CN202646298U - Contact bolt and fixing assembly of the same - Google Patents
Contact bolt and fixing assembly of the same Download PDFInfo
- Publication number
- CN202646298U CN202646298U CN 201220229521 CN201220229521U CN202646298U CN 202646298 U CN202646298 U CN 202646298U CN 201220229521 CN201220229521 CN 201220229521 CN 201220229521 U CN201220229521 U CN 201220229521U CN 202646298 U CN202646298 U CN 202646298U
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- China
- Prior art keywords
- bolt
- arc
- contact
- packing ring
- nut
- Prior art date
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Abstract
The utility model provides a contact bolt which comprises a bolt head and a bolt bar with threads. An arc and convex surface is arranged on one side of the bolt head, and the side of the bolt head is near the bolt bar. The utility model further provides a fixing assembly. The fixing assembly comprises the contact bolt, a nut and a first gasket, wherein the contact bolt penetrates through the first gasket and a component to be fixed, the contact bolt is connected with nut threads, an arc and concave surface matched with the arc and convex surface of the bolt head is arranged on one side of the first gasket, and the side of the first gasket is near the bolt head of the contact bolt. According to the contact bolt and the fixing assembly of the same, the bolt head is in contact with a gasket in a spherical surface mode, and therefore load from various directions can be borne, effect of complicated dynamic load can be well adapted, and then service life of a bolt can be prolonged.
Description
Technical field
The utility model relates to mechanical connecting structure, particularly relates to a kind of fixing-assembly that contacts bolt and comprise this contact bolt.
Background technique
Bolt connects because of easy accessibility, the high machinery industry that is widely used in of join strength.The load that bolt can bear mainly is axial tension.In assembly process, usually need to apply certain pretightening force and produce frictional force, to offset the impact of shearing stress in the working procedure.Therefore, under varying load effect, bolt easily produces stress concentration portion position (such as bolt root, thread root etc.) and often bears the load that surpasses under the normal operation far away.To this, common way is the situation according to work loads, selects the bolt of suitable large ting model.In addition, toward contact Bending load, at this moment will to produce larger stress concentrated for bolt root between two members that are bolted.This shows, when being the plane contact structure between bolt head and the mounting edge, bolt root is a dangerous position.
The model utility content
The purpose of this utility model is intended to change the contact structures of bolt head, with the adverse effect of weakening dynamic load (particularly flexural load) to bolt root, thus the operating life of raising bolt.
According to first aspect of the present utility model, a kind of contact bolt is provided, it comprises bolt head and the threaded bolt shank of tool, wherein, a side of the contiguous described bolt shank of described bolt head has the arc nonreentrant surface.
According to second aspect of the present utility model, a kind of fixing-assembly is provided, it comprises described contact bolt, nut and the first packing ring, described contact bolt passes described the first packing ring and element to be fixed, and be connected with described nut thread, a side of the bolt head of the contiguous described contact bolt of described the first packing ring has the recessed surface of arc of matching with the arc nonreentrant surface of described bolt head.
Wherein, the arc nonreentrant surface of described bolt head has identical curvature with the recessed surface of the arc of described the first packing ring.
Preferably, between described nut and element to be fixed, be provided with the second packing ring.
Wherein, a side of contiguous described the second packing ring of described nut has the arc nonreentrant surface, and a side of the contiguous described nut of described the second packing ring has the recessed surface of arc of matching with the arc nonreentrant surface of described nut.
Wherein, the arc nonreentrant surface of described nut has identical curvature with the recessed surface of the arc of described the second packing ring.
Beneficial effect:
1. the angle of an inclination is arranged between bolt shank and the bolt head, no longer is the right angle, has improved the bearing capacity of bolt root;
2. be sphere-contact between bolt head and the packing ring, thus the load from a plurality of directions can be born, and therefore can adapt to well the effect of complicated dynamic load;
3. the diameter of packing ring is larger than bolt head, increased and mounting edge between area of contact, be conducive to protect part, and after packing ring lost efficacy, can change separately.
Description of drawings
Fig. 1 is the perspective view according to the preferred embodiment of contact bolt of the present utility model;
Fig. 2 is the sectional view according to first preferred embodiment of fixing-assembly of the present utility model;
Fig. 3 is the sectional view according to second preferred embodiment of fixing-assembly of the present utility model.
Description of reference numerals
100 fixing-assemblys
10 contact bolts
11 bolt heads
111 arc nonreentrant surfaces
12 bolt shank
20,20 ' nut
21 arc nonreentrant surfaces
30 first packing rings
The recessed surface of 31 arcs
40, the 40 ' second packing ring
The recessed surface of 41 arcs
50,60 elements
Embodiment
Describe in detail according to preferred embodiment of the present utility model below in conjunction with accompanying drawing.
Fig. 1 shows the preferred embodiment according to contact bolt 10 of the present utility model.Contact bolt 10 comprises bolt head 11 and the threaded bolt shank 12 of tool, and wherein a side of bolt head 11 contiguous bolt shank 12 has arc nonreentrant surface 111.
Fig. 2 shows the first preferred embodiment according to fixing-assembly of the present utility model.Fixing-assembly 100 comprises contact bolt 10, nut 20 and the first packing ring 30 among Fig. 1.The first packing ring 30 is between the bolt head 11 and element 50 to be fixed of contact bolt 10, and sides of the first packing ring 30 contiguous contact bolts 10 have the arc that matches with the arc nonreentrant surface 111 of bolt head 11 recessed surperficial 31.Preferably, the arc nonreentrant surface 111 of bolt head 11 has identical curvature with the arc of the first packing ring 30 recessed surperficial 31.That is, when bolt 10 and 30 cooperation of the first packing ring, the arc nonreentrant surface 111 of bolt head 11 can be fitted with the arc of the first packing ring 30 recessed surperficial 31.Preferably, between nut 20 and element 60 to be fixed, be provided with the second packing ring 40.
As shown in the figure, the bolt shank 12 of contact bolt 10 pass on the first packing ring 30, the element 50,60 to be fixed the hole (for example, hole in the mounting flange section of element), then pass the second packing ring 40 and be threaded with nut 20, thereby element that will be to be fixed 50,60 is fixed together.
Fig. 3 shows the second preferred embodiment according to fixing-assembly of the present utility model.Be with the difference of embodiment among Fig. 2, one side of nut 20 ' contiguous second packing ring 40 ' on right side has arc nonreentrant surface 21, and a side of the second packing ring 40 ' contiguous nut 20 ' has the arc that matches with the arc nonreentrant surface 21 of nut 20 ' recessed surperficial 41.Preferably, the arc nonreentrant surface 21 of nut 20 ' has identical curvature with the arc of the second packing ring 40 ' recessed surperficial 41.That is, when nut 20 ' and the 40 ' cooperation of the second packing ring, the arc nonreentrant surface 21 of nut 20 ' can be fitted with the arc of the second packing ring 40 ' recessed surperficial 41.
According to above-described embodiment of the present utility model, the sphere-contact bolt is that bolt head screw rod one side with metal bolts (plain bolt, self-locking screw etc.) is processed as sphere, during installation and a metal washer be used in conjunction with.The surface of contact of packing ring and bolt head also is sphere, and the amount of curvature of the two is identical, is plane contact between packing ring and the mounting edge.
Under the normal operation, the contact bolt is subject to axial tension, and surface of contact is evenly carrying circumferentially, and the direction of power is along the surface of contact Normal direction, and bolt head and bolt shank connection part stressing conditions improve.When being subject to the complex load such as flexural stress when assembly, the contact sphere can be adjusted the variation that the stress distribution situation adapts to working environment automatically.Therefore, the utility model bolt fastening structure of being applied to be subject to dynamic load will have advantage.
Specific embodiment described in the utility model is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all belong to protection domain of the present utility model.
Claims (6)
1. one kind contacts bolt, and it comprises bolt head and the threaded bolt shank of tool, it is characterized in that, a side of the contiguous described bolt shank of described bolt head has the arc nonreentrant surface.
2. fixing-assembly, it is characterized in that, comprise contact bolt according to claim 1, nut and the first packing ring, described contact bolt passes described the first packing ring and element to be fixed, and be connected with described nut thread, a side of the bolt head of the contiguous described contact bolt of described the first packing ring has the recessed surface of arc of matching with the arc nonreentrant surface of described bolt head.
3. fixing-assembly according to claim 2 is characterized in that, the arc nonreentrant surface of described bolt head has identical curvature with the recessed surface of the arc of described the first packing ring.
4. according to claim 2 or 3 described fixing-assemblys, it is characterized in that, between described nut and element to be fixed, be provided with the second packing ring.
5. fixing-assembly according to claim 4, it is characterized in that, one side of contiguous described the second packing ring of described nut has the arc nonreentrant surface, and a side of the contiguous described nut of described the second packing ring has the recessed surface of arc of matching with the arc nonreentrant surface of described nut.
6. fixing-assembly according to claim 5 is characterized in that, the arc nonreentrant surface of described nut has identical curvature with the recessed surface of the arc of described the second packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229521 CN202646298U (en) | 2012-05-21 | 2012-05-21 | Contact bolt and fixing assembly of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220229521 CN202646298U (en) | 2012-05-21 | 2012-05-21 | Contact bolt and fixing assembly of the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646298U true CN202646298U (en) | 2013-01-02 |
Family
ID=47415413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220229521 Expired - Lifetime CN202646298U (en) | 2012-05-21 | 2012-05-21 | Contact bolt and fixing assembly of the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646298U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565366A (en) * | 2014-12-17 | 2015-04-29 | 中广核核电运营有限公司 | Sealing plate for evaporator port |
| CN114909381A (en) * | 2021-02-07 | 2022-08-16 | 中国航发商用航空发动机有限责任公司 | Bolt rotation-proof assembly structure and aircraft engine adopting same |
| CN115163951A (en) * | 2022-06-30 | 2022-10-11 | 北京宇航***工程研究所 | Assembly self-adaptation sphere flange joint structure |
-
2012
- 2012-05-21 CN CN 201220229521 patent/CN202646298U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565366A (en) * | 2014-12-17 | 2015-04-29 | 中广核核电运营有限公司 | Sealing plate for evaporator port |
| CN104565366B (en) * | 2014-12-17 | 2017-07-28 | 中广核核电运营有限公司 | A kind of sealing closure plate for evaporator port |
| CN114909381A (en) * | 2021-02-07 | 2022-08-16 | 中国航发商用航空发动机有限责任公司 | Bolt rotation-proof assembly structure and aircraft engine adopting same |
| CN114909381B (en) * | 2021-02-07 | 2023-11-03 | 中国航发商用航空发动机有限责任公司 | Bolt anti-rotation assembly structure and aeroengine adopting same |
| CN115163951A (en) * | 2022-06-30 | 2022-10-11 | 北京宇航***工程研究所 | Assembly self-adaptation sphere flange joint structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Patentee after: China Hangfa commercial aviation engine limited liability company Address before: 201109 Shanghai city Minhang District Hongmei Road No. 5696 Room 101 Patentee before: AVIC Commercial Aircraft Engine Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |