CN203868069U

CN203868069U - Expansion bolt

Info

Publication number: CN203868069U
Application number: CN201420123838.5U
Authority: CN
Inventors: 周联宇
Original assignee: JINHAI HEAVY INDUSTRY Co Ltd
Current assignee: JINHAI HEAVY INDUSTRY Co Ltd
Priority date: 2014-03-18
Filing date: 2014-03-18
Publication date: 2014-10-08
Anticipated expiration: 2024-03-18

Abstract

The utility model discloses an expansion bolt which comprises a countersunk bolt body, an expansion tube, a gasket and a nut. A first groove and a second groove are formed in the side wall of the expansion tube in the axis direction of the expansion tube and are formed in a spaced mode, the open end of the first groove is located at the open end, close to the nut, of the expansion tube, and the open end of the second groove is located at the open end, away from the nut, of the expansion tube. According to the technical scheme, the first groove and the second groove are opposite in open direction, both the portions, in the first groove and the second groove, of the expansion tube can expand, and compared with an expansion bolt with single-direction grooves, the expansion size of the expansion bolt can be increased; in the use process, the expansion size of the expansion bolt is increased when the nut is screwed in the screwing direction, the expansion size of the expansion bolt is decreased when the nut is unscrewed in the opposite direction, and therefore adjustment of the expansion size of the expansion bolt is achieved, the application range of the expansion bolt is enlarged, and use universality of the expansion bolt is improved.

Description

A kind of EXPANSION ANCHOR BOLTS

Technical field

The utility model relates to shipbuilding technical field, particularly a kind of EXPANSION ANCHOR BOLTS.

Background technique

In the process of shipbuilding, main shaft system connection generally adopts flange to connect, and in the process that main shaft system connects, flange connect need to be used hinged bolts, and hinged bolts and bolt hole interference quota, by installing after liquid nitrogen cold-shrinkage hinged bolts.In the process of processing bolt hole and cold charge hinged bolts, in order to guarantee that two axles are the concentricity of flange bolt hole, need to use EXPANSION ANCHOR BOLTS, EXPANSION ANCHOR BOLTS provides expansionary force to realize the alignment that two axles are flange bolt hole.In use, dilation dimension is effective for EXPANSION ANCHOR BOLTS of the prior art, and the applicable pore diameter range of a kind of EXPANSION ANCHOR BOLTS of diameter is very little, and different blunt EXPANSION ANCHOR BOLTS need to be set according to different apertures, causes the versatility of EXPANSION ANCHOR BOLTS poor.

Therefore, how to improve the versatility that EXPANSION ANCHOR BOLTS is used, become those skilled in the art's technical problem urgently to be resolved hurrily.

Model utility content

In view of this, the utility model provides a kind of EXPANSION ANCHOR BOLTS, the versatility of using to improve EXPANSION ANCHOR BOLTS.

For achieving the above object, the utility model provides following technological scheme:

A kind of EXPANSION ANCHOR BOLTS, comprise: countersunk screw, expand tube, packing ring and nut form, on the sidewall of described expand tube, along the axial direction of described expand tube, offer the first and second grooves, described the first groove and the alternate layout of described the second groove, the opening end of described the first groove is positioned at described expand tube near the opening end of described nut, and the opening end of described the second groove is positioned at described expand tube away from the opening end of described nut.

Preferably, in above-mentioned EXPANSION ANCHOR BOLTS, the clearing end of described the first groove and described the second groove is circular port.

Preferably, in above-mentioned EXPANSION ANCHOR BOLTS, the number of described the first groove and described the second groove is 4.

Preferably, in above-mentioned EXPANSION ANCHOR BOLTS, described the first groove and described the second groove are long strip groove, and the length of described the first groove and described the second groove is at least 2/3rds of described expand tube length.

From technique scheme, can find out, the EXPANSION ANCHOR BOLTS that the utility model provides, comprise countersunk screw, be set in the expand tube outside countersunk screw, the nut coordinating with countersunk screw and be arranged on nut and expand tube between packing ring, the EXPANSION ANCHOR BOLTS that this programme provides offers along the axial direction setting of expand tube and the first groove of alternate layout and the second groove on the sidewall of expand tube, the opening end of the first groove is positioned at expand tube near the opening end of nut, the opening end of the second groove is positioned at expand tube away from the opening end of nut, the first groove is contrary with the opening direction of the second groove, expand tube between the first groove and the second groove is all inflatable, EXPANSION ANCHOR BOLTS with respect to single direction fluting, can expand the dilation dimension of EXPANSION ANCHOR BOLTS, in use, to tighten direction fastening nut time, it is large that the dilation dimension of EXPANSION ANCHOR BOLTS becomes, while unscrewing nut to opposite direction, the dilation dimension of EXPANSION ANCHOR BOLTS diminishes, realized the adjusting of EXPANSION ANCHOR BOLTS dilation dimension, increased the Applicable scope of EXPANSION ANCHOR BOLTS, improved the versatility that EXPANSION ANCHOR BOLTS is used.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The structural representation when EXPANSION ANCHOR BOLTS that Fig. 1 provides for the utility model embodiment is used;

The structural representation of the EXPANSION ANCHOR BOLTS that Fig. 2 provides for the utility model embodiment;

The structural representation of the expand tube that Fig. 3 provides for the utility model embodiment.

1, countersunk screw 2, expand tube 3, packing ring 4, nut 5, the first groove 6, the second groove.

Embodiment

The utility model discloses a kind of EXPANSION ANCHOR BOLTS, the versatility of using to improve EXPANSION ANCHOR BOLTS.

Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiments.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1-Fig. 3, the structural representation when EXPANSION ANCHOR BOLTS that Fig. 1 provides for the utility model embodiment is used; The structural representation of the EXPANSION ANCHOR BOLTS that Fig. 2 provides for the utility model embodiment; The structural representation of the expand tube that Fig. 3 provides for the utility model embodiment.

A kind of EXPANSION ANCHOR BOLTS, comprise: countersunk screw 1, expand tube 2, packing ring 3 and nut 4 form, on the sidewall of expand tube 2, along the axial direction of expand tube 2, offer the first groove 5 and the second groove 6, the first groove 5 and the alternate layout of the second groove 6, the opening end of the first groove 5 is positioned at expand tube 2 near the opening end of nut 4, and the opening end of the second groove 6 is positioned at expand tube 2 away from the opening end of nut 4.

The EXPANSION ANCHOR BOLTS that this programme provides, opening end at expand tube 2 near nut 4 is provided with along the first groove 5 of the axis setting of expand tube 2, opening end at expand tube 2 away from nut 4 is provided with along the second groove 6 of the axis setting of expand tube 2, two opening ends that are expand tube 2 are provided with groove, in the process of using, all can expand in the two ends of expand tube 2, with respect to the EXPANSION ANCHOR BOLTS of one-sided opening or the EXPANSION ANCHOR BOLTS of intermediate openings, it is large that swell diameter becomes, go for the hole of more different-diameters, increase the Applicable scope of EXPANSION ANCHOR BOLTS, improved the versatility of EXPANSION ANCHOR BOLTS.In this programme, while turning nut towards the direction of tightening EXPANSION ANCHOR BOLTS, it is large that the swell diameter of expand tube 2 becomes, while turning expanding nut towards contrary direction, the swell diameter of expand tube 2 diminishes, can bidirectional modulation, be not only applicable to the more hole of multi-aperture, facilitated the dismounting of EXPANSION ANCHOR BOLTS simultaneously, EXPANSION ANCHOR BOLTS can repeatedly be used, EXPANSION ANCHOR BOLTS of the prior art generally can only be used once, the cost of production that can nonexpondable EXPANSION ANCHOR BOLTS reduces to a certain extent EXPANSION ANCHOR BOLTS, reduce the waste of material, simultaneously with respect to the EXPANSION ANCHOR BOLTS at a port fluting, weakened the generation of in use plastic deformation situation of expand tube.During work, EXPANSION ANCHOR BOLTS is placed in to need two axles of centering be in flange bolt hole, now EXPANSION ANCHOR BOLTS is not in swelling state, rotating nut 4, pulling countersunk screw 1, there are relative movement, expand tube 2 expanses with expand tube 2 in taper countersunk screw 1, when the expanse of expand tube 2 reaches the internal diameter size that two axles are flange bolt hole, two axles are that flange bolt hole centering completes.The expansion sleeve providing in this programme, has easy installation and removal, location reliable accurately and be difficult for the advantages such as plastic deformation.

In order further to reduce the in use damage to expand tube 2, the clearing end of the first groove 5 and the second groove 6 is circular port, and circular port can reduce EXPANSION ANCHOR BOLTS stress concentration phenomenon in use, the working life of having improved EXPANSION ANCHOR BOLTS.

In order further to optimize technique scheme, in a specific embodiment of the present utility model, the number of preferred the first groove 5 and the second groove 6 is 4, the number of certain the first groove 5 and the second groove 6 can design according to the size of concrete EXPANSION ANCHOR BOLTS, take and guarantees that the working strength of EXPANSION ANCHOR BOLTS is prerequisite.

In order further to optimize technique scheme, in a specific embodiment of the present utility model, the first groove 5 and the second groove 6 are long strip groove, the length of the first groove 5 and the second groove 6 is at least 2/3rds of expand tube 2 length, overlapping at the first groove 5 and the second groove 6, expand tube 2 can be realized maximum expansion, realizes good fixation.

Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To these embodiments' multiple modification, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. an EXPANSION ANCHOR BOLTS, comprise: countersunk screw (1), expand tube (2), packing ring (3) and nut (4) form, it is characterized in that, on the sidewall of described expand tube (2), along the axial direction of described expand tube (2), offer the first groove (5) and the second groove (6), described the first groove (5) and the alternate layout of described the second groove (6), the opening end of described the first groove (5) is positioned at described expand tube (2) near the opening end of described nut (4), and the opening end of described the second groove (6) is positioned at described expand tube (2) away from the opening end of described nut (4).

2. EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that, described the first groove (5) is circular port with the clearing end of described the second groove (6).

3. EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that, described the first groove (5) is 4 with the number of described the second groove (6).

4. EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that, described the first groove (5) is long strip groove with described the second groove (6), and described the first groove (5) is at least 2/3rds of described expand tube (2) length with the length of described the second groove (6).