CN207195404U - A kind of modified form cement bolt - Google Patents
A kind of modified form cement bolt Download PDFInfo
- Publication number
- CN207195404U CN207195404U CN201721079661.3U CN201721079661U CN207195404U CN 207195404 U CN207195404 U CN 207195404U CN 201721079661 U CN201721079661 U CN 201721079661U CN 207195404 U CN207195404 U CN 207195404U
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- CN
- China
- Prior art keywords
- screw thread
- screw
- modified form
- cross
- section
- 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 kind of modified form cement bolt,Including nut,Screw rod and screw thread,The rear end of the screw rod is provided with nut,The screw rod is provided with screw thread,The screw thread is made up of cutting guiding screw thread with the regular screw threads for being located at cutting guiding screw thread rear,The screw rod is provided with to interlock spaced low pitch thread with regular screw threads,The cross section of the low pitch thread is isosceles-trapezium-shaped,Integrally formed with arc convex on former and later two facings of the regular screw threads,The cutting guiding screw thread is arranged to make up by some evenly spaced curls of tooth body,The tooth body structure change is is that the cross section that the tooth body of isosceles trapezoid is gradually varied to rearmost end is the tooth body of isosceles triangle from the cross section of front end,The stringcourse of two adjacent tooth bodies overlaps,Compared with prior art,Operation can quickly and easily be screwed in,Improve locking effect,Improve anti-loosing effect,It is less prone to bolt deflection.
Description
【Technical field】
A kind of technical field of bolt is the utility model is related to, particularly a kind of technical field of modified form cement bolt.
【Background technology】
Cement bolt be object is fixed on construction material (such as cement), when in use first can be in cement
Appropriate location opens up prebored hole, and then shank of bolt enters in prebored hole through pad, is tightened by spanner, is consolidated object with reaching
Fixed effect, it is generally used in the occasions such as installation elevator, curtain wall.
It is typically for being locked on the cement bolt of concrete, due to being only provided with spiral helicine thread in bolt body, therefore, when
For bolt when concrete is locked, screw-in is ineffective, causes wasting time and energy for construction, influences operating efficiency, and locking effect
Difference.
【Utility model content】
The purpose of this utility model is exactly to solve the problems of the prior art, proposes a kind of modified form cement bolt, can
Operation is quickly and easily screwed in, and improves locking effect.
To achieve the above object, the utility model proposes a kind of modified form cement bolt, including nut, screw rod and spiral shell
Line, the rear end of the screw rod are provided with nut, and the screw rod is provided with screw thread, and the screw thread is by cutting guiding screw thread and is located at cutting
The regular screw threads at screw thread rear are guided to form, the screw rod is provided with to interlock spaced low pitch thread with regular screw threads, institute
The cross section for stating low pitch thread is isosceles-trapezium-shaped, integrally formed with arc on former and later two facings of the regular screw threads
Projection, the cutting guiding screw thread are arranged to make up by some evenly spaced curls of tooth body, and the tooth body structure change is
Be from the cross section of front end isosceles trapezoid tooth body be gradually varied to rearmost end cross section be isosceles triangle tooth body, institute
The stringcourse for stating two adjacent tooth bodies overlaps.
Preferably, the diameter of the low pitch thread is equal with the diameter for the mounting hole that the cement bolt is engaged.
Preferably, the height of the arc convex is 0.5~1 millimeter.
Preferably, the front end of the screw rod is provided with lean preventing portion, the lean preventing portion is engaged with the cement bolt
The diameter of mounting hole is equal.
Preferably, the cross section of the regular screw threads and the cross section of tooth body of rearmost end coincide.
Preferably, set between the front end of the nut and screw rod integrally formed with compressed part, the front end of the compressed part
There are the anti-slop serrations of circumferentially shape distribution.
Preferably, the cross section of the nut is regular hexagon shape, the side face of the nut is provided with circular groove
With the groove being engaged with flat mouth screwdriver head.
Preferably, the angle number of degrees between the stringcourse of the tooth body and base are 40~50 degree.
The beneficial effects of the utility model：Screw thread of the present utility model is by cutting guiding screw thread and is located at cutting guiding screw thread
The regular screw threads at rear are formed, and cutting guiding screw thread is arranged to make up by some evenly spaced curls of tooth body, tooth body structure
It is isosceles triangle that change, which is turned to from the cross section of front end as the cross section that the tooth body of isosceles trapezoid is gradually varied to rearmost end,
Tooth body, the stringcourse of adjacent two tooth bodies overlap, and can quickly and easily screw in operation；On former and later two facings of regular screw threads
Integrally formed with arc convex, by increasing capacitance it is possible to increase frictional force；Screw rod is provided with to interlock spaced low tooth spiral shell with regular screw threads
Line so that brill is aerial for concrete chip more closely knit being aggregated under cutting, and can improve the fixation reliability of bolt；With existing skill
Art is compared, and can quickly and easily screw in operation, improves locking effect, is improved anti-loosing effect, is less prone to bolt deflection.
Feature and advantage of the present utility model will be described in detail by embodiment combination accompanying drawing.
【Brief description of the drawings】
Fig. 1 is a kind of structural representation of modified form cement bolt of the utility model；
Fig. 2 is the change schematic diagram of tooth body；
Fig. 3 is Fig. 2 front view.
In figure：1- nuts, 2- screw rods, 3- screw threads, the low pitch threads of 4-, 5- grooves, 6- circular grooves, 31- teeth body, 32- are general
Logical screw thread, 33- arc convex, 11- compressed parts, 12- anti-slop serrations, 21- lean preventing portion.
【Embodiment】
Refering to Fig. 1, Fig. 2 and Fig. 3, a kind of modified form cement bolt of the utility model, including nut 1, screw rod 2 and screw thread 3,
The rear end of the screw rod 2 is provided with nut 1, and the screw rod 2 is provided with screw thread 3, and the screw thread 3 is guided screw thread and be located at and cut by cutting
The regular screw threads 32 for cutting guiding screw thread rear are formed, and the screw rod 2 is provided with to interlock spaced low tooth with regular screw threads 32
Screw thread 4, the cross section of the low pitch thread 4 are isosceles-trapezium-shaped, homogeneous on former and later two facings of the regular screw threads 32
Body formed to have arc convex 33, the cutting guiding screw thread is arranged to make up by some 31 evenly spaced curls of tooth body, institute
The structure change of tooth body 31 is stated to be that the tooth body 31 of isosceles trapezoid is gradually varied to the cross section of rearmost end from the cross section of front end
For the tooth body 31 of isosceles triangle, the stringcourse of two adjacent tooth bodies 31 overlaps, diameter and the water of the low pitch thread 4
The diameter for the mounting hole that mud snail bolt is engaged is equal, and the height of the arc convex 33 is 0.5~1 millimeter, before the screw rod 2
End is provided with lean preventing portion 21, and the lean preventing portion 21 is equal with the diameter for the mounting hole that the cement bolt is engaged, described common
The cross section of screw thread 32 and the cross section of the tooth body 31 of rearmost end coincide, and are integrally formed between the front end of the nut 1 and screw rod 2
There is compressed part 11, the front end of the compressed part 11 is provided with the anti-slop serrations 12 of circumferentially shape distribution, and the cross section of the nut 1 is just
Hexagonal shape, the side face of the nut 1 are provided with circular groove 6 and the groove 5 being engaged with flat mouth screwdriver head, the tooth body
The angle number of degrees between 31 stringcourse and base are 40~50 degree.
Utility model works process：
In the course of the work, screw thread 3 is guided screw thread and is located at and cut a kind of modified form cement bolt of the utility model by cutting
The regular screw threads 32 for cutting guiding screw thread rear are formed, and cutting guiding screw thread is arranged by some 31 evenly spaced curls of tooth body
Form, the structure change of tooth body 31 is is that the tooth body 31 of isosceles trapezoid is gradually varied to the transversal of rearmost end from the cross section of front end
Face is the tooth body 31 of isosceles triangle, and the stringcourse of adjacent two tooth bodies 31 overlaps, by tooth body 32 to the mounting hole of preboring
Hole wall carries out progressively cutting and ultimately forms internal thread of the cross section for isosceles triangle, and is less likely to be damaged body of cement, anti-dumping
It is crooked that inclined portion 21 prevents that bolt from occurring when locking, integrally formed with arc convex on former and later two facings of regular screw threads 32
33, by increasing capacitance it is possible to increase frictional force；Screw rod 2 be provided with regular screw threads 32 interlock spaced low pitch thread 4 so that under cutting
Brill is aerial for more closely knit being aggregated in of concrete chip, can improve the fixation reliability of bolt；Compared with prior art, can be light
Operation is efficiently screwed in, improves locking effect, anti-loosing effect is improved, is less prone to bolt deflection.
Above-described embodiment be to explanation of the present utility model, be not to restriction of the present utility model, it is any new to this practicality
Scheme after type simple transformation belongs to the scope of protection of the utility model.
Claims (8)
- A kind of 1. modified form cement bolt, it is characterised in that：Including nut (1), screw rod (2) and screw thread (3), the screw rod (2) Rear end be provided with nut (1), the screw rod (2) is provided with screw thread (3), and the screw thread (3) is cut by cutting guiding screw thread and being located at The regular screw threads (32) for cutting guiding screw thread rear are formed, and the screw rod (2) is provided with staggeredly to be arranged at intervals with regular screw threads (32) Low pitch thread (4), the cross section of the low pitch thread (4) is isosceles-trapezium-shaped, front and rear the two of the regular screw threads (32) It is evenly spaced into spiral shell by some tooth bodies (31) integrally formed with arc convex (33), the cutting guiding screw thread on individual facing Rotation shape is arranged to make up, tooth body (31) the gradually change that it is isosceles trapezoid from the cross section of front end that tooth body (31) structure change, which is, The cross section for turning to rearmost end is the tooth body (31) of isosceles triangle, and the stringcourse of two adjacent tooth bodies (31) overlaps.
- A kind of 2. modified form cement bolt as claimed in claim 1, it is characterised in that：The diameter of the low pitch thread (4) with The diameter for the mounting hole that the cement bolt is engaged is equal.
- A kind of 3. modified form cement bolt as claimed in claim 1, it is characterised in that：The height of the arc convex (33) is 0.5~1 millimeter.
- A kind of 4. modified form cement bolt as claimed in claim 1, it is characterised in that：The front end of the screw rod (2) is provided with anti- Rake (21), the lean preventing portion (21) are equal with the diameter for the mounting hole that the cement bolt is engaged.
- A kind of 5. modified form cement bolt as claimed in claim 1, it is characterised in that：The cross section of the regular screw threads (32) It is coincide with the cross section of the tooth body (31) of rearmost end.
- A kind of 6. modified form cement bolt as claimed in claim 1, it is characterised in that：The front end of the nut (1) and screw rod (2) integrally formed with compressed part (11) between, the front end of the compressed part (11) is provided with the anti-slop serrations (12) of circumferentially shape distribution.
- A kind of 7. modified form cement bolt as claimed in claim 1, it is characterised in that：The cross section of the nut (1) is just Hexagonal shape, the side face of the nut (1) are provided with circular groove (6) and the groove (5) being engaged with flat mouth screwdriver head.
- A kind of 8. modified form cement bolt as any one of claim 1 to 7, it is characterised in that：The tooth body (31) Stringcourse and base between the angle number of degrees be 40~50 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721079661.3U CN207195404U (en) | 2017-08-28 | 2017-08-28 | A kind of modified form cement bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721079661.3U CN207195404U (en) | 2017-08-28 | 2017-08-28 | A kind of modified form cement bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207195404U true CN207195404U (en) | 2018-04-06 |
Family
ID=61795535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721079661.3U Expired - Fee Related CN207195404U (en) | 2017-08-28 | 2017-08-28 | A kind of modified form cement bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207195404U (en) |
-
2017
- 2017-08-28 CN CN201721079661.3U patent/CN207195404U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180406 Termination date: 20190828 |