CN203257852U - Bolt set capable of preventing rotation during fastening - Google Patents
Bolt set capable of preventing rotation during fastening Download PDFInfo
- Publication number
- CN203257852U CN203257852U CN 201320167071 CN201320167071U CN203257852U CN 203257852 U CN203257852 U CN 203257852U CN 201320167071 CN201320167071 CN 201320167071 CN 201320167071 U CN201320167071 U CN 201320167071U CN 203257852 U CN203257852 U CN 203257852U
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- CN
- China
- Prior art keywords
- bolt
- nut
- connecting rod
- bolts
- screw rod
- 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
The utility model belongs to the technical field of structure fasteners, and particularly relates to a bolt set capable of preventing rotation during fastening. The bolt set comprises a left bolt, a right bolt, a connecting rod and a welding seam. The left bolt is connected with the right bolt by means of the connecting rod through the welding seam. The left bolt and the right bolt mutually rotate and accordingly a screw rod is prevented from rotating. By means of the structure of the bolts, the problem that the screw rod rotates when the bolts are fastened is solved. Compared with the prior art, nuts are needless to be fastened with a wrench by a person who is intentionally dispatched, requirements for an operation space are also reduced, and use limiting conditions of the bolts are reduced. The bolt set is quick to machine, easy to operate and low in cost and has a wide application prospect.
Description
Technical field
The utility model belongs to the structural fasteners field, is specifically related to a kind of bolt group---anti-fastening swivel bolt group of rotating when fastening of can preventing.
Background technique
Bolt uses very extensive in the construction steel structure assembling as fastening piece, with respect to other Connecting format such as weld seam, rivets, have the following advantages:
(1) stress performance is good.Rivet is by being cut and the pressure-bearing power transmission, and the higher stress of nail hole periphery generation is concentrated; The weld heat-affected zone of Site Welding forms serious welding residual stress, and these all can affect the safe handling of joint.And bolt connects, and particularly friction type high strength bolt connects and is to transmit external force by the frictional force on steel plate Contact surface, and the stress concentration phenomenon in joint improves, and has improved the anti-fatigue performance of link.
When (2) constructing, labor intensity alleviates, and has improved working condition.
(3) speed of application is fast, and simple installation is convenient to batch production, standardized production; Change flexibly, be beneficial to maintenance.
Bolt is often used as the fastening piece in structure, can be divided into nut, screw rod, nuts and washers on consisting of.When screwing nut, if the friction between nut and fastener, packing ring and fastener is less, screw rod can be followed nut and be rotated together, can't reach the effect of tightening fastening.Under the condition that allows in the operating space, operator can be with spanner at nut side hold-doun nut, at nut sidespin jack panel with fastening.This needs to be equipped with specially a manual operation spanner hold-doun nut on the one hand; On the other hand, (such as during the section structural member of remaining silent connects) under certain conditions, operator can't get at nut side and nut side bilateral space, can't use the spanner hold-doun nut when screwing nut, and screw rod is followed the nut rotation that is screwed and can't be completed fastening.When particularly using frictional high-strength bolts, bolt need to apply certain pretightening force with torque wrench just can reach the usage requirement of bolt, when the phenomenon of screw rod transfer occurs when, moment of torsion often can't be applied to predetermined value, and this makes the use under these conditions of frictional high-strength bolts be affected.
Summary of the invention
The utility model purpose is to overcome above-mentioned the deficiencies in the prior art, and a kind of bolt group that is easy to construct is provided, but under the condition of manual operation spanner hold-doun nut, self solves the problem of screw rod transfer not needing to be equipped with specially.The operating space of this bolt group nut side during to clamping bolt does not require, during clamping bolt, operator can't get at nut side operating space and also can prevent the screw rod transfer, thereby make fastening under some condition (section structural member connects such as remaining silent) of bolt be completed smoothly.
Technical solutions of the utility model are characterized by:
A kind of anti-fastening swivel bolt group, it is characterized in that, formed by two groups of left and right bolt unit, both connect by connecting rod, every group of bolt unit itself belongs to conventional structure, be comprised of nut, nut and screw rod, be used for fastening object (being fastened member), weld respectively on the two groups of bolt unit in left and right nut separately at described connecting rod two ends.
Further additional technical feature, described bolt unit can also increase by two packing rings, and during fastening object, described packing ring is located at respectively in surface of contact between nut, nut and object.
The utility model has the following advantages with respect to prior art:
(1) utilize connecting rod to connect two of left and right bolts and form the bolt groups, can retrain each other between two bolts: when the nut of fastening left side bolt, the bolt on the right provides rotational restraint by connecting rod for it, can prevent that its screw rod from following the nut rotation that is screwed.Utilize the constrained each other with respect to artificial method that prevents transfer with the spanner hold-doun nut of extra increase in the past of himself, can save one manually.
(2) connecting rod is weldingly fixed on the nut of two bolts in left and right, when operator can't get at nut side operating space when clamping bolt, also can utilizes the mutual constraint between two bolts of bolt group to prevent that bolt from transfer occuring when fastening.In addition, the operating space size restrictions, when spanner was inconvenient to lay, this bolt group also can be completed the effect of anti-transfer easily, and very little to the requirement of operating space.
(3) use the mode that is welded and fixed connecting rod and nut, processing is quick, and simple to operate, cost is lower.
Description of drawings
Fig. 1 is anti-fastening swivel bolt group view (facing).
Fig. 2 is anti-fastening swivel bolt group view (overlooking).
Fig. 3 uses diagram for anti-fastening swivel bolt group.
Number in the figure: connecting rod 1, the weld seam 2 of connection left side bolt and connecting rod, the nut 3 on the left side, packing ring 4, the screw rod 5 on the left side, the nut 6 on the left side, the weld seam 7 of bolt and connecting rod on the right of connecting, the nut 8 on the right, packing ring 9, the screw rod 10 on the right, the nut 11 on the right, fastened member 12.
Embodiment
The anti-fastening swivel bolt group that the utility model proposes is comprised of nut, nut, screw rod, packing ring and connecting rod.Wherein: connecting rod 1 connects two bolts in left and right, respectively by weld seam 2 and 7 be fixed on left side bolt nut 3 with the right bolt nut 8 on.Left side bolt comprises nut 3, packing ring 4, screw rod 5, nut 6, and the right bolt comprises nut 8, packing ring 9, screw rod 10, nut 11.
Above-mentioned connecting rod 1 two ends are welded on nut 3 and nut 8.
Above-mentioned connecting rod 1 length is followed according to the spacing between the bolt of left and right and is determined.And the sectional shape of connecting rod 1 can be other shapes such as circular, square, triangle.
Above-mentioned nut 3, packing ring 4, screw rod 5, nut 6 are the left side one cover bolt.
Above-mentioned nut 8, packing ring 9, screw rod 10, nut 11 are the right one cover bolt.
Above-mentioned left side cover bolt overlaps bolt specification with the right, can select identically, also can select difference.
The utility model is as a kind of structural fasteners, in use:
The specification of bolt is determined in usage requirement according to structure, comprises the diameter of bolt, wood property, length etc.
Determine spacing between two bolts of bolt group according to structural design.
Determine the length of connecting rod according to the spacing between two bolts, determine the sectional dimension of connecting rod according to two bolts to diameter.
During concrete enforcement, the length of connecting rod should be less than the centre distance of two bolt screw rods, and for convenience of welding, sectional dimension should be less than 2/3 of the diameter of two bolt nuts.
Anti-fastening swivel bolt group in use, first two bolts with the bolt group penetrate in corresponding bolt hole together, after installing packing ring, can spin by hand nut, slightly do fasteningly, get final product at nut sidespin nutting clamping bolt according to Its Relevant Technology Standards afterwards.
Claims (1)
1. prevent fastening swivel bolt group for one kind, it is characterized in that, formed by two groups of left and right bolt unit, both connect by connecting rod, every group of bolt unit itself belongs to conventional structure, be comprised of nut, nut and screw rod, be used for fastening object, weld respectively on the two groups of bolt unit in left and right nut separately at described connecting rod two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320167071 CN203257852U (en) | 2013-04-07 | 2013-04-07 | Bolt set capable of preventing rotation during fastening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320167071 CN203257852U (en) | 2013-04-07 | 2013-04-07 | Bolt set capable of preventing rotation during fastening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257852U true CN203257852U (en) | 2013-10-30 |
Family
ID=49470421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320167071 Expired - Lifetime CN203257852U (en) | 2013-04-07 | 2013-04-07 | Bolt set capable of preventing rotation during fastening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673649A (en) * | 2016-03-15 | 2016-06-15 | 李路 | Strengthening bolt for preventing rotation between steel plates |
-
2013
- 2013-04-07 CN CN 201320167071 patent/CN203257852U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673649A (en) * | 2016-03-15 | 2016-06-15 | 李路 | Strengthening bolt for preventing rotation between steel plates |
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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: 20131030 |