CN203627465U

CN203627465U - Self-drilling fixing bolt

Info

Publication number: CN203627465U
Application number: CN201320573872.8U
Authority: CN
Inventors: 王家宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-17
Filing date: 2013-09-17
Publication date: 2014-06-04
Anticipated expiration: 2023-09-17

Abstract

The utility model discloses a self-drilling fixing bolt. The self-drilling fixing bolt comprises a bolt body (1) and a fixing disc (2) disposed at a tail portion of the bolt body (1), and is characterized in that a hollow expansion portion (3) is arranged on the bolt body (1), an inverse-thread screw rod (4) rotating relative to the bolt body (1) is connected in the bolt body (1) in a sleeved manner, an impact drill bit (5) is arranged at the end, outside the bolt body (1), of the inverse-thread screw rod (4), and an inner thread matching with the inverse-thread screw rod (4) is arranged on an inner wall of one end, close to the impact drill bit (5), of the bolt body (1). The self-drilling fixing bolt is simple in structure, delicate in design, convenient and quick to operate, applicable to aerated concrete blocks or hollow bricks and the like to function in fixing.

Description

Self-drilling type fixed bolt

Technical field

The utility model relates to a kind of EXPANSION ANCHOR BOLTS, particularly a kind of self-drilling type fixed bolt.

Background technique

EXPANSION ANCHOR BOLTS is a kind of conventional connector element, it utilizes moving axially of bolt to realize the radially swell of dilation, realizes fixing in body of wall, is for general on fastening on the material such as cement, brick, with low cost because of it, easy to operate, quick and be widely used.But its fastening force of traditional EXPANSION ANCHOR BOLTS is very unreliable, in particular for when the materials such as air entrained concrete piece, hollow brick fixing, its fastening force is less, cannot meet engineering demand.The operating process of simultaneously traditional EXPANSION ANCHOR BOLTS is comparatively loaded down with trivial details: first utilize the electric tools such as drill bit to hole on metope, then the dilation of EXPANSION ANCHOR BOLTS is filled in hole, in the most backward dilation, squeeze into bolt, force dilation radial expansion, realize fixing.It is fixing to be that traditional EXPANSION ANCHOR BOLTS need to just can complete through at least three steps, wastes time and energy.Therefore need now one to address the above problem, be suitable for fixing EXPANSION ANCHOR BOLTS in the type materials such as air entrained concrete piece or hollow brick.

Summary of the invention

The utility model is in order to solve the existing above-mentioned deficiency of prior art, proposes a kind of simple in structurely, designs ingeniously, easy to operate, quick, can be applied in the self-drilling type fixed bolt being fixed in the materials such as air entrained concrete piece or hollow brick.

Technical solution of the present utility model is: a kind of self-drilling type fixed bolt, comprise key 1 and the fixed tray 2 that is positioned at key 1 afterbody, it is characterized in that: on described key 1, be provided with hollow dilation 3, in key 1, be socketed with the anti-silk leading screw 4 that can relatively rotate with key 1 but cannot axial motion, the outer surface of anti-silk leading screw 4 is provided with reverse thread, the end that anti-silk leading screw 4 is positioned at key 1 outside is provided with drill hammer 5, is provided with the internal thread matching with anti-silk leading screw 4 on the inwall at key 1 near drill hammer 5 one end.

Compared with the existing technology, tool has the following advantages the utility model:

The self-drilling type fixed bolt of this kind of structural type, it is simple in structure, designs ingenious, rationally distributed.It needs comparatively loaded down with trivial details operating process ability complete operation in use for traditional EXPANSION ANCHOR BOLTS, and fastening hypodynamic defect while being applied in the materials such as air entrained concrete piece or hollow brick, design a kind of fixed bolt structure of special construction, it creatively utilizes outer surface to match with leading screw and the key of reverse thread, utilize the drill hammer that itself carries on the wall after perforate, only need to control the reversion of anti-silk leading screw, after making anti-silk leading screw and key intermeshing, a strength towards wall outer side is provided, allow the dilation expansion of key even tie a knot, thereby provide a stronger fastening force.And its installation process is relatively easy, only need whole key to squeeze into after body of wall, controlling electric drill reversion can complete, than traditional EXPANSION ANCHOR BOLTS, saved a large amount of manpower and materials, and its preparation process is simple, cheap for manufacturing cost, therefore can say that it has possessed multiple advantage, be particularly suitable for applying in the art, its market prospects are very wide.

Accompanying drawing explanation

Fig. 1 is the utility model embodiment's structural representation.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described.As shown in Figure 1: a kind of self-drilling type fixed bolt, comprise key 1 and the fixed tray 2 that is positioned at key 1 afterbody, on key 1, be provided with dilation 3, this dilation 3 is hollow-core construction, in it, be socketed with anti-silk leading screw 4, the outer surface of this anti-silk leading screw 4 is provided with reverse thread, and it can rotate with respect to key 1, but cannot be along the axial motion of key 1, end at anti-silk leading screw 4 is provided with the drill hammer 5 that is exposed to key 1 outside, is provided with the internal thread matching with anti-silk leading screw 4 on the inwall near drill hammer 5 one end on key 1.

The working procedure of the utility model embodiment's self-drilling type fixed bolt is as follows: first utilize electric tool that this kind of fixed bolt entirety is squeezed in the body of wall of the materials such as air entrained concrete piece, hollow brick, in the process of squeezing into body of wall, due to the 4 outer surface settings of anti-silk leading screw are reverse threads, and the anti-silk of now electric eastern instrument control leading screw 4 forwards, therefore anti-silk leading screw 4 is not meshed with the internal thread on key 1, anti-silk leading screw 4 dallies in the inner chamber of key 1, drill hammer 5 rotates, on body of wall, punch, the entirety of key 1 enters in body of wall;

The dilation 3 of key 1 enters behind body of wall inside, utilize the anti-silk of electric tool control leading screw 4 to reverse, now the internal thread on reverse thread and the key 1 of anti-silk leading screw 4 outer surfaces matches, because anti-silk leading screw 4 cannot moving axially along key 1, therefore key 1 can be subject to respect to anti-silk leading screw 4 strength of (towards the direction of wall outer side) backward, this strength can make dilation 3 deform, heave, even tie a knot, fixed bolt only needs once-through operation just can in body of wall, fix like this, and larger fastening force can be provided.

Claims

1. a self-drilling type fixed bolt, comprise key (1) and be positioned at the fixed tray (2) of key (1) afterbody, it is characterized in that: on described key (1), be provided with hollow dilation (3), in key (1), be socketed with and can relatively rotate with key (1), but anti-silk leading screw (4) that cannot axial motion, the outer surface of anti-silk leading screw (4) is provided with reverse thread, anti-silk leading screw (4) is positioned at the outside end of key (1) and is provided with drill hammer (5), on inwall at key (1) near drill hammer (5) one end, be provided with the internal thread matching with anti-silk leading screw (4).