CN104196864A - Double-nut check bolt - Google Patents
Double-nut check bolt Download PDFInfo
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- CN104196864A CN104196864A CN201410416652.3A CN201410416652A CN104196864A CN 104196864 A CN104196864 A CN 104196864A CN 201410416652 A CN201410416652 A CN 201410416652A CN 104196864 A CN104196864 A CN 104196864A
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- nut
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Abstract
The invention discloses a double-nut check bolt which is characterized in that the bolt comprises an oval bolt and an auxiliary nut and a main nut, the auxiliary nut and the main nut are sequentially connected with the oval bolt in a penetrated mode, and the periphery of the end, penetrating through the auxiliary nut and the main nut, of the oval bolt is sequentially connected with a cylinder body and a lining plate in a penetrated mode. According to the double-nut check bolt, the bolt is sequentially connected with the auxiliary nut and the main nut in a sleeved mode, and the auxiliary nut and the main nut are mutually meshed in an extrusion mode through screw threads on the surface of the auxiliary nut and screw threads on the surface of the main nut, so that fastening performance of the bolt is greatly enhanced. The double-nut check bolt is reasonable in design, convenient and fast to operate, good in fastening performance, high in practicability, good in using effect, and convenient to use and popularize.
Description
Technical field
The present invention relates to technical field of fastening, especially relate to a kind of pairs of anti-loose nut bolt.
Background technique
Fastening piece is to be fastenedly connected with and to apply class mechanical parts very widely.On various machinery, equipment, vehicle, boats and ships, railway, bridge, building etc., can see fastening piece miscellaneous; Existing fastening piece is mostly plain bolt pair for plain bolt is connected fastening mode with nut; Do connection with bolt pair fastening, for the Structural Hardware product that will often tear fortune assembling open, in dismounting, provide convenience.But, after also having quite a few structure dress, generally no longer dismounting, because employing does not have the secondary connection of plain bolt of anti-loosening measure fastening, through wind rain beautiful jade, year in and year out, the corrosion of metal surface or in wind and rain naturally vibrations reason, nut loosening often have it; Also have in the machinery and building structure under fierce oscillating load effect; the loosening problem of plain bolt pair is very serious; often also can cause major accident; if do not find in time maintenance; causing connecting insecure or bolt and nut comes off. and there is serious accident, cause immeasurable loss.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of pairs of anti-loose nut bolt is provided, it is socketed successively secondary nut, mother nut on bolt, mutually push engagement by secondary nut, mother nut by surperficial separately thread, after two double nuts are tightened, the pressure direction of the axial direction that thread side is subject in the screw pair of two nuts and bolt composition is contrary, thus when external force make in screw pair the pressure on thread reduce to become impossible.External force reduces side's pressure, and the opposing party's pressure must rise, thereby has ensured that the total pressure on thread is constant in screw pair, is also that locking drag overall square is constant, and " self-locking " can be ensured.It is reasonable in design, simple operation, and tightness is good, practical, and using effect is good, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of pairs of anti-loose nut bolt, it is characterized in that: comprise oval bolt and run through successively with it the secondary nut, the mother nut that are connected, described secondary nut, mother nut push engagement mutually by surperficial separately thread, and described oval bolt also runs through and is connected with cylindrical shell, liner plate successively through the other end periphery of secondary nut, mother nut.
Above-mentioned a kind of pairs of anti-loose nut bolt, is characterized in that: described oval bolt is all connected by the intermeshing mode of thread surface with secondary nut, mother nut, cylindrical shell, liner plate.
Above-mentioned a kind of pairs of anti-loose nut bolt, is characterized in that: described secondary nut, mother nut shape are identical.
The present invention compared with prior art has the following advantages:
In sum, the present invention is socketed successively secondary nut, mother nut on bolt, mutually push engagement by secondary nut, mother nut by surperficial separately thread, after two double nuts are tightened, the pressure direction of the axial direction that thread side is subject in the screw pair of two nuts and bolt composition is contrary, thus when external force make in screw pair the pressure on thread reduce to become impossible.External force reduces side's pressure, and the opposing party's pressure must rise, thereby has ensured that the total pressure on thread is constant in screw pair, is also that locking drag overall square is constant, and " self-locking " can be ensured.It is reasonable in design, simple operation, and tightness is good, practical, and using effect is good, is convenient to promote the use of.
Below by drawings and Examples, technological scheme of the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is pairs of anti-loose nut bolt overall structure schematic diagram of the present invention;
Fig. 2 is the figure that in pairs of anti-loose nut bolt thread pair of the present invention, the worm tooth situation that is squeezed changes.
Description of reference numerals:
1, oval bolt; 2, secondary nut; 3, mother nut; 4, cylindrical shell; 5, liner plate.
Embodiment
As shown in Figure 1, a kind of pairs of anti-loose nut bolt, it is characterized in that: comprise oval bolt 1 and run through successively with it the secondary nut 2, the mother nut 3 that are connected, described secondary nut 2, mother nut 3 push engagement mutually by surperficial separately thread, and described oval bolt 1 also runs through and is connected with cylindrical shell 4, liner plate 5 successively through the other end periphery of secondary nut 2, mother nut 3.
In the present embodiment, described oval bolt 1 is all connected by the intermeshing mode of thread surface with secondary nut 2, mother nut 3, cylindrical shell 4, liner plate 5.
In the present embodiment, described secondary nut 2, mother nut 3 shapes are identical.
As shown in Figure 2, for the ease of analyzing, with reference to on-the-spot actual, its assembly process is set forth herein according to the following procedure: being first tightening of single nut (being mother nut), is then tightening of secondary nut.The tightening and be divided into 2 processes of secondary nut: the 1st process is secondary nut screwing clamping to be not the squeezed state of impacting force of the thread that makes mother nut in screw pair, and at this moment mother nut is equivalent to a plain washer; The 2nd process be mother nut in screw pair, its thread is subject to the state of desired pretension extruding impacting force, the opposite direction of the pressure being subject on mother nut thread in this state and the impacting force being originally subject to, and reach locking requirement.Fig. 2 is the diagram that in said process screw pair, the worm tooth situation that is squeezed changes.Fig. 2 a is the state after single nut screwing clamping: in the screw pair of mother nut and bolt composition, its worm tooth upper side is squeezed; Fig. 2 b is the state after the 1st process of secondary nut screwing clamping: in the screw pair of mother nut and bolt composition, the upper and lower side of its worm tooth is not all squeezed, and thread upside in the screw pair that secondary nut and bolt form is squeezed; Fig. 2 c is the state after the 2nd process of secondary nut tightened: in the screw pair of mother nut and bolt composition, and its thread downside surface power that is squeezed, and in the screw pair that secondary nut and bolt form, thread upper side is subject to larger extruding force.After two double nuts are tightened, the pressure direction of the axial direction that thread side is subject in the screw pair of two nuts and bolt composition is contrary, thus when external force make in screw pair the pressure on thread reduce to become impossible.External force reduces side's pressure, and the opposing party's pressure must rise, thereby has ensured that the total pressure on thread is constant in screw pair, is also that locking drag overall square is constant, and " self-locking " can be ensured.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.
Claims (3)
1. a pairs of anti-loose nut bolt, it is characterized in that: comprise oval bolt (1) and run through successively with it the secondary nut (2), the mother nut (3) that are connected, described secondary nut (2), mother nut (3) push engagement mutually by surperficial separately thread, and described oval bolt (1) also runs through and is connected with cylindrical shell (4), liner plate (5) successively through the other end periphery of secondary nut (2), mother nut (3).
2. according to a kind of pairs of anti-loose nut bolt claimed in claim 1, it is characterized in that: described oval bolt (1) is all connected by the intermeshing mode of thread surface with secondary nut (2), mother nut (3), cylindrical shell (4), liner plate (5).
3. according to a kind of pairs of anti-loose nut bolt claimed in claim 1, it is characterized in that: described secondary nut (2), mother nut (3) shape are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416652.3A CN104196864A (en) | 2014-08-22 | 2014-08-22 | Double-nut check bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416652.3A CN104196864A (en) | 2014-08-22 | 2014-08-22 | Double-nut check bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104196864A true CN104196864A (en) | 2014-12-10 |
Family
ID=52082206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410416652.3A Pending CN104196864A (en) | 2014-08-22 | 2014-08-22 | Double-nut check bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104196864A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246696A (en) * | 2016-08-25 | 2016-12-21 | 安徽六方重联机械股份有限公司 | Self-locking nut structure |
| CN106837977A (en) * | 2017-02-21 | 2017-06-13 | 宝鸡石油机械有限责任公司 | Double nuts structure with automatic loose proof function |
| CN109296622A (en) * | 2018-12-07 | 2019-02-01 | 江西洪都航空工业集团有限责任公司 | A kind of anti-loosening structure for thread connection under space constraint |
| CN109578422A (en) * | 2019-01-19 | 2019-04-05 | 山东理工大学 | A kind of locking fastening assembly |
| CN110714970A (en) * | 2019-10-12 | 2020-01-21 | 海盐大成汽车零部件有限公司 | Double-nut anti-loose structure |
-
2014
- 2014-08-22 CN CN201410416652.3A patent/CN104196864A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246696A (en) * | 2016-08-25 | 2016-12-21 | 安徽六方重联机械股份有限公司 | Self-locking nut structure |
| CN106837977A (en) * | 2017-02-21 | 2017-06-13 | 宝鸡石油机械有限责任公司 | Double nuts structure with automatic loose proof function |
| CN109296622A (en) * | 2018-12-07 | 2019-02-01 | 江西洪都航空工业集团有限责任公司 | A kind of anti-loosening structure for thread connection under space constraint |
| CN109578422A (en) * | 2019-01-19 | 2019-04-05 | 山东理工大学 | A kind of locking fastening assembly |
| CN110714970A (en) * | 2019-10-12 | 2020-01-21 | 海盐大成汽车零部件有限公司 | Double-nut anti-loose structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141210 |