KR20110016338A

KR20110016338A - Apparatus for connecting steel wire

Info

Publication number: KR20110016338A
Application number: KR1020090073996A
Authority: KR
Inventors: 김성희; 김용만
Original assignee: 김성희; 김용만
Priority date: 2009-08-11
Filing date: 2009-08-11
Publication date: 2011-02-17

Abstract

PURPOSE: A strand connection device can be applied to construction requiring a strong tensile force because a plurality of strands are connected at the same time. CONSTITUTION: A strand connection device comprises a disk-shaped connection body(33) and a wedge assembly(15). The connection body has a plurality of holes(33a,33b) which strands pass through in the longitudinal direction. The wedge assembly is accommodated in the holes, covering the ends of the strands passing through the holes, and stretches the strands extended to the outside of the holes away from the connection body. The wedge assembly is tightened in the holes so as to fix the strands.

Description

Applicator for connecting steel wire {Apparatus for connecting steel wire}

The present invention relates to a stranded wire connecting device.

A stranded wire, which is almost essential for various civil and building works, is a line made of twisted steel wires, and has excellent tensile ability, such as fixing various structures or buildings to the ground or by excavation. It is necessarily used for the ground anchor method to prevent the collapse of the formed slope or vertical plane.

The strand may be cut to an appropriate length as necessary, or may be used by connecting a plurality of strands in the longitudinal direction when the length is short. There is a type of stranded wire connecting device for connecting the stranded wire of the type shown in FIG.

1 and 2 are diagrams for explaining the configuration and operation principle of a conventional stranded wire connection device.

As shown in the drawing, the conventional stranded wire connecting device 11 has a form of a pipe having both ends open, and a connecting pipe 13 having a female thread 13a formed on an inner circumferential surface thereof, and the connecting pipe 13. Two wedge assemblies 15 each installed into the connection pipe at both ends of the wedge assembly, and pressure holders 17 screwed to the connection pipes 13 while receiving the respective wedge assemblies 15. .

The wedge assembly (15) consists of three wedge pieces (15a) divided at an angle of 120 degrees in the longitudinal direction and remains assembled by an O-ring (15e). The o-ring 15e is inserted into a groove 15c formed in the outer surface of each wedge piece 15a to collect the wedge piece 15a inward. The o-ring 15e may have an elastic force and may be stretched to some extent so that, for example, the wedge piece 15a may be opened and the strand A may pass therein.

A toothed portion 15d is formed on the inner surface of each of the wedge pieces 15a. The toothed portion 15d tightly tightens the outer circumferential surface of the wrapped strand A, thereby preventing the strand from slipping out of the wedge assembly 15. Moreover, the inclined surface 15b is provided in the outer surface of each said wedge piece 15a. The inclined surface 15b is formed such that the outer circumferential surface of the wedge assembly 15 is tapered to one side.

The pressure holder 17 takes the form of a hollow pipe, and screwes the wedge assembly 15 to the connecting pipe 13 in a state in which each wedge assembly 15 is accommodated therein. To tighten the wedge assembly 15 to the strand A.

To this end, an inner circumferential surface of the pressing holder 17 is provided with a pressing surface 17c for interviewing the inclined surface 15b. The pressing surface 17c presses the inclined surface 15b of each wedge piece 15a in the direction of the strand A as the pressing holder 17 enters the inside of the connecting pipe 13.

In addition, the outer circumferential surface of the pressure holder 17 is provided with a male screw thread 17a and a fastening portion 17b. The male screw acid 17a is a portion that couples to the female screw mountain 13a of the connecting pipe 13. In addition, the fastening portion 17b is a clamping tool for clamping the pressure holder 17, such as a spanner or a pipe wrench.

However, the above-described conventional stranded wire connecting device 11 has a limitation that only two stranded wires A can be connected by one connecting device 11. For example, it is not possible to connect several strands of stranded wires with one connection device 11 at a time. In this way, one connection device is required to connect a single stranded wire, so the connection efficiency is low compared to the cost.

In addition, the connection device 11 has a disadvantage in that its structure is complicated and in particular, the pressure holder has to be screwed to the connecting pipe 13, which is cumbersome in construction and requires a separate tool for screwing.

The present invention has been made in order to solve the above problems, the structure is very simple and easy to install, and in particular can be connected to a plurality of strands at the same time to provide a strand wire connecting device that can be used critically for the construction requiring a strong tensile force There is a purpose.

In order to achieve the above object, the present invention, the connection body is formed with a plurality of holes for passing the strand in the longitudinal direction; A plurality of wedge assemblies are accommodated in the hole while wrapping the end of the strand wire passed through the hole, and the strand wire extending outward from the hole is tightened in a direction away from the connection body to tighten the strand wire. Characterized in that.

In addition, the connecting body takes the form of a disk of a predetermined thickness, the hole is a first fastening hole that the diameter narrows toward the opposite side from one side of the connecting body, and the diameter toward the opposite side from the one side It is characterized by consisting of a second fastening hole widening.

In addition, the number of the first fastening hole and the second fastening hole is equal to each other, the inner peripheral surface is characterized in that the pressing surface which is in close contact with the outer peripheral surface of the wedge assembly and tighten the wedge assembly.

The stranded wire connecting device of the present invention made as described above has the advantage that the structure is very simple, the construction is simple, and in particular, it is possible to connect several strands of stranded wire at the same time, so that it can be critically used for the construction where strong tensile force is required.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

The same reference numerals as the above reference numerals denote the same members having the same function.

3 is an exploded perspective view showing a portion of a strand wire connecting apparatus according to an embodiment of the present invention, Figure 4 is a cross-sectional view taken along the line IV-IV of FIG.

As shown in the drawing, the stranded wire connecting device 31 according to the present embodiment has a shape of a disk and has a connecting body 33 having a plurality of first and second fastening holes 33a and 33b, and the connecting body ( 33, a plurality of wedge assemblies 15 for clamping the strand A in a state in which the strand A is inserted into the selected first fastening hole 33a or the second fastening hole 33b in a state where the strand A is wrapped. Include. The wedge assembly 15 may be fitted to all fastening holes or only selected fastening holes depending on the number of strands to be connected.

As shown in FIG. 7, the connection body 33 is one connection port for fixing the plurality of strands A to be connected in the longitudinal direction while passing therein. One connecting body 33 is required to connect two stranded wires A, and two connecting bodies 33 are required to connect three stranded wires A in turn in the longitudinal direction.

The connecting body 33 takes the form of a disk having a constant thickness. The thickness or diameter of the connection body 33 may vary depending on the case. The connecting body 33 may take other forms as long as it has the first and second fastening holes 33a and 33b in addition to the disk. For example, it may have the form of a square block or a square plate.

On the other hand, the inner diameter of the first fastening hole 33a and the second fastening hole 33b is a through hole that becomes smaller or larger toward one side as shown in FIG. 4. That is, the first fastening hole 33a becomes narrower from one side of the connection body 33 to the other side, and the second fastening hole 33b becomes wider from one side of the connection body 33 to the other side. .

In addition, the maximum diameter D1 of the first fastening hole 33a is the same as the maximum diameter D1 of the second fastening hole 33b, and the minimum diameter D2 of the first fastening hole 33a is the second fastening. It is equal to the minimum diameter D2 of the hole 33b.

In addition, the number of the first fastening holes 33a and the second fastening holes 33b is the same. In the case of Fig. 3, four first fastening holes 33a and four second fastening holes 33b are formed. However, the number of the first and second fastening holes 33a and 33b may vary depending on the case. In the connection body 33 shown in Fig. 8, five first and second fastening holes 33a and 33b are applied.

The inner circumferential surfaces of the first and second fastening holes 33a and 33b are in close contact with the inclined surface 15b of the wedge assembly 15, and as shown in FIG. 6, the wedge assembly is pulled when the strand A is pulled in the direction of arrow P1. It is the pressing surface 33c which clamps 15 in the arrow f1 direction.

In addition, the first fastening hole 33a and the second fastening hole 33b are symmetrically disposed within the limits not overlapped with respect to the center of the connection body 33.

5 and 6 are views for explaining the principle of operation of the stranded wire connecting apparatus according to an embodiment of the present invention.

Referring to the drawings, the strand A1 is fitted into two first fastening holes 33a of the four first fastening holes 33a, and two second fastening holes of the four second fastening holes 33b. The strand A2 is inserted in the 33b. The strand A1 and the strand A2 are connected to each other via the connecting body 33 as wires extending in opposite directions with the connecting body 33 interposed therebetween.

In addition, although two strands of strands are applied to FIG. 5, three strands or four strands of strands A1 and A2 are applied in the case of a connection to bear a greater tensile force.

The wedge assembly 15 described above is used to fix the strands A1 and A2 passing through the respective fastening holes 33a and 33b to the respective fastening holes 33a and 33b. The wedge assembly 15 wraps the ends of the strands A1 and A2, and stretches the strands A1 and A2 in the directions of arrows P1 and P2, respectively, so that the wedge assembly 15 enters the inside of the fastening holes 33a and 33b. A1, A2) Tighten it securely.

7 is a partially exploded perspective view showing an example of use of the wire strand connecting apparatus according to an embodiment of the present invention.

Referring to the drawings, with two strands of stranded wire fixed to one stranded wire connecting device 31, extending in the opposite direction with the connecting body 33 therebetween, the extended end is fixed to the other connecting device 31. It can be seen. By fixing both ends of the stranded wire to the stranded wire connecting device 31 as described above, a plurality of stranded wires can be connected in the longitudinal direction to obtain a tension body having a desired length.

8 is a cutaway perspective view illustrating another example of a connection body applicable to a strand wire connecting apparatus according to an embodiment of the present invention.

Referring to the drawings, it can be seen that the five first fastening holes 33a and the second fastening holes 33b are formed in the connection body 33, respectively. The first and second fastening holes 33a and 33b are symmetrical with respect to the center of the connection body 33. Shapes and functions of the first and second fastening holes 33a and 33b are as described with reference to FIG. 3.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

3 is an exploded perspective view showing a part of the wire connecting apparatus according to an embodiment of the present invention.

4 is a cross-sectional view taken along the line IV-IV of FIG. 3.

7 is a diagram illustrating an example of using a stranded wire connecting apparatus according to an embodiment of the present invention.

11: Stranded wire connection device 13: Connection pipe

13a: female thread 15: wedge assembly

15a: wedge 15b: slope

15c: Groove 15d: Tooth

15e: O-ring 17: Pressure holder

17a: Male thread 17b: Fastening part

17c: Pressing surface 31: Stranded wire connecting device

33: connection body 33a: first fastening hole

33b: 2nd fastening hole 33c: Pressing surface

Claims

A connecting body having a plurality of holes formed therein to allow the strand to pass in the longitudinal direction;

A plurality of wedge assemblies are accommodated in the hole while wrapping the end of the strand wire passed through the hole, and the strand wire extending outward from the hole is tightened in a direction away from the connection body to tighten the strand wire. A stranded wire connecting device, characterized in that.

The method of claim 1,

The connecting body takes the form of a disk of a certain thickness,

The hole comprises a first fastening hole whose diameter narrows from one side of the connecting body toward the opposite side, and a second fastening hole having a diameter widening from the one side of the connecting body toward the opposite side thereof. .

3. The method of claim 2,

The number of the first fastening hole and the second fastening hole is equal to each other, the wire connecting device, characterized in that the inner peripheral surface is formed in close contact with the outer peripheral surface of the wedge assembly, the pressing surface for tightening the wedge assembly.