CN203730491U - Expansion bolt - Google Patents
Expansion bolt Download PDFInfo
- Publication number
- CN203730491U CN203730491U CN201420006267.7U CN201420006267U CN203730491U CN 203730491 U CN203730491 U CN 203730491U CN 201420006267 U CN201420006267 U CN 201420006267U CN 203730491 U CN203730491 U CN 203730491U
- Authority
- CN
- China
- Prior art keywords
- expansion
- conical head
- sleeve
- expansion sleeve
- nut
- 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 bolts and discloses an expansion bolt. The expansion bolt comprises a screw (1), a main casing pipe (2) and a nut (7); one end of the screw (1) is a conical head (11); the other end of the screw (1) is a threaded end (12) which is provided with threads; the threaded end (12) is connected with the nut (7) is a matching mode; a screw (1) section which is arranged between the conical head (11) and the nut (7) are connected with a second expansion casing pipe (4), a first expansion casing pipe (3), a main casing pipe (2) and a gasket (5). The expansion bolt has the advantages of increasing contact points and contact area between the expansion casing pipes and an expansion hole, being large in bearing load and enabling the expansion bolt to not easy to swing laterally and enabling the expansion bolt to be prevented from falling out from the expansion hole due to the fact that three contact points are in contact with the expansion hole.
Description
Technical field
The utility model relates to bolt, has related in particular to a kind of EXPANSION ANCHOR BOLTS.
Background technique
EXPANSION ANCHOR BOLTS comprises swell fixture and the nut matching with it and expansion sleeve, wherein swell fixture bolt end is truncated cone shape ailhead or is set to truncated cone shape nut, when use, tighten swell fixture or nut, truncated cone shape ailhead or truncated cone shape nut enter in expansion sleeve from small end to large side pressure, force expansion sleeve dilatancy, and expand in mounting hole.
And existing expansion sleeve all only has single sleeve pipe, its dilatancy is little, causes the area of contact of expansion sleeve and inflation port little, and whole EXPANSION ANCHOR BOLTS is very easy to come off in inflation port.
Summary of the invention
The utility model is for only there being single-point to contact between EXPANSION ANCHOR BOLTS in prior art and inflation port, join strength is low, EXPANSION ANCHOR BOLTS easily produces the shortcoming such as vacillate now to the left, now to the right and come off, a kind of employing double expansion sleeve pipe is provided, point of contact and area of contact between expansion sleeve and inflation port are increased, there is bearing load large, be not easy the advantage coming off in inflation port.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
EXPANSION ANCHOR BOLTS, comprise screw rod, main sleeve pipe, nut, one end of screw rod is conical head, and the other end is the threaded end that screw thread is set, threaded end and nut are connected, and are socketed with the second expansion sleeve, the first expansion sleeve, main sleeve pipe and pad on the screw rod between conical head and nut.On screw rod, overlap successively from right to left connected nut, pad, main sleeve pipe, the first expansion sleeve, the second expansion sleeve.
As preferably, compression spring is also set between pad and nut.
As preferably, the main conical head that the left end of main sleeve pipe is evagination, main conical head is connected with the first expansion sleeve.
As preferably, the first expansion sleeve right-hand member arranges the first taper mouth of indent, and main conical head and the first taper mouth are connected.Main conical head is arranged in the first taper mouth, and both interference fit connect.
As preferably, the first conical head that the left end of the first expansion sleeve is evagination, the right-hand member of the second expansion sleeve arranges the second taper mouth of indent, and the first conical head and the second taper mouth are connected.The first conical head is arranged in the second taper mouth, and both interference fit connect.
As preferably, the left end of the second expansion sleeve is provided with dop, and dop contacts with the conical head on screw rod.
As preferably, the right-hand member of the first expansion sleeve is provided with first set tube opening groove.First set tube opening groove be arranged on the first expansion sleeve right-hand member the first taper mouth place.
As preferably, the right-hand member of the second expansion sleeve is provided with the right opening slot of the second sleeve pipe, and the left end of the second expansion sleeve is provided with the left opening slot of the second sleeve pipe.The left end of the second expansion sleeve is provided with the left opening slot of the second sleeve pipe, and the conical head of screw rod left end pushes the left opening slot of the second sleeve pipe, and the left end of the second expansion sleeve is expanded, and has realized thus triple expansions, has improved the load of EXPANSION ANCHOR BOLTS.The right opening slot of the second sleeve pipe is arranged on the second taper mouth place of the second expansion sleeve right-hand member.
The utility model is owing to having adopted above technological scheme, there is significant technique effect: the utility model passes through double expansion sleeve pipe, point of contact and area of contact between expansion sleeve and inflation port are increased, have advantages of that bearing load is large, contact with inflation port by three point of contact, make EXPANSION ANCHOR BOLTS be not easy to vacillate now to the left, now to the right, prevent from that EXPANSION ANCHOR BOLTS bolt from producing loosening in inflation port, to come off.
Brief description of the drawings
Fig. 1 is the utility model embodiment 1 structural representation.
Fig. 2 is the structural representation of the first expansion sleeve in Fig. 1.
Fig. 3 is the structural representation of the second expansion sleeve in Fig. 1.
Fig. 4 is the utility model embodiment 1 erection drawing.
The toponym that in above accompanying drawing, each number designation refers to is as follows: wherein 1-screw rod, 2-main sleeve pipe, the 3-the first expansion sleeve, the 4-the second expansion sleeve, 5-pad, 6-compression spring, 7-nut, 11-conical head, 12-threaded end, 21-main conical head, the 31-the first taper mouth, the 32-the first conical head, 33-first set tube opening groove, the 41-the second taper mouth, the right opening slot of the 42-the second sleeve pipe, the left opening slot of the 43-the second sleeve pipe, 44-dop.
Embodiment
Below in conjunction with accompanying drawing 1 to Fig. 4 and embodiment, the utility model is described in further detail:
Embodiment 1
EXPANSION ANCHOR BOLTS, as shown in Figures 1 to 4, comprise screw rod 1, main sleeve pipe 2, nut 7, one end of screw rod 1 is conical head 11, the other end is the threaded end 12 that screw thread is set, threaded end 12 is connected with nut 7, is socketed with the second expansion sleeve 4, the first expansion sleeve 3, main sleeve pipe 2 and pad 5 on the screw rod 1 between conical head 11 and nut 7.On screw rod 1, overlap successively from right to left connected nut 7, pad 5, main sleeve pipe 2, the first expansion sleeve 3, the second expansion sleeve 4, wherein the right-hand member of the first expansion sleeve 3, the second expansion sleeve 4 is equipped with opening slot, therefore, in the time that nut 7 is tightened left, the main conical head 21 of main sleeve pipe 2 left ends pushes the first taper mouth 31 of the first expansion sleeve 3, and the first set tube opening groove 33 of the right-hand member of the first expansion sleeve 3 is expanded; The first conical head 32 of the first expansion sleeve 3 left ends pushes the right opening slot 42 of the second sleeve pipe of the second expansion sleeve 4 right-hand members, and the right-hand member of two expansion sleeves 4 is expanded, thereby realize, EXPANSION ANCHOR BOLTS is connected in inflation port.
Between pad 5 and nut 7, compression spring 6 is also set.The left end of main sleeve pipe 2 is the main conical head 21 of evagination, and main conical head 21 is connected with the first expansion sleeve 3.
The first expansion sleeve 3 right-hand members arrange the first taper mouth 31 of indent, and main conical head 21 and the first taper mouth 31 are connected.Main conical head 21 is arranged in the first taper mouth 31, and both interference fit connect.
The left end of the first expansion sleeve 3 is that the second taper mouth 41, the first conical heads 32 and the second taper mouth 41 that the right-hand member of the first conical head 32, the second expansion sleeves 4 of evagination arranges indent is connected.The first conical head 32 is arranged in the second taper mouth 41, and both interference fit connect.The first taper mouth 31, the second taper mouth 41 and dop 44 contact with inflation port respectively, form three point of contact, can effectively prevent that EXPANSION ANCHOR BOLTS from waving in inflation port, prevent that EXPANSION ANCHOR BOLTS from coming off in inflation port, increase the surface of contact between EXPANSION ANCHOR BOLTS and inflation port, effectively improve the load of EXPANSION ANCHOR BOLTS.
The left end of the second expansion sleeve 4 is provided with dop 44, and dop 44 contacts with the conical head 11 on screw rod 1.The right-hand member of the first expansion sleeve 3 is provided with first set tube opening groove 33.First set tube opening groove 33 be arranged on the first expansion sleeve 3 right-hand members the first taper mouth 31 places.
The left end that the right-hand member of the second expansion sleeve 4 is provided with right opening slot 42, the second expansion sleeves 4 of the second sleeve pipe is provided with the left opening slot 43 of the second sleeve pipe.The left end of the second expansion sleeve 4 is provided with the left opening slot 43 of the second sleeve pipe, and the conical head 11 of screw rod 1 left end pushes the left opening slot 43 of the second sleeve pipe, and the left end of the second expansion sleeve 4 is expanded, and has realized thus triple expansions, has improved the load of EXPANSION ANCHOR BOLTS.The right opening slot 42 of the second sleeve pipe is arranged on the second taper mouth 41 places of the second expansion sleeve 4 right-hand members.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (8)
1. EXPANSION ANCHOR BOLTS, comprise screw rod (1), main sleeve pipe (2), nut (7), it is characterized in that: one end of screw rod (1) is conical head (11), the other end is the threaded end (12) that screw thread is set, threaded end (12) is connected with nut (7), is socketed with the second expansion sleeve (4), the first expansion sleeve (3), main sleeve pipe (2) and pad (5) on the screw rod (1) between conical head (11) and nut (7).
2. EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that: between pad (5) and nut (7), compression spring (6) is also set.
3. EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that: the main conical head (21) that the left end of main sleeve pipe (2) is evagination, main conical head (21) is connected with the first expansion sleeve (3).
4. EXPANSION ANCHOR BOLTS according to claim 2, is characterized in that: the first expansion sleeve (3) right-hand member arranges first taper mouth (31) of indent, and main conical head (21) is connected with the first taper mouth (31).
5. EXPANSION ANCHOR BOLTS according to claim 1, it is characterized in that: the first conical head (32) that the left end of the first expansion sleeve (3) is evagination, the right-hand member of the second expansion sleeve (4) arranges second taper mouth (41) of indent, and the first conical head (32) is connected with the second taper mouth (41).
6. EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that: the left end of the second expansion sleeve (4) is provided with dop (44), and dop (44) contacts with the conical head (11) on screw rod (1).
7. EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that: the right-hand member of the first expansion sleeve (3) is provided with first set tube opening groove (33).
8. EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that: the right-hand member of the second expansion sleeve (4) is provided with the right opening slot of the second sleeve pipe (42), and the left end of the second expansion sleeve (4) is provided with the left opening slot of the second sleeve pipe (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006267.7U CN203730491U (en) | 2014-01-02 | 2014-01-02 | Expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006267.7U CN203730491U (en) | 2014-01-02 | 2014-01-02 | Expansion bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730491U true CN203730491U (en) | 2014-07-23 |
Family
ID=51200569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420006267.7U Expired - Fee Related CN203730491U (en) | 2014-01-02 | 2014-01-02 | Expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730491U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355458A (en) * | 2017-07-06 | 2017-11-17 | 海盐县通顺标准件厂 | A kind of modified form setscrew |
| CN111255785A (en) * | 2019-12-11 | 2020-06-09 | 浙江航鑫支吊架有限公司 | Expansion anchor bolt for up-down double expansion of anti-seismic bracket and manufacturing method |
-
2014
- 2014-01-02 CN CN201420006267.7U patent/CN203730491U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355458A (en) * | 2017-07-06 | 2017-11-17 | 海盐县通顺标准件厂 | A kind of modified form setscrew |
| CN107355458B (en) * | 2017-07-06 | 2022-11-25 | 海盐县通顺标准件厂 | Improved expansion screw |
| CN111255785A (en) * | 2019-12-11 | 2020-06-09 | 浙江航鑫支吊架有限公司 | Expansion anchor bolt for up-down double expansion of anti-seismic bracket and manufacturing method |
| CN111255785B (en) * | 2019-12-11 | 2022-01-11 | 浙江航鑫支吊架有限公司 | Expansion anchor bolt for up-down double expansion of anti-seismic bracket and manufacturing method |
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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: 20140723 Termination date: 20170102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |