CN202056179U - High-strength bolt connecting pair - Google Patents
High-strength bolt connecting pair Download PDFInfo
- Publication number
- CN202056179U CN202056179U CN2011201578025U CN201120157802U CN202056179U CN 202056179 U CN202056179 U CN 202056179U CN 2011201578025 U CN2011201578025 U CN 2011201578025U CN 201120157802 U CN201120157802 U CN 201120157802U CN 202056179 U CN202056179 U CN 202056179U
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- China
- Prior art keywords
- bolt
- protection layer
- nut
- strength bolt
- gasket
- 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.)
- Expired - Lifetime
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Abstract
A high-strength bolt connecting pair comprises a bolt provided with a screw head and a screw rod, a nut and a gasket, wherein the nut and the gasket are sleeved on the screw rod in rotary mode. An antirust protection layer is respectively arranged on the surfaces of the bolt, the nut and the gasket, and a dry film lubricating agent layer is covered outside the antirust protection layer. Due to the antirust protection layer and the dry film lubricating agent layer coated on the surfaces of the bolt, the nut and the gasket, the high-strength bolt connecting pair is high in antirust capacity and can meet a requirement of torque coefficient regulated in a national standard.
Description
(1) technical field
The utility model relates to a kind of bolt auxiliary connection.
(2) background technique
Generally being used for some bolt auxiliary connections to the higher facility of security requirement such as railway, bridge, boiler steel structure, industrial premises, high-rise civil building, tower mast structure, Hoisting Machinery is the high-strength bolt auxiliary connection, in the construction reference of relevant industries, all higher to the required precision of bolted fastener shaft power, the mounting type of bolt is commonly " calibrated wrench method ", applies specific moment of torsion during promptly by installation and reaches accurate fastener shaft power.For realizing this purpose, prerequisite precondition is: the torque coefficient of bolt auxiliary connection must be accurate relatively.
In order to reach the torque coefficient requirement of regulation, reply bolt, nuts and washers should carry out surface treatment, under state-of-the art, satisfy in the standard requirement to torque coefficient, generally can only take phosphatization or turn black these two kinds of surface treatment modes that antirust ability is relatively poor, for the application of the antirust ability of having relatively high expectations, be can not make customer satisfaction system.
(3) summary of the invention
In order to overcome the above-mentioned deficiency of existing bolt auxiliary connection, the utility model provides a kind of high-intensity, bolt auxiliary connection that the rust protection ability is good.
The technical scheme in the invention for solving the technical problem is: a kind of high-strength bolt auxiliary connection; comprise bolt and the nuts and washers of rotation set on this screw rod with spiral shell head and screw rod; all have one deck corrosion protection layer on the surface of described bolt, described nut and described packing ring, described corrosion protection layer also is coated with one deck dry lubricant layer outward.
Further, described corrosion protection layer is spelter coating or zinc-chromium coating, and described dry lubricant layer is the dry lubricant layer that contains molybdenum disulfide.
The beneficial effects of the utility model are: owing to apply one deck corrosion protection layer and dry lubricant layer on the surface of bolt, nuts and washers, make to the utlity model has higher antirust ability, and can reach the torque coefficient requirement of stipulating in the GB.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to Fig. 1; a kind of high-strength bolt auxiliary connection; comprise bolt and nut 3 and the packing ring 4 of rotation set on this screw rod 2 with spiral shell head 1 and screw rod 2; all have one deck corrosion protection layer on the surface of described bolt, described nut 3 and described packing ring 4, described corrosion protection layer also is coated with the dry lubricant layer outward.Corrosion protection layer described in the present embodiment is spelter coating or zinc-chromium coating, and described dry lubricant layer is the dry lubricant layer that contains molybdenum disulfide.Dry lubricant is the GLEITMO oiling agent that Volkdwagen oil product group (FUCHS PETROLUB AG) produces, and the granularity of molybdenum disulfide is 1900～2100 orders.
Owing on the surface of bolt, nut 3 and packing ring 4, apply one deck corrosion protection layer and dry lubricant layer, make to the utlity model has higher antirust ability, and can reach the torque coefficient requirement of stipulating in the GB.
Claims (2)
1. high-strength bolt auxiliary connection; comprise bolt and the nuts and washers of rotation set on this screw rod with spiral shell head and screw rod; it is characterized in that: all have one deck corrosion protection layer on the surface of described bolt, described nut and described packing ring, described corrosion protection layer also is coated with one deck dry lubricant layer outward.
2. high-strength bolt auxiliary connection as claimed in claim 1 is characterized in that: described corrosion protection layer is spelter coating or zinc-chromium coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201578025U CN202056179U (en) | 2011-05-16 | 2011-05-16 | High-strength bolt connecting pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201578025U CN202056179U (en) | 2011-05-16 | 2011-05-16 | High-strength bolt connecting pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202056179U true CN202056179U (en) | 2011-11-30 |
Family
ID=45016150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201578025U Expired - Lifetime CN202056179U (en) | 2011-05-16 | 2011-05-16 | High-strength bolt connecting pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202056179U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575456A (en) * | 2017-10-17 | 2018-01-12 | 苏州华丰不锈钢紧固件有限公司 | A kind of high intensity hexagon flange bolt |
| CN109372868A (en) * | 2018-09-29 | 2019-02-22 | 江苏永昊高强度螺栓有限公司 | The fastening method of bolt |
-
2011
- 2011-05-16 CN CN2011201578025U patent/CN202056179U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575456A (en) * | 2017-10-17 | 2018-01-12 | 苏州华丰不锈钢紧固件有限公司 | A kind of high intensity hexagon flange bolt |
| CN109372868A (en) * | 2018-09-29 | 2019-02-22 | 江苏永昊高强度螺栓有限公司 | The fastening method of bolt |
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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 |
Granted publication date: 20111130 |
|
| CX01 | Expiry of patent term |