CN216044872U - Taper sleeve nut assembly and connecting structure of taper sleeve nut assembly and bolt connecting piece - Google Patents
Taper sleeve nut assembly and connecting structure of taper sleeve nut assembly and bolt connecting piece Download PDFInfo
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- CN216044872U CN216044872U CN202122431071.5U CN202122431071U CN216044872U CN 216044872 U CN216044872 U CN 216044872U CN 202122431071 U CN202122431071 U CN 202122431071U CN 216044872 U CN216044872 U CN 216044872U
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Abstract
The utility model provides a taper sleeve nut sub-assembly, includes outer taper sleeve nut and interior taper sleeve nut, and wherein, the centre bore of outer taper sleeve nut is the bell mouth, and hole top diameter is less than hole bottom diameter, and the upper portion of interior taper sleeve nut is the cone, and the bell mouth and the conical surface cooperation can be put into to the cone, and the straight thread hole that the centre bore of interior taper sleeve nut was used for fastening with the mutual soon of bolt. The invention also provides a connecting structure of the taper sleeve nut assembly and the bolt connecting piece, wherein the outer taper sleeve nut is placed in the mounting hole of the perforated steel plate, the cone is placed in the cone hole, and the bolt penetrates through the outer taper sleeve nut and is mutually screwed with the straight threaded hole of the cone for fastening.
Description
Technical Field
The invention belongs to the technical field of shear connectors, and particularly relates to a taper sleeve nut assembly and a connecting structure of the taper sleeve nut assembly and a bolt connector.
Background
Due to the use of high-strength steel and high-strength concrete, the interface shear force of the combined beam bridge is increased, the number of required studs is large, the welding workload is large, the group nail effect is easy to generate, and the performance of stud materials is not favorably exerted. The diameter of the stud needs to be increased when the number of the studs is reduced, but according to the specification GBT 10433 and 2002 cylindrical head bolt for arc stud welding, the diameter of the existing stud is 10-25 mm, the welding technology of the stud with the larger diameter is not mature enough, and the weld joint is easy to break. The diameter range of the bolt is larger, according to GBT 5783-2016 hexagon head bolt full thread, the diameter of the bolt is from M1.6 to M64, so that the bolt connecting piece can be used for replacing a large-diameter bolt. In addition, the high-strength bolt can be installed on site, and the influence of the protruding stud on transportation is avoided. And adopt bolted connection's reinforced concrete slab quick detachable, can realize damaging the change of concrete slab or corrosion girder steel, this helps reducing structure life cycle cost, improves the structure sustainability of steel concrete bridge.
However, in the method for installing the bolt connecting piece by matching the common bolt with the two common nuts, gaps exist between the bolt and the steel plate hole, so that the bolt connecting piece can slide greatly when bearing shearing force, and the rigidity is lower in the early stage, so that the shearing resistance and bearing capacity of the bolt can not be fully exerted when the composite beam is deformed greatly, and the performance of the bolt material is not favorably exerted.
Disclosure of Invention
In order to overcome the defects of the prior art and solve the problem that when the bolt is used as a shear connector, a gap exists between the bolt and a steel plate hole to influence the stress performance, the invention aims to provide a taper sleeve nut assembly and a connecting structure between the taper sleeve nut assembly and the bolt connector, which can eliminate the gap and are convenient to disassemble.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a taper sleeve nut sub-assembly, includes outer taper sleeve nut and interior taper sleeve nut, wherein, the centre bore of outer taper sleeve nut is the bell mouth, and hole top diameter is less than hole bottom diameter, the upper portion of interior taper sleeve nut is the cone, the cone can be put into bell mouth and conical surface cooperation, the straight thread hole that the centre bore of interior taper sleeve nut was used for connecting to fasten with the bolt is each other soon.
Preferably, the outer taper sleeve nut is formed by connecting a cylindrical main body at the upper part for placing in the perforated steel plate mounting hole and an enlarged cylinder at the bottom for limiting, and the inner taper sleeve nut is formed by connecting a taper at the upper part and a hexagon nut at the bottom.
Preferably, the outer taper sleeve nut is axially provided with a first vertical through seam penetrating through the wall thickness, and the taper body is provided with a second vertical through seam penetrating through the wall thickness.
Preferably, the width of the first vertical through seam is 1-3 mm, and the width of the second vertical through seam is 1-2 mm.
Preferably, the hexagonal nut comprises a nylon ring or steel sheet self-locking mechanism.
Preferably, the inner taper sleeve nut height is greater than the outer taper sleeve nut height.
The invention also provides a connecting structure of the taper sleeve nut assembly and the bolt connecting piece, the outer taper sleeve nut is placed in the mounting hole of the perforated steel plate, the cone is placed in the cone hole, and the bolt penetrates through the outer taper sleeve nut and is mutually screwed with the straight threaded hole of the cone for fastening.
Preferably, the outer wall of the outer taper sleeve nut is in transition fit with the inner wall of the mounting hole of the perforated steel plate.
Preferably, the bolt is a hexagon head bolt, a screw, a stud or a screw rod, the perforated steel plate is steel section or one or more layers of steel plates, and the mounting hole is a round hole.
Preferably, a nut is arranged on the bolt above the perforated steel plate.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention only carries out innovative design on the nut and solves the problem of the gap between the bolt and the steel plate. The inner taper sleeve nut expands the outer taper sleeve nut with the open seam by utilizing the principle that the lower inner taper sleeve nut is screwed into the nut in a thread fit manner, and the seam between the steel plate and the bolt can be eliminated. Because the inner taper sleeve nut and the outer taper sleeve nut are locked mutually in a wedge shape, the bolt connecting piece is ensured to be more and more tightened and not separated from the steel plate in the stress deformation process, and the weld joint damage similar to the stud can not occur. The principle is clear, and the stress performance and the vibration resistance performance of the bolt connecting piece can be improved.
(2) The invention has simple use, can be twisted in one direction and is convenient to install, has no special requirements on bolts and steel plates, has low requirement on the hole opening precision of the steel plates, and is convenient for practical engineering application and popularization.
(3) The taper sleeve nut assembly can be repeatedly used after being disassembled, and the cost is reduced. The concrete slab and the steel beam connected with the concrete slab and the steel beam are replaceable, so that the service life of the building structure is prolonged.
Drawings
FIG. 1 is a three-dimensional perspective view of an outer cone nut of the present invention.
FIG. 2 is a three-dimensional perspective view of the inner taper sleeve nut of the present invention.
Fig. 3 is a three-dimensional external view of the connection structure of the present invention.
Fig. 4 is an external view of the connecting structure of the present invention before and after assembly.
Fig. 5 is a front and rear perspective view of the coupling structure of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the drawings and examples.
The invention firstly provides a taper sleeve nut assembly which comprises an outer taper sleeve nut 3 and an inner taper sleeve nut 4.
As shown in fig. 1, the central hole of the outer taper sleeve nut 3 is a tapered hole, i.e., the diameter of the top of the hole is smaller than the diameter of the bottom of the hole.
In one embodiment, the outer cone nut 3 is comprised of a cylindrical body 31 and an enlarged cylinder 32 connected. Wherein the cylindrical body 31 is at the upper part and is adapted to be placed in a mounting hole of the apertured steel plate 5 in use. The cylindrical body 31 is at the bottom and is used for limiting the whole outer taper sleeve nut 3.
In one embodiment, the outer taper sleeve nut 3 is axially provided with a vertical through seam I penetrating through the wall thickness, so that after the cylindrical body 31 is placed into the mounting hole of the perforated steel plate 5, the cylindrical body can be elastically deformed to adapt to the size of the hole to eliminate the gap with the steel plate. Illustratively, the width of the first vertical through seam is 1-3 mm according to the diameter of the bolt. For example, 1mm, 2mm, and 3mm may be used.
As shown in FIG. 2, the upper portion of the inner taper sleeve nut 4 is a taper 41. The central hole of the taper sleeve nut 4 is a straight threaded hole which is used for being screwed with the bolt 1 for fastening, the taper of the taper body 41 is smaller than or equal to that of the taper hole of the outer taper sleeve nut 3, so that the taper hole of the outer taper sleeve nut 3 can be placed in the taper hole, and the outer wall of the taper body 41 is in conical surface fit with the inner wall of the taper hole.
In one embodiment, the inner taper sleeve nut 4 is comprised of a taper 41 and a hex nut 42. Wherein the cone 41 is arranged at the upper part and is used for placing a conical hole of the outer taper sleeve nut 3, and the hexagonal nut 42 is arranged at the bottom part
In one embodiment, the cone 41 is provided with a second vertical through-slit which penetrates the wall thickness. Illustratively, the width of the second vertical through seam is 1-2 mm, such as 1mm and 2 mm. The second vertical through seam can be omitted.
In one embodiment, the height of the inner taper sleeve nut 4 is greater than the height of the outer taper sleeve nut 3 to ensure that the lower hexagonal nut 42 of the inner taper sleeve protrudes from the bottom surface of the outer taper sleeve nut 3 for later disassembly. The hexagon nut 42 can be arranged or not, when not arranged, the hexagon nut is an undetachable bolt connector, and when arranged, the hexagon nut is a detachable bolt connector; illustratively, the hex nut 42 may include a self-locking mechanism such as a nylon ring or steel plate.
The invention further provides a connecting structure formed by the taper sleeve nut assembly and the bolt connecting piece, and the connecting structure is particularly suitable for mounting the bolt connecting piece in a combined bridge. Referring to fig. 3, in the connection structure, the outer taper sleeve nut 3 is inserted into the mounting hole of the perforated steel plate 5, the cone 41 is inserted into the tapered hole of the outer taper sleeve nut 3, and the bolt 1 passes through the outer taper sleeve nut 3 and is screwed with the straight threaded hole of the cone 41 to be fastened. Illustratively, the bolt 1 may be a hexagon head bolt, a screw, a stud or a screw rod, the perforated steel plate 5 may be a steel section or a steel plate, the steel plate may be one or more layers, and the mounting hole is a circular hole.
In one embodiment, the outer wall of the outer taper sleeve nut 3 is in transition fit with the inner wall of the mounting hole of the perforated steel plate 5.
In one embodiment, the bolt 1 is provided with a nut 2 on the top of the perforated steel plate 5.
Referring to fig. 4 and 5, the connection process of the connection mechanism of the present invention:
the bolt 1 is sleeved with the nut 2, and the nut 2 is rotated to the top of the thread of the bolt 1, namely the junction of the thread section and the smooth section of the bolt rod. Then the inner taper sleeve nut 4 is plugged into the taper hole of the outer taper sleeve nut 3 and then penetrates into one side of the mounting hole of the perforated steel plate 5, so that the outer surface of the cylindrical main body 31 is in contact with the wall of the mounting hole. And then the bolt 1 sleeved with the nut 2 is screwed into the internal thread part of the inner taper sleeve nut 4 from the other side of the perforated steel plate 5. The bolt 1 is slightly pulled towards the bolt cap side so that the inner taper sleeve nut 4 is attached to the outer taper sleeve nut 3, and then the bolt 1 can be fastened only by screwing the nut at the bolt side. Along with the screwing of bolt 1, nut 2 and taper sleeve nut sub-assembly distance reduce gradually, and tight until outer taper sleeve nut 3 and nut 2 contact top, interior taper sleeve nut 4 rises along the tapering of outer taper sleeve nut 3 under the screw-thread fit, and it is big and then eliminated the gap of outer taper sleeve nut 3 and the mounting hole of trompil steel sheet 5 to open outer taper sleeve nut 3 that has vertical through seam one by interior taper sleeve nut 2, and it can not be ejecting along with interior taper sleeve nut 4 rises to enlarge cylinder 32 assurance outer taper sleeve nut 3. The cone 41 of the inner taper sleeve nut 4 is simultaneously squeezed and deformed by the counterforce of the outer taper sleeve nut 3, the inner thread nut 4 is tightly bitten with the thread of the bolt, and the gap between the inner taper sleeve nut 4 and the thread part of the bolt is eliminated. And finally, the gap between the bolt 1 and the mounting hole of the perforated steel plate 5 can be completely eliminated, and the bolt 1 and the perforated steel plate 5 are tightly connected. And because the inner taper sleeve nut and the outer taper sleeve nut are in wedge-shaped self-locking connection, the inner taper sleeve nut and the outer taper sleeve nut can be pulled more and more tightly in the stress process of the bolt connecting piece and cannot be separated from the perforated steel plate 5. The concrete can then be poured normally or the precast concrete slab 6 where the reserved hole is placed supplemented with a small amount of cast-in-place concrete.
When the bolt connecting piece is disassembled, because the bolt cap side of the bolt connecting piece is poured into the concrete slab 6, only the hexagon nut 42 part at the bottom of the inner taper sleeve nut 4 can be reversely rotated and withdrawn, and the outer taper sleeve nut 3 can automatically fall off after losing the supporting force of the inner taper sleeve nut 4, thereby realizing the replacement of the rusty deformed steel beam or the deteriorated concrete slab. Therefore, the invention can improve the shearing-resistant bearing capacity and the vibration-resistant performance of the bolt. The steel plate hole punching device has the characteristics of simple installation, low requirement on hole punching precision of the steel plate and unidirectional fastening. And the taper sleeve nut assembly can be disassembled, so that the replacement of a deformed and rusted steel plate or a deteriorated concrete plate can be realized, and the service life of the structure is prolonged.
As noted above, while the present invention has been shown and described with reference to certain preferred examples, it is not to be construed as limited thereby. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a taper sleeve nut sub-assembly, its characterized in that, includes outer taper sleeve nut (3) and interior taper sleeve nut (4), wherein, the centre bore of outer taper sleeve nut (3) is the bell mouth, and hole top diameter is less than hole bottom diameter, the upper portion of interior taper sleeve nut (4) is cone (41), cone (41) can be put into bell mouth and conical surface cooperation, the centre bore of interior taper sleeve nut (4) is for being used for carrying out the straight thread hole that fastens with bolt (1) each other for revolving.
2. The taper nut assembly according to claim 1, wherein said outer taper nut (3) is composed of an upper cylindrical body (31) for fitting into the mounting hole of the perforated steel plate (5) and a lower enlarged cylindrical body (32) for limiting, and said inner taper nut (4) is composed of an upper taper (41) and a lower hexagonal nut (42).
3. The taper sleeve nut assembly according to claim 1 or 2, wherein the outer taper sleeve nut (3) is axially provided with a first vertical through-slit with a through-wall thickness, and the taper body (41) is provided with a second vertical through-slit with a through-wall thickness.
4. The taper sleeve nut assembly according to claim 3, wherein the width of the first vertical through seam is 1-3 mm, and the width of the second vertical through seam is 1-2 mm.
5. The coned nut assembly of claim 2, wherein said hex nut (42) includes a nylon ring or steel sheet self-locking mechanism.
6. The coned bushing nut assembly of claim 1, characterized in that the inner coned bushing nut (4) has a greater height than the outer coned bushing nut (3).
7. A connecting structure of a taper sleeve nut combination and a bolt connecting piece according to any one of claims 1 to 5, characterized in that the outer taper sleeve nut (3) is inserted into a mounting hole of an open-pore steel plate (5), the cone body (41) is inserted into the tapered hole, and the bolt (1) is screwed and fastened with the straight threaded hole of the cone body (41) through the outer taper sleeve nut (3).
8. The connection structure of claim 7, wherein the outer wall of the outer taper sleeve nut (3) is in transition fit with the inner wall of the mounting hole of the perforated steel plate (5).
9. The connection structure according to claim 7, wherein the bolt (1) is a hexagon head bolt, a screw, a stud or a screw rod, the perforated steel plate (5) is a section steel or a one-layer or multi-layer steel plate, and the mounting hole is a circular hole.
10. The connecting structure of claim 7, wherein a nut (2) is arranged on the bolt (1) above the perforated steel plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122431071.5U CN216044872U (en) | 2021-10-09 | 2021-10-09 | Taper sleeve nut assembly and connecting structure of taper sleeve nut assembly and bolt connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122431071.5U CN216044872U (en) | 2021-10-09 | 2021-10-09 | Taper sleeve nut assembly and connecting structure of taper sleeve nut assembly and bolt connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216044872U true CN216044872U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122431071.5U Active CN216044872U (en) | 2021-10-09 | 2021-10-09 | Taper sleeve nut assembly and connecting structure of taper sleeve nut assembly and bolt connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216044872U (en) |
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2021
- 2021-10-09 CN CN202122431071.5U patent/CN216044872U/en active Active
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