CN2334933Y

CN2334933Y - Bidirection stretch multi-purpose expansion screw bolt

Info

Publication number: CN2334933Y
Application number: CN 96241755
Authority: CN
Inventors: 赵改宇
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-13
Filing date: 1996-11-13
Publication date: 1999-08-25
Anticipated expiration: 2006-11-13

Abstract

The utility model relates to a bidirectional stretch multi-purpose expansion screw bolt which is characterized in that an inner sleeve barrel with inner screw threads and an expanding opening is arranged between a center rod with an expanding head and an outer sleeve barrel, and the length of a polished rod position between the expanding head position of the center rod and the screw threads position is larger than that of the inner sleeve barrel; the diameter of the polished rod position is smaller than that of the screw threads position, and the end head of the screw threads position of the center rod is provided with a groove. The utility model has the advantages that an existing universal standard screw rods can be used as the center rod and rod heads need not to be provided with convenient decoration, and the utility model can replace all nuts and screw rods needed to be pre-buried and can replace long screw rods, embedded parts and expanding plugs, being suitable for the fixation and installation of electromechanical equipment and material devices in various occasions.

Description

Two-way extension multipurpose EXPANSION ANCHOR BOLTS

The utility model belongs to the fastening connection piece bolt, particularly a kind ofly can two-wayly prolong, reexpansion, is used for the multipurpose EXPANSION ANCHOR BOLTS of multiple occasion.

At present, commercially available standard EXPANSION ANCHOR BOLTS is made up of the band sleeve that the center-pole of head and band expand mouthful that expands, and when screwing nut and outwards stretch fastening center-pole, relies on and expands that schistostoma is opened and hole wall jam-packed all around, and fixed.This standard EXPANSION ANCHOR BOLTS when installing and using, has only single usability, comes with some shortcomings simultaneously,, is difficult to remedy as unsuccessful as once mounting, if expand failure, can't take out replacing; The center-pole limited length, it is short indefinite to expose the bar head length, can not be used for decorating installing; The screw socket that exposes the bar head is easily hindered, and should not do pre-buried installing and using; The center-pole length that can't extend more can't substitute with master screw.

The purpose of this utility model is to design and produce a kind of two-way extension multipurpose EXPANSION ANCHOR BOLTS, improvement center-pole structure, in the center-pole termination groove is set, reduces the polished rod diameter of center-pole, install tapped inner sleeve additional, to expand its multiple use, make forward mounting center bar, screw rod oppositely is installed is replaced center-pole, but the forward extension adds long bolt, oppositely extend and add long bolt, realize the forward reexpansion, reverse 2 expansions replace the embedded part multiple use.

Two-way extension multipurpose EXPANSION ANCHOR BOLTS of the present utility model, the center-pole (title center-pole), outer sleeve, pad, packing ring, the nut that comprise the bloated head of band, between the center-pole of being with bloated head and outer sleeve, be provided with the inner sleeve (title inner sleeve) of band internal thread and bloated mouth, the bloated head position of center-pole and the polished rod span access location length between the screw thread position are greater than the length of inner sleeve, the polished rod position diameter of center-pole is less than the diameter at screw thread position, and the termination, screw thread position of center-pole is provided with groove.Aforesaid two-way extension multipurpose EXPANSION ANCHOR BOLTS, the center-pole of the bloated head of its band can be master screw; 2 outer sleeves and 2 inner sleeves can be set simultaneously.

Using method of the present utility model is: forward is installed, and is identical with commercially available standard EXPANSION ANCHOR BOLTS, promptly relies on expand bloated mouthful of sleeve over the bloated crown of center-pole of head of band, realizes fixing.The center-pole of the bloated head of available band of the present utility model is applied mechanically commercially available outer sleeve, forms the identical using method of commercially available standard EXPANSION ANCHOR BOLTS.Oppositely installation adopts market to buy the long bolt identical with the inner sleeve screw thread, and the center-pole of the bloated head of replacement band oppositely screws in elder generation and is connected with inner sleeve, and is as the support of outer sleeve, promptly inflatable fastening.The forward extension adds long bolt, and the center-pole of the bloated head of band adopts commercially available standard long bolt, and diameter is less than the screw socket diameter of inner sleeve, two outer sleeves are set, two inner sleeves, fastening long bolt, inner sleeve can force the bloated mouthful distending of outer sleeve, realizes that forward extends the lengthening expansion.Oppositely extend and add long bolt, the center-pole of the bloated head of band adopts commercially available standard long bolt, diameter is same as the screw socket diameter of inner sleeve, two outer sleeves are set, two inner sleeves, fastening long bolt, the inner sleeve screw thread is threaded with long bolt, can force the bloated mouthful distending of outer sleeve, the reverse extension of realization extends and expands.The forward reexpansion, the center-pole of the bloated head of band puts inner sleeve, outer sleeve, pad, packing ring, nut, makes the screw thread of center-pole and being threaded of inner sleeve, uses the nut jam-packed, forces the bloated mouthful distending of outer sleeve, finishes expansion for the first time; If insufficient strength is utilized the groove of center-pole, clamp the center-pole derotation, make the screw thread of center-pole withdraw from the screw thread of inner sleeve, make the bloated head of center-pole push against inner sleeve, continue the derotation center-pole, carry out bloated mouthful of distending of inner sleeve, finish for the second time and expand, the realization reexpansion is fixed.Commercially available standard long bolt is adopted in reverse 2 expansions, is threaded with the place ahead inner sleeve, supports with two outer sleeves, utilizes inner sleeve with the bloated mouthful distending of the place ahead outer sleeve, realizes first expansion; Withdraw from the outer sleeve of long bolt and back, set up the rear inner sleeve, be threaded, put into the rear outer sleeve, utilize the rear inner sleeve, realize second expansion, screw long bolt, realize that expand fixing at reverse 2 the bloated mouthful distending of rear outer sleeve with long bolt.

The utility model has the advantages that: have commercially available now standard EXPANSION ANCHOR BOLTS same install and use function; Available commercially available universal standard screw rod directly substitutes any conversion of center-pole; Can change commercially available master screw length arbitrarily, can fastening all fastening pieces of positive and negative use; Can not reveal the bar head and install, be convenient to decorate; When needing to restore metope, can withdraw from center-pole; Can be without corner fittings, the direct fastening hollow material and the lumps of wood are in wall on the ground; Can carry on a shoulder pole without iron, directly the electroceramics post is installed on the wall; Can not establish hook and hang hot-water heating equipment; Do not establish the direct poling of carriage; On soft body of wall, can the forward reexpansion, improve anchor force; For heavy hanging piece, can reverse 2 expansions, improve bearing capacity; When eye was too small, available hand hammer bump was oppositely installed; It is unrestricted to revolve tool, and socket wrench also can screw in; Take off sleeve, center-pole, can be directly when the bolt use; Can replace pre-buried nut of all needs and screw rod; Can replace the existing expander roll in market, replace nailing, steel nail, screw, long bolt through walls, screw rod, bloated plug, standard EXPANSION ANCHOR BOLTS, embedded part.Be applicable to machinery, equipment, material, device fixing of multiple occasion or connect.

Below in conjunction with drawings and Examples, the utility model will be further described:

Fig. 1 is the organigram of the center-pole of bloated of the forward mounting strap of two-way extension multipurpose EXPANSION ANCHOR BOLTS

Fig. 2 is the organigram of the reverse installation screw rod of two-way extension multipurpose EXPANSION ANCHOR BOLTS

Fig. 3 is that the forward of two-way extension multipurpose EXPANSION ANCHOR BOLTS extends the organigram that adds long bolt

Fig. 4 is the organigram that the reverse extension of two-way extension multipurpose EXPANSION ANCHOR BOLTS adds long bolt

Fig. 5 is the organigram of the forward reexpansion of two-way extension multipurpose EXPANSION ANCHOR BOLTS

Fig. 6 is the organigram of reverse 2 expansions of two-way extension multipurpose EXPANSION ANCHOR BOLTS

As seen from Figure 1, two-way extension multipurpose EXPANSION ANCHOR BOLTS of the present utility model, the center-pole 1, outer sleeve 2, pad 3, packing ring 4, the nut 5 that comprise the bloated head of band, at the band inner sleeve 6 that the center-pole 1 of head and outer sleeve be provided with the band internal thread between long-pending and expand mouthful that expands, the bloated head position 7 of center-pole and polished rod position 8 length between the screw thread position are greater than the length of inner sleeve 6, the polished rod position diameter of center-pole is less than the diameter at screw thread position, and the termination, screw thread position of center-pole is provided with groove 9.The forward installation, promptly bloated 7 of the center-pole 1 of the bloated head of dependence band bloated mouth that backs down outer sleeve 2 realized fixing.

As seen from Figure 2, oppositely install, adopt the long bolt 10 identical, as center-pole with the inner sleeve screw thread, oppositely screw in elder generation and be connected with inner sleeve 6, as the support of outer sleeve 2, cover Upper gasket 3, packing ring 4, screw nut 5 again, it is fastening that 2 bloated mouthfuls of outer sleeves are expanded, and realizes oppositely installing.

As seen from Figure 3, the forward extension adds long bolt, and center-pole adopts commercially available standard long bolt 10, nut is established in the inner, diameter is provided with 2,2 ', two inner sleeves 6,6 ' of two outer sleeves less than the screw socket diameter of inner sleeve 6, establish a pad 3 ' between two outer sleeves, two inner sleeve directions are provided with on the contrary, and the long bolt termination is provided with pad 3, packing ring 4, nut 5, fastening long bolt 10, two inner sleeves 6,6 ' can force two outer sleeves 2,2 ' bloated mouthful of distending, realize that forward extends the lengthening expansion.

As seen from Figure 4, oppositely extension adds long bolt, and center-pole adopts commercially available standard long bolt 10, and diameter is same as the screw socket diameter of inner sleeve, two outer sleeves 2,2 ' are set, establish a pad 3 ' between opposite 6,6 ', two outer sleeves of inner sleeve that are provided with of both direction 2,2 ', long bolt 10 terminations are provided with pad 3, packing ring 4, fastening long bolt 10, the inner sleeve screw thread is threaded with long bolt, can force outer sleeve 2,2 ' bloated mouthful of distending, and the reverse extension of realization extends and expands.

As seen from Figure 5, the forward reexpansion, center-pole 1 puts inner sleeve 6, outer sleeve 2, pad 3, packing ring 4, nut 5, makes the screw thread of center-pole 1 and being threaded of inner sleeve 6, with nut 5 jam-packeds, forces outer sleeve 2 bloated mouthful distendings, finishes for the first time and expands; If insufficient strength, utilize the groove 9 of end, center-pole 1 screw thread position, clamp center-pole 1 derotation, make the screw thread of center-pole withdraw from the screw thread of inner sleeve 6, make bloated 7 of the inverted cone of center-pole push against inner sleeve, continue the derotation center-pole, carry out bloated mouthful of distending of inner sleeve, finish for the second time and expand, the reexpansion of realization forward is fixed.

As seen from Figure 6, commercially available standard long bolt 10 is adopted in reverse 2 expansions, diameter is same as the screw socket diameter of inner sleeve 6, and long bolt is threaded with the place ahead inner sleeve 6, two outer sleeves 2,2 ' is set supports, utilize the place ahead inner sleeve 6 with the place ahead outer sleeve 2 bloated mouthful distendings, realize first expansion; Withdraw from the outer sleeve 2 ' of long bolt 10 and back, set up rear inner sleeve 6 ', be threaded with long bolt, put into rear outer sleeve 2 ', utilize rear inner sleeve 6 ' with 2 ' bloated mouthful of distending of rear outer sleeve, realize second expansion, cover Upper gasket 3, packing ring 4, screw long bolt 10, realize that expand fixing at reverse 2.

Claims

1, a kind of two-way extension multipurpose EXPANSION ANCHOR BOLTS, the center-pole, outer sleeve, pad, packing ring, the nut that comprise the bloated head of band, it is characterized in that, between the center-pole of being with bloated head and outer sleeve, be provided with the inner sleeve of band internal thread and bloated mouth, the bloated head position of the center-pole of the bloated head of band and the polished rod span access location length between the screw thread position are greater than the length of the inner sleeve of the band internal thread and the mouth that expands, the polished rod position diameter of the center-pole of the bloated head of band is less than the diameter at screw thread position, and the termination, screw thread position of the center-pole of the bloated head of band is provided with groove.

2, two-way extension multipurpose EXPANSION ANCHOR BOLTS as claimed in claim 1 is characterized in that, the center-pole of the bloated head of band is a master screw, and is provided with the band internal thread between the outer sleeve and the inner sleeve of the mouth that expands.

3, two-way extension multipurpose EXPANSION ANCHOR BOLTS as claimed in claim 1 is characterized in that center-pole is a master screw, and the inner sleeve of 2 outer sleeves and 2 band internal threads and the mouth that expands is set outward.