CN202500864U - Composite expansion anchor bolt - Google Patents
Composite expansion anchor bolt Download PDFInfo
- Publication number
- CN202500864U CN202500864U CN2012200709033U CN201220070903U CN202500864U CN 202500864 U CN202500864 U CN 202500864U CN 2012200709033 U CN2012200709033 U CN 2012200709033U CN 201220070903 U CN201220070903 U CN 201220070903U CN 202500864 U CN202500864 U CN 202500864U
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- CN
- China
- Prior art keywords
- expansion
- screw
- screw rod
- nut
- bolt
- 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
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Abstract
The utility model discloses a composite expansion anchor bolt, which comprises a nut, a screw, an intermediate casing, a self-tangency expansion ring and a bidirectional expansion component. A thread section is arranged at the outer end of the screw and a wedged head is arranged at the inner end of the screw. The self-tangency expansion ring is sleeved on the screw. A second expansion piece is formed at the inner end of the self-tangency expansion ring corresponding to the wedged head. The bidirectional expansion component comprises two expansion parts sleeved on the screw. A plurality of spaced first expansion pieces and wedged faces are formed at opposite ends of the two expansion parts. Each first expansion piece of one expansion part opposites to the corresponding wedged face of the other expansion part. The intermediate casing is sleeved on the screw. The nut is sleeved at the outer end of the screw in a screwed manner. The included angle between the inclined plane of the wedged head and a central axis of the screw is larger than that of each wedged face of the expansion parts and the central axis of the screw. The composite expansion anchor bolt is fine in anchoring effect, less in components and simple in structure.
Description
Technical field
The utility model belongs to the technical field of building anchor bolt, particularly a kind of composite expanded crab-bolt.
Background technique
Traditional building anchor bolt is as shown in Figure 1; Form by nut 100, screw rod 200 and expansion piece 300; The inner end of screw rod 200 has sphenocephaly 201, expansion piece 300 in a tubular form and the inner end have intumescent sheet 301, expansion piece 300 is enclosed within on the screw rod 200; Its intumescent sheet 301 is against on the sphenocephaly 201, and nut 100 swivel nuts are in the outer end of screw rod 200.
During installation, the screw rod that is with expansion piece 300 200 is inserted in the good base material hole of brill, more plug-in thing is hung on the outer end of screw rod 200; Then, nut 100 swivel nuts on screw rod 200, are pushed expansion piece 300 through screwing nut 100 in the base material hole; Make inner end intumescent sheet 301 distending under the guiding of sphenocephaly 201 of expansion piece 300; Hold on to the inwall in base material hole, and make whole crab-bolt be fixed in the base material hole, reach plug-in thing is fixed on architectural purpose.
Above-mentioned crab-bolt is because the number of the intumescent sheet 301 of expansion piece 300 is few, and is little with the surface of contact in base material hole, only expand in bottom, base material hole, and expansion piece 300 can outwards move with screw rod 200 when expanding; Squeeze easily bottom, bad base material hole, simultaneously expansion piece 300 lean on nut 100 an end not against, expansion piece 300 expands also insufficient; Do not let expansion piece 300 continue the effect of expanding to a certain extent, it is not enough from shear force to expand, and particularly uses in the hollow brick body; Occur intumescent sheet 301 easily and be in the situation in the hole just, shown in Fig. 1-1, cause anchoring invalid; So fixed effect is poor, be eliminated gradually.
In the existing technology, there is a kind of crab-bolt as shown in Figure 2, forms by nut 10, screw rod 20 and at least two expansion pieces 30; Screw rod 20 has thread section 210 and bolt head 220; Nut 10 is screwed on this thread section 210, and several expansion pieces 30 are nested with one by one on the thread section 210 of screw rod 20, and the same end of each expansion piece 30 forms several intumescent sheets 310; The corresponding adjacent intumescent sheet 310 of the other end then forms sphenoid surface 320, and nut 10 or screw rod 20 corresponding intumescent sheets 310 also can form sphenoid surface.
During installation, several expansion pieces 30 are nested with on the thread section 210 of screw rod 20, and nut 10 is spun on the thread section 210 of screw rod 20; Again plug-in thing is hung on screw rod 20 and leans on the position of bolt head 220, then, with nut 10 inwardly; Insert in the pre-drilled base material hole together with expansion piece 30, screw rod 20, the screw rod 20 of screwing, perhaps inwardly with bolt head 220; Insert in the pre-drilled base material hole together with expansion piece 30, screw rod 20, the nut 10 of screwing can make intumescent sheet 310 distending under the guiding of sphenoid surface 320; Hold on to the inwall in base material hole, and make whole crab-bolt be fixed in the base material hole, reach plug-in thing is fixed on architectural purpose.
This crab-bolt is because the increase of expansion piece 30 makes the number multiplication of intumescent sheet 310, also doubles with the surface of contact in base material hole, and grasp improves greatly, so good fixing effect is widely used in the construction at present.
But this crab-bolt is because need be nested with a plurality of expansion pieces 30, and each expansion piece 30 all must form intumescent sheet 310 and sphenoid surface 320; Nut 10 or screw rod 20 corresponding intumescent sheets 310 also will form sphenoid surface, so, exist member many; Complex structure, shortcomings such as processing trouble, and also the material rigidity of member will be got well; Normally adopt car, wash technology and could process a member, manufacture difficulty.In addition, expansion piece 30 is to expand at middle part, base material hole, and is nearer from the base material outer wall, damages base material in the using process easily.
In view of this, the inventor develops a kind of novel crab-bolt, with simplified structure, reduces member, effectively anchoring, and this case produces thus.
The model utility content
The purpose of the utility model is to provide a kind of composite expanded crab-bolt, and it has good anchoring effect, and member is few, and is simple in structure.
In order to reach above-mentioned purpose, the solution of the utility model is:
A kind of composite expanded crab-bolt is made up of nut, screw rod, intermediate casing, autotomy expanding ring and two-way expansion assembly; The outer end of screw rod has thread section and the inner end has sphenocephaly; The expanding ring of autotomying is nested with on screw rod, and the corresponding sphenocephaly in inner end forms second intumescent sheet; Two-way expansion assembly is made up of two expansion pieces, and two expansion pieces are nested with on screw rod, and the opposite end of two expansion pieces all forms several alternate first intumescent sheet and sphenoid surface, and first intumescent sheet of an expansion piece is over against the sphenoid surface of another expansion piece; Intermediate casing is nested with on screw rod; The nut swivel nut is in the outer end of screw rod; The inclined-plane of sphenocephaly and the angle of screw stem are greater than the sphenoid surface of expansion piece and the angle of screw stem.
Increase plain cushion and cushion between said intermediate casing and the nut.
The second intumescent sheet outer surface of the said expanding ring of autotomying forms groove.
The first intumescent sheet outer surface of said two-way expansion assembly forms sawtooth.
After adopting said structure, when the utility model is installed, on base material, hole; To autotomy expanding ring, two-way expansion assembly and intermediate casing is enclosed within on the screw rod, and the sphenocephaly with screw rod is inserted in the pre-drilled base material hole, then inwardly again; Plug-in thing is hung on the screw rod, last, nut is spun on the screw flight section; Because the angle of the inclined-plane of sphenocephaly and screw stem greater than the sphenoid surface of expansion piece and the angle of screw stem, makes first intumescent sheet of two-way expansion assembly cooperate with sphenoid surface to be received to squeeze and deforms prior to the expanding ring of autotomying, first intumescent sheet to around distending; Hold on to the inwall in base material hole, the expansion piece of two-way expansion assembly is fixed on earlier in the base material hole, makes whole crab-bolt be fixed in the base material hole; Stop the crab-bolt left and right displacement, continue nut is screwed in the screw flight section, make the expanding ring of autotomying stoped by two-way expansion assembly; Second intumescent sheet of expanding ring autotomyed cooperates with sphenocephaly and receives to squeeze generation and fully autotomy at the bottom of the base material hole, second intumescent sheet to around the distending of autotomying, hold on to the inwall in base material hole once more; The crab-bolt bearing capacity promotes, and reaches plug-in thing is fixed on architectural purpose.
The utility model is progressively realized once expansion, reexpansion and afterburning the expansion because two-way expansion assembly is arranged and autotomy expanding ring, makes from shear force and improves greatly, so, good fixing effect.And the utility model is compared with background technique one has only increased two-way expansion assembly, but compares the number that has significantly reduced expansion piece with background technique two, so on the whole, the utility model member is few, and is simple in structure.In addition, the expansion piece of two-way expansion assembly mainly is to be used for against the expanding ring of autotomying, so less demanding to the rigidity of material; Can select for use some to be prone to processing, material that cost is low, as adopting the allumen die cast, the expanding ring of autotomying mainly is to be used for producing expansive force in the base material hole; So select for use than expansion piece intensity better material; Because expansion piece expands in base material fully, the material of comparing existing expansion piece use still less, cost obtains saving.
Description of drawings
Fig. 1 is the structural representation of traditional architecture crab-bolt;
Fig. 1-the 1st, the scheme of installation of traditional architecture crab-bolt;
Fig. 2 is the structural representation of existing building crab-bolt;
Fig. 3 is the plane structure chart of the utility model;
Fig. 4 is the three-dimensional structure diagram one of the utility model;
Fig. 5 is the three-dimensional structure diagram two of the utility model;
Fig. 6 is the decomposing schematic representation of the utility model;
Fig. 7 is the mounting type schematic representation of the utility model;
Fig. 8 is the fastening means schematic representation of the utility model;
Fig. 9 is the once expansion schematic representation of the utility model;
Figure 10 is the reexpansion schematic representation of the utility model;
Figure 11 is the reinforcing expansion schematic representation of the utility model.
Embodiment
To shown in Figure 6, is the preferred embodiment of the utility model like Fig. 3, and a kind of composite expanded crab-bolt is made up of nut 1, screw rod 2, intermediate casing 3, autotomy expanding ring 4 and two-way expansion assembly.
The outer end of screw rod 2 has thread section 21 and the inner end has sphenocephaly 22.
The expanding ring 4 of autotomying is nested with on screw rod 2, and the corresponding sphenocephaly 22 in inner end forms second intumescent sheet 41.For second intumescent sheet 41 is expanded better, second intumescent sheet, 41 outer surfaces form groove 42.
Two-way expansion assembly is made up of two expansion pieces 5 and 6; Two expansion pieces 5 and 6 are nested with on screw rod 2; Two expansion pieces 5 and 6 opposite end all form several alternate first intumescent sheet 51,61 and sphenoid surface 52,62; And first intumescent sheet 51 of an expansion piece 5 is over against the sphenoid surface 62 of another expansion piece 6, and first intumescent sheet 61 of another expansion piece 6 is over against the sphenoid surface 52 of an expansion piece 5.In order to increase friction, the utility model is combined with the base material hole better, first intumescent sheet 51 and 61 outer surfaces form sawtooth 53 and 63.
The angle of the inclined-plane of sphenocephaly 22 and screw rod 2 central shafts is greater than the sphenoid surface 52,62 of expansion piece 5 and 6 and the angle of screw rod 2 central shafts.
When the utility model is installed, as shown in Figure 7, on base material, hole, the expansion piece 5,6 and the intermediate casing 3 of autotomy expanding ring 4, two-way expansion assembly is enclosed within on the screw rod 2; Sphenocephaly 22 with screw rod 2 is inserted in the pre-drilled base material hole inwardly again, and is then, as shown in Figure 8; Plug-in thing is hung on the screw rod 2, last, nut 1 is spun on the thread section 21 of screw rod 2; As shown in Figure 9, first intumescent sheet 51,61 of two-way expansion assembly cooperates with sphenoid surface 52,62 respectively to receive to squeeze and deforms prior to the expanding ring 4 of autotomying, first intumescent sheet 51,61 to around distending; Hold on to the inwall in base material hole, make whole crab-bolt be fixed in the base material hole, stop the crab-bolt left and right displacement; Shown in figure 10, continue nut 1 is screwed at the thread section 21 of screw rod 2, make the expanding ring 4 of autotomying stoped by the expansion piece 5 of two-way expansion assembly; Second intumescent sheet 41 of expanding ring 4 autotomyed cooperates with sphenocephaly 22 and receives to squeeze the generation base material bottom outlet of fully autotomying, second intumescent sheet 41 to around the distending of autotomying, shown in figure 11; Second intumescent sheet 41 holds on to the inwall in base material hole once more, and the crab-bolt bearing capacity promotes, and reaches plug-in thing is fixed on architectural purpose.
The embodiment that the above is merely the utility model is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection domain of this case.
Claims (4)
1. composite expanded crab-bolt is characterized in that: be made up of nut, screw rod, intermediate casing, autotomy expanding ring and two-way expansion assembly; The outer end of screw rod has thread section and the inner end has sphenocephaly; The expanding ring of autotomying is nested with on screw rod, and the corresponding sphenocephaly in inner end forms second intumescent sheet; Two-way expansion assembly is made up of two expansion pieces, and two expansion pieces are nested with on screw rod, and the opposite end of two expansion pieces all forms several alternate first intumescent sheet and sphenoid surface, and first intumescent sheet of an expansion piece is over against the sphenoid surface of another expansion piece; Intermediate casing is nested with on screw rod; The nut swivel nut is in the outer end of screw rod; The inclined-plane of sphenocephaly and the angle of screw stem are greater than the sphenoid surface of expansion piece and the angle of screw stem.
2. a kind of composite expanded crab-bolt as claimed in claim 1 is characterized in that: increase plain cushion and cushion between said intermediate casing and the nut.
3. a kind of composite expanded crab-bolt as claimed in claim 1 is characterized in that: the second intumescent sheet outer surface of the said expanding ring of autotomying forms groove.
4. a kind of composite expanded crab-bolt as claimed in claim 1 is characterized in that: the first intumescent sheet outer surface of said two-way expansion assembly forms sawtooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200709033U CN202500864U (en) | 2012-02-29 | 2012-02-29 | Composite expansion anchor bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200709033U CN202500864U (en) | 2012-02-29 | 2012-02-29 | Composite expansion anchor bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202500864U true CN202500864U (en) | 2012-10-24 |
Family
ID=47037479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200709033U Expired - Fee Related CN202500864U (en) | 2012-02-29 | 2012-02-29 | Composite expansion anchor bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202500864U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588407A (en) * | 2012-02-29 | 2012-07-18 | 福建鹏坤实业有限公司 | Composite expansion anchor bolt |
| WO2016019918A1 (en) * | 2014-08-08 | 2016-02-11 | 杨东佐 | Expansion connection structure and connection method, and expansion connection assembly |
-
2012
- 2012-02-29 CN CN2012200709033U patent/CN202500864U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588407A (en) * | 2012-02-29 | 2012-07-18 | 福建鹏坤实业有限公司 | Composite expansion anchor bolt |
| WO2016019918A1 (en) * | 2014-08-08 | 2016-02-11 | 杨东佐 | Expansion connection structure and connection method, and expansion connection assembly |
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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 |
Granted publication date: 20121024 Termination date: 20180229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |