CN2898408Y

CN2898408Y - Tensile expanded bolt

Info

Publication number: CN2898408Y
Application number: CN 200620019451
Authority: CN
Inventors: 张思贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-17
Filing date: 2006-04-17
Publication date: 2007-05-09
Anticipated expiration: 2016-04-17

Abstract

The utility model relates to a tensile expansion bolt which is composed of conical screw, taper expansion sleeve, positioning sleeve, spring washer and nut, the point diameter of the conical screw is large, middle is round bar, the rear part is arranged with thread, the both ends are arranged in axial direction with female conical expansion sleeve with symmetrical opening line matched with front end of conical expansion section, the conical screw round bar suited with a positioning sleeve closing upon taper expansion sleeve, the other end of spring washer and nut are connected in sequence on thread section of conical screw, each end of female conical expansion sleeve along axial direction has two opening lines with 180 degree. The utility model of tensile expansion bolt structure has the advantages of being rational with large torque, strong stretch resistance, safe and reliable usage, as a high strength expansion bolt, in particular to being suitable for fixing part on external wall.

Description

The tension EXPANSION ANCHOR BOLTS

Technical field:

The utility model relates to a kind of fastening piece, particularly a kind of tension EXPANSION ANCHOR BOLTS.

Background technique:

Existing bolt exists the tapered section of conical screw too short, and tapering is too big, and the expansion sleeve wall thickness is too thin, and whole wall thickness is the same, does not have female cone design, thus when using stressed section too short, expansion sleeve is whole when stressed, body of wall easy deformation and quick-fried slag, bolt are easily loosening.In addition, existing expansion sleeve is easily swung on screw rod, influence contacting of stressed section of expansion sleeve and body of wall, and easy generation is become flexible.

Summary of the invention:

Deficiency at above-mentioned prior art existence, the utility model provides a kind of tension EXPANSION ANCHOR BOLTS, it is by conical screw, the tapered expansion cover, setting sleeve, spring washer, nut is formed, the conical screw point diameter is big, the middle part is a round bar, the rear section is provided with screw thread, it is characterized in that: the inner conical expansion sleeve that two ends have the symmetrical openings line vertically links to each other with the front end conical section expansion coupling of conical screw, the conical screw round rod segment is set with a setting sleeve that is right after the tapered expansion cover, and the spring washer and the nut that are right after the setting sleeve the other end are connected in turn on the conical screw thread section.

The every end of described inner conical expansion sleeve has the aperture lines of two intervals, 180 degree vertically.

The tension EXPANSION ANCHOR BOLTS that the utility model provides, novel structure, reasonable in design, moment and stretching resistance are big, safe and reliable, and the fixed block that is specially adapted on the exterior wall uses, and is a kind of high-intensity EXPANSION ANCHOR BOLTS.

Description of drawings:

Fig. 1 is the utility model structural representation.

Fig. 2 is conical screw 1 structural representation among Fig. 1.

Fig. 3 is that tapered expansion is overlapped 2 structural front view among Fig. 1.

Fig. 4 is that the B of Fig. 3 is to view.

Fig. 5 is that the A of Fig. 3 is to view.

Fig. 6 is the plan view of Fig. 3.

Fig. 7 is the structural representation of setting sleeve 3 among Fig. 1.

Embodiment: reach embodiment in conjunction with the accompanying drawings and describe, but protection domain of the present utility model is not limited to accompanying drawing and embodiment.

As figure, the tension EXPANSION ANCHOR BOLTS that the utility model provides is made up of conical screw 1, tapered expansion cover 2, setting sleeve 3 etc., tapered expansion cover 2 is positioned at conical screw 1 front end, cooperatively interact between these two cone-shaped components, contact widely between conical screw and the tapered expansion cover, integral body is stressed.Tapered expansion cover two ends have the aperture lines of symmetry vertically, bulk expansion when expansion sleeve is stressed, and expansion sleeve or body of wall are not yielding, and non-explosive slag is difficult for loosening.Can reach the 1-6mm range of expansion during tension.The round bar that setting sleeve 3 is contained in the conical screw stage casing partly, setting sleeve control expansion sleeve can not move, the control screw rod can not swing, and guarantees being connected between bolt and the body of wall.Screw rod rear threads section is equipped with plain cushion 4, spring washer 5, nut 6.

During use, elder generation's drilling tool on concrete foundation or wall has the hole of the certain pore size and the degree of depth, it is fixing that EXPANSION ANCHOR BOLTS is inserted in the hole, fastening nut then, expansive screw is subjected to the pulling force of nut, conical screw outwards moves, and the tapered expansion cover is subjected to the restriction of conical screw, and tapered expansion cover nature expands and body of wall links into an integrated entity.

Claims

1, a kind of tension EXPANSION ANCHOR BOLTS, it is made up of conical screw, tapered expansion cover, setting sleeve, spring washer, nut, the conical screw point diameter is big, the middle part is a round bar, the rear section is provided with screw thread, it is characterized in that: the inner conical expansion sleeve that two ends have the symmetrical openings line vertically links to each other with the front end conical section expansion coupling of conical screw, the conical screw round rod segment is set with a setting sleeve that is right after the tapered expansion cover, and the spring washer and the nut that are right after the setting sleeve the other end are connected in turn on the conical screw thread section.

2, tension EXPANSION ANCHOR BOLTS as claimed in claim 1 is characterized in that: the every end of inner conical expansion sleeve has the aperture lines of two intervals, 180 degree vertically.