CN206668690U - A kind of splicing attachment structure of teethed end faces - Google Patents
A kind of splicing attachment structure of teethed end faces Download PDFInfo
- Publication number
- CN206668690U CN206668690U CN201720305399.3U CN201720305399U CN206668690U CN 206668690 U CN206668690 U CN 206668690U CN 201720305399 U CN201720305399 U CN 201720305399U CN 206668690 U CN206668690 U CN 206668690U
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- Prior art keywords
- wedge
- connection
- attachment structure
- connected component
- linkage section
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Abstract
The utility model discloses a kind of splicing attachment structure of teethed end faces, include the connected component and connection member of upper and lower overlapping placement, the connection end of the connected component and connection member mutually overlaps to form single overlap joint solvent cement joint, overlapping regions filling adhesive between connection end is so as to forming unconsolidated zone, the connection end of the connected component includes equal thickness linkage section and wedge-shaped segment, wherein, the equal thickness linkage section, which is at least partially disposed at, is glued region, the wedge-shaped segment, which is completely in, is glued region, the seamed edge of the wedge-shaped segment both sides forms edge chamfer, the edge chamfer at least smoothly transits to positioned at the equal thickness linkage section for being glued region, so as to avoid attachment structure rigidity from drastically changing, the stress concentration of linkage section end can effectively be alleviated；Jagged tooth form border transition is used in the end of the wedge-shaped segment thinner thickness, for the stiffness transition of smooth connection structure, bonding interface Crack Extension can be suppressed under fatigue load.
Description
Technical field
A kind of splicing attachment structure, more particularly to teethed end faces attachment structure are the utility model is related to, belongs to material connection
Methods and techniques field.
Background technology
It is a kind of structure type for the interphase interaction for being widely used in engineering field, realizing structural member to be glued connection, glue
It is to evaluate the good and bad important parameter of switching performance to connect intensity.Improving the method for glue-joint strength mainly includes：(1) mechanical property is used
More excellent connected piece material and adhesive；（2）Optimize attachment structure geometric properties so that connection load fairing transmission, to the greatest extent may be used
It is avoided that stress raisers.The manufacturing cost of product is often increased considerably using high performance material, in actual applications by
To larger limitation.Cementing structure has unique distribution of force, is being glued face, groove type distribution, connection two is presented in shear stress
End stress is big, and middle part stress is small.As shown in figure 1, single overlap joint gluded joint is formed between wide uniform thickness connected piece 8 and connector
Structure, overlap filling bonding agent 7 therebetween, the connected piece 8 for being generally glued connection are designed to equal thickness, equal in width knot
Structure.This connected piece is notable by being bonded the cementing structure stress concentration formed, and glue-joint strength is low.Therefore, optimizing both ends should
Power is distributed, and it is the effective way for avoiding stress concentrations to reduce maximum stress value.Under axial loading, edge effect is brought
Local excessive stresses are also to cause another key factor caused by edge crack.Under fatigue load, be glued the crackle at interface with
The increase for cyclic loading number gradually extends, when crack growth to a certain extent after whole cementing structure can not bear subsequently to carry
Lotus and it is entirely ineffective, prevent crackle from increasing substantially fatigue life of splicing in the rapid extension for being glued face, therefore, optimization
It is glued connection geometry, avoids the stress concentration of end and both sides, while prevent crackle from being carried in fatigue by respective design
Quick Extended is of great advantage to improving glue-joint strength under lotus.
Utility model content
For the disadvantages mentioned above and deficiency of prior art, technical problem to be solved in the utility model is to provide a kind of connect
Connect the teethed end faces cementing structure that intensity is high, connecting portion stress concentration is small.
By solution, its technical problem adopts the technical scheme that the utility model：
A kind of splicing attachment structure of teethed end faces, including the connected component and connection member of overlapping placement up and down, institute
The connection end structure for stating connected component and connection member is essentially identical and mutually overlap joint forms single overlap joint gluded joint, the quilt
Overlapping regions filling adhesive between connection member and the connection end of connection member is glued region so as to be formed, and its feature exists
In：
Different from traditional equal in width equal thickness list overlap joint attachment structure, teethed end faces attachment structure of the invention uses wedge
The connection end of shape section transition, the connected component and connection member includes equal thickness linkage section and wedge-shaped segment, wherein, it is described
Equal thickness linkage section is at least part of positioned at region is glued, and the wedge-shaped segment, which is completely in, is glued region, in the wedge-shaped segment
The seamed edge of both sides is held to form edge chamfer, the edge chamfer at least smoothly transits to the equal thickness linkage section positioned at splicing region,
So as to avoid attachment structure rigidity from drastically changing, effectively alleviate the stress concentration of linkage section end；
Jagged tooth form border transition is used in the end of the wedge-shaped segment thinner thickness, for smooth connection structure
Stiffness transition, bonding interface Crack Extension can be suppressed under fatigue load
Preferably, the edge chamfer can be further arranged to concave shaped, and concave shaped edge chamfer can effectively be alleviated
Stress concentration caused by the laterally free boundary effect of attachment structure.
Further, the edge chamfer of concave shaped also has certain transition arcs in side, can effectively reduce longitudinal direction and horizontal stroke
To stress concentration so that coupling stiffness fairing transition.The design of this structure can fairing rigidity to greatest extent transition, greatly
Width alleviates the stress concentration of connection end, improves the bearing capacity of splicing.
Preferably, the connected component is identical with the connection end structure of connection member, and overlap joint symmetrical above and below is set.
Compared with technology contrast, teethed end faces gemel connection structure of the present utility model has following notable technique effect：
1. teethed end faces gemel connection structure of the present utility model uses wedge structure as changeover portion, more traditional equal in width
Equal thickness list overlaps attachment structure, can effectively alleviate the stress concentration of linkage section end.
2. being connected section and wedge-shaped segment both sides through equal thickness using concave shaped edge chamfer, it can effectively alleviate connection
The horizontal stress concentration caused by the abrupt change of cross-section of structure.
3. under the conditions of equal carrying is met, teethed end faces gemel connection structure of the present utility model can increase in unobvious
Being substantially improved for glue-joint strength is realized on the basis of weight and manufacturing cost.
Brief description of the drawings
Fig. 1 tradition equal in width equal thickness list overlaps attachment structure front view；
The teethed end faces gemel connection structural representation of Fig. 2 present invention；
The teethed end faces gemel connection structure front view of Fig. 3 present invention；
The teethed end faces gemel connection structure top view of Fig. 4 present invention；
The peel stress distribution map of Fig. 5 equal thickness connectors and Wedge-shape connector mesoglea.
Wherein：1- connection members, 2- connected components, 3- equal thickness linkage sections, 4- wedge-shaped segments, 5- edge chamfers, 6- teeth
Shape border, 7- binding agents, the wide uniform thickness connected pieces of 8-.
Embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail, such as
Shown in Fig. 2-4, teethed end faces of the invention are glued attachment structure, including the connected component 1 and connecting portion of overlapping placement up and down
Part 2, the connection end structure of the two is essentially identical and mutually overlap joint forms single overlap joint solvent cement joint, connected component 1 and connecting portion
So as to form unconsolidated zone, the connection end of connected piece 1 connects overlapping regions filling adhesive 7 between part 2 including equal thickness
Section 3 and wedge-shaped segment 4, its intermediate gauge linkage section 3, which is at least partially disposed at, is glued region, and wedge-shaped segment 4, which is completely in, is glued region.Wedge
The seamed edge of the both sides upper end of shape section 4 forms edge chamfer 5, and the edge chamfer 5 at least smoothly transits to positioned at the uniform thickness for being glued region
Linkage section 3 is spent, so as to avoid attachment structure rigidity from drastically changing, can effectively alleviate the stress collection of linkage section end
In.Edge chamfer 5 can be further arranged to concave shaped, and concave shaped edge chamfer 5 can effectively alleviate attachment structure laterally certainly
The stress concentration as caused by boundary effect.Further, the edge chamfer 5 of concave shaped also has certain transition arcs in side, can
To effectively reduce the stress concentration of vertical and horizontal so that coupling stiffness fairing transition.In the end shape of the thinner thickness of wedge-shaped segment 4
Saw-toothed tooth form border 6, for the stiffness transition of smooth connection structure, under fatigue load can suppress bonding interface splits
Line extends.The design of this structure can fairing rigidity to greatest extent transition, significantly alleviate the stress concentration of connection end, carry
The bearing capacity that height is glued.
As shown in figure 5, illustrate equal thickness connection and the wedge-shaped stripping for being connected to both ends tensile load effect lower glue layer center line
From stress, can all occur different degrees of stress concentration phenomenon at the both ends of glue-line, but Wedge-shape connector（B-B）Compare equal thickness
Connector（A-A）The peel stress of splicing is much smaller.Existing research shows that peel stress is to cause the leading of adhesive bond failure should
Force vector, peel stress is bigger, and splicing bearing capacity is poorer, therefore, glue-joint strength, wedge can be greatly improved using wedge shape splicing
Shape connector, which is glued configuration, has prominent mechanical property advantage.
The preparation method of teethed end faces glue downlink connection structure in the utility model, including following three kinds：
Method one：Mould prepares method
（1）The connection end of connection member and connected component is designed to equal in width, equal thickness structure according to demand；
（2）According to the attachment structure of design design can fill, can pour or can laying mould；
（3）The connection end structure of connection member and connected component is prepared using mould；
（4）Bonding agent is coated from one end to the other side in the connection end faying face of connected component, avoids bonding plane from introducing
Bubble；
（5）Using centralising device by the connection end overlapping alignment of connected piece, pressurization, it is heating and curing；
Method two：Laying preparation method, suitable for fibrous composite moulding process
（1）Design connection end structure and size as needed；
（2）Fibrous composite is cut into the shape of needs according to design size；
（3）Fiber is laid in laying mould to certain thickness；
（4）Imported using vacuum or compression-moulding methods solidify；
（5）Connection end technique for sticking and step in the mould preparation method of method one（4）、（5）It is identical；
Method three：Machining method
（1）The physical dimension of the connection end of design connection member as needed；
（2）The suitable block exemplar of selection, the machine-shaping on machining apparatus；
（3）Connection end technique for sticking and the step in the mould preparation method of method one（4）、（5）It is identical.
The scope of protection of the utility model is not limited to the above embodiments, it is clear that those skilled in the art can be right
The utility model carries out various changes and deformation without departing from the scope of the utility model and spirit.If these changes and deformation
Belong in the range of the utility model claims and its equivalent technologies, then it is of the present utility model intention also comprising these change and
Including deformation.
Claims (4)
1. a kind of splicing attachment structure of teethed end faces, including the connected component and connection member of overlapping placement up and down, described
The connection end of connected component and connection member mutually overlaps to form single overlap joint solvent cement joint, the connected component and connecting portion
Overlapping regions filling adhesive between the connection end of part forms unconsolidated zone, it is characterised in that：The company of the connected component
Connecing end includes equal thickness linkage section and wedge-shaped segment, wherein, the equal thickness linkage section is at least part of positioned at splicing region, institute
State wedge-shaped segment and be completely in and be glued region, the seamed edge of wedge-shaped segment upper end both sides is provided with edge chamfer, and the edge chamfer is at least
Smoothly transit to positioned at the equal thickness linkage section for being glued region；The end of thickness of thin uses jagged tooth form in the wedge-shaped segment
Border transition.
2. the splicing attachment structure of teethed end faces as claimed in claim 1, it is characterised in that the edge chamfer is further set
Concave shaped is set to, for alleviating stress concentration caused by the laterally free boundary effect of attachment structure.
3. the splicing attachment structure of teethed end faces as claimed in claim 2, it is characterised in that the concave shaped edge chamfer exists
There are transition arcs side, for reducing the stress concentration of vertical and horizontal.
4. the splicing attachment structure of teethed end faces as claimed in claim 1, it is characterised in that the connected component and connection
The connection end structure of part is identical, and overlap joint symmetrical above and below is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720305399.3U CN206668690U (en) | 2017-03-27 | 2017-03-27 | A kind of splicing attachment structure of teethed end faces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720305399.3U CN206668690U (en) | 2017-03-27 | 2017-03-27 | A kind of splicing attachment structure of teethed end faces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206668690U true CN206668690U (en) | 2017-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720305399.3U Withdrawn - After Issue CN206668690U (en) | 2017-03-27 | 2017-03-27 | A kind of splicing attachment structure of teethed end faces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837960A (en) * | 2017-03-27 | 2017-06-13 | 武汉理工大学 | A kind of splicing attachment structure of teethed end faces and preparation method thereof |
-
2017
- 2017-03-27 CN CN201720305399.3U patent/CN206668690U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837960A (en) * | 2017-03-27 | 2017-06-13 | 武汉理工大学 | A kind of splicing attachment structure of teethed end faces and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171124 Effective date of abandoning: 20180727 |