CN104214191A - Displacement friction internal expansion lock bolt - Google Patents
Displacement friction internal expansion lock bolt Download PDFInfo
- Publication number
- CN104214191A CN104214191A CN201310512106.5A CN201310512106A CN104214191A CN 104214191 A CN104214191 A CN 104214191A CN 201310512106 A CN201310512106 A CN 201310512106A CN 104214191 A CN104214191 A CN 104214191A
- Authority
- CN
- China
- Prior art keywords
- hole
- bolt
- locking pull
- expanded core
- pull bar
- 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
Abstract
The invention relates to a displacement friction internal expansion lock bolt, belonging to the field of a fastener of a high-speed moving machine, and mainly aiming at solving the problems of quality and safety caused by looseness of the fastener of the high-speed moving machine. The displacement friction internal expansion lock bolt is characterized in that the lock bolt comprises a bolt main body, a locking pull rod and an expending core, wherein the thread head part of a central through hole of the bolt main body is a tapered expanding hole, and the rest part of the central through hole of the bolt main body is matched with the locking pull rod; a cylindrical groove is formed in a non-thread head port of the central through hole of the bolt main body; the corresponding end of the locking pull rod is provided with a matched cylindrical boss; the axis of the expending core is provided with a threaded hole; the threaded hole is matched with the thread section of the locking pull rod; the expending core is arranged in the tapered expanding hole; the surface of the outer end of the expending core is an arc-shaped friction surface matched with an internal conical surface of the tapered expanding hole. The displacement friction internal expansion lock bolt has the characteristics of being capable of locking, and being good in locking effect, safe and reliable as well as long in service life, and is mainly used for various high-speed moving machines and high-speed vibration working environments.
Description
Technical field
The invention belongs to high-speed motion machanical fastener technical field.Being specifically related to a kind of chek bolt for the high speed movable machineries such as train, train cabinet, naval vessel, farm machinery and mining machinery, vibration at high speed working environment, is the ideal product preventing mechanical accident and personal safety.
Background technique
Along with the high speed development of Chinese manufacturing, the Unprecedented demands of high speed railway construction, mining machinery, farm machinery, make high-speed motion machinery, vibration at high speed locking, anticreep problem is more outstanding.Past market there is the chek bolt of various ways, but all in various degree there is various problem, drastically influence the working life of machinery, machine security and personal safety.
summary of the invention
Object of the present invention is exactly provide a kind of locking, good anti-drop effect for above-mentioned deficiency, safe and reliable, expansion check bolt in the displacement friction of long service life.
Technical solution of the present invention is: expansion check bolt in a kind of displacement friction, and comprise bolt body, bolt body axial centre system one through hole, is characterized in that: also comprise locking pull bar and expanded core; Described bolt body through hole screw head is divided into tapered expansion hole, and remaining part matches with locking pull bar; The non-threaded head end mouth of bolt body through hole is provided with cylinder shape groove, and the corresponding end of locking pull bar is provided with the cylindrical boss of cooperation; Expanded core axle center is provided with tapped hole, and this tapped hole matches with locking pull rod screw section; Expanded core is positioned at tapered expansion hole, and expanded core outer end face is the arcuate friction surface coordinated with tapered expansion hole inner conical surface.
Tapered expansion hole afterbody described in technical solution of the present invention is provided with spring collar, and expanded core is positioned at the tapered expansion hole inside spring collar.
The arcuate friction surface of the expanded core described in technical solution of the present invention and the inner conical surface in tapered expansion hole are for linearly to contact.
The conical surface angle degree in the tapered expansion hole described in technical solution of the present invention is 6o48 ".
The overall outer surface of the bolt body described in technical solution of the present invention, locking pull bar, expanded core and spring collar is phosphatization coating.
The present invention is owing to adopting by bolt body, expansion check bolt in the displacement friction of expanded core and locking pull bar composition, wherein, bolt body through hole screw head is divided into tapered expansion hole, remaining part matches with locking pull bar, the non-threaded head end mouth of bolt body through hole is provided with cylinder shape groove, the corresponding end of locking pull bar is provided with the cylindrical boss of cooperation, expanded core axle center is provided with tapped hole, this tapped hole matches with locking pull rod screw section, expanded core is positioned at tapered expansion hole, and expanded core outer end face is the arcuate friction surface coordinated with tapered expansion hole inner conical surface, when thus using, first bolt body is normally fixedly connected with nut, six side's Allen wrench rotation lock pull bars in adopting again afterwards, locking pull bar drives expanded core radially displacement, the intrinsic plasticity of cone material is utilized to make the helical thread portion diameter of bolt body, becoming forces greatly internal and external threads gapless to combine, reach locking, the object of anticreep, particularly for the machinery of high-speed motion and vibration, there is good screw retention and move effect.The present invention, owing to being provided with spring collar at tapered expansion hole afterbody, thus can prevent under any circumstance expanded core from not departing from bolt body.The present invention is owing to all adopting the manufacture of carbon constructional quality steel material at bolt body, expanded core, locking pull bar, and through the most reasonable heat treatment process process, thus make its integral rigidity and intensity and rebound degree all greatly improve, improve bolt join strength simultaneously, increase anti-loosing effect.The invention solves the difficult problem that locking pull bar oneself loosens, when locking pull bar and expanded core is in locking state, locking pull bar self produces self-locking performance.The present invention has locking, good anti-drop effect, safe and reliable, the feature of long service life.The present invention is mainly used in the chek bolt of the various high-speed motion machinery such as train, train cabinet, naval vessel, farm machinery and mining machinery, vibration at high speed working environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of bolt body of the present invention.
Fig. 3 is the structural representation that the present invention locks pull bar.
Fig. 4 is the structural representation of expanded core of the present invention.
Embodiment
As shown in Figures 1 to 4.In displacement friction of the present invention, expansion check bolt is made up of bolt body 1, expanded core 3 and locking pull bar 2.Bolt body 1 is Novel spiral key, and its external shape and screw thread are all identical with GB standard bolt body, but is axially through hole.A part of cavity of this through hole matches with locking pull bar 2, and the through hole part that another part thread head is corresponding is tapered expansion hole, and coordinates with expanded core 3.The non-threaded head end mouth of bolt body 1 through hole is provided with cylinder shape groove, and the corresponding end of locking pull bar 2 is provided with the cylindrical boss of cooperation.Expanded core 3 axle center is provided with tapped hole, and this tapped hole matches with locking pull bar 2 thread section.Expanded core 3 outer end face is the arcuate friction surface coordinated with tapered expansion hole inner conical surface.Tapered expansion hole afterbody is provided with spring collar 4, and expanded core 3 is positioned at the tapered expansion hole inside spring collar 4.The conical surface angle degree in tapered expansion hole is 6o48 ", the arcuate friction surface of expanded core 3 and the inner conical surface in tapered expansion hole are for linearly to contact.
The present invention mainly solves anti-loosening problem between bolt and parent (nut).Working principle is: the in-built expanded core 3 of bolt body 1, locking pull bar 2 is utilized to drive expanded core 3, the arcuate friction surface of expanded core 3 linearly contacts with the tapered expansion hole inner conical surface of bolt body 1, utilize the intrinsic plasticity of material to make bolt body 1 helical thread portion diameter expansion, force internal and external threads blind-mate.The coupling mechanism force of locking pull bar 2 changes according to different-diameter specification coupling mechanism force thereupon.After locking pull bar 2 unclamps, tapered expansion bore dia reduces, and depends on the appropriate design of bolt body 1 and expanded core 3.Bolt body 1 threaded end expansion oral area is provided with spring collar 4, does not depart from bolt body 1 to prevent under any circumstance expanded core 3.
Bolt body 1 adopts carbon constructional quality steel manufacture, and the design size ratio of the diameter of thread and six square toes performs, without the need to special tool by GB standard.User has particular/special requirement negotiable satisfied.Overall employing heat treatment process, every mechanical performance index is up to state standards (8.8 grades-10.9 grades).Particular/special requirement is customizable.
Spring collar 4 user in bolt body 1 tapered expansion hole does not generally need dismounting, as dismounting then only need use leg cal(l)ipers.The design of spring collar 4 completely solves locking pull bar 2 when departing from expanded core 3, and expanded core 3 can not come off, and has stopped component and has fallen into the possibility caused a hidden trouble in body case.
Expanded core 3 adopts carbon constructional quality steel manufacture, and adopt unique heat treatment process, rigidity, intensity reach designing requirement, through theoretical validation with repeatedly test, and can with the optimum state friction slip in bolt body 1 tapered expansion hole.
Locking pull bar 2 adopts carbon constructional quality steel manufacture, and the different size with series product changes thereupon, after heat treatment process, ensures to pull expanded core 3 in design coupling mechanism force situation.
After bolt body 1, locking pull bar 2, expanded core 3 and spring collar 4 manufacture, all carry out chemical phosphorating treatment before assembling, form phosphatization coating.
Fig. 1 structural representation state has been reached when the present invention is dispatched from the factory.Locking pull bar 2, expanded core 3 are in that assembling is micro-tightly not to be loosened.When user uses assembling, to tight a bolt main body 1 according to plain bolt mounting type, after reaching sized bolt installing force moment of torsion, adopt general interior six side's Allen wrench rotation lock pull bars 2, reach regulation coupling mechanism force moment of torsion and get final product (the different coupling mechanism force moment of torsion of specification of bolt body 1 is different).In adopting during dismounting, hexagonal Allen wrench unclamps locking pull bar 2, and after counterclockwise rotating 3-5 circle, impact locking pull bar 2 head, makes locking pull bar 2 in tapered expansion hole in sliding up and down state (sliding distance 3-5 ㎜), i.e. hinged bolt main body 1.
The present invention is series type chek bolt, and product is from the various pitch series of M16-M48.Be mainly used in the working environment of high-speed motion machinery, vibration at high speed, through testing and verification: convenient to use, anti-loosing effect reaches designing requirement, repeatedly can dismantle and reuse, internal thread not damaged is installed to body, the spring collar of expanded core end face makes expanded core under any circumstance never depart from, and eliminates the hidden danger that this product component comes off in body.The examination of this product combination property is safe and reliable, can Reusability.Strong adaptability, using scope is wide.This product is through repetition test, and optimum organization, various technical order meets or exceeds relevant GB, portion's mark standard.
Claims (5)
1. an expansion check bolt in displacement friction, comprise bolt body 1, bolt body 1 axial centre system one through hole, is characterized in that: also comprise locking pull bar 2 and expanded core 3; Described bolt body 1 through hole screw head is divided into tapered expansion hole, and remaining part matches with locking pull bar 2; The non-threaded head end mouth of bolt body 1 through hole is provided with cylinder shape groove, and the corresponding end of locking pull bar 2 is provided with the cylindrical boss of cooperation; Expanded core 3 axle center is provided with tapped hole, and this tapped hole matches with locking pull bar 2 thread section; Expanded core 3 is positioned at tapered expansion hole, and expanded core 3 outer end face is the arcuate friction surface coordinated with tapered expansion hole inner conical surface.
2. expansion check bolt in a kind of displacement friction according to claim 1, is characterized in that: described tapered expansion hole afterbody is provided with spring collar 4, and expanded core 3 is positioned at the tapered expansion hole inside spring collar 4.
3. expansion check bolt in a kind of displacement friction according to claim 1 and 2, is characterized in that: the arcuate friction surface of described expanded core 3 and the inner conical surface in tapered expansion hole are for linearly to contact.
4. expansion check bolt in a kind of displacement friction according to claim 1 and 2, is characterized in that: the conical surface angle degree in described tapered expansion hole is 6o48 ".
5. expansion check bolt in a kind of displacement friction according to claim 2, is characterized in that: the overall outer surface of described bolt body 1, locking pull bar 2, expanded core 3 and spring collar 4 is provided with phosphatization coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310512106.5A CN104214191A (en) | 2013-10-28 | 2013-10-28 | Displacement friction internal expansion lock bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310512106.5A CN104214191A (en) | 2013-10-28 | 2013-10-28 | Displacement friction internal expansion lock bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104214191A true CN104214191A (en) | 2014-12-17 |
Family
ID=52095996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310512106.5A Pending CN104214191A (en) | 2013-10-28 | 2013-10-28 | Displacement friction internal expansion lock bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104214191A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109548337A (en) * | 2018-12-05 | 2019-03-29 | 重庆怡之驰机械有限公司 | Distance increasing unit shell |
| CN109707722A (en) * | 2019-02-28 | 2019-05-03 | 海盐嘉海五金有限公司 | A kind of automotive hub connection bolt |
| CN113294425A (en) * | 2021-05-11 | 2021-08-24 | 北京航天智宇科技有限公司 | Combined screw and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155212A1 (en) * | 2001-12-14 | 2005-07-21 | Derek Crutchley | Method of fastening |
| CN2866935Y (en) * | 2006-01-06 | 2007-02-07 | 中国船舶重工集团公司第七一一研究所 | Dismountable anti-loosing bolt |
| CN102410295A (en) * | 2011-11-17 | 2012-04-11 | 中铁十五局集团有限公司 | Pull-type self-locking bolt |
| CN202883649U (en) * | 2012-10-24 | 2013-04-17 | 武汉路友科技有限责任公司 | Internal expansion series lock bolt |
| CN203594675U (en) * | 2013-10-28 | 2014-05-14 | 襄阳顺应机械有限责任公司 | Displacement friction internal-expansion check bolt |
-
2013
- 2013-10-28 CN CN201310512106.5A patent/CN104214191A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050155212A1 (en) * | 2001-12-14 | 2005-07-21 | Derek Crutchley | Method of fastening |
| CN2866935Y (en) * | 2006-01-06 | 2007-02-07 | 中国船舶重工集团公司第七一一研究所 | Dismountable anti-loosing bolt |
| CN102410295A (en) * | 2011-11-17 | 2012-04-11 | 中铁十五局集团有限公司 | Pull-type self-locking bolt |
| CN202883649U (en) * | 2012-10-24 | 2013-04-17 | 武汉路友科技有限责任公司 | Internal expansion series lock bolt |
| CN203594675U (en) * | 2013-10-28 | 2014-05-14 | 襄阳顺应机械有限责任公司 | Displacement friction internal-expansion check bolt |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109548337A (en) * | 2018-12-05 | 2019-03-29 | 重庆怡之驰机械有限公司 | Distance increasing unit shell |
| CN109548337B (en) * | 2018-12-05 | 2020-06-02 | 重庆怡之驰机械有限公司 | Range extender shell |
| CN109707722A (en) * | 2019-02-28 | 2019-05-03 | 海盐嘉海五金有限公司 | A kind of automotive hub connection bolt |
| CN109707722B (en) * | 2019-02-28 | 2023-12-26 | 海盐嘉海五金有限公司 | Automobile hub connecting bolt |
| CN113294425A (en) * | 2021-05-11 | 2021-08-24 | 北京航天智宇科技有限公司 | Combined screw and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1987134A (en) | Thread connection anti-loose fastener | |
| CN104214191A (en) | Displacement friction internal expansion lock bolt | |
| CN200985940Y (en) | Screwed connection anti-loose fastener | |
| CN100425846C (en) | Accentric self locking nut | |
| CN203594675U (en) | Displacement friction internal-expansion check bolt | |
| CN104500522B (en) | Double-nut locking mechanism | |
| CN204357863U (en) | Double nut locking mechanism | |
| CN102729192A (en) | Electric screwdriver | |
| CN112727894A (en) | Locking car fastener that moves | |
| CN105972041A (en) | Double loosening preventing type bolt | |
| CN208431253U (en) | Nut apparatus based on elastic counter-pressure | |
| CN209557462U (en) | A kind of backstop lock nut, vehicle, generating equipment and track | |
| CN113294419B (en) | Fastener with open-loop type vibration absorption locking ring | |
| CN103314169B (en) | Locking safety lock | |
| CN103277392A (en) | Eccentric type self-locking nut | |
| CN209245035U (en) | A kind of subassembly of lock bolt | |
| CN112128209A (en) | Upper locking type elastic conical locknut | |
| CN114439765A (en) | Exploratory hole plug of double-layer casing and aircraft engine | |
| CN202811777U (en) | Novel double-nut locking mechanism | |
| CN207297580U (en) | Conical surface stop nut | |
| CN111396436A (en) | Dense-tooth check bolt and nut assembly | |
| CN101497233A (en) | Axle end rotation-proof mechanism | |
| CN218066178U (en) | Packer dabber locking screw thread verifying attachment | |
| CN213808408U (en) | Standardized anti-loose bolt and nut assembly for railway large-scale assembly | |
| CN112628268B (en) | Bolt and nut assembly capable of effectively preventing disassembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141217 |