CN203702790U - Self-undercut mechanical bolt - Google Patents
Self-undercut mechanical bolt Download PDFInfo
- Publication number
- CN203702790U CN203702790U CN201420079563.XU CN201420079563U CN203702790U CN 203702790 U CN203702790 U CN 203702790U CN 201420079563 U CN201420079563 U CN 201420079563U CN 203702790 U CN203702790 U CN 203702790U
- Authority
- CN
- China
- Prior art keywords
- expansion
- autotomying
- undercut
- self
- mechanical anchor
- 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 - Fee Related
Links
Landscapes
- Dowels (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model discloses a self-undercut mechanical bolt. The self-undercut mechanical bolt comprises a screw and an expansion piece assembly; the screw extends into the expansion piece assembly and a nut is arranged at the head end of the screw; the expansion piece assembly comprises a first sleeve and a second expansion piece assembly, a plurality of expansion pieces are formed at intervals between the first sleeve and the second sleeve, and multi-expansion layers are arranged on the expansion pieces and connected together by use of neck portions thereof; an expansion part is arranged on the tail of the first sleeve. The self-undercut mechanical bolt is capable of squeezing a sidewall of a drilled hole more firmly while expanding and also capable of realizing multi-expansion, and the tensile strength and the shearing resistance generated by the self-undercut mechanical bolt are higher.
Description
Technical field
The utility model relates to the one end mechanical anchor of autotomying.
Background technique
The end mechanical anchor of autotomying is applicable to the different connections of supporting such as various curtain wall constructions and steel structure with fixing, industrial premises, and civil building, antitheft door, the installation of burglary-resisting window etc. is fixed all needs to use the end mechanical anchor of autotomying.
The existing end mechanical anchor of autotomying, generally includes screw rod, body and nut, is arranged in pre-processed boring, and the enforcement anchoring of can expanding of body bottom, has higher bearing capacity.But this traditional mechanical anchor, adopts single intumescent sheet substantially, needs anti-pulling intensity and shearing resistance larger in, may there is risk in its bearing capacity having.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of many intumescent sheets, when expansion, borehole sidewall is pushed to the end mechanical anchor of more firmly autotomying.
For solving the problems of the technologies described above, the autotomy technical solution of end mechanical anchor of the utility model is:
The one end mechanical anchor of autotomying, is characterized in that: comprise screw rod, expansion piece assembly, screw rod stretches in expansion assembly, and screw rod head end is provided with nut; Described expansion assembly comprises the first body and the second body, and between described the first body and the second body, interval forms multiple intumescent sheets, and described intumescent sheet is provided with repeatedly expanding layer, repeatedly between expanding layer, connects by neck; The afterbody of described the first body is provided with bulge.
The diameter of the expanding layer on described intumescent sheet is less than the diameter of neck.
The length of described repeatedly expanding layer is isometric.
The bulge outer rim of the afterbody of described the first body is provided with multiple tracks groove, and groove extends axially along the first body, from the tail end of the first body until approach the tail end of intumescent sheet.
The technique effect that the utility model can reach is:
The end mechanical anchor of autotomying of the present utility model, body adopts merogenesis structure, between the first body and the second body, interval forms multiple intumescent sheets, after in crab-bolt prepackage shot borehole, screw nut, now, the expanding in succession of the intumescent sheet between the bulge of the first body afterbody, the first body and the second body, extruding force to the sidewall in boring is larger, and the intensity of whole crab-bolt carrying is larger.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the utility model structural representation of end mechanical anchor of autotomying;
Fig. 2 is the utility model three-dimensional exploded view of end mechanical anchor of autotomying.
Description of reference numerals in figure:
1 is screw rod; 2 is the first body;
3 is the second body; 4 is nut;
5 is intumescent sheet; 6 is expanding layer;
7 is neck; 8 is groove.
Embodiment
As shown in Figure 1 and Figure 2, the utility model provides the one end mechanical anchor of autotomying, and comprises screw rod (1), expansion piece assembly, and screw rod (1) stretches in expansion assembly, and screw rod (1) head end is provided with nut (4); Described expansion assembly comprises the first body (2) and the second body (3), between described the first body (2) and the second body (3), interval forms multiple intumescent sheets (5), described intumescent sheet (5) is provided with repeatedly expanding layer (6), repeatedly between expanding layer (6), connects by neck (7); The afterbody of described the first body (2) is provided with bulge.
If need to obtain larger anti-pulling intensity and shearing resistance, can be on the basis of the first body (2) and the second body (3), up increasing body, is still that interval forms multiple intumescent sheets between bodies at different levels again, realizes the expansion of multilayer.
The diameter of the expanding layer (6) on described intumescent sheet (5) is less than the diameter of neck (7).
The length of described repeatedly expanding layer (6) is isometric.
The bulge outer rim of the afterbody of described the first body (2) is provided with multiple tracks groove (8), groove (8) extends axially along the first body (2), from the tail end of the first body (2) until approach the tail end of intumescent sheet (5).
When installation, first, determine drilling depth according to the requirement of the specifications and models of crab-bolt with common percussion drill, and bore diameter; Secondly, adopt hand pump or start pump and carry out hole clearly, in hole, must clean out; Again, before installation, first all parts of crab-bolt is tightened, guaranteed that each assembly is not loosening, then insert in the hole of accomplishing fluently; Then, with torque spanner, crab-bolt nut is tightened; Finally, unclamp the nut in crab-bolt, will install by fixing coupling, use torque spanner fastening nut.
The end mechanical anchor of autotomying above the utility model embodiment being provided is described in detail, applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand the technological scheme that the utility model discloses; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.
Claims (4)
1. the end mechanical anchor of autotomying, is characterized in that: comprise screw rod (1), expansion piece assembly, screw rod (1) stretches in expansion assembly, screw rod (1) head end is provided with nut (4); Described expansion assembly comprises the first body (2) and the second body (3), between described the first body (2) and the second body (3), interval forms multiple intumescent sheets (5), described intumescent sheet (5) is provided with repeatedly expanding layer (6), repeatedly between expanding layer (6), connects by neck (7); The afterbody of described the first body (2) is provided with bulge.
2. the one according to claim 1 end mechanical anchor of autotomying, is characterized in that: the diameter of the expanding layer (6) on described intumescent sheet (5) is less than the diameter of neck (7).
3. the one according to claim 1 end mechanical anchor of autotomying, is characterized in that: the length of described repeatedly expanding layer (6) is isometric.
4. the one according to claim 1 end mechanical anchor of autotomying, it is characterized in that: the bulge outer rim of the afterbody of described the first body (2) is provided with multiple tracks groove (8), groove (8) extends axially along the first body (2), from the tail end of the first body (2) until approach the tail end of intumescent sheet (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079563.XU CN203702790U (en) | 2014-02-25 | 2014-02-25 | Self-undercut mechanical bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079563.XU CN203702790U (en) | 2014-02-25 | 2014-02-25 | Self-undercut mechanical bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702790U true CN203702790U (en) | 2014-07-09 |
Family
ID=51053241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079563.XU Expired - Fee Related CN203702790U (en) | 2014-02-25 | 2014-02-25 | Self-undercut mechanical bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702790U (en) |
-
2014
- 2014-02-25 CN CN201420079563.XU patent/CN203702790U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP4242422A3 (en) | Friction bolt | |
| WO2011117612A1 (en) | Fixing element | |
| CN108843667B (en) | Novel expansion anchor bolt | |
| EP3561190B1 (en) | Screw-in anchor bolt and method for installing curtain wall and panel therewith | |
| DE102006006164A1 (en) | Fastening system for components to a supporting substrate as well as method and assembly aid for attaching the fastening system | |
| WO2018013528A3 (en) | Corrosion resistant yieldable bolt | |
| DK2397705T3 (en) | ANCHORAGE SYSTEM FOR spaced, tension-ASSEMBLY OF A PÅMONTERINGSDEL ON AN ANCHOR BASE | |
| CN205423444U (en) | Machinery of being applied to metal structure of mounting that expands | |
| CN203756688U (en) | Rear undercut anchor | |
| JP2017161067A5 (en) | ||
| CN203702790U (en) | Self-undercut mechanical bolt | |
| CA2873843A1 (en) | Unitary, strike, drop-in anchor for concrete and the like | |
| CN106415027B (en) | Fixing means | |
| CN203906478U (en) | Novel expansion bolt | |
| CN204572677U (en) | Cut end crab-bolt | |
| CN103967901A (en) | Novel expansion bolt | |
| CN204003871U (en) | A kind of setscrew that utilizes hammering mode to install | |
| EP3333434A1 (en) | Wall fixings | |
| CN203430944U (en) | Expansion nut and disassembly tool for disassembling expansion nut | |
| CN103697028A (en) | Honeycomb sandwich panel insert and installation method thereof | |
| JP2014145154A (en) | Post-construction bent anchor bolt and construction method of the same | |
| CN103790387A (en) | Method for installing and connecting decoration and heat preservation combined plates on hollow block wall | |
| CN103114697B (en) | The eccentric crescent moon combined bolt of screw-type and mounting method thereof | |
| CN203113328U (en) | Tubular pile reinforcing device | |
| CN204851905U (en) | Dual fastening end machinery crab -bolt of autotomying |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20190225 |