CN104712630A - Demountable expansion bolt and use method thereof - Google Patents

Demountable expansion bolt and use method thereof Download PDF

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Publication number
CN104712630A
CN104712630A CN201510092673.9A CN201510092673A CN104712630A CN 104712630 A CN104712630 A CN 104712630A CN 201510092673 A CN201510092673 A CN 201510092673A CN 104712630 A CN104712630 A CN 104712630A
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CN
China
Prior art keywords
nut
sleeve pipe
screw rod
diameter
screw
Prior art date
Application number
CN201510092673.9A
Other languages
Chinese (zh)
Inventor
郭保林
单川
韩瑜
孙宗光
赵慧
姜亚丽
Original Assignee
青岛林川工程技术咨询有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛林川工程技术咨询有限公司 filed Critical 青岛林川工程技术咨询有限公司
Priority to CN201510092673.9A priority Critical patent/CN104712630A/en
Publication of CN104712630A publication Critical patent/CN104712630A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B13/00Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/06Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
    • F16B13/063Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
    • F16B13/066Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like

Abstract

The invention provides a demountable expansion bolt and a use method of the demountable expansion bolt. The problem that a common expansion bolt is not easy to demount is solved. The demountable expansion bolt comprises a screw rod, an outer nut, an inner nut and a casing pipe. Two threads in different directions are carved at the two ends of the screw rod respectively, and the lengths of the threads are determined as the standard that expansion of the casing pipe is facilitated. The inner nut and the outer nut achieve position moving through the threads of the screw rod, the outer nut is a common hexagon nut, the inner nut is in a hollow circular truncated cone shape and is provided with a protruding edge along the outer edge, the diameter of the smaller end face of the inner nut is slightly smaller than the inner diameter of the bottom of an opening of the casing pipe, and the diameter of the larger end face of the inner nut is equal to the outer diameter of the casing pipe. The inner diameter of the casing pipe is slightly larger than the outer diameter of the screw rod, shallow notches are symmetrically formed in the positions, close to the peripheral edge of the end edge of the outer nut, of the casing pipe, a plurality of notches are symmetrically formed in the other end of the casing pipe, and meshing with a protruding edge during expansion is convenient. The demountable expansion bolt can be demounted, convenient conditions are provided for blocking of a bolt hole, the repairing effect is improved, the demountable expansion bolt can be repeatedly used, and waste is reduced.

Description

A kind of detachable EXPANSION ANCHOR BOLTS and using method thereof

Technical field

The invention belongs to construction and installation component technology field, be applicable to only need temporary fixed something and finally will restore to the original state, especially under water or the template of concrete structure reinstatement works or the temporary fixed of support under tide environment, particularly a kind of detachable EXPANSION ANCHOR BOLTS and assembly and disassembly methods thereof.

Background technique

Conventional EXPANSION ANCHOR BOLTS utilizes end wedge configuration, and by the relative movement of screw rod and sleeve pipe, wedge shape struts sleeve bottom, realizes sleeve pipe and contacts with the effective of structure hole wall, thus provides the anti-pulling ability of screw rod.But because sleeve pipe is squeezed end gross distortion, cannot normally take out, and the minimum circumscribed circle diameter of screw rod end wedge shape is greater than the inner diameter not being out of shape anterior cannula, just because of sleeve pipe cannot take out, directly causes screw rod also cannot take out.In the past when repairing under water or have the concrete structure of tidal effect surperficial, need in its surperficial temporary fixed template, employing EXPANSION ANCHOR BOLTS is fixedly the method for the most frequently used also most convenient, and the consumption of EXPANSION ANCHOR BOLTS is more, but the EXPANSION ANCHOR BOLTS of routine can not be removed after a procedure, mostly cut off along structure surface.Gap between screw rod and sleeve pipe is very little and cannot effectively shutoff, and screw rod and sleeve pipe and the gap between sleeve pipe and hole wall are that corrosive medium provides the passage entering structure inside, thus cause the problem of inside configuration corrosion of steel bar.

Since EXPANSION ANCHOR BOLTS is the most frequently used, the most easy method of temporary fixed object, that is just necessary that exploitation one can be removed after a procedure smoothly very much, and can reusable EXPANSION ANCHOR BOLTS, to make up defect that existing EXPANSION ANCHOR BOLTS cannot take out and to cut the waste.

Summary of the invention

The object of the invention is to there are the problems referred to above for existing technology, propose a kind of variable cross section end replacing conventional EXPANSION ANCHOR BOLTS with removable truncated cone shape end, and fin and the notch of coupling use are set respectively at frustum cone side and cannula tip, set up outer nut and gap and circular hole are set on sleeve pipe.

Object of the present invention realizes by following technical proposal: a kind of detachable EXPANSION ANCHOR BOLTS, comprises screw rod, outer nut, inner nut, sleeve pipe.Described screw rod is shaft-like, and two sections of contrary screw threads of direction are carved with at two ends; Inner nut and outer nut realize position by screw flight and move, outer nut is conventional hexagonal nut, inner nut is hollow round table shape, fin is provided with along outward edge, inner nut be slightly less than inner diameter bottom ferrule openings compared with small end face diameter, sleeve pipe inner diameter is slightly larger than shaft outer diameter, described sleeve pipe is peripherally symmetrical arranged shallow gap near outer nut end, the sleeve pipe the other end is uniform is symmetrical arranged some notches, when being convenient to screw rod and inner nut relative movement, sleeve bottom opens and hole wall close contact, possesses the bearing capacity of conventional EXPANSION ANCHOR BOLTS.

Two sections of reverse threads are carved with at above-mentioned screw rod two ends respectively, are respectively expansion screw section and binding thread section, and be provided with gripping section near expansion screw section one end, be connected to screw rod circumference in described gripping section cross section, lower planes is parallel; Described expansion screw section reach is advisable to facilitate casing expandable, and binding thread section reach is to be close to suitable with inner nut reach.

Above-mentioned outer nut is conventional hexagon nut, internal thread mates with expansion screw section, and described inner nut is hollow round table shape, is provided with several fin along round platform outer surface, fin extends to large end face from round platform small end face edge, and fin circumscribed circle diameter is between sleeve outer and casing inner diameter.Described inner nut internal thread coordinates with binding thread section.

The internal diameter of above-mentioned sleeve pipe is slightly larger than the small end outer diameter of inner nut; Described sleeve is peripherally provided with two length be symmetric near one end of expansion screw section be the gap of 2 ~ 5mm, and arranging near inside about the 5mm place of outer nut end the circular hole that two penetrate casing wall, described circular hole and gap are uniformly distributed along its circumference; Described sleeve pipe arranges several notch along its length near inner nut one end, and notch can block the fin outside inner nut, to ensure that inner nut and sleeve pipe rotating in same direction do not occur when screwing outer nut expansion and rotary screw removes.

An installation method for dismountable EXPANSION ANCHOR BOLTS, is characterized in that, comprises following installation steps:

Step one: sleeve pipe notch end is outwards penetrated screw rod, again by inner nut precession screw rod, make inner nut bottom surface concordant with screw rod end, then the notch of sleeve bottom is stuck on the fin of inner nut, and guarantee sleeve pipe and inner nut can not together with rotate, finally outer nut is rotated to contact sleeve end face to cannula tip by expansion screw section one end, ensure outer nut, sleeve pipe, inner nut three form one can not the entirety of free activity, and Expandable strip does not have obvious distending;

Step 2: stretch in boring by screw rod and outer nut, sleeve pipe, inner nut, the gripping section that is clamped prevents bolt rotary, screws outer nut simultaneously, and sleeve bottom is softened, until and firmly press together between hole wall, achieve the function of EXPANSION ANCHOR BOLTS.

A method for dismounting for dismountable EXPANSION ANCHOR BOLTS, is characterized in that, comprises following dismounting step:

Step one: unscrew outer nut to departing from screw rod;

Step 2: by rotating gripping section, making inner nut screw out to deviating from sleeve pipe direction, if now sleeve pipe also rotates, just blocking the gap of sleeve pipe outer end with fixture, continue to rotate gripping section until inner nut thoroughly departs from screw rod, and extract screw rod out;

Step 3: the circular hole clamping sleeve pipe with fixture, pulls out sleeve pipe, finally taken out by inner nut, now EXPANSION ANCHOR BOLTS achieves whole dismounting.

Compared with prior art, this detachable EXPANSION ANCHOR BOLTS assembling is simple, and can easily screw rod, sleeve pipe, inner nut be removed, so that shutoff hole for the expansion bolt, recover structure original appearance and prevent entering of aggressive substances, promote the integrity of repairing, extend and repair the life-span, also reduce waste of material in passing.

Accompanying drawing explanation

Fig. 1 is scheme of installation before this dismountable EXPANSION ANCHOR BOLTS expands.

Fig. 2 is the screw-rod structure figure of this dismountable EXPANSION ANCHOR BOLTS.

Fig. 3 is schematic diagram after this dismountable EXPANSION ANCHOR BOLTS expands.

Fig. 4 is the sectional drawing along screw axis after this dismountable EXPANSION ANCHOR BOLTS expands.

Fig. 5 is the inner nut structural representation of this dismountable EXPANSION ANCHOR BOLTS.

In figure, 1, screw rod, 1-1, binding thread section, 1-2, expansion screw section, 1-3, gripping section, 2, sleeve pipe, 2-1, gap, 2-2, circular hole, 2-3, notch, 2-4, Expandable strip, 3, inner nut, 3-1, fin, 4, outer nut.

Embodiment

Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.

As shown in Figures 1 to 5, a kind of detachable EXPANSION ANCHOR BOLTS, comprises screw rod 1, outer nut 4, inner nut 3, sleeve pipe 2.Described screw rod 1 is shaft-like, and two sections of contrary screw threads of direction are carved with at two ends, inner nut 3 and outer nut 4 realize position by screw rod 1 screw thread and move, outer nut 4 is conventional hexagonal nut, inner nut 3 is in hollow round table shape, fin 3-1 is provided with along outward edge, the inner diameter being slightly less than sleeve pipe 2 open bottom compared with small end face diameter of inner nut 3, sleeve pipe 2 inner diameter is slightly larger than screw rod 1 outer diameter, described sleeve pipe 2 is peripherally symmetrical arranged shallow gap 2-1 near outer nut 4 end, sleeve pipe 2 the other end is uniform is symmetrical arranged some notch 2-3, when being convenient to screw rod 1 with inner nut 3 relative movement, open bottom sleeve pipe 2 and hole wall close contact, possesses the bearing capacity of conventional EXPANSION ANCHOR BOLTS.

Preferably, two sections of reverse threads are carved with at above-mentioned screw rod 1 two ends respectively, are respectively expansion screw section 1-2 and binding thread section 1-1, and be provided with gripping section 1-3 near expansion screw section 1-2 one end, be connected to screw rod 1 circumference in described gripping section 1-3 cross section, lower planes is parallel; Described expansion screw section 1-2 reach is suitable to facilitate sleeve pipe 2 to be expanded to, and binding thread section 1-1 reach is to be close to suitable with inner nut 3 reach.

Preferably, above-mentioned outer nut 4 is conventional hexagon nut, and internal thread mates with expansion screw section 1-2, described inner nut 3 is in hollow round table shape, be provided with several fin 3-1 along round platform outer surface, fin 3-1 extends to large end face from round platform small end face edge, and fin 3-1 height is a little less than round platform maximum outside diameter.Described inner nut 3 internal thread coordinates with binding thread section 1-1.

Preferably, the internal diameter of above-mentioned sleeve pipe 2 is slightly larger than the small end outer diameter of inner nut 3; Described sleeve is peripherally provided with the gap 2-1 that two length be symmetric are 2 ~ 5mm near one end of expansion screw section 1-2, arranging near inside about the 5mm place of outer nut end the circular hole 2-2 that two penetrate sleeve pipe 2 wall, described circular hole 2-2 and gap 2-1 is uniformly distributed along its circumference; Described sleeve pipe 2 arranges several notch 2-3 along its length near inner nut 3 one end, and notch 2-3 can block the fin 3-1 outside inner nut 3, to ensure that inner nut 3 and sleeve pipe 2 rotating in same direction do not occur when screwing outer nut 4 expansion and rotary screw 1 removes.

An installation method for dismountable EXPANSION ANCHOR BOLTS, is characterized in that, comprises following installation steps:

Step one: the notch 2-3 of sleeve pipe 2 end is outwards penetrated screw rod 1, again by inner nut 3 precession screw rod 1, make inner nut 3 bottom surface concordant with screw rod 1 end, then the notch 2-3 bottom sleeve pipe 2 is stuck on the fin 3-1 of inner nut 3, and guarantee sleeve pipe 2 and inner nut 3 can not together with rotate, finally by outer nut 4 by expansion screw section 1-2 one end to sleeve pipe 2 rotary-top to contact sleeve end face, ensure outer nut 4, sleeve pipe 2, inner nut 3 three form one can not the entirety of free activity, and Expandable strip 2-4 does not have obvious distending;

Step 2: screw rod 1 and outer nut 4, sleeve pipe 2, inner nut 3 are stretched in boring, the gripping section 1-3 that is clamped prevents screw rod 1 from rotating, and screws outer nut 4 simultaneously, softened bottom sleeve pipe 2, until and firmly press together between hole wall, achieve the function of EXPANSION ANCHOR BOLTS.

A method for dismounting for dismountable EXPANSION ANCHOR BOLTS, is characterized in that, comprises following dismounting step:

Step one: unscrew outer nut 4 to disengaging screw rod 1;

Step 2: by rotating gripping section 1-3, inner nut 3 being screwed out to deviating from sleeve pipe 2 direction, if now sleeve pipe 2 also rotates, just blocking the gap 2-1 of sleeve pipe 2 outer end with fixture, continue to rotate gripping section 1-3 until inner nut 3 thoroughly departs from screw rod 1, and extract screw rod 1 out;

Step 3: the circular hole 2-2 clamping sleeve pipe 2 with fixture, pulls out sleeve pipe, is finally taken out by inner nut 3, and now EXPANSION ANCHOR BOLTS achieves whole dismounting.

Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.

Although more employ screw rod herein, inner hexagonal hole, dovetail post, expansion screw section, fastening screw rasp bar, inner sleeve, interior stern notch, interior swollen bar, outer sleeve, outer stern notch, outer swollen bar, outer circle hole, fastening cover, structure, through hole, the terms such as nut, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.

Claims (6)

1. a detachable EXPANSION ANCHOR BOLTS, comprises screw rod, outer nut, inner nut, sleeve pipe, and described screw rod is shaft-like, and two sections of contrary screw threads of direction are carved with at two ends, inner nut and outer nut realize position by screw flight and move, outer nut is conventional hexagonal nut, inner nut is hollow round table shape, fin is provided with along outward edge, inner nut be slightly less than inner diameter bottom ferrule openings compared with small end face diameter, identical with sleeve outer compared with large end face diameter, sleeve pipe inner diameter is slightly larger than shaft outer diameter, described sleeve pipe is peripherally symmetrical arranged shallow gap near outer nut end, the sleeve pipe the other end is uniform is symmetrical arranged some notches, when being convenient to screw rod and inner nut relative movement, sleeve bottom opens and hole wall close contact, possesses the bearing capacity of conventional EXPANSION ANCHOR BOLTS.
2. the detachable EXPANSION ANCHOR BOLTS of one according to claim 1, it is characterized in that, described screw rod two ends are respectively carved with one section in reverse screw thread, be respectively expansion screw section and binding thread section, gripping section is provided with near expansion screw section one end, be connected to screw rod circumference in described gripping section cross section, lower planes is parallel; Described expansion screw section reach is advisable to facilitate casing expandable, and binding thread section reach is to be close to suitable with inner nut reach.
3. detachable EXPANSION ANCHOR BOLTS according to claim 2, it is characterized in that, described outer nut is conventional hexagon nut, internal thread mates with expansion screw section, described inner nut is hollow round table shape, is provided with several fin along round platform outer surface, and fin extends to large end face from round platform small end face edge, fin circumscribed circle diameter is between sleeve outer and casing inner diameter, and described inner nut internal thread coordinates with binding thread section.
4. detachable EXPANSION ANCHOR BOLTS according to claim 3, is characterized in that, the internal diameter of described sleeve pipe is slightly larger than the small end outer diameter of inner nut; Described sleeve is peripherally provided with two length be symmetric near one end of expansion screw section be the gap of 2 ~ 5mm, and arranging near inside about the 5mm place of outer nut end the circular hole that two penetrate casing wall, described circular hole and gap are uniformly distributed along its circumference; Described sleeve pipe arranges several notch along its length near inner nut one end, and notch can block the fin outside inner nut, to ensure that inner nut and sleeve pipe rotating in same direction do not occur when screwing outer nut expansion and rotary screw removes.
5. the installation method of a kind of dismountable EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that, comprise following installation steps:
Step one: sleeve pipe notch end is outwards penetrated screw rod, again by inner nut precession screw rod, the notch of sleeve bottom is stuck on the fin of inner nut, and guarantee sleeve pipe and inner nut can not together with rotate, finally outer nut is rotated to contact sleeve end face to cannula tip by expansion screw section one end, guarantee outer nut, sleeve pipe, inner nut three form an entirety, and Expandable strip does not have distending;
Step 2: stretch in boring by screw rod and outer nut, sleeve pipe, inner nut, the gripping section clamping screw rod prevents bolt rotary, screws outer nut simultaneously, and sleeve bottom is softened, until and firmly press together between hole wall, achieve the function of EXPANSION ANCHOR BOLTS.
6. the method for dismounting of a kind of dismountable EXPANSION ANCHOR BOLTS according to claim 1, is characterized in that, comprises following dismounting step:
Step one: unscrew outer nut to departing from screw rod;
Step 2: by rotating gripping section, making inner nut screw out to deviating from sleeve pipe direction, if now sleeve pipe also rotates, just blocking the gap of sleeve pipe outer end with fixture, continue to rotate gripping section until inner nut thoroughly departs from screw rod, and extract screw rod out;
Step 3: the circular hole clamping sleeve pipe with fixture, pulls out sleeve pipe, finally taken out by inner nut, now EXPANSION ANCHOR BOLTS achieves whole dismounting.
CN201510092673.9A 2015-03-02 2015-03-02 Demountable expansion bolt and use method thereof CN104712630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510092673.9A CN104712630A (en) 2015-03-02 2015-03-02 Demountable expansion bolt and use method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510092673.9A CN104712630A (en) 2015-03-02 2015-03-02 Demountable expansion bolt and use method thereof

Publications (1)

Publication Number Publication Date
CN104712630A true CN104712630A (en) 2015-06-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106122205A (en) * 2016-06-30 2016-11-16 李星 A kind of expansion bolt

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2226669Y (en) * 1995-08-17 1996-05-08 顾洪昌 Dismounting expansion screw
CN2375807Y (en) * 1998-10-15 2000-04-26 薛如新 Metal expansion screw
CN2731162Y (en) * 2004-08-02 2005-10-05 王春华 Metal hanging anchor-bolt
CN201386717Y (en) * 2009-03-03 2010-01-20 郭振春 Easily removable expansion bolt
CN203374598U (en) * 2013-07-11 2014-01-01 张卫 Detachable expansion bolt

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2226669Y (en) * 1995-08-17 1996-05-08 顾洪昌 Dismounting expansion screw
CN2375807Y (en) * 1998-10-15 2000-04-26 薛如新 Metal expansion screw
CN2731162Y (en) * 2004-08-02 2005-10-05 王春华 Metal hanging anchor-bolt
CN201386717Y (en) * 2009-03-03 2010-01-20 郭振春 Easily removable expansion bolt
CN203374598U (en) * 2013-07-11 2014-01-01 张卫 Detachable expansion bolt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106122205A (en) * 2016-06-30 2016-11-16 李星 A kind of expansion bolt

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Application publication date: 20150617

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