CN2435556Y

CN2435556Y - Means for pressure fastening bolt

Info

Publication number: CN2435556Y
Application number: CN 96216842
Authority: CN
Inventors: 隋承进
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-10
Filing date: 1996-07-10
Publication date: 2001-06-20
Anticipated expiration: 2006-07-10

Abstract

The utility model relates to a fastening device. Two end holes of a circular sleeve pipe 1 with a rubbing strip and a positioning strip are respectively provided with a front inner cone 5 and a rear inner cone 6. A general screw 10 passes through the central hole of the front inner cone 5 and is screwed in a bolt hole of the rear inner cone 6 to cause slit positions of both ends of the sleeve pipe 1 to be expanded and to be compacted and fixed on the inner wall of a drill hole.

Description

Hole-placed type presses solidly bolt device

The utility model relates to a kind of fastening means.

Often need assemble on certain basic object in daily production work and adhere to some component, method is to use bolt preferably, and it is convenient and swift.Present more use be EXPANSION ANCHOR BOLTS, its shortcoming and defect part is: 1, bearing capacity is little; 2, since its spiro rod length immobilize, so often influence using effect and press packing quality because of spiro rod length deficiency or length are superfluous.

The purpose of this utility model is to provide a kind of hole-placed type to press solidly bolt device, and it has bigger bearing capacity, and makes the spiro rod length can need be with freely changing by reality.

The purpose of this utility model is to realize with such scheme:

Garden shape sleeve pipe has garden shape to lead directly to endoporus, along outer garden fricting strip is arranged, and there is positioning strip the rear end, and at two ends two-way staggered cracking is arranged respectively.Inner cone and back inner cone before two stomidiums of sleeve pipe are equipped with respectively, pass the center hole of preceding inner cone and the screw of screw-in back inner cone with common screw, screw screw rod, inner cone slide in opposition before and after making produces expansion and is pressed abd fixed on the inner hole wall of boring at the two-end part of sleeve pipe.

This type is owing to be to pass preceding inner cone with common screw, and the method that is tightened in the back inner cone realizes the two ends expansion of sleeve pipe, so: 1, form two places at the forward and backward two ends of sleeve pipe and compress the zone, it is good therefore to be fixed intensity, and carrying is big; 2, owing to use common screw to cooperate, spiro rod length can need be used by reality and select, shortcoming in or the use that curtailment caused long because of screw rod can not take place, and superfluous spiro rod length can screw in foot of hole, and its nut end exposed parts neat appearance meets by the packing quality requirement; 3, because preceding inner cone also has supporting effect, can make screw rod have the radial load of bearing ability; 4, under the fricting strip effect, especially be fit to apical pore and use.

Be further described below in conjunction with the concrete structure and the use of drawings and Examples model utility:

Fig. 1 is the part figure in addition of the hole-placed type sleeve pipe that presses solidly bolt device, and Fig. 2 is the part figure in addition of inner cone thereafter, and Fig. 3 is the assembly structure figure of this device.

In other the part figure of sleeve pipe of Fig. 1, sleeve pipe 1 diameter is φ 13-24mm, has garden shape to lead directly to endoporus, and there is 2-4 the fricting strip 4 that five equilibrium is uniform in the garden outside its front middle part edge, 3 positioning strips 8 that above five equilibrium is uniform are arranged in its back-end, and respectively have at two ends and two-wayly more than 3 staggered to crack 2.

Fricting strip 4 is to be short strip shape in crack 2 root one side of sleeve pipe 1 front end, and its front end and tube wall disconnect, rear end and tube wall integral body, and opposite side is and the sizable rectangular opening 3 of fricting strip.Positioning strip 8 is to be the strip extension at the tube wall end to form its terminal invagination.

In other the part figure of back inner cone of Fig. 2, back inner cone 6 is garden shape truncateds cone, and there is screw 9 at the center, and strengthens chamfering in the small end, and there is the uniform locating slot of axially leaving 7 of five equilibrium in its outer garden from front middle part to big the end, has 2-4.

In the assembly structure figure of this device of Fig. 3, inner cone 5 before in the front aperture of sleeve pipe 1, being equipped with, there is through hole at the center, and its small end place has straight tube-like to extend, and length is inserted in the sleeve pipe front aperture unlikely coming off with application of force degree slightly and is advisable.The locating slot 7 of back inner cone 6 is inserted sleeve pipe 1 rear end and makes its small end enter in the hole a little along positioning strip 8 slips, again with positioning strip 8 along the inside bendings of back inner cone 6 big end outer rims, back inner cone 6 is positioned between positioning strip 8 and the sleeve pipe 1 back stomidium (locating slot equates with the maintenance of positioning strip quantity).The central through bore of inner cone 5 before passing with common screw 10 screws in the screw of back inner cone 6.

During use, inserting screw-driver in the rectangular opening 3 of the sleeve pipe 1 of this device prizes fricting strip 4, the fore-end that itself and casing wall are disconnected is outward-dipping to come out, again this device is placed boring, under the tight friction of fricting strip 4 and the wall of a borehole, make the sleeve pipe 1 of this device tentatively be fixed in the boring, and the front end that makes sleeve pipe 1 places the following proper depth of boring surface (making an appointment with several millimeters), screw out screw rod 10, make it to pass successively the fixed hole of the object that is fixed, the center hole of preceding inner cone 5, screw in the screw of back inner cone 6, screw screw rod again, make back inner cone 6 along positioning strip 8 linear slide, before inner cone 5 along screw rod 10 linear slide, then produce and expand and make on its inner hole wall that is pressed abd fixed on boring at the front end of sleeve pipe 1 and position, rear end.

Claims

1, hole-placed type presses solidly bolt device, is by sleeve pipe, and compositions such as preceding inner cone, back inner cone, common screw is characterized in that:

Garden shape sleeve pipe (1) has garden shape to lead directly to endoporus, has fricting strip (4) rear end that positioning strip (8) is arranged along outer garden, and at two ends two-way staggered cracking (2) is arranged respectively;

Front aperture is equipped with the preceding inner cone (5) of the garden shape truncated cone, and there is through hole at the center; Back stomidium is equipped with the back inner cone (6) of the garden shape truncated cone, and there is screw (9) at the center, and there is locating slot (7) in its outer garden and is slidingly matched with positioning strip (8);

Pass the central through bore of preceding inner cone (5) and the screw of screw-in back inner cone (6) with common screw.

2, it is characterized in that according to claim 1 described device: fricting strip (4) is short strip shape in crack root one side of (2) of sleeve pipe (1) front end, and front end and tube wall disconnect, and its rear end and tube wall integral body have 2-4 five equilibrium uniform.

3, it is characterized in that according to claim 1 described device: positioning strip (8) is strip at the end of sleeve pipe (1) and extends and form.

4, it is characterized in that according to claim 1 described device: the locating slot (7) of back inner cone (6) is that front middle part to the big end in garden outside it is axially left, and has 4.