CN105715647B - Self-positioning rotary-preventing expansion bolt - Google Patents
Self-positioning rotary-preventing expansion bolt Download PDFInfo
- Publication number
- CN105715647B CN105715647B CN201610262648.5A CN201610262648A CN105715647B CN 105715647 B CN105715647 B CN 105715647B CN 201610262648 A CN201610262648 A CN 201610262648A CN 105715647 B CN105715647 B CN 105715647B
- Authority
- CN
- China
- Prior art keywords
- screw rod
- conical termination
- connecting portion
- head
- root
- 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.)
- Active
Links
- 238000012856 packing Methods 0.000 claims abstract description 5
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000011900 installation process Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
- F16B13/066—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a kind of self-positioning rotary-preventing expansion bolt, including screw rod, expansion tube, packing ring and nut, the front end of the screw rod is conical termination, middle part is the body of rod, rear end is thread segment, the front portion of expansion tube is provided with some axially extending expansion otch, it is provided with the top of the screw rod and the integrally formed anti-rotation locator card of screw rod, the anti-rotation locator card includes the root being sequentially connected, connecting portion and head, the root is vertically arranged and the center of stray circle cone-shaped end is connected with conical termination, projection of the head on conical termination is just in the end face edge of conical termination, the connecting portion be obliquely installed and projection of the connecting portion on conical termination just past conical termination center.Solve in installation process, the problem of screw rod follows nut to rotate, make screw rod be easier to fix, greatly improve operating efficiency.
Description
Technical field
The present invention relates to technical field of fastening, and in particular to a kind of to prevent that screw rod rotates swollen with nut during installation
Swollen bolt.
Background technology
Conventional expanded bolt is made up of screw rod, expansion tube, packing ring and nut, and the front end of screw rod is conical termination, middle part
It is thread segment for the body of rod, rear end, the front portion of expansion tube is provided with some axially extending expansion otch.During installation, first drill, will be swollen
In swollen bolt insertion drilling, nut is turned, outwards expands drawing expansion tube using conical termination, expansion tube is produced with wall
Frictional force, conical termination produces friction with expansion tube again, final using the frictional force transmitted, and installs fixed expansion bolt.
Conventional expanded bolt arrangement is simple, but outwards drawing degree is inadequate, and before frictional force is not big enough, screw rod can not be consolidated
It is fixed, nut can be followed to rotate in the same direction, cause nut quickly to fix the object that needs anchor, cause work
Efficiency is low.
The content of the invention
Present invention seek to address that in installation process, the problem of screw rod rotates with nut.
Therefore, the technical solution adopted in the present invention is：A kind of self-positioning rotary-preventing expansion bolt, including screw rod, expansion
Pipe, packing ring and nut, the front end of the screw rod are conical termination, and middle part is the body of rod, and rear end is thread segment, the front portion of expansion tube
It is provided with some axially extending expansion otch, it is characterised in that：It is provided with the top of the screw rod integrally formed anti-with screw rod
Turn locator card, the anti-rotation locator card includes root, connecting portion and the head being sequentially connected, and the root is vertically arranged and deviateed
The center of conical termination is connected with conical termination, and projection of the head on conical termination is just at the end of conical termination
Face edge, the connecting portion is obliquely installed and projection of the connecting portion on conical termination is just past in conical termination
The heart.
Structural principle：Anti-rotation locator card is set up in the front end of screw rod cone termination, the root of anti-rotation locator card is set vertically
Put and the center of stray circle cone-shaped end is connected with conical termination, there are enough changes when ensureing anti-rotation locator card by resistance bending
Shape amount；Projection of the head on conical termination is just in the end face edge of conical termination, to ensure smoothly in insertion drilling,
Bending deformation occiput exceeds the end face edge of conical termination, is contacted with wall；Connecting portion is obliquely installed and connecting portion is in circle
Projection on cone-shaped end just past conical termination center, to ensure screw rod both sides stress balance.
As the preferred of such scheme, the head is spheroidal or circular arc, and the top surface on head is tack or large radius
Arc surface.Optimization molding, it is easy to manufacture and uses, and ensure that head and wall side wall there are enough contacts area, so as to produces
Big side-friction, screw rod is fixed.
Further, the width of the connecting portion gradually increases from top to bottom, and Breadth Maximum is more than root width, so that
The inner side of the link position of root and connecting portion forms hanging face.Decline shape suddenly in the link position width of root and connecting portion
Into hanging face, when anti-rotation locator card head is by resistance, it is easier to be deformed and bending at link position.
Beneficial effects of the present invention：Solve in installation process, the problem of screw rod follows nut to rotate, be easier screw rod solid
It is fixed, greatly improve operating efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
By way of example and in conjunction with the accompanying drawings, the invention will be further described：
As shown in figure 1, a kind of self-positioning rotary-preventing expansion bolt, mainly by 4 groups of screw rod 1, expansion tube 2, packing ring 3 and nut
Into.The front end of screw rod 1 is conical termination, and middle part is the body of rod, and rear end is thread segment, and the front portion of expansion tube 2 is provided with some axial directions
The expansion otch 2a of extension, it is same as the prior art, it is standard fasteners, will not be repeated here.
Difference is：The top of screw rod 1 is provided with determines with the integrally formed anti-rotation locator card 5 of screw rod 1, screw rod 1 with anti-rotation
Position 5 integrally casting shapings of card.Anti-rotation locator card 5 is made up of the root 5a, connecting portion 5b and head 5c being sequentially connected.
Root 5a is vertically arranged and the center of stray circle cone-shaped end is connected with conical termination, and head 5c top surface is flat
Head or large radius arc face.Projections of the head 5c on conical termination is just in the end face edge of conical termination, connecting portion
5b be obliquely installed and projections of the connecting portion 5b on conical termination just past conical termination center.
Preferably, head 5c is spheroidal or circular arc.Head 5c top surface is tack or large radius arc face.
In addition, connecting portion 5b width gradually increases from top to bottom, and Breadth Maximum is more than root 5a width, so as in root
The inner side of portion 5a and connecting portion 5b link position forms hanging face.
Claims (3)
1. a kind of self-positioning rotary-preventing expansion bolt, including screw rod (1), expansion tube (2), packing ring (3) and nut (4), the spiral shell
The front end of bar (1) is conical termination, and middle part is the body of rod, and rear end is thread segment, and the front portion of expansion tube (2) is provided with some axial directions and prolonged
The expansion otch (2a) stretched, it is characterised in that：It is provided with the top of the screw rod (1) and determines with screw rod (1) integrally formed anti-rotation
Position card (5), the anti-rotation locator card (5) include root (5a), connecting portion (5b) and head (5c) being sequentially connected, the root
(5a) is vertically arranged and the center of stray circle cone-shaped end is connected with conical termination, the throwing of head (5c) on conical termination
Shadow is just in the end face edge of conical termination, and the connecting portion (5b) is obliquely installed and connecting portion (5b) is on conical termination
Projection just past conical termination center.
2. according to the self-positioning rotary-preventing expansion bolt described in claim 1, it is characterised in that：The head (5c) is spheroidal
Or circular arc, the top surface of head (5c) is tack or large radius arc face.
3. according to the self-positioning rotary-preventing expansion bolt described in claim 2, it is characterised in that：The width of the connecting portion (5b)
Gradually increase, and Breadth Maximum is more than root (5a) width from top to bottom, so as in root (5a) and connecting portion (5b) connection
The inner side of position forms hanging face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610262648.5A CN105715647B (en) | 2016-04-25 | 2016-04-25 | Self-positioning rotary-preventing expansion bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610262648.5A CN105715647B (en) | 2016-04-25 | 2016-04-25 | Self-positioning rotary-preventing expansion bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105715647A CN105715647A (en) | 2016-06-29 |
| CN105715647B true CN105715647B (en) | 2017-12-08 |
Family
ID=56162083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610262648.5A Active CN105715647B (en) | 2016-04-25 | 2016-04-25 | Self-positioning rotary-preventing expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105715647B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369030B (en) * | 2016-09-30 | 2018-10-16 | 齐齐哈尔大学 | It is readily removable to remove formula expansion bolt and its mounting and dismounting method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4557631A (en) * | 1983-08-29 | 1985-12-10 | Donan Jr David C | Off-center rock bolt anchor and method |
| FR2566853A1 (en) * | 1984-06-28 | 1986-01-03 | Michel Martial | Fixing stud |
| CN2566036Y (en) * | 2002-08-30 | 2003-08-13 | 张玉春 | Rotary-preventing expansion bolt |
| CN2646458Y (en) * | 2003-10-17 | 2004-10-06 | 颜端伟 | Fall-off proof expansion bolt |
| CN201187501Y (en) * | 2008-05-09 | 2009-01-28 | 曾亮 | Multi-point expansion bolt |
-
2016
- 2016-04-25 CN CN201610262648.5A patent/CN105715647B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105715647A (en) | 2016-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Mincai Inventor after: Zhao Xueda Inventor after: Zhang Tao Inventor after: Liu Dexin Inventor before: Zhao Xueda Inventor before: Zhang Tao Inventor before: Liu Dexin |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191127 Address after: 215000 NO.115, Yinsheng Road, Shengpu Town, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee after: SUZHOU CHINA VEHICLE CONSTRUCTION ENGINEERING Co.,Ltd. Address before: 100078 Beijing city Fengtai District park is a district 15 building five floor 501, 503 Patentee before: CRRC CONSTRUCTION ENGINEERING Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214104 room 301-218, block a, Xidong chuangrong building, No. 78, Danshan Road, anzhen street, Xishan District, Wuxi City, Jiangsu Province Patentee after: Jiangsu CRRC Urban Development Co.,Ltd. Address before: 215000 NO.115 Yinsheng Road, Shengpu Town, Suzhou Industrial Park, Jiangsu Province Patentee before: SUZHOU CHINA VEHICLE CONSTRUCTION ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221129 Address after: 226017 Free Seat Office Area, Floor 3, Building 11A, Zilang Science and Technology City, No. 60 Chongzhou Avenue, Nantong, Jiangsu Province (No. A21) Patentee after: Jiangsu CRRC Electromechanical Technology Co.,Ltd. Address before: 214104 room 301-218, block a, Xidong chuangrong building, No. 78, Danshan Road, anzhen street, Xishan District, Wuxi City, Jiangsu Province Patentee before: Jiangsu CRRC Urban Development Co.,Ltd. |