KR20200078815A - Collet integrated coupler of ribbed steel bars - Google Patents

Abstract

The present invention relates to a collet-integrated ribbed reinforcing bar coupler and, more specifically, to a collet-integrated ribbed reinforcing bar coupler capable of easily and tightly connecting a ribbed reinforcing bar by enabling a collet (4) installed at both ends of a coupling body (1) to mechanically interfere with the outer diameter and joints (11) of the ribbed reinforcing bar when tightened with an integrated collet clamp (2). According to the present invention, in order to solve problems of an existing ribbed reinforcing bar connection method, the collet-integrated ribbed reinforcing bar coupler comprises: a coupler coupling body (1) attached to the surface of a ribbed reinforcing bar and including a collet (7, see FIG. 3) mechanically interfering by engaging joints of the ribbed reinforcing bar; and each collet clamp (2) elastically pressing a collet part of the coupling body when screws are tightened at both ends of the coupling body. Meanwhile, two kinds of three components are integrated in order not to be separated. Therefore, losses of components can be prevented and component management can be facilitated, construction efficiency on the site can be improved through rigid connection of ribbed reinforcing bars, and joint parts of ribbed reinforcing bars can be uniformly constructed and connection strength can be guaranteed, which can lead to an improvement in the quality and strength of a rebar concrete structure.

Description

Integrated clasp type rebar fitting device {COLLET INTEGRATED COUPLER OF RIBBED STEEL BARS}

The present invention relates to a mechanical molded rebar fitting device, and more specifically, after placing the clasp (part 4) of the fixed body (part 1) between the nodes (part 11) of the molded rebar for reinforced concrete, assembled integrally It relates to a clasp-integrated release rebar fitting device that tightly connects a release rebar by tightening the clasp fastener (Part No. 2) to elastically close the clasp to the release rebar and mechanically interfere with the release rebar node.

Concrete structures applied in construction or civil engineering are strong against compressive loads, but are vulnerable to tensile loads.For reinforcement of concrete structure strength and seismic performance, construct reinforced concrete structures by constructing a structural skeleton using molded rebars that conform to the specifications and pouring concrete. By doing so, it is required to reinforce it to withstand the tensile load caused by bending, deflection, and torsion due to external forces applied to buildings and civil structures.

In order to comply with this, a reinforcing skeleton of a reinforced concrete structure for construction and civil engineering is constructed by bending forming a reinforcing bar, and a reinforcing bar connection work is required to assemble and connect a reinforcing reinforcing bar structural structure and to extend the length of a reinforcing bar.

Normally, the connection of the reinforcing bar is applied by the overlapping, pressure welding joint, and mechanical jointing methods. The overlapping is a method in which the reinforcing bars are overlapped by a predetermined length and bound by a binding line, and the welding joints are heated by joining the reinforcing bar connecting parts. It is a method of welding by crimping.

The conventional mechanical connection method is a method in which screws are machined and connected to a reinforcing bar, or a cohesive device such as a wedge or a ratchet mechanism is applied to a cohesive device such as a wedge in close contact with a rebar.

In general, in the field, the connection work of the reinforcing bar is performed by methods such as overlapping, welding and mechanical joints. The overlapping method, in which the reinforcing bars are partially overlapped and tied together with a binding line, is difficult to construct because the strength of the part tied with the binding line is not strong and the joints are not uniform, and the reinforced concrete structure is limited. It should be carried out with welding technology, and the reinforcing bar strength is weakened by welding heat, and there is a risk of fire.

The connection mechanisms used in the existing mechanical joint method are composed of several parts such as a contact wedge, a tightening mechanism, and a joint body, making it difficult to manage and procure parts due to the complicated structure and procedure. There have been problems such as.

Therefore, it is easy to prevent loss of parts and loss of parts and manage parts, and it is possible to firmly connect the reinforcing bars to improve the construction efficiency in the field, uniformly construct the reinforcing bar joints and guarantee the connection strength to ensure the quality of the reinforced concrete structure. It is necessary to find a way to improve the over-strength and to solve problems in the construction site.

In order to achieve the above object, the present invention is basically a clasp (part 4) that deforms within the elastic range when pressed between the nodes of the rebar and adheres to the outer diameter of the rebar while mechanically interfering with the rebar node (site 11). ) Is composed of a fixed body (Part No. 1) installed at both ends and a respective clamp fastener (Part No. 2) that presses the clasp part of the fixed body when tightening the screws at both ends of the fixed body. It is assembled in one piece, so it is easy to prevent loss of parts, loss of parts, and easy to manage parts, and it can improve the construction efficiency in the field because it can firmly connect the reinforcing bars, uniformly construct the reinforcing bar joints and guarantee the connection strength to reinforced concrete It is to provide a mechanical stiffening joint fitting with a simple and sturdy clasp that can improve the quality and strength of the structure.

The present invention is a mechanical joint device for resolving the disadvantages of double-joint and pressure-welded joints, and solves the existing problems such as deterioration of quality and strength of reinforced concrete structures, complexity in construction, tensile strength of molded reinforced steel due to heat, and risk of fire. The effect can be expected.

According to the present invention, if the burr of the cutting process for the connection of the reinforcing bar and the cutting surface of the reinforcing bar is not greater than the node height of the reinforcing bar, it can be firmly connected without removing burrs, etc., and because of the various ribs and node structures of various reinforcing bars, the existing mechanical type The fitting mechanisms of the jointing device are difficult to firmly fix all shapes of reinforcing bars and have a complicated structure, but according to the present invention in which the reinforcing bar jointing devices are integrated, the joints of the reinforcing bars having a gap defined in the KS standard, etc. The clasp part (part 4) of the fixed body (Part No. 1) can be accurately positioned between the deformed rebar nodes by using it, and when the clasp fastener (Part 2) assembled in one body is tightened, the clasp part of the fixed body is in contact with the surface of the deformed rebar. The object of the present invention can be achieved by resiliently adhering, mechanically interfering with the reinforcing bar node (part 11) (see also FIG. 3) and realizing a solid reinforcing bar connection, and also dismantling and disassembling the joint. When work is required, simply remove the pressure by rotating the clamp fastener, and the mechanical jam is relaxed by the elasticity of the latch, so that the purpose of the work can be achieved, and reassembly is possible.

Figure 1 is an exploded view of a mechanical release type joint and an integral part of a clasp Figure 2 is an example of parts for connecting the rebar 3 is an explanatory diagram of the connection work process Figure 4 is an exemplary view of the joint part of the reinforcing bar after completing the connection work Figure 5 is a fixed body and clasp fastener assembly process diagram Figure 6 is an exemplary view of the connection work of different diameter reinforcing bars 7 is an example of connection with the foundation of a reinforced concrete foundation structure 8 is an exemplary view of connecting a rebar to connect a steel structure Figure 9 is an example of multi-branch (multi-branch) shape heterorebar connection Figure 10 is an example of the connection between the reinforcing bars that cannot align the rib angle

Ways to implement the basic invention ：

1. The basic application of the present invention is a mechanical joint of a reinforcing bar connecting the rebars having the same nominal diameter (article number 3). The reinforcing device of the reinforcing bar according to the present invention is a simple and sturdy joint device composed of two types of three parts (refer to FIGS. 1 and 2) and assembled together. In general, it is possible to quickly, accurately and firmly fix a reinforcing bar having a symmetrical node, but it can be easily applied even when the bar of a reinforcing bar is asymmetrical. It can be applied to structural connection of square bar (including hollow bar).

2. The reinforcing bar may have a burr as a result of the cutting operation, but if it is lower than the node or rib height of the reinforcing bar, the reinforcing bar mechanical joint device of the present invention can connect the reinforcing bar without additional work.

3. Insert the reinforcing bar so that the 3rd to 4th nodes of the end of the reinforcing bar to be connected coincide with both ends (part 8 of part number 2) of the disengaging rebar to be connected to the integrated all-in-one rebar fitting. Refer to the preparation posture on the left side of the figure).

4. In this posture, the integrated assembly structure of the fixed body and the clasp fastener is located at the mechanical interference clasp part (part 7 of part 1) between the nodes of the inserted rebar.

5. When the prescribed torque is applied by rotating the clasp fastener in the aligned posture (refer to the left side of FIG. 3), the clasp fastener inner diameter inclined machining surface (part 5 of part 2) is fixed body clasp outer diameter inclined machining surface (part 1 By squeezing the part 6), the clasp part of the fixed body comes into close contact with the outer diameter between the deformed rebar nodes, and the jaw (part 7 of part No. 1), which is the interference part of the clasp, mechanically interferes with the deformed bar's node within a limited space. As this is done, the rebar is firmly connected.

Ways to implement application of the basic invention:

The basic object of the invention is the construction of connecting the reinforcing bars of the same nominal diameter, but it is possible to apply the construction to connect the reinforcing bars between different nominal diameters. An example drawing for this is shown in FIG. 6.

Ways to implement application of the basic invention:

The construction of the basic bolts of buildings and civil structures with heterogeneous reinforcing bars is shown in Fig. 7 to show the application constructions that can be connected to the reinforcing steel bars of the upper reinforced concrete structures.

Ways to implement application of the basic invention:

Fig. 8 shows the application construction to connect steel (angle, H and I-beam and steel plate welded structures) of buildings and civil structures with the reinforcing bars, which are the steel frames of upper reinforced concrete structures.

Ways to implement application of the basic invention:

In Fig. 9, a multi-branch type rebar connection application construction applicable to complex and diverse shapes of reinforcing reinforced concrete frame structures (the number of connecting branches, shape, and branch angle are produced by adjusting the shape according to the requirements of the reinforcing bar jointing) Show.

Ways to implement application of the basic invention:

Even if the assembling angle of the reinforcing bar rib cannot be matched due to the complex and diverse shapes of the reinforcing bar concrete frame structure, the fixed bodies are armed to securely connect the rib grooves of the clasp to the rib angle of the reinforcing bar. , Made by separating the female fixed body (Part No. 18) and male fixed body (Part No. 19) equipped with male screws, aligning the rib deviation angle (Fig. 10, angle A) between the rebars, and locking nut (Part No. Fig. 10 shows the applied construction to connect the reinforcing bars by fixing with 20).

Article number 1 ： Collet integrated coupling body
Part No. 2, 2': Collet clamp
Part number 3, 3': ribbed steel bar
Part 4 ： Fixed body's collet part
Part 5 ： Clamp clamp inner diameter tapered surface
Part 6 ： Outer diameter tapered surface of clasp
Part 7: Mechanical interference with the anterior bar rebar node of the clasp
Part 8: ：Assembly stage for measuring the assembly position of the reinforcing bar of the clamp fastener
Part 9： Fixed body auxiliary scale for confirming assembly angle
Part 10: Fixed body clasp part rib slot
Site 11 ： Rebar rebar (transverse rib) site
Site 12： Rebar rib (longitudinal rib) site
Part 13: Integrated jaw part of clasp fastener
Part 14: The assembly jaw part of the fixed body clasp
Article number 15: Nut
Article number 16: (Spring) washer
Article number 17: Multi-branch type (3-axis center type) fixed body
Article number 18: Female body (coupler body, female)
Article number 19: Male body (coupler body, male)
Part number 20: Locking Nut

Claims (9)

It is fixed to the outer diameter of the reinforcing bar to which the rebar standard (KS D 3504, 2016) is applied, and it is fixed securely, and a clasp (part 4) that mechanically interferes with the rebar bar is installed at both ends, and the fitting body (Part 1) Consists of each clasp fastener (Part No. 2) that elastically compresses the clasp of the fixed body at both ends of the fixed body to closely contact the outer diameter of the deformed rebar and mechanically interfere with the deformed bar node. Assembled mechanical one-piece mechanical release bar joint The method according to claim 1, It is installed on both ends of the fixed body, when depressed by a clasp, easily elastically deformed (see also FIG. 3), when deformed multiple ribs so as not to interfere with the rebar ribs (part 12) The grooved (rib slot, part 10) has a mechanical clasp integrated mechanical rebar joint device characterized in that it has a processed clasp part The method according to claim 1, 3 to 4th node (part 11) at the end of the release bar to be connected to the connecting device having a slightly larger inner diameter than the maximum outer diameter (node or rib) of the different types of reinforcing bars complying with the standard When inserted to coincide with the end of the clasp (part 8), the fixed body clasp jaw (site 7) is located between the nodes of the inserted rebar, the clasp-integrated mechanical release rebar fitting The method according to claim 1, When inserting the reinforcing bar to be connected to the joint, the ribs (part 12) installed along the longitudinal axis of the reinforcing bar to match the rib groove (rib slot, part 10) of the fixed body clasp A clasp-integrated mechanical release rebar fitting device characterized in that a reference scale (site 9) that can easily adjust the insertion angle of the rib is processed and displayed on the outside of the fixed body. The method according to claim 1, After the maximum outer diameter portion of the inclined portion (part 6) to a somewhat smaller outer diameter after processing the locking jaw (part 14) of the fixed body having a stage that can serve as a locking jaw, the engaging engagement When the jaw (part 13) is pressed against the processed clasp fastener, interfering parts come into contact, and multiple rib grooves (part 10) and thin clasp connections are used to avoid the interference of the load and the transmitted steel rib. Therefore, the outer diameter of the clasp is elastically reduced so that the clasp of the clasp passes through the clasp of the clasp, and after the passage, the clasp outer diameter that has been reduced by the elastic restoring force is enlarged, and the clasp of the clasp and the fixed body clasp mechanically Integrated mechanical release device for clasp, characterized in that it is integrally assembled to interfere (see also Figure 5) A fixed body (part no. 1) with clasps and fastening screw parts to fit different diameters of different reinforcing bars (parts 3 and 3') to be connected, and a clasp fastener (parts 2 and 2) ') A mechanical deformed reinforcing device with integrated clasp between different deformed rebars As shown in Fig. 8, in order to connect with the steel base structure of buildings and civil structures (angle, H and I section steel, or steel plate welded structures), the fastening screws are processed at one end of the fixed body, and the female threads are processed in the steel structure. Screw fastening, or securely fasten to the machined hole with a washer (Part No. 14) and a nut (Part No. 13), and install the clasp part of the present invention at the other end to facilitate the release steel rebar for steel structure with the clasp fastener (Part No. 2). One-piece mechanical release bar joint that can be easily connected A multi-branched fixed body that can be manufactured by adjusting the number of branches and the angle (angle A in FIG. 9) according to the needs of each rebar fitting, for example, orthogonal or 斜交 elbow type, tee and cross, 3-axis corner type , Multi-branched clasp integrated mechanical molded rebar joint that can effectively and easily connect the steel structure of reinforced concrete of complex shape by applying a fixed body such as a 3-axis center type (Part No. 15) Separate and manufacture the fixed body into a female fixed body (part No. 18) equipped with a female screw and a male fixed body (part No. 19) equipped with a male screw, and assemble the screws.The angle of deviation between the rebars to be connected (Fig. 10, each A) After rotating as much as possible, the locking nut (Part No. 20) is fixed to connect the reinforcing bars.

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