CN201184344Y

CN201184344Y - Nut expansion shell bolt and expansion screw bolt

Info

Publication number: CN201184344Y
Application number: CNU2008200185506U
Authority: CN
Inventors: 徐灿清
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-04
Filing date: 2008-03-04
Publication date: 2009-01-21
Anticipated expiration: 2018-03-04

Abstract

The utility model discloses a nut expansion sleeve anchor and an expansion bolt. The nut expansion sleeve anchor comprises an anchor body or a bolt body, a fastening nut and an expansion sleeve, wherein screw threads are processed at one end of the anchor body or the bolt body. The nut expansion sleeve anchor is characterized in that a square head is processed at the other end of the anchor body or the bolt body; the fastening nut is a conical nut; and the opening slit end of the expansion sleeve is matched with the conical surface of the conical nut. One end of the nut expansion sleeve anchor with the screw threads is embedded in the bottom of the hole, and the square head is exposed outside the hole, thereby not influencing the section use in roadway, not influencing the appearance of the wall surface, obviating manual sawing, and saving labor and effort. The nut with a certain length can be screwed tightly more and more to prevent loosening and achieve high anchoring force.

Description

Nut expansion sleeve bolt and EXPANSION ANCHOR BOLTS

Technical field

The utility model relates to anchoring piece, relates in particular to mining anchor pole and daily EXPANSION ANCHOR BOLTS.

Background technique

Existing mining metal anchor pole, its anchorage style is varied, and the formula of falling the contract, resin anchoring formula, bloated shell-type are arranged.Relevant with the application is the shell-type that expands, and comprises anchor bar body, tightening nut and bloated shell, and an end of anchor bar body is processed into the thick head of the conical surface, and the other end is for being processed with screw thread; End with the thick head of anchor bar body during use injects in the boring, will expand valve jacket again at the bottom of pushing the hole with stock on the anchor bar body, and the shell distending that will expand when nutting is outwards pulled out anchor pole is fixed in the boring anchor bar body.Its deficiency is that anchor bar body needs to pull out a segment length outside the hole just can make the shell distending that expands, thereby very long anchor pole head is exposed at outside the hole, influence the use section of coal mine roadway, and anchoring is not firm.

Traditional expansion bolt is identical with the structural principle of above-mentioned expansion sleeve bolt, comprise the body of bolt, bloated shell and tightening nut, fixation method is also identical, therefore there is above-mentioned deficiency too, when on body of wall or on the floor during mounting article, bolt head is exposed very long one section, and the head that people have to be exposed amputates, and wastes time and energy.

Summary of the invention

The utility model is the above-mentioned deficiency that overcomes existing expansion sleeve bolt and EXPANSION ANCHOR BOLTS, proposes the EXPANSION ANCHOR BOLTS of the anchor pole and the bloated shell-type of nut of the bloated shell-type of a kind of nut.

A kind of nut expansion sleeve bolt, it comprises anchor bar body, tightening nut and bloated shell, an end of anchor bar body is processed with screw thread, it is characterized in that, the other end of anchor bar body is processed with square toes, and tightening nut is a conic nut, and the open seam end of the shell that expands matches with the conical surface of conic nut.

The bloated shell of top tray overlaps successively from the threaded end of anchor bar body in elder generation during use, the conic nut of screwing on again, the conical surface of conic nut is towards bloated shell, one end of conic nut is injected boring, to expand again and lean on the upper cap nut conical surface at the bottom of shell pushes the hole with stock, rotate square toes at hole external application spanner, conic nut is drawn in bloated shell, thereby anchor pole is fixed in the boring.

At the bottom of making the shell that expands enter the hole smoothly, can screw on earlier one before cover expands shell stops nut, makes the shell that expands be fixed on the anchor bar body afterbody earlier, and the shell that directly will expand pushes at the bottom of the hole.

A kind of nut shell-type EXPANSION ANCHOR BOLTS that expands, it comprises the body of bolt, tightening nut and bloated shell, an end of the body of bolt is processed with screw thread, it is characterized in that, the other end of the body of bolt is processed with square toes, and tightening nut is a conic nut, and the open seam end of the shell that expands matches with the conical surface of conic nut.

During use bolt is injected in the fixed hole of the object that is fixed earlier, put the shell that the expands conic nut of screwing on again, the conical surface of conic nut will have an insertion porthole of conic nut towards bloated shell.The external application spanner turns square toes in the hole, and conic nut is drawn in the shell that expands, and draws tighter and tighter, plays the effect of mounting article.

Good effect of the present utility model is: a threaded end is imbedded at the bottom of the hole, only exposes square toes outside the hole, does not influence the tunnel and uses section, does not influence the attractive in appearance of metope, need not manually amputate again, saves labor.And nut has certain length, and is stubborn more tight more, prevents to become flexible, and anchor force is strong.

Description of drawings

Plan view when Fig. 1 is the utility model nut expansion sleeve bolt and EXPANSION ANCHOR BOLTS use because both structures are the same, only is that length is different, so only represent with Fig. 1.

Marginal data: 1-square toes; The 2-anchor pole pallet or the object that is fixed; The 3-anchor bar body or the body of bolt; The 4-shell that expands; The 5-conic nut; 6-stops nut.

Embodiment

Below in conjunction with Fig. 1 structure of the present utility model is described in detail.

As shown in Figure 1, nut expansion type roof bolt of the present utility model comprises that anchor bar body 3, an end face are the conic nut 5 and the bloated shell 4 of the conical surface, one end of anchor bar body 3 is processed with the screw thread that matches with conic nut 5, the other end of anchor bar body 4 is processed with square toes 1, and the open seam end of the shell that expands matches with the conical surface of conic nut 5.During use, threaded end from anchor bar body 3 puts anchor pole pallet 2 successively earlier, shell 4 expands, the conic nut 5 of screwing on again, the conical surface of conic nut 5 is towards bloated shell 4, one end of conic nut 5 is injected boring, and the shell 4 usefulness stocks that will expand again push at the bottom of the hole by the conical surface of last conic nut 5, rotate square toes 1 at hole external application spanner, conic nut 5 is drawn in the shell 4 that expands, thereby anchor bar body 3 is fixed in the boring.At the bottom of making the shell 4 that expands enter the hole smoothly, screwing on earlier one before cover expands shell 4 stops nut 6, makes the shell 4 that expands be fixed on anchor bar body 3 afterbodys earlier, and the shell 4 that directly will expand pushes at the bottom of the hole.

Nut of the present utility model expands the shell-type EXPANSION ANCHOR BOLTS as shown in Figure 1, comprise that the body of bolt 3, an end face are the conic nut 5 and the bloated shell 4 of the conical surface, one end of the body of bolt 3 is processed with the screw thread that matches with conic nut 5,1 of the other end side of being processed with of the body of bolt 3, the open seam end of the shell 4 that expands matches with the conical surface of conic nut 5.Earlier the body of bolt 3 is injected in the fixed hole of the object 2 that is fixed during use, put the shell 4 that the expands conic nut 5 of screwing on again, the conical surface of conic nut 5 will have an insertion porthole of conic nut 5 towards bloated shell 4.The external application spanner turns square toes 1 in the hole, and conic nut 5 is drawn in 4 li on bloated shell, draws tighter and tighter, plays the effect of mounting article.

Claims

1, a kind of nut expansion sleeve bolt, it comprises anchor bar body, tightening nut and bloated shell, an end of anchor bar body is processed with screw thread, it is characterized in that, the other end of anchor bar body is processed with square toes, and tightening nut is a conic nut, and the open seam end of the shell that expands matches with the conical surface of conic nut.

2, nut expansion sleeve bolt as claimed in claim 1 is characterized in that, it comprises that also stops a nut.

3, the bloated shell-type EXPANSION ANCHOR BOLTS of a kind of nut, it comprises the body of bolt, tightening nut and bloated shell, an end of the body of bolt is processed with screw thread, it is characterized in that, the other end of the body of bolt is processed with square toes, and tightening nut is a conic nut, and the open seam end of the shell that expands matches with the conical surface of conic nut.