CN113775630A - Screw withdrawing prevention bolt - Google Patents
Screw withdrawing prevention bolt Download PDFInfo
- Publication number
- CN113775630A CN113775630A CN202111078959.3A CN202111078959A CN113775630A CN 113775630 A CN113775630 A CN 113775630A CN 202111078959 A CN202111078959 A CN 202111078959A CN 113775630 A CN113775630 A CN 113775630A
- Authority
- CN
- China
- Prior art keywords
- bolt
- gasket
- wedge
- nut
- strip
- 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
- 230000002265 prevention Effects 0.000 title abstract description 12
- 239000010687 lubricating oil Substances 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 16
- 230000002512 anti-withdrawal effect Effects 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000011797 cavity material Substances 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000013459 approach Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
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- 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
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- 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
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
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- 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
- F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
- F16B41/002—Measures against loss of bolts, nuts or pins
Abstract
The invention discloses a screw withdrawing prevention bolt which comprises a bolt body and a withdrawing prevention gasket, wherein a nut is arranged or not arranged, a withdrawing prevention piece is arranged on the withdrawing prevention gasket, and when the withdrawing prevention gasket is sleeved on the bolt, the nut is screwed or the bolt body is screwed, so that the withdrawing prevention piece and the bolt body form a wedge structure or the withdrawing prevention piece and a to-be-fixed piece form an anti-rotation structure. The invention utilizes the wedging structure to tighten and prevent the loosening and the wire withdrawing of the nut or the bolt, or fixes the bolt by the anti-rotation structure and prevents the rotation between the bolt and the fixed piece, thereby realizing the anti-wire withdrawing; the anti-back-off device is designed according to different use environments, has a wide application range and an ideal anti-back-off effect; the nut with lubricating oil is arranged, so that the nut cannot be detached due to corrosion when the nut is detached.
Description
Technical Field
The invention relates to a bolt, in particular to a screw withdrawing prevention bolt, and belongs to the technical field of public accessories.
Background
In the use of the bolt, especially in the high-tech field, the problem is that the screw is drawn back to cause loosening. The wire withdrawing is caused by various conditions such as vibration and the like, and the biggest problem caused by the wire withdrawing is that the equipment works abnormally and is even damaged. To solve this problem, japan and germany have given their own solutions, but other countries have not yet made solutions in this respect.
Disclosure of Invention
Through research, the inventor provides a screw bolt capable of preventing screw from being withdrawn.
In order to achieve the purpose, the technical means adopted by the invention is as follows: the utility model provides a prevent moving back a screw bolt, includes the bolt body and prevents moving back the gasket, sets up or does not set up the nut, prevent being provided with on the gasket and prevent moving back, when preventing moving back the gasket and cup joint on the bolt, by the nut screw or the screw is advanced to the bolt body, make prevent moving back and form wedging structure with the bolt body or prevent moving back and treat that the mounting forms rotation-proof structure.
Furthermore, the wedging structure is a wedge strip connected in the middle of the anti-back gasket and a wedge groove formed in a threaded rod of the bolt, wherein the wedge groove is an equal-width groove, the wedge strip is a non-equal-width strip, the section width of the wedge strip on the side of the anti-back gasket is smaller than that of the suspended end, when the anti-back gasket is sleeved on the threaded rod of the bolt, the wedge strip enters the wedge groove and approaches the head of the bolt along with the anti-back gasket, and the wedge strip is gradually matched with the wedge groove to form a tensioning structure.
Furthermore, the wedge strip is a wedge strip which is gradually thickened from the gasket end to the suspension end.
Furthermore, the free end of the wedge strip is provided with a wedge withdrawing hole for removing the wedge strip.
Furthermore, the anti-rotation structure comprises at least one positioning pin and a positioning plate which are arranged on the anti-backing gasket, one end of the positioning pin is arranged on the end face of the anti-backing gasket, and the other end of the positioning pin is suspended; one end of the positioning plate is mounted on the outer side wall of the anti-withdrawal gasket, and the other end of the positioning plate is suspended in the air; when the positioning plate is locked, the hanging end of the positioning pin is inserted into the pin hole formed in the end face of the fixed piece, and the hanging end of the positioning plate is inserted into the slot formed in the head of the bolt or covers the head of the bolt.
Furthermore, the anti-rotation structure is two locating pins and six locating plates, wherein the two locating pins are arranged on the anti-return gasket and are positioned on a diameter line, and the six locating plates are uniformly distributed on the side wall of the anti-return gasket.
Furthermore, one end of the nut is provided with a section of closed cavity, lubricating oil or grease is arranged in the closed cavity, an oil seepage hole is arranged on the middle hole wall of the closed cavity sleeved bolt, an oil inlet is arranged on the end face of the closed cavity, and an oil port plug or an oil injection valve is arranged on the oil inlet.
The invention has the beneficial effects that: the wedging structure is used for tensioning to prevent the screw nut or the screw bolt from loosening and withdrawing the screw, or the anti-rotation structure is used for fixing the screw bolt and preventing the rotation between the screw bolt and the fixing piece, so that the anti-withdrawal is realized; the anti-back-off device is designed according to different use environments, has a wide application range and an ideal anti-back-off effect; the nut with lubricating oil is arranged, so that the nut cannot be detached due to corrosion when the nut is detached.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a back-off prevention gasket according to embodiment 1 of the present invention;
fig. 3 is a schematic structural view of an anti-back-off gasket according to embodiment 3 of the present invention.
In the figure: 1. the bolt comprises a bolt body, 11, a wedge groove, 2, an anti-back-off gasket, 21, a wedge strip, 22, a wedge back-off hole, 23, a positioning pin, 24, a positioning plate, 3, a nut, 31 and a closed cavity.
Detailed Description
Example 1
The screw bolt comprises a bolt body 1, an anti-withdrawal gasket 2 and a nut 3, wherein the anti-withdrawal gasket 2 is provided with a wedge strip 21 which is gradually thickened from a gasket end to a suspension end, and the suspension end of the wedge strip 21 is provided with a withdrawal wedge hole 22 for removing the wedge strip 21. The threaded rod of the bolt is provided with a wedge groove 11 which forms a wedging structure with a wedge strip 21 of the anti-backing gasket 2. When the anti-back-off gasket 2 is sleeved on a threaded rod of a bolt, the nut 3 is screwed, the wedge strip 21 enters the wedge groove 11 and approaches to the head of the bolt along with the anti-back-off gasket 2, and the wedge strip 21 is gradually matched with the wedge groove 11 to form a tensioning structure.
The wedge groove 11 is an equal-width groove, the wedge strip 21 is a non-equal-width strip, and the section width of the wedge strip at the side of the anti-withdrawal gasket is smaller than that of the suspended end, so that a tensioning structure is formed in a matching manner in the process that the wedge strip gradually penetrates into the wedge groove. The opening of the wedge groove 11 may be a through groove, that is, a communicating groove is formed in the middle of the threaded rod of the bolt, so that the threaded rod is divided into two halves, or a groove formed in the threaded rod, and a groove body is formed by screwing the center of the threaded rod outwards. The purpose is to form a wedge groove which can form a wedge structure with a wedge strip.
Along with the tightening of the wedging structure, the thread end of the bolt can rise, and the nut cannot be withdrawn. How to realize the removal of the wool is that the inventor sets a wedge withdrawing hole at the suspended end of the wedge strip, when the screw nut is rotated to withdraw the screw, the wedge strip is pulled through the wedge withdrawing hole to realize synchronous screw withdrawing, and the bolt is removed after the wedge strip is withdrawn. Since the inventors are more concerned about the anti-back-out condition, disassembly is complicated and difficult compared to tightening.
Considering that the invention can prevent the wire from withdrawing, and if the maintenance is needed after a long time, how to solve the problem that the wire can not be withdrawn due to corrosion and the like, the inventor designs a nut 3, wherein one end of the nut 3 is provided with a section of closed cavity 31, lubricating oil or grease is arranged in the closed cavity, an oil seepage hole is arranged on the wall of the middle hole of the closed cavity sleeved bolt, an oil inlet is arranged on the end surface of the closed cavity, and an oil port plug or an oil injection valve is arranged on the oil inlet. Thus, oil in the cavity section of the nut seeps out under the environment of vibration and the like and follows the thread of the bolt, and both the fixing piece and the threaded rod of the bolt are rustproof and lubricated.
Example 2
The screw bolt comprises a bolt body 1 and a withdrawing-proof gasket 2, wherein two positioning pins 23 are arranged on the withdrawing-proof gasket 2 and on a diameter line, and six positioning plates 24 are uniformly distributed on the side wall of the withdrawing-proof gasket 2.
One end of the positioning pin 23 is arranged on the end surface of the anti-backing gasket 2, and the other end is suspended; one end of the positioning plate 24 is installed on the outer side wall of the anti-backing gasket 2, and the other end is suspended in the air; when the locking device is locked, the free end of the positioning pin is inserted into the pin hole formed in the end face of the fixed piece, and the free end of the positioning plate is inserted into the slot formed in the head of the bolt or covers the head of the bolt, so that the anti-backing gasket, the bolt and the to-be-fixed piece form an anti-rotation structure.
The screw that moves back that vibrations etc. caused must make the bolt rotatory, and anti-rotation structure has injectd the bolt and can not rotate, has solved the difficult problem of preventing moving back the screw, convenient processing moreover, easy to assemble.
In the two embodiments of the invention, the wedging structure is used for tensioning to prevent the loosening and the wire withdrawing of the nut or the bolt, or the rotation preventing structure is used for fixing the bolt and preventing the rotation between the bolt and the fixing piece, so that the wire withdrawing prevention is realized; the anti-back-off device is designed according to different use environments, has a wide application range and an ideal anti-back-off effect; the nut with lubricating oil is arranged, so that the nut cannot be detached due to corrosion when the nut is detached.
Although particular embodiments of the invention have been described and illustrated in detail, it should be understood that various equivalent changes and modifications could be made to the above-described embodiments in accordance with the spirit of the invention, and the resulting functional effects would still fall within the scope of the invention.
Claims (7)
1. The utility model provides an anti-receding screw bolt, includes the bolt body and prevents moving back the gasket, sets up or does not set up nut, its characterized in that: the anti-back gasket is provided with an anti-back piece, and when the anti-back gasket is sleeved on the bolt, the anti-back piece and the bolt body form a wedging structure or form an anti-rotation structure with the to-be-fixed piece by screwing a nut or feeding a screw into the bolt body.
2. The anti-back-out bolt according to claim 1, wherein: the wedge structure is for connecting the wedge strip in the middle of preventing moving back the gasket and opening the wedge groove on the threaded rod of bolt, and wherein the wedge groove is the constant width groove, and the wedge strip is the non-constant width strip, and the wedge strip cross-sectional width that is located to prevent moving back the gasket side is less than the cross-sectional width of unsettled one end, when preventing moving back the gasket and cup joint on the threaded rod of bolt, the wedge strip gets into in the wedge groove and is close to the bolt head along with preventing moving back the gasket, and the wedge strip forms the tight structure that rises gradually with the wedge groove cooperation.
3. The anti-back-out bolt according to claim 2, wherein: the wedge strip is a wedge strip which is gradually thickened from the gasket end to the suspension end.
4. The anti-back-out bolt according to claim 3, wherein: the hanging end of the wedge strip is provided with a wedge withdrawing hole for detaching the wedge strip.
5. The anti-back-out bolt according to claim 1, wherein: the anti-rotation structure comprises at least one positioning pin and a positioning plate which are arranged on the anti-backing gasket, one end of the positioning pin is arranged on the end face of the anti-backing gasket, and the other end of the positioning pin is suspended; one end of the positioning plate is mounted on the outer side wall of the anti-withdrawal gasket, and the other end of the positioning plate is suspended in the air; when the positioning plate is locked, the hanging end of the positioning pin is inserted into the pin hole formed in the end face of the fixed piece, and the hanging end of the positioning plate is inserted into the slot formed in the head of the bolt or covers the head of the bolt.
6. The anti-back-out bolt according to claim 5, wherein: the anti-rotation structure is composed of two positioning pins and six positioning plates, wherein the two positioning pins are arranged on the anti-return gasket and are positioned on a diameter line, and the six positioning plates are uniformly distributed on the side wall of the anti-return gasket.
7. The anti-back-out bolt according to claim 1, wherein: one end of the nut is provided with a section of closed cavity, lubricating oil or grease is arranged in the closed cavity, an oil seepage hole is arranged on the middle hole wall of the closed cavity sleeved with the bolt, an oil inlet is arranged on the end face of the closed cavity, and an oil port plug or an oil injection valve is arranged on the oil inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111078959.3A CN113775630A (en) | 2021-09-15 | 2021-09-15 | Screw withdrawing prevention bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111078959.3A CN113775630A (en) | 2021-09-15 | 2021-09-15 | Screw withdrawing prevention bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113775630A true CN113775630A (en) | 2021-12-10 |
Family
ID=78843925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111078959.3A Pending CN113775630A (en) | 2021-09-15 | 2021-09-15 | Screw withdrawing prevention bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113775630A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1855018A2 (en) * | 2006-05-11 | 2007-11-14 | Bauer, Robert | Screw lock |
| CN203051386U (en) * | 2012-11-25 | 2013-07-10 | 安徽六方重联机械股份有限公司 | Multifunctional anti-loose type special-shaped bolt |
| CN204591942U (en) * | 2015-03-25 | 2015-08-26 | 北京汽车股份有限公司 | Bolt mounting structure |
| CN109931322A (en) * | 2019-04-18 | 2019-06-25 | 盈锋志诚嘉精密五金（深圳）有限公司 | Combined-type locking nut structure |
| CN211343672U (en) * | 2019-11-27 | 2020-08-25 | 黄国柱 | Keyway type anti-back screw |
| CN213451269U (en) * | 2020-11-05 | 2021-06-15 | 武汉信莅唯电气有限公司 | Bolt for electric power facility |
| CN214007738U (en) * | 2020-09-27 | 2021-08-20 | 北京物资学院 | Anti-loosening fastening assembly |
-
2021
- 2021-09-15 CN CN202111078959.3A patent/CN113775630A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1855018A2 (en) * | 2006-05-11 | 2007-11-14 | Bauer, Robert | Screw lock |
| CN203051386U (en) * | 2012-11-25 | 2013-07-10 | 安徽六方重联机械股份有限公司 | Multifunctional anti-loose type special-shaped bolt |
| CN204591942U (en) * | 2015-03-25 | 2015-08-26 | 北京汽车股份有限公司 | Bolt mounting structure |
| CN109931322A (en) * | 2019-04-18 | 2019-06-25 | 盈锋志诚嘉精密五金（深圳）有限公司 | Combined-type locking nut structure |
| CN211343672U (en) * | 2019-11-27 | 2020-08-25 | 黄国柱 | Keyway type anti-back screw |
| CN214007738U (en) * | 2020-09-27 | 2021-08-20 | 北京物资学院 | Anti-loosening fastening assembly |
| CN213451269U (en) * | 2020-11-05 | 2021-06-15 | 武汉信莅唯电气有限公司 | Bolt for electric power facility |
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