CN215333846U - Special split type crab-bolt of antidetonation support - Google Patents
Special split type crab-bolt of antidetonation support Download PDFInfo
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- CN215333846U CN215333846U CN202120395131.XU CN202120395131U CN215333846U CN 215333846 U CN215333846 U CN 215333846U CN 202120395131 U CN202120395131 U CN 202120395131U CN 215333846 U CN215333846 U CN 215333846U
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- expansion sleeve
- sleeve
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- anchor bolt
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Abstract
The utility model discloses a special split anchor bolt for an anti-seismic support, which comprises a screw rod, an expansion sleeve and a nut, wherein the expansion sleeve comprises a male sleeve and a female sleeve which are arranged in a split manner in the radial direction, the expansion sleeve is sleeved outside the screw rod, two ends of the screw rod extend out of the expansion sleeve, one end of the screw rod is in threaded connection with the nut, and the other end of the screw rod is provided with a frustum-shaped expansion head. The utility model provides a special split anchor bolt for an anti-seismic bracket, wherein an expansion sleeve is arranged in a split manner, so that when a nut is screwed down, the expansion sleeve integrally expands outwards, and the expansion sleeve and an external structure are more reliably fixed; the expansion sleeve is arranged in a split mode, so that the processing difficulty and the processing cost of the expansion sleeve can be reduced, and the expansion sleeve can be formed by pressing after being cut by an iron plate.
Description
Technical Field
The utility model relates to the technical field of support equipment, in particular to a special split type anchor bolt for an anti-seismic support.
Background
In view of the great destructiveness of earthquake, the earthquake resistance is an important construction index which must be considered before building construction, and the laying of pipelines in the building is an important factor influencing the earthquake resistance; the earthquake-resistant support is used for installing electromechanical engineering facilities such as building water supply, drainage, fire fighting, heating, ventilation, air conditioning, gas, electric power, heating power, communication and the like, can limit the displacement of the attached electromechanical engineering facilities when an earthquake occurs, controls the vibration of the facilities, transmits load to various components or devices on a bearing structure, lightens earthquake damage, and reduces or prevents secondary disasters as much as possible, thereby reducing casualties and property loss; seismic supports are often fixed to floors, walls or columns by means of expansion anchors. Anchor bolts in the prior art generally comprise a screw rod, an expansion sleeve and a nut, and one end of the expansion sleeve is extruded by the screw rod and the nut to expand outwards to realize fixation, wherein the expansion sleeve is generally an integrally arranged sleeve, and one end of the expansion sleeve is provided with an axial groove to expand the sleeve outwards. However, the expansion sleeve has large elastic resistance, is not beneficial to screwing expansion, has small expandable part, small contact area between the expansion sleeve and the mounting hole, and unstable mounting structure. Therefore, design a special split type crab-bolt of antidetonation support, with the setting of expansion sleeve components of a whole that can function independently, can be when the nut is screwed up, the whole outwards inflation of expansion sleeve makes expansion sleeve and exterior structure fixed more reliable.
Chinese patent application publication No. CN107429721B, published as 26/07/2019, entitled "expansion anchor", discloses an expansion anchor which can be fixed in a borehole, having an expansion sleeve for anchoring to the borehole wall and an anchor shank which passes through the expansion sleeve and has an expansion region for expanding the expansion sleeve, wherein the expansion sleeve has a first annular groove on its outer side which extends to a front end face of the expansion sleeve which faces the expansion region. According to the utility model, the expansion sleeve has a second annular groove on its outer side, and an annular rib is arranged between the first annular groove and the second annular groove. However, the expansion anchor still has the above-mentioned problems.
Disclosure of Invention
The utility model provides a split anchor bolt special for an anti-seismic support, aiming at overcoming the defects that an expansion sleeve of the anti-seismic support in the prior art is large in elastic resistance, not beneficial to screwing expansion, small in expandable part, small in contact area with an installation hole and unstable in installation structure, and the expansion sleeve is arranged in a split mode, so that the expansion sleeve can be integrally expanded outwards when a nut is screwed down, and the expansion sleeve and an external structure can be more reliably fixed.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a special split type crab-bolt of antidetonation support, includes screw rod, expansion sleeve and nut, and expansion sleeve includes public sleeve and the female sleeve that radial components of a whole that can function independently set up, and expansion sleeve overlaps and establishes in the outside of screw rod, and expansion sleeve is stretched out at the both ends of screw rod, the one end and the nut threaded connection of screw rod, and the other end of screw rod is equipped with frustum shape expansion head.
According to the technical scheme, all parts are subjected to hot galvanizing treatment, the thickness of the coating is uniform and firm, and the threads can be screwed normally. Through setting up expansion sleeve components of a whole that can function independently, can make expansion sleeve expand more easily when the nut is screwed up, fix the crab-bolt, and when expansion sleeve expanded, can wholly outwards expand, the resistance is littleer, and for the outside mode of expansion sleeve's among the prior art one end, above-mentioned technical scheme can make expansion sleeve and exterior structure more reliable be connected fixedly. Meanwhile, the expansion sleeve is arranged in a split mode, the processing difficulty and the processing cost of the expansion sleeve can be reduced, and the expansion sleeve can be formed by bending after being cut through an iron plate.
Preferably, the screw comprises a connecting section and a threaded section, the frustum-shaped expansion head and the threaded section are respectively arranged at two ends of the connecting section, and the outer diameter of the threaded section is larger than the diameter of the connecting section. The external diameter of screw thread section is greater than the diameter of linkage segment, has both guaranteed screw thread intensity, has reduced the external diameter of expansion sleeve and the mounting hole diameter on the building again, does benefit to the expansion anchor bolt miniaturization and the material use is less, and it is less to reduce building intensity. The expansion sleeve is provided with an avoidance step hole for avoiding the thread section.
Preferably, the male sleeve is provided with a positioning bump, and the female sleeve is provided with a positioning clamping groove matched with the positioning bump. The structure can play a role in axial positioning when the expansion sleeve is spliced.
Preferably, the number of the positioning lugs is two, and the two positioning lugs are symmetrically arranged on the male sleeve; the number of the positioning clamping grooves is two, and the two positioning clamping grooves are symmetrically arranged on the female sleeve. The structure can make the positioning more accurate.
Preferably, the side wall of the expansion sleeve is provided with a groove, and the groove is arranged on the positions of the positioning bump and the positioning clamping groove. The groove can enable concrete of a building to be embedded into the groove, can increase friction between the expansion sleeve and a mounting hole in the building, ensures fixing reliability, can also be sleeved with the elastic rubber lantern ring at the position, and enables the expansion sleeve not to be loosened and scattered easily during mounting.
Preferably, the nut further comprises a flat gasket, and the flat gasket is arranged between the expansion sleeve and the nut.
Preferably, a spring washer is arranged between the flat washer and the nut. The structure makes the nut not easy to loosen.
Preferably, a limiting ring groove is formed in the side wall of one end, close to the frustum-shaped expansion head, of the expansion sleeve. An elastic rubber ring can be sleeved on the limiting ring groove, so that the expansion sleeve is not easy to loosen and scatter when being installed.
Preferably, one end of the expansion sleeve, which is close to the frustum-shaped expansion head, is provided with an axial groove. The structure may provide a more uniform outward expansion of one end of the expansion sleeve.
The utility model has the beneficial effects that: (1) the expansion sleeve is arranged in a split manner, so that when the nut is screwed down, the whole expansion sleeve expands outwards, and the expansion sleeve and an external structure are more reliably fixed; (2) the expansion sleeve is arranged in a split mode, so that the processing difficulty and the processing cost of the expansion sleeve can be reduced, and the expansion sleeve can be formed by pressing after being cut by an iron plate.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is an isometric view of the present invention;
FIG. 3 is a schematic view of the construction of the male sleeve of the present invention;
FIG. 4 is a schematic view of the structure of the screw of the present invention.
In the figure: the screw rod 1, frustum-shaped expansion head 1.1, connecting section 1.2, thread section 1.3, expansion sleeve 2, male sleeve 2.1, positioning lug 2.1.1, female sleeve 2.2, positioning clamping groove 2.2.1, groove 2.3, limiting ring groove 2.4, axial groove 2.5, nut 3, flat gasket 4 and spring gasket 5.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1 and fig. 2, the special split anchor bolt for the anti-seismic support comprises a screw rod 1, an expansion sleeve 2, a nut 3, a flat gasket 4 and a spring gasket 5, wherein the expansion sleeve 2 comprises a male sleeve 2.1 and a female sleeve 2.2 which are arranged in a split manner in the radial direction, the expansion sleeve 2 is sleeved outside the screw rod 1, two ends of the screw rod 1 extend out of the expansion sleeve 2, one end of the screw rod 1 is in threaded connection with the nut 3, and the other end of the screw rod 1 is provided with a frustum-shaped expansion head 1.1. As shown in fig. 4, the screw rod 1 includes a connecting section 1.2 and a thread section 1.3, the frustum-shaped expansion head 1.1 and the thread section 1.3 are respectively disposed at two ends of the connecting section 1.2, and the outer diameter of the thread section 1.3 is larger than the diameter of the connecting section 1.2. The male sleeve 2.1 is provided with two positioning lugs 2.1.1, and the two positioning lugs 2.1.1 are symmetrically arranged on the male sleeve 2.1; the female sleeve 2.2 is provided with two positioning clamping grooves 2.2.1, the two positioning clamping grooves 2.2.1 are symmetrically arranged on the female sleeve 2.2, and the positioning clamping grooves 2.2.1 are matched with the positioning lugs 2.1.1; the side wall of the expansion sleeve 2 is provided with a groove 2.3, and the groove 2.3 is arranged at the position of the positioning lug 2.1.1 and the positioning clamping groove 2.2.1. A flat washer 4 is arranged between the expansion sleeve 2 and the nut 3 and a spring washer 5 is arranged between the flat washer 4 and the nut 3. The side wall of one end of the expansion sleeve 2 close to the frustum-shaped expansion head 1.1 is provided with a limit ring groove 2.4. One end of the expansion sleeve 2 close to the frustum-shaped expansion head 1.1 is provided with an axial groove 2.5.
According to the technical scheme, all parts are subjected to hot galvanizing treatment, the thickness of the coating is uniform and firm, and the threads can be screwed normally. Through setting up expansion sleeve 2 components of a whole that can function independently, can make expansion sleeve 2 expand more easily when nut 3 is screwed up, fixed with the crab-bolt, and when expansion sleeve 2 expanded, can wholly outwards expand, the resistance is littleer, and for the outside mode of the outside one end of expansion sleeve 2 among the prior art, above-mentioned technical scheme can make expansion sleeve 2 and outer structure more reliable be connected fixedly. Meanwhile, the expansion sleeve 2 is arranged in a split mode, so that the processing difficulty and the processing cost of the expansion sleeve 2 can be reduced, and the expansion sleeve can be formed by bending after being cut by an iron plate.
The utility model has the beneficial effects that: (1) the expansion sleeve 2 is arranged in a split manner, so that when the nut 3 is screwed down, the expansion sleeve 2 integrally expands outwards, and the expansion sleeve 2 and an external structure are more reliably fixed; (2) the expansion sleeve 2 is arranged in a split mode, so that the processing difficulty and the processing cost of the expansion sleeve 2 can be reduced, and the expansion sleeve can be formed by pressing after being cut by an iron plate.
Claims (8)
1. A special split anchor bolt for an anti-seismic support is characterized by comprising a screw, an expansion sleeve and a nut, wherein the expansion sleeve comprises a male sleeve and a female sleeve which are arranged in a split manner in the radial direction; and a limiting ring groove is arranged on the side wall of one end of the expansion sleeve, which is close to the frustum-shaped expansion head.
2. The split type anchor bolt special for the anti-seismic bracket as claimed in claim 1, wherein the screw comprises a connecting section and a threaded section, the frustum-shaped expansion head and the threaded section are respectively arranged at two ends of the connecting section, and the outer diameter of the threaded section is larger than the diameter of the connecting section.
3. The split type anchor bolt special for the anti-seismic bracket as claimed in claim 1, wherein the male sleeve is provided with a positioning bump, and the female sleeve is provided with a positioning slot adapted to the positioning bump.
4. The split type anchor bolt special for the anti-seismic bracket as claimed in claim 3, wherein the number of the positioning lugs is two, and the two positioning lugs are symmetrically arranged on the male sleeve; the number of the positioning clamping grooves is two, and the two positioning clamping grooves are symmetrically arranged on the female sleeve.
5. The split anchor bolt special for the anti-seismic bracket as claimed in claim 3, wherein the side wall of the expansion sleeve is provided with a groove, and the groove is arranged at the position of the positioning lug and the positioning clamping groove.
6. A split anchor bolt special for an anti-seismic bracket according to claim 1, 2, 3, 4 or 5, further comprising a flat gasket, wherein the flat gasket is arranged between the expansion sleeve and the nut.
7. The split type anchor bolt special for the anti-seismic bracket as claimed in claim 6, wherein a spring washer is arranged between the flat washer and the nut.
8. A split anchor bolt special for an anti-seismic bracket as defined in claim 1, 2, 3, 4 or 5, wherein an axial groove is formed at one end of the expansion sleeve close to the frustum-shaped expansion head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120395131.XU CN215333846U (en) | 2021-02-22 | 2021-02-22 | Special split type crab-bolt of antidetonation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120395131.XU CN215333846U (en) | 2021-02-22 | 2021-02-22 | Special split type crab-bolt of antidetonation support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215333846U true CN215333846U (en) | 2021-12-28 |
Family
ID=79581794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120395131.XU Active CN215333846U (en) | 2021-02-22 | 2021-02-22 | Special split type crab-bolt of antidetonation support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215333846U (en) |
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2021
- 2021-02-22 CN CN202120395131.XU patent/CN215333846U/en active Active
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