a second bolt body 42 . The bottom of the nut 41 abuts against the top of the reinforcing flange 2 , and a plurality of cavities 43 are evenly spaced in the middle of the second bolt body 42 .

[0043] The detection bolt 3 and the buffer bolt 4 are spaced apart on the top of the reinforcement flange 2. When the buffer bolt 4 is broken by force, the cavity 43 inside the second bolt body 42 is burst by force. The force generated by the burst of the cavity 43 can offset part of the external force to reduce the damage to the device as a whole. Since the cavity 43 is burst by external force, the force generated by the burst of the cavity 43 is much smaller than the external force that causes damage to the device. Therefore, the force generated by the burst of the cavity 43 will not affect the detection result of the detection bolt 3.

[0044] The working principle of the present invention is:

[0045] The device is arranged longitudinally as a whole. According to the actual use requirements, the rotating rod 321 is rotated by the rocker 324, and the rotating rod 321 is wound around the elastic wire 323 through the wire roller 322 to adjust the length and elasticity of the elastic wire 323, so as to adjust the pressure of the conical pendulum 33 on the steel ball 34 to ensure that the conical pendulum 33 always has sufficient inertia to remain stable and will not cause detection deviation due to small or continuous vibrations.

[0046] The bottom of the conical pendulum 33 is in contact with the top of the steel ball 34. When the detection bolt 3 is subjected to force, the sealing cover 31, the first bolt body 39 and other parts move in the direction of the external force, and the conical pendulum 33 does not move under the action of inertia. Therefore, the conical pendulum 33 applies forces in different directions to different steel balls 34. The stressed steel balls 34 enter the corresponding collecting tubes 36 through the corresponding slide rails 35. The collecting tubes 36 are filled with viscous liquid 361. Since different steel balls 34 are subjected to different forces applied by the conical pendulum 33, different steel balls 34 fall to different depths in the collecting tube 36. The force applied is analyzed by the pressure sensor 37 to obtain the direction and magnitude of the force applied to the detection bolt 3.

[0047] The detection bolt 3 and the buffer bolt 4 are spaced apart on the top of the reinforcement flange 2. When the buffer bolt 4 is broken by force, the cavity 43 inside the second bolt body 42 is burst by force. The force generated by the burst of the cavity 43 can offset part of the external force to reduce the damage to the device as a whole. Since the cavity 43 is burst by external force, the force generated by the burst of the cavity 43 is much smaller than the external force that causes damage to the device. Therefore, the force generated by the burst of the cavity 43 will not affect the detection result of the detection bolt 3.

[0048] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bolt monitoring device for a wind power assembly, comprising a chassis flange (1) and a reinforcement flange (2), wherein the reinforcement flange (2) is sleeved on the top of the chassis flange (1), characterized in that: The chassis flange (1) and the reinforcement flange (2) are fixed by using detection bolts (3) and buffer bolts (4); the detection bolts (3) and the buffer bolts (4) are evenly spaced and arranged on the top of the reinforcement flange (2); the bottoms of the detection bolts (3) and the buffer bolts (4) penetrate the reinforcement flange (2) and the chassis flange (1) in sequence and are then fixed to the ground.

2. A bolt monitoring device for wind power components according to claim 1, characterized in that: The detection bolt (3) comprises a detection device and a first bolt body (39); the detection device is fixed to the top of the first bolt body (39); and the detection device is used to detect the direction of an external force.

3. A bolt monitoring device for wind power components according to claim 2, characterized in that: The detection device comprises a sealing cover (31), an adjusting device (32), a conical pendulum (33), a steel ball (34), a slide rail (35) and a collecting pipe (36); the top of the first bolt body (39) passes through the bottom of the sealing cover (31); the side wall of the first bolt body (39) is fixed to the sealing cover (31); the sealing cover (31) is in a convex shape; the adjusting device (32) is arranged on the top of the sealing cover (31); the bottom of the adjusting device (32) is connected to the top of the conical pendulum (33); The bottom of the conical pendulum (33) abuts against the top of the steel ball (34), the bottom of the steel ball (34) abuts against the top of the first bolt body (39), the top side wall of the first bolt body (39) is inclinedly provided with the slide rail (35), one end of the slide rail (35) is fixed to the top side wall of the first bolt body (39), the other end of the slide rail (35) is connected to the top of the collecting pipe (36), and the bottom of the collecting pipe (36) is fixed to the bottom of the inner cavity of the sealing cover (31).

4. A bolt monitoring device for wind power components according to claim 3, characterized in that: The collecting tube (36) is filled with a viscous liquid (361).

5. A bolt monitoring device for wind power components according to claim 3, characterized in that: A pressure sensor (37) is fixed at the bottom of the collecting tube (36).

6. A bolt monitoring device for wind power components according to claim 5, characterized in that: A rubber pad (38) is fixed between the pressure sensor (37) and the bottom of the inner cavity of the sealing cover (31).

7. A bolt monitoring device for a wind power assembly according to claim 1, characterized in that: The adjusting device (32) comprises a rotating rod (321), a wire roller (322), an elastic wire (323) and a rocker (324); one end of the rotating rod (321) is rotatably connected to the inner cavity side wall of the sealing cover (31); the other end of the rotating rod (321) penetrates the other end side wall of the sealing cover (31) and is fixed to the rocker (324); the wire roller (322) is fixed to the middle part of the rotating rod (321); the top of the elastic wire (323) is fixed to the wire roller (322); and the bottom of the elastic wire (323) is fixed to the top of the conical rocker (33).

8. The bolt monitoring device for wind power components according to claim 1, characterized in that: The buffer bolt (4) comprises a nut (41) and a second bolt body (42); the bottom of the nut (41) abuts against the top of the reinforcing flange (2); and a plurality of cavities (43) are evenly spaced in the middle of the second bolt body (42).

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