CN112943779A - Fastening method of anti-vibration fastening bolt - Google Patents
Fastening method of anti-vibration fastening bolt Download PDFInfo
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- CN112943779A CN112943779A CN202110153793.0A CN202110153793A CN112943779A CN 112943779 A CN112943779 A CN 112943779A CN 202110153793 A CN202110153793 A CN 202110153793A CN 112943779 A CN112943779 A CN 112943779A
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- nut
- thread section
- vibration
- fastening
- double
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000007704 transition Effects 0.000 claims abstract description 32
- 230000008569 process Effects 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 13
- 206010003549 asthenia Diseases 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 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
- 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
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
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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
- 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
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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
- F16B37/00—Nuts or like thread-engaging members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a fastening method of a vibration-proof fastening bolt, wherein the vibration-proof fastening bolt comprises a reducing screw rod, the reducing screw rod comprises a first thread section and a second thread section, the thread directions of the first thread section and the second thread section are opposite, and a reducing transition section is arranged between the first thread section and the second thread section; the first screw thread section is matched with a first nut, the second screw thread section is matched with a second nut, and the first nut and the second nut are respectively connected with the double-nut sleeve in a nested mode. The fastening method comprises the following steps: 1) screwing down the first nut; 2) fastening the second nut; 3) and installing and fixing the double-nut sleeve. The invention solves the problem that the fastening bolt is easy to loosen and lose efficacy under the high-frequency vibration load generated by impact drilling of the drilling equipment on the rock slope, can effectively improve the anti-vibration capability of the bolt for the impact drilling equipment, reduce the strength loss of the screw rod, enhance the durability of the bolt, and has wide application prospect and obvious economic and social benefits.
Description
Technical Field
The invention belongs to the field of member fastening, particularly relates to a fastening method of an anti-vibration fastening bolt, and particularly relates to a fastening method of an anti-vibration fastening bolt for drilling equipment.
Background
Bolt connection is a common fastening mode in daily life, and relates to the aspect in production life, but in some special working environments, conventional bolts can not meet the fastening requirements of equipment, for example, the fastening bolts are easy to loosen and fail under the high-frequency vibration load generated by rock-soil anchoring drilling equipment in rock slope impact drilling.
Nowadays, various vibration-proof bolts are available on the market, but most of them cannot solve the problem of loose bolt vibration of impact drilling equipment, or the bolt strength is reduced after the vibration-proof performance is increased. Some ideas on the design of anti-vibration bolts are good but cannot be realized at all based on the prior art.
The inventors searched the following related documents: CN 108061091A discloses a bolt anti-loose locking method and a bolt never loose, the above technology provides a double-nut reverse-buckling locking method, but the screw design of the double-nut reverse-buckling locking method causes stress concentration due to abrupt change of the rod diameter, thereby reducing the strength of the screw. On the other hand, the designed nut contact surface can rotate relatively, and the double nuts cannot be locked completely, so that the fastening performance of the bolt is reduced.
Disclosure of Invention
In view of the above-described problems, the present invention is directed to a method of fastening a vibration-proof fastening bolt.
The technical scheme adopted by the invention is as follows:
a fastening method of a vibration-proof fastening bolt comprises a reducing screw rod, wherein the reducing screw rod comprises a first thread section and a second thread section which are opposite in thread direction, and a reducing transition section is arranged between the first thread section and the second thread section; the first thread section is matched with a first nut (the first nut is matched with the thread of the first thread section), the second thread section is matched with a second nut (the second nut is matched with the thread of the second thread section), and the first nut and the second nut are respectively connected with the double-nut sleeve in a nested manner and are connected into a whole through the double-nut sleeve;
the fastening method of the vibration-proof fastening bolt includes the steps of:
the first step is as follows: the reducing screw penetrates through the reserved hole of the object and screws up the first nut;
the second step is that: fastening the second nut to enable the sides of the first nut and the second nut to be in a parallel state;
the third step: and installing and fixing the double-nut sleeve.
A combined gasket is arranged between the first nut and the second nut; the first step also comprises the steps of selecting and installing a combined gasket according to the residual length of the first thread section and the length of the reducing transition section after the first nut is screwed down; and in the process of fastening the second nut in the second step, the combined gasket is extruded and extrudes the first nut, so that the first nut is prevented from loosening.
The diameter of the first thread section is larger than that of the second thread section, and the first nut freely penetrates through the second thread section.
The length of the reducing transition section is 1-3 times of the diameter of the second thread section, stress concentration is easy to occur when the length of the reducing transition section is too short, and material waste is easy to cause when the length of the reducing transition section is too long. Further, the length of the reducing transition section is 1 time of the diameter of the second thread section.
The thickness of the combined gasket is greater than or equal to the length of the variable-diameter transition section, and when the thickness of the combined gasket is greater than the length of the variable-diameter transition section, the combined gasket is connected with the first thread section, the second thread section and the variable-diameter transition section in a nested mode; when the thickness of the combined gasket is equal to the length of the reducing transition section, the combined gasket is connected with the reducing transition section in a nested mode.
The diameter of the combined gasket is smaller than or equal to the diameter of an inscribed circle of the outer profile hexagon of the second nut.
The inner part of the double-nut sleeve is of a reducing type, the inner outline hexagon of the front end of the double-nut sleeve is matched with the outer outline hexagon of the first nut, and the inner outline of the rear end hexagon of the double-nut sleeve is matched with the outer outline hexagon of the second nut in external diameter.
In order to better fix the sleeve, the inner surface of the double-nut sleeve is provided with a layer of rubber pad.
Preferably, both ends of the reducing screw rod are provided with a first thread section and a second thread section with opposite thread directions.
The invention has the beneficial effects that:
(1) and the vibration resistance of the bolt is improved. The anti-thread double-buckle locking system can effectively prevent the bolt from loosening and losing efficacy under the action of high-frequency vibration load, greatly improves the anti-vibration performance of the bolt, and realizes that the bolt never loosens under the action of vibration load.
(2) The strength loss of the screw is reduced. Stress transmission law has fully been considered in the design of reducing changeover portion, thereby has evaded the stress concentration that the structural shape sudden change caused and has reduced screw rod intensity, has realized that screw rod reducing in-process reduces screw rod intensity to the minimum.
(3) And the durability of the bolt is enhanced. The reverse thread design of the screw rod realizes the locking of the double nuts, and the locking of the double nuts is fundamentally characterized in that the rotation of the double nuts is synchronous (the thread of the bolt is reverse, and the synchronous rotation of the two nuts cannot be realized inevitably, so that the locking purpose is achieved), and the double nut sleeve exerts constraint on the two nuts, so that the two nuts cannot rotate relatively, and the locking is realized and the performance of never loosening is realized. In addition, the durability of the nut also seriously influences the anti-seismic performance of the bolt, and the double-nut sleeve plays an effective protection role for the nut.
(4) The combined gasket enables each nut to be associated with the second nut, and after the second nuts are fastened, the combined gasket is extruded, so that the first nuts are extruded, and the first nuts are effectively prevented from loosening. Under the high-frequency vibration, the extrusion effect between the first nut and the second nut enables friction force to be generated between the combined gaskets, and the friction force can effectively weaken the shearing force effect of the vibration load on the variable-diameter transition.
(5) The invention solves the problem that the fastening bolt is easy to loosen and lose efficacy under the high-frequency vibration load generated by impact drilling of the drilling equipment on the rock slope, can effectively improve the anti-vibration capability of the bolt for the impact drilling equipment, reduce the strength loss of the screw rod, enhance the durability of the bolt, and has wide application prospect and obvious economic and social benefits.
Drawings
FIG. 1 is a schematic view of example 1 of the present invention;
FIG. 2 is an exploded view of embodiment 1 of the present invention;
FIG. 3 is a schematic view of example 2 of the present invention;
FIG. 4 is an exploded view of embodiment 2 of the present invention;
FIG. 5 is a schematic view of a double nut sleeve;
wherein, 1, an object; 2. a bolt head; 3. a variable diameter screw; 301. a smooth screw section; 302. a first thread segment; 303. a variable diameter transition section; 304. a second thread segment; 4. a first nut; 5. a second nut; 6. combining the gaskets; 7. a double nut sleeve.
Detailed Description
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "longitudinal," "transverse," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Example 1
A fastening method of an anti-vibration fastening bolt comprises a bolt head 2 and a reducing screw rod 3, wherein the reducing screw rod 3 comprises a first thread section 302 and a second thread section 304 with opposite thread directions, and a reducing transition section 303 is arranged between the first thread section 302 and the second thread section 304; the first thread section 302 is matched with a first nut 4, the second thread section 304 is matched with a second nut 5, a combined gasket 6 is arranged between the first nut 4 and the second nut 5, the first nut 5 and the second nut 6 are respectively connected with a double-nut sleeve 7 in a nested manner, the first nut 4 and the second nut are connected into a whole through the double-nut sleeve 7, the diameter of the first thread section 302 is larger than that of the second thread section 304, the first nut 4 freely passes through the second thread section 304, the length of the reducing transition section 303 is 1 time of that of the second thread section 304, the thickness of the combined gasket 6 is larger than that of the reducing transition section 303, the combined gasket 6 is connected with the first thread section 302, the second thread section 304 and the reducing transition section 303 in a nested manner, the diameter of the combined gasket 6 is smaller than or equal to the diameter of an inner tangent circle of a hexagon of the outer contour of the second nut 5, so that the double-nut sleeve 7 can be sleeved on the, the inner contour hexagon at the front end of the double-nut sleeve 7 is matched with the outer contour hexagon of the first nut, the inner contour hexagon at the rear end of the double-nut sleeve is matched with the outer diameter of the outer contour hexagon of the second nut, and a layer of rubber pad is arranged on the inner surface of the double-nut sleeve 7.
The fastening method of the vibration-proof fastening bolt includes the steps of:
the first step is as follows: the reducing screw rod 3 penetrates through a reserved hole of the object 1 and is screwed with the first nut 4, and a combined gasket 6 with proper thickness is selected and installed according to the residual length of the first thread section 302 and the length of the reducing transition section 303;
the second step is that: the second nut 5 is fastened to enable the sides of the first nut 4 and the second nut 5 to be in a parallel state, and in the process of fastening the second nut 5, the second nut 5 extrudes the combined gasket 6 and extrudes the first nut 4;
the third step: a double nut sleeve 7 is installed and fixed.
The principle is that the thread directions of the first thread section 302 and the second thread section 304 are opposite, when the first nut 4 and the second nut 5 rotate in the same direction, the first nut 4 rotates outwards to have a loosening trend, and the second nut 5 rotates outwards to have a fastening trend, so that double-nut reverse buckling locking is realized.
Example 2
The fastening method of the bidirectional vibration-proof fastening bolt includes the steps of:
the first step is as follows: the reducing screw 3 penetrates through the reserved hole of the object and is screwed tightly with first nuts at two ends of the reducing screw 3, and a combined gasket 6 with proper thickness is selected and installed according to the residual length of the first thread section 302 and the length of the reducing transition section 303;
the second step is that: and (3) fastening the second nuts 5 at the two ends of the screw rod to enable the sides of the first nut 4 and the second nut 5 to be in a parallel state, and in the process of fastening the second nuts 5 at the two ends of the screw rod, extruding the combined gasket 6 by the second nuts 5 and generating an extruding effect on the first nut 4.
The third step: double nut sleeves 7 at two ends of the screw are installed and fixed.
The invention solves the problem that the fastening bolt is easy to loosen and lose efficacy under the high-frequency vibration load generated by impact drilling of the drilling equipment on the rock slope, can effectively improve the anti-vibration capability of the bolt for the impact drilling equipment, reduce the strength loss of the screw rod, enhance the durability of the bolt, and has wide application prospect and obvious economic and social benefits.
Claims (9)
1. A method of tightening a vibration-proof tightening bolt, characterized by: the anti-vibration fastening bolt comprises a reducing screw rod (3), the reducing screw rod (3) comprises a first thread section (302) and a second thread section (304) which are opposite in thread direction, and a reducing transition section (303) is arranged between the first thread section (302) and the second thread section (304); the first screw thread section (302) is matched with a first nut (4), the second screw thread section (304) is matched with a second nut (5), the first nut (4) and the second nut (5) are respectively connected with a double-nut sleeve (7) in a nested manner, and are connected into a whole through the double-nut sleeve (7);
the fastening method of the vibration-proof fastening bolt includes the steps of:
the first step is as follows: the reducing screw (3) penetrates through the reserved hole of the object and screws up the first nut (4);
the second step is that: fastening the second nut (5) to enable each side of the first nut (4) and each side of the second nut (5) to be in a parallel state;
the third step: and a double-nut sleeve (7) is installed and fixed.
2. A fastening method of a vibration-proof type fastening bolt as defined in claim 1, characterized in that: a combined gasket (6) is arranged between the first nut (4) and the second nut (5); the first step also comprises the steps of selecting and installing a combined gasket (6) according to the residual length of the first thread section (302) and the length of the reducing transition section (303) after the first nut (5) is screwed down; and in the process of fastening the second nut (5) at the second step, the combined gasket (6) is extruded, and the first nut (4) is extruded to prevent the first nut (4) from loosening.
3. A fastening method of a vibration-proof type fastening bolt as defined in claim 1, characterized in that: the diameter of the first thread section (302) is larger than that of the second thread section (304), and the first nut (4) freely passes through the second thread section (304).
4. A fastening method of a vibration-proof type fastening bolt as defined in claim 1, characterized in that: the length of the reducing transition section (303) is 1-3 times of the diameter of the second thread section (304).
5. A fastening method of a vibration-proof type fastening bolt as defined in claim 1, characterized in that: the thickness of the combined gasket (6) is greater than or equal to the length of the diameter-variable transition section (303), and when the thickness of the combined gasket (6) is greater than the length of the diameter-variable transition section (303), the combined gasket (6) is connected with the first thread section (302), the second thread section (304) and the diameter-variable transition section (303) in a nested manner; when the thickness of the combined gasket (6) is equal to the length of the reducing transition section (303), the combined gasket (6) is connected with the reducing transition section (303) in a nested mode.
6. A fastening method of a vibration-proof type fastening bolt as defined in claim 1, characterized in that: the diameter of the combined gasket (6) is smaller than or equal to the diameter of an inscribed circle of the outer profile hexagon of the second nut (5).
7. A fastening method of a vibration-proof type fastening bolt as defined in claim 1, characterized in that: the inner part of the double-nut sleeve (7) is of a reducing type, the inner outline hexagon at the front end of the double-nut sleeve (7) is matched with the outer outline hexagon of the first nut (4), and the inner outline hexagon at the rear end of the double-nut sleeve (7) is matched with the outer outline hexagon of the second nut (5).
8. A fastening method of a vibration-proof type fastening bolt as defined in claim 1 or 7, characterized in that: the inner surface of the double-nut sleeve (7) is provided with a layer of rubber pad.
9. A fastening method of a vibration-proof type fastening bolt as defined in claim 1, characterized in that: and a first thread section and a second thread section which are opposite in thread direction are arranged at two ends of the reducing screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153793.0A CN112943779A (en) | 2021-02-04 | 2021-02-04 | Fastening method of anti-vibration fastening bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153793.0A CN112943779A (en) | 2021-02-04 | 2021-02-04 | Fastening method of anti-vibration fastening bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112943779A true CN112943779A (en) | 2021-06-11 |
Family
ID=76243749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110153793.0A Pending CN112943779A (en) | 2021-02-04 | 2021-02-04 | Fastening method of anti-vibration fastening bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112943779A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482156A (en) * | 2021-07-31 | 2021-10-08 | 赵施艳 | Earthquake-resistant energy-consuming building node structure |
| CN113482155A (en) * | 2021-07-31 | 2021-10-08 | 赵施艳 | Assembly type building node connection structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2508044Y (en) * | 2001-09-03 | 2002-08-28 | 河南石油勘探局水电厂 | Check fixing bolt |
| US20100183399A1 (en) * | 2009-01-20 | 2010-07-22 | Yukio Suga | Anti-loosening fastener |
| CN102506048A (en) * | 2011-08-05 | 2012-06-20 | 王大俊 | Anti-loosing clamping bolt set |
| CN104500522A (en) * | 2014-12-18 | 2015-04-08 | 重庆欧帆门业有限公司 | Double-nut locking mechanism |
| CN205859403U (en) * | 2016-08-17 | 2017-01-04 | 中信戴卡股份有限公司 | A kind of pipe joint |
| CN206468667U (en) * | 2017-01-24 | 2017-09-05 | 大峘集团有限公司 | A kind of bidirectional helical Anti-looseness bolt device |
| US20190063486A1 (en) * | 2017-08-31 | 2019-02-28 | Core Bolt Co., Ltd. | Double nut having anti-loosening part |
-
2021
- 2021-02-04 CN CN202110153793.0A patent/CN112943779A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2508044Y (en) * | 2001-09-03 | 2002-08-28 | 河南石油勘探局水电厂 | Check fixing bolt |
| US20100183399A1 (en) * | 2009-01-20 | 2010-07-22 | Yukio Suga | Anti-loosening fastener |
| CN102506048A (en) * | 2011-08-05 | 2012-06-20 | 王大俊 | Anti-loosing clamping bolt set |
| CN104500522A (en) * | 2014-12-18 | 2015-04-08 | 重庆欧帆门业有限公司 | Double-nut locking mechanism |
| CN205859403U (en) * | 2016-08-17 | 2017-01-04 | 中信戴卡股份有限公司 | A kind of pipe joint |
| CN206468667U (en) * | 2017-01-24 | 2017-09-05 | 大峘集团有限公司 | A kind of bidirectional helical Anti-looseness bolt device |
| US20190063486A1 (en) * | 2017-08-31 | 2019-02-28 | Core Bolt Co., Ltd. | Double nut having anti-loosening part |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482156A (en) * | 2021-07-31 | 2021-10-08 | 赵施艳 | Earthquake-resistant energy-consuming building node structure |
| CN113482155A (en) * | 2021-07-31 | 2021-10-08 | 赵施艳 | Assembly type building node connection structure |
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Application publication date: 20210611 |