CN203348282U - Locking device for large-specification bolt connecting piece - Google Patents
Locking device for large-specification bolt connecting piece Download PDFInfo
- Publication number
- CN203348282U CN203348282U CN 201320428058 CN201320428058U CN203348282U CN 203348282 U CN203348282 U CN 203348282U CN 201320428058 CN201320428058 CN 201320428058 CN 201320428058 U CN201320428058 U CN 201320428058U CN 203348282 U CN203348282 U CN 203348282U
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- CN
- China
- Prior art keywords
- bolt
- locking device
- connecting piece
- locking ring
- nut
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a locking device for a large-specification bolt connecting piece. The bolt connecting piece comprises a bolt and a nut which are connected in a matched mode. The locking device comprises an annular groove and a locking ring which are matched with each other. The annular groove is formed in the position at the outer end of the nut at the tail of the bolt. The locking ring is extruded by the external force and deformed to press the annular groove inwards. The locking device for the large-specification bolt connecting piece is simple in structure and convenient to produce, has the advantages of being adjustable in clamping force and safe and convenient to use, saving labor and effort and the like, is especially suitable for large-specification bolts larger than M42, has a wide use range in a production site and is easy to use in a large scale and popularize widely.
Description
Technical field
The utility model relates to a kind of bolted on connection locking device, specifically under the severe operating mode of a kind of heavily loaded load, alternating stress, environment, and the connection locking device of large sized bolt.
Background technique
Bolted on connection is to apply bind mode very widely in machinery industry.In real work, external load has vibration, variation, material at high temperature creep etc. can cause frictional force to reduce, and in screw pair, positive pressure is zero in a certain pop-off, frictional force, thereby makes scyewed joint loosening, and as through repeated action, bolted on connection will relax and lose efficacy.Therefore, must carry out lockingly, otherwise can affect normal operation, cause the accident.
Bolted on connection is loosening is a hard nut to crack of machinery industry, be prone to loosening fracture accident under the locking modes such as traditional shimming, the double nut operating mode severe at large specification heavy duty load, alternating stress, environment, fatal crass's tragedy may occur when serious.
Summary of the invention
The utility model, for the deficiency of existing bolted on connection locking device, is developed a kind of safer, efficient loosening device of large sized bolt connection that makes.
The technological scheme that the utility model adopts is:
The locking device of large sized bolt connecting piece, described bolted on connection part comprises the screw bolt and nut of supporting connection, described locking device comprises circular groove and the locking ring cooperatively interacted, circular groove is arranged on the nut outer end position of bolt tail, and locking ring is subject to external force extrusion-deformation, inwardly compresses circular groove.
Described locking ring exterior edge face is to being outside equipped with positioning convex ring.
Described locking ring internal diameter is than the large 1～2mm of the Major Diam of bolt.
The beneficial effect that the utility model produces is:
The connection locking device of large sized bolt of the present utility model, simple in structure, be convenient to produce, have that clamping force is adjustable, safe and convenient to use, the characteristics such as save labor, be specially adapted to the above large sized bolt of M42, have been widely used in production scene, be easy to extensive the use and extensively popularization.
The accompanying drawing explanation
Main TV structure schematic diagram when Fig. 1 is the utility model assembling;
Perspective view when Fig. 2 is the utility model assembling;
The main TV structure schematic diagram that Fig. 3 is the utility model while taking apart, component;
The blast structural representation that Fig. 4 is the utility model when assembling, component;
Fig. 5 is the main TV structure schematic diagram after the utility model docking;
Fig. 6 is the perspective view after the utility model docking;
Number in the figure means: 1-bolt, 2-are coupled part, 3-nut, 4-locking ring, 5-circular groove, 6-bolt tail, 7-through hole, 8-through hole, 9-tapped hole, 10-through hole.
Embodiment
As shown in Fig. 1～6, bolted on connection part described in the utility model comprises bolt 1 and the nut 3 of supporting connection, is coupled part 2-1 and 2-2 and is arranged between bolt 1 and nut 3.
The utility model, on the basis of conventional bolt connecting piece, is used for reference the principle of ring-grooved rivet, on large sized bolt connecting piece, increases a set of locking device, comprises the circular groove 5 and locking ring 4 that cooperatively interact.Circular groove 5 is arranged on nut 3 outer end position of bolt tail 6 in the bolted on connection part, and locking ring 4 is socketed on bolt tail 6, the exterior edge face close contact of its interior edge face and nut 3, and the internal diameter of this locking ring 4 is than the large 1～2mm of the Major Diam of bolt 1.On locking ring 4 exterior edge faces, to being outside equipped with positioning convex ring, for the instrument that applies external force with hydraulic gun etc., coordinate.Locking ring 4 being subject under External Force Acting, extrusion-deformation, inner circumferential surface inwardly compresses circular groove 5, interior edge face gland nut 3 vertically.
Using method of the present utility model is as follows:
At first, according to the needs that connect length, on the bolt tail 6 of bolt 1, place, the outer end processing circular groove 5 of nut 3 pre-installation positions.Then, bolt 1 is passed successively to the through hole 7 be coupled on part 2-1 and is coupled the through hole 8 on part 2-2, then the tapped hole 9 that bolt 1 is passed on nut 3,, make and be tightly linked being coupled part 2-1 and 2-2 tight threaded fasteners by nut 3.Now, the through hole 10 that bolt 1 is passed on locking ring 4, and make the interior edge face of locking ring 4 and the exterior edge face close contact of nut 3.Finally, use hydraulic gun tensile bolt afterbody 6 also to push locking ring 4, what make locking ring 4 is subject to external force extrusion-deformation, the inside circular groove 5 on hold-down bolt 1, concrete: the internal diameter of locking ring 4 is reduced, length increases, and tightly detain dead bolt 1., because of the stretching action of hydraulic gun, automatically the bolt tail of bolted on connection part 6 is cut off simultaneously, be the state shown in Fig. 5,6.
The locking device of the large sized bolt connecting piece in this embodiment, mainly by bolt 1, be coupled part 2-1, be coupled part 2-2, nut 3 and locking ring 4 form.Be processed with circular groove 5 at bolt tail 6, in the initial period of installation process, hydraulic pressure is robbed with locking ring 4 interlocks of bolt tail 6 and is started to draw bolt 1, when being coupled part 2-1 and 2-2 and being tightened up, locking ring 4 is subject to the extruding of hydraulic gun mouth conical cavity and is out of shape, make between locking ring 4 and hydraulic gun muzzle gap eliminate, the material that makes locking ring 4 is the squeezed circular groove 5 of compressing into bolt 1 little by little.The process of this extruding, reduced the diameter of locking ring 4, increased the length of locking ring 4, and the bolt 1 that simultaneously stretched, produced accurate clamping force in junction.Bolt 1, nut 3 have formed the reliable fastening connection of anti-loosening property with together with locking ring 4 after extruding.
This connection locking device locking ring 4 adopts the low-carbon alloy steel making.Bolt 1, nut 3 can adopt standard piece, before connection, according to connecting size requirement, process in advance bolt circular groove 5.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or changed according to the technical solution of the utility model and model utility design thereof, within all should being encompassed in protection domain of the present utility model.
Claims (3)
1. the locking device of large sized bolt connecting piece, described bolted on connection part comprises the screw bolt and nut of supporting connection, it is characterized in that: described locking device comprises circular groove and the locking ring cooperatively interacted, circular groove is arranged on the nut outer end position of bolt tail, and locking ring is subject to external force extrusion-deformation, inwardly compresses circular groove.
2. the locking device of large sized bolt connecting piece according to claim 1, it is characterized in that: described locking ring exterior edge face is to being outside equipped with positioning convex ring.
3. the locking device of large sized bolt connecting piece according to claim 1, it is characterized in that: described locking ring internal diameter is than the large 1～2mm of the Major Diam of bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320428058 CN203348282U (en) | 2013-07-18 | 2013-07-18 | Locking device for large-specification bolt connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320428058 CN203348282U (en) | 2013-07-18 | 2013-07-18 | Locking device for large-specification bolt connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203348282U true CN203348282U (en) | 2013-12-18 |
Family
ID=49748189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320428058 Expired - Fee Related CN203348282U (en) | 2013-07-18 | 2013-07-18 | Locking device for large-specification bolt connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203348282U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989063A (en) * | 2015-07-24 | 2015-10-21 | 杭州斯泰新材料技术有限公司 | Back bolt and connection structure |
| CN105064557A (en) * | 2015-07-24 | 2015-11-18 | 杭州斯泰新材料技术有限公司 | Improved screw-in type back bolt and connection structure |
| CN106523507A (en) * | 2016-12-02 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Bolt locking device |
| CN112145534A (en) * | 2019-06-27 | 2020-12-29 | 浙江华昌液压机械有限公司 | Nut anti-loosening structure |
| CN113586590A (en) * | 2021-08-02 | 2021-11-02 | 航天精工股份有限公司 | High-locking anti-crack mandrel and closing method thereof |
-
2013
- 2013-07-18 CN CN 201320428058 patent/CN203348282U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989063A (en) * | 2015-07-24 | 2015-10-21 | 杭州斯泰新材料技术有限公司 | Back bolt and connection structure |
| CN105064557A (en) * | 2015-07-24 | 2015-11-18 | 杭州斯泰新材料技术有限公司 | Improved screw-in type back bolt and connection structure |
| CN106523507A (en) * | 2016-12-02 | 2017-03-22 | 江西洪都航空工业集团有限责任公司 | Bolt locking device |
| CN112145534A (en) * | 2019-06-27 | 2020-12-29 | 浙江华昌液压机械有限公司 | Nut anti-loosening structure |
| CN113586590A (en) * | 2021-08-02 | 2021-11-02 | 航天精工股份有限公司 | High-locking anti-crack mandrel and closing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20150718 |
|
| EXPY | Termination of patent right or utility model |