CN201502598U - Light expanding anchor bolt - Google Patents
Light expanding anchor bolt Download PDFInfo
- Publication number
- CN201502598U CN201502598U CN2009201962520U CN200920196252U CN201502598U CN 201502598 U CN201502598 U CN 201502598U CN 2009201962520 U CN2009201962520 U CN 2009201962520U CN 200920196252 U CN200920196252 U CN 200920196252U CN 201502598 U CN201502598 U CN 201502598U
- Authority
- CN
- China
- Prior art keywords
- expanding
- light
- circular groove
- anchor bolt
- sleeve pipe
- 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 relates to an expanding anchor bolt, in particular to a light expanding anchor bolt, which comprises a screw rod and a sleeve. One end of the screw rod is provided with a nut, while the other end thereof is provided with an expanding head. The sleeve is sleeved on a rod body between the nut and the expanding head. One end of the sleeve is provided with an expanding component. The expanding component is right opposite to the expanding head. The axial direction of the expanding component is provided with a plurality of gaps. A plurality of gaps divide the expanding component into a plurality of expanding claws. An outer ring on the root parts of the expanding claws is provided with a circumferential annular groove. When the light expanding anchor bolt is in use, the expanding claws expand on the root parts simultaneously and the expanded angles of the expanding claws are the same. And the light expanding anchor bolt is provided with the annular groove, thus, when the expanding claws expand, the root parts of the expanding claws are bent without forming folds so as to avoid damage to the materials. The utility model has the characteristics of simple structure, firm anchorage and convenient use.
Description
Technical field
The utility model relates to a kind of reaming type crab-bolt.
Background technique
Existing reaming type crab-bolt structure is more, generally comprises screw rod and sleeve pipe, and an end of screw rod is provided with nut, and the other end is provided with extension header, and casing pipe sleeve is located on the body of rod between nut and the extension header, and an end of sleeve pipe is an extension member, and extension member is over against extension header; Extension member axially is provided with many slits, and many slits are divided into a plurality of expansion pawls with extension member.By squeezing bushing, the expansion pawl is strutted under prolate-headed effect when using, the mounting hole in expansion pawl and concrete interlock is mutually realized anchor.Expansion pawl and sleeve pipe joint were bent to form fold when the expansion pawl strutted, and can cause the strain of material; Simultaneously, also need bigger active force that the expansion pawl is strutted.In addition, the kink that the expansion pawl struts can be to form at random, and interlock is inhomogeneous mutually with mounting hole to cause each expansion pawl like this, is unfavorable for being anchored.
Summary of the invention
In order to solve the above technological deficiency that existing reaming type crab-bolt exists, the purpose of this utility model provides a kind of light-duty reaming type crab-bolt, and this crab-bolt has simple in structure, is anchored firmly characteristics easy to use.
In order to realize above-mentioned purpose, the utility model has adopted following technological scheme:
A kind of light-duty reaming type crab-bolt, this crab-bolt comprises screw rod and sleeve pipe, and an end of screw rod is provided with nut, and the other end is provided with extension header, and casing pipe sleeve is located on the body of rod between nut and the extension header, and an end of sleeve pipe is an extension member, and extension member is over against extension header; Extension member axially is provided with many slits, and many slits are divided into a plurality of expansion pawls with extension member, is provided with circumferential circular groove in root (promptly expanding the joint of pawl and the sleeve body) outer ring of expansion pawl.
As preferably, the axial length of above-mentioned circular groove is 2～5mm, and radial depth is 0.1～0.5 of a casing wall thickness size.Adopt above-mentioned technological scheme, the angle that the expansion pawl is strutted can not form fold between 30 °～45 °, and the angle that struts of expansion pawl between 30 °～45 ° the time expansion pawl have snap-in force preferably with mounting hole in the concrete, the while can not cause the strain of material again.
As preferably, the inner in slit extends into circular groove, and the gap length that enters circular groove is 0.25～0.75 of a circular groove axial length.
As preferably, described slit is four or six.
The utility model has been owing to adopted above technological scheme, and pawl is same struts at root in expansion in the time of use, and the angle that struts is same; Simultaneously, the utlity model has circular groove, the root bending of expansion pawl can not form fold when the expansion pawl strutted, and had avoided the strain of material; The utlity model has simple in structurely, be anchored firmly characteristics easy to use.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is made a detailed explanation.
A kind of light-duty reaming type crab-bolt as shown in Figure 1, this crab-bolt comprises screw rod 1 and sleeve pipe 4, one end of screw rod 1 is provided with nut 2 and pad 3, the other end is provided with extension header 6, extension header 6 is provided with conical surface, nut 2 is arranged on the outer end of pad 3, and sleeve pipe 4 is set on the body of rod between pad 3 and the extension header 6.One end of sleeve pipe 4 is an extension member, and extension member is over against extension header 6, and extension member axially is provided with 5, six slits 5, six slits extension member is divided into six expansion pawls 8.The outer ring of promptly expanding the joint of pawl and sleeve pipe 4 bodies at expansion pawl 8 roots is provided with circumferential circular groove 7, and the axial length of circular groove 7 is 4mm, and radial depth is 0.25 of sleeve pipe 4 wall thickness dimensions.The inner in slit 5 extends into circular groove 7, and the gap length that enters circular groove 7 is 0.5 of circular groove 7 axial lengths.
Claims (4)
1. light-duty reaming type crab-bolt, this crab-bolt comprises screw rod (1) and sleeve pipe (4), one end of screw rod (1) is provided with nut (2), the other end is provided with extension header (6), sleeve pipe (4) is set on the body of rod between nut (2) and the extension header (6), it is characterized in that: an end of sleeve pipe (4) is an extension member, and extension member is over against extension header (6); Extension member axially is provided with many slits (5), and many slits (5) are divided into a plurality of expansion pawls (8) with extension member, and the root outer ring of expansion pawl (8) is provided with circumferential circular groove (7).
2. a kind of light-duty reaming type crab-bolt according to claim 1, it is characterized in that: the axial length of circular groove (7) is 2～5mm, radial depth is 0.1～0.5 of sleeve pipe (a 4) wall thickness dimension.
3. a kind of light-duty reaming type crab-bolt according to claim 1 and 2, it is characterized in that: the inner of slit (5) extends into circular groove (7), and the gap length that enters circular groove (7) is 0.25～0.75 of circular groove (a 7) axial length.
4. a kind of light-duty reaming type crab-bolt according to claim 1 and 2 is characterized in that: described slit (5) are four or six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201962520U CN201502598U (en) | 2009-09-17 | 2009-09-17 | Light expanding anchor bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201962520U CN201502598U (en) | 2009-09-17 | 2009-09-17 | Light expanding anchor bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201502598U true CN201502598U (en) | 2010-06-09 |
Family
ID=42453531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201962520U Expired - Fee Related CN201502598U (en) | 2009-09-17 | 2009-09-17 | Light expanding anchor bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201502598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111316004A (en) * | 2017-12-18 | 2020-06-19 | 喜利得股份公司 | Expansion anchor with adapted annular groove on expansion sleeve |
| CN111316003A (en) * | 2017-12-18 | 2020-06-19 | 喜利得股份公司 | Expansion anchor with wide annular groove on expansion sleeve |
-
2009
- 2009-09-17 CN CN2009201962520U patent/CN201502598U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111316004A (en) * | 2017-12-18 | 2020-06-19 | 喜利得股份公司 | Expansion anchor with adapted annular groove on expansion sleeve |
| CN111316003A (en) * | 2017-12-18 | 2020-06-19 | 喜利得股份公司 | Expansion anchor with wide annular groove on expansion sleeve |
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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: 20100609 Termination date: 20140917 |
|
| EXPY | Termination of patent right or utility model |