CN106438644A - Eccentric torsional shear damage type self-fixing single-side bolt fastener - Google Patents
Eccentric torsional shear damage type self-fixing single-side bolt fastener Download PDFInfo
- Publication number
- CN106438644A CN106438644A CN201610963884.XA CN201610963884A CN106438644A CN 106438644 A CN106438644 A CN 106438644A CN 201610963884 A CN201610963884 A CN 201610963884A CN 106438644 A CN106438644 A CN 106438644A
- Authority
- CN
- China
- Prior art keywords
- bolt
- eccentric
- fastener
- fixed cover
- type self
- 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.)
- Granted
Links
- 238000009434 installation Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 2
- 238000010008 shearing Methods 0.000 description 6
- 238000011900 installation process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
-
- 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention relates to an eccentric torsional shear damage type self-fixing single-side bolt fastener. The eccentric torsional shear damage type self-fixing single-side bolt fastener comprises a bolt (2), a split type gasket (3) and a nut (6), wherein the bolt (2) is a single-side bolt. The fastener further comprises an eccentric gasket (5) and a fixing sleeve (7); an outer circle of the eccentric gasket (5) is polygonal, and an inner circle of the eccentric gasket (5) is circular; the diameter of the inner circle is more than the outside diameter of a bolt rod; a step type inserting pin (51) is arranged at the inner ring; a key slot (21) in match with the step type inserting pin (51) is formed in the bolt rod; the inner circle of the fixing sleeve (7) is polygonal and is in match with the outer circle of the eccentric gasket (5); an actuating arm (71) is arranged at the outer circle of the fixing sleeve (7). Compared with the prior art, the eccentric torsional shear damage type self-fixing single-side bolt fastener has the advantages that the bolt rod provided with the key slot is matched with the eccentric gasket, and meanwhile, the fixing sleeve is additionally arranged, so as to circumferentially clamp the fastener to the surrounding fixing end, and thus the circumference that the whole fastener slips while a wrench is used for pinching the nut can be prevented.
Description
Technical field
The present invention relates to a kind of structural member that can be used for connects the bolt fastener carrying out monolateral installation in fastening, especially relate to
And a kind of eccentric torsion cut damage type self-retaining unilateral bolt fastener, belong to civil construction project, mechanical assembly technique field.
Background technology
Currently in civil construction and mechanical erection field, the installation requirements amount that structural member is connected with fastening is big.Just at present
For the bolt commonly using, when implementing to connect terminal operation to component, staff needs simultaneously in the operation of component both sides,
It is still not good implementation method for monolateral mounting means.This method for fastening connection structure is simple and convenient to operate, carries
Good, but be only applicable in opening section component, in some special occasions, such as to closed cross-section member or inconvenience in addition
When the component of side operation is attached fastening, just cannot use this conventional bolt and nut method for fastening connection.And it is current
Monolateral bolt product accordingly is not had on domestic market it has been disclosed that Patents or excessive or bolt are weakened to shank of bolt
Head stress point is very few, the existing similar products in overseas market, but above-mentioned existing patent or product are all difficult in erection stage to bolt
Apply larger pretension to form friction-type bolt joint, the comprehensive mechanical property that it carries is unsatisfactory, in building
It is very limited in seismic design of structures application.
It is that (grant number is a kind of split Nested-type single-side bolt fastener that applicant has obtained mandate national inventing patent
103671447B), this patent can achieve one side operation, the connection completing structural member and fastening.In general mounting means, directly
Electric wrench sleeve is connected with nut it is impossible to ensure that bolt does not rotate.When bolt rotates, bolt with split type
The frictional force existing between pad can lead to split type pad to occur sliding to rotate it is impossible to make several pieces of pads be uniformly distributed and make
Unbalance stress.When contact friction force when between pad and connector is not enough simultaneously, bolts and nuts are easy to rotate together,
The torque value being unable to reach setting completes installment work.
The patent of Application No. 2015108219651 discloses a kind of electronic installation of split Nested-type single-side bolt fastener
Instrument, for installing split Nested-type single-side bolt fastener, this instrument includes main body and is arranged on the input mechanism in main body
And output mechanism, described output mechanism includes output shaft inner sleeve and is set in its outside output shaft outer sleeve, described
Output shaft overcoat drum outer wall is provided with the first gear being connected with input mechanism engagement, and described output shaft inner sleeve is fixed on main body
On, during installation, output shaft outer sleeve is connected with nut, output shaft inner sleeve and bolt connection, input mechanism rotation by the
One gear driven output shaft outer sleeve rotates, and so that output shaft inner sleeve and output shaft outer sleeve is produced relative rotation, so that spiral shell
Screw bolt and nut relatively rotates.
But this patent still needs to be improved in actual use, mentality of designing is to be set from installation tool simultaneously
Meter, can lead to single unit system complex, inconvenient operation unavoidably.
Content of the invention
The purpose of the present invention is exactly to overcome the defect of above-mentioned prior art presence to provide one kind can effectively keep spiral shell
Bolt is fixed, structure simple, and eccentric torsion cuts damage type self-retaining unilateral bolt fastener.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of eccentric torsion cuts damage type self-retaining unilateral bolt fastener, including bolt, split type pad and nut, described
Bolt be monolateral bolt, described securing member also includes eccentric washer and fixed cover, and described eccentric washer outer ring is polygon
Shape, inner ring is circle, and inner ring diameter is more than shank of bolt external diameter, and inner ring is provided with step latch, shank of bolt be provided with described
The keyway of step latch cooperation, described fixed cover inner ring is the polygon mating with eccentric washer outer ring, fixed cover outer ring
With the arm of force,
During use, bolt and split type pad are loaded attaching plate elements, eccentric washer bias is inserted on shank of bolt, by platform
Stepwise latch is connected with keyway, then fixed cover is enclosed within eccentric washer outer ring, and the arm of force of fixed cover is stuck in neighbouring fixation
End, nut is mounted on shank of bolt, during nut is tightened, fixed cover blocks eccentric washer, so that eccentric pad
Piece hinders bolt with nut rotation.Continuing to increase with moment of torsion, the shearing force suffered by latch in eccentric washer constantly increases.
When its circumferential shearing force reaches the limit stress of material, latch is broken by torsion and breaks down, thus reaching the pre-fastening moment of setting,
Complete the installation of securing member.Latch is filled up in the keyway of shank of bolt so as to the intensity of entirety is not affected simultaneously.
Preferably, described shank of bolt has one section at bolt head is not threaded smooth face, and described keyway is opened in
Light face.
Preferably, described fixed cover inner ring be with eccentric washer outer ring be hexagon.
Preferably, described step latch is in prismatic.
Preferably, the length of described step latch is more than the depth of keyway.
Described securing member also includes sleeve, and described sleeve outer diameter is less than the installation aperture of attaching plate elements, and internal diameter is more than
Shank of bolt external diameter, during installation, sleeve is placed in installation in the hole.
Compared with prior art, the present invention has advantages below：
(1) securing member of the present invention is set about from bolt fastener direction, is optimized design to shank of bolt and pad.Using containing
Keyway shank of bolt and eccentric washer, this securing member is while using most basic electric wrench, it is possible to achieve monolateral installation,
Under conditions of ensureing that uniform force intensity meets, reach in the case that holding shank of bolt maintains static and tightened nut, that is, realized
The requirement of bolt fastener self-retaining.The functional realiey of self-retaining is mainly cooperated with shank of bolt by eccentric washer, with
When in addition fixed cover by securing member circumference be stuck in around fixing end it is therefore prevented that screw up with a wrench nut when integral fastener skidding feelings
The generation of condition.
(2) eccentric washer outer ring is hexagonal, loop-shaped and eccentric washer outer ring form fit in fixed cover, and with anti-
The arm of force.The counter-force arm design that the counter-force arm configuration of fixed cover matches when using with reference to common electric spanner, can be with eccentric washer
When rotating, overall structure is circumferentially fixed, it is stuck on the bolt fastener of side installation.
(3) shank of bolt has one section at bolt head is not threaded smooth face, and keyway is opened in light face it is ensured that shank of bolt is twisted
The integrality of screw thread at jack panel.
(4) step latch is in prismatic, will not rotate wherein, make eccentric washer and shank of bolt after latch insertion keyway
It is relatively fixed.
(5) length of step latch is more than the depth of keyway, can make eccentric washer and shank of bolt concentric fits.
Brief description
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is embodiment of the present invention installation process axial arrangement schematic diagram；
Fig. 3 is embodiment of the present invention installation process schematic diagram；
Fig. 4 installs the unilateral bolt fastener schematic diagram after terminating for the embodiment of the present invention；
Reference：
1 is attaching plate elements；2 is bolt；21 is keyway；3 is split type pad；4 is sleeve；5 is eccentric washer；51 is platform
Stepwise latch；6 is nut；7 is fixed cover；71 is the arm of force.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention be not limited to
Following embodiments.
Embodiment
As shown in figure 1, a kind of eccentric torsion cuts damage type self-retaining unilateral bolt fastener, described device is by split type pad
3rd, contain keyway 21 bolt 2, sleeve 4, eccentric washer 5, nut 6 and fixed cover 7 to form.Eccentric washer 5 inner ring diameter is more than spiral shell
Tightening latch external diameter, simultaneously pad inner ring be provided with step latch 51.The shank of bolt containing keyway 21 bolt 2 is provided with and step latch 51
The keyway 21 cooperating.The inner ring of fixed cover 7 is cooperated with eccentric washer 5 outer-hexagonal structure, prevents it from rotating.
During installation, eccentric washer 5 bias is inserted on shank of bolt, by the step latch 51 and shank of bolt on pad
Keyway 21 cooperate so that pad and shank of bolt concentric fits.Manually nut 6 is screwed on shank of bolt, fixed cover 7 is enclosed within
Eccentric washer 5 outer ring, blocks nigh fixing end simultaneously.In the general monolateral installation process of securing member, when screw-down torque relatively
When big, during nut tightened by electric wrench, nut can be made to drive bolt to rotate together, that is, securing member integrally occurs to beat
Slide it is impossible to tighten thus the pretightning force not reaching requirement requires.The present embodiment securing member, in installation process, works as integral fastener
Occur to skid when rotating, shank of bolt is connected with the latch of eccentric washer 5 by keyway 21, eccentric washer 5 outer ring and fixed cover 7 phase
Cooperation, the arm of force 71 of fixed cover 7 is stuck in fixing end nearby, thus its circumferential rotational motion is in bond, therefore bolt part is being beaten
Sliding phenomenon can ensure that circumferentially fixed motionless after occurring.Continuing to increase with moment of torsion, the step latch 51 in eccentric washer 5
Suffered shearing force constantly increases.When its circumferential shearing force reaches the limit stress of material, step latch 51 is cut by torsion
Destroying, thus reaching the pre-fastening moment of setting, completing the installation of securing member.Step latch 51 is filled up in shank of bolt simultaneously
So as to the intensity of entirety is not affected in keyway 21.
Eccentric washer 5 inner ring diameter is more than shank of bolt external diameter, and pad inner ring is provided with step latch 51 simultaneously.During installation,
The relative position of latch is to install the inner side in aperture, and this is to ensure that the keyway 21 with latch cooperation is not opened in and tightens nut
It is ensured that the integrality of screw thread at nut tightened by shank of bolt at bolt thread.
As preferred version, the length of step latch is more than the depth of keyway it is ensured that eccentric washer 5 and shank of bolt
Between gap uniformity, that is, be further ensured that the concentric fits of the two；The bolt 2 containing keyway 21 is provided with keyway 21 in bolt shank,
Keyway 21 is cooperated with the step latch 51 of eccentric washer 5.The position of shank of bolt keyway 21 is partial to install aperture simultaneously
Inner side, does not interfere with the integrality of screw thread at nut and bolt cooperation.
Fixed cover 7 inner ring is hexagon, cooperates with the hexagon outer ring of eccentric washer 5 it is ensured that both circumferences are mutual
Fixing.It is provided with counter-force arm 71 outside fixed cover 7, the fixing end near side can be stuck in, when integral fastener occurs to skid,
Counter-force is provided to prevent its rotation.
As shown in figs. 2 to 4, carry out split Nested-type single-side bolt fastener installation process using the present embodiment as follows：
1st, applicant has applied for a patent a kind of deformation retract from replying split type pad and its installation tool, applies this special
The method discussed in profit is installed to split pad.The method utilizes the collapsible deformation of split type pad stress, and removes
The characteristic of original state can be automatically replied so as to by relatively narrow and small connector installing hole, and can return in connector opposite side after power
Restore shape, thus realizing the unilateral installation of split pad；
2nd, complete the installation of pad, sleeve is inserted between shank of bolt and attaching plate elements.During installation, eccentric washer is inclined
The heart is inserted on shank of bolt, the keyway 21 on the step latch 51 on pad and shank of bolt is cooperated so that pad with
Shank of bolt concentric fits.Manually nut 6 is screwed on shank of bolt, fixed cover 7 is enclosed within eccentric washer 5 outer ring, be stuck in simultaneously near
Fixing end.
Start electric wrench, moment loading is on nut 6.Screw-down torque drives nut rotation, if nut bolt screw thread
The moment of friction that moment of friction between pair is contacted with plate and nut more than pad, integral fastener can occur to skid and rotate.
Shank of bolt is connected with the latch of eccentric washer 5 by keyway 21, and matched with fixed cover 7 in eccentric washer 5 outer ring, fixed cover 7
The arm of force 71 is stuck in fixing end nearby, thus its circumferential rotational motion is in bond, therefore bolt part can after skidding generation
Circumferentially fixed motionless to ensure.Continuing to increase with moment of torsion, the shearing force suffered by latch in eccentric washer 5 constantly increases.
When its circumferential shearing force reaches the limit stress of material, latch is broken by torsion and breaks down, thus reaching the pre-fastening moment of setting,
Complete the installation of securing member.Latch is filled up in the keyway 21 of shank of bolt so as to the intensity of entirety is not affected simultaneously.
Claims (6)
1. a kind of eccentric torsion cuts damage type self-retaining unilateral bolt fastener, including bolt (2), split type pad (3) and nut
(6), described bolt (2) is monolateral bolt it is characterised in that described securing member also includes eccentric washer (5) and fixed cover
(7), described eccentric washer (5) outer ring is polygon, and inner ring is circle, and inner ring diameter is more than shank of bolt external diameter, and inner ring is provided with
Step latch (51), shank of bolt is provided with the keyway (21) coordinating with described step latch (51), described fixed cover
(7) inner ring is the polygon mating with eccentric washer (5) outer ring, and fixed cover (7) outer ring carries the arm of force (71),
During use, bolt (2) and split type pad (3) are loaded attaching plate elements (1), eccentric washer (5) bias is inserted in bolt
On bar, step latch (51) is connected with keyway (21), then fixed cover (7) is enclosed within eccentric washer (5) outer ring, fixed cover
(7) the arm of force (71) is stuck in neighbouring fixing end, nut (6) is mounted on shank of bolt, the process being tightened in nut (6)
In, fixed cover (7) blocks eccentric washer (5), so that eccentric washer (5) hinders bolt (2) to rotate with nut (6).
2. a kind of eccentric torsion according to claim 1 cuts damage type self-retaining unilateral bolt fastener it is characterised in that institute
It is not threaded smooth face that the shank of bolt stated has one section at bolt head, and described keyway (21) is opened in light face.
3. a kind of eccentric torsion according to claim 1 cuts damage type self-retaining unilateral bolt fastener it is characterised in that institute
Fixed cover (7) inner ring stated is and eccentric washer (5) outer ring is hexagon.
4. a kind of eccentric torsion according to claim 1 cuts damage type self-retaining unilateral bolt fastener it is characterised in that institute
The step latch (51) stated is in prismatic.
5. a kind of eccentric torsion according to claim 1 cuts damage type self-retaining unilateral bolt fastener it is characterised in that institute
The length of the step latch (51) stated is more than the depth of keyway (21).
6. a kind of eccentric torsion according to claim 1 cuts damage type self-retaining unilateral bolt fastener it is characterised in that institute
The securing member stated also includes sleeve (4), and described sleeve (4) external diameter is less than the installation aperture of attaching plate elements (1), and internal diameter is more than spiral shell
Tightening latch external diameter, during installation, sleeve (4) is placed in installation in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963884.XA CN106438644B (en) | 2016-11-04 | 2016-11-04 | A kind of eccentric turn round cuts damage type self-retaining unilateral bolt fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963884.XA CN106438644B (en) | 2016-11-04 | 2016-11-04 | A kind of eccentric turn round cuts damage type self-retaining unilateral bolt fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106438644A true CN106438644A (en) | 2017-02-22 |
| CN106438644B CN106438644B (en) | 2018-06-29 |
Family
ID=58180914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610963884.XA Active CN106438644B (en) | 2016-11-04 | 2016-11-04 | A kind of eccentric turn round cuts damage type self-retaining unilateral bolt fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438644B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757696A (en) * | 2018-05-31 | 2018-11-06 | 邓晓明 | A kind of screw bolt and nut fastening assembly of never becoming loose |
| CN110792662A (en) * | 2019-11-21 | 2020-02-14 | 天津英创汇智汽车技术有限公司 | Unidirectional assembling fastening bolt for fastening and connecting thin plates |
| CN111425512A (en) * | 2020-05-08 | 2020-07-17 | 广西玉柴机器股份有限公司 | Anti-loosening bolt and nut assembly |
| CN113931915A (en) * | 2020-07-13 | 2022-01-14 | 黄子源 | Bolt for movable connection |
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| US20050084361A1 (en) * | 2003-10-20 | 2005-04-21 | Fly David E. | Alignment pin and fastener with bi-directional clamping |
| CN203176131U (en) * | 2013-04-19 | 2013-09-04 | 黄供平 | Lock washer and connecting part and connected part using lock washer |
| CN103615458A (en) * | 2013-11-21 | 2014-03-05 | 同济大学 | Eccentric-rotating-type unilateral bolt fastening member |
| CN103671447A (en) * | 2013-12-10 | 2014-03-26 | 同济大学 | Split nest type unilateral bolt fastener |
| CN204041699U (en) * | 2014-06-13 | 2014-12-24 | 陕西飞机工业（集团）有限公司 | A kind of metal lock washer |
| CN105328650A (en) * | 2015-11-24 | 2016-02-17 | 同济大学 | Electric mounting tool for split nested one-sided bolt fastener |
| CN105626641A (en) * | 2016-02-25 | 2016-06-01 | 东南大学 | Simple and split assembling type bolt fastening piece |
-
2016
- 2016-11-04 CN CN201610963884.XA patent/CN106438644B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050084361A1 (en) * | 2003-10-20 | 2005-04-21 | Fly David E. | Alignment pin and fastener with bi-directional clamping |
| CN203176131U (en) * | 2013-04-19 | 2013-09-04 | 黄供平 | Lock washer and connecting part and connected part using lock washer |
| CN103615458A (en) * | 2013-11-21 | 2014-03-05 | 同济大学 | Eccentric-rotating-type unilateral bolt fastening member |
| CN103671447A (en) * | 2013-12-10 | 2014-03-26 | 同济大学 | Split nest type unilateral bolt fastener |
| CN204041699U (en) * | 2014-06-13 | 2014-12-24 | 陕西飞机工业（集团）有限公司 | A kind of metal lock washer |
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| CN105626641A (en) * | 2016-02-25 | 2016-06-01 | 东南大学 | Simple and split assembling type bolt fastening piece |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757696A (en) * | 2018-05-31 | 2018-11-06 | 邓晓明 | A kind of screw bolt and nut fastening assembly of never becoming loose |
| CN110792662A (en) * | 2019-11-21 | 2020-02-14 | 天津英创汇智汽车技术有限公司 | Unidirectional assembling fastening bolt for fastening and connecting thin plates |
| CN111425512A (en) * | 2020-05-08 | 2020-07-17 | 广西玉柴机器股份有限公司 | Anti-loosening bolt and nut assembly |
| CN113931915A (en) * | 2020-07-13 | 2022-01-14 | 黄子源 | Bolt for movable connection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106438644B (en) | 2018-06-29 |
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