CN205478787U - Bimetal self tapping cement crab -bolt - Google Patents
Bimetal self tapping cement crab -bolt Download PDFInfo
- Publication number
- CN205478787U CN205478787U CN201620064153.7U CN201620064153U CN205478787U CN 205478787 U CN205478787 U CN 205478787U CN 201620064153 U CN201620064153 U CN 201620064153U CN 205478787 U CN205478787 U CN 205478787U
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- Prior art keywords
- head
- crab
- bolt
- self tapping
- screw thread
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- Expired - Fee Related
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Abstract
The utility model discloses a bimetal self tapping cement crab -bolt, it had both had the intensity that enough pierces through cement, had corrosion resistance again, and two kinds of performances have, then can prolong the life -span of the building that links together with above -mentioned self tapping cement crab -bolt. This bimetal self tapping cement crab -bolt includes the head to and the pole portion that is connected with the head, being equipped with the screw thread of self tapping type in pole portion, pole portion has head end and tail end, and the tail end adopts martensite stainless steel material to make at least, and head adoption austenite stainless steel material make.
Description
Technical field
This utility model belongs to the technical field of bimetallic self tapping cement crab-bolt.
Background technology
Circulate in Chinese market at present is mostly the self tapping cement crab-bolt of carbon steel, its corrosion resistance poor effect.And the self tapping cement crab-bolt of major part is for open air, after self tapping cement crab-bolt penetrates cement or the connection of other object, in the most exposed air out of doors or in various weak acid and weak base states of its head, after the Long Term Contacts such as the oxygen in air and water vapour, get rusty, burn into loosen etc. various situations all can occur, affect the bulk life time of its building.
Summary of the invention
The purpose of this utility model is to provide a kind of bimetallic self tapping cement crab-bolt, and it had both had the intensity enough penetrating cement, and had had again corrosion resistance, and two kinds of performances have both, then can extend the life-span of building together with above-mentioned self tapping cement anchor bolts.
A kind of bimetallic self tapping cement crab-bolt, including head, and the bar portion being connected with head, bar portion is provided with the screw thread of self-taped type, bar portion has head end and tail end, at least tail end and uses martensite stainless steel material to make, and head uses austenitic stainless steel material to make.
On the basis of such scheme and as the preferred version of such scheme: head end uses austenitic stainless steel material to make.
On the basis of such scheme and as the preferred version of such scheme: head end uses martensite stainless steel material to make.
On the basis of such scheme and as the preferred version of such scheme: described screw thread includes the first screw thread and the second screw thread, the external diameter of the first screw thread is more than the external diameter of the second screw thread, and the first screw thread and the second screw thread are that the arrangement mode of double thread is located in bar portion.
On the basis of such scheme and as the preferred version of such scheme: head uses hexagonal flange head.
On the basis of such scheme and as the preferred version of such scheme: the flange back side of head is provided with anti-slip veins.
On the basis of such scheme and as the preferred version of such scheme: be horizontal tail bundle tooth at the receipts tooth in bar portion, Beam End end face is less than or equal to the core diameter of thread.
This utility model highlights and useful having the technical effect that compared to existing technology
Bimetallic self tapping cement crab-bolt of the present utility model, its head uses austenitic stainless steel material, which ensure that the corrosion resistance of head, thus ensures the building life using this bimetallic self tapping cement crab-bolt；Additionally, at least tail end uses martensite stainless steel material to make, it has higher hardness, coordinates self-taped type screw thread to have and stronger attacks brill ability.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Detailed description of the invention
With specific embodiment, this utility model is further described below in conjunction with the accompanying drawings, sees Fig. 1；
Embodiment one,
As it is shown in figure 1, this gives a kind of bimetallic self tapping cement crab-bolt, including head 1 and bar portion 2.Head is connected with bar portion.Wherein, bar portion has head end 21 and tail end 22.Tail end relative to head end away from head.In the present embodiment, tail end uses martensite stainless steel material to make, and head and head end use austenitic stainless steel material to make.Being provided with the screw thread 3 of self-taped type in bar portion, as shown in FIG., screw thread extends to head end from tail end.
Owing to head and head end all use austenitic stainless steel material, which ensure that the corrosion resistance of the head end in head and bar portion, furthermore, after using austenitic stainless steel material both it, it is to avoid junction corrosion fracture both it, breakage phenomena can be effectively prevented from.Tail end uses martensite stainless steel material to make, and it has higher hardness, coordinates self-taped type screw thread to have and stronger attacks brill ability.
In the present embodiment, above-mentioned screw thread 3 includes the first screw thread 31 and the second screw thread 32, and the external diameter of the first screw thread is more than the external diameter of the second screw thread, and the first screw thread and the second screw thread are that the arrangement mode of double thread is located in bar portion.As the directly deformation of this structure, screw thread can also be single thread.
In the present embodiment, head uses hexagonal flange head.The flange back side 2a of head is provided with anti-slip veins 4.
In the present embodiment, being horizontal tail bundle tooth at the receipts tooth in bar portion, Beam End end face is less than or equal to the core diameter of thread, it should be noted that footpath, the end is also referred to as internal diameter.
Embodiment two,
The bimetallic self tapping cement crab-bolt of the present embodiment is roughly the same with the bimetallic self tapping cement crab-bolt that embodiment one is given, the difference of the two is, in the bimetallic self tapping cement crab-bolt of the present embodiment, bar portion uses martensite stainless steel material to make, specifically, head end and tail end all use martensite stainless steel material to make.And head have employed austenitic stainless steel material, which ensure that head corrosion resistance, and the body of rod uses martensite stainless steel material to make, also ensure that this bimetallic self tapping cement crab-bolt has and stronger attack brill ability.
Claims (7)
1. a bimetallic self tapping cement crab-bolt, including head, and the bar portion being connected with head, bar portion is provided with the screw thread of self-taped type, it is characterized in that: bar portion has head end and tail end, at least tail end and uses martensite stainless steel material to make, and head uses austenitic stainless steel material to make.
Bimetallic self tapping cement crab-bolt the most according to claim 1, it is characterised in that: head end uses austenitic stainless steel material to make.
Bimetallic self tapping cement crab-bolt the most according to claim 1, it is characterised in that: head end uses martensite stainless steel material to make.
4. according to the bimetallic self tapping cement crab-bolt described in claim 1 or 2 or 3, it is characterized in that: described screw thread includes the first screw thread and the second screw thread, the external diameter of the first screw thread is more than the external diameter of the second screw thread, and the first screw thread and the second screw thread are that the arrangement mode of double thread is located in bar portion.
Bimetallic self tapping cement crab-bolt the most according to claim 1, it is characterised in that: head uses hexagonal flange head.
Bimetallic self tapping cement crab-bolt the most according to claim 5, it is characterised in that: the flange back side of head is provided with anti-slip veins.
Bimetallic self tapping cement crab-bolt the most according to claim 1, it is characterised in that: being horizontal tail bundle tooth at the receipts tooth in bar portion, Beam End end face is less than or equal to the core diameter of thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620064153.7U CN205478787U (en) | 2016-01-22 | 2016-01-22 | Bimetal self tapping cement crab -bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620064153.7U CN205478787U (en) | 2016-01-22 | 2016-01-22 | Bimetal self tapping cement crab -bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205478787U true CN205478787U (en) | 2016-08-17 |
Family
ID=56638312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620064153.7U Expired - Fee Related CN205478787U (en) | 2016-01-22 | 2016-01-22 | Bimetal self tapping cement crab -bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205478787U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763065A (en) * | 2016-12-12 | 2017-05-31 | 上海翔锐紧固件有限公司 | A kind of self tapping that can be used for concrete locks screw thread |
-
2016
- 2016-01-22 CN CN201620064153.7U patent/CN205478787U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763065A (en) * | 2016-12-12 | 2017-05-31 | 上海翔锐紧固件有限公司 | A kind of self tapping that can be used for concrete locks screw thread |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Bimetal self tapping cement crab -bolt Effective date of registration: 20170907 Granted publication date: 20160817 Pledgee: Agricultural Bank of China Limited by Share Ltd. Jiaxing science and Technology Branch Pledgor: JIAXING UNITEK MACHINERY TECHNOLOGY CO.,LTD. Registration number: 2017330000099 |
|
| 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: 20160817 Termination date: 20220122 |