CN102278343A - Direct-entering expansion bolt - Google Patents

Direct-entering expansion bolt Download PDF

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Publication number
CN102278343A
CN102278343A CN 201110197069 CN201110197069A CN102278343A CN 102278343 A CN102278343 A CN 102278343A CN 201110197069 CN201110197069 CN 201110197069 CN 201110197069 A CN201110197069 A CN 201110197069A CN 102278343 A CN102278343 A CN 102278343A
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CN
China
Prior art keywords
direct
bolt
back taper
anchor bolts
cutter hub
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Legal status (The legal status 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 status listed.)
Pending
Application number
CN 201110197069
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Chinese (zh)
Inventor
覃国君
王基培
龚川
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN 201110197069 priority Critical patent/CN102278343A/en
Publication of CN102278343A publication Critical patent/CN102278343A/en
Pending legal-status Critical Current

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  • Joining Of Building Structures In Genera (AREA)

Abstract

The invention discloses a direct-entering expansion bolt, which comprises an expansion sleeve (1); a bolt is matched in the expansion sleeve; and the front end of the bolt is provided with an inverse cone, a thread matched with a screw cap is tapped at the other end of the bolt, and the big end part of the inverse cone is provided with a drill bit (7). The direct-entering expansion bolt overcomes the defects of the known technology, and can be directly driven in use without preparing a special drill bit so as to save auxiliary time and processes in operation; and the direct-entering expansion bolt is convenient and fast in use, and is a great improvement on fastening devices.

Description

The direct-insert EXPANSION ANCHOR BOLTS
Technical field
The present invention relates generally to a kind of securing means, particularly a kind of swell fixture.
Technical background
Known swell fixture all has an expansion sleeve, the uniform opening that prolongs vertically more than at least two of sleeve pipe front end edge circumferencial direction, cooperate a screw in the sleeve pipe, the screw front end has back taper, the other end is attacked the screw thread that cooperates with nut, load onto suitable bit bore with percussive drill in advance during use, again whole swell fixture is filled in the hole, use hammering in case of necessity, screw nut again, make the back taper of screw burst sleeve pipe, thereby screw is hammered within the walls securely, though described swell fixture advantage is a lot, but deficiency is the screw of a kind of specification of every use, must cooperate suitable bit bore, the hole that drill bit bored is excessive or too small all not all right, makes troubles to construction, especially the very little occasion of consumption, can not prepare to have the drill bit of enough specifications, in a word, using the preceding palpus boring of swell fixture to fill in and tightening up is suitable trouble.
Summary of the invention
The object of the present invention is to provide a kind ofly can overcome the known technology shortcoming, do not need the direct-insert EXPANSION ANCHOR BOLTS of holing in advance before the mounting screw.
For achieving the above object, the solution of the present invention is: a kind of direct-insert EXPANSION ANCHOR BOLTS comprises an expansion sleeve, cooperate a bolt in the expansion sleeve, the front end of bolt has back taper, and the other end is attacked the screw thread that cooperates with nut, and its specialization is: the major part end of back taper is a drill bit.
Other scheme comprises: the pipe shaft of expansion sleeve has some spiral chutes, and is uniformly distributed with some openings along the circumference at the end near the bolt back taper.
Further scheme comprises that the other end of bolt shank is drilled with the hole perpendicular to rod axis, and described Kong Yuyi root pin cooperates.
When adopting such scheme fixed expansion bolt, do not need first boring, again fixing bolt, drill bit on the available bolt is together with bolt shank, utilize hand-held drill that bolt is hammered within the walls and tightens up, save the trouble of some operations and selection or preparation drill bit, thereby realized purpose of the present invention.
Below in conjunction with diagram and embodiment scheme is described in more detail.
Description of drawings
Fig. 1 is a direct-insert EXPANSION ANCHOR BOLTS plan view;
Fig. 2 is Fig. 1 side view;
Fig. 3 is a direct-insert EXPANSION ANCHOR BOLTS sleeve plan view;
Fig. 4 is a direct-insert bolt shank plan view;
Fig. 5 is the left view among Fig. 4;
Fig. 6 is Fig. 4 plan view.
Embodiment
Direct-insert EXPANSION ANCHOR BOLTS as shown in Figures 1 and 2, comprise expansion sleeve 1, in be with a bolt shank that cooperates with sleeve pipe 2, is furnished with nut 3, pad and spring washer 4 are arranged, the pipe shaft of sleeve pipe has the spiral chute 5 of some symmetrical distributions, as shown in Figure 3, and have opening 6 at mouth of pipe place, the mouth of pipe of band opening contacts with the back taper of bolt shank 2, the front end of back taper is a drill bit 7, the other end of bolt shank 2 is drilled with the hole, cooperates with pin 8, and pin is slightly long, outside all extended hole, two ends, pin-and-hole is that tapering or straight degree all can.
Disposable drill bit as bolt shank 2 front ends of Fig. 4 and Fig. 6, comprise a cutter hub 9, cutter hub 9 has certain width L, L slightly changes with the diameter difference of bolt, for example the bolt width of M6 is 3mm, the bolt width of M10 is 4mm, the front end of cutter hub 9 forms two straight line major cutting edges 10, forms angle, and the angle of its angle has certain limit, present embodiment is 118 °, certainly also within the application's consideration, there is stiffening rib 11 both sides of cutter hub 9 to other angle of employing, and stiffening rib is connected between the end face and cutter hub 9 of back taper, the big end of back taper cuts one diametrically symmetrically, form and be slightly less than the width H of cutter hub 9 apart from T between 12, two planes 12, two planes, and all the other local diameters of back taper equate with the width H of cutter hub 9, for example to the bolt of M10, width H is 15mm, and T is 12mm, the bolt of M6, width H is 11mm, and T is 8mm.
Major cutting edge 10 palpiforms become cutting angle α, as shown in Figure 4.
To burst the direction of swivel nut of sleeve pipe different for pierce direction and the bolt of bolt, and present embodiment pierces direction and is the inhour rotation, and the screw-in direction of nut is a clockwise direction.
Above-mentioned EXPANSION ANCHOR BOLTS uses extremely convenient, during use, sleeve pipe 1 is inserted in bolt shank 2 from an end, the bolt that exposes partly is inserted in nut 3, again pin 8 is filled in, clamp the head of bolt shank 2 with the chuck of percussion drill, and contain the part that pin 8 exposes, inhour is started rig, then the drill bit of bolt shank front end rotates and pierces in the body of wall, along with expansion sleeve 1 also enters, the formed slag of holing is discharged from 12 formed gaps, back taper plane and spiral slotted eye, dextrorotation jack panel 3 again after putting in place, the back taper of bolt shank 2 partly bursts the purpose that sleeve pipe 1 reaches fastening screw trip bolt, withdraw from nut again, installation needs the suspension member of installation, tightens up with nut to get final product again.
This direct-insert EXPANSION ANCHOR BOLTS has overcome the shortcoming of known technology, need not to prepare target drill during use, directly hammers into to tighten up to get final product, and is easy to use the auxiliary time when having saved operation, quick, is a very big improvement on the securing means.

Claims (6)

1. a direct-insert EXPANSION ANCHOR BOLTS comprises an expansion sleeve (1), cooperates a bolt in the expansion sleeve, and the front end of bolt has back taper, and the other end is attacked the screw thread that cooperates with nut, it is characterized in that: the major part end of back taper is drill bit (7).
2. a kind of direct-insert EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: the pipe shaft of expansion sleeve has some spiral chutes (5), and is uniformly distributed with some openings (6) along the circumference at the end near the screw back taper.
3. a kind of direct-insert EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: the other end of bolt shank (2) is drilled with the hole perpendicular to rod axis, and described Kong Yuyi root pin (8) cooperates.
4. a kind of direct-insert EXPANSION ANCHOR BOLTS according to claim 1, it is characterized in that: described drill bit comprises a cutter hub (9), the front end of cutter hub (9) forms two straight line major cutting edges (10), form angle, there is stiffening rib (11) both sides of cutter hub (9), and stiffening rib is connected between the end face and cutter hub (9) of back taper (6).
5. a kind of direct-insert EXPANSION ANCHOR BOLTS according to claim 4 is characterized in that: the angle that major cutting edge (10) forms is 118 °.
6. a kind of direct-insert EXPANSION ANCHOR BOLTS according to claim 4, it is characterized in that: the big end of back taper (6) cuts one diametrically symmetrically, form two planes (12), distance between two planes (12) is slightly less than the width H of cutter hub (9), and all the other local diameters of back taper (6) equate with the width H of cutter hub (9).
CN 201110197069 2011-07-14 2011-07-14 Direct-entering expansion bolt Pending CN102278343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110197069 CN102278343A (en) 2011-07-14 2011-07-14 Direct-entering expansion bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110197069 CN102278343A (en) 2011-07-14 2011-07-14 Direct-entering expansion bolt

Publications (1)

Publication Number Publication Date
CN102278343A true CN102278343A (en) 2011-12-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110197069 Pending CN102278343A (en) 2011-07-14 2011-07-14 Direct-entering expansion bolt

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CN (1) CN102278343A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105065407A (en) * 2015-08-16 2015-11-18 于国凡 Self-drilling pulling rivet
CN106759949A (en) * 2016-12-08 2017-05-31 上海通正铝业(昆山)航空科技有限公司 A kind of novel aluminmm alloy structure gusset-type joint connecting structure
CN107255107A (en) * 2017-07-06 2017-10-17 江苏永昊高强度螺栓有限公司 Expansion bolt
CN107288975A (en) * 2017-07-06 2017-10-24 江苏永昊高强度螺栓有限公司 Expansion bolt and its manufacturing process
WO2022104759A1 (en) * 2020-11-21 2022-05-27 徐州欧百瑞智能设备有限公司 Multi-pivot expansion bolt

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851560A (en) * 1972-10-02 1974-12-03 Deane C Self-drilling expansion roof bolt
CN2363110Y (en) * 1999-04-13 2000-02-09 陈刚健 Large-area expansion bolt
CN101158368A (en) * 2006-10-06 2008-04-09 廖国华 An improved sleeve anchor
CN101907117A (en) * 2009-06-05 2010-12-08 诚毅股份有限公司 Expansion screw

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851560A (en) * 1972-10-02 1974-12-03 Deane C Self-drilling expansion roof bolt
CN2363110Y (en) * 1999-04-13 2000-02-09 陈刚健 Large-area expansion bolt
CN101158368A (en) * 2006-10-06 2008-04-09 廖国华 An improved sleeve anchor
CN101907117A (en) * 2009-06-05 2010-12-08 诚毅股份有限公司 Expansion screw

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105065407A (en) * 2015-08-16 2015-11-18 于国凡 Self-drilling pulling rivet
CN105065407B (en) * 2015-08-16 2017-08-25 于国凡 From brill pulling rivet
CN106759949A (en) * 2016-12-08 2017-05-31 上海通正铝业(昆山)航空科技有限公司 A kind of novel aluminmm alloy structure gusset-type joint connecting structure
CN107255107A (en) * 2017-07-06 2017-10-17 江苏永昊高强度螺栓有限公司 Expansion bolt
CN107288975A (en) * 2017-07-06 2017-10-24 江苏永昊高强度螺栓有限公司 Expansion bolt and its manufacturing process
WO2022104759A1 (en) * 2020-11-21 2022-05-27 徐州欧百瑞智能设备有限公司 Multi-pivot expansion bolt

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Application publication date: 20111214