CN206017365U - A kind of crab-bolt - Google Patents
A kind of crab-bolt Download PDFInfo
- Publication number
- CN206017365U CN206017365U CN201620692073.6U CN201620692073U CN206017365U CN 206017365 U CN206017365 U CN 206017365U CN 201620692073 U CN201620692073 U CN 201620692073U CN 206017365 U CN206017365 U CN 206017365U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- expansion sleeve
- screw
- nut
- bullet
- 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
Links
Abstract
The utility model belongs to mechanical field, and in particular to a kind of crab-bolt.A kind of crab-bolt, including screw rod, bullet and expansion sleeve, the two ends of screw rod are provided with isometric external screw thread, the internal diameter of expansion sleeve is coordinated for gap with the external diameter of screw rod, one end of expansion sleeve is provided with six grooves at equal intervals, screw is provided with the middle part of bullet, internal thread is provided with the screw, the internal thread is matched with the external screw thread at screw rod two ends, one end of screw rod is threaded connection with bullet, and screw rod is socketed with expansion sleeve, and the conical surface of bullet is adjacent with the groove of expansion sleeve, the screw rod other end and nut screw connection, are additionally provided with pad between nut and expansion sleeve.
Description
Technical field
The utility model belongs to mechanical field, and in particular to a kind of crab-bolt.
Background technology
Crab-bolt is a kind of new metal fastener material, its can be used for rear in various curtain walls, marble dry hanging construction plus
Embedded part is installed, it can also be used to which equipment is installed, and highway, Bridge guardrail are installed；The occasions such as concrete structure reinforcement.Although have on market
A variety of crab-bolts, but most of crab-bolts often have following weak point：1st, it is not easy to construct；2nd, construction cost is high.
Utility model content
Utility model purpose：It is new that the utility model makes improvement, i.e. this practicality for the problem that above-mentioned prior art is present
Type discloses a kind of crab-bolt.
Technical scheme：A kind of crab-bolt, including screw rod, bullet and expansion sleeve,
The two ends of the screw rod are provided with isometric external screw thread,
The internal diameter of the expansion sleeve is coordinated for gap with the external diameter of the screw rod, and one end of the expansion sleeve sets at equal intervals
There are six grooves,
Screw is provided with the middle part of the bullet, in the screw, internal thread is provided with, the internal thread and the screw rod two ends
External screw thread matches,
One end of the screw rod is threaded connection with the bullet, and the screw rod is socketed with the expansion sleeve, described
The conical surface of bullet is adjacent with the groove of the expansion sleeve, the screw rod other end and nut screw connection, the nut with described
Pad is additionally provided between expansion sleeve.
Further, the lateral wall for being provided with one end of the expansion sleeve of groove is provided with multiple triangular hills at equal intervals.
Further, the externally threaded length at the two ends of the screw rod is 15mm.
Further, the length of the expansion sleeve is 70mm.
Further, the depth of the groove is 20mm.
Further, the nut is tetragonal nut or hex nut or octagon nut.
Further, the thickness of the pad is 4mm.
Beneficial effect：Disclosed in the utility model, a kind of crab-bolt has the advantages that：
1st, simple structure；
2nd, it is easy to construct；
3rd, construction cost is low；
4th, have a safety feature.
Description of the drawings
Structural representations of the Fig. 1 for screw rod；
Structural representations of the Fig. 2 for bullet；
Structural representations of the Fig. 3 for expansion sleeve；
Fig. 4 is a kind of structural representation of crab-bolt disclosed in the utility model；
Wherein：
1- screw rod 11- external screw threads
2- bullet 3- pads
4- nut 5- expansion sleeves
51- grooves
Specific embodiment：
Below specific embodiment of the present utility model is described in detail.
Specific embodiment 1
As shown in figures 1-4, a kind of crab-bolt, including screw rod 1, bullet 2 and expansion sleeve 5,
The two ends of screw rod 1 are provided with isometric external screw thread 11,
The internal diameter of expansion sleeve 5 is coordinated for gap with the external diameter of screw rod 1, and one end of expansion sleeve 5 is provided with six at equal intervals and leads to
Groove 51,
The middle part of bullet 2 is provided with screw, is provided with internal thread in the screw, the external screw thread at the internal thread and 1 two ends of screw rod
11 match,
One end of screw rod 1 is threaded connection with bullet 2, and screw rod 1 is socketed with expansion sleeve 5, the conical surface of bullet 2 with swollen
The groove 51 of expansion set 5 is adjacent, and 1 other end of screw rod is coordinated with nut 4, is additionally provided with pad 3 between nut 4 and expansion sleeve 5.
Further, the lateral wall for being provided with one end of the expansion sleeve 5 of groove 51 is provided with multiple triangular hills at equal intervals.
Further, the length of the external screw thread 11 at the two ends of screw rod 1 is 15mm.
Further, the length of expansion sleeve 5 is 70mm.
Further, the depth of groove 51 is 20mm.
Further, nut 4 is tetragonal nut.
Further, the thickness of pad 3 is 4mm.
Specific embodiment 2
Roughly the same with specific embodiment 1, nut 4 is differed only in for hex nut.
Specific embodiment 3
Roughly the same with specific embodiment 1, nut 4 is differed only in for octagon nut.
Above embodiment of the present utility model is elaborated.But the utility model is not limited to above-mentioned enforcement
Mode, in the ken that art those of ordinary skill possesses, can be with without departing from the utility model ancestor
Make a variety of changes on the premise of purport.
Claims (1)
1. a kind of crab-bolt, it is characterised in that including screw rod, bullet and expansion sleeve,
The two ends of the screw rod are provided with isometric external screw thread,
The internal diameter of the expansion sleeve is coordinated for gap with the external diameter of the screw rod, and one end of the expansion sleeve is provided with six at equal intervals
Individual groove,
Screw is provided with the middle part of the bullet, in the screw, internal thread is provided with, the outer spiral shell at the internal thread and the screw rod two ends
Line matches,
One end of the screw rod is threaded connection with the bullet, and the screw rod is socketed with the expansion sleeve, the taper
The conical surface of body is adjacent with the groove of the expansion sleeve, the screw rod other end and nut screw connection, in the nut and the expansion
Pad is additionally provided between set, wherein：
The lateral wall for being provided with one end of the expansion sleeve of groove is provided with multiple triangular hills at equal intervals；
The externally threaded length at the two ends of the screw rod is 15mm；
The length of the expansion sleeve is 70mm；
The depth of the groove is 20mm；
The nut is tetragonal nut or hex nut or octagon nut；
The thickness of the pad is 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620692073.6U CN206017365U (en) | 2016-06-28 | 2016-06-28 | A kind of crab-bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620692073.6U CN206017365U (en) | 2016-06-28 | 2016-06-28 | A kind of crab-bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206017365U true CN206017365U (en) | 2017-03-15 |
Family
ID=58244386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620692073.6U Expired - Fee Related CN206017365U (en) | 2016-06-28 | 2016-06-28 | A kind of crab-bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206017365U (en) |
-
2016
- 2016-06-28 CN CN201620692073.6U patent/CN206017365U/en not_active Expired - Fee Related
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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: 20170315 Termination date: 20190628 |