CN201836190U - High-strength hexagon-flange-faced self-lubricating torsional bolt connection set - Google Patents
High-strength hexagon-flange-faced self-lubricating torsional bolt connection set Download PDFInfo
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- CN201836190U CN201836190U CN2011200375911U CN201120037591U CN201836190U CN 201836190 U CN201836190 U CN 201836190U CN 2011200375911 U CN2011200375911 U CN 2011200375911U CN 201120037591 U CN201120037591 U CN 201120037591U CN 201836190 U CN201836190 U CN 201836190U
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Abstract
The utility model relates to a high-strength hexagon-flange-faced self-lubricating torsional bolt connection set, which comprises a bolt, a nut and a gasket. The head of the bolt is hexagonal, the inner side of the bolt head is provided with a circular flange face, the end of the screw rod of the bolt is provided with a plum blossom-shaped tail part, and an annular incision is arranged between the tail part and the screw rod; and the nut is screwed on the threads of the bolt, and the gasket is arranged between the circular flange face on the inner side of the bolt head and the nut. The utility model has the beneficial effects that the tightening axial force can be easily controlled and is relatively stable, and fewer human factors can affect tightening; the bolt connection set is convenient to install and remove and has high working efficiency; and the bolt connection set can be rechecked in a torque-coefficient construction method.
Description
Technical field
The utility model relates to a kind of bolt auxiliary connection, relates in particular to the structure of this bolt auxiliary connection.
Background technique
The high-strength bolt auxiliary connection mainly is divided into two kinds of big hex head bolt auxiliary connection and torque-shear type bolt auxiliary connections in the prior art, its switching performance and the mechanical property of itself all are identical, profile difference only, all be the size of determining the bolt axial force with torque, but it all exist pluses and minuses separately.
As seen from Figure 1: big hex head bolt auxiliary connection is made up of a hex head bolt 10, nut 11, two packing rings (12,13).During installation nut is screwed into bolt, one of them packing ring 12 fills up place, R angle under bolt head, and another packing ring 13 fills up in the nut working surface.Torque coefficient when reviewing according to dispatching from the factory subsequently is with formula T=P*K*D (T: whole screwing torque value; P: pretension reference value; K: torque coefficient; D: the diameter of bolt) calculate the construction moment of torsion, apply moment of torsion for nut 11 by this moment of torsion with torque wrench, thereby reach the fastener shaft power of expection.But in the as installed process, because torque coefficient is a variable, each trickle variation all can have influence on the construction torque value.Can produce stubbornly when torque value is too high, cause bolt overburden operation, As time goes on, make the bolt problems such as bar that crack, contract, finally cause bolt fracture.And cross when low when torque value, can make bolt not reach predetermined fastener shaft power, produce and owe stubborn, thereby cause the junction surface friction ractor to descend, bearing capacity descends.Therefore when big hex head bolt auxiliary connection is installed, still than higher, this certainly will also can have influence on whole working efficiency for construction workman's competency profiling.
As seen from Figure 2: torque-shear type bolt auxiliary connection is made up of a bolt 20, nut 21, packing ring 22.Bolt head is semicircle shape, and its screw rod end has the blossom type afterbody, between afterbody and the screw rod annular incision is arranged, i.e. stress groove is used for the fastener shaft power of control connection pair.During construction, nut is screwed into bolt, the packing ring pad is in the nut working surface, and dropping with special-purpose fastened tools fastening nut to afterbody wabbler is fastening finishing, thus can not occur when stubborn end leaking phenomenons such as stubborn, simple to operate, easy construction.Do not need calculated torque during also because of its construction, thereby therefore can avoid occurring replaces torque wrench can't guarantee that the phenomenon of whole screwing torque occurs because of mistake in computation or with common wrench.But because of bolt head is semicircle shape, can't fix, if, just can't continue again to have constructed executing stubborn or in the repair demolition process, transfer phenomenon occurring.
Be necessary to design a kind of auxiliary connection in conjunction with above-mentioned two kinds of auxiliary connection structures.
Summary of the invention
The utility model technical issues that need to address have provided a kind of high strength hexagonal flanged surface selflubricating torque-shear type bolt auxiliary connection, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: a bolt, a nut and a packing ring; The bolt head shape of described bolt is the hexagonal shape, and the bolt head inboard is provided with a circular flange face, and the screw rod end of bolt has the blossom type afterbody, between afterbody and the screw rod annular incision is arranged; Nut is screwed in the screw thread of bolt, and packing ring is between bolt head inner circular flanged surface and nut.
Compared with prior art, the beneficial effects of the utility model are: fastener shaft power is controlled easily, and is more stable, and artifical influence factor is less; Installation, convenient disassembly, high working efficiency; Can adopt the torque coefficient construction method to recheck.
Description of drawings
Fig. 1 is a big hex head bolt auxiliary connection structural representation in the prior art.
Fig. 2 is a torque-shear type bolt auxiliary connection structural representation in the prior art.
Fig. 3 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
From Fig. 3 as seen, the utility model comprises: bolt 1, a nut 2 and a packing ring 3; The bolt head shape of described bolt 1 is the hexagonal shape, and the bolt head inboard is provided with a circular flange face 6, and the screw rod end of bolt 1 has blossom type afterbody 4, and annular incision 5 is arranged between afterbody and the screw rod; Nut 2 is screwed in the screw thread of bolt 1, and packing ring 3 is between bolt head inner circular flanged surface 6 and nut 2.
Handle through phosphatization on the surface of described bolt 1, nut 2 and packing ring 3.
The utility model bolt combines the head of big hex head bolt and the blossom type afterbody of torque-shear type bolt, and is connecting in the bolt head inboard and to increase a circular flange face, is used for increasing the bolt head area of contact, and dispersive pressure reduces wearing and tearing.Solved big hex head bolt construction inconvenience, inefficiency, torque-shear type bolt head area of contact is little, and bolt transfer head such as can't fix at problem during installation.Secondly the utility model is by handling (a kind of surface treatment) to the bolt alramenting, nut collar through phospholeumization reach certain lubricated after, can control the friction factor between screw thread and between the supporting surface effectively, thereby guaranteed the dispersion ratio of auxiliary connection torque coefficient and fastener shaft power, when rechecking when not reaching required pretightening force, can carry out twisting again with wrest fixing spanner by big hexagon head, thoroughly remedied deficiency separately, make it can not only be at railroad bridge, boiler power plant, used on the tall building, can also be in aircraft factory, bring into play himself characteristic in the higher field such as nuclear power station.
---the head moulding---------rut groove---phosphatization that heat treatment---is rolled tooth---that bar contracts of cutting edge that the main manufacturing process of the utility model is: fracture.Its auxiliary connection is by a bolt, a nut and the cover product that washer combinations forms.
The shape of hexagonal flanged surface torque-shear type bolt mainly combines the head of big hex head bolt and the wabbler of torque-shear type bolt, also connecting a circular flange face on this basis in the bolt head inboard, its effect is to be used for increasing the bolt head area of contact, and dispersive pressure reduces wearing and tearing.
The control tightening torque is the key of all high-strength bolt auxiliary connections, and the utility model has passed on the advantage of torque-shear type auxiliary connection, all belongs to from the scalar type auxiliary connection.Its construction tightening torque is mainly determined by the stress groove diameter between screw rod and the bolt tail wabbler, and stress groove size Control is the key of control fastener shaft power construction method, the utility model by adopt accurate numerical control car system method make stress groove size be controlled at effectively≤very low range of 0.05mm in.Bolt is handled by alramenting, nut collar through phospholeumization reach certain lubricated after, can control the friction factor between screw thread and between the supporting surface effectively, thereby guarantee the dispersion ratio of auxiliary connection torque coefficient and fastener shaft power.The utility model adopts special electric spanner when construction, this electric wrench is furnished with inside and outside two sleeve pipes, and outer sleeve is turned round nut, bolt is applied moment of torsion, and inner sleeve is oppositely turned round wabbler, and two torque equate, direction is opposite, twists to the afterbody wabbler, directly reaches the pretension value.Compare big hexagonal auxiliary connection, it is simple to operate, easy construction, and artifical influence factor is less.
Be different from the torque-shear type auxiliary connection, hexagonal flanged surface torque-shear type auxiliary connection when not reaching required pretightening force, can carry out twisting again with wrest fixing spanner during reinspection after installing by big hexagon head.In when dismounting, the transfer of excuse portion can not take place yet and problem, easy construction such as can't lay down.
Claims (1)
1. a high strength hexagonal flanged surface selflubricating torque-shear type bolt auxiliary connection comprises: a bolt, a nut and a packing ring; It is characterized in that: the bolt head shape of described bolt is the hexagonal shape, and the bolt head inboard is provided with a circular flange face, and the screw rod end of bolt has the blossom type afterbody, between afterbody and the screw rod annular incision is arranged; Nut is screwed in the screw thread of bolt, and packing ring is between bolt head inner circular flanged surface and nut; Handle through phosphatization on the surface of described bolt, nut and packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200375911U CN201836190U (en) | 2011-02-12 | 2011-02-12 | High-strength hexagon-flange-faced self-lubricating torsional bolt connection set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200375911U CN201836190U (en) | 2011-02-12 | 2011-02-12 | High-strength hexagon-flange-faced self-lubricating torsional bolt connection set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201836190U true CN201836190U (en) | 2011-05-18 |
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ID=44006295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200375911U Expired - Lifetime CN201836190U (en) | 2011-02-12 | 2011-02-12 | High-strength hexagon-flange-faced self-lubricating torsional bolt connection set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201836190U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287436A (en) * | 2011-07-28 | 2011-12-21 | 东风汽车有限公司 | Hexagonal flange face bolt |
| CN110319105A (en) * | 2019-05-09 | 2019-10-11 | 航天精工股份有限公司 | A kind of Novel threaded auxiliary connection and its installing mechanism |
| CN113530945A (en) * | 2021-07-21 | 2021-10-22 | 宁波九龙创展紧固件股份有限公司 | Large-hexagon high-strength bolt connecting pair and production process thereof |
| CN113530946A (en) * | 2021-07-21 | 2021-10-22 | 宁波九龙创展紧固件股份有限公司 | Round-head torsional shear type high-strength bolt connection pair and production process thereof |
-
2011
- 2011-02-12 CN CN2011200375911U patent/CN201836190U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287436A (en) * | 2011-07-28 | 2011-12-21 | 东风汽车有限公司 | Hexagonal flange face bolt |
| CN110319105A (en) * | 2019-05-09 | 2019-10-11 | 航天精工股份有限公司 | A kind of Novel threaded auxiliary connection and its installing mechanism |
| CN113530945A (en) * | 2021-07-21 | 2021-10-22 | 宁波九龙创展紧固件股份有限公司 | Large-hexagon high-strength bolt connecting pair and production process thereof |
| CN113530946A (en) * | 2021-07-21 | 2021-10-22 | 宁波九龙创展紧固件股份有限公司 | Round-head torsional shear type high-strength bolt connection pair and production process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |