CN210288365U - Thermal expansion connecting bolt - Google Patents
Thermal expansion connecting bolt Download PDFInfo
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- CN210288365U CN210288365U CN201920480102.6U CN201920480102U CN210288365U CN 210288365 U CN210288365 U CN 210288365U CN 201920480102 U CN201920480102 U CN 201920480102U CN 210288365 U CN210288365 U CN 210288365U
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- threads
- connecting nut
- top end
- locking sleeve
- outer side
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Abstract
The utility model relates to a thermal energy connecting bolt, including two prestressing force steel bars, its characterized in that: two prestressing steel bars are respectively sheathed in a connecting nut, wherein the inner side surface of the connecting nut of one prestressing steel bar is provided with threads, the outer side surface of one top end of an expansion rod is provided with threads, the expansion rod is screwed on the threads arranged on the inner side surface of the connecting nut by the threads arranged on the outer side surface of the top end, the inner side surface of the connecting nut of the other prestressing steel bar is provided with threads, a locking sleeve is arranged, the outer side surface of the locking sleeve is provided with threads, the threads on the outer side surface of the locking sleeve are screwed on the threads on the inner side surface of the connecting nut, the locking sleeve is a frustum, the top end of the locking sleeve is a small circular opening, and the top end of the expansion rod is inserted into. The utility model has the advantages that can be at the convenient safe connection tubular pile of job site, practice thrift the cost, improve the work efficiency.
Description
Technical Field
The utility model relates to a connecting bolt, especially a thermal energy connecting bolt.
Background
At present, in some engineering construction, the depth of the pipe pile is different from dozens of meters to hundreds of meters according to the requirement of an underground structure, so that the connection of the pipe pile is a technical problem in actual construction, and therefore, the pipe pile driven into the ground layer needs to be connected in the actual construction. At present, the connection between the tubular piles is widely carried out in a welding mode, but because the tubular piles are welded on a construction site, one tubular pile is welded when each tubular pile is driven, and because the general current building scale is large, huge workload can be generated, the working efficiency of tubular pile construction is greatly reduced, and therefore a new structure with the rapid connection tubular piles is urgently needed to be developed, so that the efficiency of tubular pile construction is improved.
Disclosure of Invention
The utility model aims at solving the above-mentioned problem that exists among the prior art, provide a thermal expansion joint bolt. The utility model relates to a thermal energy connecting bolt, including two prestressing force steel bars, its characterized in that: two prestressing steel bars are respectively sheathed in a connecting nut, wherein the inner side surface of the connecting nut of one prestressing steel bar is provided with threads, the outer side surface of one top end of an expansion rod is provided with threads, the expansion rod is screwed on the threads arranged on the inner side surface of the connecting nut by the threads arranged on the outer side surface of the top end, the inner side surface of the connecting nut of the other prestressing steel bar is provided with threads, a locking sleeve is arranged, the outer side surface of the locking sleeve is provided with threads, the threads on the outer side surface of the locking sleeve are screwed on the threads on the inner side surface of the connecting nut, the locking sleeve is a frustum, the top end of the locking sleeve is a small circular opening, and the top end of the expansion rod is inserted into. The top end of the expansion rod is inserted into a cavity formed by the locking sleeve and the connecting nut, and the part of the top end of the expansion rod is a thermal expansion round table body. The two prestressed steel bars are sleeved inside the connecting nut and divided into a cone, and the diameter of the cone is larger than that of a through hole in the top end of the sleeved connecting nut. The utility model has the advantages that can be at the convenient safe connection tubular pile of job site, practice thrift the cost, improve the work efficiency.
Drawings
Fig. 1 is a schematic view of the structure decomposition of the present invention, and fig. 2 is a schematic view of the connection of the present invention.
Detailed Description
The method comprises the following specific implementation steps: a thermal expansion connecting bolt comprises two prestressed steel bars 1 and is characterized in that: two prestressing steel bars are respectively sheathed in a connecting nut 2, the inner side surface of the connecting nut of one prestressing steel bar is provided with a thread 3, the outer side surface of the top end of an expansion rod 4 is provided with a thread 5, the expansion rod is screwed on the thread 3 arranged on the inner side surface of the connecting nut by the thread 5 arranged on the outer side surface of the top end, the inner side surface of the connecting nut of the other prestressing steel bar is provided with a thread 6, a locking sleeve 7 is arranged, the outer side surface of the locking sleeve is provided with a thread 8, the thread 8 on the outer side surface of the locking sleeve is screwed on the thread 6 on the inner side surface of the connecting nut, the locking sleeve is a frustum, the top end 9 of the locking sleeve is a small round opening, and the top end of the expansion rod is. The part of the top end of the expansion rod inserted into the cavity formed by the locking sleeve and the connecting nut is a thermal expansion round table body 11. The two prestressed steel bars are sleeved inside the connecting nut and divided into a cone 12, and the diameter of the cone is larger than that of a through hole 13 on the top end of the sleeved connecting nut 2.
When in actual use, two prestressed steel bars sleeved with connecting nuts are respectively welded on an upper tubular pile and a lower tubular pile, according to the size of the tubular piles, several to more than ten tubular piles may be welded on each tubular pile, after the previous tubular pile is driven into the ground, aligning the next tubular pile, screwing an expansion rod in the connecting nut of the last tubular pile, sleeving all the expansion rods with a high-frequency heating coil, heating, pressing the upper tubular pile downwards, inserting the upper tubular pile into a cavity formed by a locking sleeve and a connecting nut of the next tubular pile, thermally expanding the top end of the expansion rod subjected to the downward pressure of the upper tubular pile into a circular truncated cone according to the cavity formed by the locking sleeve and the connecting nut, because the locking sleeve is a frustum, the expansion rods are locked in a cavity formed by the locking sleeve and the connecting nut, and after all the expansion rods are heated and expanded, the upper tubular pile and the lower tubular pile are connected.
Claims (3)
1. The utility model provides a thermal energy connecting bolt, includes two prestressing steel bars, its characterized in that: two prestressing steel bars are respectively sheathed in a connecting nut, wherein the inner side surface of the connecting nut of one prestressing steel bar is provided with threads, the outer side surface of one top end of an expansion rod is provided with threads, the expansion rod is screwed on the threads arranged on the inner side surface of the connecting nut by the threads arranged on the outer side surface of the top end, the inner side surface of the connecting nut of the other prestressing steel bar is provided with threads, a locking sleeve is arranged, the outer side surface of the locking sleeve is provided with threads, the threads on the outer side surface of the locking sleeve are screwed on the threads on the inner side surface of the connecting nut, the locking sleeve is a frustum, the top end of the locking sleeve is a small circular opening, and the top end of the expansion rod is inserted into.
2. A thermally expansive coupling stud as defined in claim 1, wherein: the top end of the expansion rod is inserted into a cavity formed by the locking sleeve and the connecting nut, and the part of the top end of the expansion rod is a thermal expansion round table body.
3. A thermally expansive coupling stud as defined in claim 1, wherein: the two prestressed steel bars are sleeved inside the connecting nut and divided into a cone, and the diameter of the cone is larger than that of a through hole in the top end of the sleeved connecting nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920480102.6U CN210288365U (en) | 2019-04-10 | 2019-04-10 | Thermal expansion connecting bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920480102.6U CN210288365U (en) | 2019-04-10 | 2019-04-10 | Thermal expansion connecting bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210288365U true CN210288365U (en) | 2020-04-10 |
Family
ID=70067372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920480102.6U Active CN210288365U (en) | 2019-04-10 | 2019-04-10 | Thermal expansion connecting bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210288365U (en) |
-
2019
- 2019-04-10 CN CN201920480102.6U patent/CN210288365U/en active Active
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