CN103075406B - Rotary closed type unilateral bolt fastener - Google Patents
Rotary closed type unilateral bolt fastener Download PDFInfo
- Publication number
- CN103075406B CN103075406B CN201310007783.1A CN201310007783A CN103075406B CN 103075406 B CN103075406 B CN 103075406B CN 201310007783 A CN201310007783 A CN 201310007783A CN 103075406 B CN103075406 B CN 103075406B
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- card
- screw rod
- annular snap
- axle journal
- journal section
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Abstract
The invention discloses a rotary closed type unilateral bolt fastener, which is characterized in that the front-segment rod body of a screw is a threaded rod, and the tail part of the screw is a polished rod shaft neck segment; a nut is matched with the threaded rod of the screw through threads; three circular cards are respectively a front-end card, a middle card and a tail card, and the sectors of the three circular cards can be axially overlaid on the same one circumferential position through rotation; and the sectors of the three circular cards can also be combined into a round plate body positioned on the same plane. The rotary closed type unilateral bolt fastener realizes unilateral operation and can be widely applied to civil and architectural engineering, mechanical engineering and the like.
Description
Technical field
The present invention relates to a kind of bolt fastener for carrying out monolateral installation in workpiece, belonging to mechanical assembly technique field.
Background technique
Common bolt is divided into screw rod and nut two-part, needs to insert screw rod and turnbuckle in side, is then tightened by nut at opposite side instrument.Staff needs simultaneously in the operation of component both sides, but at some special occasions, such as closed cross-section member or be inconvenient to the component touching certain one side, uses common bolt to install.
Such as: in concrete filled steel tube, beam-column connection place, because column section is closed section, plain bolt can not carry out both sides operation, cannot install.Existing punching bolt technology, very high to the reserved required precision of tube wall both sides bolt hole, aim at difficulty very greatly, and be difficult to application at side column and corner post Nodes.And in existing monolateral bolt, be not suitable for longspan or large load structure, and need more complicated setting tool and more loaded down with trivial details installation steps.
Summary of the invention
The present invention is the deficiency for avoiding existing for above-mentioned prior art, provides a kind of rotating closed formula unilateral bolt fastener, can not monolateral fastening deficiency to overcome existing bolt, improves the fastening effect of bolt.
The present invention is that technical solution problem adopts following technological scheme
The structural feature of the rotating closed formula unilateral bolt fastener of the present invention arranges:
One screw rod, the leading portion body of rod of described screw rod is set to threaded stem, stage casing is polished rod, and the afterbody of described screw rod is a polished rod axle journal section; The front-end face of described screw rod there is installation suggestion line with the spaced markings of 120; Nut and described screw flight bar are with screw-thread fit;
One nut, with described screw flight bar with screw-thread fit;
Three annular snap, are respectively front end card, middle card and trailer card, and described annular snap is sleeved in the afterbody axle journal section of described screw rod with cirque body; Described front end card and middle card freely can rotate in axle journal section, and described trailer card is fixedly connected with described axle journal section; The side-glance shape of described three annular snap is " cutter " shape, and described cirque body is its handle of a knife, and centered by cutter head, angle is not more than the sector of 120 °; By rotating described front end card and middle card can make the sector of described three annular snap be stacked on same circumferential position vertically; Also the sector place of the being combined into rounding disk body at grade of described three annular snap can be made.
The structural feature of the rotating closed formula unilateral bolt fastener of the present invention is also:
The described rounding disk body be combined into by the sector of three annular snap, its towards screw flight bar side be at one end set to for increasing frictional force resistance area.
Threaded stem in described screw rod and axle journal section are that split is arranged, and are fixed connection by screw thread.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, embody rule of the present invention only needs, at side construction bolt, to achieve one-side operation;
2, in the present invention, three annular snap form a rounding disk body after deployment, and block inwall, play fastening effect, fastening effect is good;
3, in the present invention, screw rod is simple circle rod, and end only has three annular snap, easy to make and good integrity;
4, in the present invention, annular snap utilizes the effect of gravity to launch voluntarily, without the need to auxiliary mounting tool, simple to operate;
5, the present invention meets Design Of Steel Structure requirement, can be advantageously applied to steel structure node and connect, especially concrete filled steel tube.
Accompanying drawing explanation
Fig. 1 a is screw-rod structure schematic diagram of the present invention; Fig. 1 b is mark schematic diagram in screw front end face in the present invention;
Fig. 2 a is screw rod tail schematic diagram in the present invention; Fig. 2 b is sector schematic diagram in annular snap in the present invention;
Fig. 3 a is that in the present invention, two annular snap launch schematic diagram; Fig. 3 b is sector combination schematic diagram in two annular snap;
Fig. 4 a is that in the present invention, three annular snap launch schematic diagram; Fig. 4 b is sector combination schematic diagram in three annular snap;
Fig. 5 a is view before the invention process is installed; Fig. 5 b is Fig. 5 a schematic side view;
Fig. 6 is using state schematic diagram of the present invention;
Number in the figure: 1 screw rod; 1a threaded stem; 1b axle journal section; 1c installation suggestion line; 1d polished rod; 2 annular snap; 2a front end card; 2b middle card; 2c trailer card; 3 nuts; 4 girder steel end plates; 5 steel pipes.
Embodiment
In the present embodiment, the vibrational power flow of rotating closed formula unilateral bolt fastener comprises:
As illustrated in figs. ia and ib, the leading portion body of rod of screw rod 1 is set to threaded stem 1a, stage casing is polished rod 1d, and the afterbody of screw rod 1 is a polished rod axle journal section 1b; The front-end face of screw rod 1 there is installation suggestion line 1c with the spaced markings of 120; The screw thread 1a bar of nut 3 and screw rod 1 is with screw-thread fit (as shown in Figure 5 a);
As shown in Figure 2 a and 2 b, three annular snap 2 are respectively front end card 2a, middle card 2b and trailer card 2c, and annular snap 2 is sleeved on the afterbody axle journal section 1b of screw rod with cirque body; Front end card 2a and middle card 2b freely can rotate in axle journal section, and trailer card 2c is fixedly connected with screw rod 1;
As shown in Figure 3 a and Figure 3 b shows, the side-glance shape of three annular snap 2 is " cutter " shape, and cirque body is its handle of a knife, and centered by cutter head, angle is not more than the sector of 120 °; Wherein, front end card 2a is identical with the thickness of middle card 2b, but front end card 2a and middle card 2b lays respectively at front-end face and ear end face and thickness is respectively the half of front end card 2a and middle card 2b for the cirque body be sleeved on axle journal section 1b; Equally, cirque body on trailer card 2c also needs to reserve to front end card 2a and middle card 2b on thickness to step down, and its cirque body is in the ear end face place of trailer card, the sector of three annular snap 2 can be made to be stacked in (as shown in Figure 2 a and 2 b) on same circumferential position vertically by rotating front end card 2a and middle card 2b; Also the sector place of the being combined into rounding disk body (as shown in figures 4 a and 4b) at grade of three annular snap 2 can be made; In order to increase resistance, rounding disk body towards threaded stem on screw rod 1 side be at one end set to for increasing frictional force resistance area.
Mounting type:
1, bolt is passed reserving hole, now three annular snap 2 are drawn on same circumferential position, and in vertically upward, have an indication wire to be in (as shown in figure 5 a and 5b) on vertical position in installation suggestion line 1c;
2, at the outside turnbuckle of operation end, 120 ° are rotated, because of the effect of surface friction drag, front end card 2a can not follow rotation, and middle card 2b rotates 120 °, is formed to misplace with front end card 2a, pull out bolt again, then front end card 2a and middle card 2b is just in same plane and has suffered;
3, by sense of rotation identical in step 2 again by screws 120 °, now, front end card 2a and middle card 2b all can not follow rotation because of the effect of friction, and is that trailer card 2c is also misplaced, then pulls out bolt and just define a complete circumference.
4, in working end, nut 3 is screwed on hand, then apply pretightening force by torque wrench, complete fixing (as shown in Figure 6) between steel pipe 5 and girder steel end plate 4.
Claims (3)
1. a rotating closed formula unilateral bolt fastener, is characterized in that arranging:
One screw rod (1), the leading portion body of rod of described screw rod (1) is set to threaded stem (1a), stage casing is polished rod (1d), and the afterbody of described screw rod (1) is a polished rod axle journal section (1b); The front-end face of described screw rod (1) there is installation suggestion line (1c) with the spaced markings of 120 °; The threaded stem (1a) of nut (3) and described screw rod (1) is with screw-thread fit;
Three annular snap (2), be respectively front end card (2a), middle card (2b) and trailer card (2c), described annular snap (2) is sleeved in the afterbody axle journal section (1b) of described screw rod with cirque body; Described front end card (2a) and middle card (2b) above freely can rotate in axle journal section (1b), and described trailer card (2c) is fixedly connected with described axle journal section (1b); The side-glance shape of described three annular snap (2) is " cutter " shape, and described cirque body is its handle of a knife, the sector that centered by cutter head, angle equals 120 °; Described front end card (2a) is identical with the thickness of middle card (2b), but front end card (2a) and middle card (2b) lays respectively at front-end face and ear end face for the cirque body be sleeved in axle journal section (1b) and thickness is respectively the half of front end card (2a) and middle card (2b); Equally, the cirque body on trailer card (2c) also needs to reserve to front end card (2a) and middle card (2b) on thickness to step down, and its cirque body is in the ear end face place of trailer card; By rotating described front end card (2a) and middle card (2b) can make the sector of described three annular snap (2) be stacked on same circumferential position vertically; Also the sector place of the being combined into rounding disk body at grade of described three annular snap (2) can be made.
2. rotating closed formula unilateral bolt fastener according to claim 1, it is characterized in that: be combined into rounding disk body by the sector of described three annular snap (2), described rounding disk body towards screw rod (1) threaded stem side be at one end set to for increasing frictional force resistance area.
3. rotating closed formula unilateral bolt fastener according to claim 1, is characterized in that: the threaded stem (1a) in described screw rod (1) and axle journal section (1b) are arranged for split, and are fixed connection by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310007783.1A CN103075406B (en) | 2013-01-09 | 2013-01-09 | Rotary closed type unilateral bolt fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310007783.1A CN103075406B (en) | 2013-01-09 | 2013-01-09 | Rotary closed type unilateral bolt fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103075406A CN103075406A (en) | 2013-05-01 |
| CN103075406B true CN103075406B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310007783.1A Active CN103075406B (en) | 2013-01-09 | 2013-01-09 | Rotary closed type unilateral bolt fastener |
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| CN (1) | CN103075406B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103541982B (en) * | 2013-10-29 | 2015-10-28 | 同济大学 | A kind of Nested-type single-side bolt fastener |
| CN103671447B (en) * | 2013-12-10 | 2015-07-29 | 同济大学 | A kind of split Nested-type single-side bolt fastener |
| CN104329351A (en) * | 2014-10-24 | 2015-02-04 | 东南大学 | Rotary type unfolding bolt fastener for single-side installation of component |
| CN105563100B (en) * | 2015-12-30 | 2017-10-24 | 同济大学 | Disk guide rail slide block type split Nested-type single-side bolt fastener installation tool |
| CN105626641B (en) * | 2016-02-25 | 2017-12-22 | 东南大学 | A kind of simple split assembled bolt fastener |
| CN106801695A (en) * | 2017-03-03 | 2017-06-06 | 四川东树新材料有限公司 | A kind of fastener and fastening method of unilateral low-angle flange connection |
| CN108087409B (en) * | 2017-12-01 | 2022-08-19 | 宁波金鼎紧固件有限公司 | Nested bolt fastener |
| CN108331254A (en) * | 2018-03-04 | 2018-07-27 | 天津大学 | Using unilateral bolt double steel plate composite structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0446211A (en) * | 1990-06-06 | 1992-02-17 | Shinjiyou Seisakusho:Yugen | Anchor bolt having spring |
| CN2099214U (en) * | 1991-08-08 | 1992-03-18 | 黄光泰 | One-way self-catched bolt |
| CN2639603Y (en) * | 2003-07-08 | 2004-09-08 | 马志龙 | Large force expansion tube bolt |
| JP2007198572A (en) * | 2006-01-30 | 2007-08-09 | Sanko Techno Co Ltd | Metal spreading anchor, and construction method for the same |
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- 2013-01-09 CN CN201310007783.1A patent/CN103075406B/en active Active
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| CN103075406A (en) | 2013-05-01 |
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