CN204267473U - A kind of cement bolt - Google Patents
A kind of cement bolt Download PDFInfo
- Publication number
- CN204267473U CN204267473U CN201420739367.0U CN201420739367U CN204267473U CN 204267473 U CN204267473 U CN 204267473U CN 201420739367 U CN201420739367 U CN 201420739367U CN 204267473 U CN204267473 U CN 204267473U
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- CN
- China
- Prior art keywords
- thread
- bolt
- convex
- convex thread
- section
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- 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 kind of cement bolt, comprise bolt head, changeover portion, bolt shank, described bolt head, changeover portion, bolt shank connect from top to bottom successively, described bolt shank successively by locking section, thread section, chamfering section be formed by connecting; Described locking section is provided with the first convex thread and recessed screw thread, and thread section is provided with the second convex thread and recessed screw thread, and chamfering section is provided with the second convex thread and recessed screw thread; Described first convex thread is connected with the second convex thread spiral, and the tooth form angle between the first convex thread and bolt shank is less than the tooth form angle between the second convex thread and bolt shank, and the first convex thread, the second convex thread and recessed screw thread adjacent spaces arrange.The utility model screws in effective, not easily crooked, laborsaving during installation, can be locking further after installation, and recessed screw thread increases with the contact of cement tissue and is engaged, and not easily produces space, dismountablely reuses, and then improves the use value of bolt.
Description
[technical field]
The utility model relates to the technical field of the technical field of threaded fastener, particularly cement bolt.
[background technique]
Cement bolt is in order to be fixed on by object on structural material (as cement etc.), first can offer pre-drilled in the appropriate location in cement in use, then bolt shank enters in pre-drilled through pad, tightened by spanner, to reach the fixing effect of object, be generally used in the occasion such as lift-mounting, curtain wall.
Cement bolt can be used to alternative original EXPANSION ANCHOR BOLTS, EXPANSION ANCHOR BOLTS be fixedly utilize wedge shape gradient to impel expand produce friction grip force, reach fixed effect.But it is fixing very unreliable, it is swelling that taper end orders about expansion sleeve, and expansion effect only occurs in screw rod tail end, and namely whole EXPANSION ANCHOR BOLTS and mounting hole only define and to be connected, when EXPANSION ANCHOR BOLTS is subject to transverse force, easily there is phenomenon that is loosening or even Joint failure.
Existing cement bolt also also exists some problems, because thread spacing is comparatively large, can reach labor-saving effect, and screw in poor effect when locking concrete, the easy crooked generation of bolt is biased, causes wasting time and energy of construction, affects operating efficiency.Easily produce space between screw rod and cement, cause foreign matter, aqueous vapor enters among this gap, easily cause this cement bolt Accelerated corrosion, reduce working life.
[model utility content]
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of cement bolt, screws in effective, not easily crooked, can be locking further after installation, not easily produces space.
For achieving the above object, the utility model proposes a kind of cement bolt, comprise bolt head, changeover portion, bolt shank, described bolt head, changeover portion, bolt shank connect from top to bottom successively, described bolt shank successively by locking section, thread section, chamfering section be formed by connecting; Described locking section is provided with the first convex thread and recessed screw thread, and thread section is provided with the second convex thread and recessed screw thread, and chamfering section is provided with the second convex thread and recessed screw thread; Described first convex thread is connected with the second convex thread spiral, and the tooth form angle between the first convex thread and bolt shank is less than the tooth form angle between the second convex thread and bolt shank, and the first convex thread, the second convex thread and recessed screw thread adjacent spaces arrange.
As preferably, described locking section is provided with guiding groove with changeover portion joint, and the quantity of guiding groove is several, guiding groove Spiral distribution.
As preferably, the tooth end of described first convex thread is set to tiltedly outer, and tooth end is tilted to the direction of bolt head, the tooth form angle between the first convex thread and bolt shank 30 °.
As preferably, the tooth form angle between described second convex thread and bolt shank is 60 °.
As preferably, described bolt head is hexagon head bolt head, and the end face that bolt head is connected with changeover portion is flanged surface, with rib tooth on flanged surface, and rib tooth circle distribution.
The beneficial effects of the utility model: the utility model screws in effective, not easily crooked, laborsaving during installation, can be locking further after installation, recessed screw thread increases with the contact of cement tissue and is engaged, and not easily produces space, dismountablely to reuse, and then improve the use value of bolt.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the structural representation of a kind of cement bolt of the utility model;
Fig. 2 is the close-up schematic view of a kind of cement bolt of the utility model;
Fig. 3 is the schematic diagram of another angle of a kind of cement bolt of the utility model.
In figure: 1-bolt head, 11-flanged surface, 111-rib tooth, 2-changeover portion, 3-bolt shank, locking section of 4-, 41-first convex thread, 42-guiding groove, 5-thread section, 51-second convex thread, the recessed screw thread of 52-, 6-chamfering section.
[embodiment]
Consult Fig. 1, Fig. 2 and Fig. 3, the utility model, comprise bolt head 1, changeover portion 2, bolt shank 3, described bolt head 1, changeover portion 2, bolt shank 3 connect from top to bottom successively, described bolt shank 3 successively by locking section 4, thread section 5, chamfering section 6 be formed by connecting; Described locking section 4 is provided with the first convex thread 41 and recessed screw thread 52, and thread section 5 is provided with the second convex thread 51 and recessed screw thread 52, and chamfering section 6 is provided with the second convex thread 51 and recessed screw thread 52; Described first convex thread 41 is connected with the second convex thread 51 spiral, tooth form angle between first convex thread 41 and bolt shank 3 is less than the tooth form angle between the second convex thread 51 and bolt shank 3, and the first convex thread 41, second convex thread 51 arranges with recessed screw thread 52 adjacent spaces.Described locking section 4 is provided with guiding groove 42 with changeover portion 2 joint, and the quantity of guiding groove 42 is several, guiding groove 42 Spiral distribution.The tooth end of described first convex thread 41 is set to tiltedly outer, and tooth end is tilted to the direction of bolt head 1, the tooth form angle between the first convex thread 41 and bolt shank 3 30 °.Tooth form angle between described second convex thread 51 and bolt shank 3 is 60 °.Described bolt head 1 is hexagon head bolt head, and the end face that bolt head 1 is connected with changeover portion 2 is flanged surface 11, with rib tooth 111 on flanged surface 11, and rib tooth 111 circle distribution.
Utility model works process:
A kind of cement bolt of the utility model in the course of the work, cement first offers pre-drilled, then bolt shank 3 is entered in pre-drilled through pad, make bolt lock concrete, the second convex thread 51 first contacts cement, and the tooth form angle of the second convex thread 51 is beneficial to more greatly cutting cement, it is made to be easy to screw in cement, the tooth form angle of the first convex thread 41 is less, and locking cement tissue, prevents bolt from outwards deviating from again; During installation, the powder of cement can be expressed in the space of recessed screw thread 52, increase with the contact of cement tissue and be engaged, this guiding groove 42 then can form the effect of guiding and balance, and then make construction more easy, laborsaving, can be locking further at bolt head place with 111, rib tooth on the flanged surface 11 of bolt head 1.
The utility model screws in effective, not easily crooked, laborsaving during installation, can be locking further after installation, and recessed screw thread 52 increases with the contact of cement tissue and is engaged, and not easily produces space, dismountablely reuses, and then improves the use value of bolt.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, anyly all belongs to protection domain of the present utility model to the scheme after the utility model simple transformation.
Claims (5)
1. a cement bolt, it is characterized in that: comprise bolt head (1), changeover portion (2), bolt shank (3), described bolt head (1), changeover portion (2), bolt shank (3) connect from top to bottom successively, and described bolt shank (3) is formed by connecting by locking section (4), thread section (5), chamfering section (6) successively; Described locking section (4) are provided with the first convex thread (41) and recessed screw thread (52), thread section (5) is provided with the second convex thread (51) and recessed screw thread (52), and chamfering section (6) is provided with the second convex thread (51) and recessed screw thread (52); Described first convex thread (41) is connected with the second convex thread (51) spiral, tooth form angle between first convex thread (41) and bolt shank (3) is less than the tooth form angle between the second convex thread (51) and bolt shank (3), and the first convex thread (41), the second convex thread (51) and recessed screw thread (52) adjacent spaces arrange.
2. a kind of cement bolt as claimed in claim 1, it is characterized in that: described locking section (4) and changeover portion (2) joint are provided with guiding groove (42), the quantity of guiding groove (42) is several, guiding groove (42) Spiral distribution.
3. a kind of cement bolt as claimed in claim 1, it is characterized in that: the tooth end of described first convex thread (41) is set to tiltedly outer, tooth end is tilted to the direction of bolt head (1), the tooth form angle between the first convex thread (41) and bolt shank (3) 30 °.
4. a kind of cement bolt as claimed in claim 1, is characterized in that: the tooth form angle between described second convex thread (51) and bolt shank (3) is 60 °.
5. a kind of cement bolt as claimed in claim 1, it is characterized in that: described bolt head (1) is hexagon head bolt head, the end face that bolt head (1) is connected with changeover portion (2) is flanged surface (11), with rib tooth (111) on flanged surface (11), rib tooth (111) circle distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420739367.0U CN204267473U (en) | 2014-11-30 | 2014-11-30 | A kind of cement bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420739367.0U CN204267473U (en) | 2014-11-30 | 2014-11-30 | A kind of cement bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204267473U true CN204267473U (en) | 2015-04-15 |
Family
ID=52802344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420739367.0U Expired - Fee Related CN204267473U (en) | 2014-11-30 | 2014-11-30 | A kind of cement bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204267473U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202057A (en) * | 2017-06-16 | 2017-09-26 | 航天精工股份有限公司 | A kind of pair of countersunk head blind riveting pumping nail |
| CN109236831A (en) * | 2018-10-23 | 2019-01-18 | 航天精工股份有限公司 | A kind of bolt and its transition structure with transition region |
-
2014
- 2014-11-30 CN CN201420739367.0U patent/CN204267473U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202057A (en) * | 2017-06-16 | 2017-09-26 | 航天精工股份有限公司 | A kind of pair of countersunk head blind riveting pumping nail |
| CN109236831A (en) * | 2018-10-23 | 2019-01-18 | 航天精工股份有限公司 | A kind of bolt and its transition structure with transition region |
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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: 20150415 Termination date: 20151130 |
|
| EXPY | Termination of patent right or utility model |