CN218823837U - Fastening device for high-strength bolt anti-slip coefficient test - Google Patents
Fastening device for high-strength bolt anti-slip coefficient test Download PDFInfo
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- CN218823837U CN218823837U CN202222348468.2U CN202222348468U CN218823837U CN 218823837 U CN218823837 U CN 218823837U CN 202222348468 U CN202222348468 U CN 202222348468U CN 218823837 U CN218823837 U CN 218823837U
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- strength bolt
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a fastening device for a high-strength bolt anti-slip coefficient test, which comprises a test piece, a high-strength bolt and an electric fastening device, wherein the test piece comprises a first core plate, a second core plate and clamping plates, the clamping plates are respectively arranged on two sides of the first core plate and the second core plate, and a gap between the first core plate and the second core plate is positioned in the middle of the clamping plates; a plurality of bolt holes are correspondingly formed in the clamping plate, the first core plate and the second core plate, and high-strength bolts penetrate through the bolt holes to fixedly connect the clamping plate, the first core plate and the second core plate; one side of the high-strength bolt is sleeved with a pressure sensor, and one side of the high-strength bolt is provided with a nut; the electric fastening device comprises a fixed end and a fastening end, wherein the fixed end can move in a horizontal mode, the fastening end can rotate, one side of the high-strength bolt is connected with the fixed end, so that the nut on the other side of the high-strength bolt can be sleeved in the fastening end, and the fastening end is used for driving the nut to rotate so as to tighten the nut. Compare traditional artifical fastening, improved work efficiency and alleviateed operating personnel's burden.
Description
Technical Field
The utility model relates to a steel construction material detection area especially relates to a experimental fastener of high strength bolt anti-slipping coefficient.
Background
The steel structure high-strength bolt connecting piece is widely applied to construction steel structures and bridge steel structure engineering, the connection quality of the steel structure high-strength bolt connecting piece and a steel plate directly relates to the safety of the whole engineering, the connection quality level can be well controlled through the detection of an anti-sliding coefficient, and the anti-sliding coefficient refers to the ratio of the sum of external force when a friction surface of the connecting piece slides and the pretension force of a high-strength bolt perpendicular to the friction surface in the high-strength bolt connection. When the high-strength bolt is connected, the connecting pieces are tightly attached together by virtue of the pretension force in the bolt rod to generate strong friction force to transfer load, the magnitude of the friction force is in direct proportion to the magnitude of positive pressure borne by the steel plate and the friction coefficient between the plates, the anti-sliding coefficient of the connecting friction surface is an important technical parameter of the connection design of the high-strength bolt of the steel structure, and whether the actual anti-sliding coefficient of the connecting friction surface meets the design requirement after the construction and assembly are finished is a key for ensuring the use safety of the steel structure, so that the inspection of the anti-sliding coefficient of the high-strength bolt connecting friction surface in the steel structure is very important.
All use torque wrench to fasten the nut among traditional testing process, artifical fastening is wasted time and energy.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a high-strength bolt anti-slip coefficient test fastening device can realize automatic fastening nuts, thereby improving the test efficiency.
The purpose of the utility model is realized by adopting the following technical scheme:
a fastening device for a high-strength bolt anti-sliding coefficient test comprises a test piece, a high-strength bolt and an electric fastening device, wherein the test piece comprises a first core plate, a second core plate and clamping plates, the first core plate and the second core plate are arranged in parallel, a gap is reserved between the first core plate and the second core plate, the clamping plates are respectively arranged on two sides of the first core plate and two sides of the second core plate, and the gap between the first core plate and the second core plate is located in the middle of the clamping plates; a plurality of bolt holes are correspondingly formed in the clamping plate, the first core plate and the second core plate, and high-strength bolts penetrate through the bolt holes to fixedly connect the clamping plate, the first core plate and the second core plate; one side of the high-strength bolt is sleeved with a pressure sensor, and one side of the high-strength bolt is provided with a nut; the electric fastening device comprises a fixed end and a fastening end, wherein the fixed end can move in a horizontal mode, the fastening end can rotate, one side of the high-strength bolt is connected with the fixed end so that a nut on the other side of the high-strength bolt can be sleeved in the fastening end, and the fastening end is used for driving the nut to rotate so as to tighten the nut.
Further, the fastening end is driven to rotate by a motor.
Further, the motor is a speed reduction motor.
Further, the pressure sensor is connected with a slip coefficient detector.
Further, the high-strength bolt is a high-strength hexagon socket bolt or a torsional shear type high-strength bolt.
Further, a gap distance between the first core plate and the second core plate is 5m.
Further, the number of the high-strength bolts is four.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses in, because high strength bolt one side is connected with electronic fastener's stiff end, when promoting the stiff end motion, the nut that can promote the high strength bolt opposite side embolias the fastening end, then drive the nut through the fastening end and rotate to screw up the nut is automatic. Compare traditional artifical fastening, improved work efficiency greatly and alleviateed operating personnel's burden, be favorable to improving the accuracy of follow-up detection.
Drawings
Fig. 1 is one of schematic diagrams of a test piece of a fastening device for a high-strength bolt anti-slip coefficient test provided by the present invention;
fig. 2 is a second schematic diagram of a test piece of a fastening device for a high-strength bolt anti-slip coefficient test provided by the present invention;
fig. 3 is a schematic view of a fastening device for a high-strength bolt anti-slip coefficient test provided by the present invention;
in the figure: 1. a test piece; 11. a first core board; 12. a second core board; 13. a splint; 14. a gap; 15. bolt holes; 2. a high strength bolt; 31. a fixed end; 32. a fastening end; 4. a pressure sensor; 5. and a nut.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "one," "another," and the like are used to distinguish similar elements, and these terms and other similar terms are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Corresponding reference numerals are used throughout the figures to indicate corresponding or corresponding elements (e.g., elements identified as "1XX" and "2XX" are structurally identical and functionally similar).
As shown in fig. 1-3, for the fastening device for the high-strength bolt anti-slip coefficient test provided by the present invention, the fastening device comprises a first core plate 11, a second core plate 12, a clamping plate 13, a high-strength bolt 2 and an electric fastening device, wherein the first core plate 11 and the second core plate 12 are arranged in parallel and a gap 14 is left between the first core plate 11 and the second core plate 12, the clamping plate 13 is respectively arranged on both sides of the first core plate 11 and the second core plate 12, and the gap 14 between the first core plate 11 and the second core plate 12 is located in the middle of the clamping plate 13; a plurality of bolt holes 15 are correspondingly formed in the clamping plate 13, the first core plate 11 and the second core plate 12, and the clamping plate 13, the first core plate 11 and the second core plate 12 are fixedly connected through the bolt holes 15 by high-strength bolts 2; a pressure sensor 4 is sleeved on one side of the high-strength bolt 2, and a nut 5 is arranged on one side of the high-strength bolt 2; the electric fastening device comprises a fixed end 31 capable of moving in a horizontal mode and a fastening end 32 capable of rotating, one side of the high-strength bolt 2 is connected with the fixed end 31 so that the nut 5 on the other side of the high-strength bolt 2 can be sleeved into the fastening end 32, and the fastening end 32 is used for driving the nut 5 to rotate so as to tighten the nut 5.
The utility model discloses in, because 2 one sides of high strength bolt are connected with electronic fastener's stiff end 31, when promoting stiff end 31 motion, can promote the nut 5 of 2 opposite sides of high strength bolt and embolia fastening end 32 then drive nut 5 through fastening end 32 and rotate to screw up nut 5 is automatic. Compare traditional artifical fastening, improved work efficiency greatly and alleviateed operating personnel's burden, be favorable to improving the accuracy of follow-up detection.
It should be noted that the fixed end 31 can be driven by an air cylinder or a screw.
Preferably, the fastening end 32 is rotated by a motor.
Preferably, the motor is a speed reduction motor. The main purposes of adopting the speed reducing motor are as follows: the rotating speed is reduced, the torsion is improved, and the common low-rotating-speed motor cannot reach the torque value.
Preferably, the pressure sensor 4 is connected to a slip coefficient detector. Through the detection of the pressure sensor 4, the final screwing force value of each high-strength bolt 2 is visually seen, the loading force is ensured to be within a specified range, and the accuracy of the final anti-sliding coefficient calculation is ensured.
Preferably, the high-strength bolt 2 is a high-strength hexagon socket bolt or a torsional shear type high-strength bolt 2.
Preferably, the gap 14 between the first core plate 11 and the second core plate 12 is 5m.
Preferably, the number of the high-strength bolts 2 is four.
The utility model discloses an experimentation mainly divides two steps to go on, uses high strength bolt 2 to fasten test piece 1 and fasten the back lotus messenger and splice the face and slide, wherein the experimental pulling force test piece 1 that adopts the concatenation of two friction surfaces of anti-sliding coefficient. And fastening the high-strength bolt 2 by primary screwing and final screwing. Firstly, sleeving a pressure sensor 4 on a screw rod of a high-strength bolt 2, enabling the screw rod to pass through a bolt hole 15, finally installing a nut 5, then placing a test piece 1 on a supporting plate between a fixed end 31 and a fastening end 32, fixing one side of the high-strength bolt 2 through the fixed end 31, pushing the fixed end 31 to enable the other side to be sleeved into the fastening end 32, starting screwing the nut 5 after a fastening switch is pressed, firstly fastening two high-strength bolts 2 in the middle until the pretensioning force standard value of the high-strength bolt 2 reaches about 50%, and then fastening two high-strength bolts 2 at the outer two sides to finish the initial screwing; and then repeating the operation to finish final screwing. After the final tightening, the pretension force of each high-strength bolt 2 should be in the range of 0.95 to 1.05 times the design pretension force value of the high-strength bolt 2. At this point, the fastening step is completed. And (3) placing the test piece 1 on a testing machine, adding 10% of an anti-sliding design load value, keeping the load for 1 minute, and then stably adding the load at the loading speed of 3 kN/s-5 kN/s to enable the friction surface to slide. After completion, the nut 5 is loosened to remove the pressure sensor 4. The utility model discloses an electronic fastening can make near design value control of pretension value better, has also reduced the manpower consumption simultaneously.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention.
Claims (7)
1. The fastening device for the high-strength bolt anti-sliding coefficient test is characterized by comprising a test piece (1), a high-strength bolt (2) and an electric fastening device, wherein the test piece (1) comprises a first core plate (11), a second core plate (12) and a clamping plate (13), the first core plate (11) and the second core plate (12) are arranged in parallel, a gap (14) is reserved between the first core plate (11) and the second core plate (12), the clamping plate (13) is arranged on each of two sides of the first core plate (11) and the second core plate (12), and the gap (14) between the first core plate (11) and the second core plate (12) is located in the middle of the clamping plate (13); a plurality of bolt holes (15) are correspondingly formed in the clamping plate (13), the first core plate (11) and the second core plate (12), and high-strength bolts (2) penetrate through the bolt holes (15) to connect and fix the clamping plate (13), the first core plate (11) and the second core plate (12); a pressure sensor (4) is sleeved on one side of the high-strength bolt (2), and a nut (5) is arranged on one side of the high-strength bolt (2); the electric fastening device comprises a fixed end (31) and a fastening end (32), wherein the fixed end (31) can move in a horizontal mode, the fastening end (32) can rotate, one side of the high-strength bolt (2) is connected with the fixed end (31) so that the nut (5) on the other side of the high-strength bolt (2) can be sleeved into the fastening end (32), and the fastening end (32) is used for driving the nut (5) to rotate so as to tighten the nut (5).
2. The fastening device for the high-strength bolt slip resistance test according to claim 1, wherein the fastening end (32) is rotated by a motor.
3. The fastening device for the high-strength bolt slip resistance coefficient test according to claim 2, wherein the motor is a speed reduction motor.
4. The fastening device for the high-strength bolt anti-slip coefficient test according to claim 1, wherein the pressure sensor (4) is connected with a slip coefficient detector.
5. The fastening device for the high-strength bolt anti-slip coefficient test according to claim 1, wherein the high-strength bolt (2) is a high-strength hexagon socket bolt or a torsional shear type high-strength bolt (2).
6. The fastening device for the high-strength bolt slip resistance test according to claim 1, wherein the distance of the gap (14) between the first core plate (11) and the second core plate (12) is 5m.
7. The fastening device for the high-strength bolt slip resistance test according to claim 1, wherein the number of the high-strength bolts (2) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222348468.2U CN218823837U (en) | 2022-09-02 | 2022-09-02 | Fastening device for high-strength bolt anti-slip coefficient test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222348468.2U CN218823837U (en) | 2022-09-02 | 2022-09-02 | Fastening device for high-strength bolt anti-slip coefficient test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218823837U true CN218823837U (en) | 2023-04-07 |
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ID=87260320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222348468.2U Active CN218823837U (en) | 2022-09-02 | 2022-09-02 | Fastening device for high-strength bolt anti-slip coefficient test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218823837U (en) |
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2022
- 2022-09-02 CN CN202222348468.2U patent/CN218823837U/en active Active
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