CN105240379A - Check bolt - Google Patents
Check bolt Download PDFInfo
- Publication number
- CN105240379A CN105240379A CN201510815767.4A CN201510815767A CN105240379A CN 105240379 A CN105240379 A CN 105240379A CN 201510815767 A CN201510815767 A CN 201510815767A CN 105240379 A CN105240379 A CN 105240379A
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- CN
- China
- Prior art keywords
- bolt
- locking
- fastening
- screw rod
- nut
- 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.)
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Abstract
The invention relates to the field of mechanical fastening pieces, in particular to a check bolt. The check bolt comprises a fastening bolt and a fastening nut in threaded fit with the fastening bolt, and further comprises two semicircular clamping blocks buckled on a fastening bolt screw rod, wherein the end parts of the two semicircular clamping blocks are locked on the fastening bolt screw rod through a locking bolt and a locking nut; one end of the fastening nut is vertically and oppositely beveled with convex self-locking surfaces; and the same ends of the two semicircular clamping blocks are inclined beveled with concave self-locking surfaces tightly fitting the convex self-locking surfaces. When the check bolt guarantees the check effect, once the fastening bolt is loosened, the fastening is convenient; and the check bolt is particularly suitable for an underground working surface extra-heavy reversed loader.
Description
Technical field
The present invention relates to machanical fastener field, specifically a kind of chek bolt.
Background technique
Bridge formation groove, the tongue of underground coal mine working surface superduty bridge conveyor bridge formation section, to be connected by plain bolt between connection slot and hinged groove, except own wt is heavier, coal amount is crossed also larger in running, and often with gangue and the lump coal of bulk, cause high vibration, loosening often appears in the bolt connected between groove with groove, due to not easily fastening again when loosening appears in bolt specification comparatively large (M72), there is very large potential safety hazard.For ensureing the linking intensity between bridge formation section groove and groove, need a kind of special chek bolt badly, under the prerequisite ensureing anti-loosing effect, easy-to-operat time fastening.
Summary of the invention
The present invention, in order to solve the problem of bolt looseness, provides a kind of chek bolt.
The present invention is achieved by the following technical solutions: a kind of chek bolt, comprise clamping bolt and the tightening nut with clamping bolt screw-thread fit, also comprise two the semicircular ring fixture blocks be fastened on clamping bolt screw rod, lock onto on clamping bolt screw rod by lock bolt and locking nut between the end of two semicircular ring fixture blocks; Wherein one end of tightening nut is opposing upper and lower has cut sth. askew convex in locking face, cuts sth. askew and convex recessed from locking face from locking face secure fit respectively to interior in same one end of two semicircular ring fixture blocks.
During installation, clamping bolt, tightening nut are contained on connected compcnent in advance, adjustment tightening nut is to suitable position, lock bolt on fastening two semicircular ring fixture blocks, locking nut reach prescribed torque, make convex from locking face and recessedly to closely cooperate from locking face, two semicircular ring fixture blocks produce larger fastening force to tightening nut, reach fastening locking object.Preferably, during installation, two semicircular ring fixture blocks are just in time all at the fore-and-aft direction (as shown in Figure 1 direction) of clamping bolt, lock convenient, quick.
When the angle of the convex inclined-plane from locking face on tightening nut and vertical direction is 15 °, analyze stressed (as shown in figure 11) of tightening nut epirelief from locking face, clamping bolt is P to the tension force of tightening nut, its tangential component Pt=Pcos15 °, direction, along convex self-locking towards outward, makes tightening nut go out along convex self-locking emaciated face; Normal component of force Pn=Psin15 °, direction is perpendicular to convex self-locking towards interior, and make tightening nut produce frictional force Fp=μ Pn convex from locking face, direction is contrary with Pt, threads off to hinder tightening nut; As Fp<Pt, tightening nut will go out along convex self-locking emaciated face.After loading onto semicircular ring fixture block, it is N that lock bolt applies pressure by semicircular ring fixture block to tightening nut, its tangential component Nt=Nsin15 °, and direction is along convex self-locking towards interior, contrary with Pt, tightening nut can be stoped to go out along convex self-locking emaciated face, normal component of force Nn=Ncos15 °, direction perpendicular to convex self-locking towards interior, identical with Pn, tightening nut can be made to produce frictional force Fn=μ Nn convex again from locking face, and direction is contrary with Pt, hinders tightening nut to thread off further; At this moment, only have as Fp+Fn+Nt<Pt, tightening nut just can go out along convex self-locking emaciated face, thus reaches the locking object of one-level.
Chek bolt of the present invention, while guarantee anti-loosing effect, once after clamping bolt loosens, fasteningly also facilitate, be specially adapted on mining face under mine superduty transloader.
Accompanying drawing explanation
Fig. 1 is the plan view of chek bolt of the present invention.
Fig. 2 is the sectional view (containing connected compcnent in figure) of Fig. 1.
Fig. 3 is the plan view of Fig. 1.
Fig. 4 is the sectional view (containing connected compcnent in figure) of Fig. 3.
Fig. 5 is the structural representation of clamping bolt.
Fig. 6 is the plan view of tightening nut.
Fig. 7 is the plan view of a wherein semicircular ring fixture block.
Fig. 8 is the plan view of Fig. 7.
Fig. 9 is the plan view of second half annulus fixture block.
Figure 10 is the plan view of Fig. 9.
Figure 11 is the stressed schematic diagram of tightening nut.
In figure: 1-clamping bolt, 2-tightening nut, 3-is convex in locking face, 4-semicircular ring fixture block, and 5-is recessed from locking face, 6-locking trough, 7-lock bolt, 8-locking nut.
Embodiment
A kind of chek bolt, comprise clamping bolt 1 and the tightening nut 2 with clamping bolt 1 screw-thread fit, lock onto on clamping bolt 1 screw rod by lock bolt 7 and locking nut 8 between the end also comprising two semicircular ring fixture blocks, 4, two the semicircular ring fixture blocks 4 be fastened on clamping bolt 1 screw rod; Wherein one end of tightening nut 2 is opposing upper and lower has cut sth. askew convex in locking face 3, cuts sth. askew and convex recessed from locking face 5 from locking face 3 secure fit respectively to interior in same one end of two semicircular ring fixture blocks 4.
During concrete enforcement, clamping bolt 1 screw rod relative with lock bolt 7 screw rod circumferentially has the locking trough 6 of annular, lock bolt 7 screw rod stop bit is in this locking trough 6.When lock bolt 7 and locking nut 8 in use occur to loosen phenomenon, lock bolt 7 screw rod stop bit, in locking trough 6, stops lock bolt 7 to move vertically, reaches locking object.
When being specifically applied on mining face under mine superduty transloader, two semicircular ring fixture blocks 4 are between tightening nut 2 and clamping bolt 1 nut.
In addition, described convex be 10 ~ 20 ° from the face at locking face 3 place and the angle of vertical direction.Because transloader cell body coupling part need reserve adjusting play, if this angle is less than 10 °, the gap adjustable amount too small (as shown in Figure 6) of tightening nut 2 and semicircle fixture block can be made, do not reach usage requirement, if be greater than 20 °, tightening nut 2 easily rotates and loosens in semicircle fixture block, does not reach self-locking object, therefore, when this angle is designed between 10 ~ 20 °, using effect is best.During concrete use, arbitrarily angled between 10 ° to 20 ° all can adopt, as 10 °, 12 °, 15 °, 18 °, 20 °.
Claims (4)
1. a chek bolt, comprise clamping bolt (1) and the tightening nut (2) with clamping bolt (1) screw-thread fit, it is characterized in that, also comprise two the semicircular ring fixture blocks (4) be fastened on clamping bolt (1) screw rod, lock onto on clamping bolt (1) screw rod by lock bolt (7) and locking nut (8) between the end of two semicircular ring fixture blocks (4); Wherein one end of tightening nut (2) is opposing upper and lower has cut sth. askew convex in locking face (3), cuts sth. askew and convex recessed from locking face (5) from locking face (3) secure fit respectively to interior in same one end of two semicircular ring fixture blocks (4).
2. a kind of chek bolt according to claim 1, is characterized in that, clamping bolt (1) screw rod relative with lock bolt (7) screw rod circumferentially has the locking trough (6) of annular, lock bolt (7) screw rod stop bit is in this locking trough (6).
3. a kind of chek bolt according to claim 1 and 2, is characterized in that, two semicircular ring fixture blocks (4) are positioned between tightening nut (2) and clamping bolt (1) nut.
4. a kind of chek bolt according to claim 3, is characterized in that, described convex be 10 ~ 20 ° from the face at locking face (3) place and the angle of vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510815767.4A CN105240379A (en) | 2015-11-23 | 2015-11-23 | Check bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510815767.4A CN105240379A (en) | 2015-11-23 | 2015-11-23 | Check bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105240379A true CN105240379A (en) | 2016-01-13 |
Family
ID=55038155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510815767.4A Pending CN105240379A (en) | 2015-11-23 | 2015-11-23 | Check bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105240379A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359717A (en) * | 2020-11-04 | 2021-02-12 | 姚云生 | Connecting part component of hollow panel for steel-concrete composite bridge |
| CN112431839A (en) * | 2020-10-28 | 2021-03-02 | 江阴市江扬标准紧固件制造有限公司 | Anti-drop bolt for narrow area |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3867972A (en) * | 1973-03-07 | 1975-02-25 | Cesar Fernandez Verau Gonzalez | Nuts and locknuts helicoidally coupled in one single unit for tightening at a controlled torsion |
| CN87216533U (en) * | 1987-12-18 | 1988-07-20 | 滁州电业局电力修造厂 | Looseness preventing nut couple |
| CN202468642U (en) * | 2011-12-08 | 2012-10-03 | 山西煤矿机械制造有限责任公司 | Combined type check bolt device |
| CN203009533U (en) * | 2012-12-29 | 2013-06-19 | 肖在海 | Lock nut |
| CN203430955U (en) * | 2013-07-26 | 2014-02-12 | 济南二机床集团有限公司 | Anti-loose installation device |
-
2015
- 2015-11-23 CN CN201510815767.4A patent/CN105240379A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3867972A (en) * | 1973-03-07 | 1975-02-25 | Cesar Fernandez Verau Gonzalez | Nuts and locknuts helicoidally coupled in one single unit for tightening at a controlled torsion |
| CN87216533U (en) * | 1987-12-18 | 1988-07-20 | 滁州电业局电力修造厂 | Looseness preventing nut couple |
| CN202468642U (en) * | 2011-12-08 | 2012-10-03 | 山西煤矿机械制造有限责任公司 | Combined type check bolt device |
| CN203009533U (en) * | 2012-12-29 | 2013-06-19 | 肖在海 | Lock nut |
| CN203430955U (en) * | 2013-07-26 | 2014-02-12 | 济南二机床集团有限公司 | Anti-loose installation device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431839A (en) * | 2020-10-28 | 2021-03-02 | 江阴市江扬标准紧固件制造有限公司 | Anti-drop bolt for narrow area |
| CN112431839B (en) * | 2020-10-28 | 2022-04-05 | 江阴市江扬标准紧固件制造有限公司 | Anti-drop bolt for narrow area |
| CN112359717A (en) * | 2020-11-04 | 2021-02-12 | 姚云生 | Connecting part component of hollow panel for steel-concrete composite bridge |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160113 |
|
| RJ01 | Rejection of invention patent application after publication |