CN205806177U - Interfere and earless flange supporting plate self-lock nut and locking tool thereof are installed - Google Patents
Interfere and earless flange supporting plate self-lock nut and locking tool thereof are installed Download PDFInfo
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- CN205806177U CN205806177U CN201620737798.2U CN201620737798U CN205806177U CN 205806177 U CN205806177 U CN 205806177U CN 201620737798 U CN201620737798 U CN 201620737798U CN 205806177 U CN205806177 U CN 205806177U
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- elastic clip
- plug
- earless
- taper
- fluting
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Abstract
This utility model provides a kind of interference and installs earless flange supporting plate self-lock nut and locking tool thereof, and nut is hollow circular cylinder, circumferentially has boss in the middle part of outer wall, endoporus is stepped hole, two ends internal diameter is less than stage casing internal diameter, and endoporus at least one end open, other end inwall has female thread.Locking tool includes taper fluting elastic clip, compression spring, plug and spring block, described plug is nested in described taper fluting elastic clip, taper fluting elastic clip is limited between the projection of plug and spring block, and compression spring is compressed between taper fluting elastic clip unslotted one end and spring block.This utility model can improve structural reliability, reduces assembling difficulty of processing, reduces the generation of formation of crack, improves assembly precision.
Description
Technical field
The present invention relates to a kind of fastening-connecting device.
Background technology
At present, in the frame for movement in the fields such as Aeronautics and Astronautics, some veneer structures (include aluminium alloy 6061 or 7075,
Titanium alloy ti6al4v, carbon fibre composite T700/M21 etc.) oval head nut 3 and bolt can be used to be attached, connect
Structure is shown in Fig. 1, including oval head nut 3 and bolt 6, uses an oval head nut 3 and a bolt 6 by structural slab 1 He
Structural slab 22 connects.The conical surface of oval head nut 3 and the cone match placement of structural slab 2, then use staking instrument 5 staking,
Making the middle thinnest part of oval head nut 3 deform at first, form deformed region, assemble bolt 6, assembling completes.
This oval head nut connects following shortcoming:
(1) oval head nipple heads requires high, employing mould upsetting system, mould red copper electrode electric machining, therefore, and nut
Head accumulated error is big, adds the difficulty of processing of nipple heads.
(2) as shown in Fig. 1 (a), the counter sink on structural slab 2 makes the strength of materials reduce, the counter sink degree of depth and the table of the conical surface
Surface roughness is difficult to ensure, easily produces fatigue crack.
(3) the inner and outer surfaces roughness requirements at nut deformed region place is high, is difficult to ensure, drawing as shown in Fig. 2 (c)
During riveting, the deformation of deformed area is very big, is easily generated crackle.
(4) during staking, deformed area shape is freely formed, and deforms and uneven makes nut thread axis deviate, more than one
Determining during angle A ° (as shown in Figure 3), bolt 6 can not be screwed in nut 3.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of the interference to install earless flange plate nut, it is possible to carry
High structural reliability, reduces assembling difficulty of processing, reduces the generation of formation of crack, improve assembly precision.
The technical solution adopted for the present invention to solve the technical problems is: a kind of interference installs earless flange plate nut,
For hollow circular cylinder, circumferentially having boss in the middle part of outer wall, endoporus is stepped hole, and two ends internal diameter is less than stage casing internal diameter, and endoporus is at least
One end open, other end inwall is had to have female thread.
Described opening external diameter and the through hole minor diameter fit of structural slab to be assembled, with opening outer wall with to be assembled after assembling
The through-hole wall of structural slab produces the amount of interference of 4%.
The material of described hollow circular cylinder and boss is 304 rustless steels.
The present invention also provides for a kind of above-mentioned interference and installs the locking tool of earless flange plate nut, including taper fluting bullet
Property folder, compression spring, plug and spring block；Described plug is stepped cylindrical, and major diameter one end is connected spring block, minor diameter
One end circumferentially has projection, reduced diameter section sidewall to slot vertically；Described taper fluting elastic clip one end sidewall has at least
Article one, taper fluting；Described plug is nested in described taper fluting elastic clip, and taper fluting elastic clip is limited in core
Rod projection and spring block between, compression spring be compressed in taper fluting elastic clip unslotted one end and spring block it
Between；Described taper fluting elastic clip is when mandrel axis linear shrinkage, and the fluting of plug sidewall is contained by taper fluting elastic clip, cone
The external diameter of shape fluting elastic clip is less than interfering the internal diameter installing earless flange plate nut opening；Described plug one end convex
When acting the fluting one end entering taper fluting elastic clip, taper fluting elastic clip plug axis dorsad expansion, taper fluting elasticity
The external diameter of folder installs the internal diameter of earless flange plate nut opening more than interfering.
Conical surface transition is passed through between projection and the plug outer wall of described plug one end.
The material of described taper fluting elastic clip and plug is A286 high temperature alloy.
The invention has the beneficial effects as follows:
1) structural reliability is improved
Nut external cylindrical surface is the face of cylinder with the face that coordinates of structural slab endoporus, easily processes, and there is not accumulated error, and with quilt
The structural slab endoporus connected uses the interference engagement being about 4%, makes structure plate hole inwall produce suitable radial compressive stress district, carries
High structural slab fatigue strength, the most external impurity is not easily accessible both faying faces.
2) assembling difficulty of processing is reduced
The installing hole of structural slab is straight through hole, and difficulty of processing is lower than the conical surface, easily processes.
3) it is substantially reduced formation of crack
There is not large deformation district, be substantially reduced the generation of formation of crack.
4) assembly precision is improved
Nut thread axis reduces with assembling bolt thread axis runout angle A degree, is not susceptible to deviation.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of prior art, and wherein (a) is explosive view before assembling, and (b) is installation diagram；
Fig. 2 is the assembling process schematic of prior art, and wherein (a) is staking front cross sectional view, and (b) is staking process section view
Figure, (c) is that staking completes sectional view；
Fig. 3 is prior art assembling axis runout assembling schematic diagram, and the deviation angle in figure is A °；
Fig. 4 be the present invention assembling before schematic diagram, wherein (a) is assembling front view, (b) for assembling explosive view；
Fig. 5 is the assembling process schematic of the present invention, and wherein (a) is assembling front cross sectional view, and (b) is taper fluting elastic clip
In first hole completely into earless flange plate nut, (c) is that plug is axially downward, and (d) is at the beginning of plug completely disengages from
Hole, (e) is the aperture φ d to earless flange plate nut2Reaming, (f) is for assembling complete schematic diagram；
In figure, 1-structural slab one, 2-structural slab two, 3-earless flange plate nut, 4-pad, 5-staking work instrument, 6-
Bolt, 7-taper fluting elastic clip, 8-compression spring, 9-plug, 10-spring block.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings, and the present invention includes but are not limited to following enforcement
Example.
The method have the characteristics that nut external cylindrical surface is the face of cylinder with the face that coordinates of structural slab endoporus, easily process, use
The mode of machining is processed, and there is not accumulated error, and uses with connected structural slab endoporus the interference being about 4% to join
Close, make structure plate hole inwall produce suitable radial compressive stress district, improve switching performance.Structural slab assembling aperture is more than normal hole
During the φ d of footpath, one-level can be used successively to add macropore or two grades add macropore；Meanwhile, earless flange plate nut external diameter is corresponding in turn to
One-level strengthens axle or two grades of increasing axles.
The present invention includes that (major part has taper fluting elastic clip 7, pressure for earless flange plate nut and a set of assembly tool
The parts such as contracting spring 8, plug 9 and spring block 10).
Described earless flange plate nut is hollow circular cylinder, and circumferentially having boss, endoporus in the middle part of outer wall is stepped hole,
Two ends internal diameter is less than stage casing internal diameter, and endoporus at least one end open, other end inwall has female thread.
Described opening external diameter and the through hole minor diameter fit of structural slab to be assembled, with opening outer wall with to be assembled after assembling
The through-hole wall of structural slab produces the amount of interference of 4%.
Described assembly tool includes taper fluting elastic clip, compression spring, plug and spring block；Described plug is platform
Rank cylinder, major diameter one end is connected spring block, and minor diameter one end circumferentially has projection, reduced diameter section sidewall to slot vertically；
Described taper fluting elastic clip one end sidewall has at least one taper fluting；Described plug is nested in described taper and opens
In groove elastic clip, taper fluting elastic clip is limited between the projection of plug and spring block, and compression spring is compressed in cone
Between shape fluting elastic clip unslotted one end and spring block；Described taper fluting elastic clip when mandrel axis linear shrinkage, core
The fluting of rod sidewall is contained by taper fluting elastic clip, and the external diameter of taper fluting elastic clip installs earless flange supporting plate less than interfering
The internal diameter of nut opening；Described plug one end protrude out into taper fluting elastic clip fluting one end time, taper slot
Elastic clip plug axis dorsad is expanded, and the external diameter of taper fluting elastic clip installs earless flange plate nut opening more than interfering
Internal diameter.
Conical surface transition is passed through between projection and the plug outer wall of described plug one end.
Operation principle: plug 9 is "T"-shaped, the middle section of having of cylinder elongated slot (Fig. 5 (a) partial enlarged drawing A) vertically；Core
Rod 9 enters taper fluting elastic clip 7 inside after compression spring 8, and compression spring 8 remains compressive state, and taper is slotted
Both elastic clip 7 and compression spring 8 can be along the axially free slip of plugs 9 (see Fig. 4 (a)).When plug 9 is applied upwards,
When being much larger than the axial force F of now spring force (see Fig. 5 (a)), the fluting tapered end face of taper fluting elastic clip 7 is by downwards
Axial thrust load Fy, continuing to apply axial force F to plug 9, plug 9 enters in nut 3, and compression spring 8 is compressed, and taper is opened
Groove elastic clip 7 is along the conical surface radial contraction of plug 9, and when the elongated slot of plug 9 is contained by taper fluting elastic clip 7, taper is slotted
The external diameter of elastic clip 7 is less than nut inner hole φ d, and under the effect of compression spring 8, taper fluting elastic clip 7 enters the platform of nut 3
(see Fig. 5 (b)) in hole, rank.Now, plug is applied opposite force F1, the taper surface of plug 9 makes to strut taper fluting elastic clip 7 also
Making it be axially moveable, taper fluting elastic clip 7 diameter strutted is more than nut 3 diameter of bore (see Fig. 5 (c)), thus produces
It is about the amount of interference of 4%, when taper fluting elastic clip 7 end face is completely by nut inner hole diameter phi d, creates suitable radial direction
Pressure stress F2, now diameter of bore is φ d2(see Fig. 5 (d)), the surface part stress on surface is harmful, by finish reaming aperture,
Reach size φ d3(see Fig. 5 (e)) earless flange plate nut installs, and reassembles bolt 6 (see Fig. 5 (f)).
The material of described oval head nut is 304, and the material of taper fluting elastic clip and plug is A286.
The present invention uses interference engagement, by drawing the conic mandrel bar band mantle being positioned in earless flange plate nut stepped hole
Shape fluting elastic clip produces expanded radially, and amount of interference is about 4%, at both completely by the first hole φ of earless flange plate nut
After d, assemble complete.
The material of described earless flange plate nut is 304, and the material of plug and taper fluting elastic clip is A286.
The assembling of the present invention, twists the de-performance such as moment, vibration and meets NAS25027, GJB715 standard after bolts assemblies.
The assembling of the present invention uses process as shown in Figure 4, Figure 5, comprises the following steps:
The axis alignment of two structural slabs that first bore dia is φ d stacks, and earless flange plate nut is placed
On structural slab, instrument (Fig. 4 (a)) placed under.To on instrument conic mandrel bar apply axial force F (Fig. 5 (a)), plug to
In the first hole φ d of upper movement at first entrance earless flange plate nut, compression spring simultaneously, when conic mandrel bar enters into earless
While in flange plate nut hole, taper fluting elastic clip radially retraction, the diameter after taper fluting elastic clip retraction is less than
During the first hole φ d of earless flange plate nut, taper fluting elastic clip initially enters in the first hole of earless flange plate nut, directly
To completely into (Fig. 5 (b)).Again conic mandrel bar lower end is applied axial force F1(Fig. 5 (c)), conic mandrel bar moves axially downward
Dynamic, the most radially strut taper fluting elastic clip, when its diameter is more than the first hole φ d of earless flange plate nut, start to squeeze
Pressure just hole inwall, when conic mandrel bar is completely by first hole, produces suitable radial compressive stress (Fig. 5 (d)) at hole inwall, now
The aperture of earless flange plate nut is φ d2, earless flange plate nut has assembled.Remove assembly tool, to earless flange
The aperture φ d of plate nut2Reaming, hinge back aperture is φ d3(Fig. 5 (e)).Assembling bolt 6, now assembles complete (Fig. 5
(f))。
Claims (6)
1. interfere earless flange supporting plate self-lock nut be installed for one kind, it is characterised in that: for hollow circular cylinder, in the middle part of outer wall circumferentially
Having boss, endoporus is stepped hole, and two ends internal diameter is less than stage casing internal diameter, and endoporus at least one end open, other end inwall has interior spiral shell
Stricture of vagina.
The most according to claim 1 interference installs earless flange supporting plate self-lock nut, it is characterised in that: outside described opening
Footpath and the through hole minor diameter fit of structural slab to be assembled, after assembling, the through-hole wall with opening outer wall with structural slab to be assembled produces
The amount of interference of 4%.
The most according to claim 1 interference installs earless flange supporting plate self-lock nut, it is characterised in that: described hollow circuit cylinder
The material of body and boss is 304 rustless steels.
4. described in a claim 1, interfere the locking tool installing earless flange supporting plate self-lock nut, it is characterised in that:
Including taper fluting elastic clip, compression spring, plug and spring block；Described plug is stepped cylindrical, major diameter one end
Be connected spring block, and minor diameter one end circumferentially has projection, reduced diameter section sidewall to slot vertically；Described taper fluting elasticity
Folder one end sidewall has at least one taper fluting；Described plug is nested in described taper fluting elastic clip, and taper is opened
Groove elastic clip is limited between the projection of plug and spring block, and compression spring is compressed in taper fluting elastic clip unslotted
Between one end and spring block；Described taper fluting elastic clip is when mandrel axis linear shrinkage, and the fluting of plug sidewall is by taper
Fluting elastic clip contains, and the external diameter of taper fluting elastic clip is less than interfering the internal diameter installing earless flange plate nut opening；
Described plug one end protrude out into taper fluting elastic clip fluting one end time, taper fluting elastic clip plug axis dorsad
Expansion, the external diameter of taper fluting elastic clip is more than interfering the internal diameter installing earless flange plate nut opening.
The locking tool interfering installation earless flange supporting plate self-lock nut the most according to claim 4, it is characterised in that:
Conical surface transition is passed through between projection and the plug outer wall of described plug one end.
The locking tool interfering installation earless flange supporting plate self-lock nut the most according to claim 4, it is characterised in that:
The material of described taper fluting elastic clip and plug is A286 high temperature alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620737798.2U CN205806177U (en) | 2016-07-13 | 2016-07-13 | Interfere and earless flange supporting plate self-lock nut and locking tool thereof are installed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620737798.2U CN205806177U (en) | 2016-07-13 | 2016-07-13 | Interfere and earless flange supporting plate self-lock nut and locking tool thereof are installed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205806177U true CN205806177U (en) | 2016-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620737798.2U Active CN205806177U (en) | 2016-07-13 | 2016-07-13 | Interfere and earless flange supporting plate self-lock nut and locking tool thereof are installed |
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| CN (1) | CN205806177U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392570A (en) * | 2015-07-28 | 2017-02-15 | 日本电产三协株式会社 | O-shaped ring installation apparatus and method |
| CN108730302A (en) * | 2017-04-19 | 2018-11-02 | 吉博力国际股份公司 | Fixed system |
| CN109210065A (en) * | 2018-10-30 | 2019-01-15 | 贵州航瑞科技有限公司 | Titanium alloy earless plate nut and its processing method |
| CN109853670A (en) * | 2018-12-24 | 2019-06-07 | 江苏鼎达电气科技有限公司 | A kind of integrated pumping plant of water conservancy environmental protection |
-
2016
- 2016-07-13 CN CN201620737798.2U patent/CN205806177U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106392570A (en) * | 2015-07-28 | 2017-02-15 | 日本电产三协株式会社 | O-shaped ring installation apparatus and method |
| CN106392570B (en) * | 2015-07-28 | 2019-07-05 | 日本电产三协株式会社 | O-ring mounting device and O-ring installation method |
| CN108730302A (en) * | 2017-04-19 | 2018-11-02 | 吉博力国际股份公司 | Fixed system |
| CN109210065A (en) * | 2018-10-30 | 2019-01-15 | 贵州航瑞科技有限公司 | Titanium alloy earless plate nut and its processing method |
| CN109853670A (en) * | 2018-12-24 | 2019-06-07 | 江苏鼎达电气科技有限公司 | A kind of integrated pumping plant of water conservancy environmental protection |
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| GR01 | Patent grant |