CN2045442U

CN2045442U - Expanding bolt

Info

Publication number: CN2045442U
Application number: CN 89211251
Authority: CN
Inventors: 屠介津
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-27
Filing date: 1989-03-27
Publication date: 1989-10-04

Abstract

The utility model discloses an expanding bolt which belongs to the engineering element of the fixing use. The expanding bolt is used for fixing and installing the object in the previous drill holes of the wall, ground and other places of the building engineering. The expanding bolt comprises an expanding sleeve, a tube shape cone wedge, a flat washer, a spring washer and a standard hexagon head bolt. The hexagon head bolt passes through the spring washer, the flat washer, the tube shape cone wedge and the expanding sleeve in turn; the hexagon head bolt is connected with the thread of the expanding sleeve. The expanding lobe of the expanding sleeve expands to the outside of the hole. The utility model can be used times without number and can be provided with the object of any thickness, and the flattening appearance can be realized after the object is installed. When the utility model is used for outdoor place, the part of the expanding bolt suffering from the rain is not easily rusted, the thread is not easily knocked and damaged, and the easy dismounting is realized. The utility model has the advantages of convenient installation, simple structure and safe utilization.

Description

Expanding bolt

The utility model relates to a kind of EXPANSION ANCHOR BOLTS, belongs to the fixedly engineering element of usefulness, it can be anchored on for this reason in the ground hole made or the wall hole in order to object to be installed.

EXPANSION ANCHOR BOLTS has advantages such as installation period is short, and working procedure is simple, easy for installation.

China patent of invention publication number GK88101029 discloses a kind of like this EXPANSION ANCHOR BOLTS.This EXPANSION ANCHOR BOLTS is made up of institutes such as expansion set, bolt, annular spring spares, skids off and destroys grappling in order to prevent that expansion set from may move axially to cause, and establishes and puts an annular spring spare.Expanding petal on the expansion set expands in the hole.But this EXPANSION ANCHOR BOLTS is difficult to whole taking-ups after using, and can only use once promptly discarded voluntarily; The thickness of installed object is limit by bolt length and has been limited using scope; After object was installed, the partly outstanding object of screw thread influenced using and installing of some object, and in outdoor application because of drenching with rain, the screw thread easy-to-rust consequently is difficult to dismantle installed object; Bolt thread partly exposes the damaged of very easily colliding with.

The purpose of this utility model is, avoid the above-mentioned deficiency of prior art and a kind of improved EXPANSION ANCHOR BOLTS is provided, it has can repeated multiple times uses, is not subjected to the installed object thickness limits, and the external sight of installation material is more smooth, be difficult for the gouge screw thread, the screw thread that drenched with rain is difficult for that corrosion is convenient to dismantle from now on, performance such as easy for installation, simple in structure and safe and reliable.

The utility model is realized by following technical proposal.

Basic structure pattern of the present utility model is made up of an expansion set, a tubular awl wedge, a plain washer, a spring washer and a hexagon head bolt.Some zigzag fashion anti-slip tanks are arranged on the expansion set right-hand member excircle, and there are four uniform axial vertical masonry joints at expansion set right-hand member to middle part, constitutes four expanding petals, and left end has internal thread.Tubular awl wedge one end is cylindrical, and the other end is the circular cone wedge shape.The external diameter of expansion set is identical with the external diameter of tubular awl wedge.The cylinder of tubular awl wedge right-hand member partly length is to make expansion set be fastened on the reliable degree of depth of ground hole or wall hole.Expansion set and tubular awl wedge are made of metal.Plain washer, spring washer and hexagon head bolt are market and easily purchase standard piece.Can choose the hexagon head bolt of different length wantonly according to the difference of material installed body thickness.Spring washer is as preventing to be vibrated the loosening of back grappling.

Above-mentioned EXPANSION ANCHOR BOLTS working principle is as follows:

The boring that is prepared in advance and needs the wall of installation object or ground etc. to locate, hole depth is slightly less than the length sum (chip is removed in the boring back) that expansion set adds tubular awl wedge, and expansion set and tubular awl wedge are successively put into the hole.The expanding petal of expansion set must be put into outside the hole, so that knock tubular awl wedge wedging expansion set, forms reverse expansion, reaches tentatively fastening with ground hole or cinclides.Hexagon head bolt passes spring washer, plain washer, installed object, tubular awl wedge and expansion set successively and connects with the expansion set internal thread.Push tubular awl wedge when being wrenched bolt, expansion set is under the effect of screw thread power, along the inclined-plane continuation radial expansion of tubular awl wedge, until fastening fully with ground hole or cinclides.

Compared with the prior art the utility model has the following advantages.

The utility model is after taking off hexagon head bolt, spring washer, plain washer and material installed successively, stretching into tubular awl wedge endoporus with rod member shakes, this tubular awl wedge can take out, the expansion set that has expanded is plastic shrinkage voluntarily, screw in the expansion set internal thread with hexagon head bolt and take out expansion set, can repeatedly use.The utility model can be selected the hexagon head bolt standard piece of different length for use, so that the object of different-thickness is installed, does not need specially, selects for use very convenient.The object that any thickness is installed all has only head, spring washer and the plain washer of hexagon head bolt to expose the object outside, promptly there is not long threaded stem to stretch out, outward appearance is more smooth, rainwater makes the corrosion of expansion set internal thread at the bottom of also being difficult for entering the hole, and bolt thread do not expose and is difficult for the damaged of colliding with, and helps dismantling from now on.The utility model is reverse expansion, forms a barb, and grappling is fastening, uses more safe and reliable.

The explanation of accompanying drawing drawing:

Fig. 1, the utility model sectional view.

The utility model describes in detail embodiment below with reference to accompanying drawing.

EXPANSION ANCHOR BOLTS shown in Figure 1 comprises an expansion set (1), a tubular awl wedge (2), a plain washer (3), a spring washer (4) and a hexagon head bolt (5).

On expansion set in the EXPANSION ANCHOR BOLTS (1) the right-hand member excircle some zigzag fashion anti-slip tanks are arranged, there are four uniform axial expansion seams at its right-hand member to middle part, forms expanding petal, and its left end has internal thread.Tubular awl wedge (2) one ends are cylindrical, and the other end is the circular cone wedge shape.The microcephaly of tubular awl wedge (2) inserts in expansion set (1) hole.Hexagon head bolt (5) passes spring washer (4), plain washer (3), tubular awl wedge (2) and expansion set (1) and connects with the internal thread of expansion set (1) left end.

Claims

1, EXPANSION ANCHOR BOLTS has expansion set (1), plain washer (3), spring washer (4) and bolt (5), it is characterized in that:

A) bolt (5) passes spring washer (4), plain washer (3), tubular awl wedge (2) and expansion set (1) successively and connects with the internal thread of expansion set (1);

B) tubular awl wedge (2) one ends are cylindrical, and its other end is the circular cone wedge shape;

C) expansion set (1) has internal thread, the reverse expansion outside the hole of the expanding petal of expansion set (1).