KR102380674B1 - Cable puller and method of laying cable using the same - Google Patents

Abstract

The present invention relates to a power cable puller. The cable puller according to an embodiment of the present invention is detachably fixed to an upper end of one side of a cable tray. The cable puller includes: a motor including a drive shaft; a first roller having a first rotation shaft drive-coupled to the drive shaft and movable in a horizontal direction perpendicular to an extending direction of the upper end of the one side surface to which a cable plug of the cable tray is fixed, and a first friction ball fixed to the first rotational shaft and rotating together with the first rotational shaft; and a second roller spaced apart from the first rotation shaft, and having a displacement-fixed second rotation shaft and a second friction ball fixed to the second rotation shaft and rotating together with the second rotation shaft, wherein the second roller is disposed inside the cable tray, and a maximum separation position of the first roller is arranged between the second roller and the one side surface of the cable tray or outside the cable tray. Accordingly, cable damage caused by the tray bar during cable laying is prevented.

Description

Cable puller and cable laying method using the same {Cable puller and method of laying cable using the same}

The present invention relates to electrical wiring equipment, and more particularly, to a cable puller and a cable laying method using the same.

In a technical field that requires installation and demolition of cables, such as construction, ships, and civil engineering, cables may be difficult to install because they have low flexibility and large volume. In order for the cable to be used stably for a long period of time after installation, it is preferable that the cable is not damaged or damaged during the installation operation. When a physical force such as high friction or tension is excessively applied to the cable during the installation operation, a problem in that the cable's sheath or interior may be damaged may occur.

1 is a view for explaining a cable laying method using a conventional cable puller.

Referring to FIG. 1 , in the cable tray 20, a tray bar 20a on one side, a tray bar 20b on the other side, and two tray bars 20a and 20b are spaced apart in a first direction (x-axis). A plurality of tray hangers 21 connecting the two tray bars 20a and 20b to extend in parallel may be included. The plurality of tray hangers 21 may be disposed to be spaced apart from each other in the first direction (x-axis). For cable laying, the cable puller 10 may be fixedly mounted with the upper end of one side of the cable tray 20 . Specifically, at least one cable puller 10 may be fixedly mounted on the tray bar 20a on one side of the cable tray 20 by a separate coupling member (not shown). Thereafter, the cable C to be installed may be disposed on the cable puller 10 and transported in the direction of the arrow D1 or D2 along the x-axis by the mechanical power of the cable puller 10 .

The cable (C) to be laid conventionally is disposed between the two friction balls (10a, 10b) of the cable puller (10), and then the distance between the two friction balls (10a, 10b) is close to the cable diameter, with an arrow k As shown, the cable C can be fixed between the two friction balls 10a and 10b by moving the first friction ball 10a and the second friction ball 10b together to bring them closer together. While the cable (C) is transferred in the installation direction (D1 or D2) in a fixed state by the friction balls (10a, 10b), the installation process proceeds. If necessary, using the cable tray 200, the recovery process of the cable (C) by the above-described method may be performed.

However, conventionally, the cable (C) to be installed by moving the two friction balls inward is fixedly arranged close to the tray bar (20a) on one side, thereby being transported close to the tray bar (20a) on the one side. A damaged area (H) may be formed by the coating of the cable (C) being stamped or rubbed by the tray bar (20a). If a defect occurs in the cable (C) due to the damage (H) in the covering of the cable (C), the life of the cable (C) deteriorates, and the process time is may be accompanied by an increase in costs associated with the increase in

In addition, the conventional cable puller 10 is bulky, so it is difficult to install cables, so it is necessary to develop a cable puller having a small volume in order to be easily installed and used in various working spaces.

The technical problem to be achieved by the present invention is to provide a cable puller having a small volume to prevent cable damage caused by a tray bar during installation work, and to enable installation work in various working spaces.

Another technical problem to be achieved by the present invention is to provide a cable laying method having the above-described advantages.

According to an embodiment of the present invention, the cable puller that is detachably fixed to the upper end of one side of the cable tray includes: a motor including a driving shaft; A first rotational shaft that is coupled to the drive shaft and movable in a horizontal direction perpendicular to the extending direction of the upper end of the one side of the cable tray to which the cable plug is fixed, and the first rotational shaft is fixed to the first rotational shaft and rotates together with the first rotational shaft a first roller having a first friction ball; and a second roller spaced apart from the first rotational shaft and having a displacement-fixed second rotational shaft and a second friction ball fixed to the second rotational shaft and rotating together with the second rotational shaft, the second roller comprising: A cable puller disposed on the inside of the cable tray, wherein the maximum separation position of the first roller is between the second roller and the one side of the cable tray or on the outside of the cable tray.

In one embodiment, the drive coupling between the drive shaft, the first rotary shaft, and the second rotary shaft may include: a first fixed gear coupled to the drive shaft and rotating in a first rotation direction according to the rotation of the drive shaft; a second fixed gear chain-coupled to the first fixed gear to rotate in the same direction as the first rotational direction of the first fixed gear; It is coupled to the first rotational shaft so as to be horizontally movable together with the first rotational shaft, and is chain-coupled with the second fixed gear to rotate in a second rotational direction opposite to the first rotational direction of the second fixed gear a first moving gear; a second moving gear chain-coupled with the first moving gear to rotate in the first rotational direction opposite to the second rotational direction of the first moving gear and horizontally movable together with the first moving gear; and a third fixed gear spaced apart from the second moving gear by a predetermined distance and chain-coupled to the second moving gear to rotate in the same direction as the first rotational direction of the second moving gear. The third fixed gear and the first fixed gear may be chain-coupled.

In one embodiment, the first moving gear, the second moving gear, and the third fixed gear may be arranged on a straight line. The chain may be commonly coupled between the first moving gear and the second moving gear. The second fixed gear and the second moving gear may be arranged such that a portion of the chain caught on the first moving gear may surround at least 1/4 of a circumference of the first moving gear.

In one embodiment, the part of the chain between the second moving gear MG2 and the third fixed gear FG3 and the part of the chain CH caught between the first moving gear MG1 and the second fixed gear FG2 is The first moving gear MG1 and the second fixed gear FG2 may be disposed parallel to each other.

In one embodiment, it may further include a gap adjusting member for adjusting the distance between the first roller and the second roller. A cable to be installed along one side of the motor and the first roller may move between the first friction ball and the second friction ball while passing through it. The motor and the first roller may be disposed along an extension direction of the one side of the cable tray, and the motor may be disposed between the second roller and the one side of the cable tray or outside the cable tray .

In an embodiment, an open area in which the cable puller and the cable tray do not overlap may be formed between the second roller and the other side of the cable tray. The first friction ball may rotate in a first rotational direction and the second friction ball may rotate in a second rotational direction opposite to the first rotational direction.

In another embodiment of the present invention, a motor including a drive shaft, a first rotary shaft driven and coupled to the drive shaft, and a first friction ball fixed to the first rotary shaft while surrounding the first rotary shaft to rotate together with the first rotary shaft A second roller having a first roller having a second rotation shaft spaced apart from the first rotation shaft and a second friction ball fixed to the second rotation shaft while surrounding the second rotation shaft and rotating together with the second rotation shaft A cable laying method using a cable puller comprising: fixing and coupling the cable puller to an upper end of one side of the cable tray so that the cable puller and the cable tray have an open area that does not overlap; disposing a cable to be laid on the cable puller; moving the first rotation shaft from a first direction to a second direction so that the cable is in close contact with the first friction ball and the second friction ball; supplying an applied power to the cable puller so that the cable is transported along an extension direction of one side of the cable tray while passing the cable between the first friction ball and the second friction ball; and a cable rearrangement step of sequentially disposing the cables inside the cable tray from the other side of the cable tray to the one side through the open area when the cable is transported a predetermined distance.

In one embodiment, by repeatedly performing the cable rearrangement step, the step of stacking the transferred cables in the height direction of the cable tray may further include. The first friction ball may rotate in a first rotational direction and the second friction ball may rotate in a second rotational direction opposite to the first rotational direction.

According to an embodiment of the present invention, a second roller including a fixed second rotating shaft is disposed on the inside of the cable tray, and the motor and the movable first roller are disposed between one side of the cable tray or on the outside of the cable tray. By arranging in a straight line, it is possible to prevent cable damage caused by the tray bar during cable laying work, reduce the volume of the cable puller compared to the prior art, and move the cable stably at a low height during cable laying.

In addition, according to another embodiment of the present invention, a cable laying method having the above-described advantages can be provided.

1 is a view for explaining a cable laying method using a conventional cable puller.
2 is a perspective view of a cable puller according to an embodiment of the present invention.
3A and 3B are rear views illustrating a chain coupling inside a cable puller according to an embodiment of the present invention.
4A and 4B are diagrams illustrating a driving coupling between a driving shaft of a motor and a first fixed gear according to an embodiment of the present invention.
5A and 5C are diagrams for explaining a cable laying method using the cable puller of the present invention.
6 is a view for explaining a cable laying method using a plurality of cable pullers of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Examples of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is as follows It is not limited to an Example. Rather, these examples are provided so that this disclosure will be more thorough and complete, and will fully convey the spirit of the invention to those skilled in the art.

In the drawings, like reference numerals refer to like elements. Also, as used herein, the term “and/or” includes any one and any combination of one or more of those listed items.

The terminology used herein is used to describe specific embodiments, not to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly dictates otherwise. Also, as used herein, “comprise” and/or “comprising” refers to specifying the presence of the recited shapes, numbers, steps, actions, members, elements, and/or groups thereof. and does not exclude the presence or addition of one or more other shapes, numbers, movements, members, elements and/or groups.

As used herein, “below”, “above”, “upper”, “lower”, “horizontal” or “vertical” Relative terms such as , as shown in the drawings, may be used to describe the relationship that one constituent member, layer or region has with another constituent member, layer or region. It should be understood that these terms encompass not only the directions indicated in the drawings, but also other directions of components.

In this specification, terms such as 'first' and 'second' may be used interchangeably. For example, the disclosure of the first axis of rotation RS1 , the first friction ball FR1 and the first roller R1 is the second axis of rotation RS2 , the second friction ball FR2 and the second roller R2 ) can be applied in the same way. Descriptions of other components may also be mutually referenced.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically illustrating ideal embodiments of the present invention. In the drawings, for example, the size and shape of the members may be exaggerated for convenience and clarity of description, and in actual implementation, variations of the illustrated shape may be expected. Accordingly, embodiments of the present invention should not be construed as limited to the specific shapes of the regions shown herein.

2 is a perspective view of a cable puller 100 according to an embodiment of the present invention, FIGS. 3A and 3B are rear views showing a chain coupling inside a cable puller according to an embodiment of the present invention, FIGS. 4A and 4A 4b is a view showing the driving coupling between the driving shaft of the motor and the first fixed gear according to an embodiment of the present invention. The cable puller 10 may be used to install a power cable or a communication cable. However, the above-described examples are not limited to the present invention, and may be applied to the installation of various cables having a predetermined thickness and weight. For example, it can be used for the laying of a rope made of twisted yarn, steel, fiber, etc.

2, the cable puller 100 includes a motor (M) including a drive shaft (not shown); A first friction ball that is coupled to the drive shaft of the motor M and fixed to the first rotation shaft RA1 while surrounding the first rotation shaft RA and the first rotation shaft RA to rotate together with the first rotation shaft RA1 ( The first roller R1 having FR1 and the first rotation shaft RA1 are spaced apart from each other, and the second rotation shaft RA2 and the second rotation shaft RA2 are wrapped around the second rotation shaft RA2 and fixed to the second rotation shaft and a second roller R2 having a second friction ball FR2 that rotates together with RA2. The cable puller 100 may be fixedly mounted to the upper end of one side of the cable tray through a separate clamp or a fixing member (not shown) such as a bolt/nut. Specifically, as described with reference to FIG. 1 , one side of the cable tray 20 is one tray bar 20a, and the cable puller 200 may be fixedly mounted to the upper end of the tray bar 20a. In addition, after the cable laying operation is completed, the cable puller 100 is left fixed to the cable tray 20 , or can be detached or disassembled from the cable tray 20 .

In one embodiment, the first rotation shaft RA1 of the first roller R1 extends one side 20a of the cable tray 20 to which the cable puller 100 is fixed through a gap adjusting member RR, which will be described later. It can move in a horizontal direction (y-axis direction) perpendicular to a direction (x-axis direction). The second roller R2 is disposed inside the cable tray 200 , that is, from one side 20a to the other side 20b of the cable tray 20 to which the cable puller 100 is fixed. Unlike the first roller R1 , the second roller R2 does not move in the x-axis direction and is fixed. The second roller R2 is fixed to the housing of the cable puller 100 so as not to be movable, and rotates.

The maximum separation position of the movable first roller R1 may be between the second roller R2 and one side of the cable tray 200 or outside the cable tray 200 . The maximum separation position of the first roller R1 refers to the position of the first roller R1 at this time when the fixed second roller R2 and the first roller R1 have the maximum separation distance. On the other hand, the minimum spacing position of the first roller (R1) approaches the second roller (R2) to which the first roller (R1) is fixed, so that the minimum spacing between the first roller (R1) and the second roller (R2) is When having a distance, it refers to the position of the first roller R1 at this time.

In one embodiment, the motor M may be connected to the first roller R1 in the extension direction (x-axis) of one side of the cable tray 200 , and the second roller R2 and the cable tray 200 . It may be disposed between the one side or outside of the cable tray 200 . However, the present invention is not limited to the position of the motor (M). Specifically, the motor M may be connected to the second roller R2 in the extension direction (x-axis) of one side of the cable tray 200 , and at this time, the second roller R2 and the cable tray 200 are inside the can be placed.

In addition, by fixing the cable puller 100 to the cable tray 20 at the upper end of one side of the cable tray 200, an open area between the other side 20b of the cable tray 20 and the second roller R2 can be formed. The open area is an area in which the cable puller 100 and the cable tray 20 do not overlap based on a plan view. It can be used as a space for placement.

As described above, by positioning the first roller R1 movable in the horizontal direction (y-axis) between the second roller R2 and one side of the cable tray 200 or outside the tray 200 , the first When the cable to be installed is actually fixed by moving the roller (R1) toward the fixed second roller (R2), the first roller (R1) moves toward the second roller (R2), As far as possible from one side 20a of the cable tray to which 100) is fixed, by pushing it into the inner side of the cable tray 20 and pressing it on the second roller R2, the cable to be installed can be installed on the cable tray as compared to the prior art. The bar 20a and even the cable tray bar 20b on the other side of the cable tray 20 are sufficiently spaced apart to maintain a predetermined distance. Therefore, even when the cable to be installed is transported along the tray bar 20a when the cable puller 100 is driven, it is spaced apart from the tray bar 20a as much as possible to prevent damage to the cable from contact or friction with the tray bar 20a. there is.

In addition, when the cable puller 10 is fixedly mounted to the cable tray 200 using two conventional motors, the motor and the roller are located inside the cable tray 200 so that the cable is transported inside the cable tray 200 after the cable is transported. There are difficulties in organizing the cables. However, in the present invention, by designing one motor to be located outside the cable tray 200 while using one motor, the component parts located inside the cable tray 200 can be minimized, so that the cable is transported after the cable is transported to the cable tray. (200) It is possible to easily proceed with the cable arrangement inside.

In one embodiment, the motor M may include a drive shaft that rotates at a predetermined rotation speed. The drive shaft may transmit the rotational force of the motor to the outside. The rotation speed may mean an angular speed or an angular speed of the motor. For example, the rotation speed may be a speed at which an angle is rotated with respect to a specific axis.

In one embodiment, the motor M is a direct current (DC) motor such as a step motor, a servo motor including a feedback circuit, a reluctance motor, a hysteresis motor, and a non-exciter such as a permanent magnet motor. AC (non-excited) motors, such as synchronous motors such as DC-excited motors, asynchronous/induction motors, single-phase synchronous motors, and three-phase motors AC) motors.

The AC motor may be, as a non-limiting example, an induction motor, a reversible motor, or a speed control motor. Preferably, an induction motor can be used. The power of the induction motor may be 50 W to 500 W, or 100 W to 200 W, for example, 150 W. The induction motor has a simple structure and high reliability. The above-described first motor M1 and second motor M2 may be of the same type and may have the same output power or may be different types and may have different output powers.

In one embodiment, the guide roller parts (GR1, GR2) are installed to be spaced apart from each other by a predetermined distance in the x-axis direction, so that the cable (C) that is transported through between the first roller (R1) and the second roller (R2) is the main body It is in contact with the plate MP to reduce damage and reduce frictional resistance so that the cable C can be easily transported. Each of the guide roller parts GR1 and GR2 is only different in that it is installed on the front side and the rear side of the front side of the body plate MP, and the configuration is the same. The guide roller parts GR1 and GR2 may include a pair of rotation support members CS and rotation rollers CR.

In one embodiment, the body plate MP may be made of a metal material or a synthetic resin material and may be configured in the form of a square casing, that is, a housing. However, the body plate MP of the present invention is not limited to a rectangular shape and may have various shapes. In addition, the motor M, the first roller R1, and the second roller R2 may be supported on the upper surface of the body plate MP. The body plate MP includes an internal space S, and the internal space S has a drive coupling between a driving shaft (not shown) of the motor M, a first rotation shaft RA1 and a second rotation shaft RA2. A chain and gears for and a spacing adjusting member RR for moving the first rotational shaft RA1 may be disposed. Reference is made to a rear view showing the inside of the body plate MP viewed from the downward direction of the body plate MP of FIGS. 3A and 3B , which will be described later.

3A is a case in which the maximum separation distance is between the first roller R1 and the second roller R2, and FIG. 3B is a case in which the minimum separation distance is between the first roller R1 and the second roller R2. am.

Referring to FIGS. 3A and 3B , the rotational force of the motor M is applied to the first rotational shaft RA1 and the 2 may be transmitted to the rotation shaft RA2. The chain gear is connected to the first fixed gear FG1, the second fixed gear FG2, the first moving gear MG1, the second moving gear MG2, the third fixed gear FG3 and the chain CH is composed At least one of the first fixed gear FG1, the second fixed gear FG2, the first moving gear MG1, the second moving gear MG2, and the third fixed gear FG3 may include a sprocket gear. . The chain CH may be a metal chain or a rubber belt, but is preferably a metal chain, and the present invention is not limited thereto.

Specifically, as shown in FIGS. 4A and 4B to be described later, the first fixed gear FG1 is vertically coupled to the drive shaft of the motor M and may rotate in the first rotation direction (a) according to the rotation of the drive shaft. 3B illustrates that the first rotation direction is a clockwise direction. The second fixed gear FG2 is chain-coupled to the first fixed gear FG1. In this case, the first rotation direction a of the first fixed gear FG1 and the second fixed gear FG2 may rotate in the same direction.

The first moving gear MG1 is coupled to the first rotating shaft RA1 , and the rotational force of the first moving gear MG1 is transmitted to the first rotating shaft RA1 as it is, and the first moving gear MG1 is the first rotating shaft Horizontal movement is possible with (RA1). The first moving gear MG1 may be chain-coupled with the second fixed gear FG2 to rotate in a second rotational direction b opposite to the first rotational direction a of the second fixed gear FG2. . The second moving gear MG2 is chain-coupled with the first moving gear MG1 to rotate in a first rotational direction a, which is opposite to the second rotational direction b of the first moving gear MG1 , and is first Horizontal movement is possible together with the movement gear MG1. The second rotation direction b may be counterclockwise.

The third fixed gear FG3 is spaced apart from the second moving gear MG2 by a variable distance, and the second moving gear MG2 rotates in the same direction as the first rotational direction a of the second moving gear MG2. can be chain-coupled with In addition, the third fixed gear FG3 may be chain-coupled to the first fixed gear FG1 to rotate in the same direction as the first rotation direction a of the first fixed gear FG1 . Preferably, the first moving gear MG1, the second moving gear MG2, and the third fixed gear FG3 are arranged in a straight line, and the displacement of the first moving gear MG1 and the second moving gear MG2 is controlled. Through this, the distance between the first roller R1 and the second roller R2 is adjusted.

As described above, the first fixed gear FG1, the second fixed gear FG2, the first moving gear MG1, the second moving gear MG2, and the third fixed gear FG3 are combined into one chain. Thus, the first fixed gear (FG1) coupled to the drive shaft of the motor (M) receives the rotational force of the motor (M) and transmits the rotational force to the chain-coupled second fixed gear (FG2), the second fixed gear FG2 may transmit the rotational force received from the first fixed gear FG1 to the first moving gear MG1 and the second moving gear MG2 . Specifically, the first moving gear MG1 rotates in the second rotating direction b and the second moving gear MG2 rotates in the first rotating direction a through the rotational force of the second fixed gear FG2. do. Thereafter, the rotational force by the first moving gear MG1 and the second moving gear MG2 may be transmitted to the third fixed gear FG3 .

In one embodiment, the first rotational shaft RA1 of the first moving gear MG1 and the auxiliary rotational axis AA of the second moving gear MG2 are coupled to the support SU and y by the movement of the support SU. It can move along the axis, and as a result, the first roller R1 fixed to the first rotation shaft RA1 approaches or moves away from the second roller R2 . The movement of the support SU may be adjusted by the spacing adjusting member RR. The spacing adjusting member RR is screwed through the support SU, so that by rotating the spacing adjusting member RR in the first direction d or in the opposite direction, the support SU is first formed along the y-axis. 3 Can move closer to or farther from the fixed gear (FG3). At this time, according to the movement of the support SU, the first moving gear MG1 and the second moving gear MG2 coupled to the support SU may move side by side along the y-axis.

In one embodiment, the sizes of the first moving gear MG1 , the second moving gear MG2 , and the third fixed gear MG3 are the same, and their central axes may all be arranged on a straight line. In an embodiment of the present invention, one surrounding the first fixed gear FG1, the second fixed gear FG2, the first moving gear MG1, the second moving gear MG2, and the third fixed gear FG3 of the chain, even if there is movement of the support SU to adjust the distance between the first roller R1 and the second roller R2, there is no loosening or tightening of the chain CH, so the tension can be maintained. Thus, there is no change in the length of the trajectory that the chain surrounds these gears. To this end, as shown in FIGS. 3A and 3B, a part of the chain between the second moving gear MG2 and the third fixed gear FG3 is parallel to the y-axis, which is the second moving gear MG2 and the second moving gear MG2. When the size of the 3 fixed gears FG3 are the same, it is achieved that the central axis of each gear is placed on the y-axis. Further, the first moving gear MG1 and the second fixed gear FG2 are arranged such that a part of the chain CH caught between the first moving gear MG1 and the second fixed gear FG2 is parallel to the y-axis. . As a result, the part of the chain between the second moving gear MG2 and the third fixed gear FG3 and the part of the chain CH caught between the first moving gear MG1 and the second fixed gear FG2 are parallel to each other. is laid out

In one embodiment, the first moving gear MG1 , the second moving gear MG2 , and the second fixed gear FG2 compared to the third fixed gear FG3 are spaced apart from each other by a predetermined distance in the x-axis direction, and the first Compared to the moving gear MG1, it is disposed in the outward direction of the cable puller 100 in the y-axis direction to provide sufficient tension to the chain CH to spread the chain CH.

In addition, since the chain CH is commonly coupled between the first shifting gear MG1 and the second shifting gear MG2 , the chain CH can be faithfully coupled to the gear teeth of the first shifting gear MG1 . In the second fixed gear FG2 and the second moving gear MG2, a part of the chain CH caught on the first moving gear MG1 may surround at least 1/4 of the circumference of the first moving gear MG1. placed so that To this end, in the second moving gear MG2, the distance between the end circle of the gear teeth of the first moving gear MG1 and the end circle of the gear teeth of the second moving gear MG2 is at least 1 to 3 times the thickness of the chain CH. It may be disposed to be spaced apart from the first moving gear MG1 to have an interval of . In addition, while the second fixed gear FG2 is disposed toward the end circle of the gear teeth of the first moving gear MG1 rather than the central axis of the first moving gear MG1, the first moving gear MG1 and the second fixed gear FG2 A part of the chain CH interposed therebetween is arranged so as to be parallel to the y-axis, so that the chain CH is sufficiently caught on the gear teeth of at least 1/4 of the first moving gear MG1, and the cable puller 100 In spite of the rattling of the chain (CH) due to vibration or impact caused by a non-uniform load during operation, slip of the chain (CH) does not occur, and the rotational force of the motor by the chain (CH) can be transmitted faithfully.

In addition, through the chain coupling between the first moving gear MG1 and the second moving gear MG2, the direction of rotation of the first roller R1 and the direction of rotation of the second roller R2 may be set differently from each other. The cable moving between the first roller (R1) and the second roller (R2) can be laid without twisting with low power.

In one embodiment, the drive shaft of the motor M includes at least one coupling member of a clamping hub having a motor gear, a spiral pattern, a keyway groove, or a coupling pattern formed at at least one end. can This is a non-limiting example, and various known technologies related to the motor may be referenced for the coupling member.

4A and 4B are diagrams illustrating a driving coupling between a driving shaft DRS of a motor and a first fixed gear FG1 according to an embodiment of the present invention.

Referring to Figure 4a, the drive coupling between the motor (M) and the first fixed gear (FG1) is a pinion gear (PG) and pinion gear (PG) rotated according to the rotation of the drive shaft (DRS) of the motor (M) and It may include a bevel gear consisting of a meshing ring gear (RG). The bevel gear may be any one of a straight bevel gear, a spiral bevel gear, a gerol bevel gear, a helical bevel gear, and an angular bevel gear. However, the present invention is not limited to bevel gears, and any gear that vertically couples two shafts may be applied. The pinion gear PG is connected to the upper end of the auxiliary shaft AX perpendicular to the driving shaft DRS of the motor M, and the first fixed gear FG1 is connected to the lower end of the auxiliary shaft AX.

Referring to FIG. 4B , the drive coupling between the motor M and the first fixed gear FG1 is a vertical gear VG and a vertical gear VG that are vertically rotated according to the rotation of the drive shaft DRS of the motor M and a horizontal gear HG that meshes with the . The horizontal gear HG may rotate horizontally by the vertical rotation of the vertical gear VG. The horizontal gear HG is connected to the upper end of the auxiliary shaft AX perpendicular to the driving shaft DRS of the motor M, and the first fixed gear FG1 is connected to the lower end of the auxiliary shaft AX.

The above-described drive coupling between the drive shaft DRS and the first fixed gear FG1 is exemplary and the present invention is not limited thereto. In addition, a reduction gear may be disposed between the drive shaft DRS and the first fixed gear FG1 , or the drive shaft DRS itself may be an output end side of the reduction gear. The speed reducer may refer to a technique in the art, but the present invention is not limited thereto.

5A to 5C are views for explaining a cable laying method using a cable puller of the present invention, and FIG. 6 is a view for explaining a cable laying method using a plurality of cable pullers of the present invention.

Referring to FIG. 5A , first, the cable puller 100 may be fixedly mounted to the upper end of one side of the cable tray 200 . Specifically, in order to reduce cable damage during transport by maintaining a predetermined distance from the cable bar 220 where the cable to be installed is possible, the cable puller 100 is installed at the upper end of the cable bar 220 using a separate fixing member such as a clamp. The fixed second roller R2 of the cable puller 100 is disposed on the inside of the cable tray 200, and the cable puller 100 is horizontally moved (y-axis direction) with the second roller R2. The first roller R2, which is displaceable to adjust the spacing, is disposed between the second roller R2 and one side of the cable tray or on the outside of the cable tray 200 . In addition, as shown in FIG. 6 , the plurality of cable pullers 10 may be fixedly mounted on one side of the cable tray 200 at a predetermined distance. Then, the cable (C) to be laid is placed on the at least one cable puller (10). Specifically, position the cable C so that the cable C passes between the first roller R1 and the second roller R2 of the cable puller 10 on the body plate MP of the cable puller 10 .

Referring to FIG. 5B, by rotating the gap adjusting member (see RR in FIG. 3A) and moving the movable first roller R1 to the fixed second roller R2, the first roller R1 and the second roller It is possible to support the cable (C) to be laid between (R2). When the cable (C) is supported between the first roller (R1) and the second roller (R2), the cable (C) is moved little by little in the x-axis direction while preventing the cable (C) from being separated from the cable puller (100). can be transported

Referring to FIG. 6 , the cable C along the extension direction of one side of the cable tray 200, that is, the x-axis direction, while passing the next cable C between the first roller R1 and the second roller R2. ) may be supplied with power to the cable pullers (100a, 100b)) to be transported. As shown in Figure 6, a series of a plurality of cable pullers (100a, 100b) are arranged in the cable tray 200 for the installation or recovery of the cable (C), the first cable puller (100a) to the second cable puller ( 100b), ie in the direction D, or from the second cable puller 100b to the first cable puller 100a, ie in the direction D2. In the case of the installation work, when the cable (C) is delivered by a desired amount onto the tray 200 by a plurality of cable pullers (100a, 100b), it is necessary to organize the cable (C) inside the cable tray 200 .

5c, the distance between the first roller (R1) and the second roller (R2) of the cable puller 100 is widened, and the cable that was supported between the first roller (R1) and the second roller (R2) ( C) is released, and the cable (C) is separated from the cable puller 100 to separate the open space (OS) between the cable puller 100 and the cable tray 200, that is, the cable puller 100 and the cable tray 200. ) through the non-overlapping open space between the other sides of the cable (C) detached from the cable puller 100 is rearranged into the cable tray 200. Arrow PA shows that the transferred cable C is separated from the cable puller 100 and moved into the cable tray 200 . Preferably, the cables (C) are arranged sequentially on the bottom of the cable tray 200, next to the cables (C') before the installation is completed.

The cable arrangement step of FIG. 5c is repeatedly performed, and the cables C are sequentially arranged inside the cable tray 200 , that is, on the floor. Optionally, the cables (C) may be stacked in the height direction of the cable tray (200).

It is common in the art to which the present invention pertains that the present invention described above is not limited to the above-described embodiments and the accompanying drawings, and that various substitutions, modifications and changes are possible within the scope without departing from the technical spirit of the present invention. It will be clear to those who have knowledge.

M: first motor, R1: first roller
R2: 2nd roller RA1: 1st axis
RA1: second axis of rotation FR1: first friction ball
FR2: second friction ball GR1, GR2: guide roller
RR: Spacing member SU: Support
FG1, FG2, FG3: Fixed gear MG1, MG2: Moving gear
CA: Chain C: Cable

Claims (15)

A cable puller that is detachably fixed to the upper part of one side of the cable tray,
a motor including a drive shaft;
A first rotational shaft that is coupled to the drive shaft and movable in a horizontal direction perpendicular to the extending direction of the upper end of the one side of the cable tray to which the cable plug is fixed, and the first rotational shaft is fixed to the first rotational shaft and rotates together with the first rotational shaft a first roller having a first friction ball; and
a second roller disposed spaced apart from the first rotational shaft and having a displacement-fixed second rotational shaft and a second friction ball fixed to the second rotational shaft and rotating together with the second rotational shaft,
The second roller is disposed inside the cable tray,
The maximum separation position of the first roller is disposed between the second roller and the one side of the cable tray or on the outside of the cable tray,
When the cable to be installed is brought into close contact between the first roller and the second roller by moving the first roller toward the second roller, the cable puller having a maximum separation distance between the one side of the cable tray and the cable to be installed . The method of claim 1,
The drive coupling between the drive shaft, the first rotary shaft and the second rotary shaft is,
a first fixed gear coupled to the driving shaft and rotating in a first rotational direction according to the rotation of the driving shaft;
a second fixed gear chain-coupled to the first fixed gear to rotate in the same direction as the first rotational direction of the first fixed gear;
It is coupled to the first rotational shaft so as to be horizontally movable together with the first rotational shaft, and is chain-coupled with the second fixed gear to rotate in a second rotational direction opposite to the first rotational direction of the second fixed gear a first moving gear;
a second moving gear that is chain-coupled to the first moving gear to rotate in the first rotational direction opposite to the second rotational direction of the first moving gear and horizontally movable together with the first moving gear; and
and a third fixed gear spaced apart from the second moving gear by a predetermined distance and chain-coupled to the second moving gear to rotate in the same direction as the first rotational direction of the second moving gear. 3. The method of claim 2,
The third fixed gear and the first fixed gear are chain-coupled to the cable puller. 3. The method of claim 2,
The first moving gear, the second moving gear and the third fixed gear are disposed in a straight line. 3. The method of claim 2,
A cable puller to which the chain is commonly coupled between the first moving gear and the second moving gear. 3. The method of claim 2,
The second fixed gear and the second moving gear are arranged such that a portion of the chain caught on the first moving gear can surround at least 1/4 of a circumference of the first moving gear. The method of claim 1,
A part of the chain between the second moving gear MG2 and the third fixed gear FG3 and the part of the chain CH caught between the first moving gear MG1 and the second fixed gear FG2 are parallel to each other in the first A cable puller in which the moving gear MG1 and the second fixed gear FG2 are disposed. The method of claim 1,
The cable puller further comprising a gap adjusting member for adjusting a distance between the first roller and the second roller. The method of claim 1,
A cable puller that moves between the first friction ball and the second friction ball while passing a cable to be installed along one side of the motor and the first roller. The method of claim 1,
The motor and the first roller are disposed along an extension direction of the one side of the cable tray,
The motor is a cable puller disposed between the second roller and the one side of the cable tray or outside the cable tray. The method of claim 1,
A cable puller having an open area in which the cable puller and the cable tray do not overlap between the other side of the cable tray and the second roller. The method of claim 1,
The first friction ball rotates in a first rotational direction and
The second friction ball rotates in a second rotational direction opposite to the first rotational direction. A first roller having a motor including a driving shaft, a first rotating shaft driven and coupled to the driving shaft, and a first friction ball fixed to the first rotating shaft while surrounding the first rotating shaft and rotating together with the first rotating shaft; Cable laying using a cable puller comprising a second rotating shaft spaced apart from the first rotating shaft and a second roller having a second friction ball fixed to the second rotating shaft while surrounding the second rotating shaft and rotating together with the second rotating shaft as a method,
fixing the cable puller to an upper end of one side of the cable tray so that the cable puller and the cable tray have an open area where they do not overlap;
disposing a cable to be laid on the cable puller;
moving the first rotation shaft from the first direction to the second direction so that the cable is in close contact with the first friction ball and the second friction ball so that the one side of the cable tray and the cable have a maximum separation distance;
supplying an applied power to the cable puller so that the cable is transferred along an extension direction of one side of the cable tray while passing the cable between the first friction ball and the second friction ball; and
and a cable relocation step of sequentially disposing the cables inside the cable tray from the other side of the cable tray to the one side through the open area when the cable is transported a predetermined distance. 14. The method of claim 13,
By repeating the cable relocation step, the cable laying method further comprising the step of stacking the transferred cables in the height direction of the cable tray. 14. The method of claim 13,
The first friction ball rotates in a first rotational direction and
The second friction ball is a cable laying method for rotating in a second rotational direction opposite to the first rotational direction.

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