KR200448943Y1 - Clip-type press bushing for capping end part of steel wire - Google Patents

Abstract

It consists of a hydraulic cylinder, a piston, a hydraulic supply mechanism, etc. to cover the end of a strand of stranded strand with multiple strands and to press the stranded strand into the inside of the stranded strand. It relates to a device for attaching a bush to a. The device is provided with a holder having a groove formed in the center and a plurality of horizontal supports and vertical support plates for bolt-supporting the holder and the piston rod by aligning the center line with each other, and forming protrusions at the center of the tip of the piston rod. The groove in the center of the holder forms a horizontal straight groove and a groove inclined toward both ends thereof, and the push rod presses the bush in the horizontal straight groove so that the strands of multiple strands are pressed and adhered into the bush. It is a crimp fitting device on a strand of a clip-type bush.

Stranded wire, crimp crushed, piston rod, hydraulic supply mechanism

Description

Clip-type press bushing for capping end part of steel wire}

The present invention relates to a crimping bushing of the clip type to prevent the wire loosening. In particular, the present invention relates to a crimp-fitting device for use in installing anchors from the earth walls to the ground requiring support such as tunnel inner walls.

Conventionally, the strand is twisted into multiple strands such as 6 strands, especially PC strands, and then inserted into the ground, and then the end of the strand is manually inserted to prevent the strands from being unwound when the other end of the strand comes out of the surface. Tie or tie to prevent loosening.

However, if the cap is simply capped or tied to the exposed side of the strand in a conventional manner, the end of the strand may be distorted during the impact from the outside or the tension of the PC strand inserted into the ground. There was a problem that the strands of the strands were loosened, difficult to handle and not aesthetically pleasing, and also brought about obstacles to work or caused an accident during use.

Therefore, the present invention is composed of a hydraulic cylinder, a piston, a hydraulic supply mechanism, etc. to cover the end of the strand of the strand consisting of several strands in order to prevent this, and to closely adhere the strand into the inside by pressing, the push rod of the piston end It is an object of the present invention to provide a device capable of reciprocating horizontally to attach the spool to the strand.

The device of the present invention is provided with a holder having a horizontal straight groove in the center and a plurality of horizontal supports and vertical support plates for bolt-supporting the holder and the piston rod by aligning the center line with the center line, and the protrusion at the center of the tip of the piston rod. And a groove in the center of the holder to form a horizontal straight groove and a groove inclined toward both ends thereof, wherein the push rod presses the bush in the horizontal straight groove to squeeze the strand of strand into the bush. It is a crimp fitting device on a strand of a clip-type dock that allows for close contact.

According to the device of the present invention, the squeezed-stranded strand, which holds the tip of the strand in close contact by crimping it in, prevents the strand from being loosened into multiple strands and is easy to handle when installed to have a tension force in anchor construction in tunnels and other underground areas. do.

An embodiment of the present invention will be described with reference to the accompanying drawings.

Figure 1 shows the crushing compression fitting device of the present invention in one embodiment.

FIG. 2 is a diagram illustrating a crimp fitted state in a groove (in particular, a horizontal straight groove) inside the holder after the crimp crushing of FIG. 1, and FIG.

The device of the present invention is based on known general components, such as a cylinder 1, a piston 2, and a fluid supply hose 61 such as pneumatic or hydraulic pressure, as shown in FIG. These push rods 21 and 9 are faced in a piston tip push rod 21 having a 22) and a bush 9 facing the push rod 21 and a horizontal straight groove 8 therein. It consists of a holder 7 in which a stranded wire is crimped to the subsection 9 by the pressing forward of the push rod 21. The holder 7 is used so that the stranded wire can be securely fitted to the bush using the frictional force in the narrow inner horizontal straight groove 8. At this time, the horizontal support line (3) and the vertical support plate (4) for fixing so that the horizontal center line of the push rod 21 and the sub-unit (9) coincide with each other, and is not vibrated during the fitting is also the present device Is configured on.

As shown in FIG. 1, the horizontal support 3 and the vertical support plate 4 are fixed to the holder 7, the piston 2, and the piston push rod 21 without being vibrated by any external vibration or external pressure. The horizontal support and the vertical support plate is connected to each other in four places, so that the cross lock bolt (5) is fixed. In addition, the piston (2) and the holder (7) are also fastened to the bolt fastening by the cross lock bolt (5) to the vertical support plate (4), respectively.

2 and 3 are cross-sectional views of the pier where the strand is inserted.

Manually insert a pinch (9) at the tip of several strands (W), and insert it into the horizontal inclined groove (8) inside the holder (7). As shown in Figs. 2 and 3, the horizontal inclined groove inside the holder is a horizontal straight groove 8 which is relatively long in a horizontal linear form between the inclined grooves 81 formed to be inclined so as to widen the inlet of both ends. , Form. In this case, the multiple strands of the strands 9 into which the tip 9 is fitted in the horizontal straight grooves 8 are in friction with the inner wall of the horizontal straight grooves 8 due to their rough surfaces. Manually hold or clamp the portion of the stranded wire (W) outside the holder with respect to the stranded wire (W) inserted into the straight groove (8) (not shown), and then in this state, the piston push rod 21 is moved to the horizontal straight groove (8). The push rod end center projection 22 presses the center portion of the bush 9 as the piston 2 advances, thereby making a pressed mark 22 'in the center of the bush 9, thereby pushing the push rod (2). 21) and whether the center of the vice (9) is displayed whether the center is not coincident with the centering correction is possible after the work. In this case, the strand is tightly pressed into the bushing 9 in the narrow horizontal straight groove 8 of the holder, so that the strand is tightly pressed so that the strand cannot be detached even with a pulling force in the bushing. Importantly, the longer the length of the narrow horizontal straight groove 8 in the holder is formed than the sum of the lengths of the inclined grooves 81 on both sides, the more stable work is achieved. In addition, it is preferable that the inner diameter of the horizontal straight groove 8 is such that the strand W can barely pass therethrough.

However, when an external force is applied to the strand W, a vertical stress to swell to the side is applied, so that the wall surface of the groove and the strand are tightly contacted with each other within the horizontal straight groove 8 of the holder, and the frictional force is increased, thereby increasing the horizontal. Damages such as scratches and excessive wear are likely to occur on the wall surface of the straight grooves 8.

In addition, excessive frictional force causes severe scratches or the like on the wall surface of the horizontal straight groove inside the holder, making it difficult to insert the strand W into the horizontal straight groove 8, whereby the material of the holder is strongly abrasion resistance. It may be made of the same material as the cemented carbide, and in this case, it may be worked by applying lubricating oil to the wall surface of the horizontal straight groove inside the holder.

1 shows an embodiment of the device according to the present invention.

FIG. 2 is a state diagram of a holder inner groove and a strand wire crimp fastener after the compression crushing of FIG. 1; FIG.

3 is a view showing a crimped crushed strand attached to the present invention.

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1. Cylinder

2. Piston

21. Piston Push Rod

22. Push rod tip end projection

22 '. Pressed marks

3. Horizontal support

4. Vertical support plate

5. Rung Lock Bolt

61. Hydraulic Hose

7. Holder

8. Horizontal straight groove

81. Sloping Home

9. Breaking

Claims (2)

Hydraulic cylinder (1), piston (2), hydraulic supply mechanism (61), etc., to cover the end of the strand of stranded strand (W) with a plurality of strands (9) and close the stranded strand by pressing from the outside. In the device for attaching the spool to the strands by allowing the push rod 21 of the tip of the piston (2) to reciprocate horizontally, The apparatus comprises a holder (7) having a horizontal straight groove (8) in the center; The holder 7 and the piston rod 21 is composed of a plurality of horizontal support (3) and the vertical support plate (4) for bolt-supporting each other by aligning the center line, A protrusion 22 is formed at the center of the distal end of the piston rod 21, The holder 7 is formed therein with a horizontal straight groove 8 and a groove 81 inclined toward both ends thereof, The push rod 21 presses the bush 9 in the horizontal groove 8 so that the multiple strands of strands W are pressed and adhered into the bush 9. Crimping device to strand of type bush. The method of claim 1, The holder 7 is made of cemented carbide material having a wear resistance, and the length of the horizontal straight groove 8 therein is formed to be longer than the sum of the lengths of the inclined grooves 81 at both ends thereof. Press-fit device on the strand of the clip-type bush.

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