CN2323185Y

CN2323185Y - Internal expansion type expansion bolt

Info

Publication number: CN2323185Y
Application number: CN 96241019
Authority: CN
Inventors: 曾明海
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-14
Filing date: 1996-10-14
Publication date: 1999-06-09
Anticipated expiration: 2006-10-14

Abstract

The utility model relates to an internal expansion type expansion bolt which is composed of a bolt, a hook, an expanding cone and expanding sleeves, wherein one end of the bolt is provided with the hook, and the connection part of the bolt and the hook forms the shape of a circular table; the expanding sleeves are a front and a back expanding sleeves, the front expanding sleeve is sheathed on the bolt, the back expanding sleeve is connected with the bolt through screw threads, and the back end of the back expanding sleeve is quadrangled; the expanding cone which is in the shape of a funnel is arranged in the back expanding sleeve, internal screw threads are formed in the expanding cone and are connected with the screw threads of the front end of the bolt, and the back expanding sleeve contacts the inclined plane of the expanding cone. The utility model has the advantages that the hook and the bolt are integrated, and installation is convenient; at the same time, the utility model adopts inward dual-expansion fixation to enable the hook to be firm.

Description

The internal-expansion type EXPANSION ANCHOR BOLTS

The utility model relates to a kind of bolt, particularly a kind of internal-expansion type EXPANSION ANCHOR BOLTS that is used for the support weight.

At present, the method that various pipelines of rest and radiator are commonly used has two kinds: a kind of is first stent preform, burrows on the wall then, imbeds the support penetration concrete, treats can use after the concrete setting; Another kind method is with the direct fixed support of common EXPANSION ANCHOR BOLTS.Their deficiency is: need stent preform, so the engineering time is long, installation is complicated, uses common EXPANSION ANCHOR BOLTS also to exist bolt and exposes, and influences attractive in appearance.

The purpose of this utility model is to overcome the shortcoming of prior art, and provide a kind of and will support and be fixed as one, and easy-to-install internal-expansion type EXPANSION ANCHOR BOLTS.

The purpose of this utility model is achieved in that the internal-expansion type EXPANSION ANCHOR BOLTS is made up of bolt, preceding expansion set, the awl that expands, back expansion set, bolt one end is for there being externally threaded bolt, the other end is a suspension hook, frustoconic shape is processed in the attachment portion of bolt and suspension hook, be with preceding expansion set on the bolt, the end that preceding expansion set contacts with the round platform inclined-plane has notch, what be connected with the bolt front end is that inside is provided with internal thread, shape such as funnel shaped bloated awl, the back expansion set that is connected with bolt thread between expand awl and preceding expansion set, back expansion set is bored the end that the inclined-plane contacts and is also had notch with bloated with ining addition.

Advantage of the present utility model is that suspension hook and bolt are integrated, and simple installation adopts introversive two the expansion to fix simultaneously, makes suspension hook more firm, attractive in appearance, has also saved materials such as steel and slush.

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1: internal-expansion type EXPANSION ANCHOR BOLTS structural representation;

Fig. 2: back expansion set unfolded drawing.

Among the figure: the 1-suspension hook, expansion set before the 2-bolt, 3-, 4-expand and bore expansion set behind the 5-.

The utility model internal-expansion type EXPANSION ANCHOR BOLTS is by bolt 2, forward and backward expansion set 3,5, the awl 4 that expands are formed, end as Fig. 1 bolt 2 is a suspension hook 1, bolt 2 is a frustoconic shape with the attachment portion of suspension hook 1, preceding expansion set 3 is enclosed within on the bolt 2, and the end that it contacts with the round platform inclined-plane has notch, and back expansion set 5 is connected with bolt 2 by screw thread, for preventing that back expansion set 5 from rotating with bolt 2, quadrilateral (as shown in Figure 2) is processed in the rear end of back expansion set; Have an inside to be processed with internal screw thread form such as funnel shaped bloated awl 4 in the back in the expansion set 5, the awl 4 of expanding is threaded with bolt 2 front ends, and back expansion set 5 is bored the end that 4 inclined-planes contact and also had notch with bloated.

During use, bore a diameter on the wall and be a bit larger tham the hole of expansion set diameter afterwards, bolt is squeezed in the hole, rotated suspension hook 1, bolt 2 drives the awl 4 inside precessions of expanding, at this moment, for preventing that the back expansion set from rotating with bolt, quadrilateral is processed in back expansion set rear end, along with the precession of bolt, the end that forward and backward two expansion sets 3,5 have notch stretches and distending along the round platform surface, thereby realizes two fixedly suspension hooks that expand.The utility model also can change the form of hook, holds in the palm the object of other different shape.

Claims

1. an internal-expansion type EXPANSION ANCHOR BOLTS is made up of bolt, suspension hook, bloated awl and expansion set, and an end that it is characterized in that bolt (2) is suspension hook (1), and bolt (2) is a frustoconic shape with the attachment portion of suspension hook (1); Expansion set has forward and backward expansion set (3), (5), and preceding expansion set (3) is enclosed within on the bolt (2), and the end that preceding expansion set (3) contacts with the round platform inclined-plane has notch, and back expansion set (5) is connected with bolt (2) by screw thread, and the rear end of back expansion set (5) is a quadrilateral; In back expansion set (5) shape such as funnel shaped bloated awl (4) are arranged, there is internal thread awl (4) inside of expanding, and it is threaded with bolt (2) front end, and back expansion set (5) also has notch with the end that the inclined-plane of the awl (4) that expands contacts.