CN2811646Y - Different-diameter anti-theft bolt connection pair - Google Patents
Different-diameter anti-theft bolt connection pair Download PDFInfo
- Publication number
- CN2811646Y CN2811646Y CN 03272142 CN03272142U CN2811646Y CN 2811646 Y CN2811646 Y CN 2811646Y CN 03272142 CN03272142 CN 03272142 CN 03272142 U CN03272142 U CN 03272142U CN 2811646 Y CN2811646 Y CN 2811646Y
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- China
- Prior art keywords
- different
- utility
- diameter
- model
- bolt
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- 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 - Fee Related
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Abstract
The utility model relates to a different-diameter anti-theft bolt connection pair which comprises a different-diameter bolt, a screw cap and a locking cap. The utility model is characterized in that the neck part of a different-diameter bolt head is provided with symmetrical tenon teeth; the tail part of a threaded rod is provided with a coaxially extended diameter reducing threaded rod; one end face of the screw cap is provided with a coaxial circular groove; the outer cylinder face of the locking cap is provided with uniformly distributed grooves. Because the adoption of the installation and connection with a steel structure, the utility model is the different-diameter anti-theft bolt connection pair which prevents structural connection members from loosening and being stolen, and is suitable for the connection of railway rail joints and high speed highway guardrail facilities.
Description
Affiliated technical field
The utility model relates to Steel Structure Installation and connects, and is a kind of loosening and stolen anti-theft bolt auxiliary connection of structural connection that prevents.Can be widely used in railway track joint is connected with freeway guardrail.
Background technique
What tradition was used constitutes auxiliary connection by bolt and nut, since non-anti-theft,, be used for connecting as link with it as high-voltage transmission line towers, freeway guardrail and railway track, exist the loosening and stolen problem of link inevitably.
Summary of the invention
The utility model purpose is to solve above-mentioned deficiency of the prior art, and a kind of reducing anti-theft bolt auxiliary connection is provided, and this auxiliary connection can not only be antitheft effectively, and is convenient to install and device maintenance.
The utility model comprises reducing bolt, nut and locking cap.Its structure characteristic is: the neck at the reducing bolt head is equipped with symmetrical tenon tooth, and the diameter reduction screw rod two that screw rod tail is equipped with coaxial prolongation is equipped with a circular groove coaxial with it at an end face of nut; On the external cylindrical surface of locking cap, be equipped with equally distributed groove.Assembly relation is, the screw flight of reducing bolt and nut screw thread are adaptive, and diameter reduction screw flight and locking cap screw thread that its afterbody prolongs are adaptive.
The utility model beneficial effect is: because the outstanding advantage applies of employing reducing anti-theft bolt auxiliary connection is at ' reducing ', be that same bolt is rolled into the threaded stem that two sections bars directly vary in size, worm tooth is apart from difference, and as adopting the opposite threads rotation direction again, it is better that the back anti-theft effect is installed.
Description of drawings
Fig. 1 is the utility model user mode schematic representation
Fig. 2 is the utility model reducing bolt (1) plan view
Fig. 3 is the utility model reducing bolt (1) plan view
Fig. 4 is the utility model nut (2) plan view
Fig. 5 is the utility model nut (2) plan view
Fig. 6 is the utility model locking cap (3) plan view
Fig. 7 is the utility model locking cap (3) plan view
By the following examples, in conjunction with Figure of description, the utility model is described in further detail.
Fig. 2, Fig. 3 are reducing bolt (1), and its head and neck is equipped with tenon tooth (4), about each tenon tooth; Its screw rod tail has the diameter reduction screw rod (5) of axially-extending
Fig. 4, Fig. 5 are nut (2), and there is a cylinder shape groove (6) its upper-end surface.
Fig. 6, Fig. 7 are locking cap (3), and internal thread is arranged on it, and equally distributed groove (special tool locking groove) (7) is arranged on the external cylindrical surface.
Embodiment
The utility model erection sequence: earlier reducing bolt (1) is penetrated in the connected piece hole, screw in tightening nuts (2) then, use special tool that locking cap (3) is screwed on the diameter reduction screw rod (5) of reducing a chain for binding criminals bolt at last, and be tightened to cylindrical groove (6) bottom of nut (2).
After enforcement installed, the tenon tooth (4) of reducing bolt head neck promptly was rolled into the aperture of connected piece, and the reducing bolt must not be rotated; Because the distance of the tooth on nut (2) worm tooth distance and locking cap (3) the screw rod diameter reduction is unequal, desire falls to twist nut (2) gets loose it again, and then locking cap (3) can not be accepted the axial displacement of equivalent, thereby realizes anti-theft effect.Owing to both thread rotary orientation differences, anti-theft effect is better again.
Claims (1)
- Reducing anti-theft bolt auxiliary connection, comprise reducing bolt, nut and locking cap, its structure characteristic is: the tenon tooth (4) that is equipped with symmetry at reducing bolt head neck, screw rod tail is equipped with the diameter reduction screw rod (5) of coaxial prolongation, end face at nut is equipped with a circular groove (6) coaxial with it, is equipped with equally distributed groove (7) on the external cylindrical surface of locking cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03272142 CN2811646Y (en) | 2003-06-12 | 2003-06-12 | Different-diameter anti-theft bolt connection pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03272142 CN2811646Y (en) | 2003-06-12 | 2003-06-12 | Different-diameter anti-theft bolt connection pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2811646Y true CN2811646Y (en) | 2006-08-30 |
Family
ID=36938033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03272142 Expired - Fee Related CN2811646Y (en) | 2003-06-12 | 2003-06-12 | Different-diameter anti-theft bolt connection pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2811646Y (en) |
-
2003
- 2003-06-12 CN CN 03272142 patent/CN2811646Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20100612 |