CN108775326A - A kind of flexible check bolt of nuclear power - Google Patents
A kind of flexible check bolt of nuclear power Download PDFInfo
- Publication number
- CN108775326A CN108775326A CN201810669803.4A CN201810669803A CN108775326A CN 108775326 A CN108775326 A CN 108775326A CN 201810669803 A CN201810669803 A CN 201810669803A CN 108775326 A CN108775326 A CN 108775326A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- kidney
- annular groove
- radius
- straight slot
- 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.)
- Pending
Links
- 230000000694 effects Effects 0.000 abstract description 4
- 230000035939 shock Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
-
- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
- F16B35/048—Specially-shaped necks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of flexible check bolts of nuclear power,Including screw head,First kidney-shaped annular groove,First screw rod,Second kidney-shaped annular groove,Second screw rod,Gasket,Nut and support rotation bolt,The bottom end of the screw head is equipped with the first kidney-shaped annular groove,The bottom end of the first kidney-shaped annular groove is connect with the first screw rod,The side of first kidney-shaped annular groove is to central axes direction indent,The radius of bottom surface is equal with the radius of screw head and the first screw rod respectively on first kidney-shaped annular groove,The bottom end of first screw rod is connected with the second kidney-shaped annular groove,The bottom end of the second kidney-shaped annular groove is connected with the second screw rod,The side of the second kidney-shaped annular groove is to central axes direction indent,The radius of bottom surface is equal with the radius of the first screw rod and the second screw rod respectively on second kidney-shaped annular groove,The radius of first screw rod is more than the radius of the second screw rod,Second screw rod is equipped with screw thread,Overall structure is simple,Intensity is big,Anti-loosing effect is good.
Description
【Technical field】
The present invention relates to the technical field of bolt, the technical field of the flexible check bolt of especially a kind of nuclear power.
【Background technology】
Bolt is widely used in the connection at the assembly such as nuclear power plant reactor pressure vessel and voltage-stablizer position, anti-to ensure
The normal work in core pressure vessel is answered, achievees the purpose that nuclear plant safety works, however equipment is in high temperature and pressure and high radiation
Under the operating condition of property, due to being washed away by flow, the vibrations of equipment or foreign matter enter the impact etc. after system to equipment
Various reasons, it is possible to cause the bolt looseness on existing equipment or even bolt falling, the bolt of loosening is not being tightened or more
In the case of changing, continuation is run under the working environment of high temperature and pressure, big flow and hot, it will is made to equipment and system
At the security risk of operation, the generation of nuclear safety accident is even resulted in, equipment after running for a long time, and apparatus body is
With high radioactivity, it can only be shielded by water under repair and maintaining, carry out remote operation and bolt is tightened up, it is very numb
It is tired.
【Invention content】
The purpose of the present invention is exactly to solve the problems of the prior art, proposes a kind of flexible check bolt of nuclear power, and first
Kidney-shaped annular groove and the second kidney-shaped annular groove reduce the degree of stress concentration, increase between screw head, the first screw rod and the second screw rod
The intensity of changeover portion；First straight slot and the second straight slot make the inside of the first screw rod hollow in part, reduce whole rigidity,
Energy of the bolt by shock and vibration when can be effectively absorbed, the flexibility of bolt is further increased；Support rotation bolt is logical by third
Slot screws in the second screw rod so that and even closer between nut and the second screw flight to be bonded, overall structure is simple, and intensity is big,
Anti-loosing effect is good.
To achieve the above object, the present invention proposes a kind of flexible check bolt of nuclear power, including screw head, the first kidney-shaped ring
Slot, the first screw rod, the second kidney-shaped annular groove, the second screw rod, gasket, nut and support rotation bolt, the bottom end of the screw head are equipped with the
The bottom end of one kidney-shaped annular groove, the first kidney-shaped annular groove is connect with the first screw rod, and the side of the first kidney-shaped annular groove is to central axes side
It concaves, the radius of bottom surface is equal with the radius of screw head and the first screw rod respectively on the first kidney-shaped annular groove, first screw rod
Bottom end be connected with the second kidney-shaped annular groove, the bottom end of the second kidney-shaped annular groove is connected with the second screw rod, second waist
The side of shape annular groove to central axes direction indent, on the second kidney-shaped annular groove the radius of bottom surface respectively with the first screw rod and the second spiral shell
The radius of bar is equal, and the radius of first screw rod is more than the radius of the second screw rod, and second screw rod is equipped with screw thread.
Preferably, the screw head further includes anti-skidding straight grain, four part of interior hexagonal, the first straight slot and the second straight slot, it is described
Anti-skidding straight grain is distributed in the side of screw head, and the top surface of the screw head is equipped with interior hexagonal, and the bottom surface of the interior hexagonal is equipped with first and leads to
Slot and the second straight slot, first straight slot and the second straight slot run through screw head and the first screw rod, and the radius of first straight slot is less than
Second straight slot, first straight slot are distributed around the second straight slot.
Preferably, being additionally provided with matte portion and sliding surface portion on first screw rod, the matte portion and sliding surface portion interval are set
It sets.
Preferably, the grooving and third straight slot of second screw rod being internally provided with through the second screw rod, the third
Straight slot connects with the second straight slot and radius is equal, and the inside of the third straight slot is equipped with screw thread.
Preferably, the support rotation bolt includes swing arm and rotation head, the swing arm is equipped with screw thread, and the radius of swing arm is bigger
It is equipped with cross pattern in the bottom surface of the radius of third straight slot, the rotation head.
Beneficial effects of the present invention：The present invention reduces stress concentration by the first kidney-shaped annular groove and the second kidney-shaped annular groove
Degree increases the intensity of changeover portion between screw head, the first screw rod and the second screw rod；First straight slot and the second straight slot make first
The inside of screw rod is hollow in part, reduces whole rigidity, can effectively absorb energy of the bolt by shock and vibration when, into
One step improves the flexibility of bolt；Support rotation bolt screws in the second screw rod by third straight slot so that nut and the second screw flight
Between even closer fitting, overall structure is simple, and intensity is big, and anti-loosing effect is good.
The feature and advantage of the present invention will be described in detail by embodiment combination attached drawing.
【Description of the drawings】
Fig. 1 is a kind of front view of the flexible check bolt of nuclear power of the present invention；
Fig. 2 is a kind of front view of the body of the flexible check bolt of nuclear power of the present invention；
Fig. 3 is a kind of vertical view of the screw head of the flexible check bolt of nuclear power of the present invention；
Fig. 4 is a kind of upward view of the second screw rod of the flexible check bolt of nuclear power of the present invention；
Fig. 5 is a kind of front view of the support rotation bolt of the flexible check bolt of nuclear power of the present invention；
Fig. 6 is a kind of upward view of the support rotation bolt of the flexible check bolt of nuclear power of the present invention.
In figure：Hexagonal, the first straight slots of 13-, the second straight slots of 14-, the first kidney-shapeds of 2- in the anti-skidding straight grain of 1- screw heads, 11-, 12-
Annular groove, the first screw rods of 3-, 31- matte portion, 32- sliding surfaces portion, the second kidney-shapeds of 4- annular groove, the second screw rods of 5-, 51- groovings, 52- thirds
Straight slot, 6- gaskets, 7- nuts, 8- support rotations bolt, 81- swing arms, 82- rotations head, 821- cross patterns.
【Specific implementation mode】
Refering to fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of flexible check bolt of nuclear power of the present invention, including screw head 1,
First kidney-shaped annular groove 2, the first screw rod 3, the second kidney-shaped annular groove 4, the second screw rod 5, gasket 6, nut 7 and support rotation bolt 8, it is described
The bottom end of screw head 1 is equipped with the first kidney-shaped annular groove 2, and the bottom end of the first kidney-shaped annular groove 2 is connect with the first screw rod 3, the first kidney-shaped
The side of annular groove 2 to central axes direction indent, on the first kidney-shaped annular groove 2 radius of bottom surface respectively with screw head 2 and the first screw rod 3
Radius it is equal, the bottom end of first screw rod 2 is connected with the second kidney-shaped annular groove 4, the bottom end of the second kidney-shaped annular groove 4 with
Second screw rod 5 is connected, and the side of the second kidney-shaped annular groove 4 is to central axes direction indent, bottom surface on the second kidney-shaped annular groove 4
Radius it is equal with the radius of the first screw rod 3 and the second screw rod 5 respectively, the radius of first screw rod 3 is more than the second screw rod 5
Radius, second screw rod 5 are equipped with screw thread, and the screw head 1 further includes anti-skidding straight grain 11, interior hexagonal 12,13 and of the first straight slot
Second straight slot, 14 4 part, the anti-skidding straight grain 11 are distributed in the side of screw head 1, and the top surface of the screw head 1 is equipped with interior hexagonal 12,
The bottom surface of the interior hexagonal 12 is equipped with the first straight slot 13 and the second straight slot 14, and first straight slot, 13 and second straight slot 14 runs through spiral shell
First 1 and first screw rod 3, the radius of first straight slot 13 be less than the second straight slot 14, first straight slot 13 is around the second straight slot
14 are distributed, and matte portion 31 and sliding surface portion 32 are additionally provided on first screw rod 3, and the matte portion 31 and the interval of sliding surface portion 32 are set
Set, the grooving 51 and third straight slot 52 of second screw rod 5 being internally provided with through the second screw rod 5, the third straight slot 52 with
Second straight slot 14 connects and radius is equal, and the inside of the third straight slot 52 is equipped with screw thread, and the support rotation bolt 8 includes rotation
Bar 81 and rotation head 82, the swing arm 81 are equipped with screw thread, and the radius of swing arm 81 is slightly larger than the radius of third straight slot 52, the rotation head
82 bottom surface is equipped with cross pattern 821.
The course of work of the present invention：
Object to be fixed during the work time, is fixed on the first screw rod by a kind of nuclear power of the present invention first with flexible check bolt
On 3, then gasket 6 and nut 7 are spun on the second screw rod 5 and fitted closely with object to be fixed, later again by the rotation of support rotation bolt 8
Bar 81 screws among the screw thread of third straight slot 52.A kind of nuclear power of the present invention is with flexible check bolt between screw head and the first screw rod
Equipped with the first kidney-shaped annular groove, the second kidney-shaped annular groove is equipped between the first screw rod and the second screw rod, it is special due to the screw thread on bolt
Stress can all be occurred by not being the ending of screw thread, the transition position of screw head and screw rod and the changed position of screw cross-section product etc.
It concentrates, and the first kidney-shaped annular groove and the second kidney-shaped annular groove reduce the degree of stress concentration, increase screw head, the first screw rod and the
The intensity of changeover portion between two screw rods；First screw rod is internally provided with the first straight slot and the second straight slot, and the first straight slot and second are led to
Slot makes the inside of the first screw rod hollow in part, reduces whole rigidity, can effectively absorb bolt by shock and vibration
When energy, further increase the flexibility of bolt；Support rotation bolt screws in the second screw rod by third straight slot, and the radius of swing arm is bigger
In the radius of third straight slot, since the second screw rod is divided into left and right two parts by grooving, with the screw-in of swing arm, swing arm is by the second spiral shell
Laterally support is big slightly for bar so that and even closer between nut and the second screw flight to be bonded, overall structure is simple, and intensity is big,
Anti-loosing effect is good.
Above-described embodiment is the description of the invention, is not limitation of the invention, it is any to simple transformation of the present invention after
Scheme all belong to the scope of protection of the present invention.
Claims (5)
1. a kind of flexible check bolt of nuclear power, it is characterised in that：Including screw head (1), the first kidney-shaped annular groove (2), the first screw rod
(3), the second kidney-shaped annular groove (4), the second screw rod (5), gasket (6), nut (7) and support rotation bolt (8), the screw head (1)
Bottom end is equipped with the first kidney-shaped annular groove (2), and the bottom end of the first kidney-shaped annular groove (2) is connect with the first screw rod (3), the first kidney-shaped ring
The side of slot (2) to central axes direction indent, on the first kidney-shaped annular groove (2) radius of bottom surface respectively with screw head (2) and first
The radius of screw rod (3) is equal, and the bottom end of first screw rod (2) is connected with the second kidney-shaped annular groove (4), the second kidney-shaped ring
The bottom end of slot (4) is connected with the second screw rod (5), and the side of the second kidney-shaped annular groove (4) is to central axes direction indent, and second
The radius of bottom surface is equal with the radius of the first screw rod (3) and the second screw rod (5) respectively on kidney-shaped annular groove (4), first spiral shell
The radius of bar (3) is more than the radius of the second screw rod (5), and second screw rod (5) is equipped with screw thread.
2. a kind of flexible check bolt of nuclear power as described in claim 1, it is characterised in that：The screw head (1) further includes preventing
Sliding straight grain (11), (14) four part of interior hexagonal (12), the first straight slot (13) and the second straight slot, the anti-skidding straight grain (11) are distributed in
The top surface of the side of screw head (1), the screw head (1) is equipped with interior hexagonal (12), and the bottom surface of the interior hexagonal (12) is equipped with first and leads to
Slot (13) and the second straight slot (14), first straight slot (13) and the second straight slot (14) run through screw head (1) and the first screw rod (3),
The radius of first straight slot (13) is less than the second straight slot (14), and first straight slot (13) is distributed around the second straight slot (14).
3. a kind of flexible check bolt of nuclear power as described in claim 1, it is characterised in that：On first screw rod (3) also
Equipped with matte portion (31) and sliding surface portion (32), the matte portion (31) and the setting of sliding surface portion (32) interval.
4. a kind of flexible check bolt of nuclear power as described in claim 1, it is characterised in that：Second screw rod (5) it is interior
Portion is equipped with grooving (51) and third straight slot (52) through the second screw rod (5), the third straight slot (52) and the second straight slot (14)
It connects and radius is equal, the inside of the third straight slot (52) is equipped with screw thread.
5. a kind of flexible check bolt of nuclear power as described in claim 1, it is characterised in that：Bolt (8) is revolved in the support
Swing arm (81) and rotation head (82), the swing arm (81) are equipped with screw thread, and the radius of swing arm (81) is slightly larger than third straight slot (52)
The bottom surface of radius, the rotation head (82) is equipped with cross pattern (821).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810669803.4A CN108775326A (en) | 2018-06-26 | 2018-06-26 | A kind of flexible check bolt of nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810669803.4A CN108775326A (en) | 2018-06-26 | 2018-06-26 | A kind of flexible check bolt of nuclear power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108775326A true CN108775326A (en) | 2018-11-09 |
Family
ID=64029532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810669803.4A Pending CN108775326A (en) | 2018-06-26 | 2018-06-26 | A kind of flexible check bolt of nuclear power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108775326A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990040989U (en) * | 1998-05-12 | 1999-12-06 | 이구택 | Fastening device for through bolt for preventing loosening |
| CN2599304Y (en) * | 2003-01-24 | 2004-01-14 | 张振坤 | Anti-loosing fastening structure for expanding mouth bolt |
| CN102072235A (en) * | 2011-01-19 | 2011-05-25 | 奇瑞汽车股份有限公司 | Standing bolt for fixed rail of timing chain |
| CN203285565U (en) * | 2013-04-28 | 2013-11-13 | 湖北航天技术研究院总体设计所 | Shock-resisting solid ramjet engine shell body connecting lug structure |
| CN203614545U (en) * | 2013-11-04 | 2014-05-28 | 宁波浩渤工贸有限公司 | High-intensity screw |
| CN106015265A (en) * | 2016-06-03 | 2016-10-12 | 河南科技大学 | Internal screw for check bolt, and check bolt assembly |
| CN208669818U (en) * | 2018-06-26 | 2019-03-29 | 浙江长瑞精密零部件制造有限公司 | A kind of flexible check bolt of nuclear power |
-
2018
- 2018-06-26 CN CN201810669803.4A patent/CN108775326A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990040989U (en) * | 1998-05-12 | 1999-12-06 | 이구택 | Fastening device for through bolt for preventing loosening |
| CN2599304Y (en) * | 2003-01-24 | 2004-01-14 | 张振坤 | Anti-loosing fastening structure for expanding mouth bolt |
| CN102072235A (en) * | 2011-01-19 | 2011-05-25 | 奇瑞汽车股份有限公司 | Standing bolt for fixed rail of timing chain |
| CN203285565U (en) * | 2013-04-28 | 2013-11-13 | 湖北航天技术研究院总体设计所 | Shock-resisting solid ramjet engine shell body connecting lug structure |
| CN203614545U (en) * | 2013-11-04 | 2014-05-28 | 宁波浩渤工贸有限公司 | High-intensity screw |
| CN106015265A (en) * | 2016-06-03 | 2016-10-12 | 河南科技大学 | Internal screw for check bolt, and check bolt assembly |
| CN208669818U (en) * | 2018-06-26 | 2019-03-29 | 浙江长瑞精密零部件制造有限公司 | A kind of flexible check bolt of nuclear power |
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