CN207278681U - A kind of check bolt group - Google Patents
A kind of check bolt group Download PDFInfo
- Publication number
- CN207278681U CN207278681U CN201721350870.7U CN201721350870U CN207278681U CN 207278681 U CN207278681 U CN 207278681U CN 201721350870 U CN201721350870 U CN 201721350870U CN 207278681 U CN207278681 U CN 207278681U
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- CN
- China
- Prior art keywords
- nut
- swelling
- cavity
- expansion
- expansion cone
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Abstract
The utility model discloses a kind of check bolt group, including fastening bolt, clamp nut, expansion cone, swelling column, swelling nut；The fastening bolt includes nut and is connected to the screw rod of nut bottom centre；The cylinder groove of accommodating swelling nut is provided with the top of the nut；The bottom of the cylinder groove is connected with the expansion cavity of accommodating expansion cone；The expansion cavity extends to the bottom of screw rod, and circular open is formed in screw rod bottom；The swelling column and expansion cone are connected as one from top to bottom；The side surface of the swelling column is provided with the first screw thread for coordinating swelling nut to use；The side surface of the screw rod is provided with the second screw thread for coordinating clamp nut to use.The defects of fastening bolt center drilling intensity declines is compensate for, so as to greatly reinforce the anti-loosening property of nut, improves the security of machine components installation；Also, a whole set of bolt group is simple in structure, easy for assemble or unload, strong applicability.
Description
Technical field
Mechanical equipment technical field is the utility model is related to, is a kind of check bolt group specifically.
Background technology
Bolt increases and decreases frictional force by pre-fastening moment between worm drive pair, primarily serve connection parts effect but
It is under the action of shock and vibration or varying load, the frictional force between screw pair instantaneously may reduce or disappear, and bolt occurs certainly
The dynamic phenomenon loosened, this will cause extremely serious consequence in production practices, produce great security risk, and current institute
The bolt Relaxation Methods of use, mainly have mechanical locking, locking and permanent locking, common mechanical locking main utilize of rubbing to open
The methods of mouth pin, locked spacer and string steel wire rope, extra part is added, and anti-loosing effect is unsatisfactory, and common rubs
Wipe it is locking mainly have using gasket, self-locking nut and double nut etc., its anti-loosing effect can not meet such as high ferro security will
Seek the requirement of higher row industry, and permanent locking need to destroy original screw thread pair so that nut can not be dismantled in maintenance,
Nut and screw rod can not recycle.
Utility model content
The purpose of this utility model is to provide a kind of check bolt group, to solve mechanical locking, friction in the prior art
Locking anti-loosing effect is undesirable, it is impossible to the defects of meeting security requirement higher industry requirement.
The utility model is achieved through the following technical solutions：A kind of check bolt group, including fastening bolt, clamp nut,
Expansion cone, swelling column, swelling nut；The fastening bolt includes nut and is connected to the screw rod of nut bottom centre；The spiral shell
The cylinder groove of accommodating swelling nut is provided with the top of cap；The expansion that the bottom of the cylinder groove is connected with accommodating expansion cone is empty
Chamber；The expansion cavity extends to the bottom of screw rod, and circular open is formed in screw rod bottom；The swelling column and expansion cone are from upper
It is connected as one under；The side surface of the swelling column is provided with the first screw thread for coordinating swelling nut to use；The screw rod
Side surface is provided with the second screw thread for coordinating clamp nut to use.
Its operation principle：Fastening bolt is connected with clamp nut by the second screw-threaded coupling on screw rod side wall, is being fastened
After the locking connection of bolt and clamp nut, to screw rod bottom circular opening the swelling column and expansion cone being connected as one
It is inserted into expansion cavity, swelling column is filled to expansion cavity, expansion cone is filled to expansion cavity, promotes the bottom of expansion cone
Portion, rises above the position at the top of nut at the top of swelling column, and the part that swelling column is emerged passes through set on its side wall
The screw thread put is locked with swelling nut.
When expansion cone fills expansion space, according to expansion chamber and the wedge structure characteristic of expansion cone, promote screw rod at it
The expansion of outside diameter occurs in the elastic range of material itself, reaches expansion effect, allows threaded connection on swelling nut and screw rod
It is more stable.And expansion cone and swelling column are securely seated between in expansion chamber by swelling nut, prevent expansion cone from expansion chamber
Bottom opening at drop away.
In order to preferably realize the utility model, further, the expansion cavity includes being connected to cylinder trench bottom
First cavity and the second cavity for being connected to the first cavity bottom；First cavity is cylindrical cavity, and cylindrical cavity is straight
Footpath is more than the diameter of swelling column.First space can house swollen well according to the setting size of its style characteristic and its diameter
Tight column, second space is also according to its style characteristic and its is sized to house expansion cone well, its first cavity and second
Cavity can effectively act as the accurate position-limiting action to expansion cone and swelling column.
In order to preferably realize the utility model, further, second cavity is conical cavity, and cone is empty
The angle of inclination of cavity wall is identical with the angle of inclination of expansion cone outer wall.By conical cavity, and its cavity inner wall and expansion cone
Outer wall identical angle of inclination is set, well expansion cone can be allowed to be filled, allow expansion cone screw rod in progradation
Stably deform upon, to prevent the damage to its screw-rod structure.
In order to preferably realize the utility model, further, the top disc diameter of second cavity is more than expansion
Vertex of a cone end disc diameter.The setting of expansion cone top disc diameter is more than by the top disc diameter of the second cavity, can be made
Expansion cone can hold out against the inner wall of the second cavity by the pyramidal structure of oneself, allow its screw rod to expand deformation, tight to prevent
Fixing bolt is not fallen out.
In order to preferably realize the utility model, further, the diameter of the cylinder groove is more than the outside diameter of swelling nut.
The setting of swelling nut outside diameter is more than by the diameter of cylinder groove, facilitates us when in use, there can be enough spaces to swollen
Tight nut is adjusted and operates, so as to adjust the expansion deformation degree of screw rod well.
The utility model compared with prior art, has the following advantages and beneficial effect：
Endoporus is processed in fastening bolt, swelling device, fastening bolt and clamp nut mating connection work are installed in endoporus
Part, then screwing by swelling column and swelling nut, cause fastening bolt lateral expansion to deform, and cause clamp nut can not pine
It is de-, and rely on conical bore on the inside of fastening bolt to tense swelling nut to the reaction force of swelling column, prevent swelling nut from loosening；Will
Swelling device is arranged in the endoporus of fastening bolt so that fastening bolt length is constant, and swelling device is placed in endoporus, also mends
The defects of fastening bolt center drilling intensity declines has been repaid, so as to greatly reinforce the anti-loosening property of nut, has improved machine components
The security of installation；Also, a whole set of bolt group is simple in structure, easy for assemble or unload, strong applicability.
Brief description of the drawings
Fig. 1 is the sectional view of the utility model；
Fig. 2 is the front view of the utility model.
Wherein, 1, fastening bolt；2nd, screw flight；3rd, clamp nut；4th, expansion cone；5th, cylinder groove；6th, swelling nut；
7th, swelling male screw；8th, swelling column.
Embodiment
Embodiment 1：
A kind of check bolt group of the present embodiment, as depicted in figs. 1 and 2：Including fastening bolt 1, clamp nut 3, expansion
Cone 4, swelling column 8, swelling nut 6；The fastening bolt 1 includes nut and is connected to the screw rod of nut bottom centre；The spiral shell
The cylinder groove 5 of accommodating swelling nut 6 is provided with the top of cap；The bottom of the cylinder groove 5 is connected with the expansion of accommodating expansion cone 4
Cavity；The expansion cavity extends to the bottom of screw rod, and circular open is formed in screw rod bottom；The swelling column 8 and expansion cone 4
It is connected as one from top to bottom；The side surface of the swelling column 8 is provided with the first screw thread for coordinating swelling nut 6 to use；It is described
The side surface of screw rod is provided with the second screw thread for coordinating clamp nut 3 to use.
Its operation principle：Fastening bolt 1 is connected with clamp nut 3 by the second screw-threaded coupling on screw rod side wall, tight
After the locking connection of fixing bolt 1 and clamp nut 3, to screw rod bottom circular opening 8 He of swelling column being connected as one
Expansion cone 4 is inserted into expansion cavity, in the filling of swelling column 8 to expansion cavity, in the filling of expansion cone 4 to expansion cavity, is promoted
The bottom of expansion cone 4, until the top of swelling column 8 rises above the position at the top of nut, the part that swelling column 8 is emerged passes through
Set screw thread is locked with swelling nut 6 on its side wall.
When expansion cone 4 fills expansion space, according to expansion chamber and the wedge structure characteristic of expansion cone 4, screw rod is promoted to exist
The expansion of outside diameter occurs in the elastic range of itself material, reaches expansion effect, the screw thread allowed on swelling nut 6 and screw rod connects
Connect more stable.And expansion cone 4 and swelling column 8 are securely seated between in expansion chamber by swelling nut 6, prevent expansion cone 4 from
Drop away at the bottom opening of expansion chamber.
Embodiment 2：
The present embodiment does further optimization on the basis of embodiment 1, and the expansion cavity includes being connected to 5 bottom of cylinder groove
First cavity in portion and the second cavity for being connected to the first cavity bottom；First cavity is cylindrical cavity, and cylindrical cavity
Diameter be more than swelling column 8 diameter.First space can hold well according to the setting size of its style characteristic and its diameter
Swelling column 8 is put, second space is also according to its style characteristic and its is sized to house expansion cone 4 well, its first cavity
The accurate position-limiting action to expansion cone 4 and swelling column 8 can be effectively acted as with the second cavity.
Second cavity is conical cavity, and the angle of inclination of conical cavity inner wall and 4 outer wall of expansion cone incline
Rake angle is identical.By conical cavity, and the angle of inclination that its cavity inner wall is identical with the outer wall setting of expansion cone 4, Neng Gouliang
Allow expansion cone 4 to be filled well, allow the screw rod in progradation of expansion cone 4 stably to deform upon, to prevent to its screw rod
The damage of structure.
The top disc diameter of second cavity is more than 4 top disc diameter of expansion cone.Pass through the top of the second cavity
Disc diameter is more than the setting of 4 top disc diameter of expansion cone, and expansion cone 4 can be enable to be held out against by the pyramidal structure of oneself
The inner wall of second cavity, allows its screw rod to expand deformation, to prevent fastening bolt 1 from not falling out.
The diameter of the cylinder groove 5 is more than the outside diameter of swelling nut 6.It is more than by the diameter of cylinder groove 5 outside swelling nut 6
The setting in footpath, facilitates us when in use, can have enough spaces to be adjusted and operate swelling nut 6, so as to
The expansion deformation degree to screw rod is adjusted well.
The other parts of the present embodiment are same as Example 1, and so it will not be repeated.
Embodiment 3：
In the present embodiment, a kind of check bolt group, including fastening bolt 1, screw flight 2, clamp nut 3, expansion cone
4th, cylindrical hole 5, swelling nut 6, swelling male screw 7, swelling column 8.Wherein 1 outside cylinder of fastening bolt is machined with screw flight 2, spiral shell
Clamp nut 3 is installed on bar screw thread 2, the cylindrical hole and conical bore coaxial with fastening bolt 1 are machined with inside fastening bolt 1.
1 head of fastening bolt is machined with concave cylinder groove 5.
Swelling column 8 corresponding with internal via shape is installed, 8 bottom of swelling column is circular cone, and top is in 1 endoporus of fastening bolt
Threaded 7 cylinder, and swelling nut 6 coordinates with swelling male screw 7.
When using the check bolt group, first clamp nut 3 is screwed with fastening bolt 1 and is connected, connected workpiece, then make
Swelling nut 6 is screwed with swelling column 8 with ut socket and is connected, pulls expansion cone 4 to move, expands the taper hole in fastening bolt 1
Deformation, causes the corresponding cylindrical dilatating and deformable of taper hole in fastening bolt 1, prevents in use that fastening bolt 1 is downwards
Abjection.1 taper hole of fastening bolt is applied to the reaction force of expansion cone 4 again so that expansion cone 4 tenses swelling nut 6 at the same time, anti-
Only swelling nut 6 loosens.
The above, is only the preferred embodiment of the utility model, and limit in any form is not done to the utility model
System, every any simple modification made according to the technical essence of the utility model to above example, equivalent variations, each falls within
Within the scope of protection of the utility model.
Claims (5)
- A kind of 1. check bolt group, it is characterised in that：Including fastening bolt（1）, clamp nut（3）, expansion cone（4）, swelling column （8）, swelling nut（6）；The fastening bolt（1）Including nut and the screw rod for being connected to nut bottom centre；The nut Top is provided with accommodating swelling nut（6）Cylinder groove（5）；The cylinder groove（5）Bottom be connected with accommodating expansion cone（4）'s Expand cavity；The expansion cavity extends to the bottom of screw rod, and circular open is formed in screw rod bottom；The swelling column（8）With Expansion cone（4）It is connected as one from top to bottom；The swelling column（8）Side surface be provided with coordinate swelling nut（6）Use First screw thread；The side surface of the screw rod is provided with cooperation clamp nut（3）The second screw thread used.
- A kind of 2. check bolt group according to claim 1, it is characterised in that：The expansion cavity includes being connected to cylinder Groove（5）First cavity of bottom and the second cavity for being connected to the first cavity bottom；First cavity is cylindrical cavity, and circle The diameter of column cavity is more than swelling column（8）Diameter.
- A kind of 3. check bolt group according to claim 2, it is characterised in that：Second cavity is conical cavity, And angle of inclination and the expansion cone of conical cavity inner wall（4）The angle of inclination of outer wall is identical.
- A kind of 4. check bolt group according to claim 3, it is characterised in that：The top disc diameter of second cavity More than expansion cone（4）Top disc diameter.
- 5. according to a kind of check bolt group of claim 1-4 any one of them, it is characterised in that：The cylinder groove（5）It is straight Footpath is more than swelling nut（6）Outside diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721350870.7U CN207278681U (en) | 2017-10-19 | 2017-10-19 | A kind of check bolt group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721350870.7U CN207278681U (en) | 2017-10-19 | 2017-10-19 | A kind of check bolt group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207278681U true CN207278681U (en) | 2018-04-27 |
Family
ID=61980824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721350870.7U Expired - Fee Related CN207278681U (en) | 2017-10-19 | 2017-10-19 | A kind of check bolt group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207278681U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441926A (en) * | 2018-12-20 | 2019-03-08 | 海盐华通金属制品有限公司 | A kind of expansion nut of top closure |
| CN109737126A (en) * | 2018-11-12 | 2019-05-10 | 陈红印 | Superpower anti-slip bolt |
| CN113386161A (en) * | 2021-07-05 | 2021-09-14 | 四川中科彭成机器人技术有限公司 | Creep-resistant rope-driven mechanical finger |
-
2017
- 2017-10-19 CN CN201721350870.7U patent/CN207278681U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737126A (en) * | 2018-11-12 | 2019-05-10 | 陈红印 | Superpower anti-slip bolt |
| CN109441926A (en) * | 2018-12-20 | 2019-03-08 | 海盐华通金属制品有限公司 | A kind of expansion nut of top closure |
| CN113386161A (en) * | 2021-07-05 | 2021-09-14 | 四川中科彭成机器人技术有限公司 | Creep-resistant rope-driven mechanical finger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180427 Termination date: 20211019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |