CN106050866B - A kind of antifatigue structure of connector and rod-type component - Google Patents
A kind of antifatigue structure of connector and rod-type component Download PDFInfo
- Publication number
- CN106050866B CN106050866B CN201610557957.5A CN201610557957A CN106050866B CN 106050866 B CN106050866 B CN 106050866B CN 201610557957 A CN201610557957 A CN 201610557957A CN 106050866 B CN106050866 B CN 106050866B
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- Prior art keywords
- rod
- connector
- sealing space
- pressure
- cavity
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- 230000002929 anti-fatigue Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 238000005461 lubrication Methods 0.000 claims abstract description 9
- 239000010687 lubricating oil Substances 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims 1
- 206010016256 fatigue Diseases 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 9
- 230000001050 lubricating effect Effects 0.000 abstract description 4
- 235000001968 nicotinic acid Nutrition 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to the antifatigue structures of a kind of connector and rod-type component, including the connector body of rod, on the connector body of rod body of rod cavity is equipped in the one end for bearing alternate stress, connector further include with body of rod cavity formed sealing space pressure bearing head and be arranged in sealing space and with the supporting item of sealing space inner wall clearance fit, it is filled in sealing space for the fluid media (medium) of pressure-bearing lubrication, transformation is designed according to the bionics principle of trees, the connector body of rod uses the material of high tenacity, the supporting item with high pressure resistance energy and the fluid media (medium) with pressure-bearing lubricating action are added in inside, so as to reduce the Fatigue Stress Amplitude of connector root and deflection, prevent the early fatigue of connector root from destroying, increase fatigue life.In addition, connector root using the present invention, once fatigue fracture phenomenon occurs, the fluid media (medium) being sealed in it will ooze out, and so as to play a warning role, be not easy to find in advance after can effectively solving the problems, such as connector fatigue fracture.
Description
Technical field
The present invention relates to the antifatigue structures of a kind of connector and rod-type component, and in particular to a kind of fluid media (medium) pressure-bearing resists
Fatigue and the component warned in time in the early period that connector or rod-type component have crack and be not fully disconnected.
Background technology
At present, fatigue easily occurs for the tower bolt root of wind power generating set and rupture failure, and has in bolt fatigue
Crack and cannot find ahead of time when not being fully disconnected, cause the successive rupture failure of adjacent bolt, lost about between lower flange in tower
Shu Zuoyong and separate, ultimately result in the heavy losses that the tower of wind power generating set is collapsed.
On 2 28th, 2014, certain lower flange for running the tower barrel of wind generating set of nearly 6 years destroyed, and tower body collapses.It should
For flange there are about 1/4 bolt fracture, remaining bolt is unbroken.Wherein, the breaking part of corrosion most serious, bolt head knuckle
Place, should be feature fracture of the initial stage bolt by tension and compression fatigue fracture.
Once some bolt destroys, then develop one by one to both sides, such as find not in time, at the unbroken place's flange neck of bolt
（It is welding heat affected zone herein）Stress is concentrated and torn, then develops into tower body collapse accident.
In the cantilever root of tower screw rod ductile metal, because of the plastoelastic formation amount of top tension stress and lower compression stress
δ is almost suitable so that stud base's tension and compression amplification is about 2 δ, therefore, it should increase the support stiffness of stud base, Reducing distortion
Amount, prevents early fatigue from destroying.
Therefore, in order to enhance the early detection of the antifatigue intensity in the root of bolt and bolt fatigue fracture, it is necessary to tower
Cylinder screw rod is transformed.
The content of the invention
It is antifatigue it is an object of the invention to provide a kind of root and warned in time in the early period for having crack and not being fully disconnected
The component shown.
To achieve the above object, conventional attachments are transformed by connector of the invention according to trees bionics principle,
The tough and tensile firm characteristic in trees its root in violent storm is analyzed, reason bears pressure for wooden structures inside the trunk of trees should
The ability of power is stronger, and external bark has stronger tensile strength, and bark has lubricating fluid with trunk contact portion, prevents from producing
Raw internal stress, so as to have the advantages that fatigue crack-resistant.
I.e. using this principle, technical solution is connector of the present invention：Its structure includes the company that root has high tenacity
The fitting body of rod is equipped with body of rod cavity on the connector body of rod in the one end for bearing alternate stress, and connector further includes and the body of rod
Cavity forms the pressure bearing head of sealing space, and the supporting item with sealing space inner wall clearance fit, sealing are provided in sealing space
It is filled in the gap of space wall and supporting item for the fluid media (medium) of pressure-bearing lubrication.Connector using the above structure will be normal
Rule connector bears the big external high tenacity structure of tensile stress and still retains, inside is added with high pressure resistance can supporting item with
Fluid media (medium) with pressure-bearing lubricating action so as to reduce the deflection of connector root and tension and compression stress, and then reduces connection
The Fatigue Stress Amplitude and deflection of part root prevent the early fatigue of connector root from destroying, effectively reduce connector root by
The stress pair of fatigue fracture after Tensile or Compressive Loading increases fatigue life.In addition, connector root using the present invention once occurs
Fatigue fracture phenomenon, the fluid media (medium) being sealed in sealing space will ooze out, and so as to play a warning role, prevent tired with generation
The successive rupture failure of the adjacent bolt of labor break bolt, avoids causing serious accident, and it is disconnected can effectively to solve connector fatigue
The problem found in advance is not easy after splitting.
Further, pressure bearing head is equipped with to form the pressure bearing head cavity of the sealing space with body of rod cavity, this holds
The inner wall of pressure head cavity is equipped with internal thread, and the connector body of rod is equipped with the external screw thread with the screw-internal thread fit.Pass through the interior spiral shell
Line and externally threaded cooperation, had both facilitated the connection of pressure bearing head and the body of rod, were also convenient for dismounting during internal go wrong.
Further, the supporting item is pin.Pin is standard component, directly uses, carries without individually designed processing
High efficiency uses manpower and material resources sparingly.
Further, the sealing for preventing that fluid media (medium) from leaking is equipped between the pressure bearing head cavity inner wall and the connector body of rod
Part.The setting of sealing element adds sealing security, also improves the load performance of interior fluid mediums indirectly.
Further, the fluid media (medium) is lubricating oil or fat.Not only pressure-bearing, greasy property are good for lubricating oil or fat, and come
Wide, at low cost, the easy acquisition in source, can accordingly improve production efficiency.
Further, the connector body of rod is screw rod, and the pressure bearing head is nut.
A kind of technical solution of the antifatigue structure of rod-type component of the present invention is：Including the body of rod, in bearing alternation on the body of rod
One end of stress is equipped with body of rod cavity, and the antifatigue structure of rod-type component is further included forms sealing space with the body of rod cavity
Pressure bearing head, is provided with the supporting item with sealing space inner wall clearance fit in the sealing space, the sealing space inner wall with
It is filled in the gap of the supporting item for the fluid media (medium) of pressure-bearing lubrication
The antifatigue structure of rod-type component of the present invention has identical advantageous effect with connector of the present invention.
Description of the drawings
Fig. 1 show connector of the present invention and applies a kind of appearance schematic diagram on bolt；
Fig. 2 is the sectional view of bolt shown in Fig. 1；
Fig. 3 is the upper screw sectional view of bolt shown in Fig. 2；
Fig. 4 is the lower part nut sectional view of bolt shown in Fig. 2；
Fig. 5 is the internal support structure chart of bolt shown in Fig. 2.
Specific embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment of a kind of connector of the present invention, as shown in Figure 1, connector includes the connector body of rod 1 and pressure-bearing
First 4, in the embodiment of connector of the present invention, connector is bolt, and the above-mentioned connector body of rod 1 is screw rod 1, and pressure bearing head 4 is spiral shell
Cap 4, as shown in figure 3,1 bottom of above-mentioned screw rod tool, there are one body of rod cavity 11, there are one pressure-bearings as shown in figure 4,4 top of nut has
Head cavity 42, the body of rod cavity 11 and pressure bearing head cavity 42 collectively form one and are used to accommodating the close of support pin 3 and lubricating oil 2
Space is sealed, 42 side wall of pressure bearing head cavity is equipped with internal thread 41, and 1 lower end of screw rod is equipped with the external screw thread with the cooperation of above-mentioned internal thread 41
12, the sealing function to sealing space is played in the cooperation of internal thread 41 and external screw thread 12, as shown in figure 5, the shape of pin 3 with it is close
Envelope space matches and has gap, and the material of the pin 3 is resistance to compression cast iron, can increase the support strength of screw rod 1, reduces screw rod 1
Deflection, it is high filled with viscosity-temperature index and be used for pressure-bearing as shown in Fig. 2, stay gap in pin 3 and sealing space matching
The lubricating oil 2 of lubrication, which can prevent the internal stress of frictional interference generation between metal, and pass through the conical top of pin 3
31 contact with each other and carry with screw rod 1 so that lubricating oil 2 plays 1 compression position of screw rod static pressure support with Reducing distortion amount
Effect.
In the present invention applies embodiment in bolt it should be noted that：Screw rod 1 is that existing conventional stud is changed
After making or individually designed screw rod, material can be that the material of existing conventional stud can also use peculiar material, such as have
There are certain alloy or plastics of high tenacity, high intensity；Nut 4 is after being transformed to existing plain nut or individually designed
Nut, material match with screw rod.
For the present embodiment during application, the pressure in the axial direction that screw rod 1 is born is transmitted to closing sky by screw rod 1
The interior lubricating oil 2 for pressure-bearing lubrication, lubricating oil 2 act on power on the upper conical surface of the conical top 31 of pin 3, pin
3 again pass to power on nut 4, realize supporting role；Screw rod 1 bear from horizontal alternate stress eventually by screw rod 1
The deformation of portion's high-toughness material balances, and in 1 root deformation of screw rod, friction can be generated between screw rod 1 and pin 3, is also easy to produce
Stress and cause fatigue fracture, and the lubricating oil 2 in sealing space plays the role of lubrication and eliminates stress at this time, meanwhile,
Because of the 3 good rigid support of static pressure supporting role and pin of lubricating oil 2,1 root deformation amount of screw rod is reduced, is further subtracted
The small possibility of fatigue fracture.
In the other embodiment of connector of the present invention, pressure bearing head 4 or the plate without pressure bearing head cavity 42, at this point,
Corresponding body of rod cavity 11 is sufficiently large, and this structure will save the manufacturing procedure of pressure bearing head, improves efficiency；Pressure bearing head 4 is with being connected
The thread fitting of the part body of rod 1 can be replaced to be connected by the way of gluing or welding；Fluid media (medium) 2 also can be replaced lubricating grease,
Its pressure-bearing effect is more notable；3 shape of supporting item also can be replaced cylinder, its upper part rounded corner；The material of supporting item 3 can also be replaced
It is changed to measuring body aluminium alloy；To prevent external screw thread 12 and 41 fitted seal of internal thread not tight, easily in use because often rubbing against
And there is Seepage, sealing element is added on sealing surface, which can be of the prior art any kind of applicable
Seal structural part.
The antifatigue structure of rod-type component is identical with the embodiment of the antifatigue structure in each embodiment of above-mentioned connector,
Details are not described herein again.
Claims (10)
1. a kind of connector, including the connector body of rod, it is characterised in that：In bearing the one of alternate stress on the connector body of rod
End is equipped with body of rod cavity, and the connector further includes the pressure bearing head that sealing space is formed with the body of rod cavity, and the sealing is empty
It is filled in the gap of the interior supporting item being provided with sealing space inner wall clearance fit, the sealing space inner wall and supporting item
It is useful for the fluid media (medium) of pressure-bearing lubrication.
2. connector according to claim 1, it is characterised in that：The pressure bearing head is described equipped with being formed with body of rod cavity
The pressure bearing head cavity of sealing space, the inner wall of pressure bearing head cavity are equipped with internal thread, the connector body of rod be equipped with it is described
The external screw thread of screw-internal thread fit.
3. connector according to claim 1 or 2, it is characterised in that：The supporting item is pin.
4. connector according to claim 2, it is characterised in that：Between the pressure bearing head cavity inner wall and the connector body of rod
Equipped with the sealing element for preventing that fluid media (medium) from leaking.
5. connector according to claim 1, it is characterised in that：The fluid media (medium) is lubricating oil or fat.
6. connector according to claim 1, it is characterised in that：The connector body of rod is screw rod, and the pressure bearing head is
Nut.
7. a kind of antifatigue structure of rod-type component, including the body of rod, it is characterised in that：In bearing alternate stress on the body of rod
One end is equipped with body of rod cavity, and the antifatigue structure of the rod-type component is further included forms holding for sealing space with the body of rod cavity
Pressure head is provided with the supporting item with sealing space inner wall clearance fit, the sealing space inner wall and institute in the sealing space
State the fluid media (medium) being filled in the gap of supporting item for pressure-bearing lubrication.
8. the antifatigue structure of rod-type component according to claim 7, it is characterised in that：The pressure bearing head is equipped with and bar
Body cavity forms the pressure bearing head cavity of the sealing space, and the inner wall of pressure bearing head cavity is equipped with internal thread, is set on the body of rod
There is the external screw thread with the screw-internal thread fit.
9. the antifatigue structure of rod-type component according to claim 8, it is characterised in that：The pressure bearing head cavity inner wall with
The sealing element for preventing that fluid media (medium) from leaking is equipped between the connector body of rod.
10. the antifatigue structure of rod-type component according to claim 7, it is characterised in that：The fluid media (medium) is lubrication
Oil or fat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610557957.5A CN106050866B (en) | 2016-07-15 | 2016-07-15 | A kind of antifatigue structure of connector and rod-type component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610557957.5A CN106050866B (en) | 2016-07-15 | 2016-07-15 | A kind of antifatigue structure of connector and rod-type component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050866A CN106050866A (en) | 2016-10-26 |
| CN106050866B true CN106050866B (en) | 2018-05-18 |
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ID=57187580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610557957.5A Active CN106050866B (en) | 2016-07-15 | 2016-07-15 | A kind of antifatigue structure of connector and rod-type component |
Country Status (1)
| Country | Link |
|---|---|
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381930A (en) * | 2018-02-08 | 2018-08-10 | 何国业 | Connecting pole and its manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201373010Y (en) * | 2009-03-17 | 2009-12-30 | 谢智庆 | Spiro-union element with anti-rust effect |
| CN103453000A (en) * | 2012-05-29 | 2013-12-18 | 中国航空工业集团公司西安飞机设计研究所 | Safety bolt with blind hole |
| CN103470600A (en) * | 2013-09-25 | 2013-12-25 | 吴江骏达电梯部件有限公司 | Anti-rust screw with oil storage inner cavity |
| CN204267474U (en) * | 2015-01-21 | 2015-04-15 | 苏州市吴中区光福金凤五金厂 | One imitates bolt entirely |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8465241B2 (en) * | 2007-10-31 | 2013-06-18 | The Boeing Company | Composite fasteners containing multiple reinforcing fiber types |
-
2016
- 2016-07-15 CN CN201610557957.5A patent/CN106050866B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201373010Y (en) * | 2009-03-17 | 2009-12-30 | 谢智庆 | Spiro-union element with anti-rust effect |
| CN103453000A (en) * | 2012-05-29 | 2013-12-18 | 中国航空工业集团公司西安飞机设计研究所 | Safety bolt with blind hole |
| CN103470600A (en) * | 2013-09-25 | 2013-12-25 | 吴江骏达电梯部件有限公司 | Anti-rust screw with oil storage inner cavity |
| CN204267474U (en) * | 2015-01-21 | 2015-04-15 | 苏州市吴中区光福金凤五金厂 | One imitates bolt entirely |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106050866A (en) | 2016-10-26 |
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