CN205036703U - Prevent demolising and decide moment combination nut - Google Patents
Prevent demolising and decide moment combination nut Download PDFInfo
- Publication number
- CN205036703U CN205036703U CN201520769133.5U CN201520769133U CN205036703U CN 205036703 U CN205036703 U CN 205036703U CN 201520769133 U CN201520769133 U CN 201520769133U CN 205036703 U CN205036703 U CN 205036703U
- Authority
- CN
- China
- Prior art keywords
- round nut
- pin
- nut
- diameter
- hexagon cover
- Prior art date
- 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
Links
- 230000004323 axial length Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 7
- 231100001261 hazardous Toxicity 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000010586 diagram 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
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
- F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
- F16B31/021—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
Abstract
The utility model discloses a prevent demolising and decide moment combination nut should make up the nut and comprise round nut, hexagon cover and pin, and the round nut appearance be two coaxial but cylinders that the diameter is inequality, and the less end of round nut inserts the great end of second grade through -hole, three for oval post structure of pinning, and the while of respectively pinning is inserted perpendicularly in corresponding the cotter hole I and cotter hole II. When the installation, when moment reached a definite value, three pin can be cut off, and the hexagon cover also separates with the round nut. Because the anti shear strength of pin is certain, consequently realized deciding the moment installation, hexagon cover after -separating is on only the bolt is stayed to the round nut, and consequently the unable centre gripping of general purpose tool can avoid common tool to demolish.
Description
Technical field
The utility model relates to a kind of assembled nut, belongs to fastening piece, especially can determine moment and install and the assembled nut that simple tool can not be used to remove after installation.
Background technique
Nut is a kind of conventional fastening piece, and usual and bolt combination completes fastening function.At some Code in Hazardous Special Locations, if nut install time moment too conference destroy fastening object, again can not be reliably fastening if moment is too little, therefore need nut can determine moment to install, simultaneously, because there is safety requirement, do not wish that nut can use general tool (as spanner, sleeve etc.) to remove after installing yet.Nut conventional at present does not possess determines moment installation function, and general tool can also be used to remove after installing, and cannot meet this type of Code in Hazardous Special Locations demand.
Summary of the invention
For the specific demand existed at present, the utility model devises a kind of anti-dismounting and determines moment assembled nut, and its scheme taked is:
This assembled nut is by round nut, hexagon cover and pin composition, round nut profile is two coaxial but cylindrical bodys that diameter is not identical, round nut center has screw hole vertically, the external lateral portion of round nut has three circular pin nail I with diameter vertically, each pin hole I central shaft is parallel with round nut central shaft, and their center of circle, cross section is circumferentially uniformly distributed at round nut place, hexagon cover profile is positive hexagonal prism structure, hexagon cover center has circular secondary through holes vertically, the external lateral portion that hexagon puts has three circular pin nail II with diameter vertically, it is parallel that each pin hole II central shaft and hexagon overlap central shaft, and their center of circle, cross section is circumferentially uniformly distributed at hexagon cover place, the secondary through holes comparatively Outside diameter being slightly less than hexagon cover compared with the diameter of small end of round nut, the degree of depth equaling the larger end of secondary through holes of hexagon cover compared with the axial length of small end of round nut, be greater than the large footpath of screw hole compared with the diameter of small end in secondary through holes, each pin hole I and each pin hole II is with diameter and the upper and lower one_to_one corresponding in position, the larger end being inserted into secondary through holes compared with small end of round nut, pin is three of long cylinder structure, and each pin is vertically inserted in corresponding pin hole I and pin hole II simultaneously.
When mounted, when moment reaches certain value, three pins can be cut off the utility model, and hexagon cover is also separated with round nut.Because the shear strength of pin is certain, therefore achieve and determine moment installation, after hexagon cover is separated, only round nut is stayed on bolt, and general purpose tool cannot clamp, and general tool therefore can be avoided to remove.The utility model uses simple, can realize determining moment well and install and anti-dismounting.
Accompanying drawing explanation
Fig. 1 is schematic appearance of the present utility model;
Fig. 2 is the utility model semi-section schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
As depicted in figs. 1 and 2, round nut 1 profile is two coaxial but cylindrical bodys that diameter is not identical, round nut 1 center has screw hole 11 vertically, the external lateral portion of round nut 1 has three circular pin nail I12 with diameter vertically, each pin hole I12 central shaft is parallel with round nut 1 central shaft, and their center of circle, cross section is circumferentially uniformly distributed at round nut 1 place.It is positive hexagonal prism structure that hexagon overlaps 2 profiles, hexagon overlaps 2 centers and has circular secondary through holes 21 vertically, external lateral portion on hexagon cover 2 has three circular pin nail II22 with diameter vertically, it is parallel that each pin hole II22 central shaft and hexagon overlap 2 central shafts, and their center of circle, cross section is overlapped 2 places at hexagon and is circumferentially uniformly distributed.The secondary through holes 21 comparatively Outside diameter being slightly less than hexagon cover 2 compared with the diameter of small end of round nut 1, the degree of depth equaling the larger end of secondary through holes 21 of hexagon cover 2 compared with the axial length of small end of round nut 1, be greater than the large footpath of screw hole 11 compared with the diameter of small end in secondary through holes 21, each pin hole I12 and each pin hole II22 is with diameter and the upper and lower one_to_one corresponding in position, the larger end being inserted into secondary through holes 21 compared with small end of round nut 1, pin 3 is three of long cylinder structure, each pin 3 is vertically inserted in corresponding pin hole I12 and pin hole II22 simultaneously, it is interference fit between them.
During installation, round nut 1 is twisted and receives on same specification bolt, use tool holding at hexagon cover 2 and tighten, along with the moment of instrument strengthens gradually, the shearing force suffered by pin 3 also strengthens, when shearing force is greater than the ability to bear of pin 3, pin 3 is cut off, and hexagon cover 2 is separated with round nut 1.Because the shear strength of pin 3 is certain, therefore achieve and determine moment installation, after hexagon cover 2 is separated, only round nut 1 is stayed on bolt, and general purpose tool cannot clamp, and general tool therefore can be avoided to remove.By adjusting the diameter of pin 3, pin hole I12 and pin hole II22 simultaneously, can the mounting torque of Indirect method assembled nut.
Claims (1)
1. moment assembled nut is determined in an anti-dismounting, by round nut (1), hexagon cover (2) and pin (3) composition, it is characterized in that: round nut (1) profile is two coaxial but cylindrical bodys that diameter is not identical, round nut (1) center has screw hole (11) vertically, the external lateral portion of round nut (1) has three circular pin nail I(12 with diameter vertically), each pin hole I(12) central shaft is parallel with round nut (1) central shaft, and their center of circle, cross section is circumferentially uniformly distributed at round nut (1) place, hexagon cover (2) profile is positive hexagonal prism structure, hexagon cover (2) center has circular secondary through holes (21) vertically, external lateral portion on hexagon cover (2) has three circular pin nail II(22 with diameter vertically), each pin hole II(22) central shaft is parallel with hexagon cover (2) central shaft, and their center of circle, cross section is circumferentially uniformly distributed at hexagon cover (2) place, secondary through holes (21) the comparatively Outside diameter being slightly less than hexagon cover (2) compared with the diameter of small end of round nut (1), the degree of depth equaling secondary through holes (21) the larger end of hexagon cover (2) compared with the axial length of small end of round nut (1), be greater than the large footpath of screw hole (11) compared with the diameter of small end in secondary through holes (21), each pin hole I(12) and each pin hole II(22) with diameter and the upper and lower one_to_one corresponding in position, the comparatively small end of round nut (1) is inserted into the larger end of secondary through holes (21), three that pin (3) is long cylinder structure, each pin (3) is vertically inserted into corresponding pin hole I(12 simultaneously) and pin hole II(22) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520769133.5U CN205036703U (en) | 2015-10-08 | 2015-10-08 | Prevent demolising and decide moment combination nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520769133.5U CN205036703U (en) | 2015-10-08 | 2015-10-08 | Prevent demolising and decide moment combination nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205036703U true CN205036703U (en) | 2016-02-17 |
Family
ID=55295608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520769133.5U Expired - Fee Related CN205036703U (en) | 2015-10-08 | 2015-10-08 | Prevent demolising and decide moment combination nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205036703U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134739A (en) * | 2015-10-08 | 2015-12-09 | 国网山东省电力公司泰安供电公司 | Anti-dismantling fixed-torque combined nut |
-
2015
- 2015-10-08 CN CN201520769133.5U patent/CN205036703U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134739A (en) * | 2015-10-08 | 2015-12-09 | 国网山东省电力公司泰安供电公司 | Anti-dismantling fixed-torque combined nut |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20171008 |