CN220151706U - Stress monitoring type nut and stress monitoring equipment comprising same - Google Patents
Stress monitoring type nut and stress monitoring equipment comprising same Download PDFInfo
- Publication number
- CN220151706U CN220151706U CN202321577007.0U CN202321577007U CN220151706U CN 220151706 U CN220151706 U CN 220151706U CN 202321577007 U CN202321577007 U CN 202321577007U CN 220151706 U CN220151706 U CN 220151706U
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- China
- Prior art keywords
- stress monitoring
- stress
- nut
- nut body
- receiving groove
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 39
- 238000012806 monitoring device Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses a stress monitoring type nut and stress monitoring equipment comprising the same, wherein the stress monitoring type nut comprises a nut body, a threaded hole is formed in the nut body, a containing groove is formed in the nut body and used for placing a stress monitoring device, the containing groove is recessed inwards from the inner wall surface of the threaded hole, and the containing groove is located on one side of the nut body. The stress monitoring device comprises a stress monitoring means and a stress monitoring device as described above. According to the stress monitoring nut and the stress monitoring equipment comprising the same, the accommodating groove is formed in the threaded hole of the nut body and is used for accommodating the stress monitoring device, so that the function of stress monitoring is achieved, meanwhile, the stress bearing and fatigue performance of the nut body are not reduced, the nut body can detect the stress of the key part and the part which is not easy to detach of the wind turbine generator in real time, and accordingly a basis is provided for installation and maintenance of the equipment.
Description
Technical Field
The utility model relates to a stress monitoring nut and stress monitoring equipment comprising the same.
Background
In recent years, with the large-scale development of the wind power industry, the quality accident of the collapse of the fan frequently occurs, and aiming at the situation, a main machine factory needs to observe the situation of various stresses born by the nut during installation from the condition of the original attention of the change of the fastening axial force of the bolt, and the accident caused by fatigue effect can be warned through the change, so that a more urgent need exists for a high-strength nut capable of monitoring various stresses in real time.
The high-strength nut in the prior art is shown in fig. 1 and 2, and is used for being installed and fixed through threads, and the high-strength nut in the prior art cannot be installed with detection equipment, so that the purpose of detecting stress change in real time cannot be achieved.
Disclosure of Invention
The utility model aims to overcome the defects existing in the prior art, and provides a stress monitoring nut and stress monitoring equipment comprising the same.
The utility model is realized by the following technical scheme:
the utility model provides a stress monitoring type nut, its includes the nut body, the nut body internal screw hole that has, offered the holding tank on the nut body, the holding tank is used for placing stress monitoring devices, the holding tank certainly the internal face of screw hole is inwards sunken, just the holding tank is located one side of nut body.
Further, the accommodating groove is U-shaped.
Further, the flatness of the accommodating groove is less than or equal to 0.05mm.
Further, the roughness of the accommodating groove is less than or equal to Ra0.8.
Further, the recess length of the receiving groove which is recessed inward from one side of the nut body is 8+ -0.25 mm.
Further, the depth of the accommodating groove recessed inward from the inner wall surface of the threaded hole is 3.5+ -0.3 mm.
Further, the width of the accommodating groove recessed inward from the inner wall surface of the threaded hole is 5+ -0.3 mm.
A stress monitoring device comprising a stress monitoring means and a stress monitoring device as described above.
Further, the depth of the accommodating groove is 0.5-1 mm greater than the outer diameter of the stress monitoring device.
Further, the width of the accommodating groove is 0.5-1 mm larger than the outer diameter of the stress monitoring device.
The utility model has the beneficial effects that:
according to the stress monitoring nut and the stress monitoring equipment comprising the same, the accommodating groove is formed in the threaded hole of the nut body and is used for accommodating the stress monitoring device, so that the function of stress monitoring is achieved, meanwhile, the stress bearing and fatigue performance of the nut body are not reduced, the nut body can detect the stress of the key part and the part which is not easy to detach of the wind turbine generator in real time, and accordingly a basis is provided for installation and maintenance of the equipment.
Drawings
Fig. 1 is a schematic structural view of a prior art high strength nut.
Fig. 2 is a schematic view of the internal structure of a high strength nut according to the prior art.
Fig. 3 is a schematic structural view of a stress monitoring nut according to an embodiment of the present utility model.
Fig. 4 is a schematic view of the cross-sectional structure in the direction A-A in fig. 3.
Reference numerals illustrate:
nut body 1
Screw hole 11
Receiving groove 12
Detailed Description
The following description of embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the utility model may be practiced.
The embodiment of the utility model discloses stress monitoring equipment, which comprises a stress monitoring device and stress monitoring equipment. As shown in fig. 3 and 4, the stress monitoring nut comprises a nut body 1, wherein a threaded hole 11 is formed in the nut body 1, a containing groove 12 is formed in the nut body 1, the containing groove 12 is used for placing a stress monitoring device, the containing groove 12 is recessed inwards from the inner wall surface of the threaded hole 11, and the containing groove 12 is located on one side of the nut body 1. Through processing holding tank 12 in screw hole 11 of nut body 1, holding tank 12 is used for placing stress monitoring devices, is used for detecting the stress of nut body 1 through stress monitoring devices to realize that stress monitoring equipment possesses the function of stress monitoring, simultaneously, does not reduce the stress bearing and the fatigue property of nut body 1, makes nut body 1 can real-time detection wind turbine generator system critical position, the stress at difficult dismantlement position, thereby provides the basis for the installation and the maintenance of equipment.
In this embodiment, the receiving groove 12 has a U-shape. The recess length L1 of the receiving groove 12, which is recessed inward from one side of the nut body 1, is 8±0.25mm. The depth L2 of the receiving groove 12 recessed inward from the inner wall surface of the screw hole 11 is 3.5±0.3mm. The width L3 of the receiving groove 12 recessed inward from the inner wall surface of the screw hole 11 is 5±0.3mm. Simple structure and convenient processing and manufacturing.
Wherein the depth L2 of the accommodating groove 12 is 0.5-1 mm greater than the outer diameter of the stress monitoring device. The width L3 of the accommodating groove 12 is 0.5-1 mm greater than the outer diameter of the stress monitoring device. The stress monitoring device can be inserted into the accommodating groove 12, so that the purpose that the accommodating groove 12 is used for placing the stress monitoring device, so that the stress monitoring device is convenient to install, and the purpose of detecting stress change in real time is achieved.
The finish must be maintained in the receiving groove 12 and burrs, if present, can affect the waveform of the test stress and thus the resulting test data. In this embodiment, the flatness of the accommodating groove 12 is 0.05mm or less. The roughness of the accommodating groove 12 is less than or equal to Ra0.8. Thereby ensuring the detection precision of the stress monitoring equipment.
In the present embodiment, the performance grade of the nut body 1: grade 10, according to GB/T3098.2-2015. Wherein: the hardness HRC26-36 of the nut body 1 ensures the load 866kN, and the nut type size of the nut body 1 accords with GB/T6170-2015.
The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.
Claims (10)
1. The utility model provides a stress monitoring type nut, its characterized in that includes the nut body, the nut body internal screw hole that has, offered the holding tank on the nut body, the holding tank is used for placing stress monitoring devices, the holding tank certainly the internal face of screw hole is inwards sunken, just the holding tank is located one side of nut body.
2. The stress monitoring nut of claim 1, wherein said receiving groove is U-shaped in shape.
3. The stress-monitoring nut of claim 1, wherein the flatness of the receiving groove is less than or equal to 0.05mm.
4. The stress-monitoring nut of claim 1, wherein the receiving groove has a roughness of ∈ra0.8.
5. The stress monitoring nut of claim 1, wherein the receiving groove is recessed inward from one side of the nut body by a recess length of 8±0.25mm.
6. The stress-monitoring nut of claim 1, wherein the receiving groove is recessed inwardly from the inner wall surface of the threaded bore to a depth of 3.5 ± 0.3mm.
7. The stress-monitoring nut of claim 1, wherein the receiving groove is recessed inwardly from the inner wall surface of the threaded bore by a width of 5 ± 0.3mm.
8. Stress monitoring device, characterized in that it comprises a stress monitoring means and a stress monitoring nut according to any of claims 1-7.
9. The stress monitoring device of claim 8, wherein the depth of the receiving groove is 0.5-1 mm greater than the outer diameter of the stress monitoring means.
10. The stress monitoring device of claim 8, wherein the width of the receiving groove is 0.5 to 1mm greater than the outer diameter of the stress monitoring means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321577007.0U CN220151706U (en) | 2023-06-19 | 2023-06-19 | Stress monitoring type nut and stress monitoring equipment comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321577007.0U CN220151706U (en) | 2023-06-19 | 2023-06-19 | Stress monitoring type nut and stress monitoring equipment comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220151706U true CN220151706U (en) | 2023-12-08 |
Family
ID=89021237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321577007.0U Active CN220151706U (en) | 2023-06-19 | 2023-06-19 | Stress monitoring type nut and stress monitoring equipment comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220151706U (en) |
-
2023
- 2023-06-19 CN CN202321577007.0U patent/CN220151706U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |