CN2761735Y

CN2761735Y - Joining structure of reinforced bar

Info

Publication number: CN2761735Y
Application number: CN 200420118462
Authority: CN
Inventors: 钱冠龙; 尹松
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-10-18
Filing date: 2004-10-18
Publication date: 2006-03-01
Anticipated expiration: 2014-10-18

Abstract

The utility model discloses a joining structure of a steel bar. The utility model comprises a pair of semicircular connecting clamping sleeves, a pair of steel bar end heads and a pair of ring hoops, wherein the surfaces of steel bar end heads are provided with cold pressing concave and convex stripes; the inner surfaces of the connecting clamping sleeves are provided with concave and convex stripes corresponding to the cold pressing concave and convex stripes of the surfaces of steel bars; the two ring hoops are arranged at the outer sides of the clamping sleeves. The diameter of the middle part of the outer side of each connecting clamping sleeve is larger than the diameters of both ends, and the inner diameter of each ring hoop is slightly larger than the outer diameters of both ends of each connecting clamping sleeve. Because of the outer diameter difference of both ends and the middle part of each connecting clamping sleeve, when the utility model is connected, the ring hoops move toward the middle parts, the concave and convex stripes of the connecting clamping sleeves and the end parts of the steel bar are engaged mutually, and the fastening connection is realized. The utility model has the advantages that the strength of joints exceeds the strength of parent metals of the steel bars, the assembly and the connection at site are convenient and quick, the quality is reliable, the cost is low, and the structure is superior to the mechanically connecting structures of the steel bars.

Description

The syndeton of reinforcing bar

Technical field

The utility model relates to the syndeton of a kind of reinforcing bar in the construction work.

Background technology

In the modern architecture, reinforcing bar connects speed of application and joint quality has very big influence to programming and workmanship, therefore is regarded as a key link of structure design and construction always.The connecting method for reinforcing bars that adopts in the concrete building structures mainly contains colligation, welding both at home and abroad, and mechanical connection, and at present, the taper thread in the mechanical connection method connects, the sleeve extruding connects, jumping-up is threaded, roll extrusion straight thread connection etc. used more general.But these methods all exist deficiency: taper thread connects, and the intensity of joint does not reach parent material of reinforcement rebar intensity, and the application in structure is restricted; The sleeve extruding connects, and the sleeve steel using amount is big, and cost is higher, and equipment is heavy when station is constructed, and connection speed is slower; Jumping-up connects, and makes steel bar joint screw and needs jumping-up, cutting thread twice manufacturing procedure, and operation and qualifying point are more; The roll extrusion straight thread connects, and with the technology of rolling and processing screw thread again behind the stripping rib, a screw thread steel silk machining period is longer usually, and the number of turns of rotational sleeve is also more during connection, and the winding operation in the intensive reinforcing bar is pretty troublesome.In addition, once the someone had proposed a kind of " Ribbed Bar kink jointing " (Chinese patent ZL97215872.3), it is quick and convenient when this joint connects, but need the cross rib of reinforcing bar appearance and the helicla flute in its adapter sleeve well to coincide and to use, and concerning reinforcing bar, the cross rib of reinforcing bar appearance itself is not to design and process for connecting reinforcement, so the product differentiation of different manufacturers is very big, even the mould of the different steel rolling muscle of same producer also has than big-difference, the manufacturer of adapter sleeve can not design by the rolling mould of corresponding reinforcing bar correspondingly, produce adapter sleeve, so this joint can't be applied so far.

Summary of the invention

The purpose of this utility model just provides a kind of steel bar connecting structure, solves construction inconvenience and inefficient problem that prior art exists.Satisfy architectural design, unit in charge of construction better to reinforcing bar connection speed and performance demands.

The technical solution of the utility model is: comprise a pair of end reinforced, a pair of semicircle chuck and two hoops of connecting that will dock, a pair of connection chuck to be buckled in a pair of end reinforced outside, two hoops are enclosed within and connect outside the chuck, be equipped with the asperities of coincideing mutually in the described end reinforced outside and the inboard that is connected chuck, and be meshing with each other together; The middle part diameter in the outside of described connection chuck is greater than the diameter at two ends, and the internal diameter of hoop is slightly larger than the external diameter that connects the chuck two ends, and two hoops make two connection chucks draw close and be close to reinforcing bar when the joint middle part advances.

Described asperities can be the arc with the reinforcing bar axis normal, also with the reinforcing bar axis angle greater than 0.Oblique arc.Asperities adopts cold presswork to form, and belongs to non-machining, and is similar to the rolled thread principle, can not reduce the bonding strength of reinforcing bar linkage section, and the groove and the fin precision height of processing, can be good fit with the asperities that is connected chuck, reach good connection effect.

Advantage of the present utility model: because the external diameter at the two ends of connection chuck of the present utility model and middle part is poor, can be fastening to the mobile realization at middle part when connecting by hoop, add being meshing with each other of chuck and end reinforced asperities, can finish the joint winding at scene, various position easily and quickly, the joint volume is little, performance is good, and cost is low, is better than existing reinforcing steel bar machinery syndeton; The reinforcing bar at any position of structure, with ribbing, Ribbed Bar can both not finished connection apace with this structure; Bonding strength surpasses parent material of reinforcement rebar, and quality of connection is reliable.

Below in conjunction with accompanying drawing syndeton of the present utility model is described further.

Description of drawings

Fig. 1 is the overall syndeton vertical section schematic diagram of the utility model;

Fig. 2 is the A-A cross-sectional schematic of Fig. 1;

Fig. 3 is a kind of end reinforced example structure schematic diagram after the extruding;

Fig. 4 is the another kind of end reinforced example structure schematic diagram after the extruding.

The specific embodiment

Referring to Fig. 1～Fig. 4, steel bar connecting structure of the present utility model comprises end reinforced 1, a pair of semicircle chuck 3 and two hoops 2 of connecting of butt joint.Be equipped with the asperities (or being called the groove fin) 4 of coincideing mutually in described end reinforced 1 the outside and the inboard that is connected

chuck

3,3 pairs of a pair of connection chucks are buckled in outside a pair of end reinforced 1, and their asperities is meshing with each other together.Two hoops 2 are enclosed within the outside at the close two ends that connect chuck 3.The middle part diameter in the outside of described connection chuck 3 is greater than the diameter at two ends, and the internal diameter of hoop 2 is slightly larger than the external diameter that connects chuck 3 two ends, and two hoops 2 make connection chuck 3 draw close and be close to reinforcing bar 1 when the joint middle part advances, and promptly finish connection.Asperities 4 can be an arc shown in Figure 3 and axis normal reinforcing bar 1, also shown in Figure 4 and the oblique arc of reinforcing bar axis angle greater than 0 °.

End reinforced asperities 4 of the present utility model adopts moulding form cold moudling, similar to the rolled thread principle, reinforcing bar connection asperities is made in cold working, do not reduce the bonding strength of reinforcing bar linkage section, and asperities machining accuracy height, can be good fit with the asperities that is connected chuck, reach good connection effect.

Claims

1, a kind of steel bar connecting structure, comprise end reinforced, a pair of semicircle chuck and two hoops of connecting, a pair of connection chuck to be buckled in a pair of end reinforced outside, two hoops are enclosed within and connect outside the chuck, it is characterized in that: be equipped with the asperities of coincideing mutually in the described end reinforced outside and the inboard that is connected chuck, and be meshing with each other together; The middle part diameter in the outside of described connection chuck is greater than the diameter at two ends, and the internal diameter of described hoop is slightly larger than the external diameter that connects the chuck two ends.

2, steel bar connecting structure according to claim 1, it is characterized in that: the asperities in described end reinforced outside extrusion process is at normal temperatures made, asperities can be and the arc of reinforcing bar axis normal, also can be and the oblique arc of reinforcing bar axis angle greater than 0 °.