CN2886163Y

CN2886163Y - Expansion bolt

Info

Publication number: CN2886163Y
Application number: CN 200520143576
Authority: CN
Inventors: 周书鹤; 刘瑞军
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-16
Filing date: 2005-12-16
Publication date: 2007-04-04
Anticipated expiration: 2015-12-16

Abstract

The utility model relates to a bulging bolt which takes a stick action, in particular to a bulging bolt depending on bulging realized by the bolt body itself, which comprises a hollow bulging bolt body, a steel nail inserted into the hollow bulging bolt body, a nut matching to the rear end thread of the bulging bolt body, the hollow bulging bolt body refers to that a hole is opened on the rear end of the bulging bolt body, the front end is equipped with two mutually perpendicular lancings communicated with the hole, the length of the bulging part equals to that the length of the bulging bolt body knocks off the depth of the hole, the length range of the bulging part of the bulging bolt body is between 10 millimeter and one third of the whole bulging bolt body length from the front end beginning, the manufacturing technique is simple, the manufacturing cost is low, when the bulging bolt is used, the steel nail is knocked into the bulging bolt body by a hammer and the bulging function of the bolt can be just realized, the work efficiency is enhanced, the length of the exposed part can be mastered at random, due to the interposition of the steel nail, the bearing function of the bulging bolt is enhanced, the engineering quality can be assured well.

Description

EXPANSION ANCHOR BOLTS

Technical field

The utility model relates to the EXPANSION ANCHOR BOLTS of a kind of fixation, relates in particular to a kind of EXPANSION ANCHOR BOLTS that realizes expansion by body of bolt body.

Background technique

At present, the EXPANSION ANCHOR BOLTS that China uses mainly contains three types: a kind of is the EXPANSION ANCHOR BOLTS of using always of being furnished with expansion sleeve, when being to use, the EXPANSION ANCHOR BOLTS deficiency of this type generally all needs to make a call to a hole bigger than the diameter of bolt itself in bearing, after loading simultaneously, the exposed parts length of bolt is difficult to grasp, and influences construction quality easily.Second kind is (to see patent documentation by the fastening EXPANSION ANCHOR BOLTS of screw-thread fit realization, the patent No.: 200320109771), the expansion body of such EXPANSION ANCHOR BOLTS is a hollow tube body, be provided with internal thread in the expansion body, the one end is provided with joint-cutting, the bolt shank of another bolt is provided with the screw thread that matches with the internal thread of body of expanding, in the use, bolt shank screws in the expansion body by screw-thread fit, the expansion inboard wall of tube body is strutted, play fixation, the deficiency of this bolt is that the technology of manufacturing is comparatively complicated, and cost of production increases, and screws in the process of expansion in use simultaneously, the screw thread that screws cooperation can be subjected to very big bearing capacity, and the intensity of matching thread is all had higher requirement.The third belongs to a kind of internal expansion type EXPANSION ANCHOR BOLTS and (sees patent documentation, the patent No.: 99223660.6), the deficiency of this kind bolt is that the swell increment of dilation is not enough, and it is fastening that the rough surface that only depends on the dilation outside and the frictional force of boring inwall realize, is difficult to guarantee the quality of engineering.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art and provides a kind of body of bolt body that leans on to realize the EXPANSION ANCHOR BOLTS that expands, boring aperture is too big in the time of can solving first kind of EXPANSION ANCHOR BOLTS use, the not wield shortcoming of exposed parts length, can solve second kind of EXPANSION ANCHOR BOLTS complex manufacturing technology, the shortcoming that cost is high can solve the not enough shortcoming of the third EXPANSION ANCHOR BOLTS swell increment.

The purpose of this utility model is achieved in that the EXPANSION ANCHOR BOLTS body that comprises hollow, insert steel nail in the EXPANSION ANCHOR BOLTS body of hollow, with the nut of EXPANSION ANCHOR BOLTS body rear end screw-thread fit, it is characterized in that: the EXPANSION ANCHOR BOLTS body of hollow is meant in the rear end of EXPANSION ANCHOR BOLTS body and has the hole, be provided with two mutually perpendicular joint-cuttings at its front end, joint-cutting communicates with the hole, and the length that the length of dilation equals the EXPANSION ANCHOR BOLTS body deducts the degree of depth in hole.

The length range of the dilation of EXPANSION ANCHOR BOLTS body for from its front end begin 10mm to EXPANSION ANCHOR BOLTS body total length 1/3 between.

With the length of the matching used steel nail of EXPANSION ANCHOR BOLTS body and the equal in length of EXPANSION ANCHOR BOLTS body.

The utility model adopts this kind scheme to make EXPANSION ANCHOR BOLTS, preparation process is simple, cost of production is low, only need during use improved the efficient of work greatly, and the length of exposed parts can be grasped arbitrarily once the first steel nail of iron chains is knocked in the expansion function that the EXPANSION ANCHOR BOLTS body can be realized bolt, simultaneously, owing to the insertion of steel nail, strengthened the bearing capacity of EXPANSION ANCHOR BOLTS greatly, can well guarantee the quality of engineering.

Description of drawings

Fig. 1 is the structural representation of EXPANSION ANCHOR BOLTS body of the present utility model.

Fig. 2 is the side view of EXPANSION ANCHOR BOLTS body of the present utility model.

Fig. 3 is a steel nail structural representation of the present utility model.

Fig. 4 is the assembly structure schematic representation of EXPANSION ANCHOR BOLTS body of the present utility model and steel nail.

Embodiment

Shown in Fig. 1,2,3,4, the utility model comprise hollow the EXPANSION ANCHOR BOLTS body, insert steel nail in the EXPANSION ANCHOR BOLTS body of hollow, with its rear end screw thread 5 nut engaged, the EXPANSION ANCHOR BOLTS body of hollow is meant in the rear end of EXPANSION ANCHOR BOLTS body 1 and has hole 2, be provided with two mutually perpendicular joint-cuttings 3 at its front end, joint-cutting 3 communicates with hole 2, and the length that the length of dilation equals EXPANSION ANCHOR BOLTS body 1 deducts the degree of depth in hole 2.

The length range of the dilation of EXPANSION ANCHOR BOLTS body 1 for from its front end begin 10mm to EXPANSION ANCHOR BOLTS body 1 total length 1/3 between.With the length of EXPANSION ANCHOR BOLTS body 1 matching used steel nail 4 and the equal in length of EXPANSION ANCHOR BOLTS body 1.

The technological scheme that adopts is that the EXPANSION ANCHOR BOLTS body of EXPANSION ANCHOR BOLTS is designed to a local hollow tube body, a threaded end is holed vertically on the EXPANSION ANCHOR BOLTS body, the axis coinciding of the center in hole and EXPANSION ANCHOR BOLTS body, there is not an end of screw thread to intersect vertical joint-cutting on the EXPANSION ANCHOR BOLTS body, article two, the axis coinciding of the intersection point of joint-cutting and EXPANSION ANCHOR BOLTS body, the hole communicates with joint-cutting, to guarantee that simultaneously dilation will have enough expansion length and swell increment, dilation promptly is that the EXPANSION ANCHOR BOLTS body deducts the remaining part in boring part back, make special-purpose steel nail and the supporting use of EXPANSION ANCHOR BOLTS body, the diameter of requirement steel nail is less than the diameter in hole on the EXPANSION ANCHOR BOLTS body, form Spielpassung with the hole, the length of steel nail equals the length of EXPANSION ANCHOR BOLTS body.

Embodiment of the present utility model: during use, the at first fixed position punching of choosing, require the diameter in hole identical with the diameter of EXPANSION ANCHOR BOLTS body 1, the degree of depth in hole is formulated by user's requirement, then EXPANSION ANCHOR BOLTS body 1 is inserted in the hole, subsequently steel nail 4 is knocked in the EXPANSION ANCHOR BOLTS body 1 by hole 2, in steel nail 4 all enters hole 2 and joint-cutting 3 in the EXPANSION ANCHOR BOLTS body 1, dilation is strutted fully, load onto at last that jack panel promptly reaches fastening purpose on the pad.

Claims

1, a kind of EXPANSION ANCHOR BOLTS, comprise hollow the EXPANSION ANCHOR BOLTS body, insert steel nail in the EXPANSION ANCHOR BOLTS body of hollow, with the nut of its rear end screw-thread fit, it is characterized in that: the EXPANSION ANCHOR BOLTS body of hollow is meant in the rear end of EXPANSION ANCHOR BOLTS body (1) and has hole (2), be provided with two mutually perpendicular joint-cuttings (3) at its front end, joint-cutting (3) communicates with hole (2), and the length that the length of dilation equals EXPANSION ANCHOR BOLTS body (1) deducts the degree of depth of hole (2).

2, a kind of EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: the length range of the dilation of EXPANSION ANCHOR BOLTS body (1) for from its front end begin 10mm to EXPANSION ANCHOR BOLTS body (1) total length 1/3 between.

3, a kind of EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: with the length of the matching used steel nail of EXPANSION ANCHOR BOLTS body (1) (4) and the equal in length of EXPANSION ANCHOR BOLTS body (1).