CN102410294A - Jacking type self-locking bolt - Google Patents
Jacking type self-locking bolt Download PDFInfo
- Publication number
- CN102410294A CN102410294A CN2011103656235A CN201110365623A CN102410294A CN 102410294 A CN102410294 A CN 102410294A CN 2011103656235 A CN2011103656235 A CN 2011103656235A CN 201110365623 A CN201110365623 A CN 201110365623A CN 102410294 A CN102410294 A CN 102410294A
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- screwing
- locking screw
- closed structure
- push rod
- cone shape
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- 230000008602 contraction Effects 0.000 abstract 1
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- 230000003628 erosive effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
A top-tightening type self-locking bolt relates to a self-locking bolt, wherein an external thread A (2) at the lower part of a screwing end A (1) is in threaded connection with an internal thread (5) of a screwing end B (6), and the lower end of a mandril (3) is propped against the inner wall of a conical hole (10), so that the expansion and contraction groove (9) is widened to form expansion self-locking of an external thread B (8); the invention utilizes the jacking action of the conical head on the conical hole of the lower rod body, so that the screwing end A is screwed after the invention is screwed, and the conical head forces the external thread B on the periphery of the conical hole to be locked with the nut, thereby ensuring the railway driving safety and preventing the fastener from falling off caused by the falling of the bolt.
Description
[technical field]
The present invention relates to a kind of self-locking screw, specifically the present invention relates to a kind of top-closed structure self-locking screw that on high ferro bridge fence or railroad rail backplate steel plate rolling stock alive, uses.
[background technique]
Known; Safety of railway traffic is related to the big problem of national economy; Because the shock-effect in the railway operation, employed various component need pass through that relevant departments carry out a large amount of experiments and through post-installation review, its Security for confirmation, durability and stability; Wherein the use amount of bolt is extremely huge; Commercially available self-locking screw kind is more, mostly through on the outside thread of bolt, locking mechanism being set, also has the spring sheet of use or rubber to form locking " self-locking "; But its using effect is unsatisfactory; Just a lot of self-locking screws receive erosion by wind and rain and vibrations for a long time, and spring sheet just can fatigue occur and lose auto-lock function, especially rubber in case tired or agingly just have no auto-lock function; Auto-lock function forfeiture phenomenon also can appear in the obstruction that the self-locking screw that locking mechanism is set on the outside thread receives rusty stain behind the rain erosion and dust, and can't discover; State Planning Commission's key industry project of arranging for example, by common " China Star " train accomplished of 12 enterprises, scientific research institutions and universities, the main cause that withdraws from railway is in the maintenance, the Ministry of Railways finds the potential safety hazard of certain bolt looseness; And domestic a lot of rolling stock derailment accidents are derived from bolt looseness.
[summary of the invention]
In order to overcome the deficiency in the background technique; The invention discloses a kind of top-closed structure self-locking screw; The present invention has utilized the hold out against effect of conical head to bottom body of rod cone shape hole, screws the said end A of screwing after making the present invention tighten, and forces peripheral outside thread B of cone shape hole and nut to realize locking by conical head; Guarantee railway operation safety, taken precautions against the generation that fastening piece that bolt falling causes comes off.
In order to realize the object of the invention, the present invention adopts following technological scheme:
A kind of top-closed structure self-locking screw; Comprise bolt, push rod, said bolt top is set to screw end B, is outside thread B screwing end B lower pole body outer edge surface; Hold the B upper-end surface to be provided with internal thread, unthreaded hole and the cone shape hole of perforation successively to body of rod lower end surface by screwing; Wherein cone shape hole is that aperture, big bottom, aperture, top is little, is provided with at least one breathing groove in unthreaded hole bottom and cone shape hole, and said breathing groove outside connects to the outside thread B of body of rod outer edge surface; Said push rod upper end is provided with screws end A, is provided with outside thread A on the top of push rod; Said outside thread A and the internal thread wire connection of screwing end B of screwing end A bottom withstood on by the push rod lower end on the inwall of cone shape hole, makes said breathing groove increase the expansion self-locking that width forms outside thread B.
Described top-closed structure self-locking screw is provided with corresponding cone shape hole of conical head and the little conical head of the big lower diameter of upper diameter in the bottom of push rod.
Described top-closed structure self-locking screw, push rod and unthreaded hole are Spielpassung.
Described top-closed structure self-locking screw, said outer rim of screwing end A is a polygon.
Described top-closed structure self-locking screw, the said polygon of screwing end A comprises hexagon and quadrangle.
Described top-closed structure self-locking screw, said outer rim of screwing end B is a polygon.
Described top-closed structure self-locking screw, the said polygon of screwing end B comprises hexagon and quadrangle.
Through above-mentioned disclosure, the invention has the beneficial effects as follows:
Top-closed structure self-locking screw according to the invention, the present invention is through screwing end A, make outside thread A of screwing end A bottom and the internal thread wire connection of screwing in the end B; The bottom of said push rod just holds out against the conical surface of cone shape hole, forces the breathing groove of body of rod bottom to broaden, and then makes outside thread B and nut realize locking; Wherein said breathing groove be set to three preferable, but preferably be no more than six, need pull down and at first screw the said end A of screwing when of the present invention; When conical head removes the pressure solutions of cone shape hole; Just can unload the present invention through screwing end B, in unthreaded hole, inject machine oil in the use, can play rust inhibition of the present invention with certain density; The present invention is rational in infrastructure, and locking effect is superior to existing self-locking screw, can guarantee the traffic safety of railway, has taken precautions against the generation of bolt falling phenomenon effectively.
。
[description of drawings]
Fig. 1 is an assembly structure schematic representation of the present invention;
Fig. 2 is a linkage structure schematic representation of the present invention;
Fig. 3 is a structural representation of the present invention;
In the drawings: 1, screw end A; 2, outside thread A; 3, push rod; 4, conical head; 5, internal thread; 6, screw end B; 7, unthreaded hole; 8, outside thread B; 9, breathing groove; 10, cone shape hole.
[embodiment]
Embodiment with reference to following can explain the present invention in more detail; But the present invention is not limited to these embodiments' compound mode.
Top-closed structure self-locking screw in conjunction with described in accompanying drawing 1,2 or 3 comprises bolt, push rod 3, and said bolt top is set to screw end B6; Said outer rim of screwing end B6 is a polygon; The said polygon of screwing end B6 comprises hexagon and quadrangle, and the preferred hexagon of the present invention is outside thread B8 screwing end B6 lower pole body outer edge surface; Hold the B6 upper-end surface to be provided with internal thread 5, unthreaded hole 7 and the cone shape hole 10 of perforation successively to body of rod lower end surface by screwing; Wherein cone shape hole 10 is that aperture, big bottom, aperture, top is little, is provided with at least one breathing groove 9 in unthreaded hole 7 bottoms and cone shape hole 10, and said breathing groove 9 outsides connect to the outside thread B8 of body of rod outer edge surface; Said push rod 3 upper ends are provided with screws end A1; Said outer rim of screwing end A1 is a polygon; The said polygon of screwing end A1 comprises hexagon and quadrangle; The preferred hexagon of the present invention is provided with outside thread A2 on the top of push rod 3, is provided with conical head 4 corresponding cone shape holes 10 and the little conical head 4 of the big lower diameter of upper diameter in the bottom of push rod 3; Said outside thread A2 and internal thread 5 wire connections of screwing end B6 of screwing end A1 bottom, push rod 3 is a Spielpassung with unthreaded hole 7, is withstood on the inwall of cone shape hole 10 by push rod 3 lower ends, makes said breathing groove 9 increase the expansion self-locking that width forms outside thread B8.
The described top-closed structure self-locking screw of embodiment of the present invention, the main use at the plate body of track backplate or vehicle, bridge with during plate body is connected, wherein used nut should not expose nut and be advisable tightening afterwards outside thread B8, or the use double nut; During use push rod 3 is penetrated unthreaded hole 7; The outside thread A2 of screwing end A1 lower end with screw internal thread 5 in the end B6 one or two circle of screwing on, then in the hole with outside thread B8 link, utilize nut and outside thread B8 wire connection and tighten at the opposite side of link; Screw the said end A1 of screwing then; At this moment said conical head 4 withstands on the cone shape hole 10, owing to be provided with breathing groove 9 in the bottom of outside thread B8, the bottom of said push rod 3 just holds out against the conical surface of cone shape hole 10; Force the breathing groove of bottom to broaden, the lower end of outside thread B8 just with nut check; In like manner dismantle and at first screw the loosening end A1 of screwing when of the present invention, make conical head 4 lose pressure, just can unload the present invention through screwing end B6 then cone shape hole 10.
The present invention is equally applicable to have the screw workpiece identical with outside thread B8 of the present invention in the workpiece, and operating process is the same, and said outside thread B8 also plays the purpose of locking screw.
The present invention does not detail part and is existing technology.
The embodiment who selects for use in this article for open the object of the invention currently thinks to suit, but will be appreciated that, the present invention is intended to comprise that all belong to the interior embodiment's of this design and the scope of the invention all changes and improvement.
Claims (7)
1. top-closed structure self-locking screw; Comprise bolt, push rod (3); It is characterized in that: said bolt top is set to screw end B (6); Screwing end B (6) lower pole body outer edge surface is outside thread B (8), holds B (6) upper-end surface to be provided with internal thread (5), unthreaded hole (7) and the cone shape hole (10) of perforation successively to body of rod lower end surface by screwing, and wherein cone shape hole (10) is that aperture, big bottom, aperture, top is little; Be provided with at least one breathing groove (9) in unthreaded hole (7) bottom and cone shape hole (10), said breathing groove (9) outside connects to the outside thread B (8) of body of rod outer edge surface; Said push rod (3) upper end is provided with screws end A (1), is provided with outside thread A (2) on the top of push rod (3); Said outside thread A (2) and internal thread (5) wire connection of screwing end B (6) of screwing end A (1) bottom withstood on the inwall of cone shape hole (10) by push rod (3) lower end, makes said breathing groove (9) increase the expansion self-locking that width forms outside thread B (8).
2. top-closed structure self-locking screw according to claim 1 is characterized in that: be provided with the little conical head (4) of corresponding cone shape hole of conical head (4) (10) and the big lower diameter of upper diameter in the bottom of push rod (3).
3. top-closed structure self-locking screw according to claim 1 is characterized in that: push rod (3) is a Spielpassung with unthreaded hole (7).
4. top-closed structure self-locking screw according to claim 1 is characterized in that: said outer rim of screwing end A (1) is a polygon.
5. top-closed structure self-locking screw according to claim 4 is characterized in that: the said polygon of screwing end A (1) comprises hexagon and quadrangle.
6. top-closed structure self-locking screw according to claim 1 is characterized in that: said outer rim of screwing end B (6) is a polygon.
7. top-closed structure self-locking screw according to claim 6 is characterized in that: the said polygon of screwing end B (6) comprises hexagon and quadrangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103656235A CN102410294A (en) | 2011-11-17 | 2011-11-17 | Jacking type self-locking bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103656235A CN102410294A (en) | 2011-11-17 | 2011-11-17 | Jacking type self-locking bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102410294A true CN102410294A (en) | 2012-04-11 |
Family
ID=45912553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103656235A Pending CN102410294A (en) | 2011-11-17 | 2011-11-17 | Jacking type self-locking bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102410294A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089788A (en) * | 2013-02-04 | 2013-05-08 | 李香秀 | External-pull type self-locking bolt |
| CN103343767A (en) * | 2013-07-24 | 2013-10-09 | 太仓市协诚金属制品有限公司 | Expansion check bolt |
| CN104879361A (en) * | 2015-04-21 | 2015-09-02 | 合肥工业大学 | Expansion lock bolt |
| WO2022135320A1 (en) * | 2020-12-23 | 2022-06-30 | 安徽力源数控刃模具制造有限公司 | Deflection compensation device facilitating fixing workbench |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333977A (en) * | 1993-06-14 | 1994-08-02 | Ishion Corporation Co., Ltd. | Bolt having a locking means |
| CN1695012A (en) * | 2002-09-21 | 2005-11-09 | 帕特里克·W·布雷斯林 | Split set screw fastener assembly and method |
| US20090169328A1 (en) * | 2006-06-15 | 2009-07-02 | Masao Suzuki | Fixing Implement |
| CN201554739U (en) * | 2009-11-16 | 2010-08-18 | 陈国强 | Vehicle wheel hub fastener |
| CN202338549U (en) * | 2011-11-17 | 2012-07-18 | 中铁十五局集团有限公司 | Jacking type self-locking bolt |
-
2011
- 2011-11-17 CN CN2011103656235A patent/CN102410294A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333977A (en) * | 1993-06-14 | 1994-08-02 | Ishion Corporation Co., Ltd. | Bolt having a locking means |
| CN1695012A (en) * | 2002-09-21 | 2005-11-09 | 帕特里克·W·布雷斯林 | Split set screw fastener assembly and method |
| US20090169328A1 (en) * | 2006-06-15 | 2009-07-02 | Masao Suzuki | Fixing Implement |
| CN201554739U (en) * | 2009-11-16 | 2010-08-18 | 陈国强 | Vehicle wheel hub fastener |
| CN202338549U (en) * | 2011-11-17 | 2012-07-18 | 中铁十五局集团有限公司 | Jacking type self-locking bolt |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089788A (en) * | 2013-02-04 | 2013-05-08 | 李香秀 | External-pull type self-locking bolt |
| CN103089788B (en) * | 2013-02-04 | 2015-09-30 | 慈溪市附海大奇电器厂 | A kind of outer drawing type self-locking screw |
| CN103343767A (en) * | 2013-07-24 | 2013-10-09 | 太仓市协诚金属制品有限公司 | Expansion check bolt |
| CN104879361A (en) * | 2015-04-21 | 2015-09-02 | 合肥工业大学 | Expansion lock bolt |
| WO2022135320A1 (en) * | 2020-12-23 | 2022-06-30 | 安徽力源数控刃模具制造有限公司 | Deflection compensation device facilitating fixing workbench |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120411 |