CN106286534A - A kind of pretension bolt assembly - Google Patents
A kind of pretension bolt assembly Download PDFInfo
- Publication number
- CN106286534A CN106286534A CN201510266732.XA CN201510266732A CN106286534A CN 106286534 A CN106286534 A CN 106286534A CN 201510266732 A CN201510266732 A CN 201510266732A CN 106286534 A CN106286534 A CN 106286534A
- Authority
- CN
- China
- Prior art keywords
- cavity
- push rod
- screw rod
- threaded portion
- rod
- 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.)
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Abstract
The invention discloses a kind of pretension bolt assembly, including bolt body and nut with matching, the screw rod of bolt body offers a cavity, the end of cavity is provided with female thread, also include the push rod in being arranged in cavity, one end of push rod is for holding out against the bottom of cavity, the other end of push rod is provided with the threaded portion matched with female thread, push rod is further opened with passage, passage one end connects described cavity, its other end is connected with outlet side after tightening end through described threaded portion, an air inlet being connected with cavity it is further opened with on the bolt head of bolt body.The present invention is by offering cavity in screw rod, and push rod is set in cavity, in use, being passed through high-temperature steam heating spiral rod, screw rod expanded by heating extends, and by the cooperation of female thread and threaded portion, screw rod stretching is produced elastic deformation, then nut is tightened with screw rod, after unclamping push rod, screw rod shrinks, and the pretightning force of nut and screw rod is greatly improved.
Description
Technical field
The present invention relates to bolt technical field, particularly relate to a kind of pretension bolt assembly.
Background technology
In large pressing machine, large-scale engineering machinery, it is required for using spiral shell between the big part such as column, workbench
Bolt connects closing.At present, generally connect with king-bolt when each parts connect, but king-bolt is realized pre-
Tightly, pretightning force requires greatly, the most feasible way.
Summary of the invention
The present invention mainly solves the technical problem in the presence of prior art, thus provides one can be effectively improved
The pretension bolt assembly of bolt pretightening.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals:
A kind of pretension bolt assembly of the present invention, including bolt body and nut with matching, described spiral shell
Offering a cavity in the screw rod of bolt body, the degree of depth of described cavity is more than the length of described screw rod, described sky
The end in chamber is provided with female thread, also includes the push rod in being arranged in described cavity, one end of described push rod
For holding out against the bottom of described cavity, the other end of described push rod is provided with the screw thread matched with described female thread
Portion, and the length of described push rod is more than the degree of depth of described cavity, the end of described threaded portion be additionally provided with one for
Reverse the end of tightening of described push rod, described push rod is further opened with one for being passed through the passage of high-temperature steam, institute
State passage one end and connect described cavity, its other end through described threaded portion and tighten after end with outlet side phase
Connect, the bolt head of described bolt body is further opened with an air inlet being connected with described cavity, described
An inlet suction port it is also equipped with on air inlet.
Further, described air inlet and described cavity eccentric setting.
Further, described cavity inner wall is further opened with helicla flute.
Further, the bottom shape of described cavity is taper, and the end shape of described push rod is spherical.
Compared with prior art, it is an advantage of the current invention that: by offering cavity in screw rod, and at sky
Intracavity arranges push rod, in use, is passed through high-temperature steam heating spiral rod, and screw rod expanded by heating extends, and passes through
Screw rod stretching is produced elastic deformation by the cooperation of female thread and threaded portion, is then tightened with screw rod by nut, pine
After driving push rod, screw rod shrinks, and the pretightning force of nut and screw rod is greatly improved.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the pretension bolt assembly in the present invention；
Fig. 2 is the partial enlarged view in Fig. 1 at I；
Fig. 3 is the partial enlarged view in Fig. 1 at II.
Detailed description of the invention
Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail so that advantages of the present invention and
Feature can be easier to be readily appreciated by one skilled in the art, thus makes protection scope of the present invention apparent
Clear and definite defines.
Refering to shown in Fig. 1 to Fig. 3, a kind of pretension bolt assembly of the present invention, including bolt body 1 and with
The nut 2 matched, the screw rod 11 of bolt body 1 offers a cavity 12, the degree of depth of cavity 12
More than the length of screw rod 11, the end of cavity 12 is provided with female thread 13, also includes one for being arranged in cavity
Push rod 3 in 12, one end of push rod 3 for holding out against the bottom of cavity 12, the other end of push rod 3 be provided with
The threaded portion 31 that female thread 13 matches, and the length of push rod 3 is more than the degree of depth of cavity 12, threaded portion 31
End be additionally provided with one and tighten end 32 for reverse push rod 3, push rod 3 is further opened with one for being passed through high temperature
The passage 34 of steam, passage 34 one end connection cavity 12, its other end is through threaded portion 31 and tightens
End 32 after be connected with outlet side 33, the bolt head 14 of bolt body 1 is further opened with one with cavity 12
The air inlet 15 being connected, air inlet is also equipped with an inlet suction port 16.By offering in screw rod 11
Cavity 12, and push rod 3 is set in cavity 12, in use, it is passed through high-temperature steam heating spiral rod 11,
Screw rod 11 expanded by heating extends, and by the cooperation of female thread 13 and threaded portion 31, screw rod 11 is stretched generation
Elastic deformation, then tightens nut 2 with screw rod 11, and after unclamping push rod 3, screw rod 11 shrinks, spiral shell
The pretightning force of mother 2 and screw rod 11 is greatly improved.
In the present embodiment, air inlet 15 and cavity 12 eccentric setting.The high temperature being passed through by air inlet 15
Steam rotates along cavity 12 inwall and moves downward heating cavities 12 inwall, and efficiency is high.Cavity 12 inwall is also opened
It is provided with helicla flute 35.The guiding of the high-temperature steam receipts helicla flute 35 entering passage 15 rotates along helicla flute 35,
Efficiency is high.The bottom shape of cavity 12 is taper, and the end shape of push rod 3 is spherical.Push rod 3 and cavity
Being linear contact lay bottom 12, when push rod 3 rotates, frictional force is little, conveniently tightens.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
This, any change expected without creative work or replacement, all should contain in protection scope of the present invention
Within.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims are limited.
Claims (4)
1. a pretension bolt assembly, it is characterised in that: include bolt body (1) and with matching
Nut (2), offers a cavity (12), described cavity in the screw rod (11) of described bolt body (1)
(12) the degree of depth is more than the length of described screw rod (11), and the end of described cavity (12) is provided with female thread
(13), a push rod (3) in being arranged in described cavity (12) is also included, described push rod (3)
One end is used for holding out against the bottom of described cavity (12), and the other end of described push rod (3) is provided with and described interior spiral shell
The threaded portion (31) that stricture of vagina (13) matches, and the length of described push rod (3) is more than described cavity (12)
The degree of depth, the end of described threaded portion (31) is additionally provided with one and tightens end (32) for reverse described push rod (3),
Described push rod (3) is further opened with one for being passed through the passage (34) of high-temperature steam, described passage (34)
One end connect described cavity (12), its other end through described threaded portion (31) and tighten end (32) afterwards with
Outlet side (33) is connected, and the bolt head (14) of described bolt body (1) is further opened with one with described
The air inlet (15) that cavity (12) is connected, described air inlet is also equipped with an inlet suction port (16).
Pretension bolt assembly the most according to claim 1, it is characterised in that: described air inlet (15)
With described cavity (12) eccentric setting.
Pretension bolt assembly the most according to claim 2, it is characterised in that: in described cavity (12)
Wall is further opened with helicla flute (35).
Pretension bolt assembly the most according to claim 3, it is characterised in that: described cavity (12)
Bottom shape is taper, and the end shape of described push rod (3) is spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266732.XA CN106286534A (en) | 2015-05-22 | 2015-05-22 | A kind of pretension bolt assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266732.XA CN106286534A (en) | 2015-05-22 | 2015-05-22 | A kind of pretension bolt assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106286534A true CN106286534A (en) | 2017-01-04 |
Family
ID=57633677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510266732.XA Pending CN106286534A (en) | 2015-05-22 | 2015-05-22 | A kind of pretension bolt assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106286534A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424612A (en) * | 2017-08-25 | 2019-03-05 | 富泰华工业（深圳）有限公司 | Setscrew and the locking method for using setscrew |
| CN111963544A (en) * | 2020-07-30 | 2020-11-20 | 江苏永昊高强度螺栓有限公司 | Bolt fastener suitable for severe cold weather and production method of bolt |
| CN113251053A (en) * | 2021-04-07 | 2021-08-13 | 江苏永昊高强度螺栓有限公司 | Bolt fastener suitable for severe cold weather |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4793578A (en) * | 1987-11-09 | 1988-12-27 | Howard Harold L | Multiple conduit support system |
| FR2865788A1 (en) * | 2004-01-29 | 2005-08-05 | Sarl Francois Inglese | Clamp fixing device for e.g. plumber, has rod with intermediate module, at one end, from which clamp is fixed, where module has two threaded parts with different diameters and rod is bent with bend |
| CN101280821A (en) * | 2008-04-23 | 2008-10-08 | 宁波东港紧固件制造有限公司 | Tighten positioning bolt |
| CN203476989U (en) * | 2013-08-26 | 2014-03-12 | 永嘉县永乐高中压标准件有限公司 | Hexagonal bolt with tool |
| CN203730513U (en) * | 2014-03-13 | 2014-07-23 | 温州市强杰不锈钢标准件有限公司 | Novel bolt |
| CN105650095A (en) * | 2014-10-09 | 2016-06-08 | 遵义遵宏螺杆厂 | Pre-tightening bolt assembly |
-
2015
- 2015-05-22 CN CN201510266732.XA patent/CN106286534A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4793578A (en) * | 1987-11-09 | 1988-12-27 | Howard Harold L | Multiple conduit support system |
| FR2865788A1 (en) * | 2004-01-29 | 2005-08-05 | Sarl Francois Inglese | Clamp fixing device for e.g. plumber, has rod with intermediate module, at one end, from which clamp is fixed, where module has two threaded parts with different diameters and rod is bent with bend |
| CN101280821A (en) * | 2008-04-23 | 2008-10-08 | 宁波东港紧固件制造有限公司 | Tighten positioning bolt |
| CN203476989U (en) * | 2013-08-26 | 2014-03-12 | 永嘉县永乐高中压标准件有限公司 | Hexagonal bolt with tool |
| CN203730513U (en) * | 2014-03-13 | 2014-07-23 | 温州市强杰不锈钢标准件有限公司 | Novel bolt |
| CN105650095A (en) * | 2014-10-09 | 2016-06-08 | 遵义遵宏螺杆厂 | Pre-tightening bolt assembly |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424612A (en) * | 2017-08-25 | 2019-03-05 | 富泰华工业（深圳）有限公司 | Setscrew and the locking method for using setscrew |
| CN109424612B (en) * | 2017-08-25 | 2022-02-08 | 富泰华工业（深圳）有限公司 | Expansion screw and locking method using same |
| CN111963544A (en) * | 2020-07-30 | 2020-11-20 | 江苏永昊高强度螺栓有限公司 | Bolt fastener suitable for severe cold weather and production method of bolt |
| CN111963544B (en) * | 2020-07-30 | 2021-12-24 | 江苏永昊高强度螺栓有限公司 | Bolt fastener suitable for severe cold weather and production method of bolt |
| CN113251053A (en) * | 2021-04-07 | 2021-08-13 | 江苏永昊高强度螺栓有限公司 | Bolt fastener suitable for severe cold weather |
| CN113251053B (en) * | 2021-04-07 | 2022-04-15 | 江苏永昊高强度螺栓有限公司 | Bolt fastener suitable for severe cold weather |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |