CN109973506A - A kind of bolt fastening structure and its modeling method with lock washer - Google Patents
A kind of bolt fastening structure and its modeling method with lock washer Download PDFInfo
- Publication number
- CN109973506A CN109973506A CN201910268226.2A CN201910268226A CN109973506A CN 109973506 A CN109973506 A CN 109973506A CN 201910268226 A CN201910268226 A CN 201910268226A CN 109973506 A CN109973506 A CN 109973506A
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- bolt
- lock washer
- cantilever beam
- contact surface
- hole
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000006467 substitution reaction Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004088 simulation Methods 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
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Abstract
The invention discloses a kind of bolt fastening structure and its modeling method with lock washer, including long cantilever beam, short cantilever beam, connection bolt and lock washer, one end of the long cantilever beam offers the first fixation hole, the other end of long cantilever beam offers the first bolt hole, one end of the short cantilever beam offers the second fixation hole, the other end of short cantilever beam offers the second bolt hole, and the lock washer includes upper gasket and lower gasket, and the center of upper gasket and lower gasket offers through-hole.Bolt fastening structure and its modeling method proposed by the present invention with lock washer, first snap-latch surface and the second snap-latch surface surface are equipped with wedge-shaped self-locking structure, first snap-latch surface and the engagement connection of the second snap-latch surface, it prevents from skidding, it is connected firmly, in order to simplify the more complex lock washer of structure, according to thin-layer element method, the first contact surface and the second contact surface are subjected to equivalent substitution with approximate thin layer.
Description
Technical field
The present invention relates to bolt assembly technology field, in particular to a kind of bolt fastening structure with lock washer and its build
Mould method.
Background technique
Be bolted, standard simple with structure because of it is unified, convenient for assembly and that maintenance and connection are safe and reliable etc. is many
Advantage has extremely wide application with various fields such as automobile, aerospace and electric power energies mechanical.Simultaneously as spiral shell
The connection of bolt itself, and made it the main source of non-linear factor in total.It is bolted performance meeting
Structure overall dynamics performance is influenced, and influences to be bolted the factor of performance mainly to include bolt pretightening, contact surface surface shape
Looks and bolt assembly number and assembly technology, in order to probe into factors above to the dynamic (dynamical) influence of bolt, many scholars are logical
The modal parameter (rigidity, damping and intrinsic frequency) for crossing research bolt joint surface is bolted characteristic to study, and passes through these
Characteristic dissipates come the dynamic response and system capacity for indicating bolt fastening structure.The existing bolt by establishing two connectors connects
The method of binding structure probes into influence of the bolt pretightening to the dynamic characteristic (intrinsic frequency) of the structure, only considered contact surface
The case where being plane, not using special contact surface as research object.
Summary of the invention
Invention is designed to provide a kind of bolt fastening structure and its modeling method with lock washer, can simplify anti-
Loose gasket construction facilitates modeling and analysis, crosses finite element simulation and has probed into bolt pretightening to the bolt company with lock washer
The influence of the dynamic characteristic (intrinsic frequency) of binding structure, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of bolt fastening structure with lock washer, packet
Long cantilever beam, short cantilever beam, connection bolt and lock washer are included, one end of the long cantilever beam offers the first fixation hole, long
The other end of cantilever beam offers the first bolt hole, and one end of the short cantilever beam offers the second fixation hole, short cantilever beam
The other end offers the second bolt hole, and the lock washer includes upper gasket and lower gasket, and the center of upper gasket and lower gasket is equal
Offer through-hole, upper gasket and the adjacent side of lower gasket are connected separately with the first snap-latch surface and the second snap-latch surface, upper gasket and
The opposite side of lower gasket is respectively equipped with the first contact surface and the second contact surface, and the first contact surface and long cantilever beam are close to the first spiral shell
One end of keyhole connects, and the second contact surface connects with short cantilever beam close to one end of the second bolt hole, and the connection bolt is successively
Through the second bolt hole, through-hole and the first fixation hole, and the upper end for connecting bolt is engaged by nut.
Preferably, first contact surface and the second contact surface are nonplanar structure.
Preferably, first bolt hole and the second bolt hole with connect bolt engagement.
Preferably, first snap-latch surface and the second snap-latch surface surface are equipped with wedge-shaped self-locking structure, the first snap-latch surface and the
The engagement of two snap-latch surfaces.
Preferably, the connection bolt is M8 screw rod.
The present invention provides another technical solution are as follows: a kind of modeling method of the bolt fastening structure with lock washer, packet
Include following steps:
S1: it establishes entity: establishing beam type bolt arrangement threedimensional model with 3 d modeling software SolidWorks；
S2: define solid material: respectively long cantilever beam, short cantilever beam, connection bolt and lock washer progress entity are fixed
The material properties of justice, long cantilever beam, short cantilever beam and lock washer are handled according to No. 45 steel, density 7850kg/m3, elasticity
Modulus is 210Gpa, and Poisson's ratio 0.3, solid element is using C3D8R unit；
S3: it defines assembly relation: the first contact surface and the second contact surface being subjected to equivalent substitution with approximate thin layer, by before
Practical anti-loosening gasket structure in the structure adds the structure of lock washer to carry out equivalent substitution with the thin layer after equivalent；
S4: setting analysis step and output variable: change connection bolt load size, export the intrinsic frequency of mode of flexural vibration；
S5: it defines contact type: the contact between each contact surface is set, and coefficient of friction takes 0.15；
S6: setting boundary condition and load: all freedom degrees of long cantilever beam end are constrained, in a certain of screw rod
Apply bolt load on section, using single-sweep polarograpy, frequency analysis step is solved；
S7: grid division: establishing reference axis, and Y-axis is intrinsic frequency, and unit Hz, X-axis is pretightning force, unit N；
S8: submitting and monitoring model: extracting the intrinsic frequency of the first six rank mode of flexural vibration of different pretightning force flowering structures；
S9: checking output, analyzes result: with the increase of thin layer elasticity modulus, the corresponding intrinsic frequency of structure is in be incremented by
Gesture.
Compared with prior art, the beneficial effects of the present invention are: the bolted-on attachment proposed by the present invention with lock washer
Structure and its modeling method, lock washer include upper gasket and lower gasket, and the first snap-latch surface and the second snap-latch surface surface are equipped with wedge shape
Self-locking structure, the first snap-latch surface and the engagement connection of the second snap-latch surface, prevent from skidding, be connected firmly, more complex in order to simplify structure
Lock washer the first contact surface and the second contact surface are subjected to equivalent substitution with approximate thin layer, passed through according to thin-layer element methods
Change the elasticity modulus of thin layer, simulated extraction structure can be incited somebody to action in the intrinsic frequency of the first six rank mode of flexural vibration of different pretightning forces
Complicated anti-loosening gasket structure is simplified, and modeling and analysis are facilitated, also for this between tooth lock washer and cantilever beam
The modeling of the special contact surface of sample provides a kind of feasible method.
Detailed description of the invention
Fig. 1 is overall structure figure of the invention；
Fig. 2 is lock washer installation diagram of the invention；
Fig. 3 is lock washer explosive view of the invention；
Fig. 4 is thin layer connection structure diagram of the invention；
Fig. 5 is thin layer connection side view of the invention；
Fig. 6 is modeling procedure figure of the invention；
Fig. 7 is second order data table of the invention；
Fig. 8 is three rank tables of data of the invention；
Fig. 9 is quadravalence tables of data of the invention；
Figure 10 is five rank tables of data of the invention.
In figure: 1, long cantilever beam；11, the first fixation hole；12, the first bolt hole；2, short cantilever beam；21, the second fixation hole；
22, the second bolt hole；3, bolt is connected；4, lock washer；41, upper gasket；411, through-hole；412, the first snap-latch surface；413,
One contact surface；42, lower gasket；421, the second snap-latch surface；422, the second contact surface；5, thin layer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-10, a kind of bolt fastening structure with lock washer, including long cantilever beam 1, short cantilever beam 2, company
Connecting bolt 3 and lock washer 4, one end of long cantilever beam 1 offer the first fixation hole 11, and the other end of long cantilever beam 1 offers
First bolt hole 12, one end of short cantilever beam 2 offer the second fixation hole 21, and the other end of short cantilever beam 2 offers the second spiral shell
Keyhole 22, the first fixation hole 11 and the second fixation hole 21 are respectively used to installation long cantilever beam 1 and short cantilever beam 2, the first bolt hole
12 and second bolt hole 22 for connecting long cantilever beam 1 and short cantilever beam 2, lock washer 4 includes upper gasket 41 and lower gasket 42,
The center of upper gasket 41 and lower gasket 42 offers through-hole 411, and through-hole 411 is for installing connection bolt 3, and upper gasket 41 is under
The adjacent side of washer 42 is connected separately with the first snap-latch surface 412 and the second snap-latch surface 421, the first snap-latch surface 412 and the second card
421 surface of conjunction face is equipped with wedge-shaped self-locking structure, the first snap-latch surface 412 and the engagement connection of the second snap-latch surface 421, prevents pine of skidding
It is dynamic, it is completely embedded, upper gasket 41 and the opposite side of lower gasket 42 are respectively equipped with the first contact surface 413 and the second contact surface 422,
First contact surface 413 and the second contact surface 422 are nonplanar structure, and the first contact surface 413 and the second contact surface 422 are modeling
The research object of research, the first contact surface 413 connect with long cantilever beam 1 close to one end of the first bolt hole 12, the second contact surface
422 connect with short cantilever beam 2 close to one end of the second bolt hole 22, and connection bolt 3 is M8 screw rod, and Modeling Research Data Data is built
It stands under the premise of the M8 screw rod, connection bolt 3 sequentially passes through the second bolt hole 22, through-hole 411 and the first fixation hole 11, and even
The upper end of connecting bolt 3 is engaged by nut, the first bolt hole 12 and the second bolt hole 22 with the first bolt hole 12 and the second spiral shell
Keyhole 22 matches, the first bolt hole 12 and the second bolt hole 22 with connect the engagement of bolt 3 and connect.
In order to preferably show the modeling method of the bolt fastening structure with lock washer, it is anti-that the present embodiment provides a kind of bands
The modeling method of the bolt fastening structure of loose washer, includes the following steps:
Step 1: it establishes entity: establishing beam type bolt arrangement threedimensional model with 3 d modeling software SolidWorks；
Step 2: define solid material: be respectively long cantilever beam 1, short cantilever beam 2, connection bolt 3 and lock washer 4 into
The material properties of row substantial definition, long cantilever beam 1, short cantilever beam 2 and lock washer 4 are handled according to No. 45 steel, and density is
7850kg/m3, elasticity modulus 210Gpa, Poisson's ratio 0.3, solid element use C3D8R unit, and connection bolt 3 is M8 spiral shell
Bar；
Step 3: assembly relation is defined:, will according to 5 elements method of thin layer in order to simplify the more complex lock washer 4 of structure
First contact surface 413 and the second contact surface 422 carry out equivalent substitution with approximate thin layer 5, wherein the elasticity modulus of thin layer 5 is logical
The rigidity solving model for establishing lock washer 4 is crossed, according to the relationship of pretightning force and deformationThe rigidity of thin layer 5 is calculated, then
By formulaBe calculated, by pre-structure in thin layer 5 plus lock washer of 4 structure of practical lock washer after equivalent
4 structure carries out equivalent substitution, and the first snap-latch surface 412 and the second snap-latch surface 421 remain unchanged；
Step 4: setting analysis step and output variable: change connection 3 magnitude of load of bolt (2000N~9000N, every increase
1000N exports a variable), export the intrinsic frequency of mode of flexural vibration；
Step 5: it defines contact type: the contact between each contact surface is set, and coefficient of friction takes 0.15；
Step 6: setting boundary condition and load: all freedom degrees of 1 end of long cantilever beam are constrained, in screw rod
A certain section on apply bolt load, using single-sweep polarograpy, frequency analysis step is solved；
Step 7: grid division: establishing reference axis, and Y-axis is intrinsic frequency, and unit Hz, X-axis is pretightning force, unit N；
Step 8: submitting and monitoring model: extracting the intrinsic frequency of the first six rank mode of flexural vibration of different pretightning force flowering structures；
Step 9: checking output, analyzes result: with the increase of 5 elasticity modulus of thin layer, the corresponding intrinsic frequency of structure is presented
Increasing trend, in the present solution, the first six rank mode of flexural vibration of structure is consolidated when having calculated separately 5 thickness hs of thin layer=0.1mm~0.8mm
There is frequency, is closer to when 5 thickness of thin layer takes 0.8mm with result required by unreduced structure by comparative analysis.
In conclusion the bolt fastening structure and its modeling method proposed by the present invention with lock washer, lock washer 4 is wrapped
Upper gasket 41 and lower gasket 42 are included, the first snap-latch surface 412 and 421 surface of the second snap-latch surface are equipped with wedge-shaped self-locking structure, the first card
Conjunction face 412 and the engagement connection of the second snap-latch surface 421, prevent from skidding, be connected firmly, in order to simplify the more complex lock washer of structure
4, according to 5 elements method of thin layer, the first contact surface 413 and the second contact surface 422 are subjected to equivalent substitution with approximate thin layer 5, passed through
Change the elasticity modulus of thin layer 5, simulated extraction structure can be incited somebody to action in the intrinsic frequency of the first six rank mode of flexural vibration of different pretightning forces
Complicated 4 structure of lock washer is simplified, and modeling and analysis is facilitated, also for between tooth lock washer 4 and cantilever beam
The modeling of such special contact surface provides a kind of feasible method.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of bolt fastening structure with lock washer, including long cantilever beam (1), short cantilever beam (2), connection bolt (3) and
Lock washer (4), it is characterised in that: one end of the long cantilever beam (1) offers the first fixation hole (11), long cantilever beam (1)
The other end offer the first bolt hole (12), one end of the short cantilever beam (2) offers the second fixation hole (21), short cantilever
The other end of beam (2) offers the second bolt hole (22), and the lock washer (4) includes upper gasket (41) and lower gasket (42),
The center of upper gasket (41) and lower gasket (42) offers through-hole (411), upper gasket (41) and lower gasket (42) it is adjacent one
Side is connected separately with the first snap-latch surface (412) and the second snap-latch surface (421), upper gasket (41) and the opposite side of lower gasket (42)
It is respectively equipped with the first contact surface (413) and the second contact surface (422), the first contact surface (413) and long cantilever beam (1) are close to first
One end of bolt hole (12) connects, and the second contact surface (422) is with short cantilever beam (2) close to one end phase of the second bolt hole (22)
It connects, the connection bolt (3) sequentially passes through the second bolt hole (22), through-hole (411) and the first fixation hole (11), and connects bolt
(3) it is engaged by nut upper end.
2. a kind of bolt fastening structure with lock washer according to claim 1, it is characterised in that: first contact
Face (413) and the second contact surface (422) are nonplanar structure.
3. a kind of bolt fastening structure with lock washer according to claim 1, it is characterised in that: first bolt
Hole (12) and the second bolt hole (22) with connect bolt (3) engagement.
4. a kind of bolt fastening structure with lock washer according to claim 1, it is characterised in that: first engaging
Face (412) and the second snap-latch surface (421) surface are equipped with wedge-shaped self-locking structure, the first snap-latch surface (412) and the second snap-latch surface (421)
Engagement.
5. a kind of bolt fastening structure with lock washer according to claim 1, it is characterised in that: the connection bolt
It (3) is M8 screw rod.
6. a kind of modeling method of the bolt fastening structure with lock washer as defined in claim 1, which is characterized in that
Include the following steps:
S1: it establishes entity: establishing beam type bolt arrangement threedimensional model with 3 d modeling software SolidWorks；
S2: define solid material: be respectively long cantilever beam (1), short cantilever beam (2), connection bolt (3) and lock washer (4) into
The material properties of row substantial definition, long cantilever beam (1), short cantilever beam (2) and lock washer (4) are handled according to No. 45 steel, close
Degree is 7850kg/m3, and elasticity modulus 210Gpa, Poisson's ratio 0.3, solid element is using C3D8R unit；
S3: it defines assembly relation: the first contact surface (413) and the second contact surface (422) is subjected to equivalent replace with approximate thin layer (5)
Generation, by the structure of thin layer (5) plus lock washer (4) after equivalent of practical lock washer (4) structure in foregoing description structure
Carry out equivalent substitution；
S4: setting analysis step and output variable: change connection bolt (3) magnitude of load, export the intrinsic frequency of mode of flexural vibration；
S5: it defines contact type: the contact between each contact surface is set, and coefficient of friction takes 0.15；
S6: setting boundary condition and load: all freedom degrees of long cantilever beam (1) end are constrained, in a certain of screw rod
Apply bolt load on section, using single-sweep polarograpy, frequency analysis step is solved；
S7: grid division: establishing reference axis, and Y-axis is intrinsic frequency, and unit Hz, X-axis is pretightning force, unit N；
S8: submitting and monitoring model: extracting the intrinsic frequency of the first six rank mode of flexural vibration of different pretightning force flowering structures；
S9: checking output, analyzes result: with the increase of thin layer (5) elasticity modulus, the corresponding intrinsic frequency of structure is in be incremented by
Gesture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910268226.2A CN109973506A (en) | 2019-04-04 | 2019-04-04 | A kind of bolt fastening structure and its modeling method with lock washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910268226.2A CN109973506A (en) | 2019-04-04 | 2019-04-04 | A kind of bolt fastening structure and its modeling method with lock washer |
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| Publication Number | Publication Date |
|---|---|
| CN109973506A true CN109973506A (en) | 2019-07-05 |
Family
ID=67082758
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910268226.2A Pending CN109973506A (en) | 2019-04-04 | 2019-04-04 | A kind of bolt fastening structure and its modeling method with lock washer |
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| CN (1) | CN109973506A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111625911A (en) * | 2020-06-04 | 2020-09-04 | 中国科学院长春光学精密机械与物理研究所 | Modeling method for simulating screw connection |
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2019
- 2019-04-04 CN CN201910268226.2A patent/CN109973506A/en active Pending
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| CN111625911A (en) * | 2020-06-04 | 2020-09-04 | 中国科学院长春光学精密机械与物理研究所 | Modeling method for simulating screw connection |
| CN111625911B (en) * | 2020-06-04 | 2023-03-31 | 中国科学院长春光学精密机械与物理研究所 | Modeling method for simulating screw connection |
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