CN203796697U - Self-undercut mechanical anchor bolt - Google Patents
Self-undercut mechanical anchor bolt Download PDFInfo
- Publication number
- CN203796697U CN203796697U CN201420185952.0U CN201420185952U CN203796697U CN 203796697 U CN203796697 U CN 203796697U CN 201420185952 U CN201420185952 U CN 201420185952U CN 203796697 U CN203796697 U CN 203796697U
- Authority
- CN
- China
- Prior art keywords
- sleeve body
- expansion
- mechanical anchor
- screw rod
- anchor 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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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a self-undercut mechanical anchor bolt. The self-undercut mechanical anchor bolt comprises a screw rod and an expansion piece assembly, wherein the screw rod extends into the expansion piece assembly; a spacer and a nut are successively arranged at the head end of the screw rod; the expansion piece assembly comprises a first sleeve body and a second sleeve body; an expansion part is arranged at the tail end of the first sleeve body; multi-expansion layers are arranged at the expansion part; a plurality of expansion pieces are arranged at the head part of the first sleeve body, and inner rings at the end parts of the expansion pieces are provided with trumpet-shaped openings; the second sleeve body is cylindrical, and a chamfering is formed at the joint of the first sleeve body and the second sleeve body and is matched with the trumpet-shaped openings of the first sleeve body. When the mechanical anchor bolt is inflated, the mechanical anchor bolt more firmly presses the side wall of a drilled hole, and the upward displacement and downward displacement are both limited and locked, so that the tensile strength and the shear resistant are greater.
Description
Technical field
The utility model relates to the one end mechanical anchor of autotomying.
Background technique
Mechanical anchor plays an important role in industrial production engineering, by in use, first need punching, then crab-bolt is knocked in hole, utilize moving in opposite directions of screw rod and intumescent sheet, impel intumescent sheet to expand, produce the swelling pressure with hole wall concrete, and produce withdrawal resistance by shearing friction effect, realize the anchoring to link.
This type of crab-bolt in use, when running into after too dark that staff beats hole, after expanding in crab-bolt is knocked in hole, if misoperation, again knock, can cause crab-bolt again toward mobile in hole, and crab-bolt is moved on cannot be again after expansion, the easy like this product rejection that makes, and waste of manpower, financial resources.
Summary of the invention
After borehole sidewall being pushed when technical problem to be solved in the utility model is to provide a kind of expansion, the mechanical anchor that upper and lower displacement all cannot produce.
For solving the problems of the technologies described above, the autotomy technical solution of end mechanical anchor of the utility model is:
The end mechanical anchor of autotomying, comprises screw rod, expansion piece assembly, and screw rod stretches in expansion assembly, and screw rod head end is provided with pad, nut successively, it is characterized in that: described expansion assembly comprises the first body and the second body; The afterbody of described the first body is provided with bulge, and bulge is provided with repeatedly expanding layer; Be provided with multiple intumescent sheets in the first body stem, in the end of intumescent sheet, inner ring is horn-like opening; Described the second body is tubular, is provided with chamfering with the junction of the first body, and the horn-like opening of described chamfering and the first body matches.
The intumescent sheet of described the first body stem is four.
The bulge of described the first body afterbody is made up of at least two expanding layer with cone angle.
The technique effect that the utility model can reach is:
Mechanical anchor of the present utility model, body adopts merogenesis structure, and the bulge of the first body is located at tail end, and intumescent sheet is located at stem, be reverse design compared to bulge, in crab-bolt prepackage shot borehole after, screw nut, bulge expands, and the top offset of crab-bolt is locked, then continue nutting, make the second body continue to press down, the intumescent sheet of the first body is expanded, the bottom offset of crab-bolt is also locked, whole crab-bolt is just squeezed in boring firmly, and the intensity of whole carrying is larger.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model mechanical anchor;
Fig. 2 is the three-dimensional exploded view of the utility model mechanical anchor.
Embodiment
As shown in Figure 1 and Figure 2, the utility model provides the end mechanical anchor of autotomying, comprise screw rod (1), expansion piece assembly, screw rod (1) stretches in expansion assembly, screw rod (1) head end is provided with pad (3), nut (2) successively, and described expansion assembly comprises the first body (4) and the second body (5); The afterbody of described the first body (4) is provided with bulge (6), and bulge (6) is provided with repeatedly expanding layer; Be provided with multiple intumescent sheets (7) in the first body (4) stem, be horn-like opening (8) at the end inner ring of intumescent sheet (7); Described the second body (5) is tubular, is provided with chamfering (9) with the junction of the first body (4), and described chamfering (9) matches with the horn-like opening (8) of the first body (4).
The intumescent sheet (8) of described the first body (5) stem is four.
The bulge (7) of described the first body (4) afterbody is made up of at least two expanding layer with cone angle.
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, ensured that each assembly is not loosening, then insert in the hole of accomplishing fluently; Then, with torque spanner, crab-bolt nut (2) is tightened, now, the bulge (7) of the first body (4) starts the anchoring of expanding, and has limited the superior displacement of crab-bolt; Continue to screw nut (2), the second body (5) continues to move down, because the bottom of the second body (5) is chamfering (9), and the horn-like opening (8) that is embedded in the first body (4) stem is located, along with pressing down of the second body (5), the intumescent sheet (7) of the first body (4) stem starts the anchoring of expanding, limit the lower displacement of crab-bolt, finally, unclamp the nut (2) in crab-bolt, will install by fixing coupling, with torque spanner fastening nut (2).
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 (3)
1. the end mechanical anchor of autotomying, comprises screw rod, expansion piece assembly, and screw rod stretches in expansion assembly, and screw rod head end is provided with pad, nut successively, it is characterized in that: described expansion assembly comprises the first body and the second body; The afterbody of described the first body is provided with bulge, and bulge is provided with repeatedly expanding layer; Be provided with multiple intumescent sheets in the first body stem, in the end of intumescent sheet, inner ring is horn-like opening; Described the second body is tubular, is provided with chamfering with the junction of the first body, and the horn-like opening of described chamfering and the first body matches.
2. the end mechanical anchor of autotomying according to claim 1, is characterized in that: the intumescent sheet of described the first body stem is four.
3. the end mechanical anchor of autotomying according to claim 1, is characterized in that: the bulge of described the first body afterbody is made up of at least two expanding layer with cone angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185952.0U CN203796697U (en) | 2014-04-17 | 2014-04-17 | Self-undercut mechanical anchor bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185952.0U CN203796697U (en) | 2014-04-17 | 2014-04-17 | Self-undercut mechanical anchor bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796697U true CN203796697U (en) | 2014-08-27 |
Family
ID=51378911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420185952.0U Expired - Fee Related CN203796697U (en) | 2014-04-17 | 2014-04-17 | Self-undercut mechanical anchor bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796697U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864253A (en) * | 2016-06-07 | 2016-08-17 | 杭州斯泰新材料技术有限公司 | Punching and chamfering synchronous double-reaming anchor bolt and mounting structure on concrete |
| CN105864252A (en) * | 2016-06-07 | 2016-08-17 | 杭州斯泰新材料技术有限公司 | Lock type anchor bolt and installation structure on concrete |
-
2014
- 2014-04-17 CN CN201420185952.0U patent/CN203796697U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864253A (en) * | 2016-06-07 | 2016-08-17 | 杭州斯泰新材料技术有限公司 | Punching and chamfering synchronous double-reaming anchor bolt and mounting structure on concrete |
| CN105864252A (en) * | 2016-06-07 | 2016-08-17 | 杭州斯泰新材料技术有限公司 | Lock type anchor bolt and installation structure on concrete |
| CN105864252B (en) * | 2016-06-07 | 2019-02-05 | 杭州斯泰新材料技术有限公司 | A kind of locking-type anchor bolt and the mounting structure on concrete |
| CN105864253B (en) * | 2016-06-07 | 2019-02-05 | 杭州斯泰新材料技术有限公司 | A kind of dig synchronizes double expansion formula anchor bolts and the mounting structure on concrete |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20190417 |