CN207212871U - A kind of prefastening setscrew - Google Patents
A kind of prefastening setscrew Download PDFInfo
- Publication number
- CN207212871U CN207212871U CN201721033195.5U CN201721033195U CN207212871U CN 207212871 U CN207212871 U CN 207212871U CN 201721033195 U CN201721033195 U CN 201721033195U CN 207212871 U CN207212871 U CN 207212871U
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- China
- Prior art keywords
- pretension
- cone
- inner conical
- conical drogue
- expansion sleeve
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Abstract
A kind of prefastening setscrew, belongs to setscrew technical field.Including expansion sleeve（4）, fastening bolt（1）Through expansion sleeve（4）And connect clamp nut（2）, it is characterised in that：Conical surface component is provided with, conical surface component includes inner conical drogue（5）With pretension cone（6）, inner conical drogue（5）Outer surface be described taper surface, pretension cone（6）From inner conical drogue（5）One end load inner conical drogue（5）, inner conical drogue（5）In relative to pretension cone（6）The other end load described expansion sleeve（4）In, described fastening bolt（1）Through inner conical drogue（5）With pretension cone（6）Threaded connection, in pretension cone（6）Outer end be additionally provided with for driving pretension cone（6）With fastening bolt（1）The pretension section to relatively rotate（12）.In this prefastening setscrew, pretension is carried out by pretension cone, is avoided and is rotated and can not be fastened in the borehole in fastening.
Description
Technical field
A kind of prefastening setscrew, belongs to setscrew technical field.
Background technology
Setscrew is common working face immobilising device, including an expansion sleeve, and some cut is offered outside expansion sleeve
Mouthful, bolt is housed in expansion sleeve, one end setting of bolt and notches fit is tapered, and the other end offers screw thread.Using
Shi Shouxian is in working face（Such as metope, ground）On using rig open up the drilling to match with expansion sleeve external diameter, then will
Setscrew is fitted into drilling, and then bolt is screwed using nut outside working face, is promoted using the taper surface of bolt
The otch spreading and drill hole inner wall for making expansion sleeve produce friction bond stress, reach fixed effect.
But in actual borehole, due to each side reason, the drilling being opened on working face such as the directly degree of drill bit is poor
Diameter be often greater than the diameter of its drill bit mark, that is, the diameter to drill is greater than the external diameter of setscrew expansion sleeve, therefore
After setscrew is loaded into drilling, larger gap be present between setscrew and drilling, therefore in fastening bolt, expansion
Set also can concomitant rotation, therefore fastening can not be realized.In the prior art, most common solution method is in setscrew and brill
Knock in nail in gap between hole or batten gap is filled up after fastened, but expansion bolt is completed after fastening often
Will not be concentric with drilling, the fastening performance of expansion bolt is had a strong impact on, while aesthetic property is poor.
The content of the invention
The technical problems to be solved in the utility model is：Overcome the deficiencies in the prior art, there is provided one kind is provided with and fastened
The pretension cone that bolt coordinates, and in the end set pretension section of pretension cone, can drill it is larger in the case of by pre-
Tight section makes pretension cone be rotated with fastening bolt, makes inner conical drogue or/and the advance tensioner of expansion sleeve, avoids boring in fastening
The prefastening setscrew that rotates and can not be fastened in hole.
Technical scheme is used by the utility model solves its technical problem：The prefastening setscrew, including expansion
Set, one end of expansion sleeve axially offer multiple openings and are spaced to form a plurality of expansion sleeve expansion piece, are provided through expansion sleeve
Fastening bolt, fastening bolt one end is provided with the taper surface coordinated with expansion sleeve expansion piece, and the other end is set with clamp nut,
It is characterized in that：It is provided with inner conical drogue and pretension cone, the outer surface of internal tapered sleeve is described taper surface, and pretension cone is from inner cone
One end of set loads inner conical drogue, is fitted into inner conical drogue relative to the other end of pretension cone in described expansion sleeve, described is tight
Fixing bolt is threadedly coupled through inner conical drogue with pretension cone, be additionally provided with the outer end of pretension cone for drive pretension cone with
The pretension section that fastening bolt relatively rotates.
Preferably, described pretension cone includes a up-thin-low-thick conical section, and the outer ring of conical section is pretension cone
Taper surface, the upper end of conical section coordinates with described inner conical drogue installs, and described pretension section is fixed on the lower surface of conical section,
Axial through hole is provided with pretension cone center, the screw thread with the cooperation of described fastening bolt is offered on through-hole wall.
Preferably, described pretension section with conical section is concentric fixes.
Preferably, the external diameter of a circle in described pretension section section is less than or equal under the conical section described in pretension cone
The diameter of end face.
Preferably, the section of described pretension section is regular polygon.
Preferably, described inner conical drogue includes inner conical drogue body, and inner conical drogue body is up-thin-low-thick taper tubular, inside
Axial direction of the bottom border of tapered sleeve body along inner conical drogue body, which uniformly offers, to be open and is spaced to form a plurality of inner conical drogue expansion piece.
Preferably, breach is opened up in the both sides of described expansion sleeve expansion piece Yu inner conical drogue body junction and forms inner conical drogue
Cut root groove.
Preferably, described expansion sleeve includes expansion sleeve body, and described opening is uniformly opened in the bottom week of expansion sleeve
The both sides of circle, expansion sleeve expansion piece and expansion sleeve body junction open up breach formation expansion sleeve and cut root groove.
Preferably, the both ends of described fastening bolt offer opposite screw thread respectively, respectively with described clamp nut
It is threadedly coupled with pretension cone.
Compared with prior art, beneficial effect possessed by the utility model is：
1st, in this prefastening setscrew, the pretension cone coordinated with fastening bolt is provided with, and in pretension cone
End set pretension section, by pretension section pretension cone can be made to be rotated with fastening bolt in the case where drilling is larger,
Make inner conical drogue or/and the advance tensioner of expansion sleeve, avoid rotating in the borehole in fastening and can not be fastened.
2nd, breach formation expansion sleeve is opened up in the both sides of each expansion sleeve expansion piece Yu expansion sleeve body junction and cuts root
Groove, expansion sleeve are cut after root groove opens up and finish, are more beneficial for deforming after expansion sleeve expansion piece is squeezed.
3rd, inner conical drogue can be set with multiple successively as needed, to increase tensioner effect.
4th, breach formation inner conical drogue is opened up in the both sides of each inner conical drogue expansion piece Yu inner conical drogue body junction and cuts root
Groove, inner conical drogue are cut after root groove opens up and finish, are more beneficial for deforming after inner conical drogue expansion piece is squeezed.
5th, inner conical drogue is provided with, the expansion amplitude of expansion sleeve can be increased, effectively improves tightness when in use.
Brief description of the drawings
Fig. 1 is prefastening setscrew front view.
Fig. 2 be in Fig. 1 A-A to sectional view.
Fig. 3 is prefastening setscrew expansion sleeve structural representation.
Fig. 4 is prefastening setscrew inner conical drogue structural representation.
Fig. 5 is prefastening setscrew pretension cone structure schematic diagram.
Fig. 6 is B-B direction structural representation in Fig. 5.
Wherein：1st, fastening bolt 2, clamp nut 3, pad 4, expansion sleeve 5, inner conical drogue 6, pretension cone
7th, expansion sleeve body 8, expansion sleeve cut root groove 9, inner conical drogue body 10, inner conical drogue and cut root groove 11, pretension cone taper
Face 12, pretension section.
Embodiment
Fig. 1 ~ 6 are most preferred embodiments of the present utility model, and 1 ~ 6 pair of the utility model is done furtherly below in conjunction with the accompanying drawings
It is bright.
As shown in Figure 1 and 2, a kind of prefastening setscrew, including expansion sleeve 4, expansion sleeve 4 are the cylindrical shape of both ends open.
One end of the self-expanding of inner conical drogue 5 set 4 is fitted into expansion sleeve 4, and one end that expansion sleeve 4 is loaded to inner conical drogue 5 is defined as this prefastening
The lower end of setscrew.Pretension cone 6 is fitted into inner conical drogue 5 from the bottom of inner conical drogue 5.Expansion sleeve 4 top open part according to
Secondary wash down and on be sequentially placed pad 3 and clamp nut 2, fastening bolt 1 coordinates with clamp nut 2 to be installed, fastening bolt 1 from
The inner chamber for entering expansion sleeve 4 after clamp nut 2 and pad 3 is sequentially passed through at the upper port of clamp nut 2 downwards, then the successively
It is connected after into inner conical drogue 5 with pretension cone 6.
As shown in figure 3, expansion sleeve 4 includes expansion sleeve body 7, in the bottom border of expansion sleeve body 7 along expansion sleeve body 7
Axial direction uniformly offer a plurality of opening, after opening is opened up finishes, the expansion sleeve that remains between adjacent two openings
Body 7 forms a plurality of expansion sleeve expansion piece.Opened up in the both sides of each expansion sleeve expansion piece with the junction of expansion sleeve body 7 scarce
Mouthful forming expansion sleeve cuts root groove 8, and expansion sleeve is cut after root groove 8 opens up and finish, and is more beneficial for expansion sleeve expansion piece and is squeezed it
After deform.
As shown in figure 4, inner conical drogue 5 includes inner conical drogue body 9, inner conical drogue body 9 is up-thin-low-thick taper tubular, inside
The bottom border of tapered sleeve body 9 uniformly offers a plurality of opening along the axial direction of inner conical drogue body 9, and it is finished opening is opened up
Afterwards, the inner conical drogue body 9 remained between adjacent two openings forms a plurality of inner conical drogue expansion piece.Expanded in each inner conical drogue
The both sides of piece and the junction of inner conical drogue body 9, which open up breach and form inner conical drogue, cuts root groove 10, and inner conical drogue, which is cut root groove 10 and opened up, to be finished
Afterwards, it is more beneficial for deforming after inner conical drogue expansion piece is squeezed.In pretension cone 6 opens up from inner conical drogue body 9
One end that tapered sleeve cuts root groove 10 loads inner conical drogue 5.Thinner one end self-expanding covers 4 bottoms and loaded in it in inner conical drogue 5.By setting
Inner conical drogue 5 is equipped with, the expansion amplitude of expansion sleeve can be increased, effectively improves the fastening journey of this prefastening setscrew when in use
Degree.Inner conical drogue 5 can also be set with successively as needed it is multiple, to increase tensioner effect.
As shown in Fig. 5 ~ 6, pretension cone 6 is up-thin-low-thick conical section including one, and the outer ring of conical section is bored for pretension
Body taper surface 11, thinner one end loads in it from the bottom of inner conical drogue 5 in pretension cone 6.At the bottom of the conical section of pretension cone 6
Portion and conical section be concentric to be fixed with pretension section 12, and the section of pretension section 12 is regular polygon, such as rectangle, regular hexagon, and in advance
The external diameter of a circle in the tight section of section 12 is less than or equal to the diameter of thicker one end in the conical section of pretension cone 6.
Offer downwards on the top of pretension cone 6 through its axial through hole, and offered on the inwall of the through hole
The internal thread coordinated with fastening bolt 1.The internal thread of internal thread and clamp nut 2 inside pretension cone 6 is in opposite direction, that is, exists
Two parts up and down of fastening bolt 1 do not open up two sections respectively with clamp nut 2 and pretension cone 6 while coordinating and in opposite direction
External screw thread.
It is specific to install and use process as described below：
The bottom that clamp nut 2 is coordinated into the self-tightening fixing bolt 1 after the top of fastening bolt 1 first loads pad 3,
Then the lower end of fastening bolt 1 is fitted into expansion sleeve 4 from top to bottom, then takes the bottom loading of the self-expanding of inner conical drogue 5 set 4 swollen
Expansion set 4 is interior and is sleeved on the outer ring of fastening bolt 1.Finally pretension cone 6 is loaded and and fastening bolt from the bottom of inner conical drogue 5
The external screw thread of 1 bottom coordinates installation, completes the assembling of this prefastening setscrew.
When in use, if the drilling of working face is now understood by instrument and pretension cone more than the external diameter of expansion sleeve 4
6 pretension section 12 coordinates, and pretension cone 6 and fastening bolt 1 are screwed, the pretension of pretension cone 6 during screwing
Cone taper surface 11 constantly extrudes inner conical drogue 5, while 5 continuous extrusion expansion of inner conical drogue set 4.Inner conical drogue 5 and expansion sleeve 4 are by crowded
After pressure, the inner conical drogue expansion piece of its inner conical drogue 5 and the expansion sleeve expansion piece of expansion sleeve 4 expand outwardly, and make the bottom of expansion sleeve 4
External diameter becomes big, and after the external diameter of the bottom of expansion sleeve 4 can match with drilling, this prefastening setscrew is integrally loaded into drilling
In, clamp nut 2 is then screwed outside working face, during clamp nut 2, the pretension cone taper of pretension cone 6
Face 11 constantly extrudes inner conical drogue 5, while 5 continuous extrusion expansion of inner conical drogue set 4, the inner conical drogue expansion piece and expansion sleeve 4 of inner conical drogue 5
Expansion sleeve expansion piece expand outwardly, most this prefastening setscrew and drilling are reliable fixed at last.
It is described above, only it is preferred embodiment of the present utility model, is not that other forms are made to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of change.But it is every without departing from the content of the technical scheme of the utility model, it is real according to technology of the present utility model
Any simple modification, equivalent variations and the remodeling that confrontation above example is made, still fall within the guarantor of technical solutions of the utility model
Protect scope.
Claims (9)
1. a kind of prefastening setscrew, including expansion sleeve（4）, expansion sleeve（4）One end axially offer it is multiple opening and between
Every forming a plurality of expansion sleeve expansion piece, the fastening bolt of expansion sleeve is provided through（1）, fastening bolt（1）One end be provided with
The taper surface that expansion sleeve expansion piece coordinates, the other end are set with clamp nut（2）, it is characterised in that：It is provided with inner conical drogue（5）With
Pretension cone（6）, inner conical drogue（5）Outer surface be described taper surface, pretension cone（6）From inner conical drogue（5）One end load
Inner conical drogue（5）, inner conical drogue（5）In relative to pretension cone（6）The other end load described expansion sleeve（4）In, described is tight
Fixing bolt（1）Through inner conical drogue（5）With pretension cone（6）Threaded connection, in pretension cone（6）Outer end be additionally provided with for driving
Dynamic pretension cone（6）With fastening bolt（1）The pretension section to relatively rotate（12）.
2. prefastening setscrew according to claim 1, it is characterised in that：Described pretension cone（6）Including one
Up-thin-low-thick conical section, the outer ring of conical section is pretension cone taper surface（11）, the upper end of conical section and described inner conical drogue
（5）Coordinate installation, described pretension section（12）The lower surface of conical section is fixed on, in pretension cone（6）Axle is provided with center
To through hole, offered on through-hole wall and described fastening bolt（1）The screw thread of cooperation.
3. prefastening setscrew according to claim 2, it is characterised in that：Described pretension section（12）It is same with conical section
The heart is fixed.
4. the prefastening setscrew according to Claims 2 or 3, it is characterised in that：Described pretension section（12）Section
External diameter of a circle is less than or equal to pretension cone（6）Described in conical section lower surface diameter.
5. the prefastening setscrew according to Claims 2 or 3, it is characterised in that：Described pretension section（12）Section
For regular polygon.
6. prefastening setscrew according to claim 1 or 2, it is characterised in that：Described inner conical drogue（5）Including inner cone
Cover body（9）, inner conical drogue body（9）For up-thin-low-thick taper tubular, in inner conical drogue body（9）Bottom border along inner conical drogue
Body（9）Axial direction uniformly offer be open and be spaced to form a plurality of inner conical drogue expansion piece.
7. prefastening setscrew according to claim 6, it is characterised in that：In described inner conical drogue expansion piece and inner cone
Cover body（9）The both sides of junction open up breach formation inner conical drogue and cut root groove（10）.
8. prefastening setscrew according to claim 1, it is characterised in that：Described expansion sleeve（4）Including expansion sleeve
Body（7）, described opening is uniformly opened in expansion sleeve（4）Bottom border, expansion sleeve expansion piece and expansion sleeve body（7）Even
The both sides at the place of connecing open up breach formation expansion sleeve and cut root groove（8）.
9. prefastening setscrew according to claim 1, it is characterised in that：Described fastening bolt（1）Both ends point
Do not offer opposite screw thread, respectively with described clamp nut（2）With pretension cone（6）Threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721033195.5U CN207212871U (en) | 2017-08-17 | 2017-08-17 | A kind of prefastening setscrew |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721033195.5U CN207212871U (en) | 2017-08-17 | 2017-08-17 | A kind of prefastening setscrew |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207212871U true CN207212871U (en) | 2018-04-10 |
Family
ID=61815382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721033195.5U Expired - Fee Related CN207212871U (en) | 2017-08-17 | 2017-08-17 | A kind of prefastening setscrew |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207212871U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236822A (en) * | 2018-11-15 | 2019-01-18 | 中国直升机设计研究所 | A kind of shearing resistance expansion bolt |
| CN112902776A (en) * | 2021-03-02 | 2021-06-04 | 陕西新通宇彤智能科技有限公司 | Expansion sealing sleeve of high-pressure electromagnetic force blasting device |
-
2017
- 2017-08-17 CN CN201721033195.5U patent/CN207212871U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236822A (en) * | 2018-11-15 | 2019-01-18 | 中国直升机设计研究所 | A kind of shearing resistance expansion bolt |
| CN112902776A (en) * | 2021-03-02 | 2021-06-04 | 陕西新通宇彤智能科技有限公司 | Expansion sealing sleeve of high-pressure electromagnetic force blasting device |
| CN112902776B (en) * | 2021-03-02 | 2023-11-28 | 陕西新通宇彤智能科技有限公司 | Expansion sealing sleeve of high-voltage electromagnetic blasting device |
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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 |
Granted publication date: 20180410 Termination date: 20180817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |