CN104179768B - The method preventing bolt fracture to be scattered and bear the notch bolt assembly of superimpose loads power - Google Patents
The method preventing bolt fracture to be scattered and bear the notch bolt assembly of superimpose loads power Download PDFInfo
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- CN104179768B CN104179768B CN201410414985.2A CN201410414985A CN104179768B CN 104179768 B CN104179768 B CN 104179768B CN 201410414985 A CN201410414985 A CN 201410414985A CN 104179768 B CN104179768 B CN 104179768B
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- Prior art keywords
- bolt
- polished rod
- changeover portion
- recess
- protecting cover
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- 230000000694 effects Effects 0.000 claims abstract description 7
- 241000168254 Siro Species 0.000 claims abstract description 6
- 238000009987 spinning Methods 0.000 claims abstract description 6
- 210000003371 Toes Anatomy 0.000 claims description 6
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Abstract
<b> the invention discloses a kind of method preventing bolt fracture to be scattered and the notch bolt assembly bearing superimpose loads power, the present invention will establish jagged bolt to be made into have the bolt of polished rod section and thread section in advance, and changeover portion is set in the joint of recess and polished rod section and thread section, make the diameter of changeover portion be less than polished rod section and thread section diameter and be greater than the diameter of recess, then when adopting this to establish jagged bolt to connect, a protecting cover is overlapped in the polished rod section part of bolt, an elastic seal ring is at least installed in this protecting cover, this elastic seal ring is closely enclosed within the changeover portion of bolt, like this when establishing jagged bolt in use, when there is fracture in indent, because the protecting cover on bolt is by the compact siro spinning technology effect of elastic seal ring and bolt changeover portion, post-rift bolt can be effectively prevented to be scattered.The present invention has that usability is reliable, structure is simple, easy to use, can greatly improve the advantages such as the Safety performance of equipment.</b>
Description
Technical field
the present invention relates to a kind of method preventing bolt fracture to be scattered and the notch bolt assembly bearing superimpose loads power, belong to special fastening connection piece technical field.
Background technique
in the prior art, in order to prevent machinery overburdening or super moment of torsion from running, generally adopt notch type bolt to connect, the diameter of its bolt recess is that the Maximum Torque that specifies according to use occasion or maximum shear stress are determined.When the load of machinery exceedes Maximum Torque or the maximum shear stress of notch bolt defined, notch bolt will rupture, thus forces machinery out of service.But the notch bolt in currently available technology is in the process used, when the break occurs, post-rift bolt will be scattered in machinery, because machinery can not quit work in time completely, the break bolt of being therefore scattered impacts machinery possibly, sometimes also can destroy whole machinery.Therefore the using effect of existing notch bolt or not ideal enough, still can not meet the requirement of use, particularly can not meet the requirement of some special occasions safe handling.
Summary of the invention
the object of the invention is to, there is provided that a kind of structure is simple, usability reliable and the method preventing bolt fracture to be scattered that can not damage use equipment and the notch bolt assembly bearing superimpose loads power, to meet the fastening requirements of special occasions and to overcome the deficiencies in the prior art.
technological scheme of the present invention is achieved in that
a kind of method preventing bolt fracture to be scattered of the present invention is, the method will establish jagged bolt to be made into have the bolt of polished rod section and thread section in advance, and changeover portion is set in the joint of recess and polished rod section and thread section, make the diameter of changeover portion be less than polished rod section and thread section diameter and be greater than the diameter of recess, then when adopting this to establish jagged bolt to connect, a protecting cover is overlapped in the polished rod section part of bolt, an elastic seal ring is at least installed in this protecting cover, this elastic seal ring is closely enclosed within the changeover portion of bolt, like this when establishing jagged bolt in use, when there is fracture in indent, because the protecting cover on bolt is by the compact siro spinning technology effect of elastic seal ring and bolt changeover portion, thus effectively prevent post-rift bolt to be scattered.
be that the screw rod that this assembly is included in bolt is provided with the bolt of bolt head and recess according to of the present invention a kind of notch bolt assembly bearing superimpose loads power that said method builds; The screw rod of recess near bolt head side of bolt is polished rod section, the screw rod of recess opposite side is thread section, be provided with changeover portion in the joint of recess and polished rod section and thread section, the diameter of changeover portion is less than the diameter of polished rod section and thread section, and the diameter of recess is less than the diameter of changeover portion; In the polished rod section of bolt, cover has protecting cover, and recess and all changeover portions all cover in by protecting cover, be at least provided with an elastic seal ring, and this elastic seal ring are fastened on changeover portion in protecting cover.
two elastic seal rings are preferably installed in above-mentioned protecting cover, and two elastic seal rings are fastened on the changeover portion on recess both sides respectively.
the annular slot for fixing elastic seal ring is provided with in above-mentioned protecting cover.
above-mentioned elastic seal ring of stating is rubber seal or malthoid formula seal ring.
the polished rod section of above-mentioned bolt is preferably transition fit with coordinating of protecting cover.
the connection of above-mentioned changeover portion and polished rod section and thread section is that the conical surface connects.
above-mentioned bolt head and polished rod section are that arc transition is connected.
above-mentioned bolt head is six square toes, and six square toes bottom surfaces are rounded face.
chamfering is provided with at the end face of above-mentioned thread section.
owing to have employed technique scheme, jagged bolt is established in use when of the present invention, when there is fracture in indent, because the protecting cover on bolt is by the compact siro spinning technology effect of elastic seal ring and bolt changeover portion, even if after bolt ruptures, bolt also by protecting cover and elastic seal ring and bolt changeover portion compact siro spinning technology effect and bear certain load, this load is different from the former main load be applied on bolt, this load is inertial load when equipment is out of service after bolt fracture, this load to act on post-rift bolt and reduces rapidly due to the out of service gradually of machinery.After testing and proof of actual use, the present invention is adopted can effectively to prevent post-rift bolt to be scattered and on the impact of machinery and destruction.Therefore, adopt this technological scheme of the present invention can effectively prevent post-rift bolt to be scattered phenomenon, and substantially increase the safety and reliability that machinery runs.So the present invention is compared with prior art, the present invention not only has the advantage that usability is reliable, can effectively prevent post-rift bolt to be scattered, but also have structure simple, easy to use, can greatly improve the advantages such as the Safety performance of equipment.The present invention is particularly suitable for requiring that high special occasions fastening requirements uses to device security performance.
Accompanying drawing explanation
fig. 1 is the structural representation that the present invention connects when using in machinery;
fig. 2 is that the present invention establishes jagged bolt arrangement schematic diagram;
fig. 3 is the 3-D view of Fig. 2.
being labeled as in accompanying drawing: 1-bolt head, 2-recess, 3-polished rod section, 4-thread section, 5-changeover portion, the 6-conical surface, 7-arc transition, 8-rounded face, 9-chamfering, 10-protecting cover, 10.1-annular slot, 11-elastic seal ring, 12-machinery.
Embodiment
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
embodiments of the invention: implement of the present invention a kind of prevent bolt fracture to be scattered method time, the recess of its notch bolt makes requirement and can make by the regulation of prior art, during making, the bolt of polished rod section and thread section will be established jagged bolt to be made into have in advance, and changeover portion is set in the joint of recess and polished rod section and thread section, make the diameter of changeover portion be less than polished rod section and thread section diameter and be greater than the diameter of recess, then when adopting this to establish jagged bolt to connect, a protecting cover is overlapped in the polished rod section part of bolt, an elastic seal ring is at least installed in this protecting cover, this elastic seal ring is closely enclosed within the changeover portion of bolt, like this when establishing jagged bolt in use, when there is fracture in indent, because the protecting cover on bolt is by the compact siro spinning technology effect of elastic seal ring and bolt changeover portion, thus effectively prevent post-rift bolt to be scattered.
as shown in Figure 1-Figure 3, the screw rod that this assembly is included in bolt is provided with the bolt of bolt head 1 and recess 2 to the of the present invention a kind of structural representation bearing the notch bolt assembly of superimpose loads power built according to said method; The screw rod of the recess 2 of bolt near bolt head 1 side is made as polished rod section 3, the screw rod of recess 2 opposite side is made as thread section 4, changeover portion 5 is produced respectively at recess 2 and the joint of polished rod section 3 and thread section 4, make the diameter of changeover portion 5 be less than the diameter of polished rod section 3 and thread section 4, the diameter of recess 2 is less than the diameter of changeover portion 5; The polished rod section 3 of bolt is overlapped a protecting cover 10(protecting cover 10 can adopt metallic material to make), recess 2 and all changeover portions 5 part can all be covered in by protecting cover 10, and the polished rod section 3 of bolt coordinates with protecting cover 10 the mode preferably adopting transition fit; In protecting cover 10, producing the annular slot 10.1 for fixing elastic seal ring 11, an elastic seal ring 11 being at least installed in the annular slot 10.1 of protecting cover 10, and this elastic seal ring 11 is fastened on changeover portion 5; During making, preferably in protecting cover 10, two elastic seal rings 11 are installed, and on the changeover portion 5 making two elastic seal rings 11 be fastened in recess 2 both sides respectively (as shown in Figure 1); Elastic seal ring 11 can adopt General Purpose Rubber seal ring of the prior art or malthoid formula seal ring; In order to strengthen the intensity of bolt, the connection of changeover portion 5 and polished rod section 3 and thread section 4 being made into the conical surface 6 and connecting, bolt head 1 and polished rod section 3 being made as arc transition 7 and being connected; Convenient in order to use, bolt head 1 is made as six square toes, and six square toes bottom surfaces are made as rounded face 8, simultaneously produce chamfering 9 at the end face of thread section 4.
Claims (10)
1. the method preventing bolt fracture to be scattered, it is characterized in that: will jagged bolt be established to be made into have the bolt of polished rod section and thread section in advance, and changeover portion is set in the joint of recess and polished rod section and thread section, make the diameter of changeover portion be less than polished rod section and thread section diameter and be greater than the diameter of recess, then when adopting this to establish jagged bolt to connect, a protecting cover is overlapped in the polished rod section part of bolt, an elastic seal ring is at least installed in this protecting cover, this elastic seal ring is closely enclosed within the changeover portion of bolt, like this when establishing jagged bolt in use, when there is fracture in indent, because the protecting cover on bolt is by the compact siro spinning technology effect of elastic seal ring and bolt changeover portion, thus effectively prevent post-rift bolt to be scattered.
2. bear a notch bolt assembly for superimpose loads power, the screw rod being included in bolt is provided with the bolt of bolt head (1) and recess (2); It is characterized in that: the screw rod of recess (2) near bolt head (1) side of bolt is polished rod section (3), the screw rod of recess (2) opposite side is thread section (4), changeover portion (5) is provided with at recess (2) and the joint of polished rod section (3) and thread section (4), the diameter of changeover portion (5) is less than the diameter of polished rod section (3) and thread section (4), and the diameter of recess (2) is less than the diameter of changeover portion (5); Protecting cover (10) is had at the upper cover of the polished rod section (3) of bolt, and recess (2) and all changeover portions (5) all cover in by protecting cover (10), an elastic seal ring (11) is at least installed in protecting cover (10), and this elastic seal ring (11) is fastened on changeover portion (5).
3. the notch bolt assembly bearing superimpose loads power according to claim 2, it is characterized in that: two elastic seal rings (11) are installed in protecting cover (10), and two elastic seal rings (11) are fastened on the changeover portion (5) on recess (2) both sides respectively.
4. the notch bolt assembly of the superimpose loads power of bearing according to Claims 2 or 3, is characterized in that: in protecting cover (10), be provided with the annular slot (10.1) for fixing elastic seal ring (11).
5. the notch bolt assembly of the superimpose loads power of bearing according to Claims 2 or 3, is characterized in that: described elastic seal ring (11) is rubber seal or malthoid formula seal ring.
6. the notch bolt assembly bearing superimpose loads power according to claim 2, is characterized in that: the polished rod section (3) of bolt is transition fit with coordinating of protecting cover (10).
7. bear the notch bolt assembly of superimpose loads power according to claim 2, it is characterized in that: described changeover portion (5) is that the conical surface (6) connects with the connection of polished rod section (3) and thread section (4).
8. bear the notch bolt assembly of superimpose loads power according to claim 2, it is characterized in that: described bolt head (1) with polished rod section (3) for arc transition (7) is connected.
9. bear the notch bolt assembly of superimpose loads power according to claim 8, it is characterized in that: described bolt head (1) is six square toes, six square toes bottom surfaces are rounded face (8).
10. bear the notch bolt assembly of superimpose loads power according to claim 2, it is characterized in that: the end face of described thread section (4) is provided with chamfering (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414985.2A CN104179768B (en) | 2014-08-22 | 2014-08-22 | The method preventing bolt fracture to be scattered and bear the notch bolt assembly of superimpose loads power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410414985.2A CN104179768B (en) | 2014-08-22 | 2014-08-22 | The method preventing bolt fracture to be scattered and bear the notch bolt assembly of superimpose loads power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104179768A CN104179768A (en) | 2014-12-03 |
| CN104179768B true CN104179768B (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410414985.2A Active CN104179768B (en) | 2014-08-22 | 2014-08-22 | The method preventing bolt fracture to be scattered and bear the notch bolt assembly of superimpose loads power |
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| CN (1) | CN104179768B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107202057A (en) * | 2017-06-16 | 2017-09-26 | 航天精工股份有限公司 | A kind of pair of countersunk head blind riveting pumping nail |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2692632B1 (en) * | 1992-06-19 | 1995-12-01 | Dubuis | INSERT TO BE REPORTED AND FIXED IN AN ELEMENT. |
| CN1483549A (en) * | 2003-08-06 | 2004-03-24 | 佘国光 | Method for fixing end and cover-ring on smooth rod and products thereof |
| DE102007049744A1 (en) * | 2007-10-16 | 2009-04-23 | Fischerwerke Gmbh & Co. Kg | Expansion anchor, for drillings in concrete, has an ellipsoid expansion body pushed into an expansion sleeve |
| CN202833521U (en) * | 2012-10-24 | 2013-03-27 | 浙江曙光汽车标准件有限公司 | Bearing sleeve sealing bolt |
| CN204003869U (en) * | 2014-08-22 | 2014-12-10 | 贵州航天精工制造有限公司 | A kind of notch bolt assembly that bears superimpose loads power |
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- 2014-08-22 CN CN201410414985.2A patent/CN104179768B/en active Active
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| CN104179768A (en) | 2014-12-03 |
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