CN2050500U - Conical plug high stationary expansion bolt - Google Patents
Conical plug high stationary expansion bolt Download PDFInfo
- Publication number
- CN2050500U CN2050500U CN 89203765 CN89203765U CN2050500U CN 2050500 U CN2050500 U CN 2050500U CN 89203765 CN89203765 CN 89203765 CN 89203765 U CN89203765 U CN 89203765U CN 2050500 U CN2050500 U CN 2050500U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- bolt
- utility
- model
- conical plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model relates to a conical plug high stationary expansion bolt, which is a metal fastening connector for fixing articles on the surfaces of brickworks made of concrete and brick stones. The utility model is composed of a screw rod and a tapered plug. The bulge at one end of the screw rod is hemisphere-shaped; the other end of the screw rod is provided with a conical bore and a cross gap or a line-shaped gap; the tapered plug is arranged in the conical bore. Compared with the performance of the existing casing type expansion bolts, the utility model has the advantages of high upright resistance, high safety of anchoring performance, high firmness of the screw bolt in horizontal direction in holes, convenient construction, etc.
Description
The utility model belongs to the metal fastening connection piece that object is fixed on concrete and masonry surface.
At present, the bushing type EXPANSION ANCHOR BOLTS has obtained extensive use as hardware products in building construction at aspects such as Architectural Equipment installation, building decoration engineering, building structure maintenances.The anchored end of this bolt is " seedpod of the lotus " shape, the overhead cover of tightening latch one short steel pipes, the cross opening is left in the steel pipe lower end, after being placed in bolt in concrete or the masonry surface brill hole well, sleeve pipe is pounded into the hole bottom, screwed the nut on the bolt exposed junction, bolt is moved outside the hole, " seedpod of the lotus " of bolt anchoring end head relies on the sleeve pipe distending on the frictional force between distending sleeve pipe and hole inwall, bolt by anchor tightly in hole.Existing bushing type EXPANSION ANCHOR BOLTS is because the sleeve pipe appearance is a smooth surface, and the hole inwall also is a smooth surface, and two smooth surfaces contact and are unfavorable for improving frictional force, and the fastening destruction form of this bolt is bolt and is pulled out with sleeve pipe; Because the expansive force size of EXPANSION ANCHOR BOLTS depends on that sleeve pipe is by the degree of distending, and sleeve pipe distending degree depends on the pipe thickness of sleeve pipe, now the casing wall thickness of Shi Yonging is about 1mm, and the maximum diameter increment size after bolt expands only is that this expansion fashion has limited the expansive force of bolt about 2mm; Owing to leave bigger space between sleeve pipe and the bolt shank, after the anchoring, bolt still can be in sleeve pipe horizontal jitter, influenced the steadiness of the substantially horizontal after this bolt anchoring, connect the object that bears vibrations or multidirection horizontal load and be suitable for; After this EXPANSION ANCHOR BOLTS expanded, the friction area of sleeve pipe and hole only limited near the anchored end maximum diameter cross-sectional periphery, from ceiling structure system the frictional force between raising sleeve pipe and the hole inwall; The use difficulty of this bolt is big, and during with electric hammer (electric impact drill) boring, the overgauge that needs accurately to control the aperture is not more than casing wall thickness, otherwise can cause the instability of bolt anchoring performance.
The purpose of this utility model: be to improve the above-mentioned defective of bushing type EXPANSION ANCHOR BOLTS, for construction engineering provides that a kind of anchoring strength is big, good stability, the use difficulty high anchor force EXPANSION ANCHOR BOLTS of cone plug type little, stable and reliable for performance.
The high anchor force EXPANSION ANCHOR BOLTS of cone plug type of the present utility model is made up of equal diameter screw rod and conical plug.Equal diameter bolt total length surface is provided with screw thread, when screw rod is longer, also can only establish screw thread in the certain-length of screw rod two ends; One end of screw rod is an exposed junction, and the exposed junction top bump is hemispherical, and the other end is an anchored end, and a round taper hole is arranged at anchored end bottom, and has cross stitch, and screw diameter hour is a word seam, and the length of cracking is greater than the round taper hole degree of depth; Conical plug is set in the round taper hole, and conical plug is identical with the angle of round taper hole, and the maximum diameter of conical plug exposed parts is not more than the diameter of screw rod during use.
The working principle of the high anchor force EXPANSION ANCHOR BOLTS of cone plug type of the present utility model is: at concrete or masonry surface drilling, the aperture is identical with the screw rod external diameter, after screw rod put into hole, the hemispherical top that the hammering screw rod exposes, conical plug in the anchored end cone shape hole is by the anti-cone shape hole that heads into, make the screw rod anchored end in hole along the distending that cracks on the screw rod anchored end, the screw surface screw thread embeds hole wall under the expansive force effect, the anchored end of screw rod forms a cone in hole.The cone that forms behind the anchored end distending provides with the contact friction area of hole wall and the extrusion stress on the surface of contact for screw rod, and the mechanical snap of thread surface and hole inwall has strengthened the ability of opposing slippage between the two.
High anchor force EXPANSION ANCHOR BOLTS of cone plug type of the present utility model and existing bushing type EXPANSION ANCHOR BOLTS at the anchoring property comparing result under the same outer diameter as situation are: before taking place obviously to extract displacement, the withdrawal resistance of the high anchor force EXPANSION ANCHOR BOLTS of cone plug type is 3 times of bushing type EXPANSION ANCHOR BOLTS; Ultimate pullout capacity is more than 2 times; Under the limit was extracted loading condition, the high anchor force EXPANSION ANCHOR BOLTS of cone plug type increased with extracting displacement, and the anchor force decay of bolt is very slow, helped improving the margin of safety of bolt anchoring performance.The high anchor force EXPANSION ANCHOR BOLTS of cone plug type of the present utility model has increased the surface of contact of screw rod and hole wall, so bolt steadiness of substantially horizontal in hole obviously improves because screw surface has screw thread; Requirement with the hole diameter overgauge obviously reduces to concrete and masonry screw rod, has made things convenient for construction.
The anchoring property test of the high anchor force EXPANSION ANCHOR BOLTS of cone plug type of the present utility model also shows, the screw thread of the anchored end when bolt is pulled out can be damaged, the intensity of bolt steel and the hardness of thread surface have direct relation, therefore, suitably improve the intensity of bolt steel, help improving the withdrawal resistance of bolt, and the ability of bolt exposed junction thread surface resistance to deformation when being subjected to hammering.
Below in conjunction with drawings and Examples the high anchor force EXPANSION ANCHOR BOLTS of cone plug type of the present utility model is further described.
Fig. 1 is the structural representation of the high anchor force EXPANSION ANCHOR BOLTS of the utility model cone plug type.
As seen from the figure, the exposed junction of long bolt 1 stand tall and upright for the Na clam of projection and fears the long 150mm of screw rod among the wise of pool silk , diameter 12mm, the screw rod total length is provided with screw thread 2, and the length of cracking of screw rod anchoring is 50mm, conical plug 4 length are 30mm, and maximum diameter is 8mm, and steel is the 45# steel.
Conical plug high stationary expansion bolt can be produced according to the diameter modulus of present standard mechanical bolt, directly uses nut and the packing ring of dimension, forms the series of products that are applicable to many-sided purposes.
Claims (2)
1, the high anchor force EXPANSION ANCHOR BOLTS of a kind of cone plug type, it is characterized in that: be made up of equal diameter screw rod and conical plug, equal diameter screw rod upper end is provided with the hemispherical of a projection, and the lower end has cross stitch and cone shape hole, the length of cracking is greater than the cone shape hole degree of depth, and equal diameter screw surface total length or two ends are provided with screw thread; Conical plug is located in the cone shape hole of equal diameter screw rod, and the tapering of conical plug is identical with the tapering of the round taper hole of screw rod.
2, the high anchor force EXPANSION ANCHOR BOLTS of cone plug type as claimed in claim 1 is characterized in that: it can be word seam that equal diameter screw rod one end cracks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89203765 CN2050500U (en) | 1989-04-04 | 1989-04-04 | Conical plug high stationary expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89203765 CN2050500U (en) | 1989-04-04 | 1989-04-04 | Conical plug high stationary expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2050500U true CN2050500U (en) | 1990-01-03 |
Family
ID=4861255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89203765 Expired - Lifetime CN2050500U (en) | 1989-04-04 | 1989-04-04 | Conical plug high stationary expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2050500U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101305156B (en) * | 2005-11-11 | 2012-01-11 | Tracto技术有限公司 | Earth auger |
| US8235148B2 (en) | 2005-11-11 | 2012-08-07 | Tracto-Technik Gmbh | Thread retention for an earth boring device |
| CN103867543A (en) * | 2014-03-10 | 2014-06-18 | 苏州捷德瑞精密机械有限公司 | Expansion screw |
| CN105465138A (en) * | 2016-01-07 | 2016-04-06 | 太仓市德浩紧固件有限公司 | Self-clinching bolt |
| CN111503109A (en) * | 2020-04-13 | 2020-08-07 | 福建优点挂幕墙技术有限公司 | Single multipurpose wall anchor bolt and mounting method thereof |
-
1989
- 1989-04-04 CN CN 89203765 patent/CN2050500U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101305156B (en) * | 2005-11-11 | 2012-01-11 | Tracto技术有限公司 | Earth auger |
| US8235148B2 (en) | 2005-11-11 | 2012-08-07 | Tracto-Technik Gmbh | Thread retention for an earth boring device |
| CN103867543A (en) * | 2014-03-10 | 2014-06-18 | 苏州捷德瑞精密机械有限公司 | Expansion screw |
| CN103867543B (en) * | 2014-03-10 | 2016-01-27 | 曹胜伟 | A kind of setscrew |
| CN105465138A (en) * | 2016-01-07 | 2016-04-06 | 太仓市德浩紧固件有限公司 | Self-clinching bolt |
| CN111503109A (en) * | 2020-04-13 | 2020-08-07 | 福建优点挂幕墙技术有限公司 | Single multipurpose wall anchor bolt and mounting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |