KR101151552B1

KR101151552B1 - Apparatus of Forming Bulbed Cable

Info

Publication number: KR101151552B1
Application number: KR1020090115136A
Authority: KR
Inventors: 이민호; 심한인
Original assignee: 이민호; 주식회사 한돌
Priority date: 2009-11-26
Filing date: 2009-11-26
Publication date: 2012-05-30
Also published as: KR20110058372A

Abstract

The present invention relates to a bulb-type cable forming apparatus, the fixing portion for fixing the PC stranded wire on one side, the moving portion for fixing the PC stranded wire on the other side, the moving part is advanced to the fixed portion to press the bulb by the PC stranded wire Consists of a hydraulic cylinder and a control unit to form a plurality of bulbs at the same time in the PC strand by an automated process, and a plurality of gear teeth in the fixing part wedge for fixing the PC strand, the same direction as the direction of pressing the PC strand It was formed at a predetermined angle so that the slip phenomenon does not occur when the PC strand is pressed on both sides.

Cable Bolt, PC Strand, Light Bulb Cable, Automation, Slip

Description

Apparatus of Forming Bulbed Cable

The present invention relates to a bulb-type cable (Bulbed Cable) forming apparatus, and more particularly to a bulb-type cable forming apparatus capable of forming a plurality of bulbs at the same time the PC strand by an automated process.

In addition, the present invention relates to a bulb-type cable forming apparatus in which a plurality of gear teeth (teeths) are formed on a fixing wedge for fixing a PC strand, so that a slip phenomenon does not occur when the PC strand is pressed on both sides.

In general, when the ground condition is poor or the tunnel cross section is large, earth anchors or cable bolts are used to ensure stability.

The cable bolt is a reinforcement inserting a stranded wire into the cement grouted drilling hole, the length can be constructed from 4m to 40m. Prestressed, front-bonding is used primarily in mines, and the original cable bolt is a flexible tendon that inserts and grouts strands into perforated holes in the ground. Cable bolts are installed after drilling at regular intervals for reinforcement or support of excavation ground in underground spaces or surface excavation, and have one or more strands to increase tensile strength because they are smaller in diameter than reinforcement using steel bars such as reinforcing bars. It is not difficult to insert.

The cable bolt may be used in combination with a plate, strap, mesh, etc. to restrain the excavation surface. In addition, the cable bolt may be used in combination with shotcrete, deformed reinforced rock bolt, and the like. The resistance of the cable bolt is transmitted to the rock through the grout. Meanwhile, grout is composed of portland cement and water, and development of alternative materials, such as grout, such as resin, glass fiber, carbon fiber, aramid fiber, etc., has been in progress.

The cable bolts support the rock with a combination of reinforcement and stiffening functions. As a reinforcing function, the cable bolts prevent weakness and slippage of the weak surface in the rock, and if the rough joints or cracks are not separated normally, the effect of these discontinuities can be minimized. Continuous rock is almost always stronger than discrete rock. Thus, the cable bolts exhibit the inherent strength of the discrete rock.

In general, the cable bolt is a front adhesive type without prestressing, there are various things such as attaching several devices to the cable and twisting the stranded wire as shown in Table 1 to increase the fixing force of the cable and grout material.

The cable bolts must be secured in the upward installation until the injection material is cured. Falling cable bolts in the ceiling can seriously injure workers. The main considerations in the selection of end fasteners are workability, economics, drilling hole size, bolt insertion method and injection material injection method. Longer cable bolts require more rigid fixings. To support the rock, the cable bolt heads need plates and fixtures. The head fixing device serves to transfer the bolt load to the plate.

On the other hand, conventionally, PC stranded wire having excellent tensile strength was mainly used as a cable for cable bolt. PC strand is installed in the head by connecting plate and fixing device. Resistance is transmitted to rock through grout. Conventionally, in order to further increase the frictional force of the PC strands, nodes or protrusions were formed in the middle of the PC strands (see Table 1).

Republic of Korea Patent Registration 10-0820571 (Registration Date: 2008.04.01) relates to the production platform for forming the strand wire bulb, as shown in Fig. 1 and 2, the first fixing part 10, the first fixing the strand wire from the top It is composed of a secondary fixing portion 20 for fixing the strand (W) under the vehicle fixing portion, the cylinder device 30 and the node manufacturing frame 40 connected to the secondary fixing portion 20, The primary and secondary fixing portions 10 and 20 for fixing the strand W are manually fixed by the primary and secondary hand levers 11 and 21.

That is, in the conventional steel wire bulb forming work table, when the first hand lever 11 coupled to the fixing part case 26 is rotated in the direction of the first fixing part 10, the first hand The connecting device fixture 13 of the left and right middle parts of the lever 11 and the connecting device 14 assembled inside the fixing part case 26 are bolted together and moved together in the direction of the first fixing part 10. The first stopper 16 is moved in the direction of the fixing support 19 through the slit groove 17 through the first stopper fixture 15 that is bolted to the connecting device 14. 16) pushes the first strand wire fixture 18, which is in contact with the fixed support (19). In addition, the primary twisted line fixture 18 moves along the inclination angle of the fixed support 19, thereby joining each other to fix and support the provided stranded wire W.

In addition, after the stranded wire (W) is fixed, if the second hand lever 21 located in the second fixing part 20 is manually pushed in the direction of the hydraulic cylinder 31, the second hand lever ( 21 and bolted secondary stopper 25 also moves together, the secondary strand wire fixture 24 is connected to the secondary stopper 25 adjacent to each other in accordance with the inclination angle of the pusher (23). Joining is to support the strand (W) is fixed, and the joints frame support for producing the shape of the strand (W) 41 is fixed in the inner space of the fixing part case 26, and then fixed The joint manufacturing frame 40, which is separately manufactured and prepared to be attached and detached freely between the joint manufacturing frame support 41, is inserted into the joint space for supporting the joint manufacturing frame 41.

However, in the conventional production line for forming a stranded wire bulb having the above configuration, since the stranded wire W is manually fixed using the first and second hand levers 11 and 21, the stranded wire W is firmly fixed. Not to push the strand (W) to the hydraulic cylinder 31 in the subsequent process there was a problem that the slip (Slip) occurs. Furthermore, the first and second strand strand fixtures 18 and 24, which bite and fix the strand strand W, are configured in a flat plane shape, thereby acting as a cause to further promote the slip phenomenon.

In addition, the conventional production line for forming the strand wire bulb has a problem that not only work efficiency is reduced but also takes a long time because the bulb is formed in the strand wire one at a time.

In addition, there is a problem that the mechanical device for manually fixing the strand (W) is complicated, manpower and maintenance costs are high.

In order to solve the above problems, the present invention is to provide a bulb-type cable forming apparatus that can form a plurality of bulbs at the same time the PC strand by an automated process.

In addition, another technical problem to be achieved by the present invention is to form a plurality of gear teeth (tooth) in the fixing portion wedge for fixing the PC strands to prevent the slip (Slip) phenomenon when pressing the PC strands from both sides (bulb) cable To present a forming apparatus.

In addition, another technical problem to be achieved by the present invention is to form a plurality of gear teeth in the fixing part wedge for fixing the PC stranded wire, but formed in the same direction as the direction of pressing the PC stranded wire on both sides of the bulb-type cable To present a forming apparatus.

In addition, another technical problem to be achieved by the present invention is to form a plurality of gear teeth per 8cm 70 ~ 90 (preferably 80) to the fixing portion of the wedge but at a predetermined angle in the direction of pressing the PC strand on both sides The present invention provides a bulb-shaped cable forming device.

As a means for solving the above-described technical problem, the bulb-type cable forming apparatus according to an aspect of the present invention, is fixed to one side of the upper end of the inside of the body, the pair of fixing wedges detachably by the forward and backward operations A fixed wedge block having a wedge insertion groove having a tapered shape larger than the other side of one side into which the fixed part wedge enters to accommodate the PC twisted line with the pair of fixed part wedges; Located in the upper end portion of the inside of the body, the wedge insertion groove having a tapered shape of the size of one side into which the moving portion wedge enters larger than the other side in order to detachably receive a pair of moving portion wedges by forward and backward movements. A moving wedge block provided with a pair of moving wedges to fix the PC strand; A first hydraulic cylinder for hydraulically advancing and retracting the fixed part wedge relative to the fixed wedge block; A second hydraulic cylinder for hydraulically advancing and retracting the movable wedge with respect to the movable wedge block; A third hydraulic cylinder for hydraulically advancing and retracting the movable wedge block; And operating the first and second hydraulic cylinders to open the fixing wedges and the moving wedges in the fixed wedge block and the moving wedge block, respectively, by reversing each other and between the fixed wedges and the moving wedges. When the fixed portion of the wedge and the moving portion of the wedge to advance the fixed wedge block and the movable wedge block to fix the PC strands, the third hydraulic cylinder is operated to move the moving wedge block toward the fixed wedge block A bulb is formed in the PC strand, and after the bulb formation is completed, the first and second hydraulic cylinders are operated to reverse the fixing wedge and the moving wedge from the fixed wedge block and the moving wedge block, respectively. And a control unit for automatically controlling the above operations,
The fixed part wedge and the moving part wedge are each formed with a plurality of gear teeth on the surface in contact with the PC strand, the tapered shape is formed on the opposite side, the plurality of gear teeth the fixed part wedge and the moving part wedge Each of the fixed wedge block and the moving wedge block is formed to be inclined at a predetermined angle in the direction opposite to the forward direction, characterized in that formed 70 to 90 per 8cm length.

In addition, the bulb-type cable forming device according to another aspect of the present invention, a plurality of bulb cable forming device unit repeatedly arranged at a predetermined interval to form a plurality of bulbs in the PC strand; And a control unit connected to each of the plurality of bulb cable forming units and automatically controlling the operation of each bulb cable forming apparatus simultaneously or sequentially to form the plurality of bulbs in the PC strand by an automated process. ,
Each of the bulb cable forming unit is fixedly positioned at one upper end of the inside of the body, and the size of one side into which the fixing part wedge enters in order to detachably receive a pair of fixing part wedges by the forward and backward operations is larger than the other side. A fixed wedge block having a wedge insertion groove having a tapered shape to fix the PC twisted wire with the pair of fixed wedges; Located in the upper end portion of the inside of the body, the wedge insertion groove having a tapered shape of the size of one side into which the moving portion wedge enters larger than the other side in order to detachably receive a pair of moving portion wedges by forward and backward movements. A moving wedge block provided with a pair of moving wedges to fix the PC strand; A first hydraulic cylinder for hydraulically advancing and retracting the fixed part wedge relative to the fixed wedge block; A second hydraulic cylinder for hydraulically advancing and retracting the movable wedge with respect to the movable wedge block; It comprises a third hydraulic cylinder for hydraulically advancing and retracting the moving wedge block,
The fixed part wedge and the moving part wedge are each formed with a plurality of gear teeth on the surface in contact with the PC strand, the tapered shape is formed on the opposite side, the plurality of gear teeth the fixed part wedge and the moving part wedge Each of the fixed wedge block and the moving wedge block is formed to be inclined at a predetermined angle in the direction opposite to the forward direction is formed 70 to 90 per 8cm length,
The one control unit operates the first and second hydraulic cylinders to the respective bulb cable forming device parts, and opens the fixed part wedges and the moving part wedges in the fixed wedge block and the moving wedge block, respectively. When the PC twisted line is mounted between each of the fixing part wedge and the moving wedge, the fixing wedge and the moving wedge are respectively advanced to fix the PC wring wire to the fixed wedge block and the moving wedge block, and the third hydraulic cylinder To move the moving wedge block toward the fixed wedge block to form a bulb in the PC strand, and after the bulb formation is completed, operate the first and second hydraulic cylinders to fix the fixed wedge block and the moving wedge block. Automatically control the above operations simultaneously or sequentially so that the fixed part wedge and the moving part wedge open in reverse And that is characterized.

In addition, the bulb-type cable forming device, a plurality of wedge detection sensor for detecting the forward and backward movement of the fixing portion wedge and the moving portion wedge to transmit a signal detected by the control unit; It further comprises a moving wedge block detection sensor for detecting the forward and backward movement of the moving wedge block to transmit a signal detected by the control unit.

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According to the present invention, a plurality of bulbs may be simultaneously formed on the PC strand by an automated process, and a plurality of gears may be formed at a predetermined angle in the same direction as the direction of pressing the PC strand on the fixing part wedge for fixing the PC strand. By slipping the PC strands on both sides, slippage does not occur.
In addition, an automated process can form a plurality of strand wire nodes at once, thereby improving work efficiency and reducing manpower and maintenance costs.

In addition, a cable having a plurality of bulbs formed in the PC stranded wire has the effect of increasing the resistance coefficient with the grout material to be filled in the drilling hole to increase the pull resistance, and serves to reinforce the ground. Therefore, when applied to various civil works such as tunnel construction, slope reinforcement construction, underground excavation construction, it is possible to further improve the bearing capacity of the wall.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Bulb Cable Of forming device Example

3 is a perspective view of the bulb-type cable forming apparatus according to a preferred embodiment of the present invention, Figure 6 is a block diagram of the fixing portion wedge and the moving portion wedge (113, 125).

As shown in Figure 3, the bulb-type cable forming apparatus 100 according to the present invention is largely fixed portion 110 for fixing the PC strands on one side, moving portion 120 for fixing the PC strands on the other side, before and after It is divided into a hydraulic cylinder (141, 145) and a hydraulic unit (150).

The fixing part 110 is located at one upper end of the inside of the body 101, the fixing wedge block 111, fixing wedge 113, fixing hydraulic cylinder (first hydraulic cylinder) 115, fixing wedge The contact plate 130 is provided.

Here, the fixed wedge block 111 is a device for fixing the PC stranded wire with a pair of fixing portion wedge 113, the wedge insertion to detachably accommodate the pair of fixing portion wedge 113 by the forward and backward operations. The groove 112 is formed in the upper part. At this time, the wedge insertion groove 112 has a tapered shape in which the size of one side into which the fixing portion wedge 113 enters is larger than the other side.

As shown in FIG. 6, the pair of fixing wedges 113 has a plurality of gear teeth formed at one side (a surface in contact with the PC strand) at right angles with the top and bottom, and the other side of the opposite side. Are each formed in a tapered shape that narrows from the bottom toward the top. The plurality of gear teeth are opposed to the direction in which the fixing portion wedge 113 is advanced to the wedge insertion groove 112 of the fixing wedge block 111 so that slip does not occur when the PC strand is pressed on both sides. It is formed to incline in the direction. At this time, according to the test results of the plurality of gear teeth, it was found that it is best to form about 70 to 90, preferably about 80 per 8 cm length. In other words, when 80 gears are formed, the test results show that the slippage does not occur at all because the adhesion is excellent without almost scratching the PC strand.

The fixed hydraulic cylinder 115 is fixed to the lower portion of the fixed wedge block 111, and serves to advance or reverse the pair of fixed portion wedge 113 by the hydraulic pressure. That is, in the wedge insertion groove 112 of the fixed wedge block 111, the pair of fixing wedges 113 are reversed (retracted) and opened, and the PC strand is connected between the pair of fixing wedges 113. After installation, the pair of fixing portion wedges 113 are advanced to the wedge insertion grooves 112 of the fixing wedge block 111 to press-fix the PC strand.

The fixed part wedge contact plate 130 is coupled to the fixed part wedge 113 and the fixed part hydraulic cylinder 115 from the right side of the fixed wedge block 111 based on the drawing, the fixed part hydraulic cylinder ( 115 to allow the fixing portion wedge 113 to move.

The moving part 120 is located at the other upper end of the inside of the body 101, the moving wedge block 121, the moving part wedge 123, the moving part hydraulic cylinder (second hydraulic cylinder) 125, the moving part The wedge contact plate 131 is provided.

Here, the movable wedge block 121 is a device for fixing the PC stranded wire with a pair of moving wedge 123, similar to the fixed wedge block 111, the forward and backward movement of the pair of moving wedge 123 The wedge insertion groove 122 is detachably formed in the upper portion to be detachably accommodated. At this time, the wedge insertion groove 122 has a tapered shape in which the size of one side into which the movable wedge 123 enters is larger than the other side.

The pair of moving wedges 123 is formed with a plurality of gear teeth on one side (surface in contact with the PC strand) that is perpendicular to the top and bottom surfaces, such as the fixing part wedge 113, and the opposite side The other side is formed in a tapered shape that narrows from the bottom to the top. The plurality of gear teeth are opposed to the direction in which the moving part wedge 123 moves forward into the wedge insertion groove 122 of the moving wedge block 121 in order to prevent slippage when pressing the PC strands from both sides. It is formed so that it may incline in a direction (refer FIG. 6). At this time, the plurality of gear teeth, like the fixing portion wedge 113, it is preferable to form about 70 to 90, preferably about 80 per 8 cm length.

The movable hydraulic cylinder 125 is fixed to the lower portion of the movable wedge block 121, and serves to advance or reverse the pair of movable wedges 123 by hydraulic pressure. That is, the pair of moving wedges 123 are moved backwards (retreat) in the wedge insertion groove 122 of the moving wedge block 121, and the PC strand is connected between the pair of moving wedges 123. After installation, the pair of moving wedges 123 are advanced to the wedge insertion grooves 122 of the moving wedge block 121 to press-fix the PC strand.

The moving part wedge contact plate 131 is coupled to the moving part wedge 123 and the moving part hydraulic cylinder 125 at the left side of the moving wedge block 121 based on the drawing, and the moving part hydraulic cylinder ( 125 to allow the moving part wedge 123 to move.

The forward and backward hydraulic cylinders 141 and 145 serve to move the moving wedge block 121 forward and backward by the forward and backward hydraulic pressure supplied from the hydraulic unit 150. At this time, the forward and backward movements of the movable wedge block 121 is moved along the guide groove 103 formed on the side of the body 101. At this time, the guide groove 103 is preferably formed in two so that the movable wedge block 121 can move safely without vibration.

The hydraulic unit 150 is advanced through the forward hydraulic line 151 and the reverse hydraulic line 153 to the fixed hydraulic cylinder 115, the moving hydraulic cylinder 125, the forward and backward hydraulic cylinders (141, 145). And forward hydraulic pressure.

The bulb-type cable forming apparatus of the present invention having the above configuration is fixed at the fixed wedge block 111 and the moving wedge block 121 by the fixed floating hydraulic cylinder 115 and the moving floating hydraulic cylinder 125 at an initial operation. The pair of fixing part wedge 113 and the moving part wedge 123 are opened backward, respectively, and a PC strand is installed between each of the fixing part wedge 113 and the moving part wedge 123. Thereafter, the fixing wedge 113 and the moving wedge 123 are advanced to fix the PC steel wire to the fixed wedge block 111 and the moving wedge block 121, and then the front and rear hydraulic cylinders ( When the moving wedge block 121 is advanced toward the fixed wedge block 111 by the pressures 141 and 145 to press the PC strand, a bulb is formed in the middle of the PC strand. After the bulb formation is completed, the fixed part hydraulic cylinder 115 and the moving part hydraulic cylinder 125 are operated to fix the fixed part wedge 113 and the moving part wedge in the fixed wedge block 111 and the moving wedge block 121. Open each of the 123 backwards and then take out the PC strand formed with the bulb.

The present invention includes a controller (not shown) programmed to make this series of steps into an automated system. The control unit automatically controls forward and backward operations of the fixed hydraulic cylinder 115, the mobile hydraulic cylinder 125, and the forward and backward hydraulic cylinders 141 and 145 so that the above operations can be performed sequentially. do.

To this end, although not shown in the drawing in the present invention, a plurality of wedge detection sensors for detecting the forward and backward movement of the fixing portion wedge 113 and the moving portion wedge 123 to transmit the signal detected by the control unit, respectively And, it further comprises a moving wedge block detection sensor for detecting the forward and backward motion of the moving wedge block 121 to transmit a signal detected by the control unit.

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Another embodiment of the bulb-type cable forming apparatus

4 and 5 are a perspective view and a plan view of a bulb type cable forming apparatus according to another preferred embodiment of the present invention.

In the present invention, a plurality of bulb-type cable forming apparatus as shown in Figure 4, it is possible to form a plurality of bulbs in the PC strands 160 by an automated process at the same time.

Each of the bulb-type cable forming device 100 is located in one upper end of the inside of the body 101, as shown in Figure 3 fixed wedge block 111 for fixing the PC strand wire 160 with a pair of fixing wedges 113 And a moving wedge block 121 positioned at the other upper end of the inside of the body 101 and fixing the PC twisted line 160 to a pair of moving wedges 123, and the fixed wedge block 111 and moving. A fixed hydraulic cylinder (first hydraulic cylinder: 115) and a mobile hydraulic cylinder (second hydraulic cylinder: 125) for advancing and retracting the wedges (113, 123) hydraulically with respect to the wedge block (121); Forward and backward hydraulic cylinders (third hydraulic cylinders 141 and 145) for advancing and retracting the block 121 hydraulically are provided, respectively.

In addition, the present invention includes a control unit for controlling the plurality of bulb-type cable forming apparatus 100 in an automated process. The one control unit operates the first hydraulic cylinder 115 and the second hydraulic cylinder 125 installed in each of the plurality of bulb-type cable forming apparatus 100 by the fixed wedge block 111 and the moving wedge block ( In step 121, the wedges 113 and 123 are reversed and opened, respectively, and when the PC strands 160 are mounted between the pair of wedges 113 and 123, the wedges 113 and 123 are advanced, respectively, to fix the wedge blocks 111 and The PC stranded wire 160 is fixed to the movable wedge block 121, and the third hydraulic cylinders 141 and 145 are operated to move the movable wedge block 121 toward the fixed wedge block 111 so that the PC stranded wire ( The bulb 161 is formed in the 160 and the fixed wedge block 111 and the movable wedge block 121 are operated by operating the first hydraulic cylinder 115 and the second hydraulic cylinder 125 after completion of the bulb formation. In order to open the wedge (113,123) by reversing each Automatic operation control in sequence by the program to form a plurality of bulbs (161) are used in the PC strand 160.

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At this time, since the forward movement distance of the moving wedge block 121 is the same every time with respect to the plurality of bulb-type cable forming device 100, the shape and size of forming a plurality of bulbs in the PC strand (160) Will be the same. Since both sides of the PC strand wire 160 are fixed by the fixing part wedge 113 and the moving part wedge 123, the force that is pressed by the advancement of the moving wedge block 121 is applied to the line of the PC twisted wire 160. The bulb 161 is formed in the middle portion of the PC strand wire 160 that is most received in the middle portion and thus twisted into several strands. In particular, since the plurality of gear teeth are formed in the fixing part wedge 113 and the moving part wedge 123 as described with reference to FIG. 6, the PC strand wire 160 may be tightly fixed to prevent the occurrence of slip.

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As described above, in the present invention, since a plurality of bulb-type cable forming apparatus 100 is configured as shown in FIG. 4 and slip is prevented, a plurality of bulbs may be simultaneously applied to the PC stranded wire 160 by an automated process. It can form sequentially.

PC strand (160) with bulb

FIG. 7 is a perspective view illustrating a PC stranded wire 160 in which a bulb is formed.

Referring to FIG. 7, the bulb 161 formed in the PC strand wire 160 may be pressed by both sides of the PC strand wire 160 fixed between the fixed wedge block 111 and the movable wedge block 121. The steel wire of the PC strand wire 160 is formed while being bent out by the pressing force. Therefore, the diameter of the bulb 161 is larger than the diameter of the PC strand (160), the hollow space is formed inside the bulb 161.

As described above, the bulb-type cable forming apparatus of the present invention can form a plurality of bulbs at the same time the PC strand by an automated process, by forming a plurality of gear teeth at a predetermined angle to the fixing portion wedge for fixing the PC strand wire PC stranded wire By suppressing the slip phenomenon when pressing both sides, it is possible to solve the technical problem of the present invention.

In addition, the bulb-shaped cable forming apparatus according to the above description may be repeatedly arranged at predetermined intervals to form a bulb-type cable forming system or a work-line for forming a bulb-type cable, and through this, a plurality of bulbs may be simultaneously or sequentially formed. have.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present invention without departing from the spirit or scope of the present invention as defined by the appended claims. It will be appreciated that such modifications and variations are intended to fall within the scope of the following claims.

Bulb-type cable forming apparatus of the present invention to reinforce the ground and slope to prevent the cutting and collapse of slopes or soft ground when civil works of industrial complexes such as residential complexes, industrial complexes or railways, highways, tunnels It can be applied to the production of stiffeners.

1 and 2 is a configuration and operation state diagram of the production platform for forming a conventional strand wire bulb

3 is a perspective view of a bulb-type cable forming apparatus according to a preferred embodiment of the present invention

Figure 4 is a perspective view of the bulb-type cable forming apparatus according to another embodiment of the present invention

5 is a plan view of the bulb-type cable forming apparatus according to another embodiment of the present invention

6 is a configuration diagram of the fixing part wedge and the moving part wedge

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7 is a perspective view showing a state of the PC strand formed with a bulb

[Brief description of symbols for the main parts of the drawings]

100: bulb type cable forming apparatus 101: the body

103: guide groove 110: fixed portion

111: fixed wedge block 112: wedge insertion groove

113: fixing part wedge

115: fixed part hydraulic cylinder (1st hydraulic cylinder) 120: moving part

121: moving wedge block 122: wedge insertion groove

123: moving part wedge

125: moving part hydraulic cylinder (second hydraulic cylinder) 130: fixed part wedge contact plate

131: moving part wedge contact plate

140: moving wedge block hydraulic cylinder (third hydraulic cylinder)

141: front and rear vacuum cylinder 143: distal end

145: front and rear vacuum cylinder 147: tip end

150: hydraulic unit 151: forward hydraulic line

153: reverse hydraulic line 160: cable (PC strand)

161 bulb

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Claims

In the bulb type cable forming device,

The wedge insertion groove having a taper shape having a larger taper shape than the other side is fixed to one side of the upper end of the body, the size of one side into which the fixing part wedge enters to detachably receive a pair of fixing part wedges by forward and backward motions. A fixed wedge block for fixing the PC twisted wire with the pair of fixed wedges;

Located in the upper end portion of the inside of the body, the wedge insertion groove having a tapered shape of the size of one side into which the moving portion wedge enters larger than the other side in order to detachably receive a pair of moving portion wedges by forward and backward movements. A moving wedge block provided with a pair of moving wedges to fix the PC strand;

A first hydraulic cylinder for hydraulically advancing and retracting the fixed part wedge relative to the fixed wedge block;

A second hydraulic cylinder for hydraulically advancing and retracting the movable wedge with respect to the movable wedge block;

A third hydraulic cylinder for hydraulically advancing and retracting the movable wedge block; And

The first and second hydraulic cylinders are operated to open the fixed wedges and the moving wedges in the fixed wedge block and the moving wedge block, respectively, and open, and the PC strand is connected between each of the fixed wedges and the moving wedges. When mounted, the fixing wedge and the moving wedge is respectively advanced to fix the PC strand to the fixed wedge block and the moving wedge block, and by operating the third hydraulic cylinder to move the moving wedge block toward the fixed wedge block A bulb is formed in the PC strand, and after the bulb formation is completed, the first and second hydraulic cylinders are operated to open the fixing wedge and the moving wedge from the fixed wedge block and the moving wedge block, respectively. A control unit for automatically controlling the above operations,

The fixed part wedge and the moving part wedge are each formed with a plurality of gear teeth on the surface in contact with the PC strand, the tapered shape is formed on the opposite side, the plurality of gear teeth the fixed part wedge and the moving part wedge Light bulb type cable forming apparatus, characterized in that formed in the inclined at a predetermined angle in the opposite direction to the direction to advance to the fixed wedge block and the moving wedge block, respectively, 70 to 90 per 8cm length.

In the bulb type cable forming device,

A plurality of bulb cable forming device units repeatedly arranged at predetermined intervals to form a plurality of bulbs in the PC strand; And

A control unit connected to each of the plurality of bulb cable forming units and automatically controlling the operation of the bulb cable forming units simultaneously or sequentially to form the plurality of bulbs in the PC strand by an automated process;

Each bulb cable forming device unit,

It comprises a third hydraulic cylinder for hydraulically advancing and retracting the moving wedge block,

The fixed part wedge and the moving part wedge are each formed with a plurality of gear teeth on the surface in contact with the PC strand, the tapered shape is formed on the opposite side, the plurality of gear teeth the fixed part wedge and the moving part wedge Each of the fixed wedge block and the moving wedge block is formed to be inclined at a predetermined angle in the direction opposite to the forward direction is formed 70 to 90 per 8cm length,

The one control unit operates the first and second hydraulic cylinders to the respective bulb cable forming device parts, and opens the fixed part wedges and the moving part wedges in the fixed wedge block and the moving wedge block, respectively. When the PC twisted line is mounted between each of the fixing part wedge and the moving wedge, the fixing wedge and the moving wedge are respectively advanced to fix the PC wring wire to the fixed wedge block and the moving wedge block, and the third hydraulic cylinder To move the moving wedge block toward the fixed wedge block to form a bulb in the PC strand, and after the bulb formation is completed, operate the first and second hydraulic cylinders to fix the fixed wedge block and the moving wedge block. Automatically control the above operations simultaneously or sequentially so that the fixed part wedge and the moving part wedge open in reverse Compact cable forming device, characterized in that the.

The method according to claim 1 or 2,

A plurality of wedge detection sensors for detecting forward and backward motions of the fixed part wedge and the moving part wedge and transmitting a signal detected by the controller;

And a moving wedge block detection sensor for detecting a forward and backward movement of the moving wedge block and transmitting a signal detected by the control unit.

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