CN110173498B - Check bolt group for nuclear power - Google Patents
Check bolt group for nuclear power Download PDFInfo
- Publication number
- CN110173498B CN110173498B CN201910494962.XA CN201910494962A CN110173498B CN 110173498 B CN110173498 B CN 110173498B CN 201910494962 A CN201910494962 A CN 201910494962A CN 110173498 B CN110173498 B CN 110173498B
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- Prior art keywords
- locking
- nut
- locking groove
- screw rod
- rod
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- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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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
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/04—Locking of screws, bolts or nuts in which the locking takes place after screwing down with a member penetrating the screw-threaded surface of at least one part, e.g. a pin, a wedge, cotter-pin, screw
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a nuclear power check bolt group which comprises a bolt head, a screw rod, a nut, a first locking groove, a second locking groove and a locking rod, wherein the bottom of the bolt head is fixedly provided with the screw rod, the screw rod is provided with an external thread, the nut is provided with an internal thread matched with the external thread, the nut is screwed on the screw rod, the screw rod is provided with a plurality of vertically arranged first locking grooves, the first locking grooves extend upwards from the bottom end of the screw rod, the nut is in a regular polygon shape, each side surface of the nut is provided with the second locking groove for cutting off the side surface, two ends of the second locking grooves are positioned on two vertical edges of the side surface, the second locking grooves penetrate through the side wall of the nut, the adjacent second locking grooves are not connected, and the locking rod is plugged at the intersection between the first locking groove and the transverse locking groove. According to the invention, the first locking groove, the second locking groove and the locking rod are matched, so that the bolt group is not easy to loosen after being screwed, the connection effect is effectively ensured, and the bolt group is not easy to lose efficacy.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of fasteners, in particular to the technical field of bolt groups.
[ background of the invention ]
Bolt sets are a common fastener used in a wide variety of applications. Many bolt sets are also used in the nuclear power industry. The existing bolt group is easy to loosen in the using process, and certain potential safety hazards can be brought.
[ summary of the invention ]
The invention aims to solve the problems in the prior art and provides a nuclear power check bolt group, which can ensure that bolts are not easy to loosen in the using process.
In order to achieve the purpose, the invention provides a nuclear power check bolt group, which comprises a bolt head, a screw rod, a nut, a first locking groove, a second locking groove and a locking rod, wherein the bottom of the bolt head is fixedly provided with the screw rod, the screw rod is provided with an external thread, the nut is provided with an internal thread matched with the external thread, the nut is screwed on the screw rod, the screw rod is provided with a plurality of vertically arranged first locking grooves, the first locking grooves extend upwards from the bottom end of the screw rod, the nut is in a regular polygon shape, each side surface of the nut is provided with the second locking groove for cutting off the side surface, two ends of the second locking grooves are positioned on two vertical edges of the side surface, the second locking grooves penetrate through the side wall of the nut, the adjacent second locking grooves are not connected, a locking rod is plugged at the intersection between the first locking groove and the transverse locking groove, and the cross section of the locking rod is matched with the intersection of the first locking groove and the second locking groove, the locking rod is in interference fit with the first locking groove and the second locking groove, the nut is in a regular hexagon, and the radian of an area clamped between the adjacent first locking grooves is not an integral multiple of 60 degrees.
Preferably, the bolt head and the screw rod are an integral mechanism, and the length of the first locking groove is not more than 1/3 of the length of the screw rod.
Preferably, the tail end of the locking rod is located on the outer side of the nut, an auxiliary hole is formed in the locking rod close to the tail end of the locking rod, the auxiliary hole penetrates through the locking rod, and the auxiliary hole is located on the outer side of the nut.
Preferably, the locking bar is provided with a pull hook for pulling out the locking bar and matching with the auxiliary hole.
Preferably, the lower end surface of the bolt head and the upper end surface of the nut are both provided with anti-loosening threads.
The invention has the beneficial effects that: according to the invention, the first locking groove, the second locking groove and the locking rod are matched, so that the bolt group is not easy to loosen after being screwed, the connection effect is effectively ensured, and the bolt group is not easy to lose efficacy; the arrangement of the auxiliary hole enables the locking rod to be conveniently pulled out, and the use is convenient; the arrangement of the anti-loosening threads enables the bolt set to have better anti-loosening performance.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of a check bolt set for nuclear power of the present invention;
FIG. 2 is a bottom view of the anti-loosening bolt set for nuclear power of the present invention.
In the figure: 1-bolt head, 2-screw rod, 3-nut, 4-locking rod, 10-anti-loose thread, 20-external thread, 21-first locking groove, 30-internal thread, 31-second locking groove and 40-auxiliary hole.
[ detailed description ] embodiments
Referring to fig. 1 and 2, the nuclear power check bolt set of the present invention includes a bolt head 1, a screw 2, a nut 3, a first locking groove 21, a second locking groove 31, and a locking rod 4, wherein a screw 2 is fixed at the bottom of the bolt head 1, an external thread 20 is provided on the screw 2, an internal thread 30 matched with the external thread 20 is provided on the nut 3, the nut 3 is screwed on the screw 2, a plurality of vertically arranged first locking grooves 21 are provided on the screw 2, the first locking grooves 21 extend upward from the bottom end of the screw 2, the nut 3 is in the shape of a regular polygon, a second locking groove 31 for cutting off a side surface is provided on each side surface of the nut 3, two ends of the second locking grooves 31 are located on two vertical edges of the side surface, the second locking grooves 31 penetrate through the side wall of the nut 3, adjacent second locking grooves 31 are not connected, a locking rod 4 is plugged at the intersection between the first locking groove 21 and the transverse locking, the cross-sectional shape of the locking lever 4 is adapted to the shape of the intersection of the first locking groove 21 and the second locking groove 31, the locking rod 4 is in interference fit with the first locking groove 21 and the second locking groove 31, the nut 3 is in a regular hexagon shape, the radian of the area clamped between the adjacent first locking grooves 21 is not integral multiple of 60 degrees, the bolt head 1 and the screw rod 2 are an integral mechanism, the length of the first locking groove 21 is not more than 1/3 of the length of the screw rod 2, the tail end of the locking rod 4 is positioned at the outer side of the nut 3, an auxiliary hole 40 is arranged at the tail end of the locking rod 4, the auxiliary hole 40 penetrates through the locking rod 4, the auxiliary hole 40 is positioned at the outer side of the nut 3, the locking rod 4 is provided with a drag hook which is used for pulling out the locking rod 4 and is matched with the auxiliary hole 40, and the lower end face of the bolt head 1 and the upper end face of the nut 3 are both provided with anti-loosening threads 10.
The working process of the invention is as follows:
in the working process of the anti-loosening bolt set for nuclear power, the first locking groove 21, the second locking groove 31 and the locking rod 4 are matched, so that the bolt set is not easy to loosen after being screwed, the connecting effect is effectively ensured, and the bolt set is not easy to lose efficacy; the auxiliary hole 40 is arranged to facilitate the pulling out of the locking rod 4, so that the use is convenient; the arrangement of the anti-loosening threads 10 enables the bolt set to have better anti-loosening performance.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (5)
1. The utility model provides a check bolt group for nuclear power which characterized in that: comprises a bolt head (1), a screw rod (2), a nut (3), a first locking groove (21), a second locking groove (31) and a locking rod (4), wherein the bottom of the bolt head (1) is fixed with the screw rod (2), the screw rod (2) is provided with an external thread (20), the nut (3) is provided with an internal thread (30) matched with the external thread (20), the nut (3) is screwed on the screw rod (2), the screw rod (2) is provided with a plurality of vertically arranged first locking grooves (21), the first locking grooves (21) extend upwards from the bottom end of the screw rod (2), the nut (3) is in a regular polygon shape, each side surface of the nut (3) is provided with the second locking groove (31) for cutting the side surface, two ends of the second locking grooves (31) are positioned on two vertical edges of the side surface, and the second locking grooves (31) run through the side wall of the nut (3), not continuous between adjacent second locking groove (31), crossing department stopper between first locking groove (21) and the horizontal locking has a check lock lever (4), the cross sectional shape of check lock lever (4) suits with the shape of crossing department in first locking groove (21) and second locking groove (31), be interference fit between check lock lever (4) and first locking groove (21), second locking groove (31), nut (3) are regular hexagon, and the radian in the region of pressing from both sides between adjacent first locking groove (21) is not the integral multiple of 60.
2. The check bolt set for nuclear power as claimed in claim 1, wherein: the bolt head (1) and the screw rod (2) are an integrated mechanism, and the length of the first locking groove (21) is not more than 1/3 of the length of the screw rod (2).
3. The check bolt set for nuclear power as claimed in claim 1, wherein: the tail end of the locking rod (4) is located on the outer side of the nut (3), an auxiliary hole (40) is formed in the locking rod (4) close to the tail end, the auxiliary hole (40) penetrates through the locking rod (4), and the auxiliary hole (40) is located on the outer side of the nut (3).
4. The check bolt set for nuclear power as claimed in claim 1, wherein: the locking rod (4) is provided with a draw hook which is used for drawing out the locking rod (4) and is matched with the auxiliary hole (40).
5. The check bolt set for nuclear power as claimed in claim 1, wherein: the lower end face of the bolt head (1) and the upper end face of the nut (3) are both provided with anti-loosening threads (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910494962.XA CN110173498B (en) | 2019-06-10 | 2019-06-10 | Check bolt group for nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910494962.XA CN110173498B (en) | 2019-06-10 | 2019-06-10 | Check bolt group for nuclear power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110173498A CN110173498A (en) | 2019-08-27 |
| CN110173498B true CN110173498B (en) | 2021-04-02 |
Family
ID=67698009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910494962.XA Active CN110173498B (en) | 2019-06-10 | 2019-06-10 | Check bolt group for nuclear power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110173498B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1703947A (en) * | 1926-12-27 | 1929-03-05 | Nation Daniel Lathorn | Nut lock |
| CN203585008U (en) * | 2013-12-02 | 2014-05-07 | 上海新奇五金有限公司 | Anti-loosening sleeve type setscrew |
| WO2018073817A2 (en) * | 2016-10-17 | 2018-04-26 | Philip Bogrash | Fastener systems for wood with overtightening and loosening prevention |
| CN108612727A (en) * | 2018-06-20 | 2018-10-02 | 海盐东盛紧固件制造有限公司 | A kind of anti-loose installation bolt |
| CN208294913U (en) * | 2018-05-31 | 2018-12-28 | 邓晓明 | A kind of screw bolt and nut fastening assembly of never becoming loose |
| CN208417206U (en) * | 2018-06-01 | 2019-01-22 | 扬州市金诺尔不锈钢有限公司 | A kind of steel alloy anti-loose fastener |
-
2019
- 2019-06-10 CN CN201910494962.XA patent/CN110173498B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1703947A (en) * | 1926-12-27 | 1929-03-05 | Nation Daniel Lathorn | Nut lock |
| CN203585008U (en) * | 2013-12-02 | 2014-05-07 | 上海新奇五金有限公司 | Anti-loosening sleeve type setscrew |
| WO2018073817A2 (en) * | 2016-10-17 | 2018-04-26 | Philip Bogrash | Fastener systems for wood with overtightening and loosening prevention |
| CN208294913U (en) * | 2018-05-31 | 2018-12-28 | 邓晓明 | A kind of screw bolt and nut fastening assembly of never becoming loose |
| CN208417206U (en) * | 2018-06-01 | 2019-01-22 | 扬州市金诺尔不锈钢有限公司 | A kind of steel alloy anti-loose fastener |
| CN108612727A (en) * | 2018-06-20 | 2018-10-02 | 海盐东盛紧固件制造有限公司 | A kind of anti-loose installation bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110173498A (en) | 2019-08-27 |
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Effective date of registration: 20210816 Address after: 314300 No. 52, xizhangmen, Qinshan community, Qinshan street, Haiyan County, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Sanxi New Material Co.,Ltd. Address before: 314300 Qinshan town Qinshan village Haiyan County Jiaxing City Zhejiang Province Patentee before: HAIYAN QINSHAN RUBBER FACTORY |
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