CN212429464U - Straight-groove stud bolt for wind power - Google Patents
Straight-groove stud bolt for wind power Download PDFInfo
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- CN212429464U CN212429464U CN202021090591.3U CN202021090591U CN212429464U CN 212429464 U CN212429464 U CN 212429464U CN 202021090591 U CN202021090591 U CN 202021090591U CN 212429464 U CN212429464 U CN 212429464U
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- wind power
- stud bolt
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Abstract
The utility model provides a straight line groove stud for wind-powered electricity generation, it including: first screw thread portion, polished rod portion and second screw thread portion, first screw thread portion with second screw thread portion is located the both ends of polished rod portion, it has a straight line groove to open on the terminal surface of first screw thread portion, a straight line groove is used for with outside straight line screw thread utensil looks adaptation. Through setting up a word groove at the terminal surface of first screw portion to can utilize a word screw thread utensil soon to twist the second screw portion of stud in the screw hole on the base member, it is convenient to install, has improved efficiency.
Description
Technical Field
The utility model relates to a straight groove stud for wind-powered electricity generation.
Background
Along with the large-scale development of the wind power industry in recent years, for high-strength fasteners, a host factory is more and more concerned about rapidness and convenience in installation, and has more urgent requirements on various high-strength bolts capable of being installed rapidly. In the past, double nuts are required to be locked mutually, a matched socket wrench is used for screwing in a base body, the double nuts are required to be screwed down after the double nuts are screwed, a connected piece is continuously installed, and the problems of complexity, time consumption and low efficiency are solved.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a straight line groove stud for wind-powered electricity generation in order to overcome the defect that stud installation is loaded down with trivial details among the prior art, inefficiency.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
the utility model provides a straight line groove stud for wind-powered electricity generation which characterized in that, it is including: first screw thread portion, polished rod portion and second screw thread portion, first screw thread portion with second screw thread portion is located the both ends of polished rod portion, it has a straight line groove to open on the terminal surface of first screw thread portion, a straight line groove is used for with outside straight line screw thread utensil looks adaptation.
Preferably, the depth of the straight groove is less than or equal to 9mm, and the width of the straight groove is less than or equal to 8.5 mm.
Preferably, the surface flatness of the straight groove is less than or equal to 0.02 mm.
Preferably, the symmetry degree of the straight groove to the central shaft of the straight groove stud bolt for wind power is less than or equal to 0.03 mm.
Preferably, the roughness of the straight groove is less than or equal to Ra0.8.
Preferably, the straight groove stud bolt for wind power is made of alloy steel.
On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.
The utility model discloses an actively advance the effect and lie in: through setting up a word groove at the terminal surface of first screw portion to can utilize a word screw thread utensil soon to twist the second screw portion of stud in the screw hole on the base member, it is convenient to install, has improved efficiency.
Drawings
Fig. 1 is a schematic structural view of a straight groove stud bolt for wind power in the preferred embodiment of the present invention.
Description of reference numerals:
first threaded portion 100
Polished rod part 200
Detailed Description
The present invention will be more clearly and completely described below with reference to the accompanying drawings.
Fig. 1 shows a slotted stud for wind power, comprising: a first threaded portion 100, a smooth rod portion 200, and a second threaded portion 300. The first thread part 100 and the second thread part 300 are located at two ends of the polished rod part 200, a linear groove 110 is opened on the end surface of the first thread part 100, and the linear groove 110 is used for being matched with an external linear thread screwdriver. The first thread part 100 and the second thread part 300 are smoothly and transitionally connected with the two ends of the polished rod part 200, so that stress concentration at the connection part is avoided.
When the stud bolt is manufactured, an advanced numerical control turning and milling composite processing technology is adopted to directly machine and form a workpiece, and the original warm heading machining and forming technology is cancelled. Firstly, a plurality of special cutters are arranged on a numerical control machining center, the cutter changing time is reduced by utilizing novel cutter arrangement, a head straight groove 110, the diameter of a thread rolling blank and the middle diameter of a bolt are directly turned and milled on a material subjected to intermediate frequency heat treatment, the machining efficiency is greatly improved, and therefore the product manufacturing process chain is greatly shortened. The linear groove 110 thus produced is highly accurate in dimension, positioning and surface quality. The manufacturing process chain of the product is shortened, and the production efficiency is improved.
When using this stud, at first adopt with second screw portion 300 alignment treat the screw hole of connecting, utilize a word screw thread utensil soon to cooperate with a word groove 110 in with second screw portion 300 screw in threaded hole, then embolia other on stud and treat the connecting piece, screw up the nut at first screw portion 100 to accomplish bolt fixed connection, it is convenient to install, has improved efficiency. In other embodiments, the end surface of the first threaded portion 100 may be provided with a cross-shaped groove, an inner hexagonal groove, or other groove suitable for being matched with an external screwdriver.
In order to prevent the first thread part 100 from micro-deformation during the screwing process of the stud bolt into the base body, which leads to the subsequent unsmooth nut installation, the depth of the straight groove 110 is less than or equal to 9mm, and the width of the straight groove 110 is less than or equal to 8.5 mm.
In addition, the surface planeness of the straight groove 110 is less than or equal to 0.02 mm.
In order to prevent uneven stress caused by screwing with the straight-line thread screwing tool, the symmetry degree of the straight-line groove 110 to the central shaft of the straight-line groove stud bolt for wind power is less than or equal to 0.03 mm.
In addition, the roughness of the straight groove 110 is less than or equal to Ra0.8, so that the crack source and stress concentration are reduced, and the anti-fatigue capability of the straight groove is improved.
In this embodiment, the material of the straight groove stud bolt for wind power is alloy steel. The alloy steel material is adopted, so that the impact resistance of the stud bolt can be effectively improved. In the embodiment, the model of the adopted alloy steel is 40CrNiMioA, and the impact value (Akv) is more than or equal to 47 joules (J) at the low temperature of-40 ℃.
In order to ensure the performance of the stud bolt, the performance grades are as follows: 10.9 grade, and conforms to GB/T3098.1-2000. Wherein: the hardness is 32-39 HRC, the tensile strength is not less than 1040MPa, the yield strength is not less than 940MPa, the elongation is not less than 9%, and the reduction of area is not less than 48%.
In order to facilitate connection of both ends of the stud bolt with the outside, chamfers are provided on end surfaces of the first thread part 100 and the second thread part 300.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (6)
1. The utility model provides a straight line groove stud for wind-powered electricity generation which characterized in that, it is including: first screw thread portion, polished rod portion and second screw thread portion, first screw thread portion with second screw thread portion is located the both ends of polished rod portion, it has a straight line groove to open on the terminal surface of first screw thread portion, a straight line groove is used for with outside straight line screw thread utensil looks adaptation.
2. The straight groove stud bolt for wind power as claimed in claim 1, wherein the depth of the straight groove is less than or equal to 9mm, and the width of the straight groove is less than or equal to 8.5 mm.
3. The slotted stud for wind power according to claim 1, wherein the surface flatness of the slotted stud is no greater than 0.02 mm.
4. The straight groove stud bolt for wind power of claim 1, wherein the degree of symmetry of the straight groove to the central axis of the straight groove stud bolt for wind power is less than or equal to 0.03 mm.
5. The straight groove stud bolt for wind power as claimed in claim 1, wherein the roughness of the straight groove is ≤ ra0.8.
6. The straight groove stud bolt for wind power of any one of claims 1 to 5, wherein the straight groove stud bolt for wind power is made of alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021090591.3U CN212429464U (en) | 2020-06-12 | 2020-06-12 | Straight-groove stud bolt for wind power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021090591.3U CN212429464U (en) | 2020-06-12 | 2020-06-12 | Straight-groove stud bolt for wind power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212429464U true CN212429464U (en) | 2021-01-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021090591.3U Active CN212429464U (en) | 2020-06-12 | 2020-06-12 | Straight-groove stud bolt for wind power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212429464U (en) |
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2020
- 2020-06-12 CN CN202021090591.3U patent/CN212429464U/en active Active
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