CN2217658Y

CN2217658Y - Anchoring tool

Info

Publication number: CN2217658Y
Application number: CN 94230670
Authority: CN
Inventors: 尤立新
Original assignee: WUHAN COMMUNICATION SCIENCE & TECHNOLOGY UNIV; China Minmetals Dalian Second Steel Rolling Mill Extension Machine Branch
Current assignee: WUHAN COMMUNICATION SCIENCE & TECHNOLOGY UNIV; China Minmetals Dalian Second Steel Rolling Mill Extension Machine Branch
Priority date: 1994-11-15
Filing date: 1994-11-15
Publication date: 1996-01-17
Anticipated expiration: 2004-11-15

Abstract

The utility model discloses an anchoring tool, which is used for increasing the prestress of reinforcement in concrete and improving the strength of the concrete. The anchoring tool is composed of an anchoring ring 1 and an anchoring plug 2 arranged in the inner cone hole of the anchoring ring 1, and the circumferential surface of the anchoring plug 2 is matched with the inner cone hole of the anchoring ring 1. The utility model is characterized in that a hole is arranged on the cone surface of the anchoring plug 2 matched with the anchoring ring 1, and the hole is composed of a half circular slot 3 on the inner cone hole of the anchoring ring 1 and a half circular slot 4 on the outer circumference of the anchoring plug 2. The utility model has the advantages of large contact area, large friction force, and high concrete strength.

Description

Ground tackle

The utility model relates to a kind of ground tackle, mainly is the prestressing force that is used to increase concrete reinforcing steel, improves concrete intensity.

Existing ground tackle is by anchor ring and place male cone in the anchor ring internal taper hole to form, and the fitting face between anchor ring and the male cone is the conical surface, on the male cone conical surface, is processed with screw thread.During use, reinforcing bar is placed in the bellows that is embedded in the concrete, the two ends of reinforcing bar is respectively by the conical surface that cooperates between anchor ring and the male cone, simultaneously with the jack reinforcing bar that stretches, when treating that reinforcing bar reaches the tensile stress of regulation, with the male cone roof pressure in anchor ring, the reinforcing bar two ends is clamped by anchor ring and male cone, have certain tensile stress all the time, reach the purpose that increases concrete intensity.This structure ground tackle has following shortcoming: the cooperation conical surface of ground tackle and the contact area of reinforcing bar are little, and promptly just point or line contact causes frictional force little simultaneously, makes the prestressing force deficiency of reinforcing bar, influences concrete strength.

The purpose of this utility model provides the big novel anchorage of contact area between a kind of reinforcing bar and the ground tackle, to increase frictional force, improves the prestressing force of reinforcing bar.

Technical solution of the present utility model is: a kind of ground tackle, by anchor ring 1 with place the male cone 2 in anchor ring 1 internal taper hole to form, the internal taper hole of the circumferential surface of male cone 2 and anchor ring 1 is complementary, it is characterized in that: described anchor ring 1 is provided with hole 10 with the conical surface that matches of male cone 2, and hole 10 is made up of the half slot 4 on half slot 3 on anchor ring 1 internal taper hole and male cone 2 excircles.

Described hole 10 is a screwed hole.

The quantity in described hole 10 is 5～12.

The tapering of the male cone (strobilus masculinus) of the internal taper hole of described anchor ring 1 and male cone 2 is: 1: 7～1: 10.

The material of described anchor ring 1 is No. 45 steel, and the material of male cone 2 is 20Cr.

Described male cone 2 is through Carburization Treatment.

The utility model compared with prior art, owing to be provided with the hole of forming by half slot on the anchor ring and the half slot on the male cone on the fitting face between anchor ring and the male cone, steel bar end places in the hole, contact for face between the inner surface in hole and the reinforcing bar, therefore it is big to the utlity model has contact area, the advantage that frictional force is big, prestressed, reinforced greatly, concrete strength is high.

Below in conjunction with the drawings and the specific embodiments the utility model is further described:

Fig. 1 is the front view of the utility model embodiment;

Fig. 2 is a left view shown in Figure 1;

Fig. 3 is the front view of anchor ring among the utility model embodiment;

Fig. 4 is a left view shown in Figure 3;

Fig. 5 is the front view of male cone among the utility model embodiment;

Fig. 6 is a left view shown in Figure 5;

Fig. 7 is the user mode figure of the utility model embodiment.

As shown in Figure 1, 2: 1 is anchor ring, and its material is No. 45 steel, and the outside is cylindric, and internal turning has taper hole 5, and its tapering is 1: 8 (tapering between 1: 7～1: 10 all can).Six half slots 3 evenly distribute on the inner surface of taper hole.The material of the male cone 2 that is complementary with anchor ring 1 internal taper hole is 20Cr, through Carburization Treatment, on the male cone (strobilus masculinus) of male cone 2, evenly distribute six with described half slot 3 corresponding half slots 4, half slot 3 is just formed a circular apertures 10 with half slot 4.According to the different-diameter of use reinforcing bar, can be processed into the hole 10 of different-diameter, form series of products, the quantity in hole 10 is 5～12.In order to increase frictional force,, be processed with screw thread being on the inner surface of half slot 3 and 4 on the inner surface in hole 10.Be processed with a hole 11 in the center of male cone 2, so that connect grout pipe from this place's grouting.

As shown in Figure 7: its course of work is: at first when casting concrete that bellows 9 is within it pre-buried, treat about concrete setting to 80%, reinforcing bar 7 is placed in the bellows 9, both sides are provided with the anchor plate 8 that matches with anchor ring 1, reinforcing bar 7 two ends place respectively that the back joins with jack 6 in the hole 10 on anchor ring and the conical surface that male cone matches, both sides make jack 6 work simultaneously, at this moment, reinforcing bar 7 is stretched, when reaching the prestressing force of defined, more simultaneously with male cone 2 roof pressures in anchor ring 1, pull down jack 6 again after making reinforcing bar clamped, can reach reinforcing bar 7 and have certain prestressing force all the time, increase the purpose of concrete strength.

The utility model is not only limited to above-described embodiment, and any possible mode all belongs to basic thought of the present utility model.

Claims

1, a kind of ground tackle, by anchor ring [1] with place the male cone [2] in anchor ring [1] internal taper hole to form, the internal taper hole of the circumferential surface of male cone [2] and anchor ring [1] is complementary, it is characterized in that: described anchor ring [1] is provided with hole [10] with the conical surface that matches of male cone [2], and hole [10] are made up of the half slot [4] on half slot [3] on anchor ring [1] internal taper hole and male cone [2] excircle.

2, ground tackle according to claim 1 is characterized in that: described hole [10] are screwed hole.

3, ground tackle according to claim 1 and 2 is characterized in that: the quantity of described hole [10] is 5～12.

4, ground tackle according to claim 3 is characterized in that: the tapering of the male cone (strobilus masculinus) of the internal taper hole of described anchor ring [1] and male cone [2] is: 1: 7～1: 10.

5, ground tackle according to claim 4 is characterized in that: the material of described anchor ring [1] is No. 45 steel, and the material of male cone [2] is 20Cr.

6, ground tackle according to claim 5 is characterized in that: described male cone [2] is through Carburization Treatment.