CN2312357Y - Agnail and anti-drawing out type expanding screw bolt - Google Patents

Agnail and anti-drawing out type expanding screw bolt Download PDF

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Publication number
CN2312357Y
CN2312357Y CN 97226352 CN97226352U CN2312357Y CN 2312357 Y CN2312357 Y CN 2312357Y CN 97226352 CN97226352 CN 97226352 CN 97226352 U CN97226352 U CN 97226352U CN 2312357 Y CN2312357 Y CN 2312357Y
Authority
CN
China
Prior art keywords
bolt
screw bolt
hollow
plug
screw
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 - Fee Related
Application number
CN 97226352
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Chinese (zh)
Inventor
张启强
Original Assignee
张启强
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 张启强 filed Critical 张启强
Priority to CN 97226352 priority Critical patent/CN2312357Y/en
Application granted granted Critical
Publication of CN2312357Y publication Critical patent/CN2312357Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an inverse hook type anti-drawing expanding screw bolt which is composed of a screw bolt, a screw cap and an expanding plug, wherein the screw bolt is hollow and the front end of the hollow inner part of the screw bolt is provided with a conical surface. A circular ring type inverse hook is arranged on the surface of an outer cylinder on the front end of the screw bolt, and an open groove is arranged in the front end of the screw bolt along the axial direction. The expanding plug is installed in the hollow inner part of the screw bolt and is a cylinder, and the front end of the expanding plug forms a spherical surface shape. The screw cap is provided with the screw threads of the screw bolt. The utility model has the advantages of favorable anti-drawing performance and convenient installation. After installed, the utility model is difficult to be drawn out even if a crowbar is adopted. When installed, the utility model is put into a drilled hole and the screw bolt can be fixed by using a hammer to strike the expanding plug through an iron rod.

Description

The anti-EXPANSION ANCHOR BOLTS of dialling of fluking type
The utility model relates to a kind of EXPANSION ANCHOR BOLTS.
At present, EXPANSION ANCHOR BOLTS commonly used generally all is to lean on the conical surface of bolt front end that a hollow bloated tube that has opening slot is swollen in the prior art, thereby reach the fixing purpose that expands, the shortcoming of this EXPANSION ANCHOR BOLTS of the prior art is: because the nose circle conical surface of bolt is directly through less, after the tube that make to expand expands directly through also smaller, and the tube that expands generally all is ganoid cylinder, even thereby after bolt tightens, the frictional force of its bolt and mounting hole is also less, is easy to be pulled out; Secondly when mounted, bolt skids easily, installs very inconvenient.
The purpose of this utility model is: provide a kind of extraction-resistant behavior fluking type resistance to plucking EXPANSION ANCHOR BOLTS better, easy for installation.
The utility model is to constitute like this: it is made up of bolt (1), nut (2), the plug (3) that expands, bolt (1) is hollow, and the front end in bolt (1) hollow interior has conical surface (4), circular ring type barb (5) is arranged on the outer cylinder surface of bolt (1) front end, prolonging axial direction at the front end of bolt (1) opening slot (6) is being arranged, the plug (3) that expands is contained in bolt (1) hollow, and the plug (3) that expands is a spherical shape for cylindrical body and its front end, and nut (2) is gone up on the screw thread of bolt (1).
The utility model is compared with traditional expansion bolt, has good, the easy for installation advantage of extraction-resistant behavior, after it is installed, even adopt crowbar also to be not easy it is extracted.During installation, bore individual straight through the same hole earlier on the wall with bolt (1), bolt (1) is put into the hole, in the hollow hole with the higher iron rod inserting bolt (1) of intensity, and impact this iron rod with hammer, can swell by the front end of bloated plug (3) like this, its barb (5) is embedded in the wall brick bolt (1), thus bolt is fixing firmly on the wall.
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2 is the left view of accompanying drawing 1.
Embodiment of the present utility model: bolt (1) is made into surperficial screwed hollow cylinder, and produce conical surface (4) at the front end of its hollow interior, the tapering of conical surface (4) can not be too big, the plug (3) that guarantees to expand can form self-locking when being in contact with it, on the outer cylinder surface of bolt (1) front end, produce 1~5 circle circular ring type barb (5), and prolonging axial direction at the front end of bolt (1) and driving a criss-cross opening slot (6), the height that the degree of depth of opening slot (6) is about above the conical surface (4) gets final product, the plug (3) that will expand is made into the cylindrical body that front end is a spherical shape, and it is contained in bolt (1) hollow, nut (2) is gone up on the screw thread of bolt (1).

Claims (1)

1, a kind of fluking type resistance to plucking EXPANSION ANCHOR BOLTS, it is made up of bolt (1), nut (2), the plug (3) that expands, it is characterized in that: bolt (1) is for hollow, and the front end in bolt (1) hollow interior has conical surface (4), circular ring type barb (5) is arranged on the outer cylinder surface of bolt (1) front end, prolonging axial direction at the front end of bolt (1) opening slot (6) is being arranged, the plug (3) that expands is contained in bolt (1) hollow, the plug (3) that expands is that cylindrical body and its front end are spherical shape, and nut (2) is gone up on the screw thread of bolt (1).
CN 97226352 1997-10-27 1997-10-27 Agnail and anti-drawing out type expanding screw bolt Expired - Fee Related CN2312357Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97226352 CN2312357Y (en) 1997-10-27 1997-10-27 Agnail and anti-drawing out type expanding screw bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 97226352 CN2312357Y (en) 1997-10-27 1997-10-27 Agnail and anti-drawing out type expanding screw bolt

Publications (1)

Publication Number Publication Date
CN2312357Y true CN2312357Y (en) 1999-03-31

Family

ID=33940118

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 97226352 Expired - Fee Related CN2312357Y (en) 1997-10-27 1997-10-27 Agnail and anti-drawing out type expanding screw bolt

Country Status (1)

Country Link
CN (1) CN2312357Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104385353A (en) * 2014-10-10 2015-03-04 哈尔滨理工大学 Removed material collecting and dust removing system during drilling process of carbon fiber composite material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104385353A (en) * 2014-10-10 2015-03-04 哈尔滨理工大学 Removed material collecting and dust removing system during drilling process of carbon fiber composite material
CN104385353B (en) * 2014-10-10 2016-01-20 哈尔滨理工大学 Carbon fibre composite drilling process removes material collection and dust pelletizing system

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee
C19 Lapse of patent right due to non-payment of the annual fee