CN220268177U - Lock bolt assembly with double fastening capability - Google Patents
Lock bolt assembly with double fastening capability Download PDFInfo
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- CN220268177U CN220268177U CN202321779866.8U CN202321779866U CN220268177U CN 220268177 U CN220268177 U CN 220268177U CN 202321779866 U CN202321779866 U CN 202321779866U CN 220268177 U CN220268177 U CN 220268177U
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Abstract
The utility model provides a locking bolt assembly with double fastening capacity, which comprises a bolt, a first nut and a second nut, wherein the bolt comprises a forward thread section and a reverse thread section, the first nut is connected to the forward thread section, the second nut is connected to the reverse thread section, a concave groove is formed in the surface, facing the first nut, of the second nut, and the diameter of the groove is larger than the outer diameter of the first nut; in the axial direction of the bolt, the depth of the groove is larger than the length of the first nut. After the first nut is screwed to fix the parts, the second nut can be screwed to fix the parts, so that the two nuts can provide fastening force, and the screwing directions of the two nuts are opposite, so that the two nuts can play a certain role in limiting each other to prevent loosening.
Description
Technical Field
The utility model relates to the technical field of fasteners, in particular to a lockbolt assembly with double fastening capability.
Background
A bolt is a fastener, also called a screw. Nuts are often provided for fastening the two parts.
The bolt is prevented from loosening by friction force generated by screw thread matching with the pretightening force. Traditional bolt structure is comparatively simple, through nut and bolt lug connection, but after a certain time or receive vibration influence, appear not hard up condition easily.
The double-nut anti-loosening technology is widely applied at present, but two nuts mainly play a role in limiting and loosening each other, and the fastening capability of one added nut is not reinforced, so the inventor considers the problem of how to endow the added nut with the fastening capability, and the improvement scheme of the application is generated
Disclosure of Invention
In view of the problems noted in the background art, the present utility model provides a lockbolt assembly with dual tightening capabilities, which has two nuts capable of providing tightening capabilities, and has better lockbolt capabilities.
The technical scheme of the utility model is realized as follows:
the anti-loose bolt assembly with double fastening capacity comprises a bolt, a first nut and a second nut, wherein the bolt comprises a forward threaded section and a reverse threaded section, the first nut is connected to the forward threaded section, the second nut is connected to the reverse threaded section, a concave groove is formed in the surface, facing the first nut, of the second nut, and the diameter of the groove is larger than the outer diameter of the first nut; in the axial direction of the bolt, the depth of the groove is larger than the length of the first nut.
The utility model is further provided that a pre-tightening spring is arranged between the first nut and the second nut, the pre-tightening spring is sleeved on the bolt, and two ends of the pre-tightening spring are respectively propped against the first nut and the second nut.
The utility model is further characterized in that the first nut and the second nut are respectively provided with a connecting groove for connecting the pre-tightening spring.
Through adopting above-mentioned technical scheme, after first nut and second nut all screw, the spring is in compression state, and the power of spring is exerted on first nut and second nut, forms the pretightning force on first nut and second nut, fixes a position the position of first nut and second nut through this pretightning force, so, one of them nut is not hard up must receive the influence of another nut, promotes locking ability so.
The utility model is further provided with a positioning screw hole communicated with the groove along the radial direction of the second nut, the positioning screw hole is internally connected with a positioning screw through threads, and the positioning screw abuts against the first nut.
The utility model further provides that the outer side of the first nut is sleeved with a positioning sleeve, the positioning sleeve is fixedly connected with the first nut in the circumferential direction, the positioning screw abuts against the positioning sleeve, and the hardness of the positioning sleeve is smaller than that of the positioning screw.
The utility model further provides that a plurality of positioning screw holes are arranged, and the plurality of positioning screw holes are uniformly arranged in the circumferential direction of the second nut.
Through adopting above-mentioned technical scheme, after first nut and second nut all screw, accessible set screw offsets with first nut and fixes a position the position of first nut and second nut, and two such nuts restrict each other, and one of them nut is not hard up must receive the influence of another nut, promotes locking ability so.
By adopting the technical scheme, the utility model has the beneficial effects that:
the lockbolt assembly with double fastening capability provided by the utility model has the advantages that after the first nut is screwed to fix the parts, the second nut can be screwed to fix the parts, so that the lockbolt assembly is equivalent to two nuts which can provide fastening force, and the screwing directions of the two nuts are opposite, so that the lockbolt assembly can play a certain role in mutually limiting and preventing looseness.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural diagram of a first embodiment of the present utility model.
Fig. 3 is a schematic structural diagram of a second embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model is illustrated below with reference to fig. 1-3:
the utility model provides a lockbolt subassembly with dual fastening ability, including bolt 1, first nut 2, second nut 3, bolt 1 includes forward screw thread section 11 and reverse screw thread section 12, the diameter of forward screw thread section 11 is greater than the diameter of reverse screw thread section 12, reverse screw thread section 12 is located forward screw thread section 11's front end, first nut 2 is connected on forward screw thread section 11, first nut 2 clockwise rotation is screwed, second nut 3 is connected on reverse screw thread section 12, second nut 3 anticlockwise rotation is screwed, above-mentioned is prior art, the following improvement technical scheme who is this application:
the surface of the second nut 3 facing the first nut 2 is provided with a concave groove 4, and the diameter of the groove 4 is larger than the outer diameter of the first nut 2; in the axial direction of the bolt 1, the depth of the groove 4 is greater than the length of the first nut 2, so that after the first nut 2 and the second nut 3 are screwed, the first nut 2 is positioned in the groove 4 in the second nut 3, the first nut and the second nut are not interfered with each other, the fastening capacity is improved by means of the fastening force of the two nuts, and the anti-loosening capacity is improved by means of the forward and reverse rotation of the two nuts.
In order to further improve the anti-loosening capacity, the following implementation structure is adopted:
and the implementation structure is as follows: a pre-tightening spring 5 is arranged between the first nut 2 and the second nut 3, the pre-tightening spring 5 is sleeved on the bolt 1, two ends of the pre-tightening spring 5 respectively prop against the first nut 2 and the second nut 3, and connecting grooves 6 for connecting the pre-tightening spring 5 are respectively arranged on the first nut 2 and the second nut 3. In the above technical scheme, after the pre-tightening spring 5 is compressed, elasticity is applied to the first nut 2 and the second nut 3, the first nut 2 and the second nut 3 are in a pre-tightening positioning connection state under the action of the elasticity, and the relative rotation of the first nut 2 and the second nut 3 needs to overcome the pre-tightening force, so that the anti-loosening capability is improved.
And the implementation structure II: the second nut 3 is radially provided with a plurality of positioning screw holes 7 communicated with the groove 4, the positioning screw holes 7 are uniformly arranged in the circumferential direction of the second nut 3, the positioning screw holes 7 are internally and spirally connected with positioning screws 8, and the positioning screws 8 are propped against the first nut 2. In the above technical scheme, set screw 8 and second nut 3 fixed connection, set screw 8 offsets with first nut 2 to be connected, forms the roof pressure, so carries out restriction location to first nut 2 and second nut 3, and first nut 2 and second nut 3 are in pretension location connected state under the effect of this roof pressure, and first nut 2 and second nut 3 take place relative rotation and need overcome this roof pressure, have so promoted locking ability.
The outside cover of first nut 2 is equipped with locating sleeve 9, and locating sleeve 9 and first nut 2 are at circumference fixed connection, and set screw 8 offsets with locating sleeve 9, and the hardness of locating sleeve 9 is less than the hardness of set screw 8. The locating sleeve 9 can be made of metal or plastic, and the locating sleeve 9 is arranged so that the locating screw 8 can be drilled into the locating sleeve 9, so that the jacking and locating of the locating screw 8 are stable and reliable, and accidental sliding cannot occur.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the utility model.
Claims (6)
1. The utility model provides a lockbolt subassembly with dual fastening ability, includes bolt, first nut, second nut, and the bolt includes forward screw thread section and reverse screw thread section, and first nut is connected on forward screw thread section, and the second nut is connected on reverse screw thread section, its characterized in that: the surface of the second nut facing the first nut is provided with a concave groove, and the diameter of the groove is larger than the outer diameter of the first nut; in the axial direction of the bolt, the depth of the groove is larger than the length of the first nut.
2. A double-fastening lockbolt assembly according to claim 1, wherein: a pre-tightening spring is arranged between the first nut and the second nut, the pre-tightening spring is sleeved on the bolt, and two ends of the pre-tightening spring are respectively propped against the first nut and the second nut.
3. A double-fastening lockbolt assembly according to claim 2, wherein: and the first nut and the second nut are respectively provided with a connecting groove for connecting the pre-tightening spring.
4. A double-fastening lockbolt assembly according to claim 1, wherein: and a positioning screw hole communicated with the groove is formed in the second nut along the radial direction of the second nut, a positioning screw is connected in the positioning screw hole in a threaded manner, and the positioning screw abuts against the first nut.
5. A double tightening lockbolt assembly according to claim 4, wherein: the outside cover of first nut be equipped with the locating sleeve, locating sleeve and first nut are in circumference fixed connection, and set screw offsets with the locating sleeve, and the hardness of locating sleeve is less than set screw's hardness.
6. A double tightening lockbolt assembly according to claim 4, wherein: the positioning screw holes are formed in a plurality of positions, and the positioning screw holes are uniformly arranged in the circumferential direction of the second nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321779866.8U CN220268177U (en) | 2023-07-07 | 2023-07-07 | Lock bolt assembly with double fastening capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321779866.8U CN220268177U (en) | 2023-07-07 | 2023-07-07 | Lock bolt assembly with double fastening capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220268177U true CN220268177U (en) | 2023-12-29 |
Family
ID=89306791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321779866.8U Active CN220268177U (en) | 2023-07-07 | 2023-07-07 | Lock bolt assembly with double fastening capability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220268177U (en) |
-
2023
- 2023-07-07 CN CN202321779866.8U patent/CN220268177U/en active Active
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